CN212963526U - Anti-blocking cleaning device of flow meter - Google Patents
Anti-blocking cleaning device of flow meter Download PDFInfo
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- CN212963526U CN212963526U CN202022207497.8U CN202022207497U CN212963526U CN 212963526 U CN212963526 U CN 212963526U CN 202022207497 U CN202022207497 U CN 202022207497U CN 212963526 U CN212963526 U CN 212963526U
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Abstract
The utility model discloses an anti-blocking cleaning device of a flowmeter, which comprises a first control valve, a second control valve, a third control valve, a fourth control valve, a nitrogen gas branch pipeline, a nitrogen gas main pipeline and a nitrogen gas tank; the flowmeter comprises a differential pressure transmitter, a positive pressure measuring pipe, a negative pressure measuring pipe and a measuring pipe; the positive pressure measuring tube and the negative pressure measuring tube are respectively communicated with the measuring tube; the nitrogen tank is communicated with the nitrogen main pipeline; the number of the nitrogen branch pipelines is two, and the nitrogen main pipeline is respectively communicated with the positive pressure measuring pipe and the negative pressure measuring pipe through the two nitrogen branch pipelines; a nitrogen branch pipeline communicated with the positive pressure measuring pipe is provided with a third control valve, and a nitrogen branch pipeline communicated with the negative pressure measuring pipe is provided with a fourth control valve; the positive pressure measuring pipe between the communication position of the positive pressure measuring pipe and the nitrogen branch pipe and the differential pressure transmitter is provided with a first control valve, and the negative pressure measuring pipe between the communication position of the negative pressure measuring pipe and the nitrogen branch pipe and the differential pressure transmitter is provided with a second control valve. The utility model discloses clean efficient, simple structure.
Description
Technical Field
The utility model relates to a prevent stifled cleaning device, especially a flowmeter prevent stifled cleaning device.
Background
Because the bar-type flow meters (weidi bar, dielba, willaba, talaba, etc.) have the characteristics of simple structure and convenient assembly and disassembly, many steel mills can select the flow meters to measure when measuring the flow of blast furnace gas or converter gas in a pipeline. However, since the diameters of the measuring holes distributed on the measuring rod of the flow meter are small, the measuring holes of the flow meter are often blocked by dust and impurities in a measuring medium (blast furnace gas or converter gas) in the long-term use process, so that the measurement of the bar flow meter in use is inaccurate or fails, and various controls in the production process are influenced, such as reasonable adjustment of the gas usage of a gas boiler. Therefore, in case of malfunction or inaccuracy of the bar-type flow meter during use, the flow meter is disassembled and dredged by a maintainer immediately. However, the disassembly and the dredging can be long in use, so that the normal production process is influenced, and the hidden trouble of gas poisoning exists in the disassembly process of a maintainer; and some flow meters are installed on pipelines which are ten meters high away from the ground, and the danger of high-altitude operation exists for maintenance personnel.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a flowmeter's that can effectively dredge measuring aperture prevents stifled cleaning device.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: an anti-blocking cleaning device of a flowmeter comprises a first control valve, a second control valve, a third control valve, a fourth control valve, a nitrogen branch pipeline, a nitrogen main pipeline and a nitrogen tank; the flow meter comprises a differential pressure transmitter, a positive pressure measuring pipe, a negative pressure measuring pipe and a measuring pipe; the positive pressure measuring tube and the negative pressure measuring tube are respectively communicated with the measuring tube; the nitrogen tank is communicated with the nitrogen main pipeline; the number of the nitrogen branch pipelines is two, and the main nitrogen pipeline is respectively communicated with the positive pressure measuring pipe and the negative pressure measuring pipe through the two nitrogen branch pipelines; a third control valve is arranged on the nitrogen branch pipeline communicated with the positive pressure measuring pipe, and a fourth control valve is arranged on the nitrogen branch pipeline communicated with the negative pressure measuring pipe; the positive pressure measuring pipe between the positive pressure measuring pipe and the nitrogen branch pipe communicating part and the pressure difference transmitter is provided with a first control valve, and the negative pressure measuring pipe between the negative pressure measuring pipe and the nitrogen branch pipe communicating part and the pressure difference transmitter is provided with a second control valve.
Foretell flowmeter prevent stifled cleaning device, nitrogen gas branch pipeline is equipped with spiral shower nozzle respectively with the intercommunication end of malleation survey buret and negative pressure survey buret.
The anti-blocking cleaning device of the flowmeter is additionally provided with the CPU, the first triode, the first relay normally open control contact, the second triode, the second relay normally open control contact and the first relay normally closed control contact; the P2.0 interface of the CPU is connected with the base electrode of the first triode; the collector of the first triode is connected with a power supply through a first relay, and the emitter of the first triode is grounded; one end of a normally open control contact of the first relay is connected with a power supply, and the other end of the normally open control contact of the first relay is connected with the first control valve and the second control valve and then grounded; the P2.1 interface of the CPU is connected with the base electrode of the second triode; the collector of the second triode is connected with a power supply through a second relay, and the emitter of the second triode is grounded; and one end of the normally open control contact of the second relay is connected with the power supply, and the other end of the normally open control contact of the second relay is connected with the normally closed control contact of the first relay, the third control valve and the fourth control valve and then is grounded.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the nitrogen tank, the main nitrogen pipeline and the branch nitrogen pipeline are arranged to input nitrogen into the flowmeter, so that the flowmeter is dredged without being disassembled, and the cleaning efficiency is improved; the utility model arranges the third control valve and the fourth control valve on the nitrogen branch pipeline, when the flowmeter is in working state, the third control valve and the fourth control valve are closed, thereby preventing nitrogen from entering the flowmeter and ensuring the normal use of the flowmeter; the utility model discloses a set up first control valve on malleation survey buret, set up the second control valve on the malleation survey buret, dredge during operation first control valve and second control valve to the flowmeter and close, guarantee that the nitrogen gas of input only dredges survey buret downwards. The utility model has the characteristics of clean efficient, simple structure etc.
The utility model also arranges the spiral spray head at the air inlet end of the nitrogen branch pipeline, and the nitrogen at the air inlet end of the nitrogen branch pipeline is sprayed spirally, thereby improving the cleaning capability; the utility model discloses still through the automatic input that sets up CPU automatic control nitrogen gas, sweep clean survey buret, avoided worker's high altitude construction and well poison hidden danger, improved the security. The utility model has the characteristics of degree of automation is high, cleaning performance is high, the security is high etc.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a circuit control diagram of the present invention;
fig. 3 is a schematic structural view of the spiral spray head.
The reference numbers of the files in the figure are as follows: 1-differential pressure transmitter, 2-three groups of valves, 3-positive pressure measuring pipe, 4-negative pressure measuring pipe, 5-positive pressure pipe control valve, 6-negative pressure pipe control valve, 7-first control valve, 8-second control valve, 9-third control valve, 10-fourth control valve, 11-measuring pipe, 12-nitrogen branch pipe, 13-nitrogen main pipe, 14-nitrogen tank, 15-CPU, 16-spiral nozzle, VT 1-first triode, VT 2-second triode, J1-first relay, J2-second relay, J1-1-first relay normally open control contact, J1-2-first relay normally closed control contact, J2-1-second relay control contact, J2-2-first relay control contact.
Detailed Description
Referring to fig. 1, the flow meter in the anti-blocking cleaning device of the flow meter comprises a differential pressure transmitter 1, three groups of valves 2, a positive pressure measuring pipe 3, a negative pressure measuring pipe 4, a positive pressure pipe control valve 5, a negative pressure pipe control valve 6 and a measuring pipe 11. The measuring pipe 11 is fixedly connected to the blast furnace gas pipeline or the converter gas pipeline and is communicated with the blast furnace gas pipeline or the converter gas pipeline. The measuring pipe 11 is provided with a plurality of pressure taking holes, wherein the pressure taking hole facing the direction of the gas blowing is a positive pressure taking hole, and the pressure taking hole facing away from the direction of the gas blowing is a negative pressure taking hole. The upper ends of the positive pressure measuring pipe 3 and the negative pressure measuring pipe 4 are communicated with the differential pressure transmitter 1, and the lower ends are located inside the measuring pipe 11. And a positive pressure measuring pipe 3 and a negative pressure measuring pipe 4 between the measuring pipe 11 and the differential pressure transmitter 1 are provided with a three-group valve 2 together. And a positive pressure pipe control valve 5 is arranged on the positive pressure measuring pipe 3 between the measuring pipe 11 and the three groups of valves 2. And a negative pressure pipe control valve 6 is arranged on the negative pressure measuring pipe 4 between the measuring pipe 11 and the three groups of valves 2. When the flow meter is used for measuring the blast furnace gas or the converter gas, the measuring pipe 11 in the flow meter is communicated in the blast furnace gas pipeline or the converter gas pipeline, the three groups of valves 2, the positive pressure pipe control valve 5 and the negative pressure pipe control valve 6 are opened, and the differential pressure transmitter 1 can measure the flow in the blast furnace gas pipeline or the converter gas pipeline through the positive pressure measuring pipe 3 and the negative pressure measuring pipe 4.
