CN219529371U - Rectifier cooling fan on-line operation monitoring circuit - Google Patents
Rectifier cooling fan on-line operation monitoring circuit Download PDFInfo
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- CN219529371U CN219529371U CN202320727301.9U CN202320727301U CN219529371U CN 219529371 U CN219529371 U CN 219529371U CN 202320727301 U CN202320727301 U CN 202320727301U CN 219529371 U CN219529371 U CN 219529371U
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- dissipation fan
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 57
- 230000017525 heat dissipation Effects 0.000 claims abstract description 48
- 230000005855 radiation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
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Abstract
The utility model discloses an online operation monitoring circuit of a rectifier cooling fan, which comprises the following components: the current detection circuit is connected with a main power supply loop of the heat dissipation fan FNn in the rectifier and is used for detecting the heat dissipation fan FNn; the short-circuit protection circuit is connected with the temperature control circuit in the rectifier and the heat dissipation fan FNn; the main control system is connected with the current detection circuit and is used for acquiring detection signals and performing fault early warning; and the over-temperature alarm circuit is connected with the temperature control circuit and alarms under the condition of over-high temperature. Under the condition that the upper-stage circuit is powered off, the heat dissipation fan stops running, at the moment, the current detection circuit monitors that the current is 0, and the main control system acquires a signal to indicate the heat dissipation fan to stop running; before the service life of the cooling fan reaches quickly, the bearing load becomes large, the current detection circuit detects a value far greater than rated working current, and the main controller acquires a signal to indicate overload faults of the cooling fan.
Description
Technical Field
The utility model relates to the field of rectifiers, in particular to an online operation monitoring circuit of a rectifier cooling fan.
Background
The rectifier (English: rectifier) is the device that converts alternating current into direct current, can be used to power supply unit and detect radio signal etc. the rectifier is big at the operation electric current of during operation, and calorific capacity is big, need cool down through the radiator fan, and once the radiator fan stops the operation or the rotational speed reduces, leads to unable cooling or cooling effect not good, and the rectifier can produce the warning because of the temperature is too high and cause the system to shut down.
In order to monitor the working state of the heat dissipation fan, conventionally, signal acquisition is performed on a power supply circuit breaker of the heat dissipation fan to monitor whether the heat dissipation fan stops running or the rotation speed is reduced, but under the condition that the power supply of a primary circuit is disconnected, the circuit breaker cannot actively trip, and then the acquired signal is still indicated as normal; and the load of the bearing becomes large before the service life of the fan is fast, so that the rotating speed is reduced, but in the case, the collected signals still indicate normal, and in both cases, the monitoring of the cooling fan is inaccurate.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an online operation monitoring circuit of a rectifier cooling fan, which comprises: the current detection circuit is connected with a main power supply loop of the heat dissipation fan FNn in the rectifier and is used for detecting the heat dissipation fan FNn; the short-circuit protection circuit is connected with the temperature control circuit in the rectifier and the heat dissipation fan FNn; the main control system is connected with the current detection circuit and is used for acquiring detection signals and performing fault early warning; and the over-temperature alarm circuit is connected with the temperature control circuit and alarms under the condition of over-high temperature.
Preferably: the current detection circuit includes a hall sensor TAn, and the heat dissipation fan FNn is connected to the hall sensor TAn.
Preferably: the current detection circuit comprises a first detection point tan.1, and is connected with the Hall sensor TAn, and the Hall sensor TAn detects disconnection of the heat dissipation fan FNn through the first detection point tan.1.
Preferably: the current detection circuit further comprises a second detection point tan.2, the second detection point tan.2 is connected with the hall sensor TAn, and the hall sensor TAn performs overcurrent detection on the heat dissipation fan FNn through the second detection point tan.2.
Preferably: the other ends of the first detection point tan.1 and the second detection point tan.2 are connected with the main control system.
Preferably: the short-circuit protection circuit comprises a fuse FU1 and a fuse FUn, wherein the fuse FU1 is connected with the temperature control circuit, and the fuse FUn is connected with the heat dissipation fan FNn.
Preferably: the over-temperature alarm circuit comprises a relay KA2, and the relay KA2 is connected with the temperature control circuit.
Preferably: the relay KA2 comprises a normally open electric shock KA2.1 and a normally closed contact KA2.2, and the normally open electric shock KA2.1 is connected with the main control system.
Preferably: the normally closed contact KA2.2 is connected with the buzzer ALR.
Preferably: the first detection point tan.1 and the second detection point tan.2 are connected with the main control system through an aviation plug.
The utility model has the technical effects and advantages that:
according to the online operation monitoring circuit of the rectifier cooling fan, the current detection circuit is added to the main power supply loop of the cooling fan and is used for monitoring whether the operation current of the cooling fan is in a rated range or not; under the condition that the upper-stage circuit is powered off, the heat dissipation fan stops running, at the moment, the current detection circuit monitors that the current is 0, and the main control system acquires a signal to indicate the heat dissipation fan to stop running; before the service life of the cooling fan is up, the bearing load is increased, at the moment, the current detection circuit monitors a value far greater than the rated working current, and the main controller acquires a signal to indicate the overload fault of the cooling fan; through the improvement, the main controller can monitor the running state of the heat radiation fan in real time and accurately, and can give an alarm in time when the running is abnormal, so that the phenomenon that the rectifier is stopped accidentally due to the heat radiation fan in the running process is avoided.
Drawings
Fig. 1 is a schematic diagram of an online operation monitoring circuit of a rectifier heat dissipation fan according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a second embodiment of the present utility model.
In the figure:
1. a rectifier; 2. a current detection circuit; 3. a short-circuit protection circuit; 4. a temperature control circuit; 5. an over-temperature alarm circuit; 6. a rectifier bridge.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the detailed description. The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Referring to fig. 1-2, in this embodiment, an online operation monitoring circuit for a rectifier cooling fan is provided, including: a current detection circuit 2 connected to the main power supply circuit of the heat dissipation fan FNn in the rectifier 1, wherein the current detection circuit 2 is used for detecting the heat dissipation fan FNn, in this embodiment, the heat dissipation fan FNn includes a heat dissipation fan FN1 and a heat dissipation fan FN2, and the heat dissipation fan FN1 and the heat dissipation fan FN2 are both connected to the current detection circuit 2; the short-circuit protection circuit 3 is connected with the temperature control circuit 4 and the heat dissipation fan FNn in the rectifier 1; the main control system is connected with the current detection circuit 2 and is used for acquiring detection signals and performing fault early warning; the over-temperature alarm circuit 5 is connected with the temperature control circuit 4 and alarms when the temperature is over-high.
The current detection circuit 2 includes a hall sensor TAn, and is connected to the heat dissipation fan FNn through the hall sensor TAn, in this embodiment, the hall sensor TA1 is connected to the heat dissipation fan FN1, and the hall sensor TA2 is connected to the heat dissipation fan FN 2; the current detection circuit 2 comprises a first detection point TA1.1, is connected with the Hall sensor TA1, the Hall sensor TA1 detects disconnection of the heat radiation fan FN1 through the first detection point TA1.1, the current detection circuit 2 also comprises a second detection point TA1.2, is connected with the Hall sensor TA1, and the Hall sensor TA1 detects overcurrent of the heat radiation fan FN1 through the second detection point TA 1.2; the other ends of the first detection point TA1.1 and the second detection point TA1.2 are connected with a main control system, and the first detection point TAn.1 and the second detection point TAn.2 are connected with the main control system through aviation plugs; similarly, the heat dissipation fan FN2 is connected to the hall sensor TA2, and the other connection modes and functions are the same as those described above, which are not described herein.
The short-circuit protection circuit 3 includes a fuse FU1 and a fuse FUn, the fuse FU1 is connected to the temperature control circuit 4, the fuse FUn is connected to the heat dissipation fan FNn, in this embodiment, the fuse FU2 is connected to the heat dissipation fan FN1, the fuse FU3 is connected to the heat dissipation fan FN2, and the operating currents of the fuse FU1, the fuse FU2, and the fuse FU3 are 2A.
The over-temperature alarm circuit 5 comprises a relay KA2, the relay KA2 is connected with the temperature control circuit 4, the relay KA2 comprises a normally open electric shock KA2.1 and a normally closed contact KA2.2, the normally open electric shock KA2.1 is connected with the main control system, the normally closed contact KA2.2 is connected with the buzzer ALR, the working voltage can be selected to be 220V, and the frequency is 50 HZ.
The Hall sensor TAn is added to the main power supply loop of the heat dissipation fan FNn and used for monitoring whether the running current of the heat dissipation fan FNn is within a rated range; under the condition that the upper-stage circuit is powered off, the heat dissipation fan FNn stops running, at the moment, the Hall sensor TAn monitors that the current is 0, and the main control system acquires a signal to indicate the heat dissipation fan FNn to stop running; before the service life of the heat dissipation fan FNn is up, the bearing load is increased, the Hall sensor TAn monitors a value far greater than the rated working current, and the main controller acquires a signal to indicate overload fault of the heat dissipation fan FNn; through the improvement, the main control unit can real-time and accurately monitor the running state of the heat radiation fan FNn, can give an alarm in time when running abnormally, and avoid the occurrence of unexpected shutdown of the rectifier 1 due to the heat radiation fan FNn in the running process.
It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present utility model without the inventive step, are intended to be within the scope of the present utility model. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (10)
1. The utility model provides a rectifier cooling fan on-line operation monitoring circuit which characterized in that includes:
the current detection circuit (2) is connected with a main power supply loop of the heat dissipation fan FNn in the rectifier (1), and the current detection circuit (2) is used for detecting the heat dissipation fan FNn;
a short-circuit protection circuit (3) which is connected with the temperature control circuit (4) in the rectifier (1) and the heat dissipation fan FNn;
the main control system is connected with the current detection circuit (2) and is used for acquiring detection signals and performing fault early warning;
and the over-temperature alarm circuit (5) is connected with the temperature control circuit (4) and alarms under the condition of over-high temperature.
2. The online operation monitoring circuit of a rectifier heat dissipation fan according to claim 1, wherein the current detection circuit (2) comprises a hall sensor TAn, and the heat dissipation fan FNn is connected through the hall sensor TAn.
3. The online operation monitoring circuit of a rectifier heat dissipation fan according to claim 2, wherein the current detection circuit (2) comprises a first detection point tan.1, and is connected with the hall sensor TAn, and the hall sensor TAn detects the disconnection of the heat dissipation fan FNn through the first detection point tan.1.
4. A rectifier heat dissipation fan online operation monitoring circuit according to claim 3, wherein the current detection circuit (2) further comprises a second detection point tan.2, and is connected to the hall sensor TAn, and the hall sensor TAn performs overcurrent detection on the heat dissipation fan FNn through the second detection point tan.2.
5. The online operation monitoring circuit of a rectifier cooling fan according to claim 4, wherein the other ends of the first detection point tan.1 and the second detection point tan.2 are both connected to the main control system.
6. The online operation monitoring circuit of a rectifier cooling fan according to claim 1, wherein the short-circuit protection circuit (3) comprises a fuse FU1 and a fuse FUn, the fuse FU1 is connected with the temperature control circuit (4), and the fuse FUn is connected with the cooling fan FNn.
7. The online operation monitoring circuit of the rectifier cooling fan according to claim 1, wherein the over-temperature alarm circuit (5) comprises a relay KA2, and the relay KA2 is connected with the temperature control circuit (4).
8. The online operation monitoring circuit of a rectifier cooling fan according to claim 7, wherein the relay KA2 comprises a normally open electric shock KA2.1 and a normally closed contact KA2.2, and the normally open electric shock KA2.1 is connected with the main control system.
9. The online operation monitoring circuit of a rectifier cooling fan according to claim 8, wherein the normally closed contact KA2.2 is connected with a buzzer ALR.
10. The online operation monitoring circuit of a rectifier cooling fan according to claim 5, wherein the first detection point tan.1 and the second detection point tan.2 are connected to the main control system through an aviation plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320727301.9U CN219529371U (en) | 2023-04-04 | 2023-04-04 | Rectifier cooling fan on-line operation monitoring circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320727301.9U CN219529371U (en) | 2023-04-04 | 2023-04-04 | Rectifier cooling fan on-line operation monitoring circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219529371U true CN219529371U (en) | 2023-08-15 |
Family
ID=87650004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320727301.9U Active CN219529371U (en) | 2023-04-04 | 2023-04-04 | Rectifier cooling fan on-line operation monitoring circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219529371U (en) |
-
2023
- 2023-04-04 CN CN202320727301.9U patent/CN219529371U/en active Active
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