CN200943720Y - Double-seal coal dust pipe inserting plate gate - Google Patents
Double-seal coal dust pipe inserting plate gate Download PDFInfo
- Publication number
- CN200943720Y CN200943720Y CN 200620078838 CN200620078838U CN200943720Y CN 200943720 Y CN200943720 Y CN 200943720Y CN 200620078838 CN200620078838 CN 200620078838 CN 200620078838 U CN200620078838 U CN 200620078838U CN 200943720 Y CN200943720 Y CN 200943720Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- plate
- sealing
- flashboard
- double
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a double-sealed doors coal powder pipeline flashboard gate, consisting of valve body and cylinder rack. Said cylinder rack is provided with electrical control box, one end of said cylinder rack is connected to cylinder, the end of said cylinder piston rod is connected to the flashboard in the valve body, and said valve body is connected to seal air. Said double-sealed doors coal powder pipeline flashboard gate, because air-powered single flashboard structure is adopted, automatic slant compact mechanism is designed between the valve body and flashboard structure, the sealing surface of flashboard and valve body adopt seal structure of metal mechanical hardware sealed with auxiliary seal air. When the flashboard gate closes, flashboard arrives to the scheduled position of the valve body. Under the operation of automatic slant compact mechanism, the sealing surface get closer and closer, after the auxiliary seal air is added, totally isolate the circulating medium in the pipeline and realize no inner leakage.
Description
Technical field
The utility model belongs to thermal power plant Coal-fired Boiler Being powder pipeline barrier means, particularly a kind of double-sealing pulverized coal channel insertion plate door.
Background technique
Existing pulverized coal channel seal arrangement sealing effect is poor, when insertion plate door is closed, because the coal dust that accumulates causes bite, plate can not arrive the predetermined closed position of valve body, and because plate and gate seat can not be adjacent to fully, can not completely cut off the circulation medium in the pipeline fully, so the problem that these barrier means are leaked in can not guaranteeing to solve.
Summary of the invention
The purpose of this utility model provides a kind of plate that can make and arrives the predetermined closed position of valve body, realizes the double-sealing pulverized coal channel insertion plate door of non-internal leakage.
For achieving the above object, the technical solution of the utility model is: a kind of double-sealing pulverized coal channel insertion plate door, connect to form by the gentle jar support of valve body, described cylinder support is provided with electric control box, one end of described cylinder support is connected with cylinder, the termination of the cylinder piston rod of the described cylinder plate interior with being located at valve body is connected, and is communicated with sealing wind inlet on the described valve body.
The sealing surface that described plate contacts with valve body is the inclined-plane hold-down mechanism, is cutting edge shape.
Be formed with sealing wind chamber between described valve body and the plate, described sealing wind chamber is communicated with sealing wind inlet.
Adopt above-mentioned double-sealing pulverized coal channel insertion plate door, owing to adopt pneumatic single spile type structure, design has automatic inclined-plane hold-down mechanism between valve body and plate structure, the sealing surface of plate and valve body adopts the hard sealing of metal machinery to add auxiliary sealing air sealing configuration, when insertion plate door is closed, plate arrives the predetermined closed position of valve body, under the effect of the automatic hold-down mechanism in inclined-plane, the sealing surface of plate and valve body more pastes tighter, and add after the auxiliary sealing wind, circulation medium in the isolated fully pipeline is realized non-internal leakage.At the other dust that must pile up some of body cavity sealing surface, because of the end band radian of plate, angled, resemble " blade " shape, extrude, remove when moving, the dust of inner product on the angled inclined-plane of valve body sealing surface opposite side is unlikely to close not in place because of body cavity sedimentating dust plate.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the plan view of Fig. 1.
Embodiment
Extremely shown in Figure 2 as Fig. 1, this double-sealing pulverized coal channel insertion plate door is connected to form by valve body 4 gentle jar supports 3, described cylinder support 3 is provided with electric control box 1, described electric control box 1 links to each other with electric controling element 2 on being located at cylinder support 3, the top of described cylinder support 3 is connected with cylinder 6, the cylinder piston rod 7 of described cylinder 6 is connected with seal arrangement 9 by coupling arrangement 8, and the termination of described cylinder piston rod 7 is connected with plate 10.Every double-sealing pulverized coal channel insertion plate door is furnished with the electric control box 1 that can insert the DCS automatic control system, and cylinder support 3 and valve body 4 constitute the main body of other part of assembling insertion plate door.The end of cylinder piston rod 7 and plate 10 link to each other under coupling arrangement 8 fixing; When closing, effect lower plugboard 10 in cylinder thrust moves right along the guide pad on the valve body 45, on valve body 4 and plate 10, designed automatic inclined-plane hold-down mechanism 11, it is tighter to force plate 10 sealing surfaces and valve body 4 sealing surfaces more to paste, be installed in position limit switch 13 action and the feedback signals on the cylinder support when arriving closed position, add auxiliary seal wind from sealing wind inlet 12 and make pipeline be in the state that cuts off fully.The sealing surface that described plate 10 contacts with valve body 4 is the inclined-plane hold-down mechanism, is cutting edge shape.Be formed with sealing wind chamber between described valve body 4 and the plate 10, described sealing wind chamber is communicated with sealing wind inlet 12.4 of described plate 10 and valve bodies adopt the inclined-plane hold-down mechanism that plate is pressed on the valve body 4, and plate 10 ends are cutting edge shape.
Above-mentioned double-sealing pulverized coal channel insertion plate door, adopt pneumatic single spile type structure, in order to cut off the circulation medium in the pulverized coal channel, prevent that circulation medium leaks between plate and the valve body sealing surface, the sealing surface of plate 10 and valve body 4 adopts the hard sealing of metal machinery to add auxiliary sealing air sealing configuration, its sealing surface is all through the machining of precision; Design has automatic inclined-plane hold-down mechanism between valve body 4 and plate 10 structures, when insertion plate door is closed, plate 10 arrives the closed position that valve body 4 is scheduled to, under the effect of the automatic hold-down mechanism in inclined-plane, the sealing surface of plate 10 and valve body 4 more pastes tighter, and add after the auxiliary sealing wind, the circulation medium in the isolated fully pipeline is realized non-internal leakage.Single cylinder is realized the sealing that is adjacent to of the switch of plate and plate 10 and valve body 4 sealing surfaces.The structure of plate 10 and valve body 4 has the function of removing valve body inner product dust, during plate 10 opens wide, at the other dust that must pile up some of valve body 4 bore seal faces, when closing insertion plate door, plate 10 arrives the closed position that valve body 4 is scheduled to, under the effect of driving force, plate 10 is adjacent to valve body 4 sealing surfaces gradually along moving on the inclined-plane of automatic inclined-plane hold-down mechanism; Because of the end band radian of plate 10, angled, resemble cutting edge shape, to extrude in the time of mobile, remove, the dust of inner product is unlikely to close not in place because of valve body 4 inner chamber sedimentating dust plates 10 on the angled inclined-plane of valve body 4 sealing surface opposite sides.This point also is that other insertion plate door is not available.That valve body 4 adopts is heat-resisting, Wear Resisting Steel or heat-resistance stainless steel cast inblock structure, compare with like product and to have stronger thermal deformation resistant and corrosion-resistant, abrasion resistance properties, avoided that under high temperature condition valve body 4 and plate 10 cause because of thermal distortion takes place that sealability lost efficacy, the possibility of clamping stagnation when plate 10 slides, stuck, dust stratification, the sealing surface of valve body 4 has been taked special process built-up welding abrasion resistance alloy, compare with the insertion plate door of the Ordinary Steel structure of using at present the working life of product, life-span improves more than three times, but cost is more or less the same; Overcome washing away for a long time simultaneously because of band pressure coal dust in the pipeline, the sealing of product generation in a short time reduces, the open and close function that influences the pulverized coal channel plate of unfavorable factors such as shortening in working life is better than the isostructural open and close mode of board-like tooth bar transmission, screw pair transmission, chain in the past, have simple and direct, open wide or cut off the dust medium of circulation in the pipeline reliably, accurately and rapidly.
Double-sealing pulverized coal channel insertion plate door is under the effect of driving force, the plate that cylinder piston rod 7 push-and-pulls link to each other with it, plate 10 moves on wear-resistant seal device and guide pad 5, when arriving closed position, close whole flow channels along sealing surface, remove simultaneously and accumulate at the other medium of sealing surface, plate 10 is under the effect of the automatic hold-down mechanism in inclined-plane, force plate 10 sealing surfaces to be close to valve body 4 sealing surfaces, add sealing wind in the sealing wind chamber by 12 formation between valve body 4 and plate 10 of sealing wind inlet, fully guarantee the sealing of insertion plate door, interior leakage is zero.When opening, under the effect of driving force, plate 10 to be extracted out, medium is expedite passing through in whole flow channels.
During unlatching, cut off the auxiliary seal wind of sealing wind inlet, effect lower plugboard 10 at the cylinder pulling force moves up along the guide pad on the valve body 45, automatically the inclined-plane hold-down mechanism makes plate 10 sealing surfaces leave valve body 4 sealing surfaces, when arriving the enable possition, position limit switch 13 action and feedback signals make pipeline be in the state that opens wide fully.
Close the door: insertion plate door is shown in an open position, send the instruction of closing the door to electric control box 1, the electric selector valve action of electric controling element 2 execution commands, cylinder 6 promotes plate 10 by cylinder piston rod 7 and arrives the position of closing the door, automatically the inclined-plane hold-down mechanism forces plate 10 sealing surfaces to be adjacent to valve body 4 sealing surfaces gradually, position limit switch 13 action feedback complete shut-down signals add auxiliary seal wind from sealing wind inlet 12, finish the action of closing the door.
Open the door: insertion plate door is in the closed position, send the instruction of opening the door to electric control box 1, cut off sealing wind from sealing wind inlet 12, the electric controling element execution command, electric selector valve action, cylinder 6 pulls to the enable possition by cylinder piston rod 7 with plate 10, and position limit switch 13 actions and feedback standard-sized sheet signal are finished the action of opening the door.
Operating temperature :-30～450 ℃.
Velocity of medium :≤40m/s.
Driving mode: pneumatic or electronic, manual.
Control mode: automatically controlled and manual on the spot, can incorporate the DCS automatic control system into.
Bleed pressure: 0.5～0.8Mpa.
Sealing wind air pressure: greater than medium working pressure 2Kpa.
Outer leak rate: 0.
Turn-off time: one way 3～10 seconds.
Claims (3)
1. double-sealing pulverized coal channel insertion plate door, connect to form by the gentle jar support of valve body (4) (3), it is characterized in that: described cylinder support (3) is provided with electric control box (1), one end of described cylinder support (3) is connected with cylinder (6), the termination of the cylinder piston rod (7) of described cylinder (6) plate (10) interior with being located at valve body (4) is connected, and is communicated with sealing wind inlet (12) on the described valve body (4).
2. double-sealing pulverized coal channel insertion plate door according to claim 1 is characterized in that: adopt the inclined-plane hold-down mechanism that plate is pressed on the valve body (4) between described plate (10) and valve body (4), plate (10) end is cutting edge shape.
