CN216867626U

CN216867626U - Direct-acting hydraulic pressure relief valve

Info

Publication number: CN216867626U
Application number: CN202122832858.2U
Authority: CN
Inventors: 杨玉明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-07-01
Anticipated expiration: 2031-11-18

Abstract

The utility model belongs to the technical field of pressure relief valves, and particularly relates to a direct-acting hydraulic pressure relief valve which comprises a valve body and a diaphragm piston, wherein a bolt is arranged on the inner side of the valve body, a first nut is connected to the outer side of the bolt, a water inlet is formed in the side of the valve body, a water outlet is formed in the other side of the valve body, a rotary disc is arranged above the valve body, an adjusting screw is fixed below the rotary disc, a sealing ring is arranged on the side of the adjusting screw, a hollow connecting rod or a solid connecting rod is arranged below the adjusting screw in a straight-top mode, springs are arranged on the upper portions of the hollow connecting rod and the solid connecting rod, a fixing block is connected to the inner side of each spring, the fixing block is fixed above the diaphragm piston, a second nut is connected below the diaphragm piston, and a sealing cover plate is arranged on the side of the second nut. This direct action formula water conservancy relief valve conveniently eliminates the influence that the water hammer produced, and the hammer that disappears and the pressure release is once accomplished, and conveniently adjusts the size of pressure release value.

Description

Direct-acting hydraulic pressure relief valve

Technical Field

The utility model relates to the technical field of pressure relief valves, in particular to a direct-acting hydraulic pressure relief valve.

Background

The pressure relief valve is mainly used in the occasion of too big pressure, when the pressure in equipment or pipeline surpassed the set pressure of pressure relief valve, automatic opening pressure release promptly, guaranteed that equipment and pipeline medium pressure are under the set pressure, protection equipment and pipeline prevent to meet accident, but present pressure relief valve has following problem:

1. the existing overpressure relief valves are all indirect relief valves, and the indirect overpressure relief valves are all operated through a small auxiliary valve arranged outside a main valve, and then the main valve is driven to open to relieve pressure.

2. The disadvantages are that: the small auxiliary valve is also a pressure release valve, the small valve clack is opened to release pressure firstly, then high-pressure water in the upper cavity of the large valve body is discharged through a guide pipe on the small auxiliary valve, and then the large main valve clack is opened to discharge water and release pressure, so that the pressure release lag of the main valve clack (the water discharge is slow) is caused in the process, and the water hammer damage cannot be effectively eliminated.

In view of the above problems, technical innovation is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model provides the following technical scheme: direct action formula water conservancy relief valve, including valve body and diaphragm piston, the valve body inboard is provided with the bolt, and the bolt outside is connected with first nut, the valve body avris is provided with the water inlet, and the valve body opposite side is provided with the delivery port to the carousel is installed to the valve body top, the carousel below is fixed with adjusting screw, and the adjusting screw avris is provided with the sealing washer to adjusting screw below is directly topped hollow connecting rod or solid connecting rod, hollow connecting rod and solid connecting rod upper portion are provided with the spring to the spring inboard is connected with the fixed block, the fixed block is fixed in the top of diaphragm piston, and is connected with the second nut below the diaphragm piston to the second nut avris is provided with sealed apron.

Preferably, the valve body and the bolt are arranged in a penetrating mode, and the bolt is connected with the first nut in a threaded mode.

Preferably, the water inlet and the valve body are arranged in a nested connection mode, and the water inlet and the water outlet are arranged on the same straight line.

Preferably, the turntable and the adjusting screw are welded, the adjusting screw and the valve body are in threaded connection, and the adjusting screw and the sealing ring are tightly attached.

Preferably, the hollow connecting rod and the spring are arranged in a mutually perpendicular mode, the spring and the solid connecting rod are arranged in a nested connection mode, and the spring and the fixing block are arranged in a penetrating connection mode.

Preferably, the diaphragm piston and the fixed block are arranged in a welding mode, the diaphragm piston and the solid connecting rod are arranged in a nested mode, and the solid connecting rod and the second nut are arranged in a threaded connection mode.

