Thin oil sealed gas tank piston discharge device and thin oil sealed gas tank

Abstract

The present invention discloses a piston discharge device for a thin oil sealed gas tank, which comprises a liquid storage tank, a discharge pipe and an overflow pipe. The liquid storage tank is located below the piston of the thin oil sealed gas tank, and the overflow pipe is installed on the overflow port on the upper part of the liquid storage tank. The discharge pipe is placed vertically, and its lower end is inserted into the accumulated water inside the liquid storage tank and is lower than the overflow port of the liquid storage tank. The upper end is fixed on the piston of the thin oil sealed gas tank and communicates with the upper space of the piston. The present invention also provides a thin oil sealed gas tank including the automatic oil water discharge device. The present invention utilizes the discharge pipe to discharge the accumulated water and oil on the piston of the thin oil sealed gas tank, and cleverly designs a sealing mechanism composed of the liquid storage tank, the overflow pipe, etc. The device can not only smoothly discharge the accumulated water and oil on the piston, but also has good sealing performance, which can effectively prevent the leakage of gas in the gas tank and ensure the safe operation of the gas tank.

Description

Technical Field

[0001] The invention relates to a piston liquid discharge device for a thin oil sealed gas cabinet and a thin oil sealed gas cabinet equipped with the piston liquid discharge device, belonging to the technical field of gas storage. Background Art

[0002] The thin oil sealed gas tank is also called the Man-type tank. Its shape is a regular polygon. The exterior is a regular polygon prism reinforced shell structure composed of columns and L-shaped steel side panels. The interior consists of three major parts: the cabinet, the cabinet top and the piston. In addition, there are some auxiliary facilities, such as external elevators, external stairs, various gas release pipes, etc. In order to save floor space, gas tanks are generally built relatively high. For example, the total height of a 100,000 cubic meter gas tank is 81.4 meters. During the operation of the gas tank, the sealing oil in the oil groove at the bottom of the cabinet flows into the oil-water separator for oil-water separation, and then is transported by the oil pump to the high-level oil tank on the upper part of the gas tank body. The sealing oil then falls into the piston oil tank along the cabinet wall through the overflow port between the oil tank and the cabinet wall. Due to the large height difference between the upper oil tank and the piston of the gas tank, and the insufficient machining precision of the gas tank, part of the sealing oil splashes onto the piston. In addition, the aging of the gas tank and the corrosion of the cabinet top plate will also cause rainwater to enter the gas tank piston. If these sealing oil and rainwater cannot be discharged in time, the gas tank piston will tilt, which will lead to gas leakage, thus affecting the normal operation of the gas tank. However, the existing drainage devices generally do not have good sealing performance and cannot be used in gas tanks. Therefore, it is very necessary to design an oil and water drainage device with good sealing and drainage effects. Summary of the invention

[0003] The purpose of the present invention is to address the drawbacks of the prior art and provide a thin oil sealed gas tank piston displacement device and a thin oil sealed gas tank equipped with the piston displacement device to prevent gas leakage caused by piston tilting and ensure the safe operation of the gas tank.

[0004] To achieve the above object, the present invention adopts the following technical solution:

[0005] A piston discharge device for a thin oil sealed gas tank comprises a liquid storage tank, a discharge pipe and an overflow pipe. The liquid storage tank is located below the piston of the thin oil sealed gas tank, and the overflow pipe is installed on the overflow port on the upper part of the liquid storage tank. The discharge pipe is placed vertically, with its lower end inserted into the accumulated water inside the liquid storage tank and lower than the overflow port of the liquid storage tank, and its upper end is fixed on the piston of the thin oil sealed gas tank and communicated with the space above the piston.

[0006] The above-mentioned thin oil sealed gas tank piston discharge device also includes a spring and a sealing plug, both of which are located in the discharge pipe. The sealing plug is in sliding contact with the inner wall of the discharge pipe. The upper end of the spring is connected to the sealing plug, and the lower end is fixedly connected to the discharge pipe. A discharge hole is provided on the side wall of the discharge pipe, and the discharge hole is lower than the overflow port of the liquid storage tank.

[0007] The above-mentioned thin oil sealed gas tank piston discharge device has a drain pipe at the lower part of the liquid storage tank, and a drain valve is provided on the drain pipe.

[0008] The above-mentioned thin oil sealed gas tank piston displacement device has a sealing oil layer on the upper part of the accumulated water in the liquid storage tank.