Referring to fig. 1, 2 and 3, the anti-blocking cleaning device of the flowmeter comprises a first control valve 7, a second control valve 8, a third control valve 9, a fourth control valve 10, a nitrogen branch pipe 12, a main nitrogen pipe 13 and a nitrogen tank 14. The nitrogen tank 14 is communicated with a main nitrogen pipeline 13. The number of the nitrogen branch pipes 12 is two. The nitrogen main pipeline 13 is respectively communicated with the positive pressure measuring pipe 3 and the negative pressure measuring pipe 4 through a nitrogen branch pipeline 12. The nitrogen gas divides pipeline 12 to be equipped with spiral shower nozzle 16 respectively with the intercommunication end of malleation survey buret 3 and negative pressure survey buret 4, makes the nitrogen gas of nitrogen gas branch pipeline 12 exit end be the heliciform blowout, and what sweep is cleaner. A third control valve 9 is arranged on the nitrogen branch pipe 12 communicated with the positive pressure measuring pipe 3; and a fourth control valve 10 is arranged on the nitrogen branch pipe 12 communicated with the negative pressure measuring pipe 4. Be equipped with first control valve 7 on the malleation survey buret 3, first control valve 7 is located between malleation survey buret 3 and nitrogen gas branch pipe 12 intercommunication department and pressure differential transmitter 1. And a second control valve 8 is arranged on the negative pressure measuring pipe 4, and the second control valve 8 is positioned between the communication position of the negative pressure measuring pipe 4 and the nitrogen branch pipe 12 and the differential pressure transmitter 1.
Referring to fig. 1, 2 and 3, the anti-blocking cleaning device of the flowmeter is additionally provided with a CPU15, a first triode VT1, a first relay J1, a first relay normally open control contact J1-1, a second triode VT2, a second relay J2, a second relay normally open control contact J2-1 and a first relay normally closed control contact J2-2. The P2.0 interface of the CPU15 is connected with the base electrode of a first triode VT 1; the collector of the first triode VT1 is connected with the power supply after passing through the first relay J1, and the emitter is grounded; one end of the first relay normally open control contact J1-1 is connected with a power supply, and the other end is grounded after being connected with the first control valve 7 and the second control valve 8; the P2.1 interface of the CPU15 is connected with the base electrode of a second triode VT 2; the collector of the second triode VT2 is connected with the power supply after passing through the second relay J2, and the emitter is grounded; one end of the second relay normally-open control contact J2-1 is connected with a power supply, and the other end of the second relay normally-open control contact J2-1 is connected with the first relay normally-closed control contact J2-2, the third control valve 9 and the fourth control valve 10 and then grounded.
This flowmeter prevents stifled cleaning device's use does: after positive and negative pressure holes of a measuring pipe are blocked in the use process of the flowmeter, the CPU15 controls the first triode VT1 to be powered off, the normally open control contact J1-1 of the first relay is disconnected, the first control valve 7 and the second control valve 8 are in a power-off closing state to stop nitrogen, and the differential pressure transmitter 1 of the flowmeter is protected from being blown and damaged by the nitrogen; meanwhile, the CPU15 controls the second triode VT2 to be conducted, the second relay J2 is electrified, the normally open control contact J2-1 of the second relay is closed, and the third control valve 9 and the fourth control valve 10 are in an electrified and opened state; the nitrogen flows through the positive pressure measuring pipe 3 and the negative pressure measuring pipe 4 to enter the measuring pipe 11, and the positive and negative pressure taking holes of the measuring pipe 11 are purged. Under the original setting of the CPU15, after the nitrogen purging time is over, the CPU15 controls the first triode VT1 to be powered off, and then the first relay J1 is powered off; the normally open control contact J1-1 of the first relay is disconnected, so that the first control valve 7 and the second control valve 8 are in a power-off closed state; meanwhile, the CPU15 controls the second triode VT2 to be conducted, the second relay J2 is electrified, and a normally open control contact J2-1 of the second relay is closed; the third control valve 9 and the fourth control valve 10 are in an electrically open state for normal use of the flow meter.
Claims (3)
1. The utility model provides a stifled cleaning device is prevented to flowmeter which characterized in that: comprises a first control valve (7), a second control valve (8), a third control valve (9), a fourth control valve (10), a nitrogen branch pipeline (12), a nitrogen main pipeline (13) and a nitrogen tank (14); the flowmeter comprises a differential pressure transmitter (1), a positive pressure measuring pipe (3), a negative pressure measuring pipe (4) and a measuring pipe (11); the positive pressure measuring pipe (3) and the negative pressure measuring pipe (4) are respectively communicated with the measuring pipe (11); the nitrogen tank (14) is communicated with a nitrogen main pipeline (13); the number of the nitrogen branch pipelines (12) is two, and the main nitrogen pipeline (13) is respectively communicated with the positive pressure measuring pipe (3) and the negative pressure measuring pipe (4) through the two nitrogen branch pipelines (12); a third control valve (9) is arranged on the nitrogen branch pipe (12) communicated with the positive pressure measuring pipe (3), and a fourth control valve (10) is arranged on the nitrogen branch pipe (12) communicated with the negative pressure measuring pipe (4); be equipped with first control valve (7) on malleation survey buret (3) between malleation survey buret (3) and nitrogen gas branch pipeline (12) intercommunication department and pressure differential transmitter (1), be equipped with second control valve (8) on negative pressure survey buret (4) between negative pressure survey buret (4) and nitrogen gas branch pipeline (12) intercommunication department and pressure differential transmitter (1).
2. The anti-blocking cleaning device of the flowmeter of claim 1, characterized in that: and the nitrogen branch pipeline (12) and the communication ends of the positive pressure measuring pipe (3) and the negative pressure measuring pipe (4) are respectively provided with a spiral spray head (16).
3. The anti-blocking cleaning device for the flowmeter as claimed in claim 1 or 2, wherein: the relay is additionally provided with a CPU (15), a first triode (VT1), a first relay (J1), a first relay normally open control contact (J1-1), a second triode (VT2), a second relay (J2), a second relay normally open control contact (J2-1) and a first relay normally closed control contact (J2-2); the P2.0 interface of the CPU (15) is connected with the base electrode of a first triode (VT 1); the collector of the first triode (VT1) is connected with a power supply after passing through a first relay (J1), and the emitter is grounded; one end of a normally open control contact (J1-1) of the first relay is connected with a power supply, and the other end of the normally open control contact is connected with the first control valve (7) and the second control valve (8) and then grounded; the P2.1 interface of the CPU (15) is connected with the base electrode of a second triode (VT 2); the collector of the second triode (VT2) is connected with the power supply after passing through a second relay (J2), and the emitter is grounded; one end of the second relay normally-open control contact (J2-1) is connected with a power supply, and the other end of the second relay normally-open control contact is connected with the first relay normally-closed control contact (J2-2), the third control valve (9) and the fourth control valve (10) and then is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022207497.8U CN212963526U (en) | 2020-09-30 | 2020-09-30 | Anti-blocking cleaning device of flow meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022207497.8U CN212963526U (en) | 2020-09-30 | 2020-09-30 | Anti-blocking cleaning device of flow meter |
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| CN212963526U true CN212963526U (en) | 2021-04-13 |
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| CN202022207497.8U Active CN212963526U (en) | 2020-09-30 | 2020-09-30 | Anti-blocking cleaning device of flow meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418569A (en) * | 2021-06-18 | 2021-09-21 | 马鞍山钢铁股份有限公司 | Cleaning device for venturi tube flow measurement pipeline and control method thereof |
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2020
- 2020-09-30 CN CN202022207497.8U patent/CN212963526U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418569A (en) * | 2021-06-18 | 2021-09-21 | 马鞍山钢铁股份有限公司 | Cleaning device for venturi tube flow measurement pipeline and control method thereof |
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