CN208997404U - Safety valve for transportable pressure vessel - Google Patents
Safety valve for transportable pressure vessel Download PDFInfo
- Publication number
- CN208997404U CN208997404U CN201821573191.0U CN201821573191U CN208997404U CN 208997404 U CN208997404 U CN 208997404U CN 201821573191 U CN201821573191 U CN 201821573191U CN 208997404 U CN208997404 U CN 208997404U
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- safety valve
- valve
- ring
- guide portion
- end cap
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- 238000007789 sealing Methods 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 206010017076 Fracture Diseases 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses a kind of safety valve for transportable pressure vessel, which includes end cap, and end cap is located at the upper end of safety valve, and end cap is equipped with mounting hole；Threaded area, threaded area are fixedly connected with end cap lower part, and the outer surface of threaded area is equipped with straight thread, and safety valve is fixedly connected with its valve seat by straight thread；Guide portion, guide portion are fixedly connected with threaded area lower part, and the height of guide portion is the 1/3-2/3 of threaded area straight thread outer diameter, are equipped with annular groove in the periphery of guide portion, annular groove is for accommodating O-ring；And valve function body, valve function body are fixedly connected with guide portion lower part, for over-voltage dielectric gas in pressure vessel to be released out pressure vessel.The safety valve of the utility model can disassemble and install repeatedly, and structure is simple, light-weight, be sealed.
Description
Technical field
The utility model relates to machinery fields, relate more specifically to a kind of safety valve for transportable pressure vessel.
Background technique
By taking liquefied gas truck tank as an example, general liquefied gas truck tank safety valve currently on the market, mostly
Flange form connection, this type of attachment are convenient to dismantle, install repeatedly, it is therefore an objective to meet requirements of the national standard, provide the type
Safety valve, it is necessary to verified, detected every year.
But flange form connects, and has following deficiency:
(1) flanged joint, so that safety valve can protrude the certain height of top of the tank, when tank car crosses tunnel or culvert etc.
When, safety valve will receive collision, or even damage and unexpected pressure release, cause danger.Such case on tank car at home to have more
Occur.
(2) flanged joint makes valve body of safety valve too heavy, both uneconomical to increase the weight of integral valve, also because
The increase of weight, resistance to shock decline.
(3) flanged joint, seal form mostly use biggish sealing ring, the form of end face seal.Big sealing ring, then
It is bigger to bear pressure caused by the pressure of LPG gas, it is higher to the intensity requirement of valve body and groove tank interface.Meanwhile to end face
The compression force request of sealing is also higher, because of end face seal, slightly loosening or sealing ring slightly creep can generate leakage.
(4) flanged joint, the either sealing surface of the flange sealing surface of safety valve or groove tank interface are all exposed to outer
Face, it is easy to cause to damage in disassembly repeatedly is examined, and lead to seal failure, leak.
(5) flanged joint, positioned at the intracorporal arranged at safety valve of tank in integrated suspension state, since the volume of valve is big, weight weight,
In the case where tank car jolts or turns on one's side, it is easy to cause the great quality accidents such as valve body of safety valve fracture.
Another type of attachment connects for taper thread (such as NPT screw thread).This type of attachment, sealed reliable, valve body body
Product is small, light-weight.But this type of attachment is not able to satisfy the requirement dismantled repeatedly.It is external generally to use this type of attachment, because
For foreign standard regulation, such safety valve can do a dissembling inspection with 5 years or 10 years.This is every with domestic standard regulation
The requirement of year necessary dissembling inspection, enters and leaves very big.So taper thread connects, it is generally not suitable for domestic application.
Therefore, this field still lacks one kind and can disassemble and install repeatedly, and structure is simple, light-weight, and what is be sealed is used for
The safety valve of transportable pressure vessel.
Utility model content
The purpose of this utility model is to provide a kind of safety valve for transportable pressure vessel, which can be used for
Tank car, truck tank, long-tube trailer, tank container and the tube bank of the media such as storage and transport LPG, anhydrous ammonia and propane
The transportable pressure vessels such as formula container as its safety attachment, and are particularly suitable for the overvoltage protection of moving pressure container, this reality
It can be disassembled and installed repeatedly with novel safety valve, structure is simple, and it is light-weight, it is sealed.
