CN112582146A

CN112582146A - Capacitor voltage transformer for electric power construction

Info

Publication number: CN112582146A
Application number: CN202011546812.8A
Authority: CN
Inventors: 蔡连玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-03-30

Abstract

The invention discloses a capacitive voltage transformer for electric power construction, which structurally comprises an expander outer cover, a capacitive voltage divider, a connecting end cover, a terminal box, support legs and a box body, wherein the expander outer cover is arranged on the capacitive voltage divider, the capacitive voltage divider is arranged on the connecting end cover, the connecting end cover is welded with the box body, the terminal box is arranged on the box body, and the support legs are mechanically connected to the bottom of the box body.

Description

Capacitor voltage transformer for electric power construction

Technical Field

The invention relates to the technical field of electric power, in particular to a capacitor voltage transformer for electric power construction.

Background

The capacitive voltage transformer is a voltage transformer which is divided by series capacitors, then is subjected to voltage reduction and isolation by an electromagnetic transformer and is used as a meter, relay protection and the like, the capacitive voltage transformer mainly comprises a capacitive voltage divider and a medium voltage transformer, the capacitive voltage divider comprises a porcelain bushing and a plurality of series capacitors arranged in the porcelain bushing, insulating oil which keeps positive pressure of 0.1MPa is filled in the porcelain bushing, and uses steel corrugated pipe to balance different environment to maintain oil pressure, the capacitive voltage divider can be used as coupling capacitor to connect with carrier device capacitive voltage transformer, and can also be used for coupling carrier frequency to power transmission line for long distance communication, remote measurement, selective high-frequency line protection, remote control, teletype and the like, therefore, compared with the conventional electromagnetic voltage transformer, the capacitor voltage transformer can prevent ferromagnetic resonance caused by saturation of the iron core of the voltage transformer.

The sealing performance of the capacitor voltage transformer is easily reduced due to fatigue of a sealing gasket in the use process, so that the water content of oil in an oil tank is high, water is in a lower layer due to the fact that the water is higher than the density of the oil, the water and the oil form an emulsification phenomenon, the oil is white, flocculent precipitates are oil sludge, the capacitor voltage transformer can generate oil sludge in use, due to the fact that the solubility of the oil sludge in new oil and aging oil is different, when the new oil permeates into the aging oil, the oil sludge can precipitate out, the heat dissipation performance of equipment can be affected due to the deposition of the oil sludge, meanwhile, serious corrosion is caused to solid insulating materials and metals, therefore, when the new oil is added into the oil tank, the aging oil and the oil sludge in the oil tank are required to be completely extracted, and due to the fact that the oil sludge is precipitated in the oil tank for a long time, the angular orientation of some components in the tank body is required to, the components can be extracted completely, but the shapes of the components are different, so that not only is time wasted, but also the limitation of the orifice of the extraction pipe on the extraction of the area of some dead angles is more difficult.

Disclosure of Invention

The invention aims to provide a capacitor voltage transformer for electric power construction, which is used for solving the technical problems that due to the fact that oil sludge is deposited in an oil tank for a long time, when oil sludge is extracted, the residual oil sludge at the edge of some components in the tank body can be extracted completely by adjusting the angle and the direction of an extraction pipe all the time, the extraction effect can be guaranteed, and the components are extracted completely, but the shapes of the components are different, so that not only is time wasted, but also the limitation of the pipe opening of the extraction pipe on the extraction of some dead-angle areas is more difficult.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an electric power construction's capacitive voltage transformer, its structure includes expander dustcoat, capacitive voltage divider, connection end cover, terminal case, stabilizer blade, box, be equipped with the expander dustcoat on the capacitive voltage divider, capacitive voltage divider installs on the connection end cover, the connection end cover is in the same place with the box welding, the terminal case is installed to the box, stabilizer blade mechanical connection is in the bottom half.

Preferably, the box body is provided with an oil changing port, a damper, an inner cavity of the box, a compensation reactor, an intermediate transformer, a mud scraper and a telescopic cylinder, the oil changing port is arranged on one side of the box body opposite to the terminal box, the mud scraper is arranged at the upper end of the inner cavity of the box and is connected with the telescopic cylinder, the mud scraper is vertically translated in the inner cavity of the box through the telescopic cylinder, and the damper, the compensation reactor and the intermediate transformer are arranged in the inner cavity of the box.

Preferably, the mud scraper comprises a fixed scraper, a telescopic air rod, a connecting pipe, a connecting port, a suction pump, a telescopic pipe, a fixed seat and adsorption ports, wherein the suction pump is connected with the telescopic pipe, the telescopic pipe is provided with two telescopic pipes, the telescopic pipe is provided with more than two adsorption ports, one end of the telescopic pipe, opposite to the adsorption ports, is connected with the fixed seat, the fixed seat is connected with the telescopic air rod, one end of the telescopic pipe, opposite to the suction pump, is mechanically connected with the fixed scraper through the connecting port, and the fixed scraper is connected with the connecting pipe.

Preferably, the fixed scraper comprises a concentration cavity, positioning pieces, a fastening body, two through holes, a folding cover, an air bag and a base, the base is arranged on the concentration cavity, the positioning pieces and the fastening body are mounted on the base, the through holes are formed between the two positioning pieces and communicated with the interior of the concentration cavity, the folding cover covers the through holes and is connected with the fastening body, and the air bag is arranged on the fastening body.

Preferably, the fastening body comprises a communicating pipe, a stretching pipe and a fixing edge, the stretching pipe is communicated with the air bag through the communicating pipe, and the fixing edge is fixed with the positioning piece.

Preferably, one end of the fixed scraper relative to the telescopic pipe is in contact fit with the inner surface wall of the inner cavity of the box.

Preferably, an extraction pipe is embedded in the oil change port and is communicated with the through hole close to one side of the oil change port.

Preferably, the concentration cavity is connected with the telescopic pipe through a connecting port.

Preferably, the fastening body is pressed in a ring-like manner around the outer surface of the extraction duct during the horizontal movement of the fixed scraper.

Preferably, when the fastening body is contacted with the extraction pipe, the extraction pipe continuously extrudes the air bag, so that the air in the air bag is continuously sent into the stretching pipe, the stretching pipe extends upwards, and the extraction pipe and the port are sleeved by the stretching pipe, so that oil sludge in extraction is prevented from leaking.

Compared with the prior art, the invention has the following beneficial effects:

1. the mud scraper provided by the invention has the advantages that the telescopic pipe and the adsorption port are matched with the suction pump, the oil sludge at the bottom of the inner cavity of the box is sucked out through the adsorption port and finally concentrated in the fixed scraper positioned on one side of the oil change port through the connecting pipe, the flexibility of the telescopic pipe can be matched with the shape change of components in the inner cavity of the box, the oil sludge extraction efficiency is improved, and dead corners or regions difficult to clean can be well treated.

2. According to the invention, the through hole arranged on the fixed scraper and the fastening body are matched with the extraction pipe, wherein the stretching pipe arranged in the fastening body is connected with the extraction pipe and the through hole and communicated with each other, and when the extraction pipe extracts the oil sludge collected in the concentration cavity, the stretching pipe can well prevent the oil sludge from leaking from a gap between the through hole and the extraction pipe in the extraction process.

3. The folding cover is matched with the fastening body and the through hole, the folding cover completely covers the through hole when not being extruded by external force, the sealing performance of the through hole is improved, when the fastening body is extruded by the extraction pipe, the folding cover is slowly opened, so that the through hole is communicated with the extraction pipe, and oil sludge collected in the concentration cavity is effectively protected from accidental leakage.

Drawings

Fig. 1 is a schematic structural diagram of a capacitor voltage transformer for electric power construction according to the present invention.

