CN205978525U - Fire hydrant is with seal structure who has double sealing - Google Patents
Fire hydrant is with seal structure who has double sealing Download PDFInfo
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- CN205978525U CN205978525U CN201620910328.1U CN201620910328U CN205978525U CN 205978525 U CN205978525 U CN 205978525U CN 201620910328 U CN201620910328 U CN 201620910328U CN 205978525 U CN205978525 U CN 205978525U
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- valve body
- pair
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- sealing
- metal valve
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Abstract
The utility model discloses a fire hydrant is with seal structure who has double sealing, when the fire hydrant was closed, it was vice to form double sealing between metal valve disc and the metal valve body, its characterized in that sealed vice including: hard sealed pair more than one with the vice combination of above soft seal, it is hard sealed vice hard sealed vice by metal valve disc and metal valve body direct contact formation, the soft seal is vice with metal valve body cooperation formation soft seal by being equipped with elastic sealing element on the metal valve disc, or it is vice with metal valve disc cooperation formation soft seal to be equipped with elastic sealing element on the metal valve body. Seal structure adopts has seal structure sealed firmly and the dual advantage of soft seal, has both had the fire resistance of fire hydrant sealed firmly, can have the good sealing performance of soft seal fire hydrant again. The legal requirement of " international convention for the safety of life at sea " had both been satisfied, and the boats and ships operation requirement can be satisfied again.
Description
Technical field
This utility model is related to a kind of fire hydrant with having the sealing structure of dual-seal.
Background technology
Fire is one of main factor of impact safety of ship, and fixing water-based fire protection system is the most basic of ship use
Fire extinguishing means, fire hydrant is requisite equipment in fire-fighting system.The fire hydrant standard often using at present includes：China is peculiar to vessel
Fire hydrant GB GB/T2032, Japanese standard JIS F7334 peculiar to vessel, Chinese vessel industry standard CB/T4032, German fire-fighting mark
Quasi- DIN86211.Wherein, allow the fire hydrant using soft seal form in GB/T2032；Also soft seal is had to disappear in DIN 86211
Anti- stud structure, but non-fire hydrant standard peculiar to vessel；All only has the pattern of hard sealing structure in JIS and CB standard.《International Maritime human life
Security pact》(SOLAS) specify in the 10th article of 2.1.1 of ii -2：" heat is easy to the material losing efficacy, unless it has sufficient guarantor
Shield, must not be used for fire main pipe and fire hydrant." which limits the use aboard ship of the encapsulants such as rubber.
Increasingly the strict enforcement of SOLAS pact limits the making of soft seal fire hydrant making encapsulant using rubber
With.However, needing higher seal pressure using the fire hydrant of hard sealing, sealing property is highly susceptible to the mud in sea water again
The impact of the debris such as sand, ground metallic sealing section injured or corrosion after be susceptible to leak.Although sealing fire hydrant energy firmly
Ensure the fire resistance of fire hydrant, but there is in using easy leakage.
Based on this, fire hydrant designer is generally from two angle solve problems：(1) improve hard sealing metal material property,
Improved structure, prevents debris in the accumulation of valve port, it is to avoid sealing surface is injured.(2) " sufficiently the protecting " that be directed to requirements of convention does
Article, improves the protection to rubber seal by structure, or changes high temperature sealing material.This corrective measure runs into
How a difficult problem is by the effectiveness of fire resistance test proof protection.ISO19921《Ship and marine technical-it is furnished with elastic sealing element
Metal tubes adnexa fire resistance》Hose valve during fire resistance test is required to open, inside keeps circulating water temperature at 80 DEG C about,
But this does not meet state in the case of catching fire for the fire hydrant.For the water fire fighting system used by freighter and most passenger boat, all adopt
Dry pipe system, does not have water in piping under normal circumstances, and when there is fire, fire hydrant can be directly exposed in fire, during dry combustion method
Rubber valve disc and metal seat valve directly contact, in the case of 800 DEG C of external skin temperatures, rubber ring or even Graphite pad are likely to become
Shape is even burnt.Dry combustion method test lacks suitable standard at aspects such as baked wheaten cake time, permission amount of leakage.Therefore one kind is more effectively
Sealing structure is badly in need of being developed, and is used for solving the above problems.
Content of the invention
The hard sealing fire hydrant that this utility model is directed to prior art presence easily leaks and soft close under soiled condition
Envelope fire hydrant is intolerant to the problem burnt, and develops a kind of fire hydrant with having the sealing structure of dual-seal.Concrete technical scheme
As follows：
A kind of fire hydrant with having the sealing structure of dual-seal, when fire hydrant is closed, metal valve disc and metal valve body
Between formed dual-seal secondary it is characterised in that described sealing pair includes：Together above hard sealing pair with together with above soft
The combination of sealing pair；
Described hard sealing pair forms hard sealing pair by metal valve disc and metal valve body directly contact；
Described soft seal pair is provided with elastic sealing element by metal valve disc and cooperatively forms soft seal pair with metal valve body；Or gold
Genus valve body is provided with elastic sealing element and cooperatively forms soft seal pair with metal valve disc.
Described hard sealing pair and soft seal pair are arranged on the flat contact surface that metal valve disc and metal valve body are constituted.
Another kind of scheme is to be provided with conical contact surface construction between described metal valve disc and metal valve body, hard sealing pair or soft close
Envelope pair is arranged in conical contact surface construction.There are following two forms：
1) described metal valve disc has valve disc pyramidal structure, and the bottom diameter of described valve disc pyramidal structure is less than upper straight
Footpath, corresponding metal valve body is provided with the valve body taper accommodating chamber that back cut diameter is more than lower port diameter, for same valve disc taper knot
Structure matches, and the root of valve disc pyramidal structure is provided with valve disc contact plane, the valve body taper accommodating chamber of corresponding composition metal valve body
The top of cavity wall be provided with the valve body contact plane matching with valve disc contact plane.
2) described metal valve body has valve body pyramidal structure, and the upper end diameter of described valve body pyramidal structure is straight less than bottom
Footpath, corresponding metal valve disc is provided with the valve disc taper accommodating chamber that lower port diameter is more than back cut diameter, for same valve body taper knot
Structure matches, and the root of valve body pyramidal structure is provided with valve body contact plane, the valve disc taper accommodating chamber of corresponding composition metal valve disc
The bottom of cavity wall be provided with the valve disc contact plane matching with valve body contact plane.
Form hard sealing pair at described valve disc contact plane and valve body contact flat face, correspond to metal valve disc or metal valve
Body is provided with elastic sealing element, and the conical contact surface construction between metal valve disc and metal valve body constitutes soft seal pair.
Described valve disc contact plane or valve body contact plane are provided with elastic sealing element, valve disc contact plane and valve body contact
Form soft seal pair, the conical contact surface construction between corresponding metal valve disc and metal valve body constitutes hard sealing pair at flat face.
Described elastic sealing element is made up of elaxtic seal.
A kind of fire hydrant is with having the sealing pair of dual-seal, when fire hydrant is closed, shape between metal valve disc and valve seat
Become sealing pair it is characterised in that described sealing pair includes：Together above hard sealing pair with together with above soft seal pair；
Described hard sealing pair forms hard sealing pair by metal valve disc and valve seat directly contact；
Described soft seal pair is provided with elastic sealing element by metal valve disc and cooperatively forms soft seal pair with valve seat；Or on valve seat
It is provided with elastic sealing element and cooperatively form soft seal pair with metal valve disc.
Described in the utility model have dual-seal pair, has advantages below and beneficial effect：
(1) ensure that the fire resistance of fire hydrant it is ensured that the integrity of fire-fighting system and safety in fire.
(2) reduce the leakage in routine use, prevent deck from corroding, reduce daily maintenance workload.
(3) conformance with standard requires, and exchanges highly versatile.
(4) compact conformation, does not increase fire hydrant installation dimension.