The utility model provides a kind of safety valve for transportable pressure vessel, which includes end cap, end cap
Positioned at the upper end of safety valve, end cap is equipped with mounting hole；Threaded area, threaded area are fixedly connected with end cap lower part, threaded area
Outer surface is equipped with straight thread, and safety valve is fixedly connected with its valve seat by straight thread；Guide portion, guide portion and threaded area lower part are solid
Fixed connection, the height of guide portion are the 1/3-2/3 of threaded area straight thread outer diameter, are equipped with annular groove in the periphery of guide portion, annular groove is used
In receiving O-ring；And valve function body, valve function body are fixedly connected with guide portion lower part, are used for mistake in pressure vessel
Pressure dielectric gas is released out pressure vessel.
In another preferred example, guide portion is guide cylinder.
In another preferred example, the high 0.5-2.0cm of end cap.
In another preferred example, for safety valve by O-ring radial seal, safety valve includes O-ring retaining ring, O-ring retaining ring
For preventing O-ring to be squeezed and deformed, overflowing and even cut.
In another preferred example, the quantity of annular groove is 1-3, and each annular groove is equipped with matched O-ring.
In another preferred example, the distance between O-ring and threaded area lower end are the 1/3-2/3 of guide portion height.
In another preferred example, the distance between O-ring and threaded area lower end are the 1/3-1/2 of guide portion height.
In another preferred example, O-ring retaining ring accommodates in a groove, and O-ring retaining ring is in the top of O-ring.
It should be noted that O-ring seal and its retaining ring are located at the lower section of screw thread, and the groove tank interface with O-ring sealing
The cylindrical body matched can design longer, so, can both guarantee that safety valve was in use, screw thread does not contact gas
Medium or other impurities avoid surface corrosion or screw thread stress corrosion, and can guarantee when screw thread has slight loosening, O-ring
Slight moves up and down, and does not influence radial seal effect, still can guarantee to seal No leakage.The peace in addition, O-ring seal is sunk
Dress, can prevent tank body in the case of fire, damage sealing ring because temperature is excessively high.
In another preferred example, O-ring is first of sealing of safety valve.
In another preferred example, safety valve is equipped with the second road sealing device at end cap, and the second road sealing device is filler
The gasket seal of letter or fire-proof and dust-proof.
In another preferred example, the diameter of end cap is greater than the aperture with the matched valve seat of safety valve.
In another preferred example, end cap is equipped with flange, and the second road sealing device is arranged between flange and valve seat.
In another preferred example, the outer peripheral edge of end cap is equipped with the equally distributed groove of annular, groove be used for on valve seat
Location hole cooperation, and then prevent screw thread from loosening because of vibration.
In another preferred example, groove is circular groove.
In another preferred example, the groove on the valve seat location hole cooperation refer to: the groove, with it is described fixed
Position hole be it is conformal, plug-in unit (such as: screw, pin, bolt etc.) passes through the groove and is inserted into the location hole；It is described simultaneously
Groove and the plug-in unit form snap-fit relationship, and the plug-in unit stops the rotation of the end cap, and then plays fastening effect, prevents spiral shell
Line is loosened because of vibration.
In another preferred example, groove is uniformly distributed with 5 ° -30 ° of angle interval.
It in another preferred example, can be in 1/2 distribution angle by cooperating two to three location holes of declinate distribution on valve seat
Locking matching is completed in (2.5 ° -15 °) range.
In another preferred example, mounting hole is interior hexagonal structure, not only saves space, but also can prevent from arbitrarily dismantling.
In another preferred example, end cap, threaded area, guide portion and valve function body are integrated or integrally formed.
In another preferred example, valve function body includes valve rod, and valve rod is arranged along the central axis of safety valve；Main valve seat,
Main valve seat is fixedly connected with the lower part of guide portion, for fixed support valve rod；Locking nut, locking nut is for fixing valve rod
In main valve seat；Outlet passageway, outlet passageway are fixedly connected with the lower end of main valve seat, for acquiring the overpressure gases in pressure vessel
Medium simultaneously gives off pressure vessel in time, prevents over-voltage；Spring, spring are surrounded on the periphery of valve rod, one end of spring and outlet
The lower end in channel leans；And lock nut, lock nut are used for the other end of holddown spring.
