Control method and device for outputting anhydrous dry stable high-pressure gas

Abstract

The invention discloses a control device for outputting anhydrous dry stable high-pressure gas, relates to the field of compressors, and solves the technical problems that high-pressure gas output by an existing compressor is unstable and the compressor is single in function. The device comprises an air filtering structure, a cooling structure and a lubricating oil conveying structure, the air filtering structure is communicated with outside air, the air filtering structure is connected with a compressor head, the compressor head is connected with an oil-gas separation structure, the oil-gas separation structure and the compressor head are both connected with the lubricating oil conveying structure, and the lubricating oil conveying structure is connected with the cooling structure. The lubricating oil conveying structure is connected with the cooling structure, the cooling structure is connected with the drying structure, and the drying structure is connected with the high-pressure gas output end. The invention further discloses a control method for outputting the anhydrous dry stable high-pressure gas. Output of high-pressure gas is controlled quickly and accurately, and the control flexibility of an existing compressor is improved.

Description

Technical Field

[0001] The present invention relates to a compressor, and more particularly to a control method and device for outputting anhydrous, dry, stable high-pressure gas. Background Art

[0002] When an oil-injected screw compressor is running, the finished gas contains a small amount of lubricating oil. This lubricating oil is consumed along with the finished gas and cannot be recovered. As the amount of finished gas increases, the amount of lubricating oil consumed also increases. When the lubricating oil in the compressor system is reduced to a certain amount, in order to ensure the stable operation of the compressor, the compressor system needs to be replenished with lubricating oil in a timely manner. However, the high-pressure gas output by the existing compressor is unstable and the compressor function is single. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies of the existing technology and provide a control method and device for outputting water-free, dry and stable high-pressure gas, so as to solve the technical problems that the high-pressure gas output by the existing compressor is unstable and the compressor has a single function.

[0004] The present invention describes a control device for outputting anhydrous, dry, stable high-pressure gas, which includes an air filtering structure, an oil-gas separation structure, a cooling structure, and a lubricating oil delivery structure. The air filtering structure is communicated with the external air, and the air filtering structure is fixedly connected to the compressor head. The compressor head is fixedly connected to the oil-gas separation structure. The oil-gas separation structure and the compressor head are both fixedly connected to the lubricating oil delivery structure. The lubricating oil delivery structure and the oil-gas separation structure are both fixedly connected to the cooling structure. The cooling structure is fixedly connected to the drying structure, and the drying structure is fixedly connected to the high-pressure gas output end.

[0005] As a further improvement, the air filtering structure includes an air filter and a brake, the air inlet of the air filter is connected to the external air, and the air outlet of the air filter is fixedly connected to the air inlet of the compressor head through the brake.

[0006] Furthermore, the oil-gas separation structure includes an air storage tank, an oil-gas separator and a minimum pressure valve. An air outlet is provided on the top of the air storage tank, a minimum pressure valve is installed in the air outlet, the oil-gas separator is installed in the air storage tank, the air inlet of the air storage tank is fixedly connected to the air outlet of the compressor head, and the oil outlet at the bottom of the air storage tank is fixedly connected to the oil inlet of the lubricating oil delivery structure.

[0007] Furthermore, the lubricating oil delivery structure includes a one-way valve, an oil filter and a ball valve;

[0008] The oil inlet of the oil filter is fixedly connected to the ball valve through a pipeline, the ball valve is fixedly connected to the oil outlet at the bottom of the air storage tank, the ball valve is fixedly connected to the oil inlet of the cooling system, the oil outlet of the oil filter is fixedly connected to the one-way valve through a pipeline, and the oil inlet of the oil filter is fixedly connected to the oil outlet of the cooling system;

[0009] The one-way valve is installed at the bottom of the compressor head, the one-way valve is fixedly connected to the air outlet of the compressor head, and the one-way valve is fixedly connected to the oil outlet of the oil filter through an oil pipeline.

[0010] Furthermore, the cooling structure includes an air cooler, an oil cooler, a cooling fan, and a condensate collector;

[0011] The air inlet of the air cooler is fixedly connected to the minimum pressure valve through an air pipeline, the air outlet of the air cooler is fixedly connected to the air inlet of the condensate collector, and the air outlet of the condensate collector is fixedly connected to the air inlet of the drying structure; the oil inlet of the oil cooler is fixedly connected to the oil outlet of the oil filter, and the oil outlet of the oil cooler is fixedly connected to the oil inlet of the oil filter; the cooling fan is installed on a side close to the air cooler and the oil cooler.

[0012] Furthermore, the condensate collector is fixedly connected to a first electronic drainer through a pipeline, and a drain port of the first electronic drainer is communicated with an external drainage pipeline.

[0013] Furthermore, the drying structure includes a dryer and a second electronic drainer, the air inlet of the second electronic drainer is fixedly connected to the air outlet of the condensation collector, the air outlet of the second electronic drainer is fixedly connected to the air inlet of the dryer, the air outlet of the dryer is fixedly connected to the high-pressure gas output end, and the drain outlet of the second electronic drain is connected to an external drainage pipe.

[0014] A control method for outputting anhydrous, dry, stable high-pressure gas, the method comprising: according to the above-mentioned control device for outputting anhydrous, dry, stable high-pressure gas, external air is delivered into a compressor head through an air filtering structure to form compressed air, lubricating oil is delivered into the compressor head through a lubricating oil delivery structure, the compressed air is cooled by the lubricating oil and the lubricating oil and compressed air are mixed to form a mixture, the mixture is delivered into an oil-gas separation structure for separation, the separated compressed gas is input into the air inlet of the cooling structure, the separated lubricating oil is input into the oil inlet of the cooling structure, a temperature adjustment mechanism is triggered according to the separated compressed gas and the separated lubricating oil to cool the separated compressed gas and the separated lubricating oil, the cooled compressed gas is delivered to a drying structure to output target high-pressure gas, and the cooled lubricating oil is delivered back to the lubricating oil delivery structure.

[0015] Furthermore, the temperature adjustment mechanism is to obtain the compressed gas temperature after separation and the real-time temperature of the lubricating oil after separation, subtract the compressed gas temperature from a preset gas temperature threshold to obtain a gas temperature difference, and compare the gas temperature difference with a preset first standard gas temperature difference. When the gas temperature difference is greater than the first standard gas temperature difference, it is determined that the compressed gas temperature is too high.

[0016] subtracting the real-time lubricating oil temperature from a preset lubricating oil temperature threshold to obtain a lubricating oil temperature difference, comparing the lubricating oil temperature difference with a preset first standard lubricating oil temperature difference, and determining that the real-time lubricating oil temperature is too high when the lubricating oil temperature difference is greater than the first standard lubricating oil temperature difference;

[0017] When it is determined at the same time that the compressed gas temperature and the lubricating oil real-time temperature are too high, the power of the cooling fan is increased to a first power to reduce the compressed gas temperature and the lubricating oil real-time temperature.

[0018] Furthermore, when the gas temperature difference is greater than a preset second standard gas temperature difference or the real-time temperature of the lubricating oil is greater than a preset second standard lubricating oil temperature difference, the power of the cooling fan is increased to a second power.

[0019] Beneficial effects

[0020] The advantages of the present invention are:

[0021] The present invention provides an air filtering structure, a cooling structure and a lubricating oil delivery structure. The air filtering structure is communicated with the external air, the air filtering structure is fixedly connected to the compressor head, the compressor head is fixedly connected with an oil-gas separation structure, the oil-gas separation structure and the compressor head are both fixedly connected to the lubricating oil delivery structure, the lubricating oil delivery structure is fixedly connected to the cooling structure, the cooling structure is fixedly connected to the drying structure, and the drying structure is fixedly connected to the high-pressure gas output end, thereby converting the external air into the target high-pressure gas, improving the control flexibility of the existing compressor, realizing fast and accurate control of the output of the high-pressure gas, and realizing precise control of the temperature of the gas through the temperature adjustment mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the device for outputting anhydrous dry high-pressure gas according to the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the device for outputting anhydrous dry high-pressure gas of the present invention.

[0024] Among them: 1-air filter, 2-check valve, 3-brake, 4-compressor head, 5-oil-gas separator, 6-minimum pressure valve, 7-air storage tank, 8-ball valve, 9-oil filter, 10-air cooler, 11-oil cooler, 12-cooling fan, 13-condensate collector, 14-first electronic drain, 15-second electronic drain, 16-dryer, 18-ventilation plug, 19-controller, 20-emergency button, 21-air outlet valve, 22-condensate outlet. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the embodiments, but this does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0026] See Figure 1-Figure 2 The present invention provides a control device for outputting anhydrous, dry, stable high-pressure gas. The device includes an air filtering structure, a cooling structure, and a lubricating oil delivery structure. The air filtering structure is communicated with the external air, the air filtering structure is fixedly connected to the compressor head 4, the compressor head 4 is fixedly connected to an oil-gas separation structure, the oil-gas separation structure and the compressor head 4 are both fixedly connected to the lubricating oil delivery structure, the lubricating oil delivery structure is fixedly connected to the cooling structure, the cooling structure is fixedly connected to the drying structure, and the drying structure is fixedly connected to the high-pressure gas output end.

[0027] The air filtration structure includes an air filter 1 and a brake 3. The air inlet of the air filter 1 is connected to the outside air, and the air outlet of the air filter 1 is fixedly connected to the air inlet of the compressor head 4 through the brake 3. The air filter 1 filters the outside air. The brake 3 is mainly used to control airflow, adjust load, or provide emergency protection.

[0028] The oil-gas separation structure includes an air tank 7, an oil-gas separator 5, and a minimum pressure valve 6. An air outlet is provided at the top of the air tank 7, in which a minimum pressure valve 6 is installed. The oil-gas separator 5 is installed in the air tank 7. The air inlet of the air tank 7 is fixedly connected to the air outlet of the compressor head 4, and the air outlet of the air tank 7 is fixedly connected to the air inlet of the oil-gas separation structure. The air tank 7 is used to store compressed gas, and the oil-gas separator 5 is used to separate compressed air and lubricating oil. The minimum pressure valve 6 maintains the minimum pressure in the air tank 7. When the gas pressure in the air tank 7 is lower than the minimum pressure value preset by the minimum pressure valve 6, the minimum pressure valve 6 closes, thereby maintaining the minimum pressure of the gas in the air tank 7.

[0029] The lubricating oil delivery structure includes a check valve 2, an oil filter 9, and a ball valve 8. The oil filter 9 is fixedly connected to the ball valve 8 via a pipe. The ball valve 8 is fixedly connected to the oil inlet of the oil filter 9, which is in turn fixedly connected to the oil inlet of the cooling system. The oil outlet of the oil filter 9 is fixedly connected to the check valve 2 via a pipe. The oil inlet of the oil filter 9 is also fixedly connected to the oil outlet of the cooling system. The check valve 2 prevents backflow of lubricating oil. The ball valve 8 controls the flow of lubricating oil between the air tank 7 and the oil filter 9.

[0030] The one-way valve 2 is installed at the bottom of the compressor head 4. The one-way valve 2 is fixedly connected to the air outlet of the compressor head 4. The one-way valve 2 is fixedly connected to the oil outlet of the oil filter 9 through an oil pipeline.

[0031] The cooling structure includes an air cooler 10, an oil cooler 11, a cooling fan 12, and a condensate collector 13;

[0032] The air inlet of air cooler 10 is fixedly connected to minimum pressure valve 6 via an air pipeline. The air outlet of air cooler 10 is fixedly connected to the air inlet of condensate collector 13, and the air outlet of condensate collector 13 is fixedly connected to the air inlet of the drying structure. The oil inlet of oil cooler 11 is fixedly connected to the oil outlet of oil filter 9, and the oil outlet of oil cooler 11 is fixedly connected to the oil inlet of oil filter 9. Cooling fan 12 is installed on one side near air cooler 10 and oil cooler 11. Air cooler 10 is used to further cool the compressed gas after separation, oil cooler 11 is used to cool the separated lubricating oil, and condensate collector 13 is used to collect condensed water after cooling the compressed gas.

[0033] The condensate collector 13 is fixedly connected to a first electronic drain 14 via a pipe, and a drain port of the first electronic drain 14 is communicated with an external drainage pipe.

[0034] The drying structure includes a dryer 16 and a second electronic drain 15. The air inlet of the second electronic drain 15 is fixedly connected to the air outlet of the condensate collector 13. The air outlet of the second electronic drain 15 is also fixedly connected to the air inlet of the dryer 16. The air outlet of the dryer 16 is fixedly connected to the high-pressure gas output terminal. The drain outlet of the second electronic drain 15 is connected to an external drainage pipe. Both the first electronic drain 14 and the second electronic drain 15 are used to automatically drain the condensate generated by the cooled compressed gas. The dryer 16 is used to dry the cooled compressed gas.

[0035] A control method for outputting anhydrous, dry, stable high-pressure gas, the method comprising: according to the above-mentioned control device for outputting anhydrous, dry, stable high-pressure gas, external air is delivered into the compressor head 5 through an air filtering structure to form compressed air, lubricating oil is delivered into the compressor head 5 through a lubricating oil delivery structure, the compressed air is cooled by the lubricating oil and the lubricating oil and compressed air are mixed to form a mixture, the mixture is delivered into an oil-gas separation structure for separation, the separated compressed gas is input into the air inlet of the cooling structure, the separated lubricating oil is input into the oil inlet of the cooling structure, a temperature adjustment mechanism is triggered according to the separated compressed gas and the separated lubricating oil to cool the separated compressed gas and the separated lubricating oil, the cooled compressed gas is delivered to the drying structure to output the target high-pressure gas, and the cooled lubricating oil is delivered back to the lubricating oil delivery structure.

[0036] The temperature regulation mechanism is to obtain the compressed gas temperature after separation and the real-time temperature of the lubricating oil after separation, subtract the compressed gas temperature from a preset gas temperature threshold to obtain a gas temperature difference, and compare the gas temperature difference with a preset first standard gas temperature difference. When the gas temperature difference is greater than the first standard gas temperature difference, it is determined that the compressed gas temperature is too high;

[0037] Subtracting the real-time lubricating oil temperature from a preset lubricating oil temperature threshold to obtain a lubricating oil temperature difference, and comparing the lubricating oil temperature difference with a preset first standard lubricating oil temperature difference. When the lubricating oil temperature difference is greater than the first standard lubricating oil temperature difference, it is determined that the real-time lubricating oil temperature is too high;

[0038] When it is determined at the same time that the compressed gas temperature and the lubricating oil real-time temperature are too high, the power of the cooling fan 12 is increased to a first power to reduce the compressed gas temperature and the lubricating oil real-time temperature.

[0039] When the gas temperature difference is greater than a preset second standard gas temperature difference or the lubricating oil real-time temperature is greater than a preset second standard lubricating oil temperature difference, the power of cooling fan 12 is increased to a second power. The second standard gas temperature difference is set to be greater than the first standard gas temperature difference, and the second power is set to be greater than the first power to quickly cool the compressed gas temperature after separation and the real-time lubricating oil temperature after separation.

[0040] like Figure 1 As shown, the compressor is housed in a soundproofed enclosure and is available in both air-cooled and water-cooled models. Controlled by a computer controller, the compressor is housed behind a panel containing fuses, transformers, and relays. The electronic control module is mounted on the right door. Its built-in VSD (Variable Speed ​​Drive) technology reflects air usage and automatically adjusts the motor speed based on compressed air demand.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A control device for outputting anhydrous, dry, stable high-pressure gas, characterized in that: The device comprises an air filtering structure, an oil-gas separation structure, a cooling structure and a lubricating oil delivery structure, wherein the air filtering structure is communicated with the outside air, the air filtering structure is connected to a compressor head (4), the compressor head (4) is connected to the oil-gas separation structure, the oil-gas separation structure and the compressor head (4) are both connected to the lubricating oil delivery structure, the lubricating oil delivery structure and the oil-gas separation structure are both connected to the cooling structure, the cooling structure is connected to a drying structure, and the drying structure is connected to a high-pressure gas output end.

2. A control device for outputting anhydrous, dry, stable high-pressure gas according to claim 1, characterized in that: The air filtration structure comprises an air filter (1) and a brake (3); the air inlet of the air filter (1) is in communication with the outside air; and the air outlet of the air filter (1) is fixedly connected to the air inlet of the compressor head (4) via the brake (3).

3. The control device for outputting anhydrous, dry, stable high-pressure gas according to claim 1, characterized in that: The oil-gas separation structure comprises an air storage tank (7), an oil-gas separator (5) and a minimum pressure valve (6); an air outlet is provided on the top of the air storage tank (7); the minimum pressure valve (6) is installed in the air outlet; the oil-gas separator (5) is installed in the air storage tank (7); the air inlet of the air storage tank (7) is fixedly connected to the air outlet of the compressor head (4); and the oil outlet at the bottom of the air storage tank (7) is fixedly connected to the oil inlet of the lubricating oil delivery structure.

4. A control device for outputting anhydrous, dry, stable high-pressure gas according to claim 3, characterized in that: The lubricating oil delivery structure comprises a one-way valve (2), an oil filter (9) and a ball valve (8); The oil inlet of the oil filter (9) is fixedly connected to the ball valve (8) through a pipeline, the ball valve (8) is fixedly connected to the oil outlet at the bottom of the air storage tank (7), the ball valve (8) is fixedly connected to the oil inlet of the cooling system, the oil outlet of the oil filter (9) is fixedly connected to the one-way valve (2) through a pipeline, and the oil inlet of the oil filter (9) is fixedly connected to the oil outlet of the cooling system; The one-way valve (2) is installed at the bottom of the compressor head (4), the one-way valve (2) is fixedly connected to the air outlet of the compressor head (4), and the one-way valve (2) is fixedly connected to the oil outlet of the oil filter (9) through an oil pipeline.

5. The control device for outputting anhydrous dry stable high-pressure gas according to claim 3, characterized in that: The cooling structure includes an air cooler (10), an oil cooler (11), a cooling fan (12), and a condensate collector (13); The air inlet of the air cooler (10) is fixedly connected to the minimum pressure valve (6) through an air pipeline, the air outlet of the air cooler (10) is fixedly connected to the air inlet of the condensate collector (13), and the air outlet of the condensate collector (13) is fixedly connected to the air inlet of the drying structure; the oil inlet of the oil cooler (11) is fixedly connected to the oil outlet of the oil filter (9), and the oil outlet of the oil cooler (11) is fixedly connected to the oil inlet of the oil filter (9); the cooling fan (12) is installed on a side close to the air cooler (10) and the oil cooler (11).

6. The control device for outputting anhydrous, dry, stable high-pressure gas according to claim 5, characterized in that: The condensate collector (13) is fixedly connected to a first electronic drainer (14) via a pipeline, and a drainage port of the first electronic drainer (14) is communicated with an external drainage pipeline.

7. The control device for outputting anhydrous, dry, stable high-pressure gas according to claim 1, characterized in that: The drying structure includes a dryer (16) and a second electronic drainer (15), the air inlet of the second electronic drainer (15) is fixedly connected to the air outlet of the condensate collector (13), the air outlet of the second electronic drainer (15) is fixedly connected to the air inlet of the dryer (16), the air outlet of the dryer (16) is fixedly connected to the high-pressure gas output end, and the drain outlet of the second electronic drainer (15) is communicated with an external drainage pipe.

8. A control method for outputting anhydrous, dry, stable high-pressure gas, characterized in that: The method includes, according to a control device for outputting anhydrous, dry, stable high-pressure gas as described in any one of claims 1 to 7, delivering external air into a compressor head (5) through an air filtering structure to form compressed air, delivering lubricating oil into the compressor head (5) through a lubricating oil delivery structure, cooling the compressed air by the lubricating oil and mixing the lubricating oil and compressed air to form a mixture, delivering the mixture into an oil-gas separation structure for separation, inputting the separated compressed gas into the air inlet of the cooling structure, inputting the separated lubricating oil into the oil inlet of the cooling structure, triggering a temperature adjustment mechanism according to the separated compressed gas and the separated lubricating oil to cool the separated compressed gas and the separated lubricating oil, delivering the cooled compressed gas to a drying structure to output target high-pressure gas, and delivering the cooled lubricating oil back to the lubricating oil delivery structure.

9. The control method for outputting anhydrous dry stable high-pressure gas according to claim 1, characterized in that: The temperature adjustment mechanism is to obtain the compressed gas temperature after separation and the real-time temperature of the lubricating oil after separation, subtract the compressed gas temperature from a preset gas temperature threshold to obtain a gas temperature difference, and compare the gas temperature difference with a preset first standard gas temperature difference. When the gas temperature difference is greater than the first standard gas temperature difference, it is determined that the compressed gas temperature is too high; subtracting the real-time lubricating oil temperature from a preset lubricating oil temperature threshold to obtain a lubricating oil temperature difference, comparing the lubricating oil temperature difference with a preset first standard lubricating oil temperature difference, and determining that the real-time lubricating oil temperature is too high when the lubricating oil temperature difference is greater than the first standard lubricating oil temperature difference; When it is determined at the same time that the compressed gas temperature and the lubricating oil real-time temperature are too high, the power of the cooling fan (12) is increased to a first power to reduce the compressed gas temperature and the lubricating oil real-time temperature.

10. A control method for outputting anhydrous, dry, stable high-pressure gas according to claim 9, characterized in that: When the gas temperature difference is greater than a preset second standard gas temperature difference or the lubricating oil real-time temperature is greater than a preset second standard lubricating oil temperature difference, the power of the cooling fan (12) is increased to a second power.

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