CN216279463U

CN216279463U - 175MPa ultrahigh pressure fracturing flat gate valve

Info

Publication number: CN216279463U
Application number: CN202122285899.4U
Authority: CN
Inventors: 陈长林; 姜晓飞
Original assignee: Jianhu County Hongda Valve & Pipe Fitting Co ltd
Current assignee: Jianhu County Hongda Valve & Pipe Fitting Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-04-12
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses a 175MPa ultrahigh pressure fracturing flat gate valve, which belongs to the technical field of gas production wellhead equipment and comprises a valve body and a valve rod, wherein a valve seat is arranged in the valve body, an upper valve cover and a lower valve cover are respectively arranged at the upper end and the lower end of the valve body, a lead screw is arranged at the top end of the valve rod, a valve plate is sleeved on the outer side close to the bottom end of the valve rod, the valve plate is arranged in the valve seat and can move up and down along a T-shaped groove in the valve seat, a lead screw nut is sleeved on the outer side of the lead screw, a hand wheel rod and an output shaft are respectively arranged at the upper end and the lower end of the lead screw nut, a hand wheel is arranged at the top end of the hand wheel rod, the top of the lead screw can move along the hand wheel rod, and the output shaft is connected with the top of the upper valve cover through a valve frame. The 175MPa ultrahigh-pressure fracturing flat gate valve has 175MPa ultrahigh-pressure resistance and can be stably used for a long time under the fracturing working conditions of ultrahigh pressure, multiple stages, high sand content and acid content.

Description

175MPa ultrahigh pressure fracturing flat gate valve

Technical Field

The utility model belongs to the technical field of gas production wellhead equipment, and particularly relates to a 175MPa ultrahigh-pressure fracturing flat gate valve.

Background

At present, shale gas drilling and fracturing is widely applied at home and abroad and is known as an effective production increasing measure. The shale gas drilling and production well in China breaks through 7000 m deeply, the number of fracturing sections of a single well exceeds 40 sections, and the requirement on construction pressure in the fracturing construction process is higher and higher. Aiming at the exploitation of shale gas in ultra-deep wells, the pressure required by fracturing construction is 120-130 MPa, and the peak value of the pressure can break through 138MPa under partial working conditions. The pressure grade of the conventional fracturing flat gate valve is selected according to the standard requirements of GB/T22543 wellhead device and Christmas tree of petroleum and natural gas industry drilling and production equipment and API Spec 6A wellhead device and Christmas tree equipment specification, and the maximum design pressure of the fracturing flat gate valve in the standard specification is 138 MPa. The fracturing flat gate valve with the working pressure of 138MPa designed according to the standard cannot be stably used for a long time under the working condition of shale gas fracturing of the ultra-deep well, the sealing failure of the fracturing flat gate valve is easily caused under the fracturing working conditions of ultrahigh pressure, multiple stages, high sand content and acid content, and well control risks are easily caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a 175MPa ultrahigh pressure fracturing flat gate valve, which has 175MPa ultrahigh pressure resistance and can be stably used for a long time under the fracturing working conditions of ultrahigh pressure, multiple stages, high sand content and acid content.

In order to achieve the purpose, the utility model is realized by the following technical scheme: the utility model provides a 175MPa superhigh pressure fracturing plate valve, includes valve body and valve rod, be equipped with the disk seat in the valve body, both ends are equipped with valve gap and lower valve gap respectively about the valve body, the valve rod top is equipped with the lead screw, is close to bottom outside cover and is equipped with the valve plate, the valve plate is located in the disk seat and can be followed the T type groove in the disk seat and reciprocate, lead screw outside cover is equipped with screw-nut, both ends are equipped with hand wheel pole and output shaft respectively about the screw-nut, hand wheel pole top is equipped with the hand wheel, the lead screw top can be followed the hand wheel pole and removed, the output shaft passes through the valve frame and links to each other with last valve gap top. The valve body is designed according to the rated pressure of 175MPa, so that the valve body can be stably used for a long time under the 138MPa fracturing working condition.

Further, a bearing is arranged at the joint of the output shaft and the valve frame.

Further, a down-falling rod is arranged at the bottom of the valve rod and is arranged in the lower valve cover.

Furthermore, a lower packing and a lower packing gland are arranged at the joint of the lower down rod and the lower valve cover.

Furthermore, an upper packing and an upper packing gland are arranged at the joint of the upper valve cover and the top of the valve rod.

Furthermore, a grease injection valve is arranged in the upper valve cover.

Further, a pressure testing valve is arranged in the lower valve cover.

Furthermore, the joints of the valve body and the upper valve cover and the lower valve cover are provided with O-shaped rings.

Furthermore, the connecting parts of the upper valve cover and the lower valve cover with the valve rod are respectively arranged in chamfer grooves, and the connecting parts of the valve rod with the inner cavities of the upper valve cover and the lower valve cover are respectively provided with chamfers opposite to the chamfer grooves. The chamfer and chamfer groove further enhance the sealing.

Has the advantages that: compared with the prior art, the utility model has the following advantages: according to the 175MPa ultrahigh-pressure fracturing flat gate valve provided by the utility model, parts of the 175MPa ultrahigh-pressure fracturing flat gate valve are designed by adopting 175MPa rated pressure, can be stably used for a long time under 138MPa pressure, and can be suitable for fracturing working conditions with multiple stages, high sand content and acid content; the sealing performance between each part of inner chamber is good, can prevent effectively that the inner chamber from blockking up and influencing the gate valve leakproofness.

Drawings

FIG. 1 is a structural diagram of a 175MPa ultrahigh-pressure fracturing flat gate valve according to the utility model;

fig. 2 is a partial enlarged view of a structure a in fig. 1.

In the figure: 1 valve body, 11 valve seats, 12 upper valve covers, 121 grease injection valves, 13 lower valve covers, 131 pressure test valves, 14 chamfer grooves, 15-O rings, 2 valve rods, 21 valve plates, 22 lower reversing rods, 23 lead screws, 231 lead screw nuts, 24 hand wheel rods, 241 hand wheels, 25 output shafts, 251 bearings, 26 chamfers, 3 valve frames, 4 upper packing, 41 upper packing glands, 5 lower packing and 51 lower packing glands.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; 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 by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The utility model is further illustrated with reference to the following figures and specific examples.

Example 1

As shown in fig. 1, a 175MPa superhigh pressure fracturing plate valve, including valve body 1 and valve rod 2, be equipped with disk seat 11 in the valve body 1, both ends are equipped with upper valve cover 12 and lower valve cover 13 respectively about the valve body 1, 2 tops of valve rod are equipped with lead screw 23, and it is equipped with valve plate 21 to be close to the bottom outside cover, valve plate 21 locates in the disk seat 11 and can follow the T type groove in the disk seat 11 and reciprocate, the cover of lead screw 23 outside is equipped with screw-nut 231, both ends are equipped with hand wheel pole 24 and output shaft 25 respectively about screw-nut 231, hand wheel pole 24 top is equipped with hand wheel 241, the hand wheel pole 24 removes can be followed at the lead screw 23 top, output shaft 25 links to each other through valve frame 3 and upper valve cover 12 top.

Example 2

As shown in fig. 1, a 175MPa ultrahigh pressure fracturing plate gate valve comprises a valve body 1 and a valve rod 2, wherein a valve seat 11 is arranged in the valve body 1, an upper valve cover 12 and a lower valve cover 13 are respectively arranged at the upper end and the lower end of the valve body 1, a grease injection valve 121 is arranged in the upper valve cover 12, a pressure testing valve 131 is arranged in the lower valve cover 13, O-rings 15 are respectively arranged at the connecting positions of the valve body 1 and the upper valve cover 12 and the lower valve cover 13, a lead screw 23 is arranged at the top end of the valve rod 2, a valve plate 21 is sleeved at the position close to the outer side of the bottom end and can move up and down along a T-shaped groove in the valve seat 11, a lead screw nut 231 is sleeved at the outer side of the lead screw 23, a hand wheel rod 24 and an output shaft 25 are respectively arranged at the upper end and the lower end of the lead screw nut 231, a hand wheel 241 is arranged at the top end of the hand wheel rod 24, the top of the lead screw 23 can move in the hand wheel rod 24, the output shaft 25 is connected with the top of the upper valve cover 12 through a valve frame 3, a bearing 251 is arranged at the joint of the output shaft 25 and the valve frame 3.

