CN111521289A - Liquid medium thermal simulation device for transformer temperature controller - Google Patents
Liquid medium thermal simulation device for transformer temperature controller Download PDFInfo
- Publication number
- CN111521289A CN111521289A CN202010370524.5A CN202010370524A CN111521289A CN 111521289 A CN111521289 A CN 111521289A CN 202010370524 A CN202010370524 A CN 202010370524A CN 111521289 A CN111521289 A CN 111521289A
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- Prior art keywords
- simulation device
- thermal simulation
- temperature
- protective cover
- transformer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
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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
Abstract
The invention discloses a liquid medium thermal simulation device for a transformer temperature controller, which comprises a temperature measurement host, a CT adjusting device, a protection tube, an optical fiber and a thermal simulation device, wherein the temperature measurement host is connected with the CT adjusting device, the CT adjusting device is connected to a CT input wire, the optical fiber is arranged in the protection tube, two ends of the optical fiber are respectively connected to the temperature measurement host and an optical fiber temperature measurement probe, the thermal simulation device is arranged in a transformer oil tank and detachably and fixedly connected to the top of the transformer oil tank through a mounting seat, the thermal simulation device is connected to the CT adjusting device, the optical fiber temperature measurement probe is inserted into the thermal simulation device, and the protection tube is detachably connected to. According to the invention, each module adopts a detachable connection structure, one module is damaged, and the independent module is directly replaced, so that the maintenance is convenient, and the maintenance cost is low.
Description
Technical Field
The invention relates to a liquid medium thermal simulation device for a transformer temperature controller, and belongs to the technical field of transformer temperature controllers.
Background
The traditional winding temperature controller for the transformer uses the temperature measuring principle of a pressure type temperature controller, and volume expansion or pressure change generated after liquid and gas in a closed container are heated is used as a temperature measuring signal. The disadvantages of such a thermostat are the following:
1) the heat loss is large. Because the instrument sealing system (a bulb, a capillary tube and a spring tube) of the traditional temperature controller for the transformer is made of metal, the heat of a temperature measuring point can be naturally dissipated, so that the heat balance time is long, and the temperature of a measured object can not be accurately reflected in a short time;
2) the response speed is slow. Because the traditional temperature controller for the transformer adopts a pressure type, the time for the internal pressure and the external pressure to reach the equilibrium is long, and the response speed is slow;
3) damage to the instrument sealing system (bulb, capillary, spring tube) is difficult to repair. If the instrument sealing system is damaged, the liquid and gas in the instrument sealing system can be leaked, and only the temperature controller can be replaced;
4) the measurement precision is greatly influenced by external factors such as environment temperature, atmospheric pressure and the like;
5) the accuracy is relatively low. Due to mechanical characteristics and principle limitations;
6) the capillary transport distance is limited. The longer the capillary tube, the more liquid, gas stored inside, the lower the meter accuracy.
The optical fiber temperature measuring device for the transformer can directly measure the temperature of a transformer winding, but optical fiber pre-embedding and penetration device pre-welding are required to be carried out according to the particularity of optical fiber temperature measurement in the design and production of the transformer, and the installation of the optical fiber temperature measurement after the production of the transformer is almost impossible.
The Chinese patent application (with the application number of 201910302699. X) provides a transformer temperature controller based on optical fiber temperature measurement, and a thermal simulation device has the defects of uneven conduction in the temperature measurement process, poor stability of the measured temperature of an optical fiber temperature measurement probe, low accuracy of measured data and inconvenience in assembly, disassembly and replacement of all parts.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a liquid medium thermal simulation device for transformer temperature controller to solve the problem that exists among the above-mentioned prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a liquid medium thermal simulation device for transformer temperature controller, including the temperature measurement host computer, CT adjusting device, the protection tube, optic fibre and thermal simulation device, the temperature measurement host computer is connected with CT adjusting device, CT adjusting device is connected to CT input electric wire, optic fibre is arranged in the protection tube, both ends are connected to temperature measurement host computer and optic fibre temperature probe respectively, thermal simulation device arranges in the transformer tank and through mount pad detachably fixed connection at transformer tank top, thermal simulation device is connected to CT adjusting device, optic fibre temperature probe inserts in the thermal simulation device, protection tube detachably connects on mount pad and temperature measurement host computer.
Preferably, the thermal simulation device comprises an outer protective cover, a heating coil and a protective cover bottom sealing plate, wherein the outer protective cover is made of metal materials, the lower end of the outer protective cover is open, a temperature measuring blind hole in which an optical fiber temperature measuring probe is inserted is formed in the upper portion of the outer protective cover, the heating coil is arranged in an inner cavity of the outer protective cover, a liquid temperature conducting medium is contained in the inner cavity of the outer protective cover, and the protective cover bottom sealing plate is connected to the.
Preferably, the heating coil is of a U-shaped structure, and the temperature measuring blind hole is located in the middle of the heating coil.
Preferably, the temperature measuring blind hole and the outer protective cover are of an integrated structure and are made of copper materials.
Preferably, the lead wire of the heating coil is connected to the CT adjusting device, and the lead wire of the heating coil is led out of the upper part of the outer protective cover and sealed by high-temperature sealant.
Preferably, the temperature measuring blind hole is filled with heat-conducting silicone grease after being inserted into the optical fiber temperature measuring probe, and is sealed by using temperature-resistant silicone.
Preferably, the installation base comprises an optical fiber protection cover, a long guide pipe and an installation nut, the lower end of the optical fiber protection cover is fixedly connected to the upper end of the thermal simulation device, the upper end of the optical fiber protection cover is fixedly connected with the long guide pipe, the installation nut is tightly fastened to the long guide pipe in a sealing mode through an installation screw and a sealing rubber ring, the upper end of the long guide pipe is connected with a metal hose joint, and the metal hose joint is connected to the protection pipe through a metal hose fixing piece.
Preferably, the waterproof shrinkable tube is sleeved on the upper section of the protection tube and the mounting seat part above the mounting nut.
Preferably, the optical fiber protective cover is screwed to a screw portion at the upper end of an outer protective cover of the thermal simulation device and sealed with a sealing rubber ring.
Preferably, the temperature measuring host is arranged on the outer wall of the transformer host.
The invention has the beneficial effects that: compared with the prior art, the invention has the following effects:
(1) the invention adopts a detachable connection structure for each module, damages one of the modules, directly replaces an independent module, is convenient to maintain and low in maintenance cost, carries out the oil temperature monitoring of the measuring transformer through an oil temperature measuring blind pipe at the top layer of the transformer, uses a thermal simulation device to superpose temperature rise values according with the copper oil temperature difference of the transformer, indirectly reflects the average temperature of a transformer winding, avoids the problem that the temperature of a measured object cannot be reflected in time due to the heat dissipation of a temperature measuring point, adopts the mode of the thermal simulation device and an optical fiber temperature probe to carry out temperature measurement, directly transmits the temperature through optical fibers, has the temperature measuring speed of optical fiber temperature measurement which is several times faster than that of the traditional pressure type temperature controller, has fast response speed, is not influenced by external factors such as environmental temperature, atmospheric pressure and the like, is not interfered by a strong electric field and a strong electric field of the transformer, has relatively, the installation of transformers of various models is completely met, the installation is simple, the optical fiber probe does not need to be preset before the transformer leaves a factory, and the installation can be carried out at any time;
(2) according to the thermal simulation technology, a heating coil is adopted to heat a liquid temperature conduction medium, the liquid temperature conduction medium is transmitted to the optical fiber temperature measuring probe through an outer protective cover made of a metal material, and the liquid temperature conduction medium (heat conduction medium) is adopted, so that the temperature of the heating coil and the temperature of copper oil are more uniformly transmitted to the optical fiber temperature measuring probe, the measurement is more accurate, the data is more reliable and stable, the structure is simple, the heat transmission effect is good, the accurate measurement of the temperature measuring probe is convenient, the installation of a closed temperature measuring probe is avoided, the heat loss is avoided, the measurement accuracy is higher, the structure is simple, and the;
(3) the high-temperature sealant is adopted for sealing, so that heat dissipation and sealing of a liquid temperature conduction medium can be avoided, and the sealing effect is improved;
(4) pouring heat-conducting silicone grease, and then sealing by using temperature-resistant silica gel, and taking the sealing and fixing effects of the optical fiber probe into consideration;
(5) the mounting seat has a simple structure, is convenient to mount and stable and reliable in connection, the thermal simulation device is convenient to connect with the external protection tube by adopting the extension tube, and the optical fiber protection cover can effectively protect the optical fiber connection optical fiber temperature measurement probe;
(6) the upper part of the mounting seat and a part of the metal hose are tightened by adopting a waterproof shrinkage pipe to perform secondary protection so as to prevent the optical fiber from being damaged due to icing after water is fed;
(7) the connecting mode of the thread sealing rubber ring is adopted, so that the connection is stable and reliable, the connection is convenient, the modular structure is convenient to realize, and the sealing effect is good.
Drawings
FIG. 1 is a schematic view of the mounting structure of the present invention;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic diagram of a thermal simulation apparatus.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in fig. 1-3, a liquid medium thermal simulation device for a transformer temperature controller comprises a temperature measurement host 1, a CT adjusting device 2, a protection tube 3, an optical fiber 4 and a thermal simulation device 5, wherein the temperature measurement host 1 is connected with the CT adjusting device 2, the CT adjusting device 2 is connected to a CT input wire, the optical fiber 4 is arranged in the protection tube 3, two ends of the optical fiber 4 are respectively connected to the temperature measurement host 1 and the optical fiber temperature measurement probe 6, the thermal simulation device 5 is arranged in a transformer oil tank and detachably and fixedly connected to the top of the transformer oil tank through a mounting seat 7, the thermal simulation device 5 is connected to the CT adjusting device 2, the optical fiber temperature measurement probe 6 is inserted into the thermal simulation device 5, and the protection tube 3 is detachably. The fiber winding temperature controller is arranged on a transformer body and is provided with a waterproof shell, the main functions of the fiber winding temperature controller comprise measurement, display, data transmission, dry contact output and the like, the CT adjusting device is a CT current conversion device required by the national standard, the CT current is converted into the range of 0.74A-1.44A, the CT adjusting device is an energy supply device of a thermal simulation device, the protection tube is a stainless steel metal hose, and the fiber winding temperature controller has the functions of protecting a power line of an optical fiber and the thermal simulation device and preventing water.
Preferably, the thermal simulation device 5 comprises an outer protective cover 8 made of metal, a heating coil 9 and a protective cover bottom sealing plate 10, the lower end of the outer protective cover 8 is open, a temperature measuring blind hole 19 in which an optical fiber temperature measuring probe is inserted is formed in the upper portion of the outer protective cover, the heating coil 9 is arranged in an inner cavity of the outer protective cover 8, a liquid temperature conducting medium 10 is contained in the inner cavity of the outer protective cover 8, the protective cover bottom sealing plate 10 is connected to the bottom end of the outer protective cover 8 in a sealing mode, and the thermal simulation device is integrated and comprises the outer protective cover, an inner core, a protective cover bottom. When in production, firstly, the external lead of the heating coil passes through the corresponding mounting hole of the external protective cover, and the heating coil with the protective insulating layer is connected with the belt. And sealing the mounting hole of the external lead of the heating coil by using high-temperature sealant. And then inverting the outer protective cover, injecting an insulating liquid temperature conduction medium with low expansion coefficient into the outer protective cover, and finally sealing the inside of the outer protective cover by using a protective cover bottom sealing plate so that the liquid temperature conduction medium is sealed in the outer protective cover.
Preferably, the heating coil 9 is of a U-shaped structure, and the blind temperature measuring hole 19 is located in the middle of the heating coil 9.
Preferably, the temperature measuring blind hole 19 and the outer protective cover 8 are of an integral structure and are made of copper materials.
Preferably, the lead wire of the heating coil 9 is connected to the CT adjusting device 2, and the lead wire of the heating coil 9 is led out of the upper part of the outer protective cover 8 and sealed by high-temperature sealant.
Preferably, the temperature measuring blind hole 19 is filled with heat-conducting silicone grease after being inserted into the optical fiber temperature measuring probe 6, the optical fiber temperature measuring probe is sealed by using temperature-resistant silicone, the optical fiber probe is inserted into the temperature measuring hole of the outer protective cover, the heat-conducting silicone grease is filled, the optical fiber temperature measuring probe is sealed by using the temperature-resistant silicone grease, and the effects of sealing and fixing the optical fiber probe are taken into consideration.
Preferably, the mounting base 7 comprises an optical fiber protection cover 11, an elongation pipe 12 and a mounting nut 13, the lower end of the optical fiber protection cover 11 is fixedly connected to the upper end of the thermal simulation device 5, the upper end of the optical fiber protection cover is fixedly connected to the elongation pipe 12, the mounting nut 13 is tightly sealed and fastened on the elongation pipe 12 by a mounting screw 14 and a sealing rubber ring I15, the upper end of the elongation pipe 12 is connected with a metal hose connector 16, the metal hose connector 16 is of a sleeve structure, the metal hose connector is fastened on the upper end of the elongation pipe 12 by a set screw, the metal hose connector 16 is in threaded connection with a metal hose fixing part 17 arranged at the end part of the protection pipe 3, and the metal hose fixing; the upper section of the protection tube 3 and the part of the mounting seat 7 above the mounting nut 13 are sleeved with a waterproof contraction tube, and the mounting seat consists of a metal hose fixing piece, a metal hose joint, a mounting screw, a mounting nut, a lengthened pipe and an optical fiber protective cover. After the related connection points are welded, the threads are sealed and sealed by rubber rings, after the assembly is finished, the upper part of the mounting seat and a part of metal hoses are tightened by using the waterproof shrinkage pipe, and secondary protection is performed so as to prevent the optical fibers from being damaged due to icing after water enters the mounting seat.
Preferably, the optical fiber protection cover 11 is connected to a threaded part at the upper end of the outer protection cover 8 of the thermal simulation device 5 through threads and is sealed by a sealing rubber ring to form a second 18, and the thermal simulation device is fixed and sealed with the mounting seat through the threads on the outer protection cover, so that transformer oil in the transformer temperature measurement blind pipe is prevented from entering.
Preferably, the temperature measuring host 1 is installed on the outer wall of the transformer host, and is provided with a waterproof shell, and the main functions of the temperature measuring host include measurement, display, data transmission, dry contact output and the like.
During installation, the installation screw is loosened, and after the installation nut is screwed, the installation screw is screwed. The temperature of the thermal simulation device is measured by the optical fiber probe of the temperature measurement host, and the temperature of the thermal simulation device is the combined action of the temperature of the transformer oil and the heating effect of the heating coil and represents the average temperature of the transformer winding.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (10)
1. The utility model provides a liquid medium thermal simulation device for transformer temperature controller which characterized in that: including temperature measurement host computer (1), CT adjusting device (2), protection tube (3), optic fibre (4) and thermal simulation device (5), temperature measurement host computer (1) is connected with CT adjusting device (2), CT adjusting device (2) are connected to CT input electric wire, protection tube (3) are arranged in optic fibre (4), both ends are connected to temperature measurement host computer (1) and optic fibre temperature probe (6) respectively, thermal simulation device (5) are arranged in the transformer tank and are passed through mount pad (7) detachably fixed connection at transformer tank top, thermal simulation device (5) are connected to CT adjusting device (2), optic fibre temperature probe (6) are inserted in thermal simulation device (5), protection tube (3) detachably is connected on mount pad (7) and temperature measurement host computer (1).
2. The liquid medium thermal simulation device for the transformer temperature controller according to claim 1, wherein: the thermal simulation device (5) comprises an outer protective cover (8), a heating coil (9) and a protective cover bottom sealing plate (10) which are made of metal materials, the lower end of the outer protective cover (8) is opened, a temperature measurement blind hole (19) for inserting an optical fiber temperature measurement probe is formed in the upper portion of the outer protective cover, the heating coil (9) is arranged in an inner cavity of the outer protective cover (8), a liquid temperature conducting medium (10) is filled in the inner cavity of the outer protective cover (8), and the protective cover bottom sealing plate (10) is connected to the bottom end of the outer protective cover.
3. The liquid medium thermal simulation device for the transformer temperature controller according to claim 2, wherein: the heating coil (9) is of a U-shaped structure, and the temperature measuring blind hole (19) is positioned in the middle of the heating coil (9).
4. The liquid medium thermal simulation device for the transformer temperature controller according to claim 2, wherein: the temperature measuring blind hole (19) and the outer protective cover (8) are of an integral structure and are made of copper materials.
5. The liquid medium thermal simulation device for the transformer temperature controller according to claim 2, wherein: the lead of the heating coil (9) is connected to the CT adjusting device (2), and the lead of the heating coil (9) is led out of the upper part of the outer protective cover (8) and sealed by high-temperature sealant.
6. The liquid medium thermal simulation device for the transformer temperature controller according to claim 2, wherein: the temperature measuring blind hole (19) is filled with heat-conducting silicone grease after being inserted into the optical fiber temperature measuring probe (6) and is sealed by temperature-resistant silicone.
7. The liquid medium thermal simulation device for the transformer temperature controller according to claim 1, wherein: the mounting seat (7) comprises an optical fiber protection cover (11), an elongated tube (12) and a mounting nut (13), the lower end of the optical fiber protection cover (11) is fixedly connected to the upper end of the thermal simulation device (5), the upper end of the optical fiber protection cover is fixedly connected with the elongated tube (12), the mounting nut (13) is tightly fastened on the elongated tube (12) through a mounting screw (14) and a sealing rubber ring (15) in a sealing mode, the upper end of the elongated tube (12) is connected with a metal hose connector (16), and the metal hose connector (16) is connected to the protection tube (3) through a metal hose fixing piece (17).
8. The liquid medium thermal simulation device for the transformer temperature controller according to claim 7, wherein: the upper section of the protection tube (3) and the part of the mounting seat (7) above the mounting nut (13) are sleeved with a waterproof shrinkage tube.
9. The liquid medium thermal simulation device for the transformer temperature controller according to claim 7, wherein: the optical fiber protective cover (11) is connected to the threaded part at the upper end of the outer protective cover (8) of the thermal simulation device (5) through threads and is sealed by a sealing rubber ring II (18).
10. The liquid medium thermal simulation device for the transformer temperature controller according to claim 1, wherein: the temperature measurement host (1) is arranged on the outer wall of the transformer host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010370524.5A CN111521289A (en) | 2020-05-06 | 2020-05-06 | Liquid medium thermal simulation device for transformer temperature controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010370524.5A CN111521289A (en) | 2020-05-06 | 2020-05-06 | Liquid medium thermal simulation device for transformer temperature controller |
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| Publication Number | Publication Date |
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| CN111521289A true CN111521289A (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010370524.5A Pending CN111521289A (en) | 2020-05-06 | 2020-05-06 | Liquid medium thermal simulation device for transformer temperature controller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2299408C1 (en) * | 2006-03-28 | 2007-05-20 | Общество с ограниченной ответственностью "Производственная компания "ТЕСЕЙ" | Device for measuring temperature in form of thermo-electric transformer |
| CN201397204Y (en) * | 2009-02-26 | 2010-02-03 | 浙江电力变压器有限公司 | Stay type structure embedded with fiber optic temperature measuring probe |
| US20110150027A1 (en) * | 2009-12-21 | 2011-06-23 | Weiss Instruments, Inc. | Mechanical and electronic temperature reading system with built-in failure and inaccuracy detection |
| CN204101996U (en) * | 2014-06-26 | 2015-01-14 | 泰安屹思达智能科技有限公司 | Based on the temperature measurement and control instrument of transformer |
| CN109979738A (en) * | 2019-04-16 | 2019-07-05 | 大连世有电力科技有限公司 | Transformer temperature controller based on optical fiber temperature-measurement |
-
2020
- 2020-05-06 CN CN202010370524.5A patent/CN111521289A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2299408C1 (en) * | 2006-03-28 | 2007-05-20 | Общество с ограниченной ответственностью "Производственная компания "ТЕСЕЙ" | Device for measuring temperature in form of thermo-electric transformer |
| CN201397204Y (en) * | 2009-02-26 | 2010-02-03 | 浙江电力变压器有限公司 | Stay type structure embedded with fiber optic temperature measuring probe |
| US20110150027A1 (en) * | 2009-12-21 | 2011-06-23 | Weiss Instruments, Inc. | Mechanical and electronic temperature reading system with built-in failure and inaccuracy detection |
| CN204101996U (en) * | 2014-06-26 | 2015-01-14 | 泰安屹思达智能科技有限公司 | Based on the temperature measurement and control instrument of transformer |
| CN109979738A (en) * | 2019-04-16 | 2019-07-05 | 大连世有电力科技有限公司 | Transformer temperature controller based on optical fiber temperature-measurement |
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Application publication date: 20200811 |