CN114705273A - Intelligent oil level gauge for oil-immersed transformer - Google Patents
Intelligent oil level gauge for oil-immersed transformer Download PDFInfo
- Publication number
- CN114705273A CN114705273A CN202210175800.1A CN202210175800A CN114705273A CN 114705273 A CN114705273 A CN 114705273A CN 202210175800 A CN202210175800 A CN 202210175800A CN 114705273 A CN114705273 A CN 114705273A
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- display screen
- cavity
- oil level
- assembly
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/56—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using elements rigidly fixed to, and rectilinearly moving with, the floats as transmission elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
The invention relates to the field of transformers, in particular to an integrated intelligent oil level indicator with a display screen device. The intelligent oil level indicator with the display screen device is novel and unique in structure, can read the immediate internal pressure value, the oil level state value and the oil top temperature rise value of the transformer through the display screen, and can also transmit related operation data through the RS485 communication interface to constantly monitor the operation state of the transformer, so that the normal operation of the transformer is guaranteed without being damaged.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an intelligent oil level gauge of an oil-immersed transformer.
Background
At present, an intelligent oil level indicator on the market does not have an operation parameter display function, if the function needs to be realized, a control display device is arranged on an oil tank cover of a transformer or a distribution box beside the transformer, and then a communication interface lead of the intelligent oil level indicator is led out to be electrically connected with the intelligent oil level indicator. This approach suffers from the following disadvantages:
1. the installation is inconvenient: many oil immersed transformers are hung in areas far away from residences or remote mountainous areas, control display devices are installed on a transformer box cover or a distribution box beside the transformer, some installation supports, installation holes and accessories need to be made on the transformer box cover or the distribution box beside the transformer, and the installation is inconvenient at present by combining the surrounding environment;
2. large volume, heavy product: the control display device is used outdoors and needs to meet at least the protection level above IP54, so the volume is larger, and the whole product is larger and heavier due to the intelligent oil level and some communication cables;
3. the cost is high: the cost of the whole product is greatly increased by controlling the display device, the communication cable, field construction, installation, modification, transportation and the like.
4. The safety is insufficient: from the wiring of control display device to intelligent oil level gaugember communication interface, whole communication cable sways in the air, and operating duration exists the bad electric hidden danger such as contact or drop easily for a long time.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides an integrated intelligent oil level indicator with a display screen device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a take integral type intelligence oil level gaugember of display screen device, mainly includes ball float subassembly, guide holder, body, mount pad, display screen subassembly, PCB board subassembly, perspective panel, panel lid and temperature sensor. The device is characterized in that the PCB assembly is fixedly installed in a vertical cavity of the mounting seat, the display screen assembly is fixedly installed in a lateral cavity of the mounting seat, the perspective panel is embedded in an inner cavity of the panel cover and then fixedly installed on the outer end face of the lateral cavity of the mounting seat, the guide seat is installed at the lower end of the pipe body, and the floating ball assembly can vertically slide up and down in the guide seat.
Preferably, a round hole is formed between the lateral cavity and the vertical cavity of the mounting seat, a round groove is formed in the edge, extending out of one end of the lateral cavity, of the round hole, a sealing ring is arranged on the round groove, an electrical connecting plate on the display screen assembly is perpendicularly pressed on the sealing ring and is fixed in a threaded hole formed in the lateral cavity of the mounting seat through a screw, and a non-air-leakage seal is formed between the lateral cavity of the mounting seat and the vertical cavity.
Preferably, the display screen subassembly includes liquid crystal display module, electrical connection board, contact pin and external insulation wire, the both ends of contact pin insert respectively behind liquid crystal display module electrical connection hole and the first electrical connection hole of electrical connection board soldering tin fixed, thereby form electrical connection between display module and the electrical connection board, it is fixed that external insulation wire inserts behind the second electrical connection hole that electrical connection board corresponds soldering tin, the electrical connection board is the epoxy board, and the inside copper foil that has spread of epoxy board, first electric hole and second electric hole form electrical connection through the copper foil.
Preferably, the other end of the external insulation wire penetrates through a through hole between the lateral cavity and the vertical cavity of the mounting seat and then is inserted into the PCB assembly, and the PCB assembly is electrically connected with the display screen assembly.
Preferably, a square groove is formed in the edge of the outer end face of the lateral cavity of the mounting seat, a sealing ring is arranged on the square groove, the perspective panel is vertically pressed on the sealing ring, the panel cover is vertically pressed on the perspective panel and then fixed on a threaded hole in the edge of the outer end face of the lateral cavity of the mounting seat through a screw, and the lateral cavity of the mounting seat and the outside form air-leakage-free sealing.
Preferably, the panel cover is provided with a cavity groove, the perspective panel is embedded into the cavity groove arranged on the panel cover, a fit clearance is reserved between the perspective panel and the cavity groove, the depth of the cavity groove is slightly larger than the thickness of the perspective panel, a square through hole is arranged in the middle of the cavity groove, and various running parameter values on the display screen module can be visually observed through the square through hole.
Preferably, a distance measuring sensor is arranged in the center of the lower layer plate of the PCB plate assembly facing downwards, and the distance measuring sensor can read the oil level state of the transformer by measuring the vertical distance between the upper end surface of the red buoy of the floating ball assembly and the distance measuring sensor.
Preferably, the red buoy is fixed at one end of the blue buoy, the small end of the blue buoy is fixed at one end of the connecting rod, the floating ball is fixed at the other end of the connecting rod, and the floating ball floats up and down to drive the connecting rod to slide up and down in the guide seat for a certain displacement, so that the blue buoy and the red buoy are driven to move up and down.
The invention has the beneficial effects that:
1. according to the integrated intelligent oil level indicator with the display screen device, the operation parameter display function is integrated on a product, and the numerical values such as the oil pressure, the oil level state quantity, the oil top temperature rise and the like of the instant transformer can be read through the display screen.
2. The integrated intelligent oil level indicator with the display screen device can monitor the temperature of an oil top, the oil pressure of the transformer and the oil level state of the transformer at any time during the operation of the transformer, and once the temperature rise of the oil top is too high due to the long-time overload operation of the transformer or the oil quantity of an oil tank is reduced due to the long-time operation of the transformer, the PCB assembly sends an alarm instruction through the RS485 communication interface to prompt that the load needs to be reduced or the oil is supplemented, so that the normal operation of the transformer is further guaranteed not to be damaged.
Drawings
FIG. 1 is a schematic diagram showing the external structure of an integrated intelligent oil level indicator with a display screen device according to the present invention;
FIG. 2 is an exploded view of an integrated intelligent oil level indicator with a display screen device according to the present invention;
FIG. 3 is a schematic structural cross-sectional view of an integrated intelligent oil level indicator with a display screen device according to the present invention;
fig. 4 is a schematic structural diagram of a display screen assembly of the integrated intelligent oil level indicator with the display screen device according to the present invention.
In the figure: the device comprises a floating ball assembly (1.1 floating ball, a connecting rod 1.2, a locating pin 1.3, a blue buoy 1.4, a red buoy 1.5), a tube body 2, a mounting seat 3, an aviation plug 4RS485, a mounting cap 5, a pressure relief valve assembly 6, a panel cover 7, a first sealing ring 8, a second sealing ring 9, a perspective panel 10, a display screen assembly 11 (a liquid crystal display module 11.1, an electrical connecting plate 11.2, a contact pin 11.3 and an external insulated wire 11.4), a guide seat 12, a PCB assembly 13 and a temperature sensor 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an integral type intelligence oil level gaugember of taking display screen device mainly includes ball float subassembly 1 body 2, mount pad 3, RS485 aviation plug 4, mounting cap 5, pressure release valve subassembly 6, display screen subassembly 11, guide holder 12, PCB subassembly 13 and temperature sensor 14. Display screen subassembly 11 and PCB subassembly 13 are installed respectively and are fixed in the cavity that mount pad 3 was equipped with, 3 lower extremes of mount pad and upper end are equipped with the seal groove in addition, the external screw thread that is equipped with through self after the sealing washer was placed to the lower extreme seal groove is fixed together with the upper end of body 2, upper end seal groove is placed and is covered mounting cap 5 behind the sealing washer, mounting cap 5 passes through the fix with screw to the mount pad 3 up end, the other end of mounting cap 5 is equipped with the hickey, pressure release valve subassembly 6 passes through the hickey to be fixed on mounting cap 5, be equipped with in the chamber hole of body 2 lower extreme with guide holder 12 complex hickey, guide holder 12 is fixed to the downthehole back in chamber of body 2 lower extreme, ball float subassembly 1 can be vertical linear slip in guide holder 12.
The lateral cavity of the mounting base 3 is provided with a circular hole, the edge of the circular hole extending from one end of the lateral cavity is provided with a circular groove, the circular groove is provided with a second sealing ring 9, an electrical connecting plate 11.2 on the display screen assembly 11 is perpendicularly pressed on the second sealing ring 9 and is fixed in a threaded hole arranged in the lateral cavity of the mounting base 3 through a screw, and a non-air-leakage seal is formed between the lateral cavity of the mounting base 3 and the vertical cavity.
