CN216386034U - Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant - Google Patents
Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant Download PDFInfo
- Publication number
- CN216386034U CN216386034U CN202122460514.3U CN202122460514U CN216386034U CN 216386034 U CN216386034 U CN 216386034U CN 202122460514 U CN202122460514 U CN 202122460514U CN 216386034 U CN216386034 U CN 216386034U
- Authority
- CN
- China
- Prior art keywords
- temperature
- monitoring device
- acquisition module
- processor
- wireless
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses a wireless temperature monitoring device for a drawer type low-voltage switch of a nuclear power plant, which comprises a plurality of temperature sensors, one or more acquisition modules, a processor and monitoring equipment, wherein the temperature sensors are provided with connecting pieces, the temperature sensors can be connected with the low-voltage switch in a fitting manner through the connecting pieces, the acquisition modules are used for acquiring detection data of the temperature sensors, the processor is used for receiving temperature data acquired by the acquisition modules and analyzing the temperature data, and the monitoring equipment is used for displaying an analysis result of the processor. The wireless temperature monitoring device for the drawer type low-voltage switch of the nuclear power plant can monitor the temperature in the drawer type switch on line in real time, and solves the problem that pain points are difficult to find due to abnormal temperature rise in the drawer type switch of the nuclear power plant.
Description
Technical Field
The utility model relates to the technical field of nuclear power plant electrical equipment state monitoring, in particular to a wireless temperature monitoring device for a drawer type low-voltage switch of a nuclear power plant.
Background
A large number of switchboard devices are arranged in the nuclear power plant. There are numerous drawer type low-voltage switchgear in the distribution board, and the overheated partial device that leads to of switchgear temperature exceeds rated temperature, may lead to switchgear unable normal work even burn out, and then leads to the unable normal work of distribution board, and this will cause relevant unit power of nuclear power plant to descend, serious consequences such as trip even. At present, the existing measures of the power plant have some difficulties in the aspect of finding the temperature abnormity of the strong-loss load switch of the low-voltage distribution board: 1) the strong-loss load switch is usually installed in the distribution board in a drawer mode, and faults can not be caused in a short time due to temperature rise caused by partial large contact resistance, so that operators are difficult to find abnormal temperature rise through visual inspection, infrared thermal imagers or self instruments of the distribution board and take corrective measures in time in the routing inspection process; 2) when the load switch is pulled out by inspection or inspection, the load switch is internally inspected, and it is still difficult to find a temperature abnormality and a defect causing the temperature abnormality due to power failure. Prolonged overheating can further oxidize the conductor and accelerate the aging of the insulation, eventually leading to a melt-down or fire hazard.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides a wireless temperature monitoring device for a drawer type low-voltage switch of a nuclear power plant, which can monitor the temperature of the low-voltage switch in real time and avoid accidents. The technical scheme is as follows:
the utility model provides a wireless temperature monitoring device for a drawer type low-voltage switch of a nuclear power plant, which comprises:
the temperature sensors are used for detecting temperature, connecting pieces are arranged on the temperature sensors, and the temperature sensors can be connected with the low-voltage switch in a fitting manner through the connecting pieces;
the input end of the acquisition module is connected with the output end of the temperature sensor, the acquisition module is used for acquiring detection data of the temperature sensor, and each acquisition module can be simultaneously connected with a plurality of temperature sensors;
the input end of the processor is connected with the output end of the acquisition module, and the processor is used for receiving the temperature data acquired by the acquisition module and analyzing the temperature data;
the input end of the monitoring device is connected with the output end of the processor, the monitoring device is used for displaying the temperature data acquired by the acquisition module, and/or the monitoring device is used for displaying the analysis result of the processor.
Further, the temperature sensor is a three-wire system heat resistor.
Furthermore, the connecting piece is a magnetic piece, and the connecting piece can attract the temperature sensor and the surface of the low-voltage switch.
Furthermore, the acquisition module is connected with the processor through Bluetooth and/or WIFI and communicates.
Further, the number of the temperature sensors is greater than or equal to 500.
Further, the distance between the two temperature sensors is greater than or equal to 50 cm.
Further, the processor can generate a historical temperature curve according to the temperature data collected by the collecting module, and the monitoring equipment can display the historical temperature curve.
Further, the acquisition module comprises an ADS1015 chip.
Further, the ADS1015 chip has an SCL end and an SDA end.
Further, the wireless temperature monitoring device further comprises a client, and the client is used for receiving the analysis result sent by the processor.
Compared with the prior art, the utility model has the following advantages:
according to the wireless temperature monitoring device, a proper close-fitting fixed temperature measurement mode is designed according to the actual situation of a nuclear power plant field drawer type low-voltage switch, a large amount of temperature measurement requirements are needed in a small space area, temperature measurement data are collected in real time by using a Bluetooth network technology, a large amount of intensive temperature monitoring in the small area is achieved, temperature data are collected, and a user is assisted in field equipment management.
Drawings
Fig. 1 is a conceptual diagram of a wireless temperature monitoring device according to an embodiment of the present invention.
Fig. 2 is a schematic connection diagram of an acquisition module of the wireless temperature monitoring device according to the embodiment of the present invention.
Fig. 3 is a schematic circuit diagram of an acquisition module of the wireless temperature monitoring device according to the embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of a bluetooth circuit in an acquisition module of a wireless temperature monitoring device according to an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a connection between an acquisition module and a sensor in a wireless temperature monitoring device according to an embodiment of the present invention.
Reference numerals: 1-low voltage distribution board, 2-WIFI communication device, 3-power plant server, 4-monitoring device and 5-client.
Detailed Description
The technical scheme of the utility model is further explained by combining the drawings and the specific embodiments in the specification. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 to 5, in one specific embodiment of the present invention, there is provided a wireless temperature monitoring device for a drawer-type low-voltage switch of a nuclear power plant, the wireless temperature monitoring device including:
the temperature sensors are used for detecting temperature, connecting pieces are arranged on the temperature sensors, and the temperature sensors can be connected with the low-voltage switch in a fitting manner through the connecting pieces;
the input end of the acquisition module is connected with the output end of the temperature sensor, the acquisition module is used for acquiring detection data of the temperature sensor, and each acquisition module can be simultaneously connected with a plurality of temperature sensors;
the input end of the processor is connected with the output end of the acquisition module, and the processor is used for receiving the temperature data acquired by the acquisition module and analyzing the temperature data;
the input end of the monitoring device is connected with the output end of the processor, the monitoring device is used for displaying the temperature data acquired by the acquisition module, and/or the monitoring device is used for displaying the analysis result of the processor.
In a specific embodiment of the present invention, the temperature sensor is a three-wire thermal resistor.
In a specific embodiment of the present invention, the connecting element is a magnetic element, and the connecting element enables the temperature sensor to be attracted with the surface of the low-voltage switch.
In a specific embodiment of the present invention, the acquisition module and the processor are connected and communicate with each other through bluetooth and/or WIFI.
In a specific embodiment of the present invention, the number of the temperature sensors is equal to or greater than 500.
In a particular embodiment of the utility model, the distance between two of said temperature sensors is greater than or equal to 50 cm.
In a specific embodiment of the present invention, the processor may generate a historical temperature curve according to the temperature data collected by the collecting module, and the monitoring device may display the historical temperature curve.
In a specific embodiment of the present invention, the acquisition module includes an ADS1015 chip.
In one embodiment of the utility model, the ADS1015 chip has an SCL terminal and an SDA terminal.
In a specific embodiment of the present invention, the wireless temperature monitoring device further includes a client 5, and the client 5 is configured to receive the analysis result sent by the processor.
In an embodiment of the present invention, the temperature monitoring device includes a monitoring device, a plurality of wireless temperature sensors and an acquisition module, the wireless temperature sensors are respectively disposed in a distribution board on the site, and the wireless temperature sensors are tightly fixed on the surface of a drawer-type low-voltage switch in the distribution board through a connecting piece (or also called a fixing piece), the wireless temperature sensors are respectively connected to the acquisition module, the acquisition module includes a bluetooth module, the bluetooth module is electrically connected to the temperature acquisition module to transmit information acquired by the wireless temperature sensors to the monitoring device, the monitoring device includes a display terminal, and the display terminal displays the information.
Preferably, the fixing member is a magnetic component, and the magnetic component is adhered to the surface of the drawer type low-voltage switch.
Preferably, the acquisition module is a multi-protocol gateway supporting a bluetooth MESH network protocol and a WIFI protocol.
Every drawer type low-voltage switch disposes at least one wireless temperature sensor, wireless temperature sensor electric connection respectively to collection module.
Preferably, the wireless temperature sensor uses a three-wire thermal resistor, wherein the resistor is connected to a temperature acquisition circuit through a J2 terminal, and the temperature acquisition circuit comprises an ADS1015 chip.
Preferably, the ADS1015 chip has an SCL end and an SDA end, which are used to transmit the collected temperature signal to the bluetooth module.
A specific implementation case is taken as an example for detailed description:
an on-line monitoring device, the monitoring device comprising:
a monitoring device, a plurality of wireless temperature sensors and an acquisition module,
the wireless temperature sensor is arranged in a distribution board on the site, the wireless temperature sensor is closely fixed on the drawer type low-voltage switch through a fixing piece (such as an adhesive tape, a magnetic component and the like), the sensors are respectively connected to the acquisition modules,
the acquisition module comprises a Bluetooth module, and the information acquired by the sensor is transmitted to the monitoring device through the Bluetooth module, so that the monitored information is displayed through the monitoring device. The monitoring device comprises a server and a display terminal. The user can utilize the mobile terminal to connect with the server to obtain the monitoring information. In this embodiment, the wireless sensor can test the temperature of 4 paths at most, and can test the temperature of 1 path at least. The online real-time monitoring task is well realized in a dense and narrow space. Each drawer type low voltage switch is provided with one or more sensors. The embodiment of the application utilizes modern temperature measurement technology, fixes the temperature measurement next to the shin to the switching device under test according to the harsh requirement on site, and simultaneously utilizes the bluetooth networking technology to form the real-time temperature data acquisition of multiple spot. The data acquisition and summarization are realized in real time, the field workers are assisted to monitor the temperature of all drawer type low-voltage switch equipment, the working intensity of the field workers is reduced, the working efficiency is improved, and the normal operation of the equipment is really protected.
The online monitoring device of the embodiment of the present application is described with reference to fig. 1 and 2,
the on-line monitoring device is schematically shown in fig. 1.
The device, comprising: a monitoring device, a plurality of wireless temperature sensors (sensors for short) and an acquisition module,
the sensor is connected with the acquisition module through a specific lead. After the acquisition module acquires the temperature data, the temperature data is sent to the multi-protocol gateway through the Bluetooth antenna
The wireless temperature sensors are respectively arranged in the low-voltage switchboard 1, for example, attached to a drawer-shaped low-voltage switch. In this embodiment, in a room with a length of not more than 100 square meters, there are a plurality of switchboards placed in the cabinet, and a drawer-like low-voltage switch is provided in the switchboard, and the wireless temperature sensor is inserted into the low-voltage switch to perform close-fitting temperature measurement. The temperature measured by the wireless temperature sensor is collected by the multi-protocol gateway through the Bluetooth MESH network, and then is sent to the power plant server 3 through the WIFI protocol through the WIFI communication device 2. Users of the power plant can see the real-time measured temperature and the historical temperature curve from the monitoring device 4 (computer), so that the low-voltage switch equipment can be managed better, and the normal operation of the distribution board is ensured. The power plant user can also observe the monitoring condition of the switchboard on the LCD of the multi-protocol gateway. The multi-protocol gateway supports the Bluetooth MESH network protocol and the WIFI protocol. In this embodiment, the sensor is connected to the acquisition module by a specific wire. And after the acquisition module acquires the temperature data, the temperature data is sent to the multi-protocol gateway through the Bluetooth antenna.
The on-line monitoring device module is shown in fig. 2, a plurality of drawer type low-voltage switches are arranged in the configuration disc, each drawer type low-voltage switch is provided with one or more sensors, the sensors are electrically connected to the acquisition module respectively, the acquisition module is provided with a Bluetooth module, and information acquired by the sensors is transmitted to the server through the Bluetooth module. The user can utilize the mobile terminal to connect with the server to obtain the monitoring information. The schematic diagram of the connection of the acquisition module to the sensor is shown in fig. 5. The shape of the sensor is square, round and the like. The sensors are connected to the micro plugs by flexible connection wires of a practical length, and the connection wires are soldered to the micro plugs by soldering, one for each sensor (not shown). The acquisition module is provided with a plurality of (such as 4, 6, 8 and the like) micro card seats for micro plugs to be inserted, so that the acquisition of the sensor data by the acquisition module is realized.
In the above embodiment, the capacity of the wireless temperature sensors is not less than 500, the minimum distance between the wireless temperature sensors is not less than 0.05 m, and the wireless temperature sensors are densely distributed on the low-voltage switch equipment according to actual needs to form a dense temperature online monitoring network. All wireless temperature sensor data are gathered to the multi-protocol gateway in real time within 5 seconds through the Bluetooth MESH network, and then uploaded to the server through the WIFI, and are managed, analyzed and displayed by the server.
Next, a topological diagram of a temperature acquisition circuit in an acquisition module according to an embodiment of the present application is described with reference to fig. 3.
The temperature sensor mainly uses various three-wire thermal resistors, the thermal resistors are connected into a circuit through J2, and the MCU _3V3(+3.3V) supplies power. The R19, R17, R20 and the thermocouple constitute a bridge circuit forming an output, and differential voltage signals representing temperature information are output at the A1P and A1N terminals. The differential voltage signal of the temperature information is transmitted to the chip U3. The chip adopts 12-bit differential input and ADS1015 with amplifier as analog-digital converter to convert the differential voltage signal into digital signal. The end of RDY1 is the analog-to-digital conversion completion signal. A2P \ A2N is another thermal resistance access interface. C8\ C11 is a decoupling circuit of U3. R18\ R22 is the pull-up resistance of the I2C interface SCL \ SDA of the ADS 1015.
And after the ADS1015 acquires the temperature signal, transmitting the temperature signal to the Bluetooth module through the SCL \ SDA port.
The bluetooth circuit topology of the embodiments of the present application is described next in conjunction with figure 4,
the Bluetooth circuit adopts a 3.3V power supply Bluetooth module Tigekin-C module (U5) to form a Bluetooth network node, and obtains temperature data through an I2C interface SCL \ SDA connected with ADS1015 through an I2C interface SCL \ SDA. The UART _ RTS \ UART _ CTS \ UART _ TXD \ UART _ RXD is a program debugging and downloading port of the Bluetooth module. RDY1\ RDY2 to detect whether ADS1015 analog-to-digital conversion is complete for data acquisition. TinT is an indicator light signal interface. C17\ C18 is a decoupling circuit of U5. R8 is a pull-up resistor. SW1 and SW2 constitute a bluetooth reset circuit and a program recovery circuit.
Like this, the information transmission of wireless temperature sensor sampling to collection module to transmit to the server through bluetooth module, this embodiment adopts wireless temperature sensor to satisfy the intensive multiple spot in scene, the narrow and small characteristics in space. The wireless temperature sensor is fixed on the temperature measurement drawer type low-voltage switch next to the skin, the requirement of not less than 500 points of real-time temperature measurement collection in a room with the square meter of not more than 100 is realized during signal collection, and real hot spot monitoring and early warning are achieved.
The utility model can monitor the temperature in the drawer type switch on line in real time, solve the problem that the temperature rise in the drawer type switch of the power plant is difficult to find out, help the operation and maintenance personnel to find out and process the abnormity of the switch in the operation process in time, thereby avoiding the occurrence and the expansion of faults and ensuring the reliability and the safety of a unit and a system. The utility model can be popularized in group factories.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes that can be directly or indirectly applied to other related technical fields using the contents of the present specification and the accompanying drawings are included in the scope of the present invention.
Claims (10)
1. A wireless temperature monitoring device for a drawer type low voltage switch of a nuclear power plant, the wireless temperature monitoring device comprising:
the temperature sensors are used for detecting temperature, connecting pieces are arranged on the temperature sensors, and the temperature sensors can be connected with the low-voltage switch in a fitting manner through the connecting pieces;
the input end of the acquisition module is connected with the output end of the temperature sensor, the acquisition module is used for acquiring detection data of the temperature sensor, and each acquisition module can be simultaneously connected with a plurality of temperature sensors;
the input end of the processor is connected with the output end of the acquisition module, and the processor is used for receiving the temperature data acquired by the acquisition module and analyzing the temperature data;
the input end of the monitoring device is connected with the output end of the processor, the monitoring device is used for displaying the temperature data acquired by the acquisition module, and/or the monitoring device is used for displaying the analysis result of the processor.
2. The wireless temperature monitoring device of claim 1, wherein the temperature sensor is a three wire thermal resistor.
3. The wireless temperature monitoring device of claim 1, wherein the coupling member is a magnetic member, the coupling member being capable of engaging the temperature sensor with a surface of the low-pressure switch.
4. The wireless temperature monitoring device of claim 1, wherein the acquisition module is connected and communicates with the processor via bluetooth and/or WIFI.
5. The wireless temperature monitoring device of claim 1, wherein the number of temperature sensors is 500 or more.
6. The wireless temperature monitoring device of claim 1, wherein the distance between two of the temperature sensors is greater than or equal to 50 cm.
7. The wireless temperature monitoring device of claim 1, wherein the processor is capable of generating a historical temperature profile from the temperature data collected by the collection module, the monitoring device capable of displaying the historical temperature profile.
8. The wireless temperature monitoring device of claim 1, wherein the acquisition module comprises an ADS1015 chip.
9. The wireless temperature monitoring device according to claim 8, wherein the ADS1015 chip has an SCL end and an SDA end.
10. The wireless temperature monitoring device of claim 1, further comprising a client configured to accept analysis results sent by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460514.3U CN216386034U (en) | 2021-10-13 | 2021-10-13 | Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460514.3U CN216386034U (en) | 2021-10-13 | 2021-10-13 | Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216386034U true CN216386034U (en) | 2022-04-26 |
Family
ID=81242753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122460514.3U Active CN216386034U (en) | 2021-10-13 | 2021-10-13 | Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216386034U (en) |
-
2021
- 2021-10-13 CN CN202122460514.3U patent/CN216386034U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101885556B1 (en) | apparatus for monitoring malfunction of switch gear | |
| JP6182939B2 (en) | Power measuring apparatus and power measuring system | |
| CN107907235B (en) | Automatic temperature measurement early warning device and method for transformer substation capacitor | |
| CN201795877U (en) | Temperature measurement device for cable joint | |
| KR20200081088A (en) | The implement method of smart solution for switchgear existing installed | |
| CN108539851A (en) | A kind of intelligent multifunction thermometric low-tension switch cabinet monitoring system | |
| CN210322033U (en) | Female temperature monitoring devices that arranges of cubical switchboard | |
| CN107340468A (en) | A kind of high voltage isolator detecting system | |
| CN216386034U (en) | Wireless temperature monitoring device for drawer type low-voltage switch of nuclear power plant | |
| CN108490252A (en) | A kind of intelligent electric meter | |
| CN102545184A (en) | Intelligent detection surge protector (fuse protector) | |
| CN206361806U (en) | A kind of multi-point temperature measurement control device | |
| CN211147878U (en) | Wireless temperature measuring device for cable connector of switch cabinet | |
| CN212780964U (en) | Intelligent detection system for tripping and closing current of pressure plate | |
| CN213149085U (en) | Comprehensive lightning protection grounding resistance monitoring system | |
| CN204330159U (en) | A kind of wireless temperature measurement system for monitoring breaker dynamic/static contact temperature | |
| CN203191085U (en) | High voltage equipment temperature monitoring system used for electric power inspection | |
| CN207798287U (en) | A kind of mutual inductor wireless temperature monitoring system | |
| CN110780232A (en) | Automatic change looped netowrk cabinet intelligent integrated on-line monitoring device | |
| CN110764025A (en) | Fault detection device and method for external insulation of power transformation equipment | |
| CN105716730A (en) | Wireless temperature measurement system for monitoring temperature of moving and static contacts of circuit breaker | |
| CN111650475A (en) | Power distribution network cable monitoring method | |
| CN218567488U (en) | Power quality detection device and system | |
| CN109916523A (en) | A kind of switchgear cable vault heating accident monitors system and method | |
| CN219121570U (en) | Wireless passive temperature measurement system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |