Explosion-protection structure for fencing explosion-hazardous premises of production facilities
FIELD: safeguards; explosion-protection devices.
SUBSTANCE: invention relates to explosion-protection devices used in explosive objects. Technical result is achieved by the fact that in explosion-protection structure for fencing explosion-hazardous premises of production facilities, containing reinforced concrete panels of size 6000×1800 mm with perimeter strap for transportation, panel is made in the form of depressions in the building wall and is formed by the planes of a regular quadrilateral truncated pyramid with a circular base, inscribed in its faces in the form of a hole with diameter Dy, there is a body base, made in the form of a plate with a central hole of diameter Dy, equal to the diameter of the hole in the building fence, which is covered by a lined cargo gate movably connected to the base by means of at least three flexible connections, for example in the form of chains, one end of which is hingedly connected to the cylindrical part of the body, and the other one is hingedly connected to the cargo gate, the cylindrical body part is connected to the middle conical and upper cylindrical parts, and in the cylindrical body part, adjoining the conical part, there is a circular diaphragm with a central hole and with at least three holes located in its peripheral part, and between the circular diaphragm and the lined cargo gate there is a bushing made of a rapidly disintegrating material, for example glass, of the "triplex" type, whose strength is calculated for a certain overpressure in the explosion-protection structure, and there is rod coaxial to the bushing, made of a rapidly disintegrating material, axisymmetric to a hole of diameter Dy and fixed to the base of the body on the lined cargo gate, right part of the rod is axisymmetrically located in the central hole of the circular diaphragm.
EFFECT: technical result is increased reliability and efficiency of safe operation of explosion-hazardous premises of production facilities.
1 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: explosion proof device with bursting disc comprises valve body, gate and bursting element. Lined cargo gate is connected by movable coupling to the valve body and covers opening in a body of the protected facility. In the upper cylindrical part of the valve body there is a unit fixing the bursting disc.
EFFECT: safe fuelling due to usage of explosion proof elements.
2 cl, 4 dwg
SUBSTANCE: invention relates to the field of safe operation of hazardous articles which are surrounded by a hostile environment, in particular to safety sealing devices, namely to devices with a destructible element providing automatic actuation and opening sealed air channels under certain external influencing factors. The protective device comprises a movable element, retained by a stopper, linearly movable by the force influence of a preliminarily compressed spring. Mechanical properties of the stopper are changed under the influence of environmental factors. The movable element is made in the form of a spring-loaded plug 1 and is located inside the housing of the object 6. The stopper is made in the form of a latch 4 of a low-melting material applied to the coils of a compressed telescoping spring 3 prior to mounting it into the housing. The plug 1 is provided with sealing elements 2 and is made with the axial height smaller than the height of the spring 3 in a free state.
EFFECT: simplification of the design of the protective device, minimising the size of the protective device, reduction of the number of elements, increasing the reliability of the device actuation.
3 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: explosion-proof device with a bursting disk includes a valve body, a gate, and a bursting element. A unit for the bursting disk fastening is installed in the upper cylindrical part of the valve body. The bursting disk is clamped between rings. The rings are connected to each other by two diametrically opposite plates and screws. One of the holes for the screws in the plate is of an oblong shape. In the lower cylindrical part of the valve body there arranged is a lined load gate covering a hole made in the body of the protected object. The said gate is connected in a movable manner to the valve body by means of at least three flexible links. The flexible links are made as elastic belts, one end of the belts is hinged to the valve body, and the other one is hinged to the load gate. Elastic belts are layered and have the alternation of elastic and damping layers. A vibration damping paste, for example of the VD-17 type, is used as the damping layers, and an elastomer is used as the elastic layers.
EFFECT: improving the efficiency and reliability of protection of process equipment against explosions in case of emergencies by increasing quick action and reliability of bursting elements actuation.
FIELD: machine building.
SUBSTANCE: group of inventions relating valves manufacturing and intended for use as the rupture disc in safety devices to protect HP systems. The rupture disc for the distributor with gas insulation contains thin domed plate that contains first flange part and first domed part at centre of the first flanged part, and rupture guiding plate containing the second flanged part overlaid on the first flanged part, and second domed part with number of slits created such that to determine the rupture shape such, that part of the first domed part will rupture as per specified shape when the internal pressure increases. The slits have arc-like shape. One single clit is connected with the another single slit adjacent to it by means of the rupture link. End sections of the clits at both edges of the multiple clits are provided with rupture limiting holes to create the articulated part of the second domed part. The design option of the rupture disc and distributor with gas insulation containing the rupture disc is available.
