CN213980756U

CN213980756U - Shale gas well head is with anticorrosive gate valve

Info

Publication number: CN213980756U
Application number: CN202022717366.4U
Authority: CN
Inventors: 于冬; 袁梓健; 谭冬梅; 朱德生; 朱国亚
Original assignee: Jiangsu Shuanghui Machinery Manufacturing Co ltd
Current assignee: Jiangsu Shuanghui Machinery Manufacturing Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-08-17
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses a shale is anticorrosive gate valve for gas well head, including valve body and sealing connection mechanism, be provided with the valve gap on the up end of valve body, the upper end of valve gap is provided with the valve bonnet, inside one side sliding connection of valve bonnet has the cylinder head screw, all there is holding screw valve bonnet with the valve bonnet through seting up screw hole threaded connection on valve gap, the inside of valve bonnet is provided with the valve rod, one side of valve rod upper end sets up on the cylinder head screw, be provided with the bellows on the lower terminal surface of valve rod upper end, the lower extreme setting of bellows is on the up end of valve gap. The utility model discloses simple structure, reasonable in design, the gate valve is more convenient at the in-process erection joint in the use, has improved the security performance and the installation effectiveness of gate valve greatly, and the inside bellows that is provided with of valve body simultaneously, thereby bellows structural design can make the operator use the gate valve in-process position of conveniently observing the valve rod the safe state of gate valve more easily controlled.

Description

Shale gas well head is with anticorrosive gate valve

Technical Field

The utility model relates to a gate valve equipment technical field specifically is a shale gas well head is with anticorrosive gate valve.

Background

With the rapid development of industry and agriculture in China, the consumption of petroleum energy is more and more, and petroleum exploitation is usually carried out through shale gas wells, wherein a gate valve is one of the most important devices in the whole exploitation device.

The defects of the prior art are as follows:

1. the sealing performance of the traditional gate valve is easy to reduce in the use process of the traditional gate valve in the shale gas well and mine environment, the service life is short, the installation and connection are inconvenient, and the working efficiency is low;

2. in addition, the traditional gate valve is not provided with a corrugated pipe, the guidance quality is poor in the using process, the safety state of the valve rod is not convenient to observe in the using process, and the safety performance is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shale is anticorrosive gate valve for gas well head to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-corrosion gate valve for a shale gas wellhead comprises a valve body and a sealing connection mechanism, wherein a valve cover is arranged on the upper end face of the valve body, the upper end of the valve cover is provided with a valve cover, the valve cover and the valve cover are both connected with a set screw through a threaded hole, one side of the interior of the valve cover is connected with a cylindrical head screw in a sliding way, a valve rod is arranged in the valve cover, one side of the upper end of the valve rod is arranged on the cylindrical head screw, the lower end surface of the upper end of the valve rod is provided with a corrugated pipe, the lower end of the corrugated pipe is arranged on the upper end surface of the valve cover, the lower end in the valve cover is provided with a valve rod lifting rod, the upper end of the valve rod is connected with the lower end of a valve rod lifting rod, the upper end of the valve rod lifting rod is provided with a handle, the upper end of the valve rod lifting rod is connected with the handle through a round pin cone, and the sealing connection mechanisms are arranged on two sides of the lower end of the valve body.

The sealing connection mechanism is composed of end face flanges, outer hexagon screws, flange sealing rings, a nitrile rubber expansion ring, grooves, metal elastic pieces and clamping blocks, the end face flanges are arranged at the joints on the two sides of the lower end of the valve body, the valve body is connected with the end face flanges through the outer hexagon screws, the flange sealing rings are arranged between the valve body and the end face flanges, the nitrile rubber expansion ring is arranged at the lower end of the inner side wall of the end face flange, the grooves are formed in the upper end face of the end face flange, the metal elastic pieces are arranged at the bottoms of the grooves, and the clamping blocks are arranged at the other ends of the metal elastic pieces.

Preferably, a valve cover sealing ring is arranged between the valve body and the valve cover, and the valve cover sealing ring is made of fluororubber.

Preferably, the outer surfaces of the valve cover, the valve cover and the handle are all provided with antirust coatings.

Preferably, the number of the outer hexagon screws is at least six.

Preferably, the outer side surfaces of the nitrile rubber telescopic rings are all arranged to be planes, and the depth of the groove is higher than the height of the clamping block.

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

1. the utility model is provided with the sealing connection mechanism, the sealing connection mechanism is composed of the end face flange, the outer hexagon screw, the flange sealing ring, the nitrile rubber expansion ring, the groove, the metal elastic sheet and the clamping block, and the gate valve is more convenient to install and connect in the use process through the sealing structure of the end face flange, the flange sealing ring and the nitrile rubber expansion ring, thereby greatly improving the safety performance and the installation efficiency of the gate valve;

2. the utility model discloses a be provided with cap screw and bellows, through cap screw and bellows effect, thereby bellows structural design can make the operator use the gate valve in-process convenient observation valve rod's the position safe state of controlling the gate valve more easily.

Drawings

FIG. 1 is a partial cross-sectional view of an anti-corrosion gate valve for a shale gas well head according to the present invention;

FIG. 2 is an overall front view of the anti-corrosion gate valve for shale gas well head of the present invention;

FIG. 3 is a sectional view of an end face flange of an anti-corrosion gate valve for a shale gas well head according to the present invention;

fig. 4 is the utility model discloses a shale gas well head is with anticorrosive gate valve A department enlarged schematic in fig. 3.

In the figure: 1. a valve body; 2. a sealing connection mechanism; 21. an end face flange; 22. an outer hexagonal screw; 23. a flange seal ring; 24. a nitrile rubber expansion ring; 25. a groove; 26. a metal spring sheet; 27. a clamping block; 3. a valve cover; 4. a valve housing; 5. tightening the screw; 6. a cylindrical head screw; 7. a valve stem; 8. a bellows; 9. a valve stem lifting rod; 10. a handle; 11. a round pin cone; 12. valve bonnet sealing washer.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an anti-corrosion gate valve for a shale gas well mouth comprises a valve body 1 and a sealing connection mechanism 2, wherein a valve cover 3 is installed on the upper end face of the valve body 1, a valve cover 4 is installed at the upper end of the valve cover 3, the valve cover 3 and the valve cover 4 are both in threaded connection with a set screw 5 through being provided with a threaded hole, one side inside the valve cover 4 is in sliding connection with a cylindrical head screw 6 through being provided with a sliding groove, a valve rod 7 is installed inside the valve cover 4, one side at the upper end of the valve rod 7 is installed on the cylindrical head screw 6, a corrugated pipe 8 is installed on the lower end face at the upper end of the valve rod 7, the lower end of the corrugated pipe 8 is installed on the upper end face of the valve cover 3, a valve rod lifting rod 9 is installed at the lower end inside the valve cover 4, the upper end of the valve rod 7 is connected with the lower end of the valve rod lifting rod 9, a handle 10 is installed at the upper end of the valve rod lifting rod 9, and the handle 10 are connected through being installed with a round pin cone 11, the sealing connection mechanism 2 is arranged on two sides of the lower end of the valve body 1.

In this embodiment, preferably, the sealing connection mechanism 2 is composed of an end face flange 21, outer hexagon screws 22, a flange seal ring 23, a nitrile rubber expansion ring 24, a groove 25, a metal elastic sheet 26 and a fixture block 27, the end face flange 21 is installed at the interface at both sides of the lower end of the valve body 1, the valve body 1 is connected with the end face flange 21 through a plurality of outer hexagon screws 22 in a threaded connection manner, the flange seal ring 23 is installed between the valve body 1 and the end face flange 21, the nitrile rubber expansion ring 24 is connected to the lower end of the inner side wall of the end face flange 21 in a hot-melting manner, the groove 25 is formed in the upper end face of the end face flange 21, the metal elastic sheet 26 is installed at the bottom of the groove 25, and the fixture block 27 is installed at the other end of the metal elastic sheet 26.

In order to increase the sealing effect between the valve body 1 and the bonnet 3 and to increase the service life of the bonnet sealing ring 12, in the present embodiment, preferably, the bonnet sealing ring 12 is installed between the valve body 1 and the bonnet 3, and the bonnet sealing ring 12 is made of fluororubber.

In order to prevent the surfaces of the valve cover 3, the valve cover 4 and the handle 10 from being corroded, in the embodiment, the outer surfaces of the valve cover 3, the valve cover 4 and the handle 10 are preferably sprayed with antirust coatings.

