High-pressure valve with pressure relief mechanism

Abstract

The utility model provides a high-pressure valve with a pressure relief mechanism, which comprises a high-pressure valve body, a liquid inlet flange plate is arranged on the high-pressure valve body, a liquid outlet pipe is arranged on the side edge of the high-pressure valve body, a transition joint is arranged on the side edge of the high-pressure valve body, and the transition joint is connected with a flexible buffering high-pressure transition connecting pipe. The flexible buffering high-pressure transition connecting pipe is connected with the anti-vibration damping high-pressure transfer pipe, the anti-vibration damping high-pressure transfer pipe is connected with the pressure relief mechanism, a medium enters a valve element cavity through the liquid inlet flange plate to be conveyed, and pressure is released through an active flow limiting pressure relief path and an emergency rapid pressure relief path in the case of overpressure. A flexible buffer pipe and a damping adapter pipe are matched to attenuate vibration, during active pressure relief, a micro-channel integrated pressure relief manifold is matched with a flow meter to achieve accurate and controllable pressure relief flow, and negative pressure cavitation of a pipeline caused by sudden pressure drop is avoided; and under the sudden overpressure working condition, a medium directly and quickly enters the pressure relief pipeline through the transition joint, the pressure in the valve body is reduced to a safety interval, and the overpressure pipe explosion risk is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of valves, and more specifically, to a high-pressure valve with a pressure relief mechanism. Background Technology

[0002] In high-pressure fluid transport and control systems, valves are critical control and safety components, and their performance directly affects the operational stability and safety of the entire system. Application No. 201320886951.4 discloses a valve comprising a drive device, a valve shaft, a sealing sleeve, a valve body, and a sealing ring. The drive device is mounted on the valve body, which has a through hole for the valve shaft to pass through. The sidewall of the through hole has a sealing groove for accommodating the sealing sleeve, and the sealing sleeve has a receiving groove for accommodating the sealing ring. In this valve, the first sealing ring can achieve self-sealing of the valve shaft, resulting in a better sealing effect.

[0003] However, existing valves have some shortcomings that need to be improved during use. First, existing valves lack pressure relief structures and the ability to regulate the pressure relief process. Current technology struggles to control flow rate during pressure relief, failing to balance the requirements of pressure relief efficiency and smooth pressure transition.

[0004] Secondly, under extreme conditions such as sudden overpressure, the existing valve response speed, flow capacity, and pressure relief path are insufficient to quickly reduce the pressure to a safe range, posing a risk of pipe rupture or even equipment damage. Simultaneously, the high-pressure shock wave generated in the initial stage of pressure relief and the pipeline vibration caused by high-frequency pressure fluctuations during subsequent pressure relief processes can easily accumulate fatigue stress in weak points such as welds, flanges, or joints, potentially leading to structural failure or leakage under long-term operation.

[0005] Furthermore, existing valves generally neglect the issue of impurity deposition in their structural design. In operating conditions containing particles, precipitates, or easily scale-forming media, impurities easily accumulate at the bottom of the valve core's flow cavity, causing valve core jamming, sluggish operation, or even complete failure. Current pressure relief pipelines lack effective buffering structures for pressure pulses and vibrations in their connecting components, affecting valve reliability. Therefore, a high-pressure valve with a pressure relief mechanism is proposed. Utility Model Content

[0006] The purpose of this utility model is to address the problems raised in the existing background technology. To achieve the above-mentioned purpose, this utility model provides the following technical solution: a high-pressure valve with a pressure relief mechanism, including a high-pressure valve body, an inlet flange on the high-pressure valve body, an outlet pipe on the side of the high-pressure valve body, a transition joint on the side of the high-pressure valve body, the transition joint being connected to a flexible buffer high-pressure transition pipe, the flexible buffer high-pressure transition pipe being connected to a vibration-damping high-pressure transition pipe, the vibration-damping high-pressure transition pipe being connected to a pressure relief mechanism, and an external high-pressure supply pipeline being connected to the inlet flange to achieve a sealed connection. High-pressure medium enters the valve core flow cavity inside the high-pressure valve body. The operator controls the opening and closing of the outlet pipe through an outlet valve wrench to complete the quantitative delivery of the medium. The mating surface between the valve core flow cavity and the valve cover is sealed with a sealing gasket to achieve high-pressure sealing and prevent medium leakage from the valve cover gaps. A pressure measuring tube collects the internal pressure of the valve core flow cavity in real time and displays the current pressure value visually through a pressure gauge, providing data support for pressure control.

[0007] As a preferred technical solution of this utility model, the pressure relief mechanism is equipped with an embedded pressure relief channel integrated pipe and a microchannel integrated pressure relief manifold. The vibration-damping high-pressure transfer pipe is connected to the expansion pressure relief buffer chamber through a pipeline. When the pressure gauge detects that the pressure is close to the warning threshold, the active pressure relief process is initiated: the high-pressure medium enters the microchannel integrated pressure relief manifold through the side interface of the high-pressure valve body. After being diverted by the L-shaped branch pipe, a portion of the medium flows through the flow meter to achieve pressure relief flow measurement and accurately control the pressure relief rate. The remaining medium is transported to the flexible buffer high-pressure transition pipe. The flexible buffer high-pressure transition pipe can offset the pressure pulse impact at the initial stage of pressure relief and avoid pipeline stress overload cracking. Subsequently, the medium enters the vibration-damping high-pressure transfer pipe to further attenuate the high-frequency vibration during the pressure relief process, ensuring the stability of the pipeline connection. Finally, the medium enters the expansion pressure relief buffer chamber to complete pressure reduction and expansion, reducing the medium flow rate and pressure potential energy.

[0008] As a preferred technical solution of this utility model, the expansion and pressure relief buffer chamber is connected to the pressure relief diffuser, and the pressure relief diffuser is provided with a diffuser switch wrench.

[0009] As a preferred technical solution of this utility model, a microchannel integrated pressure relief manifold is provided on the side of the high-pressure valve body, and the microchannel integrated pressure relief manifold is connected to an L-shaped branch pipe.

[0010] As a preferred technical solution of this utility model, the L-shaped branch pipe is connected to the flow meter.

[0011] As a preferred technical solution of this utility model, the outer port of the vibration damping high-pressure transfer pipe is connected to the electromagnetic induction pressure relief status feedback pipe.

[0012] As a preferred technical solution of this utility model, an anti-scaling vent hole is provided on the lower side of the high-pressure valve body, and the anti-scaling vent hole is connected to the vent plug.

[0013] As a preferred technical solution of this utility model, the liquid outlet pipe is provided with a liquid outlet valve wrench.

[0014] As a preferred embodiment of this invention, the high-pressure valve body is connected to a pressure measuring tube, and the pressure measuring tube is connected to a pressure gauge.

[0015] As a preferred technical solution of this utility model, a valve core flow cavity is provided in the high-pressure valve body, and a sealing gasket is provided at the sealing point between the valve core flow cavity and the valve cover.

[0016] Compared with existing technologies, the advantages of this invention are as follows: This invention employs a dual-path system of active flow-limiting pressure relief and emergency high-flow-rate pressure relief. During active pressure relief, a microchannel integrated pressure relief manifold combined with a flow meter ensures precise and controllable pressure relief flow, preventing negative pressure cavitation in the pipeline caused by sudden pressure drops. In the event of a sudden overpressure, the medium directly and rapidly enters the pressure relief pipeline through a transition joint, reducing the internal pressure of the valve body to a safe range and significantly reducing the risk of overpressure pipe rupture.

[0017] This utility model features a flexible buffer high-pressure transition pipe that can offset the pressure pulse impact at the initial stage of pressure relief. The vibration-damping high-pressure transition pipe can attenuate high-frequency pipeline vibration during the pressure relief process, reducing fatigue stress at welds and joints in the pressure relief pipeline and preventing pipeline breakage caused by long-term high-frequency vibration. The bottom anti-scaling vent hole can periodically drain impurities and scale accumulated at the bottom of the valve core flow chamber, preventing impurities from jamming the valve core and affecting the on / off accuracy. Combined with the quick-release structure of the vent plug, it facilitates valve body cleaning and maintenance.

