Heat exchanger inlet chamber
FIELD: machine engineering.
SUBSTANCE: distribution screen located in the gap between the casing and the tube bundle in the form of a shell with grooves of variable width, increasing proportionally to the distance from the inlet branch pipe.
EFFECT: increased reliability of a thick-walled heat exchanger by equalizing the flow rate, reducing the tubes vibration without increasing the metal capacity.
SUBSTANCE: heat exchanger device, particularly for vehicle heating systems, includes bowl-shaped body (12) of heat exchanger with external wall (18, 20) and internal wall (22, 24), positioned along longitudinal axis (L), so that external (18, 20) and internal (22, 24) walls form space for heat carrier medium flow; external wall (18, 20) features at least one choke (50, 52) for heat carrier medium flow; heat exchanger body (12) carries one choke (30) for spent gas flow, open at the side of internal wall (22, 24) of internal space (26) in the heat exchanger body (12); heat exchanger body (12) includes external body part (14) with external surrounding wall (18) and external wall-bottom (20) and internal body part (16) in internal surrounding wall (22) and internal wall-bottom (24); axial end zone (44) of external surrounding wall (18) in the external body part (14), positioned at some distance from external wall-bottom, features at least one choke (50, 52) for heat carrier medium flow.
EFFECT: improved design.
16 cl, 4 dwg
SUBSTANCE: heat exchanger comprises a housing provided with fittings for input and output of the coolant, the lids with fittings for input and output of the heat exchanging medium, and the bundle of heat exchanging tubes fixed in the holes of the tube grids, consisting of inner and the subsequent perforated plates with sealing material between them. Each tube grid is provided with the additional perforated plate. The housing is made with the inner recesses at the ends. The inner and the subsequent plates of the tube grids are clamped with the lids in the recesses of the housing. The heat exchanging tubes are equipped with clip bands.
EFFECT: simplification of manufacturing, improvement of reliability of the heat exchanger.
6 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: unit is placed in a leakproof housing composed of two parts. The first (upper) part is a cover in the form of a hollow metal cylinder with semispherical end wall on the closed side and fitted by a flange - on the open side. The second (lower) part is a base on which all components of an electronic device are fixed. The electronic components are arranged inside the housing as follows: a group cooler on which the most heat releasing components are installed, is mounted on the base. Posts providing for fastening of a horizontal perforated shield above the said components are installed on the base, the remaining components with less heat release - printed circuit boards with radio elements - are mounted on the shield. The inlet hole provided in the cover is aimed at the supply of dielectric cooling liquid inside the housing, the liquid passes inside the housing and washes all electronic components cooling them, then it enters the channels present in the group cooler body providing for additional withdrawal of heat, afterwards it is drained through the outlet hole provided in the base. Internal channels increase the efficiency of heat transfer from the components installed on the group cooler. The cooling liquid is supplied to the housing under high pressure by means of an external pump and can be included in the common circulating flow of cooling agent of the whole spacecraft.
EFFECT: improved efficiency of cooling the devices comprising radio electronic components and power modules with different heat release levels, including those intended to be used in the state of weightlessness.
4 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: dispensing chamber (5) is limited from outside by body (3), bottom (2) and grate (6) and interconnects central supply pipe (8) and side discharge channel (1) through a clearance between bottom (2) and end-face part of central supply pipe (8). Side discharge channel (1) is shaped by body (3) and central supply pipe (8). Grate (6) is installed in side discharge channel (1), while its porosity coefficient corresponds to a range from 0.3 to 0.8. The ratio of dimensions of chamber (5) corresponds to the conditions taking into account the interrelations, first of all, of a height of dispensing chamber (5) and inner diameter of central supply pipe (8); secondly, of a height of inlet into dispensing chamber (5) and inner diameter of central supply pipe (8); thirdly, of a height of dispensing chamber (5), a height of entrance into it and inner diameter of central supply pipe (8); fourthly, of a height of dispensing (5) and a height of entrance into it, radius of the lower part of body (3), inner and outer radii of central supply pipe (8); fifthly, of a distance from bottom (2) to step (7) at body (3) accordingly with the height of dispensing chamber (5) and with a radius of the lower part of body (3), a height of entrance into dispensing chamber (5), inner radius of central supply pipe (8); sixthly, of a radius of the lower part of body (3), inner radius of central supply pipe (8) and a height of entrance into dispensing chamber (5). The dimensions of a flowpath of dispensing chamber (5) are related with its hydrodynamic characteristics by a relation taking into account the mass flow rate of the working medium through a hole of grate (4), an average mass flow rate of the working medium through it, full pressure loss at grate (4), working medium density, average velocity of the working medium in central supply pipe (8), area of cross-section of a jet of the working medium falling on grate (6) jet of the working medium, a radius of the upper part of body (3), external radius of central supply pipe (8), reference radius of grate (6) and three empiric coefficients.
EFFECT: extending functional capabilities of a device at shaping a hydrodynamic irregularity at the exit of the dispensing chamber and simplifying its design.
5 cl, 1 dwg
FIELD: machine building.
SUBSTANCE: distributing chamber (5) is externally limited by a casing (3), a bottom (2) and a grid (6) and provides for the interconnection of a central supply pipe (8) and a lateral outlet channel (1) via a gap between the bottom (2) and the end face part of the central supply pipe (8). The lateral outlet channel (1) is formed by the casing (3) and the central supply pipe (8). The grid (6) is installed in the lateral outlet channel (1) and its porosity factor falls in the range from 0.3 to 0.8. Ratios of the distributing chamber (5) dimensions correspond to the conditions considering the interrelations of the height of the distributing chamber (5) and the inner diameter of the central supply pipe (8); height of the inlet to the distributing chamber (5) and the inner diameter of the central supply pipe (8); height of the distributing chamber (5), height of the inlet to it and the inner diameter of the central supply pipe (8); height of the distributing chamber (5) and height of the inlet to it, radius of the lower casing (3) part, outer radius of the central supply pipe (8); distance from the bottom (2) to the step (7) on the casing (3) respectively with the height of the distributing chamber (5), and with the radius of the lower casing (3) part and height of the inlet to the distributing chamber (5); radius of the lower casing (3), inner diameter of the central supply pipe (8) and height of the inlet to the distributing chamber (5). Dimensions of the flow passage of the distributing chamber (5) are related with its hydrodynamic characteristics by a ratio considering the mass flow of working medium through the grid (4) hole, average mass flow of working medium through the grid, total pressure loss at the grid (4), density of working medium, average velocity of working medium in the central supply pipe (8), area of the cross-section of the working medium jet falling on the grid (4), radius of the upper casing (3) part, outer radius of the central supply pipe (8), reference radius of the grid (6) and three empirical coefficients.
EFFECT: expanded functionality at forming hydrodynamic irregularity at the distributing chamber outlet and simplified design.
5 cl, 1 dwg
SUBSTANCE: invention relates to the field of heat engineering, namely, to a system of guide discs for a heat exchanger, to a heat exchanger with application of the system of guide discs, to the method to manufacture a heat exchanger, and also to a set for equipment or re-equipment of the heat exchanger. The system of guide discs according to invention has multiple guide discs, which are designed to guide the medium flowing in the crisscross counterflow in the core of the heat exchanger and in the zone of the jacket between the core and the jacket surrounding the core. Each guide disc is made as capable of placement onto the heat exchanger core.
EFFECT: simplified assembly, reduced costs for manufacturing and re-equipment of heat exchanger.
22 cl, 27 dwg
SUBSTANCE: plate-like heat exchanger includes at least one heat exchange plate, and preferably a group of heat exchange plates. At least one of the heat exchange plates includes at least one section having corrugations intended for installation against the corresponding corrugations of the heat exchange plate of the corresponding structure. There are at least corrugations of the first type and at least corrugations of the second type. Location and number of corrugations of the first type and corrugations of the second type is different. Another object of the invention is a heat exchange plate including at least one section having corrugations intended for installation against the corresponding corrugations of the heat exchange plate of the corresponding structure. There are at least corrugations of the first type and at least corrugations of the second type; with that, number of corrugations of the first type and corrugations of the second type is different.
EFFECT: invention allows improving characteristics of a heat exchange plate.
14 cl, 9 dwg
FIELD: machine building.
SUBSTANCE: surface condenser for differential fluidisation of vapour components of mixed flow consists of at least two successively connected heat exchangers jointed to each other without end covers and tube bridges with their tubular grids so, that tubes of each preceding heat exchanger downstream mixed flow are elongated beyond outlet enclosure. Their diametre is less, than diametre of tubes of the next heat exchanger and are inserted inside of them forming a gap to drain condensed component. A cavity and channel for withdrawal of drained component are made in the outlet enclosure of the preceding heat exchanger or in an inlet enclosure of the next heat exchanger.
EFFECT: reduced metal consumption of condenser and reduced hydraulic resistance along circuit of volatile components motion due to connection of heat exchangers.
9 cl, 7 dwg
FIELD: power engineering.
SUBSTANCE: plates are arranged in parallel with the main plane of length and include several plates of heat exchanger and a strengthening plate. Plates of the heat exchanger are arranged next to each other and form a packet of plates with the first plate-to-plate gaps and the second plate-to-plate gaps. Each plate of the heat exchanger has four through holes, which form channels though a packet of plates. The plates of the heat exchanger comprise the extreme plate of the heat exchanger at one side of the packet of plates and the extreme plate of the heat exchanger at the opposite side of the packet of plates. Two of the specified plate-to-plate gaps in the packet of plates form an appropriate extreme plate-to-plate gap at the appropriate side of the packet of plates, which are limited in outside direction of one appropriate extreme plates of the heat exchanger. Strengthening plates are arranged outside one of the first plates of the heat exchanger. Strengthening plates have the main area, which passes in parallel to the plane of length and which comprises a strengthening pattern, which is arranged near two channels and comprises at least one groove passing in direction outside from the heat exchanger plates.
EFFECT: increased strength, simplified manufacturing.
17 cl, 11 dwg
FIELD: power industry.
SUBSTANCE: in manufacturing method of radiator with radiator cover the strong flexible material is applied to upper side of radiator and/or at least to one side of the radiator cover, which faces the radiator, at least in some places by means of bonding or mechanical connection, and strong flexible material forms strong and resistant combination with the surface of the radiator and/or at least with one side of the radiator cover, which faces the radiator; at that, strong flexible material is applied to prior to application of powder coating of radiator and/or cover of the radiator; after powder coating has been applied, radiator together with the radiator cover is heated to hot drying temperature of powder coating; at that, owing to thermal effect the viscosity of strong flexible material changes so that the distance appears between the radiator cover and radiator, which excludes the contact of metals between radiator and at least one cover of the radiator; at that, viscosity of strong flexible material changes within temperature range of 120 to 180°C.
EFFECT: simple and economic manufacture, and eliminating the noise during operation.
4 cl, 3 dwg
FIELD: the invention is assigned for application in heat-exchange apparatus in particular in chemical and other industries specifically for heat treatment of bulk material.
SUBSTANCE: heat-exchange apparatus has housing, heat-exchange pipes arranged vertically and fixed in pipe grates. Heat-exchange apparatus is provided with discharge arrangement placed under lower pipe grate and composed of fixed and moving plates which have hollow holes corresponding to hollow holes in the lower tubular grate. At that the fixed plate is joined without gap with lower pipe grate and moving plate is installed with possibility to make back-and-forth motion in horizontal plane overlapping size of holes. Moreover the moving plate is installed on vertical flat rings.
EFFECT: allows to expand technological possibilities of using vertical housing tube heat-exchange apparatus for realization of heat-exchange between solid bulk material and liquid or gaseous heat-carrying agent, intensifies heat-exchange and give possibility to regulate this process.
2 cl, 3 dwg
FIELD: placement in structural members of heat-exchange apparatuses.
