CN114188125A - Explosion-proof oil-immersed transformer - Google Patents
Explosion-proof oil-immersed transformer Download PDFInfo
- Publication number
- CN114188125A CN114188125A CN202010964837.3A CN202010964837A CN114188125A CN 114188125 A CN114188125 A CN 114188125A CN 202010964837 A CN202010964837 A CN 202010964837A CN 114188125 A CN114188125 A CN 114188125A
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- CN
- China
- Prior art keywords
- oil
- explosion
- immersed transformer
- proof
- shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
Abstract
The invention discloses an explosion-proof oil-immersed transformer which comprises an oil-immersed transformer body, wherein an explosion-proof pressure relief mechanism is arranged at the top of the oil-immersed transformer body and comprises a shell, a left through hole and a right through hole are reserved at the upper positions of the left side and the right side of the shell respectively, a left supporting tube is fixed on the left through hole through a bolt, a right supporting tube is fixed on the right through hole through a bolt, the bottoms of the right supporting tube and the left supporting tube are fixed on a shell at the top of the oil-immersed transformer body through bolts, the right supporting tube and the left supporting tube are communicated with the inside of the oil-immersed transformer body, the upper limit of pressure bearing is improved by increasing an auxiliary communication space, and the buffer time of pressure relief is prolonged. The invention provides an explosion-proof oil-immersed transformer which is ingenious in structural arrangement and reasonable in layout, is simple in structure, is suitable for newly-built transformers, can be used for quickly transforming installed transformers, and is small in transformation difficulty, low in cost and very convenient to apply.
Description
Technical Field
The invention relates to the technical field of transformer equipment, in particular to an explosion-proof oil-immersed transformer.
Background
The transformer is a static electric device, which is used to change a certain value of alternating voltage (current) into another or several different values of voltage (current) with the same frequency, wherein, the iron core and the winding of the oil-immersed transformer are immersed into the oil tank filled with insulating oil to strengthen the insulation and improve the cooling and radiating conditions, when the faults such as serious overload, short circuit, insulation damage and the like occur in the transformer, the insulating oil is subjected to high temperature or electric arc action, is heated and decomposed to generate a large amount of hydrocarbon mixed gas, so that the pressure in the transformer rises sharply, and then the structure of the oil tank of the transformer is damaged, and explosion and combustion occur.
At present, the explosion reason of oil-immersed transformer is almost all relevant with internal pressure's unbalance, and wherein the most direct reason of pressure's unbalance is that transformer oil is volatilized into the gaseous state by liquid, greatly increased the inside pressure value of transformer, will take place structural failure when the pressure value breaks through structural strength value, and then lead to transformer oil to leak the blowout, then the burning explosion of catching fire. Therefore, an explosion-proof oil-immersed transformer is provided.
Disclosure of Invention
The invention aims to provide an explosion-proof oil-immersed transformer to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an explosion-proof oil-immersed transformer, includes the oil-immersed transformer body, explosion-proof pressure release mechanism is installed to top position on the oil-immersed transformer body, and explosion-proof pressure release mechanism includes the casing, and left and right sides leans on the position to reserve respectively and has left opening and right opening on the casing, has left stay tube through the bolt fastening on the left opening, has right stay tube through the bolt fastening on the right opening, and right stay tube and left stay tube bottom all are linked together through the bolt fastening on oil-immersed transformer body top shell, and right stay tube and left stay tube all are inside with the oil-immersed transformer body.
Transformer oil volatilizes into the gaseous state by liquid, can lead to internal pressure's rising in original limited transformer space, improves the upper limit that bears of pressure through increasing affiliated intercommunication space, provides the buffering time of pressure release to the explosion condition that the pressure release untimely leads to takes place when avoiding pressure to rise fast.
As a further scheme of the invention: the utility model discloses a transformer oil, including casing, casing left side opening and right opening, be connected with between the casing left side opening and right opening and sink the pipe of immersing that is located casing bottom position in the middle of being connected with, the right branch stay tube directly communicates in with the casing simultaneously, and it has a plurality of bleeder vents to evenly bore on the pipe of immersing that is located casing bottom position, organic solvent has been irritated with right opening below position to the casing left side opening, utilizes organic solvent to inhale and dissolves volatile transformer oil to reduce space pressure, further avoid the condition of explosion to take place.
As a further scheme of the invention: the utility model discloses a transformer, including wireless transmission module, the controller uses MCU as control core, utilizes wireless transmission module, realizes the state control of long-range wireless control and transformer to in time discover in time to handle, further reduce the unexpected condition of explosion and take place.
As a further scheme of the invention: the pipe mouth of pipe size of immersing of right side opening position is the half of right side opening size, provides the reservation passageway for the space in the casing.