Referring to fig. 4, the display panel assembly 11 includes a liquid crystal display module 11.1, an electrical connection board 11.2, a pin 11.3 and an external insulation wire 11.4, two ends of the pin 11.3 are respectively inserted into an electrical connection hole of the liquid crystal display module 11.1 and a first electrical connection hole of the electrical connection board 11.2 and then soldered and fixed, thereby forming an electrical connection between the display module 11.1 and the electrical connection board 11.2, the external insulation wire 11.4 is inserted into a second electrical connection hole corresponding to the electrical connection board 11.2 and then soldered and fixed, the electrical connection board 11.2 is an epoxy resin board, a copper foil is laid inside the epoxy resin board, and the first electrical hole and the second electrical hole form an electrical connection through the copper foil.
Referring to fig. 3, the other end of the external insulated wire 11.4 penetrates through a through hole between the lateral cavity and the vertical cavity of the mounting base 3 and then is inserted into the PCB assembly 13, the PCB assembly 13 is thereby electrically connected with the display screen assembly 11, a cavity groove is arranged on the panel cover 7, the see-through panel 10 is embedded into the cavity groove of the panel cover 7, a fit clearance is left between the see-through panel and the cavity groove, the depth of the cavity groove is slightly larger than the thickness of the see-through panel 10, a square through hole is arranged in the middle of the cavity groove, and various running parameter values on the display screen module 11.1 can be visually observed through the square through hole.
Referring to fig. 3, a distance measuring sensor is installed at the center of the lower layer plate of the PCB plate assembly 13 facing downward, and the oil level state of the transformer can be read by measuring the vertical distance between the upper end surface of the red buoy 1.5 of the buoy assembly 1 and the distance measuring sensor.
Referring to fig. 3, red buoy 1.5 of buoy assembly 1 is fixed in the one end of blue buoy 1.4, the tip of blue buoy 1.4 is fixed in the one end of connecting rod 1.2, floater 1.1 is fixed in the other end of connecting rod, floater 1.1 floats from top to bottom and drives connecting rod 1.2 to slide up and down in guide holder 3 for a certain displacement, and then blue buoy 1.4 and red buoy 1.5 are driven to move up and down, when red buoy 1.5 slides up or down along with floater assembly 1, the change of oil level volume at this moment can both be accurately detected by the distance measuring sensor, accomplish linear measurement real-time monitoring.
Referring to fig. 3, the temperature sensor 14 is embedded in the inner hole of the connecting rod 1.2, the large end of the temperature sensor 14 is slightly sunk into the lower end face of the floating ball 1.1, and the other end of the temperature sensor 14 is led out from the side hole at the upper end of the red buoy 1.5 through lead connection and then is inserted on the PCB assembly 13 to form temperature transmission.
The intelligence oil level gaugember in this embodiment, through buoy assembly 1, the range sensor, temperature sensor 14 and display screen subassembly 11 can monitor the transformer oil level volume state when operation constantly, the temperature of oil pressure state and oil top, in case the transformer leads to the oil top temperature rise too high or the transformer leads to the oil tank oil mass to diminish or the oil pressure is unusual for long-time operation of transformer in long-time overload operation, PCB subassembly 13 sends alarm command through RS485 aviation plug 4 communication interface, the suggestion needs to reduce the load or mend oil, further guarantee that the transformer normal operating does not receive the damage.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An integrated intelligent oil level indicator with a display screen device mainly comprises a floating ball assembly (1), a guide seat (12), a pipe body (2), a mounting seat (3), a display screen assembly (11), a PCB (printed circuit board) assembly (13), a perspective panel (10), a panel cover (7) and a temperature sensor (14). The device is characterized in that the PCB assembly (13) is fixedly installed in a vertical cavity of the mounting seat (3), the display screen assembly (11) is fixedly installed in a lateral cavity of the mounting seat (3), the perspective panel (10) is embedded in an inner cavity of the panel cover (7) and then fixedly installed on the outer end face of the lateral cavity of the mounting seat (3), the guide seat (12) is installed at the lower end of the pipe body (2), and the floating ball assembly (1) vertically slides up and down in the guide seat (12).
2. The integrated intelligent oil level indicator with the display screen device according to claim 1, wherein a round hole is formed between the lateral cavity and the vertical cavity of the mounting seat (3), a round groove is formed in the outer extending edge of one end of the lateral cavity of the round hole, a second sealing ring (9) is arranged on the round groove, an electrical connecting plate (11.2) on the display screen assembly (11) is vertically pressed on the second sealing ring (9) and is fixed in a threaded hole formed in the lateral cavity of the mounting seat (3) through a screw, and a non-air-leakage seal is formed between the lateral cavity and the vertical cavity of the mounting seat (3).