Brief description
Fig. 1 is the structural representation of the dual-seal fire hydrant using sealing gasket；
Fig. 2 is the structural representation of the dual-seal fire hydrant using O-ring seal；
Fig. 3 is the structural representation of embodiment 1；
Fig. 4 is the structural representation of embodiment 2；
Fig. 5 is the structural representation of embodiment 3；
Fig. 6 is the structural representation of embodiment 4；
Fig. 7 is the structural representation of embodiment 5；
Fig. 8 is the structural representation of embodiment 6；
Fig. 9 is the structural representation of embodiment 7；
Figure 10 is the structural representation of embodiment 8.
Specific embodiment
A kind of fire hydrant as shown in Figures 1 to 10 is with having the sealing structure of dual-seal, when fire hydrant is closed, golden
Belong to and between valve disc and metal valve body, form sealing pair 8, described sealing pair 8 includes：Together above hard sealing pair 801 with together with
On soft seal pair 802；Described hard sealing pair 801 forms hard sealing pair by metal valve disc 6 and metal valve body 7 directly contact；Institute
State soft seal pair 802 elastic sealing element 9 is provided with by metal valve disc 6 and cooperatively form soft seal pair with metal valve body 7, or metal valve
Body 7 is provided with elastic sealing element 9 and cooperatively forms soft seal pair with metal valve disc 6.Wherein hard sealing pair and soft seal pair are arranged on
On the flat contact surface of metal valve disc and metal valve body composition.Conical contact also can be provided between metal valve disc and metal valve body
Face, hard sealing pair or soft seal pair are arranged in conical contact surface construction.Described elastic sealing element 9 is made up of elaxtic seal.I.e.
Can constitute for rubber, plastic or other material, pad or the sealing ring of various cross sectional shapes can be adopted.This sealing structure can be used for
Through-type fire hydrant as depicted in figs. 1 and 2, similarly also apply be applicable to perpendicular type fire hydrant.
In normal operation, the closing torque on valve handle is changed into valve rod pressure and is respectively acting on two by valve rod
On road sealing pair, at this moment rely primarily on that soft seal is secondary to ensure good sealing property, even if impurities in water is more in sea also can be reliable
Ground sealing.When a fire, if flame high temperature lead to elastic sealing element damage, valve rod pressure shift completely concentrate on firmly close
On seal structure, remain to reach standard and firmly seal the same level of security of fire hydrant.Hard sealing guarantee is relied on to disappear in this utility model
Anti- safety, soft sealing material is only used for improving sealing property, belongs to Redundancy Design, meets SOLAS requirements of convention.This utility model
Can ensure to have from structure and be not less than the hard fire resistance sealing fire hydrant in national standard.
The design feature being different from traditional soft seal fire hydrant is, it is close that soft seal fire hydrant relies only on soft sealing material
Envelope, to ensure enough seal pressures.The valve disc of encapsulant both sides is only used for fixed seal ring and has protective effect.This reality
Key with new enforcement is two seals should be able to be enable to reach must press q by ratiomf, but less than allowable than pressure q.Sealing ring or sealing
Before fire hydrant unsealing, its top exceeds the top of sealing surface to pad, adjustment sealing ring or pad exceed height can change close
Seal pressure distributes, and makes sealing pair reach the seal pressure of regulation.Utilize the rigidity of soft and hard seal material different, by adjusting in design
Whole soft sealing material decrement, can change the distribution of valve rod pressure, so that two seals pair all reaches design requirement sealing ratio
Pressure.The moment of torsion of valve handle is converted into axial compressive force by the screw thread on valve rod, and acts on first on soft sealing material.When soft
When encapsulant is compressed to pre- definite proportion pressure, hard sealing pair comes into contact with, because hard sealing pair rigidity is far longer than soft seal pair,
The pressure that valve rod newly increases almost acts on hard sealing pair completely.Because seal pressure has wider scope, above-mentioned design will
Ask easy realization.Usually, the hard seal pressure of copper alloy not less than 3MPa but should be less than 80MPa；Rubber sealing should than pressure
Not less than 0.6MPa but less than 5MPa.In embodiment, metal hard-sealing face need to be ground, rubber blanket or cushion rubber thickness 2-
6 millimeters.
