Pressure stabilizing and regulating device for compressed air

Abstract

The utility model relates to the field of pipeline systems for gas distribution, and discloses a compressed air pressure stabilizing and regulating device, which is characterized in that one end of a gas inlet three-way valve is connected with an air compressor, and the other two ends of the gas inlet three-way valve are respectively connected with a main gas storage tank and a standby gas storage tank; when the air pressure in the main air storage tank is larger than a threshold value, the air inlet three-way valve and the air outlet three-way valve enter a first working condition, the air compressor is connected with the main air storage tank and the standby air storage tank, only the main air storage tank is connected with air using equipment, and when the air pressure in the main air storage tank is smaller than the threshold value, the air compressor enters a second working condition. And the air inlet three-way valve and the air outlet three-way valve enter a second working condition, the air compressor is only connected with the main air storage tank, only the standby air storage tank is connected with the air consumption equipment, the standby air storage tank is additionally arranged on the original feeding system, and the air pressure balance of the feeding system is maintained through storage and discharge of compressed air by the standby air storage tank.

Description

Technical Field

[0001] The utility model relates to the field of pipeline systems for gas distribution, in particular to a compressed air pressure stabilizing and regulating device. Background Art

[0002] In the existing feeding system, there is a common problem of large gas consumption and unbalanced gas consumption in gas-consuming equipment. This unbalanced gas demand often leads to the overall gas supply of the system being unable to meet actual demand, especially during peak hours. The phenomenon of insufficient gas supply in the system is particularly prominent. Therefore, a compressed air pressure stabilizing and regulating device is proposed. By adding a spare gas storage tank, the air pressure balance of the feeding system is maintained. Utility Model Content

[0003] The purpose of the utility model is to provide a compressed air pressure stabilizing and regulating device, which aims to solve the problem of unbalanced overall air pressure in the feeding system caused by unbalanced air consumption of air-consuming equipment.

[0004] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0005] and a plurality of air intake and outlet valves are installed in the air intake and outlet ports, respectively. The air intake and outlet valves are connected to the air compressor at one end and the air intake and outlet valves are connected to the air compressor at the other end. The air outlet valves are connected to the air compressor at one end and the air intake and outlet valves are connected to the air compressor at the other end.

[0006] Furthermore, the air intake three-way valve includes an air intake valve body, a first guide column, a first piston, a first gas interface, a second gas interface, and a third gas interface. There is a cavity inside the air intake valve body of the air intake three-way valve, and the first piston is tightly fitted with the cavity. The first gas interface, the second gas interface, and the third gas interface are arranged in sequence from bottom to top at three different heights of the air intake valve body, and the first gas interface, the second gas interface, and the third gas interface are connected to the cavity; the air outlet three-way valve includes an air outlet valve body, a second guide column, a second piston, a fourth gas interface, a fifth gas interface, and a sixth gas interface. The air outlet three-way valve has the same structure as the air intake three-way valve; when the air intake three-way valve and the air outlet three-way valve enter the first working condition, the air inlet The first piston in the air three-way valve is located above the third gas interface, the first gas interface, the second gas interface and the third gas interface are connected inside the cavity of the air inlet valve body, the second piston in the air outlet three-way valve is located between the fifth gas interface and the sixth gas interface, and the fourth gas interface and the fifth gas interface are connected inside the cavity of the air outlet valve body; when the air inlet three-way valve and the air outlet three-way valve enter the second working condition, the first piston in the air inlet three-way valve is located between the second gas interface and the third gas interface, the first gas interface and the second gas interface are connected inside the cavity of the air inlet valve body, the second piston of the air outlet three-way valve is located below the fifth gas interface, and the fifth gas interface and the sixth gas interface are connected inside the cavity of the air outlet valve body.

[0007] Furthermore, a coaxial first upper spring is fixed between the upper end surface of the first piston and the upper end surface of the internal cavity of the intake valve body, and a coaxial first lower spring is fixed between the lower end surface of the first piston and the lower end surface of the internal cavity of the intake valve body; a coaxial second upper spring is fixed between the upper end surface of the second piston and the upper end surface of the internal cavity of the outlet valve body, and a coaxial second lower spring is fixed between the lower end surface of the second piston and the lower end surface of the internal cavity of the outlet valve body.

[0008] Furthermore, a first guide post is provided at the axis of the first piston, the first upper spring and the first lower spring, and the first guide post respectively passes through the central axis of the first piston, the first upper spring and the first lower spring and is fixed to the upper and lower ends of the intake valve body; a second guide post is provided at the axis of the second piston, the second upper spring and the second lower spring, and the second guide post respectively passes through the central axis of the second piston, the second upper spring and the second lower spring and is fixed to the upper and lower ends of the outlet valve body.

[0009] Furthermore, the air inlet end of the spare air storage tank is fixedly connected to a pressure sensor, and the air outlet end of the spare air storage tank is fixedly connected to a flow sensor.

[0010] Furthermore, the first gas interface, the second gas interface and the third gas interface are all provided with annular grooves on the air inlet valve body, and each groove is embedded with a sealing ring, which is used to seal the gas transport pipeline and the air inlet three-way valve connected to the gas interface; the fourth gas interface, the fifth gas interface and the sixth gas interface are all provided with annular grooves on the air outlet valve body, and each groove is embedded with a sealing ring, which is used to seal the gas transport pipeline and the air outlet three-way valve connected to the gas interface.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] A compressed air pressure stabilizing and regulating device is provided. By adding a spare air storage tank, when the air compressor is running at low load, the air compressor will inflate the spare air storage tank; when the air compressor is running at high load, the spare air storage tank will replace the original air storage tank to release air. The storage and discharge of compressed air in the spare air storage tank can maintain the air pressure balance of the feeding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0014] Figure 1 A schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a simplified diagram of the first working condition of the embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the second working condition of the embodiment of the utility model;

[0017] Figure 4 It is a three-way valve perspective view;

[0018] Figure 5 This is the main view of the three-way valve;

[0019] Figure 6 For three-way valve Figure 5 Cross-sectional view along line AA;

[0020] Figure 7 It is the left view of the three-way valve;

[0021] Figure 8 This is the right side view of the three-way valve;

[0022] Figure 9 For three-way valve Figure 8Cross-sectional view along the midline BB;

[0023] The numbers in the figure represent the following:

[0024] 1-three-way valve; 11-inlet three-way valve; 111-inlet valve body; 112-first guide column; 113-first piston; 114-first gas interface; 115-second gas interface; 116-third gas interface; 117-first upper spring; 118-first lower spring; 12-outlet three-way valve; 121-outlet valve body; 122-second guide column; 123-second piston; 124-fourth gas interface; 125-fifth gas interface; 126-sixth gas interface; 127-second upper spring; 128-second lower spring; 2-sealing ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, the utility model provides a compressed air pressure stabilizing and regulating device, which mainly includes a main air storage tank, a spare air storage tank, a three-way valve 1, an air compressor and air-using equipment;

[0027] This embodiment includes two three-way valves 1, namely an air inlet three-way valve 11 and an air outlet three-way valve 12. The first gas interface 114 of the air inlet three-way valve 11 is connected to the air compressor, the second gas interface 115 is connected to the main gas tank and the third gas interface 116 is connected to the backup gas tank. The first gas interface 114 of the air outlet three-way valve 12 is connected to the main gas tank, the second gas interface 115 is connected to the gas-using equipment and the third gas interface 116 is connected to the backup gas tank.

[0028] Combine Figure 4-Figure 9As shown, the intake three-way valve 11 includes an intake valve body 111, a first gas interface 114, a second gas interface 115, a third gas interface 116, a first piston 113, a first upper spring 117, a first lower spring 118 and a first guide column 112. There is a cylindrical cavity at the center of the intake valve body 111, the first piston 113 fits tightly with the cavity, the first guide column 112 is located at the vertical axis of the cavity and is fixedly connected to the upper and lower ends of the intake valve body 111, and the two ends of the first upper spring 117 are respectively fixed to the first piston 113. The upper end and the upper end of the cavity, the two ends of the first lower spring 118 are respectively fixed to the lower end of the first piston 113 and the lower end of the cavity, the first guide column 112 passes through the first lower spring 118, the first piston 113 and the first upper spring 117 from bottom to top along the axis of the three, and the three different heights of the intake valve body 111 are provided with a first gas interface 114, a second gas interface 115 and a third gas interface 116 arranged in sequence from bottom to top, and the first gas interface 114, the second gas interface 115 and the third gas interface 116 are connected to the cavity;

[0029] The outlet three-way valve 12 includes an outlet valve body 121, a fourth gas interface 124, a fifth gas interface 125, a sixth gas interface 126, a second piston 123, a second upper spring 127, a second lower spring 128 and a second guide column 122. The outlet three-way valve 12 has the same structure as the inlet three-way valve 11.

[0030] Combine Figure 2 As shown, when the air pressure inside the main air storage tank is greater than a preset threshold, the air inlet three-way valve 11 and the air outlet three-way valve 12 enter the first working state, the air compressor is connected to the main air storage tank and the backup air storage tank, the main air storage tank is connected to the gas-consuming equipment, and the backup air storage tank is not connected to the gas-consuming equipment;

[0031] When in the first working condition, the first piston 113 inside the intake three-way valve 11 is pushed upward by the excess compressed air, the first upper spring 117 is compressed, and the first lower spring 118 is stretched. At this time, the first piston 113 inside the intake three-way valve 11 is located above the third gas interface 116, and the first gas interface 114, the second gas interface 115, and the third gas interface 116 are connected inside the cavity. The compressed air generated by the air compressor fills the main air tank while the excess compressed air generated by the air compressor fills the backup air tank.