Compared with the prior art, the utility model has the beneficial effects that: the direct-acting hydraulic pressure relief valve is convenient to eliminate the influence caused by a water hammer, complete hammer elimination and pressure relief at one time and conveniently adjust the magnitude of the pressure relief value;

1. when the direct-acting hydraulic pressure relief valve is used, firstly, a water inlet and a water outlet are respectively connected to an equipment or a pipeline port, then bolts are inserted into the connection position of the upper part and the lower part of the valve body, then the tightness of the upper part and the lower part of the valve body is increased by screwing in a first nut, during the pressure relief process, water flow firstly enters the interior of the valve body through the water inlet, the pressure of the water flow directly acts on the cross-sectional surface of a sealing cover plate, wherein S1 is the area of a diaphragm piston or the sealing cover plate, S2 is the area of the sealing cover plate or the diaphragm piston, and S2 is larger than S1, after pressure water P1 enters the valve body, when the pushing force P1 multiplied by S1 plus the downward pushing force F of a spring is equal to P1 multiplied by S2, the sealing cover plate is tightly combined with the valve seat in a static state, the pressure water does not flow out, when P1 is increased to P2, the balance formula is changed into P2 multiplied by S2 which is larger than P2 multiplied by S1 plus the downward pushing force F of the spring, and then the balance is broken, the sealing cover plate is pulled up to release high pressure by overflowing, when P2 is reduced to be the same as P1, the sealing cover plate resets again to stop overflowing, and thus the pressure relief and hammer eliminating process of one-time overpressure water drainage and resetting is completed;

2. when using this direct action formula water conservancy relief valve, when needs carry out the pressure release value regulation according to different situation, the carousel is twisted to the accessible, the carousel because of its unevenness set up with great volume can the hand rotate the time and the frictional force between the carousel, conveniently rotate adjusting screw, increase adjusting screw to the pressure of spring through screw in adjusting screw down, increase the decurrent resilience thrust of spring to this size of adjusting the pressure release value.

Drawings

FIG. 1 is a schematic view of a first front cross-sectional structure of the present invention;

FIG. 2 is a schematic diagram of a second front cross-sectional structure according to the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is an enlarged view of the structure at A in FIG. 1 according to the present invention.

In the figure: 1. a valve body; 2. a bolt; 3. a first nut; 4. a water inlet; 5. a water outlet; 6. a turntable; 7. adjusting the screw rod; 8. a seal ring; 9. a hollow connecting rod; 10. a solid connecting rod; 11. a spring; 12. a fixed block; 13. a diaphragm piston; 14. a second nut; 15. and sealing the cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the direct-acting hydraulic relief valve comprises a valve body 1, a bolt 2, a first nut 3, a water inlet 4, a water outlet 5, a rotary table 6, an adjusting screw 7, a sealing ring 8, a hollow connecting rod 9, a solid connecting rod 10, a spring 11, a fixed block 12, a diaphragm piston 13, a second nut 14 and a sealing cover plate 15, wherein the bolt 2 is arranged on the inner side of the valve body 1, the first nut 3 is connected with the outer side of the bolt 2, the water inlet 4 is arranged on the lateral side of the valve body 1, the water outlet 5 is arranged on the other side of the valve body 1, the rotary table 6 is arranged above the valve body 1, the adjusting screw 7 is fixed below the rotary table 6, the sealing ring 8 is arranged on the lateral side of the adjusting screw 7, the hollow connecting rod or the solid connecting rod 9 is arranged directly above the adjusting screw 7, the solid connecting rod 10 is arranged on the outer side of the hollow connecting rod 9, the spring 11 is arranged on the outer side of the solid connecting rod 10, and the fixed block 12 is connected with the inner side of the spring 11, the fixed block 12 is fixed above the diaphragm piston 13, a second nut 14 is connected below the diaphragm piston 13, and a sealing cover plate 15 is arranged on the side of the second nut 14;

