CN105090574B - A kind of pressure-sensitive switch for being adapted to high-temperature gas - Google Patents
A kind of pressure-sensitive switch for being adapted to high-temperature gas Download PDFInfo
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- CN105090574B CN105090574B CN201510520451.2A CN201510520451A CN105090574B CN 105090574 B CN105090574 B CN 105090574B CN 201510520451 A CN201510520451 A CN 201510520451A CN 105090574 B CN105090574 B CN 105090574B
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- Prior art keywords
- pressure
- push rod
- spring
- valve element
- bonnet
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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
- F16K17/003—Safety valves; Equalising valves, e.g. pressure relief valves reacting to pressure and temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The invention discloses a kind of pressure-sensitive switch for being adapted to high-temperature gas, belongs to sensor (control) field；In the prior art, mechanical pressure reducer realizes that the design of decompression, processing improvement difficulty are larger at high temperature, is then easier to realize using the depressurized system with pressure sensitive signaling switch；Pressure-sensitive switch provided by the invention includes valve body (1), valve element (4), bonnet (5), push rod (6), spring (8), upper lid (9), support (10), microswitch (11), realize the pressure change of sensing high-temperature gas, signal source is provided for automatic control system, and there is easily assembly and disassembly, small volume, light weight, wide adaptability simple in construction.
Description
Technical field
The invention belongs to sensor (control) field, more particularly, to a kind of pressure sensitive for being adapted to high-temperature gas
Switch.
Background technology
In high-temperature gas attitude control technical field, relative to traditional posture control system, being resistant to 1000 DEG C of high temperature turns into all zero
The maximum problem of part.The decompression of normal temperature posture control system is completed by mechanical pressure reducer, and mechanical pressure reducer is complicated,
Decompression is realized at high temperature, and design, processing improvement difficulty are larger, therefore reduce design and difficult processing using depressurized system
Degree, realize that high-temperature gas depressurizes, high-temperature pressure-reduction system needs to sense the pressure-sensitive switch of high-temperature gas as automatically controlling
Control signal source.
The content of the invention
For problems of the prior art, the application provides a kind of pressure sensitive for being adapted to high-temperature gas and opened
Close, wherein being studied and being related to by the concrete structure to valve body, valve element and microswitch and its set-up mode, mutually should be able to
It is enough that pressure sensitive is realized in more compact construction, it is easier to provide signal source for automatic control system with existing product,
The advantages that being provided simultaneously with small volume, light weight, it is therefore particularly suitable for the application scenario of high-temperature gas.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of feeling of stress for being adapted to high-temperature gas
Inductive switch, it is characterised in that the switch includes valve body (1), valve element (4), bonnet (5), push rod (6), spring (8), upper lid
(9), support (10), microswitch (11)；
In piston cylinder and hot channel that the valve element (4) is formed mounted in the valve body (1) and the bonnet (5), institute
State valve element (4) one end and carry piston head, the piston head of the valve element 4 is mounted in the piston cylinder, the other end of the valve element (4)
Docked with the push rod (6), the spring (8) is enclosed on the push rod (6)；
The support (10) is arranged on the upper lid (9), and the microswitch (11) is fixed on the support (10).
Preferably, the piston cylinder and the piston head are by size Control, with the bonnet (5) after assembling to piston
Stroke carry out spacing, prevent the microswitch that is delivered to of excessive forces, damage switch.
Preferably, the other end of the valve element (4) is bulb, the major diameter end face of the bulb and the push rod (6)
Spherical arc row globulate is docked, and forms automatic capturing function.
Preferably, the bulb of the valve element (4), the major diameter end face of the push rod (6), is enclosed on the push rod (6) and institute
The heat insulating mattress (7) of the major diameter end face fitting of push rod (6) is stated, is enclosed on the spring (8) that the push rod (6) is pressed on heat insulating mattress
In the installation cavity of the bonnet (5).
Preferably, the valve body (1), the bonnet (5), the preferred high temperature alloy of material of the valve element (4) or high titanium close
Gold, the preferred high temperature alloy of spring material；The described preferably high silica phenolic resin of heat insulating mattress (7) material.
Preferably, described push rod (6) small-diameter sized one end is through the reserved centre pilot hole of the upper lid (9), solid
Immediately below the contact for the microswitch (11) being scheduled on the support (10).
In general, according to above-mentioned technical concept of the invention compared with prior art, it is excellent mainly to possess following technology
Point：
1st, high-temperature gas pressure-sensitive switch of the invention realizes senses gas pressure at high temperature, while is automatic control
System processed provides signal source；
2nd, high-temperature gas pressure-sensitive switch of the invention can be fitted by changing the diameter dimension of piston cylinder and piston head
The pressure sensitive of high-temperature gas under different pressures is answered, there is universal adaptability.
3rd, high-temperature gas pressure-sensitive switch of the invention has an easy assembly and disassembly simple in construction, and small volume, it is in light weight,
The features such as high temperature resistant.
Brief description of the drawings
Fig. 1 is the high-temperature gas pressure-sensitive switch overall structure sectional view constructed by the preferred embodiment of the present invention.
In all of the figs, identical reference is used for representing identical element or structure, wherein：1-valve body, 2- are moved
Sealing ring, 3- sealing gaskets, 4- valve elements, 5- bonnets, 6- push rods, 7- heat insulating mattress, 8- springs, lid, 10- supports, 11- fine motions are opened on 9-
Close, the 12- protective plates δ-piston stroke Φ-spherical docking F of piston diameter A- locating grooves B-1- gas pressure F2- initial tension of spring
P- gas pressure △ P- gas pressure changes.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
As shown in figure 1, high-temperature gas pressure-sensitive switch provided by the invention includes valve body 1, dynamic seal ring 2, sealing gasket
3rd, valve element 4, bonnet 5, push rod 6, heat insulating mattress 7, spring 8, upper lid 9, support 10, microswitch 11, protective plate 12.
The one end of valve body 1 carries piston cylinder and detent, and the other end is threaded inlet interface；The transverse plane of bonnet 5 one
With positioning boss and flange connecting hole is provided with, the other end carries cylindrical installation cavity, and centre is the tubulose with radiating groove
Radiator；Valve body 1 and bonnet 5 are positioned by groove and boss, are connected with flange；Soft graphite is lined between groove and boss
Sealing gasket 3.Two seals groove is provided with, the piston head of valve element 4 of installation twice dynamic seal ring 2 is in the piston cylinder of valve body 1；Valve element
4 valve rod is then in tubular cooler of the bonnet 5 with radiating groove；The other end of valve element 4 is bulb, with the major diameter of push rod 6
The spherical arc of end face forms spherical docking B；High silica phenolic resin heat insulating mattress 7 is enclosed on push rod 6 and the major diameter end face of push rod 6
Fitting, spring 8 is enclosed on push rod 6 and heat insulating mattress 7 is bonded；Bulb, push rod 6, heat insulating mattress 7, the spring 8 of valve element 4 are mounted in bonnet 5
In cylindrical installation cavity；Upper lid 9 is connected by screw thread with the cylindrical installation cavity one end of bonnet 5, and the inner face of upper lid 9 is pressed in spring 8
On, spring 8 is produced pretightning force F2；Support 10 is screwed on upper lid 9, and both sides carry the microswitch of protective plate 12
11, be fixed on by bolt, nut on support, by the contact of adjustment bolt position microswitch 11 on passing lid 9
Directly over the center of the small-diameter sized one end of push rod 6 in centre pilot hole；The collaboration of described piston diameter and initial tension of spring
Change, the switch can be made to adapt to gas with various pressure change.
The operation principle of present example is：After high-temperature gas pressure-sensitive switch access system, when system pressure P increases
Height, during more than upper limit set value (P+ △ P), gas pressure F1Increase, gas pressure F1More than the pretightning force F of spring 82, promote valve element
4 motions, and then promote push rod 6 to move, until the small size diameter end top of push rod 6 to the contact of microswitch 11, produces triggering
Signal, while the spacing of piston stroke δ is cooperatively formed at bonnet 5 and valve body 1, prevent gas excessive pressure F1 be delivered to it is micro-
Dynamic switch 11, damages microswitch 11；When gas pressure P is reduced, during less than lower limit set value (P- △ P), gas pressure reduces,
Gas pressure F1Less than initial tension of spring F2, in spring force F2Under effect, push rod 6 and valve element 4 are promoted, until push rod 6 and fine motion
The contact of switch 11 departs from, and former trigger signal disappears；By trigger signal and triggering disappearance of signal, provided to automatic control system
Automatic control signal source.
The cooperation for the axially position neck A being made up of in present example the boss of the groove to valve body 1 and bonnet 5 is public
Difference control, it is ensured that the central coaxial of revolving body bonnet 5 and valve body 1 is preferable, and then ensures that revolving body valve element 4 is preferably same with the two
Axle.
Spherical docking B of the globulate to ball watt is designed at the position for contacting valve element 4 with push rod 6 in present example, is realized
Automatic capturing center when the valve rod of push rod 6 and valve element 5 transmits power under axially long size, it is ensured that power and motion are all in axle center
Direction is carried out.
When the boss of the groove of valve body 1 and bonnet 5 is installed in present example, therebetween equipped with flexible graphite sealing pad
3, realize sealing and dustproof under high temperature.
The piston cylinder Seal Design of the piston head of valve element 4 and valve body 1 is dual dynamic sealing in present example, dynamic seal ring
The preferred soft graphite of 2 materials, it is ensured that dynamic sealing is reliable, while can play centering with.
By the piston cylinder depth of application valve body 1 and the piston head length of valve element 4 in present example, valve element 4 is formed
Stroke δ, is carried out spacing with the lower surface of the bonnet 5 on valve body 1, and the trip δ both can guarantee that valve element 4 moved, and then push away
Dynamic push rod 6 can promote the contact of microswitch 11 when moving, produce trigger signal, and can ensure because air pressure P increase when, it is excessive
Thrust gas is not transferred to the contact of microswitch 11, damages microswitch 11..
The long-neck sleeve pipe Thermal packer design of bonnet 5 can preferably radiate in present example, reduce the height of the piston cylinder of valve body 1
Wet body heat content transmission, lower thermal conductivity heat insulating mattress 7 use, further retarding heat transmission, it is ensured that the heat being delivered at spring 8
Less, temperature is relatively low, influence of the reduction high temperature to the elastic force of spring 8, raising induction precision, the application of support 10 and protective plate 12,
Further radiating and thermal resistance so that temperature at microswitch 11 increases the range of choice of microswitch 11 close to normal temperature.
The piston head diameter Φ of the valve element 4 and pretightning force F of spring 8 in present example2Collaboration changes, and is suitable for gas with various
Pressure P use.Its dependency relation is as follows：
Wherein：F1=Π φ2P/4
F2=F20+Kδ
When pressure is (P+ △ P), F1=Π φ2The ＞ F of (P+ △ P)/42=F20+ K δ, produce trigger signal；
When pressure is (P- △ P), F1=Π φ2The ＞ F of (P- △ P)/42=F20, disconnect starting signal.
The installation process of the present invention is as follows：
(1) check, clean all parts；
(2) dynamic seal ring 2 is put into the seal groove of piston head of valve element 4, in the piston cylinder that valve element 4 is put into valve body 1,
In the groove that sealing gasket 3 is put into valve body 1, bonnet 5 is enclosed on the valve rod of valve element 4, determined by the groove of boss and valve body 1
Position, connected with bolt, nut；
(3) spherical arc one end and the docking of the bulb of valve element 4 of the push rod 6 of heat insulating mattress 7 and spring 8 will be cased with successively, are placed on
In the installation cavity of bonnet 5, upper lid 9 is screwed with bonnet 5, holddown spring 8, produce pretightning force F20；
(4) support 10 is screwed on upper lid 9, is placed on the both sides of microswitch 11 with two protective plates 12, uses spiral shell
Bolt, nut fix three over the mount 10, ensure the contact of microswitch 11 at the center of push rod 6 by adjustment bolt position
Surface.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (3)
1. a kind of pressure-sensitive switch for being adapted to high-temperature gas, it is characterised in that the switch includes valve body (1), valve element
(4), bonnet (5), push rod (6), spring (8), upper lid (9), support (10), microswitch (11)；
In piston cylinder and hot channel that the valve element (4) is formed mounted in the valve body (1) and the bonnet (5), the valve
Core (4) one end carries piston head, and the piston head of the valve element (4) is mounted in the piston cylinder, the other end of the valve element (4) with
Push rod (6) docking, the spring (8) are enclosed on the push rod (6), and the inner face of the upper lid (9) is pressed in the spring (8)
On；
The support (10) is arranged on the upper lid (9), and the microswitch (11) is fixed on the support (10)；
The bonnet (5) and the excessive pressure F for cooperatively forming the spacing of piston stroke δ, preventing gas at valve body (1) place1It is delivered to
Microswitch (11), damage microswitch (11)；The other end of the valve element (4) is bulb, the bulb and the push rod (6)
Major diameter end face spherical arc row globulate docking, formed automatic capturing function；
The piston head diameter Φ and spring (8) pretightning force F of the valve element (4)2Collaboration changes, and is suitable for making for gas with various pressure P
With；Its dependency relation is as follows：
F1=Π φ2P/4
F2=F20+Kδ
F1For gas pressure, F2For initial tension of spring, F20For pretightning force, δ is stroke, and Π is pi, and Φ is piston head diameter, K
For coefficient；When pressure is (P+ △ P), F1=Π φ2The ＞ F of (P+ △ P)/42=F20+ K δ, produce trigger signal；(P+ △ P) is
Upper limit set value；
When pressure is (P- △ P), F1=Π φ2The ＞ F of (P- △ P)/42=F20, break trigger signal；(P- △ P) sets for lower limit
Definite value；
The bonnet (5) has hot channel, can preferably radiate；The pressure-sensitive switch also includes heat insulating mattress (7), described
Heat insulating mattress (7) has preferable heat-proof quality so that high temperature is smaller on spring influence, and high temperature is not easy to pass to microswitch, can
Sense the pressure change of high-temperature gas；The piston cylinder and the piston head pass through size Control；
The bulb of the valve element (4), the major diameter end face of push rod (6), it is enclosed on the big straight of the push rod (6) and the push rod (6)
The heat insulating mattress (7) of footpath end face fitting, is enclosed on the spring (8) that the push rod (6) is pressed on heat insulating mattress and is mounted in the bonnet (5)
Installation cavity in.
2. pressure-sensitive switch as claimed in claim 1, it is characterised in that the valve body (1), the bonnet (5), the valve
The material of core (4) is high temperature alloy or titanium master alloy, and spring material is high temperature alloy；Described heat insulating mattress (7) material is high silicon
Oxygen phenolic resin.
3. pressure-sensitive switch as claimed in claim 1, it is characterised in that described push rod (6) small-diameter sized one end passes through
The reserved centre pilot hole of the upper lid (9), the contact of the microswitch (11) on the support (10) is fixed on is just
Lower section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520451.2A CN105090574B (en) | 2015-08-21 | 2015-08-21 | A kind of pressure-sensitive switch for being adapted to high-temperature gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510520451.2A CN105090574B (en) | 2015-08-21 | 2015-08-21 | A kind of pressure-sensitive switch for being adapted to high-temperature gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105090574A CN105090574A (en) | 2015-11-25 |
| CN105090574B true CN105090574B (en) | 2018-02-23 |
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ID=54571612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510520451.2A Active CN105090574B (en) | 2015-08-21 | 2015-08-21 | A kind of pressure-sensitive switch for being adapted to high-temperature gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105090574B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106855444B (en) * | 2016-12-02 | 2019-06-28 | 武汉航空仪表有限责任公司 | A kind of low pressure signalling means |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6097232A (en) * | 1983-11-01 | 1985-05-31 | Nippon Denso Co Ltd | Pressure detector |
| CN1009301B (en) * | 1985-08-01 | 1990-08-22 | Tlv有限公司 | Pressure reducing valve with pressure automatic setting |
| FR2595785B1 (en) * | 1986-03-11 | 1988-05-06 | Framatome Sa | APPLICATION TO VALVES AND THE LIKE OF AN ANTI-FLIPPING DEVICE |
| CN201043614Y (en) * | 2007-03-13 | 2008-04-02 | 辽宁良工阀门厂 | Pressure reducing and decompression regulating valve |
| CN103672143A (en) * | 2012-09-21 | 2014-03-26 | 成都市思博睿科技有限公司 | Safety valve pressure warning device |
| CN203500492U (en) * | 2013-10-12 | 2014-03-26 | 浙江盾安阀门有限公司 | Self-centering valve flap seal protection check valve |
| CN104048081B (en) * | 2014-05-29 | 2016-04-13 | 湖北三江航天红峰控制有限公司 | A kind of rock gas safety valve |
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2015
- 2015-08-21 CN CN201510520451.2A patent/CN105090574B/en active Active
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| Publication number | Publication date |
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| CN105090574A (en) | 2015-11-25 |
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