CN110296028A - A kind of composite structured high-pressure oil pipe - Google Patents

Abstract

The present invention relates to high-pressure oil pipe technical fields, specially a kind of composite structured high-pressure oil pipe, including double layer oil pipe and two connectors, the double layer oil pipe includes internal layer oil pipe and outer layer sleeve, the both ends of the internal layer oil pipe are equipped with heading, heading is arranged in connector, the outer layer sleeve is socketed on internal layer oil pipe, the both ends of outer layer sleeve are socketed in respectively on two connectors, outer layer sleeve is high pressure wire braided hose, outer layer sleeve is clamped on connector by the clip being socketed on outer layer sleeve, and filling space is preset between outer layer sleeve and internal layer oil pipe.By the way that filling space is arranged between internal layer oil pipe and outer layer sleeve, the material of different performance is filled into filling space, can obtain the high-pressure oil pipe suitable for varying environment.

Description

A compound structure high-pressure oil pipe

technical field

The invention relates to the technical field of high-pressure oil pipes, in particular to a high-pressure oil pipe with a composite structure.

Background technique

The high-pressure oil pipe is an integral part of the high-pressure oil circuit. It is required that the oil pipe must withstand a certain oil pressure and have a certain fatigue strength to ensure the sealing requirements of the pipeline. The high-pressure oil pipe for vehicles mainly appears in high-pressure injection diesel engines and high-pressure injection direct injection. In a gasoline engine, it can withstand the oil pressure required for the engine to run.

The existing high-pressure fuel pipe is composed of a pipe body and two joints. It is an important part of the high-pressure volume of the diesel engine and fuel injection system. The pressure of the high-pressure fuel pipe fluctuates periodically during operation, which causes mechanical vibration of the high-pressure fuel pipe during use. Long-term fatigue work will easily lead to loose joints and oil leakage. At the same time, the existing high-pressure oil pipe has a simple structure, and it is difficult to improve the high-pressure oil pipe so that it is suitable for use in different environments.

Contents of the invention

The purpose of the present invention is to provide a high-pressure oil pipe with a composite structure to solve the problems raised in the above-mentioned background technology.

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

A high-pressure oil pipe with a composite structure according to the present invention includes a double-layer oil pipe and two joints. The double-layer oil pipe includes an inner layer oil pipe and an outer layer casing. Both ends of the inner layer oil pipe are provided with heading heads. The header is set in the joint, the outer casing is sleeved on the inner oil pipe, the two ends of the outer casing are respectively sleeved on the two joints, the outer casing is a high-pressure steel wire braided rubber hose, and the outer casing The pipe is clamped on the joint through the clamp sleeved on the outer casing, and a filling space is preset between the outer casing and the inner oil pipe; the filling space is filled with fillers, and the outer casing is There are two through holes, and the filling valve and the discharge valve are respectively fixedly installed on the two through holes. When working, the discharge valve is connected to the oil return tank of the diesel engine through a hose and a filter. When oil leakage occurs, the leakage The oil flows back into the oil return tank of the diesel engine through the discharge valve, and the leaked oil is collected. The outer casing is provided with a pressure alarm. When the pressure increases, the pressure alarm is triggered to send an alarm, prompting personnel to leak oil from the high-pressure oil pipe.

Preferably, spiral threads are provided on the outer wall of the inner oil pipe, and the filler is composed of several spherical particles, and the filler can roll between the spiral threads provided on the outer wall of the inner oil pipe.

Preferably, the filling consists of several quantities of spherical calcium carbonate products.

Preferably, the filling is composed of several quantities of spherical iron sand.

Preferably, the filler is cooling oil.

Preferably, the inner oil pipe is a rigid oil pipe, and the material of the inner oil pipe is 30CrMo.

Compared with the prior art, the beneficial effect of the present invention is: a composite structure high-pressure oil pipe according to the present invention, by setting a filling space between the inner oil pipe and the outer casing, filling the filling space with different properties materials, high-pressure oil pipes suitable for different environments can be obtained.

1. By adopting calcium carbonate products with high compressive strength, small thermal conductivity, and convenient production and processing, it can effectively realize the heat insulation effect, and then realize the heat insulation effect of the inner oil pipe, which is suitable for use in low temperature environments.

2. By using spherical iron sand as filler, part of the energy generated by the vibration can be absorbed by the spherical iron sand and transformed into the friction between the spherical iron sand to do work, thereby reducing the vibration amplitude and avoiding loose joints and oil leakage caused by mechanical vibration. In case of leakage, by setting fillers such as spherical calcium carbonate or spherical iron sand between the outer casing and the inner oil pipe, the flow area of the leaked oil between the outer casing and the inner oil pipe will be reduced, which has the advantages of A certain blocking effect can reduce the leakage rate of high-pressure oil.

3. By using the cooling oil as the filling material, the cooling oil is continuously filled into the filling space through the filling valve, so that the cooling oil absorbs the temperature of the inner oil pipe and is discharged through the discharge valve, thereby reducing the temperature of the inner oil pipe. It is suitable for Use in high temperature environment.

4. 30CrMo is used to strengthen the overall strength of the main body of the inner oil pipe, so that the oil pipe is not easy to break.

Description of drawings

Fig. 1 is a structural representation of the present invention;

FIG. 2 is a partial enlarged view of A in FIG. 1 .

In the figure: joint 1, inner oil pipe 2, spiral thread 21, outer casing 3, clamp 4, filling space 5, filler 6, filling valve 7, discharge valve 8, pressure alarm 9.

specific embodiment

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

Please refer to Fig. 1, a kind of composite structure high-pressure oil pipe of the present invention, comprises double-layer oil pipe and two joints 1, double-layer oil pipe comprises inner layer oil pipe 2 and outer layer casing 3, and the two ends of inner layer oil pipe 2 are provided with Upsetting head, the heading head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high pressure Steel wire braided rubber hose, the outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and the filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 The inside is filled with filler 6, and two through holes are opened on the outer casing 3, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes, and the discharge valve 8 is connected to the filter through a hose during operation. In the oil return tank of the diesel engine, when oil leakage occurs, the leaked oil flows back into the oil return tank of the diesel engine through the discharge valve 8; the outer casing 3 is provided with a pressure alarm 9, and the leaked oil enters the outer casing when oil leakage occurs. Inside the layer pipe sleeve 3, the pressure in the outer layer pipe sleeve 3 increases, triggering the pressure alarm 9 to send an alarm, prompting personnel to leak oil from the high-pressure oil pipe, and the outer wall of the inner layer oil pipe 2 is provided with a spiral pattern 21, and the filler 6 It is composed of several spherical particles, and the filler 6 can roll between the spiral threads 21 provided on the outer wall of the inner oil pipe 2. The filler 6 is composed of a number of spherical calcium carbonate products, and the spherical calcium carbonate products can be filled through the filling valve 7. and roll along the helical pattern 21 provided on the outer wall of the inner oil pipe 2 until it fills the filling space 5. Calcium carbonate products have high compressive strength, low thermal conductivity, convenient production and processing, and can effectively achieve heat insulation effect. Further, the heat preservation effect on the inner oil pipe 2 is realized, which is suitable for use in a low temperature environment.

Example 2

Please refer to Fig. 1, a kind of composite structure high-pressure oil pipe of the present invention, comprises double-layer oil pipe and two joints 1, double-layer oil pipe comprises inner layer oil pipe 2 and outer layer casing 3, and the two ends of inner layer oil pipe 2 are provided with Upsetting head, the heading head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high pressure Steel wire braided rubber hose, the outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and the filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 The inside is filled with filler 6, and two through holes are opened on the outer casing 3, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes, and the discharge valve 8 is connected to the filter through a hose during operation. In the oil return tank of the diesel engine, when oil leakage occurs, the leaked oil flows back into the oil return tank of the diesel engine through the discharge valve 8; the outer casing 3 is provided with a pressure alarm 9, and the leaked oil enters the outer casing when oil leakage occurs. The pressure in the layer casing 3 and the outer layer casing 3 increases, triggering the pressure alarm 9 to send an alarm, prompting personnel to leak oil from the high-pressure oil pipe, and the filler 6 is composed of a certain number of spherical iron sand; through the filling valve 7 to The filling space 5 is filled with spherical iron sand, and the pressure of the high-pressure oil pipe fluctuates periodically during operation, causing the high-pressure oil pipe to vibrate. At this time, part of the energy generated by the vibration will be absorbed by the spherical iron sand and converted into friction between the spherical iron sand to do work. Thereby reducing the vibration amplitude, avoiding the situation of joint 1 loosening and oil leakage caused by mechanical vibration.

Example 3

Please refer to Fig. 1, a kind of composite structure high-pressure oil pipe of the present invention, comprises double-layer oil pipe and two joints 1, double-layer oil pipe comprises inner layer oil pipe 2 and outer layer casing 3, and the two ends of inner layer oil pipe 2 are provided with Upsetting head, the heading head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high pressure Steel wire braided rubber hose, the outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and the filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 The inside is filled with a filler 6, and the outer sleeve 3 is provided with two through holes, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes respectively. The filler 6 is cooling oil, and the filling valve 7 Continuously fill the filling space 5 with cooling oil, so that the cooling oil absorbs the temperature of the inner oil pipe 2 and discharges it through the discharge valve 8, thereby reducing the temperature of the inner oil pipe 2, which is suitable for use in high temperature environments, and the outer casing 3 is provided with a pressure alarm 9. When oil leakage occurs, the leaked oil enters the cooling oil, and the pressure in the outer casing 3 increases, triggering the pressure alarm 9 to send an alarm, prompting personnel to leak oil from the high-pressure oil pipe.

Example 4

Please refer to Fig. 1, a kind of composite structure high-pressure oil pipe of the present invention, comprises double-layer oil pipe and two joints 1, double-layer oil pipe comprises inner layer oil pipe 2 and outer layer casing 3, and the two ends of inner layer oil pipe 2 are provided with Upsetting head, the heading head is set in the joint 1, the outer casing 3 is sleeved on the inner oil pipe 2, the two ends of the outer casing 3 are respectively sleeved on the two joints 1, and the outer casing 3 is a high pressure Steel wire braided rubber hose, the outer casing 3 is clamped on the joint 1 through the clamp 4 sleeved on the outer casing 3, and the filling space 5 is preset between the outer casing 3 and the inner oil pipe 2; the filling space 5 The inside is filled with filler 6, and two through holes are opened on the outer casing 3, and the filling valve 7 and the discharge valve 8 are fixedly installed on the two through holes, and the discharge valve 8 is connected to the filter through a hose during operation. In the oil return tank of the diesel engine, when oil leakage occurs, the leaked oil flows back into the oil return tank of the diesel engine through the discharge valve 8; the outer casing 3 is provided with a pressure alarm 9, and the leaked oil enters the cooling tank when there is an oil leakage. In the oil, the pressure in the outer casing 3 increases, triggering the pressure alarm 9 to send an alarm, prompting personnel to leak oil from the high-pressure oil pipe, the inner oil pipe 2 is a rigid oil pipe, and the material of the inner oil pipe 2 is 30CrMo, reinforced with 30CrMo The overall strength of the main body of the inner layer oil pipe 2 is improved, so that the oil pipe is not easily broken.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. a kind of composite structured high-pressure oil pipe, including double layer oil pipe and two connectors (1), it is characterised in that: the double-deck oil Pipe includes internal layer oil pipe (2) and outer layer sleeve (3), and the both ends of the internal layer oil pipe (2) are equipped with heading, and heading is arranged in connector (1) in, the outer layer sleeve (3) is socketed on internal layer oil pipe (2), and the both ends of outer layer sleeve (3) are socketed in two connectors respectively (1) on, outer layer sleeve (3) is high pressure wire braided hose, and outer layer sleeve (3) passes through the clip that is socketed on outer layer sleeve (3) (4) it is clamped on connector (1), filling space (5) is preset between outer layer sleeve (3) and internal layer oil pipe (2)；The filling space (5) filler (6) are filled in, are opened up on the outer layer sleeve (3) there are two through-hole, fixed peace respectively on two through-holes Pressure alarm (9) are provided with equipped with being filled on valve (7) and dump valve (8) outer layer sleeve (3).

2. a kind of composite structured high-pressure oil pipe according to claim 1, it is characterised in that: the internal layer oil pipe (2) Outer wall is equipped with spiral lamination (21), and the filler (6) is several spheric granules composition, and filler (6) can be in internal layer oil pipe (2) it is rolled between spiral lamination set by outer wall (21).

3. a kind of composite structured high-pressure oil pipe according to claim 2, it is characterised in that: the filler (6) if by The spherical calcium carbonate product composition of dry quantity.

4. a kind of composite structured high-pressure oil pipe according to claim 2, it is characterised in that: the filler (6) if by The spherical iron sand composition of dry quantity.

5. a kind of composite structured high-pressure oil pipe according to claim 1, it is characterised in that: the filler (6) is cold Oily.

6. a kind of composite structured high-pressure oil pipe according to claim 1, it is characterised in that: the internal layer oil pipe (2) is Rigid oil pipe, the material of internal layer oil pipe (2) are 30CrMo.