3. The integrated intelligent oil level indicator with the display screen device according to claim 1, wherein the display screen assembly (11) comprises a liquid crystal display module (11.1), an electrical connection board (11.2), a contact pin (11.3) and an external insulation wire (11.4), two ends of the contact pin (11.3) are respectively inserted into an electrical connection hole of the liquid crystal display module (11.1) and a first electrical connection hole of the electrical connection board (11.2) and then fixed by soldering, the display module (11.1) and the electrical connection board (11.2) are electrically connected, the external insulation wire (11.4) is inserted into a second electrical connection hole corresponding to the electrical connection board (11.2) and then fixed by soldering, and the first electrical hole and the second electrical hole are electrically connected through copper foils.
4. The integrated intelligent oil level indicator with the display screen device according to claim 3, wherein the electrical connection plate (11.2) is an epoxy resin plate, and a copper foil is paved inside the epoxy resin plate.
5. The integrated intelligent oil level indicator with the display screen device according to claim 3, wherein the other end of the outer insulated wire (11.4) passes through a through hole between the lateral cavity and the vertical cavity of the mounting base (3) and then is inserted into the PCB assembly (13), and the PCB assembly (13) and the display screen assembly (11) are electrically connected.
6. The integrated intelligent oil level indicator with the display screen device according to claim 1, wherein a square groove is formed in the edge of the outer end face of the lateral cavity of the mounting seat (3), a first sealing ring (8) is arranged on the square groove, the perspective panel (10) is vertically pressed on the first sealing ring (8), the panel cover (7) is vertically pressed on the perspective panel (10) and fixed on a threaded hole in the edge of the outer end face of the lateral cavity of the mounting seat (3) through a screw, and the lateral cavity of the mounting seat (3) and the outside form a non-leakage seal.
7. The integrated intelligent oil level indicator with the display screen device according to claim 6, wherein a cavity groove is formed in the panel cover (7), the perspective panel (10) is embedded in the cavity groove of the panel cover (7) and a fit clearance is reserved between the perspective panel and the cavity groove, the depth of the cavity groove is slightly larger than the thickness of the perspective panel (10), and a square through hole is formed in the middle of the cavity groove.
8. The integrated intelligent oil level indicator with the display screen device according to claim 1, wherein the lower layer plate of the PCB plate assembly (13) is provided with a distance measuring sensor towards the lower center.
9. The integrated intelligent oil level indicator with the display screen device according to claim 1, wherein the floating ball assembly (1) comprises a floating ball (1.1), a connecting rod (1.2), a positioning pin (1.3), a blue buoy (1.4) and a red buoy (1.5), the temperature sensor (14) is embedded in an inner hole of the connecting rod (1.2), the large end of the temperature sensor (14) slightly sinks into the lower end face of the floating ball (1.1), and the other end of the temperature sensor (14) is led out from a side hole in the upper end of the red buoy (1.5) through lead connection and then is inserted into the PCB assembly (13) to form electrical connection.
10. The integrated intelligent oil level indicator with the display screen device according to claim 9, wherein the red buoy (1.5) is fixed at one end of the blue buoy (1.4), the small end of the blue buoy (1.4) is fixed at one end of the connecting rod (1.2), the floating ball (1.1) is fixed at the other end of the connecting rod, and the floating ball (1.1) floats up and down to drive the connecting rod (1.2) to slide up and down in the guide seat (3) for a certain displacement, so that the blue buoy (1.4) and the red buoy (1.5) are driven to move up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175800.1A CN114705273A (en) | 2022-02-24 | 2022-02-24 | Intelligent oil level gauge for oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210175800.1A CN114705273A (en) | 2022-02-24 | 2022-02-24 | Intelligent oil level gauge for oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114705273A true CN114705273A (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210175800.1A Pending CN114705273A (en) | 2022-02-24 | 2022-02-24 | Intelligent oil level gauge for oil-immersed transformer |
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| CN (1) | CN114705273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752655A (en) * | 2022-11-01 | 2023-03-07 | 江苏方天电力技术有限公司 | Auxiliary detection device for distribution transformer |
-
2022
- 2022-02-24 CN CN202210175800.1A patent/CN114705273A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752655A (en) * | 2022-11-01 | 2023-03-07 | 江苏方天电力技术有限公司 | Auxiliary detection device for distribution transformer |
| CN115752655B (en) * | 2022-11-01 | 2023-08-22 | 江苏方天电力技术有限公司 | Auxiliary detection device for distribution transformer |
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Effective date of registration: 20221116 Address after: 528,200 104, Building 5, Block A, Hantian Science and Technology City, Guicheng Street, Nanhai District, Foshan City, Guangdong Province Applicant after: Pengyang Intelligent Technology (Guangdong) Co.,Ltd. Address before: 528000 north of Qianjin East Road, Shishan (Guanyao Hongsha) high tech Development Zone, Nanhai District, Foshan City, Guangdong Province Applicant before: GUANGDONG ZHONGPENG ELECTRICAL Co.,Ltd. |