A special refractory rubber hose for controllable expansion oil field and its preparation method

A technology of fire-resistant rubber hose and fire-resistant glue, which is applied in the protection of hoses, pipes, and pipelines. It can solve the problems of obvious fire-resistant effect, difficulty in meeting harsh environments, and failure of rubber inner tubes, and achieve strong hot airflow and heat radiation. , Excellent controllable expansion performance, the effect of expanding the internal space

Active Publication Date: 2017-12-19
HEBEI SIBERIA SPECIAL RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods can improve the service life of the oil pipe to a certain extent, but the fire-resistant effect is difficult to meet the needs of harsh environments and the requirements of long-term use. The main reasons are: (1) the rubber oil pipe with a flame-retardant layer. The thermal conductivity is high, the heat insulation effect is not good, and the heat is transferred to the rubber inner tube through the surface layer, resulting in the failure of the rubber inner tube; (2) add a fire-resistant sleeve to the rubber tube, taking the silicone rubber fire-resistant sleeve as an example, the thickness of the sleeve is certain And not expandable, fire-resistant effect is obvious, heat insulation effect is limited; (3) the above-mentioned third scheme can be fire-resistant and heat-insulating, but the price of refractory rubber is high, resulting in an increase in cost; After the heat insulation layer fails, the whole rubber tube needs to be replaced, which not only affects the production, but also increases the maintenance cost of the equipment

Method used

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  • A special refractory rubber hose for controllable expansion oil field and its preparation method
  • A special refractory rubber hose for controllable expansion oil field and its preparation method
  • A special refractory rubber hose for controllable expansion oil field and its preparation method

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preparation example Construction

[0035] The invention provides a method for preparing a special fire-resistant rubber hose for controllable expansion oil fields, which combines Figure 1A-1D , the steps of the preparation method are as follows:

[0036] The first step is the preparation of the rubber inner tube 1 .

[0037] The rubber inner tube is prepared by an open mill, an extruder and a winding machine. The rubber inner tube is divided into an inner rubber layer, a reinforcing layer and an outer rubber layer, wherein the inner rubber layer is a rubber with oil resistance function, which can be selected from nitrile rubber (temperature resistance less than 125°C), acrylic rubber (temperature resistance 150-200°C), fluororubber (temperature resistance 200-250°C) and other rubbers; the reinforcement layer is braided fabric, including carbon fiber, glass Fiber, basalt fiber, aramid fiber, metal wire and other fibers or wires prepared by one or more of the braids; the outer rubber layer is a rubber protectiv...

Embodiment 1

[0071] The method provided by the present invention is used to prepare the fire-resistant rubber tubing specially used for controllable expansion oil fields with a high-efficiency thermal protection structure, as follows:

[0072] The first step is to prepare the rubber inner tube. Select the rubber material of the inner rubber layer and the outer rubber layer, knead on the open mill and add relevant additives, and set aside. To produce rubber tubing with an inner diameter of 10±0.5mm and a wall thickness of 10.5±0.5mm (the thickness of the fluororubber inner layer is 7mm, the thickness of the reinforcement layer is 0.5mm, and the thickness of the epichlorohydrin rubber outer layer is 3mm), the method steps are as follows:

[0073] (1) The fluororubber inner rubber layer is extruded through the extruder, and the extrusion temperature is 70°C, 60°C, 60°C, 60°C from the machine head to the screw;

[0074] (2) Use aramid fiber to weave the reinforcement layer, wrap it on the sur...

Embodiment 2

[0084] Adopt the method provided by the invention to prepare the rubber oil pipe with efficient thermal protection structure, specifically as follows:

[0085] The first step is to prepare the rubber inner tube. Mix the rubber of the inner rubber layer and the outer rubber layer on an open mill and add relevant additives for later use. To produce rubber tubing with an inner diameter of 10.0±0.5mm and a wall thickness of 10.5±0.5mm (the thickness of the fluorine rubber inner rubber layer is 7.0mm, the thickness of the reinforcing layer is 0.5mm, and the thickness of the epichlorohydrin rubber outer rubber layer is 3mm), the method steps are as follows :

[0086] (1) The fluorine rubber inner rubber layer is extruded through the extruder, and the extrusion temperature is 80°C, 70°C, 70°C, 70°C from the machine head to the screw;

[0087] (2) Use aramid fiber to weave the reinforcement layer, wrap it on the surface of the inner rubber layer, and start to extrude the outer rubbe...

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Abstract

The invention discloses a controlled expansion fire-resisting rubber pipe special for an oil field and a manufacturing method of the controlled expansion fire-resisting rubber pipe and belongs to the technical field of composites and manufacturing of the composites. An expansion heat insulation layer, a grid strengthening layer and a flame retarding protection layer are sequentially manufactured on the outer surface of an inner rubber pipe, and the controlled expansion fire-resisting rubber pipe special for the oil field is obtained. The manufacturing method is high in efficiency, low in cost, simple in technology and capable of achieving batch production; the rubber pipe has efficient thermal protection performance and controlled expansion performance, the rubber pipe insulates heat and does not expand when at a low temperature, the rubber pipe expands and insulates heat when at a high temperature, the good controlled expansion performance and the good heat insulation performance are achieved, product reliability is good, the service life is expected to be prolonged to half a year, and the rubber pipe can be well applied to the oil industry.

Description

technical field [0001] The invention belongs to the technical field of composite materials and their preparation, and relates to a composite-structure rubber oil pipe with controllable expansion, flame-retardant performance and high-efficiency thermal protection performance. Specifically, it refers to a special fire-resistant rubber hose for controllable expansion oil fields and a preparation method thereof. Background technique [0002] Hydraulic rubber tubing used in high-temperature environments with heat sources or heat radiation sources in oil field well control operations has excellent oil resistance, pressure resistance, bending resistance, fatigue resistance, etc., but because the heat resistance temperature of rubber is lower than 200 ° C When used in a high-temperature environment (600-1200°C), it is easy to age and decompose, resulting in rupture of the oil pipe and failure of the hydraulic system. The oil pipe needs to be replaced frequently, and the service life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/08F16L57/02F16L59/02F16L59/08F16L57/04
CPCF16L11/085F16L57/02F16L57/04F16L59/029F16L59/08
Inventor 王凤岭杨中甲
Owner HEBEI SIBERIA SPECIAL RUBBER
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