CN108679279A - Inner safety-valve - Google Patents
Inner safety-valve Download PDFInfo
- Publication number
- CN108679279A CN108679279A CN201810931253.9A CN201810931253A CN108679279A CN 108679279 A CN108679279 A CN 108679279A CN 201810931253 A CN201810931253 A CN 201810931253A CN 108679279 A CN108679279 A CN 108679279A
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- CN
- China
- Prior art keywords
- piston rod
- piston
- valve body
- spring
- flap
- 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.)
- Granted
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of inner safety-valves, including valve body, flap and spring pressure setting device；It is characterized in that：Flap uses opening up cylinder mode, cylinder upper surface to be equipped with the valve clack sealing surface for forming sealing with sealing surface of seat, and spring pressure setting device is mounted on cylinder bore；The spring pressure setting device includes adjusting set, piston, piston rod, spring, adjusting set endoporus coordinates with piston rod periphery dynamic sealing, piston upper surface, adjusting set lower face, piston rod periphery, flap cylinder inner wall between constitute closed spring cavity, spring is mounted in spring cavity；Pressure chamber is constituted between piston lower surface and the bottom of cylinder of flap, which is connected to by the pressure guide hole on piston rod center and valve body with tank inner chamber, and spring cavity on the outside of spiracle on piston rod and valve body and tank body by being connected to.Have many advantages, such as that service life is long, set-pressure is accurate, water hammer is small, sealing performance is reliable, installation space is small.
Description
Technical field
The invention belongs to valve fields, more particularly, to a kind of inner safety-valve.The present invention is suitable at the top of groove tank car
Safety valve.
Background technology
Inner safety-valve is mostly installed at the top of groove tank car, and the main parts size of safety valve is all mounted on tank interior.
Existing inner safety-valve be mounted on groove tank car in use, the main parts sizes such as its spring all directly it is exposed in the medium, be easy
Corroded by medium, has the shortcomings that service life is short, set-pressure is inaccurate；Meanwhile the safety valve of the structure, flap
It is placed in outside tank body, needs larger installation space, and flap is easy to be destroyed by external force collision, influences service life；And it opens
Water hammer or water hammer are generated during closing, generates larger vibration, and vibration, which is hit, is easily damaged sealing surface, influences leakproofness
Energy.
Invention content
For technological deficiency existing in the prior art, the present invention provides a kind of, set-pressure standard long with service life
Really and installation space is small, opens and closes water hammer and inner safety-valve with small vibration, that sealing reliability is good.
Technical scheme of the present invention includes valve body, flap and spring pressure setting device, and valve body top is equipped with to be connected with tank body
The flange connect, valve body lower end face are equipped with sealing surface of seat, and valve inner has outlet；It is characterized in that：Flap is using opening court
On cylinder mode, cylinder upper surface is equipped with the valve clack sealing surface that sealing is formed with sealing surface of seat, and spring pressure adjusts dress
It sets and is mounted on cylinder bore；The spring pressure setting device includes adjusting set, piston, piston rod, spring, in piston upper surface
The heart and the fixed seal connection of piston rod one end, the piston rod other end and valve body fixed seal connection, outside piston face and flap
Cylinder inner wall dynamic sealing coordinates, and connection is sealed against each other using screw thread between adjusting set periphery and the cylinder inner wall of flap, adjusts
Endoporus and piston rod periphery dynamic sealing is covered to coordinate, piston upper surface, adjusting set lower face, piston rod periphery, flap circle
Closed spring cavity is constituted between cylinder inner wall, spring is mounted in spring cavity；Between piston lower surface and the bottom of cylinder of flap
Pressure chamber is constituted, which is connected to by the pressure guide hole on piston rod center and valve body with tank inner chamber, and spring cavity passes through work
It is connected on the outside of spiracle and tank body on stopper rod and valve body.
Preferably, piston rod is fixedly connected with the valve body by screw rod, and screw rod passes through on piston and piston rod upper end and valve body
Pressure guide hole inner thread connects, and sealing ring is arranged between the connecting end surface between piston rod and valve body, pitch is formed with company
The through-hole of pressure guide hole and pressure chamber on port valve body.
Preferably, piston uses integral structure with piston rod, and valve inner, which is equipped with, reinforces shin.
The advantage of the invention is that：In use, spring will not contact medium, be effectively protected spring from corruption
Erosion has service life long, the accurate advantage of set-pressure；During open and close, water hammer or water attack not will produce
Phenomenon avoids generating vibration, to which with avoiding valve from generating leakage, sealing surface is from impact damage；The valve is removed to be connected with outside
Outside the flange connect, remaining parts is completely disposed inside container, has installation space small, is destroyed from external force during use
The advantages of.
Description of the drawings
Fig. 1 is the structural schematic diagram of closed state of the present invention.
Fig. 2 is the structural schematic diagram of open state of the present invention.
Specific implementation mode
Inner safety-valve as shown in Figure 1, including valve body 1, flap 2 and spring pressure setting device, 1 top of valve body are set
There are the flange being connect with tank body, 1 lower face of valve body to be equipped with sealing surface of seat, 1 inside of valve body has outlet；It is characterized in that：Valve
Valve 2 uses opening up cylinder mode, cylinder upper surface to be equipped with the valve clack sealing surface for forming sealing with sealing surface of seat, valve
Seat sealing surface uses rubber seal ring, spring pressure setting device to be mounted on cylinder bore；The spring pressure setting device packet
Include adjusting set 3, piston 6, piston rod 9, spring 5,6 upper surface center of piston and 9 one end fixed seal connection of piston rod, piston rod
9 other ends and 1 fixed seal connection of valve body, 6 periphery of piston and the cylinder inner wall dynamic sealing of flap 2 coordinate, 3 outer circle of adjusting set
Connection, 3 endoporus of adjusting set and 9 periphery dynamic sealing of piston rod are sealed against each other using screw thread between face and the cylinder inner wall of flap 2
Cooperation, 6 upper surface of piston, 3 lower face of adjusting set, 9 periphery of piston rod, flap 2 cylinder inner wall between constitute closed bullet
Spring chamber 4, spring 5 are mounted in spring cavity 4, by adjusting the screwing position between adjusting set 3 and 2 cylinder inner wall of flap,
Set the set-pressure of spring pressure setting device；Pressure chamber 7 is constituted between 6 lower face of piston and the bottom of cylinder of flap 2, it should
Pressure chamber 7 is connected to by the pressure guide hole 10 on 9 center of piston rod and valve body 1 with tank inner chamber, and pressure medium in tank body is introduced
Into pressure chamber 7, when pressure medium is more than set-pressure in tank body, pressure medium compressed spring 5 pushes flap in pressure chamber 7
2 move down, and 2 sealing surface of flap is made to lift off a seat sealing surface, and pressure medium is released to the outlet of valve body 1 in tank body, protects tank body
Pressure security, as shown in Figure 2.Spring cavity 4 on the outside of spiracle 11 on piston rod 9 and valve body 1 and tank body by being connected to.
Piston rod 9 is fixedly connected by screw rod 8 with valve body 1, and screw rod 8 passes through on piston 6 and 9 upper end of piston rod and valve body 1
10 inner thread of pressure guide hole connects, and sealing ring is arranged between the connecting end surface between piston rod 9 and valve body 1, by piston 6 and lives
Stopper rod 9 and 1 fixed seal connection of valve body, 9 center of screw rod are formed with the through-hole of the pressure guide hole 10 and pressure chamber 7 on connection valve body 1.
Piston 6 uses integral structure, valve body 1 to be internally provided with reinforcement shin with piston rod 9, and piston rod 9 is connected to reinforcing rib
Center, pressure guide hole 10 and spiracle 11 are located in reinforcing rib, are exported for valve body 1 between adjacent two reinforcing ribs.
Claims (3)
1. a kind of inner safety-valve, including valve body（1）, flap（2）With spring pressure setting device, valve body（1）Top is equipped with
The flange being connect with tank body, valve body（1）Lower face is equipped with sealing surface of seat；It is characterized in that：Flap（2）Using opening up circle
Core structure, cylinder upper surface are equipped with the valve clack sealing surface that sealing is formed with sealing surface of seat, the installation of spring pressure setting device
In cylinder bore；The spring pressure setting device includes adjusting set（3）, piston（6）, piston rod（9）, spring（5）, piston
（6）Upper surface center and piston rod（9）One end fixed seal connection, piston rod（9）The other end and valve body（1）Fixing seal connects
It connects, piston（6）Periphery and flap（2）Cylinder inner wall dynamic sealing cooperation, adjusting set（3）Periphery and flap（2）Cylinder
Connection, adjusting set are sealed against each other using screw thread between inner wall（3）Endoporus and piston rod（9）Periphery dynamic sealing coordinates, piston（6）
Upper surface, adjusting set（3）Lower face, piston rod（9）Periphery, flap（2）Cylinder inner wall between constitute closed spring cavity
（4）, spring（5）In spring cavity 4；Piston（6）Lower face and flap（2）Bottom of cylinder between constitute pressure chamber（7）,
The pressure chamber（7）Pass through piston rod（9）Center and valve body（1）On pressure guide hole（10）It is connected to tank inner chamber, when being situated between in tank body
When matter pressure is more than set-pressure, spring cavity（4）Pass through piston rod（9）And valve body（1）On spiracle（11）With tank body outside
Connection.
2. inner safety-valve according to claim 1, it is characterized in that piston rod（9）Pass through screw rod（8）With valve body（1）Gu
Fixed connection, screw rod（8）Across piston（6）And piston rod（9）Upper end and valve body（1）On pressure guide hole（10）Inner thread connects,
In piston rod（9）With valve body（1）Between connecting end surface between sealing ring, screw rod are set（9）Center is formed with connection pressure guide hole
（10）With pressure chamber（7）Through-hole.
3. inner safety-valve according to claim 1 or 2, it is characterized in that piston（6）With piston rod（9）Using integrated knot
Structure, valve body（1）It is internally provided with reinforcement shin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931253.9A CN108679279B (en) | 2018-08-15 | 2018-08-15 | Built-in safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810931253.9A CN108679279B (en) | 2018-08-15 | 2018-08-15 | Built-in safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108679279A true CN108679279A (en) | 2018-10-19 |
| CN108679279B CN108679279B (en) | 2023-09-15 |
Family
ID=63815405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810931253.9A Active CN108679279B (en) | 2018-08-15 | 2018-08-15 | Built-in safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108679279B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469701A (en) * | 2019-09-09 | 2019-11-19 | 浙江嘉隆机械设备有限公司 | Petroleum vapor recovery valve with respiratory function |
| CN111288192A (en) * | 2020-04-10 | 2020-06-16 | 蓝晶晶 | Pilot operated safety valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5050636A (en) * | 1990-10-17 | 1991-09-24 | Kawasaki Jukogyo Kabushiki Kaisha | Relief valve |
| CN2329111Y (en) * | 1998-06-18 | 1999-07-14 | 顾青莲 | Valve control sealed type seal pressure reducing valve for lead accumulator |
| US20040134539A1 (en) * | 2001-03-27 | 2004-07-15 | Horst Ressel | Pressure limiting valve for fuel injection devices |
| CN2937588Y (en) * | 2006-04-17 | 2007-08-22 | 中煤北京煤矿机械有限责任公司 | Safety valve |
| CN201884735U (en) * | 2010-12-13 | 2011-06-29 | 永一阀门集团有限公司 | Built-in safety valve |
| US20140069529A1 (en) * | 2011-06-08 | 2014-03-13 | Kawasaki Jukogyo Kabushiki Kaisha | Relief valve |
| CN204127411U (en) * | 2014-09-10 | 2015-01-28 | 天正阀门有限公司 | Differential pressure type safety valve |
| CN205605900U (en) * | 2015-12-11 | 2016-09-28 | 河北光德流体控制有限公司 | Positive negative pressure relief valve of low level spring |
| CN108050282A (en) * | 2017-11-30 | 2018-05-18 | 徐州青枣阀门科技有限公司 | Pressure reducing valve |
-
2018
- 2018-08-15 CN CN201810931253.9A patent/CN108679279B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5050636A (en) * | 1990-10-17 | 1991-09-24 | Kawasaki Jukogyo Kabushiki Kaisha | Relief valve |
| CN2329111Y (en) * | 1998-06-18 | 1999-07-14 | 顾青莲 | Valve control sealed type seal pressure reducing valve for lead accumulator |
| US20040134539A1 (en) * | 2001-03-27 | 2004-07-15 | Horst Ressel | Pressure limiting valve for fuel injection devices |
| CN2937588Y (en) * | 2006-04-17 | 2007-08-22 | 中煤北京煤矿机械有限责任公司 | Safety valve |
| CN201884735U (en) * | 2010-12-13 | 2011-06-29 | 永一阀门集团有限公司 | Built-in safety valve |
| US20140069529A1 (en) * | 2011-06-08 | 2014-03-13 | Kawasaki Jukogyo Kabushiki Kaisha | Relief valve |
| CN204127411U (en) * | 2014-09-10 | 2015-01-28 | 天正阀门有限公司 | Differential pressure type safety valve |
| CN205605900U (en) * | 2015-12-11 | 2016-09-28 | 河北光德流体控制有限公司 | Positive negative pressure relief valve of low level spring |
| CN108050282A (en) * | 2017-11-30 | 2018-05-18 | 徐州青枣阀门科技有限公司 | Pressure reducing valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469701A (en) * | 2019-09-09 | 2019-11-19 | 浙江嘉隆机械设备有限公司 | Petroleum vapor recovery valve with respiratory function |
| CN111288192A (en) * | 2020-04-10 | 2020-06-16 | 蓝晶晶 | Pilot operated safety valve |
| CN111288192B (en) * | 2020-04-10 | 2021-08-24 | 杭州普昌科技有限公司 | Pilot operated safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108679279B (en) | 2023-09-15 |
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