Temperature and pressure reduction stable heat supply device

Abstract

The utility model relates to the technical field of waste heat recovery of thermal power plants, in particular to a temperature and pressure reducing stable heat supply device which comprises two pressure reducing valves, an air supply pipe is communicated between the two pressure reducing valves, one end, away from the pressure reducing valves, of the air supply pipe is communicated with a cooling box, and a cooling water tank is installed on one side of the top end of the outer wall of the cooling box. A pressure reducing valve is arranged at the right end of the pressure reducing valve, a temperature reducing component for reducing the temperature of steam is arranged in the temperature reducing box, and the right end of the temperature reducing box is communicated with a condenser through a pipeline. The steam subjected to pressure reduction can be conveyed into the snakelike heat exchange pipe through the air conveying pipe, the snakelike heat exchange pipe can conduct heat exchange on the steam and cooling water mist, the steam subjected to heat exchange can be secondarily mixed with water mist in the mixing tank, the temperature of the steam is reduced to the proper temperature, and follow-up personnel can recycle the steam conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery in thermal power plants, and in particular to a stable heating device capable of reducing temperature and pressure. Background Art

[0002] When a thermal power plant uses high-temperature and high-pressure steam to spin a generator to generate electricity, the steam after swirling is not effectively utilized, resulting in a large amount of steam waste heat being wasted. The utilization of steam waste heat can save energy and reduce production costs. Since the temperature and pressure of the steam after swirling are relatively high, users cannot use it directly without cooling and reducing the pressure. Existing thermal power plants mostly use condensers to cool and reduce the pressure of steam, but this method has limited effect and is not convenient for recycling the heat released by the steam during the cooling process. Therefore, there are certain shortcomings.

[0003] In summary, it is necessary to invent a stable heating device that can reduce temperature and pressure. Utility Model Content

[0004] To this end, the utility model provides a stable heating device with temperature and pressure reduction to solve the problem that existing thermal power plants mostly cool down and reduce the pressure of steam through condensers, but this method has limited effect and is not convenient for recycling the heat released by the steam during the cooling process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stable heating device for reducing temperature and pressure, comprising a pressure reducing valve, an air supply pipe is connected between two of the pressure reducing valves, an end of the air supply pipe away from the pressure reducing valve is connected to a cooling box, a cooling water tank is installed on one side of the top end of the outer wall of the cooling box, a cooling component for cooling steam is arranged in the cooling box, and the right end of the cooling box is connected to a condenser through a pipeline.

[0006] Preferably, an insulating partition is fixed at the center of the inner wall of the cooling box, and the cooling component includes a serpentine heat exchange tube, one end of the serpentine heat exchange tube is connected to the air supply end of the air supply pipe, and the bottom end of the serpentine heat exchange tube is connected to the bottom of the right outer wall of the insulating partition.

[0007] Preferably, a water supply pipe is provided on the left side of the cooling water tank, and the bottom end of the water supply pipe is connected to the top of the inner wall of the cooling box and is located on the left side of the insulating partition. The serpentine heat exchange tube includes an outer tube, and a central inner tube is provided at the inner center of the outer tube.

[0008] Preferably, an outer edge tube is fixed between the outer wall of the central inner tube and the inner wall of the outer tube, and a plurality of the outer edge tubes are evenly arranged in a circular array.

[0009] Preferably, the cooling component also includes a mixing tank, and brackets are fixed on the upper and lower sides of both ends of the outer wall of the mixing tank, and the other ends of the brackets are fixedly connected to the upper and lower sides of the inner wall of the cooling box. An annular groove is opened on the inner wall of the mixing tank, and the bottom end of the outer wall of the cooling water tank is connected to a drain pipe, and the end of the drain pipe away from the cooling water tank is connected to the inside of the annular groove.

[0010] Preferably, a connecting pipe is provided on the left side of the inner wall of the mixing tank, the bottom end of the connecting pipe is connected to the serpentine heat exchange tube at the connection with the insulation baffle, and the right end of the connecting pipe passes through the left side of the inner wall of the mixing tank and is fixed with a gas distribution plate.

[0011] Preferably, partition plates are fixed to the side ends of the inner walls of the mixing tank, and the four partition plates are evenly arranged in a circular array. The side ends of the inner walls of the gas distribution plates are fixedly connected to gas distribution pipes, and the ends of the gas distribution pipes away from the gas distribution plates pass through the partition plates and are fixed to the outer walls of the partition plates.

[0012] Preferably, the inner wall of the annular groove and the positions corresponding to the partition plate are fixedly connected with atomizing nozzles, and the four atomizing nozzles are evenly arranged in a circular array.

[0013] The beneficial effects of the utility model are:

[0014] In the utility model, the high-temperature and high-pressure steam is first transported to the pressure reducing valve through the air supply pipe, so that the pressure reducing valve can reduce the pressure of the steam first, and the steam after the pressure reduction can be transported to the serpentine heat exchange tube through the air supply pipe, and the serpentine heat exchange tube can first exchange heat between the steam and cooling water, and the steam after the heat exchange will be mixed with water mist for a second time in the mixing tank, so that the temperature of the steam is reduced to a suitable temperature, which is convenient for subsequent personnel to recycle and utilize. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model in the front view direction;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the cooling box in the utility model in the front view direction;

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the serpentine heat exchange tube in the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the mixing tank in the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the gas distribution plate in the utility model.

[0020] In the figure: 100, pressure reducing valve; 110, air supply pipe; 200, cooling box; 210, insulation baffle; 300, cooling water tank; 310, drain pipe; 400, serpentine heat exchange tube; 410, central inner tube; 420, outer edge tube; 500, mixing tank; 510, connecting pipe; 520, gas distribution plate; 521, gas distribution pipe; 530, annular groove; 531, atomizing nozzle; 532, partition plate; 600, condenser. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] See attached Figure 1-5 The utility model provides a stable heating device with temperature reduction and pressure reduction, including a pressure reducing valve 100, an air supply pipe 110 is connected between two pressure reducing valves 100, and the two pressure reducing valves 100 are arranged to reduce the pressure and temperature of the steam passing through, and the end of the air supply pipe 110 away from the pressure reducing valve 100 is connected to a cooling box 200, and a cooling water tank 300 is installed on one side of the top end of the outer wall of the cooling box 200, and the cooling water tank 300 is arranged to store cooling water. The cooling box 200 is provided with a cooling component for cooling the steam. An insulating baffle 210 is fixed at the center of the inner wall of the cooling box 200. The cooling component includes a serpentine heat exchange tube 400. One end of the serpentine heat exchange tube 400 is connected to the air supply end of the air supply pipe 110. The bottom end of the serpentine heat exchange tube 400 is connected to the bottom of the right outer wall of the insulating baffle 210. A water supply pipe is provided on the left side of the cooling water tank 300. The bottom ends of the water supply pipes are connected to the top of the inner wall of the cooling box 200 and are located at the insulating baffle 210. The left side of the heat baffle 210 is connected, and the cooling water tank 300 is provided to inject the cooling water into the cooling box 200 through the water supply pipe, and the inner wall of the cooling box 200 is provided with a temperature sensor for monitoring the water temperature, and the serpentine heat exchange tube 400 is provided to exchange heat between steam and cooling water, so that the temperature of the cooling water increases, while the temperature of the steam decreases, and after the temperature of the cooling water increases to a certain temperature, the bottom of the cooling box 200 can be provided with a discharge pipe to discharge the heated water, so that personnel can get hot water for use, and the serpentine heat exchange tube 400 includes an outer tube, and a central inner tube 410 is provided at the inner center of the outer tube, and an outer edge tube 420 is fixed between the outer wall of the central inner tube 410 and the inner wall of the outer tube, and the multiple outer edge tubes 420 are evenly arranged in a circular array, and the central inner tube 410 and the outer edge tube 420 are provided to separate the steam, so as to improve the heat exchange and cooling effect between steam and water;

[0023] The cooling component also includes a mixing tank 500. Brackets are fixed to the upper and lower sides of both ends of the outer wall of the mixing tank 500. The other ends of the brackets are fixedly connected to the upper and lower sides of the inner wall of the cooling box 200. An annular groove 530 is opened on the inner wall of the mixing tank 500. The bottom end of the outer wall of the cooling water tank 300 is connected to a drain pipe 310. The end of the drain pipe 310 away from the cooling water tank 300 is connected to the inside of the annular groove 530. The cooling water tank 300 can drain the cooling water through the drain pipe 310. 0 is transported to the annular groove 530. A connecting pipe 510 is arranged on the left side of the inner wall of the mixing tank 500. The bottom end of the connecting pipe 510 is connected to the serpentine heat exchange pipe 400 at the connection with the insulation baffle 210. The steam after heat exchange will enter the mixing tank 500 through the connecting pipe 510. The right end of the connecting pipe 510 passes through the left side of the inner wall of the mixing tank 500 and is fixed with a gas distribution plate 520. The side ends of the inner wall of the mixing tank 500 are all fixed with partition plates 532. The four partition plates 532 are fixed with a gas distribution plate 520. 32 are all evenly arranged in a circular array, the partition plate 532 is set to separate the space inside the mixing tank 500, and the gas distribution plate 520 can transport steam to the four spaces separated by the partition plate 532 through the gas distribution pipe 521, and the annular groove 530 can spray the steam into atomized form through the atomizing nozzle 531 to mix with the separated steam, so as to reduce the temperature of the steam, and the steam can be separated and mixed with the water mist through the partition plate 532 to ensure the mixing effect of the steam and the water mist, and at the same time make the steam cooling effect better, the inner wall side end of the gas distribution plate 520 is fixedly connected with the gas distribution pipe 521, and the end of the gas distribution pipe 521 away from the gas distribution plate 520 passes through the partition plate 532 and is fixed to the outer wall of the partition plate 532, the inner wall of the annular groove 530 and the corresponding position of the partition plate 532 are fixedly connected with the atomizing nozzle 531, and the four atomizing nozzles 531 are evenly arranged in a circular array;

[0024] The right end of the cooling box 200 is connected to the condenser 600 through a pipeline.

[0025] The use process of the utility model is as follows: first, the high-temperature and high-pressure steam generated by the steam turbine will be transported to the two pressure reducing valves 100 through the air supply pipe 110, and the two pressure reducing valves 100 can first reduce the pressure of the high-pressure steam, so that the pressure of the steam is reduced to an appropriate value, and the high-temperature steam after the pressure reduction will enter the serpentine heat exchange tube 400 through the pressure reducing valve 100 and flow in the serpentine heat exchange tube 400, and the cooling water tank 300 will transport cooling water to the left side of the interior of the cooling box 200 through the water supply pipe, and the serpentine heat exchange tube 400 will exchange heat with the cooling water, so that the steam temperature is reduced, while the temperature of the cooling water can be increased, and the temperature of the cooling water can be detected by the built-in temperature sensor. When the temperature of the cooling water reaches a certain level, the high-temperature water can be discharged through the discharge pipe, so that the personnel can get hot water;

[0026] The serpentine heat exchange tube 400 will transport the cooled steam to the gas distributor 520 through the connecting tube 510, so that the gas distributor 520 can transport the steam to the outside of the partition plate 532 through the gas distributor pipe 521, and then the cooling water tank 300 will transport the cooling water to the annular groove 530 through the drain pipe 310, and the annular groove 530 will atomize the water and spray it out through the atomizing nozzle 531, so that the steam and the atomized water are mixed, and the temperature of the steam can be further reduced. The reduced steam can be transported to the condenser 600 through the pipeline for subsequent recycling, and the recovered cooling water will flow back to the cooling water tank 300 through the pipeline for reuse.

[0027] The above is only a preferred embodiment of the utility model. Any person skilled in the art may modify the utility model by using the above technical solution or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the utility model shall fall within the scope of protection claimed by the utility model.

Claims

1. A stable heating device for reducing temperature and pressure, comprising a pressure reducing valve (100), an air supply pipe (110) being connected between two pressure reducing valves (100), and an end of the air supply pipe (110) away from the pressure reducing valve (100) being connected to a temperature reduction box (200), characterized in that: A cooling water tank (300) is installed on one side of the top end of the outer wall of the cooling box (200). A cooling component for cooling steam is arranged inside the cooling box (200). The right end of the cooling box (200) is connected to a condenser (600) via a pipeline.

2. A stable heating device with reduced temperature and pressure according to claim 1, characterized in that: An insulating baffle (210) is fixed at the center of the inner wall of the cooling box (200), and the cooling component includes a serpentine heat exchange tube (400), one end of the serpentine heat exchange tube (400) is connected to the air supply end of the air supply pipe (110), and the bottom end of the serpentine heat exchange tube (400) is connected to the bottom of the right outer wall of the insulating baffle (210).

3. A stable heating device with reduced temperature and pressure according to claim 2, characterized in that: A water supply pipe is arranged on the left side of the cooling water tank (300), and the bottom end of the water supply pipe is connected to the top of the inner wall of the cooling box (200) and is located on the left side of the insulation partition (210). The serpentine heat exchange tube (400) includes an outer tube, and a central inner tube (410) is arranged at the inner center of the outer tube.

4. A stable heating device with reduced temperature and pressure according to claim 3, characterized in that: An outer edge tube (420) is fixed between the outer wall of the central inner tube (410) and the inner wall of the outer tube, and a plurality of the outer edge tubes (420) are evenly arranged in a circular array.

5. A stable heating device with reduced temperature and pressure according to claim 2, characterized in that: The cooling component also includes a mixing tank (500), wherein brackets are fixed to the upper and lower sides of both ends of the outer wall of the mixing tank (500), and the other ends of the brackets are fixedly connected to the upper and lower sides of the inner wall of the cooling box (200). An annular groove (530) is provided on the inner wall of the mixing tank (500), and a drain pipe (310) is connected to the bottom end of the outer wall of the cooling water tank (300), and one end of the drain pipe (310) away from the cooling water tank (300) is connected to the inside of the annular groove (530).

6. A stable heating device with reduced temperature and pressure according to claim 5, characterized in that: A connecting pipe (510) is provided on the left side of the inner wall of the mixing tank (500), and the bottom end of the connecting pipe (510) is connected to the serpentine heat exchange tube (400) at the connection with the insulation baffle (210). The right end of the connecting pipe (510) passes through the left side of the inner wall of the mixing tank (500) and is fixed with a gas distribution plate (520).

7. A stable heating device with reduced temperature and pressure according to claim 6, characterized in that: The side ends of the inner walls of the mixing tank (500) are all fixed with partition plates (532), and the four partition plates (532) are evenly arranged in a circular array. The side ends of the inner walls of the gas distribution plate (520) are all fixedly connected with gas distribution pipes (521), and the ends of the gas distribution pipes (521) away from the gas distribution plate (520) pass through the partition plates (532) and are fixed to the outer walls of the partition plates (532).

8. A stable heating device with reduced temperature and pressure according to claim 7, characterized in that: The inner wall of the annular groove (530) and the positions corresponding to the partition plate (532) are fixedly connected with atomizing nozzles (531), and the four atomizing nozzles (531) are evenly arranged in an annular array.

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