SUBSTANCE: the spacer plate has a rim with rows of strips made with deepened in the form of circumferences, the dimensions of the circumferences of the arcs of deepenings are made variable with a increase from the periphery to the center of the heat-exchange apparatus.
EFFECT: uniform distribution of flow of the heat-transfer agent in the cross section of the heat-transfer apparatus.
2 cl, 3 dwg
FIELD: heat-exchanging equipment production, particularly for power machinery building.
SUBSTANCE: building cradle comprises system including members with support-and-guiding surfaces adapted to temporarily receive support panel for fan engine installation, wherein the support panel is temporarily secured to above support-and-guiding surfaces. The support-and-guiding surfaces are also used to receive support plates to fasten tension bar ends and connection plates arranged between the support plates. Building cradle member for support panel receiving define a circle in plane and has at least one horizontal support-and-guiding surface. Building cradle members for support and connection plates are mainly formed as prisms having trapezoid cross-sections with at least outer inclined face forming support-and-guiding surface to receive support and connection plates of central support member for fan engine installation.
EFFECT: increased manufacturability of gas air-cooling plant production, simplified assemblage, reduced costs and increased reliability and service life of structure to be produced.
10 cl, 6 dwg
FIELD: applicable in heat exchangers.
SUBSTANCE: the method for positioning of the fitting relative to the heat exchanger manifold consists in provision of a manifold with a wall having a through hole, provision of a fitting having a base, pipe connection projecting from the base and having an inner surface, and an opening passing through the base for provision of access to the inner surface; insert of the pipe connection in the hole from one side of the wall so that the fitting base would be on one side of the wall, and the pipe union part would be on the other side of the wall; deformation of the inner surface of the pipe connection with the aid of a tool for deformation inserted through the mentioned opening in the mentioned base for expansion of the mentioned part of the pipe connection to a shape which prevents withdrawal of the mentioned pipe connection from the mentioned hole. The fitting/manifold attachment of a heat exchanger includes: a manifold having a wall having a thickness and a hole passing through the thickness from the outer surface of the manifold to its inner part; a hole having a preliminary shape; and a fitting having a base and a pipe connection projecting from the base that can be deformed; a pipe connection having an outer surface, inner surface and a part projecting from the base to a distance exceeding the mentioned thickness of the mentioned wall; the pipe connection is deformed from the first shape to the second shape; in the first shape the outer surface of the pipe union corresponds to the preliminary shape of the hole for provision of a free insertion of the pipe connection into the hole with the part passing through the wall to the inner part of the manifold; in the second shape the mentioned part is increased so as to keep the pipe connection in the hole; the fitting has an opening passing through the base for provision of access to the inner surface of the pipe connection with the aid of a tool for deformation inserted through the opening for deformation of the pipe connection from the first shape to the second shape.
EFFECT: improved fitting/manifold attachment for a heat exchanger.
9 cl, 16 dwg
FIELD: boiler manufacture for protection against rubbing-out at combustion in boilers of coals containing abrasive ashes.
SUBSTANCE: the ash-protective probe for tubes of the heat-transfer tube bunch has for each tube of the tube bunch a stabilization section and a butt-joining section, whose shape is similar to the shape of the tube bunch, differing by the fact that the stabilization section for each tube of the bunch is provided with an inlet cellular component, whose walls are joined to the walls of the adjacent inlet cellular components adjoining them and has a transient section, and the butt-joining section is installed in the tube of the bunch, besides, the walls joined to the walls of the adjacent cellular components have a welded attachment in the points of butt-joining.
EFFECT: enhanced adaptability to mounting and maintainability whenever it is necessary to replace the ash-protective probe and bunch tubes.
FIELD: lining apparatuses for plate type heat exchanger, plate type heat exchanger and method for making heat exchanger having pack of heat exchanging plates and end plate.
