A high-pressure oil pipe inner wall oil removal device

Abstract

The utility model discloses a high pressure oil pipe inner wall oil removal device, it includes box, air extraction component, gas supply component, the inside chamber for forming negative pressure environment of box is equipped with, the movable installation of warehouse door is in on the box, the chamber is isolated with the outside world through the warehouse door of box, the top of box is equipped with the vent with chamber intercommunication, the air extraction component is equipped with the negative pressure fan, the negative pressure fan is located the outside of box and is connected with the box through the gas pipe, the gas pipe is connected with the vent, the gas supply component includes air compressor and clamping part, the clamping part is arranged in the chamber in the interval mode. High pressure oil pipe inner wall oil removal device utilizes compressed air to blow the inner wall under the closed negative pressure condition, can blow and remove the hydraulic oil remaining in the bending position and the hydraulic oil in the form of oil film remaining in the pipe wall in very short time, reaches the purpose of high -efficient removal hydraulic oil of high pressure oil pipe inner wall.

Description

Technical Field

[0001] This utility model relates to a high-pressure oil pipe inner wall degreasing device. Background Technology

[0002] During the operation of an internal combustion engine, fuel is input into the combustion chamber under high pressure, requiring high-pressure fuel lines to deliver this fuel. Higher fuel pressure improves combustion efficiency, making increasing fuel delivery pressure a crucial means of enhancing engine performance. This necessitates that high-pressure fuel lines possess sufficient pressure resistance; otherwise, they risk breakage during fuel delivery. During manufacturing, high-pressure fuel lines undergo batch sampling inspection to test their pressure resistance according to order requirements. During inspection, the high-pressure fuel line is connected to a pipeline simulating the delivery of high-pressure fuel, with hydraulic oil flowing inside as a substitute for fuel. This simulation tests the pressure resistance of the high-pressure fuel line. After inspection, the high-pressure fuel line is removed from the pipeline, leaving hydraulic oil adhering to its inner wall. In existing technologies, a static high-pressure fuel line method is used, allowing the hydraulic oil to flow out from the inside of the high-pressure fuel line. This method of removing hydraulic oil by its own weight has drawbacks. First, it is time-consuming; second, it leaves residue. The high-pressure hydraulic hoses used for pressure testing are in a finished product state with multiple bends, where hydraulic oil can remain. Additionally, the rough surface of the high-pressure hose's inner wall can leave an oil film. While the hydraulic oil itself doesn't affect the hose's performance, it can have negative effects if it enters the internal combustion engine during use. Summary of the Invention

[0003] The technical problem to be solved by this invention is how to efficiently remove hydraulic oil from the pipe, thereby obtaining a high-pressure oil pipe inner wall oil removal device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the high-pressure oil pipe inner wall oil removal device includes a housing, an air extraction component, and an air supply component, wherein the housing is equipped with a mechanism for creating a negative pressure environment. The chamber is equipped with a movable door that isolates it from the outside world. An exhaust vent communicating with the chamber is located on the top of the chamber. A negative pressure fan is installed in the exhaust system, located outside the chamber and connected to it via an air supply pipe. The air supply pipe is connected to the exhaust vent. An air supply system includes an air compressor and clamping components. The clamping components are arranged at intervals within the chamber. Each clamping component includes a base, a clamping cylinder, a pushing cylinder, and an air supply interface. A limiting groove is provided on the base. The clamping cylinder and the pushing cylinder are both mounted on the base. The pushing cylinder is located at one end of the limiting groove, and its piston rod extends into the limiting groove and connects to the air supply interface. The extension and retraction direction of the piston rod coincides with the extension direction of the limiting groove. The other end of the limiting groove is an open structure. The clamping cylinder is located at the other end of the limiting groove. The extension and retraction direction of the piston rod of the clamping cylinder is perpendicular to the extension direction of the limiting groove. The air compressor is connected to the air supply interface through an air supply pipe.

[0005] The high-pressure oil pipe internal wall oil removal device provides a closed chamber. Air is extracted from the chamber via an air extraction component, creating a negative pressure environment. Compressed air is then introduced into the high-pressure oil pipe within this negative pressure chamber. An air compressor is used to supply compressed air. This technology not only meets the technical requirements for supplying compressed air but also ensures that the temperature of the supplied compressed air is higher than room temperature. This is due to the compressor's operating principle; higher-temperature compressed air improves the fluidity of residual hydraulic oil, making it easier to remove the hydraulic oil during air purging. The combination of the negative pressure in the chamber and the use of compressed air purging creates a higher pressure state between the compressed air inside the high-pressure oil pipe and the chamber, increasing the purging force. Simultaneously, the air extraction component guides the flow of the mixture of hydraulic oil and air, preventing the hydraulic oil from spilling out and causing environmental pollution. High-pressure air purging can remove hydraulic oil from the pipe in a short time.

[0006] After the clamping component connects to the high-pressure oil pipe, the inside of the high-pressure oil pipe can then connect to the air supply component. The process of removing hydraulic oil requires handling a large number of high-pressure oil pipes. During the manual placement of the high-pressure oil pipes, alignment is necessary to align the ends of the high-pressure oil pipes with the air supply interface. To improve the ease of alignment, this... In the technical solution, an alignment portion is provided on the base, located at the other end of the limiting groove. The alignment portion has a U-shaped alignment groove, which communicates with the limiting groove and extends in the same direction. Once the end of the high-pressure oil pipe is embedded in the alignment groove, it is aligned with the gas delivery interface.

[0007] To further improve the convenience of manual alignment, a guide surface is provided on the centering part, and the extension direction of the guide surface is perpendicular to the extension direction of the limiting groove.

[0008] As a preferred embodiment, the centering portion is provided with a through hole for the piston rod of the clamping cylinder to pass through, and the piston rod of the clamping cylinder is located within the through hole. The width of the centering groove corresponds to the outer diameter of the high-pressure oil pipe. When the high-pressure oil pipe is embedded in the centering groove, it cannot wobble. When the clamping cylinder applies force, it avoids changing the position of the high-pressure oil pipe in the centering groove, thus achieving the most stable clamping effect.

[0009] The compartment door is movably mounted on the housing. Preferably, the compartment door is movably mounted on the housing via a guide rail. A lifting cylinder is also provided between the housing and the compartment door. The guide rail has a sliding groove, and a guide protrusion is provided at the lower end of the sliding groove, facing the location of the chamber. The width of the lower end of the sliding groove gradually decreases from the inside to the outside. During the lifting and lowering movement of the compartment door, it mainly maintains a vertical state, but it will be slightly tilted when it descends to the lowest position. This state is related to the guide protrusion pressing against the bottom of the compartment door towards the location of the chamber; that is, the bottom of the compartment door fits the housing more closely than the top of the compartment door. Overall, this increases the sealing degree between the compartment door and the housing, which helps maintain a stable negative pressure state in the chamber.

[0010] The present invention adopts the above-mentioned technical solution: the high-pressure oil pipe inner wall oil removal device uses compressed air to blow away the inner wall under closed negative pressure conditions, which can blow away the hydraulic oil remaining in the bending part and the hydraulic oil remaining in the pipe wall in the form of oil film in a very short time, thereby achieving the purpose of efficiently removing the hydraulic oil from the inner wall of the high-pressure oil pipe. Attached Figure Description

[0011] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 is a schematic diagram of the use of the high-pressure oil pipe inner wall oil removal device of this utility model. Figure I ; Figure 2 is a schematic diagram of the use of the high-pressure oil pipe inner wall oil removal device of this utility model. Figure II ; Figure 3 is a magnified view of a portion of Figure 2; Figure 4 is a schematic diagram of the guide rail connected to the compartment door in a high-pressure oil pipe inner wall degreasing device of this utility model. Detailed Implementation

[0013] As shown in Figures 1 and 2, the high-pressure oil pipe inner wall oil removal device includes a housing 1, an air extraction component, and an air supply component.

[0014] The housing 1 has a chamber for creating a negative pressure environment. At the bottom of the chamber, the housing 1 has an oil drain port for collecting hydraulic oil dripping during the purging process. A manual valve is installed on the oil drain port. At the top of the chamber, the housing 1 has an exhaust port 3, which is directly connected to the chamber.

[0015] The air extraction component includes a negative pressure fan and an air supply pipe. The negative pressure fan is located outside the housing 1 and connected to the exhaust port 3 of the housing 1 via the air supply pipe. When the negative pressure fan is working, it draws air from the chamber. The air supply component includes an air supply pipe, an air compressor, and a clamping component 4. The air compressor is located outside the housing 1, and the clamping component 4 is installed inside the housing 1; the two are connected by the air supply pipe.

[0016] As shown in Figures 2 and 3, the clamping components 4 are arranged at intervals within the chamber. Each clamping component 4 includes a base 5, a clamping cylinder 10, a push cylinder 11, and an air supply interface 12. The base 5 has a limiting groove 6, which is a bottomless groove structure. The clamping cylinder 10 and the push cylinder 11 are both mounted on the base 5. The push cylinder 11 is located at one end of the limiting groove 6, and the clamping cylinder 10 is located at the other end. The end of the limiting groove 6 where the push cylinder 11 is mounted on the base 5 is closed, with the piston rod of the push cylinder 11 extending into the limiting groove 6. The extension and retraction direction of the piston rod of the push cylinder 11 coincides with the extension direction of the limiting groove 6. The end of the limiting groove 6 where the clamping cylinder 10 is mounted on the base 5 is open, with the extension and retraction direction of the piston rod of the clamping cylinder 10 perpendicular to the extension direction of the limiting groove 6. In the initial state, the piston rods of the push cylinder 11 and the clamping cylinder 10 are both in the retracted state.

[0017] The air supply port 12 is connected to the piston rod of the push cylinder 11, and the air supply port 12 is located in the limiting groove 6; The air inlet 12 has an internal air passage. The air inlet 12 is connected to the air compressor via an air supply pipe. One end of the air passage is connected to the air supply pipe, and the other end of the air inlet 12 forms an interface structure to accommodate the end of a high-pressure oil pipe. The piston rod of the push cylinder 11 extends and retracts, causing the air inlet 12 to move within the limiting groove 6. A solenoid valve, activated in manual mode, is installed on the air supply pipe located between the air compressor and the air inlet 12. The solenoid valve is located outside the housing 1 to control the air supply process.

[0018] The base 5 has a centering portion 7 located at the other end of the limiting groove 6. The centering portion 7 has a U-shaped centering groove 8, which communicates with the limiting groove 6 and extends in the same direction. The centering portion 7 has guide surfaces 9 distributed on both sides of the centering groove 8, with the extending direction of the guide surfaces 9 perpendicular to the extending direction of the limiting groove 6. The centering portion 7 has a through hole for the piston rod of the clamping cylinder 10 to pass through, with the piston rod of the clamping cylinder 10 located within the through hole. When the piston rod of the clamping cylinder 10 extends or retracts, it enters or disengages from the centering groove 8.

[0019] The chamber is isolated from the outside world by a door 2 and a corresponding opening structure on the housing 1. The door 2 covers this opening structure, thus isolating the chamber from the outside world when the door 2 is closed to the housing 1, and opening the chamber to the outside world when the door 2 is closed. The door 2 is movably mounted on the housing 1 via guide rails distributed on both sides of the door 2. The guide rails have sliding grooves 13, and rollers are located on both sides of the door 2, embedded in the sliding grooves 13. A lifting cylinder is also provided between the housing 1 and the door 2. The cylinder body of the lifting cylinder is connected to the housing 1, and the piston rod of the lifting cylinder is connected to the door 2. The extension and retraction of the lifting cylinder drives the door 2 to move up and down. As shown in Figure 4, the guide rail has a guide protrusion 14 at the lower end of the slide groove 13. The guide protrusion 14 protrudes towards the inside of the slide groove 13 and faces the location of the chamber, so that the width of the lower end of the slide groove 13 gradually decreases from the inside to the outside. In the initial state, the door 2 is raised and detached from the box body 1, and the chamber is completely open to the outside.

