Series control system for multiple devices of diaphragm compressor

Abstract

The utility model discloses a diaphragm compressor multi-equipment series connection control system, which relates to the technical field of diaphragm compressors, and comprises an M1 diaphragm compressor and an M2 diaphragm compressor, a first-stage cylinder air inlet on the M1 diaphragm compressor is connected with an air outlet on an air inlet buffer tank, an air source is introduced into the air inlet on the air inlet buffer tank, and a second-stage cylinder air inlet on the M2 diaphragm compressor is connected with an air outlet on the M2 diaphragm compressor. A first-stage gas assembly is arranged between a first-stage cylinder exhaust port in the M1 diaphragm compressor and a second-stage cylinder air inlet in the M1 diaphragm compressor, a second-stage gas assembly is arranged between a second-stage cylinder exhaust port in the M1 diaphragm compressor and a third-stage cylinder air inlet in the M2 diaphragm compressor, and a bridging valve is arranged between an air outlet in the air inlet buffer tank and the second-stage gas assembly. And a third-stage cylinder gas outlet in the M2 diaphragm compressor is connected with a third-stage gas assembly. The temperature rise of the series control device is much lower than that of a single device (abnormal work), too high temperature is avoided, damage to the device is avoided, stable output air pressure is guaranteed, and the shutdown risk is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of diaphragm compressors, and specifically to a series control system for multiple diaphragm compressors. Background Technology

[0002] A diaphragm compressor is a special type of positive displacement compressor that compresses and delivers gas through the reciprocating motion of a diaphragm within a cylinder. In existing technologies, when a single unit (high-pressure equipment) is used (e.g.) Figure 1 As shown, a normal pressure air source ensures stable operation of the equipment. If the air source pressure is low, the equipment can still work, but its efficiency will be greatly reduced and the working time will be much longer. Because the equipment cannot work properly, the exhaust temperature will rise sharply, which will further weaken the equipment's lifespan. Summary of the Invention

[0003] The purpose of this invention is to provide a series control system for multiple diaphragm compressors to overcome the aforementioned defects in the prior art.

[0004] A series control system for multiple diaphragm compressors includes an M1 diaphragm compressor and an M2 diaphragm compressor. The inlet of the first-stage cylinder of the M1 diaphragm compressor is connected to the outlet of the inlet buffer tank. An air source is introduced into the inlet of the inlet buffer tank. A first-stage gas assembly is provided between the exhaust port of the first-stage cylinder of the M1 diaphragm compressor and the inlet of the second-stage cylinder of the M1 diaphragm compressor. A second-stage gas assembly is provided between the exhaust port of the second-stage cylinder of the M1 diaphragm compressor and the inlet of the third-stage cylinder of the M2 diaphragm compressor. A bridging valve is provided between the outlet of the inlet buffer tank and the second-stage gas assembly. A third-stage gas assembly is connected to the outlet of the third-stage cylinder of the M2 diaphragm compressor.

[0005] Preferably, the primary gas assembly includes a primary cooler and a primary buffer tank. The inlet of the primary cooler is connected to the exhaust port of the primary cylinder on the M1 diaphragm compressor, the outlet of the primary cooler is connected to the inlet of the primary buffer tank, and the outlet of the primary buffer tank is connected to the inlet of the secondary cylinder on the M1 diaphragm compressor.

[0006] Preferably, the secondary gas assembly includes a secondary cooler and a secondary buffer tank. The inlet of the secondary cooler is connected to the exhaust port of the secondary cylinder on the M1 diaphragm compressor, the outlet of the secondary cooler is connected to the inlet of the secondary buffer tank, and the outlet of the secondary buffer tank is connected to the inlet of the tertiary cylinder on the M2 diaphragm compressor.

[0007] Preferably, the three-stage gas assembly includes a three-stage cooler and a three-stage buffer tank. The air inlet of the three-stage cooler is connected to the exhaust port of the three-stage cylinder on the M2 diaphragm compressor, and the air outlet of the three-stage cooler is connected to the air inlet of the three-stage buffer tank. The air outlet of the three-stage buffer tank is used to discharge gas.

[0008] Preferably, one end of the bridging valve is connected to the air outlet on the air inlet buffer tank, and the other end of the bridging valve is connected to the air inlet of the secondary cooler.

[0009] Preferably, the air inlet of the air inlet buffer tank is equipped with an air inlet pressure transmitter and an air inlet pressure indicator alarm.

