CN216520107U

CN216520107U - Precooling device of ultra-large low-temperature liquefied natural gas storage tank

Info

Publication number: CN216520107U
Application number: CN202122230129.XU
Authority: CN
Inventors: 潘新发
Original assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Current assignee: Cangzhou China Railway Equipment Manufacturing Materials Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-05-13
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a precooling device of an ultra-large low-temperature liquefied natural gas storage tank, which relates to the field of precooling devices and comprises the following components: a horizontal tank body; the three-way pipe is arranged at the top end of the horizontal tank body; the pipeline is connected to two ends of the three-way pipe; and the connecting mechanism is arranged between the three-way pipe and the pipeline and is used for quickly connecting and dismantling the three-way pipe and the pipeline. According to the utility model, by arranging the connecting mechanism, when the pipeline is connected, the pipeline is inserted into the inner wall of the connecting seat until the pipeline is contacted with the limiting block, the fixed block is displaced into the fixed groove under the elastic force of the fixed spring so as to fix the pipeline, when the pipeline is dismantled, the rotating ring is rotated to drive the gear to rotate, the gear rotates to drive the fixed screw rod to rotate, the fixed screw rod rotates to drive the fixed block to be displaced, and the fixed block position is moved out of the fixed groove, so that the pipeline is not fixed, and the pipeline and the three-way pipe are conveniently and rapidly connected and dismantled.

Description

Precooling device of ultra-large low-temperature liquefied natural gas storage tank

Technical Field

The utility model relates to the field of precooling devices, in particular to a precooling device for an ultra-large low-temperature liquefied natural gas storage tank.

Background

The main component of liquefied natural gas is methane, which is known as the cleanest fossil energy on the earth, and the liquefied natural gas is colorless, tasteless, nontoxic and noncorrosive, the volume of the liquefied natural gas is about 1/625 of the volume of the same amount of gaseous natural gas, the mass of the liquefied natural gas is only about 45% of the water with the same volume, the natural gas produced in a gas field is purified firstly in the manufacturing process, the liquefied natural gas is transported by a liquefied natural gas ship after being liquefied at a series of ultralow temperatures, the liquefied natural gas has very little pollution to air after being combusted, and the heat emitted is large, so the liquefied natural gas is an advanced energy source, when the liquefied natural gas is precooled, the spraying device has a complex structure, occupies a large tank space, is only suitable for a vertical tank body, is not suitable for a horizontal tank body, and the spraying uniformity is still not ideal.

According to the Chinese patent No. CN211146075U, a precooling device for an ultra-large low-temperature liquefied natural gas storage tank is provided, which comprises a movable disc arranged in an inner cavity of a horizontal tank body, wherein a nut sleeve and three optical sliding sleeves are embedded and fixed in a disc body of the movable disc, a transmission lead screw is screwed in the nut sleeve, one end of the transmission lead screw penetrates out of the horizontal tank body and is fixedly connected with an output shaft of a servo motor through a coupler, a smooth guide rod is slidably connected in the optical sliding sleeves, and two ends of the smooth guide rod are respectively fixed with inner walls of end plates at two sides of the horizontal tank body; the movable disc is internally provided with an arc channel, the periphery of the movable disc is uniformly provided with a plurality of spray heads, the inner ends of the spray heads are communicated with the arc channel, one end of the arc channel is closed, and the other end of the arc channel is connected with a three-way pipe through a hose. When the horizontal tank is precooled, the second branch pipe is utilized to fill nitrogen, so that the original gas in the horizontal tank is discharged; and the second branch pipe is used for filling liquefied natural gas, so that the operation is convenient, and the method is suitable for uniformly precooling the horizontal tank body.

Above-mentioned patent can ensure the homogeneity that sprays in the use, and the axial compressive capacity of jar body is followed to the multiplicable horizontal jar of body both sides end plate of smooth guide bar, but the three-way pipe when being connected with the pipeline, the operation is comparatively complicated, needs to have the structure to carry out quick connection and demolish three-way pipe and pipeline.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problem that a structure is needed to quickly connect and detach the three-way pipe and the pipeline, the precooling device for the ultra-large low-temperature liquefied natural gas storage tank is provided.

In order to achieve the purpose, the utility model provides the following technical scheme: a precooling device for an ultra-large cryogenic liquefied natural gas storage tank comprises:

a horizontal tank body;

the three-way pipe is arranged at the top end of the horizontal tank body;

the pipeline is connected to two ends of the three-way pipe;

the connecting mechanism is arranged between the three-way pipe and the pipeline and is used for quickly connecting and dismantling the three-way pipe and the pipeline;

and the sealing mechanism is arranged on the inner wall of the three-way pipe and is used for sealing the connection between the three-way pipe and the pipeline.

As a still further scheme of the utility model: the connecting mechanism comprises a connecting seat, fixing grooves and fixing blocks, the connecting seat is fixedly connected to two ends of the three-way pipe, the fixing grooves are formed in the outer wall of the pipeline, the fixing blocks are connected to the inner wall of the connecting seat in a sliding mode, one side, located on the outer wall of the three-way pipe, of the connecting seat is rotatably connected with a rotating ring, a fixing spring is connected between the fixing blocks and the connecting seat, the inner wall of each fixing block is connected with a fixing lead screw, and one end of each fixing lead screw is connected with a gear.

As a still further scheme of the utility model: the sealing mechanism comprises a sealing air bag and a limiting block, the sealing air bag is arranged on the inner wall of the connecting seat and one side of the fixing block, the limiting block is fixedly connected to the inner wall of the three-way pipe, one end of the limiting block is connected with a sliding block in a sliding mode, and the other end of the sliding block is connected with a connecting air bag.

As a still further scheme of the utility model: the inner wall of connecting seat and the outer wall of pipeline are laminated mutually, the inner wall of fixed slot and the outer wall of fixed block are laminated mutually, the one end of fixed block is the inclined plane.

As a still further scheme of the utility model: the inner wall of fixed block is provided with the internal thread, the external screw thread of stationary screw is laminated with the internal thread of fixed block mutually.

As a still further scheme of the utility model: one end of the rotating ring is in contact with the gear, a tooth groove is formed in the contact position of the rotating ring and the gear, and the gear teeth of the gear are meshed with the tooth groove of the rotating ring.

As a still further scheme of the utility model: the inner wall of stopper is provided with the activity groove, the inner wall in activity groove is laminated with the outer wall of slider mutually, be connected with the connecting pipe between connecting gasbag and the air-tight seal.

Compared with the prior art, the utility model has the beneficial effects that:

1. by arranging the connecting mechanism, when the pipeline is connected, the pipeline is inserted into the inner wall of the connecting seat until the pipeline is contacted with the limiting block, the fixed block moves into the fixed groove under the elastic action of the fixed spring, so that the pipeline is fixed, when the pipeline is dismantled, the rotating ring is rotated, the rotating ring rotates to drive the gear to rotate, the gear rotates to drive the fixed screw rod to rotate, the fixed screw rod rotates to drive the fixed block to move, the fixed block position moves out of the fixed groove, so that the pipeline is not fixed, and the pipeline and the three-way pipe are conveniently and quickly connected and dismantled;

2. through setting up sealing mechanism, at the in-process that pipeline and stopper contacted, the pipeline drives the slider with the slider contact and carries out the displacement, and the slider displacement extrudees connecting the gasbag, and the air in the connecting gasbag passes through the connecting pipe and gets into in the sealed gasbag, and the sealed gasbag extrudees the pipeline, is convenient for improve the leakproofness of three-way pipe and pipe connection.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the installation of the conduit of the present invention;

fig. 3 is a schematic view of the installation of the sealing mechanism of the present invention.

In the figure: 1. a horizontal tank body; 2. a three-way pipe; 3. a pipeline; 4. a connecting mechanism; 401. a connecting seat; 402. a fixing groove; 403. a fixed block; 404. a rotating ring; 405. fixing the spring; 406. fixing the screw rod; 407. a gear; 5. a sealing mechanism; 501. sealing the air bag; 502. a limiting block; 503. a slider; 504. connecting the air bag; 505. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

Referring to fig. 1 to 3, in an embodiment of the present invention, a pre-cooling device for an ultra-large cryogenic liquefied natural gas storage tank includes:

a horizontal tank body 1;

the three-way pipe 2 is arranged at the top end of the horizontal tank body 1;

the pipeline 3 is connected to two ends of the three-way pipe 2;

the connecting mechanism 4 is arranged between the three-way pipe 2 and the pipeline 3 and is used for quickly connecting and dismantling the three-way pipe 2 and the pipeline 3;

and the sealing mechanism 5 is arranged on the inner wall of the three-way pipe 2 and is used for sealing the connection between the three-way pipe 2 and the pipeline 3.

Please refer to fig. 1-3, the connection mechanism 4 includes a connection seat 401, a fixing groove 402 and a fixing block 403, the connection seat 401 is fixedly connected to two ends of the three-way pipe 2, the fixing groove 402 is disposed on an outer wall of the pipe 3, the fixing block 403 is slidably connected to an inner wall of the connection seat 401, a rotating ring 404 is rotatably connected to one side of the outer wall of the three-way pipe 2, a fixing spring 405 is connected between the fixing block 403 and the connection seat 401, the inner wall of the fixing block 403 is connected to a fixing screw 406, and one end of the fixing screw 406 is connected to a gear 407, so as to quickly connect and disconnect the three-way pipe 2 and the pipe 3.

Please refer to fig. 3, the sealing mechanism 5 includes a sealing air bag 501 and a limiting block 502, the sealing air bag 501 is disposed on the inner wall of the connecting seat 401 and one side of the fixing block 403, the limiting block 502 is fixedly connected to the inner wall of the three-way pipe 2, one end of the limiting block 502 is slidably connected to a sliding block 503, and the other end of the sliding block 503 is connected to a connecting air bag 504 to seal the connection between the three-way pipe 2 and the pipeline 3.

Referring to fig. 1-3, the inner wall of the connecting seat 401 is attached to the outer wall of the pipe 3 to facilitate the sliding of the pipe 3 on the inner wall of the connecting seat 401, the inner wall of the fixing groove 402 is attached to the outer wall of the fixing block 403 to facilitate the sliding of the fixing block 403 into the fixing groove 402, and one end of the fixing block 403 is an inclined surface to facilitate the displacement of the fixing block 403 under stress.

Please refer to fig. 1-3, the inner wall of the fixing block 403 is provided with an internal thread, and the external thread of the fixing screw 406 is attached to the internal thread of the fixing block 403, so that the fixing screw 406 rotates to drive the fixing block 403 to displace.

Referring to fig. 1-3, one end of the rotating ring 404 is in contact with the gear 407, a tooth slot is disposed at a contact position of the rotating ring 404 and the gear 407, and teeth of the gear 407 are engaged with the tooth slot of the rotating ring 404, so that the rotating ring 404 rotates to drive the gear 407 to rotate.

Please refer to fig. 3, the inner wall of the stopper 502 is provided with a movable groove, the inner wall of the movable groove is attached to the outer wall of the sliding block 503, a connecting pipe 505 is connected between the connecting airbag 504 and the sealed airbag 501, so that the sliding block 503 can move to extrude the connecting airbag 504, and the air in the connecting airbag 504 enters the sealed airbag 501 through the connecting pipe 505.

