A gas flow control system

Abstract

This invention provides a gas flow control system, belonging to the field of air compressor technology. It includes a first intake pipe, a coarse adjustment valve, and a control unit. A second intake pipe is connected to one side of the first intake pipe, and a fine adjustment valve is connected to the second intake pipe. The coarse and fine adjustment valves are electrically connected to the control unit. This invention, by setting up a first and a second intake pipe, and respectively installing a coarse and fine adjustment valves on the two intake pipes, allows the coarse adjustment valve to be quickly opened or closed by the control unit, achieving rapid regulation of large flow rates. The fine adjustment valve, on the other hand, is adjusted in real-time by the control unit according to the power of the air compressor, achieving proportional real-time regulation of the airflow. This satisfies the air consumption changes caused by power variations in the air compressor, effectively reducing the problem of oil-gas separator failure due to abnormal pressure.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor technology, specifically referring to a gas flow control system. Background Technology

[0002] The intake system of a screw air compressor is the "gateway" to the entire compression process, and its core function is to provide clean and adequate air to the main unit. This system mainly consists of components such as an air filter and an intake valve. During operation, ambient air first passes through the air filter to remove dust and impurities, ensuring that the air entering the main unit is clean and effectively preventing internal wear. Subsequently, the clean air enters the compression chamber of the main unit through the intake valve.

[0003] The intake volume of the existing screw air compressor intake system is fixed and cannot be adjusted. However, different screw air compressors require different intake volumes for different power levels. If the ratio of intake volume to air consumption is not matched, it will cause the pressure inside the oil-gas separator to rise abnormally. Excessive pressure difference will cause the oil-gas separator core to break down and fail, which will lead to the safety risks of oil spillage and deflagration. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a gas flow control system to at least partially solve the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model is as follows: This utility model proposes a gas flow control system, including: The first intake pipe has an intake end and an air supply end at its two ends, respectively. The intake end of the first intake pipe is connected to a coarse adjustment valve, and the air supply end of the first intake pipe is connected to an air compressor. Control unit, wherein the coarse adjustment valve is electrically connected to the control unit; The first intake pipe is connected to a second intake pipe on one side, and a fine-tuning valve is connected to the second intake pipe. The fine-tuning valve is electrically connected to the control unit. A first flow meter is connected to the air supply end of the first air intake pipe. The first flow meter is configured to monitor the gas flow rate at the air supply end of the first air intake pipe in real time. A second flow meter is connected to the second air intake pipe. The second flow meter is configured to monitor the gas flow rate in the second air intake pipe in real time.

[0006] Furthermore, a cooling unit is connected to the second air intake pipe, and the cooling unit is located between the fine-tuning valve and the second flow meter, so that the air entering through the fine-tuning valve can be cooled.

[0007] Furthermore, the cooling unit includes a connecting pipe and a plunger. The two ends of the connecting pipe are respectively connected to the fine-tuning valve and the second flow meter. The plunger is located inside the connecting pipe. The connecting pipe and the plunger are coaxial with each other, and an annular airflow cavity for airflow is provided between the connecting pipe and the plunger. An annular cover is fitted over the outside of the connecting pipe, and a cooling chamber for storing coolant is provided between the connecting pipe and the annular cover.

[0008] Furthermore, the top two sides of the annular cover are respectively connected to a water inlet pipe and a water outlet pipe, which are connected to a coolant circulation and conveying device to enable the coolant in the cooling chamber to circulate.

[0009] Furthermore, a sliding plug is slidably disposed inside the cooling chamber, and a spring is provided at the bottom of the cooling chamber. The sliding plug is connected to the spring, so that the spring can apply an upward sliding force to the sliding plug.

[0010] Furthermore, the airflow cavity is provided with helical blades, forming a helical channel within the airflow cavity.

[0011] Furthermore, a shut-off valve is connected to the air supply end of the first air intake pipe, and the shut-off valve is located between the air supply end of the first air intake pipe and the air compressor.

[0012] Furthermore, both the coarse adjustment valve and the fine adjustment valve are connected to air filters for filtering air at their air inlet ends. Beneficial effects

[0013] By setting up a first intake pipe and a second intake pipe, and installing a coarse adjustment valve and a fine adjustment valve on each intake pipe respectively, the coarse adjustment valve is controlled by the control unit to quickly open or close, achieving rapid regulation of large flow rates; while the fine adjustment valve is adjusted by the control unit in real time according to the power of the air compressor, achieving real-time regulation of airflow in a proportional manner, in order to meet the air consumption changes caused by power changes of the air compressor, effectively reducing the problem of oil-gas separator core failure in the oil-gas tank due to abnormal pressure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a gas flow control system proposed in an embodiment of the present invention; Figure 2 This is a schematic diagram of the signal connection of the control unit in a gas flow control system according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a cooling unit in a gas flow control system according to an embodiment of the present invention; Figure 4This is a cross-sectional view of a cooling unit in a gas flow control system according to an embodiment of the present invention.

[0015] Among them, 1. First air intake pipe; 11. Second air intake pipe; 2. Coarse adjustment valve; 3. Fine adjustment valve; 4. Control unit; 5. First flow meter; 6. Second flow meter; 7. Cooling unit; 71. Connecting pipe; 72. Plunger; 73. Annular cover; 731. Cooling chamber; 74. Water inlet pipe; 75. Drain pipe; 76. Spiral blade; 77. Sliding plug; 78. Spring; 701. Airflow chamber; 8. Shut-off valve; 9. Air filter.

[0016] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0018] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0019] Combination Figure 1 As shown, this utility model embodiment provides a gas flow control system, including a first air inlet pipe 1, a second air inlet pipe 11, a coarse adjustment valve 2, a fine adjustment valve 3, and a control unit 4.

[0020] The two ends of the first air intake pipe 1 are respectively set as the air intake end and the air supply end. The coarse adjustment valve 2 is connected to the air intake end of the first air intake pipe 1, and the air supply end of the first air intake pipe 1 is connected to the air compressor. Under the negative pressure suction generated by the operation of the air compressor, the air compressor can draw in air through the first air intake pipe 1.

[0021] Thus, when the air compressor is running, the coarse adjustment valve 2 is opened, and the negative pressure suction generated by itself causes the air compressor to draw in air through the first air intake pipe 1. After being compressed by the air compressor, the air is delivered to the air storage tank for storage.

[0022] Furthermore, one end of the second intake pipe 11 is connected to the first intake pipe 1, and the fine-tuning valve 3 is connected to the other end of the second intake pipe 11. The second intake pipe 11 can supplement the intake volume of the first intake pipe 1, thereby increasing the amount of air delivered from the first intake pipe 1 to the air compressor.

[0023] The fine-tuning valve 3 is configured to adjust the valve core opening amplitude by electric drive, that is, by adjusting the valve core opening amplitude of the fine-tuning valve 3, the gas flow rate supplied from the second air intake pipe 11 to the first air intake pipe 1 is adjusted.

[0024] Furthermore, both the coarse adjustment valve 2 and the fine adjustment valve 3 are electric ball valves, and both are connected to the control unit 4 via signals, enabling the control unit 4 to control the operation of the coarse adjustment valve 2 and the fine adjustment valve 3 according to the preset control logic.

[0025] The coarse adjustment valve 2 can be controlled by the control unit 4 to quickly open to the maximum extent or close, realizing the rapid opening or closing of a large flow rate. The fine adjustment valve 3 can be controlled by the control unit 4 to adjust the opening extent in real time proportionally according to the power of the air compressor, realizing the proportional real-time control of the airflow to meet the air consumption changes caused by the power change of the air compressor.

[0026] Thus, when the air compressor is running, the coarse adjustment valve 2 is opened to its maximum extent, and the intake volume of the coarse adjustment valve 2 is kept constant. Then, according to the change in the required intake volume of the air compressor, the valve core opening range of the fine adjustment valve 3 is adjusted proportionally and in real time. By adjusting the fine adjustment valve 3, the air flow rate supplemented by the second intake pipe 11 to the first intake pipe 1 can be adjusted in real time, so that the total air flow rate of the first intake pipe 1 meets the needs of the change in the intake volume of the air compressor.

[0027] Combination Figure 1 and Figure 2 As shown, the first air inlet pipe 1 is connected to the air supply end of the first flow meter 5, and the second air inlet pipe 11 is connected to the second flow meter 6. Both the first flow meter 5 and the second flow meter 6 are connected to the control unit 4 via signal.

[0028] The gas flow rate at the air supply end of the first air inlet pipe 1 is monitored in real time by the first flow meter 5. Since the air supply end of the first air inlet pipe 1 is connected to the air compressor, the gas flow rate at the air supply end of the first air inlet pipe 1 is the actual air intake of the air compressor. Based on the real-time monitoring data of the first flow meter 5, it is determined whether the actual air intake of the air compressor meets the required air intake of the air compressor.

[0029] The second flow meter 6 can monitor the gas flow rate in the second air inlet pipe 11 in real time. The second air inlet pipe 11 serves as a supplementary air intake. Therefore, the actual gas flow rate of the second air inlet pipe 11 is the gas flow rate that needs to be increased proportionally. Based on the real-time monitoring data of the second flow meter 6, it is determined whether the actual supplementary air intake volume of the second air inlet pipe 11 is consistent with the gas flow rate that needs to be increased proportionally.

[0030] The control unit 4 obtains the actual gas flow rate in the first intake pipe 1 and the second intake pipe 11 in real time through the monitoring data of the first flow meter 5 and the second flow meter 6, and adjusts the fine-tuning valve 3 in real time according to the monitoring data to ensure that the actual intake volume of the air compressor meets the requirements.

[0031] Combination Figure 1 As shown, the air supply end of the first air intake pipe 1 is connected to a shut-off valve 8, and the shut-off valve 8 is located between the air supply end of the first air intake pipe 1 and the air compressor. When the air compressor stops, the shut-off valve 8 can close to prevent compressed air from flowing back.

[0032] Furthermore, both the coarse adjustment valve 2 and the fine adjustment valve 3 are connected to air filters 9 at their inlet ends. The air drawn in by the air compressor is filtered by the air filters 9 to prevent impurities from being drawn in.

[0033] Combination Figure 3 and Figure 4 As shown, a cooling unit 7 is connected to the second intake pipe 11, and the cooling unit 7 is located between the fine-tuning valve 3 and the second flow meter 6. Since the second intake pipe 11 is for supplementary air intake, the intake volume is small. Therefore, in a high-temperature environment, the cooling unit 7 is used to cool the air entering through the second intake pipe 11 to neutralize the air temperature in the first intake pipe 1, thus preventing the air compressor from inhaling high-temperature, low-density air in a high-temperature environment.

[0034] In a specific embodiment, the cooling unit 7 includes a connecting pipe 71 and a plunger 72. The two ends of the connecting pipe 71 are respectively connected to the fine-tuning valve 3 and the second flow meter 6. The plunger 72 is located inside the connecting pipe 71. The connecting pipe 71 and the plunger 72 are coaxial with each other, and an annular airflow cavity 701 for airflow is provided between the connecting pipe 71 and the plunger 72. When the air passes through the connecting pipe 71, it is dispersed into the annular airflow cavity 701. At this time, the thickness of the airflow channel is small, which is conducive to the cooling of the air.

[0035] Furthermore, an annular cover 73 is fitted around the outside of the connecting pipe 71, and a cooling chamber 731 for storing coolant is provided between the connecting pipe 71 and the annular cover 73. At this time, the coolant and the air exchange heat through the pipe wall of the connecting pipe 71. The top two sides of the annular cover 73 are respectively connected to a water inlet pipe 74 and a drain pipe 75. The water inlet pipe 74 and the drain pipe 75 are connected to a coolant circulation conveying device, so that the coolant in the cooling chamber 731 can circulate. The circulating coolant is used to cool the air in the annular airflow chamber 701, so that the air is in a low temperature state, thereby neutralizing the high temperature air in the first air inlet pipe 1.

[0036] Furthermore, a spiral blade 76 is provided inside the airflow cavity 701, forming a spiral channel inside the airflow cavity 701. Air flows along the spiral channel, increasing the airflow path, thereby enabling the air to be fully cooled and cooled down, forming low-temperature air.

[0037] Combination Figure 3 and Figure 4 As shown, a sliding plug 77 is slidably disposed inside the cooling chamber 731, and a spring 78 is provided at the bottom of the cooling chamber 731. The sliding plug 77 is connected to the spring 78, so that the spring 78 can apply an upward sliding force to the sliding plug 77. The sliding plug 77 is located below the connection between the water inlet pipe 74 and the drain pipe 75.

[0038] When the coolant circulates in the cooling chamber 731, if the inlet flow rate of the water inlet pipe 74 is greater than the return flow rate of the drain pipe 75, the pressure in the cooling chamber 731 increases, and the sliding plug 77 is pushed downward. At this time, the effective volume of the cooling chamber 731 increases, and correspondingly, the heat exchange area between the coolant and the air increases, the cooling efficiency improves, and the air is cooled down to a greater extent. If the inlet flow rate of the water inlet pipe 74 is less than the return flow rate of the drain pipe 75, the pressure in the cooling chamber 731 decreases, and the sliding plug 77 is pushed upward by the spring 78. At this time, the effective volume of the cooling chamber 731 decreases, and correspondingly, the heat exchange area between the coolant and the air decreases, the cooling efficiency decreases, and the air is cooled down to a lesser extent.

[0039] In this way, the degree of air cooling can be adjusted in real time according to the outside air temperature, so that the low temperature air in the second air intake pipe 11 can neutralize the high temperature air in the first air intake pipe 1 to the specified temperature.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A gas flow control system, characterized by, include: The first air intake pipe (1) has an air intake end and an air supply end at its two ends respectively. The air intake end of the first air intake pipe (1) is connected to a coarse adjustment valve (2), and the air supply end of the first air intake pipe (1) is connected to an air compressor. Control unit (4), the coarse adjustment valve (2) is electrically connected to the control unit (4); Among them, a second air intake pipe (11) is connected to one side of the first air intake pipe (1), and a fine-tuning valve (3) is connected to the second air intake pipe (11). The fine-tuning valve (3) is electrically connected to the control unit (4). A first flow meter (5) is connected to the air supply end of the first air inlet pipe (1). The first flow meter (5) is configured to monitor the gas flow rate at the air supply end of the first air inlet pipe (1) in real time. A second flow meter (6) is connected to the second air inlet pipe (11). The second flow meter (6) is configured to monitor the gas flow rate in the second air inlet pipe (11) in real time.

2. The gas flow control system of claim 1, wherein: A cooling unit (7) is connected to the second air inlet pipe (11), and the cooling unit (7) is located between the fine-tuning valve (3) and the second flow meter (6), so that the air entering through the fine-tuning valve (3) can be cooled.

3. The gas flow control system according to claim 2, characterized in that: The cooling unit (7) includes a connecting pipe (71) and a plunger (72). The two ends of the connecting pipe (71) are connected to the fine-tuning valve (3) and the second flow meter (6) respectively. The plunger (72) is located inside the connecting pipe (71). The connecting pipe (71) and the plunger (72) are coaxial with each other, and an annular airflow cavity (701) for airflow is provided between the connecting pipe (71) and the plunger (72). The outer side of the connecting pipe (71) is fitted with an annular cover (73), and a cooling chamber (731) for storing coolant is provided between the connecting pipe (71) and the annular cover (73).

4. The gas flow control system according to claim 3, characterized in that: The top two sides of the annular cover (73) are respectively connected to a water inlet pipe (74) and a drain pipe (75), which are connected to a coolant circulation conveying device so that the coolant in the cooling chamber (731) can circulate.

5. The gas flow control system according to claim 4, characterized in that: A sliding plug (77) is slidably disposed inside the cooling chamber (731), and a spring (78) is provided at the bottom of the cooling chamber (731). The sliding plug (77) is connected to the spring (78), so that the spring (78) can apply an upward sliding force to the sliding plug (77).

6. The gas flow control system according to claim 3, characterized in that: The airflow cavity (701) is provided with a spiral blade (76) to form a spiral channel inside the airflow cavity (701).

7. The gas flow control system according to claim 1, characterized in that: The first air intake pipe (1) is connected to a shut-off valve (8) at the air supply end, and the shut-off valve (8) is located between the air supply end of the first air intake pipe (1) and the air compressor.

8. The gas flow control system according to claim 1, characterized in that: Both the coarse adjustment valve (2) and the fine adjustment valve (3) are connected to air filters (9) for filtering air.

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