CN205978502U - Three eccentric butterfly valves of high pressure - Google Patents
Three eccentric butterfly valves of high pressure Download PDFInfo
- Publication number
- CN205978502U CN205978502U CN201620646020.0U CN201620646020U CN205978502U CN 205978502 U CN205978502 U CN 205978502U CN 201620646020 U CN201620646020 U CN 201620646020U CN 205978502 U CN205978502 U CN 205978502U
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- valve
- valve body
- disk seat
- high pressure
- plate
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Abstract
The utility model provides a three eccentric butterfly valves of high pressure, includes valve body, valve plate, disk seat and axle, the axle runs through the valve body and installs the bearing in the valve body, and is connected its characterized in that with the valve plate through the round pin: the disk seat compress tightly on the valve body through the disk seat clamping ring, the disk seat clamping ring to pass through screw thread and valve body fixed, disk seat and valve body between the card go into the valve washer, disk seat and disk seat clamping ring between install the valve plate backing plate, the outside of disk seat clamping ring the position of valve plate backing plate is adjusted by the screw. The utility model provides a simple structure, processing technology three eccentric butterfly valves of high pressure simple, easily assembly adjustment, sealing performance excellence, the relative position of its sealing ring can not influence its leakproofness owing to the effect of external force by the thread tightening, and screw cooperation valve plate backing plate provides sealed annular surface and presses, makes sealing ring and valve seat seal, and the change that has reduced external environment conditions such as high temperature high pressure makes the suitable pressure and the temperature range of three eccentric butterfly valves wider to the influence that the sealing member is out of shape.
Description
Technical field
The utility model is related to a kind of butterfly valve and in particular to a kind of high pressure three core shift butterfly valve.
Background technology
Butterfly valve is a kind of conventional control valve, has that structure is simple, small volume, lightweight feature are widely used in stone
The industry fields such as oiling work, metallurgical steel-making, water process, electric power.
At present, the regulation of HTHP especially High Pressure Difference and cut-out occasion under three-eccentric-butterfly-valve, be all import mostly
Product.The three-eccentric-butterfly-valve that domestic manufacturer produces is generally soft seal, and sealing ring is metal and graphite stacked structure, this structure
Typically there is good sealing property at normal temperatures and pressures, but due to the graphite material scope of application under HTHP or low temperature
Limitation can lead to leakage rate increase, the situation that valve fits badly.In addition, under the impact of high-pressure medium, soft graphite is very
It is more easily damaged, so that valve leakage automatic inspection is exceeded.
The metal sealing type three-eccentric-butterfly-valve seal form of domestic production is essentially all face sealing, and valve plate is taper seat,
Sealing ring is placed on valve plate, and with trim ring compression, valve body processes step and sealing ring coordinates.So design shortcoming be in order to
Body cavity must be reduced by valve body and sealing ring cooperation, so that the negotiability of valve is substantially reduced, once and on valve body
Sealing surface damage, pole not aspect maintenance；In addition, the moment of torsion required for the sealing of face is big, need to match larger executing agency.
The patent of Publication No. CN 204477330 U, discloses a kind of three-eccentric-butterfly-valve with linear sealing structure, its
Sealing station is on one wire although improve sealing property, but this structure is high to the processing request of valve partses,
Requirement to assembly crewman is also high simultaneously, needs to can be only achieved sealing station after being dismounted for multiple times adjusts, reaches requirement
Sealing effectiveness.And, during actual use, linear sealing is high due to sealing station requirement, and the valve adjusted is in fortune
Often due to external force impact in defeated and installation process, the sealing station adjusted changes, and leads to the seal failure of butterfly valve；Warp
Cross and repeatedly exchange with user, my company finds, when valve is arranged on pipeline, because bolt is twisted too when companion flange is installed
Tightly, lead to the transition compression of the wound form packing ring between companion flange and valve body, so that wound form packing ring is reached at sealing ring by power,
Thus leading to valve to depart from sealing line position, lead to valve leak big, seal failure.
