CN206130148U - Flat gate valve - Google Patents
Flat gate valve Download PDFInfo
- Publication number
- CN206130148U CN206130148U CN201620924497.0U CN201620924497U CN206130148U CN 206130148 U CN206130148 U CN 206130148U CN 201620924497 U CN201620924497 U CN 201620924497U CN 206130148 U CN206130148 U CN 206130148U
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- gate valve
- pressure
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- rotary support
- stud
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Abstract
The utility model relates to a gate valve technical field especially relates to a flat gate valve. Flat gate valve is including rotatory support to reach rotatable setting and rotating the inside rotatory double -screw bolt of support, wherein, be provided with sealed chamber between rotatory support and the rotatory double -screw bolt, still include pressure measurement, this pressure measurement's sense terminal links to each other with sealed chamber for detect the pressure of sealed intracavity. The utility model discloses an it is rotary combined's the sealed condition that pressure measurement detects sealed chamber, can make corresponding judgement before the sealed chamber seal failure of rotary combined, prevents that it from appearing leaking, and specially adapted oil, chemical industry etc. Require very high occasion to the security performance.
Description
Technical field
This utility model is related to gate valve technical field, more particularly to a kind of flat-plate gate valve.
Background technology
Flat-plate gate valve is one of conventional block valve, mainly by one piece of parallel flashboard connecting or disconnect in pipeline
Medium；Rising stem type and blind rod type flat gate valve can be divided into by the structure and motion mode of its valve rod.Rising stem type flat gate valve master
It is characterized in that and drives flashboard to carry out ascending, descending campaign together to reach the purpose of open and close valve by valve rod；The valve due to due to structure
When fully opening, the top half at valve stem seal position can be prolonged exposed in air dielectric, when valve is completely closed
The latter half at valve stem seal position will be immersed in fluid for a long time；Therefore its stem surface be easy to adhere to dirt or
It is corroded, so as to cause the scratch and damage of sealing member, so as to breakseal performance, affects service life.
The motion thread of blind rod type flat gate valve is located inside flashboard, and in opening-closing process, valve rod only rotates, lock
Plate is lifted because of being rotated in valve body for valve rod.Therefore, because valve rod does not have the relative motion of axial direction with sealing member, its sealing surface is not
Easily contaminated, corrosion, substantially increases the service life of crucial drive disk assembly.But all of hidden-rod gate valve is tied due to which at present
The restriction of structure all can be only applied to low pressure, the big, occasion of medium caliber；And the sealing of cervical region is easily produced in use for some time
It is raw to reveal.
Therefore during current slide valve is only used for open and close number of times infrequently, low pressure operating mode；High pressure, heavy caliber and
There is the occasion that flow is frequently adjusted normally can not use completely.
The particularly important is after leaking occurs in rotary part annular seal space, can just be found, cause leakage accident occur.
For the problems referred to above, after proposing that one kind can solve the problem that leakage occurs in existing rotary part annular seal space, could be sent out
It is existing, cause the flat-plate gate valve for leakage accident occur.
Utility model content
The purpose of this utility model is to propose a kind of flat-plate gate valve, can solve the problem that existing rotary part annular seal space goes out
After now leaking, can just be found, the problem for causing leakage accident occur.
It is that, up to this purpose, this utility model is employed the following technical solutions：
A kind of flat-plate gate valve, including rotary support, and the rotation stud being spindle rotationally arranged in inside rotary support,
Wherein, annular seal space is provided between the rotary support and rotation stud；
Also include pressure-detecting device, the test side of the pressure-detecting device is connected with annular seal space, for detecting annular seal space
Interior pressure.
Used as a kind of preferred version of above-mentioned flat-plate gate valve, the pressure-detecting device is to be arranged on the rotary support
On pressure transducer；
The annular seal space includes the solution cavity being arranged on rotary support, and intercommunicating pore is provided with the solution cavity, described
The test side of pressure transducer is connected with solution cavity by intercommunicating pore.
Used as a kind of preferred version of above-mentioned flat-plate gate valve, the rotary support top is fixed with many by connecting bracket
Revolution executor, the rotation stud are connected with the outfan of many revolution executors, and are turned under the drive of many revolution executors
It is dynamic.
Used as a kind of preferred version of above-mentioned flat-plate gate valve, the lower end of the rotary support is provided with valve body, the valve
Valve plate is provided with vivo,
The valve plate is by lifting valve rod with rotation Stud connection；
The screw that is provided centrally with for rotating stud, the lifting valve rod are rotated with screw and are connected.
As a kind of preferred version of above-mentioned flat-plate gate valve, the rotation stud pressure-releasing hole, one end of the pressure-releasing hole with
Cavity connection in valve body, the other end is connected with annular seal space, and the one end connected with annular seal space is provided with plug.
Used as a kind of preferred version of above-mentioned flat-plate gate valve, the rotation stud passes through thrust ball bearing and taper roller
Bearing is arranged in rotary support.
As a kind of preferred version of above-mentioned flat-plate gate valve, oil nozzle is installed outside described rotary support；
Bearing of the oil nozzle by oilhole and in rotary support rotates chamber and connects, and the oil nozzle is for bearing rotation chamber
Interior oiling, is additionally operable to after the seal failure of annular seal space, and the liquid in gate valve is flowed out from oil nozzle.
As a kind of preferred version of above-mentioned flat-plate gate valve, at the oil nozzle, pressure-detecting device is provided with, for examining
The pressure surveyed in oil nozzle.
Used as a kind of preferred version of above-mentioned flat-plate gate valve, the outer surface of described rotation stud end is provided with combination
Glais ring, for rotating the sealing between stud and rotary support, makes to form annular seal space between the two.
The beneficial effects of the utility model are：By pressure-detecting device, this utility model detects that annular seal space is rotation combination
Sealing situation, corresponding judgement can be made before rotation combination annular seal space seal failure, is prevented which from leakage occur, is especially fitted
For oil, chemical industry etc. to the exigent occasion of security performance.
Description of the drawings
Fig. 1 is the structural representation one of the flat-plate gate valve that this utility model specific embodiment is provided；
Fig. 2 is the structural representation two of the flat-plate gate valve that this utility model specific embodiment is provided.
Specific embodiment
The technical solution of the utility model is further illustrated below in conjunction with the accompanying drawings and by specific embodiment.
As shown in Figure 1 and Figure 2, present embodiments provide for a kind of flat-plate gate valve, the flat-plate gate valve is by many revolution execution
Device 1, connecting bracket 2, rotation stud 3, plug 4, thrust ball bearing 5, Special oil nozzle 6, taper roll bearing 7, combination Glais ring
8th, rotary support 9, lifting valve rod 10, valve plate 11, valve body 12, valve body solution cavity 13 and pressure transducer 14 are constituted.
Annular seal space is provided between rotary support 9 and rotation stud 3, pressure-detecting device is the detection of pressure transducer 14
End is connected with annular seal space, for detecting the pressure of sealing intracavity.Specifically, pressure transducer 14 is arranged on rotary support 9.It is close
Envelope chamber includes the solution cavity 13 being arranged on rotary support 9, and intercommunicating pore, the detection of pressure transducer 14 are provided with solution cavity 13
End is connected with solution cavity 13 by intercommunicating pore.By the pressure changing of pressure-detecting device, can seal in rotation combination
Corresponding judgement is made before the seal failure of chamber, prevents which from leakage occur, be particularly well-suited to oil, chemical industry etc. and security performance is required
Very high occasion.
9 top of rotary support is fixed with many revolution executors 1, rotation stud 3 and many revolution executors by connecting bracket 2
1 outfan connection, and rotate under the drive of many revolution executors 1.
The lower end of rotary support 9 is provided with valve body 12, and valve plate 11 is provided with valve body 12, and valve plate 11 is by lifting valve rod 10
It is connected with rotation stud 3；The screw that is provided centrally with of stud 3 is rotated, lifting valve rod 10 is rotated with screw and is connected.The valve is by rising
Drop screw rod 10 screws in, to screw out rotation stud 3 interior opens and closes action complete valve, avoids rocking to sealing for flashboard 11
The impact of position.
Rotation 3 pressure-releasing hole of stud, one end of the pressure-releasing hole are connected with the cavity in valve body 12, and the other end is connected with annular seal space
It is logical, and the one end connected with annular seal space is provided with plug 4.
Rotation stud 3 passes through thrust ball bearing 5 and taper roll bearing 7 is arranged in rotary support 9.By being arranged on rotation
Turn the turning moment that on stud 3 two bearings open and close process to reduce valve.
The outside of rotary support 9 oil nozzle 6 is installed, oil nozzle 6 rotates chamber by the bearing in oilhole and rotary support 9 and connects
It is logical.Oil nozzle 6 is additionally operable to after the seal failure of annular seal space for rotating intracavity oiling to bearing, and the liquid in gate valve is from oil nozzle 6
Flow out.That is, after the seal failure of gate valve, the liquid in valve body can be flowed out by oil nozzle 6, can play prompting gate valve
Seal failure is used for.
The sealing feelings of the 6 energy real-time monitoring rotary part of pressure transducer 14 and oil nozzle by being arranged on rotary support 9
Condition.
Further, pressure-detecting device is provided with oil nozzle 6, for detecting the pressure in oil nozzle 6.Pressure-detecting device
For pressure transducer, by the setting of pressure transducer, after Gate-valve sealing fails, the pressure in oil nozzle 6 can change, and lead to
The detection of over-pressed force transducer can find that Gate-valve sealing fails in time.
The outer surface of rotation stud 3 end combination Glais ring 8 is installed, for rotating between stud 3 and rotary support 9
Sealing, make to form annular seal space between the two.Carried by being arranged on the combination Glais ring 8 between rotation nut and rotary support
The bearing capacity and anti-wear performance of high moving part.
In sum, the flat-plate gate valve that the application is provided has advantages below：
1st, open and close part and adopt new balance floating-type seal structure, it is ensured that valve rod is excellent close under dynamic and static state
Close performance；Opening and closing the equal surfacing of member seal face has high nickel hard alloy, the characteristics of with anti-corrosion, wear-resisting, long working life.
2nd, lifting piece is built in hoisting nut in rotation stud, and combined labyrinth and carbon gland skill is adopted between rotary support
Art, greatly improves the sealing property and bearing capacity of valve neck；Can be suitably used for the frequent regulation of mesohigh large bore valves.
3rd, by the sealing condition of unique annular seal space pressure sensitive system real-time monitoring rotation combination sealing；It is particularly suitable
In oil, chemical industry etc. to the exigent occasion of security performance.
So, above-mentioned flat-plate gate valve had both overcome rising stem type flat gate valve as the sealing position of valve rod is naked for a long time
It is exposed in fluid or air dielectric, stem surface is easy to adhere to dirt and be corroded, and is easily caused seal surface and produces scratch
Until damaging, so as to breakseal performance, the deficiency of service life is affected；Hidden-rod gate valve is solved again due to the limit of its structure
System can be only applied to low pressure, the big, problem of medium caliber occasion.The use range of flat gate valve is extended, flat gate valve is improved
Service behaviour and substantially prolongs its service life, realize the frequent regulation to flow under environment under high pressure, enhance
Overall security performance.
Know-why of the present utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With new principle, and the restriction to this utility model protection domain can not be construed to by any way.Based on explanation herein,
Those skilled in the art associates other specific embodiments of the present utility model by need not paying performing creative labour,
These modes are fallen within protection domain of the present utility model.
Claims (9)
1. a kind of flat-plate gate valve, including rotary support, and the rotation stud being spindle rotationally arranged in inside rotary support, its
It is characterised by, between the rotary support and rotation stud, is provided with annular seal space；
Also include pressure-detecting device, the test side of the pressure-detecting device is connected with annular seal space, for detecting sealing intracavity
Pressure.
2. flat-plate gate valve according to claim 1, it is characterised in that the pressure-detecting device is to be arranged on the rotation
Turn the pressure transducer (14) on bearing (9)；
The annular seal space includes the solution cavity (13) being arranged on rotary support (9), is provided with connection on the solution cavity (13)
Hole, the test side of the pressure transducer (14) are connected with solution cavity (13) by intercommunicating pore.
3. flat-plate gate valve according to claim 1, it is characterised in that rotary support (9) top is by connection
Frame (2) is fixed with many revolutions executor (1), and rotation stud (3) is connected with the outfan of many revolutions executor (1), and
Rotate under the drive of many revolutions executor (1).
4. flat-plate gate valve according to claim 1, it is characterised in that the lower end of the rotary support (9) is provided with valve
Valve plate (11) is provided with body (12), the valve body (12),
The valve plate (11) is connected with rotation stud (3) by lifting valve rod (10)；
The screw that is provided centrally with for rotating stud (3), the lifting valve rod (10) are rotated with screw and are connected.
5. flat-plate gate valve according to claim 4, it is characterised in that rotation stud (3) pressure-releasing hole, the pressure-releasing hole
One end connect with the cavity in valve body (12), the other end is connected with annular seal space, and the one end connected with annular seal space be provided with it is stifled
Head.
6. flat-plate gate valve according to claim 1, it is characterised in that the rotation stud (3) is by thrust ball bearing
(5) it is arranged in rotary support (9) with taper roll bearing (7).
7. flat-plate gate valve according to claim 6, it is characterised in that be provided with outside described rotary support (9)
Oil nozzle (6)；
The oil nozzle (6) rotates chamber by the bearing in oilhole and rotary support (9) and connects, and the oil nozzle is for rotating to bearing
Intracavity oiling, is additionally operable to after the seal failure of annular seal space, and the liquid in gate valve is flowed out from oil nozzle (6).
8. flat-plate gate valve according to claim 7, it is characterised in that oil nozzle (6) place is provided with pressure detecting dress
Put, for detecting the pressure in oil nozzle (6).
9. flat-plate gate valve according to claim 1, it is characterised in that the outer surface of described rotation stud (3) end
Combination Glais ring (8) is installed, for rotating the sealing between stud (3) and rotary support (9), makes to form sealing between the two
Chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924497.0U CN206130148U (en) | 2016-08-23 | 2016-08-23 | Flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924497.0U CN206130148U (en) | 2016-08-23 | 2016-08-23 | Flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206130148U true CN206130148U (en) | 2017-04-26 |
Family
ID=58565771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620924497.0U Active CN206130148U (en) | 2016-08-23 | 2016-08-23 | Flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206130148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879288A (en) * | 2018-09-05 | 2020-03-13 | 中国石油天然气股份有限公司 | Lubrication detection device |
-
2016
- 2016-08-23 CN CN201620924497.0U patent/CN206130148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110879288A (en) * | 2018-09-05 | 2020-03-13 | 中国石油天然气股份有限公司 | Lubrication detection device |
| CN110879288B (en) * | 2018-09-05 | 2023-02-28 | 中国石油天然气股份有限公司 | Lubrication detection device |
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