[0020] Before use, start the negative pressure fan and air compressor. Next, place the high-pressure oil pipe to be processed into the chamber, with the end of the high-pressure oil pipe embedded in the alignment groove 8 and the end of the high-pressure oil pipe extending into the limiting position. Inside slot 6, the piston rod of clamping cylinder 10 extends, at which point the end of the high-pressure oil pipe automatically aligns with the air supply interface 12. When the piston rod of push cylinder 11 extends, the end of the high-pressure oil pipe inserts into the air supply interface 12. Then, the chamber door 2 descends until it covers the opening structure of the housing 1, isolating the chamber from the outside. High-pressure air is introduced into the high-pressure oil pipe, and the purging operation stops after a period of continuous purging. The chamber door 2 rises, push cylinder 11 returns to its initial state, clamping cylinder 10 returns to its initial state, and the high-pressure oil pipe can then be removed.

Claims

1. A high-pressure oil pipe inner wall oil removal device, characterized in that: The high-pressure oil pipe inner wall oil removal device includes a housing (1), an air extraction component, and an air supply component. The housing (1) has a chamber for creating a negative pressure environment. A door (2) is movably installed on the housing (1). The chamber is isolated from the outside of the housing (1) through the door (2). The top of the housing (1) has an exhaust port (3) communicating with the chamber. The air extraction component is equipped with a negative pressure fan. The negative pressure fan is located outside the housing (1) and connected to the housing (1) through an air supply pipe. The air supply pipe is connected to the exhaust port (3). The air supply component includes an air compressor and a clamping component (4). The clamping components (4) are arranged at intervals in the chamber. The clamping component (4) includes a base (5), a clamping cylinder (10), a push cylinder (11), and an air supply interface (12). The base (5) is provided with a limiting groove (6). The clamping cylinder (10) and the push cylinder (11) are both installed on the base (5). The push cylinder (11) is located at one end of the limiting groove (6). The piston rod of the push cylinder (11) extends into the limiting groove (6) and is connected to the air supply interface (12). The extension and retraction direction of the piston rod of the push cylinder (11) coincides with the extension direction of the limiting groove (6). The other end of the limiting groove (6) is an open structure. The clamping cylinder (10) is located at the other end of the limiting groove (6). The extension and retraction direction of the piston rod of the clamping cylinder (10) is perpendicular to the extension direction of the limiting groove (6). The air compressor is connected to the air supply interface (12) through an air supply pipe.

2. The high-pressure oil pipe inner wall oil removal device according to claim 1, characterized in that: The base (5) is provided with a centering part (7), which is located at the other end of the limiting groove (6). The centering part (7) is provided with a U-shaped centering groove (8), which is connected to the limiting groove (6) and extends in the same direction.

3. The high-pressure oil pipe inner wall oil removal device according to claim 2, characterized in that: The centering part (7) is provided with a guide surface (9), and the extension direction of the guide surface (9) is perpendicular to the extension direction of the limiting groove (6).

4. The high-pressure oil pipe inner wall oil removal device according to claim 2, characterized in that: The centering part (7) is provided with a through hole for the piston rod of the clamping cylinder (10) to pass through, and the piston rod of the clamping cylinder (10) is located in the through hole.

5. The high-pressure oil pipe inner wall oil removal device according to claim 1, characterized in that: The door (2) is movably mounted on the box (1) via a guide rail. A lifting cylinder is also provided between the box (1) and the door (2). A slide groove (13) is provided on the guide rail. A guide protrusion (14) is provided at the lower end of the slide groove (13). The guide protrusion (14) faces the location of the chamber. The width of the lower end of the slide groove (13) gradually decreases from the inside to the outside.

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