CN221124193U - Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system - Google Patents
Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system Download PDFInfo
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- CN221124193U CN221124193U CN202322605803.7U CN202322605803U CN221124193U CN 221124193 U CN221124193 U CN 221124193U CN 202322605803 U CN202322605803 U CN 202322605803U CN 221124193 U CN221124193 U CN 221124193U
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- 239000002002 slurry Substances 0.000 title claims abstract description 106
- 238000005259 measurement Methods 0.000 title claims abstract description 38
- 239000010440 gypsum Substances 0.000 title claims abstract description 25
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000011010 flushing procedure Methods 0.000 claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 238000006477 desulfuration reaction Methods 0.000 abstract description 10
- 230000023556 desulfurization Effects 0.000 abstract description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003546 flue gas Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001739 density measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model discloses an anti-interference direct-contact-free limestone-gypsum slurry density differential pressure method measurement system, and relates to the technical field of limestone-gypsum flue gas desulfurization. The device comprises an absorption tower, a measurement buffer cylinder and a flushing water pipeline, wherein a stirrer is arranged in a slurry pool, the measurement buffer cylinder is connected with the upper part of the designed liquid level of the slurry pool of the absorption tower, and the slurry pool is connected with the bottom of the measurement buffer cylinder; the flushing water pipeline is connected with the measuring buffer cylinder, and the flushing water pipeline is connected with the measuring buffer cylinder; one end of the differential pressure transmitter is connected with the first pressure measuring pipe, and the other end is connected with the second pressure measuring pipe. According to the utility model, the slurry to be measured is led out from the slurry tank of the absorption tower to the expansion cavity type measuring buffer cylinder, so that disturbance of the stirrer and oxidation air in the slurry tank to the slurry is avoided, the stability of a density measuring environment is ensured, and the measuring precision of the differential pressure type densimeter is effectively improved.
Description
Technical Field
The utility model relates to the technical field of limestone-gypsum flue gas desulfurization, in particular to an anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measuring system.
Background
The limestone-gypsum wet desulfurization technology at the present stage is widely applied to flue gas desulfurization of large-scale thermal power plants; in the whole wet desulfurization process system, accurate measurement of medium parameters is a precondition of stable and reliable operation of the desulfurization system; the density of limestone-gypsum slurry is an important parameter for the operation of the absorption tower, is generally controlled to 1080-1150kg/m 3, and is high in density, so that the desulfurization system is easy to scale, block, wear and the like, and the low density of the slurry can cause the desulfurization efficiency to be substandard, the quality of gypsum to be poor and the like; the slurry density is reasonably controlled, the limestone powder consumption can be effectively reduced, the power consumption is reduced, and the desulfurization efficiency is improved.
At present, the domestic desulfurization system slurry density measurement mainly comprises a coriolis force mass flow method, a gamma-ray radiation absorption measurement method, a differential pressure method and the like; in the coriolis force mass flow method, the mass flowmeter has high flow rate requirements, but the actual site has unstable performance, poor reliability, serious abrasion of a measuring pipeline, frequent replacement of spare parts and extremely high maintenance cost due to high flow rate and extremely high abrasion;
The differential pressure method utilizes two pressure transmitters or one differential pressure transmitter to measure differential pressure to convert slurry density, the measurement is simple, the investment cost is low, but the measurement value of the pressure sensor is easily affected by environment, and the measurement error is generally large for a stirred slurry tank or slurry pool; in order to reduce the influence of slurry fluctuation, partial projects adopt a differential pressure type measurement scheme for leading the slurry out of an absorption tower/slurry tank, and because limestone slurry has the characteristics of corrosion and easy precipitation and scaling, the pressure sensor in direct contact with the slurry still has the problems of quicker abrasion, easy blockage of a sampling pipeline and the like, and the long-term stable and accurate measurement effect of the slurry density is difficult to effectively realize.
Therefore, there is a need for an anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system.
Disclosure of utility model
The utility model aims to overcome the defects of the background technology and provide an anti-interference direct contact-free limestone-gypsum slurry density differential pressure measuring system.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system, including the absorption tower that the bottom is the slurry pond, be provided with agitator, its characterized in that in the slurry pond: the device comprises an absorption tower, a slurry tank, a slurry circulating pump, a slurry supply pipeline, a slurry tank, a first valve, a second valve, a slurry supply pipeline and a flushing pipeline, wherein the side surface of the bottom of the measurement buffer cylinder is connected with the upper part of the designed liquid level of the slurry tank of the absorption tower through the first valve and the discharge pipeline in sequence;
the flushing water pipeline is connected with the measuring buffer cylinder through a third valve and the first pressure measuring pipe in sequence, and is connected with the measuring buffer cylinder through a fourth valve and the second pressure measuring pipe in sequence; the joint of the first piezometer tube and the measuring buffer tube is positioned above the joint of the second piezometer tube and the measuring buffer tube;
one end of the differential pressure transmitter is connected with the first pressure measuring pipe, and the other end is connected with the second pressure measuring pipe.
