CN213455951U - Novel defroster differential pressure on-line measuring device - Google Patents
Novel defroster differential pressure on-line measuring device Download PDFInfo
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- CN213455951U CN213455951U CN202022946825.6U CN202022946825U CN213455951U CN 213455951 U CN213455951 U CN 213455951U CN 202022946825 U CN202022946825 U CN 202022946825U CN 213455951 U CN213455951 U CN 213455951U
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Abstract
The utility model discloses a novel defroster differential pressure on-line measuring device, including washing the pipeline, using gas pipeline, sample pipeline, measuring tube way and sweeping the pipeline. The flushing water pipeline of the demister is provided with a nozzle, and the middle position of the flushing water pipeline of the demister is additionally provided with a tee joint which is connected with a pneumatic pipe clamp valve. The tower wall is welded with a threaded connector with two ends, so that the pipe clamp valve can be conveniently connected with an air pipeline. A demister flushing water pipe outside the tower is connected with an automatic flushing valve of a demister pipeline and is connected with external process water; in addition, a three-way access sampling automatic isolating valve is arranged on a pipeline above and in front of the automatic flushing valve of the demister pipeline, and the anti-blocking wind pressure sampling device, the differential pressure measuring pipeline, the air source ball valve and the differential pressure transmitter are connected. The upper part and the lower part of the demister are respectively provided with one set of the device. The utility model discloses a defroster differential pressure detection device reasonable in design can more accurately detect the pressure differential about the defroster module in certain region of absorption tower, avoids the local jam of defroster module, collapses, prevents the defroster scale deposit, makes its safety and stability operation.
Description
Technical Field
The utility model relates to an absorption tower defroster differential pressure measurement field, concretely relates to novel defroster differential pressure on-line measuring device.
Background
At present, for a wet absorption system commonly used in a thermal power plant, two points are generally selected on the tower wall of an inlet and an outlet of a demister of an absorption tower for demister differential pressure, the total pressure of the inlet and the outlet is measured, and then differential pressure calculation is carried out to obtain the demister differential pressure. Due to the point taking position and the flue gas flow field, the obtained differential pressure has no representativeness to the differential pressure of the whole section of the demister, the resistance and the blocking condition of a demister module can not be comprehensively reflected, and particularly the problem of inaccurate monitoring of a large-diameter absorption tower exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the novel defroster differential pressure on-line measuring that proposes device.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a novel demister differential pressure online detection device comprises an absorption tower and a demister in absorption, and is further provided with a flushing pipeline, an air pipeline, a sampling pipeline, a measuring pipeline and a purging pipeline; the gas pipeline and the sampling pipeline are respectively connected with the flushing pipeline; the measuring pipeline and the purging pipeline are respectively connected with a sampling pipeline; the flushing pipeline comprises a demister flushing pipeline and a demister pipeline automatic flushing valve; the gas pipeline comprises a pneumatic pipe clamp valve, a gas pipeline for the pipe clamp valve, an electromagnetic valve and a gas source ball valve for miscellaneous gas.
Preferably, the flushing pipeline is also provided with a nozzle, an expansion joint and a demister flushing water port; the nozzle is arranged on the demister flushing pipeline; a three-way connector is also arranged between the automatic flushing valve of the demister pipeline and the expansion joint; the three-way connector is connected to a sampling pipeline, a purging pipeline and a measuring pipeline.
Preferably, the air pipeline for the pipe clamping valve in the air pipeline is also divided into an air pipeline for the pipe clamping valve in the tower inner pipe and an air pipeline for the pipe clamping valve outside the tower; the tower wall of the absorption tower is provided with a threaded movable joint; one end of the gas pipeline for the tower inner pipe pinch valve is connected with a threaded movable joint on the inner tower wall; the other end of the air pipeline for the tower inner pipe clamp valve is connected with the pneumatic pipe clamp valve; the pneumatic pipe clamp valve is also connected with a demister flushing pipeline; one end of the air pipeline for the tower outer pipe pinch valve is connected with a threaded movable joint on the outer tower wall; and the other end of the air pipeline for the tower outer pipe clamp valve is connected with an electromagnetic valve and a miscellaneous gas source ball valve.
The gas pipeline for the tower inner tube pinch valve is made of a material resistant to chloride ion corrosion, and the gas pipeline for the tower outer tube pinch valve is made of a material resistant to atmospheric corrosion; the adoption screw thread union coupling can make things convenient for the pipeline to dismantle, makes things convenient for the maintenance and the inspection in later stage.
The gas pipeline for the tower inner pipe pinch valve is arranged along the demister flushing water pipeline and is fixed on the pipeline by a pipe hoop.
The electromagnetic valve adopts a three-position electromagnetic valve and is provided with two switches of air inlet and air outlet.
Preferably, a three-way interface is further arranged between the pneumatic pipe clamping valve and the electromagnetic valve; the three-way connector is connected with a threaded union on the inner tower wall and the outer tower wall of the absorption tower and a demister flushing pipeline; a three-way connector is also arranged between the demister flushing pipeline and the pneumatic pipe clamp valve; the pneumatic pipe clamp valves are all fixed by adopting flange connecting bolts.
Preferably, the sampling pipeline comprises a sampling automatic isolating valve and an anti-blocking wind pressure sampling device.
The sampling automatic isolating valve is vertically installed; the anti-blocking wind pressure sampling device is also vertically arranged above the sampling automatic isolating valve.
Preferably, the measurement pipeline comprises a differential pressure measurement pipeline, a transmitter isolation air source ball valve and a differential pressure transmitter.
And the two ends of the differential pressure transmitter are respectively provided with a transmitter isolation air source ball valve so as to isolate smoke when the differential pressure transmitter is overhauled.
Preferably, the purge pipeline comprises a gas source ball valve for purge gas, a purge gas interface and a gas source ball valve for blowdown.
And the air hose is connected to the scavenging air interface at an irregular period, and the anti-blocking air pressure sampling device is purged.
When the differential pressure transmitter is in a high position, the air source ball valve for sewage disposal can be eliminated. The air inlet ends of the impurity air and the purge air are provided with a purge air source ball valve, and the purge air source ball valve can be isolated from the outside. When purging is performed, the gas source ball valve for purging gas is opened, and the gas source ball valve for blowdown and the automatic sampling closing valve are opened (not opened simultaneously, purging is performed respectively).
Preferably, the demister is provided with the above devices at the upper part and the lower part.
A novel defroster differential pressure on-line measuring device, defroster all can set up one set even many sets of above-mentioned device from top to bottom.
A novel demister differential pressure on-line detection device comprises the following steps:
s1: when the pressure difference between the upper part and the lower part of the demister exceeds the standard, the electromagnetic valve is opened, and compressed air is filled in the pneumatic pipe clamp valve;
s2: firstly, closing a pneumatic pipe clamp valve filled with compressed air, then closing an electromagnetic valve and a sampling automatic isolating valve, then opening a demister washing water automatic valve, and starting washing a demister module by process water;
s3: after 1 cycle of flushing, closing the automatic valve of the flushing water of the demister;
s4: opening the electromagnetic valve, releasing the pressure of the air in the pneumatic pipe clamp valve, and opening the pneumatic pipe clamp valve;
s5: and opening the sampling automatic isolating valve, and starting to monitor the pressure difference between the two ends of the demister module by the demister differential pressure transmitter.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a novel defroster differential pressure on-line measuring device, the device can carry out the multiple spot in the tower and arrange, and it is accurate to measure. According to the difference of the differential pressure of each point, the washing is carried out at multiple points as required. Compared with the original flushing system, the scaling state of the demister can be known more accurately, and the measurement is more accurate. Through the control of pneumatic pipe clamp valve, the defroster washes the water pipe and can undertake the function of washing the defroster module, can undertake the function of flue gas sample again. Because the existence that washes periodically, defroster wash water pipe can not block up and the scale deposit, and flue gas sampling channel is smooth and easy.
Drawings
FIG. 1 is a schematic view of a novel demister differential pressure on-line detection device combination system;
fig. 2 is a schematic diagram of a novel demister differential pressure on-line detection device system.
The designations in the drawings have the following meanings: 1. demister flushing pipe, 2, pneumatic pipe clamp valve, 3, pipe clamp valve is with the gas pipeline, 4, the solenoid valve, 5, the automatic flushing valve of defroster pipeline, 6, the automatic isolating valve of sample, 7, prevent stifled wind pressure sampling device, 8, differential pressure measurement pipeline, 91, gas source ball valve is used to miscellaneous gas, 92, the gas source ball valve is used in the transmitter isolation, 93, the gas source ball valve is used to purge gas, 94, the gas source ball valve is used to blowdown, 10, differential pressure transmitter.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 and fig. 2, the utility model provides a novel demister differential pressure on-line detection device, which comprises an absorption tower and a demister in the absorption tower, wherein the novel demister differential pressure on-line detection device is further provided with a flushing pipeline, an air pipeline, a sampling pipeline, a measuring pipeline and a purging pipeline; the gas pipeline and the sampling pipeline are respectively connected with the flushing pipeline; the measuring pipeline and the purging pipeline are respectively connected with a sampling pipeline; the flushing pipeline comprises a demister flushing pipeline 1 and a demister pipeline automatic flushing valve 5; the gas pipeline comprises a pneumatic pipe clamp valve 2, a gas pipeline 3 for the pipe clamp valve, an electromagnetic valve 4 and a gas source ball valve 91 for miscellaneous gas.
Preferably, the flushing pipeline is also provided with a nozzle, an expansion joint and a demister flushing water port; the nozzle is arranged on the demister flushing pipeline 1; a three-way connector is also arranged between the automatic flushing valve 5 of the demister pipeline and the expansion joint; the three-way connector is connected to a sampling pipeline, a purging pipeline and a measuring pipeline.
Preferably, the air pipeline 3 for the pipe clamp valve in the air pipeline is also divided into an air pipeline for the pipe clamp valve in the tower and an air pipeline for the pipe clamp valve outside the tower; a threaded movable joint is arranged on the tower wall of the absorption tower; one end of the gas pipeline for the tower inner pipe pinch valve is connected with a threaded movable joint on the inner tower wall; the other end of the gas pipeline for the tower inner tube pinch valve is connected with the pneumatic tube pinch valve 2; the pneumatic pipe clamp valve 2 is also connected with a demister flushing pipeline 1; one end of the air pipeline for the tower outer pipe pinch valve is connected with a threaded movable joint on the outer tower wall; the other end of the air pipeline for the tower outer pipe clamp valve is connected with the electromagnetic valve 4 and the miscellaneous gas source ball valve 91.
The gas pipeline for the tower inner tube pinch valve is made of a material resistant to chloride ion corrosion, and the gas pipeline for the tower outer tube pinch valve is made of a material resistant to atmospheric corrosion; the adoption screw thread union coupling can make things convenient for the pipeline to dismantle, makes things convenient for the maintenance and the inspection in later stage.
The gas pipeline for the tower inner pipe pinch valve is arranged along the demister flushing water pipeline 1 and is fixed on the pipeline by a pipe hoop.
The electromagnetic valve 4 is a three-position electromagnetic valve and is provided with two switches of air inlet and air outlet.
Preferably, a three-way interface is further arranged between the pneumatic pipe clamp valve 2 and the electromagnetic valve 4; the three-way connector is connected with a threaded union on the inner tower wall and the outer tower wall of the absorption tower and a demister flushing pipeline 1; a three-way interface is also arranged between the demister flushing pipeline 1 and the pneumatic pipe clamping valve 2; and the pneumatic pipe clamp valves 2 are all fixed by adopting flange connecting bolts.
Preferably, the sampling pipeline comprises a sampling automatic isolating valve 6 and an anti-blocking wind pressure sampling device 7.
The sampling automatic isolating valve 6 is vertically installed; the anti-blocking wind pressure sampling device 7 is also vertically arranged above the sampling automatic isolating valve 6.
Preferably, the measurement lines include differential pressure measurement lines, 8-transmitter isolation gas source ball valve 92, and differential pressure transmitter 10.
The differential pressure transmitter 10 is provided at both ends with transmitter isolation gas source ball valves 92 so that the differential pressure transmitter can isolate the flue gas during maintenance.
Preferably, the purge line includes a purge gas source ball valve 93, a purge gas port, and a blowdown gas source ball valve 94.
And the air hose is connected to the scavenging air interface at an irregular period, and the anti-blocking air pressure sampling device is purged.
The blowdown air supply ball valve 94 may be eliminated when the differential pressure transmitter 10 is in the high position. The inlet end of the impurity gas and the purge gas is provided with an impurity gas source ball valve 91 and a purge gas source ball valve 93, which can be isolated from the outside. When purging is performed, the purge gas source ball valve 91 and the purge gas source ball valve 93 are opened, and the blowdown gas source ball valve 94 and the sampling automatic block valve 6 are opened (not opened at the same time, purging is performed separately).
Preferably, the demister is provided with the above devices at the upper part and the lower part.
A novel defroster differential pressure on-line measuring device, defroster all can set up one set even many sets of above-mentioned device from top to bottom.
A novel demister differential pressure on-line detection device comprises the following steps:
s1: when the pressure difference between the upper part and the lower part of the demister exceeds the standard, the electromagnetic valve 4 is opened, so that the pneumatic pipe clamp valve is filled with compressed air;
s2: firstly, closing a pneumatic pipe clamp valve filled with compressed air, then closing the electromagnetic valve 4 and the sampling automatic isolating valve, then opening a demister washing water automatic valve, and starting washing a demister module by process water;
s3: after 1 cycle of flushing, closing the automatic valve of the flushing water of the demister;
s4: opening the electromagnetic valve, releasing the pressure of the air in the pneumatic pipe clamp valve, and opening the pneumatic pipe clamp valve;
s5: and opening the sampling automatic isolating valve, and starting to monitor the pressure difference between the two ends of the demister module by the demister differential pressure transmitter.
The novel demister differential pressure on-line detection device has the working process as follows:
the gas source ball valve 91 for miscellaneous gas and the gas source ball valve 92 for transmitter isolation are normally opened; the purge gas source ball valve 93 and the blowdown gas source ball valve 94 are normally closed.
When the differential pressure measurement pipeline is blocked, the purge gas source ball valve 93 and the blowdown gas source ball valve 94 are opened, and the transmitter isolation gas source ball valve 92 and the sampling automatic isolating valve 6 are purged.
When the sampling pipeline is blocked, the air source ball valve 93 for purge gas and the automatic sampling isolating valve 6 are opened, and the air source ball valve 92 for transmitter isolation and the air source ball valve 94 for blowdown are closed for purging.
When the pressure difference exceeds the standard on the defroster module, open solenoid valve 4, be full of compressed air with 2 the inside of pneumatic tube clamp valve, pneumatic tube clamp valve 2 closes like this, closes solenoid valve 4 and the automatic block valve 6 of sample again, then opens defroster sparge water automatic valve 5, and the process water begins to wash the defroster module.
After 1 cycle of washing, close defroster sparge water automatic valve 5, open solenoid valve 4 again, with the air pressure release of pneumatic tube clamp valve 2 the inside, pneumatic tube clamp valve 2 is opened, and the water in the defroster pipeline is all discharged totally like this. Then the sampling automatic block valve 6 is opened, and the demister differential pressure transmitter 10 starts to monitor the pressure difference between the two ends of the demister module. This is repeated for the next operation.
The present invention has been described in relation to the above embodiments, which are only examples for implementing the present invention. It should be noted that the disclosed embodiments do not limit the scope of the invention. On the contrary, all changes and modifications which do not depart from the spirit and scope of the present invention are deemed to fall within the scope of the present invention.
Claims (8)
1. The utility model provides a novel defroster differential pressure on-line measuring device, includes the defroster in absorption tower and the absorption, its characterized in that: the novel demister differential pressure online detection device is also provided with a flushing pipeline, an air pipeline, a sampling pipeline, a measuring pipeline and a purging pipeline; the gas pipeline and the sampling pipeline are respectively connected with the flushing pipeline; the measuring pipeline and the purging pipeline are respectively connected with a sampling pipeline; the flushing pipeline comprises a demister flushing pipeline (1) and a demister pipeline automatic flushing valve (5); the gas pipeline comprises a pneumatic pipe clamp valve (2), a gas pipeline (3) for the pipe clamp valve, an electromagnetic valve (4) and a gas source ball valve (91) for miscellaneous gas.
2. The novel demister differential pressure on-line detection device of claim 1, characterized in that: the flushing pipeline is also provided with a nozzle, an expansion joint and a demister flushing water port; the nozzle is arranged on the demister flushing pipeline (1); a three-way connector is also arranged between the automatic flushing valve (5) of the demister pipeline and the expansion joint; the three-way connector is connected to a sampling pipeline, a purging pipeline and a measuring pipeline.
3. The novel demister differential pressure on-line detection device of claim 2, characterized in that: the air pipeline (3) for the pipe clamp valve in the air pipeline is also divided into an air pipeline for the pipe clamp valve in the tower inner pipe and an air pipeline for the pipe clamp valve outside the tower; the tower wall of the absorption tower is provided with a threaded movable joint; one end of the gas pipeline for the tower inner pipe pinch valve is connected with a threaded movable joint on the inner tower wall; the other end of the air pipeline for the tower inner pipe clamp valve is connected with the pneumatic pipe clamp valve (2); the pneumatic pipe clamp valve (2) is also connected with a demister flushing pipeline (1); one end of the air pipeline for the tower outer pipe pinch valve is connected with a threaded movable joint on the outer tower wall; the other end of the air pipeline for the tower outer pipe clamp valve is connected with an electromagnetic valve (4) and a miscellaneous gas source ball valve (91).
4. The novel demister differential pressure on-line detection device of claim 3, characterized in that: a three-way interface is also arranged between the pneumatic pipe clamp valve (2) and the electromagnetic valve (4); the three-way connector is connected with a threaded union on the inner tower wall and the outer tower wall of the absorption tower and a demister flushing pipeline (1); a three-way connector is also arranged between the demister flushing pipeline (1) and the pneumatic pipe clamp valve (2); and the pneumatic pipe clamp valves (2) are fixed by adopting flange connecting bolts.
5. The novel demister differential pressure on-line detection device of claim 1, characterized in that: the sampling pipeline comprises a sampling automatic isolating valve (6) and an anti-blocking wind pressure sampling device (7).
6. The novel demister differential pressure on-line detection device of claim 1, characterized in that: the measurement pipeline comprises a differential pressure measurement pipeline (8), a gas source ball valve (92) for transmitter isolation and a differential pressure transmitter (10).
7. The novel demister differential pressure on-line detection device of claim 1, characterized in that: the purge pipeline comprises a gas source ball valve (93) for purge gas, a purge gas interface and a gas source ball valve (94) for gas blowdown.
8. The novel demister differential pressure on-line detection device of claim 4, characterized in that: the upper and lower parts of a demister in the absorption tower are provided with the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022946825.6U CN213455951U (en) | 2020-12-11 | 2020-12-11 | Novel defroster differential pressure on-line measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022946825.6U CN213455951U (en) | 2020-12-11 | 2020-12-11 | Novel defroster differential pressure on-line measuring device |
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| CN213455951U true CN213455951U (en) | 2021-06-15 |
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| CN202022946825.6U Active CN213455951U (en) | 2020-12-11 | 2020-12-11 | Novel defroster differential pressure on-line measuring device |
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Address after: 224051 innovation center, 42 environmental protection Avenue, environmental protection science and Technology City, Tinghu District, Yancheng City, Jiangsu Province Patentee after: Jiangsu Kunlun Internet Technology Co.,Ltd. Address before: 224051 innovation center, 42 environmental protection Avenue, environmental protection science and Technology City, Tinghu District, Yancheng City, Jiangsu Province Patentee before: Kunyue Internet Environmental Technology (Jiangsu) Co.,Ltd. |
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