CN215118764U - Distribution box overtemperature sensing switch device - Google Patents
Distribution box overtemperature sensing switch device Download PDFInfo
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- CN215118764U CN215118764U CN202121615284.7U CN202121615284U CN215118764U CN 215118764 U CN215118764 U CN 215118764U CN 202121615284 U CN202121615284 U CN 202121615284U CN 215118764 U CN215118764 U CN 215118764U
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Abstract
An overtemperature sensing switch device of a distribution box comprises a main shell, a rear cover, a bimetal instantaneous-tripping temperature sensor, a wiring bar and a protective cover, wherein the rear cover, the bimetal instantaneous-tripping temperature sensor, the wiring bar and the protective cover are arranged on the main shell; the invention is mainly applied to a distribution box system with high-temperature power failure and alarm, when the temperature in the distribution box exceeds a certain value, the internal switch of the bimetal instantaneous-jump type temperature sensor is switched on, and the voltage tripper of the main power breaker is switched on through a wire to drive the main power breaker to be powered off, so that the high temperature of the distribution box is prevented from causing fire, and a maintainer can be informed of the fire in time through a network to handle, further expansion of accidents is prevented, the safety of the distribution system is improved, and the invention is particularly suitable for being applied to a city-level landscape lighting distribution system with unattended protection and high maintenance difficulty.
Description
Technical Field
The invention relates to an overtemperature sensing switch device of a distribution box.
Background
In the current landscape lighting power distribution system, a distribution box is an indispensable link, faults of the distribution box occur occasionally, and high temperature is generated for avoiding the occurrence of fire accidents caused by aging of internal elements of the distribution box and poor contact of a main line under extreme conditions; the safety of a power distribution system is improved, and a distribution box system with high-temperature power failure and alarm functions is quite necessary to be researched and developed; in this system, the overtemperature sensing switch device of the distribution box is absolutely needed to sense the temperature, trigger an alarm signal and trigger the main switch to trip and power off, and the overtemperature sensing switch device has the advantages of protecting a distribution system and avoiding fire hazard.
The invention has the main innovation points that:
1. the research and development of the overtemperature sensing switch device for the distribution box is made of surface anodized aluminum alloy materials, and is long in service life, high in heat conductivity, convenient to install, convenient to wire, good in temperature sensitivity and high-temperature resistant.
2. The research and development of the over-temperature sensing switch device of the distribution box is matched with the electric trigger tripping type master switch, so that the required driving voltage and current energy matching of the common type electric trigger tripping type master switch is ensured.
3. The over-temperature sensing switch device for the distribution box is researched and developed, and a control system unit formed by the over-temperature sensing switch device has the functions of high-temperature power failure and signal output and alarm.
Disclosure of Invention
The invention discloses a distribution box overtemperature sensing switch device, which has the following principle: the heat conductivity is enhanced by adopting an aluminum alloy material, and the temperature sensing element is wrapped in the shell, so that the thermal sensitivity is high, the temperature sensing element is prevented from being burnt by open fire, the damage during transportation and installation is prevented, and the influence of element welding lines on safety is prevented; an electrical bakelite wiring row with a protective cover is additionally arranged on the shell, so that wiring of a power distribution system is facilitated, and the temperature resistance is high; the shell is provided with a wire clamp which is convenient for fixing the lead wires; the temperature sensing element mounting height of the shell is designed, the heating position height of a distribution device commonly used by the distribution box is considered, the temperature sensing is convenient and sensitive, and the action is accurate.
The overtemperature sensing switch device for the distribution box, disclosed by the invention, has the beneficial effects that the overtemperature sensing switch device for the distribution box is applied to a distribution box system with high-temperature power failure and alarm, can prevent fire caused by high temperature of the distribution box, can inform maintenance personnel to handle the overtemperature sensing switch device in time through a network, prevents further expansion of accidents, improves the safety of the distribution system, and is particularly used for protecting an unattended urban landscape lighting distribution system with high maintenance difficulty.
The purpose of the invention is realized by the following technical scheme:
1. an overtemperature sensing switch device of a distribution box comprises a main shell 1, a rear cover 2 arranged on the main shell, a bimetal instantaneous-tripping temperature sensor 5, a wiring bar 7 and a protective cover 8; the rear cover 2 is fixed on the main casing 1 by a first screw 3 and a first nut 4, the bimetal instantaneous trip type temperature sensor 5 is fixed on the main casing 1 by a second screw 9 and a second nut 10, the wiring bar 7 is fixed on the main casing 1 by a third screw 11 and a third nut 12, the wiring terminals of the bimetal instantaneous trip type temperature sensor 5 and the wiring bar 7 are connected by a lead 6, and the protective cover 8 is clamped on the wiring bar 7.
2. According to the overtemperature sensing switch device of the distribution box described in the above 1, when the rear cover 2 is mounted on the main casing 1, the outer side of the clamping edge 1-1 on the main casing 1 is positioned against the inner side of the side 2-1 of the rear cover 2.
3. According to the overtemperature sensing switch device of the distribution box, which is described in the above 1, the wire clamp 1-2 is arranged at the lower part of the main shell 1, so that an external connecting wire can be fixed conveniently when the overtemperature sensing switch device is used.
4. According to the overtemperature sensing switch device of the distribution box, as described in the above 1, a gap is formed in the middle of the clamping column 8-1 on the protective cover 8, and the lower part of the clamping column 8-1 has transverse elasticity, so that the clamping column can be conveniently taken down from and clamped on the wiring bar 7 during installation and use.
General description of the application of common overtemperature sensing switching devices:
A. an overtemperature sensing switch device for a kettle only adopts simple double-gold-piece combination to form a temperature sensing switch, which is special for the kettle.
B. An overtemperature sensing switch device for an electric cooker is a temperature sensing switch formed by combining simple double gold sheets and is special for the electric cooker.
C. A general overtemperature sensing switch device adopts a temperature sensing switch combined by double gold sheets, is provided with a temperature adjusting knob, has larger size and exposes a temperature sensing element; when used in an electric box, it is typically mounted only on the sides or in the middle of the box.
D. Other overtemperature protection devices, overtemperature warning devices, overtemperature protection devices and overtemperature detection alarm devices.
The difference between the present invention and the above-mentioned various common overtemperature sensing switch devices is that:
1) the scheme A is special for a kettle, is provided with a special steam type or contact type temperature measuring channel, and is not suitable for overtemperature sensing of a distribution box.
2) The scheme B is special for the electric cooker, is a contact temperature measurement mode, and is not suitable for overtemperature sensing of the distribution box.
3) The C scheme, the size is great, and it is inconvenient to use, and the most suitable temperature sensing position of block terminal is installed to more being not convenient for, and temperature regulation knob is often transferred by accident, and the overtemperature sensing is accurate not enough, has lost limit guard action.
Compared with the prior art, the scheme of the invention comprises the following steps:
1) the scheme of the invention is that the overtemperature sensing switch device specially designed for the distribution box is large in overtemperature sensing area and accurate in temperature sensing.
2) The scheme of the invention designs the built-in bimetal instantaneous-jump type temperature sensor, which protects the temperature from factory adjustment and regulation, is not influenced by field human, and has reliable protection point and accurate action.
3) The scheme of the invention designs a convenient installation and wiring mode specially used for the distribution box, and is beneficial to use.
4) The wiring bank is provided with the clamping type protective cover in the scheme of the invention, so that the installation is convenient and the use safety is ensured.
Description of the drawings:
FIG. 1 is a front sectional view of a first embodiment of the present invention;
FIG. 2 is a left side view in elevation of a first embodiment of the present invention;
FIG. 3 is a front view of a first embodiment of the present invention;
FIG. 4 is a left side view of embodiment one of the present invention;
FIG. 5 is a right side view of a first embodiment of the present invention;
FIG. 6 is a top view of embodiment one of the present invention;
FIG. 7 is a bottom sectional view of a first embodiment of the present invention;
FIG. 8 is a rear view of embodiment one of the present invention;
FIG. 9 is a schematic diagram of an application case-wiring of the present invention;
fig. 10 is a schematic diagram of a two-wire connection of an application case of the present invention.
Reference is made to the accompanying drawings in which: 1. a main housing; 2. a rear cover; 3. a first screw; 4. a first nut; 5. a bimetal instantaneous jump type temperature sensor; 6. a wire; 7. a line bank; 8. a protective cover; 9. a second screw; 10. a second nut; 11. a third screw; 12. a third nut; 1-1. a clamping edge; 1-2, line card; 1-3, mounting holes; 2-1, lateral; 8-1, clamping the column; 100. the overtemperature sensing switch device of the distribution box; 200. a safety device; 300. a main circuit breaker; 400. a disconnection driving unit; 500. a relay main body; 501. a relay moving contact terminal; 502. a relay normally open contact terminal; 503. a relay normally closed contact terminal; 600. a circuit power live wire; 700. a circuit power supply zero line; 800. connecting copper wires; 900. an auxiliary power supply anode; 901. and a negative electrode of the auxiliary power supply.
Detailed Description
The invention is described in further detail in connection with fig. 1 to 8:
1. the utility model provides a block terminal overtemperature sensing switching device, its main casing body 1, parts such as back lid 2 all adopt the aluminum alloy to make, bimetal transient trip formula temperature sensor 5 chooses for use 220VAC/75 ℃, the specification of normally open state, wiring row 7 adopts the binding post row of screw fixation weld line formula bakelite casing, safety cover 8 adopts the PC plastic to make, first screw 3, first nut 4, second screw 9, second nut 10, third screw 11, parts such as third nut 12 all adopt stainless steel, wherein first screw 3, second screw 9 is the flat head screw.
2. The assembly method of the overtemperature sensing switch device of the distribution box (mainly referring to detailed figures 1 and 2) in the present case is as follows:
1) the wiring bar 7 is fixed on the designed position of the main shell 1 by a second screw 9 and a second nut 10, the wiring bar 7 is clamped on the protective cover 8, and the lead 6 with proper length is selected to be soldered on the wiring terminal of the wiring bar 7.
2) And then the bimetal instantaneous-jump type temperature sensor 5 is fixed on the design position of the main shell 1 by a third screw 11 and a third nut 12, and the other end of the lead on the wiring terminal of the wiring bank 7 is welded on the wiring terminal of the bimetal instantaneous-jump type temperature sensor 5.
3) The rear cover 2 is buckled on the main shell 1, and the inner sides of two side edges 2-1 of the rear cover 2 are clamped with the outer side of a clamping edge 1-1 of the main shell 1; the rear cover 2 and the main housing 1 are fixed together by first screws 3 and first nuts 4.
Application case one of the invention
The application of the invention is described in detail in connection with fig. 9:
1) fig. 9 is a schematic diagram of a wiring diagram of an application case related to the present invention in this application, in which a distribution box is configured according to a three-phase five-wire system capacity of 60KVA and a line current 100A, and the distribution box includes a necessary distribution box overtemperature sensing switch device 100, a safety device 200, a main circuit breaker 300, a circuit breaking driving unit 400, a relay main body 500, a connecting copper wire 800, and the like; the safety device 200 adopts 2A/250V/AC products, the main circuit breaker 300 adopts NSX-100N-100A, the circuit breaking driving unit 400 adopts MX/SHT-220VAC voltage tripping coil, the relay main body 500 adopts MY2N-J-220VAC miniature intermediate relay, and the power supplies of the circuit breaking driving unit 400 and the relay main body 500 adopt AC 50Hz and 220V/AC.
2) Wiring is performed according to the schematic diagram of fig. 9, and the circuit power supply live wire 600 is connected with the power supply (phase a) live wire; the main circuit drives the load through the main circuit breaker 300; the other path is connected to a relay main body 500 and a circuit breaking driving unit 400 through a safety device 200 and the over-temperature sensing switch device 100 of the distribution box, and is connected to a circuit power supply zero line 700 (N line) from the relay main body 500 and the circuit breaking driving unit 400 to form a loop; the relay moving contact terminal 501, the relay normally-open contact terminal 502 and the relay normally-closed contact terminal 503 are connected with a high-temperature alarm information system circuit, the high-temperature alarm information system adopts an auxiliary switch contact of a Philips Dynalite network intelligent module DDRC420FR, and the high-temperature alarm information system has the function of automatically sending a specific signal to a network when the state is changed.
3) In the distribution box, the overtemperature sensing switch device 100 of the distribution box is arranged at the upper part of the distribution box, which is close to a top cover; completing the installation and wiring of the devices according to the steps 1) and 2), after the power supply is connected to work, the main loop of the distribution box is easy to heat and heat up due to large current of the devices and the wires passing through, and a high-temperature area is formed at the upper part of the distribution box close to the top cover except the direct heating part according to a hot air conduction mode;
the overtemperature sensing switch device 100 of the distribution box senses temperature in time, when the temperature does not exceed a set value, a bimetal instantaneous trip type temperature sensor 5 in the overtemperature sensing switch device 100 of the distribution box is in a normally open state, and circuits of a relay main body 500 and a circuit breaking driving unit 400 are not communicated and do not act;
when the temperature exceeds a set value, the bimetal instantaneous-tripping temperature sensor 5 in the distribution box overtemperature sensing switch device 100 is switched to a closed state, the circuit of the relay main body 500 and the circuit-breaking driving unit 400 is switched on, and the circuit-breaking driving unit 400 acts; the main circuit breaker 300 is pushed to trip, the main circuit is cut off, and the safety of a power distribution system is guaranteed; meanwhile, the relay main body 500 acts, the dry contact relay moving contact terminal 501 of the relay is connected with the relay normally open contact terminal 502 and disconnected with the relay normally closed contact terminal 503, and high-temperature alarm information is output through the circuit opening and closing states of the relay moving contact terminal 501, the relay normally open contact terminal 502 and the relay normally closed contact terminal 503.
Application case two of the present invention
The application of the invention is described in detail in connection with fig. 10:
1) fig. 10 is a schematic diagram of a second connection line according to the present invention in this application case, which is mainly different from the first application case: the power supply voltage of the auxiliary circuitry is not shared with the main distribution loop, which is 380/220VAC, and the power supply voltage of the auxiliary circuitry is 24 VDC; the distribution box is provided with components such as a distribution box overtemperature sensing switch device 100, a safety device 200, a main circuit breaker 300, a circuit breaking driving unit 400, a relay main body 500 and a connecting copper wire 800; the safety device 200 adopts a 2A/250VAC product, the main breaker 300 adopts NSX-100N-100A, the circuit breaking driving unit 400 adopts an MX/SHT-24VDC voltage tripping coil, the relay main body 500 adopts a MY2N-J-24VDC miniature intermediate relay, the coil voltages of the circuit breaking driving unit 400 and the relay main body 500 are consistent with the power voltage and the type between the anode 900 of the auxiliary power supply and the cathode 901 of the auxiliary power supply, and the direct current 24V is adopted; the system must be considered to be equipped with an auxiliary power supply.
2) The wiring is carried out according to the schematic diagram of fig. 10, and the circuit power supply live wire 600 is connected with the power supply live wire; the main circuit drives the load through the main circuit breaker 300; an auxiliary power supply anode 900 is connected to a relay main body 500 and a circuit-breaking driving unit 400 through a safety device 200 and the over-temperature sensing switch device 100 of the distribution box, and is connected to an auxiliary power supply cathode 901 through a circuit from the relay main body 500 and the circuit-breaking driving unit 400 to form a loop; the relay moving contact terminal 501, the relay normally open contact terminal 502 and the relay normally closed contact terminal 503 are connected with a high-temperature alarm information system circuit.
The method and contents of other parts are similar to those of the application case of the invention.
