CN211018249U - A condenser case that is used for smoke protection device of condenser case and includes it - Google Patents
A condenser case that is used for smoke protection device of condenser case and includes it Download PDFInfo
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- CN211018249U CN211018249U CN202020184721.3U CN202020184721U CN211018249U CN 211018249 U CN211018249 U CN 211018249U CN 202020184721 U CN202020184721 U CN 202020184721U CN 211018249 U CN211018249 U CN 211018249U
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Abstract
The utility model provides a smoke protection device for a capacitor cabinet and the capacitor cabinet comprising the same, wherein the capacitor cabinet comprises a cabinet body, an on-off brake control coil and an on-off brake control switch; the smoke protection device comprises: the smoke sensor is positioned in the cabinet body and comprises a smoke sensor switch; the two input terminals of the control signal generating unit are connected to the two ends of the smoke sensor switch, and the output end of the control signal generating unit is used for outputting a switching-on/off control signal based on the switching state of the smoke sensor switch; the first switch is connected with the switching-on/off control coil in series; the first control coil and the second switch are connected with the switching-on and switching-off control switch in series; the switching-on and switching-off control signal is used for controlling the switching state of the second switch, and the first control coil is used for controlling the switching state of the first switch. The utility model discloses a smoke protection device has improved anti-interference performance, security and the reliability of the smog protect function of condenser cabinet.
Description
Technical Field
The utility model relates to a condenser cabinet field, concretely relates to a condenser cabinet that is used for smoke protection device of condenser cabinet and includes it.
Background
The existing capacitor cabinet comprises a cabinet body, a bus bar, a fuse, a vacuum switch, a capacitor, a reactor, a current transformer, an instrument panel and the like. Capacitor cabinets connected in power systems can balance inductive loads, improve power factor, reduce line losses, and improve power supply quality.
However, the conventional capacitor box has only an electrical protection function, for example, a protection function for voltage and current. When a large amount of smoke is generated in the capacitor cabinet due to problems such as heating or fire, the conventional capacitor cabinet cannot effectively monitor and perform protection actions.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that prior art exists, the utility model provides a smog protection device for condenser cabinet, condenser cabinet includes:
a cabinet body;
the vacuum switch is positioned inside the cabinet body;
the switching-on and switching-off control coil is used for controlling the switching-on and switching-off of the vacuum switch; and
the switching-on and switching-off control switch is used for controlling the electrifying state of the switching-on and switching-off control coil;
the smoke protection device comprises:
a smoke sensor located inside the cabinet, including a smoke sensor switch;
the two input terminals of the control signal generating unit are connected to the two ends of the smoke sensor switch, and the output end of the control signal generating unit is used for outputting a switching-on/off control signal based on the switching state of the smoke sensor switch;
the first switch is connected with the switching-on/off control coil in series;
the first control coil and the second switch are connected with the switching-on and switching-off control switch in series;
the switching-on and switching-off control signal is used for controlling the switching state of the second switch, and the first control coil is used for controlling the switching state of the first switch.
Preferably, the smoke protection device comprises a second control coil and a third switch which are connected in series, wherein the third switch is used for controlling the switching state of the third switch according to the switching on/off control signal, and the second control coil is used for controlling the switching state of the second switch.
Preferably, the first switch and the first control coil constitute a normally open relay, the second switch and the second control coil constitute a normally closed relay, and the third switch is a fully controlled switching device.
Preferably, the smoke protection device comprises: a smoke protection turn-on device for outputting a digital logic level; and the two input terminals of the arithmetic device are respectively connected with the output end of the smoke protection starting device and the output end of the control signal generating unit, and the digital logic level output by the output end of the arithmetic device is used for controlling the switching state of the second switch.