In the technical scheme, the measuring buffer cylinder is positioned above the designed liquid level of the slurry pool.
In the technical scheme, the top of the measuring buffer cylinder is provided with an emptying/overflow pipeline, and the emptying/overflow pipeline is connected with a discharge pipeline.
In the above technical scheme, first piezometer tube includes the vertical section of first piezometer tube and first piezometer tube slope section, the second piezometer tube includes the vertical section of second piezometer tube and the inclined section of second piezometer tube, the vertical section of first piezometer tube one end is connected with wash water pipeline connection, the other end is connected with the inclined section of first piezometer tube, the vertical section of second piezometer tube one end is connected with wash water pipeline connection, the other end is connected with the inclined section of second piezometer tube, differential pressure transmitter one end is connected with the vertical section of first piezometer tube, the other end is connected with the vertical section of second piezometer tube, the inclined section of first piezometer tube and the inclined section of second piezometer tube all downward sloping be connected with the measurement buffer section, first piezometer tube slope section is located the inclined section of second piezometer tube top.
In the above technical scheme, the slurry supply pipeline comprises a first horizontal section and a vertical section, wherein the first horizontal section is connected with the second valve, one end of the vertical section is connected with the bottom of the measuring buffer cylinder, and the other end of the vertical section is connected with the first horizontal section and then connected with the trench through the fifth valve.
In the above technical scheme, the slurry supply pipeline further comprises a second horizontal section, one end of the second horizontal section is connected with the first horizontal section, and the other end of the second horizontal section is connected with the flushing water pipeline through a sixth valve.
In the technical scheme, the slurry circulating pump is connected with the absorption tower through a circulating pipeline.
Compared with the prior art, the utility model has the following advantages:
1) According to the utility model, the slurry to be measured is led out from the slurry tank of the absorption tower to the expansion cavity type measuring buffer cylinder, so that disturbance of the stirrer and oxidation air in the slurry tank to the slurry is avoided, the stability of a density measuring environment is ensured, and the measuring precision of the differential pressure type densimeter is effectively improved.
2) The vertical sections of the first pressure measuring pipe and the second pressure measuring pipe at the two ends of the differential pressure transmitter are always filled with flushing water, so that the differential pressure transmitter is ensured not to be in direct contact with limestone-gypsum slurry to be measured, corrosion, blockage and the like of the slurry to a pressure sensing device of the transmitter are avoided, the service life is prolonged, the replacement workload and cost are reduced, and the long-term stable and reliable performance of density measurement is ensured.
3) The measuring buffer cylinder is arranged above the highest design liquid level of the slurry pool of the absorption tower, and the bottom of the measuring buffer cylinder is provided with the discharge pipeline which can flow back to the slurry pool by means of dead weight, so that waste caused by direct discharge of slurry or flushing water in the measuring buffer cylinder is avoided; the top of the measuring buffer cylinder is provided with an emptying/overflow pipeline which is connected to a discharge pipeline, when slurry or flushing water is filled into the measuring buffer cylinder in the density measuring process, the gas carried in the liquid is released and discharged, and when the slurry or flushing water of the measuring buffer cylinder is filled, the slurry overflows from the top to a slurry pool of the absorption tower, so that the system safety is improved.
4) According to the utility model, the vertical section of the slurry supply pipeline at the bottom of the measuring buffer cylinder is as short as possible, a small amount of flushing water is accumulated in the vertical section after flushing is finished, and the dilution of accumulated water to slurry in the measuring buffer cylinder can be reduced when slurry is supplied for the next measurement; if the vertical section at the bottom of the measuring buffer cylinder is too high due to the limitation of the field condition, a fifth valve is arranged at the lowest point of the vertical section, so that the accumulated water in the vertical section is emptied after the flushing is finished, and the measuring accuracy is ensured.
5) According to the utility model, the first pressure measuring tube inclined section and the second pressure measuring tube inclined section are downwards inclined, the height difference of the outlets of the first pressure measuring tube inclined section and the second pressure measuring tube inclined section is H, so that air cannot be accumulated in the first pressure measuring tube inclined section and the second pressure measuring tube inclined section when the buffer tube is filled with slurry, and the measurement accuracy is ensured.
6) After the measurement is completed, the first valve is opened, and the slurry to be measured in the measurement buffer cylinder is emptied; closing the first valve, opening the third valve and the fourth valve, and cleaning the system; after the buffer cylinder to be measured is filled with flushing water, the third valve and the fourth valve are closed, the first valve is opened, and flushing water in the buffer cylinder to be measured is emptied; according to the actual situation, a fifth valve can be opened, water accumulated in the vertical section of the slurry supply pipeline at the bottom of the measurement buffer cylinder is emptied, and then the fifth valve is closed; the function of cleaning the pipeline is realized, the problems that the pipeline is easy to block and the like are solved, and the effect of long-term stable and accurate measurement of the slurry density is realized.
7) The utility model adopts the differential pressure transmitter to convert slurry density, and has low investment cost compared with mass flow densimeter, ultrasonic densimeter and other devices. The system configuration is simple, the system automation degree is high, the fault rate is low, and the maintenance workload and the cost are effectively reduced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
The device comprises a 1-absorption tower, a 11-slurry tank, a 111-slurry circulating pump, a 12-stirrer, a 2-measuring buffer cylinder, a 3-flushing water pipeline, a 31-first valve, a 32-second valve, a 33-third valve, a 34-fourth valve, a 35-fifth valve, a 36-sixth valve, a 41-discharging pipeline, a 42-slurry supplying pipeline, a 421-first horizontal section, a 422-vertical section, a 423-second horizontal section, a 43-first pressure measuring pipe, a 431-first pressure measuring pipe vertical section, a 432-first pressure measuring pipe inclined section, a 44-second pressure measuring pipe, a 441-second pressure measuring pipe vertical section, a 442-second pressure measuring pipe inclined section, a 45-emptying/overflow pipeline, a 46-circulating pipeline, a 5-differential pressure transmitter and a 6-trench.
Detailed Description
The following detailed description of the utility model is, therefore, not to be taken in a limiting sense, but is made merely by way of example. While the advantages of the utility model will become apparent and readily appreciated by reference to the following description.
As can be seen with reference to the accompanying drawings: anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system, including the absorption tower 1 that the bottom is slurry pond 11, be provided with agitator 12 in the slurry pond 11, its characterized in that: the device also comprises a measuring buffer cylinder 2 and a flushing water pipeline 3, wherein the side surface of the bottom of the measuring buffer cylinder 2 is connected with the upper part of the designed liquid level of the slurry tank 11 of the absorption tower 1 through a first valve 31 and a discharge pipeline 41 in sequence, and the slurry tank 11 is connected with the bottom of the measuring buffer cylinder 2 through a slurry circulating pump 111, a second valve 32 and a slurry supply pipeline 42 in sequence; the slurry is sent into the measuring buffer cylinder 2 by the slurry circulating pump 111;
The flushing water pipeline 3 is connected with the measuring buffer cylinder 2 through a third valve 33 and a first pressure measuring pipe 43 in sequence, and the flushing water pipeline 3 is connected with the measuring buffer cylinder 2 through a fourth valve 34 and a second pressure measuring pipe 44 in sequence; the connection part of the first piezometer tube 43 and the measurement buffer tube 2 is positioned above the connection part of the second piezometer tube 44 and the measurement buffer tube 2;
one end of differential pressure transmitter 5 is connected to first pressure measuring pipe 43, and the other end is connected to second pressure measuring pipe 44.
The measuring buffer cartridge 2 is located above the designed level of the slurry tank 11.
The top of the measuring buffer cartridge 2 is provided with an evacuation/overflow pipe 45, which evacuation/overflow pipe 45 is connected to the drain pipe 41.
The first piezometer tube 43 comprises a first piezometer tube vertical section 431 and a first piezometer tube inclined section 432, the second piezometer tube 44 comprises a second piezometer tube vertical section 441 and a second piezometer tube inclined section 442, one end of the first piezometer tube vertical section 431 is connected with the flushing water pipeline 3, the other end of the first piezometer tube vertical section 432 is connected with the first piezometer tube inclined section 432, one end of the second piezometer tube vertical section 441 is connected with the flushing water pipeline 3, the other end of the second piezometer tube vertical section 441 is connected with the second piezometer tube inclined section 442, one end of the differential pressure transmitter 5 is connected with the first piezometer tube vertical section 431, the other end of the differential pressure transmitter 5 is connected with the second piezometer tube vertical section 441, the first piezometer tube inclined section 432 and the second piezometer tube inclined section 442 are both inclined downwards and are connected with the measuring buffer tube 2, and the first piezometer tube inclined section 432 is positioned above the second piezometer tube inclined section 442.
The slurry supply pipeline 42 comprises a first horizontal section 421 and a vertical section 422, the first horizontal section 421 is connected with the second valve 32, one end of the vertical section 422 is connected with the bottom of the measurement buffer drum 2, and the other end of the vertical section 422 is connected with the first horizontal section 421 and then connected with the trench 6 through the fifth valve 35.
The slurry supply pipe 42 further includes a second horizontal section 423, and one end of the second horizontal section 423 is connected to the first horizontal section 421, and the other end is connected to the flushing water pipe 3 through the sixth valve 36.
The slurry circulation pump 111 is connected to the absorption column 1 through a circulation pipe 46.
The application method of the utility model comprises the following steps:
Step 1: before starting, checking that the first valve 31, the second valve 32, the third valve 33, the fourth valve 34, the fifth valve 35 and the sixth valve 36 are in a closed state;
Step 2: when the valve is started, the third valve 33 and the fourth valve 34 are opened; filling the measurement buffer cylinder 2 with flushing water, closing the third valve 33 and the fourth valve 34 after the measurement buffer cylinder 2 is filled with the flushing water, opening the first valve 31, and emptying the flushing water in the measurement buffer cylinder 2; at this time, the first pressure measuring tube vertical section 431 and the second pressure measuring tube vertical section 441 at both sides of the differential pressure transmitter 5 are filled with flushing water, and the differential pressure transmitter 5 measures the differential pressure Δp 1 as follows: Δp 1＝P2-P1＝ρ Water and its preparation method gH, where P 1 is the pressure at the end of the time-difference pressure transmitter 5 near the second pressure-measuring tube vertical section 441, P 2 is the pressure at the end of the time-difference pressure transmitter 5 near the first pressure-measuring tube vertical section 431, ρ Water and its preparation method is the density of water, g is the gravitational acceleration, and H is the difference in height between the first pressure-measuring tube inclined section 432 and the second pressure-measuring tube inclined section 442;
Step 3: closing the first valve 31, opening the second valve 32, filling the limestone-gypsum slurry into the measuring buffer cylinder 2, and closing the second valve 32 after the measuring buffer cylinder 2 is filled with the limestone-gypsum slurry; at this time, differential pressure transmitter 5 measures differential pressure Δp 2 as: Δp 2＝P'2-P'1＝ρ Slurry liquid gH, where P '1 is the pressure at the end of the pressure transmitter 5 near the second pressure tube vertical section 441 and P' 2 is the pressure at the end of the pressure transmitter 5 near the first pressure tube vertical section 431, ρ slurry is the density of the limestone-gypsum slurry;
step 4: the differential pressure change delta P is measured according to the differential pressure transmitter 5 of the front and the back times, and the differential pressure is obtained by the following steps: Δp=Δp 2-ΔP1＝(ρ Slurry liquid -ρ Water and its preparation method ) gH, where H takes 1m, converting the slurry density:
ρ Slurry liquid ＝ρ Water and its preparation method +ΔP/g
The water density is 1000kg/m3, g is 9.8N/kg, and ρ Slurry liquid =1000+ΔP/9.8kg/m3;
Step 5: after the measurement is completed, the first valve 31 is opened, and the slurry to be measured in the measurement buffer cylinder 2 is emptied; closing the first valve 31, opening the third valve 33 and the fourth valve 34, and cleaning the system; after the measuring buffer tube 2 is filled with flushing water, the third valve 33 and the fourth valve 34 are closed, the first valve 31 is opened, and flushing water in the measuring buffer tube 2 is emptied.
Step 6: setting a sampling measurement time interval according to the field measurement requirement, and repeating the steps 2-5 to finish the measurement of the density of the limestone-gypsum slurry;
Step 7: according to the actual situation, the fifth valve 35 can be opened, accumulated water in the vertical section 422 of the slurry supply pipeline at the bottom of the measuring buffer cylinder 2 is emptied, and then the fifth valve 35 is closed.
For realizing the automatic operation of the utility model, the first valve 31, the second valve 32, the third valve 33, the fourth valve 34, the fifth valve 35 and the sixth valve 36 are electric valves or pneumatic valves.
Other non-illustrated parts are known in the art.
Claims (7)
1. Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system, including absorption tower (1) that the bottom is thick liquid pond (11), be provided with agitator (12), its characterized in that in thick liquid pond (11): the device comprises an absorption tower (1), a slurry tank (11), a slurry circulating pump (111), a second valve (32) and a slurry supply pipeline (42), and is characterized by further comprising a measurement buffer cylinder (2) and a flushing water pipeline (3), wherein the side surface of the bottom of the measurement buffer cylinder (2) is connected with the upper part of the designed liquid level of the slurry tank (11) of the absorption tower (1) through a first valve (31) and a discharge pipeline (41) in sequence, and the slurry tank (11) is connected with the bottom of the measurement buffer cylinder (2) through the slurry circulating pump (111), the second valve (32) and the slurry supply pipeline (42) in sequence;
The flushing water pipeline (3) is connected with the measuring buffer cylinder (2) through a third valve (33) and a first pressure measuring pipe (43) in sequence, and the flushing water pipeline (3) is connected with the measuring buffer cylinder (2) through a fourth valve (34) and a second pressure measuring pipe (44) in sequence; the joint of the first pressure measuring tube (43) and the measuring buffer tube (2) is positioned above the joint of the second pressure measuring tube (44) and the measuring buffer tube (2);
One end of the differential pressure transmitter (5) is connected with the first pressure measuring pipe (43), and the other end is connected with the second pressure measuring pipe (44).
2. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 1, wherein: the measuring buffer cylinder (2) is positioned above the designed liquid level of the slurry pond (11).
3. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 2, wherein: an emptying/overflow pipeline (45) is arranged at the top of the measuring buffer cylinder (2), and the emptying/overflow pipeline (45) is connected with a discharge pipeline (41).
4. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 3, wherein: the first pressure measuring tube (43) comprises a first pressure measuring tube vertical section (431) and a first pressure measuring tube inclined section (432), the second pressure measuring tube (44) comprises a second pressure measuring tube vertical section (441) and a second pressure measuring tube inclined section (442), one end of the first pressure measuring tube vertical section (431) is connected with a flushing water pipeline (3), the other end of the first pressure measuring tube vertical section is connected with the first pressure measuring tube inclined section (432), one end of the second pressure measuring tube vertical section (441) is connected with the flushing water pipeline (3), the other end of the second pressure measuring tube vertical section is connected with the second pressure measuring tube inclined section (442), one end of the differential pressure transmitter (5) is connected with the first pressure measuring tube vertical section (431), the other end of the differential pressure transmitter is connected with the second pressure measuring tube vertical section (441), the first pressure measuring tube inclined section (432) and the second pressure measuring tube inclined section (442) are all inclined downwards and are connected with a measuring buffer tube (2), and the first pressure measuring tube inclined section (432) is located above the second pressure measuring tube inclined section (442).
5. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 4, wherein: the slurry supply pipeline (42) comprises a first horizontal section (421) and a vertical section (422), the first horizontal section (421) is connected with the second valve (32), one end of the vertical section (422) is connected with the bottom of the measurement buffer cylinder (2), and the other end of the vertical section is connected with the first horizontal section (421) and then connected with the trench (6) through a fifth valve (35).
6. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 5, wherein: the slurry supply pipeline (42) further comprises a second horizontal section (423), one end of the second horizontal section (423) is connected with the first horizontal section (421), and the other end of the second horizontal section is connected with the flushing water pipeline (3) through a sixth valve (36).
7. The anti-interference direct contact free limestone-gypsum slurry density differential pressure measurement system of claim 6, wherein: the slurry circulating pump (111) is connected with the absorption tower (1) through a circulating pipeline (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605803.7U CN221124193U (en) | 2023-09-25 | 2023-09-25 | Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322605803.7U CN221124193U (en) | 2023-09-25 | 2023-09-25 | Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system |
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| CN221124193U true CN221124193U (en) | 2024-06-11 |
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| CN202322605803.7U Active CN221124193U (en) | 2023-09-25 | 2023-09-25 | Anti-interference direct contact-free limestone-gypsum slurry density differential pressure method measurement system |
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| CN (1) | CN221124193U (en) |
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2023
- 2023-09-25 CN CN202322605803.7U patent/CN221124193U/en active Active
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