[0009] The above-mentioned thin oil sealed gas tank piston discharge device, the upper end of the discharge pipe is provided with a threaded plug.

[0010] In the above-mentioned thin oil sealed gas tank piston discharge device, the distance from the lower end of the discharge pipe to the bottom of the liquid storage tank is 90mm to 110mm.

[0011] The above-mentioned thin oil sealed gas tank piston discharge device, the length of the discharge pipe is the height of the water column corresponding to the pressure of the gas tank plus 500mm.

[0012] The present invention uses a drain pipe to discharge the accumulated water and oil on the piston of the thin oil sealed gas tank, and cleverly designs a sealing mechanism consisting of a liquid storage tank, an overflow pipe, etc. The device can not only smoothly discharge the accumulated water and oil on the piston, but also has good sealing performance, which can effectively prevent the leakage of gas in the gas tank and ensure the safe operation of the gas tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the spring in free state;

[0016] Figure 3 Schematic diagram of the spring in compressed state.

[0017] In the figure: 1, liquid storage tank, 2, drain pipe, 3, overflow pipe, 4, sewage pipe, 5, sewage valve, 6, sealing oil layer, 7, thread plug, 8, spring, 9, sealing plug, 10, drainage hole, 11, piston, 12, accumulated water. DETAILED DESCRIPTION

[0018] The invention provides a thin oil sealed gas cabinet piston liquid discharge device and a thin oil sealed gas cabinet, which solve the problems of the prior art that the gas cabinet piston is tilted, the safety is poor, and the maintenance is time-consuming and labor-intensive.

[0019] Embodiment 1:

[0020] See also Figure 1 The present invention mainly includes a liquid storage tank 1, a liquid discharge pipe 2, an overflow pipe 3, a sewage pipe 4, a sewage valve 5, a sealing oil layer 6 and a screw plug 7.

[0021] The upper end of the discharge pipe 2 is connected to the bottom of the piston 11, and the lower end extends into the liquid storage tank 1. The overflow pipe 3 is installed on the overflow port of the liquid storage tank 1, and the position of the overflow port is higher than the height of one end of the discharge pipe 2 extending into the liquid storage tank 1.

[0022] In this embodiment, the accumulated water and oil on the piston 11 enter the liquid storage tank 1 through the drain pipe 2, and the oil and water in the liquid storage tank 1 are discharged to the bottom of the cabinet through the overflow pipe 3. One end of the drain pipe 2 extends into the liquid storage tank 1, and the overflow pipe 3 is higher than the height of the lower end of the drain pipe 2, ensuring that the end of the drain pipe 2 extending into the liquid storage tank 1 is always in a water-sealed state to prevent gas leakage. This device can effectively remove the accumulated water and oil on the piston 11, and avoid gas leakage caused by the tilt of the gas tank piston 11 due to the accumulated water and oil.

[0023] The height of one end of the drain pipe 2 extending into the liquid storage tank 1 from the bottom of the liquid storage tank 1 is 90 mm to 110 mm, which can ensure the sealing performance and avoid the blockage of the drain pipe 2, thereby enhancing the drainage effect and operation reliability.

[0024] The drain pipe 4 is arranged at the lower part of the liquid storage tank 1 , the connection between the drain pipe 4 and the liquid storage tank 1 is lower than the connection between the overflow pipe 3 and the liquid storage tank 1 (ie, the overflow port), and the drain valve 5 is arranged on the drain pipe 4 .

[0025] The arrangement of the drain pipe 4 and the drain valve 5 is conducive to cleaning the debris in the liquid storage tank 1 during maintenance. During the drainage process, the drain valve 5 is in a closed state and is opened during maintenance, which saves time and effort and is highly practical.

[0026] The height of the drain pipe 2 is the height of the water column corresponding to the pressure of the gas tank plus 500 mm, which ensures the safety of the automatic oil and water drainage device and enhances reliability.

[0027] A sealing oil layer 6 is provided above the accumulated water in the liquid storage tank 1 , and the sealing oil layer 6 can seal the accumulated water in the liquid storage tank 1 to prevent the water in the liquid storage tank 1 from evaporating.

[0028] One end of the drain pipe 2 connected to the bottom of the piston 11 is provided with an internal thread matching the screw plug 7. The screw plug 7 is installed at the upper end of the drain pipe 2, which is conducive to sealing the drain pipe 2. When there is obviously oil and water on the piston 11, the screw plug 7 is opened to drain water to ensure the sealing.

[0029] Embodiment 2:

[0030] See also Figure 2 and Figure 3 In addition to the liquid storage tank 1, the drain pipe 2, the overflow pipe 3, the sewage pipe 4, the sewage valve 5, the sealing oil layer 6, and the thread plug 7, the present invention also includes a spring 8 and a sealing plug 9.

[0031] The spring 8 is arranged in the drain pipe 2 , and the lower end is fixed on the drain pipe 2 . The sealing plug 9 is also arranged in the drain pipe 2 , and the sealing plug 9 is connected to the upper end of the spring 8 .

[0032] A drainage hole 10 is provided on the side wall of the drainage pipe 2, and the drainage hole 10 is located below the overflow pipe 3. When the spring 8 is in a free state, the sealing plug 9 is located above the drainage hole 10, and when the spring 8 is in a compressed state, the sealing plug 9 is located below the drainage hole 10.

[0033] When there is less water on the piston 11, the spring 8 is in a free state. At this time, the sealing plug 9 is located above the drainage hole 10, sealing the piston 11 and the drainage pipe 2 to ensure the sealing of the device; when there is more water and oil on the piston 11, the sealing plug 9 slides downward under the action of pressure to compress the spring 8. When the sealing plug 9 slides below the drainage hole 10, water and oil flow into the liquid storage tank 1 from the drainage hole 10, thereby draining water and oil from the piston 11. The device is ingeniously and reasonably designed, has strong sealing performance, and is safe and reliable in operation.

[0034] The present invention further provides a thin oil sealed gas cabinet, comprising an oil and water drainage device, wherein the oil and water drainage devices are multiple and evenly arranged below the piston 11 .

[0035] The area of ​​the gas tank piston 11 is relatively large, so multiple oil and water drainage devices are provided in this embodiment to ensure the balance of the gas tank piston 11, avoid the gas tank piston 11 from tilting due to uneven outflow of accumulated water and oil, and prevent gas leakage.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A piston discharge device for a thin oil sealed gas tank, characterized in that: It comprises a liquid storage tank (1), a liquid discharge pipe (2) and an overflow pipe (3), wherein the liquid storage tank (1) is located below a piston (11) of a thin oil sealed gas tank, and the overflow pipe (3) is installed on an overflow port on the upper part of the liquid storage tank (1). The liquid discharge pipe (2) is placed vertically, with its lower end inserted into the accumulated water (12) inside the liquid storage tank (1) and lower than the overflow port of the liquid storage tank (1), and its upper end fixed on the piston (11) of the thin oil sealed gas tank and connected to the space above the piston (11); It also includes a spring (8) and a sealing plug (9), both of which are located in the drainage pipe (2), the sealing plug (9) is in sliding contact with the inner wall of the drainage pipe (2), the upper end of the spring (8) is connected to the sealing plug (9), and the lower end is fixedly connected to the drainage pipe (2), and a drainage hole (10) is provided on the side wall of the drainage pipe (2), and the drainage hole (10) is lower than the overflow port of the liquid storage tank (1); A sealing oil layer (6) is provided above the accumulated water (12) in the liquid storage tank (1); A threaded plug (7) is provided at the upper end of the drainage pipe (2).

2. The piston displacement device of a thin oil sealed gas tank according to claim 1 is characterized in that: A sewage discharge pipe (4) is provided at the lower part of the liquid storage tank (1), and a sewage discharge valve (5) is provided on the sewage discharge pipe (4).

3. The piston displacement device of a thin oil sealed gas tank according to claim 2 is characterized in that: The distance between the lower end of the drainage pipe (2) and the bottom of the liquid storage tank (1) is 90 mm to 110 mm.

4. The piston displacement device of a thin oil sealed gas tank according to claim 3 is characterized in that: The length of the drain pipe (2) is the height of the water column corresponding to the pressure of the gas tank plus 500 mm.

5. A thin oil sealed gas tank, characterized in that: The lower part of the piston (11) of the thin oil sealed gas tank is equipped with a thin oil sealed gas tank piston displacement device as described in any one of claims 1 to 4, and a plurality of thin oil sealed gas tank piston displacement devices are provided, which are evenly distributed under the piston (11).

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