It is of the present utility model that to be embodied as sealing structure as follows：
Embodiment 1：As shown in figure 3, hard sealing pair 801 and soft seal pair 802 are arranged on metal valve disc 6 and metal valve body 7
On the flat contact surface constituting, and the elastic sealing element 9 of composition soft seal pair 802 is arranged in metal valve body 7.Elastic sealing element
9 adopt sealing ring, and sealing ring is arranged on inside hard sealing pair 801.When being sealed, the inwall of metal valve body 7 is to sealing ring
Between metal valve body top different metal valve disc 6 joint, i.e. the metal valve body between sealing ring for the inwall of metal valve body 7
Top is with having certain gap 704 between metal valve disc 6；Before fire hydrant unsealing, its top exceeds metal to wherein sealing ring
The top of valve body 7, exceeding of adjustment sealing ring highly can change seal pressure distribution, makes sealing pair 801 and 802 reach regulation
Seal pressure.So can ensure that fire hydrant, in normal temperature environment seal performance, takes into account the requirement of fire resistance simultaneously again.In the present embodiment
Elastic sealing element 9 can also be arranged on metal valve disc 6, there is identical sealing effectiveness.
Embodiment 2：As shown in figure 4, hard sealing pair 801 and soft seal pair 802 are arranged on metal valve disc 6 and metal valve body 7
On the flat contact surface constituting, the elastic sealing element 9 constituting soft seal pair 802 is arranged on metal valve disc 6.Elastic sealing element 9
Using sealing gasket, sealing gasket is arranged on inside hard sealing pair 801.Before fire hydrant unsealing, its top exceeds wherein sealing gasket
The top of metal valve disc 6, exceeding of adjustment sealing gasket highly can change seal pressure distribution, makes sealing pair 801 and 802 reach rule
Fixed seal pressure.
Embodiment 3：As shown in figure 5, being provided with conical contact surface construction, soft seal pair 802 between metal valve disc 6 and metal valve body 7
It is arranged in conical contact surface construction.Hard sealing pair 801 is arranged on metal valve disc 6 and the flat contact surface of metal valve body 7.Described gold
Belong to valve disc 6 and there is valve disc pyramidal structure 601, the bottom diameter of described valve disc pyramidal structure 601 is less than upper diameter (in back taper
Shape structure), corresponding metal valve body 7 is provided with back cut diameter and is more than the valve body taper accommodating chamber 701 of lower port diameter for same valve
Discone structure 601 matches, and the root of valve disc pyramidal structure 601 is provided with valve disc contact plane, corresponding composition metal valve body 7
The top of the cavity wall of valve body taper accommodating chamber 701 is provided with the valve body contact plane matching with valve disc contact plane.Constitute soft close
The elastic sealing element 9 of envelope secondary 802 is arranged on metal valve disc 6.Elastic sealing element 9 adopts sealing ring, and sealing ring is arranged on valve disc
On the outer wall of pyramidal structure 601.When being sealed, sealing ring is in close contact with the inwall of valve body taper accommodating chamber 701 and constitutes
Soft seal pair 802, valve disc contact plane touches with valve body contact flat face and constitutes hard sealing pair 801.Wherein sealing ring is in fire-fighting
Before bolt unsealing, its top exceeds the top of metal valve body 7, and exceeding of adjustment sealing ring highly can change seal pressure distribution,
Sealing pair 801 and 802 is made to reach the seal pressure of regulation.
Embodiment 4：As shown in fig. 6, being provided with conical contact surface construction, soft seal pair 802 between metal valve disc 6 and metal valve body 7
It is arranged in conical contact surface construction.Hard sealing pair 801 is arranged on metal valve disc 6 and the flat contact surface of metal valve body 7.Described gold
Belong to valve body 7 and there is valve body pyramidal structure 703, the upper end diameter of described valve body pyramidal structure 703 is (tapered less than lower diameter
Structure), corresponding metal valve disc 6 is provided with lower port diameter and is more than the valve disc taper accommodating chamber 603 of back cut diameter for same valve body
Pyramidal structure matches, and the root of valve body pyramidal structure 703 is provided with valve body contact plane 702, the valve of corresponding composition metal valve disc 6
The bottom of the cavity wall of discone accommodating chamber 603 is provided with the valve disc contact plane 602 matching with valve body contact plane 702.Elasticity
Sealing member 9 adopts sealing ring, and sealing ring is arranged on the outer wall of valve body pyramidal structure 703.When being sealed, the same valve of sealing ring
The inwall of discone accommodating chamber 603 is in close contact and constitutes soft seal pair 802, and valve disc contact plane 602 is with valve body contact plane 702
The hard sealing pair 801 of the composition that contacts.
Embodiment 5：As shown in fig. 7, hard sealing pair 801 and soft seal pair 802 are arranged on metal valve disc 6 and metal valve body 7
On the flat contact surface constituting, and the elastic sealing element 9 of composition soft seal pair 802 is arranged on metal valve disc 6.Described metal valve
Disk 6 is provided with cannelure 604 with metal valve body 7 touching position, and such metal valve disc 6 and metal valve body 7 are formed for twice and firmly seal
Secondary 801 (sealing pairs more than twice can be further assured that hard sealing effectiveness).Elastic sealing element 9 adopts sealing ring, and sealing ring sets
Put inside hard sealing pair 801.
Embodiment 6：As shown in figure 8, being provided with conical contact surface construction, soft seal pair 802 between metal valve disc 6 and metal valve body 7
It is arranged in conical contact surface construction.Hard sealing pair 801 is arranged on metal valve disc 6 and the flat contact surface of metal valve body 7.Described gold
Belong to valve disc 6 and there is valve disc pyramidal structure 601, the bottom diameter of described valve disc pyramidal structure 601 is less than upper diameter (in back taper
Shape structure), corresponding metal valve body 7 is provided with back cut diameter and is more than the valve body taper accommodating chamber 701 of lower port diameter for same valve
Discone structure 601 matches, and the root of valve disc pyramidal structure 601 is provided with valve disc contact plane 602, corresponding composition metal valve body
The top of 7 cavity wall of valve body taper accommodating chamber 701 is provided with the valve body contact plane 702 matching with valve disc contact plane.Structure
The elastic sealing element 9 becoming soft seal pair 802 is arranged in metal valve body 7.Elastic sealing element 9 adopts sealing ring, and sealing ring is arranged
On the inwall of valve body taper accommodating chamber 701.When being sealed, sealing ring closely connects with the outer wall of valve disc pyramidal structure 601
Touch and constitute soft seal pair 802, valve disc contact plane 602 contacts with valve body contact plane 702 and constitutes hard sealing pair 801.
Embodiment 7：As shown in figure 9, being provided with conical contact surface construction between metal valve disc 6 and metal valve body 7.Hard sealing pair 801
It is arranged on metal valve disc 6 and the flat contact surface of metal valve body 7, soft seal pair 802 is arranged on flat contact surface.Described gold
Belong to valve disc 6 and there is valve disc pyramidal structure 601, the bottom diameter of described valve disc pyramidal structure 601 is less than upper diameter (in back taper
Shape structure), corresponding metal valve body 7 is provided with back cut diameter and is more than the valve body taper accommodating chamber 701 of lower port diameter for same valve
Discone structure 601 matches, and the root of valve disc pyramidal structure 601 is provided with valve disc contact plane 602, corresponding composition metal valve body
The top of 7 cavity wall of valve body taper accommodating chamber 701 is provided with the valve body contact plane 702 matching with valve disc contact plane.Bullet
Property sealing member 9 adopts sealing ring, and sealing ring is arranged in valve body contact plane 702.When being sealed, valve disc contact plane
602 are in close contact composition soft seal pair 802 with sealing ring；The outer wall of valve disc pyramidal structure 601 is with valve body taper accommodating chamber 701
Inwall joint forms hard sealing pair 801.