As a further scheme of the invention: the air exchange fan is welded and fixed in the left supporting pipe, a second airtight valve is further sleeved and fixed on the left supporting pipe below the air exchange fan, the air exchange fan is installed in the right supporting pipe, a first airtight valve is sleeved and fixed below the air exchange fan in the right supporting pipe, the air exchange fan is connected with the controller in a controlled mode, and the air exchange fan accelerates the conduction and circulation of the internal air.
As a further scheme of the invention: an oil absorption film is filled in the pipe wall of the right supporting pipe close to the right opening, so that the amount of the organic solvent which is volatilized and enters the transformer is reduced.
As a further scheme of the invention: the organic solvent is phenyl silicone oil, is low-temperature resistant, high-temperature resistant, good in thermal stability and not easy to volatilize, has a flash point of more than 300 ℃, and has a dielectric constant of 2.6-3.0 under the conditions of 25 ℃ and 50 HZ.
Compared with the prior art, the invention has the advantages that:
according to the invention, through adding the mutually communicated shells on the transformer shell and filling the organic solvent in the shells, the physical characteristics of the existing transformer oil are utilized, when the transformer oil is decomposed by high temperature or electric arc action to generate a large amount of hydrocarbon mixed gas, the hydrocarbon gas is absorbed and dissolved by the organic solvent, so that the hydrocarbon gas concentration in the transformer is reduced, the space pressure is reduced, and the condition that the structure of the transformer is damaged and deflagrated due to continuous pressure rise is avoided.
According to the invention, the shell has a certain space, and when the transformer oil is decomposed, a certain dump space can be provided, so that the reaction time of the pressure release valve of the transformer is prolonged, and the explosion condition is further avoided.
According to the invention, the concentration of the organic solvent and the internal pressure of the shell are detected by using the concentration meter and the air pressure sensor, the detection result is wirelessly sent by using the wireless transmission module, and a manager can remotely monitor the working state, so that timely processing can be predicted, management and maintenance are facilitated, the equipment fault risk is reduced, and the normal operation of a power grid is ensured.
The explosion-proof pressure relief mechanism is simple in structure, suitable for newly-built transformers, capable of quickly transforming installed transformers, small in transformation difficulty, low in cost and very convenient to apply.
Drawings
Fig. 1 is a side view of an explosion-proof oil-filled transformer.
Fig. 2 is a schematic diagram of an explosion-proof pressure relief mechanism in an explosion-proof oil-immersed transformer.
Fig. 3 is a system modularization block diagram of an explosion-proof oil-immersed transformer.
In the figure: 1. an oil-immersed transformer body; 2. an explosion-proof pressure relief mechanism; 3. a housing; 4. an air pressure sensor; 5. an organic solvent; 6. a right port; 7. oil absorption film; 8. a right support tube; 9. a ventilation fan; 10. a first airtight valve; 11. an immersion tube; 12. air holes are formed; 13. an immersion concentration meter; 14. a left support tube; 15. a second airtight valve; 16. a left port; 17. MCU; 18. and a wireless transmission module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, an explosion-proof oil-immersed transformer comprises an oil-immersed transformer body 1, an explosion-proof pressure relief mechanism 2 is installed at the top of the oil-immersed transformer body 1, the explosion-proof pressure relief mechanism 2 comprises a shell 3, a left through hole 16 and a right through hole 6 are reserved at the upper positions of the left side and the right side of the shell 3 respectively, a left support tube 14 is fixed on the left through hole 16 through a bolt, a right support tube 8 is fixed on the right through hole 6 through a bolt, the bottoms of the right support tube 8 and the left support tube 14 are fixed on a shell at the top of the oil-immersed transformer body 1 through bolts, and the right support tube 8 and the left support tube 14 are communicated with the inside of the oil-immersed transformer body 1;
an immersion pipe 11 sinking in the middle and located at the bottom of the shell 3 is connected between a left port 16 and a right port 6 in the shell 3, the size of the orifice of the immersion pipe 11 at the position of the right port 6 is half of the size of the right port 6, a right support pipe 8 is directly communicated with the inside of the shell 3 at the same time, a plurality of vent holes 12 are uniformly drilled in the immersion pipe 11 at the bottom of the shell 3, an organic solvent 5 is filled below the left port 16 and the right port 6 of the shell 3, the organic solvent in the embodiment is phenyl silicone oil, an immersion concentration meter 13 is fixed on the side wall of the shell 3 in the organic solvent 5 through screws, and an air pressure sensor 4 is fixed on the top wall in the shell;
the utility model discloses a casing 3 side welded controller (not drawn in the legend) is connected with the controller, the controller uses MCU17 as control core, including wireless transmission module 18, welding is fixed with ventilation fan 9 in the left stay tube 14, still cup joints on the left stay tube 14 of ventilation fan 9 below and is fixed with second airtight valve 15, and ventilation fan 9 installs in the right stay tube 8 the same, and ventilation fan 9 connects fixedly below the ventilation fan 9 in the right stay tube 8 first airtight valve 10, and the pipe wall that is close to right opening 6 position in the right stay tube 8 is filled with oil-absorbing film 7, baroceptor 4, immersive concentration meter 13 and ventilation fan 9 all are connected with casing 3 side welded controller (not drawn in the legend).
The working principle of the invention is as follows: the invention provides an explosion-proof oil-immersed transformer, which is ingenious in structural arrangement and reasonable in layout, when the transformer works, a ventilation fan 9 is opened to enable air which enters from left to right to circulate, hydrocarbon gas formed by decomposition of transformer oil is sucked into an immersion tube 11 by the ventilation fan 9 and is mixed with an organic solvent 5, the organic solvent sucks and dissolves hydrocarbon substances in the gas, so that the space pressure is reduced, part of insoluble gas after being sucked and dissolved enters the shell 3 from an air hole 12 and then enters a right support tube 8 from a right opening 6 and enters an oil-immersed transformer body 1 again, and as the hydrocarbon substances in the gas are sucked and dissolved, the space pressure in the oil-immersed transformer is greatly reduced, so that the situation that the structure is damaged and further explosion is caused due to overlarge pressure is avoided.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. The utility model provides an explosion-proof oil-immersed transformer, including oil-immersed transformer body (1), a serial communication port, explosion-proof pressure release mechanism (2) are installed to top position on oil-immersed transformer body (1), explosion-proof pressure release mechanism (2) include casing (3), left and right sides leans on the position to reserve respectively to have left opening (16) and right opening (6) on casing (3), there is left stay tube (14) through the bolt fastening on left opening (16), there is right stay tube (8) through the bolt fastening on right opening (6), right stay tube (8) and left stay tube (14) bottom all are fixed in on oil-immersed transformer body (1) top shell through the bolt fastening, right stay tube (8) and left stay tube (14) all are linked together with oil-immersed transformer body (1) inside.
2. An explosion-proof oil-immersed transformer according to claim 1, characterized in that an immersion pipe (11) which is sunk in the middle and located at the bottom of the shell (3) is connected between the left port (16) and the right port (6) in the shell (3), the right support pipe (8) is directly communicated with the inside of the shell (3), a plurality of air holes (12) are uniformly drilled on the immersion pipe (11) located at the bottom of the shell (3), and an organic solvent (5) is filled below the left port (16) and the right port (6) of the shell (3).
3. An explosion-proof oil-immersed transformer according to claim 2, characterized in that an immersed concentration meter (13) is screwed on the side wall of the housing (3) in the organic solvent (5), an air pressure sensor (4) is screwed on the top wall of the housing (3), the air pressure sensor (4) and the immersed concentration meter (13) are both connected with a controller welded on the side of the housing (3), and the controller uses an MCU (17) as a control core and comprises a wireless transmission module (18).
4. An explosion-proof oil-filled transformer according to claim 2, characterized in that the size of the mouth of the immersion tube (11) at the right opening (6) is half of the size of the right opening (6).
5. An explosion-proof oil-immersed transformer according to claim 3, characterized in that a ventilation fan (9) is welded and fixed in the left support tube (14), a second airtight valve (15) is further sleeved and fixed on the left support tube (14) below the ventilation fan (9), the ventilation fan (9) is also installed in the right support tube (8), a first airtight valve (10) is sleeved and fixed below the ventilation fan (9) in the right support tube (8), and the ventilation fan (9) is in control connection with the controller.
6. An explosion-proof oil-filled transformer according to claim 5, characterized in that the oil absorption film (7) is plugged in the pipe wall of the right support pipe (8) near the right port (6).
7. An explosion-proof oil-immersed transformer according to any one of claims 2 to 6, wherein the organic solvent (5) is phenyl silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964837.3A CN114188125A (en) | 2020-09-15 | 2020-09-15 | Explosion-proof oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010964837.3A CN114188125A (en) | 2020-09-15 | 2020-09-15 | Explosion-proof oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114188125A true CN114188125A (en) | 2022-03-15 |
Family
ID=80600885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010964837.3A Withdrawn CN114188125A (en) | 2020-09-15 | 2020-09-15 | Explosion-proof oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114188125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031045A (en) * | 2022-12-29 | 2023-04-28 | 扬州永鼎电气科技有限公司 | Oil immersed transformer with explosion-proof function and working method thereof |
-
2020
- 2020-09-15 CN CN202010964837.3A patent/CN114188125A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116031045A (en) * | 2022-12-29 | 2023-04-28 | 扬州永鼎电气科技有限公司 | Oil immersed transformer with explosion-proof function and working method thereof |
| CN116031045B (en) * | 2022-12-29 | 2024-03-19 | 扬州永鼎电气科技有限公司 | Oil immersed transformer with explosion-proof function and working method thereof |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220315 |