[0010] Preferably, the exhaust pressure transmitter and exhaust pressure indicator alarm are provided at the exhaust port of the secondary buffer tank.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] This application uses a pipeline to draw air from the high-pressure equipment when the inlet pressure is normal to meet operational requirements. When the inlet pressure is too low and outside the operating range of the high-pressure equipment, the pipeline from the inlet to the high-pressure equipment is closed, and a newly added low-pressure device is activated. The exhaust port of the low-pressure device is connected to the inlet of the high-pressure equipment. This series-incremental air supply control method allows for lower intake pressure and maximizes the utilization rate of the intake air source, minimizing losses and waste caused by insufficient unloading due to high residual air pressure in the intake pipe. The temperature rise of the series-controlled equipment is much lower than that of a single device (abnormal operation), preventing excessively high temperatures and damage to the equipment, ensuring stable output air pressure, and reducing the risk of downtime. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a single device operating in the prior art.

[0014] Figure 2 This is a schematic diagram of the structure of multiple diaphragm compressors working in series according to this utility model.

[0015] In the diagram, 1. M1 diaphragm compressor; 2. Inlet buffer tank; 21. Inlet pressure transmitter; 22. Inlet pressure indicator and alarm; 3. Primary gas assembly; 31. Primary cooler; 32. Primary buffer tank; 4. M2 diaphragm compressor; 5. Secondary gas assembly; 51. Secondary cooler; 52. Secondary buffer tank; 521. Exhaust pressure transmitter; 522. Exhaust pressure indicator and alarm; 6. Jumper valve; 7. Tertiary gas assembly; 71. Tertiary cooler; 72. Tertiary buffer tank. Detailed Implementation

[0016] The following detailed description of the embodiments, with reference to the accompanying drawings, will further illustrate the specific implementation of this utility model, in order to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the concept and technical solution of this utility model.

[0017] like Figure 1-2 As shown, this utility model provides a series control system for multiple diaphragm compressors, including M1 diaphragm compressor 1 and M2 diaphragm compressor 4. The air inlet of the first stage cylinder of the M1 diaphragm compressor 1 is connected to the air outlet of the air inlet buffer tank 2. An air source is introduced into the air inlet of the air inlet buffer tank 2. An air inlet pressure transmitter 21 and an air inlet pressure indicator alarm 22 are provided at the air inlet of the air inlet buffer tank 2.

[0018] A primary gas assembly 3 is provided between the exhaust port of the primary cylinder on the M1 diaphragm compressor 1 and the inlet port of the secondary cylinder on the M1 diaphragm compressor 1. The primary gas assembly 3 includes a primary cooler 31 and a primary buffer tank 32. The inlet port of the primary cooler 31 is connected to the exhaust port of the primary cylinder on the M1 diaphragm compressor 1, the outlet port of the primary cooler 31 is connected to the inlet port of the primary buffer tank 32, and the outlet port of the primary buffer tank 32 is connected to the inlet port of the secondary cylinder on the M1 diaphragm compressor 1.

[0019] A secondary gas assembly 5 is provided between the exhaust port of the second stage cylinder on the M1 diaphragm compressor 1 and the inlet port of the third stage cylinder on the M2 diaphragm compressor 4. The secondary gas assembly 5 includes a secondary cooler 51 and a secondary buffer tank 52. The inlet port of the secondary cooler 51 is connected to the exhaust port of the second stage cylinder on the M1 diaphragm compressor 1, the outlet port of the secondary cooler 51 is connected to the inlet port of the secondary buffer tank 52, and the outlet port of the secondary buffer tank 52 is connected to the inlet port of the third stage cylinder on the M2 diaphragm compressor 4. An exhaust pressure transmitter 521 and an exhaust pressure indicator alarm 522 are provided at the outlet port of the secondary buffer tank 52. One end of the bridging valve 6 is connected to the outlet port of the intake buffer tank 2, and the other end of the bridging valve 6 is connected to the inlet port of the secondary cooler 51.

[0020] A three-stage gas assembly 7 is connected to the outlet of the three-stage cylinder on the M2 diaphragm compressor 4. The three-stage gas assembly 7 includes a three-stage cooler 71 and a three-stage buffer tank 72. The inlet of the three-stage cooler 71 is connected to the outlet of the three-stage cylinder on the M2 diaphragm compressor 4, and the outlet of the three-stage cooler 71 is connected to the inlet of the three-stage buffer tank 72. The outlet of the three-stage buffer tank 72 is used to discharge gas.

[0021] Detailed implementation methods and principles:

[0022] During operation, the remaining air pressure in the inlet buffer tank 2 is first lower than the operating range of the M2 diaphragm compressor 4 (high-pressure equipment). The frequency converter of the M2 motor on the M2 diaphragm compressor 4 is controlled to run at the lowest speed of 25HZ (maximum 50HZ). The bridging valve 6 is immediately closed, and then the M1 diaphragm compressor 1 is immediately opened. The pressure detection value of the inlet pressure transmitter 21 is compared with the pressure value of the equipment to start. If the conditions are met, the equipment is automatically started and the operating speed of the equipment is adjusted according to the pressure detection value of the inlet pressure transmitter 21. The M2 diaphragm compressor 4 is adjusted according to whether the M1 diaphragm compressor 1 is started. If the M1 diaphragm compressor 1 is started, the exhaust pressure transmitter 521 of the secondary buffer tank 52 is compared with the pressure value of the M2 diaphragm compressor 4 to start the equipment. If the conditions are met, the M2 diaphragm compressor 4 is started and the operating speed of the equipment is adjusted. In this way, a series linkage control system can be formed.

[0023] Note: If the air pressure in the air intake buffer tank 2 is high or the air supply is full, the M1 diaphragm compressor 1 will not start, the bridging valve 6 will open, and the M1 diaphragm compressor 1 will start and operate.

[0024] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A multiple membrane compressor in series control system comprising Ml membrane compressor (1) and M2 membrane compressor (4), characterized in that: The first stage cylinder gas inlet of the M1 diaphragm compressor (1) is connected with the gas outlet of the gas buffer tank (2), a gas source is introduced into the gas inlet of the gas buffer tank (2), the first stage gas assembly (3) is arranged between the first stage cylinder gas outlet of the M1 diaphragm compressor (1) and the second stage cylinder gas inlet of the M1 diaphragm compressor (1), the second stage gas assembly (5) is arranged between the second stage cylinder gas outlet of the M1 diaphragm compressor (1) and the third stage cylinder gas inlet of the M2 diaphragm compressor (4), the cross valve (6) is arranged between the gas outlet of the gas buffer tank (2) and the second stage gas assembly (5), and the third stage gas assembly (7) is connected with the third stage cylinder gas outlet of the M2 diaphragm compressor (4).

2. The diaphragm compressor multiple unit series control system according to claim 1, characterized in that: The first stage gas assembly (3) comprises a first stage cooler (31) and a first stage buffer tank (32), the gas inlet of the first stage cooler (31) is connected with the first stage cylinder gas outlet of the M1 diaphragm compressor (1), the gas outlet of the first stage cooler (31) is connected with the gas inlet of the first stage buffer tank (32), and the gas outlet of the first stage buffer tank (32) is connected with the second stage cylinder gas inlet of the M1 diaphragm compressor (1).

3. The control system for a plurality of diaphragm compressors connected in series according to claim 1, wherein: The second stage gas assembly (5) comprises a second stage cooler (51) and a second stage buffer tank (52), the gas inlet of the second stage cooler (51) is connected with the second stage cylinder gas outlet of the M1 diaphragm compressor (1), the gas outlet of the second stage cooler (51) is connected with the gas inlet of the second stage buffer tank (52), and the gas outlet of the second stage buffer tank (52) is connected with the third stage cylinder gas inlet of the M2 diaphragm compressor (4).

4. The control system for a plurality of diaphragm compressors connected in series according to claim 1, wherein: The third stage gas assembly (7) comprises a third stage cooler (71) and a third stage buffer tank (72), the gas inlet of the third stage cooler (71) is connected with the third stage cylinder gas outlet of the M2 diaphragm compressor (4), the gas outlet of the third stage cooler (71) is connected with the gas inlet of the third stage buffer tank (72), and the gas outlet of the third stage buffer tank (72) is used for discharging gas.

5. The control system for a plurality of diaphragm compressors connected in series according to claim 3, wherein: One end of the cross valve (6) is connected with the gas outlet of the gas buffer tank (2), and the other end of the cross valve (6) is connected with the gas inlet of the second stage cooler (51).

6. The control system for a plurality of diaphragm compressors connected in series according to claim 1, wherein: The gas inlet of the gas buffer tank (2) is provided with a gas inlet pressure transmitter (21) and a gas inlet pressure indication alarm (22).

7. The control system for a plurality of diaphragm compressors connected in series according to claim 3, wherein: The gas outlet of the second stage buffer tank (52) is provided with an exhaust gas pressure transmitter (521) and an exhaust gas pressure indication alarm (522).

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