The bottom of the valve rod 2 is provided with a down-pouring rod 22, the down-pouring rod 22 is arranged in the lower valve cover 13, a lower packing 5 and a lower packing gland 51 are arranged at the joint of the down-pouring rod 22 and the lower valve cover 13, and an upper packing 4 and an upper packing gland 41 are arranged at the joint of the upper valve cover 12 and the top of the valve rod 2.

In addition, as shown in fig. 2, the joints of the upper bonnet 12 and the lower bonnet 13 with the valve rod 2 are respectively arranged on the chamfer groove 14, and the joints of the valve rod 2 with the inner cavities of the upper bonnet 12 and the lower bonnet 13 are respectively provided with a chamfer 26 opposite to the position of the chamfer groove 14.

When the 175MPa ultrahigh pressure fracturing flat gate valve works, firstly, two ends of a valve body 1 are communicated with pipelines, then a hand wheel 241 is rotated to drive a screw rod 23 to move upwards along the inner side of a hand wheel rod 24 in a rotating mode, and further drive a valve rod 2 and a valve plate 21 to move upwards to a position where an upper end chamfer 26 of the valve rod 2 is in contact with a chamfer groove 14 of an upper valve cover 13, at the moment, the valve plate 21 is not located in the middle of a T-shaped groove of a valve seat 11, an inner cavity of the valve body 1 is in a conduction state, the hand wheel 241 is rotated reversely, the valve rod 2 and the valve plate 21 can move downwards, and the conduction flow size or the conduction of the interior of the valve body 1 can be adjusted.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a 175MPa superhigh pressure fracturing plate valve which characterized in that: including valve body (1) and valve rod (2), be equipped with disk seat (11) in valve body (1), both ends are equipped with valve gap (12) and lower valve gap (13) respectively about valve body (1), valve rod (2) top is equipped with lead screw (23), is equipped with valve plate (21) near the bottom outside cover, valve plate (21) are located in disk seat (11) and can follow the T type groove in disk seat (11) and reciprocate, lead screw (23) outside cover is equipped with screw-nut (231), both ends are equipped with hand wheel pole (24) and output shaft (25) respectively about screw-nut (231), hand wheel pole (24) top is equipped with hand wheel (241), move in hand wheel pole (24) can be followed at lead screw (23) top, output shaft (25) link to each other with upper valve gap (12) top through valve frame (3).

2. The 175MPa ultrahigh pressure fracturing plate gate valve of claim 1, wherein: and a bearing (251) is arranged at the joint of the output shaft (25) and the valve frame (3).

3. The 175MPa ultrahigh pressure fracturing plate gate valve of claim 1, wherein: the bottom of the valve rod (2) is provided with a down-falling rod (22), and the down-falling rod (22) is arranged in the lower valve cover (13).

4. The 175MPa ultra high pressure fracturing plate gate valve of claim 3, wherein: the joint of the lower reversing rod (22) and the lower valve cover (13) is provided with a lower packing (5) and a lower packing gland (51).

5. The 175MPa ultra high pressure fracturing plate gate valve of claim 3, wherein: an upper packing (4) and an upper packing gland (41) are arranged at the joint of the upper valve cover (12) and the top of the valve rod (2).

6. The 175MPa ultrahigh pressure fracturing plate gate valve of claim 1, wherein: a grease injection valve (121) is arranged in the upper valve cover (12).

7. The 175MPa ultrahigh pressure fracturing plate gate valve of claim 1, wherein: and a pressure testing valve (131) is arranged in the lower valve cover (13).

8. The 175MPa ultrahigh pressure fracturing plate gate valve of claim 1, wherein: and O-shaped rings (15) are arranged at the joints of the valve body (1) and the upper valve cover (12) and the lower valve cover (13).

9. The 175MPa ultra high pressure frac plate gate valve of any one of claims 1-8, wherein: the upper valve cover (12) and the lower valve cover (13) are connected with the valve rod (2) and are respectively arranged on the chamfer groove (14), and the valve rod (2) is connected with the inner cavities of the upper valve cover (12) and the lower valve cover (13) and is respectively provided with a chamfer (26) opposite to the chamfer groove (14).