A high-pressure gas storage device with integrated pressure control and monitoring

Abstract

The present invention relates to a high-pressure gas storage device with integrated pressure control and monitoring, including a gas cylinder, a gas cylinder stop valve, a pressure reducing valve, a gas cylinder pressure sensor and an inflation wrench; the gas cylinder stop valve is provided with four interfaces, which are respectively connected to the gas cylinder, the gas cylinder pressure sensor, the pressure reducing valve and the inflation gas source; the gas cylinder pressure sensor is connected to the gas cylinder; the gas cylinder stop valve is connected to the pressure reducing valve through a transition pipeline; the gas cylinder stop valve includes a stop valve and an inflation valve; the stop valve is used to control the output of high-pressure gas in the gas cylinder to the pressure reducing valve; the pressure reducing valve is used to output gas that is constant within a set pressure range; the inflation valve is connected to the gas cylinder, and is used to control the inflation gas source to inflate the gas cylinder; the inflation wrench is used to open the inflation valve, and the inflation speed is controlled by controlling the opening of the inflation valve. The present invention does not need to remove the pressure reducing valve and the pressure monitoring device, and can control the inflation speed by opening the inflation valve of the gas cylinder stop valve through the inflation wrench, and can monitor the pressure changes in the gas cylinder in real time.

Description

Technical Field

[0001] The present invention belongs to the field of astronaut support in spacecraft, and in particular relates to a high-pressure gas storage device with integrated pressure control and monitoring. Background Art

[0002] As an important gas supply and pressure regulating device for spacecraft, high-pressure gas storage devices can provide life support and working environment for astronauts in the space station. High-pressure gas storage devices are used in many fields, such as underwater and vacuum environments, which require oxygen supply and pressure change. Most of the existing high-pressure gas storage devices have gas cylinders, pressure reducing valves, gas cylinder stop valves and pressure monitoring devices installed separately. When inflating, the pressure reducing valve and pressure monitoring device need to be removed, which brings inconvenience to people's operation.

[0003] In the prior art, there is a switching solution of filling or transmitting gas to the outside by inserting a pin, which saves the trouble of installing a pressure reducing valve. However, this method cannot control the filling speed, cannot adjust the working conditions, and has no pressure monitoring device to monitor the pressure changes in the gas cylinder in real time. Summary of the invention

[0004] The purpose of the present invention is to provide a high-pressure gas storage device with integrated pressure control and monitoring. The inflation speed can be controlled by opening the inflation valve of the gas cylinder stop valve with an inflation wrench without removing the pressure reducing valve and the pressure monitoring device, and the pressure changes in the gas cylinder can be monitored in real time.

[0005] The present invention provides a high-pressure gas storage device with integrated pressure control and monitoring, including a gas cylinder, a gas cylinder stop valve, a pressure reducing valve, a gas cylinder pressure sensor and an inflation wrench;

[0006] The gas cylinder stop valve is provided with four interfaces, which are respectively connected to the gas cylinder, the gas cylinder pressure sensor, the pressure reducing valve and the inflation gas source; the gas cylinder pressure sensor is connected to the gas cylinder for real-time monitoring of the pressure of the gas in the gas cylinder; the gas cylinder stop valve is connected to the pressure reducing valve through a transition pipeline; the gas cylinder stop valve includes a stop valve and an inflation valve;

[0007] The stop valve is used to control the output of high-pressure gas in the gas cylinder to the pressure reducing valve; the pressure reducing valve is used to output gas that is constant within a set pressure range; the charging valve is connected to the gas cylinder and is used to control the charging gas source to charge the gas cylinder; the charging wrench is used to open the charging valve and control the charging speed by controlling the opening of the charging valve.

[0008] Furthermore, the inflation wrench includes a pipe joint plugging cap, a rotating shaft protection cap, a long locking nut, a rotating shaft, a shell, a handle and an inflation wrench handwheel; the pipe joint plugging cap is plugged on the pipe joint, and the pipe joint is used to connect the inflation gas source; the rotating shaft protection cap is arranged on the free end of the rotating shaft; the long locking nut is arranged on the outer periphery of the free end of the rotating shaft, and is used to be tightly connected with the inflation valve; the inflation wrench handwheel is connected to the driving end of the rotating shaft, and is used to drive the rotating shaft to rotate to open the inflation valve, and inflate the gas cylinder through the pipe joint; the handle is arranged perpendicular to the rotating shaft and coaxially with the pipe joint, and the inflation wrench as a whole constitutes a cross structure.

[0009] Furthermore, the gas cylinder stop valve also includes a gas cylinder stop valve body, a gas cylinder filter element, an outlet filter element, an inflation cap, a handwheel locking ring, and a handwheel; the gas cylinder filter element is installed at the interface between the gas cylinder stop valve and the gas cylinder, and is used to filter the gas output from the gas cylinder; the outlet filter element is installed at the interface between the gas cylinder stop valve and the pressure reducing valve, and is used to filter the gas output from the gas cylinder stop valve; the inflation cap is arranged at the inflation valve port; the handwheel is connected to the inflation valve, and is used to control the switch of the inflation valve; the handwheel locking ring is used to lock the handwheel.

[0010] Furthermore, the pressure reducing valve includes an input interface assembly, a pressure reducing valve body, a first-stage pressure reducing assembly, a pressure reducing valve output interface and a second-stage pressure reducing assembly; the first-stage pressure reducing assembly and the second-stage pressure reducing assembly are arranged in the pressure reducing valve body, and both adopt a reverse non-unloading pressure reducing structure; the input interface assembly is used to connect the gas cylinder stop valve; the pressure reducing valve output interface adopts a quick-connect interface for connecting the gas output pipeline.

[0011] Furthermore, the pressure reducing valve further comprises a plug, and the plug is plugged in the processed hole of the valve body of the pressure reducing valve.

[0012] Furthermore, the input interface assembly is provided with a filter for blocking excess matter in the airflow.

[0013] With the above solution, through the high-pressure gas storage device with integrated pressure control and monitoring, the inflation speed can be controlled by opening the inflation valve of the gas cylinder shut-off valve through the inflation wrench without removing the pressure reducing valve and the pressure monitoring device, and the pressure changes in the gas cylinder can be monitored in real time.

[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a structural schematic diagram of a high-pressure gas storage device with integrated pressure control and monitoring according to the present invention;

[0016] Figure 2 It is a connection diagram of a high pressure gas storage device with integrated pressure control and monitoring of the present invention;

[0017] Figure 3 It is a connection diagram of the gas cylinder stop valve of the present invention;

[0018] Figure 4 yes Figure 2 The enlarged view of point Ⅰ in the middle;

[0019] Figure 5 yes Figure 2 The enlarged view of the middle II;

[0020] Figure 6 yes Figure 2 The enlarged view of the middle part Ⅲ;

[0021] Figure 7 yes Figure 3 The enlarged view of the middle IV;

[0022] Figure 8 The structure of the gas cylinder stop valve of the present invention is Figure 1 ;

[0023] Fig. 9 The structure of the gas cylinder stop valve of the present invention is Figure 2 ;

[0024] Fig.10 is a structural diagram of the pressure reducing valve of the present invention;

[0025] Fig.11 It is a structural diagram of the inflatable wrench of the present invention.

[0026] Numbers in the figure:

[0027] 1- Gas cylinder;

[0028] 2-gas cylinder stop valve; 21-gas cylinder stop valve body; 22-gas cylinder filter element; 23-export filter element; 24-inflating valve; 25-inflating plug cap; 26-stop valve; 27-handwheel locking ring; 28-handwheel;

[0029] 3-pressure reducing valve; 31-input interface assembly; 32-pressure reducing valve body; 33-first-stage pressure reducing assembly; 34-plug; 35-pressure reducing valve output interface; 36-second-stage pressure reducing assembly;

[0030] 4- Gas cylinder pressure sensor;

[0031] 5-inflatable wrench; 51-pipe joint plug cap; 52-rotating shaft protection cap; 53-long locking nut; 54-rotating shaft; 55-housing; 56-handle; 57-inflatable wrench handwheel;

