CN214309006U - Device suitable for MTO level internal methanol taking liquid level stable measurement - Google Patents
Device suitable for MTO level internal methanol taking liquid level stable measurement Download PDFInfo
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- CN214309006U CN214309006U CN202120521555.6U CN202120521555U CN214309006U CN 214309006 U CN214309006 U CN 214309006U CN 202120521555 U CN202120521555 U CN 202120521555U CN 214309006 U CN214309006 U CN 214309006U
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Abstract
The utility model relates to a liquid level measurement instrument technical field, in particular to get methyl alcohol liquid level stability measurement's device in being applicable to MTO level, include: including the methanol buffer tank, still include the pipeline I of being connected with methanol buffer tank top, with the pipeline II of methanol buffer tank bottom, the last entry and the pipeline I of balance container deviate from the one end of methanol buffer tank and be connected, the entry is connected with the one end that pipeline II deviates from the methanol buffer tank down, and two flange differential pressure transmitter's malleation flange diaphragm capsule and the high pressure port flange joint on the balance container, negative pressure flange diaphragm capsule and low pressure port flange joint. The utility model discloses a set up the balance vessel, use double flange differential pressure transmitter to directly get the pressure from the high-pressure port flange and the low pressure port flange department of balance vessel, avoided longer getting the problem that the pipeline blockked up easily, set up the washing water ring in high-pressure port flange and low pressure port flange department, prevent that the medium from gathering in the pipeline, further avoided the pipeline to block up, it is more accurate to the level measurement of methyl alcohol buffer tank.
Description
Technical Field
The utility model relates to a liquid level measurement instrument technical field, in particular to get methyl alcohol liquid level stability measurement's device in being applicable to MTO level.
Background
The measurement of getting the liquid level of methyl alcohol in the methyl alcohol jar in the MTO level often adopts differential pressure type pressure pipe to measure, because differential pressure type pressure pipe is slim and long type, when the methyl alcohol jar begins to throw material production, equipment operation does not reach the optimum, the medium of introducing has impurity, impure, or methyl alcohol easy crystallization when external environment temperature is lower, lead to the pressure pipe to block up, thereby lead to the instrument to show unusually, measure inaccurately, consequently, need a device that is applicable to getting methyl alcohol liquid level stable measurement in the MTO level to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the problem that exists among the above-mentioned prior art, provide a device that is applicable to and gets methyl alcohol liquid level stability measurement in the MTO level.
The technical scheme of the utility model is that:
the method comprises the following steps:
including the methyl alcohol buffer tank of horizontal setting, still include:
the pipeline I is connected to the top of the methanol buffer tank;
the pipeline II is connected to the bottom of the methanol buffer tank;
the upper inlet of the double-chamber balance container is connected with one end of the pipeline I, which is far away from the methanol buffer tank, and the lower inlet of the double-chamber balance container is connected with one end of the pipeline II, which is far away from the methanol buffer tank;
a positive pressure flange diaphragm capsule of the double-flange differential pressure transmitter is connected with a high pressure port flange on a balance container, and a negative pressure flange diaphragm capsule is connected with a low pressure port flange on the balance container.
The device also comprises two flushing water rings, wherein one of the two flushing water rings is arranged between the positive pressure flange diaphragm capsule and the high pressure port flange in a butt-clamp manner, the other one of the two flushing water rings is arranged between the negative pressure flange diaphragm capsule and the low pressure port flange in a butt-clamp manner, and the circumferential bottom of the flushing water ring is connected with a sewage discharge pipe.
The device also comprises a DCS control system 8 which is in signal connection with the double-flange differential pressure transmitter 7 and used for calculating the liquid level value in the methanol buffer tank 1 according to the differential pressure value of the double-flange differential pressure transmitter 7.
Wherein, still include root valve, set up on pipeline I and pipeline II.
Wherein, the lower extreme of balance container is connected with pipeline III for discharge balance container's interior liquid, is provided with the valve on the pipeline III.
Compared with the prior art, the utility model provides a pair of get methyl alcohol liquid level stability measurement's device in being applicable to MTO level, its beneficial effect is:
1. the utility model discloses a set up balanced container, use double flange differential pressure transmitter to directly get the pressure from balanced container's high-pressure port flange and low-pressure port flange department, avoided the easy problem of blockking up of longer pressure line of getting.
2. The utility model discloses a high-pressure port flange and low-pressure port flange department at balanced container set up the washing water ring, prevent that the medium from getting pressure port flange department gathering, have further avoided the pipeline to block up, and is more accurate to the level measurement in the methyl alcohol buffer tank.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1. a methanol buffer tank; 2. a pipeline I; 3. a pipe II; 4. a balancing container; 4-1, an upper inlet; 4-2, a lower inlet; 4-3, a low pressure port flange; 4-4, a high-pressure port flange; 5. flushing a water ring; 6. a flange bellows; 6-1, negative pressure flange diaphragm capsule; 6-2, positive pressure flange diaphragm capsule; 7. a double-flange differential pressure transmitter; 8. a DCS control system; 9. a blow-off pipe; 10. a conduit III; 11. a valve; 12. and a pipeline II.
Detailed Description
An embodiment of the present invention will be described in detail with reference to fig. 1, but it should be understood that the scope of the present invention is not limited by the embodiment.
As shown in figure 1, the utility model provides a device suitable for MTO level internal methanol liquid level stability measurement, including the methanol buffer tank 1 that the level set up, still include pipeline I2 of connection at methanol buffer tank 1 top, connect pipeline II12 in methanol buffer tank 1 bottom, balance container 4 is double-chamber balance container, its upper entry 4-1 is connected with the one end that pipeline I2 deviates from methanol buffer tank 1, lower entry 4-2 is connected with the one end that pipeline II12 deviates from methanol buffer tank 1, balance container 4 is provided with and gets the pressure port flange, wherein high pressure port flange 4-4 sets up at same water flat line with lower entry 4-2, low pressure port flange 4-3 sets up at same water flat line with upper entry 4-1, the positive pressure flange diaphragm capsule 6-2 of double-flange differential pressure transmitter 7 is connected with high pressure port flange 4-4, the negative pressure flange bellows 6-1 is connected with the low pressure port flange 4-3.
Preferably, the device also comprises two flushing water rings 5, wherein one flushing water ring 5 is clamped between a positive pressure flange diaphragm box 6-2 and a high pressure port flange 4-4, the positive pressure flange diaphragm box 6-2 is connected with the high pressure port flange 4-4 by using bolts, the flushing water ring is clamped tightly, the other flushing water ring 5 is installed between a negative pressure flange diaphragm box 6-1 and a low pressure port flange 4-3 in an opposite clamping manner, a drain pipe 9 is connected to the circumferential bottom of the flushing water ring 5, when the device operates normally, the drain valve is closed, when the device is cleaned regularly, the drain valve is opened, a measuring medium enters the flushing water ring 5 and the flange diaphragm box 6 from a pressure taking port of the balance container 4 in sequence to flush, and impurities are discharged.
Preferably, the system also comprises a DCS control system 8 which is in signal connection with the double-flange differential pressure transmitter 7 and is used for calculating the liquid level value in the methanol buffer tank 1 according to the differential pressure value of the double-flange differential pressure transmitter 7.
Preferably, the root valve 3 is arranged on the pipeline I2 and the pipeline II12, and the measuring device is convenient to detach when in maintenance.
Preferably, a pipe III10 is connected to the lower end of the equalizing vessel 4 for discharging the liquid in the equalizing vessel 4 and cleaning the equalizing vessel 4 periodically, and a valve 11 is provided on the pipe III 10.
Preferably, dual flange differential pressure transmitter 7 is selected as model LT 1101A/B.
Principle of operation
The utility model discloses during the use, the leading-in malleation flange diaphragm capsule 6-2 of pressure port flange is got from the high pressure to pressure medium among the methanol buffer tank 1 in getting into balance vessel 4 to the pressure of measuring, gas medium gets into and gets leading-in negative pressure flange diaphragm capsule 6-1 of pressure port flange from the low pressure after condensing into liquid among balance vessel 4, two flange differential pressure transmitter 7 surveys differential pressure value, this differential pressure value signal transmission is to the DCS control system in, the DCS control system is according to the relation H of differential pressure and liquid level ═ DeltaP/rho g (wherein H is required measuring liquid level height promptly, DeltaP is the differential pressure value that two flange differential pressure transmitter 7 surveyed, rho is the density of concrete measured medium, g is acceleration of gravity, generally get 9.8m/s2) And calculating to obtain the liquid level value.
To sum up, compared with the prior art, the utility model discloses a device suitable for get methyl alcohol liquid level stability measurement in MTO level, through setting up balanced container, use two flange differential pressure transmitter to get from balanced container two and press mouthful flange department and directly get the pressure, avoided longer getting the easy problem of blockking up of pressure line, set up the washing water ring through getting at balanced container and pressing mouthful flange department, prevent that the medium from getting pressure mouthful flange department gathering, further avoided the pipeline to block up, more accurate to the level measurement of methyl alcohol buffer tank, the utility model discloses simple structure, the practicality is strong, is worth promoting.
The above disclosure is only one specific embodiment of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art should fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a device suitable for get stable measurement of methyl alcohol liquid level in MTO level, includes methyl alcohol buffer tank (1) that the level set up, its characterized in that still includes:
the pipeline I (2) is connected to the top of the methanol buffer tank (1);
the pipeline II (12) is connected to the bottom of the methanol buffer tank (1);
the balance container (4) is a double-chamber balance container, an upper inlet (4-1) of the balance container is connected with one end of the pipeline I (2) departing from the methanol buffer tank (1), and a lower inlet (4-2) of the balance container is connected with one end of the pipeline II (12) departing from the methanol buffer tank (1);
and a double-flange differential pressure transmitter (7), wherein a positive pressure flange diaphragm capsule (6-2) is connected with a high pressure port flange (4-4) on the balance container (4), and a negative pressure flange diaphragm capsule (6-1) is connected with a low pressure port flange (4-3) on the balance container.
2. The device suitable for MTO-grade internal methanol extraction liquid level stability measurement is characterized by further comprising two flushing water rings (5), wherein one of the flushing water rings is installed between the positive pressure flange bellows (6-2) and the high pressure port flange (4-4) in a butt-clamping mode, the other flushing water ring is installed between the negative pressure flange bellows (6-1) and the low pressure port flange (4-3) in a butt-clamping mode, and a drain pipe (9) is connected to the circumferential bottom of the flushing water ring (5).
3. The device for taking stable measurement of methanol liquid level in MTO grade according to claim 1, further comprising a DCS control system (8) in signal connection with the double-flange differential pressure transmitter (7) for calculating the liquid level value in the methanol buffer tank (1) according to the differential pressure value of the double-flange differential pressure transmitter (7).
4. The apparatus for the stable measurement of methanol level in MTO stage according to claim 1, further comprising a root valve (3) disposed on the pipe I (2) and the pipe II (12).
5. The device for the stable measurement of the methanol liquid level in the MTO grade is characterized in that the lower end of the balance container (4) is connected with a pipeline III (10) for discharging the liquid in the balance container (4), and a valve (11) is arranged on the pipeline III (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521555.6U CN214309006U (en) | 2021-03-12 | 2021-03-12 | Device suitable for MTO level internal methanol taking liquid level stable measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120521555.6U CN214309006U (en) | 2021-03-12 | 2021-03-12 | Device suitable for MTO level internal methanol taking liquid level stable measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214309006U true CN214309006U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120521555.6U Active CN214309006U (en) | 2021-03-12 | 2021-03-12 | Device suitable for MTO level internal methanol taking liquid level stable measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214309006U (en) |
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2021
- 2021-03-12 CN CN202120521555.6U patent/CN214309006U/en active Active
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