In another preferred example, spring is the spring with high-fineness ratio, and the spring with high-fineness ratio had both reduced peace
The overall volume of full valve, and the stress fracture risk of spring is reduced, and under identical operating condition, the Lift of valve seat is bigger,
Possess bigger emission flow.
In another preferred example, the slenderness ratio of spring is greater than 5.
In another preferred example, primary seal pad is equipped between locking nut and main valve seat, and primary seal pad is close to outlet
Channel, primary seal pad are contacted and are compacted with main valve seat under the action of the spring, for providing the interior sealing of safety valve, work as pressure
When container inner medium pressure is less than safety valve setting pressure, primary seal pad contacts sealing with main valve seat；When medium in pressure vessel
When pressure is greater than safety valve setting pressure, primary seal pad is separated with main valve seat, and overpressure gases medium is by outlet passageway through main valve seat
And container is discharged in the gap of primary seal pad.
In another preferred example, elongated valve function body is equipped with guide sleeve, and valve rod is maintained in guide sleeve by guide sleeve,
Effectively to control beat, the bias of valve rod and valve function body.
In another preferred example, spring inner is equipped with guide sleeve, prevents spring beat due to vibration.
In another preferred example, the hold-doun nut for connecting valve rod both ends enhances the reliability of valve using locking processing.
It should be understood that in the scope of the utility model, above-mentioned each technical characteristic of the utility model and below (such as implementation
Example) in specifically describe each technical characteristic between can be combined with each other, to form a new or preferred technical solution.It is limited to
Length, not repeated them here.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art does and simply introduces, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the cross-sectional view of the safety valve in one example of the utility model；
Fig. 2 is the enlarged drawing of the C portion in Fig. 1；
Fig. 3 is the safety valve in one example of the utility model and the partial sectional view after valve seat assembly；
Fig. 4 is after the safety valve and valve seat (there are two location holes for tool on valve seat) in one example of the utility model assemble
Top view；
Fig. 5 is after the safety valve and valve seat (there are three location holes for tool on valve seat) in one example of the utility model assemble
Top view.
In each attached drawing, each mark is as follows:
1- end cap；
The threaded area 2-；
The guide portion 3-；
4-O type circle；
5-O type circle retaining ring；
6- valve function body；
7- valve rod；
8- main valve seat；
9- locking nut；
10- outlet passageway；
11- spring；
12- lock nut；
13- guide sleeve；
14- guide sleeve；
15- primary seal pad；
16- gasket seal；
17- mounting hole；
18- valve seat；
19- safety valve；
20- gasket；
21- check bolt；
22- location hole.
Specific embodiment
The present inventor after extensive and in-depth study, by largely screening, develops a kind of for mobile pressure for the first time
The safety valve of force container, compared with prior art, the safety valve of the utility model use straight thread structure, convenient for disassembly repeatedly and
Installation；And screw thread is sunk type installation, so that safety valve is integrally located in transportable pressure vessel, safe transportation, sealing effect
Fruit is more preferable；It is lower to the intensity requirement of valve body and groove tank interface using O-ring radial seal；By being arranged on emergency valve seat
Location hole realize effective fastening to safety valve, complete the utility model on this basis.
The major advantage of the utility model includes:
1) the utility model is straight thread structure, and screw thread do not have sealing function, is only used for locking, can dismantle repeatedly and
Installation；
2) screw thread of the utility model is sunk type installation, so that safety valve is flushed with top of the tank, overall safety valve is equal
In groove tank, when tank car crosses tunnel or culvert etc., safety valve will not be collided, to considerably increase in valve use
Safety；
3) the utility model substantially reduces valve body of safety valve weight, to increase the economy of integral valve, also enhances
Its resistance to shock；
4) seal form of the utility model uses O-ring radial seal, bears LPG or the pressure institute of other dielectric gas
The pressure very little of generation is lower to the intensity requirement of valve body and groove tank interface；
5) position is hidden since the sealing surface of seal groove and tank body interface is located at, the safety valve of the utility model is not susceptible to
To touching, it is more conducive to the disassembly and installation repeatedly of valve, prevents seal failure caused by maloperation, is leaked；
6) the utility model make the fixation for being located at the cylindrical body that the intracorporal safety valve of tank is matched by groove tank interface and
Protection, in the case where tank car jolts or turns on one's side, valve body of safety valve not will cause the great quality accidents such as fracture；
7) the utility model is by equally distributed outer rim fixed groove, can be easy to by safety valve with and its cooperate
Valve seat is fixed together, and prevents valve main thread from loosening and causing to leak.
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, attached drawing is schematic diagram, therefore utility model device and set
Standby is not limited by the size of schematic diagram or ratio.
It should be noted that in the claim and specification of this patent, such as first and second or the like relationship
Term is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying
There are any actual relationship or orders between these entities or operation.Moreover, the terms "include", "comprise" or its
Any other variant is intended to non-exclusive inclusion so that include the process, methods of a series of elements, article or
Equipment not only includes those elements, but also including other elements that are not explicitly listed, or further include for this process,
Method, article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence " including one " limited
Element, it is not excluded that there is also other identical elements in the process, method, article or equipment for including element.
Embodiment
The safety valve for transportable pressure vessel of the present embodiment is as shown in Figs. 1-2.The safety valve includes from top to bottom
End cap 1, threaded area 2, guide portion 3 and valve function body 6.Wherein, end cap 1, threaded area 2, guide portion 3 and valve function body 6 are
It is one or integrally formed.
The height of end cap 1 is 0.5-2.0cm, and the diameter of end cap 1 is greater than the aperture with the matched valve seat of safety valve, so that peace
After full valve and valve seat assembly, end cap 1 is exposed to outside valve seat.The outer peripheral edge of end cap 1 is equipped with 5 ° -30 ° of angle interval uniform ring
The groove of shape distribution, groove are circular groove, and groove is used to cooperate with the location hole on valve seat, by cooperating declinate on valve seat
Multiple location holes of distribution, can complete locking matching within the scope of 2.5 ° of -15 ° of distribution angles, and then prevent from shaking in vehicle driving
It is loosened during dynamic.End cap 1 is equipped with mounting hole 17, and mounting hole 17 is the matching hole of installation tool and safety valve, for dismounting peace
Full valve, mounting hole 17 are interior octagonal structure, not only save space, but also can prevent from arbitrarily dismantling.In another preferred example, it installs
Hole 17 can also be interior hexagonal structure.
The outer surface of threaded area 2 is equipped with straight thread, and safety valve is fixedly connected with its valve seat by straight thread.Straight thread does not have
Sealing function is only used for locking, safety valve is disassembled and installed repeatedly.Screw thread is sunk type installation, so that safety
Valve is flushed with top of the tank, and overall safety valve is respectively positioned in groove tank, and when tank car crosses tunnel or culvert etc., safety valve not will receive
Collision, to considerably increase the safety in valve use.
Guide portion 3 is guide cylinder, and the height of guide portion 3 is the 1/3-2/3 of 2 straight thread outer diameter of threaded area.It is being oriented to
The periphery in area 3 is equipped with annular groove, and annular groove is for accommodating 4 retaining ring 5 of O-ring 4 and O-ring, and wherein 4 retaining ring 5 of O-ring is set to O-ring 4
Top.And 4 retaining ring 5 of O-ring is for preventing O-ring 4 to be squeezed and deformed, overflowing and even cut.The quantity of annular groove in the present embodiment
It is one, and according to required configuration, the quantity of annular groove may be multiple, such as two or three, and each annular groove is equipped with
Matched 4 retaining ring 5 of O-ring 4 and O-ring, and then formation is multi-layer sealed, so that sealing effect is more preferable.O-ring 4 is radial
Sealing is first of sealing of safety valve, by 4 radial seal of O-ring, so that bearing LPG or the pressure institute of other dielectric gas
The pressure very little of generation is lower to the intensity requirement of valve body and groove tank interface.Safety valve is equipped with second sealing dress at end cap 1
It sets, the second road sealing device is the gasket seal 16 of stuffing-box or fire-proof and dust-proof.End cap 1 is arranged in second road sealing device
Between flange and valve seat.The distance between 2 lower end of O-ring 4 and threaded area is the 1/3-1/2 of 3 height of guide portion；Preferably, O-shaped
Circle the distance between 4 and 2 lower end of threaded area are the 1/3-2/3 of 3 height of guide portion.
O-ring seal and its retaining ring are located at the lower section of screw thread, and the guiding matched with the groove tank interface that O-ring 4 seals
Cylindrical body can design longer, and such design is so that safety valve is in use, and screw thread does not contact gas medium or other are miscellaneous
Matter avoids surface corrosion or screw thread stress corrosion, and can guarantee when screw thread has slight loosening, O-ring 4 it is slight on move down
It is dynamic, radial seal effect is not influenced, still can guarantee to seal No leakage.The installation in addition, O-ring seal is sunk, can prevent
Tank body damages sealing ring in the case of fire, because temperature is excessively high.
Valve function body 6 is used for over-voltage dielectric gas in pressure vessel is released out pressure vessel, including valve rod 7, main valve
Seat 8, locking nut 9, outlet passageway 10, spring 11, lock nut 12 and primary seal pad 15.Central axis of the valve rod 7 along safety valve
Line setting.Main valve seat 8 is fixedly connected with the lower part of guide portion 3, for fixed support valve rod 7.Locking nut 9 is used for valve rod 7
It is fixed on main valve seat 8.Outlet passageway 10 is fixedly connected with the lower end of main valve seat 8, for acquiring the overpressure gases in pressure vessel
Medium simultaneously gives off pressure vessel in time, prevents over-voltage.Spring 11 is surrounded on the periphery of valve rod 7, one end of spring 11 and outlet
The lower end in channel 10 leans.Spring 11 has high-fineness ratio (at least more than 5), so that both having reduced the whole body of safety valve
Product, and the stress fracture risk of spring is reduced, and under identical operating condition, the Lift of valve seat is bigger, possesses bigger row
The amount of releasing.Lock nut 12 is used for the other end of holddown spring 11.The setting of primary seal pad 15 locking nut 9 and main valve seat 8 it
Between, close to outlet passageway 10, contacts and compress with main valve seat 8 under the action of spring 11, for providing the interior sealing of safety valve,
When pressure medium is less than safety valve setting pressure in pressure vessel, primary seal pad 15 contacts sealing with main valve seat 8；When pressure is held
When pressure medium is greater than safety valve setting pressure in device, primary seal pad 15 is separated with main valve seat 8, and overpressure gases medium is led to by outlet
Container is discharged through the gap of main valve seat 8 and primary seal pad 15 in road 10.Elongated valve function body 6 is additionally provided with guide sleeve 13, guiding
Valve rod 7 is maintained in guide sleeve 13 by set 13, effectively to control beat, the bias of valve rod 7 and valve function body 6.Spring 11
Inside is equipped with guide sleeve 14, prevents spring beat due to vibration.The hold-doun nut for connecting 7 both ends of valve rod, using locking processing, enhancing
The reliability of valve.
Fig. 3 and Fig. 4 respectively illustrates the safety valve 19 of the utility model and sets that there are two the valve seats 18 of location hole 22 to assemble
Cross-sectional view and top view afterwards.The outer rim of end cap is equipped with equally distributed groove, and the quantity of groove is N, in two adjacent grooves
Distribution angle in the heart is α, then α=360 °/N.It is assumed that No. 1 location hole is in 0 ° of position, then No. 2 location holes and nearest cross
Center line angulation θ=α/2.Therefore, when end cap peripheral groove and valve seat 18 cooperate, two location holes 22 can be at 1/2 point
Anti- loose fit is completed in cloth angular range.
Fig. 5 shows the safety valve 19 of the utility model and sets the vertical view after assembling there are three the valve seat 18 of location hole 22
Figure.The outer rim of end cap is equipped with equally distributed groove, and the quantity of groove is N, and the distribution angle between two adjacent grooves centers is
α, then α=360 °/N.It is assumed that No. 1 location hole is in 0 ° of position, then No. 2 location holes and nearest cross centre line angulation θ1=
α/2, No. 3 location holes and nearest cross middle line angulation are θ2=θ1α/4/2=.Therefore, in end cap peripheral groove and valve seat
When 18 cooperation, three location holes 22 can complete anti-loose fit within the scope of 1/4 distribution angle.
After end cap is rotated in place, groove is passed through by check bolt 21 and location hole 22 positions end cap, it is preferable that
Gasket 20 is added between check bolt 21 and end cap.It should be noted that check bolt is a kind of card format, can also lead to
The plug-in units such as pin, nail are crossed to be fixed.
According to above content, valve seat also settable four, five cooperated with the safety valve of the utility model
Or more location hole, to carry out loosening cooperation.It should be noted that multiple location holes should be arranged with scattering as far as possible,
To reduce the influence to the stiffness and strength of valve seat.
It is incorporated herein by reference in all documents that the utility model refers to, just as each document quilt
It is individually recited as with reference to such.In addition, it should also be understood that, after having read the above-mentioned teaching content of the utility model, this field skill
Art personnel can make various changes or modifications the utility model, and such equivalent forms equally fall within the application appended claims
Book limited range.
Claims (10)
1. a kind of safety valve for transportable pressure vessel, which is characterized in that the safety valve includes
End cap, the end cap are located at the upper end of the safety valve, and the end cap is equipped with mounting hole；
Threaded area, the threaded area are fixedly connected with the end cap lower part, and the outer surface of the threaded area is equipped with straight thread, described
Safety valve is fixedly connected with its valve seat by the straight thread；
Guide portion, the guide portion are fixedly connected with the threaded area lower part, and the height of the guide portion is threaded area straight thread
The 1/3-2/3 of outer diameter is equipped with annular groove in the periphery of the guide portion, and the annular groove is for accommodating O-ring；And
Valve function body, the valve function body are fixedly connected with the guide portion lower part, are used for mistake in the pressure vessel
Pressure dielectric gas is released out the pressure vessel.
2. safety valve as described in claim 1, which is characterized in that the safety valve is described by the O-ring radial seal
Safety valve includes O-ring retaining ring, and the O-ring retaining ring is for preventing the O-ring to be squeezed and deformed, overflowing and even cut.
3. safety valve as claimed in claim 2, which is characterized in that the distance between the O-ring and the threaded area lower end
It is the 1/3-1/2 of the guide portion height.
4. safety valve as claimed in claim 2, which is characterized in that the O-ring retaining ring is contained in the annular groove, and described
O-ring retaining ring is in the top of the O-ring.
5. safety valve as described in claim 1, which is characterized in that the safety valve is equipped with second sealing dress at end cap
It sets, second road sealing device is the gasket seal of stuffing-box or fire-proof and dust-proof.
6. safety valve as described in claim 1, which is characterized in that it is equally distributed recessed that the outer peripheral edge of the end cap is equipped with annular
Slot, the groove are used to cooperate with the location hole on the valve seat.
7. safety valve as claimed in claim 6, which is characterized in that the groove is uniformly distributed with 5 ° -30 ° of angle interval.
8. safety valve as described in claim 1, which is characterized in that the end cap, the threaded area, the guide portion and described
Valve function body is integrated or integrally formed.
9. safety valve as described in claim 1, which is characterized in that the valve function body includes
Valve rod, the valve rod are arranged along the central axis of the safety valve；
Main valve seat, the main valve seat are fixedly connected with the lower part of the guide portion, support the valve rod for fixed；
Locking nut, the locking nut are used to the valve rod being fixed on the main valve seat；
Outlet passageway, the outlet passageway are fixedly connected with the lower end of the main valve seat, for acquiring in the pressure vessel
Overpressure gases medium simultaneously gives off the pressure vessel in time；
Spring, the spring are surrounded on the periphery of the valve rod, and one end of the spring and the lower end of the outlet passageway offset
It leans on；And
Lock nut, the lock nut are used to compress the other end of the spring.
10. safety valve as claimed in claim 9, which is characterized in that the slenderness ratio of the spring is greater than 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821573191.0U CN208997404U (en) | 2018-09-26 | 2018-09-26 | Safety valve for transportable pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821573191.0U CN208997404U (en) | 2018-09-26 | 2018-09-26 | Safety valve for transportable pressure vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208997404U true CN208997404U (en) | 2019-06-18 |
Family
ID=66800971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821573191.0U Active CN208997404U (en) | 2018-09-26 | 2018-09-26 | Safety valve for transportable pressure vessel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208997404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895183A (en) * | 2018-09-26 | 2018-11-27 | 雷舸流体科技（上海）有限公司 | Safety valve for transportable pressure vessel |
-
2018
- 2018-09-26 CN CN201821573191.0U patent/CN208997404U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108895183A (en) * | 2018-09-26 | 2018-11-27 | 雷舸流体科技（上海）有限公司 | Safety valve for transportable pressure vessel |
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