[0032] The second piston 123 in the internal cavity of the outlet three-way valve 12 moves upward under the thrust of the compressed air. At this time, the second piston 123 inside the outlet valve body 121 is located between the fifth gas interface 125 and the sixth gas interface 126, and the fourth gas interface 124 and the fifth gas interface 125 are connected inside the cavity. At this time, only the main gas tank supplies gas to the gas-using equipment.

[0033] Combine Figure 3 As shown, when the air pressure inside the main air tank is lower than a preset threshold, the air inlet three-way valve 11 and the air outlet three-way valve 12 enter the second working state, the air compressor is connected to the main air tank, the air compressor is not connected to the backup air tank, the main air tank is not connected to the gas-consuming equipment, and the backup air tank is connected to the gas-consuming equipment;

[0034] When in the second working condition, the first piston 113 inside the intake valve body 111 is located between the second gas interface 115 and the third gas interface 116, the first gas interface 114 and the second gas interface 115 are connected inside the cavity, and the air compressor only supplies gas to the main gas tank and does not supply gas to the backup gas tank;

[0035] The second piston 123 inside the outlet valve body 121 is located below the fifth gas interface 125, the second upper spring 127 is stretched and the second lower spring 128 is contracted, the fifth gas interface 125 and the sixth gas interface 126 are connected inside the cavity, and the backup gas tank supplies gas to the gas-using equipment.

[0036] The air inlet end of the spare air storage tank is fixedly connected to the pressure sensor, and the air outlet end of the spare air storage tank is fixedly connected to the flow sensor.

[0037] When the gas-consuming equipment is running at a low load, the feeding system enters the first working condition. At this time, the compressed air provided by the main gas tank is much greater than the compressed air required by the gas-consuming equipment. The speed at which the air compressor fills the main gas tank is greater than the speed at which the main gas tank discharges compressed air. The air pressure in the main gas tank rises rapidly until it is maintained at a threshold value. The compressed air produced by the air compressor cannot be absorbed in the cavity of the air inlet three-way valve 11, so it pushes the first piston 113 upward. Until the first piston 113 moves above the third gas interface 116, the excess compressed air in the air inlet valve body 111 is absorbed by the backup gas tank; at this time, the fourth gas interface 124 connected to the main gas tank in the air outlet three-way valve 12 discharges compressed air to push the second piston 123 upward until the fourth gas interface 124 is connected to the fifth gas interface 125 in the cavity inside the air outlet valve body 121. At this time, the second upper spring 127 is compressed and the second lower spring 128 is stretched. When the pressure sensor connected to the backup gas tank detects that the threshold value has been reached, the air compressor is turned off;

[0038] When the main gas tank is continuously supplying gas to the gas equipment and the gas pressure of the main gas tank is insufficient, the second piston 123 in the outlet three-way valve 12 moves downward under the action of the gas pressure, the second upper spring 127 and the second lower spring 128, until the second piston 123 moves below the fifth gas interface 125, at this time, the feeding system enters the second working condition, and the standby gas tank supplies the gas equipment with gas, when the flow sensor fixed at the output end of the standby gas tank detects that the gas flows, the air compressor is started and supplies the main gas tank with gas, at this time, in the inlet three-way valve 11, the first piston 113 is located above the second gas interface 115, and the first gas interface 114 and the second gas interface 115 are connected in the cavity.

[0039] The original feeding system is additionally provided with a standby gas tank, the standby gas tank absorbs the excess compressed air when the air compressor works at a low load, and releases the compressed air when the amount of the compressed air in the main gas tank is insufficient, so that the overall gas pressure balance of the feeding system is adjusted and stabilized, and the problem that the equipment is stopped due to the delayed matching of the compressed air is prevented.

[0040] The above examples are only exemplary embodiments of the utility model, and are not used to limit the utility model, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the essence and protection scope of the utility model, and the modification or equivalent replacement should also be regarded as the embodiments of the utility model falling within the protection scope of the utility model.

Claims

1. A compressed air pressure stabilizing and regulating device, characterized in that: It includes a main gas storage tank, a spare gas storage tank, a three-way valve (1), an air compressor and gas-using equipment; This embodiment comprises two three-way valves (1), namely an air inlet three-way valve (11) and an air outlet three-way valve (12); The air inlet three-way valve (11) has one end connected to the air compressor, and the other two ends are respectively connected to the main air storage tank and the backup air storage tank; The three-way gas outlet valve (12) has one end connected to the gas-using equipment, and the other two ends connected to the main gas storage tank and the backup gas storage tank respectively; When the air pressure inside the main air storage tank is greater than a preset threshold, the air inlet three-way valve (11) and the air outlet three-way valve (12) enter a first working state, the air compressor is connected to the main air storage tank and the backup air storage tank, the main air storage tank is connected to the gas-consuming equipment, and the backup air storage tank is not connected to the gas-consuming equipment; When the air pressure inside the main air storage tank is less than a preset threshold value, the air inlet three-way valve (11) and the air outlet three-way valve (12) enter the second working state, the air compressor is connected to the main air storage tank, the air compressor is not connected to the backup air storage tank, the main air storage tank is not connected to the gas-consuming equipment, and the backup air storage tank is connected to the gas-consuming equipment.

2. A compressed air pressure stabilizing and regulating device according to claim 1, characterized in that: The air intake three-way valve (11) comprises an air intake valve body (111), a first guide column (112), a first piston (113), a first gas interface (114), a second gas interface (115), and a third gas interface (116); a cavity is provided inside the air intake valve body (111) of the air intake three-way valve (11); the first piston (113) is tightly fitted with the cavity; the first gas interface (114), the second gas interface (115), and the third gas interface (116) are arranged in sequence from bottom to top at three different heights of the air intake valve body (111); the first gas interface (114), the second gas interface (115), and the third gas interface (116) are in communication with the cavity; The outlet three-way valve (12) comprises an outlet valve body (121), a second guide column (122), a second piston (123), a fourth gas interface (124), a fifth gas interface (125), and a sixth gas interface (126); the outlet three-way valve (12) has the same structure as the inlet three-way valve (11); When the air inlet three-way valve (11) and the air outlet three-way valve (12) enter a first working condition, the first piston (113) in the air inlet three-way valve (11) is located above the third gas interface (116), the first gas interface (114), the second gas interface (115) and the third gas interface (116) are connected inside the cavity of the air inlet valve body (111), the second piston (123) in the air outlet three-way valve (12) is located between the fifth gas interface (125) and the sixth gas interface (126), and the fourth gas interface (124) and the fifth gas interface (125) are connected inside the cavity of the air outlet valve body (121); When the air inlet three-way valve (11) and the air outlet three-way valve (12) enter the second working state, the first piston (113) in the air inlet three-way valve (11) is located between the second gas interface (115) and the third gas interface (116), the first gas interface (114) and the second gas interface (115) are connected inside the cavity of the air inlet valve body (111), the second piston (123) of the air outlet three-way valve (12) is located below the fifth gas interface (125), and the fifth gas interface (125) and the sixth gas interface (126) are connected inside the cavity of the air outlet valve body (121).

3. A compressed air pressure stabilizing and regulating device according to claim 2, characterized in that: A coaxial first upper spring (117) is fixed between the upper end surface of the first piston (113) and the upper end surface of the inner cavity of the intake valve body (111), and a coaxial first lower spring (118) is fixed between the lower end surface of the first piston (113) and the lower end surface of the inner cavity of the intake valve body (111); A coaxial second upper spring (127) is fixed between the upper end surface of the second piston (123) and the upper end surface of the internal cavity of the outlet valve body (121), and a coaxial second lower spring (128) is fixed between the lower end surface of the second piston (123) and the lower end surface of the internal cavity of the outlet valve body (121).

4. A compressed air pressure stabilizing and regulating device according to claim 3, characterized in that: A first guide post (112) is provided at the axis of the first piston (113), the first upper spring (117) and the first lower spring (118). The first guide post (112) passes through the central axis of the first piston (113), the first upper spring (117) and the first lower spring (118) respectively and is fixed at the upper and lower ends of the intake valve body (111); A second guide column (122) is provided at the axis of the second piston (123), the second upper spring (127) and the second lower spring (128). The second guide column (122) respectively passes through the central axis of the second piston (123), the second upper spring (127) and the second lower spring (128) and is fixed at the upper and lower ends of the outlet valve body (121).

5. The compressed air pressure stabilizing and regulating device according to claim 1, characterized in that: The air inlet end of the spare air storage tank is fixedly connected to the pressure sensor, and the air outlet end of the spare air storage tank is fixedly connected to the flow sensor.

6. A compressed air pressure stabilizing and regulating device according to claim 2, characterized in that: The first gas interface (114), the second gas interface (115), and the third gas interface (116) are all provided with annular grooves on the intake valve body (111), and each groove has a sealing ring (2) embedded therein, and the sealing ring (2) is used to seal the gas transport pipeline connected to the gas interface and the intake three-way valve (11); The fourth gas interface (124), the fifth gas interface (125) and the sixth gas interface (126) are all provided with annular grooves on the gas outlet valve body (121), and each groove is embedded with the sealing ring (2), and the sealing ring (2) is used to seal the gas transport pipeline connected to the gas interface and the gas outlet three-way valve (12).

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