CN214022421U - Undisturbed reverse purging device for wind speed sampling pipeline - Google Patents
Undisturbed reverse purging device for wind speed sampling pipeline Download PDFInfo
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- CN214022421U CN214022421U CN202022426157.4U CN202022426157U CN214022421U CN 214022421 U CN214022421 U CN 214022421U CN 202022426157 U CN202022426157 U CN 202022426157U CN 214022421 U CN214022421 U CN 214022421U
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Abstract
The utility model discloses a device is swept to no disturbance blowback of wind speed sampling pipeline, including tuber pipe (1), lean against pipe (2), dynamic pressure that has dynamic pressure pipe servo two-way ball valve (6) draws pressure pipeline (4), static pressure that has static pressure pipe servo two-way ball valve (12) draws pressure pipeline (3) and pressure transmitter (8), dynamic pressure draws pressure pipeline (4) and sweeps pressure pipe (37) through the blowback that has dynamic pressure air supply pulse generator (35) and dynamic pressure one-level isolation solenoid valve (31), static pressure draws pressure pipeline (3) and sweeps quiet pipe (38) through the blowback that has static pressure air supply pulse generator (34) and static pressure one-level isolation solenoid valve (32) and is connected with sweep air supply distributor (22) respectively, above-mentioned valve and air supply pulse generator all are connected and accept the control of PLC the control unit (25) through circuit and PLC the control unit (25). The utility model discloses can close and sealed sampling pipeline, avoid the blowback air current to disturb wind speed measuring device.
Description
Technical Field
The utility model belongs to the technical field of thermal power factory, rubbish power factory and other technical field that need measure gas-solid two-phase flow and specifically relates to stifled blowback device is prevented to gas-solid double-phase wind speed sampling pipeline, and specifically speaking is a wind speed sampling pipeline undisturbed anti-blowing device.
Background
In practical application, the primary wind speed of the coal grinding pulverizer is measured inaccurately, and the sampling pipe is blocked frequently, which brings great trouble to operators for analyzing the combustion state of the boiler. After the sampling device which generates faults is carefully analyzed, the following results are found: when the wind speed measuring device works, as the conveying pipeline contains a large amount of coal particles and various impurities, after a period of measurement, the coal particles and the various impurities can be attached to the sampling pipeline and the sensor, and the sampling pipeline can be blocked shortly after the coal particles and the various impurities are accumulated to a certain thickness, so that the measurement result is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that prior art exists, a wind speed sampling pipeline undisturbed anti-purging device is provided to thoroughly solve because the sampling pipeline blocks up the problem that leads to wind speed measuring device trouble.
The utility model aims at solving through the following technical scheme:
the utility model provides a device is swept to no disturbance blowback of wind speed sampling pipeline, is used for the sampling including installing on the tuber pipe to lean against the pipe, leans against the pipe and draws the pressure pipeline and the static pressure that has the servo two-way ball valve of static pressure pipe to draw the pressure pipeline and pressure transmitter's dynamic pressure input side and static pressure input side to correspond through the dynamic pressure that has the servo two-way ball valve of dynamic pressure pipe respectively and is connected its characterized in that: the dynamic pressure leading pipeline positioned on the front side of the dynamic pressure tube servo two-way ball valve is connected with the purging gas source distributor through a reverse purging tube, the static pressure leading pipeline positioned on the front side of the static pressure tube servo two-way ball valve is connected with the purging gas source distributor through a reverse purging static tube, the reverse purging tube is provided with a dynamic pressure gas source pulse generator and a dynamic pressure one-stage isolation electromagnetic valve, the reverse purging tube is provided with a static pressure gas source pulse generator and a static pressure one-stage isolation electromagnetic valve, and the dynamic pressure tube servo two-way ball valve, the static pressure tube servo two-way ball valve, the dynamic pressure one-stage isolation electromagnetic valve, the static pressure gas source pulse generator and the dynamic pressure gas source pulse generator are connected with the PLC control unit through circuits and are controlled by the PLC control unit.
The PLC control unit is connected with the touch screen and the switch power supply through a circuit, the switch power supply is connected with the touch screen through a circuit, and the switch power supply can supply power to the PLC control unit and the touch screen.
And the PLC control unit is connected with a standby battery pack power supply through a circuit.
The PLC control unit is connected with the power-off detection unit through a circuit, the power-off detection unit is connected with the V circuit, and the power-off detection unit is respectively connected with the switch power supply and the standby battery pack power supply through circuits.
The back flushing scavenging pipe is sequentially provided with a dynamic pressure manual scavenging valve, a dynamic pressure pipe flowmeter, a dynamic pressure secondary isolation electromagnetic valve, a dynamic pressure primary isolation electromagnetic valve and a dynamic pressure gas source pulse generator, the dynamic pressure manual scavenging valve is arranged close to the scavenging gas source distributor, the dynamic pressure gas source pulse generator is arranged close to the dynamic pressure leading pipeline, and the dynamic pressure pipe flowmeter, the dynamic pressure secondary isolation electromagnetic valve, the dynamic pressure primary isolation electromagnetic valve and the dynamic pressure gas source pulse generator are all connected with the PLC control unit through lines.
The back-flushing static pipe is sequentially provided with a static pressure manual purging valve, a static pressure pipe flowmeter, a static pressure secondary isolation electromagnetic valve, a static pressure primary isolation electromagnetic valve and a static pressure air source pulse generator, the static pressure manual purging valve is arranged close to the purging air source distributor, the static pressure air source pulse generator is arranged close to the static pressure leading pipeline, and the static pressure pipe flowmeter, the static pressure secondary isolation electromagnetic valve, the static pressure primary isolation electromagnetic valve and the static pressure air source pulse generator are all connected with the PLC control unit through lines.
And the air source pressure regulating valve, the air source impurity filter and the air inlet main valve are sequentially arranged on the air inlet main pipeline at the air inlet side of the purging air source distributor, and the air source pressure regulating valve is arranged adjacent to the purging air source distributor.
And the output end of the pressure transmitter is connected with the signal acquisition isolator.
And a dynamic pressure sensor is arranged on a dynamic pressure leading pipeline between the dynamic pressure tube servo two-way ball valve and the pressure transmitter, a static pressure sensor is arranged on a static pressure leading pipeline between the static pressure tube servo two-way ball valve and the pressure transmitter, and the static pressure sensor and the dynamic pressure sensor are connected with the PLC control unit through lines to transmit pressure data.
A first dynamic pressure manual three-way valve and a second dynamic pressure manual three-way valve are respectively arranged on dynamic pressure leading pipelines on two sides of the dynamic pressure pipe servo two-way ball valve, and a third interface of the first dynamic pressure manual three-way valve is connected with a third interface of the second dynamic pressure manual three-way valve through a dynamic pressure branch pipeline with a dynamic pressure manual two-way valve; and a third interface of the first static pressure manual three-way valve and a third interface of the second static pressure manual three-way valve are connected through a static pressure branch pipeline with a static pressure manual two-way valve.
Compared with the prior art, the utility model has the following advantages:
the utility model discloses a no disturbance is anti-sweeps device has thoroughly solved because sampling pipeline blocks up the problem that leads to wind speed measuring device trouble, and during sweeping, this no disturbance is anti-sweeps device can be closed the sampling pipeline completely and sealed, keeps the pressure state before the sampling for wind speed measuring device avoids the interference of blowback air current disturbing signal, and the signal will remain stable unchangeable, does not influence the unit operation.
Drawings
Fig. 1 is a schematic control principle diagram of the undisturbed reverse purging device for the wind speed sampling pipeline of the utility model;
FIG. 2 is a schematic diagram of the single-duct back blowing of the undisturbed back blowing device for the wind speed sampling pipeline of the utility model;
figure 3 is the utility model discloses a wind speed sampling pipeline does not have anti-schematic diagram of sweeping of many tuber pipes of disturbing anti-device of sweeping.
Wherein: 1-air pipe; 2-a backrest tube; 3, a static pressure leading pipeline; 4-dynamic pressure leading pipeline; 5, a first dynamic pressure manual three-way valve; 6-a dynamic pressure tube servo two-way ball valve; 7-a second dynamic pressure manual three-way valve; 8, a pressure transmitter; 9-signal acquisition isolator; 10-dynamic pressure manual two-way valve; 11-a first static pressure manual three-way valve; 12-a two-way ball valve with a static pressure pipe servo; 13-a second static pressure manual three-way valve; 14-a static pressure sensor; 15-dynamic pressure sensor; 16-dynamic pressure two-stage isolation electromagnetic valve; 17-static pressure two-stage isolation electromagnetic valve; 18-dynamic tube flow meter; 19-a static tube flow meter; 20-static pressure manual purge valve; 21-dynamic pressure manual purge valve; 22-purge gas source distributor; 23-a touch screen; 24-a switching power supply; 25-a PLC control unit; 26-backup battery power supply; 27-air source pressure regulating valve; 28-gas source impurity filter; 29-main intake air line; 30-a main intake valve; 31-dynamic pressure primary isolation electromagnetic valve; 32-static pressure primary isolation electromagnetic valve; 33-a power-off detection unit; 34-a static pressure air source pulse generator; 35-a dynamic pressure air source pulse generator; 36-static pressure manual two-way valve; 37-blowback sweep tube; 38-blowback to sweep the static pipe.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1-2: a wind speed sampling pipeline undisturbed back-flushing device comprises a back-to-back pipe 2 which is arranged on an air pipe 1 and used for sampling, wherein the back-to-back pipe 2 is correspondingly connected with a dynamic pressure input side and a static pressure input side of a pressure transmitter 8 through a dynamic pressure pipeline 4 with a dynamic pressure pipe servo two-way ball valve 6 and a static pressure pipeline 3 with a static pressure pipe servo two-way ball valve 12 respectively, and the output end of the pressure transmitter 8 is connected with a signal acquisition isolator 9; the dynamic pressure guiding pipeline 4 between the dynamic pressure tube servo two-way ball valve 6 and the pressure transmitter 8 is provided with a dynamic pressure sensor 15, the static pressure guiding pipeline 3 between the static pressure tube servo two-way ball valve 12 and the pressure transmitter 8 is provided with a static pressure sensor 14, and the static pressure sensor 14 and the dynamic pressure sensor 15 are connected with the PLC control unit 25 through lines to transmit pressure data. In order to prevent the dynamic pressure tube servo two-way ball valve 6 and/or the static pressure tube servo two-way ball valve 12 from failing to work, a first dynamic pressure manual three-way valve 5 and a second dynamic pressure manual three-way valve 7 are respectively arranged on the dynamic pressure leading pipeline 4 on two sides of the dynamic pressure tube servo two-way ball valve 6, and a third interface of the first dynamic pressure manual three-way valve 5 is connected with a third interface of the second dynamic pressure manual three-way valve 7 through a dynamic pressure branch pipeline with a dynamic pressure manual two-way valve 10; a first static pressure manual three-way valve 11 and a second static pressure manual three-way valve 13 are respectively arranged on the static pressure leading pipeline 3 on two sides of the static pressure pipe servo two-way ball valve 12, and a third interface of the first static pressure manual three-way valve 11 is connected with a third interface of the second static pressure manual three-way valve 13 through a static pressure branch pipeline with a static pressure manual two-way valve 36.
In order to perform disturbance-free back-flushing operation, in the wind speed sampling pipeline disturbance-free back-flushing device, a dynamic pressure leading pipeline 4 positioned on the front side of a dynamic pressure pipe servo two-way ball valve 6 is connected with a purging gas source distributor 22 through a back-purging pipe 37, and a static pressure leading pipeline 3 positioned on the front side of a static pressure pipe servo two-way ball valve 12 is connected with the purging gas source distributor 22 through a back-purging static pipe 38; a dynamic pressure manual purge valve 21, a dynamic pressure tube flowmeter 18, a dynamic pressure secondary isolation electromagnetic valve 16, a dynamic pressure primary isolation electromagnetic valve 31 and a dynamic pressure air source pulse generator 35 are sequentially arranged on a reverse purge tube 37, the dynamic pressure manual purge valve 21 is arranged adjacent to a purge air source distributor 22, the dynamic pressure air source pulse generator 35 is arranged adjacent to a dynamic pressure pilot pressure pipeline 4, a static pressure manual purge valve 20, a static pressure tube flowmeter 19, a static pressure secondary isolation electromagnetic valve 17, a static pressure primary isolation electromagnetic valve 32 and a static pressure air source pulse generator 34 are sequentially arranged on a reverse purge static tube 38, the static pressure manual purge valve 20 is arranged adjacent to the purge air source distributor 22, the static pressure air source pulse generator 34 is arranged adjacent to a static pressure pilot pressure pipeline 3, the dynamic pressure tube servo two-way ball valve 6, the static pressure tube servo two-way ball valve 12, the dynamic pressure tube flowmeter 18, the dynamic pressure secondary isolation electromagnetic valve 16, the dynamic pressure primary isolation electromagnetic valve 31, the dynamic pressure air source pulse generator 34 are sequentially arranged adjacent to the static pressure pilot pressure pipeline 3, The dynamic pressure air source pulse generator 35, the static pressure tube flowmeter 19, the static pressure secondary isolation electromagnetic valve 17, the static pressure primary isolation electromagnetic valve 32 and the static pressure air source pulse generator 34 are all connected with the PLC control unit 25 through lines, wherein the dynamic pressure tube flowmeter 18 and the static pressure tube flowmeter 19 transmit reverse purging gas flow signals to the PLC control unit 25, and the dynamic pressure tube servo two-way ball valve 6, the static pressure tube servo two-way ball valve 12, the dynamic pressure secondary isolation electromagnetic valve 16, the dynamic pressure primary isolation electromagnetic valve 31, the dynamic pressure air source pulse generator 35, the static pressure secondary isolation electromagnetic valve 17, the static pressure primary isolation electromagnetic valve 32 and the static pressure air source pulse generator 34 are controlled by the PLC control unit 25. In addition, in order to provide clean gas, a gas source pressure regulating valve 27, a gas source impurity filter 28 and a gas inlet main valve 30 are sequentially arranged on a gas inlet main pipeline 29 on the gas inlet side of the purging gas source distributor 22, the gas source pressure regulating valve 27 is arranged adjacent to the purging gas source distributor 22, and in addition, the gas source pressure regulating valve 27 and the gas inlet main valve 30 are selectively controlled by a manual control unit or a PLC control unit 25 according to requirements.
On the basis of the technical scheme, the PLC control unit 25 is connected with the touch screen 23 and the switching power supply 24 through a circuit, the switching power supply 24 is connected with the touch screen 23 through a circuit, the switching power supply 24 can supply power to the PLC control unit 25 and the touch screen 23, and the touch screen 23 is used for setting parameters such as back flushing frequency and checking signals transmitted to the PLC control unit 25 by a flowmeter, a pressure sensor and the like. In order to prevent the back flushing operation when the power is off, the PLC control unit 25 is connected with a standby battery pack power supply 26 through a circuit; in order to know the power-off information in time, the PLC control unit 25 is connected to the power-off detection unit 33 through a line, the power-off detection unit 33 is connected to the 220V circuit, and the power-off detection unit 33 is connected to the switching power supply 24 and the standby battery pack power supply 26 through lines, respectively.
The undisturbed reverse purging device for the wind speed sampling pipeline has multiple functions of automatic reverse purging, manual reverse purging, automatic reverse purging in power failure, manual reverse purging in power failure and the like.
The utility model discloses a wind speed sampling pipeline undisturbed anti-blow back of sweeping device sweeps the function through the automatic back blowing below through the concrete example.
The utility model discloses a wind speed sampling pipeline undisturbed anti-workflow that sweeps of automation of sweeping device as follows.
Firstly, a power supply is connected, all electric control valves are in a closed state, an air inlet main valve 30, a dynamic pressure manual purge valve 20 and a static pressure manual purge valve 21 are opened, a service air source flows into an air source impurity filter 28 through an air inlet main pipeline 29, and enters an air source pressure regulating valve 27 through a filtered air source, and compressed air of 0.1-0.8Mpa can be output to be supplied to a purge air source distributor 22 after being regulated.
Secondly, the purge gas source distributor 22 distributes the purge gas source to the back-flushing static pipe 38 and the back-flushing static pipe 37, and the purge gas source enters the static pressure pipe flowmeter 19 and the dynamic pressure pipe flowmeter 18 through the static pressure manual purge valve 20 and the dynamic pressure manual purge valve 21 respectively.
Thirdly, when the back purging is not performed, the back tube 2 measures a differential pressure signal in the air tube 1: the dynamic pressure reaches the dynamic pressure input side of the pressure transmitter 8 through a first dynamic pressure manual three-way valve 5, a dynamic pressure tube servo two-way ball valve 6, a second dynamic pressure manual three-way valve 7 and a dynamic pressure sensor 15 in the dynamic pressure leading pipeline 4, and the static pressure reaches the static pressure input side of the pressure transmitter 8 through a first static pressure manual three-way valve 11, a static pressure tube servo two-way ball valve 12, a second static pressure manual three-way valve 13 and a static pressure sensor 14 in the static pressure leading pipeline 3; the pressure transmitter 8 converts the differential pressure signals of the two into 4-20MA signals and sends the signals to the signal acquisition isolator 9, and the signal acquisition isolator 9 analyzes and stores the signals and sends the signals to a DCS (distributed control system) of a factory.
And fourthly, during reverse purging, starting reverse purging after the set purging time in the touch screen 23 is up: firstly, the PLC control unit 25 closes the dynamic pressure tube servo two-way ball valve 6 and the static pressure tube servo two-way ball valve 12, opens the dynamic pressure primary isolation electromagnetic valve 31 and opens the static pressure primary isolation electromagnetic valve 32, and simultaneously feeds back a signal capable of entering a working state to the PLC control unit 25, and after receiving the signal, the PLC control unit 25 opens the dynamic pressure secondary isolation electromagnetic valve 16 and the static pressure secondary isolation electromagnetic valve 17, so that a purging gas source enters the dynamic pressure gas source pulse generator 35 and the static pressure gas source pulse generator 34 to perform back purging on a sampling pipeline, and the purging time is adjustable.
Fifthly, after purging is finished, the PLC control unit 25 firstly closes the dynamic pressure secondary isolation electromagnetic valve 16 and the static pressure secondary isolation electromagnetic valve 17 to prevent the gas source from being connected into the sampling pipeline in series; and secondly, closing the dynamic pressure primary isolation electromagnetic valve 31 and the static pressure primary isolation electromagnetic valve 32, and finally opening the dynamic pressure tube servo two-way ball valve 6 and the static pressure tube servo two-way ball valve 12 to complete purging.
When the dynamic pressure tube servo two-way ball valve 6 and/or the static pressure tube servo two-way ball valve 12 fails to work, the valves of the first dynamic pressure manual three-way valve 5, the second dynamic pressure manual three-way valve 7, the first static pressure manual three-way valve 11 and the second static pressure manual three-way valve 13 are switched, and the dynamic pressure manual two-way valve 10 and the static pressure manual two-way valve 36 are opened, so that dynamic pressure enters the dynamic pressure manual two-way valve 10 on the dynamic pressure branch pipeline through the first dynamic pressure manual three-way valve 5 on the dynamic pressure leading pipeline 4, returns to the second dynamic pressure manual three-way valve 7 on the dynamic pressure leading pipeline 4, and reaches the dynamic pressure input side of the pressure transmitter 8 through the dynamic pressure sensor 15 on the dynamic pressure leading pipeline 4; static pressure enters a static pressure manual two-way valve 36 on the static pressure branch pipeline through a first static pressure manual three-way valve 11 on the static pressure leading pipeline 3, then returns to a second static pressure manual three-way valve 13 on the static pressure leading pipeline 3, and reaches a static pressure input side of the pressure transmitter 8 through a static pressure sensor 14 on the static pressure leading pipeline 3; the pressure transmitter 8 converts the differential pressure signals of the two into 4-20MA signals and sends the signals to the signal acquisition isolator 9, and the signal acquisition isolator 9 analyzes and stores the signals and sends the signals to a DCS (distributed control system) of a factory. The above-mentioned process is promptly the utility model discloses a wind speed sampling pipeline undisturbed anti-difference part that sweeps workflow and automatic blowback of sweeping workflow of the artifical anti-work flow that sweeps device that sweeps. In the process, the dynamic pressure tube servo two-way ball valve 6 and/or the static pressure tube servo two-way ball valve 12 can be replaced according to the requirement.
The utility model discloses a wind speed sampling pipeline undisturbed anti-purging device not only can carry out the blowback and sweep the operation, can also carry out failure diagnosis:
in the operation process of the disturbance-free inverse blowing device for the wind speed sampling pipeline of the utility model, when the PLC control unit 25 detects that the pressure value of the static pressure sensor 14 and/or the dynamic pressure sensor 15 is lower than a set value, the PLC control unit 25 automatically starts inverse blowing; after the back flushing is finished, if the pressure value of the static pressure sensor 14 and/or the dynamic pressure sensor 15 is still lower than the set value, the PLC control unit 25 intelligently sends an alarm signal to the control room;
fault intelligent diagnosis II, the utility model discloses a wind speed sampling pipeline undisturbed anti-purging device operation in-process, when PLC the control unit 25 detects that 8 signal data of pressure transmitter are unusual, PLC the control unit 25 will open anti-purging; after the back flushing is finished, if the signal data of the pressure transmitter 8 are still abnormal, the PLC control unit 25 intelligently sends an alarm signal to a control room;
thirdly, intelligently diagnosing faults, namely, when the power failure detection unit 33 detects the fault of the external power supply of the device, the external power supply is actively disconnected immediately, and the standby battery pack power supply 26 is started; the utility model discloses a wind speed sampling pipeline undisturbed anti-purging device enters into stand-by power supply operating condition, and the system sends alarm signal to control room with intelligence.
The utility model discloses a wind speed sampling pipeline undisturbed anti-purging device not only is limited to carry out the blowback to a tuber pipe and sweeps the operation, still can carry out anti-purging simultaneously to many tuber pipes (the drawing is as shown in fig. 3).
The utility model discloses a no disturbance is anti-sweeps device has thoroughly solved because sampling pipeline blocks up the problem that leads to wind speed measuring device trouble, and during sweeping, this no disturbance is anti-sweeps device can be closed the sampling pipeline completely and sealed, keeps the pressure state before the sampling for wind speed measuring device avoids the interference of blowback air current disturbing signal, and the signal will remain stable unchangeable, does not influence the unit operation.
The above embodiments are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea provided by the present invention all fall within the protection scope of the present invention; the technology not related to the utility model can be realized by the prior art.
Claims (10)
1. The utility model provides a wind speed sampling pipeline undisturbed blowback sweeps device, including installing pipe (2) of leaning against that is used for the sampling on tuber pipe (1), lean against pipe (2) and draw pressure pipeline (4) and the static pressure that has the servo two-way ball valve of static pressure pipe (12) and draw pressure pipeline (3) and pressure transmitter (8) dynamic pressure input side and static pressure input side to correspond through the dynamic pressure that has the servo two-way ball valve of dynamic pressure pipe (6) respectively and be connected, its characterized in that: the dynamic pressure leading pipeline (4) positioned on the front side of the dynamic pressure tube servo two-way ball valve (6) is connected with the purging gas source distributor (22) through a back-blowing sweeping tube (37), the static pressure leading pipeline (3) positioned on the front side of the static pressure tube servo two-way ball valve (12) is connected with the purging gas source distributor (22) through a back-blowing sweeping tube (38), the back-blowing sweeping tube (37) is provided with a dynamic pressure gas source pulse generator (35) and a dynamic pressure one-stage isolation electromagnetic valve (31), the back-blowing sweeping tube (38) is provided with a static pressure gas source pulse generator (34) and a static pressure one-stage isolation electromagnetic valve (32), the dynamic pressure tube servo two-way ball valve (6), the static pressure tube servo two-way ball valve (12), the dynamic pressure one-stage isolation electromagnetic valve (31), the static pressure one-stage isolation electromagnetic valve (32), the static pressure gas source pulse generator (34) and the dynamic pressure gas source pulse generator (35) are connected with the PLC control unit (25) through circuits and receive the PLC control unit (25) ) And (4) controlling.
2. The wind speed sampling pipeline undisturbed back-flushing device of claim 1, wherein: the PLC control unit (25) is connected with the touch screen (23) and the switch power supply (24) through a circuit, the switch power supply (24) is connected with the touch screen (23) through a circuit, and the switch power supply (24) can supply power to the PLC control unit (25) and the touch screen (23).
3. The wind speed sampling pipeline undisturbed back-flushing device of claim 2, wherein: the PLC control unit (25) is connected with a standby battery pack power supply (26) through a line.
4. The wind speed sampling pipeline undisturbed back-flushing device of claim 3, wherein: the PLC control unit (25) is connected with the power-off detection unit (33) through a circuit, the power-off detection unit (33) is connected with the 220V circuit, and the power-off detection unit (33) is respectively connected with the switch power supply (24) and the standby battery pack power supply (26) through circuits.
5. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: the back flushing scavenging pipe (37) is sequentially provided with a dynamic pressure manual scavenging valve (21), a dynamic pressure pipe flowmeter (18), a dynamic pressure secondary isolation electromagnetic valve (16), a dynamic pressure primary isolation electromagnetic valve (31) and a dynamic pressure air source pulse generator (35), the dynamic pressure manual scavenging valve (21) is arranged close to a scavenging air source distributor (22), the dynamic pressure air source pulse generator (35) is arranged close to a dynamic pressure pilot pressure pipeline (4), and the dynamic pressure pipe flowmeter (18), the dynamic pressure secondary isolation electromagnetic valve (16), the dynamic pressure primary isolation electromagnetic valve (31) and the dynamic pressure air source pulse generator (35) are all connected with a PLC control unit (25) through lines.
6. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: the static pressure pipe (38) is sequentially provided with a static pressure manual purge valve (20), a static pressure pipe flowmeter (19), a static pressure secondary isolation electromagnetic valve (17), a static pressure primary isolation electromagnetic valve (32) and a static pressure air source pulse generator (34), the static pressure manual purge valve (20) is arranged close to a purge air source distributor (22), the static pressure air source pulse generator (34) is arranged close to a static pressure leading pipeline (3), and the static pressure pipe flowmeter (19), the static pressure secondary isolation electromagnetic valve (17), the static pressure primary isolation electromagnetic valve (32) and the static pressure air source pulse generator (34) are connected with a PLC control unit (25) through lines.
7. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: and an air source pressure regulating valve (27), an air source impurity filter (28) and an air inlet main valve (30) are sequentially arranged on an air inlet main pipeline (29) at the air inlet side of the purging air source distributor (22), and the air source pressure regulating valve (27) is arranged adjacent to the purging air source distributor (22).
8. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: the output end of the pressure transmitter (8) is connected with a signal acquisition isolator (9).
9. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: the dynamic pressure guiding pipeline (4) located between the dynamic pressure tube servo two-way ball valve (6) and the pressure transmitter (8) is provided with a dynamic pressure sensor (15), the static pressure guiding pipeline (3) located between the static pressure tube servo two-way ball valve (12) and the pressure transmitter (8) is provided with a static pressure sensor (14), and the static pressure sensor (14) and the dynamic pressure sensor (15) are connected with the PLC control unit (25) through lines to transmit pressure data.
10. The wind speed sampling pipeline undisturbed back-flushing device of any one of claims 1-4, wherein: a first dynamic pressure manual three-way valve (5) and a second dynamic pressure manual three-way valve (7) are respectively arranged on dynamic pressure inducing pipelines (4) on two sides of the dynamic pressure tube servo two-way ball valve (6), and a third interface of the first dynamic pressure manual three-way valve (5) is connected with a third interface of the second dynamic pressure manual three-way valve (7) through a dynamic pressure branch pipeline with a dynamic pressure manual two-way valve (10); and a first static pressure manual three-way valve (11) and a second static pressure manual three-way valve (13) are respectively arranged on the static pressure guiding pipeline (3) at two sides of the static pressure pipe servo two-way ball valve (12), and a third interface of the first static pressure manual three-way valve (11) is connected with a third interface of the second static pressure manual three-way valve (13) through a static pressure branch pipeline with a static pressure manual two-way valve (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022426157.4U CN214022421U (en) | 2020-10-28 | 2020-10-28 | Undisturbed reverse purging device for wind speed sampling pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022426157.4U CN214022421U (en) | 2020-10-28 | 2020-10-28 | Undisturbed reverse purging device for wind speed sampling pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN214022421U true CN214022421U (en) | 2021-08-24 |
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| CN202022426157.4U Active CN214022421U (en) | 2020-10-28 | 2020-10-28 | Undisturbed reverse purging device for wind speed sampling pipeline |
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| CN (1) | CN214022421U (en) |
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