CN111059333A - Gas pressure regulator - Google Patents
Gas pressure regulator Download PDFInfo
- Publication number
- CN111059333A CN111059333A CN201911415824.4A CN201911415824A CN111059333A CN 111059333 A CN111059333 A CN 111059333A CN 201911415824 A CN201911415824 A CN 201911415824A CN 111059333 A CN111059333 A CN 111059333A
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- CN
- China
- Prior art keywords
- cutting
- valve
- cover
- spring
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
Abstract
The invention discloses a gas pressure regulator, which comprises a valve body, wherein an O-shaped ring is arranged in the valve body, a cutting valve rod is arranged in the valve body, the upper end of the cutting valve rod is provided with an underpressure spring, an overpressure spring is arranged outside the underpressure spring, a lining plate is arranged below the overpressure spring, a cutting diaphragm is arranged outside the lining plate, a cutting spring and a pressing spring are arranged below the cutting valve rod, a spring base is arranged below the cutting spring, a cutting sleeve is arranged below the spring base, a cutting valve pad assembly is arranged outside the cutting sleeve, an elastic check ring for a shaft is arranged below the cutting valve pad assembly, a cutting cover is arranged on the valve body, an upper valve body cover and a lower valve body cover are arranged below the cutting cover, a shaft sleeve is arranged between the upper valve body cover and the cutting cover, the shaft sleeve is sleeved outside the cutting valve rod, a first guide sleeve is arranged outside the first guide sleeve, the first guide sleeve is fastened by a nut, a balance membrane lining is, the second guide sleeve is arranged outside the first guide sleeve, the valve body is provided with a valve port, and the cut-off valve rod is provided with a valve pad assembly.
Description
Technical Field
The invention relates to the technical field of universal mechanical equipment manufacturing, in particular to a low-pressure cut-off valve.
Background
The gas pressure regulator is commonly called a gas pressure reducing valve, and is equipment which reduces the system pressure to a certain range by automatically changing the throttling area of a throttling port of the pressure regulator and simultaneously needs to meet the downstream flow requirement. Generally, the method is classified into a direct action type and an indirect action type. When the downstream user has no flow demand, the valve core of the pressure regulator is close to the valve port, and the channel is reduced to limit the flow. When the downstream flow increases, the valve core is far away from the valve port, the opening degree of the valve core is increased, and the flow is increased. From the viewpoint of hydrodynamics, the pressure regulator is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the valve core pressure is balanced with the spring force by means of the regulation of the control and regulation system, and the valve core pressure is kept constant within a certain error range.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a gas pressure regulator, and in order to solve the problems, the invention provides the following scheme:
a gas pressure regulator comprises a valve body, wherein a plurality of O-shaped rings are arranged in the valve body, a cutting valve rod is arranged in the valve body, an under-pressure spring is arranged at the upper end of the cutting valve rod, an overpressure spring is arranged outside the under-pressure spring, a lining plate is arranged below the overpressure spring, a cutting diaphragm is arranged outside the lining plate, a cutting spring and a compression spring are arranged at the lower end of the cutting valve rod, a spring base is arranged below the cutting spring, a cutting sleeve is arranged below the spring base, a cutting valve pad assembly is arranged outside the cutting sleeve, an elastic check ring for a shaft is arranged below the cutting valve pad assembly, a cutting cover is arranged below the valve body, an upper valve body cover and a lower valve body cover are arranged below the cutting cover, a shaft sleeve is arranged between the upper valve body cover and the cutting cover and sleeved outside the cutting valve rod at the joint of, the valve comprises a valve body, a first guide sleeve, a balance film pressure plate, a balance diaphragm, a first guide sleeve, a second guide sleeve, a valve pad assembly and a nut, wherein the first guide sleeve is externally provided with a same-rod sleeve, the first guide sleeve is fastened by the nut, the outer side of the first guide sleeve is provided with the balance film lining, the balance film pressure plate is arranged below the balance film lining, the balance diaphragm is arranged between the balance film lining and the balance film pressure plate, the outer side of the first guide sleeve is provided with the second guide sleeve, the valve body is provided.
