Pressure-adjustable double-control type pressure release valve
By designing a dual-controlled pressure relief valve for cylinder block and connector, combined with a pressure gauge and control pressure adjustment component, the dynamic adjustment and real-time display of the pressure relief valve in the ship's dual fuel test are solved, and safe and reliable high-pressure gas pressure relief control is achieved, reducing costs and providing remote control functions.
Patent Information
- Application Number
- CN202421836912.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing pressure relief valves cannot meet the dynamic adjustment and real-time pressure display requirements of ship dual fuel field tests, and there is a single opening pressure limit.
A dual-controlled pressure relief valve with adjustable pressure of the cylinder and the connector is designed, combining a pressure gauge and a control pressure adjustment component to achieve automatic and manual control of safe pressure relief. Through the cooperation of the pressure regulating bolts and the spring seat, the pressure can be adjusted, and an electromagnetic pressure relief signal interface is set on the connector to achieve remote control.
It realizes safe pressure relief of high-pressure gas under different pressures, ensures test safety and reliability, while reducing costs, and provides real-time pressure display and remote control functions.
Smart Images
Figure CN223137065U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a ship fluid and gas test system, in particular to a double-control pressure relief valve with adjustable pressure. It is used for the pressure test of a ship dual-fuel adapter assembly to ensure the safe use of high-pressure gas. Background Art
[0002] A pressure relief valve, also known as a safety valve, can automatically open and close according to the working pressure of the system. It is generally installed on the equipment or pipeline of a closed system to protect the safety of the system. Generally, a pressure relief valve has only one seal, and the pressure relief pressure is a constant set value. It can only be applied to fixed scenarios and has the disadvantage of a single opening pressure, unable to meet the needs of dynamic adjustment and real-time pressure display in the ship dual-fuel on-site test. Therefore, it is necessary to improve the existing pressure relief valve.
[0003] The "pressure relief valve with adjustable pressure" disclosed in CN 217234524U includes a housing and a valve stem connected in the housing. One end of the valve stem is connected with a valve core, and the valve core is used to block the liquid discharge channel arranged in the housing. The valve stem is connected with a spring for driving the valve core to move towards the direction close to the valve stem, and the other end of the valve stem is connected with an adjusting mechanism for adjusting the spring force. The adjusting mechanism includes a spring seat, and the spring seat is connected to the other end of the valve stem. It can rotate the spring seat to move on the valve stem, thereby changing the spring force, making the thrust of the protrusion towards the direction close to the spring seat controllable, improving the stability of the valve core, realizing adjustable pressure value during pressure relief, and controlling according to the use environment; after the spring seat is in a suitable position, rotate the rotating disc to make the pressing block press on the end of the spring seat to achieve good positioning of the spring seat, preventing loosening and changing the spring force, which affects the pressure value during pressure relief. Undoubtedly, the technical solution disclosed in this patent document is a beneficial attempt in the technical field. However, it still cannot meet the needs of the ship dual-fuel on-site test. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a double-control pressure relief valve with adjustable pressure, which can realize safe pressure relief with adjustable pressure and automatic or manual control, ensuring the test of high-pressure gas under different pressure regulations.
[0005] A pressure-adjustable dual-control pressure relief valve according to the present utility model includes a cylinder body and a connecting body connected to the right end thereof. The left part of the cylinder body is cylindrical and is provided with a small-diameter inner cavity; the right part of the cylinder body is prismatic and is provided with a large-diameter inner cavity. A threaded hole coaxial with the small-diameter inner cavity is provided at the left end of the cylinder body. A control gas interface is provided on the side wall of the right part of the cylinder body. A control pressure adjustment assembly is provided in the cylinder body; the connecting body is prismatic. A first mating port is provided on its left end face, and a second mating port is provided on its right end face. A communication airway is provided between the first mating port and the second mating port; a threaded connection part is provided on the lower side surface of the connecting body, and an inlet airway communicating with the communication airway is provided at the threaded connection part; a pressure relief airway communicating with the first mating port is provided on the upper side surface of the connecting body; the first mating port is in mating connection with a sealing plug, and a valve core is provided in the second mating port.
[0006] Further, the second mating port of the connecting body is in mating connection with a pressure gauge, and the side head of the pressure gauge abuts against the valve core.
[0007] Further, the control gas interface of the cylinder body is in mating connection with a compressed air connecting piece; the threaded connection part of the connecting body is in mating connection with a test component.
[0008] Further, the control pressure adjustment assembly includes a pressure regulating bolt mating with the threaded hole at the left end of the cylinder body, a spring seat, a compression spring, and a needle valve sequentially arranged in the cylinder body from left to right. The spring seat is arranged in the large-diameter inner cavity of the cylinder body and abuts against the right end of the pressure regulating bolt. The large end of the needle valve is in mating connection with the large-diameter inner cavity of the cylinder body, and the left side thereof abuts against the right end of the compression spring; the small end of the needle valve passes through the central hole of the sealing plug and abuts against the communication airway of the connecting body, and cuts off the sealed communication airway.
[0009] Further, an O-ring seal is provided at the mating part of the large end of the needle valve and the large-diameter inner cavity of the cylinder body.
[0010] Further, a locking nut is provided at the mating part of the pressure regulating bolt and the cylinder body.
[0011] Further, a washer is provided at the mating part of the sealing plug and the first mating port of the connecting body.
[0012] Further, a Y-ring seal is provided at the part where the small end of the needle valve passes through the sealing plug.
[0013] Further, a sealing paper gasket is provided at the part where the right end of the cylinder body contacts the left side surface of the connecting body.
[0014] Further, the cylinder body and the connecting body are connected and fastened by four long screws.
[0015] The utility model has the following advantages compared with the prior art:
[0016] Since a pressure gauge installation interface is provided on the connecting body, and the pressure gauge probe is close to the valve core, the pressure of the test system can be displayed in real time.
[0017] Since the pressure regulating bolt is close to the spring seat, it can not only meet the setting and adjustment of the working pressure of the safety relief valve, but also realize manual pressure relief by adjusting the pressure regulating bolt when the control of the compressed air connecting piece fails, ensuring the use safety.
[0018] Since the control gas interface can also be used as the interface for the electromagnetic pressure relief signal, the remote control of the on-off of the compressed air can be realized, so as to achieve effective remote control and two-way control at close range, with the characteristics of convenient use, low cost, high reliability and stable use. Description of the Drawings
[0019] Figure 1 is the structural schematic diagram of the utility model;
[0020] Figure 2 is the structural schematic diagram of the cylinder block;
[0021] Figure 3 is Figure 2 the left view of;
[0022] Figure 4 is the structural schematic diagram of the connecting body;
[0023] Figure 5 is Figure 4 the left view of;
[0024] Figure 6 is the structural schematic diagram of the needle valve.
[0025] In the figure (technical features represented by the marks):
[0026] 1 - pressure regulating bolt;
[0027] 2 - cylinder block, 21 - small-diameter inner cavity, 22 - large-diameter inner cavity, 23 - threaded hole, 24 - control gas interface;
[0028] 3 - spring seat; 4 - compression spring; 5 - needle valve; 6 - sealing plug, 7 - compressed air connecting piece;
[0029] 8 - connecting body, 81 - first mating port, 82 - second mating port, 83 - communicating air passage, 84 - threaded connection part, 85 - control gas inlet passage, 86 - pressure relief air passage;
[0030] 9 - valve core; 10 - pressure gauge; 11 - long screw, 12 - washer, 13 - O-ring seal, 14 - Y-ring seal, 15 - sealing paper gasket, 16 - lock nut. Detailed implementation mode
[0031] The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings.
[0032] See Figures 1 to 6 A pressure-adjustable dual-control pressure relief valve shown in the figure, including a cylinder body 2 and a connecting body 8 connected to the right end thereof. The left part of the cylinder body 2 is cylindrical, and a small-diameter inner cavity 21 is arranged inside; the right part of the cylinder body 2 is prismatic, and a large-diameter inner cavity 22 is arranged inside. A threaded hole 23 coaxial with the small-diameter inner cavity 21 is arranged at the left end of the cylinder body 2. A control gas interface 24 is arranged on the side wall of the right part of the cylinder body 2. A control pressure adjustment component is arranged inside the cylinder body 2; the connecting body 8 is prismatic, with a first mating port 81 on its left end face and a second mating port 82 on its right end face. A communicating air passage 83 is arranged between the first mating port 81 and the second mating port 82; a threaded connection part 84 is arranged on the lower side surface of the connecting body 8, and an inlet air passage 85 communicating with the communicating air passage 83 is arranged at the threaded connection part 84; a pressure relief air passage 86 communicating with the first mating port 81 is arranged on the upper side surface of the connecting body 8; the first mating port 81 is in mating connection with a sealing plug 6, and a valve core 9 is arranged inside the second mating port 82. The sealing plug 6 is in mating connection with the first mating port 81 of the connecting body 8, which can meet the sealing of the pressure relief gas itself and at the same time meet the isolation from compressed air.
[0033] The second mating port 82 of the connecting body 8 is in mating connection with a pressure gauge 10, and the side head of the pressure gauge 10 is closely attached to the valve core 9. To display the pressure condition of the gas in real time during the working state. The connecting body 8 is provided with a second mating port 82 for mating with the pressure gauge 10, and the adjustment setting of the working pressure of the safety relief valve itself and the real-time pressure acquisition of the working state of the workpiece are realized through the pressure gauge 10.
[0034] The control gas interface 24 of the cylinder body 2 is in mating connection with a compressed air connector 7; the threaded connection part 84 of the connecting body 8 is in mating connection with the test piece. The control gas interface 24 can also be used as an interface for an electromagnetic pressure relief signal to realize the remote control of the on-off of compressed air and realize safe pressure relief without being next to the test part.
[0035] The control pressure regulating component includes a pressure regulating bolt 1 that mates with the threaded hole 23 at the left end of the cylinder block 2, a spring seat 3, a compression spring 4, and a needle valve 5 that are sequentially arranged in the cylinder block 2 from left to right. The spring seat 3 is arranged in the large-diameter inner cavity 22 of the cylinder block 2 and abuts against the right end of the pressure regulating bolt 1. The large end of the needle valve 5 mates with the large-diameter inner cavity 22 of the cylinder block 2 and abuts against the right end of the compression spring 4 on the left side. The small end of the needle valve 5 passes through the central hole of the sealing plug 6 and closely adheres to the communication air passage 83 of the connecting body 8, and cuts off the sealed communication air passage. The needle plug is an integral structure, which not only realizes the sealing with the connecting body 8 and the cylinder block 2, but also ensures the flexibility of movement. The structures of the pressure regulating bolt 1 and the spring seat 3 can meet the setting and adjustment of the working pressure of the safety relief valve, and can also realize manual pressure relief. Even if the control at the compressed air connector 7 fails, manual pressure relief can be achieved by adjusting the pressure regulating bolt 1 to ensure the use safety.
[0036] An O-ring seal 13 is provided at the mating part of the large end of the needle valve 5 and the large-diameter inner cavity 22 of the cylinder block 2 to ensure the sealing of the cylinder block.
[0037] A lock nut 16 is provided at the mating part of the pressure regulating bolt 1 and the cylinder block 2 to ensure the pressure stability of the cylinder block.
[0038] A washer 12 is provided at the mating part of the sealing plug 6 and the first mating port 81 of the connecting body 8 to ensure the sealing effect.
[0039] A Y-ring seal 14 is provided at the part where the small end of the needle valve 5 passes through the sealing plug 6 to further ensure reliable sealing.
[0040] A sealing paper gasket 15 is provided at the part where the right end of the cylinder block 2 contacts the left side surface of the connecting body 8 to further ensure the sealing effect.
[0041] The cylinder block 2 and the connecting body 8 are fixedly connected by four long screws 11.
[0042] The working process of the present utility model: The threaded connection part 84 of the connecting body 8 is connected and sealed with the test component, the controlled gas in the test component is connected, and the small end of the needle valve 5 in the cylinder block 2 passes through the central hole of the sealing plug 6 on the connecting body 8 and closely adheres to the communication air passage 83 of the connecting body 8, cutting off the sealed communication air passage 83. When pressure relief is required, compressed air is introduced from the inlet of the compressed air connector 7 of the cylinder block 2, pushing the needle valve 5 to move leftward, releasing the cut-off seal of the communication air passage 83 of the connecting body 8 by the needle valve 5, so that the gas in the test component is discharged from the pressure relief air passage 86 of the connecting body 8, thereby achieving the purpose of pressure relief. The pressure regulating bolt 1 that is connected and mated with the cylinder block 2 plays a dual role of setting the sealing pressure and manual pressure relief.
