CN201875312U - Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring - Google Patents

Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring Download PDF

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Publication number
CN201875312U
CN201875312U CN 201020658249 CN201020658249U CN201875312U CN 201875312 U CN201875312 U CN 201875312U CN 201020658249 CN201020658249 CN 201020658249 CN 201020658249 U CN201020658249 U CN 201020658249U CN 201875312 U CN201875312 U CN 201875312U
Authority
CN
China
Prior art keywords
joint
branch pipe
threaded joint
pipe screw
lap welding
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 - Lifetime
Application number
CN 201020658249
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Chinese (zh)
Inventor
刘江
栾海峰
王冲
闫波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
703th Research Institute of CSIC
Original Assignee
703th Research Institute of CSIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 703th Research Institute of CSIC filed Critical 703th Research Institute of CSIC
Priority to CN 201020658249 priority Critical patent/CN201875312U/en
Application granted granted Critical
Publication of CN201875312U publication Critical patent/CN201875312U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a lap welding branch pipe threaded joint sealed by an O-shaped rubber sealing ring, and relates to the lap welding branch pipe threaded joint which solves the problems that toxic gas can be released when the lap welding branch pipe threaded joint is sealed by an asbestos rubber sheet, and the sealing effect is influenced due to complex machining, high cost, insufficient plastic deformation or deflection when the lap welding branch pipe threaded joint is sealed by a copper washer. The lap welding branch pipe threaded joint also comprises sealing rings which are O-shaped rubber sealing rings; annular grooves are machined on adjacent end faces of a branch pipe threaded joint and a lap welding flat shoulder joint along a circumferential direction; and the O-shaped rubber sealing rings are arranged in the annular grooves. The lap welding branch pipe threaded joint is applied to all industrial fields requiring pipelines for fluid transmission, such as fields of ships, foods, industrial automation and the like.

Description

Adopt the joint welding of O shape rubber seal sealing to prop up pipe screw joint
Technical field
The utility model relates to a kind of joint welding and props up pipe screw joint.
Background technique
Adopt the joint welding of seal ring sealing to prop up pipe screw joint and be mainly used in being connected between pipeline and the arm.At present, when the joint welding of CB56 standard is propped up pipe screw joint and is connected with flat shoulder grafting head, generally adopt asbestos packing sheet or copper washer to seal.Asbestos packing sheet can discharge toxic gas, is not suitable for using at this confined space of boats and ships, and use progressively has been under an embargo; The copper washer processed complex, the cost height, and in the pipeline construction process, need apply bigger external force and make copper washer generation plastic deformation, thereby reach the effect of sealing, when the workmen exerts oneself when too small or inhomogeneous, can cause the insufficient of seal washer plastic deformation or take place crookedly, leakage phenomenon often takes place; When the workmen overexerts, can make the damage of branch pipe connection helical thread portion.
The model utility content
The purpose of this utility model provides a kind of joint welding of the O of employing shape rubber seal sealing and props up pipe screw joint, propping up pipe screw joint with the solution joint welding adopts the asbestos packing sheet sealing can discharge toxic gas and the sealing of employing copper washer, processed complex, cost height, plastic deformation is insufficient or it is crooked to take place, thereby influences the problem of sealing effect.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: the joint welding of employing O shape rubber seal of the present utility model sealing is propped up pipe screw joint and is comprised the flat shoulder grafting head of joint welding, pipe screw joint and cap nut, and the flat shoulder grafting head of described joint welding is fixed together by cap nut with a pipe screw joint; Described joint welding is propped up pipe screw joint and is also comprised seal ring, and described seal ring is an O shape rubber seal, and the adjacent face upper edge of a pipe screw joint and the flat shoulder grafting head of joint welding circumferentially is processed with annular groove, and O shape rubber seal is housed in the annular groove.
The utlity model has following beneficial effect: pipe screw joint is propped up in joint welding of the present utility model can exchange (pipe screw joint is propped up in joint welding) fully with the CB56 standard, this joint welding is propped up pipe screw joint and is utilized O shape rubber seal to realize the tip side face seal, the following pressure rating working medium of 16MPa had good sealing effect, simultaneously, because the required external force of O shape rubber seal generation resiliently deformable is less, can effectively avoid owing to overexert to screwing in the damage of joint screw thread part; The conduit design consideration GB GB/T3452.1-2005 " hydropneumatic with O shape rubber seal dimension series and tolerance " of the annular groove of O shape rubber seal and GB/T3452.3-2005 " hydropneumatic with the O shape rubber seal groove dimensions " standard of laying is carried out, and selects the O shape rubber seal that meets NBS for use.The utility model is applicable to that pressure is lower than being connected of main equipment and pipeline in the Oil, Water, Gas system of 16MPa, more than 1.6 times of pipe screw joint sealing load grade are propped up in the joint welding that is the CB56 standard, and can exchange fully with it, utilize the standard O shape rubber seal of GB defined to replace traditional asbestos packing sheet or copper washer, reduced engineering cost; By the choose reasonable to manufactured materials, joint welding is propped up pipe screw joint and can be widely used in boats and ships, food, industrial automation etc. all need carry out the industrial field of fluid transmission by pipeline.
Description of drawings
Fig. 1 is a plan view of the present utility model, and Fig. 2 is the main sectional view of a pipe screw joint, and Fig. 3 is the A-A sectional view of Fig. 2, and Fig. 4 is the I portion enlarged view of Fig. 2.
Embodiment
Embodiment one: in conjunction with Fig. 1~Fig. 4 explanation, the joint welding of the employing O shape rubber seal sealing of present embodiment is propped up pipe screw joint and is comprised the flat shoulder grafting head 1 of joint welding, pipe screw joint 2 and cap nut 3, and the flat shoulder grafting head 1 of described joint welding is fixed together by cap nut 3 with a pipe screw joint 2; Described joint welding is propped up pipe screw joint and is also comprised seal ring 4, and described seal ring 4 is an O shape rubber seal, and a pipe screw joint 2 circumferentially is processed with annular groove 2 one 1 with the adjacent face upper edge of the flat shoulder grafting head 1 of joint welding, and O shape rubber seal 4 is housed in the annular groove 2-1.
Embodiment two: in conjunction with Fig. 3 explanation, the outer side wall of described pipe screw joint 2 of present embodiment is processed with two planes, and two planes are symmetrical arranged with respect to the center line that props up pipe screw joint 2.So be provided with, be convenient to screwing of a pipe screw joint 2 and cap nut 3.Other is identical with mode of execution one.
Working procedure:
With an end and copper pipe 5 overlap joints of a pipe screw joint 2, assembly welding is an one; Then O shape rubber seal 4 is packed into and prop up in the annular groove 2-1 of pipe screw joint 2, the other end that props up pipe screw joint 2 is fixed together by cap nut 3 and the flat shoulder grafting head 1 of joint welding.

Claims (2)

1. one kind is adopted the joint welding of O shape rubber seal sealing to prop up pipe screw joint, described joint welding is propped up pipe screw joint and is comprised the flat shoulder grafting head of joint welding (1), pipe screw joint (2) and cap nut (3), and the flat shoulder grafting head of described joint welding (1) is fixed together by cap nut (3) with a pipe screw joint (2); It is characterized in that: described joint welding is propped up pipe screw joint and is also comprised seal ring (4), described seal ring (4) is an O shape rubber seal, the adjacent face upper edge of propping up pipe screw joint (2) and the flat shoulder grafting head of joint welding (1) circumferentially is processed with annular groove (2-1), and O shape rubber seal (4) is housed in the annular groove (2-1).
2. pipe screw joint is propped up in the joint welding of employing O shape rubber seal according to claim 1 sealing, it is characterized in that: the outer side wall of described pipe screw joint (2) is processed with two planes, and two planes are symmetrical arranged with respect to the center line that props up pipe screw joint (2).
CN 201020658249 2010-12-14 2010-12-14 Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring Expired - Lifetime CN201875312U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201020658249 CN201875312U (en) 2010-12-14 2010-12-14 Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201020658249 CN201875312U (en) 2010-12-14 2010-12-14 Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring

Publications (1)

Publication Number Publication Date
CN201875312U true CN201875312U (en) 2011-06-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201020658249 Expired - Lifetime CN201875312U (en) 2010-12-14 2010-12-14 Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring

Country Status (1)

Country Link
CN (1) CN201875312U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102840404A (en) * 2012-09-13 2012-12-26 中国石油集团工程设计有限责任公司 High pressure movable joint and movable jointing method
CN103123021A (en) * 2011-11-21 2013-05-29 中国航空工业集团公司沈阳发动机设计研究所 Connection structure of vent line penetrating through engine box
CN106402530A (en) * 2016-10-31 2017-02-15 北京宇航系统工程研究所 Reusable sealing connection structure
CN108343799A (en) * 2017-12-28 2018-07-31 武汉船舶通信研究所(中国船舶重工集团公司第七二二研究所) A kind of plumbing installation

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103123021A (en) * 2011-11-21 2013-05-29 中国航空工业集团公司沈阳发动机设计研究所 Connection structure of vent line penetrating through engine box
CN103123021B (en) * 2011-11-21 2015-04-08 中国航空工业集团公司沈阳发动机设计研究所 Connection structure of vent line penetrating through engine box
CN102840404A (en) * 2012-09-13 2012-12-26 中国石油集团工程设计有限责任公司 High pressure movable joint and movable jointing method
CN106402530A (en) * 2016-10-31 2017-02-15 北京宇航系统工程研究所 Reusable sealing connection structure
CN106402530B (en) * 2016-10-31 2018-11-23 北京宇航系统工程研究所 A kind of reusable Hermetical connecting structure
CN108343799A (en) * 2017-12-28 2018-07-31 武汉船舶通信研究所(中国船舶重工集团公司第七二二研究所) A kind of plumbing installation

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Grand New Power Co., Ltd.

Assignor: No.703 Inst of China Chip Heavy Ind Group Co.

Contract record no.: 2012230001666

Denomination of utility model: Lap welding branch pipe threaded joint sealed by O-shaped rubber sealing ring

Granted publication date: 20110622

License type: Exclusive License

Record date: 20120910

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
CX01 Expiry of patent term

Granted publication date: 20110622

CX01 Expiry of patent term