SUBSTANCE: lining apparatus is designed for heat exchanger including pack of heat exchanging plates and end plate. Said end plate has outer side and inner side turned to pack of plate and at least one opening. In said opening lining apparatus is mounted. Lining apparatus includes first portion made of metal sheet and having, practically cylindrical part of tube and butt zone, and second portion made of metal sheet and having, practically cylindrical part of tube and butt zone. Part of tube of first portion is designed for introducing to said opening. Thickness of material of first portion exceeds that of material of second portion at least in overlap zone. Plate type heat exchanger includes pack of heat exchanging plates and end plate. The last has outer side and inner side turned to pack of plate and at least one opening. Lining apparatus is mounted in said opening. Method for making heat exchanger including pack of heat exchanging plates and end plate. The last has outer side and inner side turned to pack of plate and at least one opening. Method comprises steps of providing first portion and second portion; introducing part of tube of second portion into part of tube of first portion in such a way that to create region where tube portions are mutually overlapped. In said region thickness of material of first portion exceeds that of material of second portion. Part of tube of second portion is joined with part of tube of first portion by means of welded joint.
EFFECT: improved design, enhanced quality of lining apparatus for plate type heat exchanger, simplified process for making lining.
13 cl, 3 dwg
FIELD: heating equipment, in particular, heating systems of buildings operating on hot water, water vapor and other heat-transfer agents.
SUBSTANCE: the heating appliance is made in the form of a section with duct for the heat-transfer agent, formed by ribbed members, each ribbed member represents a plate, one of the plates is made at least with three stepped bulges in the form of pipe connections, whose wider part adjoins the plate, and the ducts for the heat-transfer agent are formed by pipe connections of the adjacent ribbed members inserted in one another, the heating appliance is provided with covers, one of which is connected to the first ribbed member, at the other to the last ribbed member of the section with formatting of mixing chambers, the inlet cover in the direction of flow of the heat-transfer agent is provided with inlet and outlet pipe connections, besides, the inlet pipe connection of the inlet cover is installed with a clearance of 0.9 to 1.3 mm relative to the beginning of the duct for inlet of the heat-transfer agent.
EFFECT: enhanced convective heat exchange of the heat-transfer agent, reduced cost of manufacture, simplified process of assembly.
SUBSTANCE: invention relates to heat engineering, namely, to plate-type heat-exchangers. The heat-exchanger consists of a core enclosed in a shell with upper and lower walls and a pair of opposite side walls. The heat-exchanger housing contains upper plate being adjacent to the upper wall and lower plate being adjacent to the lower wall and a pair of side plates adjoining each of side walls. In addition, the upper plate is attached to the lower plate and side plates are interconnected. So the housing plates are interconnected by means of threaded fastenings and include spaced pins. Besides, the side plate pins are placed between the upper and lower plates pins.
EFFECT: reduction of heat-exchanger production and assembling costs due to support housing strengthening and using less strong and less expensive shell.
19 cl, 6 dwg
SUBSTANCE: device for fastening of adapter for joined part on radiator with deformable plates installed between its tubes for cooling liquid, comprises support part that bears adapter for joined part and coupled part, which have several wedge-shaped bulges inverted to each other, and on which connection system elements are arranged for connection to each other. Support and coupler parts each are "П"-shaped with two edge sections and transverse section passing in between, at that bulges are installed pairwise opposite to each other at edge sections and in transverse sections of support part and coupled part. When connecting support and coupled parts, available bulges are impressed into gaps between tubes of radiator, deforming its plates and fixing to them.
EFFECT: provision of especially efficient fixation of device fixed on radiator.
9 cl, 4 dwg
FIELD: heating systems.
SUBSTANCE: heat exchanger consists of bank of heat exchange coil tubes arranged in the form of platen, the ends of which are fixed in tube sheets; every two adjacent heat exchange coil tubes are attached to each other by means of shaped straps equally spaced as to platen height in staggered order; at that, shaped straps and fasteners have the same material as the tubes.
EFFECT: design with proposed tube bank design will allow obtaining small-sized heat exchanger meeting requirements for reliability, manufacturability, erection at high specific thermal stresses of occupied volume of nuclear power plant.