CN114496484B - Energy-saving current limiting device for electric field treatment of transformer substation - Google Patents
Energy-saving current limiting device for electric field treatment of transformer substation Download PDFInfo
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- CN114496484B CN114496484B CN202210165001.6A CN202210165001A CN114496484B CN 114496484 B CN114496484 B CN 114496484B CN 202210165001 A CN202210165001 A CN 202210165001A CN 114496484 B CN114496484 B CN 114496484B
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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
- H01F27/085—Cooling by ambient air
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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
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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
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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
- H01F27/025—Constructional details relating to cooling
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
- H02H9/021—Current limitation using saturable reactors
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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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The invention belongs to the technical field of heat dissipation of current-limiting reactors, and particularly relates to an energy-saving current-limiting device for electric field treatment of a transformer substation, which comprises a reactor main body, a fan and a cooling assembly, wherein the cooling assembly comprises an operating cylinder, a telescopic rod and a supporting box, the operating cylinder is fixedly connected to the outer wall of the reactor main body, and the telescopic rod is fixedly connected to the bottom of the operating cylinder; according to the invention, through the reciprocating movement of the telescopic rod, the high-temperature gas in the reactor main body is quickly discharged to the outside by the principle similar to an air box, the gas flowing speed in the reactor main body is increased, so that the reactor coil can be quickly cooled to directly dissipate heat of a heating source of the reactor main body during operation, the reactor coil is quickly heated during operation, the inside of the reactor main body can be quickly cooled, a ventilation pipe does not need to be embedded, the later maintenance cost of personnel is reduced, and the heat dissipation cost of the whole current-limiting reactor is reduced.
Description
Technical Field
The invention belongs to the technical field of heat dissipation of current-limiting reactors, and particularly relates to an energy-saving current-limiting device for electric field treatment of a transformer substation.
Background
The current-limiting reactor is a reactor which is directly connected in series in a power system and is used for limiting system fault current, and the current-limiting reactor is an inductive element for limiting switching-on inrush current, higher harmonic, short-circuit fault current and the like in the system; in modern power systems, a current-limiting reactor is additionally arranged or a high-impedance transformer is selected to limit short-circuit current, so that the method is the most common method which is economical and practical at present.
When the current limiting reactor is used, the temperature of an impedance limiting chamber outside the current limiting reactor is generally high, particularly, the temperature is more serious in a high-temperature area, the indoor temperature in summer often exceeds 45 ℃, the requirement of normal operation of equipment is exceeded, the current limiting reactor is a large reactor due to overhigh temperature, the power loss of the current limiting reactor is a direct source of heat, and the space of the impedance limiting chamber outside the current limiting reactor is narrow, so that the exchange of internal airflow and external airflow is slow, the heat is concentrated, and the internal temperatures of the impedance limiting chamber and the current limiting reactor are high.
The current-limiting reactor mainly has the following heat dissipation modes and advantages and disadvantages:
firstly, a current-limiting reactor is connected in parallel with a short-circuit current limiting breaker, so that the current-limiting reactor only generates a small amount of heat when a circuit does not work normally, but the problem that the short-circuit current is limited by the current-limiting reactor, and the short-time heat productivity of the current-limiting reactor is high cannot be solved;
secondly, the size of the vent holes of the impedance limiting chamber and the number of the ventilation devices are increased, but the impedance limiting chamber is smaller, so that the vent holes are not too large, the current limiting reactor is a main heating source, the heat dissipation efficiency of the ventilation devices on the impedance limiting chamber is not high, the investment cost is increased by increasing the ventilation devices, if the enclosing wall of the impedance limiting chamber is cancelled, the laying path of a circuit needs to be designed, the safety distance of the live equipment and a conductor is ensured, the requirement on safety is higher, and the investment cost is increased;
thirdly, through adopting the air current to dredge the scheme, because the current-limiting reactor is the main source that generates heat, through the pre-buried sealed ventilation pipe in current-limiting reactor bottom, can effectively increase the inside air current flow speed of current-limiting reactor, realize the inside heat dissipation of current-limiting reactor, but pre-buried ventilation pipe needs personnel's periodic maintenance, otherwise the ventilation pipe appears blockking up and can't guarantee that the current-limiting reactor normally dispels the heat, causes artifical maintenance cost higher.
