CN206377895U - Vertical direct contact condensed cold heat exchanger - Google Patents

Abstract

The utility model discloses a vertical direct contact condensation subcooling heat exchanger. The bottom of the partition baffle of the utility model is provided with a rectangular through hole that communicates with the inner space of the cylinder on both sides, and the four edges are respectively in contact with the upper tube plate, the lower tube plate, and the inner walls of the axial side walls on both sides of the cylinder and are connected by welding; The sealing plate is rectangular, and the upper tube plate is provided with a plurality of through holes on one side of the separating sealing plate, which is inserted into one end of the heat exchange tube and welded, and the upper tube plate is drilled with multiple small holes on the other side of the separating sealing plate. The outer circle of the upper tube plate is welded to the inner wall of the cylinder; the lower tube plate is circular, and there are multiple through holes on one side of the partition baffle, which are inserted into one end of the heat exchange tube and welded. The circle is welded to the inner wall of the cylinder. The utility model can effectively reduce the exhaust temperature of the refrigeration compressor, reduce the pressure ratio, improve the performance of the refrigeration system, and has the advantages of simple structure, convenient operation, environmental protection and energy saving.

Description

Vertical direct contact condensing subcooling heat exchanger

technical field

The utility model relates to the technical field of refrigeration, in particular to a vertical direct contact condensation subcooling heat exchanger.

Background technique

The high-temperature and high-pressure gas discharged from the refrigeration compressor in the refrigeration system takes away the heat through the water cooling medium and cools down to condense into a high-temperature and high-pressure liquid. The refrigerant dissipates heat to the cooling water through the convective heat transfer of the fluid on both sides and the heat transfer wall of the heat exchanger. The heat conduction, especially the thermal resistance formed by the heat transfer wall itself of the heat exchanger and the lubricating oil and dirt accumulated on the wall, causes the heat transfer coefficient to decrease, and the heat transfer temperature difference between the refrigerant and the cooling medium required to dissipate the same heat increases , leading to an increase in the exhaust pressure of the refrigeration compressor, an increase in the pressure ratio, a decrease in volumetric efficiency, an increase in the power consumption of the refrigeration compressor, and a decrease in the performance coefficient of the refrigeration system. Increase the refrigerating capacity of the evaporator, and correspondingly improve the performance of the refrigeration system. Therefore, develop a heat exchanger that directly contacts the condensation zone subcooling, reduce the exhaust temperature of the refrigeration compressor, reduce the pressure ratio, increase the volumetric efficiency, and reduce the temperature of the refrigeration compressor. The power consumption is reduced, the cooling capacity is increased, the performance of the refrigeration system is improved, and energy saving and environmental protection are realized. But there is no embodiment at present.

Utility model content

The purpose of this utility model is to provide a vertical direct contact condensation subcooling heat exchanger to improve the operation performance of the refrigeration system in view of the technical defects existing in the existing refrigeration system.

The technical scheme adopted for realizing the purpose of this utility model is:

A vertical direct contact condensing subcooling heat exchanger, including a first high-temperature gas cut-off valve, an upper tube plate, a partition sealing plate, a cover, a liquid supply pipe, a second high-temperature gas stop valve, a liquid supply pump, and a lower tube plate , orifice, separation baffle, bracket, subcooled liquid stop valve, cylinder, heat exchange tube, condensate stop valve and liquid supply stop valve.

The cylinder body is cylindrical, the partition baffle is rectangular, and the bottom is provided with a rectangular through hole connecting the inner space of the shells on both sides. Contact and weld connection to the inner wall of the side wall; the partition sealing plate is rectangular, the upper tube plate is circular, and the end that is in contact with the partition sealing plate is welded and connected, and the upper tube plate is provided with multiple through holes on one side of the partition One end of the heat exchange tube is welded and connected, and the upper tube plate is drilled with a number of small holes on the other side of the partition sealing plate, and the outer circle of the upper tube plate is welded to the inner wall of the cylinder; One side of the baffle is provided with a plurality of through holes, which are inserted into one end of the heat exchange tube and welded, and the outer circle of the lower tube plate is welded to the inner wall of the cylinder.

On the side of the partition baffle of the cylinder, the end close to the upper tube plate is provided with an orifice welded with the parallel outlet connecting pipe of the first high-temperature gas stop valve and the condensate stop valve, and the end close to the lower tube plate is provided with a The welded orifice of the connecting pipe of the supercooled liquid shut-off valve is separated from the other side of the baffle, and the end close to the lower tube plate is provided with a welded orifice with the connecting pipe of the second high-temperature gas shut-off valve at a lower position. , Closer to the lower tube plate is provided with an orifice welded with the liquid supply pipe, the cover is respectively welded with the separation seal plate and the edge of the cylinder body, and the cylinder body between the separation seal plate and the cover is provided with a connection with the supply pipe Orifice for liquid pipe welding.

The inlets of the first high-temperature gas shut-off valve and the second high-temperature gas shut-off valve are welded to the exhaust pipe of the refrigeration compressor, the supercooled liquid shut-off valve is welded to the inlet pipe of the throttling and pressure-reducing element, and the condensate shut-off valve The inlet is welded to the outlet of the liquid supply shut-off valve.

The inlet and outlet of the liquid supply pump are respectively welded to two sections of liquid supply pipes.

There are four supports, which are evenly distributed on the lower end of the cylinder, one end is welded to the outer wall of the cylinder, and the other end is fixed on the upper shelf of the pool or water tank.

The outlet end of the cooling water pipe is placed in the open space between the upper tube plate on the upper part of the cylinder and the partition sealing plate.

A liquid level float valve, a first high temperature gas stop valve, a second high temperature gas stop valve, a liquid supply pump, a supercooled liquid stop valve, and a condensate stop valve are installed in the space between the separation baffle and the cylinder without heat exchange tubes. The opening and closing of the valve and the liquid supply cut-off valve are controlled by the liquid level float valve.

Compared with the prior art, the beneficial effects of the utility model are:

1. The vertical direct contact condensation supercooling heat exchanger of this utility model integrates direct contact condensation and supercooling, and uses high temperature and high pressure refrigerant gas to directly contact the liquid to release heat and condense, which can effectively reduce the exhaust of the refrigeration compressor temperature, reduce the pressure ratio, increase the volumetric efficiency, reduce the power consumption of the refrigeration compressor, and improve the performance of the refrigeration system.

2. The vertical direct contact condensing subcooling heat exchanger of this utility model realizes supercooling of high temperature and high pressure liquid before throttling and stepping down, so that the enthalpy value entering the evaporator is reduced, the cooling capacity of the refrigeration system is increased, and the efficiency of the refrigeration system is further improved. High performance, simple structure, convenient operation, environmental protection and energy saving.

Description of drawings

Fig. 1 is a schematic diagram of a vertical direct contact condensation subcooling heat exchanger of the present invention.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

The schematic diagram of the vertical direct contact condensation subcooling heat exchanger of the present invention is shown in Figure 1, including the first high-temperature gas cut-off valve 1, the upper tube plate 2, the separation sealing plate 3, the sealing cover 4, the liquid supply pipe 5, the second 2. High temperature gas shut-off valve 6, liquid supply pump 7, lower tube plate 8, orifice 9, partition baffle 10, bracket 11, supercooled liquid shut-off valve 12, cylinder 13, heat exchange tube 14, condensate shut-off valve 15 And liquid supply cut-off valve 16.

The cylinder body 13 is cylindrical, the partition baffle 10 is rectangular, the upper tube plate 2 is circular, and the lower tube plate 8 is circular, and the outer circumferences of the upper tube plate 2 and the lower tube plate 8 are respectively in contact with The wall is fixed, the partition baffle is placed in the cylinder along the axis of the cylinder, the upper end surface and the lower end surface of the partition baffle are respectively fixed with the upper tube sheet and the lower tube sheet, and the bottom of the partition baffle is provided with a rectangle connecting the internal space of the cylinder on both sides. The orifice 9 and the partition baffle are in contact with the upper tube sheet, the lower tube sheet and the inner wall of the cylinder respectively and welded; the partition sealing plate 3 is rectangular, and the partition sealing plate 3 is fixed on the upper tube The baffles are on the same vertical plane, and the upper tube plate 2 is provided with a plurality of through holes on one side of the separating sealing plate 3, through which one end of the heat exchange tube 14 is inserted and welded, and the upper tube plate 2 is on the other side of the separating sealing plate 3. There are many small holes drilled on one side; the other ends of the heat exchange tubes are respectively inserted into the lower tube plate and connected by welding.

The cylinder body 13 is placed on one side of the outer wall of the heat exchange tube, and one end close to the upper tube sheet 2 is provided with an orifice welded with the parallel outlet connecting pipe of the first high-temperature gas stop valve 1 and the condensate stop valve 15, and close to the lower tube One end of the plate 8 is provided with an orifice welded with the connecting pipe of the supercooled liquid shut-off valve 12, and the lower part of the outer wall on the other side of the cylinder body 13 is provided with an orifice welded with the connecting pipe of the second high-temperature gas shut-off valve 6, which is connected with the second high-temperature gas shut-off valve 6. The outer wall of the cylinder below the welded orifice of the connecting pipe of the gas stop valve 6 is provided with an orifice welded with the liquid supply pipe 5, and the cover 4 is welded to the edge of the separation sealing plate 3 and the cylinder body 13 respectively. The side wall of the cylinder body 13 between the plate 3 and the cover 4 is provided with an orifice welded with the liquid supply pipe 5 , and the liquid supply pipe 5 is provided with a liquid supply stop valve 16 .

The inlets of the first high-temperature gas shut-off valve 1 and the second high-temperature gas shut-off valve 6 are welded to the exhaust pipe of the refrigeration compressor, and the supercooled liquid shut-off valve 12 is welded to the inlet pipe of the throttling and pressure-reducing element. The inlet of the shut-off valve 15 is welded to the outlet of the liquid supply shut-off valve 16 .

The inlet and outlet of the liquid supply pump 7 are respectively welded to the two sections of liquid supply pipes 5 .

There are four supports 11, which are evenly distributed on the lower end of the cylindrical body 13, one end is welded to the outer wall of the cylindrical body 13, and the other end is fixed on the upper shelf of the pool or water tank.

One end of the outlet of the cooling water pipe is placed in the open space between the upper tube plate 2 and the partition sealing plate 3 on the upper part of the cylinder body 13 .

The space between the separating baffle plate 10 and the cylinder body 13 without heat exchange tubes is provided with a liquid level float valve, a first high temperature gas shut-off valve 1, a second high temperature gas shut-off valve 6, a liquid supply pump 7, and a supercooled liquid shut-off valve. Valve 12, condensate stop valve 15 and liquid supply stop valve 16 are opened and closed by liquid level float valves.

During assembly, the lower tube plate 8 is welded inside the cylinder body 13, the partition baffle 10 is welded with the cylinder body 13 and the lower tube plate 8 respectively, and the upper tube plate 2 is welded with the partition baffle 10, the cylinder body 13 and the partition sealing plate 3 respectively, The heat exchange tube holes of the upper tube plate 2 and the lower tube plate 8 are welded through the heat exchange tube 14, and the cover 4 is respectively welded to the edge of the separation seal plate 3 and the cylinder body 13, and welded at the corresponding opening positions Each takes over and welds the bracket 11.

When the refrigeration system starts to operate, the high-temperature and high-pressure refrigerant gas discharged from the refrigeration compressor enters the cylinder body 13, the heat exchange tube 14 and the space between the partition baffle 10 through the oil separator, the first high-temperature gas shut-off valve 1, and is connected with the inside of the heat exchange tube. The cooling water in the cooling water performs heat exchange and releases heat. The condensed high-temperature and high-pressure liquid volume exists in the lower space, and enters the space on the other side through the orifice 9 at the bottom of the partition baffle 10. When the liquid level reaches the set level, the first high-temperature The gas shut-off valve 1 is closed, the second high-temperature gas shut-off valve 6, the liquid supply pump 7, the subcooled liquid shut-off valve 12, the condensate liquid shut-off valve 15 and the liquid supply shut-off valve 16 are opened, and the liquid is pushed by the liquid supply pump 7 into the sealing The cover 4, separates the space between the sealing plate 3, the cylinder body 13 and the upper tube plate 2, and sprays and drops into the upper tube plate 2, the cylinder body 13, the partition baffle plate 10 and the lower tube plate 8 through the small holes of the upper tube plate 2 The high-temperature and high-pressure refrigerant gas discharged from the refrigeration compressor enters the upper tube plate 2, the cylinder body 13, and the space separating the baffle plate 10 and the lower tube plate 8 through the oil separator and the second high-temperature gas stop valve 6. The dripping liquid is heat-exchanged, and the heat released is condensed into a liquid, which enters the cylinder body 13, the heat exchange tube 14 and the space between the partition baffle 10 through the liquid supply stop valve 16 and the condensate stop valve 15, and is heated with the cooling water in the heat exchange tube. Heat exchange, the heat released is supercooled, part of the supercooled liquid enters the space on the other side through the orifice 9 at the bottom of the partition baffle 10, and part of it enters the throttling and pressure-reducing element through the cold liquid stop valve 12 to provide low temperature and low pressure for the evaporator The refrigerant liquid, the cooling water cooled by the cooling water tower enters the heat exchange tube from the open space between the upper tube plate 2 and the partition sealing plate 3 on the upper part of the cylinder 13, absorbs the heat released by the refrigerant, and then flows into the lower pool or water tank middle.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (3)

1. a kind of vertical direct contact condensed cold heat exchanger, including the first high-temperature gas stop valve, upper perforated plate, separate shrouding, Capping, feed pipe, the second high-temperature gas stop valve, lower perforated plate, aperture, separation baffles, supercooled liquid stop valve, cylinder, heat exchanger tube, Condensation water stop valve and cutoff；The cylinder is cylindrical shape, and separation baffles are rectangle, and upper perforated plate is circle, down tube Plate is circular, and the circumferential periphery of upper perforated plate and lower perforated plate is fixed with cylinder inboard wall respectively, and separation baffles are put in cylinder along tubular axis In vivo, the upper surface and lower surface of separation baffles are fixed with upper perforated plate and lower perforated plate respectively, and separation baffles bottom is provided with a UNICOM The rectangular apertures in both sides inner barrel space, separation baffles are contacted and the company of welding with upper perforated plate, lower perforated plate and cylinder inboard wall respectively Connect；Separation shrouding is rectangle, separates shrouding and is fixed on upper perforated plate, separates shrouding with separation baffles in same perpendicular, Upper perforated plate is provided with multiple through holes in the side for separating shrouding, inserts one end of heat exchanger tube and is welded to connect, and upper perforated plate is separating envelope The opposite side of plate is drilled with multiple apertures；The other end of heat exchanger tube inserts lower perforated plate and is welded to connect respectively,

The cylinder places the side outer wall of heat exchanger tube, and one end adjacent with upper perforated plate is offered ends with the first high-temperature gas Valve, the aperture of the outlet connecting pipe in parallel welding of condensation water stop valve, one end adjacent with lower perforated plate is offered to be cut with supercooled liquid The aperture that only valve connecting tube is welded, cylinder opposite side outer wall bottom offers the connecting tube welding with the second high-temperature gas stop valve Aperture, the cylinder body outer wall below aperture welded with the connecting tube of the second high-temperature gas stop valve is offered and feed pipe is exported The aperture of welding, edge of the capping respectively with separation shrouding, cylinder is welded to connect, and separates the cylinder between shrouding and capping Side wall offers the aperture welded with feed flow tube inlet, and feed pipe sets cutoff.

2. vertical direct contact according to claim 1 condensed cold heat exchanger, it is characterised in that the solution feed pump enters Outlet is welded to connect with feed pipe respectively；Support has four, is distributed on the bottom of cylinder, the outer wall welding of support one end and cylinder Connection, the support other end is fixed on pond or water tank restocking；The upper perforated plate on the cylinder top, separate unlimited sky between shrouding Between place cooling water pipe exit end.

3. it is according to claim 1 it is vertical it is direct contact condensed cold heat exchanger, it is characterised in that the separation baffles with Cylinder does not set and liquid-level floater valve is provided with the space of heat exchanger tube, the first high-temperature gas stop valve, the second high-temperature gas stop valve, confession Liquid pump, supercooled liquid stop valve, condensation water stop valve and cutoff are controlled to open and close by liquid-level floater valve.