CN202434942U - Mining flame-proof and pressurized high-voltage power distribution device - Google Patents
Mining flame-proof and pressurized high-voltage power distribution device Download PDFInfo
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- CN202434942U CN202434942U CN2011203731636U CN201120373163U CN202434942U CN 202434942 U CN202434942 U CN 202434942U CN 2011203731636 U CN2011203731636 U CN 2011203731636U CN 201120373163 U CN201120373163 U CN 201120373163U CN 202434942 U CN202434942 U CN 202434942U
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Abstract
The utility model relates to a mining flame-proof and pressurized high-voltage power distribution device. It is characterized in that the mining flame-proof and pressurized high-voltage power distribution device is provided with a flame-proof shell. The flame-proof shell is divided into a secondary meter flame-proof cavity, a first flame-proof and positive pressure inflation cavity, a second flame-proof and positive pressure inflation cavity and a flame-proof DC operation power source cavity/flame-proof wire outlet cavity. Primary loop electrifying elements are arranged both in the first flame-proof and positive pressure inflation cavity and the second flame-proof and positive pressure inflation cavity. The main wiring of the primary loop adopts the fixed-type wiring. The primary loop electrifying elements and buses are arranged in the first flame-proof and positive pressure inflation cavity and the second flame-proof and positive pressure inflation cavity. The first flame-proof and positive pressure inflation cavity and the second flame-proof and positive pressure inflation cavity are both filled with inert gases. A gas isolation supervisory relay is arranged outside the first flame-proof and positive pressure inflation cavity and the second flame-proof and positive pressure inflation cavity.
Description
Technical field
The utility model belongs to the power distribution equipment field in the electric power system, particularly a kind of mine explosion-suppression positive pressure type high voltage distribution installation of holding concurrently.
Background technology
Insulation technology plays the important and pivotal role in the evolution of high-tension switch cabinet, and the main insulation technology that uses in the high-tension switch cabinet at present has two kinds of air insulation, gas-insulateds.
Rely on outside air as dielectric fully between high-tension switch cabinet high-voltage charged body based on the air insulation technology; The part electrified body directly contacts with air in the switch cubicle; This is a most popular technology in high-tension switch cabinet; Be characterized in that technology maturation, simple in structure being convenient to safeguard that shortcoming is that electric property can change and change because of surrounding environment, height above sea level.
Based on the high-tension switch cabinet (C-GIS) of gas insulation technology be with high pressure primary element and bus in airtight casing, the gas that the filling electric property is stable in the case is as the dielectric of switchgear.Its advantage is: electric property does not receive the influence of external environment, and electric property stabilizing equipment reliability is high.
At present, the flame-proof mine high voltage distribution installation that uses in the place that explosion risk is arranged under the coal mine adopts the air insulation technology, and is as shown in Figure 1, and Fig. 1 is flame-proof mine high voltage distribution installation front overall schematic traditionally.As shown in Figure 2, Fig. 2 is flame-proof mine high voltage distribution installation arrangements of elements profile traditionally.As shown in Figure 3, Fig. 3 is a main line element of flame-proof mine high voltage distribution installation connection layout traditionally.High-tension switch cabinet primary circuit main electrical scheme has fixed and two kinds of structures of handcart-type.At present, the flame-proof mine high voltage distribution installation that uses in the place that explosion risk is arranged under the coal mine adopts stationary structure.
Comprehensive mechanical coal mining has been realized in present domestic colliery basically; Power supply network is through being deep into each production link of down-hole; The electric power system of high reliability is the assurance that high-yield and high-efficiency is realized in the colliery, under coal mine, adopts stable performance in the supply network, adaptability is strong, maintenance is few, intelligent high power supply unit is the key that guarantees the safety of coal mines electricity consumption.But the flame-proof mine high voltage distribution installation that under coal mine, uses at present is subject to multiple factor affecting at aspects such as reliability and fail safes.
What the flame-proof mine high voltage distribution installation adopted at present is the air insulation technology, and its technology maturation, simple in structure being convenient to are safeguarded, but its electric property can change and change because of surrounding environment, height above sea level.
When this device interior of infiltration of damp under the coal mine, may the generation cavity implode destroy the components and parts in the equipment, thereby influence power supply safety and the ordinary production under the coal mine.
Narrow space under the coal mine, ventilate not freely, dirty air will inevitably aggravate the pollution of insulator, sleeve pipe and bus in the mine explosion-suppression electric equipment, will cause power equipment generation insulation flashover when serious, and is accidents caused.
The shadow noon of air humidity, the conductive exothermal position formation condensation that in airtight cavity, is exposing owing to altitude temperature difference effect; Simultaneously, the short distance high (creepage distance) on insulation crust surface is reduced, cause surface discharge phenomena because gas discharge parameter increases with the increase of absolute humidity.
Along with the rising of height above sea level, gas density reduces, and has increased the air gap again by the possibility of electrical breakdown, causes the insulation level of equipment to descend.
Major loop of flame-proof mine high voltage distribution installation adopts the plug-in type wiring; In the day-to-day operation process; Degradation phenomenon under the dynamic and static contact slap of switch, the operating spring electric property appears easily; Cause contact or point of attachment temperature rise to surpass ambient temperature, cause switch contact the heating phenomenon to occur, accident such as also possibly cause that switchgear burns when serious.
The utility model content
For addressing the above problem, the utility model proposes a kind of mine explosion-suppression positive pressure type high voltage distribution installation of holding concurrently, and solves the potential safety hazard of mine explosion-suppression device traditionally.
For realizing above-mentioned utility model purpose; The utility model proposes a kind of mine explosion-suppression positive pressure type high voltage distribution installation of holding concurrently; It is characterized in that; This device has the flame proof housing, is divided into flame proof direct current operative power source chamber/flame proof wire cavity, first flame proof hold concurrently malleation inflatable chamber, second flame proof hold concurrently malleation inflatable chamber and secondary meter explosion-proof chamber in the flame proof housing; Hold concurrently malleation inflatable chamber and second flame proof of said first flame proof held concurrently and is equipped with the primary circuit live components in the malleation inflatable chamber; Said primary circuit main electrical scheme adopts fixed wiring, and primary circuit live components and bus place said first flame proof to hold concurrently in the malleation inflatable chamber and said second flame proof is held concurrently in the malleation inflatable chamber;
Hold concurrently malleation inflatable chamber and said second flame proof of said first flame proof held concurrently and all is filled with inert gas in the malleation inflatable chamber, and said first flame proof malleation inflatable chamber or second flame proof malleation inflatable chamber outside of holding concurrently of holding concurrently is provided with the gas-insulated supervisory relay.
The fixed mode of connection of said primary circuit main electrical scheme is divided into inlet wire+PT mode and outlet/liaison method.
Said inlet wire+PT mode loop band electric device next time comprises main bus bar, tri-station isolating switch, fuse and voltage transformer; Said outlet/liaison method loop band electric device next time comprises main bus bar, tri-station isolating switch and vacuum circuit-breaker.
First flame proof under said inlet wire+PT mode is held concurrently and is provided with voltage transformer in the malleation inflatable chamber; First flame proof under said outlet/liaison method is held concurrently and is provided with circuit breaker in the malleation inflatable chamber.
Said second flame proof is held concurrently and is provided with main bus bar and tri-station isolating switch in the malleation inflatable chamber.
Said tri-station isolating switch all is arranged on the end of incoming cables of primary circuit main electrical scheme.
Be provided with direct current operative power source in the flame proof direct current operative power source chamber under said inlet wire+PT mode, be provided with cable outlet in the flame proof wire cavity under said outlet/liaison method.
Be provided with computer integrated protection equipment in the secondary meter explosion-proof chamber under said inlet wire+PT mode; Be provided with computer integrated protection equipment and circuit breaker operation mechanism in the secondary meter explosion-proof chamber under said outlet/liaison method.
The utlity model has following characteristics: a major loop adopts fixed wiring to solve major loop of flame-proof mine high voltage distribution installation and uses the easy problem that causes the contact fault of plug-in type wiring, thereby has improved the reliability of equipment operation.The primary element of positive pressure type high voltage distribution installation all is sealed in the malleation inflatable chamber of sealing because mine explosion-suppression is held concurrently, and makes that element is in the malleation clean gas all the time in the chamber in, and electric property does not receive the influence of air humidity and height above sea level, thereby electric property is stablized.The pure N of filling in the malleation inflatable chamber
2, the insulation fault of having avoided causing and the oxidation corrosion of metalwork because of filthy, condensation, therefore, reliability is high.
The malleation inflatable chamber is furnished with the gas-insulated supervisory relay, when the pressure in the air cavity or density change when having influence on the switch cubicle electric property, can in time send and report to the police and sub-gate signal, avoids the generation and the expansion of electric accident.The two air cavity structure highly versatiles of modularization, the maintenance of being convenient to air cavity and equipment operation do not influence the work of other devices when changing anterior air cavity.The hold concurrently end of incoming cables of positive pressure type high voltage distribution installation of mine explosion-suppression is furnished with tri-station isolating switch, with isolation features and grounding function unification, has reduced electric component, has made things convenient for the maintenance of equipment.The secondary operation power supply adopts direct current supply, can guarantee the reliably working of circuit breaker in any case.
Description of drawings:
Fig. 1 is the positive overall schematic of flame-proof mine high voltage distribution installation traditionally;
Fig. 2 is flame-proof mine high voltage distribution installation arrangements of elements profile traditionally;
Fig. 3 is main line line graph of flame-proof mine high voltage distribution installation traditionally;
The flame-proof mine high voltage distribution installation cavity front schematic view that Fig. 4 proposes for the utility model;
Flame-proof mine high voltage distribution installation outlet/contact scheme arrangements of elements profile that Fig. 5 proposes for the utility model;
Flame-proof mine high voltage distribution installation outlet/main line line graph of contact scheme that Fig. 6 proposes for the utility model;
Flame-proof mine high voltage distribution installation inlet wire+PT scheme arrangements of elements profile that Fig. 7 proposes for the utility model;
Flame-proof mine high voltage distribution installation inlet wire+main line line graph of PT scheme that Fig. 8 proposes for the utility model;
The mine explosion-suppression that Fig. 9 proposes for the utility model 10kV electric power system figure of positive pressure type high voltage distribution installation that holds concurrently.
Specific embodiments:
Below in conjunction with embodiment and Figure of description the utility model is further specified.
Flame-proof mine high voltage distribution installation cavity front schematic view as shown in Figure 4, that Fig. 4 proposes for the utility model.The power distribution equipment of the utility model adopts the two air cavity structures of modularization.Comprise: flame proof wire cavity 14/ flame proof direct current operative power source chamber 14, first flame proof hold concurrently malleation inflatable chamber 12, second flame proof hold concurrently malleation inflatable chamber 13 and secondary meter explosion-proof chamber 11.First flame proof malleation inflatable chamber 12 and second flame proof malleation inflatable chamber 13 of holding concurrently of holding concurrently is referred to as malleation inflatable chamber 7.The pure N2 of filling in the malleation inflatable chamber 7.In the malleation inflatable chamber 7 outside gas-insulated supervisory relays 10 of installing, the pressure and the density of keeping watch on the inner N2 of malleation inflatable chamber.
Flame-proof mine high voltage distribution installation outlet/contact scheme arrangements of elements profile as shown in Figure 5, that Fig. 5 proposes for the utility model.Flame-proof mine high voltage distribution installation outlet/main line line graph of contact scheme as shown in Figure 6, that Fig. 6 proposes for the utility model.Can know that from Fig. 5 and Fig. 6 element comprises: main bus bar 1, voltage transformer 3 (PT), tri-station isolating switch 8, plug-in fuse 9 and gas insulation monitoring relay 10.Flame-proof mine high voltage distribution installation inlet wire+PT scheme arrangements of elements profile as shown in Figure 7, that Fig. 7 proposes for the utility model.Flame-proof mine high voltage distribution installation inlet wire+main line line graph of PT scheme as shown in Figure 8, that Fig. 8 proposes for the utility model.Element comprises: main bus bar 1, vacuum circuit-breaker 2, voltage transformer 3 (PT), current transformer 4 (CT) and connector 5.The primary circuit main electrical scheme adopts stationary structure, has solved to use the plug-in type wiring to be prone to cause the problem of contact fault, thereby has improved the reliability of equipment operation, is divided into " inlet wire+PT " and " outlet/contact " two schemes according to the functional requirement main electrical scheme.
The end of incoming cables is established tri-station isolating switch 8 and is used for electrical isolation and maintenance, and isolating switch is provided with " closing ", " branch ", " ground connection " three kinds of states, makes things convenient for the operation and the maintenance of electrical system equipment.
Adopt gas insulation technology; According to the difference of scheme with the primary circuit live components: main bus bar 1, tri-station isolating switch 8, vacuum circuit-breaker 2, voltage transformer 3 and interelement busbar arrangement are in malleation inflatable chamber 7; Solving receive environment and the height above sea level that electric component exists in the flame-proof mine high voltage distribution installation influences problem, thereby improves the fail safe of flame-proof mine high voltage distribution installation.
The secondary operation power supply is provided by big capacity PT, adopts dc operation, by the direct-current switch power supply in the direct current operative power source explosion-proof chamber that is arranged in " inlet wire+PT " scheme rear lower to microcomputer complex protection operating power is provided, to circuit breaker power supply divide-shut brake power supply.
Malleation inflatable chamber 7, cable turnover line, secondary Microcomputer Protection etc. all have flameproof enclosure 6 protection, guarantee that whole device meets service condition under the coal mine.
Newly-built working section sub station is one under certain mine, that electric substation adopts is novel " mine explosion-suppression hold concurrently positive pressure type high voltage distribution installation " 12, wherein inlet wire+2 in PT cabinet, 3 in cabinet of contact, 3 in contact+outlet cabinet, outlet cabinet 4 are used for the power supply of loading in the exploiting field.As shown in Figure 9, the mine explosion-suppression that Fig. 9 proposes for the utility model 10kV electric power system figure of positive pressure type high voltage distribution installation that holds concurrently.The busbar voltage of this electric power system is 10kv, and each section bus comprises tri-station isolating switch, fuse/circuit breaker, PT/CT and overvoltage protection/zero sequence current mutual inductor.This electric power system is explained according to 1 pair of technical scheme of following table.
Table 1
The equipment normal workflow as follows (with inlet wire 1 work, inlet wire 2 charged subsequent use be example):
1) send preceding each equipment in the detection native system of electricity all to locate serviceable condition;
2) each loop three station is isolated 8 switches and be in " closing " position, circuit breaker is in " branch " position;
3) by the power supply of inlet wire 1 native system, the external power source that the acquisition of secondary DC power supply is provided by inlet wire PT cabinet AH101, the circuit breaker 2 in each loop is in the permission "on" position;
4) one section bus contact cabinet AH102 circuit breaker 2 closes a floodgate, and contact cabinet AH1062 circuit breaker 2 closes a floodgate between one, two section bus;
5) one, two section bus is charged, and the breaking-closing operating of circuit breaker 2 is carried out in each outgoing loop according to the load need for electricity.
6) when inlet wire 1 power supply disappear or fault constantly, secondary operation and breaker open operation power supply are provided by the direct current backup battery, guarantee the reliable separating brake of each circuit breaker.The direct current backup battery can guarantee that two sections bus contact cabinet AH202 circuit breakers 2 close a floodgate, and guarantee the continuous of down-hole electricity consumption simultaneously.
Power consumption equipment when maintenance workflow is (overhauling with maintenance AH104 cabinet load is example) as follows:
1) AH104 cabinet breaker 2 separating brakes;
2) AH104 cabinet three stations are isolated 8 switches and are in " branch " position;
3) AH104 cabinet breaker 2 closes a floodgate;
4) AH104 cabinet three stations are isolated 8 switches and are in " ground connection " position;
5) beginning inlet wire overhaul of the equipments.
Appliance arrangement when maintenance workflow is (overhauling with maintenance AH104 cabinet is example) as follows:
1) AH104 cabinet breaker 2 separating brakes;
2) AH104 cabinet three stations are isolated 8 switches and are in " branch " position;
3) open the flame proof door and carry out the device maintenance.
The utlity model has following advantage:
1) the mine explosion-suppression type high voltage distribution installation of holding concurrently adopts alternating current operation, enable manual divide-shut brake only when the power supply dead electricity, and the utility model adopts dc operation, can guarantee the mine explosion-suppression positive pressure type high voltage distribution installation reliable electronic divide-shut brake under power supply dead electricity situation of holding concurrently.
2) the mine explosion-suppression type high voltage distribution installation of holding concurrently does not have special-purpose ground connection cutter, needs interim ground connection of setting up the maintenance end during overhaul of the equipments, and the utility model is provided with the ground connection cutter and makes things convenient for apparatus maintenance.
3) the mine explosion-suppression type high voltage distribution installation of holding concurrently is an air insulation; The long-term back inner member that uses is increased with the increase of service time by probability of failure that dust, moisture influences element; The utility model main element places in the malleation inflatable chamber; The element stable working state greatly reduces the number of times of maintenance of equipment.
4) the mine explosion-suppression type high voltage distribution installation primary connection of holding concurrently is a plug-in type, and long-term to use the back contact to be prone to loosening, causes electric loose contact, and the utility model adopts fixed wiring, starts from long-term use.
The hold concurrently mounting means of positive pressure type high voltage distribution installation of mine explosion-suppression is identical with the flame-proof mine high voltage distribution installation; But plant maintenance is simple, the electric power system reliability is high; After particularly disaster takes place in the colliery; Only need all can restore electricity, accelerated the speed of resuming production in the colliery the mine explosion-suppression positive pressure type high voltage distribution installation simple-to-maintain of holding concurrently.
The mine explosion-suppression positive pressure type high voltage distribution installation of holding concurrently relatively sees the following form 2 than flame-proof mine high voltage distribution installation basic mechanical design feature:
Table 2
It should be noted last that above embodiment is only unrestricted in order to the technical scheme of explanation the utility model.Although the utility model is specified with reference to embodiment; Those of ordinary skill in the art is to be understood that; The technical scheme of the utility model is made amendment or is equal to replacement; The spirit and the scope that do not break away from the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.
Claims (8)
1. mine explosion-suppression positive pressure type high voltage distribution installation of holding concurrently; It is characterized in that; This device has the flame proof housing, is divided into secondary meter explosion-proof chamber, first flame proof hold concurrently malleation inflatable chamber, second flame proof hold concurrently malleation inflatable chamber and flame proof direct current operative power source chamber/flame proof wire cavity in the flame proof housing; Hold concurrently malleation inflatable chamber and second flame proof of said first flame proof held concurrently and is equipped with the primary circuit live components in the malleation inflatable chamber; Said primary circuit main electrical scheme adopts fixed wiring, and primary circuit live components and bus place said first flame proof to hold concurrently in the malleation inflatable chamber and said second flame proof is held concurrently in the malleation inflatable chamber;
Hold concurrently malleation inflatable chamber and said second flame proof of said first flame proof held concurrently and all is filled with inert gas in the malleation inflatable chamber, and said first flame proof malleation inflatable chamber or second flame proof malleation inflatable chamber outside of holding concurrently of holding concurrently is provided with the gas-insulated supervisory relay.
2. a kind of mine explosion-suppression according to claim 1 positive pressure type high voltage distribution installation of holding concurrently is characterized in that the fixed mode of connection of said primary circuit main electrical scheme is divided into inlet wire+PT mode and outlet/liaison method.
3. a kind of mine explosion-suppression according to claim 2 positive pressure type high voltage distribution installation of holding concurrently is characterized in that said inlet wire+PT mode loop band electric device next time comprises main bus bar, tri-station isolating switch, fuse and voltage transformer; Said outlet/liaison method loop band electric device next time comprises main bus bar, tri-station isolating switch and vacuum circuit-breaker.
4. a kind of mine explosion-suppression according to claim 2 positive pressure type high voltage distribution installation of holding concurrently is characterized in that, first flame proof under said inlet wire+PT mode is held concurrently and is provided with voltage transformer in the malleation inflatable chamber; First flame proof under said outlet/liaison method is held concurrently and is provided with circuit breaker in the malleation inflatable chamber.
5. a kind of mine explosion-suppression according to claim 1 positive pressure type high voltage distribution installation of holding concurrently is characterized in that, said second flame proof is held concurrently and is provided with main bus bar and tri-station isolating switch in the malleation inflatable chamber.
6. according to claim 3 or the 5 described a kind of mine explosion-suppressions positive pressure type high voltage distribution installation of holding concurrently, it is characterized in that said tri-station isolating switch all is arranged on the end of incoming cables of primary circuit main electrical scheme.
7. a kind of mine explosion-suppression according to claim 2 positive pressure type high voltage distribution installation of holding concurrently; It is characterized in that; Be provided with direct current operative power source in the flame proof direct current operative power source chamber under said inlet wire+PT mode, be provided with cable outlet in the flame proof wire cavity under said outlet/liaison method.
8. a kind of mine explosion-suppression according to claim 2 positive pressure type high voltage distribution installation of holding concurrently is characterized in that, is provided with computer integrated protection equipment in the secondary meter explosion-proof chamber under said inlet wire+PT mode; Be provided with computer integrated protection equipment and circuit breaker operation mechanism in the secondary meter explosion-proof chamber under said outlet/liaison method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203731636U CN202434942U (en) | 2011-10-08 | 2011-10-08 | Mining flame-proof and pressurized high-voltage power distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203731636U CN202434942U (en) | 2011-10-08 | 2011-10-08 | Mining flame-proof and pressurized high-voltage power distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202434942U true CN202434942U (en) | 2012-09-12 |
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ID=46784351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203731636U Withdrawn - After Issue CN202434942U (en) | 2011-10-08 | 2011-10-08 | Mining flame-proof and pressurized high-voltage power distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202434942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364783A (en) * | 2011-10-08 | 2012-02-29 | 天地科技股份有限公司 | Mining explosion suppression and positive voltage high-voltage distribution device |
| CN112366565A (en) * | 2020-11-19 | 2021-02-12 | 刘军 | Explosion-proof high-voltage distribution device for mine |
-
2011
- 2011-10-08 CN CN2011203731636U patent/CN202434942U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364783A (en) * | 2011-10-08 | 2012-02-29 | 天地科技股份有限公司 | Mining explosion suppression and positive voltage high-voltage distribution device |
| CN102364783B (en) * | 2011-10-08 | 2013-04-10 | 天地科技股份有限公司 | Mining explosion suppression and positive voltage high-voltage distribution device |
| CN112366565A (en) * | 2020-11-19 | 2021-02-12 | 刘军 | Explosion-proof high-voltage distribution device for mine |
| CN112366565B (en) * | 2020-11-19 | 2023-05-02 | 城口县高发钡矿有限公司 | Flame-proof type high-voltage distribution device for mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120912 Effective date of abandoning: 20130410 |
|
| RGAV | Abandon patent right to avoid regrant |