CN213898922U

CN213898922U - Casing head assembly

Info

Publication number: CN213898922U
Application number: CN202023116210.7U
Authority: CN
Inventors: 邱晨; 顾正淼; 赵会明; 张霞; 李利成; 茆永成; 徐成华
Original assignee: Jiangsu Xiongyue Petroleum Mechanical Equipment Manufacturing Co ltd
Current assignee: Jiangsu Xiongyue Petroleum Mechanical Equipment Manufacturing Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-08-06
Anticipated expiration: 2030-12-22

Abstract

The utility model discloses a casing head subassembly, including the casing head, the both sides intercommunication of casing head has the connecting pipe, one side that the casing head was kept away from to the connecting pipe is provided with the plate valve, one side that the connecting pipe is close to the plate valve is fixed with first flange, wherein, the end fixing that the plate valve is close to first flange has the second flange, the seal groove has been seted up to one side that the second flange is close to first flange. The utility model discloses a first sealing washer and second sealing washer that set up, when first flange carries out fixed connection with the second flange, make first flange drive the inside that the sealed tube got into the seal groove, make the sealed tube carry out sealing connection through first sealing washer and seal groove, centre gripping second sealing washer between first flange and the second flange simultaneously, carry out double sealing through first sealing washer and second sealing washer to being connected of first flange and second flange, can effectually avoid first flange and the second flange to be connected and take place the oil impregnate phenomenon.

Description

Casing head assembly

Technical Field

The utility model relates to a production tree technical field specifically is a casing head subassembly.

Background

The Christmas tree is a wellhead device for exploiting petroleum, such as a self-blowing well, a mechanical oil production well and the like, is main equipment for controlling and adjusting oil and gas production at the uppermost part of an oil and gas well, and mainly comprises a casing head, a tubing head and a Christmas tree body.

Although the types and the number of the existing casing heads are very large, the existing casing heads still have certain problems, and certain inconvenience is brought to the use of the casing heads.

When the existing casing head is used, the flange and the flat valve are required to be fixedly connected, but the connection sealing performance of the flange is poor, and after the casing head is used for a long time, the oil leakage phenomenon can occur between the flanges, so that the casing head is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a casing head subassembly has solved current casing head and when using, needs carry out fixed connection through flange and wafer valve, and nevertheless the connection leakproofness of flange is relatively poor, uses the back for a long time, can take place the oil impregnate phenomenon between the flange, the problem of inconvenient use.

In order to achieve the above object, the utility model provides a following technical scheme: a casing head component comprises a casing head, wherein two sides of the casing head are communicated with connecting pipes, one side of each connecting pipe, which is far away from the casing head, is provided with a flat valve, one side of each connecting pipe, which is close to the flat valve, is fixedly provided with a first flange, wherein,

a second flange is fixed at the end part of the flat valve close to the first flange, a sealing groove is formed in one side of the second flange close to the first flange, a sealing pipe is fixed at one side of the first flange corresponding to the sealing groove, a first sealing ring is sleeved on the outer side of the sealing pipe in the sealing groove, and a second sealing ring is arranged between the first flange and the second flange;

screw has been seted up with the ring side equidistance of second flange to first flange, the inside of screw runs through there is T shape screw rod, the tip threaded connection of T shape screw rod has the nut, the oiling mouth has been seted up to the tip of T shape screw rod, the intercommunicating pore has been seted up to the inboard that T shape screw rod is close to the nut, the oiling mouth is close to opening side inside and is fixed with the check valve.

Preferably, the sealing tube is communicated with the connecting tube.

Preferably, the first sealing ring is made of rubber materials, and the outer diameter of the first sealing ring is equal to the inner diameter of the sealing groove.

Preferably, the inner diameter of the second sealing ring is larger than the outer diameter of the sealing pipe, and the outer diameter of the second sealing ring is smaller than the outer diameters of the first flange and the second flange.

Preferably, the oil filling opening is communicated with the inner side of the screw cap through a communication hole.

Preferably, the check valve is communicated in one direction from the oil filler opening side to the inner side.

