Full-bore ultrahigh-pressure rubber hose

Abstract

The utility model discloses a full-bore ultrahigh-pressure rubber hose. Comprising an inner rubber layer, an inner protective layer arranged outside the inner rubber layer, a first middle rubber layer arranged outside the inner protective layer, an auxiliary reinforcing layer arranged outside the first middle rubber layer, a main body reinforcing layer arranged outside the auxiliary reinforcing layer, and a second middle rubber layer arranged outside the main body reinforcing layer, the outer protective layer is arranged on the outer layer of the second middle rubber layer, the joint fastening layer is arranged outside the outer protective layer, the third middle rubber layer is arranged on the outer layer of the joint fastening layer, and the outer rubber layer is arranged on the outer layer of the third middle rubber layer. The full-bore ultrahigh-pressure rubber hose processed in the utility model has the properties of high temperature resistance, corrosion resistance, high sealing property, high pressure resistance, crushing resistance, stretching resistance, super softness and the like, and can be suitable for environments with harsh oil liquid conveying conditions in oil exploration; and the performance characteristic of good universality is also realized.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure rubber hose processing, in particular to a full-diameter ultra-high-pressure rubber hose. Background Art

[0002] In the prior art, patent application number 201921262996.8 is a flexible ultra-high pressure fluid connected pulse-resistant rubber hose, comprising an alloy rubber layer, a skeleton layer, and an outer rubber layer. A skeleton layer is provided on the outside of the alloy rubber layer, and an outer rubber layer is provided on the outside of the skeleton layer. The skeleton layer includes a plastic layer bonded to the alloy rubber layer, a mesh is bonded to the outside of the plastic layer, a first middle rubber layer is bonded to the outside of the mesh, and a first steel wire layer is wrapped around the outside of the first middle rubber layer. The utility model has a reasonable structural design, strong practicality, and a wide range of applications. It is convenient to further improve the bonding effect of the internal structure of the rubber hose, increase its pulse performance, and improve the protection effect of the alloy rubber layer, so as to further effectively improve the service life of the rubber hose and increase the softness of the rubber hose.

[0003] However, the above-mentioned technology has limited application scenarios and is not convenient for use in harsh working negative pressure environments. It also cannot have the properties of high temperature resistance, corrosion resistance, high sealing, high pressure resistance, crush resistance, tensile resistance, and ultra-softness. Utility Model Content

[0004] The utility model aims to provide a full-diameter ultra-high-pressure rubber hose to solve the problem that conventional rubber hoses cannot be used in harsh working negative pressure environments.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model provides a full-diameter ultra-high-pressure rubber hose, comprising an inner rubber layer, an inner protective layer arranged outside the inner rubber layer, a first middle rubber layer arranged outside the inner protective layer, an auxiliary reinforcement layer arranged outside the first middle rubber layer, a main reinforcement layer arranged outside the auxiliary reinforcement layer, a second middle rubber layer arranged outside the main reinforcement layer, an outer protective layer arranged on the outer layer of the second middle rubber layer, a joint fastening layer arranged outside the outer protective layer, a third middle rubber layer arranged on the outer layer of the joint fastening layer, and an outer rubber layer arranged on the outer layer of the third middle rubber layer.

[0007] Furthermore, the material of the inner rubber layer is HNBR synthetic rubber; the material of the first middle rubber layer, the second middle rubber layer, and the third middle rubber layer are all NBR synthetic rubber.

[0008] Furthermore, the inner protective layer and the outer protective layer are both made of rubberized polyester mesh.

[0009] Furthermore, the auxiliary reinforcement layer is a rubber-impregnated polyester cord wrapping layer.

[0010] Furthermore, the main reinforcement layer is a copper-plated steel wire wound around the outside of the auxiliary reinforcement layer.

[0011] Furthermore, the joint fastening layer is a spiral steel wire winding structure.

[0012] Furthermore, the outer rubber layer is made of CR synthetic rubber.

[0013] Furthermore, joints are provided at both ends of the rubber hose through a casting process, and the joints are integrated coreless joints;

[0014] Wherein, at the connection between the rubber hose and the joint, the second middle rubber layer does not need to be provided between the reinforcing layer and the joint fastening layer, wherein the copper-plated steel wire head of the reinforcing layer and the high-carbon steel wire of the joint fastening layer are firstly tied with a strong adhesive tape to be processed;

[0015] A joint is installed on the surface of the steel wire of the joint fastening layer, the end of the joint and the groove are filled and compacted by the middle rubber strip, the end of the joint is along the tube body of the rubber hose, and is aligned with a natural slope according to the wall thickness of the joint;

[0016] The steel wire end of the joint and the rubber hose connection end needs to be flanging, and after fixing, glue is injected at the reserved hole of the joint, and exhaust is performed in stages until the glue is fully filled;

[0017] The adhesive is evenly brushed on the inner and outer surfaces of the joint once each and dried naturally; a layer of middle rubber sheet with a thickness of 1.6 mm is attached to the outer surface of the joint and along the entire body of the rubber hose.

