CN203010067U - Gas transport pipe system - Google Patents

Abstract

The utility model discloses a gas transport pipe system which comprises a corrugated pipe, joints and a double-end nut, wherein the joints are connected on the end portion of the corrugated pipe, and the double-end nut is used for being connected with two joints. Each joint is composed of a joint body, a sealing ring, a clamping part and a connecting nut, wherein the clamping part is arranged on an outer wall of the corrugated pipe in a clamping mode, one end of the joint body abuts against the end portion of the corrugated pipe by the sealing ring, outer threads are arranged at both ends of the joint body, one end of the connecting nut is buckled with the clamping part, and the other end of the connecting nut and the joint body are in screw joint. The other end of the joint body and the double-end nut are in screw joint, and a sealing washer is arranged in the double-end nut. The end face of the clamping part is of an arc shape, and a central angle alpha of the arc-shaped end face is 150 degrees-175 degrees. The gas transport pipe system is not only quite quick and convenient to install, but also high in connecting firmness and good in sealing performance.

Description

A kind of fuel gas transportation pipeline system

Technical field

The utility model belongs to five metals tubing technical field, is specifically related to metal fuel gas transportation pipeline technology.

Background technique

In prior art, the filling type fuel gas transportation pipeline adopts metal bellows usually, and bellows is welded to connect head at its two ends usually, so that be connected with miscellaneous equipment, still, when needing the bellows of given length, just needs the on-the-spot connecting head of installing.Because the connecting head of prior art adopts the mode of argon arc welding to connect substantially, outdoor as gas pipeline if bellows is embedded in, use welding manner to operate cumbersome, and can not ensure well the sealing of bellows and its joint.

Summary of the invention

The purpose of this utility model is: the deficiency of inconvenience is installed for the prior art gas supply pipe, provides a kind of easy to connect, the fuel gas transportation pipeline system that sealability is good.

For realizing the purpose of the utility model, be achieved by the following technical solutions: a kind of fuel gas transportation pipeline system, include bellows, be connected to the joint of corrugated tube end, and in order to connect the Double-ended nut of two joints; Described joint includes joint body, seal ring, Fastener and attaching nut, described Fastener is connected to the bellows outer wall, described joint body one end offsets by seal ring and corrugated tube end, described joint body two ends are equipped with outside thread, attaching nut's one end fastening Fastener, the other end and joint body are spirally connected; The described joint body the other end and Double-ended nut are spirally connected, and are provided with seal washer in Double-ended nut.

As preferred version: described Fastener end face is circular arc, and circular arc end face central angle a is that 150 degree are to 175 degree.

Compared with prior art, the beneficial effects of the utility model are: owing to using the jiont treatment that is made of joint body, seal ring, Fastener and attaching nut at corrugated tube end, the joint the other end can directly be connected with the port of relevant device or use Double-ended nut to be connected with another root bellows, not only install very convenient quick, and degree of being connected firmly is high, good seal performance.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation of the Fastener part of joint.

1, bellows; 2, joint; 21, seal ring; 22, Fastener; 23, attaching nut; 24, joint body; 3, Double-ended nut; 31, seal washer.

Embodiment

The below makes a detailed explanation embodiment of the present utility model with reference to the accompanying drawings.

Embodiment

According to illustrated in figures 1 and 2, the described a kind of fuel gas transportation pipeline of the present embodiment system includes bellows 1, is connected to the joint 2 of bellows 1 end, and the Double-ended nut 3 in order to connect two joints 2; Described joint 2 includes joint body 23, seal ring 21, Fastener 22 and attaching nut 23, described Fastener 22 is connected to bellows 1 outer wall, described joint body 24 1 ends offset by seal ring 21 and bellows 1 end, described joint body 24 two ends are equipped with outside thread, attaching nut's 23 1end fastening Fasteners 22, the other end and joint body 24 are spirally connected; Described joint body 24 the other ends and Double-ended nut 3 are spirally connected, and are provided with seal washer 31 in Double-ended nut 3.

Described Fastener 22 end faces are circular arc, and circular arc end face central angle a is that 150 degree are to 175 degree.After twoFasteners 22 fastened on bellows 1, Fastener 22 two ends did not contact.

Described Fastener 22 is provided with interior edge towards the one side of bellows 1, and another side is provided with outer edge of the backstop attaching nut 23, and Fastener 22 is restricted between bellows 1 and attaching nut 23.Be provided with the retaining wall that coordinates with the outer edge ofFastener 22 on corresponding attaching nut 23.

When bellows 1 is installed, first in bellows 1 two ends erection joint 2, at two bellowss, 1 joint use Double-ended nut 3, two joints 2 are connected, the two ends of whole pipeline are connected with the port of relevant device by joint 2.

During erection joint 2, first attaching nut 23 is set on bellows 1, then with twoFasteners 22 and bellows 1 end outer side wall, regulating attaching nut 23 makes twoFasteners 22 be positioned at attaching nut 23, again seal ring 21 is put into joint body 24, joint body 24 is aimed to screw with attaching nut 2 get final product.

During erection joint body 24, need first joint body 24 first to be connected with Double-ended nut 3 or the installation port connection of relevant device after, then carry out other operation.

Claims (2)

1. fuel gas transportation pipeline system is characterized in that: includes bellows, is connected to the joint of corrugated tube end, and in order to connect the Double-ended nut of two joints; Described joint includes joint body, seal ring, Fastener and attaching nut, described Fastener is connected to the bellows outer wall, described joint body one end offsets by seal ring and corrugated tube end, described joint body two ends are equipped with outside thread, attaching nut's one end fastening Fastener, the other end and joint body are spirally connected; The described joint body the other end and Double-ended nut are spirally connected, and are provided with seal washer in Double-ended nut.

2. a kind of fuel gas transportation pipeline according to claim 1 system, it is characterized in that: described Fastener end face is circular arc, and circular arc end face central angle a is that 150 degree are to 175 degree.

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