CN220956899U

CN220956899U - Novel refrigerant supplementing valve for liquefied natural gas

Info

Publication number: CN220956899U
Application number: CN202322987747.8U
Authority: CN
Inventors: 赵彪; 干欣; 赵杰
Original assignee: Shaanxi Yanchang Oil And Gas Co ltd
Current assignee: Shaanxi Yanchang Oil And Gas Co ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-05-14
Anticipated expiration: 2033-11-07

Abstract

The utility model discloses a novel liquefied natural gas refrigerant supplementing valve, which relates to the technical field of valves and comprises a valve body and a supplementing pipe, wherein the supplementing pipe is fixedly sleeved at the middle part of the upper side of the valve body, and a joint is fixedly arranged at the upper end of the supplementing pipe; the inside of the valve body is provided with two pistons in a sliding manner, a filling pipe is sleeved between the two pistons in a rotating manner, one end of the filling pipe extends to the outside of the valve body or a pipeline, the outer wall of one side of the filling pipe is positioned between the two pistons and is communicated with a discharging pipe, and one end of the discharging pipe is fixedly connected with the filling pipe; a cavity is formed in one side of the inner portion of the valve body. The utility model has good sealing performance, controls the opening degree of the valve and has the function of timing closing, can effectively prevent the condition of discharging when the refrigerant filling equipment is pulled out, can solve the problem of excessive refrigerant supplement caused by internal leakage of the valve and overlong valve opening time, and basically avoids abnormal fluctuation of the system.

Description

Novel refrigerant supplementing valve for liquefied natural gas

Technical Field

The utility model relates to the technical field of valves, in particular to a novel liquefied natural gas refrigerant supplementing valve.

Background

LNG is a fuel widely used in the energy industry, but requires special equipment and technology to maintain its liquid state at low temperatures during transportation and storage, one of the key devices is a make-up valve for controlling the flow and pressure of the refrigerant in the LNG system.

The traditional novel refrigerant supplementing valve for liquefied natural gas generally needs to be closed after the refrigerant filling equipment is pulled out, so that partial refrigerant leakage can be caused between the pulling out of the refrigerant filling equipment and the closing of the valve, economic loss is caused, and certain potential safety hazard exists.

Disclosure of utility model

The present utility model has been made in view of the above-mentioned problems with the existing lng new refrigerant replenishment valves.

Therefore, the utility model aims to provide the novel liquefied natural gas refrigerant supplementing valve, which solves the problems that in the prior art, the novel liquefied natural gas refrigerant supplementing valve is usually required to be closed after a refrigerant filling device is pulled out, so that part of refrigerant is leaked between the time of pulling out the refrigerant filling device and closing the valve, economic loss is caused, and a certain potential safety hazard exists.

In order to achieve the above object, the present utility model provides the following technical solutions:

The novel liquefied natural gas refrigerant supplementing valve comprises a valve body and a supplementing pipe, wherein the supplementing pipe is fixedly sleeved at the middle part of the upper side of the valve body, and a joint is fixedly arranged at the upper end of the supplementing pipe;

The inside of the valve body is provided with two pistons in a sliding manner, a filling pipe is sleeved between the two pistons in a rotating manner, one end of the filling pipe extends to the outside of the valve body, a discharging pipe is arranged on the outer wall of one side of the filling pipe and positioned between the two pistons in a communicating manner, and one end of the discharging pipe is fixedly connected with the filling pipe;

A cavity is formed in one side of the inner portion of the valve body, and a reset mechanism for driving the piston to reset is arranged in the cavity.

Preferably, the reset mechanism comprises a baffle and springs, the baffle is slidably arranged in the cavity, the rotary sleeve of the filling pipe is arranged in the middle of the baffle, the springs are fixedly arranged at two ends of one side, far away from the piston, of the baffle, and the other ends of the springs are fixedly connected with the inner wall of the cavity.

Preferably, the filling pipe is close to the fixed U template that is provided with of one end of baffle, the inside one side of cavity is fixed and is provided with the limiting plate.

Preferably, an exhaust hole is formed in one side, away from the piston, of the cavity.

Preferably, a connecting ring is fixedly arranged at one end of the filling pipe, which is far away from the baffle plate.

Preferably, sliding rods are fixedly arranged on two sides of the inside of the cavity, and two ends of the baffle are movably sleeved with the corresponding sliding rods respectively.

Preferably, an electromagnetic valve is arranged in the mounting joint, and a remote control module is electrically connected to the electromagnetic valve.

In the technical scheme, the utility model has the technical effects and advantages that:

1. According to the utility model, the refrigerant filling equipment is inserted into the filling pipe, so that the discharge hole of the refrigerant filling equipment is aligned with the discharge pipe, then the filling equipment is fixedly connected with the connecting ring, then the filling pipe is pushed into the valve body, the discharge pipe is moved to the lower part of the supplementing pipe, and then the filling pipe is rotated, so that the discharge pipe is propped against the supplementing pipe, and normal filling work can be performed.

2. According to the utility model, after filling, the discharging pipe is rotated to be in contact with the inner wall of the valve body, so that the refrigerant cannot flow back from the discharging pipe, then the two pistons are reset, and the supplementing pipe is blocked by the piston at one side, so that the refrigerant cannot leak from the supplementing pipe, namely, the valve has good sealing performance, and the refrigerant can be effectively prevented from leaking.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of a novel liquefied natural gas refrigerant replenishment valve according to the present utility model;

FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;

Fig. 3 is a perspective view of the U-shaped plate of fig. 1.

Reference numerals illustrate:

1. A valve body; 2. a replenishment pipe; 3. installing a joint; 4. a piston; 5. a spring; 6. a filling pipe; 7. a discharge pipe; 8. a connecting ring; 9. a baffle; 10. a U-shaped plate; 11. a limiting plate; 12. and a slide bar.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a novel liquefied natural gas refrigerant supplementing valve.

Referring to fig. 1-3, a novel liquefied natural gas refrigerant supplementing valve comprises a valve body 1 and a supplementing pipe 2, wherein the supplementing pipe 2 is fixedly sleeved at the middle part of the upper side of the valve body 1, a connector 3 is fixedly arranged at the upper end of the supplementing pipe 2, an electromagnetic valve is arranged in the connector 3, and a remote control module is electrically connected in the electromagnetic valve, so that the valve body is conveniently and remotely controlled;

The inside slip of valve body 1 is provided with two pistons 4, rotates the cover between two pistons 4 and is equipped with filling pipe 6, and the one end of filling pipe 6 extends to the outside of valve body 1, and the one end that baffle 9 was kept away from to filling pipe 6 is fixed to be provided with go-between 8, conveniently is connected refrigerant filling equipment and filling pipe 6 fixedly, and the one side outer wall of filling pipe 6 just is located the intercommunication between two pistons 4 and is provided with discharging pipe 7, and the one end and the filling pipe 6 fixed connection of discharging pipe 7.

Referring to fig. 1-3, the cavity has been seted up to inside one side of valve body 1, the inside of cavity is provided with the canceling release mechanical system that drives piston 4 and resets, canceling release mechanical system includes baffle 9 and spring 5, baffle 9 slides and sets up in the inside of cavity, the middle part of baffle 9 is located to the rotation cover of filling tube 6, two fixed settings in baffle 9 are kept away from the one side both ends of piston 4, the other end and the inner wall fixed connection of cavity of two springs 5, the exhaust hole has been seted up to one side that the cavity kept away from piston 4 for baffle 9 can smooth and easy slip, the inside both sides of cavity are all fixed and are provided with slide bar 12, the both ends of baffle 9 cup joint with the activity of corresponding slide bar 12 respectively, make baffle 9 unable rotation, can stable slip.

Referring to fig. 1-3, a U-shaped plate 10 is fixedly arranged at one end of the filling pipe 6, which is close to the baffle 9, a limiting plate 11 is fixedly arranged at one side of the inside of the cavity, when the filling pipe 6 moves towards the valve body, the U-shaped plate 10 can be moved to the lower side of the limiting plate 11, when the filling pipe 6 rotates the discharging pipe 7 to be propped against the supplementing pipe 2, the U-shaped plate 10 can be rotationally sleeved outside the limiting plate 11, so that the filling pipe 6 can be limited, and stable refrigerant filling work is ensured.

In the utility model, when in use, refrigerant filling equipment is inserted into a filling pipe 6, so that a discharge hole of the refrigerant filling equipment is aligned with a discharge pipe 7, then the filling equipment is fixedly connected with a connecting ring 8, then the filling pipe 6 is pushed into a valve body 1, the discharge pipe 7 is moved to the lower part of a supplementing pipe 2, then the filling pipe 6 is rotated, so that the discharge pipe 7 is abutted against the supplementing pipe 2, normal filling work can be carried out, after filling is finished, the discharge pipe 7 is rotated to be abutted against the inner wall of the valve body 1, so that the refrigerant cannot flow back from the discharge pipe 7, then two pistons 4 are reset, and one side piston 4 plugs the supplementing pipe 2, so that the refrigerant cannot leak out from the supplementing pipe 2, namely, the refrigerant can be effectively prevented from leaking out;

When the valve is in remote control, limiting the maximum value of the opening of the valve to 30% by the program locking requirement, and automatically closing the valve after opening for 30 minutes at most; the method can essentially avoid the consequences of increased load, increased current, surge of the compressor, interlocking shutdown exceeding rated current and the like caused by excessive replenishment of the refrigerant due to forgetting to close after the valve is opened.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The novel liquefied natural gas refrigerant supplementing valve comprises a valve body (1) and a supplementing pipe (2), and is characterized in that the supplementing pipe (2) is fixedly sleeved at the middle part of the upper side of the valve body (1), and a later installation joint (3) is fixedly arranged at the upper end of the supplementing pipe (2);

Two pistons (4) are slidably arranged in the valve body (1), a filling pipe (6) is rotatably sleeved between the two pistons (4), one end of the filling pipe (6) extends to the outside of the valve body (1), a discharging pipe (7) is arranged on the outer wall of one side of the filling pipe (6) and positioned between the two pistons (4) in a communicating manner, and one end of the discharging pipe (7) is fixedly connected with the filling pipe (6);

A cavity is formed in one side of the inner portion of the valve body (1), and a reset mechanism for driving the piston (4) to reset is arranged in the cavity.

2. The liquefied natural gas novel refrigerant supplementing valve according to claim 1, wherein the reset mechanism comprises a baffle plate (9) and springs (5), the baffle plate (9) is slidably arranged in the cavity, the rotary sleeve of the filling pipe (6) is arranged in the middle of the baffle plate (9), two springs (5) are fixedly arranged at two ends of one side, far away from the piston (4), of the baffle plate (9), and the other ends of the two springs (5) are fixedly connected with the inner wall of the cavity.

3. The liquefied natural gas novel refrigerant supplementing valve according to claim 2, wherein a U-shaped plate (10) is fixedly arranged at one end of the filling pipe (6) close to the baffle plate (9), and a limiting plate (11) is fixedly arranged at one side of the inside of the cavity.

4. The liquefied natural gas novel refrigerant supplementing valve according to claim 1, wherein an exhaust hole is formed in one side of the cavity away from the piston (4).

5. The liquefied natural gas novel refrigerant supplementing valve according to claim 2, wherein a connecting ring (8) is fixedly arranged at one end of the filling pipe (6) far away from the baffle plate (9).

6. The liquefied natural gas novel refrigerant supplementing valve according to claim 2, wherein sliding rods (12) are fixedly arranged on two sides of the inside of the cavity, and two ends of the baffle plate (9) are movably sleeved with the corresponding sliding rods (12) respectively.

7. The lng new refrigerant supplement valve according to claim 1, wherein the inside of the installation joint is provided with an electromagnetic valve, and the inside of the electromagnetic valve is electrically connected with a remote control module.