Embodiment 8：As shown in Figure 10, hard sealing pair 801 and soft seal pair 802 are arranged on metal valve disc 6 and valve seat 10 structure
On the flat contact surface becoming, and the elastic sealing element 9 of composition soft seal pair 802 is arranged on valve seat 10.Elastic sealing element 9 adopts
Sealing ring, sealing ring is arranged on inside hard sealing pair 801.When being sealed, the inwall of valve seat 10 valve between sealing ring
Seat top different metal valve disc 6 joint, between that is, the valve seat top between sealing ring for the inwall of valve seat 10 is with metal valve disc 6
There is certain gap；Before fire hydrant unsealing, its top exceeds the top of valve seat 10 to wherein sealing ring.Described metal valve disc 6
It is provided with cannelure 604 with valve seat 10 touching position, such metal valve disc 6 and valve seat 10 are formed for the hard sealing pair of twice 801.
The sealing structure that this patent is proposed improves the sealing structure of conventional fire hydrant, is firmly sealed and soft close using having
The sealing structure of envelope dual characteristicses, had both had the hard fire resistance sealing fire hydrant, had had the well close of soft seal fire hydrant again
Sealing property.When fire hydrant is closed, closing torque is converted to by pressure by handwheel and valve rod and applies to valve disc, valve disc and valve body
Form sealing pair.Sealing pair in this utility model employs double sealing structure, and that is, the first resealing is metal material to bullet
Property material soft sealing structure, the second resealing be the hard sealing structure to metal material for the metal material, the two is used in series.Just
Often under working condition, valve rod transmission pressure is respectively acting in two seals pair, relies primarily on soft sealing structure guarantee good
Sealing property, even if impurities in water is more also can reliably seal in sea.When a fire, flame high temperature leads to elastic sealing element to become
Shape, valve rod pressure is totally absorbed on hard sealing structure, remains to reach standard and firmly seals the same level of security of fire hydrant.This reality
Ensure security against fire with the hard sealing pair of new dependence, meet《Convention on the Life Safety at Sea》Require, soft seal pair belongs to redundancy and sets
Meter.When a fire, although the fire hydrant being surrounded by flame will not be used, even if under dry-fire condition, also should ensure that and disappear
The structural intergrity of anti-bolt, it is to avoid fire water leaks in a large number and leads to fire main pipe cannot set up effective pressure, thus affect
The normal use of other fire hydrants.Under dry-fire condition, a small amount of leakage is acceptable to fire hydrant, in addition may also operate as right
Around and itself play cooling protection effect.Under routine use state, crewman can use fire water clamp down, should prevent from disappearing
The evaporating, emitting, dripping or leaking of liquid or gas of anti-bolt.
The above, only this utility model preferably specific embodiment, but protection domain of the present utility model is not
Be confined to this, any those familiar with the art in the technical scope that this utility model discloses, according to this practicality
New technical scheme and its inventive concept equivalent or change in addition, all should cover protection domain of the present utility model it
Interior.Sealing structure provided by the utility model can be additionally used in the ship's fire fighting piping valve with similar fire resisting and seal request
Part, connection flange, the sealing of adnexa.
Claims (9)
1. a kind of fire hydrant is with having the sealing structure of dual-seal, when fire hydrant is closed, metal valve disc and metal valve body it
Between formed sealing pair it is characterised in that described sealing pair includes：Together above hard sealing pair with together with above soft seal pair；
Described hard sealing pair forms hard sealing pair by metal valve disc and metal valve body directly contact；
Described soft seal pair is provided with elastic sealing element by metal valve disc and cooperatively forms soft seal pair with metal valve body；Or metal valve
Body is provided with elastic sealing element and cooperatively forms soft seal pair with metal valve disc.
2. a kind of fire hydrant according to claim 1 is with having the sealing structure of dual-seal it is characterised in that described hard
Sealing pair and soft seal pair are arranged on the flat contact surface that metal valve disc and metal valve body are constituted.
3. a kind of fire hydrant according to claim 1 is with having the sealing structure of dual-seal it is characterised in that described gold
Belong to and be provided with conical contact surface construction between valve disc and metal valve body, hard sealing pair or soft seal pair are arranged in conical contact surface construction.
4. a kind of fire hydrant according to claim 3 is with having the sealing structure of dual-seal it is characterised in that described gold
Belong to valve disc and there is valve disc pyramidal structure, the bottom diameter of described valve disc pyramidal structure is less than upper diameter, corresponding metal valve
Body is provided with the valve body taper accommodating chamber that back cut diameter is more than lower port diameter, matches for same valve disc pyramidal structure；Valve disc is bored
The root of shape structure is provided with valve disc contact plane, and the top of the cavity wall of valve body taper accommodating chamber of corresponding composition metal valve body is provided with
The valve body contact plane matching with valve disc contact plane.
5. a kind of fire hydrant according to claim 3 is with having the sealing structure of dual-seal it is characterised in that described gold
Belong to valve body and there is valve body pyramidal structure, the upper end diameter of described valve body pyramidal structure is less than lower diameter, corresponding metal valve
Disk is provided with the valve disc taper accommodating chamber that lower port diameter is more than back cut diameter, matches for same valve body pyramidal structure；Valve body is bored
The root of shape structure is provided with valve body contact plane, and the bottom of the cavity wall of valve disc taper accommodating chamber of corresponding composition metal valve disc is provided with
The valve disc contact plane matching with valve body contact plane.
6. a kind of fire hydrant according to claim 4 or 5 is with having the sealing structure of dual-seal it is characterised in that described
Form hard sealing pair, corresponding metal valve disc or metal valve body are provided with elasticity at valve disc contact plane and valve body contact flat face
Sealing member, the conical contact surface construction between metal valve disc and metal valve body constitutes soft seal pair.
7. a kind of fire hydrant according to claim 4 or 5 is with having the sealing structure of dual-seal it is characterised in that described
Valve disc contact plane or valve body contact plane are provided with elastic sealing element, shape at valve disc contact plane and valve body contact flat face
Become soft seal pair, the conical contact surface construction between corresponding metal valve disc and metal valve body constitutes hard sealing pair.
8. a kind of fire hydrant sealing structure with dual-seal according to claim 1 to 5 any claim, its
It is characterised by that described elastic sealing element is made up of elaxtic seal.
9. a kind of fire hydrant is with having the sealing structure of dual-seal, when fire hydrant is closed, shape between metal valve disc and valve seat
Become sealing pair it is characterised in that described sealing pair includes：Together above hard sealing pair with together with above soft seal pair；
Described hard sealing pair forms hard sealing pair by metal valve disc and valve seat directly contact；
Described soft seal pair is provided with elastic sealing element by metal valve disc and cooperatively forms soft seal pair with valve seat；Or valve seat is provided with
Elastic sealing element cooperatively forms soft seal pair with metal valve disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620910328.1U CN205978525U (en) | 2016-08-20 | 2016-08-20 | Fire hydrant is with seal structure who has double sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620910328.1U CN205978525U (en) | 2016-08-20 | 2016-08-20 | Fire hydrant is with seal structure who has double sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978525U true CN205978525U (en) | 2017-02-22 |
Family
ID=58032035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620910328.1U Expired - Fee Related CN205978525U (en) | 2016-08-20 | 2016-08-20 | Fire hydrant is with seal structure who has double sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205978525U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051189A (en) * | 2016-08-20 | 2016-10-26 | 王艺澄 | Hydrant seal structure with double sealing |
| US20230062462A1 (en) * | 2015-09-21 | 2023-03-02 | AMI Investments, LLC | Remote monitoring of water distribution system |
-
2016
- 2016-08-20 CN CN201620910328.1U patent/CN205978525U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230062462A1 (en) * | 2015-09-21 | 2023-03-02 | AMI Investments, LLC | Remote monitoring of water distribution system |
| CN106051189A (en) * | 2016-08-20 | 2016-10-26 | 王艺澄 | Hydrant seal structure with double sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20190820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |