CN203800403U - Multifunctional distribution terminal box - Google Patents
Multifunctional distribution terminal box Download PDFInfo
- Publication number
- CN203800403U CN203800403U CN201420230670.8U CN201420230670U CN203800403U CN 203800403 U CN203800403 U CN 203800403U CN 201420230670 U CN201420230670 U CN 201420230670U CN 203800403 U CN203800403 U CN 203800403U
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- China
- Prior art keywords
- power supply
- output
- live wire
- diverter switch
- distribution terminal
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- Expired - Fee Related
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Abstract
The utility model relates to a multifunctional distribution terminal box. According to the multifunctional distribution terminal box, a box body is internally equipped with a dual AC power source switching device, the dual AC power source switching device comprises a lightning protection filter circuit, a dual path switching relay, a first power source output line and a second power source output line, wherein the lightning protection filter circuit is arranged in an input line of the dual path switching relay, a normally-closed output end and a normally-opened output end of the dual path switching relay are respectively connected with a power source of a power distribution terminal, outer sides of the box body in upper, left, right, front and back directions are respectively provided with insulation protection boards, the insulation protection boards and a casing of the box body are connected through vertical columns, and a bottom portion of the box body is provided with cable through holes. The multifunctional distribution terminal box not only provides a 1+1 standby power source for the power distribution terminal, but also guarantees uninterrupted work and improves safety standards of an electrical power network, moreover, a dual-layer structure of the casing and the insulation protection board is utilized to balance the outdoor high temperature and the temperature in the box body, reduces temperature difference and reduces condensation probability.
Description
Technical field
The utility model relates to a kind of distribution terminal apparatus for protecting power supply, specifically a kind of Multifunctional power distribution termination rack.
Background technology
In power distribution network, most of distribution terminals, in outdoor, need to have the ability of the various natural calamities of opposing.Thunder and lightning is the very common phenomenon that has destructive power of occurring in nature, and this has proposed very high lightning protection and power supply reliability requirement to distribution terminal.In engineering application at present, adopt lightning protection device to add the mode of power relay more, carry out power protection and switching, the nominal load of power relay is AC220V/10A, adopts this mode to switch, and has very large potential safety hazard.In addition, casing is the not important component of climate or other object infringement of distribution terminal.When there was dampness in the air, especially in rainy season, moist condensation forms ponding in case, easily causes electronic installation operation exception, mistaking signal in casing, allows operations staff judge the disconnected error analysis of making by accident, damage equipment even, the safe operation of serious threat electrical network.For guaranteeing in high Humid Area built-in electrical insulation level, assurance device reliably working, to moistureproof, anti-condensation having higher requirement in casing.
Utility model content
For above-mentioned deficiency, the utility model provides a kind of Multifunctional power distribution termination rack, and it not only can effectively prevent thunderbolt, and can prevent condensation frosting in casing.
The technical scheme in the invention for solving the technical problem is: a kind of Multifunctional power distribution termination rack, comprise casing and base, described box house is provided with distribution terminal equipment and is arranged on the double cross stream power transfer device in distribution terminal equipment current supply circuit, it is characterized in that, described double cross stream power transfer device comprises lightning protection filter circuit, two-way transfer relay, the first power supply output line road and second source outlet line, one end of described lightning protection filter circuit is connected with power input line road, the other end is connected with the input of two-way transfer relay, the normally closed output of described two-way transfer relay is connected with the first power supply output line road, often opening output is connected with second source outlet line, the first described power supply output line road and second source outlet line respectively with distribution terminal equipment connection, the arranged outside of described casing has heat insulation protective plate, between described heat insulation protective plate and cabinet shell, adopts column to be connected, and bottom half is provided with cable through-hole, above described casing, the left side, the right side, five of front and backs direction be respectively provided with a heat insulation protective plate.
Preferably, described lightning protection filter circuit comprises high-tension resistive ARR1, high-tension resistive ARR2, piezo-resistance VAR1, piezo-resistance VAR2, capacitor C 1 and capacitor C 2, and described two-way transfer relay comprises coil JM, diverter switch JK1 and diverter switch JK2, one end of described high-tension resistive ARR1 is connected with power supply input live wire L, the other end is connected with one end of piezo-resistance VAR1 with one end of capacitor C 1 respectively, the other end of the other end of described capacitor C 1 and piezo-resistance VAR1 is connected with power supply input zero line N respectively, the two ends of described capacitor C 2 are connected with power supply input live wire N with power supply input live wire L respectively, described piezo-resistance VAR2 one end is connected with power supply input live wire N, after other end series connection high-tension resistive ARR2, is connected with earth terminal FG, the input of described diverter switch JK1 is connected with power supply input live wire L, the normally closed output of diverter switch JK1 is connected with the first power supply output live wire L1, the output of often opening of diverter switch JK1 is connected with second source output live wire L2, the input of described diverter switch JK2 is connected with power supply input live wire N, the normally closed output of diverter switch JK2 is connected with the first power supply output live wire N1, the output of often opening of diverter switch JK2 is connected with second source output live wire N2, the two ends of the coil JM of described two-way transfer relay J are connected with the output of often opening of often opening output and diverter switch JK2 of diverter switch JK1 respectively.
Preferably, described two-way transfer relay adopts AC220/12A two-way electromagnetic relay.
Preferably, described column is at least 1 centimetre.
The beneficial effects of the utility model are: adopt after said structure, the utility model, for distribution terminal provides " 1+1 backup " power supply, has guaranteed terminal non-stop run, has improved the security level of distribution; The utility model utilizes the temperature in can well the balance outdoor high temperature of double-decker that shell adds heat insulation protective plate and casing, dwindles the temperature difference, the odds of minimizing condensation.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model while not installing heat insulation protective plate additional;
Fig. 2 is the circuit theory diagrams of double cross stream power transfer device described in the utility model;
Fig. 3 is that the utility model installs the front view after heat insulation protective plate additional;
Fig. 4 is that the utility model installs the end view after heat insulation protective plate additional;
In figure, 1 casing, 2 bases, 3 heat insulation protective plates, 4 columns.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in Figure 1, a kind of Multifunctional power distribution termination rack of the present utility model, comprises casing 1 and base 2, and described casing 1 inside is provided with distribution terminal equipment and is arranged on the double cross stream power transfer device in distribution terminal equipment current supply circuit.Described double cross stream power transfer device comprises lightning protection filter circuit, two-way transfer relay, the first power supply output line road and second source outlet line, one end of described lightning protection filter circuit is connected with power input line road, the other end is connected with the input of two-way transfer relay, the normally closed output of described two-way transfer relay is connected with the first power supply output line road, often open output and be connected with second source outlet line, the first described power supply output line road and second source outlet line respectively with distribution terminal equipment connection.
As shown in Figure 2, described lightning protection filter circuit comprises high-tension resistive ARR1, high-tension resistive ARR2, piezo-resistance VAR1, piezo-resistance VAR2, capacitor C 1 and capacitor C 2, and described two-way transfer relay comprises coil JM, diverter switch JK1 and diverter switch JK2, one end of described high-tension resistive ARR1 is connected with power supply input live wire L, the other end is connected with one end of piezo-resistance VAR1 with one end of capacitor C 1 respectively, the other end of the other end of described capacitor C 1 and piezo-resistance VAR1 is connected with power supply input zero line N respectively, the two ends of described capacitor C 2 are connected with power supply input live wire N with power supply input live wire L respectively, described piezo-resistance VAR2 one end is connected with power supply input live wire N, after other end series connection high-tension resistive ARR2, is connected with earth terminal FG, the input of described diverter switch JK1 is connected with power supply input live wire L, the normally closed output of diverter switch JK1 is connected with the first power supply output live wire L1, the output of often opening of diverter switch JK1 is connected with second source output live wire L2, the input of described diverter switch JK2 is connected with power supply input live wire N, the normally closed output of diverter switch JK2 is connected with the first power supply output live wire N1, the output of often opening of diverter switch JK2 is connected with second source output live wire N2, the two ends of the coil JM of described two-way transfer relay J are connected with the output of often opening of often opening output and diverter switch JK2 of diverter switch JK1 respectively.Wherein, described two-way transfer relay J preferably adopts AC220/12A two-way electromagnetic relay.
The utility model adopts general AC220/12A two-way electromagnetic relay, under normal condition relay coil obtain electric, relay adhesive, a wherein road power supply energising, when Dang Zhegai road power supply breaks down, relay automatically switches, a-road-through is electric in addition, and two-way switches uninterrupted normal work of assurance terminal.Lightning protection filter circuit is applicable to piezo-resistance, high-voltage capacitance, the discharge diode built-up circuit of parameter by selection, the surge voltage electric current producing in the time of can absorbing thunderbolt, " 1+1 backup " power supply can be provided for distribution terminal, comprise two-way power supply, under normal condition, only wherein a road is power terminal equipment, during Dang Yi road dead electricity, automatically switch to another road power supply, guarantee terminal non-stop run.
In addition, for fear of relay, in two-way handoff procedure, producing excessive impulse current causes relay to burn, can in the circuit of second source outlet line, increase a current-limiting resistance, current-limiting resistance is connected on often opening between output and second source output live wire L2 of diverter switch JK1.By selecting the current-limiting resistance of suitable parameters can make circuit when not switching between homophase, impulse current drops to 9.5A/5ms from 28A/5ms, assurance impulse current, within the scope of relay rated current, avoids handoff procedure relay to burn because impulse current is excessive.
As shown in Figure 3 and Figure 4, casing described in the utility model 1 lower end arranges base 2, and arranged outside has heat insulation protective plate 3, between described heat insulation protective plate 3 and casing 1 shell, adopts column 4 to be connected, and bottom half is provided with cable through-hole; Above described casing 1, the left side, the right side, five of front and backs direction be respectively provided with a heat insulation protective plate 3.The length of wherein said column is at least 1 centimetre, makes spacing between heat insulation protective plate 3 and casing 1 shell be not less than the temp buffer of 1 centimetre of ventilation and heat, forms Double-protection function.
Except structure described in the utility model, all the other are prior art.
The above is preferred implementation of the present utility model; for those skilled in the art; not departing under the prerequisite of the utility model principle, can also make some improvements and modifications, these improvements and modifications are also regarded as protection range of the present utility model.
Claims (4)
1. a Multifunctional power distribution termination rack, comprise casing and base, described box house is provided with distribution terminal equipment and is arranged on the double cross stream power transfer device in distribution terminal equipment current supply circuit, it is characterized in that, described double cross stream power transfer device comprises lightning protection filter circuit, two-way transfer relay, the first power supply output line road and second source outlet line, one end of described lightning protection filter circuit is connected with power input line road, the other end is connected with the input of two-way transfer relay, the normally closed output of described two-way transfer relay is connected with the first power supply output line road, often opening output is connected with second source outlet line, the first described power supply output line road and second source outlet line respectively with distribution terminal equipment connection, the arranged outside of described casing has heat insulation protective plate, between described heat insulation protective plate and cabinet shell, adopts column to be connected, and bottom half is provided with cable through-hole, above described casing, the left side, the right side, five of front and backs direction be respectively provided with a heat insulation protective plate.
2. a kind of Multifunctional power distribution termination rack according to claim 1, it is characterized in that, described lightning protection filter circuit comprises high-tension resistive ARR1, high-tension resistive ARR2, piezo-resistance VAR1, piezo-resistance VAR2, capacitor C 1 and capacitor C 2, and described two-way transfer relay comprises coil JM, diverter switch JK1 and diverter switch JK2, one end of described high-tension resistive ARR1 is connected with power supply input live wire L, the other end is connected with one end of piezo-resistance VAR1 with one end of capacitor C 1 respectively, the other end of the other end of described capacitor C 1 and piezo-resistance VAR1 is connected with power supply input zero line N respectively, the two ends of described capacitor C 2 are connected with power supply input live wire N with power supply input live wire L respectively, described piezo-resistance VAR2 one end is connected with power supply input live wire N, after other end series connection high-tension resistive ARR2, is connected with earth terminal FG, the input of described diverter switch JK1 is connected with power supply input live wire L, the normally closed output of diverter switch JK1 is connected with the first power supply output live wire L1, the output of often opening of diverter switch JK1 is connected with second source output live wire L2, the input of described diverter switch JK2 is connected with power supply input live wire N, the normally closed output of diverter switch JK2 is connected with the first power supply output live wire N1, the output of often opening of diverter switch JK2 is connected with second source output live wire N2, the two ends of the coil JM of described two-way transfer relay J are connected with the output of often opening of often opening output and diverter switch JK2 of diverter switch JK1 respectively.
3. a kind of Multifunctional power distribution termination rack according to claim 1 and 2, is characterized in that, described two-way transfer relay adopts AC220/12A two-way electromagnetic relay.
4. a kind of Multifunctional power distribution termination rack according to claim 1 and 2, is characterized in that, described column is at least 1 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230670.8U CN203800403U (en) | 2014-05-07 | 2014-05-07 | Multifunctional distribution terminal box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230670.8U CN203800403U (en) | 2014-05-07 | 2014-05-07 | Multifunctional distribution terminal box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800403U true CN203800403U (en) | 2014-08-27 |
Family
ID=51382592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420230670.8U Expired - Fee Related CN203800403U (en) | 2014-05-07 | 2014-05-07 | Multifunctional distribution terminal box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800403U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963798A (en) * | 2018-07-23 | 2018-12-07 | 余文冰 | A kind of releasable protecting crust for protective switch cabinet |
| CN111181359A (en) * | 2020-02-27 | 2020-05-19 | 北京交大思诺科技股份有限公司 | Novel LKJ power plug-in |
-
2014
- 2014-05-07 CN CN201420230670.8U patent/CN203800403U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108963798A (en) * | 2018-07-23 | 2018-12-07 | 余文冰 | A kind of releasable protecting crust for protective switch cabinet |
| CN111181359A (en) * | 2020-02-27 | 2020-05-19 | 北京交大思诺科技股份有限公司 | Novel LKJ power plug-in |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20170507 |