CN102767627A - Rapid pneumatic automatically-controlled gas safety shut-off valve - Google Patents
Rapid pneumatic automatically-controlled gas safety shut-off valve Download PDFInfo
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- CN102767627A CN102767627A CN2012102043820A CN201210204382A CN102767627A CN 102767627 A CN102767627 A CN 102767627A CN 2012102043820 A CN2012102043820 A CN 2012102043820A CN 201210204382 A CN201210204382 A CN 201210204382A CN 102767627 A CN102767627 A CN 102767627A
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Abstract
The invention discloses a rapid pneumatic automatically-controlled gas safety shut-off valve which comprises a valve body and a cylinder which are connected. The valve body is cylindrical and provided with a sealing seat and a sealing pressure ring sequentially from outside to inside, the sealing seat and the sealing pressure ring are mounted on a butterfly plate, a valve rod connected with the cylinder penetrates through the whole valve body, a support is arranged at the joint of the valve body and the cylinder, one end of the valve rod is positioned in the support, the valve body and the valve rod are of an eccentric structure, namely, the rotating center of the valve rod deviates from the center of the valve body, and the valve body and the butterfly plate are of an eccentric structure, namely, the center of the valve body deviates from the center of the butterfly plate. The rapid pneumatic automatically-controlled gas safety shut-off valve is of an eccentric multilayer hard-sealing contact seal structure, so that the valve is hermetically and automatically compensated when closed, the valve shut-off speed is higher, and air tightness is higher.
Description
Technical field
The present invention relates to a kind of safety cut-off valve, relate in particular to a kind of pneumatic automatic control gas quick safety cut-off valve.
Background technique
At present, in the various Industrial Stoves that with coal gas are fuel, adopt low-pressure gas to burn mostly and chew, by special fan combustion-supporting air is provided, most kiln adopts air preheater.This Industrial Stoves in case coal gas and air pressure are low excessively, burn when chewing cisco unity malfunction in process of production, should only in this way just can guarantee production safety immediately with gas cutting and stall blower fan (except the particular case), are unlikely to stove again and turn cold rapidly.Even, when coal gas or air low pressure, might get into airduct through the mixer coal gas that burning is chewed if coal gas fails to cut off; Or air gets into gas pipe line, and the airduct of Preheating unit is particularly arranged, and can form a negative pressure because temperature descends; More be prone to make coal gas to get into airduct; Then form volatile mixture in airduct or in the stove, when lighting a fire once more, tend to set off an explosion, lead to a disaster.
Coal gas or air generation low pressure reason are a lot; Wherein also comprise the coal gas or the air low pressure that cause owing to having a power failure; General gas stop valve is by gas, liquid, electrically driven (operated) now; This kind device is having a power failure. and just can't operate during gas, therefore such device can not reach the effect of safety protection to the coal gas air low pressure that causes because of power failure.
Summary of the invention
The invention discloses a kind of pneumatic automatic control gas quick safety cut-off valve, be a kind of automatic controlling plumbing fixtures pressure medium, have superelevation, the function of reporting to the police and cutting off automatically during low pressure.Shortcomings such as present domestic electricity commonly used, the cut-off valve cut-off velocity of surging are slow, control complicacy have not only been overcome; And in outage. also can cut off coal gas immediately during gas; Guaranteeing production safety, is a kind of device that in the various industrial furnace production safeties that are fuel, is suitable for coal gas.
For realizing the foregoing invention purpose, the present invention realizes through following technical proposals:
Pneumatic automatic control gas quick safety cut-off valve is connected to form by valve body and pneumatic actuator, and said valve body is cylindric; Be followed successively by sealing seat, sealing trim ring from outside to inside, sealing seat is installed in butterfly plate with the sealing trim ring, and the valve rod that is connected with pneumatic actuator passes whole valve body and gets into pneumatic actuator; Valve body and pneumatic actuator joint are support; Said valve rod passes in the support, and wherein said valve body and valve rod are eccentric structure, and promptly there is skew at valve rod center of rotation and valve body center; Said valve body and said butterfly plate are eccentric structure, and there is skew at promptly said valve body center and said butterfly plate center.
Wherein, the part that valve rod is positioned at support is socketed with gland, is provided with filler between valve rod and the support; Said pneumatic actuator and support connection part are provided with worm gear, and said worm gear can close with manually opening when power failure is stopped the supple of gas or steam.
Wherein, Said pneumatic actuator is made up of source of the gas three linked piece, solenoid valve, pneumatic actuator, spring, baffler; Wherein said source of the gas three linked piece, solenoid valve, spring are installed in the pneumatic actuator; Said baffler is installed on the automatic control pressure vent of pneumatic actuator and is used to eliminate noisy sound, and the end that said valve rod passes pneumatic actuator is connected with limit switch.
Wherein, said source of the gas three linked piece is provided with total gas source inlet, and said source of the gas three linked piece is connected with solenoid valve.
Adopt technique scheme can produce following technique effect:
1. sealing compensation automatically when the structure of employing eccentric structure, multilayer hard-seal contact seal makes valve closing, a plurality of bigger eccentric structures make the valve cut-off velocity faster, and tightness is higher.
2. when running into power failure, gas, utilize bullet Huang in the final controlling element to rely on oneself and cut off sealing, safe and reliable, can reach the standard of zero leakage safe handling entirely.
Solenoid valve air feed when its working principle of cut-off valve of the present invention is the butterfly valve body proper functioning, its tractive force are enough to make the spring in the pneumatic actuator to shrink, and this moment, valve length was opened normal supply coal gas.
Further, said solenoid valve is connected with controller outside, the power supply of control electromagnetic valve.
Wherein, said controller is installed on the instrument front by instrument to be formed, and instrument input place is provided with the input point status indicator lamp, and said instrument outlet is provided with LED and is used for showing output and indication " warning " signal; Said gauge internal is provided with buzzer and relay, and said relay is connected with external news Chinese percussion instrument, and said instrument front is provided with mute button and is used to control external news Chinese percussion instrument and inner buzzer.
Preferably, above-mentioned its technical specification of controller is: each input point status indicator lamp: six LED lamps refer to the upper limit, the upper limit, following lower limit, lower limit respectively.Wherein four is one to four road alarm indicator lamps, and two is position indicator in addition; Input signal: relay on/off switching value signal and Transistor-Transistor Logic level signal; Output: LED shows output, indication " warning " signal; Gauge internal is provided with buzzer; The relay on/off is controlled external news and is rung device, and prompting has " warning " signal, lets with the mute button on the instrument front and interrogates Chinese percussion instrument and inner buzzer " ring ".Control valve power supply output, when reporting to the police, the valve outage.
Through above-mentioned setting, pneumatic automatic control gas quick safety cut-off valve system installation connection, the check finish errorless after, send to controller.When valve reaches, pinned automatically by lock pin, make cut-off valve keep opening position (it is bright that tutorial light left by valve), the safety cut-off butterfly valve promptly gets into automatic safe working state (fed sheet of a media).When in case coal gas, air or other control media parameters transfinite; The existing flashing lamp of flashing signal alarming controller shows and sends audible alarm; Simultaneously on-the-spot the power failure. supply power immediately electricity, the source of the gas of the solenoid valve that makes safety cut-off valve of UPS closes that the yellow return of bullet drives the valve plate rotation in the final controlling element in the control box, cuts off coal gas rapidly to guarantee production safety." off-position " tutorial light is bright, machine emergency switching-off state.Treat that accident treatment finishes, after each Control Parameter was recovered normally, cut-off valve promptly got into the automatic safe working state again.
Further, said pneumatic automatic control gas quick safety cut-off valve also is connected with diffuse si piezoresistance type pressure transmitter, and said diffuse si piezoresistance type pressure transmitter is installed on the medium pipeline.
Further, in order to realize zeroing and demarcate indication that said diffuse si piezoresistance type pressure transmitter is circumscribed with pressure gauge, is used for feedback pressure signal.
Through controller and pressure transmitter are set, realized following effect:
Low or when being higher than permitted value or other medium parameters and transfiniting when coal gas or combustion-supporting air pressure; Pressure transmitter through supporting sends warning, and controller receives that the signal immediate instruction is to pneumatic actuator work. by pneumatic actuator operated valve emergency cut-off pipeline medium.When high and low pressure is got back to when setting permitted value, controller receives that the signal automatic command that pressure transmitter sends opens valve plate to pneumatic actuator, normal supply coal gas.During situation such as high low pressure is reported to the police when occurring, on-the-spot power failure, make solenoid valve by USP out-put supply in the control box, the interior spring return of final controlling element that cuts off source of the gas cuts off valve.When high and low pressure was got back to normal permitted value, control box USP received that instruction cuts off the power supply immediately, and source of the gas was supplied with pneumatic actuator and started working this moment, valve open normal supply coal gas, thus realized automatic cut-out and opened.After intact each parameter of high and low pressure accident treatment is normal; Normal supply coal gas; This moment is the normal return of parameter all; The USP of controller begins to dash electricity and waits for task under the valve; No longer need manual operation after the microcomputer program of above working procedure parameter in controller set, control system can be according to program automatic control work, thereby avoided traditional needs manual work operation of getting on. time-consuming not only dangerous, have potential safety hazard, will supply power for a long time when working. it is bad that solenoid valve is received serious an ancient egg-shaped, holed wind instrument working life. but also waste technological deficiency such as power supply.
Accordingly, the invention discloses a kind of controlling method that is used for pneumatic automatic control gas quick safety cut-off valve, comprise the steps: to detect through pressure transmitter whether the coal gas medium parameter transfinites in the pipeline; Controller receives the testing result signal that pressure transmitter transmits; Controller instruction pneumatic actuator opens or closes valve and makes solenoid valve energising or outage.
Through above-mentioned technological improvement; Pneumatic automatic control gas quick safety cut-off valve of the present invention has not only overcome shortcomings such as present domestic electricity commonly used, the cut-off valve cut-off velocity of surging are slow, control complicacy, and when outage, gas, also can cut off coal gas immediately, guarantees production safety; Have simple in structure; Easy to operate, reliable operation, cut-off velocity is less than advantages such as 1 second and favorable sealing properties.
Description of drawings
Fig. 1 is the structural profile schematic representation of the pneumatic automatic control gas quick of the present invention safety cut-off valve;
Fig. 2 is the circuit connection diagram that is used for controller of the present invention;
Fig. 3 a, 3b connect schematic representation, circuit theory diagrams for being used for diffuse si piezoresistance type pressure transmitter of the present invention;
Fig. 4 a, 4b are controller, diffuse si piezoresistance type pressure transmitter scheme of installation under different application.
Embodiment
In following examples, the invention provides the concrete process parameter of each used device, this only is the needs in order to clearly demonstrate.According to different application environments and condition, can select or change to the parts of other specifications parameters, perhaps change the Placement between the parts, this variation still belongs to protection scope of the present invention.
With reference to figure 1; Pneumatic automatic control gas quick safety cut-off valve of the present invention is connected to form by valve body 1 and pneumatic actuator 13, and valve body 1 is cylindric; Sealing seat (claiming valve seat again) 2, sealing trim ring 3 are installed from outside to inside successively; Sealing seat is installed in butterfly plate 4 with the sealing trim ring, and the valve rod 5 that is connected with pneumatic actuator passes whole valve body and gets into pneumatic actuator, and valve body and pneumatic actuator joint are support 8; Wherein valve body 1 is an eccentric structure with valve rod 5, and promptly there is skew at valve rod center of rotation and valve body center; Valve body 1 is an eccentric structure with butterfly plate 4, and promptly there is skew at valve body center and butterfly plate center.
It will be understood by those skilled in the art that above-mentioned said skew refers to not overlapping of position, the geometry home positions that how much home positions that for example valve body is corresponding and butterfly plate are corresponding are different; The central axis that valve rod rotates does not overlap with the diameter line of valve body centre section.
Wherein, the part that valve rod is positioned at support is socketed with gland 7, is provided with filler 6 between valve rod and the support.
Wherein, pneumatic actuator and support connection part are provided with worm gear 9, and said worm gear is provided with rotating handles; Pneumatic actuator is made up of the baffler 14 of its inner source of the gas three linked piece 11 that is provided with total gas source inlet of position what, the solenoid valve 12 that is connected with source of the gas three linked piece 11, spring 15 and position what outlet valve, and the end that valve rod passes pneumatic actuator is connected with limit switch 10.
With reference to figure 2; The controller outside that is connected with solenoid valve, an end are relay (be the DZ47-2P miniature circuit breaker shown in the figure, N, L represent zero line, live wire respectively); One end connects solenoid valve (24V voltage), and miscellaneous part is respectively parts such as regulating resistance, switch.
