CN203055641U - Distribution transformer adapted to highland environment - Google Patents
Distribution transformer adapted to highland environment Download PDFInfo
- Publication number
- CN203055641U CN203055641U CN 201220575183 CN201220575183U CN203055641U CN 203055641 U CN203055641 U CN 203055641U CN 201220575183 CN201220575183 CN 201220575183 CN 201220575183 U CN201220575183 U CN 201220575183U CN 203055641 U CN203055641 U CN 203055641U
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- Prior art keywords
- low
- voltage
- transformer
- voltage insulation
- closed chamber
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- Expired - Fee Related
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Abstract
The utility model discloses an oil immersed distribution transformer adapted to a highland environment. High-voltage insulating sleeves and low-voltage insulating sleeves are fixedly arranged on the top surface of a transformer box body. A high-voltage insulating sealing chamber and a low-voltage insulating sealing chamber are fixedly formed in the top surface of the transformer box body. The high-voltage insulating sleeves are arranged in the high-voltage insulating sealing chamber, and the low-voltage insulating sleeves are arranged in the low-voltage insulating sealing chamber. Four low-voltage sealing joint holes are formed in the surface of the low-voltage insulating sealing chamber, and are in sealed connection with low-voltage elbow-shaped cable joints. Three high-voltage sealing joint holes are formed in the surface of the high-voltage insulating sealing chamber, and are in sealed connection with high-voltage elbow-shaped cable joints. Independent sealing chambers are formed in high-voltage and low-voltage outlet parts, and cable sealing joints are arranged at cable outlets of the high-voltage and low-voltage sealing chambers, so that the overall dimensions of the insulating sleeves are reduced, and the short-circuit phenomenon of the sleeves caused by damage, cracks, flashover, oil leakage and the like in the highland environment can be avoided.
Description
Technical field
The utility model relates to a kind of distribution transformer technical field, especially is applied in the oil immersion-type distribution transformer of high altitude localities.
Background technology
In the high altitude localities, rarefaction of air and air pressure are low, cause transformer heat radiation difficulty and external insulation performance to reduce easily.The reduction of general air pressure or atmospheric density, in height above sea level 1000 to 5000m scopes, every rising 1000m, i.e. every reduction by the 7.7 ~ 10.5kpa of average gas pressure, external insulation intensity reduces by 8% ~ 13%, therefore needs to consider to strengthen the exterior insulation of transformer.
At present, when height above sea level surpasses 1000m and is lower than 4000m, transformer exterior insulation structure strengthens the nominal creepage distance of sleeve pipe according to the Ba Shen law of classics, strengthen bushing for transformer and sleeve pipe air distance over the ground, to overcome rarefaction of air, the low influence that stability was caused to the transformer external insulation of air pressure.But owing to be subjected to the influence of high altitude localities adverse circumstances, this transformer reasons such as casing damage, crackle, flashover and leakage of oil can occur and cause short trouble, has limited the useful life of transformer, has influenced the security and stability of transformer operation.
Summary of the invention
The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and the distribution transformer of a kind of more reliable adaptation plateau adverse circumstances is provided, and can guarantee the safe and stable operation of transformer on the adverse circumstances of plateau.
The utility model is achieved through the following technical solutions: transformer-cabinet is square structure, connect radiating tube around the periphery of transformer-cabinet, the top surface of transformer-cabinet fixedly installs presses insulating sleeve and low-voltage insulation sleeve pipe, the top surface of transformer-cabinet fixedly installs High-Voltage Insulation closed chamber and low-voltage insulation closed chamber, described high-tension insulating bushing is located in the High-Voltage Insulation closed chamber, and described low-voltage insulation sleeve pipe is located in the low-voltage insulation closed chamber; Low-voltage insulation bobbin seal chamber surface arranges four low pressure seal nipple orifice, and four low pressure seal nipple orifice places all have low pressure elbow cable joint to be tightly connected; High-tension insulating bushing closed chamber surface arranges three high pressure sealing nipple orifice, and three high pressure sealing nipple orifice places all have high pressure elbow cable joint to be tightly connected.
The utility model is set up independent closed chamber in the high-low pressure outlet, at height closed chamber cable outlet place adapted cable sealed joint, thoroughly solved the problem of the increasing appearance of external insulation distance and creepage nominal distance, dwindle the overall dimension of highlands insulating sleeve, can not occur the short circuit phenomenon that causes because of reasons such as breakage, crackle, flashover and leakage of oils at the altitude environment setting of casing.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Among the figure: 1. radiating tube; 2. oil level indicator; 3. high-tension insulating bushing closed chamber; 4. high-tension insulating bushing; 5. high pressure elbow cable joint; 6,7,8,9. low pressure seal nipple orifice; 10. low pressure elbow cable joint; 11. low-voltage insulation sleeve pipe; 12. low-voltage insulation bobbin seal chamber; 14. transformer-cabinet; 17,18,19. high pressure sealing nipple orifice.
Embodiment
Among Fig. 1, radiating tube 1, oil level indicator 2, high-tension insulating bushing 4, low-voltage insulation sleeve pipe 11 and transformer-cabinet 14 are basic building block of the present utility model.Transformer-cabinet 14 is square structures, and proper alignment radiating tube 1 around the periphery of transformer-cabinet 14, and radiating tube 1 is welded on transformer-cabinet 14 4 sides.Oil level indicator 2 is installed in the groove of transformer-cabinet 14 top surfaces, and is kept interference fit.High-tension insulating bushing 4 and low-voltage insulation sleeve pipe 11 adopt to be threaded and are installed in the transformer-cabinet 14 top surface holes.High-Voltage Insulation closed chamber 3 and low-voltage insulation closed chamber 12 all are connected on transformer-cabinet 14 top surfaces by thread forms.High-tension insulating bushing 4 is installed in the High-Voltage Insulation closed chamber 3, and low-voltage insulation sleeve pipe 11 is installed in the low-voltage insulation closed chamber 12.High-tension insulating bushing closed chamber 3 and low-voltage insulation closed chamber 12 be respectively with high-tension insulating bushing 4, low-voltage insulation sleeve pipe 11 and isolation, thereby stopped to cause short circuit problem because of the reasons such as casing damage, crackle, flashover and leakage of oil that environment causes.Owing to the sealing function of high-tension insulating bushing closed chamber 3 and low-voltage insulation bobbin seal chamber 12 makes high-tension insulating bushing 4 and low-voltage insulation sleeve pipe 11 needn't consider as traditional structure that height above sea level strengthens the nominal creepage distance of sleeve pipe, dwindled the overall dimension of sleeve pipe, thereby made that sleeve structure obtains simplifying.
Four low pressure seal nipple orifice 6,7,8,9 that 12 surfaces arrange in low-voltage insulation bobbin seal chamber, these four low pressure seal nipple orifice 6, the 7,8, the 9th, the wiring hole that inner low-voltage insulation sleeve pipe 11 is connected with extraneous service cable, all be tightly connected with low pressure elbow cable joint 10 at four low pressure seal nipple orifice 6,7,8,9 places, reach air insulated degree of protection IP68, low pressure elbow cable joint 10 adopts the structure with the lightning arrester one, and these four low pressure seal nipple orifice 6,7,8,9 height are consistent with the height of low pressure elbow cable joint 10.
On high-tension insulating bushing closed chamber 3 surfaces three high pressure sealing nipple orifice 17,18,19 are set, these three high pressure sealing nipple orifice 17, the 18, the 19th, internal high pressure insulating sleeve 4 and the wiring hole that is connected extraneous service cable, all be tightly connected with high pressure elbow cable joint 5 at three high pressure sealing nipple orifice 17,18,19 places, reach air insulated degree of protection IP68, high pressure elbow cable joint 5 adopts the structure with the lightning arrester one, and these three high pressure sealing nipple orifice 17,18,19 height are consistent with the height of high pressure elbow cable joint 5.Avoided circuit intertwining, the phase mutual interference of high-tension insulating bushing closed chamber 3 with 12 inside, low-voltage insulation bobbin seal chamber.
The material of High-Voltage Insulation closed chamber 3 and low-voltage insulation closed chamber 12 can be selected the Q235C steel for use, handles through alramenting, makes it more can adapt to high height above sea level adverse circumstances.Break silicone jelly in the part that High-Voltage Insulation closed chamber 3 and low-voltage insulation closed chamber 12 are threaded, better play the effect of waterproof insulation sealing.
Claims (2)
1. distribution transformer that adapts to altitude environment, transformer-cabinet (14) is square structure, connect radiating tube (1) around the periphery of transformer-cabinet (14), the top surface of transformer-cabinet (14) fixedly installs presses insulating sleeve (4) and low-voltage insulation sleeve pipe (11), it is characterized in that: the top surface of transformer-cabinet (14) fixedly installs High-Voltage Insulation closed chamber (3) and low-voltage insulation closed chamber (12), described high-tension insulating bushing (4) is located in the High-Voltage Insulation closed chamber (3), and described low-voltage insulation sleeve pipe (11) is located in the low-voltage insulation closed chamber (12); Surface, low-voltage insulation bobbin seal chamber (12) arranges four low pressure seal nipple orifice, and four low pressure seal nipple orifice places all have low pressure elbow cable joint (10) to be tightly connected; High-tension insulating bushing closed chamber (3) surface arranges three high pressure sealing nipple orifice, and three high pressure sealing nipple orifice places all have high pressure elbow cable joint (5) to be tightly connected.
2. a kind of distribution transformer that adapts to altitude environment according to claim 1, it is characterized in that: the height of described four low pressure seal nipple orifice is consistent with the height of low pressure elbow cable joint (10), and the height of described three high pressure sealing nipple orifice is consistent with the height of high pressure elbow cable joint (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575183 CN203055641U (en) | 2012-11-05 | 2012-11-05 | Distribution transformer adapted to highland environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220575183 CN203055641U (en) | 2012-11-05 | 2012-11-05 | Distribution transformer adapted to highland environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203055641U true CN203055641U (en) | 2013-07-10 |
Family
ID=48738569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220575183 Expired - Fee Related CN203055641U (en) | 2012-11-05 | 2012-11-05 | Distribution transformer adapted to highland environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203055641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761916A (en) * | 2016-05-18 | 2016-07-13 | 李理 | Novel intelligent three-phase power transformer capable of being remotely controlled |
-
2012
- 2012-11-05 CN CN 201220575183 patent/CN203055641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761916A (en) * | 2016-05-18 | 2016-07-13 | 李理 | Novel intelligent three-phase power transformer capable of being remotely controlled |
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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 |
Granted publication date: 20130710 Termination date: 20141105 |
|
| EXPY | Termination of patent right or utility model |