CN201199168Y - Block-resistant structure for liquid level meter on decompression tower bottom - Google Patents
Block-resistant structure for liquid level meter on decompression tower bottom Download PDFInfo
- Publication number
- CN201199168Y CN201199168Y CNU2008200216538U CN200820021653U CN201199168Y CN 201199168 Y CN201199168 Y CN 201199168Y CN U2008200216538 U CNU2008200216538 U CN U2008200216538U CN 200820021653 U CN200820021653 U CN 200820021653U CN 201199168 Y CN201199168 Y CN 201199168Y
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- tower bottom
- level measuring
- steam
- steam pipe
- differential pressure
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Abstract
The utility model relates to an anti-block structure of a vacuum tower bottom liquid level measuring meter, belonging to the accessory field of the vacuum tower bottom liquid level measuring meter. The anti-block structure comprises two differential pressure transmitters installed on the vacuum tower in sequence. The technical point is that back-flushing steam pipes are arranged in series among the pipes at the rear parts of the two differential pressure transmitters. The middle parts of the back-flushing steam pipes are communicated with steam pipes in the T shape; restriction orifices with restriction orifices are arranged among the back-flushing steam pipes and the steam pipes. After the improvement to the prior art, the anti-block structure has the advantages of simple and compact structure and being capable of replacing steam for heat tracing and enhancing the fluidity of the fluid in the pipes and ensuring the accuracy of the liquid level measuring.
Description
Technical field
The utility model belongs to VACUUM TOWER BOTTOM fluid level measuring gauge field of accessories, specifically is the anti-blocking structure of a kind of VACUUM TOWER BOTTOM fluid level measuring gauge.
Background technology
Atmospheric and vacuum distillation unit VACUUM TOWER BOTTOM level gauging generally adopts Floating Ball Liquid Level instrumentation liquid level and differential pressure type surveying instrument to survey liquid level, it is one of method that subtracts level gauging at the bottom of the tower that differential pressure type is surveyed liquid level, promptly subtract each other, draw liquid level according to pressure computing formula Δ P=ρ gh by gaging pressure respectively.(what differential pressure adopted herein is to measure two pressure guiding pipes with two differential pressure transmitters, and the pressure of survey subtracts each other, and promptly draws pressure reduction).But because this place medium is vacuum residuum, flowability is relatively poor, enters behind the pressure guiding pipe in the tube wall condensation, causes the pilot ability to weaken, and liquid level lags in response, insensitive brings constant to technological operation.In order to keep pressure guiding pipe that higher temperature is arranged, often adopting increases steam tracing outside pipeline, beats flushing wet goods means, with the flowability of reinforced pipe inner fluid, guarantee the accuracy of level gauging, but effect is bad in the application process of reality.
The utility model content
The purpose of this utility model is to solve above-mentioned deficiency of the prior art, prior art is improved, provided a kind of simple and compact for structure, can substitute steam tracing, and flowability that can the reinforced pipe inner fluid is guaranteed the anti-blocking structure of VACUUM TOWER BOTTOM fluid level measuring gauge of level gauging accuracy.
For achieving the above object, the utility model is achieved through the following technical solutions:
It is the anti-blocking structure of a kind of VACUUM TOWER BOTTOM fluid level measuring gauge, comprise the two differential pressure type pressure units that are installed in successively on the vacuum distillation tower, the present technique main points are to be arranged in parallel the blowback steam pipe between the pipeline at two differential pressure type pressure unit rear portions, this blowback steam pipe middle part is T font UNICOM steam pipe, is provided with the restriction orifice of metering hole between blowback steam pipe and steam pipe.
In order to limit the flow of steam, guarantee the operate as normal of original equipment, the current limliting aperture on the restriction orifice is 0.7～1.5 millimeter.
In addition, for the ease of the switching of steam regulation, by-pass valve control is set on the steam pipe.
For guaranteeing that pressure guiding pipe keeps pressure-fired, make mink cell focus can not enter pressure guiding pipe, the end of two differential pressure type pressure unit pipelines is an open design, and the condensate drain valve is installed.
After the utility model improves prior art, blow to two pressure points respectively owing between two differential pressure type pressure units, increase by two cover steam blowbacks, make pressure guiding pipe keep pressure-fired, mink cell focus can not enter pressure guiding pipe, steam slowly flowing in pressure guiding pipe, make pressure guiding pipe keep unimpeded, each differential pressure type pressure unit pipeline has increased by one road condensate drain emptying simultaneously, just can not make when equipment comes into operation like this that condensate water enters in the tower in the steam, cause fluctuation and technology accident (because condensate water is met high temperature vaporization rapidly).Therefore have simple and compact for structurely, can substitute steam tracing, and flowability that can the reinforced pipe inner fluid, guarantee the advantage of level gauging accuracy.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1: the utility model example structure synoptic diagram.
Embodiment
As shown in Figure 1, the anti-blocking structure of this VACUUM TOWER BOTTOM fluid level measuring gauge, comprise the two differential pressure type pressure units 1,7 that are installed in successively on the vacuum distillation tower, the present technique main points are to be arranged in parallel blowback steam pipe 3,9 between the pipeline at two differential pressure type pressure units, 1,7 rear portions, these blowback steam pipe 3,9 middle parts are T font UNICOM steam pipe 5, are provided with the restriction orifice 4,8 of metering hole between blowback steam pipe 3,9 and steam pipe 5.
In order to limit the flow of steam, guarantee the operate as normal of original equipment, the current limliting aperture on the restriction orifice 4,8 is 0.7～1.5 millimeter.
In addition, for the ease of the switching of steam regulation, by-pass valve control 6 is set on the steam pipe.
For guaranteeing that pressure guiding pipe keeps pressure-fired, make mink cell focus can not enter pressure guiding pipe, the end of two differential pressure type pressure unit pipelines is an open design, and the condensate drain valve is installed.
Before equipment comes into operation, carry out condensate drain by condensate drain valve 2,10 earlier, close condensate drain valve 2,10 then.In the equipment work process, high-temperature steam in the steam pipe 5 by 3,9 blowbacks of blowback steam pipe in the pipeline of two differential pressure type pressure units, high-temperature steam purges always and can make residual oil advance pressure guiding pipe less than two differential pressure type pressure units, because the vapor stream flux is big, the tube wall of pipeline just can keep higher temperature, and near from valve because of measurement point, steam just spreads then rapidly once valve, can not cause the back pressure influence, so measured value is stable, accurate to differential pressure type pressure unit 1,7.
After the utility model improves prior art, owing between two differential pressure type pressure transmitters, increase by two cover steam blowbacks Blow to respectively two pressure points, make the impulse pipe keep pressure-fired, mink cell focus can not enter the impulse pipe, steam delaying in the impulse pipe Slow flow makes the impulse pipe keep unimpeded, and each differential pressure type pressure transmitter pipeline has increased by one road condensate drain emptying simultaneously, exists like this Just can not make when equipment comes into operation that condensed water enters in the tower in the steam, cause fluctuation and technology accident (high because condensed water is met Temperature is vaporization rapidly). Therefore have simple and compact for structurely, can substitute steam tracing, and flowability that can the reinforced pipe inner fluid, Guarantee the advantage of liquid level measurement accuracy.
Claims (4)
1. anti-blocking structure of VACUUM TOWER BOTTOM fluid level measuring gauge, comprise the two differential pressure type pressure units that are installed in successively on the vacuum distillation tower, it is characterized in that being arranged in parallel the blowback steam pipe between the pipeline at two differential pressure type pressure unit rear portions, this blowback steam pipe middle part is T font UNICOM steam pipe, is provided with the restriction orifice of metering hole between blowback steam pipe and steam pipe.
2. the anti-blocking structure of VACUUM TOWER BOTTOM fluid level measuring gauge according to claim 1 is characterized in that the current limliting aperture on the restriction orifice is 0.7～1.5 millimeter.
3. the anti-blocking structure of VACUUM TOWER BOTTOM fluid level measuring gauge according to claim 1 is characterized in that being provided with on the steam pipe by-pass valve control.
4. the anti-blocking structure of VACUUM TOWER BOTTOM fluid level measuring gauge according to claim 1, the end that it is characterized in that two differential pressure type pressure unit pipelines is an open design, and the condensate drain valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200216538U CN201199168Y (en) | 2008-04-30 | 2008-04-30 | Block-resistant structure for liquid level meter on decompression tower bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200216538U CN201199168Y (en) | 2008-04-30 | 2008-04-30 | Block-resistant structure for liquid level meter on decompression tower bottom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201199168Y true CN201199168Y (en) | 2009-02-25 |
Family
ID=40450323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200216538U Expired - Fee Related CN201199168Y (en) | 2008-04-30 | 2008-04-30 | Block-resistant structure for liquid level meter on decompression tower bottom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201199168Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081952A (en) * | 2019-05-24 | 2019-08-02 | 宝泰隆新材料股份有限公司 | A kind of coal tar distillation VACUUM TOWER BOTTOM liquid level emasuring device |
| CN111366214A (en) * | 2020-04-24 | 2020-07-03 | 河南神马尼龙化工有限责任公司 | Device for measuring liquid level of catalyst suspension aqueous solution |
-
2008
- 2008-04-30 CN CNU2008200216538U patent/CN201199168Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081952A (en) * | 2019-05-24 | 2019-08-02 | 宝泰隆新材料股份有限公司 | A kind of coal tar distillation VACUUM TOWER BOTTOM liquid level emasuring device |
| CN111366214A (en) * | 2020-04-24 | 2020-07-03 | 河南神马尼龙化工有限责任公司 | Device for measuring liquid level of catalyst suspension aqueous solution |
| CN111366214B (en) * | 2020-04-24 | 2021-06-15 | 河南神马尼龙化工有限责任公司 | Device for measuring liquid level of catalyst suspension aqueous solution |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 |