Valve operating box for LNG storage tank

Abstract

The utility model relates to valve operation box technical field, concretely is a valve operation box for LNG storage tank, including operation box body, the inside of operation box body is provided with the buffer mechanism of preventing valve and so on parts, the side of operation box body is provided with the suction mechanism for the gas extraction of operation box body, the side fixedly connected with two symmetries of fixed block of operation box body, the suction mechanism includes the sleeve fixedly between two fixed blocks, the inside of sleeve slide bushing has the piston, one end of sleeve fixedly has the air inlet pipe of communication with operation box body inside, one end of sleeve fixedly has the air outlet pipe. In the utility model, through the piston, air inlet pipe, air outlet pipe and two one -way valve one's action can extract the air in operation box body, as far as possible avoid valve, electrical equipment and so on because of the moisture in the air in operation box body and rust, to can increase the service life of valve and electrical equipment and so on.

Description

Technical Field

[0001] This utility model relates to the field of valve control box technology, specifically a valve control box for LNG storage tanks. Background Technology

[0002] Liquefied gases are divided into high-pressure liquefied gases and low-pressure liquefied gases. Common types include petroleum liquefied gas, natural gas, and manufactured gas. They are commonly used in automobiles and in people's daily work and life. Therefore, the use of liquefied gases requires transportation, which requires the use of specific equipment, namely LNG storage tanks. LNG storage tanks are specially designed to store liquefied gases, and these LNG storage tanks have dedicated valve control boxes, which are used to control the opening and closing of electric valves.

[0003] Currently, existing control boxes, due to the electrical equipment, valves, and some sensitive components installed inside, require the box to be kept dry. Therefore, the control box is usually in a sealed state. However, the operation of electrical equipment generates heat, which gradually raises the temperature inside the control box, potentially causing some electrical equipment and sensitive components to malfunction. Moreover, each time a valve is opened, the box door is opened, allowing outside air to enter the control box. Especially in rainy weather, the air contains a large amount of moisture, and the moisture entering the control box can cause corrosion to valves and other components, preventing the valves from opening properly. Utility Model Content

[0004] The purpose of this invention is to provide a valve control box for LNG storage tanks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A valve control box for an LNG storage tank includes a control box body. The inside of the control box body is provided with a buffer mechanism to protect valves and other components. The side of the control box body is provided with a suction mechanism for extracting gas from the control box body. Two symmetrical fixing blocks are fixedly connected to the side of the control box body.

[0007] The suction mechanism includes a sleeve that passes through and is fixed between two fixed blocks. A piston is slidably sleeved inside the sleeve. An air inlet pipe that communicates with the inside of the control box body is fixed through one end of the sleeve. An air outlet pipe is fixed through one end of the sleeve. A one-way valve is provided on the outside of both the air inlet pipe and the air outlet pipe.

[0008] Furthermore, a pull rod that slides through the sleeve is fixedly connected to the side of the piston, and a spring is fixedly connected between the side of the piston and the sleeve and outside the pull rod.

[0009] Furthermore, a handle is fixedly connected to one end of the pull rod.

[0010] Furthermore, the buffer mechanism includes a rectangular shell fixedly connected to the front of the inside of the operating box body, a movable plate slidably connected inside the rectangular shell, an airbag fixedly connected between the movable plate and the inner side of the rectangular shell, a movable frame provided inside the operating box body, and connecting columns fixedly connected to the four corners of the back of the movable frame, which slide through the rectangular shell and are fixedly connected to the movable plate.

[0011] Furthermore, both ends of the movable frame are hinged with door panels.

[0012] Furthermore, multiple springs are fixedly connected between the edge of the movable plate and the inner side of the rectangular shell.

[0013] Furthermore, ventilation holes are provided on both ends of the operating box body. A storage basket is fixedly connected to the side of the operating box body away from the fixed block and corresponding to the ventilation hole. A wire mesh frame is inserted into the storage basket. A sealing shell that penetrates and is fixed to the air inlet pipe is fixedly connected to the side of the operating box body near the fixed block and corresponding to the ventilation hole. The storage basket has a wire mesh structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The air in the control box can be extracted by the piston, air inlet pipe, air outlet pipe and two one-way valves, so as to avoid corrosion of valves, electrical equipment and other components due to moisture in the air in the control box, thereby increasing the service life of valves and electrical equipment.

[0016] 2. The vibration generated during the operation of the liquefied gas transport vehicle causes the moving frame to move back and forth within the control box. The moving frame drives the moving plate to move, which can expel the gas in the airbag and cool the valves, electrical equipment, etc. Moreover, the reverse movement of the moving frame can release the pressure on multiple springs, causing the moving plate to drive the airbag back to its original shape and draw the gas in the storage tank into the airbag.

[0017] 3. By placing sponges and desiccants in the wire mesh frame, the moisture in the air entering the control box can be absorbed, preventing moisture in the air from corroding valves and other components. It can also make the pressure inside the control box the same as the external pressure, preventing the control box from deforming under pressure difference. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the control box body in this utility model;

[0020] Figure 3 This is a schematic diagram of the buffer mechanism structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the suction mechanism in this utility model.