Preferably, the control signal generating unit includes: a power supply device; an optocoupler having two input terminals and two output terminals, the two input terminals of the optocoupler being connected to both ends of the smoke sensor switch by the power supply; a resistor connected in series with the two output terminals of the optocoupler between a first direct current power supply and ground; and the input end of the signal processor is connected to a node formed by connecting one of the two output terminals of the optical coupler with the resistor, and the output end of the signal processor is used for outputting the switching-on/off control signal.
Preferably, the optical coupler includes: two light emitting diodes connected in reverse parallel; and a phototransistor having a collector connected to the first direct current power source and an emitter grounded through the resistor.
Preferably, the smoke sensor switch is configured to be in a closed state when the smoke value inside the cabinet is greater than a predetermined threshold value, and to be in an open state when the smoke value inside the cabinet is not greater than the predetermined threshold value.
Preferably, the smoke protection device includes a second dc power supply, two ends of the first switch connected in series with the switching-on/off control coil are connected to two ends of the second dc power supply, and two ends of the first control coil connected in series with the switching-on/off control coil are connected to two ends of the second dc power supply.
The utility model also provides a capacitor box, capacitor box includes:
a cabinet body;
the vacuum switch is positioned inside the cabinet body;
the switching-on and switching-off control coil is used for controlling the switching-on and switching-off of the vacuum switch;
the switching-on and switching-off control switch is used for controlling the electrifying state of the switching-on and switching-off control coil; and
a smoke protection device as described above.
Preferably, the cabinet body comprises a bottom plate and a top plate which are arranged oppositely, a first side plate and a second side plate which are arranged oppositely, a back plate and a cabinet door which are arranged oppositely, the switching-on and switching-off control switch is fixed on the cabinet door, and a smoke sensor in the smoke protection device is fixed on the inner side of the top plate.
Preferably, the capacitor cabinet further comprises a control panel arranged on the outer side of the cabinet door, and the switching-on/off control switch is arranged on the control panel.
Preferably, the capacitor cabinet comprises a junction box located inside the cabinet body, the junction box is close to the cabinet door, the top plate and the second side plate, and the junction box defines an accommodating space for accommodating the smoke protection device.
The utility model discloses a smoke protection device installs in the internal portion of cabinet of condenser cabinet, when it detects out the condenser of the internal portion of cabinet because the trouble produces a large amount of smog, the vacuum switch separating brake of automatic control and trouble condenser series connection breaks off the electric connection between faulty condenser and the generating line to this condenser cabinet has been protected effectively.
Additionally, the utility model discloses a smoke protection device adopts the hardware circuit to realize the smog protect function of condenser cabinet, has improved interference killing feature, security, reliability and accuracy.
Drawings
Embodiments of the invention are further described below with reference to the accompanying drawings, in which:
fig. 1 is a front view of a capacitor case according to a preferred embodiment of the present invention.
Fig. 2 is a side view of the capacitor case shown in fig. 1, viewed in the direction indicated by the arrow a.
Fig. 3 is a front view of the capacitor cabinet of fig. 1 with the cabinet door removed.
Fig. 4 is a side view of the capacitor case of fig. 2 with the first side panel removed.
Fig. 5 is a circuit diagram of a smoke protection device according to a first embodiment of the present invention.
Fig. 6 is a circuit diagram of a smoke protection device according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention is further described in detail by the following embodiments with reference to the accompanying drawings.
Fig. 1 is a front view of a capacitor case according to a preferred embodiment of the present invention, wherein the front view is a view seen when an operator faces a case door. Fig. 2 is a side view of the capacitor case shown in fig. 1, viewed in the direction indicated by the arrow a. As shown in fig. 1 and 2, the capacitor case 1 includes a case body 10 and an electrical system (described below with reference to fig. 3 and 4) inside the case body 10. The cabinet 10 has a substantially rectangular parallelepiped shape, and is made of a metal material (e.g., steel, iron, or aluminum alloy) having high mechanical strength. The cabinet 10 includes a bottom plate 11 and a top plate 12 disposed oppositely, a first side plate 13 and a second side plate 14 disposed oppositely, and a cabinet door 15 and a back plate 16 disposed oppositely.
