CN204028100U - A kind of Two-stage control Pitotmeter purges case - Google Patents
A kind of Two-stage control Pitotmeter purges case Download PDFInfo
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- CN204028100U CN204028100U CN201420320335.7U CN201420320335U CN204028100U CN 204028100 U CN204028100 U CN 204028100U CN 201420320335 U CN201420320335 U CN 201420320335U CN 204028100 U CN204028100 U CN 204028100U
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- solenoid valve
- stage control
- control solenoid
- pitotmeter
- valve
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Abstract
The utility model relates to a kind of Two-stage control Pitotmeter and purges case.Its objective is that a kind of structure is simple, cost is low in order to provide, data velocimeter purging case is accurately provided.Enclosure interior of the present utility model comprises one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21, the second Two-stage control solenoid valve FC22 and PLC control system.One end of one-level Controlling solenoid valve FC1 is connected with compressed air inlet pipe road and the anti-scavenging pipeline of dust respectively, the other end of one-level Controlling solenoid valve FC1 is connected with the purging end of two Two-stage control solenoid valves respectively, the impulse end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is connected with the negative pressure hole of pitot tube and malleation hole respectively, the transmitter end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 respectively with negative pressure end and the positive press bond of differential pressure transmitter.PLC control system is all accessed in the contact of each solenoid valve, and PLC control system is connected with computing machine, and each solenoid valve is all connected with power supply.
Description
Technical field
The utility model relates to douching technique field, particularly relates to a kind of Two-stage control Pitotmeter and purges case.
Background technology
When present stage carries out environment monitoring, not only to carry out the measurement of composition and concentration to flue gas and Dust, also will add up enterprise pollution thing discharge capacity simultaneously, also will carry out the measurement of flue gas auxiliary parameter.These parameters mainly comprise: flue-gas temperature, pressure, flow velocity and humidity.The measurement of flue gas flow rate at present more adopts S type Pitotmeter, but there is high dirt or more big dust particle in industry spot flue gas, add that smoke moisture is bigger than normal, and the internal diameter size of S type pitot tube is substantially between 8mm to 10mm, after have passed through a period of time, S type pitot tube just there will be the situation of blocking like this, not only increase the maintenance work of staff to equipment, and too increase material resources cost.Although some pitot tube sensors are provided with velocimeter and purge case, still there are some problems:
1, flow velocity purges case is outdoor mounted, and do not have good rainproof measure, electric fault rate increases greatly;
2, flowmeter purges case owing to controlling for one-level, and when velocimeter purges, special saltus step on a large scale easily appears in flow speed data, brings difficulty to enterprise's discharge quantitative statistics;
3, directly contact with pressurized air because one-level coutroi velocity meter purges case, add pressure membrane boxlike differential pressure transmitter and blown bad probability, maintenance cost is increased.
Utility model content
The technical problems to be solved in the utility model is to provide that a kind of structure is simple, maintenance cost is low, provide data accurately Two-stage control Pitotmeter purge case.
A kind of Two-stage control Pitotmeter of the utility model purges case, comprise housing, wherein: enclosure interior comprises one-level Controlling solenoid valve FC1, first Two-stage control solenoid valve FC21, second Two-stage control solenoid valve FC22 and PLC control system, one end of one-level Controlling solenoid valve FC1 is connected with compressed air inlet pipe road and the anti-scavenging pipeline of dust respectively, the other end of one-level Controlling solenoid valve FC1 is connected with the purging end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 respectively, the impulse end of the first Two-stage control solenoid valve FC21 is connected with the negative pressure hole of S type pitot tube, the impulse end of the second Two-stage control solenoid valve FC22 is connected with the malleation hole of S type pitot tube, the transmitter end of the first Two-stage control solenoid valve FC21 and the negative press bond of differential pressure transmitter, the transmitter end of the second Two-stage control solenoid valve FC22 and the positive press bond of differential pressure transmitter, one-level Controlling solenoid valve FC1, the control port of PLC control system is all accessed in the contact of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22, the signal receiving end of PLC control system is connected with computing machine by control cables, one-level Controlling solenoid valve FC1, first Two-stage control solenoid valve FC21 is connected with power supply with the second Two-stage control solenoid valve FC22.
