CN217875318U - Hydraulic safety valve capable of adjusting setting pressure - Google Patents
Hydraulic safety valve capable of adjusting setting pressure Download PDFInfo
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- CN217875318U CN217875318U CN202222118377.XU CN202222118377U CN217875318U CN 217875318 U CN217875318 U CN 217875318U CN 202222118377 U CN202222118377 U CN 202222118377U CN 217875318 U CN217875318 U CN 217875318U
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Abstract
The utility model relates to a hydraulic safety valve capable of adjusting setting pressure, which comprises a central tube, a separating cylinder and a liquid storage cylinder, wherein the liquid storage cylinder is provided with an oil collecting tank and an overflow hole; the oil collecting tank and the overflow hole are respectively communicated with the oil collecting tank through an oil return pipe, so that the environment pollution caused by the overflow of hydraulic oil is prevented; the rain cover is fixedly installed on the installation plate through the nut and the adjusting screw rod, the depth of the partition barrel inserted into hydraulic oil is adjusted through the adjusting screw rod, the setting pressure value is adjusted, and the rain cover is used for working conditions with different rated pressures. Has the advantages of good environmental protection performance, wide applicable pressure range and the like.
Description
Technical Field
The utility model belongs to the valve field especially relates to a hydraulic safety valve. The utility model is suitable for a gas holder relief valve.
Background
The safety valve is arranged on the pressure container to control the pressure of the system, so that safety accidents caused by overpressure of the system are prevented. The hydraulic safety valve is arranged on the top of the gas storage tank to maintain internal pressure balance, and prevent the tank body from being damaged by overpressure generated in the tank body. The existing hydraulic safety valve generally comprises a central tube, a separating cylinder and a liquid storage cylinder which are concentrically arranged from inside to outside, the lower end of the central tube is connected with a flange at the top of a gas storage tank through a flange, hydraulic oil is filled in an annular cavity among the central tube, the separating cylinder and the liquid storage cylinder, the pressure of the gas storage tank is adjusted by utilizing the liquid level change in the annular cavity inside and outside the separating cylinder, an oil collecting tank is arranged at the upper end of the outer side of the liquid storage cylinder to prevent the hydraulic oil from being sprayed to the outside when overpressure occurs, an overflow hole is formed in the liquid storage cylinder on the outer side of the separating cylinder to limit the height of an oil level, and a set pressure value is set. However, the existing hydraulic relief valve has the following disadvantages: when the oil collecting tank is full of oil, the hydraulic oil overflows to the outside, so that hydraulic oil loss and environmental pollution are caused; the product setting pressure is fixed, the product setting pressure can only be used for the gas storage tank with specific pressure, and the product setting pressure is not suitable for the gas storage tanks with different rated pressures, and the applicable pressure range is small.
Disclosure of Invention
The utility model discloses to the shortcoming that prior art exists, provide one kind can prevent that hydraulic oil is excessive, it is adjustable to set pressure, and the environmental protection performance is good, applicable pressure scope is big adjustable hydraulic relief valve of setting pressure.
The technical proposal of the utility model comprises a central tube, a separating cylinder and a liquid storage cylinder; the lower end of the central tube is provided with a flange, and the upper end of the central tube penetrates into the inner cavity from the bottom surface of the liquid storage cylinder; the upper end of the separating cylinder is connected with the rain cover, and the lower end surface of the separating cylinder is higher than the bottom surface of the liquid storage cylinder; the central tube, the separating cylinder and the liquid storage cylinder are concentrically arranged from inside to outside, an inner annular cavity is formed between the separating cylinder and the central tube, an outer annular cavity is formed between the separating cylinder and the liquid storage cylinder, and an oil collecting groove is formed in the outer side of the upper end of the liquid storage cylinder; the method is characterized in that: an oil return hole is formed in the bottom of the oil collecting tank and communicated with the oil collecting tank through an oil return pipe; the rain cover is connected with the adjusting screw rod through a nut, the adjusting screw rod is fixedly arranged on the lower end face of the oil collecting tank through an adjusting seat and an installing plate, and a setting pressure indicating device is arranged between the rain cover and the installing plate.
Preferably, a liquid level sensor is arranged in an outer annular cavity between the liquid storage cylinder and the separating cylinder, and an output signal end of the liquid level sensor is connected to an output signal control end of the liquid level alarm.
Preferably, a liquid level display device is arranged at the lower part of the liquid storage cylinder.
Preferably, the liquid storage cylinder outside the separating cylinder is provided with an overflow hole, and the overflow hole is positioned at the level position of the hydraulic oil and is communicated with the oil collecting tank through an oil return pipe.
Compared with the prior art, the utility model beneficial effect be: the oil collecting tank and the overflow hole are respectively communicated with the oil collecting tank through an oil return pipe, so that the environment pollution caused by the overflow of hydraulic oil is prevented; the rain cover is fixedly installed on the installation plate through the nut and the adjusting screw rod, the depth of the partition barrel inserted into hydraulic oil is adjusted through the adjusting screw rod, the setting pressure value is adjusted, and the rain cover is used for working conditions with different rated pressures. Has the advantages of good environmental protection performance, wide applicable pressure range and the like.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a liquid level display device 1, a liquid storage cylinder 2, a partition cylinder 3, a dip rod 4, a rain cover 5, an adjusting screw 6, hydraulic oil 7, an overflow hole 8, a central cylinder 9, a discharge hole 10, an oil collecting tank 11 and an oil return hole 12.
Detailed Description
The hydraulic safety valve capable of adjusting setting pressure as shown in fig. 1 comprises a central tube 9, a separating cylinder 3 and a liquid storage cylinder 2; the lower end of the central tube 9 is provided with a flange, the upper ends of the flange gas storage tank and other pressure containers are connected by the flange, and the upper ends penetrate into the inner cavity from the bottom surface of the liquid storage cylinder 2; the upper end of the separating cylinder 3 is connected with the rain cover 5, the lower end surface is higher than the bottom surface of the liquid storage cylinder 2, an axial space is reserved between the lower end surface of the separating cylinder 3 and the bottom surface of the liquid storage cylinder 2, hydraulic oil 7 is injected into the liquid storage cylinder 2, and the lower end of the separating cylinder 3 is inserted into the hydraulic oil 7; the central tube 9, the separating cylinder 3 and the liquid storage cylinder 2 are concentrically arranged from inside to outside, an inner annular cavity is formed between the separating cylinder 3 and the central tube 9, an outer annular cavity is formed between the separating cylinder 3 and the liquid storage cylinder 2, the inner annular cavity and the outer annular cavity are mutually communicated through an axial space between the lower end surface of the separating cylinder 3 and the bottom surface of the liquid storage cylinder 2, an oil collecting groove 11 is arranged on the outer side of the upper end of the liquid storage cylinder 2, and hydraulic oil 7 overflowing from the outer annular cavity is collected in the oil collecting groove 11; the method is characterized in that: an oil return hole 12 is formed in the bottom of the oil collecting tank 11, the oil return hole 12 is communicated with the oil collecting tank through an oil return pipe, hydraulic oil in the oil collecting tank 11 is recovered into the oil collecting tank, and the situation that the oil collecting tank 11 is filled with the hydraulic oil to pollute the environment is prevented; the rain cover 5 is connected with the adjusting screw 6 through a nut, the adjusting screw 6 is fixedly installed on the lower end face of the oil collecting tank 11 through an adjusting seat and an installing plate, the height of the lower end face of the separating cylinder 3 inserted into hydraulic oil 7 is adjusted through the adjusting screw 6, a set pressure value is adjusted, a product can be adjusted according to the use pressure of a working condition, a set pressure indicating device is arranged between the rain cover 5 and the installing plate, and the set pressure indicating device is formed by mutually matching a set pressure indicating plate and a pointer which are installed on the installing plate and the rain cover 5 respectively. The bottom surface of the liquid storage cylinder 2 is provided with a discharge hole 10, hydraulic oil 7 can be discharged and the liquid storage cylinder 2 can be cleaned, and the rain cover 5 is provided with an oil filling port and an oil measuring scale 4 for filling oil and measuring the oil level in the liquid storage cylinder 2.
The technical scheme has the technical effects that when the inner cavities of the air storage tank or other pressure containers are over-pressurized, the oil surface of the inner annular cavity descends, the oil surface of the outer annular cavity ascends, gas is discharged through the outer annular cavity, the pressure in the pressure container is reduced, meanwhile, hydraulic oil overflowing from the outer annular cavity is collected in the oil collecting tank 11 and is recycled into the oil collecting tank through the oil return hole 12 and the oil return pipe, and the oil is prevented from overflowing to pollute the environment; the setting pressure value is changed by adjusting the adjusting screw 6, the setting pressure can be adjusted according to the working pressure of the pressure vessel, and the pressure application range is wide.
The outer annular cavity between the liquid storage cylinder 2 and the separation cylinder 3 is internally provided with a liquid level sensor, the output signal end of the liquid level sensor is connected to the output signal control end of a liquid level alarm, and when the liquid level in the outer annular cavity is lower than a set value, the liquid level alarm sends out an alarm signal to remind an operator to replenish hydraulic oil.
The technical effect produced by the technical characteristics is as follows: when the hydraulic oil is reduced due to overpressure discharge, the hydraulic oil is reminded to be supplemented in time, and the situation that the set pressure value is reduced due to forgetting to supplement the hydraulic oil is avoided, so that the stability and the accuracy of the set pressure are influenced.
The liquid level display device 1 is arranged on the side wall of the lower part of the liquid storage cylinder 2, and the oil level in the liquid storage cylinder 2 can be visually observed.
The technical effect produced by the technical characteristics is as follows: the oil measuring scale 4 can be omitted, and the observation of the oil level of the hydraulic oil is more visual and convenient.
An overflow hole 8 is arranged on the liquid storage cylinder 2 outside the separating cylinder 3, the overflow hole 8 is positioned at the position of the horizontal plane of the hydraulic oil, the height of the hydraulic oil 7 is controlled, and the hydraulic oil is recycled through the communication of an oil return pipe and an oil collecting tank.
The technical effect produced by the technical characteristics is as follows: prevent the hydraulic oil from overflowing to pollute the environment and improve the environmental protection performance.
Claims (4)
1. A hydraulic safety valve capable of adjusting setting pressure comprises a central tube (9), a separating cylinder (3) and a liquid storage cylinder (2); the lower end of the central tube (9) is provided with a flange, and the upper end of the central tube penetrates into the inner cavity from the bottom surface of the liquid storage cylinder (2); the upper end of the separating cylinder (3) is connected with a rain cover (5), and the lower end surface is higher than the bottom surface of the liquid storage cylinder (2); the central tube (9), the separating cylinder (3) and the liquid storage cylinder (2) are concentrically arranged from inside to outside, an inner annular cavity is formed between the separating cylinder (3) and the central tube (9), an outer annular cavity is formed between the separating cylinder (3) and the liquid storage cylinder (2), and an oil collecting groove (11) is arranged on the outer side of the upper end of the liquid storage cylinder (2); the method is characterized in that: an oil return hole (12) is formed in the bottom of the oil collecting tank (11), and the oil return hole (12) is communicated with the oil collecting tank through an oil return pipe; the rain cover (5) is connected with the adjusting screw (6) through a nut, the adjusting screw (6) is fixedly arranged on the lower end face of the oil collecting tank (11) through an adjusting seat and an installing plate, and a setting pressure indicating device is arranged between the rain cover (5) and the installing plate.
2. The set pressure adjustable hydraulic safety valve according to claim 1, wherein: a liquid level sensor is arranged in an outer annular cavity between the liquid storage cylinder (2) and the separation cylinder (3), and the output signal end of the liquid level sensor is connected to the output signal control end of the liquid level alarm.
3. The set pressure adjustable hydraulic safety valve according to claim 1 or 2, characterized in that: the side wall of the lower part of the liquid storage cylinder (2) is provided with a liquid level display device (1).
4. The set pressure adjustable hydraulic safety valve of claim 3, wherein: an overflow hole (8) is arranged on the liquid storage cylinder (2) outside the separating cylinder (3), and the overflow hole (8) is positioned at the horizontal position of the hydraulic oil and is communicated with the oil collecting tank through an oil return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222118377.XU CN217875318U (en) | 2022-08-12 | 2022-08-12 | Hydraulic safety valve capable of adjusting setting pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222118377.XU CN217875318U (en) | 2022-08-12 | 2022-08-12 | Hydraulic safety valve capable of adjusting setting pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217875318U true CN217875318U (en) | 2022-11-22 |
Family
ID=84077289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222118377.XU Active CN217875318U (en) | 2022-08-12 | 2022-08-12 | Hydraulic safety valve capable of adjusting setting pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217875318U (en) |
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2022
- 2022-08-12 CN CN202222118377.XU patent/CN217875318U/en active Active
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