CN210199281U - Test load box - Google Patents
Test load box Download PDFInfo
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- CN210199281U CN210199281U CN201920481379.0U CN201920481379U CN210199281U CN 210199281 U CN210199281 U CN 210199281U CN 201920481379 U CN201920481379 U CN 201920481379U CN 210199281 U CN210199281 U CN 210199281U
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- load
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- air cooling
- control terminal
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Abstract
The utility model provides a test load box, including control terminal, load module, temperature detection module and forced air cooling module, the contactor has concatenated on the major loop of load module, temperature detection module is used for detecting the temperature of load module, the air outlet of forced air cooling module is aimed at load module, control terminal includes the controller, the contactor on temperature detection module, forced air cooling module and the load module is connected respectively to the controller. If the temperature detection module detects that the temperature of the load module is too high when the load box works, the controller controls the contactor to be disconnected so as to unload the load module, and at the moment, the controller controls the air cooling module to continue working so as to continue cooling the load box, so that the temperature of the load box is reduced quickly.
Description
Technical Field
The utility model relates to a load box technical field, in particular to test load box.
Background
The load box is a power supply detection device, is mainly used for carrying out load detection and maintenance on a generator, an Uninterruptible Power Supply (UPS) and power transmission equipment, and is tool equipment for periodic test and maintenance of the generator set and the UPS.
When the test load box works, the load module inside the test load box can generate heat in a large amount, so that the existing test load box needs to be provided with an air cooling module to carry out air cooling heat dissipation on the load module, and the air cooling module needs to be started synchronously when the test load box works. This kind of test load box is equipped with temperature detection module usually, fails in time to dispel the heat and leads to load module high temperature at the air-cooled module, and load module can stop work to avoid load module to damage, treat that load module's temperature reduces to suitable temperature after, load module restarts again. However, after the load module stops working, the air cooling module also stops working synchronously, which makes the temperature of the load box slow to reduce, thus resulting in low working efficiency of the load box.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a hardware structure of test load case for software engineer to make software engineer program the back to the controller in this hardware structure, test load case is at its load module because of the high temperature when the stop work, and load module's temperature reduction is fast.
For solving the technical problem, the utility model provides a test load box, including control terminal, load module, temperature detection module and air-cooled module, the contactor has concatenated on load module's the major loop, temperature detection module is used for detecting load module's temperature, load module is aimed at to air-cooled module's air outlet, control terminal includes the controller, the contactor on temperature detection module, air-cooled module and the load module is connected respectively to the controller.
Preferably, the load module includes a plurality of resistance units connected in parallel, and each resistance unit is connected with power through a circuit breaker.
Preferably, the control terminal is provided with an alarm module, and the alarm module is connected with the controller.
Preferably, the control terminal is provided with an emergency stop button, and the emergency stop button is connected with the controller.
Preferably, the controller is a PLC controller.
The utility model provides a hardware structure has following beneficial effect: because the contactor is arranged on a main loop of the load module, and the controller on the termination terminal is respectively connected with the temperature detection module, the air cooling module and the contactor, after a software engineer programs the controller, if the temperature detection module detects that the temperature of the load module is too high when the load box works, the controller controls the contactor to be disconnected so as to unload the load module, and at the moment, the controller controls the air cooling module to continue to work so as to continue to cool the load box, so that the temperature reduction speed of the load box is high.
Drawings
FIG. 1 is a circuit block diagram of a test load box;
fig. 2 is a schematic structural diagram of a control terminal;
fig. 3 is a circuit schematic of a load module.
Description of reference numerals: 1-control terminal; 2-a load module; 3-a temperature detection module; 4-air cooling module; 11-a power switch; 12-a control panel; 13-an alarm module; 14-scram button.
Detailed Description
The test load box is shown in fig. 1 and comprises a control terminal 1, a load module 2, a temperature detection module 3 and an air cooling module 4, wherein the control terminal 1 is respectively connected with the load module 2, the temperature detection module 3 and the air cooling module 4.
As shown in fig. 2, the control terminal 1 includes a power switch 11, a control panel 12, an alarm module 13, an emergency stop button 14, and a PLC controller (not shown in the figure) disposed inside the control terminal, wherein the control panel 12 is preferably a touch screen, the alarm module 13 is preferably an audible and visual alarm, the PLC controller is respectively connected to the control panel 12, the alarm module 13, and the stop button 14, and the control terminal 1 is respectively connected to the load module 2, the temperature detection module 3, and the air cooling module 4 through the PLC controller.
As shown in fig. 3, the load module 2 includes five resistance units R1-R5 connected in parallel and a contactor KM1 connected in series in the main loop, where the connection of the control terminal 1 to the load module 2 in fig. 1 is specifically: the control terminal 1 is connected with the contactor KM1 on the load module 2 through a PLC controller, and the PLC controller can control the on-off of the contactor KM 1. In the load module 2, five resistance units R1-R5 are respectively connected with power through five circuit breakers QF 1-QF 5, the five circuit breakers QF 1-QF 5 are normally closed, and when the current flowing through the resistance units R1-R5 is too large, the corresponding circuit breakers are disconnected to protect the resistance units. The temperature detection module 3 is preferably a temperature sensor provided in the vicinity of the load module 2 for detecting the temperatures of the five resistance units R1 to R5 in the load module 2 and transmitting the measured temperature data to the PLC controller of the control terminal 1. The air cooling module 4 is preferably an axial flow fan, and the air outlet of the air cooling module is aligned with the five resistance units R1-R5 of the load module 2.
When a user starts the load box, the control terminal 1 is powered on and started by pressing the power switch 11 on the control terminal 1, then the user can input a starting signal to the PLC through the control panel 11, the PLC receives the starting signal and then controls the contactor KM1 of the load module 2 to be closed, five resistance units R1-R5 in the load module 2 are powered on to work, at the moment, the PLC also controls the temperature detection module 3 to start, the temperature detection module 3 detects the temperature of the five resistance units R1-R5 on the load module 2, and the detected temperature data is transmitted to the PLC. If the temperature data measured by the temperature detection module 3 is greater than the preset temperature threshold value in the PLC controller, the PLC controller controls the disconnection of the contactor KM1 in the load module 2, so that five resistance power supplies R1-R5 in the load module 2 stop working, at this time, the PLC controller also controls the start of the air cooling module 4 and the alarm module 13, the air cooling module 4 blows cold air to the resistance units R1-R5 in the load module 2 after being started, so that the resistance units R1-R5 in the load module 2 accelerate cooling, and the alarm module 13 sends out an audible and visual alarm to remind a user after being started.
In the working process of the load box, if an emergency occurs, a user can press the emergency stop button 14 to send an emergency stop signal to the PLC controller, and the PLC controller controls the contactor KM1 in the load module 2 to be switched off after receiving the emergency stop signal, so that the load module 2 stops working to prevent an accident.
Claims (5)
1. A test load box, its characterized in that: including control terminal, load module, temperature detection module and forced air cooling module, the contactor has concatenated on the major loop of load module, temperature detection module is used for detecting the temperature of load module, the load module is aimed at to the air outlet of forced air cooling module, control terminal includes the controller, the contactor on temperature detection module, forced air cooling module and the load module is connected respectively to the controller.
2. The test load box of claim 1, wherein: the load module comprises a plurality of resistance units which are connected in parallel, and each resistance unit is connected with electricity through a breaker.
3. The test load box of claim 1, wherein: the control terminal is provided with an alarm module, and the alarm module is connected with the controller.
4. The test load box of claim 1, wherein: the control terminal is provided with an emergency stop button, and the emergency stop button is connected with the controller.
5. The test load box of claim 1, wherein: the controller is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481379.0U CN210199281U (en) | 2019-04-10 | 2019-04-10 | Test load box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920481379.0U CN210199281U (en) | 2019-04-10 | 2019-04-10 | Test load box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210199281U true CN210199281U (en) | 2020-03-27 |
Family
ID=69877868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920481379.0U Active CN210199281U (en) | 2019-04-10 | 2019-04-10 | Test load box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210199281U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295895A (en) * | 2021-04-13 | 2021-08-24 | 广东电网有限责任公司广州供电局 | Load device |
| CN114062787A (en) * | 2020-08-06 | 2022-02-18 | 孕龙科技股份有限公司 | Circuit quality detection device for electric circuit |
-
2019
- 2019-04-10 CN CN201920481379.0U patent/CN210199281U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114062787A (en) * | 2020-08-06 | 2022-02-18 | 孕龙科技股份有限公司 | Circuit quality detection device for electric circuit |
| CN113295895A (en) * | 2021-04-13 | 2021-08-24 | 广东电网有限责任公司广州供电局 | Load device |
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