Low-voltage series reactor

Abstract

The application relates to the technical field of electric reactors, and discloses a low-voltage series electric reactor, which is used to solve the problems of iron core shaking caused by vibration during operation and screw bolt loosening of a fixed iron yoke, a reaction tank is arranged in an insulating plate, a partition plate and an expansion film are arranged in the reaction tank, elastic sealing strips are arranged between the partition plates, two kinds of substances are arranged on the two sides of the partition plates, after installation, the partition plates are separated through the elastic sealing strips, the two kinds of substances react to produce gas, the gas makes the expansion film expand to fix the iron core and prevent the iron core from moving up and down; power blocks are arranged on supporting rods in the installation groove, a moving groove is arranged on a connecting plate, a limiting block is arranged in the moving groove, and inclined limiting grooves are arranged at the two ends of stud bolts; after high-pressure gas is generated in the reaction tank, the high-pressure gas pushes the partition plates, the supporting rods and the power blocks to move, the power blocks push the limiting block into the inclined limiting grooves, and even if the nuts and the stud bolts are loosened, the fixing of the iron yoke and the connecting plate by the limiting block will not be changed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric reactors, in particular to a low-voltage series electric reactor. BACKGROUND

[0002] The electric reactor is also called an inductor, and is widely applied in circuits. Because of the electromagnetic induction effect, the electric reactor has certain inductance and can play a role in resisting current change. Electric reactance is divided into inductive reactance and capacitive reactance. The more scientific classification is inductor (inductor) and capacitor (capacitor), which are collectively referred to as electric reactors. However, because the inductor was developed first in the past and was called the electric reactor, the capacitor is now referred to as the capacitive reactor, and the electric reactor specifically refers to the inductor.

[0003] Because the iron core of the electric reactor is placed in the space reserved in the coil frame, when the coil is electrified and changes rapidly, a changing magnetic field is generated. At this time, the iron core of the electric reactor will move up and down in the space reserved in the coil frame, thereby rubbing against the coil frame, causing damage to the coil frame, or the iron core collides to cause a certain deformation on the surface, affecting the uniformity of the magnetic conduction of the iron core. In addition, during use, the electric reactor will be subjected to severe electrical stress, thermal stress and mechanical stress during operation, and it is difficult to avoid the aging of the electric reactor and the loosening of the bolts, thereby causing the loosening of the upper and lower yokes and generating a large noise. SUMMARY

[0004] The application provides a low-voltage series electric reactor, which has the advantages of preventing the iron core from moving and avoiding the loosening of the bolts of the fixed yoke, so as to solve the problems of the shaking of the iron core and the loosening of the bolts of the fixed yoke caused by vibration during operation.

[0005] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a low-voltage series electric reactor comprises a lower yoke, a lower connecting plate, an insulating plate, a coil frame, an iron core, an upper yoke and an upper connecting plate. Two insulating plates are provided with a reaction tank, two partition plates, an expansion film, an elastic sealing strip, a sliding hole and a baffle. The reaction tank is opened on the end face of the insulating plate close to the iron core, and the three reaction tanks on the same insulating plate are communicated. The two partition plates are slidingly and sealingly installed at the middle positions of the side walls of the reaction tank and are used for separating the reaction tank. The two sides of the partition plate are respectively provided with a substance A and a substance B. The expansion film is fixedly installed at the opening of the reaction tank. The elastic sealing strip is fixedly installed on the side wall of one of the partition plates and is used for sealing the two partition plates. The sliding hole is opened in the insulating plates on both sides of the reaction tank, and a supporting rod is slidingly installed in the sliding hole. One end of the supporting rod is fixedly connected with the partition plate, and the other end of the supporting rod is flush with the outer wall of the insulating plate. The baffle is movably installed on the side wall of the insulating plate and is used for plugging the sliding hole.

[0006] Further, the mixture of the substance A and the substance B generates a large amount of gas at room temperature.

[0007] Further, the partition plates on both sides of the elastic sealing strip are provided with inclined surfaces, and blocking strips are fixedly installed on the upper and lower sides of the partition plate close to the elastic sealing strip.

