CN204855079U - Pressure, automatic device that sweeps of differential pressure measurement - Google Patents
Pressure, automatic device that sweeps of differential pressure measurement Download PDFInfo
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- CN204855079U CN204855079U CN201520350523.9U CN201520350523U CN204855079U CN 204855079 U CN204855079 U CN 204855079U CN 201520350523 U CN201520350523 U CN 201520350523U CN 204855079 U CN204855079 U CN 204855079U
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- pressure
- impulse
- pipeline
- differential pressure
- gas
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Abstract
The utility model provides a pressure, automatic device that sweeps of differential pressure measurement, draw pressure pipe, purging pipeline including sweeping, draw and press pipeline, changer and air supply, sweep to draw and press the pipe for the three -way pipe, sweep draw press the pipe be equipped with draw impress mouthful, the bypass sweeps mouthful and draw extrusion mouthful, the bypass sweeps the mouth and is connected with the air supply through purging pipeline, it presses the pipeline to be connected with the changer through drawing to draw the extrusion mouth, draw and press the pipeline to include U type pipe. The beneficial effects of the utility model are that the entering is drawn and is pressed the condensation through U type pipe time of intraductal moisture, prevents that moisture from directly being blowd in the changer by the flue gas, influences the measurement accuracy and the life of changer.
Description
Technical field
The utility model belongs to pressure-detecting device field, especially relates to a kind of desulfuration absorbing tower pressure, differential pressure measurement automatic blowout device.
Background technology
Domestic running in the process using boiler, all to add desulfurizer after boiler, for the sulfur dioxide gas in absorption boiler flue gas.Wet Flue Gas Desulfurization Technology plays an important role in China's prevention and control of air pollution field, and spray column flue gas desulfurization technique is the mainstream technology of sulfur removal technology.Spray column is made up of Multi-layer sprinkling layer, and every layer of spraying layer arranges multiple nozzle for atomization absorption agent slurry, the flue gas containing pollutant sulphuric dioxide with by the drop contact after nozzle atomization, and then remove the sulphuric dioxide in flue gas.In wet desulfurization system, flue gas is the Main Tobacco Planting atmidometer that desulfurization blower fan needs customer service with the contact resistance of drop in absorption tower.Flue gas is the loss of spray column flue gas pressures with the contact resistance of drop in absorption tower.Various liquid-gas ratios, flue gas flow rate and the nozzle pressure in spray column can be regulated by the pressure of flue gas in spray column, differential pressure measurement data, ensure the safe and reliable operation of whole spray column.
Owing to containing a large amount of moisture and dust in flue gas in spray column, easily cause the phenomenon that measurement mechanism sampling line blocks, thus cannot effectively, accurately, in real time, continuous print monitors the pressure at scene, differential pressure measuring point, affect the safe operation of equipment, the normal operation of unit cannot be ensured.In prior art, conventional blower of compensated wind-pressure measuring anti-clogging, utilizes the method for ventilating in measuring point continuously, makes measuring point anti-blocking.And utilize hydromechanical dynamic pressure compensation method, eliminate because of the raw differential pressure of blowback scavenging miscarriage, to ensure true measurement.
CN200520074921 discloses a kind of blower of compensated wind-pressure measuring anti-clogging, belongs to a kind of anti-clogging on fluidized-bed combustion boiler.According to design proposal provided by the utility model, have interior pipe within the outer tube, and the outlet of interior pipe is positioned at outer tube, the outlet position that outer tube corresponds to interior pipe connects pressure guiding pipe, the entrance point of interior pipe stretches out outer tube, and installs at this end of outer tube the clamper being used for pipe in fixing and adjustment.This device avoids latch up phenomenon by the mode be directly installed on by compensation system on the body purging sampler, improves the security of boiler operatiopn.
CN200520139694 discloses a kind of block-prevention purging device for wind pressure measuring, it comprises pressure regulation moisture trap, spinner-type flowmeter, gas blow pipe and pressure pipe, the outer end of pressure pipe is connected with tensimeter by pressure unit, moisture trap there is air intake opening, this air intake opening is connected with source of the gas, and its gas outlet connects with the import of spinner-type flowmeter.Be characterized in that there is compensation mechanism gas blow pipe air intake opening one end, this compensation mechanism contains right cylinder, and spinner-type flowmeter is connected with cylindrical one end by pipeline.Cylindrical axis has center pit, is furnished with adjusting bolt in that section of radial hole of center pit side, and that section of radial hole of its opposite side is communicated with pressure pipe.This device can prevent the pressure pipe mouth of pipe from blocking, and guarantees the accuracy of measurement result and the normal operation of boiler.Can be used for the negative pressure measuring coal-burning type boiler burner hearth.