Claims
1. A double-controlled pressure relief valve with adjustable pressure, comprising a cylinder block (2) and a connecting body (8) connected to its right end, characterized in that: The left part of the cylinder block (2) is cylindrical, with a small-diameter inner cavity (21) provided therein; the right part of the cylinder block (2) is prismatic, with a large-diameter inner cavity (22) provided therein. A threaded hole (23) coaxial with the small-diameter inner cavity (21) is provided at the left end of the cylinder block (2). A control gas interface (24) is provided on the side wall of the right part of the cylinder block (2). A control pressure regulating assembly is provided in the cylinder block (2); the connecting body (8) is prismatic. A first mating port (81) is provided on its left end face, and a second mating port (82) is provided on its right end face. A communicating air passage (83) is provided between the first mating port (81) and the second mating port (82); a threaded connecting part (84) is provided on the lower side of the connecting body (8), and an inlet air passage (85) communicating with the communicating air passage (83) is provided in the threaded connecting part (84); a pressure relief air passage (86) communicating with the first mating port (81) is provided on the upper side of the connecting body (8); the first mating port (81) is in mating connection with a sealing plug (6), and a valve core (9) is provided in the second mating port (82).
2. The pressure-adjustable dual-control pressure relief valve according to claim 1, characterized in that: The second mating port (82) of the connecting body (8) is in mating connection with a pressure gauge (10), and the side head of the pressure gauge (10) abuts against the valve core (9).
3. The pressure-adjustable dual-control pressure relief valve according to claim 1 or 2, characterized in that: The control gas interface (24) of the cylinder block (2) is in mating connection with a compressed air connector (7); the threaded connecting part (84) of the connecting body (8) is in mating connection with a test component.
4. The pressure-adjustable dual-control pressure relief valve according to claim 3, characterized in that: The control pressure regulating assembly includes a pressure regulating bolt (1) mating with the threaded hole (23) at the left end of the cylinder block (2), a spring seat (3), a compression spring (4) and a needle valve (5) sequentially arranged in the cylinder block (2) from left to right. The spring seat (3) is arranged in the large-diameter inner cavity (22) of the cylinder block (2) and abuts against the right end of the pressure regulating bolt (1). The large end of the needle valve (5) mates with the large-diameter inner cavity (22) of the cylinder block (2), and the left side thereof abuts against the right end of the compression spring (4); the small end of the needle valve (5) passes through the central hole of the sealing plug (6) and is in close contact with the communicating air passage (83) of the connecting body (8), and cuts off the sealed communication of the air passage.
5. The pressure-adjustable dual-control pressure relief valve according to claim 4, characterized in that: An O-ring seal (13) is provided at the mating part of the large end of the needle valve (5) and the large-diameter inner cavity (22) of the cylinder block (2).
6. The pressure-adjustable dual-control pressure relief valve according to claim 4, characterized in that: A locking nut (16) is provided at the mating part of the pressure regulating bolt (1) and the cylinder block (2).
7. The pressure-adjustable dual-control pressure relief valve according to claim 1, characterized in that: at A washer (12) is provided at the mating part of the sealing plug (6) and the first mating port (81) of the connecting body (8).
8. The pressure-adjustable dual-control pressure relief valve according to claim 1, characterized in that: at A Y-ring seal (14) is provided at the part where the small end of the needle valve (5) passes through the sealing plug (6).
9. The pressure-adjustable dual-control pressure relief valve according to claim 1 is characterized in that: A sealing paper gasket (15) is provided at the contact part between the right end of the cylinder block (2) and the left side surface of the connecting body (8).
10. The pressure-adjustable dual-control pressure relief valve according to claim 1, characterized in that: The cylinder block (2) and the connecting body (8) are connected and fastened by four long screws (11).