CN219383636U - Dangerous waste liquid level monitoring device - Google Patents
Dangerous waste liquid level monitoring device Download PDFInfo
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- CN219383636U CN219383636U CN202320080983.9U CN202320080983U CN219383636U CN 219383636 U CN219383636 U CN 219383636U CN 202320080983 U CN202320080983 U CN 202320080983U CN 219383636 U CN219383636 U CN 219383636U
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- storage tank
- displacement sensor
- type displacement
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- floating ball
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Abstract
The utility model relates to a dangerous waste liquid level monitoring device which comprises a floating ball, a pull wire, a fixed pulley block, a pull rope type displacement sensor and a PLC analog quantity system, wherein the floating ball is placed in a storage tank and floats on the surface of liquid in the storage tank, one end of the pull wire is connected with the floating ball, the other end of the pull wire penetrates through a flange opening of the storage tank, the pull wire is ensured to be smooth and fixed during pulling through the fixed pulley block, then the pull wire is connected with the pull rope of the pull rope type displacement sensor, the fixed pulley block is fixed at the top edge of the storage tank and is close to the flange opening of the storage tank, the pull rope type displacement sensor is fixed on the ground near the side of the storage tank, and the rope opening of the pull rope type displacement sensor faces upwards, and is electrically connected with the PLC analog quantity system. The dangerous waste liquid level monitoring device has the advantages of simple structure, low cost, corrosion resistance, stable operation, low maintenance cost, strong practicability and the like.
Description
[ field of technology ]
The utility model relates to monitoring equipment for dangerous waste liquid level, in particular to liquid level monitoring equipment for a strong acid and alkali liquid dangerous waste storage tank, and particularly relates to liquid level monitoring equipment for a cuprammonium solution and cupric chloride storage tank.
[ background Art ]
At present, the visual liquid level monitoring of the domestic liquid dangerous waste storage tanks such as cuprammonia, cupric chloride and the like always adopts an expensive ultrasonic liquid level meter, a radar liquid level meter or a throw-in differential pressure liquid level meter and the like. Ultrasonic wave level gauge and radar level gauge not only are expensive, face volatile high corrosive gas and the environment that the liquid surface reacted out foam easily moreover, and the surface is uneven can lead to the reading unstable, and undulant big, ultrasonic wave level gauge and radar level gauge damage easily and lead to out of control. The input differential pressure liquid level meter has great error due to the density change of incoming materials, can not meet the real and reliable data requirement of industrial monitoring, is in contact with highly corrosive liquid frequently, is extremely easy to damage and has higher maintenance cost. Most dangerous waste storage tank areas adopt pulley scales due to unreliability of electronic instruments, so that the manual visual inspection method leads to great increase of labor cost of enterprises, and environmental protection accidents such as tank filling and overflowing are extremely easy to occur.
[ utility model ]
The utility model aims to solve the technical problems of avoiding the defects of the prior art and providing the dangerous waste liquid level monitoring device which has the advantages of simple structure, low cost, corrosion resistance, stable operation, low maintenance cost, strong practicability and the like.
The technical scheme adopted for solving the technical problems is as follows:
providing a hazardous waste liquid level monitoring device for monitoring the liquid level of a storage tank filled with corrosive liquid hazardous waste in real time; the dangerous waste liquid level monitoring device comprises a floating ball made of acid and alkali resistant materials, a pull wire made of acid and alkali resistant materials, a fixed pulley block, a pull rope type displacement sensor and a PLC analog quantity system; the floating ball is placed in the storage tank and floats on the surface of liquid in the storage tank due to self buoyancy; one end of the stay wire is connected with the floating ball, the other end of the stay wire passes through a flange opening of the storage tank, the smooth and fixed state during pulling is ensured through the fixed pulley block, and then the stay wire is connected with a stay wire of the stay wire type displacement sensor; the fixed pulley block is fixed at the top edge of the storage tank and is close to a flange opening of the storage tank; the stay rope type displacement sensor is fixed on the ground near the side of the storage tank, and a rope opening of a stay rope of the stay rope type displacement sensor faces upwards; the pull rope type displacement sensor is electrically connected with the PLC analog system, and the PLC analog system can convert signals transmitted by the pull rope type displacement sensor into liquid level data displayed in real time.
The floating ball is a fully-closed hollow body, and a certain counterweight is arranged in the floating ball, so that the floating ball can float on the surface of liquid in the storage tank and is not too light.
The pull rope type displacement sensor can transmit 4-20 mA standard signals, the linear precision of the pull rope type displacement sensor is +/-0.15%, and the repeatability precision is +/-0.02%.
The PLC analog quantity system is provided with a high liquid level alarm module, and alarms when the liquid level of the liquid in the storage tank is higher than an early warning value.
