CN217930454U - Power plant desulfurization absorption tower pit liquid level measurement device - Google Patents
Power plant desulfurization absorption tower pit liquid level measurement device Download PDFInfo
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- CN217930454U CN217930454U CN202221803855.4U CN202221803855U CN217930454U CN 217930454 U CN217930454 U CN 217930454U CN 202221803855 U CN202221803855 U CN 202221803855U CN 217930454 U CN217930454 U CN 217930454U
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Abstract
The utility model belongs to the technical field of the liquid level detection equipment, specific saying relates to a power plant desulfurization absorption tower pit liquid level measurement device. The ultrasonic liquid level meter comprises a pit-side vertical frame and an ultrasonic liquid level meter arranged on an end mounting platform of the pit-side vertical frame, wherein a positioning column is arranged in a pit, an extension pipe capable of sliding mutually with the positioning column is sleeved outside the positioning column, the lower end of the extension pipe is connected to the center of a ring-shaped floater, a reflecting screen is arranged at the upper end of the extension pipe, the reflecting screen corresponds to a probe of the ultrasonic liquid level meter, and the length of the extension pipe is equal to the horizontal height of the ultrasonic liquid level meter on the pit-side vertical frame and is not less than the length of the positioning column. This novel pit liquid level measurement device avoids pit thick liquid foam and fog to influence the testing process through promoting the liquid level relative height in step, has the characteristics that detect stably, data are accurate, system operation safety.
Description
Technical Field
The utility model belongs to the technical field of the liquid level detection equipment, specific saying relates to a power plant desulfurization absorption tower pit liquid level measurement device.
Background
The desulfurization system of the power plant generally adopts a limestone wet flue gas desulfurization process, and a pit of an absorption tower collects washing water and slurry of various washing devices. The high security that causes certain harm to the unit operation of desulfurization liquid level defect, if the regional liquid level monitoring of pit is not in place, the overflow of pit can take place, causes the lime stone thick liquid extravagant and influence the environment, and pit liquid level indication is inaccurate, causes the frequent start and stop of pit pump, influences the safe in utilization and the life of pump, also can cause the waste of electric power resource. In order to improve the operation safety and stability of the absorption tower pit pump, realize clean production, improve the utilization efficiency of resources and reduce the generation of pollutants, the correct monitoring of the pit liquid level is particularly important.
At present, non-contact measuring devices are mostly adopted, but all have certain use defects, such as high manufacturing cost and complex structure of a steel belt liquid level meter, and are limited by the fact that pit spaces of absorption towers cannot be smoothly installed; the radar liquid level meter is applied to an absorption tower pit, and the surface of a liquid medium in the pit is severely fluctuated due to the fact that the absorption tower pit is provided with a stirrer, so that the fluctuation of the measurement value of the radar liquid level meter is large; the magnetic flap level gauge cannot be applied to measurement of water mist and liquid containing large foam; the ultrasonic liquid level meter is inconvenient to use in the occasions with water mist and easily generating a large amount of foamy media, and easily absorbs sound waves or interferes sound wave emission to cause the problems of signal loss, precision reduction and the like.
Due to the problems, when a certain type of measuring device is used singly, the failure rate of the monitoring system is high, and corresponding technical improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a through promoting liquid level relative height in step, avoid pit thick liquid foam and fog to influence the testing process and detect stable, the accurate, the safe power plant desulfurization absorption tower pit liquid level measurement device of system operation of data.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a power plant desulfurization absorption tower pit liquid level measurement device which characterized in that: including hole limit grudging post and set up the ultrasonic wave level gauge on its tip mounting platform, set up the reference column in the pit, the outside suit of reference column can be with its mutual gliding extension pipe, the center at the ring type float is connected to extension pipe lower extreme, and its upper end is equipped with the reflecting screen, the reflecting screen corresponds with the probe of ultrasonic wave level gauge, the length of extension pipe equals and is not less than with the level of ultrasonic wave level gauge on the limit grudging post of hole limit.