In conclusion, the existing current-limiting reactor has high heat dissipation cost in the heat dissipation process, and the internal temperature of the current-limiting reactor can be accelerated to rise when the current-limiting reactor limits the short-circuit current, so that the inside of the reactor can not be quickly dissipated.
In view of this, the present invention provides an energy-saving current limiting device for electric field management of a transformer substation to solve the above technical problem.
Disclosure of Invention
The invention provides an energy-saving current-limiting device for electric field management of a transformer substation, aiming at overcoming the defects of the prior art and solving the technical problems that the heat dissipation cost of the current-limiting reactor is high in the heat dissipation process, the internal temperature of the current-limiting reactor is accelerated to rise when the current-limiting reactor limits short-circuit current, the internal part of the reactor cannot be rapidly dissipated, and the like.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to an energy-saving current-limiting device for electric field treatment of a transformer substation, which comprises:
the reactor comprises a reactor main body, wherein a reactor coil is fixedly connected in the reactor main body;
the fan is fixedly connected to the inner wall of the reactor main body;
further comprising:
the temperature reduction component is arranged on the outer wall of the reactor main body and is used for enhancing the heat dissipation efficiency of the reactor main body;
and the inner wall of the reactor main body is fixedly connected with a temperature sensor.
Preferably, the cooling assembly comprises:
the operation barrel is fixedly connected to the outer wall of the reactor main body and is positioned above the reactor coil;
the operating cylinders are distributed along the circumferential direction of the central axis of the reactor main body;
the telescopic rod is fixedly connected to the bottom of the operation cylinder, and the temperature sensor is electrically connected with the telescopic rod;
the supporting box is positioned above the operating cylinder and fixedly connected with the outer wall of the reactor main body;
the outer wall of the supporting box is provided with exhaust holes, and the number of the exhaust holes corresponds to the number of the operation cylinders one to one.
Preferably, a first rotating plate is rotatably connected to one side of the exhaust hole in the supporting box;
the opposite surface of the first rotating plate is rotatably connected with a second rotating plate;
the first rotating plate and the second rotating plate are limited by the inner wall of the supporting box respectively and are used for enabling the rotating directions of the first rotating plate and the second rotating plate to be the same.
Preferably, the reactor main body is in a vertically through state, and the fans are respectively located at the upper side and the lower side of the reactor coil;
the upper end and the lower end of the reactor main body are fixedly connected with protective nets respectively, and the protective nets are used for preventing external impurities from entering the reactor main body.
Preferably, an air storage cylinder is arranged on one side of the operation cylinder and is fixedly connected with the outer wall of the reactor main body.
Preferably, a one-way valve is fixedly connected between the air storage cylinder and the operation cylinder, and the one-way valve is respectively communicated with the air storage cylinder and the operation cylinder;
the flow direction of the one-way valve is from the operation cylinder to the air storage cylinder.
Preferably, an air pressure sensor and an electromagnetic valve are fixedly arranged inside the air storage cylinder;
the upper end of the air storage cylinder is fixedly connected with a first guide pipe, and the first guide pipe is communicated with the air storage cylinder;
a second conduit is fixedly connected to the outer part of the first conduit, and the second conduit is communicated with the first conduit;
the solenoid valve is located inside the first conduit.
Preferably, air outlet holes are formed in the inner walls above and below the reactor main body;
the first duct and the second duct are communicated with the air outlet hole.
Preferably, an electromagnetic slide rail is fixedly connected above the supporting box and on the inner wall of the reactor main body;
a winding drum is fixedly connected in the electromagnetic sliding rail, and a cloth winding shaft is arranged on the outer side of the winding drum;
the cloth rolling shaft is connected with the electromagnetic slide rail in a sliding manner.
Preferably, a plurality of chip removal holes are formed in one side of the winding drum and on the inner wall of the reactor main body.
The invention has the following beneficial effects:
1. according to the transformer substation electric field treatment energy-saving current-limiting device, the telescopic rod moves in a reciprocating manner, the principle similar to that of an air box is adopted, high-temperature gas in the reactor main body is quickly discharged to the outside, the gas flowing speed in the reactor main body is increased, and the reactor coil can be quickly cooled during operation; and a plurality of operation section of thick bamboo distributes along the central axis circumference of reactor main part and has been provided, and temperature sensor can select the start-up quantity of telescopic link according to the actual temperature in the reactor main part to need not when reactor coil restriction short-circuit current, start all telescopic links, reduced power consumption, need not to carry out pre-buried ventilation pipe, reduced personnel's later maintenance cost, thereby reduced the heat dissipation cost of whole current-limiting reactor.
