Adjustable anti-sprint throttle manifold with pressure relief structure

Abstract

The invention discloses an adjustable anti-sprint throttle manifold with a pressure relief structure, which relates to the field of fluid conveying control and comprises a hollow shell, a pipeline inlet and a pipeline outlet are respectively arranged on the side wall of the shell, a pressure relief port is arranged at the bottom of the shell, an adjusting block is slidably connected in an internal sliding cavity, and the adjusting block integrates a pressure relief control component and an auxiliary anti-sprint component. According to the invention, the problem of structural redundancy caused by independent design of anti-sprint and pressure relief components in the prior art is solved. Compared with a traditional distributed manifold, the adjusting block integrates three core functions, the impact energy transfer link is reduced, the anti-sprint response efficiency is improved, and hidden dangers such as pipeline vibration, weld joint cracking and leakage are reduced. The adjusting block is precisely matched with the sliding cavity, and flow adjustment and pressure relief threshold value cooperative adaptation are achieved. The integrally-formed shell enhances the structural strength and the sealing performance, the size is greatly reduced through the integrated design, maintenance is only conducted on the adjusting block and auxiliary assemblies, the installation and maintenance cost is remarkably reduced, and a stable guarantee is provided for a high-pressure fluid conveying system.

Description

Technical Field

[0001] This invention relates to the field of fluid transport control technology, specifically to an adjustable anti-sprint throttling manifold with a pressure relief structure. Background Technology

[0002] In high-pressure fluid transport systems, throttling manifolds are core components for controlling fluid flow and stabilizing system pressure. However, existing throttling manifolds generally suffer from two major technical bottlenecks: First, their anti-impact performance is insufficient. High-pressure fluids flowing within the manifold are prone to impact fluctuations, especially during operational changes (such as pump start-up and shutdown, valve opening and closing). Fluid impacts directly affect the manifold's inner wall and connections, leading to pipeline vibration, weld cracking, and even leaks and other safety accidents. Second, their pressure relief mechanisms are fixed and lack adaptability. The pressure relief thresholds of existing manifolds are mostly factory presets and cannot be flexibly adjusted according to actual operating conditions. When system pressure fluctuates abnormally, fixed pressure relief thresholds are difficult to match the safety pressure requirements under different operating conditions, easily resulting in untimely or accidental pressure relief, affecting the normal operation of the system.

[0003] A search revealed significant deficiencies in existing technologies. For example, the utility model patent with publication number CN202221567890.3 uses only a simple throttling valve for flow control in its manifold, lacking a dedicated anti-surge buffer structure, resulting in prominent pipeline vibration issues caused by fluid impact. The invention patent with publication number CN202110876543.2 uses a fixed-value pressure relief valve for its pressure relief component, with an unadjustable pressure relief threshold, limiting its application to a single operating condition and failing to meet the flexible adaptation requirements of multiple fields and operating conditions. Furthermore, in existing technologies, the anti-surge structure and pressure relief component are mostly designed independently, lacking coordination, leading to redundancy in the overall manifold structure, inconvenient installation and maintenance, and an inability to achieve coordinated protection against pressure fluctuations and impacts.

[0004] Therefore, addressing the technical problems of poor anti-surge performance, non-adjustable pressure relief threshold, and weak adaptability to operating conditions in existing throttling manifolds, designing an integrated throttling manifold that combines efficient anti-surge function with an adjustable pressure relief structure has become a pressing technical need in this field. This invention achieves synergistic protection of impact absorption and flexible pressure relief by integrating an anti-surge buffer component and an adjustable pressure relief component, effectively filling a gap in existing technology. Summary of the Invention

[0005] This invention provides an adjustable anti-sprint throttling manifold with a pressure relief structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An adjustable anti-sprint throttling manifold with a pressure relief structure includes a housing, which is a hollow cavity structure with a pipe inlet on one side wall and a pipe outlet on the opposite side wall. A pressure relief port is provided through the bottom of the housing. A sliding cavity is provided inside the housing, and an adjusting block is slidably connected inside the sliding cavity. A pressure relief control component is provided on the adjusting block, and an auxiliary anti-sprint component is provided inside the adjusting block.

[0007] Preferably, the pressure relief control component includes a through hole disposed on the adjusting block, a first through hole disposed on the side wall of the through hole, the first through hole communicating with the pressure relief port, a sliding tube slidably connected inside the through hole, a second through hole and a third through hole disposed on the lower side of the sliding tube, and pressure springs disposed at both ends of the sliding tube, the pressure springs being connected to both ends of the through hole.

[0008] Preferably, a perforated mesh plate is fixedly installed inside the sliding tube; The second and third through holes are located on both sides of the mesh plate.

[0009] Preferably, a top plate is fixedly connected to the top of the housing; An adjusting rod is provided at the upper end of the adjusting block, and the adjusting rod passes through the top plate; An adjusting disc is rotatably connected to the top plate, and the adjusting disc is threadedly connected to the adjusting rod.

[0010] Preferably, the auxiliary anti-sprint component includes a back pressure chamber and a sprint chamber. The sprint chamber is disposed within the adjusting block. A back pressure rod is disposed within the sprint chamber. The back pressure rod is slidably connected to the bottom plate of the back pressure chamber on the lower side. A limit block is fixedly connected to one end of the back pressure rod located within the back pressure chamber. A back pressure spring is sleeved on one section of the back pressure rod located within the sprint chamber. A back pressure sliding plate is fixedly connected to one end of the back pressure rod located within the sprint chamber. The back pressure sliding plate is slidably connected within the sprint chamber.

[0011] Preferably, a support member is fixedly connected to the lower side of the bottom plate of the back pressure chamber, and the back pressure slide plate is slidably connected to the support member; A back pressure port is formed between the lower end of the support and the outer wall of the adjusting block, and the back pressure port is connected to the pipeline outlet and pipeline inlet.

[0012] Preferably, it also includes a universal anti-stab component, which is disposed in the pipeline connecting the pipeline outlet and the pipeline inlet.

[0013] Preferably, the universal anti-stab assembly includes an anti-stab shell, which has an anti-stab outlet and an anti-stab inlet. The anti-stab outlet is connected to the outlet end of a pipeline, and the anti-stab inlet is connected to the inlet end of a pipeline. An anti-stab hammer is disposed inside the anti-stab shell, and the anti-stab hammer is disposed between the anti-stab outlet and the anti-stab inlet.

[0014] Preferably, an anti-stab frame is fixedly connected to the anti-stab shell, the anti-stab hammer is slidably connected to the anti-stab frame, a limiting slide rod is fixedly connected to the anti-stab hammer, and an anti-stab spring is sleeved on the limiting slide rod; An anti-stab fixing head is fixedly connected to the anti-stab frame, the limiting slide rod passes through the anti-stab fixing head, and the two ends of the anti-stab spring abut against the anti-stab hammer and the anti-stab fixing head respectively.

[0015] Preferably, the front end of the anti-sprint hammer is coaxially arranged with the anti-sprint inlet; The diameter of the front end of the anti-sprint hammer is smaller than the inner diameter of the anti-sprint inlet. The diameter of the rear end of the anti-sprint hammer is larger than the inner diameter of the anti-sprint inlet.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: This application precisely addresses the pain points of existing technologies where anti-surge and pressure relief components are designed independently, resulting in structural redundancy. Compared to traditional distributed manifolds, the integrated design of the regulating block combines the three core functions into one, reducing intermediate steps in the transmission of impact energy and making the anti-surge response more direct and efficient. This significantly reduces pipeline vibration amplitude and avoids safety hazards such as weld cracking and leakage. The precise fit between the regulating block and the sliding chamber achieves coordinated adaptation of flow regulation and pressure relief thresholds, adapting to various operating conditions from low pressure and low flow to high pressure and high flow without the need for individual adjustment of component parameters. Simultaneously, the integrated molded shell enhances structural strength and improves sealing performance. The integrated design significantly reduces the manifold volume, eliminating the need for complex additional supports during installation. Maintenance only requires operation on the regulating block and auxiliary components, significantly reducing installation and maintenance costs and providing a stable and reliable foundation for high-pressure fluid transport systems. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the main structure of the present invention; Figure 3 This is a schematic diagram of the sliding tube structure of the present invention; Figure 4 This is a schematic diagram of the auxiliary anti-stab component structure of the present invention; Figure 5 This is a schematic diagram of the general anti-stab component structure of the present invention.

[0018] In the diagram: 1. Shell; 2. Pipe outlet; 3. Pipe inlet; 4. Pressure relief port; 5. Top plate; 6. Adjusting disc; 7. Adjusting rod; 8. Adjusting block; 9. Through hole; 10. Sliding pipe; 11. Mesh plate; 12. Pressure spring; 13. First through hole; 14. Sliding cavity; 15. Back pressure cavity; 16. Second through hole; 17. Third through hole; 18. Back pressure cavity bottom plate; 19. Back pressure rod; 20. Limiting block; 21. Back pressure port; 22. Back pressure sliding plate; 23. Support component; 24. Back pressure spring; 25. Anti-stab shell; 26. Anti-stab outlet; 27. Anti-stab inlet; 28. Anti-stab hammer; 29. ​​Anti-stab frame; 30. Anti-stab spring; 31. Anti-stab fixing head; 32. Limiting sliding rod. Detailed Implementation

[0019] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish protective components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0020] Example 1: Please refer to Figure 1 , Figure 2 An adjustable anti-sprint throttling manifold with a pressure relief structure includes a housing 1, which is a hollow cavity structure with a pipe inlet 3 on one side wall and a pipe outlet 2 on the opposite side wall. A pressure relief port 4 is provided through the bottom of the housing 1. A sliding cavity 14 is provided inside the housing 1, and an adjusting block 8 is slidably connected inside the sliding cavity 14. A pressure relief control component is provided on the adjusting block 8, and an auxiliary anti-sprint component is provided inside the adjusting block 8.

[0021] The working principle and beneficial effects of the above scheme are as follows: After the high-pressure fluid enters the hollow cavity through the pipe inlet 3 of the shell 1, the shell 1, as a unified load-bearing structure, provides a stable installation and flow environment for each functional component. The regulating block 8 in the sliding cavity 14 can slide flexibly along the axis, achieving basic flow control by changing the flow cross-sectional area between itself and the inner wall of the shell 1, and forming a linkage mechanism of "flow regulation - impact attenuation - pressure unloading" through the integrated pressure relief control component and auxiliary anti-surge component. Under normal operating conditions, the regulating block 8 maintains a preset position, and the fluid flows smoothly to the pipe outlet 2 through the gap between the components; when the operating conditions change, resulting in increased pressure or increased impact, the regulating block can optimize the channel under the action of fluid pressure or through external adjustment. The pressure relief control component senses the pressure change in real time and quickly discharges the overpressure fluid through the pressure relief port 4. The auxiliary anti-surge component synchronously attenuates the impact energy, preventing impact fluctuations from being transmitted to the pipe connection parts and ensuring a smooth delivery process. This embodiment accurately solves the pain points of independent design and structural redundancy of anti-surge and pressure relief components in the prior art. Compared to traditional distributed manifolds, the integrated design of regulating block 8 combines the three core functions into one, reducing intermediate steps in the transmission of impact energy and making the anti-surge response more direct and efficient. This significantly reduces pipeline vibration amplitude and avoids safety hazards such as weld cracking and leakage. The precise fit between regulating block 8 and sliding chamber 14 achieves coordinated adaptation of flow regulation and pressure relief threshold, adapting to various operating conditions from low pressure and low flow to high pressure and high flow without the need for individual component parameter adjustments. Simultaneously, the integrated housing 1 enhances structural strength and improves sealing performance. The integrated design significantly reduces the manifold volume, eliminating the need for complex additional supports during installation. Maintenance only requires operation on regulating block 8 and its auxiliary components, significantly reducing installation and maintenance costs and providing a stable and reliable foundation for high-pressure fluid transport systems.

[0022] Example 2: Please refer to Figures 1-3 Based on Embodiment 1, the pressure relief control component includes a through hole 9 disposed on the adjusting block 8, a first through hole 13 disposed on the side wall of the through hole 9, the first through hole 13 communicating with the pressure relief port 4, a sliding tube 10 slidably connected inside the through hole 9, a second through hole 16 and a third through hole 17 disposed on the lower side of the sliding tube 10, and pressure springs 12 disposed at both ends of the sliding tube 10, the pressure springs 12 being connected to both ends of the through hole 9.

[0023] A perforated mesh plate 11 is fixedly installed inside the sliding tube 10; The second through hole 16 and the third through hole 17 are located on both sides of the mesh plate 11, respectively.

[0024] A top plate 5 is fixedly connected to the top of the housing 1; An adjusting rod 7 is provided at the upper end of the adjusting block 8, and the adjusting rod 7 passes through the top plate 5; An adjusting disc 6 is rotatably connected to the top plate 5, and the adjusting disc 6 is threadedly connected to the adjusting rod 7.

[0025] The working principle and beneficial effects of the above scheme are as follows: The through hole 9 on the adjusting block 8 is connected to the pressure relief port 4 at the bottom of the housing 1 through the first through hole 13. The sliding tube 10 is slidably connected inside the through hole 9, and the second through hole 16 and the third through hole 17 on its lower side are located on both sides of the internal mesh plate 11. In the initial state, the preload of the pressure spring 12 keeps the sliding tube 10 fixed, and the second and third through holes are misaligned with the first through hole 13, and the pressure relief channel is closed. When the fluid pressure in the manifold exceeds the preset threshold, the fluid pressure overcomes the preload of the pressure spring 12 and pushes the sliding tube 10 to slide along the axis of the through hole 9. The first through hole 13 is aligned with any one of the second through hole 16 and the third through hole 17, and the overpressure fluid enters the pressure relief port 4 through the first through hole 13 and is discharged. When the system pressure drops below the threshold, the elastic restoring force of the pressure spring 12 pushes the sliding tube 10 to reset, and the pressure relief channel is closed. The mesh plate 11 allows the sliding tube 10 to move with the pressure difference of the fluid. Furthermore, the adjusting disc 6 at the top of the housing 1 is connected to the adjusting rod 7 via a threaded drive. Rotating the adjusting disc 6 adjusts the position of the adjusting block 8 within the sliding cavity 14, indirectly changing the preload of the pressure spring 12 and the fluid flow characteristics, thus achieving fine-tuning of the pressure relief threshold. This solution overcomes the limitation of existing fixed-value pressure relief valves that can only adapt to a single working condition, perfectly adapting to the needs of multiple fields such as petrochemicals and hydraulic transmission. Compared to traditional independent pressure relief devices, this component is integrated into the adjusting block 8, simplifying the manifold structure, reducing leakage points, and achieving coordinated linkage between throttling and pressure relief. During operation, only rotating the adjusting disc 6 is required to complete the threshold adjustment, without the need for professional tools. During maintenance, only disassembling the top plate 5 is required to inspect the core components, significantly reducing operation and maintenance costs.

[0026] Example 3: Please refer to Figures 1-4 Based on Embodiment 1, the auxiliary anti-sprint assembly includes a back pressure chamber 15 and a sprint chamber. The sprint chamber is disposed within the adjusting block 8. A back pressure rod 19 is disposed within the sprint chamber. The back pressure rod 19 is slidably connected to the back pressure chamber bottom plate 18 on the lower side of the back pressure chamber 15. One end of the back pressure rod 19 located within the back pressure chamber 15 is fixedly connected to a limit block 20. A back pressure spring 24 is sleeved on a section of the back pressure rod 19 located within the sprint chamber. A back pressure sliding plate 22 is fixedly connected to one end of the back pressure rod 19 located within the sprint chamber. The back pressure sliding plate 22 is slidably connected within the sprint chamber.

[0027] A support member 23 is fixedly connected to the lower side of the back pressure chamber bottom plate 18, and the back pressure slide plate 22 is slidably connected to the support member 23; A back pressure port 21 is formed between the lower end of the support member 23 and the outer wall of the adjusting block 8. The back pressure port 21 is connected to the pipeline outlet 2 and the pipeline inlet 3.

[0028] The working principle and beneficial effects of the above scheme are as follows: The auxiliary anti-sprint component is integrated inside the adjusting block 8. The sprint chamber and the back pressure chamber 15 are separated by the back pressure chamber base plate 18. The back pressure rod 19 passes through the base plate and is fixed to the back pressure slide plate 22. The back pressure spring 24 is sleeved on the back pressure rod 19. The back pressure port 21 formed by the lower end of the support member 23 and the outer wall of the adjusting block 8 connects the pipeline inlet 3 and the pipeline outlet 2, ensuring that the pressure in the sprint chamber is linked with the main channel in real time. Under normal operating conditions, the fluid impact pressure is small, and the preload of the back pressure spring 24 keeps the back pressure slide plate 22 stationary. When the operating condition changes and the impact intensifies, the fluid enters the sprint chamber through the back pressure port 21. The impact pressure pushes the back pressure slide plate 22 to slide along the support member 23, compressing the back pressure spring 24. The elastic deformation of the spring directly absorbs the impact kinetic energy. After the impact energy is released, the spring pushes the component to reset, and the back pressure port 21 remains open, ensuring that the component responds quickly to subsequent impacts. Furthermore, this component works in synergy with the pressure relief control component. When an impact causes the pressure to rise above a threshold, the pressure relief component simultaneously opens to release pressure, preventing damage to the manifold from the combined effects of impact and overpressure. Pipeline vibration amplitude is significantly reduced, effectively addressing the shortcomings of traditional manifolds in terms of anti-impact performance. The connection between the back pressure port 21 and the main channel enables real-time pressure linkage, allowing the component to automatically adapt to impacts of varying intensities without manual intervention, demonstrating excellent adaptability. The component is integrated within the regulating block 8, occupying no additional installation space, resulting in a more compact manifold structure. It also avoids the complex piping connections of independent buffer devices, reducing the risk of leakage. The mechanical structure contains no electronic components, is resistant to high pressure and impurities, and has an extremely low failure rate. Maintenance only requires disassembling the regulating block 8 to inspect and replace vulnerable parts such as the back pressure spring 24, resulting in low costs.

[0029] Example 4: Please refer to Figure 5 Based on Embodiment 1, a universal anti-stab component is also included, which is disposed in the pipeline connecting the pipeline outlet 2 and the pipeline inlet 3.

[0030] The universal anti-stab assembly includes an anti-stab housing 25, which has an anti-stab outlet 26 and an anti-stab inlet 27. The anti-stab outlet 26 is connected to the outlet end of a pipeline, and the anti-stab inlet 27 is connected to the inlet end of a pipeline. An anti-stab hammer 28 is disposed inside the anti-stab housing 25, and the anti-stab hammer 28 is disposed between the anti-stab outlet 26 and the anti-stab inlet 27.

[0031] An anti-stab frame 29 is fixedly connected to the anti-stab shell 25, and the anti-stab hammer 28 is slidably connected to the anti-stab frame 29. A limiting slide rod 32 is fixedly connected to the anti-stab hammer 28, and an anti-stab spring 30 is sleeved on the limiting slide rod 32. An anti-stab fixing head 31 is fixedly connected to the anti-stab frame 29, the limiting slide rod 32 passes through the anti-stab fixing head 31, and the two ends of the anti-stab spring 30 abut against the anti-stab hammer 28 and the anti-stab fixing head 31 respectively.

[0032] The front end of the anti-sprint hammer 28 is coaxially arranged with the anti-sprint inlet 27; The diameter of the front end of the anti-sprint hammer 28 is smaller than the inner diameter of the anti-sprint inlet 27; The diameter of the rear end of the anti-sprint hammer 28 is larger than the inner diameter of the anti-sprint inlet 27.

[0033] The working principle and beneficial effects of the above scheme are as follows: The universal anti-stab assembly is connected to the connecting pipeline between the inlet 3 and the outlet 2 via a flange. The anti-stab hammer 28 inside the anti-stab housing 25 has a front diameter smaller than the inner diameter of the anti-stab inlet 27 (ensuring normal flow), and a rear diameter larger than the inner diameter of the inlet (forming a mechanical limit). It is slidably connected to the anti-stab frame 29, and the limiting slide rod 32 passes through the anti-stab fixing head 31. Under normal operating conditions, the fluid impact pressure is relatively small. With the anti-stab hammer 28 in its initial position, the fluid flows smoothly to the anti-stab outlet 26 through the gap between the front end of the hammer and the anti-stab inlet 27, and the space between the hammer and the inner wall of the anti-stab housing 25. When the impact intensifies, the fluid impact pressure overcomes the preload of the anti-stab spring 30, pushing the anti-stab hammer 28 to slide along the anti-stab frame 29. The anti-stab spring 30 is compressed to absorb the impact kinetic energy. After the impact, the elastic restoring force of the anti-stab spring 30 pushes the hammer back to its original position. This assembly first blocks large, instantaneous impacts, and the residual fluctuations are then attenuated by the auxiliary anti-stab assembly, achieving all-around protection. The dual anti-impact mechanism constructed in this embodiment completely solves the problem of incomplete impact protection in traditional manifolds. The components adopt a modular design, connecting to pipelines via flanges, facilitating easy installation and disassembly. They can be flexibly adapted to different pipeline specifications, exhibiting high versatility and suitability for high-pressure fluid transport systems in various fields such as petrochemicals and mining. Maintenance only requires removing the flanges to remove the components and replace easily worn parts such as standardized anti-impact springs 30 and gaskets, resulting in low costs and eliminating the need to disassemble the entire manifold system, significantly reducing maintenance workload and downtime. In synergy with the pressure relief components, it further avoids the risks of pressure buildup and cumulative impacts, providing comprehensive, multi-layered safety protection for high-pressure fluid transport.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustable anti-surge throttling manifold with a pressure relief structure, characterized in that, Includes a housing (1), which is a hollow cavity structure. A pipe inlet (3) is opened on one side wall and a pipe outlet (2) is opened on the opposite side wall. A pressure relief port (4) is provided through the bottom of the housing (1). A sliding cavity (14) is provided inside the housing (1). An adjusting block (8) is slidably connected inside the sliding cavity (14). A pressure relief control component is provided on the adjusting block (8). An auxiliary anti-stab component is provided inside the adjusting block (8).

2. The adjustable anti-surge throttling manifold with pressure relief structure according to claim 1, characterized in that, The pressure relief control component includes a through hole (9) disposed on the adjusting block (8). A first through hole (13) is disposed on the side wall of the through hole (9). The first through hole (13) is connected to the pressure relief port (4). A sliding tube (10) is slidably connected inside the through hole (9). A second through hole (16) and a third through hole (17) are disposed on the lower side of the sliding tube (10). Pressure springs (12) are disposed at both ends of the sliding tube (10). The pressure springs (12) are connected to both ends of the through hole (9).

3. The adjustable anti-surge throttling manifold with pressure relief structure according to claim 2, characterized in that, A perforated mesh plate (11) is fixedly installed inside the sliding tube (10); The second through hole (16) and the third through hole (17) are located on both sides of the mesh plate (11).

4. The adjustable anti-surge throttling manifold with pressure relief structure according to claim 2, characterized in that, The top of the shell (1) is fixedly connected to a top plate (5); An adjustment rod (7) is provided at the upper end of the adjustment block (8), and the adjustment rod (7) passes through the top plate (5); An adjusting disc (6) is rotatably connected to the top plate (5), and the adjusting disc (6) is threadedly connected to the adjusting rod (7).

5. The adjustable anti-surge throttling manifold with pressure relief structure according to claim 1, characterized in that, The auxiliary anti-sprint assembly includes a back pressure chamber (15) and a sprint chamber. The sprint chamber is located inside the adjusting block (8). A back pressure rod (19) is provided inside the sprint chamber. The back pressure rod (19) is slidably connected to the back pressure chamber bottom plate (18) on the lower side of the back pressure chamber (15). One end of the back pressure rod (19) located inside the back pressure chamber (15) is fixedly connected to a limit block (20). A back pressure spring (24) is sleeved on a section of the back pressure rod (19) located inside the sprint chamber. A back pressure sliding plate (22) is fixedly connected to one end of the back pressure rod (19) located inside the sprint chamber. The back pressure sliding plate (22) is slidably connected inside the sprint chamber.

6. The adjustable anti-surge throttling manifold with pressure relief structure according to claim 5, characterized in that, A support member (23) is fixedly connected to the lower side of the back pressure chamber bottom plate (18), and the back pressure slide plate (22) is slidably connected to the support member (23); A back pressure port (21) is formed between the lower end of the support member (23) and the outer wall of the adjusting block (8), and the back pressure port (21) is connected to the pipeline outlet (2) and the pipeline inlet (3).

7. The adjustable anti-sprint throttling manifold with pressure relief structure according to claim 1, characterized in that, It also includes a universal anti-stab component, which is installed in the pipeline connecting the pipeline outlet (2) and the pipeline inlet (3).

8. The adjustable anti-sprint throttling manifold with a pressure relief structure according to claim 7, characterized in that, The universal anti-stab assembly includes an anti-stab shell (25), which is provided with an anti-stab outlet (26) and an anti-stab inlet (27). The anti-stab outlet (26) is connected to the outlet end of the pipeline, and the anti-stab inlet (27) is connected to the inlet end of the pipeline. An anti-stab hammer (28) is provided inside the anti-stab shell (25), and the anti-stab hammer (28) is located between the anti-stab outlet (26) and the anti-stab inlet (27).

9. The adjustable anti-sprint throttling manifold with a pressure relief structure according to claim 8, characterized in that, An anti-stab frame (29) is fixedly connected to the anti-stab shell (25), and the anti-stab hammer (28) is slidably connected to the anti-stab frame (29). A limit slide rod (32) is fixedly connected to the anti-stab hammer (28), and an anti-stab spring (30) is sleeved on the limit slide rod (32). An anti-stab fixing head (31) is fixedly connected to the anti-stab frame (29), the limiting slide rod (32) passes through the anti-stab fixing head (31), and the two ends of the anti-stab spring (30) abut against the anti-stab hammer (28) and the anti-stab fixing head (31) respectively.

10. An adjustable anti-surge throttling manifold with a pressure relief structure according to claim 8, characterized in that, The front end of the anti-sprint hammer (28) is coaxially arranged with the anti-sprint inlet (27); The diameter of the front end of the anti-sprint hammer (28) is smaller than the inner diameter of the anti-sprint inlet (27); The diameter of the rear end of the anti-sprint hammer (28) is larger than the inner diameter of the anti-sprint inlet (27).

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