The additional technical characteristics of the power plant desulfurization absorption tower pit liquid level measuring device further comprise:
the annular floater is an annular rubber ring or a balloon with a through hole formed in the center, and the lower end of the extension tube is positioned in the central through hole;
the installation platform is provided with a waveguide tube, the upper end of the waveguide tube is sleeved outside a probe of the ultrasonic liquid level meter, and a region of a beam angle of the probe projected on the reflecting screen does not touch the inner wall of the waveguide tube;
the waveguide tube is connected with the pit edge vertical frame through a first stretching arm support, and the positioning column is connected with the side wall of the pit through a second stretching arm support.
The utility model provides a power plant desulfurization absorption tower pit liquid level measurement device compares with prior art, has following advantage: because the novel pit liquid level measuring device synchronously lifts the ultrasonic liquid level meter and the pit liquid level through the mounting platform at the end part of the pit edge vertical frame and the extension pipe connected with the liquid level ring-shaped floater, and measures the liquid level through the reflecting screen at the upper end of the extension pipe, the adverse effects of a large amount of foam, water mist and the like on the liquid level surface of the desulfurization absorption tower on the ultrasonic measurement are overcome, the fault rate of the traditional liquid level monitoring system is reduced, and the novel pit liquid level measuring device has the advantages of stable measuring process, accurate liquid level data and long-term and safe operation of a pit system; secondly, because set up the reference column in the pit, the outside suit of reference column can be with its mutual gliding extension pipe, the center at the ring type float is connected to extension pipe lower extreme, the length of extension pipe equals and is not less than the length of reference column with the level of the ultrasonic wave level gauge on the limit grudging post of pit, the extension pipe that is connected with the ring type float promptly forms extending structure with the reference column in the pit, and use the pit liquid level as driving factor, the ring type float changes along with the liquid level, the synchronous elevating movement of reflecting screen on the extension pipe, the relative liquid level change of reaction, moreover, ring type float suit is fixed on the extension pipe, move at reference column direction rule, can not receive the influence of agitator and pit pump in the pit, the operation is stable, the interference killing feature is strong, and durability, and suitable harsh environmental condition.
Drawings
Fig. 1 is the structure schematic diagram of the utility model discloses power plant desulfurization absorption tower pit liquid level measurement device.
Detailed Description
The structure and the working principle of the device for measuring the liquid level in the pit of the desulfurization absorption tower of the power plant provided by the invention are further described in detail with reference to the accompanying drawings.
Referring to fig. 1, the structure of the pit liquid level measuring device of the power plant desulfurization absorption tower comprises a pit edge vertical frame 1 and an ultrasonic liquid level meter 2 arranged on an end mounting platform 11 of the pit edge vertical frame, a positioning column 3 is arranged in a pit a, an extension pipe 4 capable of sliding mutually with the positioning column 3 is sleeved outside the positioning column 3, the lower end of the extension pipe 4 is connected to the center of a ring-shaped floater 5, a reflecting screen 6 is arranged at the upper end of the extension pipe, the reflecting screen 6 corresponds to a probe 21 of the ultrasonic liquid level meter 2, and the length of the extension pipe 4 is equal to the horizontal height of the ultrasonic liquid level meter 2 on the pit edge vertical frame 1 and is not less than the length of the positioning column 3.
The working principle is as follows: bury pit limit grudging post 1 underground beside desulfurization absorption tower pit a, its tip unsettled position is equipped with mounting platform 11, take one's place ultrasonic wave level gauge 2 installation, bury reference column 3 underground in pit a, reference column 3 and extension pipe 4 cup joint and can stretch out and draw back the slip each other, the center of extension pipe 4 lower extreme and ring type float 5 is connected, be used for reflecting liquid level b change, upper end reflecting screen 6 and liquid level b motion synchronization, because the length of extension pipe 4 equals and is not less than the length of reference column 3 with the level height of ultrasonic wave level gauge 2 on pit limit grudging post 1, equal to carry out synchronous improvement with the relative position of liquid level b and probe 21, avoid foam and water smoke in the pit to ultrasonic measurement's influence, monitoring data is accurate, system operation is stable, the fault rate is showing and is reduced.
In the structure of the pit liquid level measuring device of the desulfurization absorption tower of the power plant,
the annular floater 5 is mostly made of plastic or rubber materials, the inside of the annular floater is filled with gas, the shape of the annular floater can be a balloon with a through hole formed in the center, the lower end of the extension pipe 4 is positioned in the through hole in the center, or the annular floater can also be an annular rubber ring, namely a life buoy, the section of the annular floater is flattened, the height of the body is small, the annular floater is not influenced by the density change of a liquid medium, the draft change is small, and the measurement error is small;
as a preferred embodiment, the mounting platform 11 is connected to the waveguide 7 by welding or screwing, the upper end of the waveguide 7 is sleeved outside the probe 21 of the ultrasonic level meter 2, the region of the beam angle θ of the probe 21 projected on the reflecting screen 6 does not touch the inner wall of the waveguide 7, i.e. the waveguide 7 protects the probe of the ultrasonic level meter 2, prevents the probe from being damaged by the corrosion of desulfurization liquid and gas in the pit environment, and also prevents the problems of dew formation and the like, thereby improving the stability and applicability of the measuring device, meanwhile, the tubular structure protects the transmission and recovery of ultrasonic waves from external interference, improving the accuracy of measurement, and the lower end of the waveguide 7 can be placed below the liquid level b, so that the annular float 5 is placed therein, thereby achieving a better protection effect;
in order to further improve the structural stability of the measuring device, the waveguide 7 is connected with the pit-side stand 1 through the first stretching arm support 81, the positioning column 3 is connected with the side wall of the pit a through the second stretching arm support 82, when the stirrer is used for stirring operation in the pit, the positioning column 3 cannot shake for many degrees, the guiding strength is higher, in order to avoid the influence of the second stretching arm support 82 on the lifting motion of the annular floater 5, the mounting position of the second stretching arm support 82 is preferably below the lowest liquid level allowed by pit slurry filling operation (namely the horizontal liquid level of the minimum value of the slurry in the pit), after the pipe body of the waveguide 7 is connected with the pit-side stand 1 through the first stretching arm support 81, the overall compactness is enhanced, and the equipment runs more safely.
Claims (4)
1. The utility model provides a power plant desulfurization absorption tower pit liquid level measurement device which characterized in that: including hole limit grudging post and set up the ultrasonic wave level gauge on its tip mounting platform, set up the reference column in the pit, the outside suit of reference column can be with its mutual gliding extension pipe, the center at the ring type float is connected to extension pipe lower extreme, and its upper end is equipped with the reflecting screen, the reflecting screen corresponds with the probe of ultrasonic wave level gauge, the length of extension pipe equals and is not less than with the level of ultrasonic wave level gauge on the limit grudging post of hole limit.
2. The power plant desulfurization absorption tower pit liquid level measurement device of claim 1, characterized in that: the annular floater is an annular rubber ring or a balloon with a through hole formed in the center, and the lower end of the extension tube is positioned in the central through hole.
3. The power plant desulfurization absorption tower pit liquid level measurement device of claim 1, characterized in that: the installation platform is provided with a waveguide tube, the upper end of the waveguide tube is sleeved outside a probe of the ultrasonic liquid level meter, and the area of the beam angle of the probe projected on the reflection screen does not touch the inner wall of the waveguide tube.
4. The power plant desulfurization absorption tower pit liquid level measurement device of claim 3, characterized in that: the guided wave pipe through first exhibition arm support with hole limit grudging post is connected, the reference column passes through second exhibition arm support and is connected with the pit lateral wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221803855.4U CN217930454U (en) | 2022-07-14 | 2022-07-14 | Power plant desulfurization absorption tower pit liquid level measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221803855.4U CN217930454U (en) | 2022-07-14 | 2022-07-14 | Power plant desulfurization absorption tower pit liquid level measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217930454U true CN217930454U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221803855.4U Active CN217930454U (en) | 2022-07-14 | 2022-07-14 | Power plant desulfurization absorption tower pit liquid level measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217930454U (en) |
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2022
- 2022-07-14 CN CN202221803855.4U patent/CN217930454U/en active Active
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