2. According to the energy-saving current-limiting device for electric field treatment of the transformer substation, the electromagnetic slide rail is started by the aid of the electric signal through the air pressure sensor, the driving module in the electromagnetic slide rail drives the cloth rolling shaft to slide for a circle along the track of the electromagnetic slide rail, meanwhile, the cloth rolling shaft can pull the rolled cloth of the winding drum to expand and form a cone, so that when gas discharged from the air outlet above the reactor main body cleans the protective screen, impurities such as dust on the protective screen fall onto the rolled cloth expanded in the winding drum under the action of gravity, and the fallen impurities such as dust can slide along the outer surface of the rolled cloth and then are discharged to the outside of the reactor main body from the scrap discharge hole, so that personnel do not need to perform regular maintenance and cleaning, and maintenance cost of the personnel is reduced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the device of the present invention;
FIG. 2 is a perspective view, partially in section, of the device of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a view showing a cloth beam movement unwinding perspective of the present invention;
FIG. 5 is a side view of the apparatus of the present invention;
FIG. 6 is a sectional view taken in the direction B-B of FIG. 5;
FIG. 7 is a partial enlarged view of the portion C shown in FIG. 6
In the figure: 1. a reactor main body; 11. a reactor coil; 12. a fan; 13. a protective net; 14. an air outlet; 2. a cooling assembly; 21. an operation cylinder; 22. a telescopic rod; 3. an air cylinder; 31. a one-way valve; 32. a first conduit; 33. a second conduit; 4. a support box; 41. an exhaust hole; 42. a first rotating plate; 43. a second rotating plate; 5. an electromagnetic slide rail; 51. a reel; 52. a cloth rolling shaft; 6. chip removal holes.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The embodiment of the invention provides an energy-saving current-limiting device for electric field management of a transformer substation, and solves the technical problems that the existing current-limiting reactor has high heat dissipation cost in the heat dissipation process, the internal temperature of the current-limiting reactor is accelerated to rise when the current-limiting reactor limits short-circuit current, the rapid heat dissipation of the interior of the reactor cannot be carried out, and the like;
in order to solve the technical problems, the technical scheme in the embodiment of the invention has the following general idea: in the cooling process, the telescopic rod 22 moves in a reciprocating manner, and the principle similar to that of an air box is adopted, so that high-temperature gas in the reactor main body 1 is quickly discharged to the outside, the gas flowing speed in the reactor main body 1 is increased, and the reactor coil 11 can be quickly cooled during operation;
in order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1 to 7, an embodiment of the present invention provides a transformer substation electric field governance energy-saving current limiting device, including:
the reactor comprises a reactor main body 1, wherein a reactor coil 11 is fixedly connected in the reactor main body 1;
a fan 12, wherein the fan 12 is fixedly connected to the inner wall of the reactor main body 1;
further comprising:
the temperature reduction component 2 is arranged on the outer wall of the reactor main body 1, and the temperature reduction component 2 is used for enhancing the heat dissipation efficiency of the reactor main body 1;
and a temperature sensor is fixedly connected to the inner wall of the reactor main body 1.
In the embodiment, firstly, the reactor main body 1 is installed in the impedance limiting chamber, a vent is reserved at the root of the impedance limiting chamber, and then the upper end of the reactor main body 1 is communicated with the vent above the impedance limiting chamber; after the installation preparation work of the reactor main body 1 is finished, a person connects the reactor main body 1 and the FSR in parallel on the high-voltage primary side of a power grid, so that the reactor coil 11 is in short circuit, and when the power grid normally works, the reactor coil 11 in the reactor main body 1 does not participate in the work, so that the consumption of the reactor coil 11 on electric energy is reduced, and the energy-saving and current-limiting of the reactor main body 1 is realized; when the power system normally operates, although the reactor coil 11 is short-circuited, a small part of current still passes through the inside, the fan 12 in the reactor main body 1 constantly keeps operating to perform daily heat dissipation on the inside of the reactor main body 1, but when the short circuit occurs in the power system, the temperature inside the reactor coil 11 instantly participates in working, is accelerated to rise, if the temperature inside the resistance limiting chamber is higher in summer, and when the temperature sensor in the reactor main body 1 detects that the temperature is close to a rated bearing value which can be borne by the reactor coil 11, the temperature sensor sends an electric signal to start a component in the temperature reduction component 2, so that the temperature reduction component 2 performs heat dissipation on the inside of the reactor main body 1, and the temperature in the reactor main body 1 is prevented from being rapidly raised to cause burning loss of the reactor coil 11.
As shown in fig. 2 and 6, the cooling module 2 includes:
the operation barrel 21 is fixedly connected to the outer wall of the reactor main body 1 and is positioned above the reactor coil 11;
a plurality of operation barrels 21 are distributed along the circumferential direction of the central axis of the reactor main body 1;
the telescopic rod 22 is fixedly connected to the bottom of the operation barrel 21, and the temperature sensor is electrically connected with the telescopic rod 22;
the support box 4 is positioned above the operation barrel 21, and is fixedly connected with the outer wall of the reactor main body 1;
the outer wall of the supporting box 4 is provided with exhaust holes 41, and the number of the exhaust holes 41 corresponds to the number of the operation cylinders 21 one by one;
a first rotating plate 42 is rotatably connected to the inside of the supporting box 4 and is positioned at one side of the exhaust hole 41;
a second rotating plate 43 is rotatably connected to the opposite surface of the first rotating plate 42;
the first rotating plate 42 and the second rotating plate 43 are limited by the inner wall of the supporting box 4 respectively, so that the rotating directions of the first rotating plate 42 and the second rotating plate 43 are the same.
Wherein, the temperature sensor mainly controls the operation of the telescopic rod 22 in the cooling assembly 2, after the telescopic rod 22 is powered on, firstly, the telescopic rod 22 is contracted, and the end of the telescopic rod 22 is connected with the inner wall of the operation barrel 21 in a sliding and sealing manner, so that a device similar to a piston is formed between the telescopic rod 22 and the operation barrel 21 in a matching manner, thereby the telescopic rod 22 is contracted to drive the end to move, high-temperature gas in the reactor main body 1 is sucked into the operation barrel 21, because when the telescopic rod 22 is contracted, gas in the support box 4 can rapidly flow into the operation barrel 21, the gas content in the support box 4 is reduced, the gas pressure of the inner wall is reduced, and thus the gas pressure at the two sides of the second rotating plate 43 is different, as shown in fig. 7, high-temperature gas in the reactor main body 1 can push the second rotating plate 43 to rotate towards the inner direction of the support box 4, and the high-temperature gas flows towards the place with low internal pressure of the support box 4, then the telescopic rod 22 continues to move to suck high-temperature gas into the operation barrel 21, wherein the operation barrel 21 has enough accommodating space, and because the first rotating plate 42 and the second rotating plate 43 are limited by the inner wall of the support box 4, and the rotating directions of the first rotating plate 42 and the second rotating plate 43 are the same, when the second rotating plate 43 rotates, the first rotating plate 42 can only rotate in the same direction as the second rotating plate 43, but the first rotating plate 42 is limited by the inner wall of the support box 4, so that when the internal gas of the support box 4 is sucked into the operation barrel 21, the first rotating plate 42 cannot rotate, and the telescopic rod 22 can not suck impurities such as external air and dust into the support box 4 when contracting;
then the telescopic rod 22 is reset to push the high-temperature gas in the operation barrel 21 to flow into the support box 4, because the direction of the rotation of the first rotating plate 42 towards the direction of the exhaust hole 41 is not limited by the inner wall of the support box 4, the high-temperature gas pushes the first rotating plate 42 to rotate towards the exhaust hole 41, so that the high-temperature gas is exhausted to the outside, meanwhile, the pressure of the high-temperature gas pushes the second rotating plate 43 to be attached to the inner wall of the support box 4, and because of the limitation of the inner wall of the support box 4, the second rotating plate 43 cannot rotate, so that the high-temperature gas cannot flow back into the reactor main body 1; the telescopic rod 22 reciprocates in the cooling process, and the principle similar to an air box is adopted, so that high-temperature gas in the reactor main body 1 is quickly pumped out to the outside, the gas flowing speed in the reactor main body 1 is increased, the gas in the reactor main body 1 can be quickly exchanged with outside cold air, and the reactor coil 11 can be quickly cooled when short-circuit current is limited; sliding friction is formed between the upper end of the telescopic rod 22 and the inner wall of the operation barrel 21, friction resistance is small in the reciprocating movement process of the telescopic rod 22, so that heat generated by friction is small, and when a short circuit occurs in an electric power system, the maintaining time of short-circuit current does not last for a long time, so that the telescopic rod 22 does not move back and forth for a long time, the sliding friction duration time between the end of the telescopic rod 22 and the barrel wall of the operation barrel 21 is not long, and therefore large heat cannot be generated to cause the temperature of the barrel wall of the operation barrel 21 to rise, and normal heat dissipation of the reactor main body 1 is influenced;
a plurality of operation cylinders 21 are circumferentially distributed along the central axis of the reactor main body 1, and the temperature sensors can select the starting number of the telescopic rods 22 according to the actual temperature in the reactor main body 1, so that all the telescopic rods 22 are not required to be started when the reactor coil limits the short-circuit current, and the electric energy consumption is reduced; meanwhile, the outer wall of the support box 4 is provided with the exhaust holes 41, the number of the exhaust holes 41 corresponds to the number of the operation cylinders 21 one by one, so that the telescopic rod 22 can push high-temperature gas to be rapidly exhausted from the exhaust holes 41, the detention time of the high-temperature gas in the support box 4 is reduced, and the cooling effect of the reactor main body 1 is improved; meanwhile, in the normal exhaust process of the reciprocating movement of the telescopic rod 22, because the first rotating plate 42 is pushed by the gas to rotate towards the exhaust hole 41, the high-temperature gas absorbed in the operation cylinder 21 is not compressed and is quickly exhausted through the exhaust hole 41, so that the problem that the temperature inside the operation cylinder 21 is quickly increased due to the compression of the high-temperature gas is solved;
the reciprocating movement of the telescopic rod 22 in the temperature reduction component 2 promotes the air flow in the reactor main body 1, so that the external low-temperature air can quickly enter the inside of the reactor main body 1, thereby realizing the rapid temperature rise when the reactor coil 11 works, the cooling component 2 can be matched with the fan 12 to radiate the heat inside the reactor main body 1, preventing the reactor coil 11 from burning, and does not need to add new ventilation equipment or other related equipment on the impedance-limiting chamber, but directly radiates the heat of the heating source in the reactor main body 1, has higher radiation efficiency compared with the ventilation equipment on the impedance-limiting chamber, can improve the radiation effect of the reactor coil 11, does not need to embed a ventilation pipe in advance, reduces the later maintenance cost of personnel, therefore, the heat dissipation cost of the whole current-limiting reactor is reduced, and the energy-saving current-limiting reactor can stably run;
when the cooling assembly 2 does not work, the first rotating plate 42 keeps a vertical state under the action of gravity, and can prevent external impurities such as dust from entering the inside of the reactor main body 1 through the exhaust holes 41, so that the cleanliness of the inside of the reactor main body 1 can be kept.
As shown in fig. 2, the reactor body 1 is vertically penetrated, and the fans 12 are respectively located at the upper and lower sides of the reactor coil 11;
the upper end and the lower end of the reactor main body 1 are fixedly connected with a protective net 13 respectively, and the protective net 13 is used for preventing external impurities from entering the reactor main body 1.
Furthermore, the inside of the reactor main body 1 is in a vertically through state, so that when the telescopic rod 22 reciprocates to absorb high-temperature gas in the reactor main body 1, a ventilation opening is reserved at the wall root of the resistance limiting chamber, external cold air can be absorbed into the reactor main body 1 from the bottom of the reactor main body 1, the reactor coil 11 is cooled by the cold air, the external air temperature is lower relative to the high-temperature gas in the reactor main body 1, the upper end and the lower end of the reactor main body 1 are fixedly connected with the protective nets 13, large-particle impurities in the outside can be blocked, and when personnel overhaul, clothes or operating equipment are prevented from falling into the reactor main body 1, and the fan 12 is prevented from being damaged;
meanwhile, the fans 12 are respectively positioned on the upper side and the lower side of the reactor coil 11, the fan 12 on the lower side blows air to the inside of the reactor main body 1, and the fan 12 on the upper side exhausts air to the outside of the reactor main body 1, so that when the power system works normally, the reactor coil 11 does not participate in working, air flowing in the reactor main body 1 can be promoted, the reactor coil 11 can be guaranteed to perform daily heat dissipation, the influence of high-temperature weather appearing outside in summer on the reactor coil 11 is eliminated, and the service lives of other components such as the reactor coil 11 are prolonged.
As shown in fig. 2, an air cylinder 3 is arranged on one side of the operation cylinder 21, and the air cylinder 3 is fixedly connected with the outer wall of the reactor main body 1;
a one-way valve 31 is fixedly connected between the air storage cylinder 3 and the operation cylinder 21, and the one-way valve 31 is respectively communicated with the air storage cylinder 3 and the operation cylinder 21;
the flow direction of the check valve 31 is from the operation cylinder 21 to the air storage cylinder 3;
an air pressure sensor and an electromagnetic valve are fixedly arranged in the air storage cylinder 3;
the upper end of the air storage cylinder 3 is fixedly connected with a first guide pipe 32, and the first guide pipe 32 is communicated with the air storage cylinder 3;
a second conduit 33 is fixedly connected to the outside of the first conduit 32, and the second conduit 33 is communicated with the first conduit 32;
the solenoid valve is located inside the first conduit 32;
as shown in fig. 3, air outlet holes 14 are formed in the inner walls of the reactor main body 1 above and below the reactor main body;
the first duct 32 and the second duct 33 are in communication with the air outlet 14.
In this embodiment, when the telescopic rod 22 in the cooling module 2 reciprocates to cool the inside of the reactor main body 1, and when the telescopic rod 22 reciprocates to push high-temperature gas to the outside, part of the gas enters the gas storage cylinder 3 through the check valve 31 to be stored, because the flow direction of the check valve 31 is from the operation cylinder 21 to the gas storage cylinder 3, the gas in the gas storage cylinder 3 cannot flow back to the operation cylinder 21, and when short-circuit current is limited along with the irregular operation of the reactor coil 2, part of the gas in the operation cylinder 2 flows into the gas storage cylinder 3, so that the gas in the gas storage cylinder 3 is gradually increased;
when the air pressure sensor in the air reservoir 3 detects that the air pressure reaches a rated value borne by the air reservoir 3, the air pressure sensor controls the electromagnetic valve to be started through an electric signal, so that a delay switch in the electromagnetic valve is opened, the air in the air reservoir 3 enters the first conduit 32 and the second conduit 33, and is discharged through the air outlet 14 and blown to the protective net 13, so that impurities such as dust on the protective net 13 are separated from the protective net 13 due to the blowing force of the air, and the cleanness of the protective net 13 is guaranteed;
wherein protection network 13 exposes in the outside of reactor main part 1 for a long time, blocks that outside impurity from entering into the inside of reactor main part 1, can accumulate a large amount of dusts and other impurity on the accumulation protection network 13 along with time, if not regularly clear up, then can influence the outside air and enter into the inside flow efficiency of reactor main part 1 for radiating effect in the reactor main part 1 descends.
As shown in fig. 3-4, an electromagnetic slide rail 5 is fixedly connected above the support box 4 and on the inner wall of the reactor main body 1;
a winding drum 51 is fixedly connected in the electromagnetic slide rail 5, and a cloth winding shaft 52 is arranged on the outer side of the winding drum 51;
the cloth rolling shaft 52 is connected with the electromagnetic slide rail 5 in a sliding manner;
a plurality of chip removal holes 6 are formed in one side of the winding drum 51 and on the inner wall of the reactor main body 1.
Further, when the air pressure sensor is started by the electromagnetic valve controlled by an electric signal, the electromagnetic slide rail 5 is started by the electric signal, so that the driving module in the electromagnetic slide rail 5 drives the cloth winding shaft 52 to slide for a circle along the track of the electromagnetic slide rail 5, as shown in fig. 4, so that the cloth winding shaft 52 pulls the cloth winding of the winding drum 51 to expand to form a cone, wherein the electromagnetic slide rail 5 can select a huiside GMP annular guide rail in the existing product, when the protective net 13 is cleaned by the gas discharged from the air outlet 14 above the reactor main body 1, the impurities such as dust on the protective net 13 fall onto the cloth winding expanded in the winding drum 51 under the action of gravity, and because the cloth winding is cone-shaped, the impurities such as dust that fall can slide along the outer surface of the cloth winding and then are discharged to the outside of the reactor main body 1 from the scrap discharge hole 6; impurities such as dust on the protective net 13 below the reactor body 1 can fall to the ground under the action of gravity without being blocked by the cloth in the winding drum 51; and the protective net 13 is automatically cleaned regularly, so that personnel do not need to maintain and clean regularly, and the maintenance cost of the personnel is reduced.
The cloth winding shaft 52 pulls out and unfolds the cloth winding in the winding drum 51, so that the situation that other impurities such as a large amount of dust on the surface fall on the fan 12 when the protective net 13 above the reactor main body 1 is cleaned, the air exhaust effect of the fan 12 is reduced, the flowing speed of air inside the reactor main body 1 is reduced, and the quick heat dissipation inside the reactor main body 1 is influenced can be effectively prevented.
The specific working process is as follows:
firstly, the telescopic rod 22 is contracted, and the end part of the telescopic rod 22 is connected with the inner wall of the operation barrel 21 in a sliding and sealing manner, so that a device similar to a piston is formed between the telescopic rod 22 and the operation barrel 21 in a matching manner, and thus the telescopic rod 22 is contracted to drive the end part to move, high-temperature gas in the reactor main body 1 is sucked into the operation barrel 21, because when the telescopic rod 22 is contracted, gas inside the support box 4 is reduced to reduce pressure, and thus the pressure intensity of the gas on two sides of the second rotating plate 43 is reduced, as shown in fig. 7, the high-temperature gas in the reactor main body 1 can push the second rotating plate 43 to rotate towards the inside direction of the support box 4, so that the high-temperature gas is sucked into the operation barrel 21, because the first rotating plate 42 and the second rotating plate 43 are limited by the inner wall of the support box 4, and the rotating directions of the first rotating plate 42 and the second rotating plate 43 are the same, when the second rotating plate 43 rotates, the first rotating plate 42 can only rotate 3 in the same direction, so that when the internal pressure of the supporting box 4 is reduced, the first rotating plate 42 is limited by the inner wall of the supporting box 4, and cannot rotate, and outside air cannot enter the supporting box 4; the rear telescopic rod 22 resets to push the high-temperature gas in the operation barrel 21 to flow into the support box 4, so that the high-temperature gas pushes the first rotating plate 42 to rotate towards the exhaust hole 41, the high-temperature gas is exhausted to the outside, meanwhile, the pressure of the high-temperature gas pushes the second rotating plate 43 to be attached to the inner wall of the support box 4, and the second rotating plate 43 cannot rotate due to the limit of the inner wall of the support box 4, so that the high-temperature gas cannot flow back to the inside of the reactor main body 1; in the cooling process, the telescopic rod 22 reciprocates, and similar to the principle of an air box, high-temperature gas in the reactor main body 1 is quickly discharged to the outside, so that the gas flowing speed inside the reactor main body 1 is increased, and the reactor coil 11 can be quickly cooled during operation.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the 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 scope of the present invention.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an energy-conserving current limiting device of transformer substation's electric field improvement, includes:
the reactor comprises a reactor main body (1), wherein a reactor coil (11) is fixedly connected in the reactor main body (1);
the fan (12), the fan (12) is fixedly connected to the inner wall of the reactor main body (1);
it is characterized by also comprising:
the temperature reduction component (2), the temperature reduction component (2) is arranged on the outer wall of the reactor main body (1), and the temperature reduction component (2) is used for enhancing the heat dissipation efficiency of the reactor main body (1);
the inner wall of the reactor main body (1) is fixedly connected with a temperature sensor;
the cooling assembly (2) comprises:
the operation barrel (21) is fixedly connected to the outer wall of the reactor main body (1) and is positioned above the reactor coil (11);
the operating barrels (21) are distributed along the circumferential direction of the central axis of the reactor main body (1);
the telescopic rod (22), the telescopic rod (22) is fixedly connected to the bottom of the operation barrel (21), and the temperature sensor is electrically connected with the telescopic rod (22);
the supporting box (4) is positioned above the operating barrel (21) and fixedly connected with the outer wall of the reactor main body (1);
the outer wall of the supporting box (4) is provided with exhaust holes (41), and the number of the exhaust holes (41) corresponds to the number of the operation cylinders (21) one by one;
a first rotating plate (42) is rotatably connected to one side of the exhaust hole (41) in the supporting box (4);
a second rotating plate (43) is rotatably connected to the opposite surface of the first rotating plate (42);
the first rotating plate (42) and the second rotating plate (43) are limited by the inner wall of the supporting box (4) respectively, so that the rotating directions of the first rotating plate (42) and the second rotating plate (43) are the same.
2. The energy-saving current-limiting device for electric field treatment of transformer substation of claim 1, characterized in that: the inside of the reactor main body (1) is in a vertical through state, and the fans (12) are respectively positioned on the upper side and the lower side of the reactor coil (11);
the upper end and the lower end of the reactor main body (1) are fixedly connected with a protective net (13) respectively, and the protective net (13) is used for preventing external impurities from entering the reactor main body (1).
3. The energy-saving current-limiting device for electric field treatment of transformer substation of claim 1, characterized in that: an air storage cylinder (3) is arranged on one side of the operation cylinder (21), and the air storage cylinder (3) is fixedly connected with the outer wall of the reactor main body (1).
4. The transformer substation electric field treatment energy-saving current-limiting device according to claim 3, characterized in that: a one-way valve (31) is fixedly connected between the air storage cylinder (3) and the operation cylinder (21), and the one-way valve (31) is respectively communicated with the air storage cylinder (3) and the operation cylinder (21);
the flow direction of the one-way valve (31) is from the operation cylinder (21) to the air storage cylinder (3).
5. The transformer substation electric field treatment energy-saving current-limiting device according to claim 3, characterized in that: an air pressure sensor and an electromagnetic valve are fixedly arranged in the air storage cylinder (3);
the upper end of the air storage cylinder (3) is fixedly connected with a first guide pipe (32), and the first guide pipe (32) is communicated with the air storage cylinder (3);
a second conduit (33) is fixedly connected to the outside of the first conduit (32), and the second conduit (33) is communicated with the first conduit (32);
the solenoid valve is located at the junction of the first conduit (32) and the second conduit (33).
6. The transformer substation electric field treatment energy-saving current-limiting device according to claim 5, characterized in that: air outlet holes (14) are formed in the upper inner wall and the lower inner wall of the reactor main body (1);
the first duct (32) and the second duct (33) are communicated with the air outlet hole (14).
7. The energy-saving current-limiting device for electric field treatment of transformer substation of claim 1, characterized in that: an electromagnetic slide rail (5) is fixedly connected above the supporting box (4) and on the inner wall of the reactor main body (1);
a winding drum (51) is fixedly connected in the electromagnetic slide rail (5), and a cloth winding shaft (52) is arranged on the outer side of the winding drum (51);
the cloth rolling shaft (52) is connected with the electromagnetic slide rail (5) in a sliding way.
8. The transformer substation electric field treatment energy-saving current-limiting device according to claim 7, characterized in that: a plurality of chip removal holes (6) are formed in one side of the winding drum (51) and located on the inner wall of the reactor main body (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210165001.6A CN114496484B (en) | 2022-02-22 | 2022-02-22 | Energy-saving current limiting device for electric field treatment of transformer substation |
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| CN202210165001.6A CN114496484B (en) | 2022-02-22 | 2022-02-22 | Energy-saving current limiting device for electric field treatment of transformer substation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214797028U (en) * | 2021-06-02 | 2021-11-19 | 江苏鸿康电器有限公司 | Immediately, around coil-type reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1007569A (en) * | 1962-05-29 | 1965-10-13 | Anthony Barclay Trench | Current limiting reactor |
| CN214479595U (en) * | 2021-02-22 | 2021-10-22 | 云南驰宏资源综合利用有限公司 | Constant-temperature depth current limiting device |
| CN113012895A (en) * | 2021-02-24 | 2021-06-22 | 武汉创蒲电子有限公司 | Novel reactor |
| CN215118565U (en) * | 2021-07-21 | 2021-12-10 | 上海波亮电器制造有限公司 | Heat radiator for air-core reactor |
| CN113903569A (en) * | 2021-09-22 | 2022-01-07 | 盐城市雷击环保科技有限公司 | Zero-loss deep current-limiting reactor complete device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN214797028U (en) * | 2021-06-02 | 2021-11-19 | 江苏鸿康电器有限公司 | Immediately, around coil-type reactor |
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