CN210490239U - Indoor metal armored movable switch equipment - Google Patents
Indoor metal armored movable switch equipment Download PDFInfo
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- CN210490239U CN210490239U CN201921540908.6U CN201921540908U CN210490239U CN 210490239 U CN210490239 U CN 210490239U CN 201921540908 U CN201921540908 U CN 201921540908U CN 210490239 U CN210490239 U CN 210490239U
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Abstract
The utility model discloses an indoor metal armor withdrawable switchgear, including shell, valve, relay instrument room, generating line room, cable chamber, terminal room, handcart and handcart room, be equipped with relay instrument in the relay instrument room, relay instrument embeds the circuit board, is equipped with power module on the circuit board; the power supply module comprises a battery, a first capacitor, a first voltage stabilizing diode, a first resistor, a second resistor, a first triode, a second triode, a third resistor, a fourth triode, a fourth resistor, a third triode, a fifth resistor, a second voltage stabilizing diode, a second capacitor and a voltage output end, wherein the positive pole of the battery is respectively connected with one end of the first capacitor, the negative pole of the first voltage stabilizing diode, one end of the second resistor, one end of the third resistor, the emitting pole of the fourth triode, one end of the fourth resistor and the collecting electrode of the third triode. Implement the utility model discloses an indoor metal armor withdrawable switchgear has following beneficial effect: the safety and the reliability of the circuit are higher.
Description
Technical Field
The utility model relates to a switchgear field, in particular to indoor metal armor withdrawable switchgear.
Background
The indoor alternating current metal armored movable switch equipment is suitable for indoor complete sets of power distribution devices of single buses and single bus segmented systems with alternating current of 50Hz and ungrounded central points with rated voltage of 3-10 kV, and is used for various power plants, transformer substations and industrial and mining enterprises to receive and distribute network electric energy to control, protect and monitor circuits. The existing indoor alternating current metal armored movable switch equipment is simple in structure and beneficial to production and maintenance. However, the power supply part of the existing indoor ac metal-clad withdrawable switchgear lacks the corresponding circuit protection function, such as: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, the indoor metal armor that provides a security and reliability of circuit withdraws formula switchgear.
The utility model provides a technical scheme that its technical problem adopted is: the indoor metal armored withdrawable switch device comprises a shell, a valve, a relay instrument room, a bus room, a cable room, a terminal room, a handcart and a handcart room, wherein the valve and the relay instrument room are arranged on the upper end surface of the shell, the bus room, the cable room, the terminal room, the handcart and the handcart room are all arranged in the shell, an inner cavity of the shell is divided into a left cavity and a right cavity, the bus room and the cable room are arranged in the left cavity, the bus room is arranged above the cable room, the terminal room, the handcart and the handcart room are arranged in the right cavity, the terminal room is arranged above the handcart room, the handcart is arranged in the handcart room, a relay instrument is arranged in the relay instrument room, a circuit board is arranged in the relay instrument, and a power supply module is arranged on the circuit board;
the power supply module comprises a battery, a first capacitor, a first voltage stabilizing diode, a first resistor, a second resistor, a first triode, a second triode, a third resistor, a fourth triode, a fourth resistor, a third triode, a fifth resistor, a second voltage stabilizing diode, a second capacitor and a voltage output end, wherein the positive pole of the battery is respectively connected with one end of the first capacitor, the cathode of the first voltage stabilizing diode, one end of the second resistor, one end of the third resistor, the emitting electrode of the fourth triode, one end of the fourth resistor and the collector electrode of the third triode, the positive pole of the first voltage stabilizing diode is respectively connected with the base electrode of the first triode and one end of the first resistor, the other end of the second resistor is respectively connected with the collector electrode of the first triode and the base electrode of the second triode, the collector electrode of the second triode is respectively connected with the other end of the third resistor and the base electrode of the fourth triode, the base electrode of the third triode is respectively connected with the other end of the fourth resistor and the cathode of the second voltage stabilizing diode, the collector electrode of the fourth triode is connected with one end of the fifth resistor, the emitter electrode of the third triode is respectively connected with the other end of the fifth resistor, the voltage output end and one end of the second capacitor, the cathode of the battery is respectively connected with the other end of the first capacitor, the other end of the first resistor, the emitter electrode of the first triode, the emitter electrode of the second triode, the cathode of the second voltage stabilizing diode and the other end of the second capacitor and is grounded, and the resistance value of the fifth resistor is 45k omega.
In the indoor ac metal armored withdrawable switchgear, the power supply module further includes a third diode, an anode of the third diode is connected to one end of the second resistor, a cathode of the third diode is connected to a collector of the third triode, and a model of the third diode is S-822T.
Indoor interchange metal armor withdrawable switchgear in, power module still includes sixth resistance, the one end of sixth resistance with the collecting electrode of first triode is connected, the other end of sixth resistance with the base of second triode is connected, the resistance of sixth resistance is 36k omega.
In the indoor ac metal armored withdrawable switchgear of the present invention, the first triode is an NPN-type triode.
In the indoor ac metal armored withdrawable switchgear of the present invention, the second triode is an NPN type triode.
In the indoor ac metal armored withdrawable switchgear of the present invention, the third transistor is an NPN-type transistor.
In the indoor ac metal armored withdrawable switchgear, the fourth triode is a PNP type triode.
Implement the utility model discloses an indoor metal armor withdrawable switchgear has following beneficial effect: the handcart is provided with the shell, the valve, the relay instrument chamber, the bus chamber, the cable chamber, the terminal chamber, the handcart and the handcart chamber, the relay instrument is arranged in the relay instrument chamber, the relay instrument is internally provided with the circuit board, and the circuit board is provided with the power supply module; the power supply module comprises a battery, a first capacitor, a first voltage stabilizing diode, a first resistor, a second resistor, a first triode, a second triode, a third resistor, a fourth triode, a fourth resistor, a third triode, a fifth resistor, a second voltage stabilizing diode, a second capacitor and a voltage output end, and the fifth resistor is used for current limiting protection, so that the safety and the reliability of the circuit are high.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of an indoor metal-clad withdrawable switchgear of the present invention;
fig. 2 is a schematic circuit diagram of the power supply module in the embodiment.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the embodiment of the indoor metal-clad withdrawable switchgear of the present invention, a schematic structural diagram of the indoor metal-clad withdrawable switchgear is shown in fig. 1. In fig. 1, the indoor metal armored withdrawable switchgear includes a housing 1, a valve 2, a relay instrument room 3, a bus room 4, a cable room 5, a terminal room 6, a handcart 7 and a handcart room 8, wherein the valve 2 and the relay instrument room 3 are disposed on an upper end surface of the housing 1, the bus room 4, the cable room 5, the terminal room 6, the handcart 7 and the handcart room 8 are all disposed inside the housing 1, an inner cavity of the housing 1 is divided into a left chamber and a right chamber, the bus room 4 and the cable room 5 are disposed in the left chamber, the bus room 4 is located above the cable room, the terminal room 6, the handcart 7 and the handcart room 8 are disposed in the right chamber, the terminal room 6 is located above the handcart room 8, the handcart 7 is located in the handcart room 8, and a relay instrument 31 is disposed in the relay instrument room 3.
The shell 1 is assembled by bolts, has high mechanical strength, effectively ensures the tidiness and the attractiveness of a product, and has stronger impact resistance and corrosion resistance due to the fact that the cabinet door is coated by spraying plastics. Enclosure 1 has a protection rating of IP 4. The indoor metal armored movable switch device can be matched with a VD4 type vacuum circuit breaker and a C3 series fixed load switch produced by ABB company, and can also be matched with a plurality of domestic series vacuum circuit breakers, such as: VS1, VH1, VK and ZN28 to replace similar foreign products. No matter what kind of circuit breaker is selected, its bare conductor air insulation distance homoenergetic guarantees to be greater than 125mm, and load insulation is greater than 60 mm. The circuit breaker has the unique advantages of long service life, less maintenance and small size.
The indoor metal armored movable switch equipment has a complete armored structure, abundant wire chambers can be provided with a plurality of groups of cables, and the maximum height of a cable wiring terminal from the ground can reach 800 mm. The handcart 7 with complete functions, 100 percent of interchangeability, light and handy operation and stable action. The maintenance is simple and convenient, the bus and the cable are easy to install, and the liftable transfer trolley and the handcart 7 are very convenient to push, pull and transport. The fully-assembled indoor metal armored movable switch equipment uses the aluminum-coated steel plate, is corrosion-resistant and oxidation-resistant, adopts a multiple edge folding process, and ensures high-strength rigidity. The power receiving and distributing device is mainly used for power receiving and distributing of power plants, transformer substations, industrial and mining enterprise and public institution units and secondary transformer substations of power systems.
In this embodiment, the relay meter 31 has a built-in circuit board (not shown), and the circuit board is provided with a power supply module. Fig. 2 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 2, the power supply module includes a battery, a first capacitor C1, a first zener diode D1, a first resistor R1, a second resistor R2, a first transistor Q1, a second transistor Q2, a third resistor R3, a fourth transistor Q4, a fourth resistor R4, a third transistor Q3, a fifth resistor R5, a second zener diode D2, a second capacitor C2, and a voltage output Vo, wherein a positive electrode BAT + of the battery is connected to one end of the first capacitor C1, a cathode of the first zener diode D1, one end of the second resistor R2, one end of the third resistor R53, an emitter of the fourth transistor Q4, one end of the fourth resistor R4, and a collector of the third transistor Q3, an anode of the first zener diode D1 is connected to a base of the first transistor Q1, one end of the first resistor R848627, and a collector of the second transistor Q1, the collector of the second triode Q2 is connected to the other end of the third resistor R3 and the base of the fourth triode Q4, the base of the third triode Q3 is connected to the other end of the fourth resistor R4 and the cathode of the second zener diode D2, the collector of the fourth triode Q4 is connected to one end of the fifth resistor R5, the emitter of the third triode Q3 is connected to the other end of the fifth resistor R5, the voltage output Vo and one end of the second capacitor C2, and the negative electrode BAT-of the battery is connected to the other end of the first capacitor C1, the other end of the first resistor R1, the emitter of the first triode Q1, the emitter of the second triode Q2, the cathode of the second zener diode D2 and the other end of the second capacitor C2, and is grounded.
The fifth resistor R5 is a current limiting resistor, and is used for current limiting protection of the collector current of the fourth transistor Q4. The current limiting protection principle is as follows: when the collector current of the fourth triode Q4 is large, the fifth resistor R5 can reduce the collector current of the fourth triode Q4 to keep the fourth triode Q4 in a normal operating state, so that the device in the circuit is not burned out due to too large current, and the safety and reliability of the circuit are high. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 45k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be adjusted according to specific situations, that is, the resistance of the fifth resistor R5 may be increased or decreased according to specific situations.
The circuit working principle of the power supply module is as follows: when the battery voltage is 12V, the voltage of the battery passes through the first zener diode D1 and the first resistor R1, the voltage generated on the first resistor R1 is low level, and the first triode Q1 cannot be turned on; therefore, the collector voltage of the first triode Q1 is connected to the positive electrode BAT + of the battery through the second resistor R2 and is at a high level, so that the conduction of the second triode Q2 can be realized; after the second transistor Q2 is turned on, a voltage difference is generated across the third resistor R3, so that the fourth transistor Q4 is turned on; the voltage of the battery is then directly output to the voltage output Vo via the fourth transistor Q4.
When the voltage of the battery is 24V, the voltage of the battery passes through the first zener diode D1 and the first resistor R1, the voltage generated on the first resistor R1 is at a high level, and the first triode Q1 is turned on; thus, the collector of the first transistor Q1 is low, which makes the second transistor Q2 non-conductive; the second triode Q2 cannot be conducted, so that no voltage difference exists across the third resistor R3, and the fourth triode Q4 cannot be conducted, so that the voltage of the battery can be output to the voltage output end Vo through the voltage generated by the third triode Q3, and the second voltage stabilizing diode D2 clamps the output voltage, so that the output voltage cannot be output too high; therefore, the output voltage of the battery is controlled within a certain range no matter the battery is 12V or 24V, and the 12/24V battery universal power supply circuit is realized.
In this embodiment, the first transistor Q1 is an NPN transistor, the second transistor Q2 is an NPN transistor, the third transistor Q3 is an NPN transistor, and the fourth transistor Q4 is a PNP transistor. Certainly, in practical applications, the first transistor Q1, the second transistor Q2, and the third transistor Q3 may also be PNP transistors, and the fourth transistor Q4 may also be NPN transistors, but the junctions of the circuits are also changed accordingly.
In this embodiment, the power supply module further includes a third diode D3, an anode of the third diode D3 is connected to one end of the second resistor R2, and a cathode of the third diode D3 is connected to a collector of the third transistor Q3. The third diode D3 is a current limiting diode for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the third diode D3 is located is large, the current of the branch where the third diode D3 is located can be reduced by the third diode D3, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burned out due to the large current, so as to further enhance the safety and reliability of the circuit. It should be noted that in the present embodiment, the third diode D3 has a model number S-822T. Of course, in practical applications, the third diode D3 may also be another type of diode with similar functions.
In this embodiment, the power supply module further includes a sixth resistor R6, one end of the sixth resistor R6 is connected to the collector of the first transistor Q1, and the other end of the sixth resistor R6 is connected to the base of the second transistor Q2. The sixth resistor R6 is a current limiting resistor, and is used for current limiting protection of the base current of the second transistor Q2. The current limiting protection principle is as follows: when the base current of the second triode Q2 is large, the sixth resistor R6 can reduce the base current of the second triode Q2 to keep the second triode Q2 in a normal working state, so that the elements in the circuit are not burnt out due to too large current, and the safety and reliability of the circuit are further enhanced. It should be noted that, in the present embodiment, the resistance of the sixth resistor R6 is 36k Ω. Of course, in practical applications, the resistance of the sixth resistor R6 may be adjusted according to specific situations, that is, the resistance of the sixth resistor R6 may be increased or decreased according to specific situations.
In short, in this embodiment, the current-limiting resistor is disposed in the power supply module, so that the safety and reliability of the circuit are high.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An indoor metal armored movable switch device is characterized by comprising a shell, a valve, a relay instrument chamber, a bus chamber, a cable chamber, a terminal chamber, a handcart and a handcart chamber, the valve and the relay instrument chamber are arranged on the upper end surface of the shell, the bus chamber, the cable chamber, the terminal chamber, the handcart and the handcart chamber are all arranged in the shell, the inner cavity of the shell is divided into a left cavity and a right cavity, the bus chamber and the cable chamber are arranged in the left cavity, the bus chamber is positioned above the cable chamber, the terminal chamber, the handcart and the handcart chamber are arranged in the right chamber, the terminal chamber is positioned above the handcart chamber, the handcart is positioned in the handcart chamber, a relay instrument is arranged in the relay instrument chamber, a circuit board is arranged in the relay instrument, and a power supply module is arranged on the circuit board;
the power supply module comprises a battery, a first capacitor, a first voltage stabilizing diode, a first resistor, a second resistor, a first triode, a second triode, a third resistor, a fourth triode, a fourth resistor, a third triode, a fifth resistor, a second voltage stabilizing diode, a second capacitor and a voltage output end, wherein the positive pole of the battery is respectively connected with one end of the first capacitor, the cathode of the first voltage stabilizing diode, one end of the second resistor, one end of the third resistor, the emitting electrode of the fourth triode, one end of the fourth resistor and the collector electrode of the third triode, the positive pole of the first voltage stabilizing diode is respectively connected with the base electrode of the first triode and one end of the first resistor, the other end of the second resistor is respectively connected with the collector electrode of the first triode and the base electrode of the second triode, the collector electrode of the second triode is respectively connected with the other end of the third resistor and the base electrode of the fourth triode, the base electrode of the third triode is respectively connected with the other end of the fourth resistor and the cathode of the second voltage stabilizing diode, the collector electrode of the fourth triode is connected with one end of the fifth resistor, the emitter electrode of the third triode is respectively connected with the other end of the fifth resistor, the voltage output end and one end of the second capacitor, the cathode of the battery is respectively connected with the other end of the first capacitor, the other end of the first resistor, the emitter electrode of the first triode, the emitter electrode of the second triode, the cathode of the second voltage stabilizing diode and the other end of the second capacitor and is grounded, and the resistance value of the fifth resistor is 45k omega.
2. The indoor metal-clad withdrawable switchgear device according to claim 1, wherein said power supply module further comprises a third diode, an anode of said third diode being connected to one end of said second resistor, a cathode of said third diode being connected to a collector of said third transistor, said third diode being of the type S-822T.
3. The indoor metal-clad withdrawable switching device according to claim 1, wherein said power supply module further comprises a sixth resistor, one end of said sixth resistor being connected to the collector of said first transistor and the other end of said sixth resistor being connected to the base of said second transistor, said sixth resistor having a resistance of 36k Ω.
4. An indoor metal armored removal switch apparatus according to any one of claims 1-3 wherein the first transistor is an NPN transistor.
5. An indoor metal armored removal switch apparatus according to any one of claims 1-3 wherein said second transistor is an NPN transistor.
6. An indoor metal armored removal switch apparatus according to any one of claims 1-3 wherein the third transistor is an NPN transistor.
7. An indoor metal armored removal switch apparatus according to any one of claims 1-3 wherein said fourth transistor is a PNP transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540908.6U CN210490239U (en) | 2019-09-17 | 2019-09-17 | Indoor metal armored movable switch equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921540908.6U CN210490239U (en) | 2019-09-17 | 2019-09-17 | Indoor metal armored movable switch equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210490239U true CN210490239U (en) | 2020-05-08 |
Family
ID=70540346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921540908.6U Expired - Fee Related CN210490239U (en) | 2019-09-17 | 2019-09-17 | Indoor metal armored movable switch equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210490239U (en) |
-
2019
- 2019-09-17 CN CN201921540908.6U patent/CN210490239U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 Termination date: 20210917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |