CN209168892U - A kind of oil-immersed transformer with primary-secondary type respirator - Google Patents
A kind of oil-immersed transformer with primary-secondary type respirator Download PDFInfo
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- CN209168892U CN209168892U CN201920038332.7U CN201920038332U CN209168892U CN 209168892 U CN209168892 U CN 209168892U CN 201920038332 U CN201920038332 U CN 201920038332U CN 209168892 U CN209168892 U CN 209168892U
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Abstract
The utility model discloses a kind of oil-immersed transformers with primary-secondary type respirator, belong to transformer breather technical field, a kind of oil-immersed transformer with primary-secondary type respirator, including oil-filled transformer body, oil-filled transformer body includes conservator, conservator connecting tube is connected on conservator, and the upper end of conservator connecting tube is located at the inside of conservator, the downside of conservator connecting tube is equipped with filtration drying tank, the threaded upper ends of filtration drying tank are connected with connection upper cover, connection upper cover is connect with the lower end of conservator connecting tube, the lower end of filtration drying tank is fixedly connected with ventilation loading plate, utilize primary-secondary type respirator, it may be implemented to reuse to by filtering and dry air, greatly reduce the replacement frequency of hygroscopic material, greatly reduce the maintenance cost in later period, it ensure that the normal work of oil-immersed transformer, it will not Because the reason of respirator, causes transformer to make moist, it is ensured that the dielectric strength of transformer.
Description
Technical field
The utility model relates to transformer breather technical fields, breathe more specifically to one kind with primary-secondary type
The oil-immersed transformer of device.
Background technique
Oil-immersed transformer is to make cooling medium using oil as transformer primary insulation means, and by oil, certainly such as oil immersion
It is cold, oil, oil immersed water cool and forced oil-circulation etc..The main component of transformer is cored, winding, fuel tank, conservator, breathing
Device, explosion stack (pressure relief valve), radiator, insulating sleeve, tap switch, gas relay, thermometer, oil purifier etc..
Transformer breather is also transformer persorption device, transformer dry agent, large and medium-sized transformer one used in power grid
As be equipped with respirator.This respirator is a kind of glass container equipped with humectant materials such as discoloration silica gel, it acts as
It adsorbs in air and transformation is entered due to the variation of temperature of oil in transformer into the moisture in conservator capsule, diaphragm, removing and drying
Sundries and moisture in the air of device conservator capsule, in case transformer makes moist, to guarantee the dielectric strength of transformer oil.Its work
Principle are as follows: when transformer expanded by heating, breathe out air extra in installation for transformer capsule；It is shunk when temperature of oil in transformer reduces
When, suck outside air.When sucking outside air, the inner transformer oil filtering external air of oil storage box (lubricating cup), then silicon
The moisture absorption that glue will not filtered off, just the transformer oil in transformer makes its water not by the intrusion of moisture content in outside air
Part content is always within standard.
If respirator failure is for a long time replacement, it will lead to not purified air and be directly entered installation for transformer capsule,
After having sucked the impurity in air and moisture, increase transformer transformer oil it is rotten a possibility that.Especially 110kv's or more
Transformer, volume is relatively big, contact surface is also wide, and transformer oil is easier to make moist.If respirator is not installed or is not had for a long time
There is replacement, operations staff just can not judge whether transformer makes moist by the variation of transformer oil colours.Once transformer oil by
Damp and long-term not first, transformer oil insulation reduces, and not only results in power transformer interior fault, thus different and other alive circuits
Safe and reliable, stable operation.
Utility model content
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of this utility model is to provide one kind to have primary-secondary type respirator
Oil-immersed transformer, it utilizes primary-secondary type respirator, may be implemented to reuse to by filtering and dry air,
The replacement frequency for greatly reducing hygroscopic material greatly reduces the maintenance cost in later period, ensure that oil-immersed transformer
It works normally, transformer will not be caused to make moist because of the reason of respirator, it is ensured that the dielectric strength of transformer.
2. technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of oil-immersed transformer with primary-secondary type respirator, including oil-filled transformer body, the oil immersed type become
Depressor ontology includes conservator, conservator connecting tube is connected on the conservator, and the upper end of conservator connecting tube is located at the inside of conservator,
The downside of the conservator connecting tube is equipped with filtration drying tank, and the threaded upper ends of the filtration drying tank are connected with connection upper cover, institute
It states connection upper cover to connect with the lower end of conservator connecting tube, the lower end of the filtration drying tank is fixedly connected with ventilation loading plate, institute
It states and is contained with desiccant in filtration drying tank, the lower end of the filtration drying tank is fixedly connected with clamping ring, the clamping ring
Lower thread is connected with oil storage box, and oil strain was contained in the oil storage box, and the side of the filtration drying tank is equipped with air accumulator,
Moving piston is slidably connected in the air accumulator, the inside of the air accumulator is fixedly connected with piston limit plate, and piston limits
Position plate is located at the lower part of air accumulator, is placed with piston limit ring on the piston limit plate, is socketed in the piston limit ring
Filter pad is fixedly connected with gas exchanges pipe between the air accumulator and oil storage box, and the lower end of gas exchanges pipe is located at filtering
For oil level hereinafter, the inside of the air accumulator is connected to by gas exchanges pipe with the inside of oil storage box, it utilizes filtration drying tank
Primary-secondary type respirator is constituted with air accumulator, may be implemented to reuse to by filtering and dry air, greatly drop
The low replacement frequency of hygroscopic material, greatly reduces the maintenance cost in later period, ensure that the normal work of oil-immersed transformer,
Transformer will not be caused to make moist because of the reason of respirator, it is ensured that the dielectric strength of transformer.
Further, equal between gas exchanges pipe and the lower end of air accumulator between the conservator connecting tube and connection upper cover
It is connected with fastening nut, it is easy to disassemble and fixed, it is not easy gas leakage or loosens.
Further, filtering sponge is connected in the clamping ring, and filtering sponge is high-density sponge, the filtering sea
Continuous lower end is coated with oleophobic layer, and filtering sponge may filter that most of particulate matter in air, and be not easy to be infected in oil storage box
Cross oil strain.
Further, digging on the moving piston has two pairs of ventholes, is fixedly connected in venthole described in one pair of them
There is breather check valve, be fixedly connected with outgassing nonreturn valve in venthole described in another pair, when the gas in air accumulator is not enough to allow
, can be by breather check valve air inlet or outgassing nonreturn valve outlet when oil-immersed transformer breathes, and it is unidirectional to work as one of air inlet
When valve or outgassing nonreturn valve occlusion damage, breather check valve or outgassing nonreturn valve in addition can also work, and be equivalent to dual fail-safe, no
It can that there is a situation where air pressures be excessively high.
Further, the inner wall of the air accumulator is equipped with polishing layer, and moving piston can be enable upper and lower in air accumulator
Sliding is interference fit between the moving piston and the inner wall of air accumulator, can enhance close between moving piston and air accumulator
Closing property can be completely cut off the upside space of moving piston and lower side space by moving piston.
Further, the upper end of the air accumulator is fixed with air inlet frame, is placed with airstrainer in the air inlet frame,
The lower end of the air inlet frame, which is dug, multiple equally distributed air inlets, is threaded with protection cap on the air inlet frame, can lead to
It crosses air inlet to swap with extraneous air, and air inlet is opening down, the lower end of protection cap is located at the downside of air inlet frame,
It can provide and block for air inlet, be not easy that dust or rainwater is made to enter air inlet frame, and airstrainer can be to the sky for entering air accumulator
Gas carries out primary filter, convenient for increasing the cleanliness of air.
Further, the lower end of the gas exchanges pipe is fixedly connected with gas exchange head, under the gas exchange head
End, which is dug, multiple through-holes, and the inside of oil storage box is connected to by multiple through-holes with gas exchanges pipe, and gas outflow can be made more equal
Even, multiple through-holes are not easy to result in blockage, and do not easily cause and cross splashing for oil strain in oil storage box.
3. beneficial effect
Compared with the prior art, utility model has the advantages that
(1) this programme constitutes primary-secondary type respirator using filtration drying tank and air accumulator, may be implemented to by filtering and
Dry air is reused, and the replacement frequency of hygroscopic material is greatly reduced, greatly reduce the maintenance in later period at
This, ensure that the normal work of oil-immersed transformer, transformer will not be caused to make moist because of the reason of respirator, it is ensured that transformer
Dielectric strength.
