High-pressure oil pipe explosion-proof joint

Abstract

The utility model relates to the technical field of joint, and disclose a kind of high-pressure oil pipe explosion-proof joint, the both ends of main body module are fixedly installed with the interface for connection, the inside of interface is hollow, the inside of interface is installed at one end of outer tube, and the three-stage pressure protection system of spring elastic buffer, leakage hole grading pressure relief, pressure relief pipe active discharge is formed, can effectively respond to pressure mutation in oil circuit, when pressure abnormally rises, multistage protection structure plays a role in turn, gradually releases pressure, avoids the rupture of joint, explosion due to instantaneous high pressure, greatly reduces the security risk of high-pressure hydraulic system, dynamic buffer structure of spring and conical top block, can respond to pressure fluctuation in real time, when pressure suddenly rises, spring absorbs pressure impact energy, slows down the impact of pressure sudden increase on oil pipe and joint, reduces the structural fatigue damage caused by frequent pressure fluctuation, effectively prolongs the service life of high-pressure oil pipe, joint and entire hydraulic system.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically a high-pressure oil pipe explosion-proof connector. Background Technology

[0002] In fields such as engineering machinery and petrochemicals, high-pressure oil pipes are key components of hydraulic systems, playing a vital role in transmitting high-pressure oil. However, due to factors such as system startup, shutdown, or sudden load changes, the pressure in the oil circuit often rises instantaneously, which can easily lead to the rupture or even explosion of the oil pipe joints, causing equipment damage, environmental pollution, and safety accidents. Therefore, the development of high-pressure oil pipe joints with high-efficiency explosion-proof performance has become an urgent problem to be solved in the industry. For example, a Chinese patent proposes a high-pressure oil pipe explosion-proof connector, patent publication number CN220828559U. When in use, this patent releases the internal pressure of the high-pressure oil pipe by setting a pressure relief valve, which reduces the risk of oil pipe rupture to a certain extent. However, the patent only solves the problem of single pressure release and does not build a multi-level protection system. When the pressure change exceeds the pressure relief valve's tolerance range, it cannot effectively buffer and control the pressure. At the same time, this patent lacks a dynamic buffer structure, making it difficult to respond to pressure fluctuations in real time. Frequent pressure shocks can still cause fatigue damage to the oil pipe structure and shorten the service life of the equipment. In addition, its pressure relief method is relatively simple and crude, which can easily cause a sudden drop in pressure and affect the stable operation of the system.

[0003] To address the aforementioned issues, we propose a high-pressure oil pipe explosion-proof connector. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a high-pressure oil pipe explosion-proof joint, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a high-pressure oil pipe explosion-proof connector, comprising a main module, with interfaces for connection fixedly installed at both ends of the main module, the interfaces being hollow inside, and one end of an outer pipe installed inside the interface, and further comprising: The pressure relief component, installed inside the main module, is a structure used to relieve pressure in the oil circuits inside the main module.

[0006] Preferably, a flange for connection is fixedly installed on the surface of the outer pipe, and a plurality of fixing bolts for fixing are evenly installed on the surface of the flange, with the other end of the fixing bolts connected to the interface.

[0007] Preferably, the pressure-relieving component includes an inner tube, a spring, and a conical top block. The main module has an inner tube for pressure relief inside. A spring for buffering is fixedly installed on the inner wall of one end of the inner tube, and the other end of the spring is fixedly connected to the conical top block.

[0008] Preferably, one end of the inner tube is fixedly connected to the interface, and the other end of the inner tube is closed.

[0009] Preferably, the surface of the inner tube is uniformly provided with a plurality of leakage holes, which are arranged at an angle from the inside to the outside.

[0010] Preferably, a pressure relief pipe for relieving pressure is fixedly installed on the outer end surface of the inner tube, and the other end of the pressure relief pipe extends to the outside of the main module.

[0011] Compared with the prior art, this utility model provides a high-pressure oil pipe explosion-proof joint, which has the following beneficial effects: 1. This high-pressure oil pipe explosion-proof joint features a three-stage pressure protection system consisting of spring elastic buffering, graded pressure relief through leakage holes, and active pressure relief pipe. This system can effectively cope with sudden pressure changes in the oil circuit. When the pressure rises abnormally, the multi-stage protection structure takes effect sequentially, gradually releasing the pressure and preventing the joint from rupturing or exploding due to instantaneous high pressure. This greatly reduces the safety risks of the high-pressure hydraulic system. The dynamic buffer structure composed of springs and conical top blocks can respond to pressure fluctuations in real time. When the pressure suddenly rises, the spring absorbs the pressure impact energy, reducing the impact of the sudden pressure increase on the oil pipe and joint, reducing structural fatigue damage caused by frequent pressure fluctuations, effectively extending the service life of the high-pressure oil pipe, joint, and the entire hydraulic system, and reducing equipment maintenance and replacement costs.

[0012] 2. This high-pressure oil pipe explosion-proof joint features a graded pressure relief design with an inclined leakage hole. When the oil pressure exceeds the initial buffering capacity of the spring, it achieves the first pressure relief. The inclined angle slows down the oil leakage rate, avoiding the impact of sudden pressure drops on the system and making the system pressure change more stable. Combined with the secondary active pressure relief of the pressure relief pipe, the internal pressure can be accurately controlled within a safe range, maintaining stable system operation and reducing equipment failures caused by unstable pressure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the main module of this utility model; Figure 3 This is a schematic diagram of the pressure relief component of this utility model.

[0014] In the diagram: 1. Main module; 2. Interface; 3. Flange; 4. Fixing bolt; 5. External pipe; 6. Inner pipe; 7. Leakage hole; 8. Conical top block; 9. Spring; 10. Pressure relief pipe. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3 A high-pressure oil pipe explosion-proof connector includes a main module 1, with interfaces 2 fixedly installed at both ends of the main module 1 for connection. The interior of the interfaces 2 is hollow, and one end of the external pipe 5 is installed inside the interfaces 2. It also includes a pressure relief component, which is installed inside the main module 1 and is a structure for relieving pressure on the oil circuit inside the main module 1. The two ends of the main module 1 are connected to the external oil pipe through the fixedly installed interfaces 2. The interior of the interfaces 2 is hollow, forming an oil circuit channel. When high-pressure oil flows into the interfaces 2 from the external oil pipe, it enters the interior of the main module 1 through the external pipe 5 and is transmitted through the inner pipe body 6 and its internal structure.

[0017] Furthermore, a flange 3 for connection is fixedly installed on the surface of the outer pipe 5. Multiple fixing bolts 4 for fixing are evenly installed on the surface of the flange 3. The other end of the fixing bolt 4 is connected to the interface 2. One end of the outer pipe 5 is inserted into the interface 2 and fixedly connected to the interface 2 through the flange 3 and the fixing bolts 4, ensuring the sealing and stability of the oil pipe connection.

[0018] Furthermore, the pressure relief component includes an inner tube 6, a spring 9, and a conical top block 8. The main module 1 has an inner tube 6 for pressure relief inside. A spring 9 for buffering is fixedly installed on the inner wall of one end of the inner tube 6. The other end of the spring 9 is fixedly connected to the conical top block 8. The explosion-proof function is achieved through multi-stage buffering and pressure relief. One end of the inner tube 6 is closed, and the other end is fixedly connected to the interface 2. The spring 9 is installed on the inner wall of the closed end of the inner tube 6, and the other end is fixedly connected to the conical top block 8. When the pressure in the oil circuit suddenly increases, the high-pressure oil pushes the conical top block 8 to move towards the closed end, compressing the spring 9. The elastic deformation of the spring 9 absorbs the pressure impact energy, reduces the impact of the sudden pressure increase on the oil pipe, and avoids the joint from breaking due to instantaneous high pressure.

[0019] Furthermore, one end of the inner tube 6 is fixedly connected to the interface 2, and the other end of the inner tube 6 is closed. The oil passage enters from one end of the inner tube 6, and a pressure relief pipe 10 is installed at the other end of the inner tube 6.

[0020] Furthermore, multiple leakage holes 7 are evenly arranged on the surface of the inner tube 6. The multiple leakage holes 7 are arranged in an inclined manner from the inside to the outside. When the oil pressure exceeds the initial buffering capacity of the spring 9, some oil leaks from the inner tube 6 to the interlayer space of the main module 1 through the inclined leakage holes 7, thus achieving the first pressure relief.

[0021] Furthermore, a pressure relief pipe 10 for pressure relief is fixedly installed on the outer end surface of the inner tube 6. The other end of the pressure relief pipe 10 extends to the outside of the main module 1. The pressure relief pipe 10 is fixedly installed on the outside of the inner tube 6, with one end connected to the inside of the inner tube 6 and the other end extending to the outside of the main module 1. When the pressure further increases and exceeds the buffer limit of the leakage hole 7 and the spring 9, the high-pressure oil is directly discharged to the external safe area through the pressure relief pipe 10, realizing the second active pressure relief.

[0022] Structural Description: 1. Main Module: The main module is the core load-bearing structure of the high-pressure oil pipe explosion-proof joint, providing a stable frame support for the entire joint. Its interior is hollow to accommodate the pressure relief components and oil transmission channels. Both ends are fixedly connected to the interface to form a complete oil transmission system. The material of the main module has high strength and impact resistance, which can withstand the pressure of high-pressure oil and provide reliable protection for the internal pressure relief components. 2. Interface: The interface is fixedly installed at both ends of the main module and is a key component for connecting external oil pipes. Its interior is hollow and connected to the oil passage of the main module to form a continuous oil transmission path. The inner wall of the interface is specially treated to enhance the sealing performance with the external pipe and prevent oil leakage. By cooperating with the external pipe, the interface realizes a quick and stable connection between the high-pressure oil pipe and the explosion-proof joint, ensuring smooth and safe oil transmission. 3. Flange: A flange is a connection structure installed on the surface of an external pipe. It is mainly used to enhance the stability and sealing of the connection between the external pipe and the interface. The surface of the flange is provided with multiple fixing holes, which are used in conjunction with fixing bolts to tightly fix the external pipe to the interface. The flange material has good pressure resistance and wear resistance, and can maintain a stable connection under high pressure environment, effectively preventing the connection from loosening due to vibration or pressure fluctuation. 4. Fixing bolts: Fixing bolts are fasteners used to secure the flange to the interface. One end of the bolt passes through the fixing hole on the flange and engages with the corresponding threaded hole on the interface. By tightening the fixing bolts, the flange and the interface are tightly fitted, thus firmly fixing the outer pipe in the joint. The fixing bolts are made of high-strength materials and have strong tensile and shear resistance, ensuring the reliability of the connection under high-pressure conditions. 5. External pipe: One end of the external pipe is inserted into the interface and serves as a transition component connecting the external oil pipe and the main module. The outer diameter of the external pipe is matched with the inner diameter of the interface to ensure a tight seal after insertion. A flange is installed on its surface and it is fixedly connected to the interface by fixing bolts. The wall thickness of the external pipe is precisely designed to withstand the pressure of high-pressure oil while ensuring smooth oil flow, thus acting as a bridge in the entire oil circuit system. 6. Inner Tube Body: The inner tube body is installed inside the main module and is the core structure of the pressure relief component. One end is closed and the other end is fixedly connected to the interface, forming an oil transmission channel inside. Multiple leakage holes are evenly distributed on the surface of the inner tube body, and the leakage holes are distributed in an inclined manner from the inside to the outside to realize the staged pressure relief function. The material of the inner tube body has good pressure resistance and corrosion resistance, and can work stably for a long time in a high-pressure oil environment. At the same time, it provides installation support for components such as springs and conical top blocks. 7. Leakage holes: Leakage holes are evenly distributed on the surface of the inner tube and are the key structure for achieving the first pressure relief. The leakage holes are set at an angle from the inside to the outside. When the oil pressure exceeds the initial buffering capacity of the spring, some oil leaks from the inner tube to the interlayer space of the main module through the angled leakage holes. The angled design slows down the oil leakage rate and avoids the impact of sudden pressure drop on the system, thereby achieving stable staged pressure relief. 8. Conical top block: The conical top block is installed inside the inner tube body. One end is fixedly connected to the spring, and the other end faces the direction of oil flow. When the pressure in the oil circuit suddenly increases, the high-pressure oil pushes the conical top block to move towards the closed end, compressing the spring. The conical structure design of the conical top block can effectively disperse the oil pressure. At the same time, it forms a good sealing fit with the inner tube body during the movement to prevent oil leakage and achieve buffering of pressure shock. 9. Spring: The spring is fixedly installed on the inner wall of the closed end of the inner tube, and the other end is connected to the conical top block. It is the core component for realizing dynamic buffering. When the pressure suddenly increases, the spring absorbs the pressure impact energy through elastic deformation, reducing the impact of the sudden pressure increase on the oil pipe and joint. The elastic coefficient of the spring has been accurately calculated and tested, and can provide appropriate buffering force under different pressure conditions, effectively reducing structural fatigue damage and extending the service life of the equipment. 10. Pressure Relief Pipe: The pressure relief pipe is fixedly installed on the outside of the inner tube body. One end is connected to the inside of the inner tube body, and the other end extends to the outside of the main module. It is a key component for realizing the second active pressure relief. When the pressure rises further and exceeds the buffer limit of the leak hole and the spring, the high-pressure oil is directly discharged to the external safe area through the pressure relief pipe, keeping the internal pressure within a safe range. The diameter and length of the pressure relief pipe are optimized to ensure that the pressure can be released quickly and effectively in an emergency, preventing the joint from exploding due to overpressure.