Compared with the prior art, the dangerous waste liquid level monitoring device has the beneficial effects that:
1. the utility model adds a dangerous waste liquid level monitoring device on a storage tank, the dangerous waste liquid level monitoring device comprises a floating ball made of acid and alkali resistant materials, a pull wire made of acid and alkali resistant materials, a fixed pulley block, a pull rope type displacement sensor and a PLC analog system, the floating ball is lifted or lowered according to the liquid level change of the liquid surface in the storage tank, the pull wire is driven to displace on the fixed pulley block, the pull rope is connected with the pull rope of the pull rope type displacement sensor, the pull rope stretches together with the pull rope, the pull rope type displacement sensor converts the displacement change into a 4-20 mA standard signal according to the stretching of the pull rope and transmits the signal to the PLC analog system, and the liquid level condition is displayed in real time;
2. the parts which are easy to corrode in the dangerous waste liquid level monitoring device adopt anti-corrosion materials or corresponding measures, the stay rope type displacement sensor is not in direct contact with the dangerous liquid waste, the influence of corrosion is reduced, the service life of the whole device is long, the operation is stable, and the structure is simple;
3. the pull rope type displacement sensor in the dangerous waste liquid level monitoring device has high precision, can accurately record the displacement of the pull rope when the liquid level in the storage tank is not changed greatly, and ensures the accuracy of data;
4. the floating ball, the stay wire and the stay rope type displacement sensor in the dangerous waste liquid level monitoring device are simple and easy to obtain, the investment cost is low, the operation is stable, the dangerous waste liquid level monitoring device is damaged in time and is easy to replace, and maintenance is not required in the normal course.
In conclusion, the dangerous waste liquid level monitoring device has the advantages of simple structure, low cost, corrosion resistance, stable operation, low maintenance cost, strong practicability and the like.
[ description of the drawings ]
FIG. 1 is a simplified front view schematic of a front projection of a hazardous waste level monitoring device of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a hazardous waste level monitoring apparatus for real-time monitoring of the level of a tank 10 containing hazardous waste of corrosive liquids, particularly for real-time monitoring of the level of a tank 10 containing hazardous waste of highly corrosive liquids; the dangerous waste liquid level monitoring device comprises a floating ball 91 made of acid and alkali resistant materials, a pull wire 92 made of acid and alkali resistant materials, a fixed pulley block 93, a pull rope type displacement sensor 94 and a PLC analog quantity system 99; the floating ball 91 is placed in the storage tank 10, and the floating ball 91 floats on the surface of the liquid in the storage tank 10 due to self buoyancy; one end of the pull wire 92 is connected with the floating ball 91, the other end of the pull wire 92 passes through the flange opening 13 of the storage tank 10, the smooth and fixed during pulling are ensured through the fixed pulley block 93, and then the pull wire 92 is connected with a pull rope of the pull rope type displacement sensor 94; the fixed pulley block 93 is fixed at the top edge of the storage tank 10 and is close to the flange opening 13 of the storage tank 10; the pull-rope type displacement sensor 94 is fixed on the ground near the side of the storage tank 10, the rope opening of the pull rope of the pull-rope type displacement sensor 94 faces upwards, and the pull rope of the pull-rope type displacement sensor 94 and the rope opening are kept in a parallel state, so that the tolerance deviation is +/-3 degrees; the pull-cord type displacement sensor 94 is electrically connected with the PLC analog system 99, and the PLC analog system 99 can convert signals transmitted by the pull-cord type displacement sensor 94 into liquid level data displayed in real time.
The PLC analog system 99 includes a PLC programmable logic controller (not shown) and an HMI (not shown), i.e., a man-machine interface), and built-in configuration software can convert signals transmitted by the pull-string displacement sensor 94 into liquid level data that can be displayed in real time, and the PLC analog system 99 is easy for an electronic technician to implement and will not be described herein.
Referring to fig. 1, the floating ball 91 is a fully-closed hollow body, and has a certain weight inside, so that the floating ball 91 can float on the surface of the liquid in the storage tank 10 and is not too light. The floating ball 91 can be made of PP engineering plastic with acid and alkali resistance.
Referring to fig. 1, the pull wire 92 may be woven from 12 strands of ultra high molecular weight polyethylene fibers, such that the pull wire 92 may be referred to as a PE pull wire and is not susceptible to corrosion by the liquid within the tank 10.
Referring to fig. 1, the cross rod and the vertical rod of the fixed pulley block 93 can be made of glass fiber reinforced plastic, and the pulley is made of PP engineering plastic, so that corrosion is not easy to occur, and the fixed pulley block is durable.
Referring to fig. 1, the pull-rope type displacement sensor 94 can transmit a standard signal of 4-20 mA (milliamp), the linear precision of the pull-rope type displacement sensor 94 is +/-0.15%, and the repeatability precision is +/-0.02%; the pull cord of the pull cord type displacement sensor 94 can automatically retract under the condition of no external force.
Referring to fig. 1, the PLC analog system 99 is provided with a high liquid level alarm module, and when the liquid level of the liquid in the storage tank 10 is higher than the early warning value, the PLC analog system 99 alarms to reduce the risk of overflow of the liquid in the storage tank 10 when the liquid is full.
Referring to fig. 1, when a valve (not shown) on the water outlet pipe 12 of the tank 10 is closed, a water inlet pump (not shown) connected to the water inlet pipe 11 is turned on, and liquid flows from the water inlet pipe 11 into the tank 10; the liquid level in the storage tank 10 starts to rise, the floating ball 91 rises together with the rise of the liquid level, the stay wire 92 in the storage tank 10 vertically displaces upwards, the stay wire 92 on the fixed pulley block 93 horizontally displaces rightwards, and the stay wire 92 on the side edge of the storage tank 10 vertically displaces downwards; the pull rope of the pull rope type displacement sensor 94 connected with the pull rope 92 is contracted downwards, and the pull rope of the pull rope type displacement sensor 93 can be contracted automatically under the condition of no external force, so that the tension of the pull rope 92 during movement can be kept not to be loosened. The stay cord type displacement sensor 94 converts the change of the displacement of the stay cord into a 4-20 mA standard signal, and transmits the signal to the PLC analog quantity system 99 for processing and generating visual liquid level information, and the liquid level condition of the liquid in the storage tank 10 is displayed in real time.
Referring to fig. 1, a water outlet pump (not shown) connected to the water outlet pipe 12 is turned on, and the liquid in the storage tank 01 is discharged from the water outlet pipe 12; the liquid level in the storage tank 10 starts to descend, the floating ball 91 descends along with the descending of the liquid level, the stay wire 92 in the storage tank 10 vertically displaces downwards, the stay wire 92 on the fixed pulley block 93 horizontally displaces leftwards, and the stay wire 92 on the side edge of the storage tank 10 vertically displaces upwards; the pull rope of the pull rope type displacement sensor 94 connected with the pull rope 92 is pulled upwards, and the pull rope of the pull rope type displacement sensor 94 can automatically shrink under the condition of no external force, so that the tension of the pull rope 92 during movement can be kept not to be loosened. The stay cord type displacement sensor 94 converts the change of the displacement of the stay cord into a 4-20 mA standard signal, and transmits the signal to the PLC analog quantity system 99 for processing and generating visual liquid level information, and the liquid level condition of the liquid in the storage tank 10 is displayed in real time.
The above examples illustrate only preferred embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model, it being understood that variations and modifications can be made by those skilled in the art without departing from the spirit of the utility model, which fall within the scope of the utility model, and therefore all changes and modifications that come within the meaning and range of equivalency of the claims are intended to be embraced therein.
Claims (4)
1. A hazardous waste level monitoring device for real-time monitoring of the level of a tank (10) containing hazardous waste of corrosive liquids; the method is characterized in that:
the device comprises a floating ball (91) made of acid and alkali resistant materials, a pull wire (92) made of acid and alkali resistant materials, a fixed pulley block (93), a pull rope type displacement sensor (94) and a PLC analog system (99); the floating ball (91) is arranged in the storage tank (10), and the floating ball (91) floats on the surface of liquid in the storage tank (10) due to self buoyancy; one end of a pull wire (92) is connected with the floating ball (91), the other end of the pull wire (92) passes through a flange opening (13) of the storage tank (10), smooth and fixed during pulling are ensured through the fixed pulley block (93), and then the pull wire (92) is connected with a pull rope of the pull rope type displacement sensor (94); the fixed pulley block (93) is fixed at the top edge of the storage tank (10) and is close to a flange opening (13) of the storage tank (10); the stay rope type displacement sensor (94) is fixed on the ground near the side of the storage tank (10), a rope opening of a stay rope of the stay rope type displacement sensor (94) faces upwards, and the stay rope of the stay rope type displacement sensor (94) and the rope opening are kept in a parallel state, so that the tolerance deviation is +/-3 degrees; the pull-rope type displacement sensor (94) is electrically connected with the PLC analog system (99), and the PLC analog system (99) can convert signals transmitted by the pull-rope type displacement sensor (94) into liquid level data displayed in real time.
2. The hazardous waste level monitoring device of claim 1, wherein:
the floating ball (91) is a fully-closed hollow body, and a certain counterweight is arranged in the floating ball (91) to ensure that the floating ball (91) can float on the surface of liquid in the storage tank (10) and is not too light.
3. The hazardous waste level monitoring device of claim 1, wherein:
the stay cord type displacement sensor (94) can transmit 4-20 mA standard signals, the linear precision of the stay cord type displacement sensor (94) is +/-0.15%, and the repeatability precision is +/-0.02%.
4. A hazardous waste level monitoring device according to any one of claims 1 to 3, characterized in that:
the PLC analog quantity system (99) is provided with a high liquid level alarm module, and when the liquid level of the liquid in the storage tank (10) is higher than an early warning value, the PLC analog quantity system (99) alarms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080983.9U CN219383636U (en) | 2023-01-13 | 2023-01-13 | Dangerous waste liquid level monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320080983.9U CN219383636U (en) | 2023-01-13 | 2023-01-13 | Dangerous waste liquid level monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219383636U true CN219383636U (en) | 2023-07-21 |
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ID=87195792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320080983.9U Active CN219383636U (en) | 2023-01-13 | 2023-01-13 | Dangerous waste liquid level monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219383636U (en) |
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2023
- 2023-01-13 CN CN202320080983.9U patent/CN219383636U/en active Active
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