According to the above two application cases, it can also be extended that the opening drive unit 400 and the relay main body 500 use different power types, and one power is used according to the coil of the relay main body 500, the relay main body 500 uses a two-open two-close contact form, one set of contacts controls the opening drive unit 400, and a power different from the relay main body 500 is used; the on-off of the dry contact of the other group of contacts transmits high-temperature alarm information outwards, and the high-temperature alarm information and the receiving system have the same power supply type.
According to the two application cases, the circuit breaker can also be extended to a distribution box with small distribution capacity and a single-phase distribution box, only the main circuit breaker 300 adopts products of IC65N series and IDPNa series, the circuit breaking driving unit 400 adopts an IMX voltage tripping accessory, the relay main body 500 adopts a MY2N-J miniature intermediate relay, and the voltages of the circuit breaking driving unit 400 and the relay main body 500 are adapted to the voltage of a secondary circuit.
In the above application scheme, the preferred application case one adopts the accessory of 220VAC specification, saves the secondary line auxiliary power.
In the above application scheme, the mounting hole of the third screw 11 on the main housing 1 may be designed as a screw hole, so that the third nut 12 may be omitted; the mounting holes of the first screws 3 on the rear cover 2 can also be designed as screw holes, so that the first nuts 4 are omitted.
Claims (4)
1. An overtemperature sensing switch device of a distribution box is characterized by consisting of a main shell (1) and a rear cover (2) arranged on the main shell, a bimetal instantaneous-tripping temperature sensor (5), a wiring bar (7) and a protective cover (8); the rear cover (2) is fixed on the main shell (1) by a first screw (3) and a first nut (4), the bimetal instantaneous temperature sensor (5) is fixed on the main shell (1) by a second screw (9) and a second nut (10), the wiring bar (7) is fixed on the main shell (1) by a third screw (11) and a third nut (12), the wiring terminals of the bimetal instantaneous temperature sensor (5) and the wiring bar (7) are connected by a lead (6), and the protective cover (8) is clamped on the wiring bar (7).
2. The overtemperature sensing switch device of a distribution box of claim 1, further characterized by: when the rear cover (2) is arranged on the main shell (1), the outer side of the clamping edge (1-1) on the main shell (1) is positioned against the inner side of the side edge (2-1) of the rear cover (2).
3. The overtemperature sensing switch device of a distribution box of claim 1, further characterized by: the lower part of the main shell (1) is provided with a line card (1-2) which is convenient for fixing an external electric wire when in use.
4. The overtemperature sensing switch device of a distribution box of claim 1, further characterized by: a gap is arranged in the middle of the clamping column (8-1) on the protective cover (8), and the lower part of the clamping column (8-1) has transverse elasticity, so that the clamping column can be conveniently taken down from the wiring bar (7) and clamped when being installed and used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121615284.7U CN215118764U (en) | 2021-07-16 | 2021-07-16 | Distribution box overtemperature sensing switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121615284.7U CN215118764U (en) | 2021-07-16 | 2021-07-16 | Distribution box overtemperature sensing switch device |
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| Publication Number | Publication Date |
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| CN215118764U true CN215118764U (en) | 2021-12-10 |
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| CN202121615284.7U Active CN215118764U (en) | 2021-07-16 | 2021-07-16 | Distribution box overtemperature sensing switch device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171326A (en) * | 2022-06-30 | 2022-10-11 | 云南电网有限责任公司文山供电局 | Power distribution cabinet fire and cable overheating linkage protection method and device |
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2021
- 2021-07-16 CN CN202121615284.7U patent/CN215118764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115171326A (en) * | 2022-06-30 | 2022-10-11 | 云南电网有限责任公司文山供电局 | Power distribution cabinet fire and cable overheating linkage protection method and device |
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Address after: 518000 Floor 18, Block B, Building 12, Shenzhen Bay Science and Technology Ecological Park, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Lyad Smart Technology Group Co.,Ltd. Address before: 518063 17F, block B, building 12, Shenzhen Bay science and technology ecological park, No. 18, South Keji Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: LEYARD LIGHTING CO.,LTD. |