Further compared with the scheme, the cutting cover is divided into an upper cutting cover and a lower cutting cover.
Compared with the scheme, the upper cutting cover and the lower cutting cover are connected through bolts.
Compared with the scheme, the paper pad is arranged between the upper cutting cover and the lower cutting cover.
Further compared with the scheme, the valve gasket assembly comprises an O-shaped ring and a valve gasket pressing plate.
Compared with the scheme, the sleeve with the same rod is further provided with a lining.
Has the advantages that: designing a connecting block: the design of introducing the connecting block between valve body and lower valve gap makes the bolt hole site of valve body lower cover no longer directly be correlated with the valve body size, and by the connecting block decision, has reduced the kind of lower valve gap, has accomplished the commonality of a lower valve gap on multiple valve body, has reduced the kind of part, and easy to assemble saves the cost. Designing a pilot-operated valve gasket: a circle of small valve pad is arranged between the cut-off valve pad and the cut-off sleeve, when the valve needs to reset, the cut-off sleeve moves upwards, a spring between the cut-off sleeve and the cut-off valve pad firstly enables the cut-off valve pad and the cut-off sleeve to generate a gap, air flow passes through the gap, the pressure of the valve pad is balanced, and the reset becomes easy. The floating design of the stop valve cushion: the spring is added to play roles of buffering and floating, the impact force of the valve pad and the valve port is reduced, the valve pad is attached to the cutting edge of the valve port, and the cutting reliability is improved. Because the existence of machining tolerance and long-term use lead to the wearing and tearing of valve port blade, when the valve port was installed on the valve body under the actual circumstances, the blade can not be exactly on a horizontal plane. The valve pad adopts a floating structure to enable the valve pad to be attached to the valve port, and effective cut-off is completed by neglecting the situation. The outlet pressure is introduced into the upper cavity of the balance valve through the clearance between the pressing block, the guide sleeve and the valve rod, so that the outlet pressure is completely balanced, the pressure regulating performance is greatly improved, and larger flow is obtained within the pressure stabilizing precision range; the pressure at the pressure regulating valve pad is a transition region of inlet pressure and outlet pressure, the pressure distribution in the region can be changed violently along with the change of the opening degree of a valve port, the traditional pressure regulator focuses on the balance of the inlet pressure and ignores the balance of the outlet pressure of the transition region, the pressure regulating performance is greatly reduced, the design of the project achieves the complete balance of the outlet pressure of the transition region, and the flow rate of the product is larger than that of the product of the same type under the same voltage stabilization precision standard of AC 10.
Drawings
Fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is a perspective view of the present invention.
Detailed Description
A gas pressure regulator comprises a valve body 1.
The novel valve is characterized in that a plurality of O-shaped rings 2 are arranged in the valve body 1, a cutting valve rod 3 is arranged in the valve body 1, an under-pressure spring 4 is arranged at the upper end of the cutting valve rod 3, an overpressure spring 5 is arranged outside the under-pressure spring 4, a lining plate 6 is arranged below the overpressure spring 5, a cutting diaphragm 7 is arranged outside the lining plate 6, a cutting spring 8 and a compression spring 9 are arranged at the lower end of the cutting valve rod 3, a spring base 10 is arranged below the cutting spring 8, a cutting sleeve 11 is arranged below the spring base 10, a cutting valve pad assembly 12 is arranged outside the cutting sleeve 11, an axial elastic check ring 13 is arranged below the cutting valve pad assembly 12, a cutting cover is arranged on the valve body 1, a valve body upper cover 14 and a valve body lower cover 15 are arranged below the cutting cover, an axial sleeve 16 is arranged between the valve body upper cover 14 and the cutting cover, and, the outer side of the cut-off valve rod 3 is provided with a first guide sleeve 17, a same-rod sleeve 18 is arranged outside the first guide sleeve 17, the first guide sleeve 17 is provided with a nut 19 for fastening, the outer side of the first guide sleeve is provided with a balance film lining 20, a balance film pressing plate 21 is arranged below the balance film lining 20, a balance diaphragm 22 is arranged between the balance film lining 20 and the balance film pressing plate 21, the outer side of the first guide sleeve 17 is provided with a second guide sleeve 23, the valve body 1 is provided with a valve port 24, and the cut-off valve rod 3 is provided with a valve pad assembly 25 which is fastened through the nut 19.
The cutting cover is divided into an upper cutting cover 26 and a lower cutting cover 27, a paper pad 29 is arranged between the upper cutting cover 26 and the lower cutting cover 27 to play a protection role, and the upper cutting cover 26 and the lower cutting cover 27 are connected through a bolt 28.
The valve gasket assembly includes an O-ring 2 and a valve gasket pressure plate 30.
The sleeve 18 is provided with a bush 31.
Compared with the prior art, the invention has the beneficial effects that: designing a connecting block: the design of introducing the connecting block between valve body and lower valve gap makes the bolt hole site of valve body lower cover no longer directly be correlated with the valve body size, and by the connecting block decision, has reduced the kind of lower valve gap, has accomplished the commonality of a lower valve gap on multiple valve body, has reduced the kind of part, and easy to assemble saves the cost. Designing a pilot-operated valve gasket: a circle of small valve pad is arranged between the cut-off valve pad and the cut-off sleeve, when the valve needs to reset, the cut-off sleeve moves upwards, a spring between the cut-off sleeve and the cut-off valve pad firstly enables the cut-off valve pad and the cut-off sleeve to generate a gap, air flow passes through the gap, the pressure of the valve pad is balanced, and the reset becomes easy. The floating design of the stop valve cushion: the spring is added to play roles of buffering and floating, the impact force of the valve pad and the valve port is reduced, the valve pad is attached to the cutting edge of the valve port, and the cutting reliability is improved. Because the existence of machining tolerance and long-term use lead to the wearing and tearing of valve port blade, when the valve port was installed on the valve body under the actual circumstances, the blade can not be exactly on a horizontal plane. The valve pad adopts a floating structure to enable the valve pad to be attached to the valve port, and effective cut-off is completed by neglecting the situation. The outlet pressure is introduced into the upper cavity of the balance valve through the clearance between the pressing block, the guide sleeve and the valve rod, so that the outlet pressure is completely balanced, the pressure regulating performance is greatly improved, and larger flow is obtained within the pressure stabilizing precision range; the pressure at the pressure regulating valve pad is a transition region of inlet pressure and outlet pressure, the pressure distribution in the region can be changed violently along with the change of the opening degree of a valve port, the traditional pressure regulator focuses on the balance of the inlet pressure and ignores the balance of the outlet pressure of the transition region, the pressure regulating performance is greatly reduced, the design of the project achieves the complete balance of the outlet pressure of the transition region, and the flow rate of the product is larger than that of the product of the same type under the same voltage stabilization precision standard of AC 10.
Claims (6)
1. The gas pressure regulator comprises a valve body (1) and is characterized in that a plurality of O-shaped rings (2) are arranged in the valve body (1), a cutting-off valve rod (3) is arranged in the valve body (1), an under-pressure spring (4) is arranged at the upper end of the cutting-off valve rod (3), an overpressure spring (5) is arranged outside the under-pressure spring (4), a lining plate (6) is arranged below the overpressure spring (5), a cutting-off membrane (7) is arranged outside the lining plate (6), a cutting-off spring (8) and a compression spring (9) are arranged at the lower end of the cutting-off valve rod (7), a spring base (10) is arranged below the spring base (10), a cutting-off sleeve (11) is arranged below the spring base (10), a cutting-off valve pad assembly (12) is arranged outside the cutting-off sleeve (11), an axial elastic retainer ring (13) is arranged below, an upper valve body cover (14) and a lower valve body cover (15) are arranged below the cut-off cover, a shaft sleeve (16) is arranged between the upper valve body cover (14) and the cut-off cover, the shaft sleeve (16) is sleeved on the outer side of the cut-off valve rod (3) at the joint of the cut-off cover and the upper valve body cover (14), a first guide sleeve (17) is arranged on the outer side of the cut-off valve rod (3), a same-rod sleeve (18) is arranged outside the first guide sleeve (17), a nut (19) is arranged on the first guide sleeve (17) for fastening, a balance film lining (20) is arranged on the outer side of the first guide sleeve, a balance film pressing plate (21) is arranged below the balance film lining (20), a balance diaphragm (22) is arranged between the balance film lining (20) and the balance film pressing plate (21), a second guide sleeve (23) is arranged on the outer side of the first guide sleeve (17), a valve port (24) is arranged on the, the fastening is performed by a nut (19).
2. A gas pressure regulator according to claim 1, characterized in that said shut-off cover is divided into a shut-off upper cover (26) and a shut-off lower cover (27).
3. A gas pressure regulator according to claim 2, characterized in that said upper cut-off cover (26) and said lower cut-off cover (27) are connected by means of bolts (28).
4. A gas pressure regulator according to claim 2, characterized in that a paper gasket (29) is provided between the cut-off upper cover (26) and the cut-off lower cover (27).
5. A gas pressure regulator according to claim 1, wherein the valve gasket assembly comprises an O-ring (2) and a valve gasket pressure plate (30).
6. A gas pressure regulator according to claim 1, characterized in that said stem-like sleeve (18) is provided with a bushing (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415824.4A CN111059333A (en) | 2019-12-31 | 2019-12-31 | Gas pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415824.4A CN111059333A (en) | 2019-12-31 | 2019-12-31 | Gas pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059333A true CN111059333A (en) | 2020-04-24 |
Family
ID=70305790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911415824.4A Pending CN111059333A (en) | 2019-12-31 | 2019-12-31 | Gas pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059333A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989060A (en) * | 1975-05-29 | 1976-11-02 | Textron, Inc. | Gas pressure regulator |
| CN104197055A (en) * | 2014-08-14 | 2014-12-10 | 大丰市大昌燃气设备有限公司 | Fuel gas pressure regulator with automatic closing function and using method thereof |
| CN104197026A (en) * | 2014-08-19 | 2014-12-10 | 大丰市燃气设备有限责任公司 | Balancing floating combined structure of fuel gas pressure regulator |
| CN204512570U (en) * | 2014-12-30 | 2015-07-29 | 特瑞斯能源装备股份有限公司 | The Equilibrator of pressure governor |
| CN104976395A (en) * | 2015-07-07 | 2015-10-14 | 特瑞斯（北京）流体科技有限公司 | Gas pressure regulator |
-
2019
- 2019-12-31 CN CN201911415824.4A patent/CN111059333A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3989060A (en) * | 1975-05-29 | 1976-11-02 | Textron, Inc. | Gas pressure regulator |
| CN104197055A (en) * | 2014-08-14 | 2014-12-10 | 大丰市大昌燃气设备有限公司 | Fuel gas pressure regulator with automatic closing function and using method thereof |
| CN104197026A (en) * | 2014-08-19 | 2014-12-10 | 大丰市燃气设备有限责任公司 | Balancing floating combined structure of fuel gas pressure regulator |
| CN204512570U (en) * | 2014-12-30 | 2015-07-29 | 特瑞斯能源装备股份有限公司 | The Equilibrator of pressure governor |
| CN104976395A (en) * | 2015-07-07 | 2015-10-14 | 特瑞斯（北京）流体科技有限公司 | Gas pressure regulator |
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