Diaphragm type pressurizing air source system

Abstract

The utility model relates to a diaphragm type pressurization air source system in the technical field of air source pressurization, which comprises a buffer air bottle, a main air delivery pipe, and a pressure gauge I, a safety valve I, a one-way valve I, a supercharger, a filter II, a safety valve II, a pressure reducing valve, a one-way valve II and a pressure gauge II which are sequentially mounted on the main air delivery pipe, a bottle opening of the buffer gas bottle is communicated with a pipe body of the gas transmission main pipe between the supercharger and the filter II; a three-way valve I is arranged between the one-way valve II and the pressure gauge II, two ports of the three-way valve I are connected to the corresponding gas transmission main pipe body in series, a third port of the three-way valve I is connected with a gas transmission branch pipe, and the other end of the gas transmission branch pipe is communicated with the gas transmission main pipe body between the filter II and the pressure reducing valve. The gas conveying branch pipes can be correspondingly switched and communicated with corresponding pipe sections of the gas conveying main pipes which are correspondingly connected in parallel; according to the gas source system, the output pressure is more diversified and adjustable, and the safety and the purity of a gas path can be better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas source pressurization, in particular to a diaphragm type pressurized gas source system. Background Technique

[0002] As is known, the basic principle of a diaphragm type supercharger is that a motor drives a piston, and the pressure of gas or liquid is increased through the deformation (reciprocating motion) of the diaphragm. The advantages of this type of supercharger include no leakage, being suitable for the compression of high-purity fluids, and simple maintenance, etc., and it is especially suitable for nitrogen pressurization; however, traditional ones do not continuously pressurize for use. For example, the Chinese patent with the publication number CN109555967A discloses an external pressurization device for an on-vehicle LNG gas cylinder, which stores the source gas by setting a gas cylinder under reduced pressure and releases it when needed; however, this existing pressurization device also has some defects: First, its pressurized gas comes from another gas cylinder and the maximum pressure cannot be adjusted; Second, the gas output pressure can only be adjusted by a pressure reducing valve, and the output mode is single; Third, the safety and purity of the entire gas circuit device are relatively low. Content of the Utility Model

[0003] In order to overcome the deficiencies in the background technique and solve the existing technical problems, the utility model discloses a diaphragm type pressurized gas source system, which not only has a more diverse and adjustable output pressure, but also can better ensure the safety and purity of the gas circuit.

[0004] To achieve the above-mentioned invention purpose, the utility model adopts the following technical scheme:

[0005] A diaphragm type pressurized gas source system includes a buffer gas cylinder and a main gas transmission pipe, as well as a pressure gauge I, a safety valve I, a check valve I, a supercharger, a filter II, a safety valve II, a pressure reducing valve, a check valve II, and a pressure gauge II which are sequentially installed on the main gas transmission pipe from the inlet to the outlet; the check valve I and the check valve II conduct unidirectionally from the inlet to the outlet of the main gas transmission pipe, and the bottle mouth of the buffer gas cylinder is communicated with the pipe body of the main gas transmission pipe between the supercharger and the filter II; a three-way valve I is provided between the check valve II and the pressure gauge II, two ports of the three-way valve I are connected in series to the corresponding pipe body of the main gas transmission pipe, and a third port of the three-way valve I is connected with a gas transmission branch pipe, and the other end of the gas transmission branch pipe is communicated with the pipe body of the main gas transmission pipe between the filter II and the pressure reducing valve, so that when the three-way valve I is switched, the gas transmission branch pipe and the corresponding pipe section of the corresponding parallel main gas transmission pipe can be correspondingly switched and conducted.

[0006] Further, the supercharger is set as a diaphragm type supercharger with its inlet end and outlet end connected in series to the main gas transmission pipe and a rated voltage of 220V.

[0007] Further, a pressure detector is provided at any position from the outlet end of the supercharger to the buffer gas cylinder, and the pressure detector is correspondingly signal-connected to the supercharger.

[0008] Furthermore, a filter I is also installed at the inlet of the main gas transmission pipe.

[0009] Furthermore, the three-way valve I is set as an L-shaped three-way valve, and the main port of the L-shaped three-way valve is communicated with the pipe body of the main gas transmission pipe close to the pressure gauge II.

[0010] Furthermore, a three-way valve II and a three-way valve III are respectively installed at the inlet end and the outlet end of the main gas transmission pipe, and both the three-way valve II and the three-way valve III have a switching port for venting.

[0011] Furthermore, both the three-way valve II and the three-way valve III are set as T-shaped three-way valves.

[0012] Furthermore, the gas source system is installed in a mobile cabinet.

[0013] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0014] The diaphragm type pressurized gas source system disclosed by the utility model uses a booster to pressurize and supply gas to a buffer gas cylinder, so that the maximum gas storage pressure of the buffer gas cylinder can be adjusted by the booster according to needs. When the buffer gas cylinder releases gas for use, it can either directly pass through the gas transmission branch pipe for natural output, or pass through the main gas transmission pipe and be stably output after being adjusted by a pressure reducing valve. Therefore, the output pressure of the entire gas source system is more diversely adjustable, meeting more application scenarios and requirements. In addition, safety valves are set before and after pressurization to ensure system safety, and check valves are set to prevent gas backflow from polluting the pipeline and the buffer gas cylinder, greatly improving the purity of the gas path. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0016] In the figure: 1. Filter I; 2. Three-way valve II; 3. Pressure gauge I; 4. Safety valve I; 5. Check valve I; 6. Booster; 7. Buffer gas cylinder; 8. Filter II; 9. Safety valve II; 10. Pressure reducing valve; 11. Check valve II; 12. Three-way valve I; 13. Pressure gauge II; 14. Three-way valve III. Detailed Embodiment

[0017] Next, the technical solution of the utility model will be described in conjunction with the drawings in the embodiments of the utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", etc. indicating the orientation or position relationship, they are only corresponding to the drawings of the utility model for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation:

[0018] Combined with the attached Figure 1The described diaphragm type pressurized air source system includes a buffer gas cylinder 7 and a main gas transmission pipe, as well as a pressure gauge I 3, a safety valve I 4, a one-way valve I 5, a booster 6, a filter II 8, a safety valve II 9, a pressure reducing valve 10, a one-way valve II 11, and a pressure gauge II 13 that are sequentially installed on the main gas transmission pipe from the inlet to the outlet; as needed, the booster 6 is set with its inlet end and outlet end connected in series on the main gas transmission pipe, and is a diaphragm type booster with a rated voltage of 220V, which can utilize the advantages of the diaphragm type booster to be applicable to nitrogen pressurization, and the booster 6 can be pressurized and adjusted at any time following the entire air source system; in addition, a pressure detector is provided at any position from the outlet end of the booster 6 to the buffer gas cylinder, and the pressure detector is signal-connected to the booster 6 to establish pressure feedback. When starting the booster 6 to pressurize, it will automatically stop when reaching the preset shutdown pressure, and when the pressure is lower than the preset pneumatic pressure, it can control the booster 6 to start pressurizing again, so as to realize the unattended automatic gas storage function; the one-way valve I 5 and the one-way valve II 11 conduct unidirectionally from the inlet to the outlet of the main gas transmission pipe to prevent gas backflow from polluting the pipeline and the buffer gas cylinder 7, improving the purity of the gas path. The bottle mouth of the buffer gas cylinder 7 is connected to the pipe body of the main gas transmission pipe between the booster 6 and the filter II 8. During pressurization, the booster 6 can directly output high-pressure gas to the buffer gas cylinder 7; as needed, a filter I 1 is also installed at the inlet of the main gas transmission pipe, which, together with the filter II 8, maintains the cleanliness of the output gas;

[0019] A three-way valve I 12 is provided between the one-way valve II 11 and the pressure gauge II 13. Two ports of the three-way valve I 12 are connected in series to the corresponding pipe body of the main gas transmission pipe, and the third port of the three-way valve I 12 is connected with a gas transmission branch pipe. The other end of the gas transmission branch pipe is connected to the pipe body of the main gas transmission pipe between the filter II 8 and the pressure reducing valve 10, so that when the three-way valve I 12 is switched, the gas transmission branch pipe and the corresponding parallel pipe section of the main gas transmission pipe can be correspondingly switched and conducted. When the buffer gas cylinder 7 releases gas for use, it can directly flow through the gas transmission branch pipe for natural output, or can flow through the main gas transmission pipe and be stably output after being adjusted by the pressure reducing valve; specifically, the three-way valve I 12 is set as an L-shaped three-way valve. The main port of the L-shaped three-way valve is connected to the pipe body of the main gas transmission pipe near the pressure gauge II 13, and by switching and conducting the other two switching ports, the switching between the two output modes can be realized.

[0020] As needed, a three-way valve II 2 and a three-way valve III 14 are respectively installed at the inlet end and the outlet end of the main gas transmission pipe, and both the three-way valve II 2 and the three-way valve III 14 have a switching port for emptying; in addition, both the three-way valve II 2 and the three-way valve III 14 are set as T-shaped three-way valves. By conducting for emptying through the three-way valve II 2 and the three-way valve III 14, the unloading treatment before the system starts pressurizing for use and when the whole system shuts down and is not in use can be realized, playing a role in pressure relief protection for the whole system.

[0021] As needed, the gas source system is installed in a mobile cabinet. Components that require indication, adjustment, and external connection are all arranged on the outer wall of the mobile cabinet, facilitating observation, operation, and adjustment. The entire system can also be moved and used together with the cabinet.

[0022] When implementing the diaphragm type pressurized gas source system of the present utility model, a gas supply source and a gas-using device are respectively connected to the inlet end and the outlet end of the main gas pipeline. For example, when the nitrogen input is 4 - 35 MPa and the pressurization standard of the booster 6 is adjusted to 42 MPa, then nitrogen at 42 MPa is stored in the buffer gas cylinder 7. During use, when the three-way valve I 12 is adjusted to close the gas branch pipe and conduct the entire main gas pipeline, the output pressure depends on the pressure regulation of the pressure reducing valve 10 being adjusted. If the three-way valve I 12 is adjusted to switch and conduct the gas branch pipe, then the gas under the pressure of the buffer gas cylinder 7 can be directly output for use.

[0023] Parts not detailed in the present utility model are prior art. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any perspective, the above embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model, and any reference signs in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A diaphragm type pressurized air source system, characterized in that: It includes a buffer gas cylinder (7) and a main gas pipeline, and a pressure gauge I (3), a safety valve I (4), a check valve I (5), a booster (6), a filter II (8), a safety valve II (9), a pressure reducing valve (10), a check valve II (11) and a pressure gauge II (13) are installed on the main gas pipeline in sequence from the inlet to the outlet; the check valve I (5) and the check valve II (11) conduct unidirectionally from the inlet to the outlet of the main gas pipeline, and the mouth of the buffer gas cylinder (7) is communicated with the body of the main gas pipeline between the booster (6) and the filter II (8); a three-way valve I (12) is arranged between the check valve II (11) and the pressure gauge II (13), two ports of the three-way valve I (12) are connected in series on the corresponding body of the main gas pipeline, a third port of the three-way valve I (12) is connected with a gas transmission branch pipe, and the other end of the gas transmission branch pipe is communicated with the body of the main gas pipeline between the filter II (8) and the pressure reducing valve (10), so that when the three-way valve I (12) is switched, the gas transmission branch pipe and the corresponding pipe section of the parallel main gas pipeline can be correspondingly switched and conducted.

2. The diaphragm type pressurized air source system according to claim 1, characterized in that: The booster (6) is set as a diaphragm booster with its inlet end and outlet end connected in series on the main gas pipeline and a rated voltage of 220V.

3. The diaphragm type supercharging air source system according to claim 1, characterized in that: A pressure detector is arranged at any position from the outlet end of the booster (6) to the buffer gas cylinder, and the pressure detector is correspondingly signal-connected with the booster (6).

4. The diaphragm type supercharging air source system according to claim 1, characterized in that: A filter I (1) is also installed at the inlet of the main gas pipeline.

5. The diaphragm type pressurized air source system according to claim 1, wherein: The three-way valve I (12) is set as an L-shaped three-way valve, and the main port of the L-shaped three-way valve is communicated with the body of the main gas pipeline close to the pressure gauge II (13).

6. The diaphragm type supercharging air source system according to claim 1, characterized in that: A three-way valve II (2) and a three-way valve III (14) are respectively installed at the inlet end and the outlet end of the main gas pipeline, and both the three-way valve II (2) and the three-way valve III (14) have a switching port for emptying.

7. The diaphragm type pressurized air source system according to claim 6, wherein: Both the three-way valve II (2) and the three-way valve III (14) are set as T-shaped three-way valves.

8. The diaphragm type supercharging air source system according to claim 1, wherein: The gas source system is installed in a mobile cabinet.

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