Parallel water cooling structure for hydrogen fluoride plant heat exchange system

Abstract

The utility model discloses a kind of parallel water cooling structures for hydrogen fluoride workshop heat exchange system, including first water cooling heat exchanger, the side of first water cooling heat exchanger is equipped with second water cooling heat exchanger, the upper end surface of first water cooling heat exchanger and second water cooling heat exchanger is fixed with a square plate, the outside of square plate is equipped with connecting cover, the middle position of the lower end surface of connecting cover is equipped with square groove. When it is needed to carry out descaling treatment to the inside of first water cooling heat exchanger or second water cooling heat exchanger or it is needed to be disassembled to carry out maintenance to its internal structure, after pressing down ring slidingly installed on the outside of the upper end surface of connecting cover is pressed down, connecting cover and heat transfer cooling mechanism connected with the inside of first water cooling heat exchanger or second water cooling heat exchanger can be directly lifted by crane, and the convenience when equipment is maintained is improved by the above technical scheme.

Description

Technical Field

[0001] This utility model relates to the field of water cooling technology, specifically a parallel water cooling structure for a hydrogen fluoride workshop heat exchange system. Background Technology

[0002] The heat exchange system in a hydrogen fluoride workshop refers to a complete set of combined equipment used to achieve heat exchange, temperature control, and energy recovery during the hydrogen fluoride production process. It is one of the key auxiliary systems of the hydrogen fluoride production unit and directly affects reaction efficiency, product purity, safety, and energy consumption.

[0003] The water-cooled structure of the heat exchange system in the hydrogen fluoride workshop refers to the systematic structural design in which water or circulating cooling water is used as the cooling medium during the hydrogen fluoride production process. The system exchanges heat with HF gas or liquid through heat exchangers indirect or direct contact to achieve condensation, cooling or heat recovery.

[0004] However, the existing heat exchange system in the hydrogen fluoride workshop has poor cooling effect due to its water-cooled structure. Furthermore, if the equipment has been used for a long time and the internal scaling becomes too severe, it is necessary to shut down the equipment and stop the production of hydrogen fluoride to descale the internal structure. In addition, the structure of the water-cooled system is relatively complex, making maintenance inconvenient when problems occur. Therefore, it does not meet the existing requirements. To address this, we propose a parallel water-cooled structure for the heat exchange system in the hydrogen fluoride workshop. Utility Model Content

[0005] The purpose of this utility model is to provide a parallel water-cooling structure for a hydrogen fluoride workshop heat exchange system, in order to solve the problems mentioned in the background art, such as the poor cooling effect of the existing water-cooling structure in the hydrogen fluoride workshop heat exchange system, the need to shut down the equipment and stop hydrogen fluoride production to descale the inside of the water-cooling structure if the equipment has been used for too long and the internal scaling is too serious, and the complex structure of the water-cooling system, which makes maintenance inconvenient when problems occur.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a parallel water-cooled structure for a heat exchange system in a hydrogen fluoride workshop, comprising a first water-cooled heat exchanger, a second water-cooled heat exchanger provided on one side of the first water-cooled heat exchanger, a square plate fixed to the upper end face of both the first and second water-cooled heat exchangers, a connecting cover provided on the outer side of the square plate, a square groove provided in the middle of the lower end face of the connecting cover, and the connecting cover fitting around the outer side of the square plate through the square groove;

[0007] A pressure ring is slidably installed on the outer side of the upper end face of the connecting cover. The lower end face of the pressure ring is a first inclined surface. A push plate is provided below the first inclined surface. A claw is fixed on the lower end face of the push plate and is slidably connected to the connecting cover. The upper end face of the top end of the claw is a fixed plane. The upper end face of the fixed plane is in contact with the lower end face of the square plate.

[0008] A fixing spring is connected to one side of the outer surface of the claw, and the lower end face of the top end of the claw is a second inclined surface.

[0009] Preferably, a fluoropolymer-lined butterfly valve is installed on the upper side of the rear end face of the first water-cooled heat exchanger and the upper side of the front end face of the second water-cooled heat exchanger. A diversion pipe is installed between the two fluoropolymer-lined butterfly valves, and the diversion pipe is connected to the interior of the first water-cooled heat exchanger and the second water-cooled heat exchanger through the two fluoropolymer-lined butterfly valves.

[0010] Preferably, a ring of fixed connecting rods is fixedly provided on the upper inner wall of the square groove, and a floating head tube plate is fixedly provided on the lower end face of the plurality of fixed connecting rods. A heat transfer and cooling mechanism is fixedly installed on the lower end face of the floating head tube plate.

[0011] Preferably, a water outlet pipe is installed between the lower side of the rear end face of the second water-cooled heat exchanger and the lower side of the front end face of the first water-cooled heat exchanger, and the water outlet pipe is connected to the interior of both the first and second water-cooled heat exchangers.

[0012] Preferably, the inner wall of the square groove has a square cross-sectional shape, the outer surface of the square plate is in contact with the inner wall of the square groove, and the square plate and the square groove are slidably connected.

[0013] Preferably, the upper end face of the square plate is in contact with the upper inner wall of the square groove, and the two square plates are integrally formed with the first water-cooled heat exchanger and the second water-cooled heat exchanger, respectively.

[0014] Preferably, a plurality of parallel fixing rings are provided below the diversion pipe, and the front end and the rear end of the parallel fixing rings are respectively fixedly sleeved on the outer surfaces of the second water-cooled heat exchanger and the first water-cooled heat exchanger.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model connects the first and second water-cooled heat exchangers in parallel using a diversion pipe, two fluoropolymer-lined butterfly valves, and a water outlet pipe to improve the overall water cooling effect of the equipment. When the internal scaling of the first or second water-cooled heat exchanger becomes too severe, the corresponding fluoropolymer-lined butterfly valve is closed to stop the water supply and temporarily stop its use. Then, while the other water-cooled heat exchanger is working, the first or second water-cooled heat exchanger with severe internal scaling can be descaled. This technical solution improves the water cooling effect of the equipment and prevents the entire hydrogen fluoride production line from having to stop due to the need for internal descaling of the water-cooled heat exchangers.

[0017] 2. This utility model utilizes a heat transfer and cooling mechanism within the first and second water-cooled heat exchangers. This mechanism is fixed to a connecting cover located on the outer side of the top end of the first and second water-cooled heat exchangers via a floating head tube plate and a fixed connecting rod. When descaling or disassembly is required for the internal structure of the first or second water-cooled heat exchanger, pressing down on the sliding ring on the outer side of the upper end of the connecting cover releases the fixation between the connecting cover and the first or second water-cooled heat exchanger. Then, a crane can be used to lift the connecting cover upwards, allowing the connecting cover and the indirectly fixed heat transfer and cooling mechanism for water-cooled heat exchange to be extracted directly from the interior of the first or second water-cooled heat exchanger. This technical solution allows maintenance personnel to more easily repair or descal the internal structure of the first or second water-cooled heat exchanger, thus improving the equipment's convenience. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the entire utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0022] In the diagram: 1. First water-cooled heat exchanger; 2. Second water-cooled heat exchanger; 3. Fluorine-lined butterfly valve; 4. Diverter pipe; 5. Square plate; 6. Connecting cover; 7. Square groove; 8. Lower pressure ring; 9. First inclined surface; 10. Push plate; 11. Claw; 12. Fixing spring; 13. Floating head tube sheet; 14. Heat transfer and cooling mechanism; 15. Water outlet pipe; 16. Fixed plane; 17. Fixed connecting rod; 18. Second inclined surface. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] The first water-cooled heat exchanger 1 (model OR-60), the fixing spring 12 (model JX110), and the fluoropolymer-lined butterfly valve 3 (model D341X-10) mentioned in this utility model can be obtained from the market or through private customization.

[0025] Please see Figures 1 to 4 An embodiment of this utility model is provided: a parallel water-cooled structure for a heat exchange system in a hydrogen fluoride workshop, including a first water-cooled heat exchanger 1, a second water-cooled heat exchanger 2 on one side of the first water-cooled heat exchanger 1, a square plate 5 fixed on the upper end face of both the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2, a connecting cover 6 on the outer side of the square plate 5, a square groove 7 in the middle of the lower end face of the connecting cover 6, and the connecting cover 6 is fitted onto the outer side of the square plate 5 through the square groove 7;

[0026] A pressing ring 8 is slidably installed on the outer side of the upper end face of the connecting cover 6. The lower end face of the pressing ring 8 is a first inclined surface 9. A push plate 10 is provided below the first inclined surface 9. A claw 11 is fixed on the lower end face of the push plate 10 and is slidably connected to the connecting cover 6. The upper end face of the top end of the claw 11 is a fixing plane 16. The upper end face of the fixing plane 16 is in contact with the lower end face of the square plate 5.

[0027] A fixing spring 12 is connected to one side of the outer surface of the claw 11, and the lower end face of the top end of the claw 11 is a second inclined surface 18.

[0028] A fluoropolymer-lined butterfly valve 3 is installed on the upper side of the rear end face of the first water-cooled heat exchanger 1 and the upper side of the front end face of the second water-cooled heat exchanger 2. A diversion pipe 4 is installed between the two fluoropolymer-lined butterfly valves 3, and the diversion pipe 4 communicates with the interior of the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 through the two fluoropolymer-lined butterfly valves 3 respectively. A water outlet pipe 15 is installed between the lower side of the rear end face of the second water-cooled heat exchanger 2 and the lower side of the front end face of the first water-cooled heat exchanger 1, and the water outlet pipe 15 communicates with the interior of both the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2. The above structure is connected by a diversion pipe. Pipe 4, two fluoropolymer-lined butterfly valves 3, and a water outlet pipe 15 connect the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 in parallel. When the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 need to be used for water-cooled heat exchange, hot water that needs to be cooled is input into the inside of the branch pipe 4. The hot water entering the inside of the branch pipe 4 will enter the inside of the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 through the two fluoropolymer-lined butterfly valves 3 respectively. The first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 are cooled at the same time, thereby achieving the overall water-cooling effect of the equipment.

[0029] When the internal scaling of the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2 is too severe, the corresponding fluoropolymer-lined butterfly valve 3 is closed to stop the continued supply of water to its interior and temporarily stop its use. Then, during the operation of the other water-cooled heat exchanger, the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2 with excessive internal scaling can be descaled.

[0030] The above technical solution improves the water cooling effect of the equipment and prevents the entire hydrogen fluoride production line from having to stop due to the need for descaling of the water-cooled heat exchanger.

[0031] A ring of fixed connecting rods 17 is fixedly installed on the upper inner wall of the square groove 7. A floating head tube plate 13 is fixed to the lower end face of the multiple fixed connecting rods 17. A heat transfer and cooling mechanism 14 is fixedly installed on the lower end face of the floating head tube plate 13. When it is necessary to repair or descale the internal structure of the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2, the lower pressure ring 8, which is slidably installed on the outer side of the upper end face of the connecting cover 6, is pressed down. As the lower pressure ring 8 descends, the first inclined surface 9 located on the lower end face of the lower pressure ring 8 will contact the push plate 10 fixed to the upper end face of the claw 11. Under the action of the first inclined surface 9, as the lower pressure ring 8 descends, the push plate... 10 and 11 will be pushed outward. As 11 is pushed outward, the fixing plane 16 at the top end of 11 will gradually leave the lower end of the square plate 5. When the fixing plane 16 on 11 is no longer in contact with the lower end of the square plate 5, the fixing between the square plate 5 and the connecting cover 6, which are fixed together by 11, will be released. Then, the connecting cover 6 can be directly lifted upward by a crane to extract the connecting cover 6 and the heat transfer and cooling mechanism 14, which is indirectly fixed to it and used for water-cooled heat exchange, directly from the inside of the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2.

[0032] The above technical solutions enable maintenance personnel to more easily repair or descale the internal structure of the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2, thereby improving the convenience of the equipment.

[0033] After the internal repair or descaling of the first water-cooled heat exchanger 1 or the second water-cooled heat exchanger 2 is completed, the connecting cover 6 and the heat transfer and cooling mechanism 14 are lowered directly using a crane. As the heat transfer and cooling mechanism 14 descends, it will gradually enter the interior of the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2.

[0034] As the connecting cover 6 descends, the second inclined surface 18 on the lower end of the multiple claws 11 inside the square groove 7 on the lower end face of the connecting cover 6 will contact the edge of the upper end face of the square plate 5. Under the action of the second inclined surface 18, as the connecting cover 6 descends, the claws 11 will be gradually pushed outward and squeeze the fixing spring 12 connected to them. When the connecting cover 6 completely covers the outer surface of the square plate 5, the claws 11 can be pushed inward by the reaction action of the squeezed fixing spring 12, so that the fixing plane 16 at the top end of the claws 11 is once again in contact with the lower end face of the square plate 5, thereby fixing the connecting cover 6 and the heat transfer and cooling mechanism 14.

[0035] The inner wall of the square groove 7 has a square cross-section. The outer surface of the square plate 5 is in contact with the inner wall of the square groove 7, and the square plate 5 and the square groove 7 are slidably connected. The upper end face of the square plate 5 is in contact with the upper inner wall of the square groove 7, and the two square plates 5 are integrally formed with the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2, respectively. This structure can ensure the stability of the connecting cover 6 fixed to the outside of the square plate 5 and prevent it from rotating on its own.

[0036] Multiple parallel fixing rings are provided below the diversion pipe 4, and the front and rear ends of the parallel fixing rings are respectively fixedly sleeved on the outer surfaces of the second water-cooled heat exchanger 2 and the first water-cooled heat exchanger 1; the parallel fixing rings can fix the first water-cooled heat exchanger 1 and the second water-cooled heat exchanger 2 together, thereby increasing the overall stability of the equipment.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A parallel water-cooled structure for a heat exchange system in a hydrogen fluoride workshop, comprising a first water-cooled heat exchanger (1), characterized in that: A second water-cooled heat exchanger (2) is provided on one side of the first water-cooled heat exchanger (1). A square plate (5) is fixed on the upper end face of both the first water-cooled heat exchanger (1) and the second water-cooled heat exchanger (2). A connecting cover (6) is provided on the outer side of the square plate (5). A square groove (7) is provided in the middle of the lower end face of the connecting cover (6). The connecting cover (6) is fitted onto the outer side of the square plate (5) through the square groove (7). A pressure ring (8) is slidably installed on the outer side of the upper end face of the connecting cover (6). The lower end face of the pressure ring (8) is a first inclined surface (9). A push plate (10) is provided below the first inclined surface (9). A claw (11) is fixed on the lower end face of the push plate (10) and is slidably connected to the connecting cover (6). The upper end face of the top end of the claw (11) is a fixed plane (16). The upper end face of the fixed plane (16) is in contact with the lower end face of the square plate (5). A fixing spring (12) is connected to one side of the outer surface of the claw (11), and the lower end face of the top end of the claw (11) is a second inclined surface (18).

2. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 1, characterized in that: A fluoropolymer-lined butterfly valve (3) is installed on the upper side of the rear end face of the first water-cooled heat exchanger (1) and the upper side of the front end face of the second water-cooled heat exchanger (2). A diversion pipe (4) is installed between the two fluoropolymer-lined butterfly valves (3), and the diversion pipe (4) is connected to the interior of the first water-cooled heat exchanger (1) and the second water-cooled heat exchanger (2) through the two fluoropolymer-lined butterfly valves (3).

3. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 1, characterized in that: A ring of fixed connecting rods (17) is fixedly provided on the upper inner wall of the square groove (7), and a floating head tube plate (13) is fixedly provided on the lower end face of the multiple fixed connecting rods (17). A heat transfer and cooling mechanism (14) is fixedly installed on the lower end face of the floating head tube plate (13).

4. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 1, characterized in that: A water outlet pipe (15) is installed between the lower side of the rear end face of the second water-cooled heat exchanger (2) and the lower side of the front end face of the first water-cooled heat exchanger (1), and the water outlet pipe (15) is connected to the interior of both the first water-cooled heat exchanger (1) and the second water-cooled heat exchanger (2).

5. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 1, characterized in that: The inner wall of the square groove (7) has a square cross-section. The outer surface of the square plate (5) is in contact with the inner wall of the square groove (7), and the square plate (5) and the square groove (7) are slidably connected.

6. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 1, characterized in that: The upper end face of the square plate (5) is attached to the upper inner wall of the square groove (7), and the two square plates (5) are integrally formed with the first water-cooled heat exchanger (1) and the second water-cooled heat exchanger (2).

7. The parallel water-cooled structure for a hydrogen fluoride workshop heat exchange system according to claim 2, characterized in that: The lower part of the diversion pipe (4) is provided with multiple parallel fixing rings, and the front end and the rear end of the parallel fixing rings are respectively fixedly sleeved on the outer surface of the second water-cooled heat exchanger (2) and the first water-cooled heat exchanger (1).

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