Switching-on and switching-off control and switching-on and switching-off monitoring device of vacuum contactor

Abstract

The embodiment of the utility model discloses a switching-on and switching-off control and switching-on and switching-off monitoring device of a vacuum contactor. In one specific embodiment, the system comprises a first power supply, a microcomputer integrated protection device, a contactor assembly, a first parallel resistor and a second parallel resistor. According to the implementation mode, the first parallel resistor is connected in parallel to the two ends of the coil of the closing control relay, when the vacuum contactor is electrified to be closed, the first auxiliary contact is closed, the second auxiliary contact is disconnected, the microcomputer comprehensive protection device enters a tripping position monitoring state, and the coil of the tripping position monitoring relay is electrified to be closed; under the shunting action of the first parallel resistor, the current passing through the closing control relay is not enough to support the closing of the closing control relay; therefore, closing monitoring of the microcomputer comprehensive protection device on the vacuum contactor triggered by the low-power-consumption relay is realized. Similarly, the tripping monitoring of the microcomputer comprehensive protection device on the vacuum contactor triggered by the low-power-consumption relay is realized through the second parallel resistor.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum contactors, and more specifically to a closing and opening control and closing position jump monitoring device for vacuum contactors. Background Art

[0002] The microcomputer protection device is an economical protection device used for integrated measurement, control, protection and communication. It is tailor-made for the high-voltage distribution room of the distribution network terminal, with three-stage non-directional current protection as the core, equipped with the monitoring and collection function of the power grid parameters, which can save the traditional ammeter, voltmeter, power meter, frequency meter, watt-hour meter, etc., and can transmit the measurement data and protection information to the host computer through the communication port, so as to realize the automation of the distribution network. According to the characteristics of the distribution network power supply, the device integrates the automatic switching function of the backup power supply in the device, which can flexibly realize the functions of the incoming line backup switching and the busbar backup switching.

[0003] At present, there is a vacuum contactor in the prior art, whose closing and opening control circuit adopts low-power relays, and the operating current of this type of relay is generally less than 0.1A. However, the monitoring current of the closing and opening operation circuit of some microcomputer integrated protection devices in the prior art is 0.3~4A, which is much larger than 0.1A. This makes the microcomputer integrated protection device unable to close and open the vacuum contactor, and unable to monitor the closed position and trip position of the vacuum contactor. Utility Model Content

[0004] The utility model aims to provide a device for controlling the closing and opening of a vacuum contactor triggered by low power consumption and monitoring the closing and jumping positions by connecting a resistor in parallel to a control relay, so as to solve at least one of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The first aspect of the utility model provides a closing and opening control and closing position jump monitoring device of a vacuum contactor, comprising:

[0007] A first power supply, a microcomputer integrated protection device, a contactor assembly, a first parallel resistor and a second parallel resistor;

[0008] The microcomputer integrated protection device includes a trip monitoring relay and a closing monitoring relay;

[0009] The contactor assembly includes a vacuum contactor, a closing control relay, an opening control relay, a first auxiliary contact and a second auxiliary contact;

[0010] The closing control relay is used to control the coil of the vacuum contactor to be energized, and the opening control relay is used to control the coil of the vacuum contactor to be de-energized;

[0011] The first end of the first power supply is electrically connected to one end of the coil of the trip monitoring relay and one end of the coil of the closing monitoring relay respectively;

[0012] The other end of the coil of the trip monitoring relay is electrically connected to one end of the first auxiliary contact, and the other end of the coil of the closing monitoring relay is electrically connected to one end of the second auxiliary contact;

[0013] The other end of the first auxiliary contact is electrically connected to one end of the coil of the closing control relay, and the other end of the second auxiliary contact is electrically connected to one end of the coil of the opening control relay;

[0014] The other end of the coil of the opening control relay and the other end of the coil of the closing control relay are electrically connected to the second end of the first power supply respectively;

[0015] The first parallel resistor is connected in parallel with the coil of the closing control relay, and the second parallel resistor is connected in parallel with the coil of the opening control relay. Optionally, the first auxiliary contact is a normally closed contact of a vacuum contactor, and the second auxiliary contact is a normally open contact of a vacuum contactor.

[0016] Optionally, the first auxiliary contact is a normally closed contact of a vacuum contactor, and the second auxiliary contact is a normally open contact of the vacuum contactor.

[0017] Optionally, the operating current of the trip monitoring relay is greater than the operating current of the closing control relay; the operating current of the closing monitoring relay is greater than the operating current of the opening control relay.

[0018] Optionally, the operating current of the closing control relay and the operating current of the opening control relay are respectively less than 0.1A.

[0019] Optionally, the system further comprises a rotary switch, a closing holding relay and an opening holding relay, wherein the common end of the rotary switch is electrically connected to the first end of the first power supply, the first output end of the rotary switch is electrically connected to one end of the coil of the closing holding relay, and the other end of the coil of the closing holding relay is connected between the coil of the trip monitoring relay and the first auxiliary contact and is electrically connected to the coil of the trip monitoring relay and the first auxiliary contact respectively;

[0020] One end of the normally open contact of the closing holding relay is electrically connected to the first end of the first power supply, and the other end is connected between the first output end of the rotary switch and the coil of the closing holding relay, and is electrically connected to the first output end of the rotary switch and the coil of the closing holding relay respectively;

[0021] The second output end of the rotary switch is electrically connected to one end of the coil of the opening holding relay, and the other end of the coil of the opening holding relay is connected between the coil of the closing monitoring relay and the second auxiliary contact and is electrically connected to the coil of the closing monitoring relay and the second auxiliary contact respectively;

[0022] One end of the normally open contact of the opening holding relay is electrically connected to the first end of the first power supply, and the other end is connected between the second output end of the rotary switch and the coil of the opening holding relay, and is electrically connected to the first output end of the rotary switch and the coil of the opening holding relay respectively.

[0023] Optionally, the system further comprises a first remote switch and a second remote switch, wherein the other end of the first remote switch is connected between the first auxiliary contact and the coil of the closing holding relay, and is electrically connected to the first auxiliary contact and the coil of the closing holding relay respectively;

[0024] One end of the second remote switch is electrically connected to the first end of the first power supply, and the other end of the second remote switch is connected between the second auxiliary contact and the coil of the opening holding relay, and is electrically connected to the second auxiliary contact and the coil of the opening holding relay respectively.

[0025] Optionally, the system further includes a second power supply, a jump position status indicator light and a close position status indicator light.

[0026] The first end of the second power supply is electrically connected to one end of the normally open contact of the jump monitoring relay, the other end of the normally open contact of the jump monitoring relay is electrically connected to one end of the jump status indicator light, and the other end of the jump status indicator light is electrically connected to the second end of the second power supply;

[0027] The first end of the second power supply is electrically connected to one end of the normally open contact of the closing monitoring relay, the other end of the normally open contact of the closing monitoring relay is electrically connected to one end of the closing status indicator light, and the other end of the closing status indicator light is electrically connected to the second end of the second power supply.

[0028] Optionally, the system further includes a third power supply, a jump position state abnormal alarm and a close position state abnormal alarm;

[0029] One end of the normally open contact of the closing control relay is electrically connected to the first end of the third power supply, the other end of the normally open contact of the closing control relay is electrically connected to one end of the normally closed contact of the jump monitoring relay, the other end of the normally closed contact of the jump monitoring relay is electrically connected to one end of the jump state abnormal alarm, and the other end of the jump state abnormal alarm is electrically connected to the second end of the third power supply;

[0030] One end of the normally open contact of the opening control relay is electrically connected to the first end of the third power supply, the other end of the normally open contact of the opening control relay is electrically connected to one end of the normally closed contact of the closing monitoring relay, the other end of the normally closed contact of the closing monitoring relay is electrically connected to one end of the closing state abnormal alarm, and the other end of the closing state abnormal alarm is electrically connected to the second end of the third power supply.

