CN204085628U - Containing H2S sewage backflow tank liquid level emasuring device - Google Patents
Containing H2S sewage backflow tank liquid level emasuring device Download PDFInfo
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- CN204085628U CN204085628U CN201420459505.XU CN201420459505U CN204085628U CN 204085628 U CN204085628 U CN 204085628U CN 201420459505 U CN201420459505 U CN 201420459505U CN 204085628 U CN204085628 U CN 204085628U
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- liquid level
- negative pressure
- malleation
- pipeline
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Abstract
A kind of containing H
2s sewage backflow tank liquid level emasuring device, the outlet of return tank by the entrance that is arranged on positive pressure cutoff valve on pipeline and malleation nipple be connected, one outlet of malleation nipple is by being arranged on malleation atmospheric valve on pipeline and scavenging line is connected, another outlet of malleation nipple is connected by the positive pressure side of capillary tube with two flange liquid level transmission device, the negative pressure end of two flange liquid level transmission device is connected by the entrance of capillary tube and negative pressure short pipe, one outlet of negative pressure short pipe is by being arranged on negative pressure atmospheric valve on pipeline and the external world is connected, another outlet of negative pressure short pipe is connected by the entrance being arranged on negative-pressure stop valve on pipeline and return tank.The utility model has the advantages such as structure is simple, maintenance is few, easy for installation, easy to adjust, the steady rate of liquid level is high, guide wire not easily blocks, and can be used as containing H
2the liquid level emasuring device of S sewage backflow tank.
Description
Technical field
The utility model belongs to the equipment or device technique field of measuring liquid level, is specifically related to measure containing H
2the level gauge of S sewage backflow tank.
Background technology
At refinery, the primary raw material of diesel oil hydrogenation is the straight-run diesel oil of atmospheric and vacuum distillation unit and the catalytic diesel oil of catalytic cracking unit, and major product is the low-sulfur diesel-oil that sulfur content is less than 50ppm.From the reaction product of hydrofining reactor, a part mixes through the fresh feed of flowrate control valve after heating after the boosting of reaction product ebullator, by saturated liquid recycle stock for reaction provides required hydrogen, this component loops reaction product is simultaneously also for absorbing IsoTherming reactor liberated heat; Another part is after reaction product-feedstock oil heat interchanger heat exchange, and control to enter thermal low-pressure separators through pressure control valve and carry out gas-liquid separation, liquid phase delivers to stripping tower the 3rd layer of column plate; Gas phase with mix from all beds of reactor release gas out after be cooled to 50 DEG C enter cold low separation vessel through discharging gas air cooler, in cold low separation vessel, carry out gas, oil, water three phase separation.Cold low separation vessel sour water goes out device after mixing with isolated sour water in stripping return tank of top of the tower; Low point of pneumatic transmission is to the film separation unit of catalytic cracking unit; Oil phase is back to feedstock oil surge tank.Separate out at low temperature position to prevent the ammonium salt (NH4HS) in reaction effluent, by the ammonium salt that deaerated water note produces to release gas air cooler upstream side with solubilizing reaction, this return tank circle position adopts twin float, one and variable valve formation serials control, and reference is assisted a ruler in governing a country in a conduct, due to easy precipitating sludge, floating drum can be caused stuck, and often instruction deviation and wave phenomenon, first rinse floating drum for this fault, but the retention time is short, result of use is poor.
Summary of the invention
Technical problem to be solved in the utility model is the shortcoming overcoming above-mentioned prior art, provides that the steady rate of a kind of liquid level is high, safe and reliable, easy to use, structure is simply containing H
2s sewage backflow tank liquid level emasuring device.
Solving the problems of the technologies described above adopted technical scheme is: return tank outlet by the entrance that is arranged on positive pressure cutoff valve on pipeline and malleation nipple be connected, one outlet of malleation nipple is by being arranged on malleation atmospheric valve on pipeline and scavenging line is connected, another outlet of malleation nipple is connected by the positive pressure side of capillary tube with two flange liquid level transmission device, the negative pressure end of two flange liquid level transmission device is connected by the entrance of capillary tube and negative pressure short pipe, one outlet of negative pressure short pipe is by being arranged on negative pressure atmospheric valve on pipeline and the external world is connected, another outlet of negative pressure short pipe is connected by the entrance being arranged on negative-pressure stop valve on pipeline and return tank.
Due to two flange liquid level transmission devices that the utility model uses, that capillary tube by filling silicon or other liquid couples together between flange and transmitter, by measuring diaphragm by show body by capillary tube extend to away from table body flange, pressure sensor module in transmitter is directly entered for preventing ducted medium, the change of zero shift or range can be carried out, two adjustment are independent of each other, increase purge line can according to the degree of fouling of actuating medium service condition and inner surface of pipeline, air is adopted to purge or steam blowing, it is simple that the utility model has structure, maintenance is few, easy for installation, easy to adjust, the steady rate of liquid level is high, the advantages such as guide wire not easily blocks, can be used as containing H
2the liquid level emasuring device of S sewage backflow tank.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described, but the utility model is not limited to these embodiments.
Embodiment 1
In FIG, the present embodiment containing H
2s sewage backflow tank liquid level emasuring device is made up of negative-pressure stop valve 1, negative pressure atmospheric valve 2, negative pressure short pipe 3, positive pressure cutoff valve 4, malleation nipple 5, two flange liquid level transmission device 6, malleation atmospheric valve 7, scavenging line 8, return tank 9 connection.
