CN213899252U - Auxiliary air compressor protection device, circuit and train - Google Patents
Auxiliary air compressor protection device, circuit and train Download PDFInfo
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- CN213899252U CN213899252U CN202022229582.4U CN202022229582U CN213899252U CN 213899252 U CN213899252 U CN 213899252U CN 202022229582 U CN202022229582 U CN 202022229582U CN 213899252 U CN213899252 U CN 213899252U
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- air compressor
- auxiliary air
- contactor
- power supply
- switch
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Abstract
The embodiment of the application discloses auxiliary air compressor protection device, circuit and train, the device includes first switch, controller, contactor, power supply and auxiliary air compressor: the controller is used for detecting whether the working time of the auxiliary air compressor reaches a working time threshold value; if yes, sending a first turn-off signal to the contactor; the contactor is used for receiving the first turn-off signal and controlling the first switch to be turned off; the first switch is used for connecting the auxiliary air compressor and a power supply. The device can monitor the working time of the auxiliary air compressor, actively cut off the power supply of the auxiliary air compressor when the working time threshold is reached, realize the protection of the auxiliary air compressor, and avoid the fault of the auxiliary air compressor caused by overlong working time.
Description
Technical Field
The present application relates to the field of electrical circuits, and more particularly to auxiliary air compressor protection.
Background
In the running process of the rail car, the air pressure is one of important indexes for judging the running state. Maintaining good air pressure during operation of the rail car is an important factor for guaranteeing the operation of the rail car.
In the related art, an auxiliary air compressor is generally used to maintain the air pressure. The auxiliary air compressor is used for monitoring the air pressure of the auxiliary air compressor, wherein in order to guarantee the normal operation of the auxiliary air compressor and prevent the working pressure of the air compressor from being too high, the air pressure of the auxiliary air compressor can be monitored in real time, and the auxiliary air compressor is stopped when the air pressure reaches a certain value. However, this protection method is prone to failure of the auxiliary air compressor.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides an auxiliary air compressor protection device and a circuit, and the device can monitor the working time of the auxiliary air compressor, actively cut off the power supply of the auxiliary air compressor when the working time threshold is reached, protect the auxiliary air compressor, and avoid the fault of the auxiliary air compressor caused by overlong working time.
The embodiment of the application discloses the following technical scheme:
in a first aspect, the present application provides an auxiliary air compressor protection device, the device comprising a first switch, a controller, a contactor, a power supply, and an auxiliary air compressor:
the controller is used for detecting whether the working time of the auxiliary air compressor reaches a working time threshold value; if yes, sending a first turn-off signal to the contactor;
the contactor is used for receiving the first turn-off signal and controlling the first switch to be turned off;
the first switch is used for connecting the auxiliary air compressor and a power supply.
Optionally, the apparatus further comprises an air pressure detector:
the air pressure detector is used for detecting whether the auxiliary air pressure reaches a pressure threshold value or not, and if so, sending a second turn-off signal to the contactor;
the contactor is specifically used for:
and receiving the second turn-off signal and controlling the first switch to be turned off.
Optionally, the contactor includes any one of a dc contactor or an ac contactor.
Optionally, the controller includes any one or a combination of multiple kinds of a single chip microcomputer, a programmable logic controller and a time relay.
In a second aspect, an embodiment of the present application provides an auxiliary air compressor protection circuit, which may be used to implement the auxiliary air compressor protection device, the circuit includes a first switch, a controller, a power supply positive electrode, a power supply negative electrode, a contactor, and an auxiliary air compressor:
the first end of the first switch is connected with the positive electrode of the power supply, and the second end of the first switch is connected with a first node;
the controller is connected with the contactor;
the first end of the contactor is connected with the positive pole of the power supply, and the second end of the contactor is connected with the negative pole of the power supply;
and the first end of the auxiliary air compressor is connected with the first node, and the second end of the auxiliary air compressor is connected with the negative pole of the power supply.
Optionally, the circuit further includes an air pressure detector, a first end of the air pressure detector is connected to the positive electrode of the power supply, and a second end of the air pressure detector is connected to the contactor.
In a third aspect, an embodiment of the present application provides a train, where the train includes the apparatus or the circuit described in any one of the first aspect or the second aspect.
According to the technical scheme, the auxiliary air compressor protection device and the circuit are provided, the controller in the device can detect whether the working time of the auxiliary air compressor reaches the working time threshold value, if the working time of the auxiliary air compressor reaches the working time threshold value, the current auxiliary air compressor continuously works for too long time, and if the auxiliary air compressor continues to work, the auxiliary air compressor may be damaged. Therefore, after the working time threshold is reached, the first turn-off information is sent to the contactor, and the contactor can control the first switch to be turned off according to the first turn-off information, so that the connection between the auxiliary air compressor and the power supply is cut off, and the normal state of the auxiliary air compressor is protected to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a block diagram illustrating a protection device for an auxiliary air compressor according to an embodiment of the present disclosure;
FIG. 2 is a block diagram of an auxiliary air compressor protection device according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an auxiliary air compressor protection circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a protection circuit of an auxiliary air compressor according to an embodiment of the present disclosure.
Detailed Description
Embodiments of the present application are described below with reference to the accompanying drawings.
In the related art, the auxiliary air compressor is usually protected by detecting the air pressure of the auxiliary air compressor and stopping the operation of the auxiliary air compressor when the air pressure reaches a certain value. However, due to air leakage, etc., the air pressure may not reach the threshold value, resulting in the auxiliary air compressor operating for an excessively long time and causing damage.
In order to solve the technical problem, the application provides an auxiliary air compressor protection device and a circuit, and the device can monitor the working time of the auxiliary air compressor, actively cut off the power supply of the auxiliary air compressor when the working time threshold is reached, protect the auxiliary air compressor, and avoid the fault of the auxiliary air compressor caused by the working time process.
Next, a description will be given of an auxiliary air compressor protection device provided in an embodiment of the present application, with reference to the accompanying drawings. Referring to fig. 1, which is a block diagram of an auxiliary air compressor protection device 100 according to an embodiment of the present application, the device includes a controller 101, a contactor 102, a first switch 103, an electric power supply 104, and an auxiliary air compressor 105:
the controller 101 is configured to detect whether an operating time of the auxiliary air compressor 105 reaches an operating time threshold; if so, a first turn-off signal is sent to the contactor 102. The working time threshold can be set according to the working performance of the auxiliary air compressor 105, and the working time thresholds can be different for different types of auxiliary air compressors.
The contactor 102 is configured to receive the first turn-off signal and control the first switch 103 to turn off.
The first switch is used for connecting the auxiliary air compressor 105 and the power supply 104. Therefore, by turning off the first switch, the power-off process of the auxiliary air compressor 105 can be realized.
According to the technical scheme, the auxiliary air compressor protection device and the circuit are provided, the controller in the device can detect whether the working time of the auxiliary air compressor reaches the working time threshold value, if the working time of the auxiliary air compressor reaches the working time threshold value, the current auxiliary air compressor continuously works for too long time, and if the auxiliary air compressor continues to work, the auxiliary air compressor may be damaged. Therefore, after the working time threshold is reached, the first turn-off information is sent to the contactor, and the contactor can control the first switch to be turned off according to the first turn-off information, so that the connection between the auxiliary air compressor and the power supply is cut off, and the normal state of the auxiliary air compressor is protected to a certain extent.
The first switch can be an electronic switch or a mechanical switch; the contactor comprises any one of a direct current contactor or an alternating current contactor, and meanwhile, the contactor can be an alternating current three-phase contactor or an alternating current single-phase contactor; the controller comprises any one or combination of a plurality of single-chip microcomputer, a programmable logic controller and a time relay; the auxiliary air compressor can be a direct current motor or an alternating current motor.
In addition, in order to further protect the auxiliary air compressor, other protection determination factors such as air pressure and the like may be added to the protection device. In one possible implementation, as shown in fig. 2, the apparatus 100 further includes a barometric pressure detector 106:
the air pressure detector is used for detecting whether the auxiliary air pressure reaches a pressure threshold value, if so, the air pressure does not need to be maintained by the auxiliary air compressor 105, and a second turn-off signal can be sent to the contactor;
the contactor is specifically used for:
and receiving the second turn-off signal and controlling the first switch to be turned off.
Based on the protection device of the auxiliary air compressor provided by the embodiment, the application also provides a circuit for realizing the protection device. Referring to fig. 3, fig. 3 is a schematic diagram of an auxiliary air compressor protection circuit that may be used to implement the auxiliary air compressor protection device, the circuit including a first switch, a controller, a positive power supply, a negative power supply, a contactor, and an auxiliary air compressor:
the first end of the first switch is connected with the positive electrode of the power supply, and the second end of the first switch is connected with a first node;
the controller is connected with the contactor;
the first end of the contactor is connected with the positive pole of the power supply, and the second end of the contactor is connected with the negative pole of the power supply;
and the first end of the auxiliary air compressor is connected with the first node, and the second end of the auxiliary air compressor is connected with the negative pole of the power supply.
In a possible time manner, referring to fig. 4, the circuit further comprises a gas pressure detector, wherein a first end of the gas pressure detector is connected with the positive electrode of the power supply, and a second end of the gas pressure detector is connected with the contactor.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the apparatus and system embodiments, since they are substantially similar to the method embodiments, they are described in a relatively simple manner, and reference may be made to some of the descriptions of the method embodiments for related points. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. An auxiliary air compressor protection device, comprising a first switch, a controller, a contactor, a power supply, and an auxiliary air compressor:
the controller is used for detecting whether the working time of the auxiliary air compressor reaches a working time threshold value; if yes, sending a first turn-off signal to the contactor;
the contactor is used for receiving the first turn-off signal and controlling the first switch to be turned off;
the first switch is used for connecting the auxiliary air compressor and a power supply.
2. The apparatus of claim 1, further comprising a barometric pressure detector:
the air pressure detector is used for detecting whether the auxiliary air pressure reaches a pressure threshold value or not, and if so, sending a second turn-off signal to the contactor;
the contactor is specifically used for:
and receiving the second turn-off signal and controlling the first switch to be turned off.
3. The apparatus of claim 1, wherein the contactor comprises any one of a dc contactor or an ac contactor.
4. The device of claim 1, wherein the controller comprises any one or more of a single chip microcomputer, a programmable logic controller and a time relay.
5. A supplemental air compressor protection circuit that can be used to implement the supplemental air compressor protection device, the circuit comprising a first switch, a controller, a power supply positive pole, a power supply negative pole, a contactor, and a supplemental air compressor:
the first end of the first switch is connected with the positive electrode of the power supply, and the second end of the first switch is connected with a first node;
the controller is connected with the contactor;
the first end of the contactor is connected with the positive pole of the power supply, and the second end of the contactor is connected with the negative pole of the power supply;
and the first end of the auxiliary air compressor is connected with the first node, and the second end of the auxiliary air compressor is connected with the negative pole of the power supply.
6. The circuit of claim 5, further comprising a gas pressure detector having a first end connected to the positive power supply and a second end connected to the contactor.
7. A train, characterized in that the train comprises a device according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022229582.4U CN213899252U (en) | 2020-10-09 | 2020-10-09 | Auxiliary air compressor protection device, circuit and train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022229582.4U CN213899252U (en) | 2020-10-09 | 2020-10-09 | Auxiliary air compressor protection device, circuit and train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213899252U true CN213899252U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022229582.4U Active CN213899252U (en) | 2020-10-09 | 2020-10-09 | Auxiliary air compressor protection device, circuit and train |
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| Country | Link |
|---|---|
| CN (1) | CN213899252U (en) |
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2020
- 2020-10-09 CN CN202022229582.4U patent/CN213899252U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220111 Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee after: CRRC QINGDAO SIFANG Co.,Ltd. Patentee after: China National Railway Group Co., Ltd Address before: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Patentee before: CRRC QINGDAO SIFANG Co.,Ltd. |
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| TR01 | Transfer of patent right |