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

1. the utility model discloses a first sealing washer and second sealing washer that set up, when first flange carries out fixed connection with the second flange, make first flange drive the inside that the sealed tube got into the seal groove, make the sealed tube carry out sealing connection through first sealing washer and seal groove, centre gripping second sealing washer between first flange and the second flange simultaneously, carry out double sealing through first sealing washer and second sealing washer to being connected of first flange and second flange, can effectually avoid first flange and the second flange to be connected and take place the oil impregnate phenomenon.

2. The utility model discloses an oiling mouth and intercommunicating pore that set up need when dismantling T shape screw rod and nut, pour into lubricating oil through the oiling mouth opening into, when oiling mouth opening part oil pressure was too big, make the check valve open, make lubricating oil pass through the inboard that the intercommunicating pore got into the nut, be convenient for to rust cleaning lubrication between nut and the T shape screw rod.

Drawings

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

FIG. 2 is a schematic view of a partial enlarged structure at A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of a part of the enlarged structure at B in fig. 1 according to the present invention.

In the figure: 1. a casing head; 2. a connecting pipe; 3. a flat valve; 4. a first flange; 5. a second flange; 6. a sealing groove; 7. a sealing tube; 8. a first seal ring; 9. a second seal ring; 10. a screw hole; 11. a T-shaped screw; 12. a nut; 13. an oil filling port; 14. a communicating hole; 15. a one-way valve.

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 to 3, the present invention provides a technical solution: a casing head component comprises a casing head 1, a connecting pipe 2, a flat valve 3, a first flange 4, a second flange 5, a sealing groove 6, a sealing pipe 7, a first sealing ring 8, a second sealing ring 9, a screw hole 10, a T-shaped screw rod 11, a screw cap 12, an oil injection port 13, a communication hole 14 and a one-way valve 15, wherein the connecting pipe 2 is communicated with two sides of the casing head 1, the flat valve 3 is arranged on one side of the connecting pipe 2 far away from the casing head 1, the first flange 4 is fixed on one side of the connecting pipe 2 close to the flat valve 3, wherein,

a second flange 5 is fixed at the end part of the flat valve 3 close to the first flange 4, a sealing groove 6 is arranged at one side of the second flange 5 close to the first flange 4, a sealing pipe 7 is fixed at one side of the first flange 4 corresponding to the sealing groove 6, the sealing pipe 7 is communicated with the connecting pipe 2, a first sealing ring 8 is sleeved at the outer side of the sealing pipe 7 in the sealing groove 6, the first sealing ring 8 is made of rubber material, the outer diameter of the first sealing ring 8 is equal to the inner diameter of the sealing groove 6, when the first flange 4 is fixedly connected with the second flange 5, the first flange 4 drives the sealing pipe 7 to enter the sealing groove 6, the sealing pipe 7 is hermetically connected with the sealing groove 6 through the first sealing ring 8, meanwhile, a second sealing ring 9 is clamped between the first flange 4 and the second flange 5, and the connection of the first flange 4 and the second flange 5 is doubly sealed through the first sealing ring 8 and the second sealing ring 9, the oil leakage phenomenon of the connection of the first flange 4 and the second flange 5 can be effectively avoided, a second sealing ring 9 is arranged between the first flange 4 and the second flange 5, the inner diameter of the second sealing ring 9 is larger than the outer diameter of the sealing pipe 7, and the outer diameter of the second sealing ring 9 is smaller than the outer diameters of the first flange 4 and the second flange 5;