3. double-sealing pulverized coal channel insertion plate door according to claim 1 is characterized in that: be formed with sealing wind chamber between described valve body (4) and the plate (10), described sealing wind chamber is communicated with sealing wind inlet (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078838 CN200943720Y (en) | 2006-04-15 | 2006-04-15 | Double-seal coal dust pipe inserting plate gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078838 CN200943720Y (en) | 2006-04-15 | 2006-04-15 | Double-seal coal dust pipe inserting plate gate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200943720Y true CN200943720Y (en) | 2007-09-05 |
Family
ID=38718351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620078838 Expired - Lifetime CN200943720Y (en) | 2006-04-15 | 2006-04-15 | Double-seal coal dust pipe inserting plate gate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200943720Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062225A (en) * | 2011-02-12 | 2011-05-18 | 上海科发泵阀制造有限公司 | Open ash valve |
| CN102359614A (en) * | 2011-09-14 | 2012-02-22 | 成都海科机械设备制造有限公司 | Gate valve |
| CN104806776A (en) * | 2015-05-12 | 2015-07-29 | 江苏五星波纹管有限公司 | Double-inserting plate type blocking door |
| CN108953665A (en) * | 2018-07-05 | 2018-12-07 | 上海美科阀门有限公司 | One kind having cleaning function high temperature and pressure multichannel shunt reversing valve |
-
2006
- 2006-04-15 CN CN 200620078838 patent/CN200943720Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062225A (en) * | 2011-02-12 | 2011-05-18 | 上海科发泵阀制造有限公司 | Open ash valve |
| CN102359614A (en) * | 2011-09-14 | 2012-02-22 | 成都海科机械设备制造有限公司 | Gate valve |
| CN102359614B (en) * | 2011-09-14 | 2012-11-21 | 成都海科机械设备制造有限公司 | Gate valve |
| CN104806776A (en) * | 2015-05-12 | 2015-07-29 | 江苏五星波纹管有限公司 | Double-inserting plate type blocking door |
| CN108953665A (en) * | 2018-07-05 | 2018-12-07 | 上海美科阀门有限公司 | One kind having cleaning function high temperature and pressure multichannel shunt reversing valve |
| CN108953665B (en) * | 2018-07-05 | 2023-11-03 | 上海美科阀门有限公司 | High-temperature high-pressure multichannel shunt reversing valve with cleaning function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN200943720Y (en) | Double-seal coal dust pipe inserting plate gate | |
| CN109458466B (en) | Front end gate for shield machine | |
| CN102042159B (en) | Stepped closing device capable of adjusting closing rate of pumped storage group | |
| CN101695839A (en) | Hydraulic flexible cable cutting knife | |
| CN206320326U (en) | It is double to block wear-resistant sluice valve | |
| CN111720572A (en) | Gate valve | |
| CN200963808Y (en) | Valve converting tool | |
| CN2373643Y (en) | High-temperature resistant gas steel plate sluice valve | |
| CN200995476Y (en) | Fillet welder of gate sealed strips | |
| CN209196155U (en) | A kind of Novel gate valve of gear driving | |
| CN112963554A (en) | Large-scale double-channel sealing valve with good sealing performance | |
| CN201121721Y (en) | Three-eccentric metal sealing butterfly valve | |
| CN2654964Y (en) | Inverted plate type double sealing double opening and closing reversing valve for high-temp smoke and air | |
| CN212144613U (en) | Area is pressed mouth gag suitable for pipeline installs gate valve additional | |
| CN110668068A (en) | Directional conveying switching valve | |
| CN202580076U (en) | Gate valve with replaceable valve seats | |
| CN201753772U (en) | Hydraulic push rod type double-valve-plate valve | |
| CN202100727U (en) | Improved filter gate valve | |
| CN209990916U (en) | Primary and secondary valve of steam turbine | |
| CN203686197U (en) | Double-plugboard hot-air-isolating door | |
| CN201351739Y (en) | Integral frame type gate valve | |
| CN210510359U (en) | Pneumatic ball valve with locking device | |
| CN2692434Y (en) | Automatic exhaust valve | |
| CN1673587A (en) | Double-spile cut off valve for large-bore gas-delivering pipeline | |
| CN109357031A (en) | The Novel gate valve of gear driving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070905 |
|
| EXPY | Termination of patent right or utility model |