CN202900142U - Self-sealing casing head - Google Patents
Self-sealing casing head Download PDFInfo
- Publication number
- CN202900142U CN202900142U CN 201220429514 CN201220429514U CN202900142U CN 202900142 U CN202900142 U CN 202900142U CN 201220429514 CN201220429514 CN 201220429514 CN 201220429514 U CN201220429514 U CN 201220429514U CN 202900142 U CN202900142 U CN 202900142U
- Authority
- CN
- China
- Prior art keywords
- casing head
- head body
- self
- seal groove
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Earth Drilling (AREA)
Abstract
The utility model discloses a self-sealing casing head which comprises a casing head body (6), wherein a flange (1) is connected with the upper portion of the casing head body (6), an outlet (2) is arranged on the side wall of the casing head body (6), and connecting threads (4) are arranged on the lower portion of the casing head body (6). The self-sealing casing head is characterized in that an inverted triangle seal groove (3) is formed on the inner wall of the casing head body (6), and is formed above the connecting threads (4), and an O-shaped ring (5) is installed in the inverted triangle seal groove (3). The self-sealing casing head can be automatically sealed in the process of operation, the connecting threads are not enabled to bear pressure, service life and working pressure of products are improved, and operation cost is reduced.
Description
Technical field
The utility model relates to casing head, is specifically related to a kind of casing head that carries hermetically-sealed construction.
Background technology
Casing head is one of indispensable wellhead equipment in the drilling process, the casing head of hickey wherein, when casing threads connects, or in the course of the work, Chang Yin is threaded, can only adopt the lower pressure operation, for improving operating pressure, have to increase miscellaneous equipment, thereby increase the workload of operation installation personnel, prolong the activity duration, increase operating cost.
Summary of the invention
The purpose of this utility model is: a kind of automatic-sealed casing head is provided, and the del seal groove cooperates the "O"-ring sealing, so that threaded portion does not bear pressure, thus the protection screw thread.
The technical solution that the utility model adopts is: this casing head comprises the casing head body, the top adpting flange of casing head body, leave mouth on the sidewall of casing head body, connecting thread is established in the below of casing head body, it is characterized in that: the inwall of casing head body is positioned at the top of connecting thread and establishes the del seal groove, and "O"-ring is installed in the del seal groove.
The utlity model has following advantage: 1. simple in structure, easy to process, cost of production is low; 2. in sleeve pipe connected, the "O"-ring extrusion formed sealing automatically, does not produce extra cost; 3. hermetically-sealed construction is in screw thread the place ahead, and after the formation sealing, the protection screw thread does not bear pressure, improves the application life of screw thread, reduces operating cost, so that product can bear more high workload pressure; 4. this triangle seal groove is del, and is outer little interior large, can better protect "O"-ring, increases sealing area.
Description of drawings
Fig. 1 is the utility model CASINGHEAD STRUCTURE figure.
Fig. 2 is the del seal groove schematic diagram of Fig. 1.
Among the figure: 1 flange, 2 outlets, 3 del seal grooves, 4 connecting threads, 5 "O"-rings, 6 casing head bodies.
The specific embodiment
Shown in Fig. 1-2, this casing head comprises casing head body 6, the top adpting flange 1 of casing head body 6, leave mouth 2 on the sidewall of casing head body 6, connecting thread 4 is established in the below of casing head body 6, it is characterized in that: the inwall of casing head body 6 is positioned at the top of connecting thread 4 and establishes del seal groove 3, del seal groove 3 interior installation "O"-rings 5.
Claims (1)
1. automatic-sealed casing head, this casing head comprises casing head body (6), the top adpting flange (1) of casing head body (6), leave mouthful (2) on the sidewall of casing head body (6), connecting thread (4) is established in the below of casing head body (6), it is characterized in that: the inwall of casing head body (6) is positioned at the top of connecting thread (4) and establishes del seal groove (3), and "O"-ring (5) is installed in the del seal groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429514 CN202900142U (en) | 2012-08-28 | 2012-08-28 | Self-sealing casing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220429514 CN202900142U (en) | 2012-08-28 | 2012-08-28 | Self-sealing casing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202900142U true CN202900142U (en) | 2013-04-24 |
Family
ID=48120825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220429514 Expired - Fee Related CN202900142U (en) | 2012-08-28 | 2012-08-28 | Self-sealing casing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900142U (en) |
-
2012
- 2012-08-28 CN CN 201220429514 patent/CN202900142U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20170828 |