CN218408653U

CN218408653U - Seal structure of LNG high pressure axial-flow type check valve

Info

Publication number: CN218408653U
Application number: CN202221331767.9U
Authority: CN
Inventors: 周忠明
Original assignee: Jiaxing Yiguan Electromechanical Co ltd
Current assignee: Zhejiang Tongfu New Materials Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-01-31
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a seal structure of LNG high pressure axial-flow check valve, which comprises a valve body, the bolt is passed through at the top of valve body and the valve body controller is installed, the both sides of valve body inner chamber all are provided with sealing mechanism, the feed liquor pipeline is installed through the bolt in the left side of valve body. The utility model discloses a feed liquor pipeline, spacing frame, the installation cover, the hydraulic stem, the connecting rod, the seal cover, sealed frame, the sealing plug, the closing plate, communicating pipe, the installing frame, the installation piece, the filter, the mounting groove, movable frame, a spring, the cooperation of stopper and arm-tie is used, the in-process of current check valve in the use has been solved, structure sealed to the water liquid is comparatively single usually, make when water pressure is too big, lead to sealed department to take place to leak easily, and do not have usually and carry out filterable function with the impurity in the transport water liquid, make in long-time work, lead to having a large amount of impurity to remain in the pipeline easily, make the pipeline take place the problem of jam easily.

Description

Seal structure of LNG high pressure axial-flow type check valve

Technical Field

The utility model relates to a check valve technical field specifically is a seal structure of LNG high pressure axial-flow type check valve.

Background

The check valve is a valve whose opening and closing part is a circular valve clack and acts by self weight and medium pressure to block medium backflow, belonging to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve, the valve clack movement mode is divided into lifting type and swing type, the lifting type check valve is similar to the structure of the stop valve, only the valve rod driving the valve clack is lacked, the medium flows in from the inlet end and flows out from the outlet end, when the inlet pressure is greater than the sum of the weight of the valve clack and flow resistance thereof, the valve is opened, otherwise, the valve is closed when the medium flows backwards, the swing type check valve has a valve clack which is obliquely arranged and can rotate around a shaft, the working principle is similar to that of the lifting type check valve, the check valve is commonly used as a bottom valve of a water pumping device, the backflow of water can be blocked, and the check valve is combined with the stop valve to play a role of safety isolation.

At the in-process to water liquid transport, generally can use the check valve to carry out the separation to water liquid takes place to prevent that water liquid has the phenomenon of backward flow to take place after carrying, and current check valve is at the in-process of using, and is comparatively single to the sealed structure of water liquid usually, makes when water pressure is too big, leads to sealed department to take place to leak easily, and does not have usually to carry the impurity in the water liquid to carry and carry out filterable function, makes in long-time work, leads to easily that there is a large amount of impurity to remain in the pipeline, makes the pipeline take place to block up easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure of LNG high pressure axial-flow type check valve, possess sealed effectual and can carry out filterable advantage to the impurity in carrying water liquid, the in-process of having solved current check valve in using, it is comparatively single to the sealed structure of water liquid usually, make when water pressure is too big, lead to sealed department to take place to leak easily, and do not have usually and carry out filterable function with the impurity in carrying water liquid, make in long-time work, lead to easily having a large amount of impurity to remain in the pipeline, make the pipeline take place the problem of jam easily.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a seal structure of LNG high pressure axial-flow type check valve, includes the valve body, the bolt is passed through at the top of valve body and the valve body controller is installed, the both sides of valve body inner chamber all are provided with sealing mechanism, the feed liquor pipeline is installed through the bolt in the left side of valve body, the vertical fixedly connected with spacing frame of inner chamber of feed liquor pipeline, the top of feed liquor pipeline is provided with filtering mechanism.

Preferably, sealing mechanism includes the installation cover, the top and the valve body fixed connection of installation cover, the bottom of installation cover is run through and is provided with the hydraulic stem, the output fixedly connected with connecting rod of hydraulic stem, the surperficial movable sleeve of connecting rod is equipped with the seal cover, the closing plate has all been welded to the both sides of valve body inner chamber, the top of closing plate is run through and is provided with communicating pipe, the top of connecting rod is run through to the sealed frame of inner chamber and fixedly connected with of valve body, the inner chamber fixedly connected with sealing plug of sealed frame, the junction of the surface of seal cover and valve body inner wall is fixed connection.

Preferably, filtering mechanism includes the installing frame, the bottom and the feed liquor pipeline welding of installing frame, the inner chamber activity of installing frame is provided with the installation piece, the bottom welding of installation piece has the filter, the inner chamber that feed liquor pipeline and the spacing frame of extending to are run through to the bottom of filter, the mounting groove has all been seted up to the both sides of installation piece, movable frame has all been welded to the both sides of installing frame, movable frame's inner chamber welding has the spring, and the stopper has all been welded to one side that two springs are relative, the top welding of stopper has the arm-tie, the outside to movable frame is run through to the top of arm-tie.

Preferably, the bottom fixedly connected with guide block of stopper, the spout has been seted up to the bottom of activity frame inner chamber.

Preferably, guide rods are welded on two sides of the bottom of the inner cavity of the mounting frame, and guide grooves are formed in two sides of the bottom of the mounting block.

Preferably, the top of the movable frame is provided with a long hole, and the two sides of the mounting frame are provided with through holes.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a feed liquor pipeline, spacing frame, the installation cover, the hydraulic stem, the connecting rod, the seal cover, sealed frame, the sealing plug, the closing plate, communicating pipe, the installing frame, the installation piece, the filter, the mounting groove, movable frame, a spring, the cooperation of stopper and arm-tie is used, the in-process of current check valve in the use has been solved, structure sealed to the water liquid is comparatively single usually, make when water pressure is too big, lead to sealed department to take place to leak easily, and do not have usually and carry out filterable function with the impurity in the transport water liquid, make in long-time work, lead to having a large amount of impurity to remain in the pipeline easily, make the pipeline take place the problem of jam easily.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is an exploded cross-sectional view of the sealing mechanism of the present invention;

FIG. 3 is an exploded cross-sectional view of the filter mechanism of the present invention;

fig. 4 is a schematic sectional view of the local filtering mechanism of the present invention.

In the figure: 1 valve body, 2 valve body controllers, 3 sealing mechanism, 4 inlet conduit, 5 spacing frames, 6 filtering mechanism, 7 mounting sleeves, 8 hydraulic stem, 9 connecting rod, 10 sealing sleeve, 11 sealing frame, 12 sealing plug, 13 sealing plate, 14 communicating pipe, 15 mounting frame, 16 mounting block, 17 filter, 18 mounting groove, 19 movable frame, 20 spring, 21 spacing block, 22 arm-tie.

Detailed Description

Referring to fig. 1-4, a sealing structure of an LNG high-pressure axial-flow check valve comprises a valve body 1, a valve controller 2 is mounted at the top of the valve body 1 through bolts, sealing mechanisms 3 are arranged on both sides of an inner cavity of the valve body 1, a liquid inlet pipeline 4 is mounted on the left side of the valve body 1 through bolts, a limiting frame 5 is fixedly connected to the inner cavity of the liquid inlet pipeline 4 in the longitudinal direction, and a filtering mechanism 6 is arranged at the top of the liquid inlet pipeline 4.

Sealing mechanism 3 includes installation cover 7, the top and the 1 fixed connection of valve body of installation cover 7, the bottom of installation cover 7 is run through and is provided with hydraulic stem 8, hydraulic stem 8's output fixedly connected with connecting rod 9, the movable cover in surface of connecting rod 9 is equipped with seal cover 10, closing plate 13 has all been welded to the both sides of 1 inner chamber of valve body, the top of closing plate 13 is run through and is provided with communicating pipe 14, the top of connecting rod 9 is run through to the inner chamber and the fixedly connected with seal frame 11 of valve body 1, the inner chamber fixedly connected with sealing plug 12 of seal frame 11, the surface of seal cover 10 is fixed connection with the junction of 1 inner wall of valve body.

Filtering mechanism 6 includes installing frame 15, the bottom and the welding of feed liquor pipeline 4 of installing frame 15, the inner chamber activity of installing frame 15 is provided with installation piece 16, the bottom welding of installation piece 16 has filter 17, feed liquor pipeline 4 is run through and the inner chamber that extends to spacing frame 5 in the bottom of filter 17, mounting groove 18 has all been seted up to the both sides of installation piece 16, movable frame 19 has all been welded to the both sides of installing frame 15, the inner chamber welding of movable frame 19 has spring 20, stopper 21 has all been welded to one side that two springs 20 are relative, stopper 21's top welding has arm-tie 22, arm-tie 22's top is run through to the outside of movable frame 19.

The bottom fixedly connected with guide block of stopper 21, the spout has been seted up to the bottom of 19 inner chambers of movable frame.

Guide rods are welded on two sides of the bottom of the inner cavity of the mounting frame 15, and guide grooves are formed in two sides of the bottom of the mounting block 16.

The slot hole has been seted up at the top of movable frame 19, and the through-hole has all been seted up to the both sides of installing frame 15, and the input of valve body controller 2 and hydraulic stem 8 all is connected with external controller electricity.

Through setting up the slot hole, be convenient for arm-tie 22 carries out round trip movement, pull out stopper 21 from mounting groove 18 in through setting up arm-tie 22, through setting up the through-hole, be convenient for stopper 21 carries out round trip movement, cooperation through guide bar and guide way, can lead spacingly to installation piece 16, in order to prevent that installation piece 16 from taking place to rock in installing frame 15, through guide block and spout, can carry out spacing direction to stopper 21, prevent that stopper 21 from taking place to rotate when removing.

When the water-saving type water-saving valve is used, a user firstly inserts the filter plate 17 into the valve body 1 through the mounting block 16 until the mounting block 16 completely enters the mounting frame 15, after the mounting block 16 enters the mounting frame 15, the limiting block 21 is inserted into the mounting groove 18 through the resilience force of the spring 20, so that the mounting block 16 is limited, so that the filter plate 17 is prevented from falling off due to overlarge water pressure, after the filter plate 17 is mounted, the user controls the valve body controller 2 to convey water through an external controller, the filter plate 17 filters impurities in the water conveying process, so that the pipeline is prevented from being blocked, when the water conveying is stopped, the user firstly closes the valve body controller 2 through the external controller and then starts the hydraulic rod 8, the output end of the hydraulic rod 8 drives the connecting rod 9 to move, the connecting rod 9 drives the sealing frame 11 to upwards move until the communication pipe 14 completely enters the sealing frame 11, so that the communication pipe 14 is sealed, when the sealing frame 11 seals the communication pipe 14, the frame 11 pushes the communication pipe 12 into the communication pipe 14, so that a water outlet of the communication pipe 14 is blocked, so that the water is prevented from leaking due to overlarge water pressure.

In summary, the following steps: this seal structure of LNG high pressure axial-flow type check valve, through inlet channel 4, limit frame 5, installation cover 7, hydraulic stem 8, connecting rod 9, seal cover 10, seal frame 11, sealing plug 12, closing plate 13, communicating pipe 14, installation frame 15, installation piece 16, filter 17, mounting groove 18, movable frame 19, spring 20, stopper 21 and arm-tie 22's cooperation is used, the in-process of having solved current check valve in using, it is comparatively single to the sealed structure of water liquid usually, make when water pressure is too big, lead to easily sealed department to take place to leak, and do not have usually and carry out filterable function with the impurity in the water liquid transport, make in long-time work, lead to easily in having a large amount of impurity to remain in the pipeline, make the pipeline take place the problem of jam easily.

Claims

1. The utility model provides a seal structure of LNG high pressure axial-flow type check valve, includes valve body (1), its characterized in that: the top of valve body (1) is passed through the bolt and is installed valve body controller (2), the both sides of valve body (1) inner chamber all are provided with sealing mechanism (3), inlet liquid pipeline (4) are installed through the bolt in the left side of valve body (1), the vertical fixedly connected with in inner chamber of inlet liquid pipeline (4) is spacing frame (5), the top of inlet liquid pipeline (4) is provided with filtering mechanism (6).

2. The sealing structure of an LNG high-pressure axial flow check valve according to claim 1, wherein: sealing mechanism (3) are including installation cover (7), the top and valve body (1) fixed connection of installation cover (7), the bottom of installation cover (7) is run through and is provided with hydraulic stem (8), output fixedly connected with connecting rod (9) of hydraulic stem (8), the surperficial movable sleeve of connecting rod (9) is equipped with seal cover (10), closing plate (13) have all been welded to the both sides of valve body (1) inner chamber, the top of closing plate (13) is run through and is provided with communicating pipe (14), the top of connecting rod (9) is run through to the inner chamber and the fixedly connected with seal frame (11) of valve body (1), the inner chamber fixedly connected with sealing plug (12) of seal frame (11), the junction of the surface of seal cover (10) and valve body (1) inner wall is fixed connection.

3. The sealing structure of an LNG high-pressure axial flow check valve according to claim 1, wherein: filtering mechanism (6) are including installing frame (15), the bottom and the feed liquor pipeline (4) welding of installing frame (15), the inner chamber activity of installing frame (15) is provided with installation piece (16), the bottom welding of installation piece (16) has filter (17), the inner chamber that feed liquor pipeline (4) and extend to spacing frame (5) is run through to the bottom of filter (17), mounting groove (18) have all been seted up to the both sides of installation piece (16), movable frame (19) have all been welded to the both sides of installing frame (15), the inner chamber welding of movable frame (19) has spring (20), and stopper (21) have all been welded to one side that two springs (20) are relative, the top welding of stopper (21) has arm-tie (22), the outside to movable frame (19) is run through at the top of arm-tie (22).

4. A sealing structure of an LNG high-pressure axial flow check valve according to claim 3, wherein: the bottom fixedly connected with guide block of stopper (21), the spout has been seted up to the bottom of activity frame (19) inner chamber.

5. The sealing structure of an LNG high-pressure axial flow check valve according to claim 3, wherein: guide rods are welded on two sides of the bottom of the inner cavity of the mounting frame (15), and guide grooves are formed in two sides of the bottom of the mounting block (16).

6. The sealing structure of an LNG high-pressure axial flow check valve according to claim 3, wherein: the top of the movable frame (19) is provided with a long hole, and the two sides of the mounting frame (15) are provided with through holes.