Fig. 2 is a schematic view of the internal structure of the case of the present invention.

Fig. 3 is a schematic structural diagram of the mud scraper of the present invention.

FIG. 4 is a schematic view of a bent telescopic tube according to the present invention.

Fig. 5 is a schematic structural view of the fixed scraper of the present invention.

FIG. 6 is a schematic view of the engagement between the fixed scraper and the extraction tube according to the present invention.

FIG. 7 is a schematic view of the structure of the fastener of the present invention.

In the figure: the device comprises an expander outer cover 1, a capacitive voltage divider 2, a connecting end cover 3, a terminal box 4, a support leg 5, a box body 6, an oil changing port 61, a damper 62, a box inner cavity 63, a compensation reactor 64, an intermediate transformer 65, a mud scraper 66, a telescopic cylinder 67, a fixed scraper 661, a telescopic air rod 662, a connecting pipe 663, a connecting port 664, a suction pump 665, a telescopic pipe 666, a fixed seat 667, an adsorption port 668, a concentration cavity 61a, a positioning sheet 61b, a fastening body 61c, a through port 61d, a folding cover 61e, an air bag 61f, a base 61g, a communication pipe 1c1, a stretching pipe 1c2, a fixed edge 1c3 and an extraction pipe a.

Detailed Description

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on or indirectly connected to the other element, and when an element is referred to as being "connected to" the other element, it can be directly connected to or indirectly connected to the other element.

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.

Example 1

As shown in fig. 1-7, the invention provides a capacitive voltage transformer for electric power construction, which structurally comprises an expander outer cover 1, a capacitive voltage divider 2, a connecting end cover 3, a terminal box 4, support legs 5 and a box body 6, wherein the expander outer cover 1 is arranged on the capacitive voltage divider 2, the capacitive voltage divider 2 is installed on the connecting end cover 3, the connecting end cover 3 is welded with the box body 6, the terminal box 4 is installed on the box body 6, the support legs 5 are mechanically connected to the bottom of the box body 6, the box body 6 is provided with an oil changing port 61, a damper 62, a box inner cavity 63, a compensating reactor 64, an intermediate transformer 65, a mud scraper 66 and a telescopic cylinder 67, the oil changing port 61 is arranged on one side of the box body 6 opposite to the terminal box 4, the mud scraper 66 is installed at the upper end of the box inner cavity 63, the mud scraper 66 is connected with the telescopic cylinder 67, the mud scraper 66 is vertically translated in the box inner, damper 62, compensation reactor 64 and middle transformer 65 are installed to case inner chamber 63, mud scraper 66 comprises fixed scraper 661, flexible gas pole 662, connecting pipe 663, links mouth 664, suction pump 665, flexible pipe 666, fixing base 667, absorption mouth 668, suction pump 665 and flexible pipe 666 are connected, flexible pipe 666 is equipped with two, be equipped with more than two absorption mouths 668 on the flexible pipe 666, flexible pipe 666 is connected with fixing base 667 for the one end of absorption mouth 668, fixing base 667 is connected with flexible gas pole 662, flexible pipe 666 is passed through linking mouth 664 and fixed scraper 661 mechanical connection for the one end of suction pump 665, fixed scraper 661 is connected with connecting pipe 663, fixed scraper 661 is including concentrated chamber 61a, locating piece 61b, the fastener 61c, port 61d, folding cover 61e, gasbag 61f, base 61g, be equipped with base 61g on concentrated chamber 61a, install spacer 61b and the fastening body 61c on the base 61g, spacer 61b is equipped with two, two be equipped with opening 61d between spacer 61b, this opening 61d communicates with each other with concentrated chamber 61a is inside, it has folding cover 61e to cover on the opening 61d, folding cover 61e is connected with fastening body 61c, be equipped with gasbag 61f on the fastening body 61c, fastening body 61c includes communicating pipe 1c1, tensile pipe 1c2, fixed limit 1c3, tensile pipe 1c2 communicates with each other with gasbag opening 61f through communicating pipe 1c1, fixed limit 1c3 is together fixed with spacer 61b, the one end of the relative flexible pipe 666 of fixed scraper cooperates with the interior table wall contact of case inner chamber 63, the extraction pipe a has been rabbeted in the oil changing mouth 61, extraction pipe a is linked together with the 61d that is close to the oil changing mouth 61 one side, the centralized cavity 61a is connected with the extension tube 666 through the connecting port 664, the fastening body 61c is extruded to be annularly wrapped on the outer surface of the extraction tube a in the horizontal movement of the fixed scraper 661, when the fastening body 61c is in contact with the extraction tube a, the air bag 61f is continuously extruded through the extraction tube a, so that the air in the air bag 61f is continuously sent into the stretching tube 1c2, the stretching tube 1c2 extends upwards, the extraction tube a and the through port 61d are sleeved by the stretching tube 1c2, and the oil sludge leakage in the extraction is prevented.

The following describes in detail the implementation of the capacitive voltage transformer for power construction provided by the present invention:

when new oil is added, the purity of the new oil in the box body 6 is ensured to be ensured, so that the inside of the box body 6 needs to be further cleaned before the new oil is added, in the cleaning process, in order to improve the cleaning efficiency and the cleaning degree, a mud scraper 66 is arranged in the box body 6, wherein the mud scraper 66 is matched with a telescopic cylinder 67, the telescopic cylinder 67 is started to drive the mud scraper 66 to move along the upper right part and the lower right part of the box body 6 until the mud scraper 66 falls at the bottom of the box body 6, then a telescopic air rod 662 and a suction pump 665 are started, the telescopic air rod 662 drives a telescopic pipe 666 and the suction pump 665 to horizontally move along the bottom of the box body 6, in the moving process, a plurality of adsorption ports 668 arranged on the telescopic pipe 666 suck out the oil sludge deposited at the bottom layer through the telescopic pipe 666, the oil sludge is discharged into the concentration cavity 61a for collection through the connecting pipe 663, when the telescopic pipe 666 is in contact with components (a compensating reactor 64 and an intermediate transformer 65) in the box inner cavity 63 in the moving process, the telescopic pipe 666 has the elasticity, the telescopic pipe 666 is matched with the shapes of the components to deform in the moving process, as shown in fig. 4, if the telescopic pipe 666 touches the circular components, the telescopic pipe 666 is in the annular structure as shown in fig. 4, the adsorption port 668 is just matched with the edge of the components, so that the oil sludge remained in the components is better sucked out, the oil sludge remained on the edge of the components can be better separated without adjusting the angle of the extraction pipe a, the arrangement of a plurality of adsorption ports 338 is cut, the oil sludge extraction efficiency is further improved, when the oil sludge is collected into the concentration cavity 61a, when the fixed scraper 661 moves synchronously along with the telescopic pipe 666, the angle is fixed when the oil extraction pipe a is embedded into the oil changing, is vertically downward, the extraction tube a is located at one side of the fixed scraper 661, but the outer surface of the extraction tube a contacts the fastening body 61c, the whole fastening body 61c is bent by the extraction tube a, and the fastening body 61c presses the folding cover 61e to open the through port 61d as the fastening body 61c is continuously depressed in a semicircular shape inward, in the process, the extraction tube a also synchronously presses the air bag 61f, so that the gas in the air bag 61f is continuously infused into the stretching tube 1c2 through the communication tube 1c1, but when the stretching tube 1c2 is filled with gas, the stretching tube 1c2 continuously extends upward from the initial dry state until the stretching tube 1c2 is tightly attached to the extraction tube a, because the extraction tube a is pushed by the fixed scraper 661, the angle thereof is inclined, and a certain gap is formed between the extraction tube a and the through port 61d, so that the stretching tube 1c2 with upward extending function is attached between the extraction tube a and the through port 61d, the clearance between closed opening 61d and the extraction pipe a guarantees that can not accidentally reveal when extraction pipe a extracts the inside fatlute of concentrated chamber 61a, and the deformation that fastening body 61c cooperation extraction pipe a produced also makes the more comprehensive laminating of tensile pipe 1c2 on the extraction pipe surface, realizes the fatlute centralized processing with the inside of box 6, need not adjust extraction pipe a's angle always, saves the extraction time greatly.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a capacitive voltage transformer of electric power construction which characterized in that: its structure includes expander dustcoat (1), capacitive voltage divider (2), connection end cover (3), terminal case (4), stabilizer blade (5), box (6), be equipped with expander dustcoat (1) on capacitive voltage divider (2), install on connection end cover (3) capacitive voltage divider (2), connection end cover (3) and box (6) welding are in the same place, terminal case (4) are installed in box (6), stabilizer blade (5) mechanical connection is in box (6) bottom.

2. The capacitive voltage transformer for power construction according to claim 1, wherein: the box (6) is provided with and trades hydraulic fluid port (61), attenuator (62), case inner chamber (63), compensation reactor (64), intermediate transformer (65), scrapes mud ware (66), telescopic cylinder (67), trade hydraulic fluid port (61) and establish the one side in box (6) relative terminal case (4), scrape the upper end at case inner chamber (63) in mud ware (66), it is connected with telescopic cylinder (67) to scrape mud ware (66), it translates in case inner chamber (63) from top to bottom to scrape mud ware (66) through telescopic cylinder (67), attenuator (62), compensation reactor (64) and intermediate transformer (65) are installed to case inner chamber (63).

3. The capacitive voltage transformer for power construction according to claim 2, wherein: mud scraper (66) comprises fixed scraper (661), flexible gas pole (662), company pipe (663), links interface (664), suction pump (665), flexible pipe (666), fixing base (667), absorption mouth (668), suction pump (665) is connected with flexible pipe (666), flexible pipe (666) is equipped with two, be equipped with absorption mouth (668) more than two on flexible pipe (666), flexible pipe (666) are connected with fixing base (667) for the one end of absorption mouth (668), fixing base (667) are connected with flexible gas pole (662), flexible pipe (666) are passed through for the one end of suction pump (665) and are linked with fixed scraper (661) mechanical connection, fixed scraper (661) are connected with company pipe (663).

4. The capacitive voltage transformer for power construction according to claim 3, wherein: fixed scraper (661) is including concentrating chamber (61a), spacer (61b), the solid (61c), opening (61d), folding cover (61e), gasbag (61f), base (61g), be equipped with base (61g) on concentrating chamber (61a), install spacer (61b) and solid (61c) on base (61g), spacer (61b) is equipped with two, two be equipped with opening (61d) between spacer (61b), this opening (61d) communicates with each other with concentrating chamber (61a) is inside, opening (61d) coats and is stamped folding cover (61e), folding cover (61e) are connected with solid (61c), be equipped with gasbag (61f) on solid (61 c).

5. The capacitive voltage transformer for power construction according to claim 4, wherein: the fastening body (61c) comprises a communication pipe (1c1), a stretching pipe (1c2) and a fixing edge (1c3), wherein the stretching pipe (1c2) is communicated with the air bag (61f) through the communication pipe (1c1), and the fixing edge (1c3) is fixed with the positioning piece (61 b).

6. The capacitive voltage transformer for power construction according to claim 3, wherein: one end of the fixed scraping piece (661) opposite to the telescopic pipe (666) is in contact fit with the inner surface wall of the box inner cavity (63).

7. The capacitive voltage transformer for power construction according to claim 2, wherein: an extraction pipe (a) is embedded in the oil changing port (61) and communicated with a through hole (61d) close to one side of the oil changing port (61).