A high performance alloy high pressure oil pipe

Abstract

The present invention relates to the technical field of high-pressure oil pipes, specifically to a high-performance alloy high-pressure oil pipe, including a double-layer oil pipe and two joints, the double-layer oil pipe includes an inner oil pipe and an outer casing, the inner oil pipe is made of CrMo alloy structural steel material, both ends of the inner oil pipe are provided with swaging heads, the swaging heads are arranged in the joints, the outer casing is sleeved on the inner oil pipe, and the two ends of the outer casing are respectively sleeved on the two joints. After the energy-absorbing ball is subjected to force, a "cross"-shaped groove is opened, so that the energy-absorbing block is damaged and thus absorbs energy, avoiding the problem of the inner oil pipe being ruptured when the high-pressure oil pipe is impacted by external foreign objects. Through multi-stage buffering and energy absorption, the safety performance of the high-pressure oil pipe is greatly improved, and the problem of high-pressure oil leakage caused by oil pipe rupture is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure oil pipes, in particular to a high-performance alloy high-pressure oil pipe. Background Art

[0002] The high-pressure oil pipe is composed of a pipe body, a clamping ring and a nut. It is an important part of the high-pressure volume of the diesel engine and the injection system. The pressure of the high-pressure oil pipe fluctuates periodically during operation. The high-pressure oil pipes currently used are generally single-layered. When hit by external foreign objects, the high-pressure oil pipe is easily damaged, and the high-pressure oil will be directly sprayed out, polluting the surrounding environment. It is also prone to fire and has low safety performance. Summary of the invention

[0003] The purpose of the present invention is to provide a high-performance alloy high-pressure oil pipe to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A high-performance alloy high-pressure oil pipe described in the present invention includes a double-layer oil pipe and two joints. The double-layer oil pipe includes an inner oil pipe and an outer casing. The inner oil pipe is made of CrMo alloy structural steel material. Both ends of the inner oil pipe are provided with swaging heads, which are arranged in the joints. The outer casing is sleeved on the inner oil pipe, and both ends of the outer casing are respectively sleeved on two joints. The outer casing is a high-pressure steel wire braided rubber hose. The outer casing is clamped on the joint by a clamp sleeved on the outer casing. A filling space is preset between the outer casing and the inner oil pipe; the filling space is filled with non-Newtonian fluid, and the outer casing is provided with an inlet valve and a drain valve for filling and discharging non-Newtonian fluid. A plurality of conical energy-absorbing blocks are fixedly connected to the outer wall of the inner oil pipe, and the energy-absorbing blocks are used to absorb the energy generated by external impact.

[0006] Furthermore, the energy absorbing block is an aluminum block, and a cross-shaped groove is provided on the energy absorbing block.

[0007] Furthermore, a hemispherical groove is provided on the top of the energy absorbing block, the hemispherical groove is provided at the intersection of the "cross"-shaped groove, and an energy absorbing ball is installed on the hemispherical groove.

[0008] Furthermore, the energy absorbing ball is made of metallic iron material.

[0009] Furthermore, the inner wall of the outer sleeve is coated with ceramic thermal insulation coating.

[0010] Compared with the prior art, the beneficial effect of the present invention is as follows: when the high-performance alloy high-pressure oil pipe described in the present invention is subjected to external impact, first the external foreign matter quickly hits the outer casing, first the outer casing is a high-pressure steel wire braided hose, which has certain elasticity and high strength and is not easy to be damaged. After being impacted, the outer casing will sink inward. At this time, the non-Newtonian fluid quickly slows down the speed of the sinking through its own characteristics and absorbs a large amount of impact force. When the impact force is too large, the energy-absorbing ball opens a "cross" shaped groove after being subjected to force, so that the energy-absorbing block is damaged and absorbs energy, thereby avoiding the problem of the inner layer of the oil pipe being ruptured when the high-pressure oil pipe is impacted by external foreign matter. Through multi-level buffering energy absorption, the safety performance of the high-pressure oil pipe is greatly improved, and the problem of oil pipe rupture and high-pressure oil leakage is effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0013] Figure 3 It is a schematic diagram of the three-dimensional structure of the energy absorbing block described in the present invention.

[0014] In the figure: a joint 1, an inner oil pipe 2, an outer casing 3, a filling space 4, a liquid inlet valve 5, a liquid outlet valve 6, an energy absorbing block 7, and an energy absorbing ball 8. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-3 , the present invention provides a technical solution:

[0017] A high-performance alloy high-pressure oil pipe described in the present invention comprises a double-layer oil pipe and two joints 1, wherein the double-layer oil pipe comprises an inner layer oil pipe 2 and an outer layer casing 3, wherein the inner layer oil pipe 2 is made of 30CrMo alloy structural steel material, and both ends of the inner layer oil pipe 2 are provided with upsetting heads, which are arranged in the joint 1, and the outer layer casing 3 is sleeved on the inner layer oil pipe 2, and both ends of the outer layer casing 3 are respectively sleeved on the two joints 1, and the outer layer casing 3 is a high-pressure steel wire braided rubber hose, and the outer layer casing 3 is clamped on the joint 1 by a clamp sleeved on the outer layer casing 3, and a filling space 4 is preset between the outer layer casing 3 and the inner layer oil pipe 2; the filling space 4 is filled with a non-Newtonian fluid, and the outer layer casing 3 is provided with a liquid inlet valve 5 and a liquid outlet valve 6 for filling and discharging the non-Newtonian fluid, and a plurality of conical energy absorbing blocks 7 are fixedly connected to the outer wall of the inner layer oil pipe 2, and the energy absorbing blocks 7 are used to absorb the energy generated by external impact.

[0018] As an implementation mode of the present invention, the energy absorbing block 7 is an aluminum block, and a cross-shaped groove is provided on the energy absorbing block 7 .

[0019] As an embodiment of the present invention, a hemispherical groove is provided on the top of the energy absorbing block 7, the hemispherical groove is provided at the intersection of the "cross"-shaped groove, and an energy absorbing ball 8 is installed on the hemispherical groove.

[0020] As an implementation mode of the present invention, the energy absorbing ball 8 is made of metallic iron material.

[0021] As an embodiment of the present invention, the inner wall of the outer sleeve 3 is coated with a ceramic thermal insulation coating.

[0022] Working principle: During normal operation, high-pressure oil enters the inner oil pipe 2 from the oil inlet end joint 1 and flows out from the oil return end joint 1. When subjected to external impact, the external foreign matter first quickly hits the outer casing. First, the outer casing is a high-pressure steel wire braided hose, which has a certain elasticity and high strength and is not easy to be damaged. After being impacted, the outer casing will sink inward. At this time, the non-Newtonian fluid quickly slows down the speed of the sinking through its own characteristics and absorbs a large amount of impact force. When the impact force is too large, and it is still sinking after being absorbed by the non-Newtonian fluid, it will first impact the energy-absorbing ball 8. After being subjected to force, the energy-absorbing ball 8 opens a "cross" shaped groove, causing the energy-absorbing block 7 to break and absorb energy, thereby avoiding the problem of the inner oil pipe 2 being ruptured when the high-pressure oil pipe is impacted by external foreign matter, and has high safety performance.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-performance alloy high-pressure oil pipe, comprising a double-layer oil pipe and two joints (1), Features: The double-layer oil pipe comprises an inner oil pipe (2) and an outer casing (3). The inner oil pipe (2) is made of 30CrMo alloy structural steel. Both ends of the inner oil pipe (2) are provided with upsetting heads, which are arranged in the joint (1). The outer casing (3) is sleeved on the inner oil pipe (2). Both ends of the outer casing (3) are sleeved on two joints (1) respectively. The outer casing (3) is a high-pressure steel wire braided rubber hose. The outer casing (3) is sleeved on the outer casing. The clamp on the tube (3) is clamped on the joint (1), and a filling space (4) is preset between the outer layer casing (3) and the inner layer oil pipe (2); the filling space (4) is filled with a non-Newtonian fluid, and the outer layer casing (3) is provided with a liquid inlet valve (5) and a liquid outlet valve (6) for filling and discharging the non-Newtonian fluid. A plurality of conical energy absorbing blocks (7) are fixedly connected to the outer wall of the inner layer oil pipe (2), and the energy absorbing blocks (7) are used to absorb the energy generated by external impact; The energy absorbing block (7) is an aluminum block, a "cross"-shaped groove is provided on the energy absorbing block (7), a hemispherical groove is provided above the energy absorbing block (7), the hemispherical groove is provided at the intersection of the "cross"-shaped groove, and an energy absorbing ball (8) is installed on the half groove; The energy absorbing ball (8) is made of metallic iron material; The inner wall of the outer sleeve (3) is coated with ceramic heat-insulating coating.

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