CN100554981C - Electric power transformer insulated on-line monitoring sensor mounting device - Google Patents
Electric power transformer insulated on-line monitoring sensor mounting device Download PDFInfo
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- CN100554981C CN100554981C CNB2008100693404A CN200810069340A CN100554981C CN 100554981 C CN100554981 C CN 100554981C CN B2008100693404 A CNB2008100693404 A CN B2008100693404A CN 200810069340 A CN200810069340 A CN 200810069340A CN 100554981 C CN100554981 C CN 100554981C
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Abstract
A kind of electric power transformer insulated on-line monitoring sensor mounting device relates to transformer insulated on-line monitoring sensor mounting device, solves the problem that on-line monitoring must be pre-installed in the transformer manufacture process with sensor or could install after transformer has a power failure and emits insulating oil.Technical scheme of the present invention comprises pedestal, movable probe, end cap and oil-resistant seal ring.One end of pedestal is fixed on the fuel outlet valve of power transformer; Movable probe is a T shape cylinder, and an end of this T shape cylinder is fixed on the cylinder end face of pedestal and by oil-resistant seal ring and realizes sealing, and the other end of this T shape cylinder passes the through hole in the pedestal.The ring groove on the cylinder end face of pedestal and this cylinder end face and the surface roughness parameter profile arithmetic average error Ra of movable probe outside surface are 1.25～3.2 μ m.The present invention can be under normal operation of power transformer or power down mode the Fast Installation insulated on-line monitoring sensor, avoid that insulating oil leaks in the installation process.
Description
Technical field
The present invention relates to a kind of electric power transformer insulated on-line monitoring sensor mounting device.
Background technology
Power transformer is one of visual plant in the electric system, and its stable operation has crucial meaning to improving power supply reliability.For improving power supply reliability, the department of transformer operation both at home and abroad just progressively guarantees its stable operation by the mode that installs insulated on-line monitoring system additional.At present, the transformer insulated on-line monitoring system mainly adopts sensor to obtain the running status characteristic parameter of transformer, and these sensors all must be installed in the transformer manufacture process or could be installed after transformer is stopped transport and emitted insulating oil in advance.Yet the stoppage in transit of transformer not only can reduce the reliability of electric system, also can bring enormous economic loss and serious social influence to transformer operation department.Therefore, solve that transformer online monitoring must be pre-installed with sensor or in power failure and the realistic problem that could install after emitting insulating oil in manufacture process, realize insulated on-line monitoring sensor under normal operation of power transformer or power down mode Fast Installation and avoid the insulating oil in the installation process to leak, help improving the safe operation of transformer, improve power supply reliability.
Summary of the invention
The object of the present invention is to provide a kind of electric power transformer insulated on-line monitoring sensor mounting device, realize insulated on-line monitoring sensor under normal operation of power transformer or power down mode Fast Installation and avoid the insulating oil in the installation process to leak.
For achieving the above object, technical scheme of the present invention is:
A kind of electric power transformer insulated on-line monitoring sensor mounting device is characterized in that this device comprises pedestal (1), movable probe (2), end cap (3), first oil-resistant seal ring (4) and second oil-resistant seal ring (5); One end of pedestal (1) is thickness 15～35mm disk body, be distributed with on this disk body with the power transformer fuel outlet valve on the corresponding through hole of connecting hole, the other end of pedestal (1) is the cylinder of thickness 60～300mm, be distributed with connecting hole and ring groove on this cylinder end face, it is the through hole of 23～80mm that one and diameter parallel with the through hole in the disk body of pedestal (1) arranged in the pedestal (1), 2～5 ring grooves are arranged on this through-hole wall, and the disk body of pedestal (1) is fixed on the fuel outlet valve of power transformer by screw and O-ring seal; Movable probe (2) is a T shape cylinder, this T shape cylinder one end thickness is 5～15mm, be distributed with the corresponding through hole of connecting hole on the cylinder end face with pedestal (1) on it, long 200～the 800mm of this T shape cylinder other end, overall diameter is 20～75mm, one end of movable probe (2) by screw retention on the cylinder end face of pedestal (1), and by the sealing of second oil-resistant seal ring (5) in the ring groove on pedestal (1) the cylinder end face, the other end of movable probe (2) passes the through hole in the pedestal (1) and passes through interior first oil-resistant seal ring (4) sealing of 2～5 interior ring grooves of pedestal (1) through hole, it is the through hole of 15～70mm that one diameter is arranged in the movable probe (2), and the other end port of movable probe (2) is connected by thread seal with end cap (3); The surface roughness parameter profile arithmetic average error Ra of the ring groove on the cylinder end face of pedestal (1) and this cylinder end face and the outside surface of movable probe (2) is 1.25～3.2 μ m.
Pedestal (1) and movable probe (2) adopt same material to process.
Electric power transformer insulated on-line monitoring sensor mounting device is installed according to the following steps:
1., first oil-resistant seal ring (4) is installed: first oil-resistant seal ring (4) is installed in 2～5 interior ring grooves of pedestal (1) inner via hole;
2., movable probe (2) is installed: the other end of movable probe (2) is passed the interior through hole of pedestal (1);
3., end cap (3) is installed: sensor (6) is fixed in the end cap (3), and end cap (3) is installed on the movable probe (2);
4., mounting base (1): mobile movable probe (2), end cap (3) is in the inner through hole of pedestal (1), then pedestal (1) is fixed on the fuel outlet valve of power transformer;
5., second oil-resistant seal ring (5) is installed: second oil-resistant seal ring (5) is installed in the ring groove of pedestal (1) cylinder end face;
6., open the fuel outlet valve of power transformer, mobile movable probe (2) makes an end end face of movable probe (2) contact with the cylinder end face of pedestal (1) and fixing.
The present invention has following technique effect:
Be the power transformer Fast Installation insulated on-line monitoring sensor under normal operation or the power down mode, avoid occurring in the installation process insulating oil and leak, solve that transformer online monitoring must be pre-installed with sensor or in power failure and the problem that could install after emitting insulating oil in manufacture process.The critical piece movable probe of electric power transformer insulated on-line monitoring sensor mounting device and the surface roughness parameter Ra of pedestal are 1.25～3.2 μ m, use oil-resistant seal ring can realize sealing; In the movable probe moving process, realize sealing by the oil-resistant seal ring in the seal groove on the pedestal inner via hole inwall between pedestal and the movable probe; After install finishing, seal by the oil-resistant seal ring in oil-resistant seal ring in the seal groove on the pedestal inner via hole inwall and the pedestal cylinder end face ring shape groove between movable probe and the pedestal, guaranteeing in the installation process and install can leakage of oil after finishing.This device is by the installation of the fuel outlet valve realization transformer insulated on-line monitoring sensor of transformer, because fuel outlet valve is positioned at the bottom of transformer, installation personnel can not contact with the high voltage end of transformer when mounted, and personnel are fool proof; The movable probe of this device and the size of pedestal are to determine according to the physical size of transformer, therefore the end face of end cap can not extend into the inside surface of transformer tank wall in the installation process, and it is just in time concordant with the inside surface of transformer tank wall that the end face that finishes rear end cap is installed, the installation that guarantees sensor can not impact the parameters such as Electric Field Distribution of transformer inside, promptly can not influence the normal operation of transformer; General transformer all has more than one fuel outlet valve, and the structure that this device does not need to change transformer body is installed, and also can not influence the safe operation of transformer.Therefore, this device realized insulated on-line monitoring sensor under normal operation of power transformer or power down mode Fast Installation and avoid the insulating oil in the installation process to leak.
Description of drawings
Fig. 1 is a kind of structure drawing of device of the present invention.
Fig. 2 is the right view of pedestal (1).
Fig. 3 is the A-A sectional view among Fig. 2.
Fig. 4 is the main cut-open view of movable probe (2).
Embodiment
Embodiment 1:
A kind of electric power transformer insulated on-line monitoring sensor mounting device comprises pedestal (1), movable probe (2), end cap (3), first oil-resistant seal ring (4) and second oil-resistant seal ring (5).One end of pedestal (1) is the disc of thickness 35mm, be evenly distributed with 4 diameters corresponding on the same circumference of this disc and be the round tube hole of 14mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 300mm, connection circular hole that to be evenly distributed with 4 diameters on the same circumference of this right cylinder end face be 10mm and diameter and width are respectively 110mm, 4.5mm the annular seal groove, it is the round tube hole of 78mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 5 diameters is arranged, width is respectively 81mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 15mm, 220mm, be distributed with 4 the corresponding round tube holes that diameter is 10mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 800mm of this T shape right cylinder other end, overall diameter is 75mm, and it is the round tube hole of 70mm that a diameter is arranged in the movable probe (2); Movable probe (2) is by the sealing of O type second oil-resistant seal ring (5) in the annular seal groove on the right cylinder end face of pedestal (1), and the other end of movable probe (2) passes the interior round tube hole of pedestal (1) and seals by O type first oil-resistant seal ring (4) in 5 annular seal grooves in the interior round tube hole of pedestal (1); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the right cylinder end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 3.2 μ m; Pedestal (1) and movable probe (2) all are processed into stainless steel.
Embodiment 2:
A kind of electric power transformer insulated on-line monitoring sensor mounting device comprises pedestal (1), movable probe (2), end cap (3), first oil-resistant seal ring (4) and second oil-resistant seal ring (5).One end of pedestal (1) is the disc of thickness 20mm, be evenly distributed with 8 diameters corresponding on the same circumference of this disc and be the round tube hole of 10mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 180mm, connection circular hole that to be evenly distributed with 8 diameters on the same circumference of this right cylinder end face be 6mm and diameter and width are respectively 70mm, 4.5mm the annular seal groove, it is the round tube hole of 53mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 4 diameters is arranged, width is respectively 56mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 10mm, 90mm, be distributed with 8 the corresponding round tube holes that diameter is 6mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 400mm of this T shape right cylinder other end, overall diameter is 50mm, and it is the round tube hole of 40mm that a diameter is arranged in the movable probe (2); Movable probe (2) is by the sealing of O type second oil-resistant seal ring (5) in the annular seal groove on the right cylinder end face of pedestal (1), and the other end of movable probe (2) passes the interior round tube hole of pedestal (1) and seals by O type first oil-resistant seal ring (4) in 4 annular seal grooves in the interior round tube hole of pedestal (1); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the right cylinder end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 1.6 μ m; Pedestal (1) and movable probe (2) all are processed into stainless steel.
Embodiment 3:
A kind of electric power transformer insulated on-line monitoring sensor mounting device comprises pedestal (1), movable probe (2), end cap (3), first oil-resistant seal ring (4) and second oil-resistant seal ring (5).One end of pedestal (1) is the disc of thickness 15mm, be evenly distributed with 6 diameters corresponding on the same circumference of this disc and be the round tube hole of 12mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 60mm, connection circular hole that to be evenly distributed with 6 diameters on the same circumference of this right cylinder end face be 8mm and diameter and width are respectively 42mm, 4.5mm the annular seal groove, it is the round tube hole of 23mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 2 diameters is arranged, width is respectively 26mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 5mm, 50mm, be distributed with 6 the corresponding round tube holes that diameter is 8mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 200mm of this T shape right cylinder other end, overall diameter is 20mm, and it is the round tube hole of 15mm that a diameter is arranged in the movable probe (2); Movable probe (2) is by the sealing of O type second oil-resistant seal ring (5) in the annular seal groove on the right cylinder end face of pedestal (1), and the other end of movable probe (2) passes the interior round tube hole of pedestal (1) and seals by O type first oil-resistant seal ring (4) in 2 annular seal grooves in the interior round tube hole of pedestal (1); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the right cylinder end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 1.25 μ m; Pedestal (1) and movable probe (2) all are processed into copper.
Claims (5)
1. an electric power transformer insulated on-line monitoring sensor mounting device is characterized in that this device comprises pedestal (1), movable probe (2), end cap (3), first oil-resistant seal ring (4) and second oil-resistant seal ring (5); One end of pedestal (1) is thickness 15～35mm disk body, be distributed with on this disk body with the power transformer fuel outlet valve on the corresponding through hole of connecting hole, the other end of pedestal (1) is the cylinder of thickness 60～300mm, be distributed with connecting hole and ring groove on this cylinder end face, it is the through hole of 23～80mm that one and diameter parallel with the through hole in the disk body of pedestal (1) arranged in the pedestal (1), 2～5 ring grooves are arranged on this through-hole wall, and the disk body of pedestal (1) is fixed on the fuel outlet valve of power transformer by screw and O-ring seal; Movable probe (2) is a T shape cylinder, this T shape cylinder one end thickness is 5～15mm, be distributed with the corresponding through hole of connecting hole on the cylinder end face with pedestal (1) on it, long 200～the 800mm of this T shape cylinder other end, overall diameter is 20～75mm, one end of movable probe (2) by screw retention on the cylinder end face of pedestal (1), and by the sealing of second oil-resistant seal ring (5) in the ring groove on pedestal (1) the cylinder end face, the other end of movable probe (2) passes the through hole in the pedestal (1) and passes through interior first oil-resistant seal ring (4) sealing of 2～5 interior ring grooves of pedestal (1) through hole, it is the through hole of 15～70mm that one diameter is arranged in the movable probe (2), and the other end port of movable probe (2) is connected by thread seal with end cap (3); The surface roughness parameter profile arithmetic average error Ra of the ring groove on the cylinder end face of pedestal (1) and this cylinder end face and the outside surface of movable probe (2) is 1.25～3.2 μ m.
2. electric power transformer insulated on-line monitoring sensor mounting device according to claim 1 is characterized in that: pedestal (1) and movable probe (2) adopt same material to process.
3. electric power transformer insulated on-line monitoring sensor mounting device according to claim 1, it is characterized in that: an end of pedestal (1) is the disc of thickness 35mm, be evenly distributed with 4 diameters corresponding on the same circumference of this disc and be the round tube hole of 14mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 300mm, connection circular hole that to be evenly distributed with 4 diameters on the same circumference of this right cylinder end face be 10mm and diameter and width are respectively 110mm, 4.5mm the annular seal groove, it is the round tube hole of 78mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 5 diameters is arranged, width is respectively 81mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 15mm, 220mm, be distributed with 4 the corresponding round tube holes that diameter is 10mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 800mm of this T shape right cylinder other end, overall diameter is 75mm, and it is the round tube hole of 70mm that a diameter is arranged in the movable probe (2); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the net post body end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 3.2 μ m; Pedestal (1) and movable probe (2) all are processed into stainless steel.
4. electric power transformer insulated on-line monitoring sensor mounting device according to claim 1, it is characterized in that: an end of pedestal (1) is the disc of thickness 20mm, be evenly distributed with 8 diameters corresponding on the same circumference of this disc and be the round tube hole of 10mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 180mm, connection circular hole that to be evenly distributed with 8 diameters on the same circumference of this right cylinder end face be 6mm and diameter and width are respectively 70mm, 4.5mm the annular seal groove, it is the round tube hole of 53mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 4 diameters is arranged, width is respectively 56mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 10mm, 90mm, be distributed with 8 the corresponding round tube holes that diameter is 6mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 400mm of this T shape right cylinder other end, overall diameter is 50mm, and it is the round tube hole of 40mm that a diameter is arranged in the movable probe (2); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the right cylinder end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 1.6 μ m; Pedestal (1) and movable probe (2) all are processed into stainless steel.
5. electric power transformer insulated on-line monitoring sensor mounting device according to claim 1, it is characterized in that: an end of pedestal (1) is the disc of thickness 15mm, be evenly distributed with 6 diameters corresponding on the same circumference of this disc and be the round tube hole of 12mm with connecting hole on the power transformer fuel outlet valve, the other end of pedestal (1) is the right cylinder of thickness 60mm, connection circular hole that to be evenly distributed with 6 diameters on the same circumference of this right cylinder end face be 8mm and diameter and width are respectively 42mm, 4.5mm the annular seal groove, it is the round tube hole of 23mm that one and diameter parallel with the round tube hole in the disc of pedestal (1) arranged in the pedestal (1), on the round tube hole inwall in the pedestal (1) 2 diameters is arranged, width is respectively 26mm, 4.5mm annular seal groove; The T shape right cylinder one end thickness of movable probe (2), diameter are respectively 5mm, 50mm, be distributed with 6 the corresponding round tube holes that diameter is 8mm of connection circular hole on the right cylinder end face with pedestal (1) on it, the long 200mm of this T shape right cylinder other end, overall diameter is 20mm, and it is the round tube hole of 15mm that a diameter is arranged in the movable probe (2); The surface roughness parameter profile arithmetic average error Ra of the annular seal groove on the right cylinder end face of pedestal (1) and this right cylinder end face and the outside surface of movable probe (2) is 1.25 μ m; Pedestal (1) and movable probe (2) all are processed into copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100693404A CN100554981C (en) | 2008-02-01 | 2008-02-01 | Electric power transformer insulated on-line monitoring sensor mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100693404A CN100554981C (en) | 2008-02-01 | 2008-02-01 | Electric power transformer insulated on-line monitoring sensor mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101236227A CN101236227A (en) | 2008-08-06 |
| CN100554981C true CN100554981C (en) | 2009-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100693404A Expired - Fee Related CN100554981C (en) | 2008-02-01 | 2008-02-01 | Electric power transformer insulated on-line monitoring sensor mounting device |
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|---|---|
| CN (1) | CN100554981C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338645A (en) * | 2011-03-07 | 2012-02-01 | 南通大通宝富风机有限公司 | Conversion device of sensor probe |
| CA3048995C (en) | 2016-12-31 | 2023-12-12 | Abb Schweiz Ag | Systems and methods for monitoring components in a power transformer or the like |
| CN111345805B (en) * | 2020-02-29 | 2021-03-26 | 北京航空航天大学 | Buckle type heat insulation wearable system for measuring human magnetocardiogram |
-
2008
- 2008-02-01 CN CNB2008100693404A patent/CN100554981C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 电气设备绝缘在线监测传感器的研究. 唐炬，孙才新，李剑.高压电器，第1期. 1998 |
| 电气设备绝缘在线监测传感器的研究. 唐炬，孙才新，李剑.高压电器，第1期. 1998 * |
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| CN101236227A (en) | 2008-08-06 |
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Granted publication date: 20091028 Termination date: 20120201 |