A piston compressor cylinder head assembly air tightness detection device

Abstract

The utility model discloses a piston compressor cylinder head subassembly air tightness detection device, including installation base, the upper end surface right side of installation base is provided with the inflation pump, the left side edge of installation base upper end surface is provided with the apron, is equipped with the pipe hole on the apron, the inflation pump is connected pipe hole through the gas hose, the middle part of gas hose is connected with pressure detector, the left side of installation base is hinged with cylinder head support board, the end surface of cylinder head support board near apron is equipped with installation recess. The detection device structure simple of this application can realize the quick detection to compressor cylinder head subassembly air tightness, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing of compressor cylinder head assembly, and more specifically, to an airtightness testing device for piston compressor cylinder head assembly. Background Technology

[0002] In the manufacturing process of reciprocating compressors, the airtightness of the pump body is a core indicator that directly affects the overall performance, operational stability, and service life of the compressor. Therefore, testing the airtightness of the pump body is an indispensable and crucial step in the production process. Currently, the industry generally adopts a technical solution for testing the airtightness of reciprocating compressor pump bodies: "After the pump body is assembled, a full inspection of the pump body is carried out in the volumetric testing process on the production line." That is, after all the components constituting the pump body (including the cylinder head assembly) are assembled, the airtightness of the entire pump body is uniformly tested through the volumetric testing process to determine whether the pump body meets the quality standards.

[0003] However, long-term production practice has revealed significant technical deficiencies in existing testing methods, making it difficult to meet the needs of efficient and accurate production quality control. Specific problems are as follows: Leak location is difficult, and troubleshooting efficiency is low: Existing solutions can only detect whether the overall airtightness of the assembled pump body is up to standard, but cannot further pinpoint the specific leak location of a substandard pump body. Since the pump body is assembled from multiple components such as the cylinder head assembly, piston, and cylinder, poor airtightness may originate from sealing defects in the cylinder head assembly itself, or from machining errors or assembly gaps in other components. This necessitates that workers disassemble the pump body and check each component individually, which not only increases additional manpower and time costs but may also cause secondary damage to components during disassembly, seriously affecting production efficiency.

[0004] Batch defects in cylinder head assemblies led to a sharp drop in production first-pass yield and significant losses. In actual production, it was found that the main reason for the poor airtightness of the pump body was improper machining of parts within the cylinder head assembly (such as insufficient flatness of the sealing surface and deviations in the size of the air passage holes). However, the existing solution did not include a separate airtightness testing step before the cylinder head assembly was assembled onto the production line; instead, it was assembled with other components into the pump body and then tested as a whole. If a batch of cylinder head assemblies has batch sealing defects, a large number of the assembled pump bodies from that batch will fail the volumetric testing process. All defective pump bodies must be reworked or scrapped, resulting in a significant waste of raw materials and production costs, production line shutdowns, production delays, and a significant reduction in the overall production first-pass yield, severely impacting the company's production efficiency and delivery cycle. Utility Model Content

[0005] In view of the above-mentioned technical problems in related technologies, this utility model provides a piston compressor cylinder head assembly airtightness testing device, which can solve the above problems.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A piston compressor cylinder head assembly airtightness testing device includes a mounting base. An air pump is mounted on the right side of the upper end face of the mounting base. A cover plate is provided on the left edge of the upper end face of the mounting base. A pipe hole is opened on the cover plate. The air pump is connected to the pipe hole through an air guide hose. A pressure detector is connected to the middle of the air guide hose. A cylinder head support plate is hinged to the left side of the mounting base. An installation groove is opened on the end face of the cylinder head support plate near the cover plate.

[0007] Furthermore, a sealing gasket is provided on the end face of the cover plate near the cylinder head support plate, and a buckle is provided at the top of the cover plate.

[0008] Furthermore, the upper surface of the cylinder head support plate is provided with a handle, the upper surface of the cylinder head support plate is also provided with a buckle groove that matches the buckle, and the lower bottom surface of the cylinder head support plate is provided with a connecting block.

[0009] Furthermore, the left side of the mounting base is provided with two connecting blocks, and the connecting blocks are connected by pins.

[0010] The beneficial effects of this utility model are: the detection device of this application has a simple structure, can realize rapid detection of the airtightness of the compressor cylinder head assembly, and is easy to operate. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] The present invention will now be described in further detail with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of the structure of a piston compressor cylinder head assembly airtightness testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the cylinder head support plate described in an embodiment of the present invention.

[0014] In the picture: 1. Mounting base; 11. Connecting block two; 2. Air pump; 3. Cover plate; 31. Sealing gasket; 32. Buckle; 4. Pipe hole; 5. Air guide hose; 6. Pressure gauge; 7. Cylinder head support plate; 71. Mounting groove; 72. Handle; 73. Buckle groove; 74. Connecting block one; 8. Pin; 9. Cylinder head assembly. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0016] like Figure 1-2 As shown, this utility model discloses an airtightness testing device for a piston compressor cylinder head assembly, including a mounting base 1. An air pump 2 is mounted on the right side of the upper end face of the mounting base 1. A cover plate 3 is provided on the left edge of the upper end face of the mounting base 1. A pipe hole 4 is opened on the cover plate 3. The air pump 2 is connected to the pipe hole 4 through an air guide hose 5. A pressure detector 6 is connected to the middle of the air guide hose 5. A cylinder head support plate 7 is hinged to the left side of the mounting base 1. An installation groove 71 is opened on the end face of the cylinder head support plate 7 near the cover plate 3.

[0017] In a specific embodiment of this application, the end face of the cover plate 3 is provided with a mounting groove 71. The mounting groove 71 is designed according to the shape of the cylinder head assembly and is used to install the cylinder head assembly 9. A handle 72 is provided on the upper end face of the cylinder head support plate 7, which facilitates operation of the cylinder head support plate 7. After the cylinder head assembly 9 is installed in the mounting groove 71, the cylinder head support plate 7 can be moved closer to the cover plate 3 by the handle 72 until the end face of the cylinder head support plate 7 is tightly pressed against the sealing gasket 31. Then, the cover plate 3 and the cylinder head support plate 7 can be locked together by the buckle 32 and the snap groove 73. At this time, the pipe hole 4 is seamlessly connected to the cylinder head inflation hole. The air pump 2 fills the cylinder head assembly with dry air through the air guide hose 5. The pressure value is observed by the pressure detector 6. After the required air pressure is reached, the inflation is stopped. After a delay of 3 seconds, the air pressure drop value of the pressure detector 6 is used to judge whether the air tightness of the cylinder head assembly is qualified.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the airtightness of a piston compressor cylinder head assembly, characterized in that, The device includes a mounting base (1), an air pump (2) is mounted on the right side of the upper end face of the mounting base (1), a cover plate (3) is provided on the left edge of the upper end face of the mounting base (1), a pipe hole (4) is provided on the cover plate (3), the air pump (2) is connected to the pipe hole (4) through an air guide hose (5), a pressure detector (6) is connected to the middle of the air guide hose (5), a cylinder head support plate (7) is hinged to the left side of the mounting base (1), and an installation groove (71) is provided on the end face of the cylinder head support plate (7) near the cover plate (3).

2. The airtightness testing device for a piston compressor cylinder head assembly according to claim 1, characterized in that, A sealing gasket (31) is provided on the end face of the cover plate (3) near the cylinder head support plate (7), and a buckle (32) is provided at the top of the cover plate (3).

3. The airtightness testing device for a piston compressor cylinder head assembly according to claim 2, characterized in that, The upper end face of the cylinder head support plate (7) is provided with a handle (72), and the upper end face of the cylinder head support plate (7) is also provided with a buckle groove (73) that is compatible with the buckle (32). The lower bottom face of the cylinder head support plate (7) is provided with a connecting block (74).

4. The airtightness testing device for a piston compressor cylinder head assembly according to claim 3, characterized in that, The mounting base (1) has two connecting blocks (11) on its left side. The connecting block (74) and the connecting block (11) are connected by a pin (8).

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