CN203248861U

CN203248861U - Pipeline loosening-resistant thread connector

Info

Publication number: CN203248861U
Application number: CN 201320202812
Authority: CN
Inventors: 杨嘉奕; 关卫红; 杨涛
Original assignee: Bohai Shipyard Group Co Ltd
Current assignee: Bohai Shipbuilding Heavy Industry Co Ltd
Priority date: 2013-04-22
Filing date: 2013-04-22
Publication date: 2013-10-23
Anticipated expiration: 2023-04-22

Abstract

The utility model provides a pipeline loosening-resistant thread connector. A square shoulder connector is connected on a pipeline at one end. A loosening-resistant nut is connected to the square shoulder connector through threads. A middle thread connector is connected to a pipeline at the other end. The middle thread connector and the outer side of the square shoulder connector are sleeved with outer sleeve nuts. A sealing gasket is arranged at a pipeline end between the middle thread connector and the square shoulder connector. The pipeline loosening-resistant thread connector is convenient to use and strong in firmness, and meanwhile sealing performance of a pipeline connection portion can be improved, and the purposes of loosening resistance, leakage resistance and locking are achieved. The pipeline loosening-resistant thread connector is suitable for being used as a pipeline connector.

Description

Pipeline checknut joint

Technical field

The utility model provides the inipple that pipeline connects, specifically pipeline checknut joint.

Background technique

At present, in the CB56 of existing use, CB316, CB821, the CB822 inipple standard, equal thread engagement by cap nut and intermediate thread joint, gasket seal between the compression intermediate thread joint peace shoulder grafting head, thereby realize connection and the sealing of pipeline, but, because this Placement is without locking measure, in the long-term use of pipeline, running, the thread engagement place of inipple is along with pipeline vibration comes off gradually, thereby cause the leakage of system pipeline medium, form potential safety hazard.

The model utility content

In order to overcome the defective of existing pipe joint, the utility model provides pipeline checknut joint.This joint holds out against cap nut by spinning lock nut on the flat shoulder grafting head by lock nut, solves that pipe joint is locking, the technical problem of leakproof and locking.

The scheme that the utility model technical solution problem adopts is:

At one end be connected with flat shoulder grafting head on the pipeline, at the flat shoulder grafting head lock nut that has been threaded, be connected with the intermediate thread joint on the other end pipeline, the outside at intermediate thread joint peace shoulder grafting head is set with cap nut, and the pipeline end between intermediate thread joint peace shoulder grafting head is equipped with gasket seal.

Flat shoulder grafting head is provided with outside thread, is equipped with internal thread in the lock nut, and the outer rim of intermediate thread joint is provided with outside thread, is equipped with internal thread in the cap nut.

Good effect, the utility model is easy to use, and steadiness is strong, simultaneously can improve the sealing of pipeline joint, reaches the purpose of locking, leakproof and locking.Suit to use as pipe joint.

Description of drawings

Fig. 1 is the utility model structural drawing

Among the figure, 1. flat shoulder grafting head, 2. intermediate thread joint, 3. cap nut, 4. lock nut, 5, gasket seal, 6. pipeline.

Embodiment:

According to the figure, at one end be connected with flat shoulder grafting head 1 on the pipeline 6, at the flat shoulder grafting head lock nut 4 that has been threaded, be connected with intermediate thread joint 2 on the other end pipeline, the outside at intermediate thread joint peace shoulder grafting head is set with cap nut 3, and the pipeline end between intermediate thread joint peace shoulder grafting head is equipped with gasket seal 5.

Using process of the present utility model:

First lock nut and cap nut are overlapped successively at one end on the pipeline, again with flat shoulder grafting head and intermediate thread joint thread engagement at one end on pipeline and the other end pipeline respectively, fixing seal pad between flat shoulder grafting head and intermediate thread splice port, again with cap nut from flat shoulder grafting head to the intermediate thread joint one side screw thread tighten, the power that applies screws in the outside thread place of flat shoulder grafting head with lock nut, fits tightly with the end face of cap nut.The power of applying makes the screw pair of lock nut and flat shoulder grafting head produce axial force, increases the frictional force of screw pair, and cap nut gets loose when preventing pipeline vibration.

Characteristics:

Owing to screwed lock nut at cap nut one end, therefore can prevent that cap nut from releasing, be unlikely to cause connecting end loosening, and prevent the pipe joint leakage.

Pipeline checknut joint structure of the present utility model is simple, easy to use, and can realize the function of locking, leakproof and the locking of pipe joint, improves the safety and reliability that pipeline uses.

Claims

1. pipeline checknut joint, it is characterized in that: at one end be connected with flat shoulder grafting head (1) on the pipeline (6), at the flat shoulder grafting head lock nut (4) that has been threaded, be connected with intermediate thread joint (2) on the other end pipeline, the outside at intermediate thread joint peace shoulder grafting head is set with cap nut (3), and the pipeline end between intermediate thread joint peace shoulder grafting head is equipped with gasket seal (5);