[0023] Working Principle: The main module 1 is connected to external oil pipes at both ends via fixedly installed interfaces 2. Interface 2 is hollow, forming an oil passage. One end of the external pipe 5 is inserted into the interior of interface 2 and fixedly connected to interface 2 via flange 3 and fixing bolts 4, ensuring the sealing and stability of the oil pipe connection. When high-pressure oil flows into interface 2 from the external oil pipe, it enters the interior of the main module 1 through the external pipe 5 and is transmitted through the inner pipe body 6 and its internal structure. The pressure relief component consists of the inner pipe body 6, spring 9, conical top block 8, leakage hole 7, and pressure relief pipe 10. It mainly achieves explosion-proof function through multi-stage buffering and pressure relief. One end of the inner pipe body 6 is closed, and the other end is fixedly connected to interface 2. Spring 9 is installed on the inner wall of the closed end of the inner pipe body 6, and the other end is fixedly connected to the conical top block 8. When the pressure in the oil circuit suddenly increases, the high-pressure oil pushes the conical top block 8 to move towards the closed end, compressing the spring 9. The elastic deformation of the spring 9 absorbs the pressure impact energy, reducing the impact of the sudden pressure increase on the oil pipe and avoiding damage caused by instantaneous high pressure. Pressure causes the joint to rupture. Multiple leakage holes 7 are evenly distributed on the surface of the inner tube 6, and the leakage holes 7 are distributed in an inclined manner from the inside to the outside. When the oil pressure exceeds the initial buffering capacity of the spring 9, some oil leaks from the inner tube 6 to the interlayer space of the main module 1 through the inclined leakage holes 7, realizing the first pressure relief. The inclined leakage hole design can slow down the oil leakage rate and avoid the impact of sudden pressure drop on the system. A pressure relief pipe 10 is fixedly installed on the outside of the inner tube 6. One end of the pipe is connected to the inside of the inner tube 6, and the other end extends to the outside of the main module 1. When the pressure rises further and exceeds the buffering limit of the leakage holes 7 and the spring 9, the high-pressure oil is directly discharged to the external safe area through the pressure relief pipe 10, realizing the second active pressure relief, controlling the internal pressure within a safe range, and preventing the joint from exploding due to overpressure. Through the elastic buffering of the spring 9, the graded pressure relief of the leakage holes 7, and the active discharge of the pressure relief pipe 10, a three-level pressure protection system is formed to gradually release the abnormal high pressure in the oil circuit and avoid the failure of a single structure due to overload.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure oil pipe explosion-proof connector, comprising a main module (1), with interfaces (2) for connection fixedly installed at both ends of the main module (1), the interface (2) being hollow inside, and one end of an outer pipe (5) installed inside the interface (2), characterized in that, Also includes: The pressure relief component is installed inside the main module (1) and is a structure used to relieve pressure on the oil circuit inside the main module (1); The pressure relief assembly includes an inner tube (6), a spring (9) and a conical top block (8). The main module (1) is provided with an inner tube (6) for pressure relief. A spring (9) for buffering is fixedly installed on the inner wall of one end of the inner tube (6). The other end of the spring (9) is fixedly connected to the conical top block (8). The surface of the inner tube (6) is uniformly provided with a plurality of leakage holes (7), and the plurality of leakage holes (7) are arranged in an inclined manner from the inside to the outside; The inner tube (6) has a pressure relief pipe (10) fixedly installed on one of its outer ends, and the other end of the pressure relief pipe (10) extends to the outside of the main body module (1).

2. A high-pressure fuel pipe explosion-proof joint according to claim 1, characterized in that: The outer pipe (5) is fixedly mounted with a flange (3) for connection. Multiple fixing bolts (4) for fixing are evenly installed on the surface of the flange (3). The other end of the fixing bolts (4) is connected to the interface (2).

3. The explosion-proof high-pressure fuel pipe connector according to claim 1, characterized in that: One end of the inner tube (6) is fixedly connected to the interface (2), and the other end of the inner tube (6) is closed.

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