Natural gas pressurizing switch device and pressurizing pump thereof

Abstract

The utility model discloses a natural gas pressurizing switch device and a pressurizing pump thereof. A natural gas pressurization switch device comprises a sliding groove; the switch piece is arranged in the sliding groove in a sliding mode; the at least three pipelines are respectively communicated with the sliding grooves; the through groove is formed in the switch piece; when the switch piece is squeezed by a piston of the booster pump and resets, the switch piece slides in the sliding groove, and the through grooves in the switch piece can be controlled to communicate with two adjacent pipelines so as to control oil liquid inlet and backflow. The natural gas booster pump applies the boosting switch device. The natural gas pressurizing switch device and the pressurizing pump thereof have the advantages of being higher in sealing performance and reliability so as to ensure pressurizing and sealing processes of natural gas and prevent leakage of the natural gas.

Description

Technical Field

[0001] The utility model relates to a natural gas boosting switch device and a boosting pump thereof. Background Art

[0002] A natural gas booster pump is a device used to boost the pressure of natural gas. It is usually used in natural gas transmission and distribution systems to increase the pressure of natural gas so that it can pass through the transmission pipeline smoothly. A natural gas booster pump can boost natural gas from a lower pressure to a higher pressure to meet the needs of transmission and use.

[0003] The working principle of the existing natural gas booster pump is to use the rotation of the impeller to generate centrifugal force to pressurize the natural gas entering the pump body. When the natural gas enters the pump body of the booster pump, the impeller starts to rotate, and the blades on the impeller generate centrifugal force on the natural gas, which puts pressure on the natural gas, thereby achieving pressurization. The pressurized natural gas is transported to the delivery pipeline through the pump shaft to meet the needs of transportation and use.

[0004] The specific working process of the natural gas booster pump is as follows: 1. Natural gas enters the pump body of the booster pump from the inlet; 2. The impeller starts to rotate, and the blades generate centrifugal force on the natural gas; 3. Under the action of centrifugal force, the natural gas pressure gradually increases; 4. The pressurized natural gas is transported to the delivery pipeline through the pump shaft; 5. The natural gas is output from the outlet of the delivery pipeline to meet usage needs.

[0005] From the above, it can be seen that the existing natural gas pressurized transportation generally uses the action of the pump body impeller to increase the natural gas pressure, and its pressurization method is generally external pressurization, which puts forward higher requirements on the sealing of the connected booster pump, and requires a more reliable and precise sealing system to prevent natural gas leakage. Utility Model Content

[0006] The purpose of the utility model is to provide a natural gas boosting switch device and a boosting pump thereof. The natural gas boosting switch device and the boosting pump thereof have higher sealing performance and reliability, so as to ensure the pressurization and sealing process of natural gas and prevent natural gas leakage.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A natural gas boost switch device comprises: a sliding groove; a switch member slidingly arranged in the sliding groove; at least three pipelines respectively connected to the sliding groove; a through groove arranged on the switch member; when the switch member slides in the sliding groove when the piston of a boost pump is squeezed and reset, the through groove on the switch member can be controlled to be connected to two adjacent pipelines respectively to control the inflow and reflux of oil.

[0009] The utility model is further configured as follows: the pipeline includes a pipe A, a pipe B, a pipe C, and also includes a reversing valve connected to the pipe B.

[0010] The utility model is further configured as follows: it also includes a return spring, which is arranged between the switch member and the sliding groove.

[0011] The utility model is further configured such that: in the initial state of the switch member, the through groove connects the tube B and the tube C.

[0012] The utility model is further configured such that: when the switch member is pressed, the through groove connects the tube A and the tube B.

[0013] A natural gas booster pump uses the booster switch device mentioned above.

[0014] In summary, the utility model has the following beneficial effects: the natural gas boosting switch device and the boosting pump thereof have higher sealing performance and reliability, so as to ensure the pressurization and sealing process of the natural gas and prevent the leakage of the natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an embodiment;

[0016] Figure 2 is a cross-sectional view corresponding to the position of the flow channel in the embodiment;

[0017] Figure 3 for Figure 2 A front view of

[0018] Figure 4 This is a schematic diagram of the structure of the embodiment without the pump barrel;

[0019] Figure 5 is a cross-sectional view of a portion corresponding to a switch member in the embodiment;

[0020] Figure 6 for Figure 5 A front view of

[0021] Figure 7 for Figure 5 A magnified image of area A;

[0022] Figure 8 A technical diagram of the internal piping for one of the controls.

[0023] Figure numerals: 1. Pump barrel; 2. Control device; 3. Pump shaft; 4. Piston; 5. Oil passage; 6. Air inlet; 7. Air outlet; 8. Box body; 9. Flow passage; 10. Boost switch device; 11. Slide groove; 12. Switch member; 13. Tube A; 14. Tube B; 15. Tube C; 16. Through groove; 17. Reversing valve. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0026] In the description of the present utility model, "multiple" means two or more than two, unless otherwise clearly specified and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1 As shown, a natural gas booster pump comprises a pump barrel 1. A control device 2 is arranged in the middle of the pump barrel 1. A pump shaft 3 is arranged in the pump barrel 1 for reciprocating sliding. The control device 2 is used to control the execution of the reciprocating motion of the pump shaft 3.

[0029] like Figure 2 , Figure 3 As shown, in order to provide a more reliable and better sealed pressurization method, the present application is provided with pistons 4 at both ends of the pump shaft 3, and the pump shaft 3 is provided with an oil passage 5 on one side of the piston 4. The oil passage 5 is annular and is provided on the circumference of the pump shaft 3. As described above, the oil passage is divided into two by the control device 2, which are respectively provided on both sides of the control device 2 and are independently provided.

[0030] As described above, when the oil passage 5 on one side is filled with liquid, the oil pressure on that side can be increased, thereby driving the pump shaft 3 to move by hydraulic means, and the oil passage 5 on the other side is arranged in the same corresponding manner. Through the process of alternating liquid filling and liquid return of the oil passages on both sides, the pump shaft 3 in the pump barrel 1 is made to reciprocate.

[0031] Correspondingly, both ends of the pump barrel 1 are provided with an inlet 6 for the natural gas to enter the pump barrel 1 and an outlet 7 for the natural gas to be pressed out of the pump barrel 1. A one-way valve (not shown) can be provided at both the inlet 6 and the outlet 7 to prevent gas backflow, so that the natural gas is in a one-way pressurized flow state.

[0032] When the piston 4 connected to the pump shaft 3 moves, the natural gas is sucked into the pump barrel 1. After that, the piston 4 pushes the natural gas out at a higher speed by squeezing, thereby increasing the pressure and flow rate of the natural gas to achieve the purpose of pressurization.

[0033] Under the above settings, the natural gas is pressurized and accelerated corresponding to the flow of oil by means of pressure monitoring of the control device 2 and other methods. At this time, the natural gas is pressurized no longer by the centrifugal force generated by the rotation of the impeller, but by pressurizing the pump barrel 1 to increase the flow rate and pressure of the natural gas. Compared with the impeller-type pressurization, the method described in this application requires only fewer seals and can achieve the technical purpose without a more sophisticated sealing system, thereby improving the sealing and reliability.

[0034] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, in order to control the flow of oil and drive the pump shaft 3 to reciprocate through the flow of oil, the control device 2 described in the present application includes a housing 8. A flow channel 9 for oil inlet and return and a boost switch device 10 are provided at the position of the housing 8 corresponding to the oil channel.

[0035] The boost switch device 10 includes a sliding groove 11. A switch member 12 is slidingly arranged in the sliding groove 11. The switch member 12 is slidingly arranged in the sliding groove 11. The top of the sliding groove 11 is connected with tube A13, tube B14 and tube C15 respectively. Among them, tube A13 is an oil inlet pipe, tube B14 is a reversing oil pipe corresponding to the reversing valve 17, and tube C15 is an oil return pipe. Corresponding to the above-mentioned tubes A13, B14 and C15. A through groove 16 is arranged on the switch member 12. A reset spring (not shown) is also arranged between the switch member 12 and the sliding groove 11 to ensure that the switch member 12 is in a state of passing through the sliding groove 11 in the initial state.

[0036] Corresponding to the above status, this application is set as:

[0037] In the initial state of the switch member 12, the through groove 16 connects the pipe B14 and the pipe C15, and the oil flows from the pipe B14 into the pipe C15. The pipe C15 is connected to the corresponding oil pump body so that the oil is pumped out.

[0038] In the working state when the switch member 12 is pressed by the piston 4, the switch member 12 enters the sliding groove 11, so that the through groove 16 connects the pipe A13 and the pipe B14. The pipe A13 connects with the corresponding oil inlet pump body, so that the oil flows along the pipe A13 into the pipe B14 for oil inlet, and the oil enters the reversing valve 17, and pushes the reversing valve 17 to work so that the oil enters the flow channel 9, and finally enters the oil channel 5, squeezes the oil channel 5, and prompts the piston 4 to move and squeeze the natural gas to be discharged from the gas outlet 7.

[0039] Through the above-mentioned arrangement, the oil pumping and oil intake processes are carried out reciprocatingly, so that the pump shaft 3 is in a reciprocating motion state, natural gas is pumped in, and pressurized to be discharged. Moreover, the whole is in a closed state, and only the connection between the oil pump body and the liquid intake pump body needs to be provided with corresponding seals, and the movement of natural gas is realized in the one-piece formed pump barrel 1, which reduces the risk and possibility of natural gas leakage and improves the reliability, safety and sealing of the operation of the device.

[0040] It should be noted that:

[0041] This application provides one possible oil operation mode, such as Figure 8 As shown, the oil pump of prior art can also be used.

[0042] The operation mode of the oil in the oil pump of this application is the prior art, so it will not be described in detail.

[0043] The reversing valve 17 described in this application is no different from the prior art, so it will not be described in detail.

[0044] The internal piping design in the control device 2 of the present application can be adjusted according to actual needs, so it will not be described in detail.

[0045] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A natural gas booster switch device, characterized in that: include: Box, A sliding groove (11) is arranged in the box body; A switch member (12) is slidably disposed in the sliding groove (11); At least three pipes, respectively connected to the sliding groove (11); A through slot (16) is provided on the switch member (12); When the switch element (12) is squeezed and reset by the piston (4) of the booster pump so that the switch element (12) slides in the sliding groove (11), the through groove (16) on the switch element (12) can be controlled to connect two adjacent pipes respectively to control the inflow and return of oil.

2. The natural gas booster switch device according to claim 1, characterized in that: The pipeline includes a pipe A (13), a pipe B (14), a pipe C (15), and also includes a reversing valve (17) which is connected to the pipe B (14).

3. The natural gas booster switch device according to claim 1, characterized in that: It also includes a return spring, which is arranged between the switch member (12) and the sliding groove (11).

4. The natural gas boost switch device according to claim 1, characterized in that: In the initial state of the switch member (12), the through groove (16) connects the tube B (14) and the tube C (15).

5. The natural gas boost switch device according to claim 1, characterized in that: When the switch member (12) is pressed, the through groove (16) connects the tube A (13) and the tube B (14).

6. A natural gas booster pump, characterized in that: include: Pump barrel (1); The natural gas boost switch device according to any one of claims 1 to 5, as a control device (2) arranged in the middle of the pump barrel (1); A pump shaft (3) is reciprocatingly and slidably disposed in the pump barrel (1); Pistons (4) are arranged at both ends of the pump shaft (3); An oil passage (5) is arranged on the circumference of the pump shaft (3) and is annular in shape; An air inlet (6) and an air outlet (7) are arranged at two ends of the pump barrel (1).

7. The natural gas booster pump according to claim 6, characterized in that: The air inlet (6) and the air outlet (7) are both provided with a one-way valve.

8. The natural gas booster pump according to claim 6, characterized in that: The oil passage (5) is divided by the control device (2) into two independent parts, which are respectively arranged on two sides of the control device (2).

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