A kind of Two-stage control Pitotmeter of the utility model purges case, wherein said housing is cuboid structure, housing forward end is provided with chamber door, chamber door side and shell one end sidewall edge hinged, the opposite side of chamber door is provided with theftproof lock, and housing tip is provided with rain cover, the sidewall of housing offers four through holes, offer four through holes in housing bottom, the back side of housing is provided with fixed mount.
A kind of Two-stage control Pitotmeter of the utility model purges case, and four through holes in wherein said housing sidewall are followed successively by pitot tube malleation through hole, transmitter malleation through hole, transmitter negative pressure through-hole and pitot tube negative pressure through-hole from top to bottom.
A kind of Two-stage control Pitotmeter of the utility model purges case, and four through holes that wherein said housing bottom is offered are compressed air inlet port, dust instrument blow valve port and two long cable section of ingoing line mouths.
A kind of Two-stage control Pitotmeter of the utility model purges case, and wherein said compressed air inlet pipe road and the anti-scavenging pipeline of dust are separately installed with purging case main valve and dust blow down valve, and purging case main valve and dust blow down valve are all manual ball valve.
A kind of Two-stage control Pitotmeter of the utility model purges case, and the valve body of wherein said one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 all adopts teflon (PTFE) material.
A kind of Two-stage control Pitotmeter of the utility model purges case, and the voltage of wherein said power supply is 24V.
A kind of Two-stage control Pitotmeter of the utility model purges case difference from prior art and is: the utility model structure is simple, maintenance cost is low, provide data accurate.Adopt two-stage electromagnetic valve to control, when velocimeter purges, flow speed data there will not be large-scale saltus step, provides effective data for verifying pollution reduction amount.The deferred action that each solenoid valve is all necessary in the process purged, makes purging case directly contact with pressurized air the very first time, greatly reduces differential pressure transmitter pressure diaphragm capsule and blown bad probability, reduce maintenance cost.Be provided with rain cover on purging case top, the equipment that rainwater is not easy purging case inside damages, and decreases the appearance of electric fault, extends the serviceable life that can purge case internal unit.
Purge case below in conjunction with accompanying drawing to a kind of Two-stage control Pitotmeter of the utility model to be described further.
Accompanying drawing explanation
Fig. 1 is the inner connecting structure schematic diagram that a kind of Two-stage control Pitotmeter of the utility model purges case;
Fig. 2 is the front elevation that a kind of Two-stage control Pitotmeter of the utility model purges case external shell.
Embodiment
As shown in Figure 2, for a kind of Two-stage control Pitotmeter of the utility model purges the front elevation of case external shell, purging case external shell 1 is cuboid structure, housing 1 front end is provided with chamber door 6, chamber door 6 side and housing 1 end side mural margin hinged, the opposite side of chamber door 6 is provided with theftproof lock 8.On housing 1 top, rain cover 7 is installed, the sidewall of housing 1 offers from top to bottom successively pitot tube malleation through hole 9, transmitter malleation through hole 10, transmitter negative pressure through-hole 10 ' and pitot tube negative pressure through-hole 9 '.Compressed air inlet port 11, dust instrument blow valve port 12 and two long cable section of ingoing line mouths 13 are offered in housing 1 bottom.The back side of housing 1 is provided with fixed mount, purging case can be suspended on wall.
As shown in Figure 1, for a kind of Two-stage control Pitotmeter of the utility model purges the inner connecting structure schematic diagram of case, the inside purging tank shell 1 comprises one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21, the second Two-stage control solenoid valve FC22 and PLC control system.One end of one-level Controlling solenoid valve FC1 is connected with two pipelines respectively, article two, pipeline is each passed through compressed air inlet port 11 and dust instrument blow valve port 12 and is connected with the compressed air inlet pipe road 14 and the anti-scavenging pipeline 15 of dust purging case outside, compressed air inlet pipe road 14 and the anti-scavenging pipeline 15 of dust are separately installed with and purge case main valve 4 and dust blow down valve 5, purging case main valve 4 and dust blow down valve 5 are all manual ball valve.The other end of one-level Controlling solenoid valve FC1 is connected with the purging end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 respectively, the impulse end of the first Two-stage control solenoid valve FC21 is connected with the negative pressure hole of S type pitot tube 3 through pitot tube negative pressure through-hole 9 ', the impulse end of the second Two-stage control solenoid valve FC22 is connected with the malleation hole of S type pitot tube 3 through pitot tube malleation through hole 9, the transmitter end of the first Two-stage control solenoid valve FC21 is through the negative press bond of transmitter negative pressure through-hole 10 ' with differential pressure transmitter 2, the transmitter end of the second Two-stage control solenoid valve FC22 is through the positive press bond of transmitter malleation through hole 10 with differential pressure transmitter 2.The impulse end of the first Two-stage control solenoid valve FC21 and the impulse end of the second Two-stage control solenoid valve FC22 are all long logical state.The control port of PLC control system is all accessed in the contact of one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22, and the signal receiving end of PLC control system is connected with computing machine by control cables.One-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21 are also connected with power supply with the second Two-stage control solenoid valve FC22, and the voltage of power supply is 24V.The valve body of one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 all adopts teflon (PTFE) material, has fabulous antiseptic effect.
When S type pitot tube 3 is normally measured, purge case main valve 4 and be in closed condition, one-level Controlling solenoid valve FC1 is not charged is also in closed condition, the purging end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is in closed condition, impulse end and the transmitter end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 are all in open mode, now the negative pressure hole of S type pitot tube 3 passes through the negative press bond of the first Two-stage control solenoid valve FC21 and differential pressure transmitter 2, the positive press bond of the second Two-stage control solenoid valve FC22 and differential pressure transmitter 2 is passed through in the malleation hole of S type pitot tube 3, S type pitot tube 3 can measure the flow of medium.When needs purge S type pitot tube 3, manual unlocking purges case main valve 4, the control port of PLC control system sends signal simultaneously, the transmitter end controlling the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is closed, the purging end controlling the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is opened, now the first Two-stage control solenoid valve FC21 is communicated with malleation hole with the negative pressure hole of S type pitot tube 3 respectively with the purging end of the second Two-stage control solenoid valve FC22, after time delay 5s, PLC control system controls one-level Controlling solenoid valve FC1 and obtains electric opening, pressurized air enters into purging case by compressed air inlet pipe road 14 and purges S type pitot tube 3.When reaching the purge time of setting, PLC control system controls one-level Controlling solenoid valve FC1 dead electricity and closes, after time delay 2s, the purging end that PLC control system controls the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is closed, the transmitter end controlling the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 is opened, proceed normal measurement, last manual-lock purges case main valve 4.Can manual unlocking dust instrument back-flushing valve 5 in the process purged, purging purging the dust instrument that case outside connects, purging and terminating rear manual-lock dust instrument back-flushing valve 5.Because the first Two-stage control solenoid valve FC21 is connected in parallel with the second Two-stage control solenoid valve FC22, therefore in whole course of action, the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 remains action simultaneously.
A kind of Two-stage control Pitotmeter of the utility model purges case, and adopt two-stage electromagnetic valve to control, when velocimeter purges, flow speed data there will not be large-scale saltus step, provides effective data for verifying pollution reduction amount.The deferred action that each solenoid valve is all necessary in the process purged, makes purging case directly contact with pressurized air the very first time, greatly reduces differential pressure transmitter 2 pressure diaphragm capsule and blown bad probability, reduce maintenance cost.Be provided with rain cover 7 on purging case top, the equipment that rainwater is not easy purging case inside damages, and decreases the appearance of electric fault, extends the serviceable life that can purge case internal unit.The utility model structure is simple, maintenance cost is low, provide data accurate, compared with prior art has obvious advantage.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (7)
1. a Two-stage control Pitotmeter purges case, comprise housing (1), it is characterized in that: housing (1) inside comprises one-level Controlling solenoid valve FC1, first Two-stage control solenoid valve FC21, second Two-stage control solenoid valve FC22 and PLC control system, one end of one-level Controlling solenoid valve FC1 is connected with compressed air inlet pipe road (14) and the anti-scavenging pipeline of dust (15) respectively, the other end of one-level Controlling solenoid valve FC1 is connected with the purging end of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 respectively, the impulse end of the first Two-stage control solenoid valve FC21 is connected with the negative pressure hole of S type pitot tube (3), the impulse end of the second Two-stage control solenoid valve FC22 is connected with the malleation hole of S type pitot tube (3), the transmitter end of the first Two-stage control solenoid valve FC21 and the negative press bond of differential pressure transmitter (2), the transmitter end of the second Two-stage control solenoid valve FC22 and the positive press bond of differential pressure transmitter (2), one-level Controlling solenoid valve FC1, the control port of PLC control system is all accessed in the contact of the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22, the signal receiving end of PLC control system is connected with computing machine by control cables, one-level Controlling solenoid valve FC1, first Two-stage control solenoid valve FC21 is connected with power supply with the second Two-stage control solenoid valve FC22.
