CN102808977A - High exhaust check valve of critical and supercritical thermal power generating set valve - Google Patents
High exhaust check valve of critical and supercritical thermal power generating set valve Download PDFInfo
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- CN102808977A CN102808977A CN2012102928932A CN201210292893A CN102808977A CN 102808977 A CN102808977 A CN 102808977A CN 2012102928932 A CN2012102928932 A CN 2012102928932A CN 201210292893 A CN201210292893 A CN 201210292893A CN 102808977 A CN102808977 A CN 102808977A
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Abstract
The invention relates to the field of thermal power valves for critical and supercritical thermal power generating set systems, particularly to a high exhaust check valve of a critical and supercritical thermal power generating set valve, which is characterized in that the left shaft sleeve key of a forced-opening shaft is mounted in the left side shaft pin hole of a valve body and connected with a rocker arm assembly; a forced-opening shaft and a right shaft sleeve are inserted into the right side of the shaft pin hole of the valve body; a right filler press plate stud is screwed into a right bracket; a right filler press plate, a filler, a press sleeve right filler press plate stud, a guide sleeve, a bearing, a bearing gland, an oil cup and a spiral wound gasket are all embedded into the forced-opening shaft, and are matched tightly with the valve body; a filler, a filler press sleeve, a left bracket, a bearing, a bearing gland and a guide sleeve on the left side forced-opening shaft are assembled to be inserted into the forced-opening shaft together with a switch press plate; a forced-opening transmission handle and a forced-closing transmission handle are mounted on the two sides of the forced-opening shaft and then in the cylinder, and a cylinder rear cover and a force-opening cylinder rear cover O ring are mounted; and after the cylinder is assembled, a forced-opening cylinder and a forced-closing cylinder are mounted respectively. The high exhaust check valve can automatically open, and the forced-closing cylinder can automatically and quickly close the valve within 0.5 seconds in case of emergency.
Description
Technical field
The present invention relates to thermoelectricity valve field critical, that supercritical thermal power generator set system uses, relate to specifically that an a kind of m. gigawatt (GW) is critical, the high row of supercritical thermal power unit valve check valve.
Background technique
The high row of critical, overcritical coal fired power generation unit related valve check valve; Be that Swing check valve adds actuator; This valve is installed between high-pressure cylinder and the reheater on the pipeline, prevents that air-flow is unstable and causes and play the protective action of key equipment by the reheater medium into high-pressure cylinder that flows backwards.Such valve does not have actuator outward in the existing technology, can not open automatically, and the shut-in time does not guarantee.Meet urgency can not be in less than 0.5 second automatic-closing valve rapidly.Valve closing can prevent the reheater medium that causes because of air-flow the is unstable into high-pressure cylinder that flows backwards, and plays the protective action to key equipment.
Summary of the invention
In order to solve the problem that above-mentioned existing technology exists, the invention provides high row's check valve, can open automatically, meet urgency close by force cylinder can be in less than 0.5 second automatic-closing valve rapidly.
The technical solution adopted for the present invention to solve the technical problems is:
(1) rocking arm, flap, cotter pin, flap nut, flap nut collar, stop pin are assembled into assembly and place in the valve body, and valve seat is welded on the valve body;
(2) open a left axle sleeve key by force and be installed on (see figure 2) in the valve body left-hand axis pin-and-hole, be connected with rocker arm assembly.Insert strong axle, the right axle sleeve of closing on valve body pivot hole right side;
(3) charge in the pivot hole of valve body both sides, the valve body both sides are screwed into right support double-screw bolt, left socle double-screw bolt.Screw in right hold-down grid double-screw bolt on the right support; Adorn the right hold-down grid nut of right hold-down grid, filler, gland, guide sleeve, bearing, bearing gland, lubricating cup, spirotallic gasket and together be inserted in strong passs spool; Join tightly with valve body, put the right support check washer, tighten the right support nut;
(4) left side is opened the axle place by force and is pressed into filler, filler gland, is screwed into the pressing plate double-screw bolt, puts into left hold-down grid, the panel nut of screwing on.Left socle, bearing, bearing gland, guide sleeve assembling back and switch press plate insert simultaneously opens axle by force, adds the left socle check washer, tightens the left socle nut; Both sides are installed and to be opened the transmission handle by force, close transmission handle, locking nut and left socle plain washer by force; Screw on and mark closely screw.Install slotted pan head screw, following slotted pan head screw, interior switch fixed plate, outer switch fixed plate, position limit switch;
(5) install and to open cylinder by force, close cylinder (seeing Fig. 4,5) by force, open spring cylinder by force, close spring cylinder by force and be bumped into and open cylinder piston rod O shape circle by force, open cylinder bonnet O shape circle by force, cylinder block is installed.Open piston rod by force, close piston rod by force and be bumped into and open piston rod O shape circle by force; Install respectively and open piston by force, close piston by force; Be bumped into and open piston O shape circle by force, tighten the buffering nut, be inserted in respectively and open spring by force, install in the cylinder block after closing spring by force; Cylinder back cover is installed then, is opened cylinder bonnet O shape circle by force, tighten and open the cylinder nut by force, open cylinder double-screw bolt, spring washer by force;
(6) after the cylinder combination; The valve body both sides are installed respectively; Fix with the strong hexagon socket cap head screw that closes the cylinder supports plate, opens the cylinder supports plate by force, install respectively and open cylinder by force, close these two cylinders of cylinder and connect pneumatic element vacuum filter, solenoid valve, rapid escape valve, manual pet valve (see figure 6) by force;
(7) piston rod locking nut, round nut and adjusted position are installed: the R side with open the transmission handle by force and contact; Contact with the strong transmission handle that closes in the L side, flange double-screw bolt during valve body screws in is installed spirotallic gasket, valve gap; Flange check washer and middle flange plain washer are tightened middle flange nut in adding.
The beneficial effect that the present invention has is:
1. valve body adopts shape casting, uniform wall thickness, and in use the anti-stress performance of valve is good, in light weight, and the pipeline load is little;
2. pivot pin is formed with the strong axle that closes by opening axle by force, opens by force between axle and the rocking arm to connect with key, and strong closing between axle and the rocking arm adopts the idle stroke clutch to be connected, and final controlling element only works quick closedown and the valve opening effect of assisting;
3. valve has and opens function by force, when flow during less than the regulation flow, lets and opens the cylinder action by force, and the rotation of the up promotion transmission of piston rod handle drives and opens the axle rotation by force and flap is opened.This damages sealing surface in initial start stage owing to the instability of air-flow causes the flap vibration with regard to preventing;
4. having servo-actuated closes and positive closing two cover independent protection systems.Close, close by force cylinder when opening when opening cylinder by force, flap is in free state, gas flow decision valve opening and closing.This moment, this valve was equivalent to general Swing check valve, and flap is opened with the medium following current, and adverse current is closed.When receiving shutdown signal, make strong pass cylinder pressurized air through the rapid exhaust of fast-discharge valve, pressure spring power abrupt release simultaneously can force valve to be closed rapidly, and the shut-in time was less than 0.5 second;
5. Pneumatic actuator adopts two cylinder movement structures, utilizes the pressure spring accumulation of energy simultaneously of cavity of resorption air inlet piston stroking upward, and a cylinder auxiliary valve is opened, and another cylinder auxiliary valve is closed;
6. drive three position limit switches of axle place position installation by force, can understand the open and close position and the neutral position of valve at any time.
In view of the high row of the present invention check valve, have and can open automatically, meet urgency close by force cylinder can be in less than 0.5 second the advantage of automatic-closing valve rapidly, can carry out extensive use, be a kind of new technology with promotional value.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is high row's check valve structural representation;
Fig. 2 is high row's check valve pivot pin part scheme of installation;
Fig. 3 is the Pneumatic actuator structural representation;
Fig. 4 is the strong cylinder schematic representation that closes in the Pneumatic actuator;
Fig. 5 opens the cylinder schematic representation by force in the Pneumatic actuator;
Fig. 6 opens cylinder by force, closes cylinder pneumatic principle schematic representation by force;
Open cylinder when Fig. 7 is valve open by force, close cylinder adjusted position schematic representation by force;
Fig. 8 is that valve closing is opened cylinder when opening by force, closed cylinder adjusted position schematic representation by force;
Reference character shown in Fig. 1～Fig. 8 is following: 1, valve body, 2, valve seat, 3, flap, 4, rocking arm, 5, the flap nut collar, 6, the flap nut, 7, cotter pin; 8, stop pin, 9, spirotallic gasket, 10, valve gap, 11, middle flange plain washer, 12, middle flange check washer, 13, middle flange nut, 14, middle flange double-screw bolt; 15, lifting bolt, 16, open cylinder by force, 17, close cylinder by force, 18, open the transmission handle by force, 19, guide sleeve, 20, bearing gland, 21, bearing; 22, open axle by force, 23, left axle sleeve, 24, key, 25, the strong axle that closes, 26, the right support check washer, 27, the right support nut; 28, right support double-screw bolt, 29, filler, 30, left hold-down grid, 31, right hold-down grid, 32, lubricating cup, 33, locking nut; 34, close the transmission handle by force, 35, right support, 36, right hold-down grid double-screw bolt, 37, right hold-down grid nut, 38, spirotallic gasket, 39, right axle sleeve; 40, left socle plain washer, 41, left socle, 42, the pressing plate double-screw bolt, 43, panel nut, 44, the filler gland, 45, the left socle check washer; 46, left socle double-screw bolt, 47, the left socle nut, 48, open piston by force, 49, open the cylinder double-screw bolt by force, 50, open the cylinder nut by force, 51, open spring cylinder by force; 52, open cylinder piston rod O shape circle by force, 53, open piston rod by force, 54, cylinder back cover, 55, open cylinder bonnet O shape circle by force, 56 cylinder block, 57, open piston O shape circle by force; 58, buffering nut, 59, open piston rod O shape circle by force, 60, open spring by force, 61, spring washer, 62, hexagon socket cap head screw, 63, close the cylinder supports plate by force; 64, piston rod locking nut, 65, round nut, 66, position limit switch, 67, mark closely screw, 68, interior switch fixed plate, 69, go up slotted pan head screw; 70, switch press plate, 71, outer switch fixed plate, 72, open the cylinder supports plate by force, 73, close piston rod by force, 74, close spring cylinder by force, 75, close piston by force; 76, close spring by force, 77, following slotted pan head screw, 78, vacuum filter, 79, solenoid valve, 80, rapid escape valve, 81, manual pet valve.
Embodiment
In conjunction with Fig. 1～Fig. 8, the high row of the present invention check valve structure is further specified:
(1) Rocker arm 4, flap 3, cotter pin 7, flap nut 6, flap nut collar 5, stop pin 8 are assembled into assembly and place in the valve body 1, and valve seat 2 is welded on the valve body 1;
(2) open axle 22 left axle sleeves 23 keys 24 by force and be installed on (see figure 2) in the valve body 1 left-hand axis pin-and-hole, be connected with the Rocker arm 4 assembly.Insert strong axle 25, the right axle sleeve 39 of closing on valve body 1 pivot hole right side;
(3) charge 29 in the valve body 1 both sides pivot hole, valve body 1 both sides are screwed into right support double-screw bolt 28, left socle double-screw bolt 46.Screw in right hold-down grid double-screw bolt 36 on the right support 35; Adorn the right hold-down grid nut of right hold-down grid 31, filler 29, gland 37, guide sleeve 19, bearing 21, bearing gland 20, lubricating cup 32, spirotallic gasket 38 and together be inserted in strong passs spools 25; Join tightly with valve body 1; Put right support check washer 26, tighten right support nut 27;
(4) left side is opened axle 22 places by force and is pressed into filler 29, filler gland 44, is screwed into pressing plate double-screw bolt 42, puts into left hold-down grid 30, the panel nut 43 of screwing on.Left socle 41, bearing 21, bearing gland 20, guide sleeve 19 assembling backs and switch press plate 70 insert simultaneously opens axle 22 by force, adds left socle check washer 45, tightens left socle nut 47; Both sides are installed and to be opened transmission handle 18 by force, close transmission handle 34, locking nut 33 and left socle plain washer 40 by force; Screw on and mark closely screw 67.Install slotted pan head screw 69, following slotted pan head screw 77, interior switch fixed plate 68, outer switch fixed plate 71, position limit switch 66;
(5) install and to open cylinder 16 by force, close cylinder 17 (seeing Fig. 4,5) by force, open spring cylinder 51 by force, close spring cylinder 74 by force and be bumped into and open cylinder piston rod O shape circle 52 by force, open cylinder bonnet O shape circle 55 by force, cylinder block 56 is installed.Open piston rod 53 by force, close piston rod 73 by force and be bumped into and open piston rod O shape circle 59 by force; Install respectively and open piston 48 by force, close piston 75 by force; Be bumped into and open piston O shape circle 57 by force, tighten buffering nut 58, be inserted in respectively and open spring 60 by force, close spring 76 backs by force and install in the cylinder block 56; Cylinder back cover 54 is installed then, is opened cylinder bonnet O shape circle 55 by force, tighten and open cylinder nut 50 by force, open cylinder double-screw bolt 49, spring washer 61 by force;
(6) after the cylinder combination; Valve body 1 both sides are installed respectively; With strong close cylinder supports plate 63, to open the hexagon socket cap head screw 62 of cylinder supports plate 72 by force fixing, install respectively and open cylinder 16 by force, close cylinder 17 these two cylinders and connect pneumatic element vacuum filter 78, solenoid valve 79, rapid escape valve 80, manual pet valve 81 (see figure 6)s by force;
(7) piston rod locking nut 64, round nut 65 and adjusted position are installed: the R side with open transmission handle 18 by force and contact; Contact with the strong transmission handle 34 that closes in the L side; Flange double-screw bolt 14 during valve body 1 screws in; Spirotallic gasket 9, valve gap 10 are installed, flange check washer 12 and middle flange plain washer 11 in adding, flange nut 13 in tightening.
Claims (1)
1. critical, the high row of supercritical thermal power unit valve check valve is characterized in that:
(1) rocking arm, flap, cotter pin, flap nut, flap nut collar, stop pin are assembled into assembly and place in the valve body, and valve seat is welded on the valve body;
(2) open a left axle sleeve key by force and be installed in the valve body left-hand axis pin-and-hole, be connected, insert strong axle, the right axle sleeve of closing on valve body pivot hole right side with rocker arm assembly;
(3) charge in the pivot hole of valve body both sides; The valve body both sides are screwed into right support double-screw bolt, left socle double-screw bolt; Screw in right hold-down grid double-screw bolt on the right support, adorn right hold-down grid, filler, the right hold-down grid nut of gland, guide sleeve, bearing, bearing gland, lubricating cup, spirotallic gasket and together be inserted in strong passs spool, join tightly with valve body; Put the right support check washer, tighten the right support nut;
(4) left side is opened the axle place by force and is pressed into filler, filler gland, is screwed into the pressing plate double-screw bolt, puts into left hold-down grid; The panel nut of screwing on; Left socle, bearing, bearing gland, guide sleeve assembling back and switch press plate insert simultaneously opens axle by force, adds the left socle check washer, tightens the left socle nut; Both sides are installed and to be opened the transmission handle by force, close transmission handle, locking nut and left socle plain washer by force; Screw on and mark closely screw; Install slotted pan head screw, following slotted pan head screw, interior switch fixed plate, outer switch fixed plate, position limit switch;
(5) install and to open cylinder by force, close cylinder by force; Open spring cylinder by force, close spring cylinder by force and be bumped into and open cylinder piston rod O shape circle by force, open cylinder bonnet O shape circle by force, cylinder block is installed, open piston rod by force, close piston rod by force and be bumped into and open piston rod O shape circle by force; Install respectively and open piston by force, close piston by force; Be bumped into and open piston O shape circle by force, tighten the buffering nut, be inserted in respectively and open spring by force, install in the cylinder block after closing spring by force; Cylinder back cover is installed then, is opened cylinder bonnet O shape circle by force, tighten and open the cylinder nut by force, open cylinder double-screw bolt, spring washer by force;
(6) after the cylinder combination; The valve body both sides are installed respectively; Fix with the strong hexagon socket cap head screw that closes the cylinder supports plate, opens the cylinder supports plate by force, install respectively and open cylinder by force, close these two cylinders of cylinder and connect pneumatic element vacuum filter, solenoid valve, rapid escape valve, manual pet valve by force;
(7) piston rod locking nut, round nut and adjusted position are installed: the R side with open the transmission handle by force and contact; Contact with the strong transmission handle that closes in the L side, flange double-screw bolt during valve body screws in is installed spirotallic gasket, valve gap; Flange check washer and middle flange plain washer are tightened middle flange nut in adding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210292893.2A CN102808977B (en) | 2012-08-17 | 2012-08-17 | High exhaust check valve of critical and supercritical thermal power generating set valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210292893.2A CN102808977B (en) | 2012-08-17 | 2012-08-17 | High exhaust check valve of critical and supercritical thermal power generating set valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102808977A true CN102808977A (en) | 2012-12-05 |
| CN102808977B CN102808977B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210292893.2A Active CN102808977B (en) | 2012-08-17 | 2012-08-17 | High exhaust check valve of critical and supercritical thermal power generating set valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438250A (en) * | 2013-05-03 | 2013-12-11 | 无锡富盛阀业有限公司 | Swing check valve |
| CN104089055A (en) * | 2014-07-02 | 2014-10-08 | 南通国电电站阀门有限公司 | Supercritical large-caliber two-direction buffer control type check valve |
| CN105042123A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Supercritical Y-shaped internally-hung hard self-sealing flap-turning check valve |
| CN115163868A (en) * | 2022-09-07 | 2022-10-11 | 烟台海悦能源科技有限公司 | Intelligent balance valve of remote control |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188973A (en) * | 1977-12-06 | 1980-02-19 | Anderson, Greenwood & Co. | Check valve |
| CN2104361U (en) * | 1991-05-13 | 1992-05-13 | 山东龙口发电厂 | Hydraulically steam-pumping check valve |
| US5261449A (en) * | 1992-05-15 | 1993-11-16 | Val-Matic Valve And Manufacturing Corp. | Quick change coupling for tilted disc check valve with top mounted dashpot |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | 黄作兴 | Check valve for vapour pumping |
| CN200955611Y (en) * | 2006-10-08 | 2007-10-03 | 兰州高压阀门有限公司 | Pneumatic air-extraction non-return valve |
| CN201416674Y (en) * | 2009-06-03 | 2010-03-03 | 环球阀门集团有限公司 | Steam bleeding check valve |
| CN201513610U (en) * | 2009-09-18 | 2010-06-23 | 鞍钢集团矿业公司 | Novel check valve |
| CN201963963U (en) * | 2010-12-13 | 2011-09-07 | 南方阀门制造有限公司 | Extraction check valve |
-
2012
- 2012-08-17 CN CN201210292893.2A patent/CN102808977B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4188973A (en) * | 1977-12-06 | 1980-02-19 | Anderson, Greenwood & Co. | Check valve |
| CN2104361U (en) * | 1991-05-13 | 1992-05-13 | 山东龙口发电厂 | Hydraulically steam-pumping check valve |
| US5261449A (en) * | 1992-05-15 | 1993-11-16 | Val-Matic Valve And Manufacturing Corp. | Quick change coupling for tilted disc check valve with top mounted dashpot |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | 黄作兴 | Check valve for vapour pumping |
| CN200955611Y (en) * | 2006-10-08 | 2007-10-03 | 兰州高压阀门有限公司 | Pneumatic air-extraction non-return valve |
| CN201416674Y (en) * | 2009-06-03 | 2010-03-03 | 环球阀门集团有限公司 | Steam bleeding check valve |
| CN201513610U (en) * | 2009-09-18 | 2010-06-23 | 鞍钢集团矿业公司 | Novel check valve |
| CN201963963U (en) * | 2010-12-13 | 2011-09-07 | 南方阀门制造有限公司 | Extraction check valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438250A (en) * | 2013-05-03 | 2013-12-11 | 无锡富盛阀业有限公司 | Swing check valve |
| CN104089055A (en) * | 2014-07-02 | 2014-10-08 | 南通国电电站阀门有限公司 | Supercritical large-caliber two-direction buffer control type check valve |
| CN105042123A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Supercritical Y-shaped internally-hung hard self-sealing flap-turning check valve |
| CN115163868A (en) * | 2022-09-07 | 2022-10-11 | 烟台海悦能源科技有限公司 | Intelligent balance valve of remote control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102808977B (en) | 2014-03-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: High discharge check valve for critical and supercritical thermal power unit valves Effective date of registration: 20230927 Granted publication date: 20140319 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2023980059639 |
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