[0032] 6- Transition pipeline. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] Ginseng Figures 1 to 11 As shown, this embodiment provides a high-pressure gas storage device with integrated pressure control and monitoring, including a gas cylinder 1, a gas cylinder stop valve 2, a pressure reducing valve 3, a gas cylinder pressure sensor 4 and a charging wrench 5;

[0035] The gas cylinder stop valve 2 is provided with four interfaces, which are respectively connected with the gas cylinder 1, the gas cylinder pressure sensor 4, the pressure reducing valve 3 and the inflation gas source; the gas cylinder pressure sensor 4 is connected with the gas cylinder 1, and is used to monitor the pressure of the gas in the gas cylinder 1 in real time; the gas cylinder stop valve 2 is connected with the pressure reducing valve 3 through the transition pipeline 6; the gas cylinder stop valve 2 includes a stop valve 26 and an inflation valve 24;

[0036] The stop valve 26 is used to control the output of the high-pressure gas in the gas cylinder 1 to the pressure reducing valve; the pressure reducing valve 3 is used to output gas that is constant within a set pressure range; the charging valve 24 is connected to the gas cylinder 1 and is used to control the charging gas source to charge the gas cylinder 1; the charging wrench 5 is used to open the charging valve 24, and the charging speed is controlled by controlling the opening of the charging valve 24.

[0037] When the gas cylinder 1 is filled with high-pressure gas, the stop valve 26 and the charging valve 24 of the gas cylinder stop valve 2 are closed, but the gas cylinder pressure sensor 4 is still directly connected to the high-pressure gas in the gas cylinder 1 through the inner cavity of the gas cylinder stop valve 2, and the pressure value of the gas in the gas cylinder 1 can be directly read. When the charging valve 24 of the gas cylinder stop valve 2 is closed and the stop valve 26 is opened, the gas passes through the secondary pressure reduction of the pressure reducing valve 3, and finally outputs gas that is constant within a certain pressure range. When the gas cylinder 1 needs to be inflated, the stop valve 26 of the gas cylinder stop valve 2 is closed, and the charging valve 24 of the gas cylinder stop valve 2 is opened with the charging wrench 5, and the input end of the charging wrench 5 is connected to the gas source to inflate the gas cylinder 1.

[0038] Through this high-pressure gas storage device with integrated pressure control and monitoring, the inflation speed can be controlled by opening the inflation valve of the gas cylinder shut-off valve through an inflation wrench without removing the pressure reducing valve and the pressure monitoring device, and the pressure changes in the gas cylinder can be monitored in real time.

[0039] In this embodiment, the inflation wrench 5 includes a pipe joint plugging cap 51, a rotating shaft protection cap 52, a long locking nut 53, a rotating shaft 54, a shell 55, a handle 56 and an inflation wrench handwheel 57; the pipe joint plugging cap 51 is plugged on the pipe joint to protect the pipe joint interface, and the pipe joint is used to connect the inflation gas source; the rotating shaft protection cap 52 is arranged on the free end of the rotating shaft 54; the long locking nut 53 is arranged on the outer periphery of the free end of the rotating shaft 54, and is used to ensure a tight connection with the inflation valve 24; the inflation wrench handwheel 57 is connected to the driving end of the rotating shaft 54, and is used to rotate the rotating shaft 54 ​​to open the inflation valve 24 and inflate the gas cylinder 1 through the pipe joint; the handle 56 is arranged perpendicular to the rotating shaft 54 ​​and coaxially with the pipe joint. The handle is convenient for people to apply force during operation, and the inflation wrench 5 as a whole constitutes a cross-shaped structure.

[0040] In this embodiment, the gas cylinder stop valve 2 also includes a gas cylinder stop valve body 21, a gas cylinder filter element 22, an outlet filter element 23, an inflation cap 25, a handwheel locking ring 27, and a handwheel 28; the gas cylinder filter element 22 is installed at the interface between the gas cylinder stop valve 2 and the gas cylinder 1, and is used to filter the gas output by the gas cylinder 1; the outlet filter element 23 is installed at the interface between the gas cylinder stop valve 2 and the pressure reducing valve 3, and is used to filter the gas output by the gas cylinder stop valve 2; the inflation cap 25 is arranged at the port of the inflation valve 24 to protect the inflation valve and prevent the inflation valve from being accidentally opened; the handwheel 28 is connected to the inflation valve 24, and is used to control the switch of the inflation valve 24; the handwheel locking ring 27 is used to lock the handwheel 28 to prevent the handwheel from opening due to vibration during the upward process of the gas cylinder 1.

[0041] When the product needs to be inflated, remove the inflation cap 25 on the gas cylinder stop valve 2, connect the inflation wrench 5 to the inflation interface on the gas cylinder stop valve body 21 through the long locking nut 53, rotate the inflation wrench handwheel 57 to drive the rotating shaft 54 ​​to rotate and open the inflation valve 24 of the gas cylinder stop valve 2, and the gas source inflates the gas cylinder 1 through the pipe joint on the shell 55. The inflation speed can be controlled by controlling the opening of the inflation valve 24. At the same time, the gas cylinder pressure sensor 4 can be used to monitor the changes in the pressure in the gas cylinder in real time.

[0042] In this embodiment, the pressure reducing valve 3 includes an input interface component 31, a pressure reducing valve body 32, a first-stage pressure reducing component 33, a pressure reducing valve output interface 35 and a second-stage pressure reducing component 36; the first-stage pressure reducing component 33 and the second-stage pressure reducing component 36 are arranged in the pressure reducing valve body 32, and both adopt a reverse non-unloading pressure reducing structure; the input interface component 31 is used to connect the gas cylinder stop valve 2; the pressure reducing valve output interface 35 adopts a quick-connect interface, which is used to connect the gas output pipeline, which is more convenient. The first-stage pressure reducing component 33 adopts a reverse non-unloading pressure reducing structure. This structure makes full use of the force of the inlet pressure as the sealing force of the valve, which can achieve a good shut-off function of the valve under the zero flow working state, and also reduces the load of the reset spring. The disadvantage of this structure is that the floating range of the outlet pressure is large with the change of the inlet pressure, but because the product itself has adopted a two-stage pressure reducing mechanism, the total output pressure can obtain a higher stability after the second-stage pressure reduction. The second-stage pressure reducing component 36 also adopts a reverse non-unloading pressure reducing structure. Due to the effect of the first-stage decompression, the second stage can obtain a lower inlet pressure with a small range of variation, and the product has a low flow requirement; the reverse decompression structure can obtain a higher output accuracy under low pressure and small flow conditions. In order to improve safety and reliability, the cavity after the first-stage decompression is designed according to the maximum inlet pressure tolerable, and the cavity after the second-stage decompression is designed according to the highest pressure after the first-stage decompression.

[0043] In this embodiment, the pressure reducing valve 3 further comprises a plug 34, which is plugged into the processing hole of the pressure reducing valve body 32. The function of the plug is to plug the hole punched during the processing of the pressure reducing valve body for processing the inner cavity.

[0044] In this embodiment, a filter is provided in the input interface assembly 31 for blocking excess matter in the airflow, thereby ensuring the sealing effect of the valve and the valve seat.

[0045] In this embodiment, the sealing form of the connection between the gas cylinder stop valve 2 and the gas cylinder 1 is a metal hard seal, that is, an annealed copper gasket is used as a sealing gasket, one or two circles of waterline are milled on the sealing surface of the end of the gas cylinder stop valve 2, and the threaded interface is tightened with a large torque, so that the copper gasket is deformed and embedded in the waterline, so that the interface achieves a sealing effect. The sealing form of the connection between the gas cylinder stop valve 2 and the gas cylinder pressure sensor 4 is also a metal hard seal. The sealing form of the connection between the transition pipeline 6 and the gas cylinder stop valve 2 and the pressure reducing valve 3 is also a metal hard seal.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high-pressure gas storage device with integrated pressure control and monitoring, characterized in that: It comprises a gas cylinder (1), a gas cylinder stop valve (2), a pressure reducing valve (3), a gas cylinder pressure sensor (4) and a charging wrench (5); The gas cylinder stop valve (2) is provided with four interfaces, which are respectively connected to the gas cylinder (1), the gas cylinder pressure sensor (4), the pressure reducing valve (3) and the inflation gas source; the gas cylinder pressure sensor (4) is connected to the gas cylinder (1) for real-time monitoring of the pressure of the gas in the gas cylinder (1); the gas cylinder stop valve (2) is connected to the pressure reducing valve (3) via a transition pipeline (6); the gas cylinder stop valve (2) comprises a stop valve (26) and an inflation valve (24); The stop valve (26) is used to control the high-pressure gas in the gas cylinder (1) to be output to the pressure reducing valve; the pressure reducing valve (3) is used to output gas that is constant within a set pressure range; the charging valve (24) is connected to the gas cylinder (1) and is used to control the charging gas source to charge the gas cylinder (1); the charging wrench (5) is used to open the charging valve (24) and control the charging speed by controlling the opening of the charging valve (24); The inflation wrench (5) comprises a pipe joint plugging cap (51), a rotating shaft protection cap (52), a long locking nut (53), a rotating shaft (54), a housing (55), a handle (56) and an inflation wrench handwheel (57); the pipe joint plugging cap (51) is plugged onto the pipe joint, and the pipe joint is used to connect an inflation gas source; the rotating shaft protection cap (52) is arranged at the free end of the rotating shaft (54); the long locking nut (53) is arranged at the outer periphery of the free end of the rotating shaft (54) and is used to be tightly connected to the inflation valve (24); the inflation wrench handwheel (57) is connected to the driving end of the rotating shaft (54) and is used to drive the rotating shaft (54) to rotate and open the inflation valve (24), so as to inflate the gas cylinder (1) through the pipe joint; the handle (56) is arranged perpendicular to the rotating shaft (54) and is coaxial with the pipe joint, and the inflation wrench (5) as a whole forms a cross-shaped structure; The gas cylinder stop valve (2) further comprises a gas cylinder stop valve body (21), a gas cylinder filter element (22), an outlet filter element (23), an air charging plugging cap (25), a hand wheel locking ring (27), and a hand wheel (28); the gas cylinder filter element (22) is installed at the interface between the gas cylinder stop valve (2) and the gas cylinder (1) and is used to filter the gas outputted by the gas cylinder (1); the outlet filter element (23) is installed at the interface between the gas cylinder stop valve (2) and the pressure reducing valve (3) and is used to filter the gas outputted by the gas cylinder stop valve (2); the air charging plugging cap (25) is arranged at the port of the air charging valve (24); the hand wheel (28) is connected to the air charging valve (24) and is used to control the opening and closing of the air charging valve (24); and the hand wheel locking ring (27) is used to lock the hand wheel (28).

2. The high-pressure gas storage device with integrated pressure control and monitoring according to claim 1, characterized in that: The pressure reducing valve (3) comprises an input interface assembly (31), a pressure reducing valve body (32), a first-stage pressure reducing assembly (33), a pressure reducing valve output interface (35) and a second-stage pressure reducing assembly (36); the first-stage pressure reducing assembly (33) and the second-stage pressure reducing assembly (36) are arranged in the pressure reducing valve body (32), and both adopt a reverse non-unloading pressure reducing structure; the input interface assembly (31) is used to connect to the gas cylinder stop valve (2); the pressure reducing valve output interface (35) adopts a quick-connect interface, and is used to connect to a gas output pipeline.

3. The high-pressure gas storage device with integrated pressure control and monitoring according to claim 2, characterized in that: The pressure reducing valve (3) further comprises a plug (34), wherein the plug (34) is plugged into a machined hole of the pressure reducing valve body (32).

4. The high-pressure gas storage device with integrated pressure control and monitoring according to claim 2, characterized in that: The input interface component (31) is provided with a filter for blocking excess matter in the airflow.

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