CN200620068391 discloses a kind of blower of compensated wind-pressure measuring anti-clogging, specifically detects accurately continuously for boiler of power plant flow, blast, belongs to and detects blow device technical field.It mainly adopts at housing built with tensimeter, pressure adjustment assembly and spinner device, and anti-blocking sampler is connected on housing, and feature arranges compensation system in housing, and compensation system connects transmitter.Compensation system is made up of compensator body, needle-like, and needle-like is contained in compensator body.This apparatus structure is simple, compact, rationally; Easy to adjust, non-fault, can be anti-blocking, effectively can sample again, correctly measure, and thoroughly can solve that dust is many, concentration is large, graininess and the blocking of condition of high temperature pressure survey pipeline and pipeline oxidation burn badly damaged phenomena; The degree of accuracy of detected pressures can be improved, thus reliably ensure that the normal operation of equipment and control system.
Because the flue gas in desulfuration absorbing tower contains a large amount of moisture, adopt above-mentioned pressure survey anti-clogging, the moisture in flue gas can enter in transmitter, affects the measuring accuracy of pressure and the serviceable life of transmitter.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the accurate pressure of long service life, measurement result, differential pressure measurement automatic blowout device, is especially applicable to the measurement of pressure, differential pressure in desulfuration absorbing tower.
The technical solution of the utility model is: a kind of pressure, differential pressure measurement automatic blowout device, comprise and purge pressure guiding pipe, scavenging pipeline, impulse pipeline, transmitter and source of the gas, described purging pressure guiding pipe is three-way pipe, purge pressure guiding pipe and be provided with the outlet of impulse entrance, bypass blow valve port and impulse, described bypass blow valve port is connected with source of the gas by scavenging pipeline, described impulse outlet is connected with transmitter by impulse pipeline, and described impulse pipeline comprises U-tube.
When the utility model pressure, differential pressure measurement automatic blowout device are installed and used, impulse entrance is stretched in absorption tower, purge pressure guiding pipe and be connected with absorption tower.Pressurized air enters bypass blow valve port by scavenging pipeline, purges impulse entrance, prevents the dust in flue gas or moisture blocking impulse entrance.Containing a large amount of moisture in the flue gas of desulfuration absorbing tower, impulse pipeline is provided with the flow direction that U-tube can change flue gas, the moisture in flue gas is prevented directly to be blown in transmitter, moisture simultaneously in flue gas can also condensation in U-tube, and the moisture that further avoid in flue gas enters transmitter.Improve measuring accuracy and the serviceable life of transmitter.
One arm end of described U-tube exports with impulse and is connected, and another arm of U-tube is connected with transmitter.
One arm of described U-tube is identical with the direction that impulse exports.
Bending along with U-tube after directly entering U-tube from the flue gas purging pressure guiding pipe impulse outlet outflow, flow of flue gas direction changes, and avoids moisture to be directly blown in transmitter.
One end of described U-tube exports with impulse and is welded to connect or is threaded.
The setting parallel to the ground of described U-tube place plane.
Described impulse pipeline is provided with protective valve.
Scavenging pipeline is provided with volume control device, gas-liquid separation device and blow down valve, and described volume control device, gas-liquid separation device, blow down valve are connected by scavenging pipeline successively with source of the gas.
Pressurized air in source of the gas enters purging pressure guiding pipe through blow down valve, gas-liquid separation device and volume control device from bypass blow valve port successively by scavenging pipeline, purges purging pressure guiding pipe.Because the water vapor in air can be condensed into water by air after overcompression, volume control device is entered in order to prevent the water droplet in pressurized air, the scavenging pipeline of the utility model between blow down valve and volume control device installs gas-liquid separation device, to ensure that equipment normally runs for a long time.
Described scavenging pipeline is also provided with pressure adjustment assembly, and described pressure adjustment assembly is arranged on the scavenging pipeline between volume control device and gas-liquid separation device.
Absorption tower wall is provided with the joint sleeve be connected with absorption tower, and the impulse entrance of described purging pressure guiding pipe stretches in joint sleeve, purges pressure guiding pipe and joint sleeve Flange joint.
The purging pressure guiding pipe of two pressure, differential pressure automatic blowout device is welded on same ring flange, and is connected with joint sleeve by flange.
At same measurement point, two pressure, differential pressure automatic blowout device are installed, the normal operation of whole pressure-measuring system when pressure, a differential pressure measuring installation fault, can also be ensured wherein.
The advantage that the utility model has and good effect are: employing pressure, differential pressure automatic blowout device can avoid the water in flue gas to enter in transmitter, improve measuring accuracy and the serviceable life of transmitter.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
In figure:
1, absorption tower 2, purging pressure guiding pipe 21, impulse outlet 22, bypass blow valve port
23, impulse entrance 3, transmitter 4, impulse pipeline 41, U-tube
42, protective valve 5, source of the gas 6, scavenging pipeline 61, volume control device
62, pressure adjustment assembly 63, gas-liquid separation device 64, blow down valve
Embodiment
As shown in Figure 1, the utility model a kind of pressure, differential pressure measurement automatic blowout device, comprise and purge pressure guiding pipe 2, scavenging pipeline 6, impulse pipeline 4, transmitter 3 and source of the gas 5, purging pressure guiding pipe 2 is three-way pipe, purge pressure guiding pipe 2 and be provided with impulse entrance 23, bypass blow valve port 22 and impulse outlet 21, impulse entrance 23 to stretch in absorption tower 1 and is connected with absorption tower 1; Bypass blow valve port 22 is connected with source of the gas 5 by scavenging pipeline 6; Impulse outlet 21 is connected with transmitter 3 by impulse pipeline 4, and impulse pipeline 4 comprises one section of U-tube 41.
Absorption tower 1 wall can be provided with the joint sleeve be connected with absorption tower 1, the impulse entrance 23 purging pressure guiding pipe 2 stretches in joint sleeve, purges pressure guiding pipe 2 and joint sleeve Flange joint.The purging pressure guiding pipe 2 of two pressure, differential pressure measurement automatic blowout device can be welded on same ring flange, and be connected with joint sleeve by flange.Install two at a measurement point and purge pressure guiding pipe 2, prevent pressure, differential pressure measurement automatic blowout device from when breaking down, affecting the operation of whole system.
End and the impulse of one arm of U-tube 41 export 21 and are directly connected, and the other end of U-tube 41 is connected with transmitter 3 by other parts of impulse pipeline 4.One arm of U-tube 41 is identical with the direction that impulse exports 21.One arm of U-tube 41 and impulse export 21 can for being welded to connect, also can for being threaded.The setting parallel to the ground of U-tube 41 place plane.Ensure the condensation effect of liquid in U-tube 41.
Impulse pipeline 4 is provided with the protective valve 42 for the protection of transmitter 3.
Scavenging pipeline 6 can also be provided with volume control device 61, gas-liquid separation device 63 and blow down valve 64, volume control device 61, gas-liquid separation device 63, blow down valve 64 are connected by scavenging pipeline 6 successively with source of the gas 5.Scavenging pipeline can also be provided with pressure adjustment assembly 62 further, and pressure adjustment assembly 62 is arranged on the scavenging pipeline 6 between volume control device 61 and gas-liquid separation device 63.
The course of work of this example: open blow down valve, pressurized air in source of the gas 5 is separated moisture wherein through gas-liquid separation device 63, then pressure is regulated through pressure adjustment assembly 62, again through volume control device 61 adjust flux, finally enter from the bypass blow valve port 22 purging pressure guiding pipe 2 and purge pressure guiding pipe 2, then flow out from impulse entrance 23, impulse entrance 23 is purged, prevent blocking from purging pressure guiding pipe 2.Flue gas in absorption tower 1 enters purging pressure guiding pipe 2 from impulse entrance 23 and enters U-tube 41 through impulse outlet, moisture in flue gas and water vapor are in U-tube 41 after condensation, backflow, absorption tower 1 is reentered under the effect of purge gas, flue gas other parts by impulse pipeline 4 after U-tube 41 enter transmitter 3, measure the pressure of measurement point or the differential pressure between this measurement point and other measurement points by transmitter 3.
Above an embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (10)
1. a pressure, differential pressure measurement automatic blowout device, comprise and purge pressure guiding pipe, scavenging pipeline, impulse pipeline, transmitter and source of the gas, described purging pressure guiding pipe is three-way pipe, purge pressure guiding pipe and be provided with the outlet of impulse entrance, bypass blow valve port and impulse, described bypass blow valve port is connected with source of the gas by scavenging pipeline, described impulse outlet is connected with transmitter by impulse pipeline, it is characterized in that: described impulse pipeline comprises U-tube.
2. a kind of pressure according to claim 1, differential pressure measurement automatic blowout device, is characterized in that: an arm end of described U-tube exports with impulse and is connected, and another arm of U-tube is connected with transmitter.
3. a kind of pressure according to claim 2, differential pressure measurement automatic blowout device, is characterized in that: an arm of described U-tube is identical with the direction that impulse exports.
4. a kind of pressure according to Claims 2 or 3, differential pressure measurement automatic blowout device, is characterized in that: one end of described U-tube exports with impulse and is welded to connect or is threaded.
5. a kind of pressure according to claim 4, differential pressure measurement automatic blowout device, is characterized in that: the setting parallel to the ground of described U-tube place plane.
6. a kind of pressure according to claim 1, differential pressure measurement automatic blowout device, is characterized in that: described impulse pipeline is provided with protective valve.
7. a kind of pressure according to claim 1, differential pressure measurement automatic blowout device, it is characterized in that: scavenging pipeline is provided with volume control device, gas-liquid separation device and blow down valve, described volume control device, gas-liquid separation device, blow down valve are connected by scavenging pipeline successively with source of the gas.
8. a kind of pressure according to claim 7, differential pressure measurement automatic blowout device, it is characterized in that: described scavenging pipeline is also provided with pressure adjustment assembly, described pressure adjustment assembly is arranged on the scavenging pipeline between volume control device and gas-liquid separation device.
9. a kind of pressure according to claim 1, differential pressure measurement automatic blowout device, it is characterized in that: absorption tower wall is provided with the joint sleeve be connected with absorption tower, the impulse entrance of described purging pressure guiding pipe stretches in joint sleeve, purges pressure guiding pipe and joint sleeve Flange joint.
10. a kind of pressure according to claim 9, differential pressure measurement automatic blowout device, is characterized in that: the purging pressure guiding pipe of two pressure, differential pressure automatic blowout device is welded on same ring flange, and is connected with joint sleeve by flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520350523.9U CN204855079U (en) | 2015-05-27 | 2015-05-27 | Pressure, automatic device that sweeps of differential pressure measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520350523.9U CN204855079U (en) | 2015-05-27 | 2015-05-27 | Pressure, automatic device that sweeps of differential pressure measurement |
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| Publication Number | Publication Date |
|---|---|
| CN204855079U true CN204855079U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520350523.9U Expired - Fee Related CN204855079U (en) | 2015-05-27 | 2015-05-27 | Pressure, automatic device that sweeps of differential pressure measurement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910753A (en) * | 2016-05-09 | 2016-08-31 | 华东理工大学 | Cinder notch differential pressure measurement device and method |
| CN109126641A (en) * | 2017-06-15 | 2019-01-04 | 神华集团有限责任公司 | Fischer-tropsch synthetic catalyst fluid bed reduction device and on-line period method |
| CN109341938A (en) * | 2018-11-26 | 2019-02-15 | 上海意丰机电科技开发有限公司 | A kind of anti-blocking pressure measuring unit |
| CN110736581A (en) * | 2019-09-17 | 2020-01-31 | 北京科技大学 | method and system for measuring pressure loss of converter oxygen lance pipeline |
| CN113390556A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Integrated one-way sweeping pressure measuring instrument |
| CN113390557A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Novel purging flow channel structure and pressure measuring instrument |
-
2015
- 2015-05-27 CN CN201520350523.9U patent/CN204855079U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105910753A (en) * | 2016-05-09 | 2016-08-31 | 华东理工大学 | Cinder notch differential pressure measurement device and method |
| CN105910753B (en) * | 2016-05-09 | 2019-02-22 | 华东理工大学 | A kind of cinder notch pressure difference measuring device and its method |
| CN109126641A (en) * | 2017-06-15 | 2019-01-04 | 神华集团有限责任公司 | Fischer-tropsch synthetic catalyst fluid bed reduction device and on-line period method |
| CN109341938A (en) * | 2018-11-26 | 2019-02-15 | 上海意丰机电科技开发有限公司 | A kind of anti-blocking pressure measuring unit |
| CN110736581A (en) * | 2019-09-17 | 2020-01-31 | 北京科技大学 | method and system for measuring pressure loss of converter oxygen lance pipeline |
| CN113390556A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Integrated one-way sweeping pressure measuring instrument |
| CN113390557A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Novel purging flow channel structure and pressure measuring instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20210527 |
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| CF01 | Termination of patent right due to non-payment of annual fee |