[0031] Optionally,

[0032] The parallel resistance value of the first parallel resistor and the coil of the closing control relay is:

[0033]

[0034] Among them, R z1 is the parallel resistance value of the first parallel resistor and the coil of the closing control relay, U e is the rated voltage of the first power supply, I C1 is the minimum closing sampling current of the microcomputer integrated protection device, R HBJ The resistance value of the coil of the closing holding relay;

[0035] The resistance of the first parallel resistor is:

[0036]

[0037] Among them, R b1 is the resistance value of the first parallel resistor, R KA1 is the resistance value of the coil of the closing control relay.

[0038] Optionally,

[0039] The parallel resistance value of the second parallel resistor and the coil of the opening control relay is:

[0040]

[0041] Among them, R z2 is the parallel resistance value of the second parallel resistor and the coil of the opening control relay, U e is the rated voltage of the first power supply, I C2 is the minimum trip sampling current of the microcomputer integrated protection device, R TBJ The resistance value of the coil of the opening holding relay;

[0042] The resistance of the second parallel resistor is:

[0043]

[0044] Among them, R b2 is the resistance value of the second parallel resistor, R KA2The resistance of the coil of the opening control relay.

[0045] The beneficial effects of the utility model are as follows:

[0046] The utility model connects the first parallel resistor in parallel to the two ends of the coil of the closing control relay. When the vacuum contactor is powered on and attracted, the first auxiliary contact is closed and the second auxiliary contact is disconnected. The microcomputer integrated protection device enters the jump monitoring state. The coil of the jump monitoring relay is powered on and attracted. Under the shunting effect of the first parallel resistor, the current passing through the closing control relay is insufficient to support its attraction. In this way, the microcomputer integrated protection device monitors the closing position of the vacuum contactor triggered by the low-power relay. Similarly, the utility model connects the second parallel resistor in parallel to the two ends of the coil of the opening control relay. When the vacuum contactor loses power and disconnects, the second auxiliary contact is closed and the first auxiliary contact is disconnected. The microcomputer integrated protection device enters the closing position monitoring state. The coil of the closing monitoring relay is powered on and attracted. Under the shunting effect of the second parallel resistor, the current passing through the opening control relay is insufficient to support its attraction. In this way, the microcomputer integrated protection device monitors the jumping position of the vacuum contactor triggered by the low-power relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0048] Figure 1 A schematic structural diagram of a closing and opening control and closing position jump monitoring device for a vacuum contactor provided by an embodiment of the utility model is shown.

[0049] Figure 2 A schematic structural diagram of a closing and opening control and closing position jump monitoring device for a vacuum contactor under local control and remote control is shown in one embodiment of the utility model.

[0050] Figure 3 A schematic diagram of the connection structure of a closed position status indicator light and a jump position status indicator light provided by an embodiment of the utility model is shown.

[0051] Figure 4 A schematic structural diagram showing the connection between a jump position abnormality alarm and a close position abnormality alarm provided by an embodiment of the utility model is shown.

[0052] Description of Figure Numbers

[0053] 1. First power supply; 2. Microcomputer integrated protection device; 21. Coil of jump monitoring relay; 22. Coil of closing monitoring relay; 23. Coil of closing holding relay; 24. Coil of opening holding relay; 25. Normally closed contact of jump monitoring relay; 26. Normally closed contact of closing monitoring relay; 27. Normally open contact of closing holding relay; 28. Normally open contact of opening holding relay; 29. ​​Normally open contact of jump monitoring relay; 210. Normally open contact of closing monitoring relay; 211. Jump status abnormal alarm ; 212, closed state abnormal alarm; 213, jump state indicator light; 214, closed state indicator light; 3, contactor assembly; 31, closing control relay coil; 32, opening control relay coil; 33, first auxiliary contact; 34, second auxiliary contact; 35, closing control relay normally open contact; 36, opening control relay normally open contact; 4, first parallel resistor; 5, second parallel resistor; 6, second power supply; 7, third power supply; 8, rotary switch; 9, first remote switch; 10, second remote switch. DETAILED DESCRIPTION

[0054] In order to more clearly illustrate the utility model, the utility model is further described below in conjunction with the embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the utility model.

[0055] A vacuum contactor closing and opening control and closing position jump monitoring device, comprising:

[0056] A first power source 1, a microcomputer integrated protection device 2, a contactor assembly 3, a first parallel resistor 4 and a second parallel resistor 5;

[0057] The microcomputer integrated protection device 2 includes a trip monitoring relay and a closing monitoring relay;

[0058] The contactor assembly 3 includes a vacuum contactor, a closing control relay, an opening control relay, a first auxiliary contact 33 and a second auxiliary contact 34;

[0059] The closing control relay is used to control the coil of the vacuum contactor to be energized, and the opening control relay is used to control the coil of the vacuum contactor to be de-energized;

[0060] The first end of the first power supply 1 is electrically connected to one end of the coil 21 of the trip monitoring relay and one end of the coil 22 of the closing monitoring relay respectively;

[0061] The other end of the trip monitoring relay is electrically connected to one end of the first auxiliary contact 33, and the other end of the closing monitoring relay is electrically connected to one end of the second auxiliary contact 34;

[0062] The other end of the first auxiliary contact 33 is electrically connected to one end of the coil 31 of the closing control relay, and the other end of the second auxiliary contact 34 is electrically connected to one end of the coil 32 of the opening control relay;

[0063] The other end of the coil 32 of the opening control relay and the other end of the coil 31 of the closing control relay are connected to the second end of the first power supply 1 .

[0064] And the other end of the second auxiliary contact 34 is electrically connected to the second end of the first power source 1;

[0065] The first parallel resistor 4 is connected in parallel with the closing control relay, and the second parallel resistor 5 is connected in parallel with the opening control relay.

[0066] The utility model connects the first parallel resistor 4 in parallel to the two ends of the coil 31 of the closing control relay. When the vacuum contactor is powered on, the first auxiliary contact 33 is closed and the second auxiliary contact 34 is disconnected. The microcomputer integrated protection device 2 enters the jump monitoring state. The coil 21 of the jump monitoring relay is powered on, and under the shunting effect of the first parallel resistor 4, the current passing through the closing control relay is insufficient to support its closure. In this way, the microcomputer integrated protection device 2 monitors the closing position of the vacuum contactor triggered by the low power consumption relay. Similarly, the utility model connects the second parallel resistor 5 in parallel to the two ends of the coil 32 of the opening control relay. When the vacuum contactor loses power and disconnects, the second auxiliary contact 34 is closed and the first auxiliary contact 33 is disconnected. The microcomputer integrated protection device 2 enters the closing monitoring state. The coil 22 of the closing monitoring relay is powered on, and under the shunting effect of the second parallel resistor 5, the current passing through the opening control relay is insufficient to support its closure. In this way, the microcomputer integrated protection device 2 monitors the jumping position of the vacuum contactor triggered by the low power consumption relay.

[0067] In a possible implementation, the first auxiliary contact 33 is a normally closed contact of a vacuum contactor, and the second auxiliary contact 34 is a normally open contact of the vacuum contactor.

[0068] When the vacuum contactor is powered on, the first auxiliary contact 33 is closed and the second auxiliary contact 34 is opened. When the vacuum contactor is powered off and opened, the first auxiliary contact 33 is opened and the second auxiliary contact 34 is closed.

[0069] In a possible implementation, the operating current of the trip monitoring relay is greater than the operating current of the closing control relay; and the operating current of the closing monitoring relay is greater than the operating current of the opening control relay.