In order to increase the stability of the mounting of the end flange 21, in the present embodiment, it is preferable that the number of the outer hexagonal screws 22 is at least six.

In order to increase the sealing effect of the butadiene rubber elastic ring 24 and completely retract the fixture block 27 into the groove 25, in the embodiment, preferably, the outer side surfaces of the butadiene rubber elastic ring 24 are both formed into a plane, and the depth of the groove 25 is higher than the height of the fixture block 27.

The working principle is as follows: in this device, be provided with sealing connection mechanism 2, sealing connection mechanism 2 comprises end flange 21, outer hexagon screw 22, flange seal ring 23, butadiene acrylonitrile rubber expansion ring 24, recess 25, metal shrapnel 26 and fixture block 27, extrude fixture block 27 through the external connection flange in the process of installation, can make metal shrapnel 26 shrink, butadiene acrylonitrile rubber expansion ring 24 outwards extends, butadiene acrylonitrile rubber expansion ring 24 stretches into the inside of outside pipeline, and through the seal structure of end flange 21 and flange seal ring 23, the gate valve is the erection joint more convenient in the use, the security performance and the installation effectiveness of gate valve have been improved greatly, thereby can make the operator conveniently observe the position of valve rod 7 in the use gate valve through cylinder head screw 6 and the 8 structural design of bellows, thereby the safe state of gate valve is more easily controlled.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shale gas well head is with anticorrosive gate valve, includes valve body (1) and sealing connection mechanism (2), its characterized in that: the valve cover (3) is arranged on the upper end face of the valve body (1), the upper end of the valve cover (3) is provided with a valve cover (4), the valve cover (3) and the valve cover (4) are both connected with a set screw (5) through a threaded hole, one side inside the valve cover (4) is connected with a cylindrical head screw (6) in a sliding manner, a valve rod (7) is arranged inside the valve cover (4), one side of the upper end of the valve rod (7) is arranged on the cylindrical head screw (6), a corrugated pipe (8) is arranged on the lower end face of the upper end of the valve rod (7), the lower end of the corrugated pipe (8) is arranged on the upper end face of the valve cover (3), a valve rod lifting rod (9) is arranged at the lower end inside the valve cover (4), the upper end of the valve rod (7) is connected with the lower end of the valve rod lifting rod (9), a handle (10) is arranged at the upper end of the valve rod lifting rod (9), the upper end of the valve rod lifting rod (9) is connected with the handle (10) through a round pin cone (11), and the sealing connection mechanism (2) is arranged on two sides of the lower end of the valve body (1).

2. The shale gas wellhead anticorrosion gate valve as claimed in claim 1, wherein: the sealing connection mechanism (2) consists of an end face flange (21), an outer hexagon screw (22), a flange sealing ring (23), a butadiene acrylonitrile rubber expansion ring (24), a groove (25), a metal elastic sheet (26) and a clamping block (27), end face flanges (21) are arranged at the joints at the two sides of the lower end of the valve body (1), the valve body (1) is connected with the end face flange (21) through arranging a plurality of outer hexagon screws (22), a flange sealing ring (23) is arranged between the valve body (1) and the end face flange (21), the lower end of the inner side wall of the end face flange (21) is provided with a butadiene-acrylonitrile rubber expansion ring (24), a groove (25) is formed in the upper end face of the end face flange (21), a metal elastic sheet (26) is arranged at the bottom of the groove (25), and a clamping block (27) is arranged at the other end of the metal elastic sheet (26).

3. The shale gas wellhead anticorrosion gate valve as claimed in claim 1, wherein: a valve cover sealing ring (12) is arranged between the valve body (1) and the valve cover (3), and the valve cover sealing ring (12) is made of fluororubber.

4. The shale gas wellhead anticorrosion gate valve as claimed in claim 1, wherein: and antirust coatings are arranged on the outer surfaces of the valve cover (3), the valve cover (4) and the handle (10).

5. The shale gas wellhead anticorrosion gate valve as claimed in claim 2, wherein: the number of the outer hexagon screws (22) is at least six.

6. The shale gas wellhead anticorrosion gate valve as claimed in claim 2, wherein: the outer side surfaces of the nitrile rubber telescopic rings (24) are all arranged to be planes, and the depth of the grooves (25) is higher than the height of the clamping blocks (27).