CN210741609U - Storage tank liquid level measurement system with more accurate measurement - Google Patents
Storage tank liquid level measurement system with more accurate measurement Download PDFInfo
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- CN210741609U CN210741609U CN201921827907.XU CN201921827907U CN210741609U CN 210741609 U CN210741609 U CN 210741609U CN 201921827907 U CN201921827907 U CN 201921827907U CN 210741609 U CN210741609 U CN 210741609U
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Abstract
The utility model discloses a measure more accurate storage tank liquid level measurement system, relate to the fluid and store the technical field, aim at solving the storage tank and can produce the foam in the in-process of oil return, these foams easily suspend at the storage tank top, easily lead to forming the false liquid level in the storage tank, lead to adopting the inaccurate technical problem of liquid level that above-mentioned measuring method measured, its technical scheme main points are including the storage tank body, storage tank body one end wall bottom is provided with the detection pipeline, the storage tank body is provided with pressure difference type liquid level changer on being close to the one end wall of detection pipeline, pressure difference type liquid level changer is provided with high pressure mouth of pipe and low pressure mouth of pipe, the detection pipeline is connected in; the inside atmospheric pressure test tube that is provided with of storage tank body, atmospheric pressure test tube one end sets up at storage tank body top, and the other end is connected in the low pressure mouth of pipe of pressure differential type level transmitter. The effect of more accurate liquid level measurement in the storage tank is achieved.
Description
Technical Field
The utility model relates to a technical field is stored to fluid, and more specifically says, it relates to a measure more accurate storage tank liquid level measurement system.
Background
The large-scale steam turbine needs to be provided with a storage tank to store lubricating oil in the working process, and the storage tank is usually made of opaque materials, so the liquid level of the lubricating oil in the storage tank needs to be measured by a measuring system.
The prior Chinese patent with the publication number of CN102095469B discloses a method for measuring the liquid level of a storage tank by using a camera, which comprises the steps of emitting three visible light beams by three laser light sources to irradiate the liquid level, collecting images of the liquid level by the camera and transmitting the images to a computer, calculating the area formed by three intersection points of the laser beams on the liquid level by an image processing technology, and calculating the height of the liquid level according to the areas. Its advantages are non-contact measurement, low cost and high fuel oil metering.
However, the storage tank generates foams during the oil return process, and the foams are easily suspended on the top of the storage tank, so that a false liquid level is easily formed in the storage tank, and the liquid level measured by the measuring method is inaccurate, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a measure more accurate storage tank liquid level measurement system, it has the advantage more accurate to the level measurement in the storage tank.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a more accurate measurement system for the liquid level of a storage tank comprises a storage tank body, wherein a detection pipeline is arranged at the bottom end of one end wall of the storage tank body, a differential pressure type liquid level transmitter is arranged on the end wall, close to the detection pipeline, of the storage tank body, the differential pressure type liquid level transmitter is provided with a high-pressure pipe orifice and a low-pressure pipe orifice, and the detection pipeline is connected to the high-pressure pipe orifice; the inside atmospheric pressure test tube that is provided with of storage tank body, atmospheric pressure test tube one end sets up at storage tank body top, and the other end is connected in the low pressure mouth of pipe of pressure differential type level transmitter.
Through adopting above-mentioned technical scheme, the high pressure pipe mouth of pressure differential type liquid level transmitter connect the detection pipeline on the storage tank body end wall can detect the liquid level height of storage tank body inside, thereby the low pressure mouth of pipe communicates with each other through atmospheric pressure detection pipe and storage tank body top simultaneously and sends into the low pressure mouth of pipe with the air pressure transport at atmospheric pressure detection pipe top. Because the inside oil smoke of storage tank body is detached to the oil smoke fan that need set up in storage tank body top, so the inside top of storage tank body is the negative pressure for the storage tank body outside, and the low pressure mouth of pipe of pressure differential type liquid level transmitter is direct to be connected through the atmospheric pressure detection union coupling and makes the pressure that the low pressure mouth of pipe surveyed more accurate with the inside top of storage tank body to the degree of accuracy to the inside liquid level measurement of storage tank body has been improved.
Further, be provided with the collection tank between atmospheric pressure test tube and the low pressure mouth of pipe, collection tank body bottom is provided with oil outlet pipe, the last fuel outlet valve that is provided with of oil outlet pipe.
By adopting the technical scheme, because liquefied oil gas exists at the top of the storage tank, the liquefied oil gas is condensed in the air pressure detection pipe and the low-pressure pipe orifice to form oil drops, and the oil drops flow into the low-pressure pipe orifice to cause the pressure of the low-pressure pipe orifice to rise, so that the detection result is inaccurate; and the setting of collection tank is convenient for collect the fluid after condensing to reduce fluid and flow into the low pressure mouth of pipe.
Further, the outer side wall of the collecting tank is provided with an observation groove, and the inner side wall of the observation groove is provided with a transparent glass plate.
Through adopting above-mentioned technical scheme, the setting up of observation groove and transparent glass board makes the observation groove be transparent, so be convenient for from the outside wall direct observation of collection tank to the inside liquid level height of collection tank to be convenient for open the fuel outlet valve when the liquid level is higher and carry out the oil drain.
Further, the equal fixed connection of atmospheric pressure detection pipe and low pressure mouth of pipe is located observation groove top department at the collection tank, be provided with the pipe of being detained buckling that detains fluid between collection tank and the low pressure mouth of pipe, buckle and detain pipe one end and connect and the collection tank, the other end is connected in the low pressure mouth of pipe.
By adopting the technical scheme, the air pressure detection pipe and the low-pressure pipe orifice are connected to the top of the collection tank positioned at the observation groove, so that the collection length range of the collection tank is maximum; simultaneously, the air pressure detection pipe and the low-pressure pipe opening are fixed at the top, so that the air pressure of the air pressure detection pipe can directly enter the low-pressure pipe opening. In addition, the arrangement of the bent retention pipe enables a height difference to exist between the collecting tank and the low-pressure pipe orifice, and the height of the low-pressure pipe orifice is higher than that of the collecting tank, so that the influence on detection precision caused by the condensed oil drops flowing into the low-pressure pipe orifice is further reduced.
Furthermore, one end of the air pressure detection pipe, which is far away from the low-pressure pipe orifice, is provided with an arc-shaped oil resistance pipe.
Through adopting above-mentioned technical scheme, the arc hinders setting of oil pipe and forms an arc top at the atmospheric pressure detection pipe top to can effectively alleviate and rock and lead to fluid to irritate the influence in the atmospheric pressure detection pipe and detect the precision because of the lubricating oil liquid level.
Further, be provided with visual level gauge on the one end lateral wall that the detection pipeline was kept away from to the storage tank body, visual level gauge bottom is provided with the lower liquid pipe with storage tank body intercommunication, visual level gauge top is provided with the last liquid pipe with storage tank body intercommunication.
Through adopting above-mentioned technical scheme, the inside liquid level height of storage tank body is convenient for observe directly perceivedly from storage tank body outside to the setting of visual level gauge to make differential pressure type level transmitter correspond with the zero point of visual level gauge with differential pressure type level transmitter's zero offset, thereby can make differential pressure type level transmitter's registration and the registration one-to-one of visual level gauge, thereby the liquid level of being convenient for observes.
Furthermore, the upper liquid pipe and the lower liquid pipe are both provided with an isolation valve.
Through adopting above-mentioned technical scheme, the setting of isolating valve is convenient for seal liquid feeding pipe and downcomer to use the level gauge of visualing to open the isolating valve in needs, close the isolating valve at the level gauge of need not using the level gauge of visualing, thereby seal liquid feeding pipe and downcomer when the level gauge of visualing damages.
Furthermore, a five-valve set is fixed on the high-pressure nozzle and the low-pressure nozzle.
By adopting the technical scheme, the five valve groups are arranged, so that the on-off of the differential pressure type liquid level transmitter can be controlled conveniently, and whether detection is carried out or not can be controlled; meanwhile, the five valve banks are arranged, so that air in the high-pressure pipeline is exhausted, and the accuracy of a detection result is further improved.
To sum up, the utility model discloses following beneficial effect has:
1. the technology that the differential pressure type liquid level transmitter, the detection pipeline and the air pressure detection pipe are matched is adopted, so that the effect of improving the detection precision of the differential pressure type liquid level transmitter is achieved;
2. the technology that the collecting tank, the oil outlet pipeline, the oil drain valve, the observation hole and the transparent glass plate are matched is adopted, so that the effect of collecting oil drops condensed in the air pressure detection pipe and reducing the influence on the detection precision is achieved;
3. adopted to buckle and detain pipe and arc and hinder oil pipe matched with technique, reduced fluid and rocked and lead to fluid to pour into the atmospheric pressure test tube and detain the pipe through buckling and detain in staying the pipe with fluid to the production reduces the effect that fluid flows backward to the low pressure mouth of pipe and produces the influence to measurement accuracy.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a tank level measuring system with more accurate measurement in one embodiment;
fig. 2 is an enlarged schematic view of a portion a of fig. 1.
In the figure: 1. a tank body; 11. detecting a pipeline; 12. an air pressure detecting tube; 121. an arc oil resistance pipe; 2. a differential pressure type liquid level transmitter; 21. a high pressure nozzle; 22. a low pressure orifice; 23. five valve banks; 3. a collection tank; 31. an oil outlet pipeline; 311. an oil drain valve; 32. bending the retention tube; 321. a horizontal portion; 322. a vertical portion; 323. a connecting portion; 33. an observation tank; 331. a transparent glass plate; 4. a visual level gauge; 41. a liquid feeding pipe; 42. a liquid discharging pipe; 43. an isolation valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
the utility model provides a measure more accurate storage tank liquid level measurement system, refers to figure 1, and it includes storage tank body 1, and 1 one end wall bottom of storage tank body is provided with detection pipeline 11, and detection pipeline 11 welds on 1 end wall of storage tank body and communicates with each other with 1 inside of storage tank body. And a pressure difference type liquid level transmitter 2 is arranged on the end wall of one end of the storage tank body 1 close to the detection pipeline 11. The differential pressure type liquid level transmitter 2 is provided with a high-pressure pipe orifice 21 and a low-pressure pipe orifice 22, the high-pressure pipe orifice 21 and the low-pressure pipe orifice 22 are fixed with a five-valve group 23, and the high-pressure pipe orifice 21 and the low-pressure pipe orifice 22 are respectively connected to two ports on the instrument side of the five-valve group 23.
Referring to fig. 1, the detection pipeline 11 is connected to the high-pressure nozzle 21, the detection pipeline 11 is connected to the corresponding end of the five-valve group 23 located at the process side of the high-pressure nozzle 21, and the lubricating oil inside the storage tank body 1 enters the five-valve group 23 through the detection pipeline 11 and flows into the high-pressure nozzle 21 under the control of the five-valve group 23. An air pressure detecting pipe 12 is arranged in the storage tank body 1, the air pressure detecting pipe 12 is fixed on the inner side wall of the storage tank body 1 through a bolt and a pipe clamp, and one end of the air pressure detecting pipe 12 is arranged at the top of the storage tank body 1, so that the air pressure detecting pipe 12 is communicated with the space at the top of the storage tank body 1; the other end is connected to a low-pressure pipe orifice 22 of the differential pressure type liquid level transmitter 2 through a five-valve group 23, and the air pressure detection pipe 12 is connected to a corresponding port of the high-pressure pipe orifice 21 of the five-valve group 23 located on the process side. The air pressure detection pipe 12 sends the air at the top of the storage tank body 1 into a low-pressure pipe opening 22 of the differential pressure liquid level transmitter through the air pressure detection pipe 12 and the five-valve group 23 so as to detect the liquid level pressure inside the storage tank body 1. The differential pressure type liquid level transmitter 2 transmits the transmitted liquid level signal to a data management terminal in a wired or wireless mode for management so as to realize the accuracy and remote management of liquid level detection.
Referring to fig. 1 and 2, a collecting tank 3 is disposed between the air pressure detecting tube 12 and the low pressure nozzle 22, and the air pressure detecting tube 12 and the low pressure nozzle 22 are respectively fixed on the outer side wall of the collecting tank 3. The bottom end of the body of the collecting tank 3 is provided with an oil outlet pipeline 31, the oil outlet pipeline 31 is integrally formed with the collecting tank 3 and communicated with the inside of the collecting tank 3, an oil drain valve 311 is arranged on the oil outlet pipeline 31, the oil drain valve 311 is fixed on the oil outlet pipeline 31 through threaded connection, and smoke in the air pressure detecting pipe 12 and the low-pressure pipe orifice 22 is condensed to form oil drops to flow into the collecting tank 3 for collection.
Referring to fig. 2, the outer side wall of the collection tank 3 is provided with an observation groove 33, and the observation groove 33 is opened in the side wall of the collection tank 3 and communicates with the inside of the collection tank 3. The inner side wall of the observation tank 33 is provided with a transparent glass plate 331, and the transparent glass plate 331 is fixed on the inner side wall of the observation tank 33 by adhering so as to visually see the liquid level inside the collection tank 3.
Referring to fig. 2, the air pressure detecting tube 12 and the low pressure nozzle 22 are both fixedly connected to the top of the collecting tank 3 at the top of the observation groove 33, and the air pressure detecting tube 12 and the low pressure nozzle 22 are respectively fixed by threads and flanges to increase the collecting range of the collecting tank 3, so that the air pressure of the air pressure detecting tube 12 can directly enter the low pressure nozzle 22 from the top of the collecting tank 3. Be provided with between collection tank 3 and the low pressure mouth of pipe 22 and detain pipe 32 with buckling of fluid detention, buckle and detain pipe 32 and include horizontal part 321, vertical portion 322 and connecting portion 323, horizontal part 321, vertical portion 322 and connecting portion 323 integrated into one piece set up, horizontal one end is fixed with collection tank 3, the other end is fixed with vertical portion 322, the one end and the connecting portion 323 that horizontal part 321 was kept away from to vertical portion 322 are fixed, connecting portion 323 is fixed with low pressure mouth of pipe 22, horizontal part 321 and vertical portion 322 mutually perpendicular, connecting portion 323 highly is higher than the height of horizontal part 321, connecting portion 323 is connected in the corresponding port that five valves 23 are located the low pressure mouth of pipe 22 of technology side, in order to prevent that oil drips.
Referring to fig. 1, an arc-shaped oil blocking pipe 121 is disposed at an end of the air pressure detecting pipe 12 away from the low pressure pipe orifice 22, and the arc-shaped oil blocking pipe 121 is integrally formed with the air pressure detecting pipe 12 and is communicated with the air pressure detecting pipe 12. The arc oil resistance pipe 121 is U-shaped, the opening of the arc oil resistance pipe 121 faces downwards, the pipe orifice at one end is welded and fixed with the air pressure detection pipe 12, and the other end is vacant to be communicated with the top of the storage tank body 1.
Referring to fig. 1, a visual liquid level meter 4 is arranged on the side wall of one end, away from a detection pipeline 11, of a storage tank body 1, a lower liquid pipe 42 communicated with the storage tank body 1 is arranged at the bottom end of the visual liquid level meter 4, an upper liquid pipe 41 communicated with the storage tank body 1 is arranged at the top end of the visual liquid level meter 4, the upper liquid pipe 41 and the lower liquid pipe 42 are welded and fixed on the end wall of the storage tank body 1 respectively, the visual liquid level meter 4 is communicated with the upper liquid pipe 41 and the lower liquid pipe 42 respectively, and lubricating oil inside the storage tank body 1 flows into the visual liquid level meter 4 under the action of gravity to display the.
Referring to fig. 1, an isolation valve 43 is disposed on each of the upper liquid pipe 41 and the lower liquid pipe 42, the isolation valve 43 is fixed on the upper liquid pipe 41 and the lower liquid pipe 42 through bolts and flanges, the isolation valve 43 blocks the upper liquid pipe 41 and the lower liquid pipe 42, so that the visual liquid level meter 4 is provided to observe the liquid level of the storage tank body 1 when measurement is needed, and the isolation valve 43 is closed when measurement is not needed.
The working principle is as follows:
when the liquid level in the storage tank body 1 needs to be detected, the five valve groups 23 at the bottom end of the differential pressure type liquid level transmitter 2 are opened, and then air in the detection pipeline 11 is exhausted through the exhaust valve. At the moment, the lubricating oil in the storage tank body 1 flows into the high-pressure pipe orifice 21 through the detection pipeline 11 and the five-valve group 23 under the action of gravity; the air pressure at the top of the storage tank body 1 flows into the low-pressure pipe opening 22 under the action of the air pressure detection pipe 12 and the five-valve group 23, so that the liquid level height inside the storage tank body 1 is detected through the pressure difference between the two ends of the differential pressure type liquid level transmitter 2, and the liquid level height is converted into data through the differential pressure type liquid level transmitter 2 to be transmitted remotely.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a measure more accurate storage tank liquid level measurement system, includes storage tank body (1), its characterized in that: a detection pipeline (11) is arranged at the bottom end of one end wall of the storage tank body (1), a pressure difference type liquid level transmitter (2) is arranged on one end wall, close to the detection pipeline (11), of the storage tank body (1), the pressure difference type liquid level transmitter (2) is provided with a high-pressure pipe orifice (21) and a low-pressure pipe orifice (22), and the detection pipeline (11) is connected to the high-pressure pipe orifice (21); the storage tank is characterized in that an air pressure detection pipe (12) is arranged inside the storage tank body (1), one end of the air pressure detection pipe (12) is arranged at the top of the storage tank body (1), and the other end of the air pressure detection pipe is connected to a low-pressure pipe opening (22) of the differential pressure type liquid level transmitter (2).
2. A more accurate tank level measurement system according to claim 1 wherein: be provided with collection tank (3) between atmospheric pressure test tube (12) and low pressure mouth of pipe (22), collection tank (3) body bottom is provided with oil outlet pipe way (31), be provided with fuel outlet valve (311) on oil outlet pipe way (31).
3. A more accurate tank level measurement system according to claim 2 wherein: the lateral wall of the collecting tank (3) is provided with an observation groove (33), and the inner lateral wall of the observation groove (33) is provided with a transparent glass plate (331).
4. A more accurate tank level measurement system according to claim 3 wherein: atmospheric pressure detecting tube (12) and the equal fixed connection of low pressure mouth of pipe (22) are located observation groove (33) top department in collection tank (3), be provided with between collection tank (3) and low pressure mouth of pipe (22) and detain pipe (32) with buckling that fluid is detained, buckle and detain pipe (32) one end connect with collection tank (3), the other end is connected in low pressure mouth of pipe (22).
5. A more accurate tank level measurement system according to claim 4 wherein: and an arc-shaped oil blocking pipe (121) is arranged at one end of the air pressure detection pipe (12) far away from the low-pressure pipe orifice (22).
6. A more accurate tank level measurement system according to claim 1 wherein: the storage tank is characterized in that a visual liquid level meter (4) is arranged on one end side wall, away from the detection pipeline (11), of the storage tank body (1), a liquid discharging pipe (42) communicated with the storage tank body (1) is arranged at the bottom end of the visual liquid level meter (4), and a liquid feeding pipe (41) communicated with the storage tank body (1) is arranged at the top end of the visual liquid level meter (4).
7. A more accurate tank level measurement system according to claim 6 wherein: and the upper liquid pipe (41) and the lower liquid pipe (42) are both provided with an isolation valve (43).
8. A more accurate tank level measurement system according to claim 1 wherein: and a five-valve group (23) is fixed on the high-pressure nozzle (21) and the low-pressure nozzle (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827907.XU CN210741609U (en) | 2019-10-29 | 2019-10-29 | Storage tank liquid level measurement system with more accurate measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827907.XU CN210741609U (en) | 2019-10-29 | 2019-10-29 | Storage tank liquid level measurement system with more accurate measurement |
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| CN210741609U true CN210741609U (en) | 2020-06-12 |
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| CN201921827907.XU Active CN210741609U (en) | 2019-10-29 | 2019-10-29 | Storage tank liquid level measurement system with more accurate measurement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390486A (en) * | 2021-06-10 | 2021-09-14 | 浙江志高机械股份有限公司 | Device for testing oil level of multiple fuel tanks of automatic drilling machine |
-
2019
- 2019-10-29 CN CN201921827907.XU patent/CN210741609U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390486A (en) * | 2021-06-10 | 2021-09-14 | 浙江志高机械股份有限公司 | Device for testing oil level of multiple fuel tanks of automatic drilling machine |
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