(2) fastening is respectively connected between gas exchanges pipe and the lower end of air accumulator between conservator connecting tube and connection upper cover
Nut, it is easy to disassemble and fixed, it is not easy gas leakage or loosens.
(3) be connected in clamping ring filtering sponge, and filter sponge be high-density sponge, filter sponge lower end be coated with it is thin
Oil reservoir, filtering sponge may filter that most of particulate matter in air, and are not easy to be infected in oil storage box and cross oil strain.
(4) digging on moving piston has two pairs of ventholes, is fixedly connected with breather check valve in one pair of them venthole, separately
It is fixedly connected with outgassing nonreturn valve in a pair of of venthole, when the gas in air accumulator is not enough to that oil-immersed transformer is allowed to breathe,
It can be damaged by breather check valve air inlet or outgassing nonreturn valve outlet, and when one of breather check valve or outgassing nonreturn valve occlude
Bad when, breather check valve or outgassing nonreturn valve in addition can also work, and be equivalent to dual fail-safe, and the excessively high feelings of air pressure will not occur
Condition.
(5) inner wall of air accumulator is equipped with polishing layer, moving piston can be enable to slide up and down in air accumulator, and movement is lived
It is interference fit between plug and the inner wall of air accumulator, the airtightness between moving piston and air accumulator can be enhanced, movement can be passed through
Piston completely cuts off the upside space of moving piston and lower side space.
(6) upper end of air accumulator is fixed with air inlet frame, and airstrainer is placed in air inlet frame, and the lower end of air inlet frame is opened
Be carved with multiple equally distributed air inlets, be threaded with protection cap on air inlet frame, can by air inlet and extraneous air into
Row exchange, and air inlet is opening down, the lower end of protection cap is located at the downside of air inlet frame, can provide and block for air inlet, no
Dust or rainwater is easily set to enter air inlet frame, and airstrainer can carry out primary filter to the air for entering air accumulator, convenient for increasing
Add the cleanliness of air.
(7) lower end of gas exchanges pipe is fixedly connected with gas exchange head, and the lower end of gas exchange head, which is dug, multiple lead to
Hole, and the inside of oil storage box is connected to by multiple through-holes with gas exchanges pipe, can make gas outflow more evenly, multiple through-holes are not easy
It results in blockage, and does not easily cause and cross splashing for oil strain in oil storage box.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure of the utility model；
Fig. 2 is structural schematic diagram at A in Fig. 1；
Fig. 3 is the structural schematic diagram one of the utility model；
Fig. 4 is the structural schematic diagram two of the utility model.
Figure label explanation:
01 conservator connecting tube, 1 filtration drying tank, 101 connection upper covers, 102 first humidity sensors, 103 ventilation loading plates,
104 clamping rings, 105 filtering sponges, 106 oil storage boxes, 2 air accumulators, 201 moving pistons, 202 breather check valves, 203 outlets are unidirectional
Valve, 204 piston limit plates, 205 piston limit rings, 206 filter pads, 207 second humidity sensors, 3 air inlet frames, 301 air mistakes
Strainer, 302 air inlets, 303 protection caps, 4 gas exchanges pipes, 401 gas exchange heads, 402 through-holes, 5 detection control boxes.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model；The technical scheme in the embodiment of the utility model is carried out
Clearly and completely describe；Obviously；The described embodiments are only a part of the embodiments of the utility model；Rather than whole
Embodiment, based on the embodiments of the present invention；Those of ordinary skill in the art are without making creative work
Every other embodiment obtained；It fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside", " top/bottom end " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used for description mesh
, it is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " being provided with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, can also be with
It is to be detachably connected, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be with
Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Embodiment 1:
Fig. 1-4, a kind of oil-immersed transformer with primary-secondary type respirator, including oil-filled transformer body are please referred to,
Oil-filled transformer body includes conservator, conservator connecting tube 01 is connected on conservator, and the upper end of conservator connecting tube 01 is located at oil
The downside of the inside of pillow, conservator connecting tube 01 is equipped with filtration drying tank 1, and the threaded upper ends of filtration drying tank 1 are connected in connection
Lid 101, connection upper cover 101 are connect with the lower end of conservator connecting tube 01, and the lower end of filtration drying tank 1 is fixedly connected with ventilation carrying
Plate 103 is contained with desiccant in filtration drying tank 1, and desiccant is blue silica gel desiccant, and blue is carved with after moisture absorption and becomes pale red
Color, convenient for whether, to needing replacing and judging, the lower end of filtration drying tank 1 is fixedly connected with clamping ring 104, clamping ring 104
Lower thread be connected with oil storage box 106, be contained with oil strain in oil storage box 106, crossing oil strain is transformer oil, i.e., square canopy oil,
The side of filtration drying tank 1 is equipped with air accumulator 2, slidably connects moving piston 201 in air accumulator 2, the inside of air accumulator 2 is fixed
It is connected with piston limit plate 204, and piston limit plate 204 is located at the lower part of air accumulator 2, is placed with work on piston limit plate 204
Stop collar 205 is filled in, filter pad 206 is socketed in piston limit ring 205, is fixedly connected with gas between air accumulator 2 and oil storage box 106
Body exchanges pipe 4, is all connected between gas exchanges pipe 4 and the lower end of air accumulator 2 between conservator connecting tube 01 and connection upper cover 101
There is fastening nut, it is easy to disassemble and fixed, it is not easy gas leakage or loosens, and the lower end of gas exchanges pipe 4 is located at filtering oil liquid
Hereinafter, the inside of air accumulator 2 is connected to by gas exchanges pipe 4 with the inside of oil storage box 106, the lower end of gas exchanges pipe 4 is solid in face
Surely it is connected with gas exchange head 401, the lower end of gas exchange head 401, which is dug, multiple through-holes 402, and the inside of oil storage box 106
It being connected to by multiple through-holes 402 with gas exchanges pipe 4, gas outflow can be made more evenly, multiple through-holes 402 are not easy to result in blockage,
And it does not easily cause and crosses splashing for oil strain in oil storage box 106.
Filtering sponge 105 is connected in clamping ring 104, and filtering sponge 105 is high-density sponge, filtering sponge 105
Lower end is coated with oleophobic layer, and filtering sponge 105 may filter that most of particulate matter in air, and be not easy to be infected in oil storage box 106
Cross oil strain.
Digging on moving piston 201 has two pairs of ventholes, is fixedly connected with breather check valve in one pair of them venthole
202, outgassing nonreturn valve 203 is fixedly connected in another pair venthole, when the gas in air accumulator 2 is not enough to allow oil immersed type transformation
, can be by 203 outlet of 202 air inlet of breather check valve or outgassing nonreturn valve when device breathes, and work as one of breather check valve 202
Or when the occlusion damage of outgassing nonreturn valve 203, breather check valve 202 or outgassing nonreturn valve 203 in addition can also work, and be equivalent to double
Insurance, will not that there is a situation where air pressures is excessively high, the inner wall of air accumulator 2 is equipped with polishing layer, and moving piston 201 can be enable to store up
Slided up and down in gas tank 2, between moving piston 201 and the inner wall of air accumulator 2 for interference fit, can enhance moving piston 201 with
Airtightness between air accumulator 2 can be completely cut off the upside space of moving piston 201 and lower side space by moving piston 201.
The upper end of air accumulator 2 is fixed with air inlet frame 3, is placed with airstrainer 301 in air inlet frame 3, under air inlet frame 3
End, which is dug, multiple equally distributed air inlets 302, is threaded with protection cap 303 on air inlet frame 3, can pass through air inlet 302
It being swapped with extraneous air, and air inlet 302 is opening down, the lower end of protection cap 303 is located at the downside of air inlet frame 3,
It can provide and block for air inlet 302, be not easy to make dust or rainwater to enter air inlet frame 3, and airstrainer 301 can be to entering gas storage
The air of tank 2 carries out primary filter, convenient for increasing the cleanliness of air.
It is fixedly connected with the first humidity sensor 102 in connection upper cover 101, is fixedly connected with the second humidity in air accumulator 2
Sensor 207, and the second humidity sensor 207 is located at the downside of piston limit plate 204, can detect connection upper cover 101 and gas storage
Air humidity in tank 2, convenient for judging whether respirator goes wrong, and the possible cause of deducibility problem, protection cap 303
Upper end is fixedly connected with detection control box 5, and detection control box 5 is electrically connected with city, detection control box 5 and the first humidity sensor
102 and second humidity sensor 207 be electrically connected, pass through detection control box 5 can control the first humidity sensor 102 and second
The work of humidity sensor 207, and detection control box 5 can be analyzed and processed data, be connected with GSM in detection control box 5
Module and memory module can be realized the mutual biography with cloud database by GSM network, grasp respirator in time convenient for staff
Operating condition, memory module can store the related data of the first humidity sensor 102 and the second humidity sensor 207, simultaneously
It can be by data backup to cloud database by gsm module.
It can be set by a person skilled in the art the threshold value of humidity, when the first humidity sensor 102 or the second humidity sensor
When 207 humidities sensed exceed threshold value, staff can be notified automatically by gsm module, can be the shape of cell phone application
Formula, can also be short message or mail form, be convenient for the timely disposition of staff, do not easily cause oil-immersed transformer
Failure.
When oil-immersed transformer expanded by heating, air extra in conservator can be breathed out, extra air can successively pass through
Conservator connecting tube 01, connection upper cover 101, filtration drying tank 1 and filtering sponge 105 reach oil storage box 106, contain in oil storage box 106
It was placed with oil strain, and through-hole 402 is located at filtering oil level hereinafter, the pressure of extra air can descend press filtration oily, by oil strain
It is depressed into gas exchanges pipe 4, the air in gas exchanges pipe 4 can be depressed into air accumulator 2, can successively pass through piston limit plate
204 and filter pad 206, until moving piston 201 is jacked up, realizes the gentle of air pressure, the exhalation of additional air can be realized, and
The air for being equal to exhalation is stored in filtration drying tank 1 and air accumulator 2, and is the dry air by filtering, will not shadow again
The service life for ringing 1 internal desiccant of filtration drying tank, when filtration drying tank 1 and air accumulator 2 are not enough to hold the air of exhalation,
Air accumulator 2 can rise until being stopped by airstrainer 301, and under the action of gas depressor, outgassing nonreturn valve 203 can be opened,
Air can pass sequentially through outgassing nonreturn valve 203, airstrainer 301 and air inlet 302 and outwardly discharge.
When temperature of oil in transformer, which reduces, to be shunk, conservator needs to suck air use, with expiration step on the contrary, air can pass through
Air in filtration drying tank 1 can enter conservator by conservator connecting tube 01, and moving piston 201 can decline, when moving piston 201
When sucking of the lack of air stored in the space of downside and filtration drying tank 1 to meet conservator, moving piston 201 can drop to
On piston limit ring 205, finally stopped by piston limit ring 205, under the action of atmospheric pressure, outside air can pass through air inlet
Mouth 302 and airstrainer 301 enter in air accumulator 2, and enter the sky of 201 downside of moving piston by breather check valve 202
Between, enter in oil storage box 106 using gas exchanges pipe 4 and through-hole 402 and filter, subsequently into filtration drying tank 1 through drying
Agent is dry, enters conservator finally by conservator connecting tube 01, the balance of air pressure can be realized, complete the process of air-breathing.
This programme constitutes primary-secondary type respirator using filtration drying tank 1 and air accumulator 2, may be implemented to by filtering and doing
Dry air is reused, and the replacement frequency of hygroscopic material is greatly reduced, and greatly reduces the maintenance cost in later period,
It ensure that the normal work of oil-immersed transformer, transformer will not be caused to make moist because of the reason of respirator, it is ensured that transformer
Dielectric strength.
The preferable specific embodiment of the above, only the utility model；But the protection scope of the utility model is not
It is confined to this.Anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change, should all cover in the protection scope of the utility model
It is interior.
Claims (7)
1. a kind of oil-immersed transformer with primary-secondary type respirator, including oil-filled transformer body, the oil immersed type transformation
Device ontology includes conservator, is connected on the conservator conservator connecting tube (01), and the upper end of conservator connecting tube (01) is located at conservator
Inside, it is characterised in that: the downside of the conservator connecting tube (01) be equipped with filtration drying tank (1), the filtration drying tank (1)
Threaded upper ends be connected with connection upper cover (101), connection upper cover (101) connect with the lower end of conservator connecting tube (01), institute
The lower end for stating filtration drying tank (1) is fixedly connected with ventilation loading plate (103), is contained with drying in the filtration drying tank (1)
The lower end of agent, the filtration drying tank (1) is fixedly connected with clamping ring (104), the lower thread connection of the clamping ring (104)
Have oil storage box (106), oil strain was contained in the oil storage box (106), the side of the filtration drying tank (1) is equipped with air accumulator
(2), it is slidably connected moving piston (201) in the air accumulator (2), the inside of the air accumulator (2) is fixedly connected with piston
Limit plate (204), and piston limit plate (204) is located at the lower part of air accumulator (2), is placed on the piston limit plate (204)
Piston limit ring (205), the piston limit ring (205) is interior to be socketed with filter pad (206), the air accumulator (2) and oil storage box
(106) it is fixedly connected between gas exchanges pipe (4), and the lower end of gas exchanges pipe (4) is located at filtering oil level hereinafter, described
The inside of air accumulator (2) is connected to by gas exchanges pipe (4) with the inside of oil storage box (106).
2. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the oil
Pillow connecting tube (01) with connect between upper cover (101) be respectively connected between gas exchanges pipe (4) and the lower end of air accumulator (2) tightly
Gu nut.
3. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the company
Filtering sponge (105) is connected in adapter ring (104), and filtering sponge (105) is high-density sponge, the filtering sponge (105)
Lower end be coated with oleophobic layer.
4. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the fortune
Digging in piston (201) has two pairs of ventholes, and breather check valve (202) are fixedly connected in venthole described in one pair of them,
Outgassing nonreturn valve (203) are fixedly connected in venthole described in another pair.
5. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the storage
The inner wall of gas tank (2) is equipped with polishing layer, is interference fit between the moving piston (201) and the inner wall of air accumulator (2).
6. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the storage
The upper end of gas tank (2) is fixed with air inlet frame (3), is placed with airstrainer (301), the air inlet in the air inlet frame (3)
The lower end of frame (3), which is dug, multiple equally distributed air inlets (302), is threaded with protection cap on the air inlet frame (3)
(303)。
7. a kind of oil-immersed transformer with primary-secondary type respirator according to claim 1, it is characterised in that: the gas
The lower end of body exchange pipe (4) is fixedly connected with gas exchange head (401), and the lower end cutting of the gas exchange head (401) has more
A through-hole (402), and the inside of oil storage box (106) is connected to by multiple through-holes (402) with gas exchanges pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920038332.7U CN209168892U (en) | 2019-01-10 | 2019-01-10 | A kind of oil-immersed transformer with primary-secondary type respirator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920038332.7U CN209168892U (en) | 2019-01-10 | 2019-01-10 | A kind of oil-immersed transformer with primary-secondary type respirator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209168892U true CN209168892U (en) | 2019-07-26 |
Family
ID=67328390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920038332.7U Expired - Fee Related CN209168892U (en) | 2019-01-10 | 2019-01-10 | A kind of oil-immersed transformer with primary-secondary type respirator |
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| Country | Link |
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| CN (1) | CN209168892U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509616A (en) * | 2019-01-10 | 2019-03-22 | 江苏亚威变压器有限公司 | A kind of oil-immersed transformer with primary-secondary type respirator |
| CN113187698A (en) * | 2020-12-23 | 2021-07-30 | 南京工业职业技术大学 | Breathing cavity type lubricating moisture-proof device and use method thereof |
| CN116864278A (en) * | 2023-06-27 | 2023-10-10 | 国网湖北省电力有限公司电力科学研究院 | On-load capacity-regulating voltage-regulating tap switch of transformer |
-
2019
- 2019-01-10 CN CN201920038332.7U patent/CN209168892U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509616A (en) * | 2019-01-10 | 2019-03-22 | 江苏亚威变压器有限公司 | A kind of oil-immersed transformer with primary-secondary type respirator |
| CN113187698A (en) * | 2020-12-23 | 2021-07-30 | 南京工业职业技术大学 | Breathing cavity type lubricating moisture-proof device and use method thereof |
| CN116864278A (en) * | 2023-06-27 | 2023-10-10 | 国网湖北省电力有限公司电力科学研究院 | On-load capacity-regulating voltage-regulating tap switch of transformer |
| CN116864278B (en) * | 2023-06-27 | 2024-04-09 | 国网湖北省电力有限公司电力科学研究院 | On-load capacity-regulating voltage-regulating tap switch of transformer |
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