CN211602094U - Decay pond liquid level measurement system - Google Patents
Decay pond liquid level measurement system Download PDFInfo
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- CN211602094U CN211602094U CN201922106008.7U CN201922106008U CN211602094U CN 211602094 U CN211602094 U CN 211602094U CN 201922106008 U CN201922106008 U CN 201922106008U CN 211602094 U CN211602094 U CN 211602094U
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Abstract
The utility model discloses a decay pond liquid level measurement system, including setting firmly on the decay pond and can carry out non-contact measurement's radar level gauge to the waste liquid level in this decay pond, the radar level gauge is connected with the PLC controller. The utility model has the advantages that: the radar is used for realizing the non-contact measurement of the liquid level, the problems that the floating ball detector is easy to damage and troublesome to replace are effectively solved, the service life is long, the maintenance-free period is long, and the cost is reduced in the long run; the liquid level data that can will measure reach office or control room far away, but long-range real-time supervision liquid level state is favorable to the managers to master relevant condition in real time, and is more convenient, more safe and reliable.
Description
Technical Field
The utility model relates to a technical field of decay pond particularly, relates to a decay pond liquid level measurement system.
Background
Along with the more and more extensive nuclear medicine application, the country pays more and more attention to the environmental protection, the environmental protection department has more and more strict requirements on radioactive waste liquid discharge, the radioactive waste liquid must be correspondingly treated and then discharged, the decay tank is generated under the background, the traditional discharge is not treated and is directly discharged into the environment, radioactive hazards are generated to the natural environment and human beings, the decay tank can store the radioactive waste liquid so as to reduce the radioactivity of the waste water through a storage decay method, and when the radiation attenuation is not enough to form the hazards within a certain time, the waste liquid is safely discharged.
When the waste liquid is stored in the decay pond, the liquid level of waste liquid needs to be surveyed, and traditional mode is that the high-low liquid level float detector of installation in the decay pond closes the feed liquor valve when the waste liquid reaches the floater position, carries out the decay timing, discharges the waste liquid after the timing, nevertheless because the float detector is the contact detection, dregs are more in the waste liquid, lead to the floater malfunctioning easily, and can receive the radiation when changing.
In addition, the liquid level of the waste liquid can be observed only on site in the traditional mode, and remote monitoring can not be carried out in places such as offices and the like.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a decay pond level measurement system, accessible radar level gauge realize non-contact measurement, safe and reliable, easy maintenance can realize remote monitoring's purpose.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
the utility model provides a decay pond level measurement system, is including setting firmly on the decay pond and can carry out non-contact measuring's radar level gauge to the waste liquid level in this decay pond, the radar level gauge is connected with the PLC controller.
Further, the decay pond includes the cell body, the top of cell body is provided with the feed liquor pipe, the bottom of cell body is provided with the fluid-discharge tube, the feed liquor pipe with all be provided with the valve on the fluid-discharge tube.
Further, the top of cell body still is provided with vertical liquid level detection pipe, liquid level detection pipe fixed connection the radar level gauge, the radar level gauge is located the liquid level top of waste liquid.
Furthermore, the PLC controller is respectively connected with a touch screen and an upper computer through a gateway, and the upper computer is located in an office or a control room.
Furthermore, the PLC controller is respectively connected with a power supply and an audible and visual alarm.
Furthermore, the radar liquid level meter is connected with the PLC through a signal transmission shielding cable, and the current value range of signals transmitted in the signal transmission shielding cable is 4-20 mA.
Further, the model of the PLC controller is Simens S7200 smart.
The utility model has the advantages that: the radar is used for realizing the non-contact measurement of the liquid level, the problems that the floating ball detector is easy to damage and troublesome to replace are effectively solved, the service life is long, the maintenance-free period is long, and the cost is reduced in the long run; the liquid level data that can will measure reach office or control room far away, but long-range real-time supervision liquid level state is favorable to the managers to master relevant condition in real time, and is more convenient, more safe and reliable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a decay tank level measurement system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a decay tank level measurement system according to an embodiment of the present invention.
In the figure:
1. a radar level gauge; 2. a signal transmission shielded cable; 3. a PLC controller; 4. a decay tank; 5. waste liquor; 6. a liquid inlet pipe; 7. a liquid discharge pipe; 8. and (4) a valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in FIGS. 1-2, according to the embodiment of the utility model provides a decay pond level measurement system, including setting firmly on decay pond 4 and can carry out non-contact measurement's radar level gauge 1 to the 5 liquid levels of waste liquid in this decay pond 4, radar level gauge 1 is connected with PLC controller 3.
In a specific embodiment of the present invention, the decay tank 4 includes a tank body, the top of the tank body is provided with a liquid inlet pipe 6, the bottom of the tank body is provided with a liquid outlet pipe 7, and the liquid inlet pipe 6 and the liquid outlet pipe 7 are all provided with a valve 8.
In a specific embodiment of the utility model, the top of cell body still is provided with vertical liquid level detection pipe, liquid level detection pipe fixed connection radar level gauge 1, radar level gauge 1 is located the liquid level top of waste liquid 5.
In an embodiment of the present invention, the PLC controller 3 is connected to the touch screen and the upper computer through the gateway, and the upper computer is located in the office or the control room.
In a specific embodiment of the present invention, the PLC controller 3 is connected to a power supply and an audible and visual alarm, respectively.
In a specific embodiment of the utility model, radar level gauge 1 passes through signal transmission shielded cable 2 and connects PLC controller 3, the current value scope of the signal of transmission is 4~20mA in the signal transmission shielded cable 2.
In a specific embodiment of the present invention, the PLC controller 3 is a Simens S7200 smart.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
Decay pond liquid level measurement system include radar level gauge 1, PLC controller 3, host computer, power and audible-visual annunciator etc..
The model of radar level gauge 1 can be ZLIDIGI-DB, the liquid level top of waste liquid 5 in decay pond 4 is fixed to radar level gauge 1, radar level gauge 1 adopts "overlooking formula" measurement mode based on travel time principle (ToF), distance between measurement reference point (process connection) to medium surface (being the liquid level), antenna transmission radar pulse signal, radar pulse signal takes place to become radar pulse reflection signal after the transmission at the medium surface, radar pulse reflection signal is received by the antenna.
The antenna receives the radar pulse reflection signal and transmits the radar pulse reflection signal to a microprocessor in the radar level gauge 1. And the microprocessor analyzes the signals, identifies the real reflection echo of the radar pulse reflection signal on the surface of the medium and sends the real reflection echo to the PLC 3. The PLC 3 calculates the liquid level by a formula. The formula is specifically that the distance (D) to the surface of the medium is proportional to the running time (t) of the pulse signal: d = c · t/2, where c is the speed of light. When the altitude (E) of the air mark is known, the calculation formula of the liquid level (L) is as follows: l = E-D.
When the radar liquid level meter 1 is debugged, the empty scale distance E (zero point), the full scale distance F (full scale) and application parameters need to be input, and the radar liquid level meter 1 automatically adapts to process conditions. Factory setting values of a zero point (E) and a full scale (F) of the current output type radar liquid level meter 1 are respectively 4 mA and 20 mA; factory set values of the zero point (E) and the full scale (F) of the digital quantity output type radar level gauge 1 are 0% and 100%, respectively. The linearization tables (containing up to 32 parameter pairs) may be entered manually or semi-automatically, and the linearization function of the radar level gauge 1 may be activated by field operation or remote operation. The linearization function can provide measurements of other engineering units and can provide linear output signals of the spherical tank, the horizontal tank and the tank body with the conical discharge hole.
The PLC 3 is in a Simens S7200smart model, the PLC 3 is connected with a gateway and an audible and visual alarm, and the audible and visual alarm is in a CB1-610R model. The gateway passes through the net twine and connects touch-sensitive screen and host computer, and PLC controller 3 is used for showing the liquid level data that radar level gauge 1 measured and teletransmission to the host computer in office or the control room through the touch-sensitive screen, and managers' accessible host computer is to the real-time remote monitoring of liquid level. The touch screen is model TPC1061 Ti.
When the liquid level meter is used specifically, a radar pulse reflection signal is converted into a linear signal of 4-20 mA by the radar liquid level meter 1 and then is transmitted to the PLC controller 3 through the signal transmission shielded cable 2, and the PLC controller 3 receives the linear signal and converts the linear signal into a liquid level numerical value; the touch screen reads the liquid level value in real time through the gateway and displays the liquid level value on site; the upper computer can read the liquid level value in real time and display the liquid level value in an office or a control room.
To sum up, with the help of the technical scheme of the utility model, can use the radar to realize the non-contact measurement of liquid level, radar level gauge transmission radar pulse signal, radar pulse signal takes place the transmission at the medium surface, radar pulse reflection signal is received by radar level gauge to realize the non-contact measurement of liquid level; the gateway and the upper computer are added, the upper computer can use a network cable to communicate with the PLC, and a signal of the liquid level measured by the radar is transmitted to an office or a control room, so that remote monitoring is realized.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a decay pond level measurement system, its characterized in that is including setting firmly on decay pond (4) and can carry out non-contact measurement's radar level gauge (1) to waste liquid (5) liquid level in this decay pond (4), radar level gauge (1) are connected with PLC controller (3).
2. A decay tank liquid level measurement system according to claim 1, characterized in that the decay tank (4) comprises a tank body, a liquid inlet pipe (6) is arranged at the top of the tank body, a liquid outlet pipe (7) is arranged at the bottom of the tank body, and valves (8) are arranged on both the liquid inlet pipe (6) and the liquid outlet pipe (7).
3. A decay tank liquid level measurement system according to claim 2, characterized in that the top of the tank body is further provided with a vertical liquid level detection tube fixedly connected with the radar level gauge (1), the radar level gauge (1) being located above the liquid level of the waste liquid (5).
4. The decay tank liquid level measurement system of claim 1, wherein the PLC controller (3) is connected with a touch screen and an upper computer through gateways respectively, and the upper computer is located in an office or a control room.
5. A decay tank level measurement system according to claim 1, characterized in that the PLC controller (3) is connected with a power supply and an audible and visual alarm, respectively.
6. The decay tank liquid level measurement system according to claim 1, wherein the radar liquid level meter (1) is connected with the PLC controller (3) through a signal transmission shielded cable (2), and the current value of the signal transmitted in the signal transmission shielded cable (2) ranges from 4 mA to 20 mA.
7. Decay tank level measurement system according to claim 1, characterized in that the PLC controller (3) is of the type Simens S7200 smart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922106008.7U CN211602094U (en) | 2019-11-29 | 2019-11-29 | Decay pond liquid level measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922106008.7U CN211602094U (en) | 2019-11-29 | 2019-11-29 | Decay pond liquid level measurement system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211602094U true CN211602094U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922106008.7U Active CN211602094U (en) | 2019-11-29 | 2019-11-29 | Decay pond liquid level measurement system |
Country Status (1)
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|---|---|
| CN (1) | CN211602094U (en) |
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2019
- 2019-11-29 CN CN201922106008.7U patent/CN211602094U/en active Active
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