Fig. 3 is a front view of the capacitor case of fig. 1 with the case door removed, and fig. 4 is a side view of the capacitor case of fig. 2 with the first side panel removed. As shown in fig. 3 and 4, the capacitor case 1 further includes a support plate 17, a smoke sensor 37, a fuse 21, a bus bar 22, a vacuum switch 23, a current transformer 24, a reactor 25, and a capacitor 26, which are located inside the case body 10. Wherein the supporting plate 17 is parallel to the bottom plate 11 and the top plate 12 and is fixedly connected with the inner sides of the first side plate 13 and the second side plate 14. A smoke sensor 37 is fixed on the inside of the top plate 12 for monitoring a smoke concentration value inside the cabinet 10, and a smoke sensor switch 371 (see fig. 5 in particular) in the smoke sensor 37 is turned on when the smoke concentration value is greater than a predetermined threshold value. The fuse 21, the bus bar 22, the vacuum switch 23, the current transformer 24, the reactor 25, and the capacitor 26 are connected in series. In which the fuse 21 and the vacuum switch 23 are located on the support plate 17, the fuse 21 being electrically connected to the vacuum switch 23 via the bus bar 22. The vacuum switch 23 includes an opening/closing control coil 23Z (see fig. 5 in particular), and when the opening/closing control coil 23Z is powered on, it is used to control the vacuum switch 23 to be opened; and when the switching-on/off control coil 23Z is not electrified, the switching-on/off control coil is used for controlling the switching-on/off of the vacuum switch 23. The shape and structure of the vacuum switch 23 and the switching-on/off control principle thereof are well known to those skilled in the art and will not be described herein.
Fig. 5 is a circuit diagram of a smoke protection device according to a first embodiment of the present invention. As shown in fig. 5, the smoke protection circuit 30 includes a smoke sensor 37, a control signal generating unit 32, an and operation device 33, a first direct current power supply 341, a second direct current power supply 342, a first switch 36J connected in series with the on/off control coil 23Z, and a first control coil 36Z and a second switch 35J connected in series with the on/off control switch 191.
The smoke sensor 37 includes a smoke sensor switch 371, and when the smoke concentration value inside the cabinet body 10 of the capacitor case 1 is not more than a predetermined threshold value, the smoke sensor switch 371 is kept in an off state, and when the smoke concentration value is more than the predetermined threshold value, the smoke sensor switch 371 is turned on.
Two input terminals of the control signal generating unit 32 are connected to both ends of the smoke sensor switch 371, and an output terminal thereof is connected to one input terminal of the and operation device 33. The control signal generation unit 32 includes a power supply device 31, an optical coupler 321, a resistor R, and a signal processor 322. The photo coupler 321 includes a light emitting diode and a photo transistor, an anode and a cathode of the light emitting diode being two input terminals of the photo coupler 321, and a collector and an emitter of the photo transistor being two output terminals of the photo coupler 321. Two input terminals of the photocoupler 321 are connected to both ends of the smoke sensor switch 371 through the power supply device 31, and two output terminals of the photocoupler 321 and the resistor R are connected in series between the first direct current power supply 341 and the ground. In this embodiment, the collector of the phototransistor is connected to a first direct current power source 341, and the emitter thereof is grounded through a resistor R. The input terminal of the signal processor 322 is connected to a node formed by connecting the phototransistor and the resistor R (i.e. the emitter of the phototransistor), and the output terminal of the signal processor 322 is used for outputting a switching control signal, wherein the switching control signal is a high level (e.g. 3.5-5 volts) with a digital logic value "1" and a low level (e.g. 0-0.2 volts) with a digital logic value "0".
Two input terminals of the and operation device 33 are respectively connected with the output terminal of the signal processor 322 and the output terminal of the smoke protection turning-on device 39 installed on the control panel 19, and the digital logic level output from the output terminal of the and operation device 33 is used for controlling the on-off state of the second switch 35J.
The first switch 36J and the switching control coil 23Z are connected in series and then connected to both ends of the second dc power supply 342. The first control coil 36Z, the second switch 35J, and the switching control switch 191 provided on the control panel 19 are connected in series and then connected to both ends of the second dc power supply 342. The second switch 35J is a normally-closed switch, the logic high level output by the and operation device 33 is used for controlling the second switch 35J to be in an open state, and the logic low level output by the and operation device 33 is used for controlling the second switch 35J to be in a closed state. The first control coil 36Z and the first switch 36J constitute a normally open relay, whereby the energization state of the first control coil 36Z can control the switching state of the first switch 36J.
The on/off switch 191 on the control panel 19 can be turned on or off by automatic or manual operation to energize or de-energize the first control coil 36Z. The manually operated smoke protection turn-on device 39 may output a high level with a digital logic value of "1" or a low level with a digital logic value of "0" to one input terminal of the and operation device 33.
In order to clearly illustrate the working principle of the smoke protection device 30 of the present invention, the switching operation of the vacuum switch 23 in the capacitor box 1 under normal operation condition will be described below.
The operator manually operates the switching control switch 191 on the control panel 19 to be in an off state, so that the first control coil 36Z is not energized, and the first switch 36J is in an off state, which causes the switching control coil 23Z in the vacuum switch 23 to be not energized, and finally the vacuum switch 23 to be switched off.
The operator manually operates the switching control switch 191 on the control panel 19 to be in a conducting state, so that the first control coil 36Z is energized, the first switch 36J is in a conducting state, the switching control coil 23Z in the vacuum switch 23 is energized, and finally the vacuum switch 23 is switched on.
When the pfc control device (not shown in the drawings) in the capacitor box 1 detects that the capacitor 26 connected to the power system needs to be disconnected, it controls the switching control switch 191 to be in the off state, so that the first control coil 36Z is not energized, and finally the vacuum switch 23 is switched off.
When the pfc control device in the capacitor box 1 monitors that the capacitor 26 needs to be connected to the power system, it controls the switching control switch 191 to be in a conducting state, so as to energize the first control coil 36Z, and finally switch on the vacuum switch 23.
The operation of the smoke protection device 30 of the present invention will be described with reference to the situation of the smoke generated inside the cabinet 10. To embody the function of the smoke protection device 30, the switching control switch 191 is controlled or operated to be in a conducting state, and the smoke protection switch-on device outputs a high level with digital logic "1" to make the smoke protection device 30 in a switch-on state.
When the smoke sensor 37 inside the cabinet 10 detects that the smoke concentration value inside the cabinet 10 does not exceed the predetermined threshold (i.e. no smoke is generated or only a very small amount of smoke is generated), the smoke sensor switch 371 is in an off state, at this time, the optical coupler 321 does not collect a voltage signal, the light emitting diode thereof does not emit light, and the phototransistor is in an off state, so that the voltage V output by the optical coupler 321 (i.e. the voltage value across the resistor R) is 0 volt. The input terminal of the signal processor 322 receives the zero voltage output from the optical coupler 321, thereby outputting a low level with a digital logic value "0". The and operation device 33 has two input terminals for receiving the logic low level output by the control signal generation unit 32 and the logic high level output by the smoke protection turning-on device 39, respectively, performs a logic and operation on the received logic low level and logic high level, and has an output terminal for outputting a logic low level for controlling the second switch 35J to be in a closed state. The first control coil 36Z is energized to close the first switch 36J, and further, the opening/closing control coil 23Z is energized to finally make the vacuum switch 23 in the closing state.
When the smoke sensor 37 inside the cabinet 10 monitors that the smoke concentration value inside the cabinet 10 exceeds a predetermined threshold value, the smoke sensor switch 371 inside the smoke sensor 37 will be in a closed state. The light emitting diode in the photo coupler 321 emits light and the photo transistor is in a conducting state, so that the voltage value V output by the photo coupler 321 is equal to or approximately equal to the voltage value provided by the first direct current power source 341. The signal processor 322 receives the voltage V output from the photo coupler 321, thereby outputting a logic high level to the and operation device 33. The and operation device 33 receives two logic high levels at two input terminals, performs a logic and operation on the received two logic high levels, and outputs a logic high level at an output terminal thereof for controlling the second switch 35J to be in an off state. Therefore, the first control coil 36Z is not electrified, the first switch 36J is switched off, the switching-on and switching-off control coil 23Z is not electrified, the vacuum switch 23 is controlled to be switched off finally, and smoke protection of the capacitor cabinet 1 is realized.
When the vacuum switch 23 is opened due to a too high smoke concentration value inside the cabinet body 10, an operator can manually operate the opening and closing control switch 191 to switch off in the process of overhauling the capacitor cabinet 1, so as to ensure that the vacuum switch 23 cannot be accidentally opened. After the maintenance is finished, smoke in the cabinet 10 is cleared, and the switching on/off control switch 191 is operated to be switched on, the switching state of the smoke sensor switch 371 is automatically switched from the on state to the off state, so that the optical coupler 321 outputs a zero level, the signal processor 322 outputs a logic low level to the and operation device 33, and the and operation device 33 outputs a logic low level to change the relay switch 35J from the off state to the on state, and finally the vacuum switch 23 is restored to the on state.
When the user does not need the smoke protection function, the user can operate the smoke protection switch 39 to output a logic low level to the and operation device 33, and at this time, the and operation device 33 will output a logic low level to control the second switch 35J to be in a conducting state no matter what the smoke concentration value inside the cabinet 10 is, so that the smoke protection function is disabled. When the user needs to turn on the smoke protection function, the smoke protection turning-on device 39 is operated to output a logic high level to one input terminal of the and operation device 33, and the logic level of the output terminal of the and operation device 33 is determined by the on/off state of the smoke sensor switch 371, thereby turning on the smoke protection function. According to the working principle, the combination of the smoke protection opening device 39 and the operation device 33 can meet the requirements of different users in different application environments.
The utility model discloses a smog protection device 30 monitors the inside smog concentration value of the cabinet body 10, controls vacuum switch 23 automatically and closes the separating brake, has realized the smog protection of condenser cabinet 1. The control signal generation unit 32 can stably output a switching signal based on the smoke concentration value, and the anti-interference capability is improved. The smoke protection device 30 adopts a hardware circuit to control the on-off of the vacuum switch 23, so that the safety, the reliability and the accuracy are improved.
The utility model discloses a capacitor box 1 can break off the electricity between the trouble condenser 26 that produces smog and the generating line 22 automatically according to the smog concentration value and be connected, has protected capacitor box 1 effectively.
The switching control switch 191 in the capacitor cabinet 1 is fixed on the cabinet door, so that the switching of the vacuum switch 23 is conveniently operated manually.
Smoke from a fire in the capacitor 26 will collect at the top of the cabinet and a smoke sensor 37 fixed to the inside of the top panel 12 will be able to more accurately monitor the concentration of the smoke.
The junction box 18 in the capacitor cabinet 1 is close to the first cabinet door 151, the top plate 12 and the second side plate 14, electronic components in the junction box 18 can be overhauled after the first cabinet door 151 is opened, and wiring of the electronic components in the junction box 18, the smoke sensor 37 and the switching-on/off control coil 23Z is shortened.
Fig. 6 is a circuit diagram of a smoke protection device according to a second embodiment of the present invention. As shown in fig. 6, the smoke guard 40 is substantially the same as the smoke guard 30 shown in fig. 5, except that the smoke guard 40 further comprises: a second control coil 45Z and a third switch 48 connected in series between both ends of the second dc power supply 442, the second control coil 45Z and the second switch 45J constituting a normally closed relay in which the logic level output from the and operation device 43 controls the switching state of the third switch 48 and thus the switching state of the second switch 45J.
When the smoke concentration value inside the cabinet 10 does not exceed the predetermined threshold value, the smoke sensor switch 471 in the smoke sensor 47 is in an off state, the control signal generating unit 42 outputs a logic low level to the and operation device 43, and the and operation device 43 outputs a logic low level to control the third switch 48 to be in an off state. The second control coil 45Z is thereby not energized, and the second switch 45J is in the on state, and the first control coil 46Z is energized, so that the first switch 46J is in the closed state, and finally the vacuum switch 23 is in the closed state.
When the smoke concentration value inside the cabinet 10 exceeds a predetermined threshold value, the smoke sensor switch 471 is in a conducting state, and the control signal generating unit 42 outputs a logic high level to the and operation device 43. The and operation device 43 outputs a logic high level to control the third switch 48 to be turned on. The second control coil 45Z is energized so that the second switch 45J is in an off state. The first control coil 46Z is thereby not energized, so that the first switch 46J is in the off state. Finally controlling the opening of the vacuum switch 23.
The vacuum switch 23 of the present invention may be a vacuum load switch, a vacuum contactor, a vacuum circuit breaker, or the like.
In the smoke protection device 40 of the present embodiment, the switch 48 may be a fully-controlled switching device, including but not limited to a gate turn-off thyristor (GTO), a field effect transistor (MOSFET), a field effect transistor (fet), an Insulated Gate Bipolar Transistor (IGBT), and other low-voltage switching devices, so that the logic level output by the and operation device 43 or the logic level output by the control signal generation unit 42 can be directly used to control the switch 48 to turn on or off, and no special requirement is required for the magnitude of the voltage value output by the and operation device 43. The second switch 45J can select a mechanical switch with a larger contact gap to improve safety performance, and the voltage across the second control coil 45Z is equal to the voltage across the second dc power source 442, which generates a strong enough electromagnetic force when energized to make the second switch 45J in an off state, and finally ensures that the vacuum switch 23 is opened. Thus further improving the reliability and safety of operation.
In another embodiment of the present invention, the resistor in the control signal generating unit is connected between the first dc power supply and the collector of the phototransistor, the emitter of the phototransistor is grounded, and the collector of the phototransistor is used as its output terminal and is connected to the input terminal of the signal processor, and the signal processor is configured to receive a zero voltage and output a logic high level, or receive the voltage of the first dc power supply and output a logic low level.
In a further embodiment of the present invention, the optocoupler includes two light emitting diodes connected in anti-parallel, whereby the power supply device can provide alternating current or direct current, the type of power supply of which is not limited.
Although the present invention has been described in connection with the preferred embodiments, it is not intended to limit the invention to the embodiments described herein, but rather, to include various changes and modifications without departing from the scope of the invention.
Claims (12)
1. A smoke protection device for a capacitor case, the capacitor case comprising:
a cabinet body;
the vacuum switch is positioned inside the cabinet body;
the switching-on and switching-off control coil is used for controlling the switching-on and switching-off of the vacuum switch; and
the switching-on and switching-off control switch is used for controlling the electrifying state of the switching-on and switching-off control coil;
characterized in that the smoke protection device comprises:
a smoke sensor located inside the cabinet, including a smoke sensor switch;
the two input terminals of the control signal generating unit are connected to the two ends of the smoke sensor switch, and the output end of the control signal generating unit is used for outputting a switching-on/off control signal based on the switching state of the smoke sensor switch;
the first switch is connected with the switching-on/off control coil in series;
the first control coil and the second switch are connected with the switching-on and switching-off control switch in series;
the switching-on and switching-off control signal is used for controlling the switching state of the second switch, and the first control coil is used for controlling the switching state of the first switch.
2. The smoke protection device of claim 1, wherein said smoke protection device comprises a second control coil and a third switch connected in series, wherein said third switch is used for controlling the switch state of said second control coil according to said switching on/off control signal.
3. The smoke protection device of claim 2, wherein said first switch and first control coil form a normally open relay, said second switch and second control coil form a normally closed relay, and said third switch is a fully controlled switching device.
4. A smoke protection device according to any one of claims 1 to 3, wherein said smoke protection device comprises:
a smoke protection turn-on device for outputting a digital logic level; and
and two input terminals of the arithmetic device are respectively connected with the output end of the smoke protection starting device and the output end of the control signal generating unit, and the digital logic level output by the output end of the arithmetic device is used for controlling the switching state of the second switch.
5. A smoke protection device according to any one of claims 1 to 3, wherein said control signal generating unit comprises:
a power supply device;
an optocoupler having two input terminals and two output terminals, the two input terminals of the optocoupler being connected to both ends of the smoke sensor switch by the power supply;
a resistor connected in series with the two output terminals of the optocoupler between a first direct current power supply and ground; and
and the input end of the signal processor is connected to a node formed by connecting one of the two output terminals of the optical coupler with the resistor, and the output end of the signal processor is used for outputting the switching-on/off control signal.
6. The smoke protection device of claim 5, wherein said optical coupler comprises:
two light emitting diodes connected in reverse parallel; and
and a phototransistor having a collector connected to the first direct current power source and an emitter grounded through the resistor.
7. A smoke protection device according to any one of claims 1 to 3, wherein said smoke sensor switch is adapted to be in a closed state when the smoke value inside said cabinet is greater than a predetermined threshold value, and to be in an open state when the smoke value inside said cabinet is not greater than the predetermined threshold value.
8. The smoke protection device of any one of claims 1 to 3, wherein said smoke protection device comprises a second DC power supply, two ends of said series connection of said first switch and switching control coil are connected to two ends of said second DC power supply, and two ends of said series connection of said first control coil, second switch and switching control coil are connected to two ends of said second DC power supply.
9. A capacitor case, comprising:
a cabinet body;
the vacuum switch is positioned inside the cabinet body;
the switching-on and switching-off control coil is used for controlling the switching-on and switching-off of the vacuum switch;
the switching-on and switching-off control switch is used for controlling the electrifying state of the switching-on and switching-off control coil; and
a smoke protection device as claimed in any one of claims 1 to 8.
10. The capacitor cabinet of claim 9, wherein the cabinet body comprises a bottom plate and a top plate which are oppositely arranged, a first side plate and a second side plate which are oppositely arranged, a back plate and a cabinet door which are oppositely arranged, the switching-on/off control switch is fixed on the cabinet door, and the smoke sensor in the smoke protection device is fixed on the inner side of the top plate.
11. The capacitor cabinet of claim 10, further comprising a control panel disposed outside the cabinet door, wherein the switching on/off control switch is disposed on the control panel.
12. The capacitor cabinet of claim 10, comprising a junction box located inside the cabinet body, the junction box being proximate the cabinet door, the top panel, and the second side panel, the junction box defining a receiving space for receiving the smoke protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020184721.3U CN211018249U (en) | 2020-02-19 | 2020-02-19 | A condenser case that is used for smoke protection device of condenser case and includes it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020184721.3U CN211018249U (en) | 2020-02-19 | 2020-02-19 | A condenser case that is used for smoke protection device of condenser case and includes it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211018249U true CN211018249U (en) | 2020-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020184721.3U Active CN211018249U (en) | 2020-02-19 | 2020-02-19 | A condenser case that is used for smoke protection device of condenser case and includes it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211018249U (en) |
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2020
- 2020-02-19 CN CN202020184721.3U patent/CN211018249U/en active Active
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