CN2039375U - Mechanical joint - Google Patents

Abstract

The utility model discloses a field pipe line (which can be loaded and unloaded) quick connect joint suitable for mechanical connection (also used for manual loading and unloading). The utility model is characterized in that the utility model is suitable for achieving the mechanize pipelaying operation of the pipelayer (cart) for the field pipe line because of the short connection time and the few operating sequence. The mechanical joint is can also be used for the pipe line which requires dismount and transition frequently in manual work. The major technical character of the utility model is that a rubber ring is in flat form, so the inner diameter and the taper of an apron ring are increased properly. A connector adopts a spring piece and a buckled block. The pipes which require to be connected are aligned and insert into the connector, then a pipe end fillister is automatically locked by the buckled block, so the pipes are connected together. Connecting the pipes in this way, has the advantages of rapidity, reliability, good sealing performance, large extension and large outer corner.

Description

Mechanical joint

A kind of mechanical connection field petroleum pipeline of (also can be used for manual loading and unloading) (can load and unload pipeline) fast connecting joint that is used for.

This technical field discloses the basic structure (Fig. 1) by standard MIL-C-10387G of U.S. army and the standard MT35-79 of Ministry of Coal Industry " GTT, GTH type tube head " at present.This pipe joint claims the trough ring joint in army, claim the clip soft rapid joint in piping at home again.This pipe joint mainly is made up of nut (1), swing bolt (2), connector (3), cushion rubber (4) and pipe end trough (5).Connector (3) is to be used to connect pipe and accessory, and it can block pipe, fixedly cushion rubber (4) and bear the swelling pressure of cushion rubber (4).Cushion rubber (4) is following fixing of connector (3), is used for the flange of the continuous two pipe end troughs (5) of sealing.Cushion rubber (4) is a shape, and during annular chamber, cushion rubber (4) will swell in the liquid that pressure is arranged in the pipe is full of cushion rubber (4), is attached to tightly on the flange of pipe end trough (5), and pressure is bigger, and sealing is tighter.But when joint is installed, need earlier cushion rubber (4) to be enclosed within on the flange of pipe end trough (5), after the pipe centering, the connector that closes (3) is tightened left and right a pair of nut (1) then.The charge and discharge operations operation is many, complicated, the installation time is longer, is difficult for realizing quick mechanization connection and demolition.

The purpose of this utility model provides a kind of good seal performance, and charge and discharge operations is easy, and operation is few, the joint of quick connection of special suitable for mechanization and demolition.

Mechanical type jointing described in the utility model is the sealing principle that utilizes existing joint, adopts 2 pairs of spring sheets, fixture block.As long as will insert in the connector with the pipe of pipe end trough, fixture block is stuck in the groove of trough tightly, just can couple together pipe.

Structure of the present utility model such as Fig. 2 are made up of nut (1) and bolt (2), connector (3), cushion rubber (4), pipe end trough (5).

Connector such as Fig. 3 are made up of fixture block (3.1), spring sheet (3.2), housing (3.3), dust-proof cover (3.4), half positioning block (3.5), positioning block (3.6) and taper pin (3.7).Self-locking mechanism of the present utility model is made up of 4 * 2 fixture blocks (3.1) and 4 * 2 flat spring sheets (3.2).Spring sheet (3.2) is formed by spring sheet metal stamping-out, fixture block (3.1) band arc is block, end face has chamfering, the pipe of band pipe end trough (5) is by after axially pushing, fixture block (3.1) opens slowly, and trough (5) back that puts in place snaps in fixture block (3.1) by the tension of spring sheet (3.2) in the groove of pipe end trough (5) pipe is pinned.Cushion rubber (seeing Fig. 4 for details) cross section is a flat, make by oil resistant, nitrile rubber that cold tolerance is good, suitably dwindle outer diameter D and increase width B to improve compressive strength, for increasing the corner and the extending amount of joint, the diameter d of suitable increase cushion rubber (4) inner ring and the tapering α of both sides apron ring are beneficial to the insertion of pipe end trough (5).

The end face of pipe end trough (5) also has chamfering, and with the end face chamfering of connector fixture block (3.1), the tapering of cushion rubber (4) shirt rim, both sides cooperatively interacts, and pipe end can be inserted smoothly.

The utility model needs certain axial internal clearance when loading and unloading, be connection and the dismounting that solves online pipe, and connector (3) adopts semi-circular, and the centre tightens up with pair of bolts (2) and nut (1).

The utility model compared with prior art its characteristics is: the one, and installation, take-down time weak point, three people operate prior art by hand needs 1.5-2 minute, and the utility model only needs about 30 seconds; The 2nd, operational sequence is few, and the utility model only needs pipe alignment connector (3), push along axial direction.Because operation is simple, fully can be on-the-spot in the open air, realize the mechanization laying with pipelayer (car), improve the speed of pipeline installation, alleviate labor intensity of operating personnel; The 3rd, advanced in performance.Permission pipe end of the present utility model gap is 10 millimeters, and prior art is 8 millimeters, and corner of the present utility model is 4 °, and prior art only be 2 ° 43 '.

The drawing explanation:

Fig. 1 is the plan view of prior art.

Fig. 2 is a plan view of the present utility model.

Fig. 3 is the sectional view of the utility model connector.

Fig. 4 is the cushion rubber plan view.

Fig. 5 is the plan view that the utility model is applied to the example of 150 millimeters field operations transport pipe.

An example of the present utility model is the mechanical type jointing that is used for 150 millimeters field oil pipe-lines.Fig. 5 has showed that the main structure of this joint comes, and its important technological parameters is as follows:

Nominal diameter: 150mm;

Tube outer diameter: 159mm;

Maximum service pressure: 4000kpa;

Allow pipe end gap: 10mm;

Corner: 4 °;

Connector outer diameter: 242mm;

Connector width: 92mm;

Joint extreme length: 107mm;

Gross mass: 11.17kg

Claims (4)

1, a kind of rapid pipe joint that is applicable to that mechanization connects, it is made up of pipe end trough (5), cushion rubber (4), connector (3), bolt (2) and nut (1).It is characterized in that connector (3) has self-locking mechanism.After the pipe of band pipe end trough inserted connector (3), self-locking mechanism pinned pipe automatically.

2,, it is characterized in that self-locking mechanism is made up of 4 * 2 fixture blocks (3.1) and 4 * 2 flat spring sheets (3.2) according to the joint of claim 1.Fixture block (3.1) band arc is block, and end face has and the corresponding chamfering of pipe end trough (5), and spring sheet is to form with spring sheet metal, stamping-out.

3, according to the joint of claim 1, it is characterized in that cushion rubber (4) is a flat, the increase that inner diameter is suitable, the both sides apron ring has certain tapering.

4, according to claim 1,2,3 joint, it is characterized in that the chamfering of pipe end trough (5) and fixture block (3) end face, the tapering of cushion rubber (4) both sides apron ring cooperatively interact suitably.

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