Dangerous medium side double O-shaped ring sealing structure for diaphragm compressor
By adding new sealing grooves and new O-rings to the gas disk of the diaphragm compressor, a double-channel O-ring sealing structure is formed, which solves the problem of micro leakage of the membrane head O-ring, significantly strengthens the sealing effect, extends the service life of the equipment, and saves human resources and spare parts consumption.
Patent Information
- Application Number
- CN202421365362.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-06-14
AI Technical Summary
When the diaphragm compressor is used in places with flammable and explosive, corrosive and high exhaust pressure, the slight leakage of the membrane head O-ring is difficult to avoid, resulting in frequent leakage problems, increasing maintenance frequency and human resource consumption.
A hazardous medium-side double O-ring seal structure for diaphragm compressors was designed. By adding new seal grooves and new O-rings to the air disk, a double seal is formed to enhance the sealing effect and maintain the normal operation of the head leakage detection system.
It significantly strengthens the sealing effect, extends the service life of the equipment, reduces the frequency of maintenance, saves human resources, and reduces spare parts consumption, improving economic benefits.
Smart Images
Figure CN222772321U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a double O-ring sealing structure on the dangerous medium side of a diaphragm compressor, belonging to the technical field of diaphragm compressor cylinder cover structure design. Background Art
[0002] The diaphragm compressor skid consists of a motor, crankcase, body, crankshaft, connecting rod, crosshead, piston, air plate, oil plate, diaphragm, buffer tank, air valve and connecting pipes, valves, etc.; due to its unique design and the characteristics of no dynamic sealing points, it is widely used in flammable, explosive, corrosive and high exhaust pressure places.
[0003] Because diaphragm compressors are often used in flammable, explosive, corrosive, and high exhaust pressure places, once a leak occurs, it will cause serious consequences; therefore, diaphragm compressors are generally equipped with a head leakage detection system. When the diaphragm head O-ring leaks or the diaphragm ruptures, the pressure transmitter will trigger an alarm and interlock the shutdown. The reality is that diaphragm head leakage, especially the trace leakage of the gas side diaphragm head O-ring, is difficult to avoid. Diaphragms and O-rings are often disassembled and replaced due to leakage, which is a relatively large workload, and the spare parts and labor costs consumed are huge.
[0004] The existing diaphragm compressors on the market generally use three O-rings to seal the diaphragm head. One O-ring is used to seal the oil-side diaphragm and the oil pan, one O-ring is used to seal the gas-side diaphragm and the gas pan, and the last O-ring is used to seal between the cylinder gas pan and the oil pan. There is only one O-ring seal on the medium side.
[0005] Because diaphragm compressors can compress gas to a maximum of about 45MPa, they are generally widely used in hydrogen refueling stations, hydrogen loading stations and other locations. When filling tube bundle container trucks and hydrogen refueling trucks, they often need to be started and stopped frequently, which often makes leakage problems difficult to solve. Summary of the invention
[0006] According to the problem described in the background, the problem to be solved by the utility model is: to provide a double O-ring sealing structure for the hazardous medium side of a diaphragm compressor, which can enhance the sealing effect, solve the problem of device leakage, and also extend the service life of the equipment, reduce the maintenance frequency, save human resources, and increase economic benefits.
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double O-ring sealing structure for the hazardous medium side of a diaphragm compressor is provided, comprising an oil pan sealing groove, an oil pan O-ring, an air pan sealing groove, an air pan O-ring, an isolation sealing groove, an isolation O-ring, a machine head leakage detection system, an air pan, an oil pan, bolts and a diaphragm, characterized in that it also comprises a new sealing groove and a new O-ring, the air pan and the oil pan are overlapped up and down and fixed by bolts, the diaphragm is located between the air pan and the oil pan, the machine head leakage detection system is located on the oil pan and together with the middle gap, an alarm is generated when there is a leakage, the air pan sealing groove and the isolation sealing groove are opened on the lower end surface of the air pan, the oil pan sealing groove is opened on the upper end surface of the oil pan, the oil pan O-ring is located in the oil pan sealing groove, the air pan O-ring is located in the air pan sealing groove, the isolation O-ring is located in the isolation sealing groove, the new sealing groove is opened on the lower end surface of the air pan and is located on the inner side of the air pan sealing groove, and the new O-ring is located in the new sealing groove.
[0008] The new sealing groove can also be opened on the outside of the gas disc sealing groove, either on the inside or outside, which is equivalent to having two gas disc diaphragm seals on the gas disc.
[0009] The new sealing groove has the same groove depth and groove width as the gas disk sealing groove and is on the same plane. Only one more groove needs to be opened when opening the groove, which will not increase the extra workload, and the head leakage detection system can still operate normally.
[0010] The new O-ring has the same cross-sectional dimensions as the gas disc O-ring, and no additional work is required when purchasing standard parts.
[0011] The isolation sealing groove may also be opened on the oil pan, which is determined based on the manufacturer's actual situation.
[0012] The beneficial effects of the utility model are:
[0013] The utility model is used for the double-pass O-ring sealing structure of the diaphragm compressor. The newly added structure and the original structure are in the same plane, and no extra workload is added during installation. However, after technical transformation, the sealing effect is greatly enhanced, and the machine head leakage detection system can still operate normally, which greatly extends the service life of the equipment, ensures the reliability of the long-term operation of the equipment, reduces the maintenance frequency, and greatly saves human resources.
[0014] As the core components of diaphragm compressors, diaphragms and O-rings are relatively expensive because they need to be resistant to high pressure and corrosion, and basically need to be replaced after each maintenance. The newly added structure extends the service life of the equipment and also means that the consumption of spare parts is greatly reduced, so the economic benefits are relatively considerable. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of the utility model when it is not sealed;
[0016] Figure 2 It is a full view of the utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the utility model after sealing is completed;
[0018] In the figure: 11 is a new sealing groove; 12 is a new O-ring; 21 is an oil pan sealing groove; 22 is an oil pan O-ring; 31 is an air pan sealing groove; 32 is an air pan O-ring; 41 is an isolation sealing groove; 42 is an isolation O-ring; 5 is a machine head leakage detection system; 6 is an air pan; 7 is an oil pan; 8 is a bolt; and 9 is a diaphragm. DETAILED DESCRIPTION
[0019] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0020] Example 1
[0021] like Figure 1-3 As shown, the utility model includes an oil pan sealing groove 21, an oil pan O-ring 22, an air pan sealing groove 31, an air pan O-ring 32, an isolation sealing groove 41, an isolation O-ring 42, a head leakage detection system 5, an air pan 6, an oil pan 7, bolts 8 and a diaphragm 9, characterized in that it also includes a new sealing groove 11 and a new O-ring 12, the air pan 6 and the oil pan 7 are stacked together and fixed by bolts 8, the diaphragm 9 is located between the air pan 6 and the oil pan 7, the head leakage detection system 5 is located on the oil pan 7 and together with the middle gap, when When there is a leakage, an alarm will be generated. The air disk sealing groove 31 and the isolation sealing groove 41 are opened on the lower end surface of the air disk 6, the oil pan sealing groove 21 is opened on the upper end surface of the oil pan 7, the oil pan O-ring 22 is located in the oil pan sealing groove 21, the air disk O-ring 32 is located in the air disk sealing groove 31, the isolation O-ring 42 is located in the isolation sealing groove 41, and a new sealing groove 11 is opened on the lower end surface of the air disk 6 and is located on the inner side of the air disk sealing groove 31, which is equivalent to having two air disk diaphragm seals on the air disk 6, and a new O-ring 12 is located in the new sealing groove 11.
[0022] The new sealing groove 11 has the same groove depth and groove width as the gas disk sealing groove 31 and is on the same plane. Only one more groove needs to be made when making the groove, which will not increase the redundant workload, and the head leakage detection system can still operate normally.
[0023] The cross-sectional dimensions of the new O-ring 12 and the gas disc O-ring 32 are the same, and no additional workload is added when purchasing standard parts.
[0024] Example 2
[0025] like Figure 1-3As shown, the utility model includes an oil pan sealing groove 21, an oil pan O-ring 22, an air pan sealing groove 31, an air pan O-ring 32, an isolation sealing groove 41, an isolation O-ring 42, a head leakage detection system 5, an air pan 6, an oil pan 7, bolts 8 and a diaphragm 9, characterized in that it also includes a new sealing groove 11 and a new O-ring 12, the air pan 6 and the oil pan 7 are stacked together and fixed by bolts 8, the diaphragm 9 is located between the air pan 6 and the oil pan 7, the head leakage detection system 5 is located on the oil pan 7 and together with the middle gap, when When there is a leakage, an alarm will be generated. The air disk sealing groove 31 is opened on the lower end surface of the air disk 6, the oil pan sealing groove 21 and the isolation sealing groove 41 are opened on the upper end surface of the oil pan 7, the oil pan O-ring 22 is located in the oil pan sealing groove 21, the air disk O-ring 32 is located in the air disk sealing groove 31, and the isolation O-ring 42 is located in the isolation sealing groove 41. A new sealing groove 11 is opened on the lower end surface of the air disk 6 and is located on the outside of the air disk sealing groove 31, which is equivalent to having two seals of the air disk diaphragm on the air disk 6, and a new O-ring 12 is located in the new sealing groove 11.
[0026] The new sealing groove 11 has the same groove depth and groove width as the gas disk sealing groove 31 and is on the same plane. Only one more groove needs to be made when making the groove, which will not increase the redundant workload, and the head leakage detection system can still operate normally.
[0027] The cross-sectional dimensions of the new O-ring 12 and the gas disc O-ring 32 are the same, and no additional workload is added when purchasing standard parts.
Claims
1. A double O-ring sealing structure for a hazardous medium side of a diaphragm compressor, comprising an oil pan sealing groove (21), an oil pan O-ring (22), an air pan sealing groove (31), an air pan O-ring (32), an isolation sealing groove (41), an isolation O-ring (42), a head leakage detection system (5), an air pan (6), an oil pan (7), bolts (8) and a diaphragm (9), characterized in that: The invention also comprises a new sealing groove (11) and a new O-ring (12); the gas disc (6) and the oil disc (7) are stacked together and fixed by bolts (8); the diaphragm (9) is located between the gas disc (6) and the oil disc (7); the machine head leakage detection system (5) is located on the oil disc (7) together with the intermediate gap; the gas disc sealing groove (31) and the isolation sealing groove (41) are opened on the lower end surface of the gas disc (6); the oil disc sealing groove (21) is opened on the upper end surface of the oil disc (7); the oil disc O-ring (22) is located in the oil disc sealing groove (21); the gas disc O-ring (32) is located in the gas disc sealing groove (31); the isolation O-ring (42) is located in the isolation sealing groove (41); the new sealing groove (11) is opened on the lower end surface of the gas disc (6) and is located on the inner side of the gas disc sealing groove (31); and the new O-ring (12) is located in the new sealing groove (11).
2. A double O-ring sealing structure for a diaphragm compressor on the hazardous medium side according to claim 1, characterized in that: The new sealing groove (11) can also be opened outside the gas disk sealing groove (31).
3. A double O-ring sealing structure for a diaphragm compressor on the hazardous medium side according to claim 1, characterized in that: The new sealing groove (11) has the same groove depth and groove width as the gas disk sealing groove (31).
4. A double O-ring sealing structure for a diaphragm compressor on the hazardous medium side according to claim 1, characterized in that: The cross-sectional dimensions of the new O-ring (12) and the gas disk O-ring (32) are the same.
5. A double O-ring sealing structure for a diaphragm compressor on the hazardous medium side according to claim 1, characterized in that: The isolation sealing groove (41) may also be opened on the oil pan (7).