furthermore, the valve body 1 and the bolt 2 are arranged in an inserting connection mode, the bolt 2 and the first nut 3 are arranged in a threaded connection mode, the bolt 2 can fix the upper structure and the lower structure of the valve body 1 through the inserting connection mode, the fastening degree of the bolt 2 to the upper portion and the lower portion of the valve body 1 is increased through the threaded connection mode, and the sealing performance of the valve body 1 is improved;

furthermore, the water inlet 4 and the valve body 1 are arranged in a nested connection mode, the water inlet 4 and the water outlet 5 are arranged on the same straight line, the nested connection mode facilitates water inlet pressurization of the interior of the valve body 1 through the water inlet 4, after the same straight line is arranged to enable the pressure to reach a certain degree, the diaphragm piston 13 and the spring 11 are jacked up by water pressure, water flow entering the water inlet 4 can be discharged through the water outlet 5, and the transmission distance is reduced;

furthermore, the rotary table 6 and the adjusting screw 7 are welded, the adjusting screw 7 and the valve body 1 are in threaded connection, the adjusting screw 7 and the sealing ring 8 are in close fit, the welding connection increases firmness between the rotary table 6 and the adjusting screw 7, the adjusting screw 7 is convenient to rotate by screwing the rotary table 6, the adjusting screw 7 is not easy to fall out of the valve body 1 due to the threaded connection, the contact area between the adjusting screw 7 and the sealing ring 8 is increased due to the close fit, and the overall sealing performance is increased;

furthermore, the hollow connecting rod 9 and the spring 11 are arranged in a mutually perpendicular mode, the spring 11 and the solid connecting rod 10 are arranged in a nested mode, the spring 11 and the fixed block 12 are arranged in an inserting mode, the adjusting screw 7 can abut against the hollow connecting rod 9 to apply pressure to the spring 11 downwards when being screwed downwards due to the mutually perpendicular arrangement, the pressure to the spring 11 is adjusted to control the size of water flow pressure required by jacking of the diaphragm piston 13 below the spring 11, the uniformity of overall coverage is improved due to the nested connection arrangement, the diaphragm piston 13 connected with the fixed block 12 can be pressed downwards due to the resilience acting force of the spring 11 due to the inserting connection arrangement, and the water flow entering the water inlet 4 can be conveniently blocked by the sealing cover plate 15 below the diaphragm spring 11;

further, diaphragm piston 13 and fixed block 12 adopt welded connection to set up, and diaphragm piston 13 and solid connecting rod 10 adopt nested connection to set up, and solid connecting rod 10 and second nut 14 adopt threaded connection to set up, welded connection sets up the fastness that has increased between diaphragm piston 13 and fixed block 12, nested connection sets up the homogeneity that has increased whole cover, second nut 14 is convenient for install in the solid connecting rod 10 outside when threaded connection sets up, play and prevent that diaphragm piston 13 from droing out the effect of solid connecting rod 10 position.

The working principle is as follows: when the direct-acting hydraulic pressure relief valve is used, according to the state of the pressure relief valve in fig. 1, firstly, a water inlet 4 is connected with an equipment or pipeline port, then a bolt 2 is inserted into the joint of the upper part and the lower part of a valve body 1, then the tightness of the upper part and the lower part of the valve body is increased by screwing a first nut 3, in the pressure relief process, water flow firstly enters the interior of the valve body 1 through the water inlet 4 and enters the lower part of an adjusting screw 7 through a hollow connecting rod 9, pressure is exerted downwards, at the moment, a sealing ring 8 prevents the water flow from leaking through the upper part, the pressure of the water flow directly acts on the cross-section surface of a sealing cover plate 15, wherein S1 is a diaphragm piston 13, S2 is the area of the sealing cover plate 15, S2 is larger than S1, after pressure water P1 enters the valve body 1, when the pushing force P1 times S1 and the spring 11 downwards pushing force F equals to P1 times S2, the sealing cover plate 15 is tightly combined with the valve body 1 in a static state, and the pressure water does not outflow, when the P1 is increased to P2, the above balance formula is changed into that P2 by S2 is larger than P2 by S1 and the downward thrust F of the spring 11 is added, at this time, the balance is broken, the sealing cover plate 15 is pulled up and the overflowing releases high pressure, when the P2 is reduced to be the same as the P1, the sealing cover plate 15 is reset again and stops overflowing, so that the overpressure drainage and hammer relief process of resetting is completed, according to the state of the pressure relief valve shown in FIG. 2, the water inlet 4 is connected to the device or the pipeline port, during the pressure relief process, the water flow firstly enters the interior of the valve body 1 through the water inlet 4, through applying the thrust to the cross-section surface of the sealing cover plate 15, when the downward thrust F of the spring 11 is equal to P1 by S2, the sealing cover plate 15 is tightly combined with the valve body 1 in a static state, the pressure water does not flow out, when the P1 is increased to P2, the above balance formula is changed into that P2 by S2 is larger than the downward thrust F of the spring 11, at this time, the break is broken, the sealing cover plate 15 is pulled up to release high pressure by overflowing, when P2 is reduced to be the same as P1, the sealing cover plate 15 resets again to stop overflowing, so that one-time overpressure water drainage is completed, the pressure relief hammer eliminating process of resetting again is realized, when the pressure relief value is required to be adjusted according to different conditions, the rotating disc 6 can be screwed, the rotating disc 6 and the friction force between the rotating disc 6 and the adjusting screw 7 can be rotated by hand due to the uneven arrangement and the large volume of the rotating disc 6, the adjusting screw 7 is convenient to rotate, the pressure of the adjusting screw 7 on the spring 11 is increased by screwing the adjusting screw 7 downwards, the downward rebound thrust of the spring 11 is increased, and the pressure relief value is adjusted accordingly.

Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. Direct action formula water conservancy relief valve, including valve body (1) and diaphragm piston (13), its characterized in that: the novel diaphragm valve is characterized in that a bolt (2) is arranged on the inner side of the valve body (1), a first nut (3) is connected to the outer side of the bolt (2), a water inlet (4) is formed in the side of the valve body (1), a water outlet (5) is formed in the other side of the valve body (1), a rotary table (6) is installed above the valve body (1), an adjusting screw (7) is fixed below the rotary table (6), a sealing ring (8) is arranged on the side of the adjusting screw (7), a hollow connecting rod (9) is arranged below the adjusting screw (7), a solid connecting rod (10) is arranged on the outer side of the hollow connecting rod (9), a spring (11) is arranged on the outer side of the solid connecting rod (10), a fixed block (12) is connected to the inner side of the spring (11), the fixed block (12) is fixed above a diaphragm piston (13), and a second nut (14) is connected below the diaphragm piston (13), and a sealing cover plate (15) is arranged at the side of the second nut (14).

2. The direct acting hydraulic pressure relief valve according to claim 1, wherein: the valve body (1) and the bolt (2) are arranged in a penetrating and penetrating mode, and the bolt (2) and the first nut (3) are arranged in a threaded connection mode.

3. The direct acting hydraulic pressure relief valve according to claim 1, wherein: the water inlet (4) and the valve body (1) are arranged in a nested connection mode, and the water inlet (4) and the water outlet (5) are arranged on the same straight line.

4. The direct acting hydraulic pressure relief valve according to claim 1, wherein: the rotary table (6) and the adjusting screw rod (7) are arranged in a welding mode, the adjusting screw rod (7) and the valve body (1) are arranged in a threaded connection mode, and the adjusting screw rod (7) and the sealing ring (8) are arranged in a tightly attached mode.

5. The direct acting hydraulic pressure relief valve according to claim 1, wherein: the hollow connecting rod (9) and the spring (11) are arranged in a mutually perpendicular mode, the spring (11) and the solid connecting rod (10) are arranged in a nested mode, and the spring (11) and the fixing block (12) are arranged in a penetrating mode.

6. The direct acting hydraulic pressure relief valve according to claim 1, wherein: the diaphragm piston (13) and the fixed block (12) are arranged in a welding mode, the diaphragm piston (13) and the solid connecting rod (10) are arranged in a nested mode, and the solid connecting rod (10) and the second nut (14) are arranged in a threaded connection mode.