[0018] The flexible buffer high-pressure transition pipe and the vibration damping high-pressure transition pipe of this utility model both adopt standardized threaded joints, which can be quickly disassembled and replaced, facilitating subsequent pipeline upgrades and replacement of faulty components, and reducing operation and maintenance costs. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the present invention;

[0020] Figure 2 A schematic diagram of the vibration-damping high-pressure transfer pipe structure provided by this utility model;

[0021] Figure 3 A schematic diagram of the valve cover structure provided by this utility model;

[0022] Figure 4 A schematic diagram of the microchannel integrated pressure relief manifold structure provided by this utility model;

[0023] Figure 5A schematic diagram of the flexible buffer high-voltage transition pipe structure provided by this utility model.

[0024] The image shows:

[0025] 1. High-pressure valve body; 2. Inlet flange; 3. Outlet pipe; 31. Outlet valve wrench; 4. Transition joint; 5. Flexible buffer high-pressure transition pipe; 6. Vibration-resistant damping high-pressure adapter pipe; 7. Embedded pressure relief channel integrated pipe; 8. Microchannel integrated pressure relief manifold; 9. L-shaped branch pipe; 91. Flow meter; 10. Expanded pressure relief buffer chamber; 11. Pressure relief diffuser; 12. Diffuser switch wrench; 13. Electromagnetic induction pressure relief status feedback pipe; 14. Anti-scaling vent hole; 141. Vent hole plug; 15. Pressure measuring tube; 16. Pressure gauge; 17. Valve core flow chamber; 18. Sealing gasket; 19. Valve cover. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, in the absence of conflict, the embodiments and features and technical solutions in the embodiments of this utility model can be combined with each other. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1: A high-pressure valve with a pressure relief mechanism includes a high-pressure valve body 1, an inlet flange 2, an outlet pipe 3 on the side of the high-pressure valve body 1, and a transition joint 4 on the side of the high-pressure valve body 1. The transition joint 4 is connected to a flexible buffer high-pressure transition pipe 5, which is connected to a vibration-damping high-pressure adapter pipe 6. The vibration-damping high-pressure adapter pipe 6 is connected to the pressure relief mechanism. The pressure relief mechanism includes an embedded pressure relief channel integrated pipe 7 and a microchannel integrated pressure relief manifold 8. The vibration-damping high-pressure adapter pipe 6 is connected to an expanded pressure relief buffer chamber 10 via a pipeline. The expanded pressure relief buffer chamber 10 is connected to a pressure relief diffuser pipe 11, which is equipped with a diffuser pipe switch wrench 12. The microchannel integrated pressure relief manifold 8 is located on the side of the high-pressure valve body 1 and is connected to an L-shaped branch pipe 9. The L-shaped branch pipe 9 is connected to a flow meter 91.

[0029] The outer port of the vibration-damping high-pressure adapter pipe 6 is connected to the electromagnetic induction pressure relief status feedback pipe 13. An anti-scaling vent hole 14 is provided on the lower side of the high-pressure valve body 1, and the anti-scaling vent hole 14 is connected to a vent plug 141. A discharge valve wrench 31 is provided on the discharge pipe 3. The high-pressure valve body 1 is connected to the pressure measuring pipe 15, and the pressure measuring pipe 15 is connected to the pressure gauge 16. A valve core flow chamber 17 is provided inside the high-pressure valve body 1, and a sealing gasket 18 is provided at the sealing point between the valve core flow chamber 17 and the valve cover 19.

[0030] The working principle of a high-pressure valve with a pressure relief mechanism: The external high-pressure supply pipeline is connected to the inlet flange 2 to form a sealed connection. The high-pressure medium enters the valve core flow chamber 17 inside the high-pressure valve body 1. The operator controls the opening and closing of the outlet pipe 3 through the outlet valve wrench 31 to complete the quantitative delivery of the medium. The mating surface between the valve core flow chamber 17 and the valve cover 19 is sealed with a gasket 18 to prevent leakage of the medium from the gaps in the valve cover. The pressure measuring tube 15 collects the internal pressure of the valve core flow chamber 17 in real time and displays the current pressure value visually through the pressure gauge 16, providing data support for pressure control.