[0022] In the diagram: 1. Control box body; 11. Storage basket; 12. Wire mesh frame; 13. Sealing shell; 14. Fixing block; 2. Buffer mechanism; 21. Rectangular shell; 22. Moving plate; 23. Airbag; 24. Moving frame; 25. Connecting column; 26. Door panel; 27. Spring 1; 3. Suction mechanism; 31. Sleeve; 32. Piston; 33. Air inlet pipe; 34. Air outlet pipe; 35. One-way valve 1; 36. Pull rod; 37. Spring 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 In this embodiment of the present invention, a valve operation box for an LNG storage tank includes an operation box body 1. The operation box body 1 is provided with a buffer mechanism 2 for protecting valves and other components. The side of the operation box body 1 is provided with a suction mechanism 3 for extracting gas from the operation box body 1. Two symmetrical fixing blocks 14 are fixedly connected to the side of the operation box body 1. The suction mechanism 3 includes a sleeve 31 that passes through and is fixed between the two fixing blocks 14. A piston 32 is slidably sleeved inside the sleeve 31. One end of the sleeve 31 is fixedly connected to an air inlet pipe 33 that communicates with the inside of the operation box body 1. One end of the sleeve 31 is fixedly connected to an air outlet pipe 34. One-way valves 35 are provided on the outside of both the air inlet pipe 33 and the air outlet pipe 34.

[0025] Specifically, firstly, various valves, electrical equipment, etc. are installed on the front of the buffer mechanism 2. After all equipment is installed, the door of the control box body 1 is closed to seal the control box body 1. Then, by moving the piston 32 inside the sleeve 31, the gas in the control box body 1 can be drawn into the sleeve 31 from the inlet pipe 33. Then, as the piston 32 moves in the opposite direction, the gas in the sleeve 31 can be forced out from the outlet pipe 34. Due to the action of the two one-way valves 35, when the piston 32 moves to draw the gas in the control box body 1 into the sleeve 31, the outlet pipe 34 is closed under the action of the one-way valve 35. When the piston 32 forces the gas in the sleeve 31 out from the outlet pipe 34, the inlet pipe 33 is closed under the action of the one-way valve 35. This can achieve the extraction of air from the control box body 1 and minimize the corrosion of valves, electrical equipment, etc. due to moisture in the air inside the control box body 1.

[0026] Example 1

[0027] like Figure 4 As shown, in this embodiment, a pull rod 36 that slides through the sleeve 31 is fixedly connected to the side of the piston 32. A spring 37 is fixedly connected between the side of the piston 32 and the sleeve 31 and outside the pull rod 36. A handle is fixedly connected to one end of the pull rod 36.

[0028] In this embodiment, by gripping the handle and moving the piston 32 in the sleeve 31, the air in the operating box body 1 is extracted. The spring 37 can retract the lever 36 into the sleeve 31, preventing the lever 36 from extending out of the sleeve 31 without human control.

[0029] Example 2

[0030] like Figure 3 As shown, in this embodiment, the buffer mechanism 2 includes a rectangular shell 21 fixedly connected to the front of the inside of the operation box body 1. A movable plate 22 is slidably connected inside the rectangular shell 21. An airbag 23 is fixedly connected between the movable plate 22 and the inner side of the rectangular shell 21. A movable frame 24 is provided inside the operation box body 1. Connecting posts 25 that slide through the rectangular shell 21 and are fixedly connected to the movable plate 22 are fixedly connected at the four corners of the back of the movable frame 24. Door panels 26 are hinged to both ends inside the movable frame 24. Multiple springs 27 are fixedly connected between the edge of the movable plate 22 and the inner side of the rectangular shell 21.

[0031] In this embodiment, a hollow rectangular frame is first installed on the front edge of the rectangular shell 21, and multiple air holes are opened on the inner side of the rectangular frame. Then, multiple hoses are connected between the airbag 23 and the rectangular frame to make the rectangular frame communicate with the interior of the airbag 23. Then, a gas storage tank is installed on the outside of the control box body 1, and the airbag 23 is connected to the interior of the gas storage tank through a gas pipe. One-way valves are provided at both the gas pipe and the hose. Then, valves, electrical equipment, etc. are installed on the front of the rectangular shell 21. Since the liquefied gas transport vehicle will vibrate during driving, and the moving frame 24 moves inside the control box body 1, the vibration generated during the driving of the liquefied gas transport vehicle will cause the moving frame 24 to move back and forth inside the control box body 1. The backward moving frame 24 drives the moving plate 22 to compress multiple springs 27 and force the gas in the airbag 23 out. Under the action of the one-way valve, the gas forced out of the airbag 23 can be prevented from flowing back into the gas storage tank, so that the gas forced out is sprayed out from the air holes on the inner side of the rectangular frame. It can cool valves, electrical equipment, etc. installed on the rectangular shell 21 (especially in hot summer when the temperature inside the control box 1 is relatively high). When the moving frame 24 moves forward, multiple springs 27 are released, causing the moving plate 22 to drive the airbag 23 to return to its original position. During the process of the airbag 23 returning to its original position, under the action of the one-way valve, the gas in the air tank is drawn into the airbag 23. (During the reverse movement of the moving plate 22, the space inside the airbag 23 gradually increases, forming a...) The negative pressure allows the gas in the gas tank to be drawn into the airbag 23. The vibration generated by the liquefied gas transport vehicle during operation causes the moving frame 24 to move back and forth within the control box body 1. The moving frame 24 drives the moving plate 22 to move, thus expelling the gas in the airbag 23 and cooling the valves, electrical equipment, etc. Moreover, the reverse movement of the moving frame 24 can release the pressure on multiple springs 27, causing the moving plate 22 to drive the airbag 23 back to its original state and draw the gas in the gas tank into the airbag 23.

[0032] Example 3

[0033] like Figure 2 As shown, in this embodiment, ventilation holes are provided through both ends of the operation box body 1. A storage basket 11 is fixedly connected to the side of the operation box body 1 away from the fixing block 14 and corresponding to the ventilation hole. A wire mesh frame 12 is inserted into the inside of the storage basket 11. A sealing shell 13 that is fixedly connected to the side of the operation box body 1 close to the fixing block 14 and corresponding to the ventilation hole is fixedly connected to the side of the operation box body 1 that is connected to the air inlet pipe 33. The storage basket 11 has a mesh structure.

[0034] In this embodiment, by stuffing a sponge and desiccant into the wire mesh frame 12 and then inserting the wire mesh frame 12 into the storage basket 11, and by fixing a sealing strip at the surface edge of the wire mesh frame 12, the sealing between the wire mesh frame 12 and the storage basket 11 can be increased, preventing air from flowing into the operating box body 1 from the gap between the wire mesh frame 12 and the storage basket 11. Each time the door of the operating box body 1 is closed, the gas in the operating box body 1 is extracted by the suction mechanism 3 to form a negative pressure. Then, the pressure inside the operating box body 1 and the external pressure will form a pressure difference, allowing the external air to pass through the sponge and desiccant. The sponge and desiccant can absorb the moisture in the air entering the operating box body 1, preventing the moisture in the air from corroding valves and other components. Moreover, it can make the pressure inside the operating box body 1 the same as the external pressure, preventing the operating box body 1 from deforming under pressure difference.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valve control box for an LNG storage tank, comprising a control box body (1), characterized in that, The operating box body (1) is provided with a buffer mechanism (2) inside, and a suction mechanism (3) for extracting gas from the operating box body (1) is provided on the side of the operating box body (1). Two symmetrical fixing blocks (14) are fixedly connected to the side of the operating box body (1). The suction mechanism (3) includes a sleeve (31) that passes through and is fixed between two fixed blocks (14). A piston (32) is slidably sleeved inside the sleeve (31). An air inlet pipe (33) that communicates with the inside of the operating box body (1) is fixed through one end of the sleeve (31). An air outlet pipe (34) is fixed through one end of the sleeve (31). A one-way valve (35) is provided on the outside of both the air inlet pipe (33) and the air outlet pipe (34).

2. The valve control box for LNG storage tanks according to claim 1, characterized in that, A pull rod (36) that slides through the sleeve (31) is fixedly connected to the side of the piston (32), and a spring (37) is fixedly connected between the side of the piston (32) and the sleeve (31) and outside the pull rod (36).

3. The valve control box for LNG storage tanks according to claim 2, characterized in that, A handle is fixedly connected to one end of the pull rod (36).

4. The valve control box for LNG storage tanks according to claim 3, characterized in that, The buffer mechanism (2) includes a rectangular shell (21) fixedly connected to the front of the inside of the operating box body (1). A movable plate (22) is slidably connected inside the rectangular shell (21). An airbag (23) is fixedly connected between the movable plate (22) and the inner side of the rectangular shell (21). A movable frame (24) is provided inside the operating box body (1). A connecting column (25) is fixedly connected to the four corners of the back of the movable frame (24), which slides through the rectangular shell (21) and is fixedly connected to the movable plate (22).

5. The valve control box for LNG storage tanks according to claim 4, characterized in that, Both ends of the movable frame (24) are hinged with door panels (26).

6. The valve control box for LNG storage tanks according to claim 5, characterized in that, Multiple springs (27) are fixedly connected between the edge of the movable plate (22) and the inner side of the rectangular shell (21).

7. The valve control box for LNG storage tanks according to claim 6, characterized in that, Ventilation holes are provided on both ends of the operation box body (1). A storage basket (11) is fixedly connected to the side of the operation box body (1) away from the fixing block (14) and corresponding to the ventilation hole. A wire mesh frame (12) is inserted into the inside of the storage basket (11). A sealing shell (13) that is fixedly connected to the side of the operation box body (1) close to the fixing block (14) and corresponding to the ventilation hole is fixedly connected to the side of the operation box body (1) and is fixedly connected to the air inlet pipe (33). The storage basket (11) is a mesh structure.

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