Be connected at the bottom screw threads for fastening connector of return tank 9 and the entrance of positive pressure cutoff valve 4, the entrance of positive pressure cutoff valve 4 outlet flange tight joint part and malleation nipple 5 be connected, positive pressure cutoff valve 4 plays and cuts off or regulate and throttling action.One outlet of malleation nipple 5 is connected with scavenging line 8 by the malleation atmospheric valve 7 be arranged on pipeline, according to the degree of fouling of actuating medium service condition and inner surface of pipeline, air is adopted to purge or steam blowing, also as the gas or the liquid that have pressure in malleation nipple 5 and pipeline thereof, the passage emitted under off working state or the emergency circumstance.Another outlet of malleation nipple 5 is connected with the positive pressure side of two flange liquid level transmission device 6 by the capillary tube being full of silicon or other liquid.The negative pressure end of two flange liquid level transmission device 6 is connected by the entrance of the capillary tube and negative pressure short pipe 3 that are full of silicon or other liquid.One outlet of negative pressure short pipe 3 is connected with the external world by the negative pressure atmospheric valve 2 be arranged on pipeline, by having gas or the liquid of pressure in negative pressure short pipe 3 and pipeline thereof, emits under off working state or the emergency circumstance.Another outlet screw threads for fastening connector of negative pressure short pipe 3 and the entrance of negative-pressure stop valve 1 are connected, and the outlet screw threads for fastening connector of negative-pressure stop valve 1 and the entrance of return tank 9 are connected, and negative-pressure stop valve 1 plays and cuts off or regulate and throttling action.Two flange liquid level transmission device 6 experience the pressure that positive pressure side and negative pressure end send, when the pressure of the positive pressure side of two flange liquid level transmission device 6 is greater than the pressure of negative pressure end, carry out the measurement of liquid level.
Utility model works principle is as follows:
Two pressure interfaces are had according to two flange liquid level transmission device 6, generally be divided into positive pressure side and negative pressure end, measure two flange liquid level transmission device 6 pressure at two ends, export with the form of standard signal, when the pressure of the positive pressure side of two flange liquid level transmission device 6 is greater than the pressure of negative pressure end, carry out level gauging, displacement signal is transformed into 4 ~ 20mA alternating-current pulse electric signal to export, two flange liquid level transmission devices 6 that the utility model uses, that capillary tube by filling silicon or other liquid is connected between flange with transmitter, by measuring diaphragm by show body by capillary tube extend to away from table body flange, for the pressure sensor module preventing ducted medium from directly entering two flange liquid level transmission device 6 li, zero-bit, range two potentiometers can carry out arbitrarily the change of zero shift or range in liquid detecting effective range, two adjustment are independent of each other.
Claims (1)
1. one kind contains H
2s sewage backflow tank liquid level emasuring device, it is characterized in that: the outlet of return tank (9) by the entrance that is arranged on the positive pressure cutoff valve (4) on pipeline and malleation nipple (5) be connected, one outlet of malleation nipple (5) is connected with scavenging line (8) by the malleation atmospheric valve (7) be arranged on pipeline, another outlet of malleation nipple (5) is connected by the positive pressure side of capillary tube with two flange liquid level transmission device (6), the negative pressure end of two flange liquid level transmission device (6) is connected by the entrance of capillary tube and negative pressure short pipe (3), one outlet of negative pressure short pipe (3) is connected with the external world by the negative pressure atmospheric valve (2) be arranged on pipeline, another outlet of negative pressure short pipe (3) is connected with the entrance of return tank (9) by being arranged on the negative-pressure stop valve (1) on pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459505.XU CN204085628U (en) | 2014-08-14 | 2014-08-14 | Containing H2S sewage backflow tank liquid level emasuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420459505.XU CN204085628U (en) | 2014-08-14 | 2014-08-14 | Containing H2S sewage backflow tank liquid level emasuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085628U true CN204085628U (en) | 2015-01-07 |
Family
ID=52178331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420459505.XU Active CN204085628U (en) | 2014-08-14 | 2014-08-14 | Containing H2S sewage backflow tank liquid level emasuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571772A (en) * | 2016-01-12 | 2016-05-11 | 神华集团有限责任公司 | Zero shift method for double flange differential pressure transmitter, and testing device for gas differential pressure |
| CN106151747A (en) * | 2015-04-28 | 2016-11-23 | 宝山钢铁股份有限公司 | The diaphragm type liquid level meter sampling pretreatment device of on-line cleaning |
-
2014
- 2014-08-14 CN CN201420459505.XU patent/CN204085628U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151747A (en) * | 2015-04-28 | 2016-11-23 | 宝山钢铁股份有限公司 | The diaphragm type liquid level meter sampling pretreatment device of on-line cleaning |
| CN105571772A (en) * | 2016-01-12 | 2016-05-11 | 神华集团有限责任公司 | Zero shift method for double flange differential pressure transmitter, and testing device for gas differential pressure |
| CN105571772B (en) * | 2016-01-12 | 2018-07-17 | 神华集团有限责任公司 | The zero shift method of double flanges differential pressure transmitter and the test device of air differential pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |