The heat exchanger tube in tube"
The invention is intended for use in heat exchangers and can be used in the energy industry, in particular in liquid-propellant rocket engines. The invention includes inner and outer cylindrical shell mounted coaxially with the annular gap and forming a cavity for the working fluid, inlet and outlet headers with nozzles and additional shell forming an additional cavity, which is installed in the heat exchanger on the pylons, and the pylons are provided with channels for supplying and discharging the working fluid, and the additional cavities are interconnected through additional holes in the shell. The invention improves the performance of the heat exchanger without increasing its size. 3 Il. The invention relates to heat exchange apparatus (TA) and can be used in the energy industry, in particular in liquid-propellant rocket engines (LPRE).A known design of the heat exchanger in the cavity of which is to increase the surface of heat removal is installed in a cylindrical tube made in the form of a retinue in the spatial spiral ribbon located coaxially with the formation of kotatko of this technical solution is because of the large cluttering the path line of the fluid greatly increases the hydraulic resistance of the line and this reduces the useful capacity of the power plant, in particular LRE.The closest in technical essence of the present invention is a heat exchanger containing the inner and outer cylindrical shell mounted coaxially with the annular gap forming a cavity for the working fluid, inlet and outlet headers with nozzles (SU 567071 A, F 28 D 7/10, 1977). The coolant flowing through the inner membrane, heats or cools the working fluid flowing in the annular gap between the shells.The main disadvantage of this device is that when the performance improvement THAT increase the surface of heat removal grow its dimensions. This is especially unacceptable to THE one used in the construction of rocket engines, so as to increase the dimensions and weight of the engine as a whole.The objective of the invention is to remedy these disadvantages and improve THE performance without increasing its size and power reduction power plant.This object is achieved in that THE type of "pipe in pipe", moderadamente for the working fluid, inlet and outlet headers with nozzles, extra shell, forming an additional cavity, according to the invention an additional shell installed on pylons, which made channels, inlet and outlet of the working body and the additional cavities are interconnected through additional holes in the shell.The invention is illustrated by drawings, where Fig. 1 shows a longitudinal section of THE Fig. 2 - section a-a in Fig. 1 on the shells of the heat exchanger of Fig. 3 - section b-B in Fig. 1 additional shells.Principal elements of the proposed design THAT are: 1 - the outer casing; 2 - inner sheath; 3 - inlet manifold; 4 - outlet manifold; 5 - inlet pipe; 6 - outlet pipe; 7 - pole, 8 - pole; 9 - housing with pylons;
10 - supporting lattice;
11 - the internal sheath;
12 - the average additional sheath;
13 - additional outer sheath;
14 - lead pipe to the additional cavities;
15 - exhaust pipe from the secondary cavities;
a, b - holes in the wall, the average additional shell 12;
K - channels in the inner membrane;
L - channels on the outer dopan 1 and 2 internal shell, mounted coaxially with a gap. On the outer surface of the inner shell 2 is made channels K. Shell are connected by soldering to form the cavity for the working fluid. The outer casing 1 is made of the inlet 3 and outlet 4 manifold with nozzles 5 and 6, respectively.In the cavity of the inner shell 2 of the heat exchanger on the pylons 7, 8 of the housing 9 and the support grid 10 is installed additional shells 11, 12, 13 interconnected by soldering and forming a cavity with the channels M, LCavity with channels M, L are interconnected through holes "a", "b", made in the wall of the average additional shell 12.Case 9 pylon is attached to the outer shell 1. On the housing 9 in the pylons provided with channels for supplying and discharging the working fluid from the inlet 14 and outlet 15 nozzles. Supply pipes 5, 14 and outlet 6, 15 are interconnected.The heat exchanger works as follows.Heating or cooling the coolant is supplied into the cavity of the heat exchanger and washes the shell 2, 11 and 13, which are heat-exchange elements made of material having high thermal conductivity.The working body is divided into two streams.The first stream through podvodka 2. Passing through the channels, the working fluid is heated or cooled through the outlet manifold 4 and the pipe 6 extends from the heat exchanger.The second flow of working fluid through the supply pipe 14, the channel in the pylon 8 housing 9 and the hole in the wall, the average additional shell 12 enters the channels M, made on the outer surface of the internal sheath 11. Passing through the channels, the working fluid is heated or cooled, and through holes "b" in the wall of the shell 12 enters the channels L, made on the inner surface of the additional outer shell 13, where a further heat exchange with coolant, then the second thread through the channel in the pylon 7 and the discharge pipe 15 extends from the heat exchanger and mixed with the first stream.The use of the invention makes it possible to intensify the process of heat transfer due to more developed surface of the heat transfer elements and to improve THE performance without increasing its size.
The heat exchanger tube in tube" containing the inner and outer cylindrical shell mounted coaxially with the annular gap and forming a cavity for the working fluid, and characterized in that the additional membrane is installed in the heat exchanger on the pylons, which are provided with channels for supplying and discharging the working fluid, and the additional cavities are interconnected through additional holes in the shell.
FIELD: heat power engineering.
SUBSTANCE: according to proposed method, inner pipe is fitted into outer pipe after shape-treatment of at least outer surface of inner pipe or inner surface of outer pipe, and after fitting inner pipe outer pipe, inner pipe is expanded to bring outer surface of inner pipe in tight contact with inner surface of outer pipe, and shape-treatment of surface forms at least one channel to reveal leakage between two pipes. Before fitting in pipes at least outer surface of inner pipe or inner surface of outer pipe is coated with layer of solder, for instance, tin, and inner pipe is expanded so that outer pipe also expands, and solder layer between inner and outer pipes is melted. Outer pipe is expanded so that melted layer of solder is forced out from space between inner and outer pipe at least intone channel to reveal leakage. Such heat exchange pipe contains assembly unit consisting of outer pipe and inner pipe fitted at tight contact in between and at least one channel to reveal leakage passing in contact surface and near the surface between inner and outer pipes. Thin film-like layer of solar material, such as tin, is provided in place of contact between inner and outer pipes which, owing to melting, connects with inner pipe and outer pipe, inner and outer pipes adjoining with displacement. Invention makes it possible to increase heat transfer to value equal to or practically equal to that of solid heat exchange pipe and channel to reveal leakage remains free from filling medium, thus providing accurate and reliable revealing of leakage.
EFFECT: improved reliability.
15 cl, 6 dwg
FIELD: baking industry.
SUBSTANCE: proposed plant includes trap hood and heat exchange cooling unit connected with it and mounted under it; cooling unit includes jacket with pipe line located over its center. Heat exchange cooling unit is used for forced circulation of cold air between jacket and pipe line inside it directing the flow in required direction: in cold season outside air is delivered and at hot season air from floor areas is delivered.
EFFECT: simplified construction; enhanced ecology; saving of water.
FIELD: heat-exchange apparatus.
SUBSTANCE: air cooler comprises vortex heat exchangers, pipes of the vortex heat exchangers for flowing air to be cooled flows, swirlers, and actuator of purifying mechanisms. The actuator has hollow driving shaft mounted in the pipes and provided with a longitudinal groove throughout its length. The groove receives unmovable screw with a nut coupled with the bushing freely mounted on the shaft through a key. The brush holder with brushes are secured to the bushing. The outer side of the pipes of the vortex heat exchangers are provided with chutes for circulating a coolant. The vortex heat exchangers has a fining with a coefficient that varies according to the relationship where D is the diameter of the pipe, n is the number of chutes, and l is the chute width. The parameters vary in the following range: D = 50-800 mm and l = 20-50 mm. The chute height l1 =3-40 mm, the thickness of the pipe wall and the thickness of the chute wall
EFFECT: simplified structure and enhanced reliability.
5 cl, 7 dwg
FIELD: heat exchange.
SUBSTANCE: heat exchanger comprises housing with front and back supporting lags of different height, lens compensator, pipe bundle with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle which divides the pipe bundle into two sections. One of the sections is provided with branch pipes for supplying and discharging fluid to be heated, and the other section defines the back water chamber. The lens compensator is mounted in the vicinity of the back water chamber, and back supporting lag of the housing is provided with the additional supporting unit and mounted on the housing upstream or downstream of the lens compensator.
EFFECT: improved heat exchange and enhanced reliability.
FIELD: heat exchange apparatus.
SUBSTANCE: surface heat exchanger comprises casing provided with bearing lags, lens compensator, pipe bench with branch pipes for supplying and discharging heat-transfer agent, and front water chamber with the baffle that divides it into two sections. One of the sections is provided with the branch pipes for supplying and discharging of the fluid to be heated, and the other section defines the back water chamber. The pipe bench inside the housing is separated by the horizontal baffle provided with the by-pass port interposed between the lens compensator and back water chamber. The top and bottom sections of the pipe bench are separated with the vertical baffles arranged symmetrically to each other.
EFFECT: improved heat exchange and enhanced heat power and reliability.
FIELD: methods of treatment of fluocarbon raw.
SUBSTANCE: the invention is pertaining to the methods of treatment of fluocarbon raw. The method of treatment of fluocarbon raw provides for heating by means of high frequency induction of a heating zone of a reaction chamber up to the temperature of no more than 950°C, heating in the heating zone of fluocarbon raw, which contains at least one fluocarbon compound, so, that the fluocarbon compound dissociates with production of at least one predecessor of fluocarbon or its reactive kinds; and refrigerating of the predecessor of fluocarbon or its reactive kinds, in the result of which from the predecessor of fluocarbon or its reactive kinds forms at least one more desirable fluocarbon compound. The technical result is conversion of the fluocarbon raw into the useful products by the low-cost reliable non-polluting environment universal and easily controlled method.
EFFECT: the invention ensures conversion of the fluocarbon raw into the useful products by the low-cost reliable non-polluting environment universal and easily controlled method.
12 cl, 10 dwg, 3 tbl, 2 ex
FIELD: heat engineering, applicable in heat exchanging apparatus with recuperative heat transfer in various branches of industry.
SUBSTANCE: the heat exchanger has a body with pipe-branches for feeding and discharging the working media and ducts for the heat transfer agents formed by the ribs adjoining the body shell, the body is made in the form of a cylindrical shell enclosing the heat exchange surface made as a double screw thread with formation of two screw ducts of the same section separated by a wall serving as a rib of the heat exchange surface, feed and removal of heat-transfer agents are accomplished by means of manifolds, in which partitions are installed for separation of the flows of heat-transfer agents, besides, the roughness of the heat exchange surface makes it possible to use viscous heat-transfer agents, and at feeding of heat-transfer agents to the screw ducts separation of the heat-transfer agents is not required.
EFFECT: enhanced operating reliability and intensification of heat exchange.
SUBSTANCE: apparatus can be used in steam and liquid cooling systems. The heat exchange apparatus consists of external and internal pipes, installed at an angle of 0-85° to the horizontal and arranged concentrically relative each other, each of which is equipped with sockets for input and output of the heat carrier. The internal pipe is divided into sections, made with the provision for interconnection of the sections through overflow openings, made in the form of segmented apertures in the intersection partition walls, installed with alternation of these openings upwards and downwards, and made in the form of segmented diaphragm. The segmented openings are formed in the space between the wall of the internal pipe and the diaphragm, and the overflow thresholds of the partition walls are parallel to each other and relative the horizontal.
EFFECT: simple structure.
SUBSTANCE: invention relates to "pipe-in-pipe"-type heat exchangers and can be used in various industrial branches. The proposed heat exchanger comprises an inner pipe with external cylindrical ribs representing hollow pipes and turbulator mounted thereon and representing a helical tape coiled on the rod, a tangential branch pipe to feed intertubular medium and that to discharge aforesaid medium. Note here that straight cylindrical ribs, arranged all long the heat exchanger length, are fitted on the inner pipe outer surface with the help of bent metal plates and brought out into common branch pipes of feeding and discharging inner pipe medium via tube plates.
EFFECT: simplified mounting/dismantling, intensified heat exchange, reduced costs of clearing pipes.
FIELD: heat-and-mass transfer.
SUBSTANCE: invention relates to devices designed to cool fluids and distributor thereof, as well as to methods of clearing and sterilising such apparatuses. Proposed device comprises primary heat exchanger, secondary heat exchanger, 1st pipeline for fluid to be cooled to circulate therein. It comprises heat carrier to transfer cooling power to fluid to be cooled that circulates in the 1st pipeline. Note here that aforesaid primary and secondary heat exchangers are arranged, at least, partially, one into another. Note also that primary heat exchanger comprises the 2nd pipeline that passes together with secondary heat exchanger 1st pipeline and around it and along, at least, a portion of the length of aforesaid pipeline. The proposed device additionally comprises fluid source and, at least, one distributor valve. Note here that the said distributor incorporates a cooler implemented in compliance with one of the described versions. Proposed method of sterilising cooled fluid comprises the steps that follows, i.e. draining fluid from the chamber with primary heat exchanger heat carrier, or draining fluid from the 2nd pipeline carrying primary heat exchanger hear carrier, draining fluid from the 1st pipeline that carries fluid to be cooled and distributed, sterilising the 1st pipeline during the period sufficient for killing bacteria and sterilising.
EFFECT: higher efficiency and simpler servicing.
53 cl, 4 dwg