screw 10 has been seted up to the ring side equidistance of first flange 4 and second flange 5, the inside of screw 10 runs through there is T shape screw rod 11, the tip threaded connection of T shape screw rod 11 has nut 12, oiling mouth 13 has been seted up to the tip of T shape screw rod 11, oiling mouth 13 is linked together through intercommunicating pore 14 and nut 12 inboard, intercommunicating pore 14 has been seted up to the inboard that T shape screw rod 11 is close to nut 12, oiling mouth 13 is close to opening side inside and is fixed with check valve 15, check valve 15 is opened to inboard direction one-way circulation by oiling mouth 13 opening side, when needing to dismantle T shape screw rod 11 and nut 12, injects lubricating oil through oiling mouth 13 opening, and when oiling mouth 13 opening part oil pressure was too big, make check valve 15 open, makes lubricating oil pass through intercommunicating pore 14 entering nut 12's inboard, is convenient for carry out the rust cleaning lubrication between nut 12 and T shape screw rod 11, when the oil filler 13 is not needed, the opening of the oil filler 13 can be sealed by the check valve 15, and foreign matters are prevented from entering the inside of the oil filler 13.

The working principle is as follows: when the casing head assembly is used, firstly, when the casing head 1 is connected with the flat valve 3, the first flange 4 drives the sealing pipe 7 to enter the inside of the sealing groove 6, the sealing pipe 7 is in sealing connection with the sealing groove 6 through the first sealing ring 8, meanwhile, the second sealing ring 9 is clamped between the first flange 4 and the second flange 5, the connection between the first flange 4 and the second flange 5 is sealed doubly through the first sealing ring 8 and the second sealing ring 9, the oil leakage phenomenon caused by the connection between the first flange 4 and the second flange 5 can be effectively avoided, the first flange 4 and the second flange 5 are fixedly connected through the T-shaped screw rod 11 and the screw cap 12, when the T-shaped screw rod 11 and the screw cap 12 are required to be disassembled, lubricating oil is injected through the opening of the oil injection port 13, when the oil pressure at the opening of the oil injection port 13 is overlarge, the one-way valve 15 is opened, so that the lubricating oil enters the inner side of the screw cap 12 through the communication hole 14, the rust removal lubrication between the screw cap 12 and the T-shaped screw rod 11 is convenient, and when the oil filling port 13 is not needed, the opening of the oil filling port 13 can be sealed through the one-way valve 15, so that foreign matters are prevented from entering the inside of the oil filling port 13.

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. A casing head assembly comprising a casing head (1), characterized in that: two sides of the casing head (1) are communicated with connecting pipes (2), one side of each connecting pipe (2) far away from the casing head (1) is provided with a flat valve (3), one side of each connecting pipe (2) close to the corresponding flat valve (3) is fixedly provided with a first flange (4), wherein,

a second flange (5) is fixed at the end part of the flat valve (3) close to the first flange (4), a sealing groove (6) is formed in one side of the second flange (5) close to the first flange (4), a sealing pipe (7) is fixed on one side of the first flange (4) corresponding to the sealing groove (6), a first sealing ring (8) is sleeved on the outer side of the sealing pipe (7) located in the sealing groove (6), and a second sealing ring (9) is arranged between the first flange (4) and the second flange (5);

screw (10) have been seted up to the ring side equidistance of first flange (4) and second flange (5), the inside of screw (10) is run through T shape screw rod (11), the tip threaded connection of T shape screw rod (11) has nut (12), oiling mouth (13) have been seted up to the tip of T shape screw rod (11), intercommunicating pore (14) have been seted up to the inboard that T shape screw rod (11) are close to nut (12), oiling mouth (13) are close to opening side inside and are fixed with check valve (15).

2. The casing head assembly of claim 1, wherein: the sealing pipe (7) is communicated with the connecting pipe (2).

3. The casing head assembly of claim 1, wherein: the first sealing ring (8) is made of rubber materials, and the outer diameter of the first sealing ring (8) is equal to the inner diameter of the sealing groove (6).

4. The casing head assembly of claim 1, wherein: the inner diameter of the second sealing ring (9) is larger than the outer diameter of the sealing pipe (7), and the outer diameter of the second sealing ring (9) is smaller than the outer diameters of the first flange (4) and the second flange (5).

5. The casing head assembly of claim 1, wherein: the oil filling opening (13) is communicated with the inner side of the screw cap (12) through a communication hole (14).

6. The casing head assembly of claim 1, wherein: the one-way valve (15) is communicated in a one-way mode from the opening side of the oil filling opening (13) to the inner side direction.