[0031] When pressure gauge 16 detects that the pressure is approaching the warning threshold, the active pressure relief process is initiated: the high-pressure medium enters the microchannel integrated pressure relief manifold 8 through the side interface of the high-pressure valve body 1. After being diverted by the L-shaped branch pipe 9, a portion of the medium flows through the flow meter 91 to measure the pressure relief flow rate and accurately control the pressure relief rate. The remaining medium is delivered to the flexible buffer high-pressure transition pipe 5. The flexible buffer high-pressure transition pipe 5 can offset the pressure pulse impact at the initial stage of pressure relief, avoiding pipeline stress overload and cracking. Subsequently, the medium enters the vibration damping high-pressure transition pipe 6 to further attenuate the high-frequency vibration during the pressure relief process, ensuring the stability of the pipeline connection. Finally, the medium enters the expansion pressure relief buffer chamber 10 to complete the pressure reduction and expansion, reducing the medium flow rate and pressure potential energy.

[0032] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A high-pressure valve with a pressure relief mechanism, comprising a high-pressure valve body (1), characterized in that, The high-pressure valve body (1) is provided with an inlet flange (2), the high-pressure valve body (1) is provided with an outlet pipe (3) on its side, the high-pressure valve body (1) is provided with a transition joint (4) on its side, the transition joint (4) is connected to a flexible buffer high-pressure transition pipe (5), the flexible buffer high-pressure transition pipe (5) is connected to a vibration damping high-pressure transition pipe (6), and the vibration damping high-pressure transition pipe (6) is connected to a pressure relief mechanism.

2. A high-pressure valve with a pressure relief mechanism according to claim 1, characterized in that, The pressure relief mechanism is provided with an embedded pressure relief channel integrated pipe (7) and a microchannel integrated pressure relief manifold (8). The vibration damping high-pressure transfer pipe (6) is connected to the expanded pressure relief buffer chamber (10) through a pipeline.

3. A high-pressure valve with a pressure relief mechanism according to claim 2, characterized in that, The expansion and pressure relief buffer chamber (10) is connected to the pressure relief diffuser (11), and the pressure relief diffuser (11) is provided with a diffuser switch wrench (12).

4. A high-pressure valve with a pressure relief mechanism according to claim 3, characterized in that, The high-pressure valve body (1) is provided with a microchannel integrated pressure relief manifold (8) on its side, and the microchannel integrated pressure relief manifold (8) is connected to an L-shaped branch pipe (9).

5. A high-pressure valve with a pressure relief mechanism according to claim 4, characterized in that, The L-shaped branch pipe (9) is connected to the flow meter (91).

6. A high-pressure valve with a pressure relief mechanism according to claim 5, characterized in that, The outer port of the vibration damping high-pressure transfer tube (6) is connected to the electromagnetic induction pressure relief state feedback tube (13).

7. A high-pressure valve with a pressure relief mechanism according to claim 6, characterized in that, The high-pressure valve body (1) is provided with an anti-scaling vent hole (14) on its lower side, and the anti-scaling vent hole (14) is connected to the vent plug (141).

8. A high-pressure valve with a pressure relief mechanism according to claim 7, characterized in that, The outlet pipe (3) is equipped with an outlet valve wrench (31).

9. A high-pressure valve with a pressure relief mechanism according to claim 8, characterized in that, The high-pressure valve body (1) is connected to the pressure measuring tube (15), and the pressure measuring tube (15) is connected to the pressure gauge (16).

10. A high-pressure valve with a pressure relief mechanism according to claim 9, characterized in that, The high-pressure valve body (1) is provided with a valve core flow cavity (17), and a sealing gasket (18) is provided at the sealing point between the valve core flow cavity (17) and the valve cover (19).

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