[0018] Furthermore, the outer wall of the joint is provided with a plurality of evenly spaced reserved glue injection holes; and an annular baffle in contact with the end face of the rubber hose is provided inside the joint.

[0019] Compared with the prior art, the beneficial technical effects of the utility model are:

[0020] The full-diameter ultra-high-pressure rubber hose processed in the utility model has the properties of high temperature resistance, corrosion resistance, high sealing, high pressure resistance, crush resistance, tensile resistance, ultra-softness, etc., and can be used in environments with relatively harsh conditions for liquid working medium transportation; it also has the performance characteristics of good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1This is a schematic diagram of the cross-section structure of the full-diameter ultra-high pressure rubber hose of the utility model;

[0023] Figure 2 It is a schematic cross-sectional view of the structure of the full-diameter ultra-high-pressure rubber hose connecting pipe fitting of the utility model.

[0024] Explanation of the accompanying drawings: 1. Inner rubber layer; 2. Inner protective layer; 3. First middle rubber layer; 4. Auxiliary reinforcement layer; 5. Main reinforcement layer; 6. Second middle rubber layer; 7. Outer protective layer; 8. Joint fastening layer; 9. Third middle rubber layer; 10. Outer rubber layer; 11. Joint; 12. Glue injection hole; 13. Annular baffle. DETAILED DESCRIPTION

[0025] like Figure 1-2 As shown, the present embodiment discloses a full-diameter ultra-high pressure rubber hose, comprising an inner rubber layer 1, an inner protective layer 2 installed on the outside of the inner rubber layer 1, a first middle rubber layer 3 installed on the outside of the inner protective layer 2, an auxiliary reinforcement layer 4 installed on the outside of the first middle rubber layer 3, a main reinforcement layer 5 installed on the outside of the auxiliary reinforcement layer 4, a second middle rubber layer 6 installed on the outside of the main reinforcement layer 5, an outer protective layer 7 installed on the outer layer of the second middle rubber layer 6, a joint fastening layer 8 installed on the outside of the outer protective layer 7, a third middle rubber layer 9 installed on the outer layer of the joint fastening layer 8, and an outer rubber layer 10 installed on the outer layer of the third middle rubber layer 9.

[0026] The inner rubber layer 1 is made of HNBR synthetic rubber. The first middle rubber layer 3, the second middle rubber layer 6, and the third middle rubber layer 9 are all made of NBR synthetic rubber.

[0027] In this embodiment, the inner protective layer 2 and the outer protective layer 7 are both rubber mesh fabrics; the auxiliary reinforcement layer 4 is a cord wrapping layer; and the main reinforcement layer 5 is a copper-plated steel wire wrapped around the outside of the auxiliary reinforcement layer 4 .

[0028] In this embodiment, the joint fastening layer 8 is a spiral steel wire winding structure; the outer rubber layer 10 is made of CR synthetic rubber.

[0029] This embodiment discloses a method for manufacturing a full-diameter ultra-high pressure rubber hose, comprising the following steps:

[0030] First, the inner rubber layer 1 with a thickness of 4 mm to 6 mm is wound on the hose mandrel. Specifically, two layers of the inner rubber layer 1 are obliquely wound on the hose mandrel at one time.

[0031] Then, the rubberized polyester mesh is obliquely wound on the outside of the inner rubber layer 1 to form the inner protective layer 2. Specifically, two layers are wound on the inner rubber layer 1 in a cross-wrap manner with an overlap of 10 mm.

[0032] Next, the first middle rubber layer 3 with a thickness of 0.6 mm to 0.8 mm is installed outside the inner protective layer 2;

[0033] Then, four layers of 2000D / 39091 material are alternately wound around the outside of the first middle rubber layer 3 in a 45° inclined winding manner to form the auxiliary reinforcement layer 4;

[0034] Next, a copper-plated steel wire with a diameter of 1.6 mm is wound around the outside of the auxiliary reinforcement layer 4 to form the reinforcement layer 5, so that its tensile strength reaches more than 2150 MPa;

[0035] Then, the second middle rubber layer 6 with a thickness of 0.6 mm to 0.8 mm is installed outside the reinforcement layer 5;

[0036] Next, the outer surface of the second middle rubber layer 6 is obliquely wrapped with a polyester mesh cloth to form the outer protective layer 7. Specifically, two layers are wrapped around the outer surface of the second middle rubber layer 6 in a cross-wrapped manner, and the overlap is 10 mm.

[0037] Then, the joint fastening layer 8 is formed on the outside of the outer protective layer 7 by winding a high-carbon steel wire with a diameter of 3.0 mm;

[0038] Next, the third middle rubber layer 9 with a thickness of 0.6 mm to 0.8 mm is installed outside the joint fastening layer 8;

[0039] Then, the outer rubber layer 10 with a thickness of 4 mm to 6 mm is wound on the outside of the third middle rubber layer 9 in a layered oblique winding and 1 / 2 edge pressing manner;

[0040] After the tube body is formed, it is left to stand naturally to allow the injected glue to solidify naturally, and then wrapped with a water cloth;

[0041] Final vulcanization: After the positive vulcanization is completed, the material stays in the tank to cool down naturally before being taken out of the tank.

[0042] like Figure 2 As shown, in a specific implementation, joints 11 are installed at both ends of the rubber hose by a casting process, and the joints 11 are integrated coreless joints;

[0043] Wherein, at the connection between the rubber hose and the joint 11, the second middle rubber layer 6 does not need to be installed between the reinforcing layer 5 and the joint fastening layer 8, wherein the copper-plated steel wire head of the reinforcing layer 5 and the high-carbon steel wire of the joint fastening layer 8 are firstly tied with a strong adhesive tape to be processed;

[0044] A joint 11 is installed on the steel wire surface of the joint fastening layer 8, and the end and groove of the joint 11 are filled and compacted by the middle rubber strip. The end of the joint 11 is along the tube body of the rubber hose and is aligned with a natural slope according to the wall thickness of the joint 11;

[0045] The steel wire end of the joint 11 and the rubber hose connection end needs to be flanging, and after fixing, glue is injected at the glue injection hole 12, and exhaust is performed in stages until the glue is fully filled;

[0046] The inner and outer surfaces of the joint 11 must be shot blasted and kept clean, then evenly coated with adhesive once each and allowed to dry naturally; a layer of 1.6mm thick middle rubber sheet is attached to the outer surface of the joint 11 and along the entire body of the rubber hose;

[0047] 500mm to 600mm from the end of the joint, wrap the reinforcing mesh cloth, and obliquely wrap the rubbed polyester mesh cloth along the body of the rubber hose, cross-wrap 2 layers, with an overlap of 10mm;

[0048] It also includes steel wire mesh weaving, wherein the diameter of the steel wire is 0.3 mm to 0.4 mm, and one layer is woven at a balance angle (54°44′); the steel wire mesh weaving is woven along the entire body of the rubber hose from both ends of the joint;

[0049] A layer of medium film with a thickness of 0.2mm to 0.4mm is applied along the entire body of the pipe from both ends of the joint;

[0050] Finally, wrap the rubbed polyester mesh obliquely along the entire body of the pipe from both ends of the joint, cross-wrap 2 layers, and overlap by 10mm.

[0051] The above embodiments are only descriptions of the preferred methods of the invention of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit of the utility model, various modifications and improvements made to the technical solution of the utility model by ordinary technicians in this field should fall within the protection scope determined by the claims of the utility model.

Claims

1. A full-diameter ultra-high pressure rubber hose, characterized in that: The invention comprises an inner rubber layer (1), an inner protective layer (2) arranged outside the inner rubber layer (1), a first middle rubber layer (3) arranged outside the inner protective layer (2), an auxiliary reinforcement layer (4) arranged outside the first middle rubber layer (3), a main reinforcement layer (5) arranged outside the auxiliary reinforcement layer (4), a second middle rubber layer (6) arranged outside the main reinforcement layer (5), an outer protective layer (7) arranged on the outer layer of the second middle rubber layer (6), a joint fastening layer (8) arranged outside the outer protective layer (7), a third middle rubber layer (9) arranged on the outer layer of the joint fastening layer (8), and an outer rubber layer (10) arranged on the outer layer of the third middle rubber layer (9).

2. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The material of the inner rubber layer (1) is HNBR synthetic rubber; the material of the first middle rubber layer (3), the second middle rubber layer (6), and the third middle rubber layer (9) are all NBR synthetic rubber.

3. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The inner protective layer (2) and the outer protective layer (7) are both made of rubber mesh.

4. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The auxiliary reinforcement layer (4) is a cord wrapping layer.

5. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The main reinforcement layer (5) is a copper-plated steel wire wound around the outside of the auxiliary reinforcement layer (4).

6. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The joint fastening layer (8) is a spiral steel wire winding structure.

7. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: The outer rubber layer is made of CR synthetic rubber.

8. The full-diameter ultra-high pressure rubber hose according to claim 1, characterized in that: Joints (11) are respectively arranged at the two ends of the rubber hose by a casting process, and the joints (11) are integrated coreless joints; Wherein, at the connection between the rubber hose and the joint (11), the second middle rubber layer (6) does not need to be provided between the reinforcing layer (5) and the joint fastening layer (8), wherein the copper-plated steel wire head of the reinforcing layer (5) and the high-carbon steel wire of the joint fastening layer (8) are firstly tied up with a strong adhesive tape to be processed; A joint (11) is installed on the steel wire surface of the joint fastening layer (8), the end and groove of the joint (11) are filled and compacted by a middle rubber strip, and the end of the joint (11) is along the tube body of the rubber hose and aligned with a natural slope according to the wall thickness of the joint (11).

9. The full-diameter ultra-high pressure rubber hose according to claim 8, characterized in that: The outer wall of the joint (11) is provided with a plurality of evenly spaced reserved glue injection holes (12); and an annular baffle (13) in contact with the end surface of the rubber hose is provided inside the joint (11).

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