CN111022673A - Supercritical high-performance integrally-forged soft and hard double-seal closed valve - Google Patents
Supercritical high-performance integrally-forged soft and hard double-seal closed valve Download PDFInfo
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- CN111022673A CN111022673A CN201911265261.5A CN201911265261A CN111022673A CN 111022673 A CN111022673 A CN 111022673A CN 201911265261 A CN201911265261 A CN 201911265261A CN 111022673 A CN111022673 A CN 111022673A
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- valve
- flashboard
- valve body
- cover
- hard
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0281—Guillotine or blade-type valves, e.g. no passage through the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0227—Packings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a supercritical high-performance integrally-forged soft and hard double-seal closed valve which comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve inlet is arranged at the left end of the valve body, and a valve outlet is arranged at the right end of the valve body; the valve cavity is internally and vertically provided with a left flashboard and a right flashboard respectively, a valve rod is arranged between the left flashboard and the right flashboard, two ends of the valve rod are fixedly connected with the left flashboard and the right flashboard respectively and support the left flashboard to be in sealing contact with the valve body and cover the valve inlet respectively, the right flashboard is in sealing contact with the valve body and cover the valve outlet, and a plurality of holes are uniformly distributed on the left flashboard; the valve comprises a valve body and is characterized in that a channel for a left gate plate and a right gate plate to enter and exit the valve cavity is arranged at the top of the valve body, a valve cover is arranged in the channel, four open rings, a cushion ring and a hard self-sealing ring are sequentially arranged between the valve cover and the valve body from top to bottom, a cover plate is further arranged on the valve cover, and the cover plate is fixedly connected with the valve cover and pressed on the four open rings. The pressure that the valve can bear increases to 2500Lb from 900Lb, satisfies the big pressure operating mode and uses the demand.
Description
Technical Field
The invention relates to a valve, in particular to a supercritical high-performance integrally-forged soft and hard double-seal closed valve.
Background
Before the ignition of a supercritical power station boiler system is started or after the system is overhauled, the boiler superheater and the reheater must be subjected to hydraulic test, and the closing valve is used as an important isolation device for the hydraulic test, so that the application of the closing valve can bring convenience to the process. Because the welding of the blind plate before pressure testing is omitted, and the work of cutting the blind plate and welding the pipeline after pressure testing is omitted, the construction period is shortened, and the method can be repeatedly used.
The pressure of the transmission closing valve is generally below 900Lb, and the use requirement of a large-pressure working condition cannot be met.
Disclosure of Invention
The invention provides a supercritical high-performance integrally-forged soft and hard double-seal closed valve.
The technical scheme of the invention is as follows:
a supercritical high-performance integrally-forged soft and hard double-seal closed valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve inlet is arranged at the left end of the valve body, a valve outlet is arranged at the right end of the valve body, and the valve inlet and the valve outlet are respectively communicated with the valve cavity; the valve cavity is internally and vertically provided with a left flashboard and a right flashboard respectively, a valve rod is arranged between the left flashboard and the right flashboard, two ends of the valve rod are fixedly connected with the left flashboard and the right flashboard respectively and support the left flashboard to be in sealing contact with the valve body and cover the valve inlet respectively, the right flashboard is in sealing contact with the valve body and cover the valve outlet, and a plurality of holes are uniformly distributed on the left flashboard; the valve comprises a valve body and is characterized in that a channel for a left gate plate and a right gate plate to enter and exit the valve cavity is arranged at the top of the valve body, a valve cover is arranged in the channel, four open rings, a cushion ring and a hard self-sealing ring are sequentially arranged between the valve cover and the valve body from top to bottom, a cover plate is further arranged on the valve cover, and the cover plate is fixedly connected with the valve cover and pressed on the four open rings.
During a hydrostatic test, the valve is adopted, a medium enters from the inlet of the valve, enters the valve cavity through the hole on the left flashboard, and presses the left flashboard and the right flashboard under the pressure action to form a pressure self-tightening sealing structure, so that the left flashboard, the right flashboard and the valve body are in closer sealing contact, the pressure born by the left flashboard and the right flashboard is higher, and the valve body is preferably integrally forged, so that the use requirement under a high-pressure working condition is met; after the test is finished, the guide sleeve is replaced, the left flashboard and the right flashboard are in sealing contact with the valve body, and the left flashboard and the right flashboard are used as pipelines to enter a normal use state.
According to the technical scheme, the valve body is further improved and refined, STL alloy is welded on the valve body to form a hard seal, and PTFE is embedded on the hard seal to form a soft seal; the left flashboard and the valve body, and the right flashboard and the valve body are sealed through hard sealing and soft sealing respectively; the pressure bearing capacity of the double-seal structure is further enhanced by adopting a soft and hard double-seal structure, and can reach 2500 Lb.
The technical scheme is further improved and refined, the upper ends of the left flashboard and the right flashboard respectively extend into the channel, and lifting ring screws are respectively arranged on the upper ends of the left flashboard and the right flashboard; the left flashboard and the right flashboard are convenient to take out for replacement.
The technical scheme is further improved and refined, and the cover plate is provided with lifting ring screws.
The technical scheme is further improved and refined, a sewage draining hole is formed in the bottom of the valve body and communicated with the valve cavity, and a plug screw is arranged in the sewage draining hole; the pollution discharge is convenient.
Further improvement and refinement are made to above-mentioned technical scheme, left flashboard is the plectane, and the left end of valve rod passes left flashboard center, rather than threaded connection, right-hand member and right flashboard fixed connection. The distance between the left flashboard and the right flashboard is convenient to adjust.
The invention has the advantages of reasonable design and simple structure, and the pressure born by the valve can be increased from 900Lb to 2500Lb, thereby meeting the use requirement of a high-pressure working condition.
Drawings
Fig. 1 is a schematic structural diagram (hydrostatic test) of a supercritical high-performance integrally-forged soft and hard double-seal closed valve.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is a structural schematic diagram (in normal use) of a supercritical high-performance integrally-forged soft and hard double-seal closed valve.
In the figure, a valve cavity 2 of a valve body 1, a valve inlet 2, a valve outlet 4, a left flashboard 5, a right flashboard 6, a valve rod 7, a channel 8, a valve cover 9, four open rings 10, a backing ring 11, a hard self-sealing ring 12, a cover plate 13, a hard self-sealing ring 14, a soft self-sealing ring 15, a sewage discharge hole 16 and a plug 17 are arranged.
Detailed Description
As shown in fig. 1-3, a supercritical high-performance integrally-forged soft and hard double-seal closed valve comprises a valve body 1, a valve cavity 2 is arranged in the valve body 1, a valve inlet 3 is arranged at the left end of the valve body 1, a valve outlet 4 is arranged at the right end of the valve body 1, and the valve inlet 3 and the valve outlet 4 are respectively communicated with the valve cavity 2; a left flashboard 5 and a right flashboard 6 are respectively and vertically arranged in the valve cavity 2, a valve rod 7 is arranged between the left flashboard 5 and the right flashboard 5, two ends of the valve rod 7 are respectively and fixedly connected with the left flashboard 5 and the right flashboard 6, the left flashboard 5 is respectively supported to be in sealing contact with the valve body 1 and cover the valve inlet 3, the right flashboard 6 is in sealing contact with the valve body 1 and cover the valve outlet 4, and a plurality of holes are uniformly distributed on the left flashboard 1; the top of the valve body 1 is provided with a channel 8 for the left gate plate 5 and the right gate plate 6 to enter and exit the valve cavity 2, a valve cover 9 is arranged in the channel 8, a four-open ring 10, a backing ring 11 and a hard self-sealing ring 12 are sequentially arranged between the valve cover 9 and the valve body 1 from top to bottom, a cover plate 13 is further arranged on the valve cover 9, and the cover plate 13 is fixedly connected with the valve cover 9 and pressed on the four-open ring 10; STL alloy is welded on the valve body 1 to form a hard seal 14, and PTFE is embedded on the hard seal 14 to form a soft seal 15; the left flashboard 5 and the valve body 1, the right flashboard 6 and the valve body 1 are respectively sealed through a hard seal 14 and a soft seal 15; the upper ends of the left flashboard 5 and the right flashboard 6 respectively extend into the channel 8, and lifting ring screws are respectively arranged on the upper ends of the left flashboard and the right flashboard; the cover plate 13 is provided with a lifting ring screw; a sewage discharge hole 16 is formed in the bottom of the valve body 1, the sewage discharge hole 16 is communicated with the valve cavity 2, and a screw plug 17 is arranged in the sewage discharge hole 16; the left flashboard 5 is a circular board, the left end of the valve rod 7 penetrates through the center of the left flashboard 5 and is in threaded connection with the left flashboard, and the right end of the valve rod is fixedly connected with the right flashboard 6.
The above disclosure is only for the preferred embodiment of the present invention, and is not intended to limit itself, and those skilled in the art should make variations and modifications without departing from the spirit of the present invention.
Claims (6)
1. A supercritical high-performance integrally-forged soft and hard double-seal closed valve comprises a valve body, wherein a valve cavity is arranged in the valve body, a valve inlet is arranged at the left end of the valve body, a valve outlet is arranged at the right end of the valve body, and the valve inlet and the valve outlet are respectively communicated with the valve cavity; the valve is characterized in that a left flashboard and a right flashboard are respectively and vertically arranged in the valve cavity, a valve rod is arranged between the left flashboard and the right flashboard, two ends of the valve rod are respectively and fixedly connected with the left flashboard and the right flashboard and respectively support the left flashboard to be in sealing contact with the valve body and cover the valve inlet, the right flashboard is in sealing contact with the valve body and cover the valve outlet, and a plurality of holes are uniformly distributed on the left flashboard; the valve comprises a valve body and is characterized in that a channel for a left gate plate and a right gate plate to enter and exit the valve cavity is arranged at the top of the valve body, a valve cover is arranged in the channel, four open rings, a cushion ring and a hard self-sealing ring are sequentially arranged between the valve cover and the valve body from top to bottom, a cover plate is further arranged on the valve cover, and the cover plate is fixedly connected with the valve cover and pressed on the four open rings.
2. The supercritical high-performance integrally forged soft and hard double seal closed valve as claimed in claim 1, wherein STL alloy is deposited on the valve body to form a hard seal, and PTFE is deposited on the hard seal to form a soft seal; and the left flashboard and the valve body, and the right flashboard and the valve body are sealed through hard sealing and soft sealing respectively.
3. The supercritical high performance integrally forged soft and hard dual seal closed valve as claimed in claim 1, wherein the upper ends of the left and right gate plates extend into the channel respectively and are provided with lifting ring screws respectively thereon.
4. The supercritical high performance integrally forged soft and hard dual seal shut-off valve according to claim 1 wherein the cover plate is provided with eye screws.
5. The supercritical high performance integrally forged soft and hard double seal closed valve as claimed in claim 1, wherein a blowoff hole is provided at the bottom of the valve body, the blowoff hole is communicated with the valve chamber, and a plug screw is provided in the blowoff hole.
6. The supercritical high performance integrally forged soft and hard dual seal closed valve as claimed in claim 1, wherein the left gate is a circular plate, the left end of the valve stem passes through the center of the left gate and is screwed with the left gate, and the right end of the valve stem is fixedly connected with the right gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265261.5A CN111022673A (en) | 2019-12-11 | 2019-12-11 | Supercritical high-performance integrally-forged soft and hard double-seal closed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911265261.5A CN111022673A (en) | 2019-12-11 | 2019-12-11 | Supercritical high-performance integrally-forged soft and hard double-seal closed valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022673A true CN111022673A (en) | 2020-04-17 |
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ID=70208779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911265261.5A Pending CN111022673A (en) | 2019-12-11 | 2019-12-11 | Supercritical high-performance integrally-forged soft and hard double-seal closed valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111022673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB285221A (en) * | 1927-01-14 | 1928-02-16 | Tom Frederick Gray | Improvements in valves |
| CN1523255A (en) * | 2003-09-11 | 2004-08-25 | 温州市飞球电站阀门制造有限公司 | Electric power driven hydrostatic test block valve for thermal power generation |
| CN201588956U (en) * | 2009-12-01 | 2010-09-22 | 南通国电电站阀门有限公司 | Soft-hard double sealing wedge gate valve |
| CN107289154A (en) * | 2017-06-23 | 2017-10-24 | 南通国电电站阀门股份有限公司 | A kind of HTHP soft and hard seal release pollution discharge type parallel slide valve |
| CN206669215U (en) * | 2017-03-14 | 2017-11-24 | 上海电站阀门厂有限公司 | Valve is blocked up in a kind of water pressure test |
| CN110259998A (en) * | 2019-07-23 | 2019-09-20 | 浙江精嘉阀门有限公司 | A kind of multi-functional weight is relied on oneself dual-seal swing check valve |
-
2019
- 2019-12-11 CN CN201911265261.5A patent/CN111022673A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB285221A (en) * | 1927-01-14 | 1928-02-16 | Tom Frederick Gray | Improvements in valves |
| CN1523255A (en) * | 2003-09-11 | 2004-08-25 | 温州市飞球电站阀门制造有限公司 | Electric power driven hydrostatic test block valve for thermal power generation |
| CN201588956U (en) * | 2009-12-01 | 2010-09-22 | 南通国电电站阀门有限公司 | Soft-hard double sealing wedge gate valve |
| CN206669215U (en) * | 2017-03-14 | 2017-11-24 | 上海电站阀门厂有限公司 | Valve is blocked up in a kind of water pressure test |
| CN107289154A (en) * | 2017-06-23 | 2017-10-24 | 南通国电电站阀门股份有限公司 | A kind of HTHP soft and hard seal release pollution discharge type parallel slide valve |
| CN110259998A (en) * | 2019-07-23 | 2019-09-20 | 浙江精嘉阀门有限公司 | A kind of multi-functional weight is relied on oneself dual-seal swing check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200417 |