CN204791447U - Sulfur hexafluoride cubical switchboard low pressure alarm device - Google Patents
Sulfur hexafluoride cubical switchboard low pressure alarm device Download PDFInfo
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- CN204791447U CN204791447U CN201520347873.XU CN201520347873U CN204791447U CN 204791447 U CN204791447 U CN 204791447U CN 201520347873 U CN201520347873 U CN 201520347873U CN 204791447 U CN204791447 U CN 204791447U
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- sulfur hexafluoride
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 83
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 76
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 4
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000013024 troubleshooting Methods 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000033999 Device damage Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model provides a sulfur hexafluoride cubical switchboard low pressure alarm device, include: sulfur hexafluoride density sensor for the gaseous density of sulfur hexafluoride in each gas tank in the detection switch cabinet, on -off controller is used for receiving the gaseous density data of sulfur hexafluoride, and arbitrary the gaseous density of sulfur hexafluoride is less than when predetermineeing the threshold value in the gas tank, and it is closed to control a controllable switch, controllable switch, controllable switch's controlled end with on -off controller's output is connected, the door -trip, the door -trip is installed in the inboard of cubical switchboard, works as when the cabinet door of cubical switchboard is opened, the door -trip is closed, the alarm, the alarm with controllable switch the door -trip series connection. This alarm device, simple structure, with low costs, long service life possesses alarm function, only reaches the spot when opening the cabinet door as on -the -spot fault handling personnel, and this alarm device just can report an emergency and ask for help or increased vigilance, energy -conserving and can not lead to the fact noise pollution to the surrounding environment.
Description
Technical field
The utility model relates to switch cubicle monitoring field, specifically a kind of sulfur hexafluoride switch cabinet infrabar alarm device.
Background technology
Along with the development of urban construction and distribution network transform, the quantity of power cable line in power distribution network gets more and more, the application of ring main unit is also day by day extensive, and pushing forward comprehensively especially along with distribution network automated construction, 10kV switch cubicle quantity presents the growth of explosion type.The 10kV switch cubicle overwhelming majority of current application is SF6 (sulfur hexafluoride) all-insulation inflation cabinet, it is high that this gas-filling cabinet has insulating property, equipment volume is little, safeguard the advantages such as simple, along with the extensive application of this gas-filling cabinet, related defects work for the treatment of is also increasing, wherein low outstanding with the leak gas SF6 air pressure that causes of gas tank.When switch cubicle SF6 air pressure is lower than normal value, switch disable operates.If now because line fault or scheduled overhaul need operating switch, from then on can only disconnect by switch higher level switch, if careless this switch of hot line job, will device damage be caused, even personal injury.
At present, widely used all kinds of SF6 infrabar alarm device is roughly divided into following two kinds, the first, adopts simple mechanical indicator to carry out alarm, because mechanical indicator does not possess alarm function, then to field staff without obvious alarming effect; Because this series products is generally by the whether alarm or meet operation requirements of the instruction determining apparatus of pointer between red and green area, check by means of only onsite troubleshooting personnel the state being often difficult to judgment device when pointer is at critical localisation; The device adopting mechanical indicator to carry out alarm is difficult to check when throwing light on not enough, and this just result in exists certain potential safety hazard when night carries out execute-in-place; Because the sensitivity of mechanical indicator is poor, need regular to carry out zero correction, if regularly do not correct, then may occur situation about report by mistake, the loss such as device damage or power failure range expansion may be caused; The second, adopt the mode of sound and light alarm to report to the police, when the air pressure of SF6 is too low, then carry out sound and light alarm, the defect of this kind of method is---when fault handling personnel do not reach the spot, acoustic-optic alarm processes in warning always, not only wastes electric energy and causes noise pollution to surrounding environment.
Utility model content
For this reason, the utility model proposes a kind of sulfur hexafluoride switch cabinet infrabar alarm device, it is upper solution or alleviation the above-mentioned problems in the prior art at least partly.
The technical solution adopted in the utility model is as follows:
A kind of sulfur hexafluoride switch cabinet infrabar alarm device, comprising:
Sulfur hexafluoride density sensor, for the density of sulfur hexafluoride gas in gas tank each in detector switch cabinet;
On-off controller, for receiving the density data of described sulfur hexafluoride gas, and when the density of sulfur hexafluoride gas is lower than predetermined threshold value in arbitrary described gas tank, controlling a gate-controlled switch and closing;
Described gate-controlled switch, the controlled end of described gate-controlled switch is connected with the output terminal of described on-off controller;
Door switch, described door switch is arranged on the inner side of switch cubicle, and when the cabinet door of described switch cubicle is opened, described door switch closes;
Alarm, described alarm and described gate-controlled switch, described door switch are connected in series.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described alarm is provided with stop button, and after pressing described stop button, described alarm stops alarm.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described alarm is audible-visual annunciator.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described alarm comprises at least one in hummer and LED.
Described sulfur hexafluoride switch cabinet infrabar alarm device, the door lock of described switch cubicle is fixed a Metallic rod, described door switch is installed on the top of described Metallic rod.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described door switch is mechanical trip limit switch.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described sulfur hexafluoride density sensor internal comprises infrared probe or thermal conductance probe.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described sulfur hexafluoride density sensor internal also comprises signal conditioning circuit, the output terminal that input end and described infrared probe or the thermal conductance of described signal conditioning circuit are popped one's head in is connected, and the output terminal of described signal conditioning circuit is as the output terminal of described sulfur hexafluoride density sensor.
Described sulfur hexafluoride switch cabinet infrabar alarm device, described sulfur hexafluoride density sensor is installed in described gas tank, described on-off controller is installed on outside described gas tank, the sidewall of described gas tank is provided with aviation plug, and described sulfur hexafluoride density sensor is connected with described on-off controller through described aviation plug by Signal transmissions shielded conductor.
Technique scheme of the present utility model has the following advantages compared to existing technology:
The sulfur hexafluoride switch cabinet infrabar alarm device that the utility model provides, when the density of sulfur hexafluoride gas in gas tank arbitrary in switch cubicle is lower than predetermined threshold value, gate-controlled switch closes; When the cabinet door of switch cubicle is opened, door switch closes; Alarm and described gate-controlled switch, described door switch are connected in series, that is and if only if gate-controlled switch is closed and door switch closes time, alarm just can be reported to the police.The sulfur hexafluoride switch cabinet infrabar alarm device that the utility model provides, structure is simple, cost is low, long service life, and the conventional alarm device solving pointer-type by arranging alarm does not possess alarm function, needs to carry out pointer the problem of zero correction; By arranging the on off state of door switch detecting box door, when closing owing to only having door switch, the alarm device ability alarm that the utility model provides, that is only have when onsite troubleshooting personnel reach the spot open cabinet door time, this alarm device could alarm, and it is energy-conservation and easily surrounding environment is caused to the problem of noise pollution that this does not just solve traditional sound and light alarm device.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the schematic diagram according to sulfur hexafluoride switch cabinet infrabar alarm device in the utility model embodiment;
Fig. 2 is the schematic diagram according to sulfur hexafluoride switch cabinet infrabar alarm device in another embodiment of the utility model;
Fig. 3 is the electrical block diagram of the sulfur hexafluoride switch cabinet infrabar alarm device according to the utility model embodiment;
In figure, Reference numeral is expressed as: 1-sulfur hexafluoride density sensor, 2-on-off controller, 3-gate-controlled switch, 4-door switch, 5-alarm, and 11-thermal conductance is popped one's head in, 12-signal conditioning circuit.
Embodiment
As shown in Figure 1, as the sulfur hexafluoride switch cabinet infrabar alarm device of the utility model embodiment, comprising:
Sulfur hexafluoride density sensor 1, for the density of sulfur hexafluoride gas in gas tank each in detector switch cabinet.During concrete use, described sulfur hexafluoride density sensor 1 can adopt infrared type sulfur hexafluoride density sensor, heat-conducted sulfur hexafluoride density sensor or other can detect the gas sensor of sulfur hexafluoride density.Described sulfur hexafluoride density sensor 1 inside can comprise infrared probe or thermal conductance probe 11 or other the probe can responding to sulfur hexafluoride density change, and with the signal conditioning circuit 12 that is connected of popping one's head in.
Input end and described infrared probe or the thermal conductance of described signal conditioning circuit 12 pop one's head in 11 or the other types output terminal of popping one's head in be connected, the output terminal of described signal conditioning circuit 12 is as the output terminal of described sulfur hexafluoride density sensor 1.Signal conditioning circuit 12 can have the feature of temperature compensation, change the density signal of sulfur hexafluoride gas into current signal, and after filtering, amplify, obtain on-off controller 2 acceptable signal after current/voltage process, make to measure more accurately and reliably.Sulfur hexafluoride density sensor 1 described in sulfur hexafluoride switch cabinet infrabar alarm device shown in Fig. 2 comprises thermal conductance probe 11 and signal conditioning circuit 12.
On-off controller 2, the input end of described on-off controller 2 is connected with the output terminal of described sulfur hexafluoride density sensor 1, for receiving the density data of described sulfur hexafluoride gas, and when the density of sulfur hexafluoride gas is lower than predetermined threshold value in arbitrary described gas tank, controls a gate-controlled switch 3 and close.
Described gate-controlled switch 3, the controlled end of described gate-controlled switch 3 is connected with the output terminal of described on-off controller 2.Described gate-controlled switch 3 can adopt the controllable switch element such as triode to realize.
Door switch 4, described door switch 4 is arranged on the inner side of switch cubicle, and when the cabinet door of described switch cubicle is opened, described door switch 4 closes.
Alarm 5, described alarm 5 is connected in series with described gate-controlled switch 3, described door switch 4.
Fig. 3 shows the structural representation that controllable switch S 1, door switch S2 and alarm H are connected in series, alarm in figure schematically adopts hummer to represent, by can clearly find out in figure only have controllable switch S 1 and door switch S2 simultaneously closed time, circuit could be connected, and alarm H could report to the police.
In actual use, sulfur hexafluoride density sensor 1 can be installed in described gas tank, and described controller 2 can be installed on outside described gas tank, and described sulfur hexafluoride density sensor 1 is connected by Signal transmissions shielded conductor with described on-off controller 2.Can the density of SF6 gas in direct-detection gas tank by sulfur hexafluoride density sensor 1 to be installed in gas tank, simultaneously, the sidewall of gas tank can arrange aviation plug, sulfur hexafluoride density sensor 1 is connected with on-off controller 2 through this aviation plug by described Signal transmissions shielded conductor, and this just ensure that the leakproofness of gas tank.
The sulfur hexafluoride switch cabinet infrabar alarm device that the present embodiment provides, when the density of sulfur hexafluoride gas in gas tank arbitrary in switch cubicle is lower than predetermined threshold value, gate-controlled switch 3 closes; When the cabinet door of switch cubicle is opened, door switch 4 closes; Alarm 5 and described gate-controlled switch 3, described door switch 4 are connected in series, that is and if only if gate-controlled switch 3 is closed and door switch 4 closes time, alarm 5 just can be reported to the police.
The sulfur hexafluoride switch cabinet infrabar alarm device that the utility model provides, structure is simple, cost is low, long service life, and the conventional alarm device solving pointer-type by arranging alarm 5 does not possess alarm function, needs to carry out pointer the problem of zero correction; By arranging the on off state of door switch 3 detecting box door, when closing owing to only having door switch 3, the alarm device ability alarm that the present embodiment provides, that is only have when onsite troubleshooting personnel reach the spot open cabinet door time, this alarm device could alarm, and it is energy-conservation and easily surrounding environment is caused to the problem of noise pollution that this does not just solve traditional sound and light alarm device.
On the basis of such scheme, described alarm 5 can also be provided with stop button, after pressing described stop button, described alarm 5 stops alarm.In breakdown maintenance, personnel reach the spot, and after finding fault, namely can press stop button, alarm 5 stops alarm, and this just saves electric energy and can not cause noise pollution to surrounding environment.
On the basis of such scheme, described alarm 5 can be audible-visual annunciator, and described alarm 5 can comprise at least one in hummer and LED.Ordinary priority adopts the mode of buzzer alert, because which is not subject to the restriction of installation site and light condition, can continue to provide alarming effect under the condition do not had a power failure, when having a power failure, then operating switch is not by the restriction of SF6 air pressure, just also without the need to reoffering alarm signal.Carry out the mode of alarm according to LED, then described LED should be arranged on the obvious position of onsite troubleshooting personnel.Those skilled in the art should be appreciated that the selection of described alarm 5 is diversified, and as flashing lamp, electric bell etc. are also fine, various mode can be used alone and also can combinationally use, as long as the function that can realize alarm is then passable.
On the basis of such scheme, the door lock of described switch cubicle is fixed a Metallic rod, described door switch 4 is installed on the top of described Metallic rod.This door switch 4 is installed on the inner side of switch cubicle, the top of door lock Metallic rod, is convenient to the state of detector switch cabinet door, and testing result reliability is high, and to the impact of described door switch 4 when avoiding cabinet door switch, is conducive to the serviceable life of extension device.As a kind of specific implementation, described door switch 4 can be mechanical trip limit switch.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain that the utility model creates.
Claims (9)
1. a sulfur hexafluoride switch cabinet infrabar alarm device, is characterized in that, comprising:
Sulfur hexafluoride density sensor (1), for the density of sulfur hexafluoride gas in gas tank each in detector switch cabinet;
On-off controller (2), for receiving the density data of described sulfur hexafluoride gas, and when the density of sulfur hexafluoride gas is lower than predetermined threshold value in arbitrary described gas tank, controlling a gate-controlled switch (3) and closing;
Described gate-controlled switch (3), the controlled end of described gate-controlled switch (3) is connected with the output terminal of described on-off controller (2);
Door switch (4), described door switch (4) is arranged on the inner side of switch cubicle, and when the cabinet door of described switch cubicle is opened, described door switch (4) closes;
Alarm (5), described alarm (5) and described gate-controlled switch (3), described door switch (4) are connected in series.
2. sulfur hexafluoride switch cabinet infrabar alarm device according to claim 1, is characterized in that, described alarm (5) is provided with stop button, and after pressing described stop button, described alarm (5) stops alarm.
3. sulfur hexafluoride switch cabinet infrabar alarm device according to claim 1, is characterized in that, described alarm (5) is audible-visual annunciator.
4., according to the arbitrary described sulfur hexafluoride switch cabinet infrabar alarm device of claim 1-3, it is characterized in that, described alarm (5) comprises at least one in hummer and LED.
5., according to the arbitrary described sulfur hexafluoride switch cabinet infrabar alarm device of claim 1-3, it is characterized in that, the door lock of described switch cubicle is fixed a Metallic rod, described door switch (4) is installed on the top of described Metallic rod.
6., according to the arbitrary described sulfur hexafluoride switch cabinet infrabar alarm device of claim 1-3, it is characterized in that, described door switch (4) is mechanical trip limit switch.
7. according to the arbitrary described sulfur hexafluoride switch cabinet infrabar alarm device of claim 1-3, it is characterized in that, described sulfur hexafluoride density sensor (1) inside comprises infrared probe or thermal conductance probe (11).
8. sulfur hexafluoride switch cabinet infrabar alarm device according to claim 7, it is characterized in that, described sulfur hexafluoride density sensor (1) inside also comprises signal conditioning circuit (12), the pop one's head in output terminal of (11) of input end and described infrared probe or the thermal conductance of described signal conditioning circuit (12) is connected, and the output terminal of described signal conditioning circuit (12) is as the output terminal of described sulfur hexafluoride density sensor (1).
9. according to claim 1-3 or 8 arbitrary described sulfur hexafluoride switch cabinet infrabar alarm devices, it is characterized in that, described sulfur hexafluoride density sensor (1) is installed in described gas tank, described on-off controller (2) is installed on outside described gas tank, the sidewall of described gas tank is provided with aviation plug, and described sulfur hexafluoride density sensor (1) is connected with described on-off controller (2) through described aviation plug by Signal transmissions shielded conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347873.XU CN204791447U (en) | 2015-05-26 | 2015-05-26 | Sulfur hexafluoride cubical switchboard low pressure alarm device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520347873.XU CN204791447U (en) | 2015-05-26 | 2015-05-26 | Sulfur hexafluoride cubical switchboard low pressure alarm device |
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| CN204791447U true CN204791447U (en) | 2015-11-18 |
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| CN201520347873.XU Active CN204791447U (en) | 2015-05-26 | 2015-05-26 | Sulfur hexafluoride cubical switchboard low pressure alarm device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491107A (en) * | 2019-08-19 | 2019-11-22 | 华能四川水电有限公司 | A kind of pressure degrading prediction technique of sulfur hexafluoride, system, storage medium and equipment |
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2015
- 2015-05-26 CN CN201520347873.XU patent/CN204791447U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491107A (en) * | 2019-08-19 | 2019-11-22 | 华能四川水电有限公司 | A kind of pressure degrading prediction technique of sulfur hexafluoride, system, storage medium and equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |