CN212643616U

CN212643616U - Top-mounted liquefied natural gas fixed ball valve

Info

Publication number: CN212643616U
Application number: CN202021118985.5U
Authority: CN
Inventors: 张力心; 王顺军
Original assignee: SUZHOU SIP STARD VALVE CO Ltd
Current assignee: SUZHOU SIP STARD VALVE CO Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-03-02
Anticipated expiration: 2030-06-17

Abstract

The utility model discloses a fixed ball valve of upper assembling type liquefied natural gas, which comprises a valve body, the top fixed mounting of valve body has extra long valve gap, be equipped with first sealing mechanism between valve body and the extra long valve gap, the top fixed mounting of extra long valve gap has the piece of turning round, the top fixed mounting of extra long valve gap has the closing plate, extra long valve gap internal rotation runs through and is equipped with low temperature extra long valve rod, the spheroid that is connected is rotated to the bottom fixed connection and the valve body bottom of low temperature extra long valve rod, all be provided with the valve seat subassembly between the both ends inner wall of spheroid and valve body. The utility model discloses a cooperation between extension valve gap, valve body, low temperature extension valve rod, spheroid, disk seat subassembly and the canceling release mechanical system is used, has realized the purpose of taking out extension valve gap from the valve body, further realizes being convenient for take out disk seat subassembly from the valve body inside to can carry out the change operation of disk seat subassembly and spheroid on the pipeline, improve its change efficiency.

Description

Top-mounted liquefied natural gas fixed ball valve

Technical Field

The utility model belongs to the technical field of the ball valve, especially, relate to a fixed ball valve of facial make-up formula liquefied natural gas.

Background

Natural gas is the best energy in the world at present, the ultralow temperature valve is widely used for production of liquefied gas, particularly liquefied natural gas, transportation to a storage device, and the safety performance of the valve becomes a pipe fitting for valve design.

When the valve seat assembly and the ball body inside the existing liquefied natural gas fixed ball valve are replaced, the whole ball valve needs to be detached from a conveying pipeline, and then replacement processing can be carried out, the replacement mode is low in efficiency, and therefore the upper-mounted liquefied natural gas fixed ball valve is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defect of low efficiency of the replacement mode existing in the prior art and providing a top-mounted liquefied natural gas fixed ball valve.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a fixed ball valve of upper assembling formula liquefied natural gas, includes the valve body, the top fixed mounting of valve body has extra long valve gap, be equipped with first sealing mechanism between valve body and the extra long valve gap, the top fixed mounting of extra long valve gap has the piece of turning round, the top fixed mounting of extra long valve gap has the closing plate, the extra long valve gap internal rotation runs through and is equipped with low temperature extra long valve rod, the spheroid that the bottom fixed connection and the valve body bottom rotation of low temperature extra long valve rod are connected, all be provided with the disk seat subassembly between the both ends inner wall of spheroid and valve body, fixed mounting has canceling release mechanical system on the lateral wall of disk seat subassembly, be equipped with second sealing mechanism between disk.

Preferably, first sealing mechanism is including setting up the first gasket between extension valve bonnet bottom and valve body inner wall, be equipped with on the inner wall of valve body and enclose with the first spring energy storage that first gasket contact set up.

Preferably, the reset mechanism includes fixed block of fixed mounting on the disk seat subassembly lateral wall, fixed mounting has the installation piece on the lateral wall of fixed block, the fixed slot has been seted up on the lateral wall of installation piece, the bottom fixed mounting of fixed slot has pressure spring, pressure spring's free end and the inner wall contact setting of valve body.

Preferably, the second sealing mechanism comprises a second gasket and a third gasket which are sleeved on the outer wall of the valve seat assembly in a sliding manner, a sliding sleeve is arranged between the second gasket and the third gasket and is provided with a second spring energy storage ring, and the second gasket, the third gasket and the second spring energy storage ring are all arranged in a manner of abutting against the inner wall of the valve body in a contact manner.

Preferably, the top of the valve body is fixedly provided with a first stud, the first stud penetrates through the bottom of the lengthened valve cover, the first stud is connected with a first nut in a threaded manner, and a first gasket which is sleeved on the first stud in a sliding manner is arranged between the first nut and the bottom of the lengthened valve cover.

Preferably, a second stud is fixedly mounted at the top of the lengthened valve cover, the second stud penetrates through the sealing plate, a second nut is in threaded connection with the second stud, and a second washer is arranged between the second nut and the top of the lengthened valve cover and sleeved on the second stud in a sliding manner.

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

1. the utility model discloses a cooperation between extension valve gap, valve body, low temperature extension valve rod, spheroid, disk seat subassembly and the canceling release mechanical system is used, has realized the purpose of taking out extension valve gap from the valve body, further realizes being convenient for take out disk seat subassembly from the valve body inside to can carry out the change operation of disk seat subassembly and spheroid on the pipeline, improve its change efficiency.

2. This practicality is used through the cooperation between first sealing mechanism and the second sealing mechanism, has realized strengthening the sealing performance between disk seat subassembly and the valve body, realizes the purpose of the sealing performance between extension valve gap and the valve body simultaneously, prevents the condition of leaking.

Drawings

Fig. 1 is a schematic front perspective structural view of a top-mounted liquefied natural gas fixed ball valve according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a partially enlarged view of C in fig. 1.

In the figure: the valve comprises a valve body 1, an extended valve cover 2, a twisting block 3, a sealing plate 4, a low-temperature extended valve rod 5, a ball 6, a valve seat assembly 7, a first gasket 8, a first spring energy storage ring 9, a fixing block 10, an installation block 11, a fixing groove 12, a compression spring 13, a second gasket 14, a third gasket 16, a second spring energy storage ring 16, a first stud 17, a first nut 18, a first washer 19, a second stud 20, a second nut 21 and a second washer 22.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a top-mounted liquefied natural gas fixed ball valve comprises a valve body 1, and a lengthened valve cover 2 is fixedly mounted at the top of the valve body 1.

The top of the valve body 1 is fixedly provided with a first stud 17, the first stud 17 penetrates through the bottom of the lengthened valve cover 2, the first stud 17 is connected with a first nut 18 through threads, and a first washer 19 which is slidably sleeved on the first stud 17 is arranged between the first nut 18 and the bottom of the lengthened valve cover 2.

It should be noted that the bottom of the lengthened valve cap 2 is provided with first mounting holes, when the lengthened valve cap 2 is mounted, the two first mounting holes and the two first studs 17 are inserted correspondingly, so that the lengthened valve cap 2 is disposed in contact with the top surface of the valve body 1, then the first washer 19 is sleeved on the first studs 17, and the first nut 18 is mounted on the first studs 17.

A first sealing mechanism is arranged between the valve body 1 and the lengthened valve cover 2.

Wherein, first sealing mechanism is including setting up the first gasket 8 between extension valve gap 2 bottom and the valve body 1 inner wall, is equipped with the first spring energy storage circle 9 that sets up with first gasket 8 contact on the inner wall of valve body 1.

It should be noted that the sealing purpose between the lengthened valve cover 2 and the valve body 1 is realized by arranging the first gasket 8 and the first spring energy storage ring 9.

The top of the lengthened valve cover 2 is fixedly provided with a twisting block 3, and the top of the lengthened valve cover 2 is fixedly provided with a sealing plate 4.

The top of the lengthened valve cap 2 is fixedly provided with a second stud 20, the second stud 20 penetrates through the sealing plate 4, a second nut 21 is connected to the second stud 20 in a threaded manner, and a second washer 22 which is slidably sleeved on the second stud 20 is arranged between the second nut 21 and the top of the lengthened valve cap 2.

It should be noted that a sealing strip is arranged between the low-temperature lengthened valve rod 5 and the lengthened valve cover 2, and the sealing performance is further enhanced by tightly abutting the sealing plate 4 against the top of the lengthened valve cover 2.

The internal rotation of extension valve gap 2 runs through and is equipped with low temperature extension valve rod 5, and wherein, low temperature extension valve rod 5 will be longer than general valve rod for avoid outside heat effect, the spheroid 6 of being connected is rotated with 1 bottom of valve body to the bottom fixed connection of low temperature extension valve rod 5, all is provided with valve seat assembly 7 between the both ends inner wall of spheroid 6 and valve body 1, and fixed mounting has canceling release mechanical system on valve seat assembly 7's the lateral wall, is equipped with second sealing mechanism between valve seat assembly 7 and the valve body 1.

Wherein, canceling release mechanical system includes fixed block 10 of fixed mounting on the valve holder subassembly 7 lateral wall, and fixed mounting has installation piece 11 on the lateral wall of fixed block 10, has seted up fixed slot 12 on the lateral wall of installation piece 11, and the bottom fixed mounting of fixed slot 12 has pressure spring 13, and pressure spring 13's free end sets up with the inner wall contact of valve body 1.

It should be noted that, firstly, two valve seat assemblies 7 are installed in the valve body 1, the two valve seat assemblies 7 are respectively inserted into the acting flow channel of the valve body 1, the compression spring 13 is arranged in contact with the inner wall of the valve body 1, then the ball body 6 is placed between the two valve seat assemblies 7, the openings of the two valve seat assemblies 7 are sleeved on the outer wall of the ball body 6, meanwhile, a sealing strip is also arranged on the contact surface between the valve seat assemblies 7 and the outer wall of the ball body 6, and at this time, the compression spring 13 is in a compression state.

The second sealing mechanism comprises a second gasket 14 and a third gasket 15 which are sleeved on the outer wall of the valve seat assembly 7 in a sliding mode, a sliding sleeve is arranged between the second gasket 14 and the third gasket 15, a second spring energy storage ring 16 is arranged between the second gasket 14 and the third gasket 15, and the second gasket 14, the third gasket 15 and the second spring energy storage ring 16 are all arranged in a propping and contacting mode with the inner wall of the valve body 1.

It should be noted that the second spring energy storage ring 16 is fixed by the second gasket 14 and the third gasket 15, and the second spring energy storage ring 16 is disposed in contact with the inner wall of the valve body 1 to ensure the sealing performance between the valve seat assembly 7 and the valve body 1.

The utility model discloses in, when needs are changed valve seat assembly 7 and spheroid 6 inside valve body 1, through rotating first nut 18 for first nut 18 takes off from first double-screw bolt 17, thereby can take out extension valve gap 2 from valve body 1, takes out the spheroid 6 of low temperature extension valve rod 5 bottom simultaneously.

At the in-process that spheroid 6 took out valve body 1, because valve seat assembly 7's opening is the cover on spheroid 6's outer wall to spheroid 6 can extrude valve seat assembly 7, makes the valve seat rent price 7 slide in valve body 1's runner, thereby takes out spheroid 6, takes out valve body 1 at spheroid 6 after, drives valve seat assembly 7 through pressure spring 13 and resets, later can follow valve body 1 inside with valve seat assembly 7 and take out, changes the processing.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fixed ball valve of upper assembling formula liquefied natural gas, includes the valve body, its characterized in that, the top fixed mounting of valve body has extra long valve gap, be equipped with first sealing mechanism between valve body and the extra long valve gap, the top fixed mounting of extra long valve gap has the piece of turning round, the top fixed mounting of extra long valve gap has the closing plate, it is equipped with low temperature extra long valve rod to run through with extra long valve gap internal rotation, the spheroid of being connected is rotated to the bottom fixed connection and the valve body bottom of low temperature extra long valve rod, all be provided with the disk seat subassembly between the both ends inner wall of spheroid and valve body, fixed mounting has canceling release mechanical system on the lateral wall of disk seat subassembly, be equipped with second.

2. The fixed ball valve of upper assembling type liquefied natural gas as claimed in claim 1, wherein the first sealing mechanism comprises a first gasket disposed between the bottom of the elongated valve cover and the inner wall of the valve body, and a first spring energy storage ring disposed in contact with the first gasket is disposed on the inner wall of the valve body.

3. The upper-mounted liquefied natural gas fixed ball valve as claimed in claim 1, wherein the resetting mechanism comprises a fixed block fixedly mounted on a side wall of the valve seat assembly, a mounting block is fixedly mounted on a side wall of the fixed block, a fixed groove is formed in a side wall of the mounting block, a compression spring is fixedly mounted at the bottom of the fixed groove, and a free end of the compression spring is in contact with an inner wall of the valve body.

4. The upper-mounted liquefied natural gas fixed ball valve according to claim 1, wherein the second sealing mechanism comprises a second gasket and a third gasket which are slidably sleeved on the outer wall of the valve seat assembly, a sliding sleeve is arranged between the second gasket and the third gasket and is provided with a second spring energy storage ring, and the second gasket, the third gasket and the second spring energy storage ring are arranged in a manner of abutting against the inner wall of the valve body.

5. The fixed ball valve of upper assembling type liquefied natural gas according to claim 1, wherein a first stud is fixedly installed at the top of the valve body, the first stud penetrates through the bottom of the lengthened valve cover, a first nut is connected to the first stud in a threaded manner, and a first washer slidably sleeved on the first stud is arranged between the first nut and the bottom of the lengthened valve cover.

6. The upper-mounted liquefied natural gas fixed ball valve according to claim 1, wherein a second stud is fixedly mounted at the top of the extended valve cover, the second stud penetrates through the sealing plate, a second nut is connected to the second stud in a threaded manner, and a second washer slidably sleeved on the second stud is arranged between the second nut and the top of the extended valve cover.