With reference to figure 3a,, be installed on the access medium pipeline and the external pressure on the number Table A that is used to demarcate indication and zeroing ' for being used for diffuse si piezoresistance type pressure transmitter of the present invention (A, B are respectively its both positive and negative polarity, and R is load); Fig. 3 b has shown its circuit theory (P representative input, I representative output, A ' represent the pressure medium table, and R represents load, and U represents DC electrical source).During practical application, adjust: open the terminal box of transmitter, when pressure is zero, transfer " zeroing " potentiometer, make standard amperemeters be designated as 4.00mA according to following steps; Add full scale pressure, transfer " demarcation " potentiometer, make ammeter be designated as 20.00mA; The 1st, the 2 steps terminal box terminal cap of twice or thrice screwing on again repeatedly.
Shown respectively that with reference to figure 4a, 4b transmitter and controller are installed to the schematic representation on the pipeline under different installation environments, Fig. 4 a has shown that in hydrostatic (under the pipeline environment such as pond, well) transmitter 42 and controller 43 are installed to the Placement of pipeline 41; Fig. 4 b has shown the Placement in flowing environment.41 represent pipeline in wherein scheming, and 42 represent display board or the terminal box (promptly representing transmitter) on the transmitter, and 43 represent controller.
Claims (10)
1. pneumatic automatic control gas quick safety cut-off valve is connected to form by valve body and pneumatic actuator, and said valve body is cylindric; Be followed successively by sealing seat, sealing trim ring from outside to inside, sealing seat is installed in butterfly plate with the sealing trim ring, and the valve rod that is connected with pneumatic actuator passes whole valve body and gets into pneumatic actuator; Valve body and pneumatic actuator joint are support; Said valve rod passes in the support, it is characterized in that said valve body and valve rod are eccentric structure, and promptly there is skew at valve rod center of rotation and valve body center; Said valve body and said butterfly plate are eccentric structure, and there is skew at promptly said valve body center and said butterfly plate center.
2. pneumatic automatic control gas quick safety cut-off valve according to claim 1 is characterized in that the part that valve rod is positioned at support is socketed with gland, is provided with filler between valve rod and the support.
3. pneumatic automatic control gas quick safety cut-off valve according to claim 1 is characterized in that said pneumatic actuator and support connection part are provided with worm gear, and said worm gear is provided with rotating handles and is used for the hand switch valve.
4. pneumatic automatic control gas quick safety cut-off valve according to claim 1; It is characterized in that said pneumatic actuator is made up of source of the gas three linked piece, solenoid valve, spring, baffler; Wherein said source of the gas three linked piece, solenoid valve, spring are installed in the pneumatic actuator; Said baffler is installed on the pneumatic actuator automatic control pressure vent, and the end that said valve rod passes pneumatic actuator is connected with limit switch.
5. pneumatic automatic control gas quick safety cut-off valve according to claim 4 is characterized in that said source of the gas three linked piece is provided with total gas source inlet, and said source of the gas three linked piece is connected with solenoid valve.
6. pneumatic automatic control gas quick safety cut-off valve according to claim 4 is characterized in that said solenoid valve is connected with controller outside, and said controller is installed on the instrument front by instrument forms the power supply of control electromagnetic valve.
7. pneumatic automatic control gas quick safety cut-off valve according to claim 6 is characterized in that input place of said instrument is provided with the input point status indicator lamp, and said instrument outlet is provided with LED and is used for showing output and indication alarm signal; Said gauge internal is provided with buzzer and relay, and said relay is connected with external news Chinese percussion instrument, and said instrument front is provided with mute button and is used to control external news Chinese percussion instrument and inner buzzer.
8. pneumatic automatic control gas quick safety cut-off valve according to claim 1 is characterized in that also being connected with diffuse si piezoresistance type pressure transmitter, and said diffuse si piezoresistance type pressure transmitter is installed on the medium pipeline.
9. pneumatic automatic control gas quick safety cut-off valve according to claim 8 is characterized in that said diffuse si piezoresistance type pressure transmitter is circumscribed with pressure gauge and is used for feedback pressure signal.
10. a controlling method that is used for pneumatic automatic control gas quick safety cut-off valve comprises the steps: to detect through pressure transmitter whether the coal gas medium parameter transfinites in the pipeline; Controller receives the testing result signal that pressure transmitter transmits; Controller instruction pneumatic actuator opens or closes valve and makes solenoid valve energising or outage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102043820A CN102767627A (en) | 2012-06-20 | 2012-06-20 | Rapid pneumatic automatically-controlled gas safety shut-off valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102043820A CN102767627A (en) | 2012-06-20 | 2012-06-20 | Rapid pneumatic automatically-controlled gas safety shut-off valve |
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| CN102767627A true CN102767627A (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102043820A Pending CN102767627A (en) | 2012-06-20 | 2012-06-20 | Rapid pneumatic automatically-controlled gas safety shut-off valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333162A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Automatic regulating valve disc |
| CN106755679A (en) * | 2017-01-17 | 2017-05-31 | 山东钢铁集团日照有限公司 | A kind of top gas stop valve |
| WO2022105488A1 (en) * | 2020-11-17 | 2022-05-27 | 宁夏佰斯特医药化工有限公司 | Intelligent fireproof pneumatic actuating mechanism for valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1171685B (en) * | 1958-04-21 | 1964-06-04 | Karl Adams | Flap valve with differential piston |
| CN2051319U (en) * | 1989-03-27 | 1990-01-17 | 浙江省瑞安市仪表三厂 | Rapid cut-off regulating butterfly valve |
| CN2457407Y (en) * | 2000-12-21 | 2001-10-31 | 启东阀门厂 | Intelligent emergency fast cut-off valve |
| KR20020074380A (en) * | 2001-03-19 | 2002-09-30 | 케이.비.(주) | Butterfly valve |
| CN1611823A (en) * | 2003-10-30 | 2005-05-04 | 上海海星阀门总厂 | Pneumatic and manual high corrosion resistance two-way sealed butterfly valve |
| CN200940722Y (en) * | 2006-01-09 | 2007-08-29 | 洛阳维信特种设备有限公司 | Quick reset device for pneumatic butterfly valve under accidenty state |
| CN201212560Y (en) * | 2008-05-05 | 2009-03-25 | 江苏神通阀门股份有限公司 | Safety casing isolation butterfly valve |
| CN201306453Y (en) * | 2008-12-03 | 2009-09-09 | 黄剑峰 | Three-dimensional eccentric butterfly valve |
| CN202768889U (en) * | 2012-06-20 | 2013-03-06 | 朱崇新 | Pneumatic self-controlled fast safety shut-off valve for coal gas |
-
2012
- 2012-06-20 CN CN2012102043820A patent/CN102767627A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1171685B (en) * | 1958-04-21 | 1964-06-04 | Karl Adams | Flap valve with differential piston |
| CN2051319U (en) * | 1989-03-27 | 1990-01-17 | 浙江省瑞安市仪表三厂 | Rapid cut-off regulating butterfly valve |
| CN2457407Y (en) * | 2000-12-21 | 2001-10-31 | 启东阀门厂 | Intelligent emergency fast cut-off valve |
| KR20020074380A (en) * | 2001-03-19 | 2002-09-30 | 케이.비.(주) | Butterfly valve |
| CN1611823A (en) * | 2003-10-30 | 2005-05-04 | 上海海星阀门总厂 | Pneumatic and manual high corrosion resistance two-way sealed butterfly valve |
| CN200940722Y (en) * | 2006-01-09 | 2007-08-29 | 洛阳维信特种设备有限公司 | Quick reset device for pneumatic butterfly valve under accidenty state |
| CN201212560Y (en) * | 2008-05-05 | 2009-03-25 | 江苏神通阀门股份有限公司 | Safety casing isolation butterfly valve |
| CN201306453Y (en) * | 2008-12-03 | 2009-09-09 | 黄剑峰 | Three-dimensional eccentric butterfly valve |
| CN202768889U (en) * | 2012-06-20 | 2013-03-06 | 朱崇新 | Pneumatic self-controlled fast safety shut-off valve for coal gas |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333162A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Automatic regulating valve disc |
| CN106755679A (en) * | 2017-01-17 | 2017-05-31 | 山东钢铁集团日照有限公司 | A kind of top gas stop valve |
| WO2022105488A1 (en) * | 2020-11-17 | 2022-05-27 | 宁夏佰斯特医药化工有限公司 | Intelligent fireproof pneumatic actuating mechanism for valve |
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Application publication date: 20121107 |