CN203551180U - Converter opening micro-differential pressure measuring pressure tapping device - Google Patents
Converter opening micro-differential pressure measuring pressure tapping device Download PDFInfo
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- CN203551180U CN203551180U CN201320644902.XU CN201320644902U CN203551180U CN 203551180 U CN203551180 U CN 203551180U CN 201320644902 U CN201320644902 U CN 201320644902U CN 203551180 U CN203551180 U CN 203551180U
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- pressure
- differential pressure
- short tube
- controller
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Abstract
The utility model discloses a converter opening micro-differential pressure measuring pressure tapping device comprising a sealing housing having side walls provided with an A air inlet opening and a B air inlet opening. One end of the inner side of the housing is provided with a cylinder communicated with the A air inlet opening and the B air inlet opening, and the other end of the housing is sealedly connected with a short tube, one end of which is inserted in the housing. The side wall of the short tube extended out of the housing is provided with a pressure tapping opening. One end of a poking needle, which is capable of carrying out the reciprocating motion along the own axis direction, is connected with a cylinder piston rod, and the other end of the poking needle is inserted in the short tube. The device also comprises a differential pressure transmitter, which is connected with the pressure tapping opening by a reverse-blowing protection valve; a controller, which is respectively connected with the reverse-blowing protection valve, a reverse-blowing control valve, and a pneumoelectric controller; and a gas distribution device. The gas distribution device, the reverse-blowing control valve, and the pressure tapping opening are sequentially connected together. The gas distribution device, a gas source cutting valve, and the pneumoelectric controller are sequentially connected together. The A air inlet opening and the B air inlet opening are connected with the pneumoelectric controller. The device is provided with the pressure-tapping slag-blowing function, and can satisfy the requirement on the accuracy of the continuous measurement of the micro-differential pressure signals of the converter opening.
Description
Technical field
The utility model belongs to instrument and meter for automation field of measuring technique, relates to differential pressure and measures pressure obtaning device, is specifically related to a kind of converter mouth differential pressure and measures pressure obtaning device.
Background technology
When not combustion method of coverter pig is carried out coal-gas recovering, in order to improve gas quality and the recovery and to reduce the pollution that converter gas leaks to environment, be provided with fire door differential pressure regulating system.It controls the aperture of the second Venturi tube aditus laryngis R-D valve according to the size of flue gas pressures in fire door petticoat pipe by controller, fire door pressure is kept within the specific limits, and general control is in ± 20Pa left and right.
Can fire door differential pressure regulation and control system be realized, the crucial measurement at converter mouth differential pressure.When converter mouth differential pressure signal measurement misalignment maybe can not detect, fire door differential pressure controlled system with self-regulation will out of handly act on, and affects RECOVERY OF CONVERTER GAS or smelts environment because of the excessive pollution of flue gas.
The pressure point of fire door differential pressure is generally located on underflue, with 4 pressures, the caliber of four pressure pipes is φ 40mm, pressure pipe after drawing again by a φ 50mm ring pipe by four pressure pipe UNICOMs, get its mean pressure to differential pressure transmitter, to carry out blowback during at converter blow off, sweep measuring that pipeline installs nitrogen blowing facility additional simultaneously.
All there is following problem in above ways of measure pressure: the one, and pressure pipe caliber is larger, and has four pressure tappings, purges nitrogen pressure deficiency, can not concentrate and purge the pressure tappings stopping up, and purges poor effect.The 2nd, in converter steelmaking process, there will be molten steel splash, the molten steel of splash sticks in the obstruction causing on pressure tappings, and anti-source purge gas cannot blow the slag that causes pressure tappings to stop up open.The 3rd, pressure tappings is once after stopping up, only, after converter stops production, when pressure tappings ambient temperature drops to ambient temperature, adopt the mode of artificial dredging to open pressure tappings.
Utility model content
In order to overcome above-mentioned problems of the prior art, the purpose of this utility model is to provide a kind of converter mouth differential pressure and measures pressure obtaning device, be suitable for continuous pressure, possess pressure obtaning device and technology that the automatic break of pressure tappings and pressure pipe automatic back blow are swept, can effectively solve the above-mentioned problem of mentioning, and meet the requirement that reaches converter mouth differential pressure signal continuous coverage accuracy.
For achieving the above object, the technical scheme that the utility model adopts is, comprises the housing of sealing, is respectively equipped with A air intake opening and B air intake opening on the sidewall of housing, an end face in housing is provided with cylinder, and two gas ports of cylinder are communicated with A air intake opening and B air intake opening respectively; The other end of housing is sealedly connected with short tube, and one end of this short tube is stretched in housing, and the other end of this short tube stretches out outside housing, and the sidewall that short tube is positioned at outside housing is provided with pressure tappings; The piston rod of cylinder is connected with the one end of disclosing pin, and the other end of disclosing pin stretches in short tube, and disclosing pin can move back and forth along self axis direction; This converter mouth differential pressure is measured pressure obtaning device and is also comprised differential pressure transmitter, gas distributor and controller, and differential pressure transmitter is swept protective valve by blowback and is connected with pressure tappings; Gas distributor is swept operation valve by blowback and is connected with pressure tappings, and gas distributor is connected with pneumoelectric controller by source of the gas stop valve, and pneumoelectric controller is connected with B air intake opening with A air intake opening respectively; Controller sweeps with blowback respectively that protective valve, blowback are swept operation valve, pneumoelectric controller is connected.
The end face that housing stretches into short tube is provided with framework, and framework is provided with catch bar, and catch bar one side is connected with cylinder piston rod, catch bar opposite side with disclose pin and be connected.
In housing sidewall, be respectively equipped with cool nitrogen entrance and cold gas vent port, cool nitrogen entrance is connected with gas distributor by cold gas operation valve.
The utility model converter mouth differential pressure is measured pressure obtaning device compared with prior art, has the following advantages:
1, by director demon, control pneumoelectric controller, by the air inlet of B air intake opening, the venting of A air intake opening, piston rod is released, and controls and discloses pin, and pressure tappings is carried out to break processing; After release finishes, by director demon, control pneumoelectric controller, by the air inlet of A air intake opening, the venting of B air intake opening, piston rod is return, disclose pin return to pressure tappings after.When the splash of converter smelting generation molten steel, stop up during pressure tappings, can control fast and disclose pin pressure tappings is dredged, meanwhile, operating personnel need not enter the operation of converter hazardous location, have also avoided because of dredging pressure tappings, and converter smelting is produced the problem that must interrupt.
2, on the sidewall outside short tube is positioned at housing, be provided with pressure tappings, pressure tappings is swept operation valve by blowback and is connected with gas distributor, realize converter mouth differential pressure pressure pipe automatic back blow and sweep function, guarantee that after every stove has been smelted, all carrying out nitrogen blowback sweeps, avoid manually controlling blowback and sweep because maintainer lacks a sense of responsibility and cause the problem of pressure tappings and line clogging.
Accompanying drawing explanation
Fig. 1 is that converter mouth differential pressure is measured pressure obtaning device schematic diagram.
In figure: 1, flange join type pressure tappings, 2, controller, 3, pressure tappings, 4, housing, 5, A air intake opening, 6, cylinder, 7, B air intake opening, 8, cool nitrogen entrance, 9, disclose pin, 10, protective valve is swept in blowback, 11, operation valve is swept in blowback, 12, pneumoelectric controller, 13, source of the gas stop valve, 14, cold gas operation valve, 15, gas distributor, 16, differential pressure transmitter, 17, pressure purges break controller, 18, differential pressure signal, 19, medium pressure nitrogen gas, 20, converter smelting signal, 21, cold gas vent port, V-A, V-A1, V-B, V-B1, V-C, V-C1, V-D, V-D1 is pipeline switching valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of converter mouth differential pressure is measured pressure obtaning device, comprises the housing 4 of sealing, is respectively equipped with A air intake opening 5 and B air intake opening 7 on the sidewall of housing 4, an end face in housing 4 is provided with cylinder 6, and two gas ports of cylinder 6 are communicated with A air intake opening 5 and B air intake opening 7 respectively; The other end of housing 4 is sealedly connected with short tube, and one end of this short tube is stretched in housing 4, and the other end of this short tube stretches out outside housing 4, and the sidewall that short tube is positioned at outside housing 4 is provided with pressure tappings 3; The piston rod of cylinder 6 is connected with the one end of disclosing pin 9, and the other end of disclosing pin 9 stretches in short tube, and disclosing pin 9 can move back and forth along self axis direction; This converter mouth differential pressure is measured pressure obtaning device and is also comprised differential pressure transmitter 16, gas distributor 15 and controller 2, and differential pressure transmitter 16 is swept protective valve 10 by blowback and is connected with pressure tappings 3; Gas distributor 15 is swept operation valve 11 by blowback and is connected with pressure tappings 3, and gas distributor 15 is connected with pneumoelectric controller 12 by source of the gas stop valve 13, and pneumoelectric controller 12 is connected with B air intake opening 7 with A air intake opening 5 respectively; Controller 2 sweeps with blowback respectively that protective valve 10, blowback are swept operation valve 11, pneumoelectric controller 12 is connected.During use, on converter flue wall, establish a pressure port, short tube is welded on pressure port, flange is set on short tube and forms flange form connection pressure tappings 1, by affixed to short tube one end and the flange of housing 4.
Two housings 4 with short tube also can be set, during use, on converter flue wall, establish two pressure ports, two short tubes are welded on respectively on two pressure ports, flange is set respectively on two short tubes and forms two flange forms and connect pressure tappings 1, by two, stretch out short tube one end outside housing 4 affixed with flange respectively.Pipeline switching valve V-A, V-A1, V-B, V-B1, V-C, V-C1, V-D, V-D1, while being two housing the using and the reserved maintenance, switching connecting line uses, V-A, V-B, V-C, V-D are online housing pipeline switching valve, and V-A1, V-B1, V-C1, V-D1 are standby housing pipeline switching valve.When a housing breaks down, can be switched to fast another housing and carry out work.
After converter smelting finishes, converter smelting signal 20, by controller 2 programs, is controlled pneumoelectric controller 12, and by 7 air inlets of B air intake opening, A air intake opening 5 is exitted, and piston rod is released, and controls and discloses pin 9, and pressure tappings 3 is carried out to break processing; After release finishes, by controller 2 programs, control pneumoelectric controller 12, by 5 air inlets of A air intake opening, B air intake opening 7 is exitted, and piston rod is return, disclose pin 9 return to pressure tappings 3 after.Release and return the total travel time and determine by field adjustable, round trip is a break process, carries out continuously break more than three times, and break finishes, and guarantees that pressure tappings break is thorough.
After break finishes, by controller 2 programs, blowback is swept operation valve 11 and is opened; blowback is swept protective valve 10 and is turn-offed; the pressure pipe of pressure tappings 3 carries out nitrogen blowback and sweeps dredging pressure pipe and pressure tappings 3, and blowback is swept after 3 minutes and finished, and guarantees that pressure pipe and pressure tappings 3 purge clean.
After end is swept in blowback, blowback is swept operation valve 11 and is turn-offed, and blowback is swept protective valve 10 and opened, and differential pressure transmitter 16 proceeds to differential pressure signal 18 and measures.
For guaranteeing that housing semi-finals freezes but, on broken slag device housing 4 sidewalls, be also provided with cool nitrogen entrance 8 and cold gas vent port 21, cool nitrogen entrance 8 is connected with gas distributor 15 by cold gas operation valve 14.Cold gas operation valve 14 is opened, and medium pressure nitrogen gas 19 passes in housing 4, through coolant exhaust hole 21, discharges.
Blowback is swept protective valve 10, blowback and is swept operation valve 11 for cutting type solenoid valve, and when blowback is swept protective valve 10 and opened, blowback is swept operation valve 11 and closed simultaneously, and differential pressure signal 18 is measured; When blowback is swept operation valve 11 and opened, blowback is swept protective valve 10 and is closed simultaneously, and while guaranteeing that pressure pipe and pressure tappings 3 purge, differential pressure transmitter 16 is unlikely to static pressure overload to be damaged.
Source of the gas stop valve 13, when overhauling, turn-offs the manually operated control valve of nitrogen, when housing 4 is worked, opens, and during maintenance, closes.
Cold gas operation valve 14, the nitrogen operation valve of the cooling and dedusting while working for housing 4, opens during work, during maintenance, closes.
The effect of gas distributor 15 is to guarantee that enough nitrogen pressures and flow are for housing 4 when each while all connecting with gas point.
Pressure purges break switch board 17, and for scene being installed by cabinet on the spot, it is comprised of 10,11,12,13,14,15,16 parts and controller 2 and V-A, V-A1, V-B, V-B1, V-C, V-C1, V-D, V-D1 pipeline switching valve.
Claims (3)
1. a converter mouth differential pressure is measured pressure obtaning device, it is characterized in that: the housing (4) that comprises sealing, on the sidewall of housing (4), be respectively equipped with A air intake opening (5) and B air intake opening (7), an end face in housing (4) is provided with cylinder (6), and two gas ports of cylinder (6) are communicated with A air intake opening (5) and B air intake opening (7) respectively; The other end of housing (4) is sealedly connected with short tube, and one end of this short tube is stretched in housing (4), and the other end of this short tube stretches out outside housing (4), and short tube is positioned at the outer sidewall of housing (4) and is provided with pressure tappings (3); The piston rod of cylinder (6) is connected with the one end of disclosing pin (9), and the other end of disclosing pin (9) stretches in short tube, and disclosing pin (9) can move back and forth along self axis direction;
This converter mouth differential pressure is measured pressure obtaning device and is also comprised differential pressure transmitter (16), gas distributor (15) and controller (2), and differential pressure transmitter (16) is swept protective valve (10) by blowback and is connected with pressure tappings (3); Gas distributor (15) is swept operation valve (11) by blowback and is connected with pressure tappings (3), gas distributor (15) is connected with pneumoelectric controller (12) by source of the gas stop valve (13), and pneumoelectric controller (12) is connected with B air intake opening (7) with A air intake opening (5) respectively; Controller (2) sweeps with blowback respectively that protective valve (10), blowback are swept operation valve (11), pneumoelectric controller (12) is connected.
2. converter mouth differential pressure as claimed in claim 1 is measured pressure obtaning device, it is characterized in that: the end face that described housing (4) stretches into short tube is provided with framework, framework is provided with catch bar, and catch bar one side is connected with the piston rod of cylinder (6), catch bar opposite side with disclose pin (9) and be connected.
3. converter mouth differential pressure as claimed in claim 1 is measured pressure obtaning device, it is characterized in that: on described housing (4) sidewall, be respectively equipped with cool nitrogen entrance (8) and cold gas vent port (21), cool nitrogen entrance (8) is connected with gas distributor (15) by cold gas operation valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644902.XU CN203551180U (en) | 2013-10-19 | 2013-10-19 | Converter opening micro-differential pressure measuring pressure tapping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320644902.XU CN203551180U (en) | 2013-10-19 | 2013-10-19 | Converter opening micro-differential pressure measuring pressure tapping device |
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| Publication Number | Publication Date |
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| CN203551180U true CN203551180U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320644902.XU Expired - Fee Related CN203551180U (en) | 2013-10-19 | 2013-10-19 | Converter opening micro-differential pressure measuring pressure tapping device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333989A (en) * | 2014-06-12 | 2016-02-17 | 国家核电技术有限公司 | Pressure guiding device for measuring micro differential pressure of liquid medium in pipeline |
| CN106011364A (en) * | 2016-08-01 | 2016-10-12 | 南京金瀚环保科技有限公司 | Wet-method primary dust-proof micro pressure difference anti-blocking method of steel-making converter |
| CN110863082A (en) * | 2019-12-12 | 2020-03-06 | 北京京诚科林环保科技有限公司 | Flue pressure tapping self-cleaning device with back-blowing function and vaporization cooling flue |
-
2013
- 2013-10-19 CN CN201320644902.XU patent/CN203551180U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333989A (en) * | 2014-06-12 | 2016-02-17 | 国家核电技术有限公司 | Pressure guiding device for measuring micro differential pressure of liquid medium in pipeline |
| CN105333989B (en) * | 2014-06-12 | 2018-05-25 | 国家核电技术有限公司 | For measuring the pressure-inducting device of the differential pressure of liquid medium in pipeline |
| CN106011364A (en) * | 2016-08-01 | 2016-10-12 | 南京金瀚环保科技有限公司 | Wet-method primary dust-proof micro pressure difference anti-blocking method of steel-making converter |
| CN110863082A (en) * | 2019-12-12 | 2020-03-06 | 北京京诚科林环保科技有限公司 | Flue pressure tapping self-cleaning device with back-blowing function and vaporization cooling flue |
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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: 20140416 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |