CN202472298U - Pneumatic control device of flue gas desulfurization bypass baffle plate - Google Patents
Pneumatic control device of flue gas desulfurization bypass baffle plate Download PDFInfo
- Publication number
- CN202472298U CN202472298U CN2012200760769U CN201220076076U CN202472298U CN 202472298 U CN202472298 U CN 202472298U CN 2012200760769 U CN2012200760769 U CN 2012200760769U CN 201220076076 U CN201220076076 U CN 201220076076U CN 202472298 U CN202472298 U CN 202472298U
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- switch
- air
- flue gas
- gas desulfurization
- control unit
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Abstract
The utility model discloses a pneumatic control device of a flue gas desulfurization bypass baffle plate, which comprises an air cylinder, an airlock valve, a positioner, a position transmitter, a travel switch, a gas tank and a control cabinet, wherein the control cabinet is connected with the airlock valve and the positioner via pipelines, the airlock valve and the positioner are connected to the air cylinder, the gas tank is connected with the airlock valve and the control cabinet respectively, the travel switch is arranged on the air cylinder, and the position transmitter is connected with the positioner. The pneumatic control device of the flue gas desulfurization bypass baffle plate has function of fault protection under the conditions of air failure, power off and signal off and has functions of manual button and forced quick open of a remote control console or local control cabinet, starting protection pressure can be arbitrarily designed within a range of 1 to 4 bar according to requirement during air failure, the pneumatic control device is safer and more reliable; the control cabinet has a stainless steel dual-door structure and can be applied to various severe environments; a solenoid valve can work in a charged way for a long time, the pneumatic control device is low in fault rate; and a reset button on the control cabinet is a type of key switch, so that misoperation is avoided, and the pneumatic control device is safer.
Description
Technical field
The utility model relates to a kind of flue gas desulfurization by-pass damper air control unit.
Background technology
In the prior art, it is 10000-20000 ox rice even bigger that the flue gas desulfurization by-pass damper requires moment usually, when three break fault (source of dying, outage source, break signal); Flue gas desulfurization by-pass damper door requires to open fast; Fast ETAD expected time of arrival and departure was compared with air control unit less than 8 seconds, and the electric operator output torque is little; Responsiveness is slow, has problems such as force moment protection simultaneously; Common air control unit has following problem: adopt the pore T-valve to realize losing gas and open function soon, when the bleed pressure complete obiteration could start protection, the starting pressure of emergency protection can not be set; On-site control is generally the carbon steel plastic-blasting, perishable getting rusty; Switch board does not force to open soon hand push button; Problems such as solenoid valve failure rate height.
The utility model content
The purpose of the utility model provides the flue gas desulfurization by-pass damper air control unit of failure protection function under a kind of realize dying source, outage source and three kinds of situation of end signal.
The utility model for realizing the technical scheme that above-mentioned purpose adopted is: a kind of flue gas desulfurization by-pass damper air control unit; Comprise cylinder, air lock, steady arm, position transmitter, travel switch, gas tank and switch board; Switch board is connected with steady arm with air lock through pipeline; Air lock and steady arm are connected on the cylinder; Gas tank is connected with switch board with air lock respectively; Travel switch is arranged on the cylinder, and position transmitter is connected with steady arm, and switch board comprises air switch, electronic switch, filtering pressure reducing valve, hand valve, auxiliary reclay, terminal row, pressure switch, solenoid valve, pilot lamp, rotary switch, pushbutton switch and reset switch; Air switch, electronic switch, filtering pressure reducing valve, hand valve, auxiliary reclay, terminal row, reset switch and solenoid valve are arranged in the switch board cabinet; Air switch, electronic switch, auxiliary reclay and terminal row are connected successively, and filtering pressure reducing valve, hand valve, pressure switch and solenoid valve are arranged on the connecting line of switch board, and pilot lamp, rotary switch, pushbutton switch, reset switch are arranged on the switch board panel.
Said rotary switch is divided into Long-distance Control rotary switch and control handle switch on the spot.
Said pilot lamp comprises power light, reach a pilot lamp and the pass pilot lamp that puts in place.
Said reset switch is the key-type switch.
The pilot pressure of said air lock is 1-4bar.
Said cylinder, air lock, steady arm, position transmitter, gas tank, solenoid valve, pressure switch, filtering pressure reducing valve, travel switch constitute the Pneumatic control circuit of air control unit.
A kind of flue gas desulfurization by-pass damper of the utility model air control unit has the failure protection function under the source of dying, outage source, the break signal situation, has distant place control desk or on-site control hand push button and forces to open soon function; The source emergency protection starting pressure of dying can be set arbitrarily in the 1-4bar scope as required, and more safe and reliable, switch board is a stainless steel two storied gate structure; Can be suitable for various rugged surroundings; Solenoid valve is can long-term charged work type, and failure rate is low, and the SR on the switch board is the key switch type; Avoid maloperation, safer.
Description of drawings
Fig. 1 is the structural representation of a kind of flue gas desulfurization by-pass damper of the utility model air control unit.
Fig. 2 is the Pneumatic control circuit figure of a kind of flue gas desulfurization by-pass damper of the utility model air control unit.
Fig. 3 is the electrical control figure of a kind of flue gas desulfurization by-pass damper of the utility model air control unit.
Fig. 4 is the switch board arrangenent diagram of a kind of flue gas desulfurization by-pass damper of the utility model air control unit.
Fig. 5 is the switch board control panel arrangenent diagram of a kind of flue gas desulfurization by-pass damper of the utility model air control unit.
Among the figure: 1, cylinder; 2, air lock; 3, steady arm; 4, position transmitter; 5, travel switch; 6, gas tank; 7, switch board; 8, air switch; 9, electronic switch; 10, filtering pressure reducing valve; 11, hand valve; 12, auxiliary reclay; 13, terminal row; 14, pressure switch; 15, solenoid valve; 16, pilot lamp; 17, rotary switch; 18, pushbutton switch; 19, reset switch.
Embodiment
As depicted in figs. 1 and 2; Flue gas desulfurization by-pass damper air control unit; Comprise cylinder 1, air lock 2, steady arm 3, position transmitter 4, travel switch 5, gas tank 6 and switch board 7; Switch board 7 is connected with steady arm 3 with air lock 2 through pipeline, and air lock 2 is connected on the cylinder 1 with steady arm 3, and gas tank 6 is connected with switch board 7 with air lock 2 respectively; Travel switch 5 is arranged on the cylinder 1; Position transmitter 4 is connected with steady arm 3, and switch board 7 comprises air switch 8, electronic switch 9, filtering pressure reducing valve 10, hand valve 11, auxiliary reclay 12, terminal row 13, pressure switch 14, solenoid valve 15, pilot lamp 16, rotary switch 17, pushbutton switch 18 and reset switch 19, and air switch 8, electronic switch 9, filtering pressure reducing valve 10, hand valve 11, auxiliary reclay 12, terminal row 13, reset switch 19 and solenoid valve 15 are arranged in the switch board cabinet; Air switch 8, electronic switch 9, auxiliary reclay 12 and terminal row 13 are connected successively; Filtering pressure reducing valve 10, hand valve 11, pressure switch 14 and solenoid valve 15 are arranged on the connecting line of switch board, and pilot lamp 16, rotary switch 17, pushbutton switch 18, reset switch 19 are arranged on the switch board panel, and rotary switch 17 is divided into Long-distance Control rotary switch and control handle switch on the spot; Pilot lamp comprises power light, reach a pilot lamp and the pass pilot lamp that puts in place; Wherein, cylinder 1, air lock 2, steady arm 3, position transmitter 4, gas tank 6, solenoid valve 15, pressure switch 14, filtering pressure reducing valve 10, travel switch 5 constitute the Pneumatic control circuit of air control unit, during normal regulating control; One road source of the gas is after filtering reduction valve 10 filtration decompressions; Through solenoid valve, pressure switch, arrive air lock pilot 3-port transfer D, this moment, air lock U mouth and S mouth communicated; After other one road source of the gas filtered decompression through filtering pressure reducing valve 10, it was subsequent use to flow into gas tank, gets into steady arm simultaneously; Get into the cylinder acting through air lock again, 4～20 mA control signals of input get into steady arm through electronic switch; Steady arm is regulated control continuously to cylinder; Position transmitter and the travel switch in the topworks simultaneously converts the mechanical shift of topworks continuous position signal and the switching value model of 4-20mA to, feeds back to the DCS control system; When dying the source fault, bleed pressure is lower than the air lock pilot pressure, and the air lock switching-over uses the compressed air-driven cylinder operation baffle plate of laying in the gas tank to open fast; During outage source fault, solenoid valve switching-over emptying air lock guide source of the gas, the air lock switching-over uses the compressed air-driven cylinder operation baffle plate of laying in the gas tank to open fast; During the break signal fault, electrical switch contacts is broken off, the solenoid valve outage, and solenoid valve switching-over emptying air lock guide source of the gas, the air lock switching-over uses the compressed air-driven baffle plate of laying in the gas tank to open fast.
Like Fig. 3, Fig. 4 and shown in Figure 5; Switch board and electric control loop comprise air switch 8, electronic switch 9, filtering pressure reducing valve 10, hand valve 11, auxiliary reclay 12-1K, 12-2K, 12-3K, terminal row 13, pressure switch 14, solenoid valve 15, pilot lamp 16-1HL, 16-2HL, rotary switch 17, pushbutton switch 18, reset switch 19; Rotary switch long-range and that control is on the spot arranged on the switch board panel; When manually controlling on the spot: rotary switch 17 places with regard to destination location; Auxiliary reclay 12-1K gets electric, and auxiliary contact 1K-1 is closed, and auxiliary contact 1K-4 breaks off; Send state of a control feedback signal on the spot simultaneously, operate SR 19-1SB closure on the spot, electronic switch 9 signals are normal; Normal opened contact ES-1 is closed, and SR 19-2SB and SR 19-3SB are normally closed, and this moment, auxiliary reclay 12-2K got; Contact 2K-5 is closed, and solenoid valve 15 gets electric, can be through the action of steady arm control cylinder; Operation is opened push-button reset button 19-2SB on the spot soon and is broken off, and makes auxiliary reclay 12-2K outage, and electric shock 2K-5 breaks off; Solenoid valve 15 outages, air lock switching-over U mouth and E mouth communicate, and use the compressed air-driven cylinder operation baffle plate of laying in the gas tank to open fast; During remote auto control: rotary switch places remote location, auxiliary reclay 12-1K dead electricity, and auxiliary contact 1K-1 breaks off, and auxiliary contact 1K-4 is closed; Can be through remote console button and the control executing mechanism action respectively of DCS signal, principle is identical with local operation, and when electronic switch outage or break signal, electronic switch normal opened contact ES-1 breaks off; Also can make auxiliary reclay 12-2K outage, contact 2K-5 breaks off, the solenoid valve outage, and air lock switching-over U mouth and E mouth communicate; Use the compressed air-driven cylinder operation baffle plate of deposit in the gas tank 6 to open fast, when cylinder arrived the end of travel of standard-sized sheet and complete shut-down, travel switch was closed, on the switch board panel pilot lamp 16-1HL or 16-2HL switch on bright; 3K is the power alarm relay, and during outage, normally closed contact 3K-2 is closed to report to the police; Pilot lamp 16-3HL is a power light, and during outage, the pilot lamp outage is extinguished; A kind of flue gas desulfurization by-pass damper of the utility model air control unit has the failure protection function under the source of dying, outage source, the break signal situation, has distant place control desk or on-site control hand push button and forces to open soon function; The source emergency protection starting pressure of dying can be set arbitrarily in the 1-4bar scope as required, and more safe and reliable, switch board is a stainless steel two storied gate structure; Can be suitable for various rugged surroundings, solenoid valve is can long-term charged work type, and failure rate is low; SR on the switch board is the key switch type, avoids maloperation, and is safer.
Claims (6)
1. flue gas desulfurization by-pass damper air control unit; It is characterized in that: comprise cylinder, air lock, steady arm, position transmitter, travel switch, gas tank and switch board; Switch board is connected with steady arm with air lock through pipeline; Air lock and steady arm are connected on the cylinder; Gas tank is connected with switch board with air lock respectively; Travel switch is arranged on the cylinder, and position transmitter is connected with steady arm, and switch board comprises air switch, electronic switch, filtering pressure reducing valve, hand valve, auxiliary reclay, terminal row, pressure switch, solenoid valve, pilot lamp, rotary switch, pushbutton switch and reset switch; Air switch, electronic switch, filtering pressure reducing valve, hand valve, auxiliary reclay, terminal row, reset switch and solenoid valve are arranged in the switch board cabinet; Air switch, electronic switch, auxiliary reclay and terminal row are connected successively, and filtering pressure reducing valve, hand valve, pressure switch and solenoid valve are arranged on the connecting line of switch board, and pilot lamp, rotary switch, pushbutton switch, reset switch are arranged on the switch board panel.
2. a kind of flue gas desulfurization by-pass damper air control unit according to claim 1 is characterized in that: said rotary switch is divided into Long-distance Control rotary switch and control handle switch on the spot.
3. a kind of flue gas desulfurization by-pass damper air control unit according to claim 1 is characterized in that: said pilot lamp comprises power light, reach a pilot lamp and the pass pilot lamp that puts in place.
4. a kind of flue gas desulfurization by-pass damper air control unit according to claim 1, it is characterized in that: said reset switch is the key-type switch.
5. a kind of flue gas desulfurization by-pass damper air control unit according to claim 1, it is characterized in that: the pilot pressure of said air lock is 1-4bar.
6. a kind of flue gas desulfurization by-pass damper air control unit according to claim 1 is characterized in that: said cylinder, air lock, steady arm, position transmitter, gas tank, solenoid valve, pressure switch, filtering pressure reducing valve, travel switch constitute the Pneumatic control circuit of air control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200760769U CN202472298U (en) | 2012-03-03 | 2012-03-03 | Pneumatic control device of flue gas desulfurization bypass baffle plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200760769U CN202472298U (en) | 2012-03-03 | 2012-03-03 | Pneumatic control device of flue gas desulfurization bypass baffle plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202472298U true CN202472298U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200760769U Expired - Fee Related CN202472298U (en) | 2012-03-03 | 2012-03-03 | Pneumatic control device of flue gas desulfurization bypass baffle plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202472298U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605289A (en) * | 2014-11-25 | 2016-05-25 | 国网河南省电力公司南阳供电公司 | Three-breaker protection circuit of industrial pneumatic control valve actuating mechanism |
| CN106090255A (en) * | 2016-06-23 | 2016-11-09 | 江苏汉唐环保科技有限公司 | A kind of board gate of flue gas desulfurization |
-
2012
- 2012-03-03 CN CN2012200760769U patent/CN202472298U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605289A (en) * | 2014-11-25 | 2016-05-25 | 国网河南省电力公司南阳供电公司 | Three-breaker protection circuit of industrial pneumatic control valve actuating mechanism |
| CN106090255A (en) * | 2016-06-23 | 2016-11-09 | 江苏汉唐环保科技有限公司 | A kind of board gate of flue gas desulfurization |
| CN106090255B (en) * | 2016-06-23 | 2019-08-23 | 江苏汉唐环保科技有限公司 | A kind of board gate of flue gas desulfurization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20200303 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |