CN116754043B - Laboratory is with input type liquid level transmitter installation device - Google Patents
Laboratory is with input type liquid level transmitter installation device Download PDFInfo
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- CN116754043B CN116754043B CN202311040466.XA CN202311040466A CN116754043B CN 116754043 B CN116754043 B CN 116754043B CN 202311040466 A CN202311040466 A CN 202311040466A CN 116754043 B CN116754043 B CN 116754043B
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- water storage
- liquid level
- storage structure
- type liquid
- level transmitter
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- 239000007788 liquid Substances 0.000 title claims abstract description 62
- 238000009434 installation Methods 0.000 title claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 238000005259 measurement Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000001960 triggered effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a laboratory input type liquid level transmitter mounting device, which relates to the technical field of liquid level transmitters and comprises a measurement and control system cabinet, a water storage structure, a driving structure, a rotating shaft, a plurality of traction ropes and a plurality of input type liquid level transmitters, wherein the water storage structure is used for containing water, each input type liquid level transmitter is positioned in the water storage structure, one end of each traction rope is connected with each input type liquid level transmitter, the other end of each traction rope is connected with the rotating shaft, the driving structure drives the rotating shaft to rotate, the traction ropes are wound on the rotating shaft, and the measurement and control system cabinet is respectively electrically connected with the driving structure and the input type liquid level transmitters. According to the invention, the testing of different liquid levels is realized by changing the height of the pressure sensor in water, so that the overall testing efficiency and the degree of automation are improved.
Description
Technical Field
The invention relates to the technical field of liquid level transmitters, in particular to a device for installing a laboratory input type liquid level transmitter.
Background
The input type liquid level transmitter has wide application in industrial automation sites, especially in the industries of chemical industry, water treatment, heat supply and the like, and the requirements on the performance and the stability of the input type liquid level transmitter are higher and higher for improving the automation degree of the whole process control, so that the input type liquid level transmitter is more and more important to fully test and examine in a laboratory.
Disclosure of Invention
The invention aims to provide a laboratory input type liquid level transmitter installation device, which realizes the testing of different liquid levels by changing the height of a pressure sensor in water and improves the overall testing efficiency.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a laboratory input type liquid level transmitter mounting device which comprises a measurement and control system cabinet, a water storage structure, a driving structure, a rotating shaft, a plurality of traction ropes and a plurality of input type liquid level transmitters, wherein the water storage structure is used for containing water, each input type liquid level transmitter is positioned in the water storage structure, one end of each traction rope is connected with each input type liquid level transmitter, the other end of each traction rope is connected with the rotating shaft, the driving structure drives the rotating shaft to rotate, the traction ropes are wound on the rotating shaft, and the measurement and control system cabinet is respectively and electrically connected with the driving structure and the input type liquid level transmitters.
Preferably, the water storage structure is made of glass fiber reinforced plastic, the water storage structure is a cuboid tank body, an opening is formed in the top of the water storage structure, and each input type liquid level transmitter enters the water storage structure through the opening.
Preferably, an anti-surge plate is arranged in the water storage structure, so that the influence of liquid level shaking on the liquid level measurement precision can be reduced.
Preferably, the water storage structure is provided with a height scale, the water storage structure is evenly provided with a plurality of infrared sensors along the height direction of the water storage structure, so that the accuracy of the input type liquid level transmitter when the pressure sensor is triggered when the pressure sensor is stably lifted or lowered to reach each height is ensured, the infrared sensors are electrically connected with the measurement and control system cabinet, and the switch value signals are fed back to the measurement and control system cabinet when the infrared sensors are triggered.
Preferably, the device further comprises a plurality of supporting structures, the supporting structures respectively correspond to the traction ropes, each supporting structure comprises a supporting frame and two fixed pulleys, the supporting frames are arranged on the water storage structure, the two fixed pulleys are arranged on the supporting frames, the heights of the two fixed pulleys are identical, the traction ropes sequentially bypass the two fixed pulleys of the corresponding supporting structures, one fixed pulley is located above the inner side of the water storage structure, the other fixed pulley is located above the outer side of the water storage structure, the traction ropes sequentially bypass the two fixed pulleys of the corresponding supporting structures, and the arrangement of the supporting structures ensures that the traction ropes and the input type liquid level transmitter are not contacted with the water storage structure.
Preferably, in the initial state, the pressure sensor of each input liquid level transmitter is located at the lowest position of the water storage structure.
Preferably, the number of the driving structures is two, a first sprocket is arranged at the power output end of each driving structure, second sprockets are respectively arranged at the two ends of the rotating shaft, and the first sprockets are respectively connected with the second sprockets in a transmission manner through chains.
Preferably, a tension sensor is arranged on the haulage rope, the tension sensor is arranged close to the other end of the haulage rope, and the tension sensor is electrically connected with the measurement and control system cabinet.
Compared with the prior art, the invention has the following technical effects:
in order to realize measurement of different liquid levels, the invention does not change the actual liquid level, but changes the height of the pressure sensor in water by using a servo control mode to realize the test of different liquid levels, thereby improving the overall test efficiency and the automation degree.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an isometric view of a laboratory drop-in level transmitter mounting apparatus of the present invention;
FIG. 2 is a side view of the laboratory drop-in level transmitter mounting apparatus of the present invention;
FIG. 3 is a schematic diagram of the tension sensor measurement principle of the present invention;
FIG. 4 is a schematic diagram of a control system according to the present invention;
wherein: 1-measurement and control system cabinet, 2-water storage structure, 3-driving structure, 4-axis of rotation, 5-haulage rope, 6-support frame, 7-fixed pulley, 8-man-machine interface industry panel computer, 9-first sprocket, 10-second sprocket, 11-unable adjustment base, 12-tension sensor.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.
The invention aims to provide a laboratory input type liquid level transmitter installation device, which realizes the testing of different liquid levels by changing the height of a pressure sensor in water and improves the overall testing efficiency.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1 to 4: the embodiment provides a laboratory is with throwing type liquid level transmitter installation device for simulate the throwing type liquid level transmitter in the industrial field use in laboratory, including observing and controlling system cabinet 1, water storage structure 2, driving structure 3, axis of rotation 4, a plurality of haulage ropes 5 and a plurality of throwing type liquid level transmitter, be arranged in holding water in the water storage structure 2, each throwing type liquid level transmitter is arranged in water storage structure 2, each haulage rope 5's one end is connected with throwing type liquid level transmitter, each haulage rope 5's the other end is connected with axis of rotation 4, driving structure 3 drives axis of rotation 4 and rotates, and then haulage rope 5 twines on axis of rotation 4, observing and controlling system cabinet 1 is connected with driving structure 3 and throwing type liquid level transmitter electricity respectively.
Specifically, in this embodiment, in the initial state, the pressure sensor of each input level transducer is located at the lowest position of the water storage structure 2.
In the embodiment, in order to intuitively see the specific change of the liquid level, the water storage structure 2 is made of glass fiber reinforced plastic, the water storage structure 2 is a cuboid tank body, an opening is formed in the top of the water storage structure 2, each input type liquid level transmitter enters the water storage structure 2 from the opening, and a height scale is arranged on the water storage structure 2; in order to ensure measurement accuracy, a plurality of infrared sensors are uniformly arranged on the water storage structure 2 along the height direction of the water storage structure 2, and preferably, one infrared sensor is arranged at intervals of 200mm so as to ensure accuracy when the pressure sensor triggers the infrared sensor to reach each height when stably ascending or descending, the infrared sensor is electrically connected with the measurement and control system cabinet 1, and a switching value signal is fed back to the measurement and control system cabinet 1 when the infrared sensor is triggered.
In this embodiment, be provided with in the water storage structure 2 and prevent the surge board, reducible liquid level rocks the influence to liquid level measurement accuracy.
Still include a plurality of bearing structures in this embodiment, bearing structure corresponds with haulage rope 5 respectively, bearing structure includes support frame 6 and two fixed pulleys 7, support frame 6 sets up on water storage structure 2, support frame 6 includes the support that two symmetries set up, each support personally submits 45 angles with the vertical, two fixed pulleys 7 set up on the support respectively, the height of two fixed pulleys 7 is the same, one of them fixed pulley 7 is located the inboard top of water storage structure 2, another fixed pulley 7 is located the top in the water storage structure 2 outside, haulage rope 5 walks around the recess of two fixed pulleys 7 of corresponding bearing structure in proper order, bearing structure's setting ensures haulage rope 5 and input type level transmitter all do not contact with water storage structure 2.
In this embodiment, each haulage rope 5, the corresponding support structure, and the corresponding drop-in level transmitter are all located on the same vertical plane.
In the embodiment, the driving structure 3 and the rotating shaft 4 are both arranged on the fixed base 11, and the rotating shaft 4 passes through a bearing seat on the fixed base 11; the driving structure 3 is preferably a servo motor, the number of the driving structures 3 is two, the power output end of each driving structure 3 is provided with a first chain wheel 9, the two ends of the rotating shaft 4 are respectively provided with a second chain wheel 10, and the first chain wheels 9 are respectively connected with the second chain wheels 10 in a transmission way through chains.
In this embodiment, the measurement and control system cabinet 1 is further provided with a human-computer interface industrial tablet computer 8, the measurement and control system cabinet 1 is further provided with a servo driver and a programmable controller analog input module, the servo driver is electrically connected with the driving structure 3, the servo driver is used for controlling the driving structure 3, the programmable controller analog input module is electrically connected with the input type liquid level transmitter, and the programmable controller analog input module is electrically connected with the input type liquid level transmitter.
In this embodiment, the haulage rope 5 may be a steel cable, the haulage rope 5 is provided with a tension sensor 12, the tension sensor 12 is disposed near the other end of the haulage rope 5, and the tension sensor 12 is electrically connected with the measurement and control system cabinet 1.
The servo driver in the measurement and control system cabinet 1 controls the driving structure 3 to rotate the rotating shaft 4 through operating the control program in the human-computer interface industrial tablet personal computer 8, so that the height of the pressure sensor in the water storage structure 2 is changed through driving the hauling ropes 5, tension can be generated along the traction direction of each hauling rope 5, the tension value is obtained through measurement by the tension sensor 12 on each hauling rope 5, the tension signal is transmitted to the measurement and control system cabinet 1 by the tension sensor 12, and then analysis and storage are performed, so that the rotation speed of the rotating shaft 4 can be controlled. The tension B is measured by the tension sensor 12, the force measured by the tension sensor 12 depends on the tension of the traction rope 5 and deflection angles alpha and beta, and the deformation of the tension measuring roller is ignored, so that the following calculation formula is obtained: horizontal force direction: fhmeasure=b (cos α -cos β), perpendicular force direction: fvmeasure=b (sinα+sinβ).
When the laboratory is used, the laboratory is filled with clean water by the input type liquid level transmitter installation device, the water storage structure 2 is filled with clean water, the supporting structure is installed at the top of the water storage structure 2, the input type liquid level transmitter is connected with one end of the traction rope 5, the pressure sensor of the input type liquid level transmitter is placed at the lowest position of the water storage structure 2, the fixing base 11 is installed beside the water storage structure 2, the test system cabinet is installed beside the fixing base 11, all the structures are driven to be connected with the public end of the rotating shaft 4 in a correct installation mode, and all the traction ropes 5 bypass the fixed pulleys 7 on the corresponding supporting structure and the other ends of all the traction ropes 5 are connected to the rotating shaft 4. Each input type liquid level transmitter is connected with a stabilized voltage power supply, and provides power for the input type liquid level transmitter, a signal port of each input type liquid level transmitter is connected with each programmable controller analog input module of the measurement and control system cabinet 1, a human-computer interface industrial tablet personal computer 8 is operated, a servo driver in the measurement and control system cabinet 1 controls a driving structure 3 to enable a rotating shaft 4 to rotate, and accordingly the height of a pressure sensor of the input type liquid level transmitter in a water storage structure 2 is changed by driving each traction rope 5, a real-time test result is transmitted to the measurement and control system cabinet 1, and further analysis, calculation and storage are carried out in a software platform.
In this embodiment, in order to realize measurement of different liquid levels, the actual liquid level is not changed, but the height of the pressure sensor in water is changed by using a servo control mode to realize measurement of different liquid levels, so that the overall test efficiency and the automation degree are improved.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. Laboratory is with input type liquid level transmitter installation device, its characterized in that: the system comprises a measurement and control system cabinet, a water storage structure, a driving structure, a rotating shaft, a plurality of haulage ropes and a plurality of input type liquid level transmitters, wherein the water storage structure is used for containing water, each input type liquid level transmitter is positioned in the water storage structure, one end of each haulage rope is connected with each input type liquid level transmitter, the other end of each haulage rope is connected with the rotating shaft, the driving structure drives the rotating shaft to rotate, the haulage ropes are wound on the rotating shaft, and the measurement and control system cabinet is respectively and electrically connected with the driving structure and the input type liquid level transmitters;
the water storage structure is provided with a height scale, a plurality of infrared sensors are uniformly arranged on the water storage structure along the height direction of the water storage structure so as to ensure the accuracy of triggering the infrared sensors to reach each height when the pressure sensing sensors of the input type liquid level transmitter stably ascend or descend, and the infrared sensors are electrically connected with the measurement and control system cabinet;
the traction rope is provided with a tension sensor, the tension sensor is close to the other end of the traction rope and is electrically connected with the measurement and control system cabinet, a servo driver in the measurement and control system cabinet controls the driving structure to enable the rotating shaft to rotate, so that the height of the pressure sensor in the water storage structure changes through driving the traction rope, tension can be generated in the traction direction of each traction rope, the tension sensor on the traction rope measures a tension value, tension signals are transmitted to the measurement and control system cabinet, and then analysis and storage are carried out, so that the rotation speed of the rotating shaft is controlled.
2. The laboratory drop-in level transmitter mounting apparatus of claim 1, wherein: the water storage structure is made of glass fiber reinforced plastic, the water storage structure is a cuboid tank body, an opening is formed in the top of the water storage structure, and each input type liquid level transmitter enters the water storage structure through the opening.
3. The laboratory drop-in level transmitter mounting apparatus of claim 1, wherein: an anti-surge plate is arranged in the water storage structure.
4. The laboratory drop-in level transmitter mounting apparatus of claim 1, wherein: the traction rope is characterized by further comprising a plurality of supporting structures, the supporting structures respectively correspond to the traction ropes, each supporting structure comprises a supporting frame and two fixed pulleys, the supporting frames are arranged on the water storage structure, the two fixed pulleys are arranged on the supporting frames, the heights of the two fixed pulleys are the same, and the traction ropes sequentially bypass the two fixed pulleys of the corresponding supporting structures.
5. The laboratory drop-in level transmitter mounting apparatus of claim 1, wherein: in the initial state, the pressure sensor of each input type liquid level transmitter is positioned at the lowest position of the water storage structure.
6. The laboratory drop-in level transmitter mounting apparatus of claim 1, wherein: the two driving structures are arranged, a first sprocket is arranged at the power output end of each driving structure, a second sprocket is arranged at the two ends of the rotating shaft respectively, and the first sprockets are in transmission connection with the second sprockets respectively through chains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311040466.XA CN116754043B (en) | 2023-08-18 | 2023-08-18 | Laboratory is with input type liquid level transmitter installation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311040466.XA CN116754043B (en) | 2023-08-18 | 2023-08-18 | Laboratory is with input type liquid level transmitter installation device |
Publications (2)
| Publication Number | Publication Date |
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| CN116754043A CN116754043A (en) | 2023-09-15 |
| CN116754043B true CN116754043B (en) | 2023-10-31 |
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| CN202311040466.XA Active CN116754043B (en) | 2023-08-18 | 2023-08-18 | Laboratory is with input type liquid level transmitter installation device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100753774B1 (en) * | 2007-06-18 | 2007-08-30 | 한국수자원공사 | Standard calibration device and method of water level meter |
| CN202255559U (en) * | 2011-09-19 | 2012-05-30 | 昆明理工大学 | Liquid level detection device of high-corrosiveness liquid storage tank |
| CN103292877A (en) * | 2013-06-21 | 2013-09-11 | 山东康威通信技术股份有限公司 | On-line testing method and device for throw-in type liquid level transmitter |
| CN206740218U (en) * | 2017-06-01 | 2017-12-12 | 李永峰 | A kind of liquid level gauge calibrating installation |
| EP3392624A1 (en) * | 2017-04-18 | 2018-10-24 | VEGA Grieshaber KG | Tensioning weight for a level measurement device for measuring the fill level in a container and fill level measurement device with such a tensioning weight |
| CN209745361U (en) * | 2019-06-13 | 2019-12-06 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Water pumping test data acquisition device |
| CN212482627U (en) * | 2020-07-07 | 2021-02-05 | 中交二公局第三工程有限公司 | Water-rich area ground water level monitoring devices |
| CN114111974A (en) * | 2021-11-01 | 2022-03-01 | 中国航空工业集团公司北京长城计量测试技术研究所 | Horizontal level gauge detects calibrating device |
| CN217716588U (en) * | 2022-06-07 | 2022-11-01 | 西安西自仪检测技术有限公司 | Novel level gauge is examined and determine device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6703635B2 (en) * | 2000-09-18 | 2004-03-09 | Ntt Advanced Technology Corporation | Method and apparatus for measuring the level of liquid using optical fiber strain gauge |
| US20170030763A1 (en) * | 2015-07-27 | 2017-02-02 | Fei-Che Hung | Testing method for float liquid level transmitter |
-
2023
- 2023-08-18 CN CN202311040466.XA patent/CN116754043B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100753774B1 (en) * | 2007-06-18 | 2007-08-30 | 한국수자원공사 | Standard calibration device and method of water level meter |
| CN202255559U (en) * | 2011-09-19 | 2012-05-30 | 昆明理工大学 | Liquid level detection device of high-corrosiveness liquid storage tank |
| CN103292877A (en) * | 2013-06-21 | 2013-09-11 | 山东康威通信技术股份有限公司 | On-line testing method and device for throw-in type liquid level transmitter |
| EP3392624A1 (en) * | 2017-04-18 | 2018-10-24 | VEGA Grieshaber KG | Tensioning weight for a level measurement device for measuring the fill level in a container and fill level measurement device with such a tensioning weight |
| CN206740218U (en) * | 2017-06-01 | 2017-12-12 | 李永峰 | A kind of liquid level gauge calibrating installation |
| CN209745361U (en) * | 2019-06-13 | 2019-12-06 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Water pumping test data acquisition device |
| CN212482627U (en) * | 2020-07-07 | 2021-02-05 | 中交二公局第三工程有限公司 | Water-rich area ground water level monitoring devices |
| CN114111974A (en) * | 2021-11-01 | 2022-03-01 | 中国航空工业集团公司北京长城计量测试技术研究所 | Horizontal level gauge detects calibrating device |
| CN217716588U (en) * | 2022-06-07 | 2022-11-01 | 西安西自仪检测技术有限公司 | Novel level gauge is examined and determine device |
Non-Patent Citations (2)
| Title |
|---|
| Sayyed Faizan Ali ; Nirupama Mandal ; Praveen Maurya ; Anamika Lata.SAW Sensor based a Novel Hydrostatic Liquid Level Measurement.《IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society》.2020, * |
| 钻孔桩砼灌面超声波测量的关键技术及其实现;兰凯;《中国博士学位论文全文数据库 (工程科技Ⅱ辑)》;C038-8 * |
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