CN205078971U - No weld bond ji huiguandao of high pressure - Google Patents

Abstract

The utility model provides a no weld bond ji huiguandao of high pressure, its characterized in that: include square trunk line, branch road pipeline and be located sealed pad between square trunk line and the branch road pipeline, the branch road pipeline is a butt welding side of having and attaches the blue or round pipe that attaches the connection orchid of connection, the side attaches the connection orchid or the circle attaches the blue and trunk line fixed connection of connection, upward it is provided with the through -hole to correspond the position with the branch road pipeline in square trunk line side, around the through -hole processing have at least four with the side attaches the connection orchid or the circle attaches the flange joint of connecing size assorted screw hole, high -pressure pipeline T -shaped junction welding seam fracture problem has thoroughly been solved to this scheme.

Description

High-pressure weldless manifold

technical field

The utility model relates to the technical field of high-pressure pipeline connection, in particular to the connection technology of a high-pressure main pipeline and a branch pipeline, in particular to a high-pressure non-welded joint collection pipeline.

Background technique

Since the hydraulic technology of cartridge valves was popularized and applied in China in the 1990s, various large and medium-sized forging equipment (hydraulic presses) across the country have been improved, and the "hydraulic press" has been widely used for more than ten years with multi-pump direct supply and PLC program control. , in the hydraulic pump stations of various presses, multiple hydraulic pump pipelines are all assembled and welded on the circular high-pressure conveying main pipeline. This T-shaped welded pipeline has the following disadvantages: 1. The pipeline is long, the welding volume is large, and the welding process It is difficult to guarantee; 2. During the operation of the equipment, the frequency of dry operation and high-pressure operation is relatively high, and the resonance is strong, which is easy to cause the pipe wall to expand and contract, and the probability of expansion is frequent, resulting in alternating cracks, open welding, and high-pressure leakage of all pipe welds, seriously hindering production. , It is easy to cause fire, and gas cutting, polishing, and repair welding must be carried out during emergency repairs. It is very easy to drop oxidized iron scale and welding slag on the inner wall of the pipeline into the hydraulic oil, causing serious damage to various hydraulic components, blockage, and valve jamming.

Contents of the invention

In order to thoroughly solve a series of problems caused by the opening of the welding joint at the T-shaped joint between the high-pressure main pipeline and the branch pipeline, the utility model provides a high-pressure pipeline with a new connection structure.

The scheme adopted by the utility model is: a high-pressure non-welded joint collection pipeline, including a square main pipeline, a branch pipeline, and a gasket for sealing between the square main pipeline and the branch pipeline, and the branch pipeline is connected to the main pipeline. The pipe connection is in the shape of a "D", and the branch pipe is a round pipe with a square attachment flange or a round attachment flange welded at one end. The square attachment flange or round attachment flange on the branch pipe is connected to the main pipe. Fixed connection; a through hole is provided on the side of the square main pipe corresponding to the branch pipe, the square pipe and the branch pipe communicate through the through hole, and at least four attachment methods are processed around the through hole The flange or round attachment flange is connected to a threaded hole of matching size, and the branch pipe is fixed on the square main pipe through bolts matching the threaded hole.

As an optimization, the square main pipe is a forged part, and in order to ensure the strength of the pipe, the wall thickness of the square main pipe is not less than 60mm.

As an optimization, the side of the square pipe is provided with protrusions at intervals, and the through holes where the square pipe communicates with the branch pipes and the threaded holes for fixing the branch pipes are all located on the protrusions, so as to strengthen the strength of the pipes at the through holes and increase the thread The wall thickness.

As an optimization, the sealing gasket is a copper gasket to avoid damage to the sealing gasket due to long-term high temperature, high pressure, and oil immersion.

As an optimization, the through holes on the side of the square main pipe corresponding to the branch pipes are circular through holes, which are convenient for processing and have better matching with square attachment flanges or round attachment flanges.

Compared with the prior art, the beneficial effect of the utility model is: by changing the connection mode from welding to bolt connection, the problem of weld cracking at the T-shaped connection part of the high-pressure pipeline is completely solved, thereby avoiding oil leakage, oil pollution, etc. question.

Description of drawings

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

Fig. 2 is an enlarged view of A in Fig. 1 .

Fig. 3 is a schematic diagram of B-B in Fig. 1 .

detailed description

Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described.

Embodiment 1, as shown in Figures 1-3, the high-pressure non-welded joint collection pipeline includes a square main pipeline 2, a branch pipeline 1 and a gasket 3 between the square main pipeline 2 and the branch pipeline 1, the The branch pipeline 1 includes a square attachment flange 5 and a round pipe 4 that are welded, and is fixedly connected to the main pipeline 2 through the square attachment flange 5. The square attachment flange 5 implements the standard JB/T2007-84, including screws 3 , the connecting pipe 10 and the flange 6; the square main pipe 2 is obtained by forging, and the wall thickness is 62 mm. On the side of the square main pipe 2 corresponding to the branch pipe 1, a protrusion 8 is provided, and a round pipe is arranged on the protrusion 8. The through hole 9 is processed with at least four threaded holes 7 matching the connection size of the square attachment flange 5 around the circular through hole 9; the sealing gasket 3 is selected as a red copper gasket.

Embodiment 2, when the diameter of the branch pipe is large, replace the square attachment flange in Embodiment 1 with a round attachment flange, and the position size and aperture of the threaded hole 7 are compatible with the round attachment flange , all the other with embodiment one.

The above is only a preferred embodiment of the utility model, and the scope of protection of the utility model is not limited to the above-mentioned embodiments. All technical solutions under the idea of the utility model all belong to the scope of protection of the utility model. It should be pointed out that for Those of ordinary skill in the art may make some improvements and modifications without departing from the principles of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims (5)

1. high-pressure weldless mouth Ji Huiguandao, it is characterized in that: comprise square main pipeline, bypass line and the sealing gasket between described square main pipeline and bypass line, described bypass line is the pipe of one end side of being welded with attachment flange or circle attachment flange, and described side's attachment flange or circle attachment flange are fixedly connected with square main pipeline; Described square main pipeline side is provided with through hole with bypass line corresponding position, is processed with at least four around described through hole and is attached flange or the round tapped hole being attached Flange joint size and matching with described side.

2. high-pressure weldless mouth Ji Huiguandao according to claim 1, is characterized in that: described square main pipeline is forge piece, and wall thickness is not less than 60mm.

3. high-pressure weldless mouth Ji Huiguandao according to claim 1, is characterized in that: described square pipe side is arranged at intervals with projection, and described through hole, tapped hole are all positioned in projection.

4. high-pressure weldless mouth Ji Huiguandao according to claim 1, is characterized in that: described sealing gasket is red copper pad.

5. high-pressure weldless mouth Ji Huiguandao according to claim 1, is characterized in that: the through hole that square main pipeline side is arranged with bypass line corresponding position is manhole.