[0070] In a possible implementation, the operating current of the closing control relay and the operating current of the opening control relay are respectively less than 0.1A.

[0071] Specifically, the utility model is applicable to the occasion where both the closing control relay and the opening control relay are low-power relays, and the corresponding trip monitoring relay and closing monitoring relay are normal relays. Therefore, the operating current of the trip monitoring relay should be greater than the operating current of the closing control relay; the operating current of the closing monitoring relay should also be greater than the operating current of the opening control relay.

[0072] If the operating current of the trip monitoring relay is smaller than the operating current of the closing control relay; or the operating current of the closing monitoring relay is smaller than the operating current of the opening control relay, the system can be used directly without connecting the first parallel resistor 4 in parallel to the coil 31 of the closing control relay, and similarly, without connecting the second parallel resistor 5 in parallel to the coil 31 of the closing control relay.

[0073] If the operating current of the closing control relay and the operating current of the opening control relay are less than 0.1A respectively, it means that both the closing control relay and the opening control relay are low power relays.

[0074] like Figure 3 As shown, in a possible implementation, the system further includes a rotary switch 8, a closing holding relay and an opening holding relay, the common end of the rotary switch 8 is electrically connected to the first end of the first power supply 1, the first output end of the rotary switch 8 is electrically connected to one end of the coil 23 of the closing holding relay, and the other end of the coil 23 of the closing holding relay is connected between the coil 21 of the trip monitoring relay and the first auxiliary contact 33 and is electrically connected to the coil 21 of the trip monitoring relay and the first auxiliary contact 33 respectively;

[0075] One end of the normally open contact 27 of the closing holding relay is electrically connected to the first end of the first power supply 1, and the other end is connected between the first output end of the rotary switch 8 and the coil 23 of the closing holding relay, and is electrically connected to the first output end of the rotary switch 8 and the coil 23 of the closing holding relay respectively;

[0076] The second output end of the rotary switch 8 is electrically connected to one end of the coil 24 of the opening holding relay, and the other end of the coil 24 of the opening holding relay is connected between the coil 22 of the closing monitoring relay and the second auxiliary contact 34 and is electrically connected to the coil 22 of the closing monitoring relay and the second auxiliary contact 34 respectively;

[0077] One end of the normally open contact 28 of the opening holding relay is electrically connected to the first end of the first power supply 1, and the other end is connected between the second output end of the rotary switch 8 and the coil 24 of the opening holding relay, and is electrically connected to the first output end of the rotary switch 8 and the coil 24 of the opening holding relay respectively.

[0078] The rotary switch 8 is mainly used for manual control of the vacuum contactor. Optionally, the rotary switch 8 uses a universal rotary switch 8 with three gears. When the rotary switch 8 is in the first gear, the common end of the rotary switch 8 and the first output end and the second output end are both in a disconnected state. When the rotary switch 8 is in the second gear, the common end of the rotary switch 8 is connected to the first output end and disconnected from the second output end. At this time, the first auxiliary contact 33 is in a closed state, the second auxiliary contact 34 is in a disconnected state, the coil 23 of the closing holding relay is energized and attracted, the normally open contact 27 of the closing holding relay is closed to keep the entire circuit energized, the coil 31 of the closing control relay is energized and attracted, and the coil of the control vacuum contactor is energized and attracted. At this time, the first auxiliary contact 33 is disconnected, the entire circuit loses power, the coil of the closing holding relay is powered off and restored, and the normally open contact 27 of the closing holding relay is disconnected; the second auxiliary contact 34 is closed, and the system is in a closed position monitoring state. The process of the rotary switch 8 in the second gear is similar to that in the second gear, and will not be repeated here.

[0079] In a possible implementation, the system further includes a first remote switch 9 and a second remote switch 10;

[0080] One end of the first remote switch 9 is electrically connected to the first end of the first power supply 1, and the other end of the first remote switch 9 is connected between the first auxiliary contact 33 and the coil 23 of the closing holding relay, and is electrically connected to the first auxiliary contact 33 and the coil 23 of the closing holding relay respectively;

[0081] One end of the second remote switch 10 is electrically connected to the first end of the first power supply 1, and the other end of the second remote switch 10 is connected between the second auxiliary contact 34 and the coil 24 of the opening holding relay, and is electrically connected to the second auxiliary contact 34 and the coil 24 of the opening holding relay respectively.

[0082] In a specific embodiment, the first remote switch 9 and the second remote switch 10 are controlled by a remote terminal, which can be a normally open contact of a relay. The states of the first remote switch 9 and the second remote switch 10 are controlled by a device such as a PLC through the power-on and power-off of a control coil to achieve remote control. The corresponding PLC device can also be connected to a host computer or to other devices through a remote communication module.

[0083] In a possible implementation, the system further includes a second power supply 6, a jump position status indicator light 213, a close position status indicator light 214,

[0084] The first end of the second power supply 6 is electrically connected to one end of the normally open contact 29 of the jump monitoring relay, the other end of the jump monitoring relay is electrically connected to one end of the jump status indicator light 213, and the other end of the jump status indicator light 213 is electrically connected to the second end of the second power supply 6;

[0085] The first end of the second power supply 6 is electrically connected to one end of the normally open contact 210 of the closing monitoring relay, the other end of the closing monitoring relay is electrically connected to one end of the closing status indicator light 214, and the other end of the closing status indicator light 214 is electrically connected to the second end of the second power supply 6.

[0086] When the coil of the vacuum contactor is in the energized state, the second auxiliary contact 34 is closed, the closing monitoring relay is energized and attracted, and the closing state indicator light 214 is lit.

[0087] When the coil of the vacuum contactor is in a power-off state, the first auxiliary contact 33 is closed, the trip monitoring relay is energized and energized, and the trip state indicator light 213 is lit.

[0088] In a possible implementation, the system further includes a third power supply 7, a jump position state abnormal alarm 211, and a close position state agenda alarm;

[0089] One end of the normally open contact 35 of the closing control relay is electrically connected to the first end of the third power supply 7, the other end of the normally open contact 35 of the closing control relay is electrically connected to one end of the normally closed contact 25 of the jump monitoring relay, the other end of the normally closed contact 25 of the jump monitoring relay is electrically connected to one end of the jump state abnormal alarm 211, and the other end of the jump state abnormal alarm 211 is electrically connected to the second end of the third power supply 7.

[0090] One end of the normally open contact 36 of the opening control relay is electrically connected to the first end of the third power supply 7, the other end of the normally open contact 36 of the opening control relay is electrically connected to one end of the normally closed contact 26 of the closing monitoring relay, the other end of the normally closed contact 26 of the closing monitoring relay is electrically connected to one end of the closing state abnormal alarm 212, and the other end of the closing state abnormal alarm 212 is electrically connected to the second end of the third power supply 7.

[0091] In a specific embodiment, both the closed position abnormal alarm 212 and the trip position abnormal alarm 211 are sound and light alarms. When the coil of the vacuum contactor is in the energized state, the second auxiliary contact 34 is disconnected and the second auxiliary contact 34 is closed. At this time, if the normally closed contact 25 of the trip position monitoring relay is not disconnected, it means that the trip position monitoring relay is abnormal, and the trip position abnormal alarm 211 emits a sound and light alarm. Similarly, the situation where the closed position abnormal alarm 212 emits a sound and light alarm can be inferred, which will not be repeated here.

[0092] In one possible implementation,

[0093] The parallel resistance value of the first parallel resistor 4 and the coil 31 of the closing control relay is:

[0094]

[0095] Among them, R z1 is the parallel resistance value of the first parallel resistor 4 and the coil 31 of the closing control relay, U e is the rated voltage of the first power supply 1, I C1 is the minimum closing sampling current of the microcomputer integrated protection device 2, R HBJ is the resistance value of the coil 23 of the closing holding relay; since the grid voltage is unstable, in order to ensure that the closing control relay can operate stably, the minimum grid voltage is calculated as 70% of the rated voltage, that is, 0.7U e .

