CN219319524U - Sewage pool liquid level measuring device - Google Patents
Sewage pool liquid level measuring device Download PDFInfo
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- CN219319524U CN219319524U CN202222881192.4U CN202222881192U CN219319524U CN 219319524 U CN219319524 U CN 219319524U CN 202222881192 U CN202222881192 U CN 202222881192U CN 219319524 U CN219319524 U CN 219319524U
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Abstract
The utility model discloses a sewage pool liquid level measuring device which comprises a fixed support and a radar liquid level meter, wherein the fixed support comprises a first support, a second support and a third support, the first support is vertically and fixedly arranged on a sewage pool, the second support is vertically arranged at the top end of one side, close to a measured liquid, of the first support, the third support is obliquely arranged between the first support and the second support, the radar liquid level meter is hung on the second support and vertically hung above the measured liquid, the radar liquid level meter comprises an instrument main body, an antenna and a flange, and the bottom end of the instrument main body is fixedly connected with the top end of the antenna through the flange, and the radar liquid level meter further comprises a purging device. The radar level gauge is applied to realize the transformation from contact measurement to non-contact measurement, the measurement is stable and the effect is good, meanwhile, the fault and maintenance rate are greatly reduced, the operation stability of a sewage pump is improved, the probe water mist can be blown away by the blowing device, the interference is avoided, and the measurement is more stable and accurate.
Description
Technical Field
The utility model relates to the technical field of liquid level measurement, in particular to a sewage tank liquid level measurement device.
Background
The sewage tank is internally provided with a liquid level meter for liquid level measurement so that when the liquid level reaches a certain height, the sewage pump is started to discharge sewage without overflowing, the sewage pump is started and stopped at present by judging the height of the liquid level through the floating ball liquid level meter, and the floating ball liquid level meter adopts contact measurement.
Disclosure of Invention
The utility model aims to provide a sewage tank liquid level measuring device which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a effluent water sump liquid level measurement device which characterized in that: including fixed bolster, radar level gauge and sweeping device, the fixed bolster includes first support, second support and third support, the vertical fixed mounting of first support is on the effluent water sump, the second support is installed perpendicularly in the first support and is close to the top of one side of surveying the liquid, the third support slant sets up between first support and second support, the radar level gauge hangs on the second support, hangs perpendicularly in being surveyed liquid top, the radar level gauge includes instrument main part, antenna and flange, the bottom of instrument main part passes through flange fixed connection with the top of antenna, fixed mounting has the display screen of display device state in the instrument main part, sweeping device includes air duct, ring pipe, the air duct is vertical to be set up, and the lower extreme communicates with each other with the ring pipe, the ring pipe is located antenna tip coaxial setting of radar level gauge below, be provided with a plurality of shower nozzles on the ring pipe.
Preferably, the outside of instrument main part cup joints the protection casing.
Preferably, the antenna is in the shape of a rod.
Preferably, the spray heads are uniformly distributed along the circumferential direction of the annular pipe.
Preferably, the included angle between the spray head and the horizontal direction is 40-70 degrees.
Preferably, the other end of the air duct is connected with an air pump station, and a valve for controlling the opening and closing of compressed air is arranged on the air duct.
Compared with the prior art, the utility model has the beneficial effects that: the radar liquid level gauge adopts a non-contact measurement mode, has no movable parts, has high reliability, and is suitable for high-viscosity, easily-crystallized and high-temperature and high-pressure mediums; the radar liquid level gauge is formed integrally, and is small in size, convenient to install and convenient to maintain; the measuring precision is high, the microwave measuring method is adopted, the wave speed energy is low, and the method is harmless to human bodies and the environment; the measurement is stable and the effect is good, meanwhile, the fault and maintenance rate is greatly reduced, and the operation stability of the sewage pump is improved; the blowing device can blow off the water mist at the end part of the probe to clean the probe, so that the influence of the water mist attached to the probe on the measurement accuracy of the radar level gauge is avoided.
Drawings
FIG. 1 is a schematic diagram of a sewage tank liquid level measuring device according to the present utility model;
FIG. 2 is a schematic view of a radar level gauge of a sewage tank level gauge according to the present utility model;
FIG. 3 is a schematic view of a purge device of a sump level measurement device according to the present utility model;
in the figure: 101. the radar level gauge comprises a first support, 102, a second support, 103, a third support, 2, a radar level gauge, 201, an antenna, 202, a flange, 203, an instrument main body, 204, a display screen, 205, a protective shell, 301, an air duct, 302, an annular pipe, 303 and a spray head.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2, a sewage tank liquid level measuring device is characterized in that: including fixed bolster, radar level gauge 2 and sweep the device, the fixed bolster includes first support 101, second support 102 and third support 103, the vertical fixed mounting of first support 101 is on the effluent water sump, the second support 102 is installed perpendicularly in the top of the one side that first support 101 is close to the liquid that is surveyed, the slant of third support 103 sets up between first support 101 and second support 102, radar level gauge 2 hangs on second support 102, hangs perpendicularly in the liquid top that is surveyed, radar level gauge 2 includes instrument main part 203, antenna 201 and flange 202, flange 202 fixed connection is passed through with the top of antenna 201 in the bottom of instrument main part 2, fixed mounting has the display screen 204 of display device state on the instrument main part 203. The radar liquid level meter is applied to realize the conversion from contact measurement to non-contact measurement, has stable measurement and good effect, is not influenced by outdoor winter temperature, greatly reduces faults and maintenance rate, and improves the operation stability of a sewage pump.
The purging device comprises an air duct 301 and an annular pipe 302, wherein the air duct 301 is vertically arranged, the lower end of the air duct 301 is communicated with the annular pipe 302, the annular pipe 302 is coaxially arranged at the end part of an antenna 201 of the radar liquid level meter 2 and is positioned below the end part of the antenna 201, a plurality of spray heads 303 are arranged on the annular pipe 302, the spray heads 303 are uniformly distributed along the annular direction of the annular pipe 302, the included angle between the spray heads 303 and the horizontal direction is 40-70 degrees, the other end of the air duct 301 is connected with an air pump station, and a valve for controlling the opening and closing of compressed air is arranged on the air duct 301. When the weather is cold in early spring late autumn or winter, the probe easily generates water mist, interference is caused to liquid level measurement, the blowing device can blow off the water mist, the probe is cleaned, and the influence of the water mist attached to the probe on the measurement accuracy of the radar liquid level meter is avoided.
The outer part of the instrument main body 203 is sleeved with a protective shell 205, and the antenna 201 is in a rod shape. The radar level gauge is divided into a rod type antenna and a horn mouth type antenna according to the shape of the antenna, and the rod type antenna is suitable for low-temperature, high-pressure and corrosive mediums; the horn antenna is suitable for conducting liquid, high-temperature occasions or installation in pipelines, and the sewage pool liquid level measurement is suitable for a rod type.
The working principle of the utility model is as follows: the radar level gauge adopts a microwave measurement method, microwaves are high-frequency electromagnetic waves transmitted at the light speed c, when the transmitted electromagnetic waves are reflected back when the transmitted electromagnetic waves hit the liquid level of a medium, the radar determines the distance h between an antenna and a reflecting surface by measuring the time delay T between the transmitted waves and the reflected waves, T=2h/c (c=300000 km/s), the light speed c is not influenced by the environment of the medium, the transmission speed is stable, and h can be obtained only by measuring the delay time T. The radar system continuously transmits linear high-frequency signals (i.e. signals with the frequency and time in a linear relation), so that the difference frequency between the frequency of the transmitted signals and the frequency of the reflected signals can be obtained, the difference frequency is proportional to the delay time t and also proportional to the null height h, and the difference between the null height h and the Chi Gaozhi is the liquid level value after the difference frequency signals are subjected to data processing.
In the installation rod type radar liquid level meter, if the length of a connecting pipe is longer than that of a shielding pipe, echo received by a radar is weaker, irregular jump occurs in a display value, and errors are larger, so that the connecting pipe is modified, and the length of the connecting pipe is shorter than that of the shielding pipe by shortening the connecting pipe, so that the problem is solved; the radar liquid level meter is used for measuring the liquid level, so that a part of emitted waves are required to be reflected back from the surface of the object, and the surface of the liquid in the tank is formed into an uneven crust by waste and dirty oil due to long-term operation, so that the echo is scattered, and measurement errors are caused; the transmission cable should adopt shielded cable, on the one hand, overcome electromagnetic interference signal, on the other hand, overcome the influence of electric capacity between the old cable, if there is strong interference source nearby, radar level gauge will not normally work, should in time install anti-interference measure additional, make ground connection, isolate the interference from space and cable two aspects, eliminate the influence to the measurement, the electrical power generating system should have voltage regulator device, should install isolation transformer additional if there is the interference source, high frequency filter etc. in order to guarantee that one, secondary instrument power supply is normal, the power supply of radar level gauge is DC24V. Rod radar level gauge models numerous, such as HLRD312, the rod radar level gauge described in the present utility model includes, but is not limited to, the above models.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a effluent water sump liquid level measurement device which characterized in that: including fixed bolster, radar level gauge (2) and sweeping device, the fixed bolster includes first support (101), second support (102) and third support (103), the vertical fixed mounting of first support (101) is on the effluent water sump, second support (102) perpendicular mounting is near the top of one side of survey liquid in first support (101), third support (103) slant sets up between first support (101) and second support (102), radar level gauge (2) hang on second support (102), perpendicular suspension is in the liquid top that is surveyed, radar level gauge (2) include instrument main part (203), antenna (201) and flange (202), the bottom of instrument main part (203) passes through flange (202) fixed connection with the top of antenna (201), fixed mounting has display screen (204) of display device state on instrument main part (203), the device includes air duct (301), annular duct (302), air duct (301) vertical setting, lower extreme and annular duct (302) communicate with each other with the antenna (201), annular duct (302) are located down and antenna (201) and are located down the coaxial end (201), and antenna (201) are located down.
2. A lagoon level measurement device according to claim 1, wherein: the outside of instrument main part (203) cup joints protection casing (205).
3. A lagoon level measurement device according to claim 1, wherein: the antenna (201) is shaped as a rod.
4. A lagoon level measurement device according to claim 1, wherein: the spray heads (303) are uniformly distributed along the circumferential direction of the annular pipe (302).
5. A lagoon level measurement device according to claim 1, wherein: the included angle between the spray head (303) and the horizontal direction is 40-70 degrees.
6. A lagoon level measurement device according to claim 1, wherein: the other end of the air duct (301) is connected with an air pump station, and a valve for controlling the opening and closing of compressed air is arranged on the air duct (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222881192.4U CN219319524U (en) | 2022-10-31 | 2022-10-31 | Sewage pool liquid level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222881192.4U CN219319524U (en) | 2022-10-31 | 2022-10-31 | Sewage pool liquid level measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219319524U true CN219319524U (en) | 2023-07-07 |
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ID=87031388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222881192.4U Active CN219319524U (en) | 2022-10-31 | 2022-10-31 | Sewage pool liquid level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219319524U (en) |
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2022
- 2022-10-31 CN CN202222881192.4U patent/CN219319524U/en active Active
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