2. a kind of Two-stage control Pitotmeter according to claim 1 purges case, it is characterized in that: described housing (1) is cuboid structure, housing (1) front end is provided with chamber door (6), chamber door (6) side and housing (1) end side mural margin hinged, the opposite side of chamber door (6) is provided with theftproof lock (8), housing (1) top is provided with rain cover (7), the sidewall of housing (1) offers four through holes, four through holes are offered in housing (1) bottom, the back side of housing (1) is provided with fixed mount.
3. a kind of Two-stage control Pitotmeter according to claim 2 purges case, it is characterized in that: four through holes on described housing (1) sidewall are followed successively by pitot tube malleation through hole (9), transmitter malleation through hole (10), transmitter negative pressure through-hole (10 ') and pitot tube negative pressure through-hole (9 ') from top to bottom.
4. a kind of Two-stage control Pitotmeter according to claim 2 purges case, it is characterized in that: four through holes that described housing (1) bottom is offered are compressed air inlet port (11), dust instrument blow valve port (12) and two long cable section of ingoing line mouths (13).
5. a kind of Two-stage control Pitotmeter according to claim 1 purges case, it is characterized in that: described compressed air inlet pipe road (14) and the anti-scavenging pipeline of dust (15) are separately installed with purging case main valve (4) and dust blow down valve (5), and purging case main valve (4) and dust blow down valve (5) are all manual ball valve.
6. a kind of Two-stage control Pitotmeter according to claim 1 purges case, it is characterized in that: the valve body of described one-level Controlling solenoid valve FC1, the first Two-stage control solenoid valve FC21 and the second Two-stage control solenoid valve FC22 all adopts teflon (PTFE) material.
7. a kind of Two-stage control Pitotmeter according to claim 1 purges case, it is characterized in that: the voltage of described power supply is 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420320335.7U CN204028100U (en) | 2014-06-16 | 2014-06-16 | A kind of Two-stage control Pitotmeter purges case |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420320335.7U CN204028100U (en) | 2014-06-16 | 2014-06-16 | A kind of Two-stage control Pitotmeter purges case |
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| CN204028100U true CN204028100U (en) | 2014-12-17 |
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| CN201420320335.7U Active CN204028100U (en) | 2014-06-16 | 2014-06-16 | A kind of Two-stage control Pitotmeter purges case |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018876A (en) * | 2016-07-31 | 2016-10-12 | 江阴市嘉臣光电科技有限公司 | Intelligent flowing speed meter |
| CN106840284A (en) * | 2016-12-22 | 2017-06-13 | 汇众翔环保科技河北有限公司 | Based on multitube Pitot tube matrix form flow system and measuring method |
| CN114688317A (en) * | 2020-12-26 | 2022-07-01 | 安徽皖仪科技股份有限公司 | Valve seat structure based on pitot tube flow velocity measurement |
-
2014
- 2014-06-16 CN CN201420320335.7U patent/CN204028100U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018876A (en) * | 2016-07-31 | 2016-10-12 | 江阴市嘉臣光电科技有限公司 | Intelligent flowing speed meter |
| CN106018876B (en) * | 2016-07-31 | 2019-12-10 | 江苏嘉臣环境科技有限公司 | Intelligent current meter |
| CN106840284A (en) * | 2016-12-22 | 2017-06-13 | 汇众翔环保科技河北有限公司 | Based on multitube Pitot tube matrix form flow system and measuring method |
| CN114688317A (en) * | 2020-12-26 | 2022-07-01 | 安徽皖仪科技股份有限公司 | Valve seat structure based on pitot tube flow velocity measurement |
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