Utility model content
The utility model aims to provide a kind of high pressure three core shift butterfly valve, and its sealing structure is still linear sealing, but in trim ring and
Using special construction so as to sealing station is not subject to External force interference on sealing ring, sealing property is effectively ensured, in square one
Under improve the high voltage performance of three core shift butterfly valves.
In order to solve the above problems, the high pressure three core shift butterfly valve that the utility model provides employs following technical scheme：
A kind of high pressure three core shift butterfly valve, including valve body, valve plate, valve seat and axle, axle runs through valve body and is arranged in valve body
Bearing, and be connected with valve plate by pin it is characterised in that：Described valve seat is pressed on valve body by valve seat trim ring, described
Valve seat trim ring fixed with valve body by screw thread, snap in valve washer, described valve seat and valve between described valve seat and valve body
Valve plate backing plate is installed between seat trim ring, the outside of described valve seat trim ring is adjusted the position of valve plate backing plate by screw.
Preferably, the outside of described valve seat trim ring is provided with screw, and screw can adjust the position of fixing valve plate backing plate.
Preferably, described valve washer is the reinforced Graphite pad of 316L metallic plate.
Preferably, the sealing surface of valve plate is the positive conical surface, and the sealing surface of valve seat is arc surface.
The beneficial effects of the utility model are：Provide that a kind of structure is simple, processing technology simple, be easily assembled tune
The excellent high pressure of whole, sealing property three core shift butterfly valve, the relative position of its sealing ring, will not be due to the work of external force by being screwed
With and affect its sealing, screw fit valve plate backing plate provide sealing ring face pressure, make sealing ring and valve base sealing, decrease high temperature
The impact to seal deformation for the change of the external environment conditions such as high pressure, makes the Applicable temperature scope of three core shift butterfly valves wider.
Brief description
The configuration schematic diagram of the preferred embodiment that Fig. 1 provides for the utility model.
The assembling structure schematic diagram of the preferred embodiment that Fig. 2 provides for the utility model.
Wherein：1. valve body；2. valve plate；3. valve seat；4. valve seat trim ring；5. valve washer；6. axle；7. bearing；31. valve plate pads
Plate；23. screws.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, real below in conjunction with the application
Apply the accompanying drawing in example, the enforcement it is clear that described is clearly and completely described to the technical scheme in the embodiment of the present application
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of not making creative work, all should belong to the application protection
Scope.
As Figure 1-Figure 2, a kind of high pressure three core shift butterfly valve that the utility model provides, it includes valve body 1, valve plate 2, valve
Seat 3 and axle 6, axle 6 runs through valve body 1 and is arranged on bearing 7 in valve body 1, and be connected with valve plate 2 by pin it is characterised in that：
Described valve seat 3 is pressed on valve body 1 by valve seat trim ring 4, and described valve seat trim ring 4 passes through screw thread to be fixed with valve body 1, reduces
Due in transport and installation process, the impact that external force produces to butterfly valve, improve sealing property, described valve seat 3 and valve body 1
Between snap in valve washer 5, between described valve seat 3 and valve seat trim ring 4, valve plate backing plate 31 is installed.
In another preferred embodiment of the present utility model, the outside of described valve seat trim ring 4 is provided with screw 23, spiral shell
Nail 23 can adjust the position of fixing valve plate backing plate 31, and then reaches the purpose compressing valve seat 3, reaches better seal effect,
The temperature and pressure simultaneously decreasing environment leads to the factor that sealing changes to the impact of seat material.
In another preferred embodiment of the present utility model, described valve washer is the reinforced stone of 316L metallic plate
Tampon piece, when butterfly valve is arranged on pipeline, decreases the too tightly impact to sealing line position that bolt when companion flange is installed is twisted,
Good sealing effect.
In another preferred embodiment of the present utility model, the sealing surface of valve plate is the positive conical surface, the sealing surface of valve seat
For arc surface, valve plate uses positive vertebra face, compared with the eccentric circular cone adopting with other producers domestic, on the sealing pair of positive vertebra face everywhere
Face pressure uniformity, and partially bore face pressure everywhere and differ completely, there are high pressure and low-pressure area, low-pressure area reaches required during sealing
Face pressure is higher than higher-pressure region, needs larger moment of torsion to realize sealing.So compared with existing inclined vertebra face, the utility model is just
Centre plane needed for conical surface seal forces down, and the moment of torsion of needs is little, is more easy to realize sealing.Therefore compared with existing three-eccentric-butterfly-valve,
Leakage control more preferably, fastens that moment of torsion is less, and valve negotiability is bigger.Using the sealing of simple metal under HTHP or low temperature
Ring is with the obvious advantage compared with existing product.
The beneficial effects of the utility model are：Provide that a kind of structure is simple, processing technology simple, be easily assembled tune
The excellent high pressure of whole, sealing property three core shift butterfly valve, the relative position of its sealing ring, will not be due to the work of external force by being screwed
With and affect its sealing, screw fit valve plate backing plate provide sealing ring face pressure, make sealing ring and valve base sealing, decrease high temperature
The impact to seal deformation for the change of the external environment conditions such as high pressure, makes the applicable pressure and temperature scope of three core shift butterfly valves wider.
Stating embodiment is only that technology design of the present utility model and feature are described, its object is to allow and is familiar with technique
Personage will appreciate that content of the present utility model and implements according to this, can not limit protection domain of the present utility model with this.All
The equivalence changes done according to the utility model or modification, all should cover within protection domain of the present utility model.
Claims (4)
1. a kind of high pressure three core shift butterfly valve, including valve body, valve plate, valve seat and axle, axle runs through valve body and is arranged on the axle in valve body
Hold, and be connected with valve plate by pin it is characterised in that：Described valve seat is pressed on valve body by valve seat trim ring, described
Valve seat trim ring is fixed with valve body by screw thread, snaps in valve washer, described valve seat and valve seat between described valve seat and valve body
Valve plate backing plate is installed between trim ring, the outside of described valve seat trim ring is adjusted the position of valve plate backing plate by screw.
2. a kind of high pressure three core shift butterfly valve according to claim 1 it is characterised in that：The outside of described valve seat trim ring sets
There is screw, screw can adjust the position of fixing valve plate backing plate.
3. a kind of high pressure three core shift butterfly valve according to claim 1 it is characterised in that：Described valve washer is 316L gold
Belong to the reinforced Graphite pad of plate.
4. a kind of high pressure three core shift butterfly valve according to claim 1 it is characterised in that：The sealing surface of valve plate is the positive conical surface,
The sealing surface of valve seat is arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620646020.0U CN205978502U (en) | 2016-06-27 | 2016-06-27 | Three eccentric butterfly valves of high pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620646020.0U CN205978502U (en) | 2016-06-27 | 2016-06-27 | Three eccentric butterfly valves of high pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205978502U true CN205978502U (en) | 2017-02-22 |
Family
ID=58021676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620646020.0U Expired - Fee Related CN205978502U (en) | 2016-06-27 | 2016-06-27 | Three eccentric butterfly valves of high pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205978502U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987185A (en) * | 2016-06-27 | 2016-10-05 | 无锡斯考尔自动控制设备有限公司 | High-pressure triple eccentric butterfly valve |
-
2016
- 2016-06-27 CN CN201620646020.0U patent/CN205978502U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105987185A (en) * | 2016-06-27 | 2016-10-05 | 无锡斯考尔自动控制设备有限公司 | High-pressure triple eccentric butterfly valve |
| CN105987185B (en) * | 2016-06-27 | 2018-07-03 | 无锡斯考尔自动控制设备有限公司 | A kind of three core shift butterfly valve of high pressure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20180627 |