Oil-salt heat exchanger for trough type photo-thermal power station

Abstract

The utility model relates to the technical field of oil-salt heat exchangers, in particular to an oil-salt heat exchanger for a trough type photo-thermal power station, which comprises a shell, a partition plate is fixedly connected to one end of the inner wall of the shell, a first circular plate is fixedly connected to one end of the partition plate, and the outer wall of the first circular plate is fixedly connected with one side of the inner wall of the shell. And the inner wall of one side of the circular plate I is fixedly connected with one side of the outer wall of the pipeline. Through cooperation of a shell, a heat conduction oil injection pipe, a square box and a filtering structure, when the device is used, a cover plate can be inserted into the inner wall of the square box, then a filtering net is located in the square box, a clamping plate is rotated to rotate to the upper portion, a first spring drives a vertical block to move rightwards, and the vertical block drives the clamping plate to move rightwards; and the convex blocks of the cover plate are inserted into the inner walls of the grooves of the clamping plates, and the clamping plates clamp the cover plate, so that the conduction oil is conveniently filtered, impurities are prevented from entering the pipeline to cause pipeline blockage, and the heat exchange work is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-salt heat exchangers, and particularly relates to an oil-salt heat exchanger for a trough solar thermal power station. Background Technique

[0002] Trough solar thermal power generation technology is one of the relatively mature solar thermal power generation technology schools. It uses trough-shaped concentrating mirrors to concentrate sunlight on the heat collection pipes. After the heat-conducting oil in the heat collection pipes absorbs heat, a part of it enters the evaporation system to exchange heat with water to generate steam meeting the requirements of the steam turbine. Another part of the heat-conducting oil exchanges heat with molten salt. After the molten salt is heated, it is stored in a high-temperature molten salt tank. At night or in other cases with poor light, the high-temperature molten salt exchanges heat with the low-temperature heat-conducting oil. After the heat-conducting oil is heated, it enters the evaporation system, and the molten salt after heat exchange enters the low-temperature tank. The molten salt tank and the oil-salt heat exchanger, etc. constitute the heat storage system. The heat storage system solves the problem of the incoordination brought by the fluctuation of sunlight to the power plant and realizes continuous power generation. The oil-salt heat exchanger plays an important role in realizing the storage and utilization of thermal energy in the trough solar thermal power generation system.

[0003] There is a prior oil-salt heat exchanger for a trough solar thermal power station (application number: 201920139108.7) that can increase the number of pipes arranged and reduce the local pressure loss at the inlet and outlet, saving costs. However, the above still has the following problems. In a trough solar thermal power station, an oil-salt heat exchanger is often used. The heat-conducting oil flows in the pipeline, and at the same time, molten salt is injected into the shell body, thereby realizing the heat exchange work between the heat-conducting oil and the molten salt. Since the heat-conducting oil flows in the pipeline, it is not convenient to filter the heat-conducting oil, which is likely to cause impurities to enter the pipeline and block the pipeline, thereby affecting the progress of the heat exchange work. Moreover, after the molten salt is injected into the shell body, the molten salt will be discharged from the discharge port on one side of the bottom of the shell body. It is not convenient to gather the molten salt towards the discharge port position, which is likely to cause residue when the molten salt is discharged. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages in the prior art that it is not convenient to filter the heat-conducting oil, which is likely to cause impurities to enter the pipeline and block the pipeline, thereby affecting the progress of the heat exchange work, and it is not convenient to gather the molten salt towards the discharge port position, which is likely to cause residue when the molten salt is discharged, and to propose an oil-salt heat exchanger for a trough solar thermal power station.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] Design an oil-salt heat exchanger for a trough solar thermal power station, including a housing. One end of the inner wall of the housing is fixedly connected with a partition board. One end of the partition board is fixedly connected with a first circular plate. The outer wall of the first circular plate is fixedly connected with one side of the inner wall of the housing. One side inner wall of the first circular plate is fixedly connected with the outer wall of a pipeline. The other side of the outer wall of the pipeline is fixedly connected with a second circular plate. The outer wall of the second circular plate is fixedly connected with the other side of the inner wall of the housing. One side inner wall of the top of the housing is fixedly connected with a heat transfer oil injection pipe. One side inner wall of the bottom of the housing is fixedly connected with a heat transfer oil discharge pipe. One side inner wall of the top of the housing is fixedly connected with a molten salt injection pipe. The other side inner wall of the bottom of the housing is fixedly connected with a molten salt discharge pipe. Above the outer wall of the heat transfer oil injection pipe is fixedly connected with a square box, and a filtering structure is arranged on one side of the square box.

[0007] Preferably, the filtering structure includes a cover plate. One side of the outer wall of the cover plate is in clearance fit with one end inner wall of the square box. One end of the cover plate is fixedly connected with a filter screen. The bottom side of the filter screen is in contact with a convex block at one end of the inner wall of the square box. A clamping plate is in clearance fit with a convex block at one end of the cover plate. One side below the clamping plate is rotatably connected with a vertical block through a bearing. The upper part of the outer wall of the vertical block is in clearance fit with a straight cylinder. One end of the straight cylinder is fixedly connected with the lower part of one side of the square box. One side below the vertical block is fixedly connected with a first spring. One end of the first spring is fixedly connected with one end of the inner wall of the straight cylinder.

[0008] Preferably, one side of the bottom of the housing is fixedly connected with a support plate.

[0009] Preferably, the bottom of the inner wall of the housing is fixedly connected with an inclined block.

[0010] Preferably, a collection box is attached to one end of the square box. A plate body is attached to the bottom of the collection box. One end of the plate body is fixedly connected with the lower part of one side of the square box.

[0011] Preferably, the inner wall of the other end of the plate body is in clearance fit with a curved plate. The convex block above one side of the curved plate is in clearance fit with the groove at one end of the collection box. One side of the outer wall of the curved plate is in clearance fit with a second spring. The left and right ends of the second spring are respectively fixedly connected with one side of the outer wall of the curved plate and one end of the inner wall of the plate body.

[0012] An oil-salt heat exchanger for a trough solar thermal power station proposed by the present utility model has the beneficial effects that through the cooperation of a housing, a heat transfer oil injection pipe, a square box and a filtering structure, when the device is in use, the cover plate can be inserted into the inner wall of the square box, so that the filter screen is located inside the square box. Rotate the clamping plate so that the clamping plate rotates upward. The first spring drives the vertical block to move to the right, and the vertical block drives the clamping plate to move to the right. Then, the convex block of the cover plate is inserted into the inner wall of the groove of the clamping plate, and the clamping plate clamps the cover plate, which is convenient for filtering the heat transfer oil, avoiding impurities from entering the pipeline and causing blockage of the pipeline, and preventing the heat exchange work from being affected;

[0013] Through the cooperation of the housing, the second circular plate, the molten salt injection pipe, the molten salt discharge pipe and the inclined block, when the device is in use, the molten salt can be injected through the molten salt injection pipe, and the molten salt enters the housing. The inclined block gathers the molten salt to the right, and the molten salt moves to the right through the through hole of the second circular plate, so that the molten salt is discharged from the molten salt discharge pipe, which is convenient for gathering the molten salt to the discharge port position and avoiding residue when the molten salt needs to be discharged. Brief Description of the Drawings

[0014] Figure 1 is a schematic structural view of the present utility model;

[0015] Figure 2 is a schematic structural view of the housing, the molten salt discharge pipe and the support plate of the present utility model;

[0016] Figure 3 is a schematic structural view of the filter screen and the cover plate of the present utility model;

[0017] Figure 4 is a schematic structural view of the vertical block, the first spring and the straight cylinder of the present utility model;

[0018] Figure 5 is a schematic structural view of the curved plate, the second spring and the plate body of the present utility model;

[0019] Figure 6 is a schematic structural view of the filter screen and the square box of the present utility model.

[0020] In the figure: 1. Housing, 2. Filtering structure, 2a1. Filter screen, 2a2. Cover plate, 2a3. Clamping plate, 2a4. Vertical block, 2a5. First spring, 2a6. Straight cylinder, 2b1. Inclined cylinder, 3. Heat transfer oil injection pipe, 4. Heat transfer oil discharge pipe, 5. Partition plate, 6. First circular plate, 7. Molten salt injection pipe, 8. Molten salt discharge pipe, 9. Support plate, 10. Second circular plate, 11. Pipeline, 12. Inclined block, 13. Square box, 14. Collection box, 15. Curved plate, 16. Second spring, 17. Plate body. Detailed Embodiment

[0021] The present utility model will be further described below with reference to the accompanying drawings:

[0022] Example 1:

[0023] Refer to the attached Figure 1-6 : In this embodiment, an oil-salt heat exchanger for a trough-type solar thermal power station includes a shell 1, one end of the inner wall of the shell 1 is fixedly connected to a partition 5, one end of the partition 5 is fixedly connected to a circular plate 6, the outer wall of the circular plate 6 is fixedly connected to one side of the inner wall of the shell 1, one side inner wall of the circular plate 6 is fixedly connected to one side of the outer wall of the pipe 11, the other side of the outer wall of the pipe 11 is fixedly connected to a circular plate 2 10, the inner wall of the circular plate 2 10 is processed with a through hole, the outer wall of the circular plate 2 10 is fixedly connected to the other side of the inner wall of the shell 1, and the inner wall of the top side of the shell 1 is fixedly connected to a heat transfer oil injection pipe 3.

[0024] A heat transfer oil discharge pipe 4 is fixedly connected to the inner wall of one side of the bottom of the shell 1, a molten salt injection pipe 7 is fixedly connected to the inner wall of one side of the top of the shell 1, a molten salt discharge pipe 8 is fixedly connected to the inner wall of the other side of the bottom of the shell 1, a square box 13 is fixedly connected to the upper outer wall of the heat transfer oil injection pipe 3, a support plate 9 is fixedly connected to one side of the bottom of the shell 1, a threaded hole is machined on the inner wall of one side of the support plate 9, an inclined block 12 is fixedly connected to the bottom of the inner wall of the shell 1, one end of the square box 13 is attached to a collecting box 14, the bottom of the collecting box 14 is attached to a plate 17, one end of the collecting box 14 is fixedly connected to a rubber pad, the rubber pad serves as a seal, and one end of the plate 17 is fixedly connected to the lower side of the square box 13.

[0025] The inner wall gap at the other end of the plate body 17 is fitted with a curved plate 15, and the upper protrusion on one side of the curved plate 15 is fitted with a groove gap at one end of the collecting box 14. The outer wall gap of the curved plate 15 is fitted with a spring 2 16, and the left and right ends of the spring 2 16 are respectively fixedly connected to one side of the outer wall of the curved plate 15 and one end of the inner wall of the plate body 17. The spring 2 16 gives the curved plate 15 a leftward force. A filtering structure 2 is provided on one side of the square box 13. The filtering structure 2 facilitates filtering the heat transfer oil to prevent impurities from entering the pipeline 11 and causing blockage of the pipeline 11, thereby avoiding affecting the heat exchange work.

[0026] The filtering structure 2 includes a cover plate 2a2, and one side of the outer wall of the cover plate 2a2 is gap-fitted with the inner wall of one end of the square box 13. A rubber ring is fixedly connected to the inner wall of one end of the square box 13, and the rubber ring plays a sealing role. One end of the cover plate 2a2 is fixedly connected to the filter screen 2a1. The material and mesh size of the filter screen 2a1 are determined according to actual usage. One side of the bottom of the filter screen 2a1 fits with the protrusion at one end of the inner wall of the square box 13. A plywood 2a3 is fitted in the gap between the protrusions at one end of the cover plate 2a2. A vertical block 2a4 is rotatably connected to the lower side of the plywood 2a3 through a bearing. The bearing allows the plywood 2a3 to rotate on the inner wall above the vertical block 2a4 when subjected to force. The plywood 2a3 is pulled to the left and then rotated ninety degrees, so that the filter screen 2a1 can be disassembled.

[0027] A straight cylinder 2a6 is in clearance fit with the outer wall above the vertical block 2a4. One end of the straight cylinder 2a6 is fixedly connected to the lower side of one side of the square box 13. A first spring 2a5 is fixedly connected to the lower side of one side of the vertical block 2a4. The first spring 2a5 applies a force to the right to the vertical block 2a4. One end of the first spring 2a5 is fixedly connected to one end of the inner wall of the straight cylinder 2a6, which is convenient for filtering the heat-conducting oil, avoiding impurities from entering the pipeline 11 and causing blockage of the pipeline 11, and avoiding affecting the heat exchange work.

[0028] Working principle:

[0029] When the oil-salt heat exchanger is working:

[0030] Insert the cover plate 2a2 into the inner wall of the square box 13, so that the filter screen 2a1 is located inside the square box 13. Rotate the clamping plate 2a3 so that the clamping plate 2a3 rotates to the upper side. The first spring 2a5 drives the vertical block 2a4 to move to the right. The vertical block 2a4 drives the clamping plate 2a3 to move to the right, so that the convex block of the cover plate 2a2 is inserted into the inner wall of the groove of the clamping plate 2a3, and the clamping plate 2a3 clamps the cover plate 2a2 to fix the filter screen 2a1. The heat-conducting oil absorbs the solar heat concentrated by the trough solar thermal power station, and then injects the heat-conducting oil through the injection port at the top of the square box 13. The filter screen 2a1 filters the heat-conducting oil. The filtered heat-conducting oil enters the shell 1 through the heat-conducting oil injection pipe 3. The heat-conducting oil enters from the upper port of the pipeline 11, flows through the inside of the pipeline 11 and then exits from the lower port of the pipeline 11, and then exits from the heat-conducting oil discharge pipe 4. At the same time, the molten salt is injected through the molten salt injection pipe 7. The molten salt enters the shell 1, moves to the right through the through hole of the second circular plate 10, and the molten salt exits from the molten salt discharge pipe 8. During this process, the molten salt contacts and fits with the outer wall of the pipeline 11, thereby realizing the heat exchange work.

[0031] Embodiment 2:

[0032] Refer to the appendix Figure 1-6 In this embodiment, an oil-salt heat exchanger for a trough solar thermal power station, wherein the filtering structure 2 may further include an inclined cylinder 2b1, and the outer wall of the inclined cylinder 2b1 is fixedly connected to the lower part of the inner wall of the square box 13. <x

[0033] Working principle:

[0034] The arrangement of the inclined cylinder 2b1 is convenient for gathering the injected heat-conducting oil, and thus it is convenient for the heat-conducting oil to smoothly enter the inside of the shell 1 through the heat-conducting oil injection pipe 3.

[0035] Although the present invention has been illustrated and described by referring to the preferred embodiments, those skilled in the art should understand that various changes in form and details can be made within the scope of the claims.

Claims

1. An oil-salt heat exchanger for a trough solar thermal power station, comprising a housing (1), characterized in that: One end of the inner wall of the housing (1) is fixedly connected with a partition plate (5). One end of the partition plate (5) is fixedly connected with a first circular plate (6). The outer wall of the first circular plate (6) is fixedly connected with one side of the inner wall of the housing (1). One side inner wall of the first circular plate (6) is fixedly connected with the outer wall of one side of a pipeline (11). The outer wall of the other side of the pipeline (11) is fixedly connected with a second circular plate (10). The outer wall of the second circular plate (10) is fixedly connected with the other side of the inner wall of the housing (1). One side inner wall of the top of the housing (1) is fixedly connected with a heat transfer oil injection pipe (3). One side inner wall of the bottom of the housing (1) is fixedly connected with a heat transfer oil discharge pipe (4). One side inner wall of the top of the housing (1) is fixedly connected with a molten salt injection pipe (7). The other side inner wall of the bottom of the housing (1) is fixedly connected with a molten salt discharge pipe (8). Above the outer wall of the heat transfer oil injection pipe (3), a square box (13) is fixedly connected. A filtering structure (2) is arranged on one side of the square box (13).

2. The oil-salt heat exchanger for a trough solar thermal power station according to claim 1, wherein: The filtering structure (2) includes a cover plate (2a2). One side of the outer wall of the cover plate (2a2) is in clearance fit with one end inner wall of the square box (13). One end of the cover plate (2a2) is fixedly connected with a filter screen (2a1). The bottom of one side of the filter screen (2a1) is in fit with the convex block at one end of the inner wall of the square box (13). The convex block at one end of the cover plate (2a2) is in clearance fit with a clamping plate (2a3). The lower side of one side of the clamping plate (2a3) is rotatably connected with a vertical block (2a4) through a bearing. The upper part of the outer wall of the vertical block (2a4) is in clearance fit with a straight cylinder (2a6). One end of the straight cylinder (2a6) is fixedly connected with the lower side of one side of the square box (13). The lower side of one side of the vertical block (2a4) is fixedly connected with a first spring (2a5). One end of the first spring (2a5) is fixedly connected with one end of the inner wall of the straight cylinder (2a6).

3. The oil-salt heat exchanger for a trough solar thermal power station according to claim 1, wherein: One side of the bottom of the housing (1) is fixedly connected with a support plate (9).

4. The oil-salt heat exchanger for a trough solar thermal power station according to claim 1, characterized in that: The bottom of the inner wall of the housing (1) is fixedly connected with an inclined block (12).

5. The oil-salt heat exchanger for a trough solar thermal power station according to claim 1, wherein: A collection box (14) is attached to one end of the square box (13). A plate body (17) is attached to the bottom of the collection box (14). One end of the plate body (17) is fixedly connected with the lower side of one side of the square box (13).

6. The oil-salt heat exchanger for a trough solar thermal power station according to claim 5, wherein: The other end inner wall of the plate body (17) is in clearance fit with a curved plate (15). The convex block on the upper side of one side of the curved plate (15) is in clearance fit with the groove at one end of the collection box (14). The outer wall of one side of the curved plate (15) is in clearance fit with a second spring (16). The left and right ends of the second spring (16) are respectively fixedly connected with the outer wall of one side of the curved plate (15) and the inner wall of one end of the plate body (17).

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