A high purity diaphragm compressor with a double pipe cooler

Abstract

The utility model discloses a kind of sleeve pipe coolers for high-purity diaphragm compressor, it is related to diaphragm compressor technical field, the cooler includes several air pipes and several water pipes, each the air pipe is arranged inside one water pipe, each water pipe upper and lower sides on two ends are respectively fixed with two joints one and two joints two, two water pipes are symmetrically installed with two horizontal water pipes on upper and lower sides, the horizontal water pipe one end is connected with joint one, the horizontal water pipe other end is connected with joint two by water pipe connecting piece. The utility model adopts nut locking plus threaded butt joint structure on gas passage sealing, air pipe connecting portion and water pipe inner connecting portion are tightly engaged by thread, cooperate nut fixed, ensure that high-pressure gas has no leakage;On waterway passage sealing, water pipe connecting piece and horizontal water pipe threaded connection place are additionally provided with sealing ring, joint one and joint two and water pipe connecting place are all provided with double sealing structure, effectively prevent cooling water leakage.

Description

Technical Field

[0001] This utility model relates to the field of diaphragm compressor technology, specifically a shell-and-tube cooler for a high-purity diaphragm compressor. Background Technology

[0002] In the field of diaphragm compressor technology, the performance of the cooler directly affects the equipment's operating efficiency and gas purity.

[0003] The currently used coaxial coolers, which consist of two metal tubes of different diameters concentrically nested together, with the inner tube carrying the gas medium and the outer tube carrying cooling water, as mentioned in patent CN107906983A, use flanges welded to the top of the water tube and the outer wall of the gas tube at both ends. This method may lead to an oxide layer forming on the inner side of the gas tube, damaging the high-cleanliness surface of the gas tube and thus affecting the purity of the gas. At the same time, stress concentration may also occur in the weld, leading to a decrease in the strength of the gas tube. In addition, when multiple coolers are connected in series, the gas tubes are connected by joint welding. Welding will produce welding slag residue, and the microscopic unevenness of the weld surface will make it easier for residue to adhere, which will undoubtedly pollute the high-purity gas and fail to meet the requirements.

[0004] Based on this, a shell-and-tube cooler for a high-purity diaphragm compressor is now provided, which can eliminate the drawbacks of existing coolers. Utility Model Content

[0005] The purpose of this invention is to provide a shell-and-tube cooler for a high-purity diaphragm compressor to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A shell-and-tube cooler for a high-purity diaphragm compressor includes several gas pipes and several water pipes. Each gas pipe is disposed inside a water pipe. Each water pipe has two connectors (first and second) fixed on its upper and lower ends respectively. Two transverse water pipes are symmetrically installed on the upper and lower sides between two water pipes. One end of each transverse water pipe is connected to connector (first), and the other end of each transverse water pipe is connected to connector (second) through a water pipe connector. Every two gas pipes are connected by a gas pipe connector.

[0008] Preferably, the inner wall of the water pipe connector is provided with an internal thread, and both ends of the outer wall of the transverse water pipe are provided with external threads. The water pipe connector and the transverse water pipe are threadedly connected by the internal and external threads. The inner wall of the water pipe connector slides against the outer wall of the second connector. A limit ring is fixed at one end of the second connector near the water pipe connector.

[0009] Preferably, a sealing ring is provided between the second connector and the horizontal water pipe.

[0010] Preferably, the inner wall of the connector is provided with an internal thread, and both ends of the outer wall of the transverse water pipe are provided with external threads. The connector and the transverse water pipe are connected by the internal and external threads.

[0011] Preferably, a sealing ring is provided between the connector and the horizontal water pipe.

[0012] Preferably, the airway connector includes an airway fixing part and an airway connecting part. The airway fixing part is fixed to the airway by tightening a nut. The outer wall of the airway connecting part is provided with an external thread. Both ends of the water pipe are provided with an inner connecting part. The inner wall of the inner connecting part is provided with an internal thread. The inner connecting part and the airway connecting part are threaded together by the cooperation of the internal thread and the external thread.

[0013] Preferably, the trachea is a high-cleanliness EP-grade clean trachea.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model adopts a nut locking and threaded connection structure for sealing the gas channel. The gas pipe connection and the water pipe connection are tightly engaged by the thread and fixed with the nut to ensure that there is no leakage of high-pressure gas. For sealing the water channel, a sealing ring is added at the threaded connection between the water pipe connector and the transverse water pipe. Both connector one and connector two are equipped with a double sealing structure at the connection with the water pipe to effectively prevent cooling water leakage.

[0016] 2. The gas pipe of this utility model can be quickly assembled through the connector. The water pipe forms a standard unit through the horizontal water pipe and the water pipe connector, which is convenient for maintenance and replacement. Since the connection between the water pipe and the gas pipe is not sealed by welding, the stress concentration and strength reduction of the gas pipe weld caused by welding are avoided, thus ensuring the nominal strength of the gas pipe. At the same time, welding is avoided to prevent the formation of an oxide layer on the inside of the gas pipe, which would affect the cleanliness of the high-purity gas. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the structure at point A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of the tracheal connector of this utility model.

[0020] Figure reference numerals: 1. Air tube; 2. Water tube; 3. Connector 1; 4. Connector 2; 5. Water tube connector; 6. Horizontal water tube; 7. Internal connection part; 8. Air tube connector; 81. Air tube fixing part; 82. Air tube connection part. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] In one embodiment, such as Figures 1-3 As shown, a shell-and-tube cooler for a high-purity diaphragm compressor includes several gas pipes 1 and several water pipes 2. Each gas pipe 1 is disposed inside a water pipe 2. Each water pipe 2 has two connectors 1 3 and two connectors 2 4 fixed on its upper and lower ends, respectively. Two transverse water pipes 6 are symmetrically installed on the upper and lower sides between two water pipes 2. One end of each transverse water pipe 6 is connected to connector 1 3, and the other end of each transverse water pipe 6 is connected to connector 2 4 through a water pipe connector 5. Each pair of gas pipes 1 is connected by a gas pipe connector 8.

[0023] In this embodiment, high-purity gas flows through a continuous channel formed by gas pipe 1, while cooling water circulates through an independent water path formed by water pipe 2 and horizontal water pipe 6.

[0024] The compressed high-temperature gas enters the first section of gas pipe 1 through the gas pipe inlet. Gas pipes 1 are sealed together by gas pipe connectors 8. Each gas pipe 1 is wrapped by an independent water pipe 2, and the heat of the gas is conducted to the external cooling water through the gas pipe wall.

[0025] In this system, connector 3 on one water pipe 2 is the water inlet, and connector 3 on the other water pipe 2 is closed. Connector 4 on the other water pipe 2 is the drain outlet, and connector 4 on the other water pipe 2 is closed. Cooling water enters water pipe 2 through the water inlet and then flows to the next water pipe 2 through the horizontal water pipe 6, thus realizing a series water circuit.

[0026] In an optional embodiment, the inner wall of the water pipe connector 5 is provided with an internal thread, and both ends of the outer wall of the transverse water pipe 6 are provided with external threads. The water pipe connector 5 and the transverse water pipe 6 are threadedly connected by the internal and external threads. The inner wall of the water pipe connector 5 slides against the outer wall of the connector 2 4. A limit ring is fixed at one end of the connector 2 4 near the water pipe connector 5.

[0027] It should be noted that the inner wall of the water pipe connector 5 is provided with internal threads, which form a mechanical lock with the external threads at both ends of the transverse water pipe 6, providing the main connection strength; at the same time, the inner wall of the water pipe connector 5 and the outer wall of the connector 2 4 adopt a sliding fit, which allows the transverse water pipe 6 to produce slight axial displacement, avoiding loosening of the threaded connection due to stress concentration; the limiting ring restricts the axial movement range of the transverse water pipe 6, ensuring the alignment accuracy of the fluid channels between the water pipe 2 and the transverse water pipe 6 after connection.

[0028] In an optional embodiment, a sealing ring is provided between the second connector 4 and the transverse water pipe 6.

[0029] It should be noted that a sealing ring is installed between connector 2 4 and the horizontal water pipe 6 to prevent water from leaking out from here and affecting the cooling of the gas.

[0030] In an optional embodiment, the inner wall of the connector 3 is provided with internal threads, and both ends of the outer wall of the transverse water pipe 6 are provided with external threads. The connector 3 and the transverse water pipe 6 are connected by the mating of the internal and external threads.

[0031] It should be noted that the external thread section of the transverse water pipe 6 is screwed into the internal thread of the connector 3 to ensure that the connection position between the water pipe 2 and the transverse water pipe 6 remains unchanged after each assembly, thus maintaining the uniformity of the cooling water flow field.

[0032] In an optional embodiment, a sealing ring is provided between the connector 3 and the transverse water pipe 6.

[0033] It should be noted that a sealing ring is installed between connector 3 and the horizontal water pipe 6 to prevent water from leaking out from here and affecting the cooling of the gas.

[0034] In an optional embodiment, the airway connector 8 includes an airway fixing part 81 and an airway connecting part 82. The airway fixing part 81 is fixed to the airway 1 by tightening a nut. The outer wall of the airway connecting part 82 is provided with an external thread. Both ends of the water pipe 2 are provided with an inner connecting part 7. The inner wall of the inner connecting part 7 is provided with an internal thread. The inner connecting part 7 and the airway connecting part 82 are threadedly connected by the mating of the internal thread and the external thread.

[0035] It should be noted that the air pipe fixing part 81 is fixed to the air pipe 1 by tightening the nut to ensure that the air pipe 1 does not slip under high pressure conditions; the external thread section of the air pipe connecting part 82 is screwed into the inner connecting part 7 of the water pipe 2 to ensure that the limiting shoulder is in contact with the end face of the inner connecting part 7 and maintain the uniformity of the gas flow field.

[0036] In an optional embodiment, the trachea 1 is a high-cleanliness EP-grade clean tube.

[0037] It should be noted that high-purity EP-grade clean tubing ensures the cleanliness of its inner wall and does not contaminate high-purity gases.

[0038] The above embodiment discloses a sleeve-type cooler for a high-purity diaphragm compressor. The compressed high-temperature gas enters the first EP-grade clean pipe through the inlet of pipe 1 to ensure gas purity, forming a continuous sealed channel under the action of pipe connector 8. Pipe connector 8 is locked to the external thread of pipe connector 82 via a nut on pipe fixing part 81, achieving a sealed connection between pipes and ensuring no slippage and uniform flow field under high-pressure conditions. The gas flows sequentially through each section of pipe 1 and finally exits from the end pipe 1.

[0039] Cooling water enters from the inlet of connector 3 of the first water pipe 2, flows along the inner cavity of the water pipe 2, is transferred to the next stage water pipe 2 through the horizontal water pipe 6, and is finally discharged from the outlet of connector 4 of the last stage water pipe 2.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high purity diaphragm compressor cartridge cooler characterized by, It includes several air pipes (1) and several water pipes (2). Each air pipe (1) is set inside a water pipe (2). Each water pipe (2) has two connectors (3) and two connectors (4) fixed on its upper and lower sides respectively. Two horizontal water pipes (6) are symmetrically installed on the upper and lower sides between two water pipes (2). One end of the horizontal water pipe (6) is connected to connector (3), and the other end of the horizontal water pipe (6) is connected to connector (4) through a water pipe connector (5). Each pair of air pipes (1) is connected through an air pipe connector (8).

2. The coaxial cooler for a high-purity diaphragm compressor according to claim 1, characterized in that, The inner wall of the water pipe connector (5) is provided with an internal thread, and both ends of the outer wall of the transverse water pipe (6) are provided with external threads. The water pipe connector (5) and the transverse water pipe (6) are connected by the internal and external threads. The inner wall of the water pipe connector (5) slides against the outer wall of the connector (4). A limit ring is fixed at one end of the connector (4) near the water pipe connector (5).

3. A shell-and-tube cooler for a high-purity diaphragm compressor according to claim 2, characterized in that, A sealing ring is provided between the second connector (4) and the horizontal water pipe (6).

4. A shell-and-tube cooler for a high-purity diaphragm compressor according to claim 1, characterized in that, The inner wall of the connector (3) is provided with an internal thread, and both ends of the outer wall of the transverse water pipe (6) are provided with external threads. The connector (3) and the transverse water pipe (6) are connected by the internal and external threads.

5. A shell-and-tube cooler for a high-purity diaphragm compressor according to claim 1, characterized in that, A sealing ring is provided between the connector (3) and the horizontal water pipe (6).

6. A shell-and-tube cooler for a high-purity diaphragm compressor according to claim 1, characterized in that, The air pipe connector (8) includes an air pipe fixing part (81) and an air pipe connecting part (82). The air pipe fixing part (81) is fixed to the air pipe (1) by tightening with a nut. The outer wall of the air pipe connecting part (82) is provided with an external thread. The inner walls of both ends of the water pipe (2) are provided with an inner connecting part (7). The inner wall of the inner connecting part (7) is provided with an internal thread. The inner connecting part (7) and the air pipe connecting part (82) are threaded together by the cooperation of the internal thread and the external thread.

7. A shell-and-tube cooler for a high-purity diaphragm compressor according to claim 1, characterized in that, The trachea (1) is a high-cleanliness EP-grade clean tube.

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