CN105757302A - Safety valve capable of precisely regulating pressure - Google Patents
Safety valve capable of precisely regulating pressure Download PDFInfo
- Publication number
- CN105757302A CN105757302A CN201610285718.9A CN201610285718A CN105757302A CN 105757302 A CN105757302 A CN 105757302A CN 201610285718 A CN201610285718 A CN 201610285718A CN 105757302 A CN105757302 A CN 105757302A
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- CN
- China
- Prior art keywords
- valve
- spring base
- spring
- cylinder
- relief valve
- 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.)
- Pending
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Classifications
-
- 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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
- F16K17/065—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure with differential piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention provides a safety valve capable of precisely regulating pressure. The safety valve comprises a valve cap, a pressure regulating cylinder, a valve rod and a spring, wherein the valve cap comprises two vertical plates and a horizontal plate, the lower ends of the two vertical plates are fixedly connected with the upper end of a valve body, the horizontal plate is erected at the upper ends of the two vertical plates, and the upper end of a spring seat penetrates through the horizontal plate and is fixedly connected with a connector; a cylinder body of the pressure regulating cylinder is fixed above the valve cap, and a piston rod of the pressure regulating cylinder is fixedly connected with the spring seat through the connector; the valve rod is placed in the valve cap, and the upper end of the valve rod is in sliding connection with the spring seat; the spring sleeves the valve rod, and the upper end of the spring is abutted against the lower end of the spring seat. The safety valve disclosed by the invention is simple in structure and convenient to use. Rapid pressure regulation can be performed through the pressure regulating cylinder; besides, under the action of a positioning plug, the spring seat cannot rotate, so that the sealing property of the safety valve is guaranteed, and the service life is prolonged. The pressure regulating cylinder is controlled through a control box, so that time and labor are saved, besides, the regulating precision is high, and the safety of the safety valve is improved.
Description
Technical field
The invention belongs to valve field, especially relate to a kind of relief valve.
Background technology
In prior art, if relief valve is carried out pressure regulation, assembly crewman need to be relied on to rotate boosting-rod or adjustable wrench carrys out convergent-divergent spring, adjust valve release pressure.Which takes up room relatively big when implementing, and wastes time and energy；In high set-pressure situation, in valve body, the transfer of flap can pull sealing surface；Can cause in pressure regulation process that spring generation torsion even distorts makes the skew of valve sealing force cause valve leak.
Summary of the invention
In view of this, it is contemplated that propose a kind of can the relief valve of precise pressure regulation, to solve in prior art, relief valve pressure regulation process wastes time and energy, and relief valve easily causes the problem of damage.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of can the relief valve of precise pressure regulation, including bonnet, it is fixed in the upper end of valve body；Voltage regulation cylinder, its cylinder body is fixed on the top of bonnet, and its piston rod is affixed by adapter and spring base；Valve rod, it is placed in bonnet, and upper end and spring base are slidably connected；Spring, it is sleeved on the outside of valve rod, and the lower end of upper end and spring base offsets；Control chamber, it is connected to pressure pump and medium tank, and medium tank is connected with described voltage regulation cylinder.
Further, described bonnet includes two stringer boards and a transverse slat；Two stringer boards are parallel to each other, and its lower end is affixed with the upper end of valve body by flange；Transverse slat is set up in the upper end of two stringer boards, and the upper end of described spring base is affixed through transverse slat and adapter.
Further, the external diameter of described spring is less than the distance between two stringer boards.
Further, the sidewall of described spring base being connected with pilot pin, it is placed in the outside of described stringer board, and the sidewall of the sidewall of pilot pin and stringer board offsets.
Further, the lower end of described spring base is provided with pilot hole, and the upper end of valve rod is stretched in pilot hole, and is slidably connected along pilot hole and spring base.
Further, the piston rod of described spring, spring base, valve rod and voltage regulation cylinder, four is coaxial.
Further, described voltage regulation cylinder is hydraulic cylinder, and pressure pump is oil pump, and medium tank is built with hydraulic oil.
Relative to prior art, of the present invention can the relief valve of precise pressure regulation have the advantage that
Of the present invention can the relief valve of precise pressure regulation, simple in construction, easy to use.By voltage regulation cylinder, the present invention can be carried out rapid pressure adjusting；Meanwhile, under the effect of pilot pin, spring base will not rotate, it is ensured that the sealing of the present invention, improves service life.By control chamber, voltage regulation cylinder is controlled, not only time saving and energy saving, and degree of regulation is high, improves the safety of the present invention.
Accompanying drawing explanation
The accompanying drawing constituting the part of the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 be described in the embodiment of the present invention can the front view of relief valve of precise pressure regulation.
Description of reference numerals:
1-valve body；2-spring；3-bonnet；4-valve rod；5-spring base；51-pilot pin；6-voltage regulation cylinder；7-medium tank；8-control chamber；9-presses pump；10-adapter.
Detailed description of the invention
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only for descriptive purposes, and it is not intended that indicate or imply relative importance or the implicit quantity indicating indicated technical characteristic.Thus, the feature defining " first ", " second " etc. can express or implicitly include one or more these features.In describing the invention, except as otherwise noted, " multiple " are meant that two or more.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, for instance, it is possible to it is fixing connection, it is also possible to be removably connect, or connect integratedly；Can be mechanically connected, it is also possible to be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, it is possible to be the connection of two element internals.For the ordinary skill in the art, it is possible to understand above-mentioned term concrete meaning in the present invention by concrete condition.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Such as Fig. 1, the present invention propose a kind of can the relief valve of precise pressure regulation, including bonnet 3, it is fixed in the upper end of valve body 1；Voltage regulation cylinder 6, its cylinder body is fixed on the top of bonnet 3, and its piston rod is affixed by adapter 10 and spring base 5；Valve rod 4, it is placed in bonnet 3, and upper end and spring base 5 are slidably connected；Spring 2, it is sleeved on the outside of valve rod 4, and the lower end of upper end and spring base 5 offsets；Control chamber 8, it is connected to pressure pump 9 and medium tank 7, and medium tank 7 is connected with described voltage regulation cylinder 6.
Above-mentioned bonnet 3 includes two stringer boards and a transverse slat；Two stringer boards are parallel to each other, and its lower end is affixed with the upper end of valve body 1 by flange；Transverse slat is set up in the upper end of two stringer boards, and the upper end of described spring base 5 is affixed through transverse slat and adapter 10.Bonnet 3 is open structure, is not only beneficial to maintenance, and the heat radiation of the present invention is very helpful.
The external diameter of above-mentioned spring 2 is less than the distance between two stringer boards.Ensure there is certain gap between spring 2 and bonnet 3 so that the load of spring 2 is unaffected, it is ensured that the stability of spring 2.
Being connected with pilot pin 51 on the sidewall of above-mentioned spring base 5, it is placed in the outside of described stringer board, and the sidewall of the sidewall of pilot pin 51 and stringer board offsets.This structure makes spring base 5 will not rotate in pressure regulation process, therefore, also would not make valve rod 4 transfer.It is thus possible to reduce the abrasion of valve body 1 inner sealing surface, play a protective role.
The lower end of above-mentioned spring base 5 is provided with pilot hole, and the upper end of valve rod 4 is stretched in pilot hole, and is slidably connected along pilot hole and spring base 5.
The piston rod of above-mentioned spring 2, spring base 5, valve rod 4 and voltage regulation cylinder 6, four is coaxial.
Above-mentioned voltage regulation cylinder 6 is hydraulic cylinder, and pressure pump 9 is oil pump, and medium tank 7 is built with hydraulic oil.
When the present invention is carried out pressure regulation by needs, start pressure pump 9 by control chamber 8.Under the effect of pressure pump 9, the hydraulic oil in medium tank 7 enters in voltage regulation cylinder 6 so that the piston rod of voltage regulation cylinder 6 stretches accordingly.The piston rod band flexible spring seat 5 of voltage regulation cylinder 6 rises or falls, thus the rate of tension of spring 2 is adjusted, to reach the purpose of pressure regulation.
Of the present invention can the relief valve of precise pressure regulation, simple in construction, easy to use.By voltage regulation cylinder 6, the present invention can be carried out rapid pressure adjusting；Meanwhile, under the effect of pilot pin 51, spring base 5 will not rotate, it is ensured that the sealing of the present invention, improves service life.By control chamber 8, voltage regulation cylinder 6 is controlled, not only time saving and energy saving, and degree of regulation is high, improves the safety of the present invention.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (7)
1. one kind can the relief valve of precise pressure regulation, it is characterised in that including:
Bonnet (3), it is fixed in the upper end of valve body (1)；
Voltage regulation cylinder (6), its cylinder body is fixed on the top of bonnet (3), and its piston rod is affixed by adapter (10) and spring base (5)；
Valve rod (4), it is placed in bonnet (3), and upper end and spring base (5) are slidably connected；
Spring (2), it is sleeved on the outside of valve rod (4), and the lower end of upper end and spring base (5) offsets；
Control chamber (8), it is connected to pressure pump (9) and medium tank (7), and medium tank (7) is connected with described voltage regulation cylinder (6).
2. according to claim 1 can the relief valve of precise pressure regulation, it is characterised in that: described bonnet (3) includes two stringer boards and a transverse slat；Two stringer boards are parallel to each other, and its lower end is affixed with the upper end of valve body (1) by flange；Transverse slat is set up in the upper end of two stringer boards, and the upper end of described spring base (5) is affixed through transverse slat and adapter (10).
3. according to claim 2 can the relief valve of precise pressure regulation, it is characterised in that: the external diameter of described spring (2) is less than the distance between two stringer boards.
4. according to claim 2 can the relief valve of precise pressure regulation, it is characterized in that: the sidewall of described spring base (5) is connected with pilot pin (51), it is placed in the outside of described stringer board, and the sidewall of the sidewall of pilot pin (51) and stringer board offsets.
5. according to claim 1 can the relief valve of precise pressure regulation, it is characterized in that: the lower end of described spring base (5) is provided with pilot hole, the upper end of valve rod (4) is stretched in pilot hole, and is slidably connected along pilot hole and spring base (5).
6. according to claim 1 can the relief valve of precise pressure regulation, it is characterised in that: the piston rod of described spring (2), spring base (5), valve rod (4) and voltage regulation cylinder (6), four is coaxial.
7. according to claim 1 can the relief valve of precise pressure regulation, it is characterised in that: described voltage regulation cylinder (6) is hydraulic cylinder, and pressure pump (9) is oil pump, and medium tank (7) is built with hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285718.9A CN105757302A (en) | 2016-04-29 | 2016-04-29 | Safety valve capable of precisely regulating pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610285718.9A CN105757302A (en) | 2016-04-29 | 2016-04-29 | Safety valve capable of precisely regulating pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105757302A true CN105757302A (en) | 2016-07-13 |
Family
ID=56323336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610285718.9A Pending CN105757302A (en) | 2016-04-29 | 2016-04-29 | Safety valve capable of precisely regulating pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757302A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879617A (en) * | 2021-01-27 | 2021-06-01 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
-
2016
- 2016-04-29 CN CN201610285718.9A patent/CN105757302A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879617A (en) * | 2021-01-27 | 2021-06-01 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
| CN112879617B (en) * | 2021-01-27 | 2021-12-10 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |
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| WD01 | Invention patent application deemed withdrawn after publication |