EFFECT: invention improves reliability and accuracy of activation of the rupture disc.
15 cl, 20 dwg
FIELD: machine building.
SUBSTANCE: blast valve with a system of damping of the load gate comprises a valve body, heat-insulating and rupture elements, a lined load gate. A dynamic connection of the lined load gate with the valve body base is made in the form of three rods installed vertically in the peripheral part of the lined load gate. The rods are connected with the lower part in the valve body basis. The upper part thereof is provided with a damping device. Every one of three damping devices is attached to a horizontal jumper rigidly connected with the rod and implemented in the form of a round disk. A base of the damping device is attached to this disk by means of screws. The device is made of a rigid shock-absorbing material of "Agat" type. The base is connected with a bushing made of elastomer and features a central hole, through which the rod passes. The bushing features, at least, three holes coaxial with the rod accommodating resilient elements, e.g. cylindrical screw springs. The upper end face of these springs is connected by means of fasteners to the damping device base, while a lower end face is in a free state and protrudes beyond a lower bushing plane by a distance determined by the force developed by the shock explosion wave.
EFFECT: increasing efficiency of the process equipment protection against explosions by increasing the shock-absorption of the lined load gate.
FIELD: machine building.
SUBSTANCE: device for emergency shutdown of a pipeline comprises a casing 1, a valve 2, a valve seat 3 and a valve return mechanism. The casing is equipped by a supply pipe branch 4 and a discharging pipe branch 5 for the connection to supplying and discharging sections of the pipeline. The valve seat 3 is installed across the casing flow passage and the valve is coupled to the valve return mechanism by a stem 6. The valve is mounted on the side of the supplying pipe branch 4 and is fixed on the stem 6. The stem is installed in the casing guides in a movable way. The return mechanism includes a seal 7, an adjustable support 8, a safety device 9 and a supporting cup 10. The seal is fixed in the casing. The adjustable support is movably installed in the supporting cup 9 on the safety device 10 from hard soluble material. The safety device is set on the bottom of the supporting cup where holes for spilled liquid are provided. The supporting cup is set on the floor of the room being monitored. The casing 1 is made as a cylinder closed by covers 11, 12 with sealing rings 13 which are tightened by studs 14 and nuts 15.
EFFECT: higher reliability of a device.
5 cl, 4 dwg
FIELD: mechanical engineering.
SUBSTANCE: group of inventions relates to safety technology and is used as a device for relieving excess pressure for use in sanitary fields of application. The pressure relief device (12) comprises a bursting disk (30) and a supporting element (32). The bursting disk (30) includes a bursting area and a flange section. The supporting element (32) of the bursting disc (30) includes an annular inner bushing, an outer peripheral area, spaced radially from the inner bushing, and one or more connecting segments extending between the inner bushing and the outer peripheral area. Connecting segments restrict one or more embossed areas, located between the inner bushing and the outer peripheral area of the supporting element (32). There are structural versions of the supporting element and the bursting disc designs.
EFFECT: group of inventions is aimed at improvement of reliability of the pressure relief device operation.
22 cl, 11 dwg
FIELD: energy industry.
SUBSTANCE: safety valve of single action comprises a housing with a tear-off element mounted in it. The tear-off element is made as a stem with a neck in the middle part of it, and a notch. The notch is a stress riser on the neck. The diameter of the said neck is calculated for the actual tensile strength of the stem material. The stem comprises at its ends a male thread. With one threaded end the stem is screwed into the disc with delivery outlets, mounted in the housing by male adapter of the input. With another threaded end the stem is screwed into a threaded hole of the piston compacted in the housing. The radial holes are made in the wall of the housing, which are hermetically separated from the male adapter of the input by the piston seal.
EFFECT: creation of the safety valve of single action with a stable actuation pressure.
2 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: latching mechanism is inserted into a housing of a hydrodynamic or hydraulic machine with working medium. The latching mechanism includes a latching mechanism body for installation on the housing, for example by screwing-in or insertion. The latching mechanism body has a feedthrough hole, into which a latching mechanism core is inserted. The latching mechanism core is directly connected to the latching mechanism body by means of a fuse element fusing at the specified temperature. Besides, the core can be connected to an intermediate element tightly installed in the latching mechanism body so that the feedthrough hole is sealed against working medium leakage. The core has a blind hole open to a working space so that working medium can flow into the latching mechanism core.
EFFECT: simplifying the structure and reducing the time required for a latching mechanism actuation.
7 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: method to record the fact of hydraulic medium overpressure and recording of its maximum value is based on using dependence between compression force and elastic deformation of a spring. The recording of the overpressure fact is carried out by means of damage of the control membrane with a stem driven by a piston under action of hydraulic medium pressure force. The position of the stem after fixation of the fact certifies maximum pressure, which influenced all elements of the hydraulic system. There is a device that realises the above method for recording of the hydraulic medium overpressure.
EFFECT: development of a method and a device making it possible to record the fact of overpressure and its maximum value without participation of an operator.
2 cl, 2 dwg
FIELD: blasting operations.
SUBSTANCE: explosion-proof panel comprises a metal armoured frame with metal armoured plating and the filler, has in the ends four fixed pipe supports. In the plating of the explosive object four support rods are tightly sealed, which are telescopically inserted in the fixed pipe supports of the panel. The filler is made in the form of a dispersion system air-lead in the form of crumbs. The support rods are made elastic. The explosion-proof panel additionally comprises elastic-dampened collapsing disposable elements that are attached to the sheets-stops by means of the damping base by the screws. The sleeve in the form of a truncated cone is rigidly attached to the base. The lower base of the truncated cone is connected to the base. The disposable element abuts to the upper base of the truncated cone, made in the form of a sleeve from collapsing material, which is clamped from below by the sleeve-type clamping element for fixing the elastic part of the collapsing element, made in the form of a conical spring. The lower base of the conical spring is fixed in the grooves of the damping base by cast polyurethane. Fixing of the clamping element is carried out by means of latches. The disposable element is made in the form of a coil spring from collapsing material.
EFFECT: increase in reliability of triggering of explosion-proof devices and ensure the return of these structures in the initial position after the explosion.
SUBSTANCE: in a protective damageable structure of fencing containing reinforced-concrete slabs with dimensions of 6000×1800 mm, a slab consists of damageable and non-damageable parts. A non-damageable part is made in the form of load-carrying ribs arranged along the contour of the damageable part, and the damageable part is made in the form of at least two coaxially located cavities in the building wall, one of which is external and formed with planes of a regular quadrangular flattened pyramid with a rectangular base, and the other one is internal and represents two inclined surfaces connected by means of a rib with formation of a slot; with that, wall thickness from the rib to the external surface of the building fencing shall be at least δ=20 mm. At action of blast explosion load, this section of the wall can be divided into separate parts, and opposite the damageable part, on the outer side of the building fencing there located is a protective screen from material of increased strength, for example antiarmour material that is fixed on at least three horizontally located pins that are perpendicular to the building fencing, on the ends of which there fixed are disks and which pass through holes in the protective screen. Disks located on the right side of the pins are buried in the building fencing, and elastic members supporting the protective screen to the building fencing are borne against disks on the left side of the pins.
EFFECT: improving reliable actuation of damageable explosion-proof devices at emergency explosion at the site.
SUBSTANCE: in a shock absorber of single action, which includes a housing, elastic and damping elements, there additionally contained is an elastic damping destructible element that is attached on support pins to plates-stops by means of a damping base with screws, and a sleeve of single action, which is made from brittle damageable material, for example porcelain, is attached by means of a flange with screws to the damping base coaxially to the pin. The elastic part of the shock absorber is made in the form of at least three plate springs facing with their convex part to the side of the pin axis, on which there is a threaded section with a small pitch for attachment of a clamping element of a sleeve type with grooves for fixation of one of the ends of plate springs, the other end of which is fixed in the damping base by means of cast polyurethane.
EFFECT: improving reliable actuation of explosion-proof devices at emergency explosion at the site.
FIELD: oil and gas industry.
SUBSTANCE: explosion proof panel for on-board safe LNG fuelling system is installed in ceiling of the engine room. The panel comprises metal armour-plated frame with metal armour plating and lead as filler. At butt ends there are four fixed supporting tubes. In coating of an explosive object there are four rigidly fixed supporting rods inserted telescopically into the fixed supporting tubes. To butt ends of the supporting rods additional elements damping blast effect are fixed.
EFFECT: increased operational reliability of explosion proof devices at accidental detonation at the object and ensured return of these structures into initial position upon detonation.
4 cl, 3 dwg
SUBSTANCE: in an explosion resistant panel containing an armoured metal frame with an armoured metal cover and a lead filler, provided in end faces with four fixed supporting branch pipes, and in the covering of the explosive object there rigidly fixed are four supporting bars that are telescopically inserted into fixed supporting branch pipes of the panel, the filler is made in the form of an air-lead disperse system; with that, lead is made in the form of chips, and supporting rods are elastic, to end faces of the supporting bars on the side facing to the metal frame, to which additional members are attached, which damp the action of impact wave, which are made from elastomer, for example polyurethane, or combined, for example elastic damping, and as an elastic member of combined additional members damping the action of impact wave there used is a conical spring, the lower base of which is borne against thrust plates and fixed on them by means of polyurethane filling, and the upper base faces to the side of the armoured metal cover.
EFFECT: improving reliable actuation of explosion protective devices at emergency explosion at the site and providing return of the same structures to initial position after explosion.
FIELD: blasting operations.
SUBSTANCE: shock absorber for explosion-proof objects comprises a metal armoured frame with a metal armoured shell and the filler which is made in the form of a dispersion system air-lead. Lead is shaped in the form of crumb. The frame has fixed support tubes in the ends. In the coating of the explosive object three support rods are rigidly embedded with sheet-abutments in the upper part, which are telescopically inserted in the fixed support tubes in the metal armoured frame. In the upper part of the support rods the elastic-damping elements are fixed, one end of which is rigidly connected with its base to the sheet-abutments and the other is located freely. Each of the elastic-damping elements is fixed by screws on its base, designed in the form of a circular disc made of rigid vibration damping material such as Agate, on sheet-abutments rigidly connected to the rods. The base of the elastic-damping element is connected to the sleeve of elastomer, having a central hole through which the rod passes. The sleeve has three openings coaxial with the rod, in which the elastic elements are located, such as cylindrical coil springs, the upper end of which is connected by fasteners to the base, and the lower is in pressed condition and protrudes beyond the lower face of the sleeve. The movable plate rests against the lower ends of the elastic elements, which is pivotally connected with three elastic elements, e.g., compression springs, the second ends of which are pivotally connected to the friction sleeve covering the rod with tension.
EFFECT: invention enables to improve reliability of actuation of explosion-proof devices in case of emergency explosion.
FIELD: blasting operations.
SUBSTANCE: device for selection of the hole size for easy detachable element of construction and its mass, designed to protect buildings and structures from explosions comprises an explosive chamber, in the upper base of which there is a hole overlapped by the easy detachable element. The hole area can vary by screwing the removable rings. The detachable element overlaps the hole in the ring, over which a protective shield is fixed. The second hole is overlapped by the valve which is pressed against the hole by means of an electromagnet and opens by the spring during opening of the contacts. The pressing force of the valve and compressing the spring is set so as the total force to be equal to the allowed pressure multiplied by the area of the valve hole, i.e. ΔF=Fe.m - Fpr=ΔPdm Scl, where Fe.m is the force of the electromagnet pressing the valve to the hole, N/m2; Fpr is force of compressing the spring, opening the valve, H:Fpr=(10÷15) gm, where g = 9.81 m/s2; m is mass of the electromagnet core with the valve, kg; ΔRdm is allowable pressure drop for the model plant; Scl is the area of opening the valve, m2. The easy detachable comprises a metal armoured frame with metal armoured coating and filler - lead having at the ends four fixed support tubes. In coating of the explosive object four support rods are rigidly embedded, which are telescopically inserted in the fixed support tubes of the panel. The filler is made in the form of the dispersion system air-lead, at that the lead is made in the form of crumbs, and the support rods are made elastic. Additionally, it comprises elastic-damping collapsing elements of single action, which are mounted on the support rods to the sheet-abutments through the damping base with the screws. A sleeve of single action is attached by the flange with the screws to the base coaxially to the rod, made of fragile, collapsible material such as porcelain. The space between the sleeve and the elastic part of the collapsible element is filled with construction foam, which connects the leaf springs with the sleeve of single action, forming a three-dimensional damper, which contributes to reliable fastening of the leaf springs and receives the first shock pulse.
EFFECT: invention enables to improve the efficiency of protection against explosions.
SUBSTANCE: this structure comprises reinforced concrete 6000x1800 mm panels. This panel consists of destructible and non-destructible parts. Note here that the latter is composed of load-bearing ribs arranged in contour of destructible part. The latter is composed of at least two coaxial recesses in building wall. One, outer recess is composed by sides of the right quadrangular truncated pyramid with rectangular base. Another one, inner recess is composed by two inclined surfaces connected by ribs to make a slit. Note here that wall thickness from said rib to building guard should make at least δ=20 mm. At impact or explosive loads said wall section can be divided into separate parts. At least three horizontal rods with shielded screen secured thereat are attached to load-bearing ribs in outline of purposefully destructible structure. Said screen is locked by springs at said rods arranged between thrusts rigidly jointed with ribs and shielded screen. To collect of fragments of destructed structure a trough is secured to rods located at lower part.
EFFECT: higher reliability of blast-proof devices.
SUBSTANCE: explosion-proof panel contains a metal armor framework with a metal armor coating and lead filler, four fixed supporting branch pipes in end faces, and in the coating of an explosion-hazard object four bearing rods are rigidly fixed, which are inserted telescopically into fixed supporting branch pipes of the panel, and the filler is designed as air-lead disperse system, and lead is designed as crumb, and the bearing rods are made elastic, and in addition the elastic damping collapsing single-acting elements are provisioned which are fastened on bearing rods to stop sheets by means of the damping base with screws, and to the base, coaxially with the rod, the truncated cone bushing is rigidly fixed, and its lower truncated cone base is connected with the base, and the single-acting element rests against the top truncated cone base, this element is made as a bushing from fragile collapsing material, for example porcelain, which is pressed from below by the tightening element of bushing type with grooves for fixing of the elastic part of the collapsing element designed as the conic spring facing with the top base towards the tightening element of bushing type, and the lower base of the conic spring is fixed in grooves of the damping base by means of moulding polyurethane, and fixing of the tightening element of bushing type is performed by means of latches installed on the rod surface. The single-acting element is designed as at least three rods from the fragile collapsing material placed between stop sheets and the tightening element of bushing type with grooves for fixing of elastic part of the collapsing element, and one end of each rod by means of hinges is fixed on stop sheets, and the rods are located with an inclination about 15°÷25° from the elastic dampening collapsing single-acting element aside.
EFFECT: improvement of reliability of action of explosion-proof devices at accident explosion on a site and providing of recovery of these structure into initial state after explosion.
SUBSTANCE: explosionproof panel for emergency protection of industrial buildings and structures contains explosion-proof elements which are designed as an explosion-proof plate containing a metal armor framework with a metal armor coating and a lead filler which has four fixed supporting branch pipes in end faces, and in the building coating four bearing rods are rigidly fixed which are telescopically inserted into fixed supporting branch pipes of the panel, and the filler is designed as the disperse system air-lead, and lead is designed as crumb, and the bearing rods are made elastic, and to the end faces of bearing rods, from the side facing to the metal framework, the additional elements damping the shock wave are fixed, which are made of elastomer, for example, polyurethane, the additional elements are made combined, for example elastic damping, designed as an elastic element, for example a spring, filled with polyurethane. The additional elements are designed as a package of dish-shaped elastic elements, each of which contains a round base which by means of at least two pins is freely placed on a stop. One end of the pin is rigidly fixed on the stop, and another one - fits with a gap the hole made in the base and fixes it by the nut, to the lower part of the base, rigidly and coaxially to it the cylindrical barrel with a cavity and a hole is fixed, through the hole of which with a gap a rod passes one end of which is rigidly fixed on a stop, and another one - in an object coating, the rod freely fits inside the bushing one end of which is rigidly fixed on the stop, and another one - is freely moves, with a gap in the cavity of the cylindrical barrel. The package of dish-shaped elastic elements is placed with small preload, between the stop and the round base.
EFFECT: improvement of reliability of work of the personnel in explosion-hazardous rooms.
FIELD: building material and unit production.
SUBSTANCE: method involves supplying layer of fibrous vegetable material having predetermined thickness and width under press; pressing thereof and reinforcing the layer with wire ties; forming building member having dimensions of 4-5×25-30×50-60 cm3; laying thereof in forming tank lined with heat-resistance film material and slowly filling the tank with molten composite mixture heated up to 90-95°C, wherein the composite mixture includes solid hydrocarbons of paraffin series having 75-80°C melting temperature. The tank is filled with molten composite mixture up to level exceeding building member thickness for 1-1.5 cm.
EFFECT: increased efficiency of people protection in living, service and industrial rooms against neutron irradiation along with improved heat-insulation and heat accumulation in the room.