High-pressure flexible rubber hose and joint connecting method thereof

A rubber hose, flexible technology, applied in the direction of pipes/pipe joints/fittings, hoses, pipes, etc., can solve the problems of penetration, stainless steel sleeve failure, weak capacity, etc., to achieve the elimination of displacement and creep, excellent flexibility Effect

Active Publication Date: 2013-11-20
山东悦龙橡塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]There is also a rubber-type structural process, the inner lining layer is made of rubber elastic body, the ability of rubber elastic body to resist the transport of gas-liquid mixture medium is weak, in the hose It is inevitable that there will be permeation during the use, which will cause internal air bubbles under the condition of alternating pressure. Even in the case of stainless steel lining, air bubbles will also be generated and cause the stainless steel sleeve of the inner lining to fail.

Method used

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  • High-pressure flexible rubber hose and joint connecting method thereof
  • High-pressure flexible rubber hose and joint connecting method thereof
  • High-pressure flexible rubber hose and joint connecting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like image 3The high-pressure flexible rubber hose shown includes, from the inside to the outside, an inner stainless steel spiral bushing, an adhesive and buffer layer 1, a semi-crystalline thermoplastic bushing, an adhesive and buffer layer 2, an inner rubber cloth layer, a steel wire rope reinforcement layer, Adhesive buffer middle rubber layer, heat insulation layer, fire-resistant flame-retardant layer, stainless steel outer protective layer. image 3 Shown is a joint connection method of a typical pipe body structure with inner and outer stainless steel spiral sleeves:

[0039] After the hose is inserted into the joint 11, the semi-crystalline thermoplastic bushing 3 and the metal sleeve are respectively inserted into the corresponding seams of the joint 11, and the joint and the pipe body are fixedly connected as a whole by the resin 19. The resin is a high-strength and easy-flowing two-component, preferably epoxy resin, which connects the pipe body and the joi...

Embodiment 2

[0049] As shown in Figure 4, the high-pressure flexible rubber hose includes, from the inside to the outside, an inner stainless steel spiral bushing, an adhesive and buffer layer 1, a semi-crystalline thermoplastic bushing, an adhesive and buffer layer 2, an inner rubber cloth layer, Steel wire rope reinforcement layer, bonded buffer intermediate rubber layer, heat insulation layer, fire-resistant and flame-retardant layer. like Figure 4 As shown, it is a joint connection method with an inner stainless steel helical sleeve and no outer protective layer of stainless steel helical sleeve. The structure lacks the sealing area 12, and the sealing ring 13 acts on the semi-crystalline thermoplastic bushing 3 Changed to act on the tapered sleeve.

[0050] After the hose is inserted into the joint 11, the semi-crystalline thermoplastic bushing 3 and the metal sleeve 18 are respectively inserted into the corresponding seams of the joint 11, and the joint and the pipe body are fixedl...

Embodiment 3

[0058] According to the above-mentioned hose structure design, an air hose with an inner diameter of 76mm was produced, and the working pressure of the hose was 52Mpa. After coating adhesive on the surface of the inner stainless steel spiral sleeve 1, lay a buffer rubber layer, place a semi-crystalline thermoplastic bushing, the bushing wall thickness is 4mm, made of PVDF, coat the inside and outside with adhesive, lay buffer glue, Build the inner tape layer, wrap 4 layers of polyester canvas, and wind 4 layers of 4.5mm steel wire rope to make the hose skeleton layer to bear the blasting strength. Adhesive buffer middle rubber layer is laid between the layers and inside and outside of each layer of steel wire rope, laid in it during the winding of the steel wire rope, filled in the gap of the steel wire rope after vulcanization, and bonded to the surface of the steel wire rope to play the role of cushioning pad and bonding effect. The cord or canvas woven with glass fiber is ...

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Abstract

The invention provides a high-pressure flexible rubber hose and a joint connecting method of the high-pressure flexible rubber hose. The high-pressure flexible rubber hose comprises an inner hemihedral-crystal-shaped thermoplastic plastic lining, an inner adhesive tape layer, a steel wire rope reinforcing layer, a middle bonding buffering glue layer, a heat insulating layer and a fire-proof inflaming retarding layer from inside to outside. When connection is carried out, the end portion of the high-pressure flexible rubber hose is inserted into a connection and sealing area of a joint and completely connected with a sealing part, resin having the cross linking function and a metal joint into a whole. The high-pressure flexible rubber hose has the excellent flexibility, the high-pressure resistance, the gas permeability resistance and the high-temperature resistance in use.

Description

technical field [0001] The invention belongs to the technical field of rubber products, and relates to a structure, installation and manufacturing method of a high-pressure flexible rubber hose. Background technique [0002] In oil drilling and extraction, a high-pressure hose with a large diameter (51-127mm) for transporting gas, liquid or gas-liquid mixture is required. This type of hose has two notable features, one is because the gas contains H 2 S-type corrosive gas, this type of gas has a strong corrosive effect on ordinary rubber, and will penetrate into the high-pressure hose body through the inner rubber. When the pressure in the pipe body decreases, the accumulation of the outer rubber The high-pressure gas will form bubbles, push the inner rubber to the inner hole, block the tube body, and cause early damage to the hose. The second is that the hose is used in a flammable environment. For safety reasons, the surface of the hose is required to have fire resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/12
Inventor 崔国
Owner 山东悦龙橡塑科技有限公司
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