CN218480452U

CN218480452U - Device is prevented leaking in liquefied petroleum gas storage tank dehydration

Info

Publication number: CN218480452U
Application number: CN202222842353.9U
Authority: CN
Inventors: 张涛; 徐立超; 曾宪伟; 王威力; 谢宇翔; 朱雪银; 郭珍珍
Original assignee: Luoyang Lianhua Aoyou Chemical Industry Shares Co ltd
Current assignee: Luoyang Lianhua Aoyou Chemical Industry Shares Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-02-14
Anticipated expiration: 2032-10-27

Abstract

The utility model belongs to the technical field of the liquefied petroleum gas storage tank dehydration, specifically be a device is prevented leaking in liquefied petroleum gas storage tank dehydration, including control valve and flange, the control valve passes through flange and links to each other with the liquefied petroleum gas storage tank, still includes spring valve and retrieves the jar, and the lower surface of control valve is provided with the switching pipe, and switching pipe one side is provided with retrieves the jar, and the lower surface of switching pipe is provided with the spring valve, and the lower surface of spring valve is provided with the fluid-discharge tube, the inside feed liquor pipe that is provided with of spring valve, and feed liquor pipe lower surface is provided with the case, and the lower surface of case passes through the baffle and links to each other with the valve rod. Has the advantages that: the utility model discloses a spring valve and the setting of retrieving the jar can prevent that the control gate valve from closing not tight when the liquefied petroleum gas storage tank dehydration operation to the liquefied petroleum gas that leads to leaks to collect in retrieving the jar with the liquefied petroleum gas who reveals, thereby avoid liquefied petroleum gas to reveal and cause the potential safety hazard.

Description

Device is prevented leaking in liquefied petroleum gas storage tank dehydration

Technical Field

The utility model relates to a liquefied petroleum gas storage tank dehydration technical field especially relates to a device is prevented leaking in liquefied petroleum gas storage tank dehydration.

Background

The dehydration operation of the liquefied petroleum gas storage tank belongs to daily routine operation, the operation frequency is high, and the operation process is relatively simple. However, when flammable and explosive media are involved, if the flammable and explosive media cannot be effectively managed and controlled, the flammable and explosive media may leak, and the risk of fire and explosion may occur. Especially, in the dehydration process, liquefied petroleum gas is changed from liquid to gas under the normal pressure state, and the phenomena of frosting and icing of pipelines can occur due to heat absorption in the gasification process, so that the control gate valve is easy to be not tightly closed, and the liquefied petroleum gas is easy to leak. Therefore, the utility model provides a liquefied petroleum gas storage tank dehydration prevents leaking device and solves this type of problem.

Disclosure of Invention

The utility model aims at providing a device is prevented leaking in order to solve above-mentioned problem by the liquefied petroleum gas storage tank dehydration.

The utility model discloses a following technical scheme realizes above-mentioned purpose: the utility model provides a device is prevented leaking in liquefied petroleum gas storage tank dehydration, including control valve and flange, the control valve passes through flange and links to each other with the liquefied petroleum gas storage tank, still include the spring valve and retrieve the jar, the lower surface of control valve is provided with the switching pipe, switching pipe one side is provided with retrieves the jar, the lower surface of switching pipe is provided with the spring valve, the lower surface of spring valve is provided with the fluid-discharge tube, the inside feed liquor pipe that is provided with of spring valve, feed liquor pipe lower surface is provided with the case, the lower surface of case passes through the baffle and links to each other with the valve rod, the inside hollow structure that is of valve rod, and the valve rod outside is provided with the spring, the spring lower surface is provided with the mounting panel with the valve rod outside, mounting panel and valve rod sliding connection, the mounting panel is fixed on the flange of spring valve.

Furthermore, the middle part of the lower surface of the valve core is provided with a blind hole, the outer side of the valve core is provided with at least two holes, and the holes are obliquely arranged and uniformly distributed on the outer side of the valve core.

Furthermore, the size of the blind hole in the valve core is consistent with the size of the inner hole of the valve rod.

Furthermore, a cavity convenient for liquid circulation is formed between the baffle plate and the liquid inlet pipe.

Furthermore, the front side of retrieving the jar is provided with the manometer, retrieves jar and passes through the flange with the switching pipe and link to each other, and is close to switching pipe department and is provided with the solenoid valve.

Further, the control valve mainly comprises a valve body, a connecting rod and a valve, the upper surface of the valve body is connected with the connecting flange, one side of the valve body is rotatably connected with the connecting rod through the flange, and one end, deviating from the flange, of the connecting rod is connected with the valve.

Furthermore, the control valve is connected with the switching pipe through two flanges, the switching pipe is connected with the spring valve through two flanges, and the spring valve is connected with the liquid discharge pipe through two flanges, and sealing rings are arranged between the two flanges.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a spring valve and the setting of retrieving the jar can prevent that the control gate valve from closing not tight when the liquefied petroleum gas storage tank dehydration operation to the liquefied petroleum gas that leads to leaks to collect in retrieving the jar with the liquefied petroleum gas who reveals, thereby avoid liquefied petroleum gas to reveal and cause the potential safety hazard.

Drawings

FIG. 1 is a view showing a structure of a dehydration leakage preventing apparatus for a liquefied petroleum gas storage tank;

fig. 2 is an internal structural view of the spring valve.

Reference numerals: 1. a valve body; 2. a connecting flange; 4. a connecting rod; 5. a valve; 7. a transfer tube; 9. a spring valve; 10. a liquid discharge pipe; 12. a recovery tank; 13. a pressure gauge; 14. a liquid inlet pipe; 15. a valve core; 16. a valve stem; 17. a baffle plate; 18. a spring; 19. mounting a plate; 20. a cavity; 21. and (4) a hole.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-2, a dehydration leakage-proof device for a liquefied petroleum gas storage tank comprises a control valve and a connecting flange 2, wherein the control valve is connected with the liquefied petroleum gas storage tank through the connecting flange 2, the dehydration leakage-proof device further comprises a spring valve 9 and a recovery tank 12, an adapter pipe 7 is arranged on the lower surface of the control valve, the recovery tank 12 is arranged on one side of the adapter pipe 7, the spring valve 9 is arranged on the lower surface of the adapter pipe 7, a liquid discharge pipe 10 is arranged on the lower surface of the spring valve 9, a liquid inlet pipe 14 is arranged inside the spring valve 9, a valve core 15 is arranged on the lower surface of the liquid inlet pipe 14, the lower surface of the valve core 15 is connected with a valve rod 16 through a baffle 17, the valve rod 16 is internally hollow, a spring 18 is arranged on the outer side of the valve rod 16, a mounting plate 19 is arranged on the lower surfaces of the spring 18 and the valve rod 16, the mounting plate 19 is connected with the valve rod 16 in a sliding manner, and the mounting plate 19 is fixed on the flange of the spring valve 9.

Specifically, the upper end of the valve core 15 is conical, a rubber ring is embedded into the conical surface, and the conical surface of the valve core 15 corresponds to the lower end of the liquid inlet pipe 14, so that the valve core 15 and the liquid inlet pipe 14 are matched to form a sealing structure. And the baffle plate 17, the valve rod 16 and the valve core 15 can slide upwards under the action of the spring 18, so that the valve core 15 is blocked below the liquid inlet pipe 14 to form a one-way flow structure.

When the liquefied petroleum gas storage tank is in dehydration operation, because the liquefied petroleum gas absorbs heat when being changed from liquid to gas under the normal pressure state, the conditions of frosting, icing and the like of a pipeline can occur, the control gate valve is not closed tightly, and the liquefied petroleum gas is leaked. Because the valve core 15 blocks the liquid inlet pipe 14 under the action of the spring 18, the leaked liquefied petroleum gas enters the recovery tank 12 through the adapter pipe 7 to be collected.

Further, the middle part of the lower surface of the valve core 15 is provided with a blind hole, the outer side of the valve core 15 is provided with at least two holes 21, and the holes 21 are obliquely arranged and uniformly distributed on the outer side of the valve core 15.

Specifically, the number of the holes 21 on the outer side surface of the valve core 15 is four, and the holes 21 are uniformly distributed at 90 degrees, the holes 21 are arranged on the vertical surface of the valve core 15, and the holes 21 are communicated with the blind holes.

More specifically, the size of the blind hole in the valve core 15 is consistent with the size of the inner hole of the valve rod 16.

Further, a cavity 20 for facilitating the liquid circulation is formed between the baffle 17 and the liquid inlet pipe 14. When the shutter 17 is moved downwards, the cavity 20 is in communication, and the liquid enters the cavity 20 through the inlet pipe 14, then enters the inside of the stem 16 through the hole 21 of the valve element 15 and exits through the discharge pipe 10.

Further, a pressure gauge 13 is arranged on the front side of the recovery tank 12, the recovery tank 12 is connected with the adapter tube 7 through a flange, and an electromagnetic valve is arranged at a position close to the adapter tube 7.

Specifically, manometer 13 can detect the pressure in recovery tank 12, and recovery tank 12 bottom is provided with the recovery tube, is provided with the solenoid valve on the recovery tank, and when recovery tank 12 internal pressure value was too big, the solenoid valve on the recovery tube can be opened, and the liquefied petroleum gas that the storage tank revealed is collected in recovery tank 12 is carried to special processing apparatus and is handled.

Further, the control valve mainly includes valve body 1, connecting rod 4 and valve 5 and links to each other, and 1 upper surface of valve body links to each other with flange 2, and 1 one side of valve body is passed through the flange and is connected with the rotation of connecting rod 4, and connecting rod 4 deviates from the one end of flange and links to each other with valve 5, and the accessible rotates valve 5, makes the space that forms the circulation in the valve body 1 to the water discharge who deviates from liquefied petroleum gas.

Further, the control valve is connected with the switching pipe 7 through two flanges, the switching pipe 7 is connected with the spring valve 9 through two flanges, the spring valve 9 is connected with the liquid discharge pipe 10 through two flanges, a sealing ring is arranged between the two flanges, and the sealing ring can guarantee the sealing performance of the connecting position.

The utility model discloses a theory of operation and use flow: in the dehydration process, the electromagnetic valve between the recovery tank 12 and the adapter tube 7 is closed, then the valve 5 is rotated to form a circulating space in the valve body 1, so that water removed from the liquefied petroleum gas enters the spring valve 9 through the adapter tube 7, when the water pressure in the adapter tube 7 is greater than the elastic force of the spring 18, the valve core 15, the valve rod 16 and the baffle plate 17 press the spring 18, so that a cavity 20 between the liquid inlet pipe 14 and the baffle plate 17 is circulated, and the water in the adapter tube 7 enters the valve rod 16 through a hole on the outer side of the valve core 15 and is discharged from the liquid discharge pipe 10.

After the dehydration is finished, the valve 5 is rotated to close the interior of the valve body 1, the baffle plate 17, the valve rod 16 and the valve core 15 can slide upwards under the action of the spring 18, and the valve core 15 is blocked below the liquid inlet pipe 14 to form a one-way circulation structure.

When the liquefied petroleum gas storage tank is used for dehydration, because the liquefied petroleum gas absorbs heat when being changed from liquid to gas under the normal pressure state, the situations of frosting, icing and the like of a pipeline can occur, and therefore after the dehydration operation is finished, the control gate valve is not closed tightly, and the liquefied petroleum gas is leaked. Because the valve core 15 blocks the liquid inlet pipe 14 under the action of the spring 18, the leaked liquefied petroleum gas enters the recovery tank 12 through the adapter pipe 7 to be collected. When the pressure value in the recovery tank 12 is too large, the electromagnetic valve on the recovery pipe can be opened, and the liquefied petroleum gas leaked from the collection storage tank in the recovery tank 12 is conveyed to a special processing device for processing.

It should be noted that the input terminals of the solenoid valves disclosed in this embodiment are electrically connected to the output terminal of the external circuit, and the solenoid valves are controlled by the external control switch set.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in fig. 1, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a device is prevented leaking in liquefied petroleum gas storage tank dehydration, includes control valve and flange (2), the control valve passes through flange (2) and links to each other its characterized in that with the liquefied petroleum gas storage tank: the spring valve is characterized by further comprising a spring valve (9) and a recovery tank (12), wherein a switching pipe (7) is arranged on the lower surface of the control valve, the recovery tank (12) is arranged on one side of the switching pipe (7), the spring valve (9) is arranged on the lower surface of the switching pipe (7), a liquid discharge pipe (10) is arranged on the lower surface of the spring valve (9), a liquid inlet pipe (14) is arranged inside the spring valve (9), a valve core (15) is arranged on the lower surface of the liquid inlet pipe (14), the lower surface of the valve core (15) is connected with a valve rod (16) through a baffle (17), the valve rod (16) is internally of a hollow structure, a spring (18) is arranged outside the valve rod (16), a mounting plate (19) is arranged on the lower surface of the spring (18) and the outer side of the valve rod (16), the mounting plate (19) is slidably connected with the valve rod (16), and the mounting plate (19) is fixed on a flange of the spring valve (9).

2. The lpg tank dehydration leakage prevention device as recited in claim 1, wherein: the lower surface middle part of case (15) is provided with the blind hole, and the outside of case (15) has been seted up and has been no less than two holes (21), and this hole (21) slope sets up and the equipartition is in the outside of case (15).

3. The lpg tank dehydration leakage prevention device as recited in claim 2, wherein: the size of a blind hole in the valve core (15) is consistent with the size of an inner hole of the valve rod (16).

4. The lpg tank dehydration leakage prevention device as recited in claim 1, wherein: a cavity (20) convenient for liquid circulation is formed between the baffle plate (17) and the liquid inlet pipe (14).

5. The lpg tank dehydration leakage prevention device as recited in claim 1, wherein: the front side of the recovery tank (12) is provided with a pressure gauge (13), the recovery tank (12) is connected with the adapter tube (7) through a flange, and an electromagnetic valve is arranged at a position close to the adapter tube (7).

6. The liquefied petroleum gas storage tank dehydration leakage prevention apparatus according to claim 1, wherein: the control valve mainly comprises a valve body (1), a connecting rod (4) and a valve (5) which are connected, wherein the upper surface of the valve body (1) is connected with a connecting flange (2), one side of the valve body (1) is rotatably connected with the connecting rod (4) through a flange, and one end of the connecting rod (4) departing from the flange is connected with the valve (5).

7. The lpg tank dehydration leakage prevention device as recited in claim 1, wherein: the control valve is connected with the switching pipe (7), the switching pipe (7) is connected with the spring valve (9), the spring valve (9) is connected with the liquid discharge pipe (10) through two flanges, and a sealing ring is arranged between the two flanges.