[0096] The resistance of the first parallel resistor 4 is:

[0097]

[0098] Among them, R b1 is the resistance value of the first parallel resistor 4, R KA1 is the resistance value of the coil of the closing control relay.

[0099] In one possible implementation,

[0100] The parallel resistance value of the second parallel resistor and the coil 32 of the opening control relay is:

[0101]

[0102] Among them, R z2 is the parallel resistance value of the second parallel resistor 5 and the coil 32 of the opening control relay, U e is the rated voltage of the first power supply 1, I C2 is the minimum trip sampling current of microcomputer integrated protection device 2, R TBJ is the resistance value of the coil 24 of the opening holding relay; since the grid voltage is unstable, in order to ensure that the opening control relay can operate stably, the minimum grid voltage is calculated as 70% of the rated voltage, that is, 0.7U e .

[0103] The resistance of the second parallel resistor 5 is:

[0104]

[0105] Among them, R b2 is the resistance value of the second parallel resistor 5, R KA2 is the resistance of the coil 32 of the opening control relay.

[0106] In the description of the present utility model, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0107] It should also be noted that, in the description of the present utility model, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0108] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in this field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A vacuum contactor closing and opening control and closing position jump monitoring device, characterized in that: include: A first power supply, a microcomputer integrated protection device, a contactor assembly, a first parallel resistor and a second parallel resistor; The microcomputer integrated protection device includes a trip monitoring relay and a closing monitoring relay; The contactor assembly includes a vacuum contactor, a closing control relay, an opening control relay, a first auxiliary contact and a second auxiliary contact; The closing control relay is used to control the coil of the vacuum contactor to be energized, and the opening control relay is used to control the coil of the vacuum contactor to be de-energized; The first end of the first power supply is electrically connected to one end of the coil of the trip monitoring relay and one end of the coil of the closing monitoring relay respectively; The other end of the coil of the trip monitoring relay is electrically connected to one end of the first auxiliary contact, and the other end of the coil of the closing monitoring relay is electrically connected to one end of the second auxiliary contact; The other end of the first auxiliary contact is electrically connected to one end of the coil of the closing control relay, and the other end of the second auxiliary contact is electrically connected to one end of the coil of the opening control relay; The other end of the coil of the opening control relay and the other end of the coil of the closing control relay are electrically connected to the second end of the first power supply respectively; The first parallel resistor is connected in parallel with the coil of the closing control relay, and the second parallel resistor is connected in parallel with the coil of the opening control relay.

2. The device according to claim 1, characterized in that The first auxiliary contact is a normally closed contact of the vacuum contactor, and the second auxiliary contact is a normally open contact of the vacuum contactor.

3. The device according to claim 1, characterized in that The operating current of the trip monitoring relay is greater than the operating current of the closing control relay; the operating current of the closing monitoring relay is greater than the operating current of the opening control relay.

4. The device according to claim 1, characterized in that The operating current of the closing control relay and the operating current of the opening control relay are respectively less than 0.1A.

5. The device according to claim 1, characterized in that The closing and opening control and closing position jump monitoring device of the vacuum contactor also includes a rotary switch, a closing holding relay and an opening holding relay, wherein the common end of the rotary switch is electrically connected to the first end of the first power supply, the first output end of the rotary switch is electrically connected to one end of the coil of the closing holding relay, and the other end of the coil of the closing holding relay is connected between the coil of the jump monitoring relay and the first auxiliary contact and is electrically connected to the coil of the jump monitoring relay and the first auxiliary contact respectively; One end of the normally open contact of the closing holding relay is electrically connected to the first end of the first power supply, and the other end is connected between the first output end of the rotary switch and the coil of the closing holding relay, and is electrically connected to the first output end of the rotary switch and the coil of the closing holding relay respectively; The second output end of the rotary switch is electrically connected to one end of the coil of the opening holding relay, and the other end of the coil of the opening holding relay is connected between the coil of the closing monitoring relay and the second auxiliary contact and is electrically connected to the coil of the closing monitoring relay and the second auxiliary contact respectively; One end of the normally open contact of the opening holding relay is electrically connected to the first end of the first power supply, and the other end is connected between the second output end of the rotary switch and the coil of the opening holding relay, and is electrically connected to the first output end of the rotary switch and the coil of the opening holding relay respectively.

6. The device according to claim 5, characterized in that The system also includes a first remote switch and a second remote switch; One end of the first remote switch is electrically connected to the first end of the first power supply, and the other end of the first remote switch is connected between the first auxiliary contact and the coil of the closing holding relay, and is electrically connected to the first auxiliary contact and the coil of the closing holding relay respectively; One end of the second remote switch is electrically connected to the first end of the first power supply, and the other end of the second remote switch is connected between the second auxiliary contact and the coil of the opening holding relay, and is electrically connected to the second auxiliary contact and the coil of the opening holding relay respectively.

7. The device according to claim 1, characterized in that The closing and opening control and closing position tripping monitoring device of the vacuum contactor also includes a second power supply, a tripping position state indicator light and a closing position state indicator light; The first end of the second power supply is electrically connected to one end of the normally open contact of the jump monitoring relay, the other end of the normally open contact of the jump monitoring relay is electrically connected to one end of the jump status indicator light, and the other end of the jump status indicator light is electrically connected to the second end of the second power supply; The first end of the second power supply is electrically connected to one end of the normally open contact of the closing monitoring relay, the other end of the normally open contact of the closing monitoring relay is electrically connected to one end of the closing status indicator light, and the other end of the closing status indicator light is electrically connected to the second end of the second power supply.

8. The device according to claim 1, characterized in that The closing and opening control and closing position tripping monitoring device of the vacuum contactor also includes a third power supply, a tripping state abnormal alarm and a closing state abnormal alarm; One end of the normally open contact of the closing control relay is electrically connected to the first end of the third power supply, the other end of the normally open contact of the closing control relay is electrically connected to one end of the normally closed contact of the jump monitoring relay, the other end of the normally closed contact of the jump monitoring relay is electrically connected to one end of the jump state abnormal alarm, and the other end of the jump state abnormal alarm is electrically connected to the second end of the third power supply; One end of the normally open contact of the opening control relay is electrically connected to the first end of the third power supply, the other end of the normally open contact of the opening control relay is electrically connected to one end of the normally closed contact of the closing monitoring relay, the other end of the normally closed contact of the closing monitoring relay is electrically connected to one end of the closing state abnormal alarm, and the other end of the closing state abnormal alarm is electrically connected to the second end of the third power supply.

9. The device according to claim 1, characterized in that The parallel resistance value of the first parallel resistor and the coil of the closing control relay is: Among them, R z1 is the parallel resistance value of the first parallel resistor and the coil of the closing control relay, U e is the rated voltage of the first power supply, I C1 is the minimum closing sampling current of the microcomputer integrated protection device, R HBJ The resistance value of the coil of the closing holding relay; The resistance of the first parallel resistor is: Among them, R b1 is the resistance value of the first parallel resistor, R KA1 is the resistance value of the coil of the closing control relay.

10. The device according to claim 1, characterized in that The parallel resistance value of the second parallel resistor and the coil of the opening control relay is: Among them, R z2 is the parallel resistance value of the second parallel resistor and the coil of the opening control relay, U e is the rated voltage of the first power supply, I C2 is the minimum trip sampling current of the microcomputer integrated protection device, R TBJ The resistance value of the coil of the opening holding relay; The resistance of the second parallel resistor is: Among them, R b2 is the resistance value of the second parallel resistor, R KA2 The resistance of the coil of the opening control relay.

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