(57) Abstract:The invention relates to household and industrial gas units and is designed to protect the gas supply systems in emergency situations, such as off gas in case of fire. Terminatory valve includes a housing. In the cavity of the body is placed a transverse sprocket. The outer rim sprocket is fixed in the housing retaining ring connected by spokes to the hub. The latter provided with a guide rod spring-loaded locking element. In one of the spokes are made through the longitudinal channel. It from the side of the rim is set to the pressure screw and posted by the movable pin. The latter acts on the ball stopper that is located in the groove of the rod and locking it in the open position. Between the pressure screw and a movable pin posted by fuse. Fuse made in the form of thermosensitive cylinder. In the walls of the spokes in the area of thermosensitive cylinder holes. These holes are perpendicular to the axis of the cylinder. The result is increased reliability of operation thermoshaping valve by increasing the stability of the valve opening temperature and Lisitsa to domestic and industrial gas units and is designed to protect the gas supply systems in emergency situations, for example, the off gas in case of fire.Known automatic terminatory valve, comprising a housing, a cavity which is opposite the bore hole has the locking element is spring-loaded and is equipped with a stopper and a fusible link, the stopper is made in the form of a washer with distantierului legs with one hand and restrictive feet on the other side, and fuse in the form of a Cup with two diametrically spaced grooves, which are placed in the wall section of the washer, the internal cavity of the glass filled with fusible substance, and through its open end withdrawn fixing the locking element of the rod, and the locking element is designed in the form of a ball (see patent RU 2149303, IPC 7 F 16 TO 17/40, 20.05.2000).However, this terminatory valve does not ensure the required stability of operation at a given temperature, which limits the scope of its use.Closest to the invention to the technical essence and the achieved result is terminatory valve, comprising a housing, a cavity which is placed a transverse sprocket, outer rim which is fixed in the housing retaining ring connected by spokes to the hub, where the longitudinal channel, which side of the rim is set to the pressure screw and posted by the movable pin acting on the ball stopper that is located in the groove of the rod and locking it in the open position, the pressure between the screw and the movable pin posted by fuse (see catalog company AZ INDUSTRIETECHNICK GmbH, DE, 20.06.2001, S. 3. Termorazdelitelnymi valve TGSA).This valve ensures its automatic operation, however, this valve has a number of disadvantages that are associated with those that do not provide stable triggering a fuse temperature depending on the load, is not achieved, the stability of the load on the ball stopper depending on the deviation of the radius of the notches on the stem of the locking element, the valve has a relatively large hydraulic resistance (large pressure loss) due to sudden changes in flow area.Task to be solved by the present invention is directed, is to increase the reliability of operation thermoshaping valve by increasing the stability of the valve opening temperature, reducing the hydraulic resistance of the flow channel of the valve and increase the stability of the load on the ball stopper. This stated sprocket, the outer rim which is fixed in the housing retaining ring connected by spokes to the hub, provided with a guide rod spring-loaded locking element, and in one of the spokes are made through the longitudinal channel, the sides of the rim is set to the pressure screw and holds the movable pin acting on the ball stopper that is located in the groove of the rod and locking it in the open position, the pressure between the screw and the movable pin posted by fuse, the latter made in the form of thermosensitive cylinder, and in the wall of the spokes, in the area of thermosensitive cylinder, with holes, perpendicular to the axis of the cylinder.In addition, the side wall of the groove in the stem of the locking element from its free end may be made inclined, and the output end face of the locking element is equipped with a fairing with decreasing cross-section.Analysis of timosaponin valves showed that a significant effect on the stability of the valve has a design of a structural element that hosts the fuse, as well as the design of the fuse block. Performing in the wall of the spokes in sanitarios thermosensitive cylinder when it is triggered, that dramatically increases the speed of operation of the valve in emergency situations by reducing the inertia of the valve associated with the process of increasing the pressure inside the channel, which has a thermosensitive cylinder. Design thermoshaping valve allows you to use as a fuse sensing cylinders, which produced industrial and manufacturing technology which has been well developed, which also contributes to increasing the reliability of operation thermoshaping valve. Additional opportunities for improving the reliability of valve operation gives the execution a side wall of the groove from the side of the free end of the rod, which cooperates with ball stopper, inclined, i.e., formed by a conical surface. As a result of contact of the ball with the side of the inclined wall of the groove of the reaction support is always perpendicular to the generatrix of the conical surface, regardless of the location of the ball of the stopper relative to the grooves, which also increases the stability of the actuation of the valve by reducing the requirements to precision grooves or ball stopper. The execution of the locking element with the fairing with decreasing cross-section of postvisit the seat face of the locking element to form the surface of the housing, that provides the opportunity to further reduce the hydraulic losses in the flow area of the valve.Thus, achieved the goals set forth in the invention problems - increased reliability thermoshaping valve.In Fig.1 shows a longitudinal section thermoshaping valve, and Fig.2 shows in an enlarged size of the structural element of the valve in the place of installation of thermosensitive cylinder.Terminatory valve includes a housing 1, in the cavity of which is placed a transverse sprocket 2, the outer rim 3 which is fixed in the housing 1 retaining ring 4 and is connected by a 5 spokes with the hub 6, provided with a guide rod 7 8 is loaded by a spring 9 of the locking element 10. In one of the spokes 5 are through the longitudinal channel 11, which side of the rim 3 has a pressure screw 12 and in which is placed a movable pin 13 acting on the ball stopper 14, which is located in the groove 15 of the rod 8 and locking it in the open position. Between the pressure screw 12 and a movable pin 13 posted by fuse 16. Fuse 16 in the form of thermosensitive cylinder, and in the wall of the spokes 5, in the area of thermosensitive cylinder, with holes 17th end made inclined. The output end of the locking element 10 is equipped with a fairing 19 with decreasing cross-section.In the initial position terminatory valve is in the open position. This spring 9 located between the locking element 10 and the sprocket 2 is compressed and held in this condition by means of a ball stopper 14. In emergency situations, for example when the temperature in the valve or around it, the fuse is melted. As a result, the force of the adjusting screw 12 is no longer transmitted to the movable pin 13 and the latter no longer holds the ball stopper 14 in the groove 15. When the rod is released and under the action of the spring 9 shut-off element 11 by moving to the extreme right position, blocks the flow area of the housing 1 by putting the valve in closed position.The present invention can be used wherever you want to automatically shut off the flow area of the pipeline, in particular gas in emergency situations, such as fires. 1. Terminatory valve, comprising a housing, a cavity which is placed a transverse sprocket, outer rim which is fixed in the housing retaining ring and connect the th of spokes are arranged end-to-end longitudinal channel, which side of the rim is set to the pressure screw and holds the movable pin acting on the ball stopper that is located in the groove of the rod and locking it in the open position, the pressure between the screw and the movable pin posted by fuse, wherein the fuse is made in the form of thermosensitive cylinder, and in the wall of the spokes, in the area of thermosensitive cylinder, with holes perpendicular to the axis of the cylinder.2. Terminatory valve under item 1, characterized in that the side wall of the groove in the stem of the locking element from its free end is made inclined.3. Terminatory valve under item 1, characterized in that the output end face of the locking element is equipped with a fairing with decreasing cross-section.
FIELD: processes and equipment for controlling flow rate of fluids in systems for heating cars of railway road trains.
SUBSTANCE: apparatus includes housing with inlet and outlet branch pipes between which locking organ is placed. Locking organ is joined with one end of two-arm lever that couples locking organ with elastic member, for example with membrane. Other end of lever is immersed into easy-to-melt material filling target chamber and being in thermal contact with heating member. Locking member of ferromagnetic material (in variant in the form of magnet) is placed in electromagnetic field created by coil.
EFFECT: simplified design, lowered energy consumption at operation.
10 cl, 3 dwg
FIELD: safety valves.
SUBSTANCE: automatic thermo-valve comprises housing whose space receives gate valve spring-loaded to the through hole and provided with stop. The stop does not allow the gate valve to cover that through hole and is made of a bar made of the thermosensitive material and interposed between the gate valve and through hole. The ends of the bar abut against the wall of the housing space. The thermosensitive material is a material with shape memory, is bent preliminary, and does not prevent the through hole to be covered.
EFFECT: enhanced reliability.
1 cl, 5 dwg
FIELD: mechanical engineering, namely, preventive valves, possible use for preventing destruction of working vessels due to excessive pressure.
SUBSTANCE: preventive device with bursting membrane contains body 1 with coaxial input and output apertures, compression spring 7 (corrugated pipe), recess 9, insert 10 with liquid spray diffusers 11. Bursting membrane 3 is held on output aperture. Destroying element is made in form of a drill with rigidly mounted propeller 6. the drill is mounted on rod 5, positioned in an insert with possible turning.
EFFECT: lowered scattering of preventive device activation pressure value, meaning increased reliability of device activation.
1 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention relates to safety valves and it is designed for preventing destruction of working reservoirs under action of excess gauge pressure. Proposed safety valve has housing with intake and outlet holes, spring-loaded cup, breakable element made of easily melting material and heating element. Valve is provided with insert with ring groove. Said insert engages with rod. Breakable element is installed between insert and bottom of spring-loaded cup. Heating element is located around breakable element on outer surface of housing and is connected to supply source through thermal relay. Holes are made in base of insert. Second end of spring interacts with ball through seal. Said ball closes inlet hole.
EFFECT: improved reliability of operation of safety valve, provision of safety at operation with aggressive gases in emergency situations.
FIELD: valving systems.
SUBSTANCE: valve comprises hollow housing that receives the seat, gate provided with rod, and guiding bushing. The rod of the gate passes through the guiding bushing for permitting sliding with respect to it, is spring-loaded with respect to the guiding bushing in the direction to the seat, and is provided with the member that is made of a thermosensitive material and causes the gate to be opened. The member is made of a rod. The rod passes through the opening made in the gate rod. The rod is mounted in the housing, and its ends abut against the ring step made in the wall of the space. The thermosensitive material has shape memory and is preliminary bent and allows the gate to move in the direction to the seat under the action of the spring.
EFFECT: simplified design and reduced cost of servicing.
FIELD: valving systems.
SUBSTANCE: check valve comprises housing provided with a hollow. The housing is made of a thermoplastic material and receives destructible diaphragm. The diameter of the destructible diaphragm is equal to the diameter of the hollow plus double height of the hollow. The diaphragm is provided with a metal washer whose diameter is equal to the diameter of the washer mines double thickness of the diaphragm.
EFFECT: enhanced reliability.
FIELD: gas appliances.
SUBSTANCE: invention relates to household and industrial gas appliances and is designed to protect gas supply systems in emergency conditions, for example, to shut off gas supply in the case of fire. The automatic thermal shut-off valve incorporates a direct-flow hollow casing with a seat, a stem with a valve and a valve guide. The spring-loaded valve stem slides in the valve guide towards the seat and is furnished with a heat-sensitive aid to the valve closed. The valve stem has a circular groove arranged on the side of the stem free end and extending from the valve guide to a distance from the valve making, at least, a sum of the valve guide thickness and compressed spring height. The aforesaid aid a rod laid in the circular groove enclosing the stem. The thickness exceeds the circular groove depth. In the valve open state, the rod seats in the circular groove pressed by the compressed spring into the valve guide. A shape-memory material, e.g. nithynol, with an initial bent shape enclosing the valve guide allowing it to move spring-loaded along with the valve towards the seat.
EFFECT: simpler valve design, lower operating costs.
4 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: set of invention relates to production of valves and accessories, and is designed to be used in hydrodynamic turbo machines or hydrodynamic couplings, hydrodynamic brakes or hydrodynamic convertors that feature working chambers filled with operating medium being heated in the machine operation. The proposed valve incorporates body (1) designed to seal hollow chamber and fuse (2). The latter is arranged in through hole (1.1) made in valve body (1) that receives bolt (4). The said bolt is inserted into aforesaid hole (1.1) to plug it. Fuse (2) joints bolt (4) to inner surface of valve body (1) inside through hole (1.1). The invention covers the valve design version, the method of producing thermal protection valve and hydrodynamic turbo machine with its working chamber plugged by the thermal protection valve.
EFFECT: increased reliability.
17 cl, 5 dwg
FIELD: instrument engineering.
SUBSTANCE: invention refers to armature engineering and aims at automatic shutdown of pipeline flow area, including particularly gas pipelines in emergencies, e.g. in fire. A heat gate valve comprises a direct-flow body with inlet and outlet, in-built spring-loaded gate and transverse sprocket. The external sprocket rim is fixed in the body and pinned to a hub that is provided with a gate rod guide. One of the pins has a through gallery that comprises a thrust screw and a travelling joint pin from the rim. The joint pin actuates a ball stopper that is provided in the rod groove and fixes open. Between the thrust screw and the travelling joint pin, there is a fuse strip. The body contains an internal cylindrical boring interfaced with inlet and outlet along the tapered hole. The gate represents in cross-section a cylinder with the equal conical end faceting that makes the angle 12°-17° with conical surfaces.
EFFECT: invention allows decreasing hydraulic resistance, simplifying design and assembly, and improving durability and reliability of the device.
2 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: invention is related to machine building and refers to protection of technological equipment. Safety valve with rupture element comprises valve body, heat-insulating and rupture elements. Valve additionally comprises lined weight lock, which closes opening in body of protected object. In upper cylindrical part of valve body there is a heat-insulating element installed, as well as sealing membrane. Membrane is pressed to valve body by means of cover. Cover is hingedly joined to lever. Lever interacts with bump stop. Unit of rupture element fixation is fixed with its upper part on lever, and with its lower part - to upper cylindrical part of valve. Rupture element consists of wire, stop bolt, fork, valve cover lever, nut, two drums. The latter are arranged accordingly in fork of valve cover lever and fork of upper cylindrical part of valve body. Ends of wire are inserted into holes of drums and then are wound on them. Clearance between forks makes around 1.5÷3 of wire diametre. Parametres of valve are in the following optimal ranges of values: c=H/Dn=2.5÷3.0, where Dn is diametre of upper cylindrical part of valve body, equal to maximum size of protected object body hole; H is height of assembled valve.
EFFECT: increased efficiency of technological equipment protection against explosions by improved performance and reliability of rupture element actuation.