The working principle of the utility model is as follows: firstly, when the pipeline 3 is connected, the pipeline 3 is inserted into the inner wall of the connecting seat 401 until the pipeline 3 contacts with the limit block 502, the fixing block 403 is displaced into the fixing groove 402 by the elastic force of the fixing spring 405, thereby fixing the pipeline 3, when the pipeline 3 is removed, the rotating ring 404 is rotated to drive the gear 407 to rotate, the gear 407 is rotated to drive the fixing screw 406 to rotate, the fixing screw 406 is rotated to drive the fixing block 403 to displace, the fixing block 403 is displaced out of the fixing groove 402, thereby eliminating the fixing of the pipeline 3, and facilitating the quick connection and removal of the pipeline 3 and the three-way pipe 2, when the pipeline 3 contacts with the limit block 502, the pipeline 3 contacts with the sliding block 503 to drive the sliding block 503 to displace, the sliding block 503 displaces to extrude the connecting air bag 504, and the air in the connecting air bag 504 enters the sealing air bag 501 through the connecting pipe 505, the sealing air bag 501 extrudes the pipeline 3, so that the connection tightness of the three-way pipe 2 and the pipeline 3 is improved conveniently.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the utility model concepts of the present invention in the scope of the present invention.

Claims

1. A precooling device for an ultra-large cryogenic liquefied natural gas storage tank is characterized by comprising:

a horizontal tank body (1);

the three-way pipe (2) is arranged at the top end of the horizontal tank body (1);

the pipeline (3) is connected to two ends of the three-way pipe (2);

the connecting mechanism (4) is arranged between the three-way pipe (2) and the pipeline (3) and is used for quickly connecting and dismantling the three-way pipe (2) and the pipeline (3);

and the sealing mechanism (5) is arranged on the inner wall of the three-way pipe (2) and is used for sealing the connection between the three-way pipe (2) and the pipeline (3).

2. The precooling apparatus for the ultra-large cryogenic liquefied natural gas storage tank according to claim 1, wherein the connecting mechanism (4) includes a connecting seat (401), a fixing groove (402) and a fixing block (403), the connecting seat (401) is fixedly connected to two ends of the three-way pipe (2), the fixing groove (402) is arranged on the outer wall of the pipeline (3), the fixing block (403) is slidably connected to the inner wall of the connecting seat (401), a rotating ring (404) is rotatably connected to one side of the outer wall of the three-way pipe (2) located at the connecting seat (401), a fixing spring (405) is connected between the fixing block (403) and the connecting seat (401), a fixing screw rod (406) is connected to the inner wall of the fixing block (403), and a gear (407) is connected to one end of the fixing screw rod (406).

3. The precooling apparatus for the ultra-large cryogenic liquefied natural gas storage tank according to claim 2, wherein the sealing mechanism (5) comprises a sealing air bag (501) and a limiting block (502), the sealing air bag (501) is disposed on the inner wall of the connecting seat (401) and one side of the fixing block (403), the limiting block (502) is fixedly connected to the inner wall of the three-way pipe (2), one end of the limiting block (502) is slidably connected with a sliding block (503), and the other end of the sliding block (503) is connected with a connecting air bag (504).

4. The pre-cooling device for the ultra-large cryogenic liquefied natural gas storage tank according to claim 2, wherein an inner wall of the connecting seat (401) is attached to an outer wall of the pipeline (3), an inner wall of the fixing groove (402) is attached to an outer wall of the fixing block (403), and one end of the fixing block (403) is an inclined surface.

5. The precooling apparatus for the ultra-large cryogenic liquefied natural gas storage tank according to claim 2, wherein an inner wall of the fixing block (403) is provided with an inner thread, and an outer thread of the fixing screw rod (406) is attached to the inner thread of the fixing block (403).

6. The pre-cooling device for the ultra-large cryogenic liquefied natural gas storage tank according to claim 2, wherein one end of the rotating ring (404) is in contact with a gear (407), a tooth slot is formed at a contact position of the rotating ring (404) and the gear (407), and gear teeth of the gear (407) are meshed with the tooth slot of the rotating ring (404).

7. The precooling apparatus for an ultra-large cryogenic liquefied natural gas storage tank as claimed in claim 3, wherein a movable groove is provided on an inner wall of the stopper (502), the inner wall of the movable groove is attached to an outer wall of the slider (503), and a connecting pipe (505) is connected between the connecting airbag (504) and the sealing airbag (501).