[0008] Further, the elastic sealing strip is provided with a hole at the contact position with the partition plate, and when the elastic sealing strip is extruded by the partition plates on both sides, the hole of the elastic sealing strip is closed, and when the partition plates on both sides lose the constraint force, the hole of the elastic sealing strip is opened.

[0009] Further, the upper and lower insulation plates are further provided with: a mounting groove and a power block, the mounting groove is arranged in the insulation plate on both sides of the reaction tank, and the center of the mounting groove is on the same straight line as the center of the supporting rod; the power block is fixedly sleeved on the supporting rod in the mounting groove, the power block is close to the side wall of the reaction tank, the power block is isosceles trapezoidal, and the surface close to the reaction tank is the lower base; the moving groove is arranged in the side wall of the insulation plate, the moving groove is in communication with the mounting groove, the limiting block is slidably installed in the moving groove, and the other end of the limiting block extends out of the moving groove; the limiting block is trapezoidal, the bottom surface of the limiting block is parallel to the bottom surface of the power block, and one inclined surface of the limiting block is in sliding contact with the inclined surface of the power block; the inclined limiting groove is arranged in the side wall close to the limiting block at both ends of the stud, the inclined limiting groove is on the same vertical plane as the limiting block, the supporting block is fixedly installed on the vertical plate of the lower connecting plate and the upper connecting plate away from the moving groove, and the top end of the supporting block is close to one end of the nut.

[0010] Further, the top end of the supporting block is on the same vertical plane as the bottom surface of the limiting block away from the lower iron yoke and the upper iron yoke.

[0011] Further, the coil holder is provided with: a sliding groove, a moving block, a compensation groove and a compensation block, the sliding groove is arranged at the upper and lower ends of the coil holder; the moving block is slidably installed in the sliding groove, the moving block is trapezoidal, the bottom surface of the moving block is parallel to the bottom surface of the power block, and one inclined surface of the moving block is in sliding contact with the inclined surface of the power block; the compensation groove is arranged between the upper and lower sliding grooves of the coil holder; the compensation block is slidably installed in the compensation groove, the compensation block is provided with two inclined surfaces, the inclined surfaces of the compensation block are in sliding contact with the inclined surfaces of the moving block, and the inner wall of the compensation block is flush with the inner wall of the coil holder.

[0012] The application has the following beneficial effects:

[0013] 1. The low-voltage series reactor provided by the application, by opening a reaction tank on the upper and lower insulating plates, a partition plate is arranged in the reaction tank, an expansion film is fixedly arranged at the opening of the reaction tank, and substances A and B for generating reaction gas are arranged on both sides of the partition plate; after installation is completed, the two partition plates are separated by opening the baffle under the action of the elastic sealing strip, so that the substances A and B are mixed to generate a large amount of gas to form high pressure, the gas is in the reaction tank, and the high-pressure gas makes the expansion film expand, and the expansion films on the upper and lower sides fix the iron core, thereby preventing the iron core from moving up and down in the coil holder, avoiding damage to the coil holder or deformation of the surface of the iron core, and thereby avoiding the phenomenon of uneven magnetic conduction of the iron core.

[0014] 2. The low-voltage series reactor provided by the application, by opening a compensation groove on both sides of the inner wall of the coil holder, a compensation block is slidably arranged in the compensation groove, a sliding groove is opened on the upper and lower sides of the compensation groove, the sliding groove is communicated with the mounting groove, a moving block is slidably arranged in the sliding groove, a power block is fixedly arranged on the supporting rod in the mounting groove, the compensation block, the moving block and the power block are in contact in sequence, and the contact surfaces are inclined surfaces; after installation is completed, the two partition plates are separated by opening the baffle under the action of the elastic sealing strip, so that the substances A and B are mixed to generate a large amount of gas to form high pressure, the high-pressure gas pushes the partition plate, the supporting rod and the power block to move outward, so that the power block pushes the moving block to move, at the same time, the moving block pushes the compensation block to move towards the iron core, so that the compensation block extrudes the iron core to prevent the silicon steel sheet of the iron core from loosening when vibrating in the coil holder.

[0015] 3. The low-voltage series reactor provided by the application, by opening a moving groove on the lower connecting plate and the upper connecting plate close to the mounting groove, a limiting block is slidably arranged in the moving groove, and the limiting block protrudes out of the moving groove, and inclined limiting grooves are opened at both ends of the stud, the inclined limiting grooves and the limiting block are on the same vertical plane; after the stud and the nut are used to fix the iron yoke and the connecting plate, the inclined limiting groove of the stud is opposite to the limiting block, after the high-pressure gas in the reaction tank is generated after installation is completed, the high-pressure gas pushes the partition plate, the supporting rod and the power block to move outward, so that the power block pushes the limiting block to move towards the stud, so that the limiting block enters the inclined limiting groove, and even if the nut and the stud are loosened when the equipment vibrates, the limiting blocks on both sides limit the stud, and the distance between the limiting blocks on both sides is always unchanged, so that the pressure of the limiting block on the lower iron yoke and the lower connecting plate or the upper iron yoke and the upper connecting plate does not change, so that the lower iron yoke and the lower iron yoke are always fixed, preventing the lower iron yoke and the upper iron yoke from loosening. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0017] The application can be more clearly understood by referring to the following detailed description in conjunction with the accompanying drawings in which:

[0018] Figure 1 is a schematic view of the three-dimensional structure of the application;

[0019] Figure 2 is a sectional view of the three-dimensional structure of the application;

[0020] Figure 3 is a schematic view of the three-dimensional structure of the application Figure 2 is an enlarged view of the partial structure at A in the application;

[0021] Figure 4 is a sectional view of the three-dimensional structure of the application;

[0022] Figure 5 is a schematic view of the connection of the lower iron yoke, the lower connecting plate and the insulating plate of the application;

[0023] Figure 6 is a schematic view of the structure of the stud, the nut and the limiting block of the application.

[0024] In the figure: 1, lower iron yoke; 2, lower connecting plate; 3, stud; 301, limiting inclined groove; 4, nut; 5, support block; 6, insulating plate; 601, reaction tank; 602, partition plate; 603, expansion film; 604, elastic sealing strip; 605, blocking strip; 606, mounting groove; 607, sliding hole; 608, support rod; 609, power block; 610, blocking plate; 7, coil holder; 701, compensation groove; 702, compensation block; 703, sliding groove; 704, moving block; 8, upper iron yoke; 9, upper connecting plate; 10, moving groove; 11, limiting block; 12, iron core. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0026] Embodiment one

[0027] Please refer to Figure 1 and Figure 2The utility model provides a low voltage series reactor, including lower yoke 1, lower connecting plate 2, insulating plate 6, coil holder 7, iron core 12, upper yoke 8 and upper connecting plate 9, the both sides of lower yoke 1 are fixedly installed with lower connecting plate 2 through stud bolt 3 and nut 4, the upside of lower yoke 1 is fixedly provided with insulating plate 6, the upper of insulating plate 6 is provided with three coil holders 7 equidistantly, the outside of coil holder 7 is wound with coil, the inside of coil holder 7 is provided with iron core 12, the upper of three coil holders 7 is fixedly provided with another insulating plate 6, the upper of another insulating plate 6 is fixedly provided with upper yoke 8, the both sides of upper yoke 8 are fixedly installed with upper connecting plate 9 through stud bolt 3 and nut 4, and lower connecting plate 2 and upper connecting plate 9 are fixedly connected through pull rod.

[0028] Please refer to Figure 1 、 Figure 2 and Figure 3 , the end face of the upper and lower insulating plate 6 is provided with reaction groove 601, three reaction grooves 601 on the same insulating plate 6 are communicated, the opening of reaction groove 601 is fixedly installed with expansion film 603, two separation plates 602 for separating reaction groove 601 are slidingly and sealingly installed in the middle position of the side wall of reaction groove 601, the side wall of one of the two separation plates 602 is fixedly installed with elastic sealing strip 604, the elastic sealing strip 604 is used for sealing the two separation plates 602, the separation plate 602 close to the elastic sealing strip 604 is fixedly installed with baffle 605 on the upper and lower sides, substance A and substance B are respectively arranged between the two baffles 605 on the two sides of the separation plate 602, sliding hole 607 is formed in the insulating plate 6 on the two sides of reaction groove 601, support rod 608 is slidingly installed in sliding hole 607, one end of support rod 608 is fixedly connected with separation plate 602, the other end of support rod 608 is flush with the outer wall of insulating plate 6, baffle 610 is movably installed on the side wall of insulating plate 6, baffle 610 is used for plugging sliding hole 607, and baffle 610 can rotate.

[0029] Substance A and substance B generate a large amount of gas at room temperature after mixing, and the generated gas is not flammable and explosive, such as hydrogen peroxide solution and manganese dioxide, dilute hydrochloric acid solution and calcium carbonate.

[0030] The material of insulating plate 6, separation plate 602 and expansion film 603 needs to have certain corrosion resistance to prevent being corroded by substance A and substance B.

[0031] The separation plate 602 on the two sides of elastic sealing strip 604 is provided as an inclined surface. When the two separation plates 602 on the two sides are pushed open by elastic sealing strip 604, substance A and substance B can slide down along the inclined surface of separation plate 602, facilitating the mixing reaction of substance A and substance B on the two sides of separation plate 602.

[0032] The elastic sealing strip 604 has a hole at the contact with the partition plate 602. When the elastic sealing strip 604 is pressed by the partition plates 602 on both sides, the hole of the elastic sealing strip 604 is closed to prevent the substances A and B on both sides from passing through. When the constraint force of the partition plates 602 on both sides is lost, the elastic sealing strip 604 is opened to the partition plates 602 on both sides, and the hole of the elastic sealing strip 604 is opened.

[0033] The baffle 605 on both sides of the partition plate 602 is close to the bottom end of the reaction tank 601 and the expansion film 603 respectively. The sealed space between the two baffles 605 on the same side of the partition plate 602 is ensured to prevent the substances A and B from leaking.

[0034] The working principle of the embodiment one of the present application is as follows:

[0035] Please refer to Figure 1 、 Figure 2 and Figure 3 , after the reactor is installed through the lower connecting plate 2, the baffle 610 is twisted to no longer block the sliding hole 607. Under the action of the elastic force of the elastic sealing strip 604, the partition plates 602 on both sides slide outward by a certain distance, and the hole of the elastic sealing strip 604 is opened. At this time, the substances A and B on both sides of the partition plate 602 mix through the hole of the elastic sealing strip 604, and a large amount of gas is generated by chemical reaction. A large amount of gas is gathered in the reaction tank 601 to form high pressure. The high pressure gas makes the expansion film 603 expand, and the expanded expansion films 603 on the upper and lower sides press and fix the iron core 12, thereby preventing the iron core 12 from moving up and down in the coil frame 7, avoiding damage to the coil frame 7 or a certain deformation of the surface of the iron core 12, and thereby avoiding the phenomenon of uneven magnetic conduction of the iron core 12.

[0036] Embodiment two

[0037] The embodiment two is further improved on the basis of the embodiment one.

[0038] Different from the embodiment one, please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5The installation groove 606 is provided in the insulating plate 6 on both sides of the reaction tank 601, the center of the installation groove 606 is on the same straight line as the center of the supporting rod 608, the supporting rod 608 in the installation groove 606 is fixedly sleeved with a power block 609, the power block 609 is close to the side wall of the installation groove 606 close to the reaction tank 601, the power block 609 is isosceles trapezoidal, the surface of the power block 609 close to the reaction tank 601 is the lower base, the moving groove 10 is provided in the side wall of the insulating plate 6 close to the lower connecting plate 2 and the upper connecting plate 9, the moving groove 10 is communicated with the installation groove 606, the limit block 11 is slidingly installed in the moving groove 10, one end of the limit block 11 extends out of the moving groove 10, the limit block 11 is trapezoidal, the bottom surface of the limit block 11 is parallel to the bottom surface of the power block 609, and one inclined surface of the limit block 11 is in sliding contact with the inclined surface of the power block 609, the inclined limit groove 301 is provided in the side wall of the lower connecting plate 2 and the upper connecting plate 9 close to the limit block 11 at both ends of the stud 3, the inclined limit groove 301 is on the same vertical plane as the limit block 11, and the supporting block 5 is fixedly installed on the vertical plate of the lower connecting plate 2 and the upper connecting plate 9 away from the moving groove 10, and the top end of the supporting block 5 is close to one end of the nut 4.

[0039] In order to prevent the stud 3 from rotating, the width of the limit block 11 is smaller than the diameter of the stud 3, and the inclined limit groove 301 on the stud 3 is closely matched with the limit block 11.

[0040] The top end of the supporting block 5 is on the same vertical plane as the bottom surface of the limit block 11 away from the lower iron yoke 1 and the upper iron yoke 8. After the lower iron yoke 1 and the lower connecting plate 2 or the upper iron yoke 8 and the upper connecting plate 9 are fixed by the stud 3 and the nut 4, the nut 4 does not affect the limit block 11 entering the inclined limit groove 301.

[0041] The upper and lower ends of the coil holder 7 are provided with sliding grooves 703, and moving blocks 704 are slidingly installed in the sliding grooves 703, the moving blocks 704 are trapezoidal, the bottom surface of the moving block 704 is parallel to the bottom surface of the power block 609, and one inclined surface of the moving block 704 is in sliding contact with the inclined surface of the power block 609, the compensation groove 701 is provided between the upper and lower sliding grooves 703 of the coil holder 7, the compensation block 702 is slidingly installed in the compensation groove 701, the compensation block 702 is provided with two inclined surfaces, the inclined surfaces of the compensation block 702 are in sliding contact with the inclined surfaces of the moving block 704, and the inner wall of the compensation block 702 is flush with the inner wall of the coil holder 7.

[0042] The working principle of the second embodiment of the application is as follows:

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5After the reactor is installed through the lower connecting plate 2, the baffle 610 is twisted so that the baffle 610 no longer covers the sliding hole 607. Under the elastic force of the elastic sealing strip 604, the two side partition plates 602 slide outward by a certain distance, and the hole of the elastic sealing strip 604 is opened. At this time, the substances A and B on both sides of the partition plate 602 mix through the hole of the elastic sealing strip 604 and chemically react to generate a large amount of gas. The large amount of gas accumulates in the reaction tank 601 to form high pressure. The high pressure gas pushes the partition plate 602 and the stop bar 605 to move to both sides. At the same time, the partition plate 602 pushes the support rod 608 and the power block 609 to move outward. The inclined surface of the outward moving power block 609 slides along the inclined surface of the limiting block 11, so that the inclined surface of the power block 609 extrudes the inclined surface of the limiting block 11, and the limiting block 11 slides outward from the moving groove 10. At the same time, the other end of the limiting block 11 slides into the inclined limiting groove 301. The limiting block 11 limits the stud 3. Even if the nut 4 and the stud 3 are loose during the vibration of the reactor, the limiting block 11 is clamped in the inclined limiting groove 301, the limiting blocks 11 on both sides limit the stud 3, and the distance between the limiting blocks 11 on both sides is always unchanged. The pressure of the limiting block 11 on the lower yoke 1 and the lower connecting plate 2 or the upper yoke 8 and the upper connecting plate 9 also does not change, so that the lower yoke 1 or the upper yoke 8 is always fixed, preventing the lower yoke 1 and the upper yoke 8 from loosening. At the same time that the partition plate 602 pushes the support rod 608 and the power block 609 to move, the inclined surface of the outward moving power block 609 slides along the inclined surface of the moving block 704, so that the inclined surface of the power block 609 extrudes the inclined surface of the moving block 704, and the moving block 704 slides into the sliding groove 703. The sliding groove 703 that slides into the sliding groove 703 extrudes the compensation block 702, so that the compensation block 702 slides inward from the coil holder 7. Thus, the inner wall of the compensation block 702 tightly abuts against the side wall of the iron core 12, and the compensation blocks 702 on both sides extrude the iron core 12 to prevent the silicon steel sheets of the iron core 12 from loosening when vibrating in the coil holder 7.

Claims

1. A low-voltage series reactor, comprising a lower yoke, a lower connecting plate, an insulating plate, a coil frame, an iron core, an upper yoke, and an upper connecting plate, characterized in that: The upper and lower insulating plates are provided with: The reaction tank is located on the end face of the insulating plate that is in close contact with the iron core, and the three reaction tanks on the same insulating plate are connected. Two partition plates are slidably and sealed in the middle of the side wall of the reaction tank to separate the reaction tank. Substance A and substance B are respectively provided on both sides of the partition plate. An expansion membrane is fixedly installed at the opening of the reaction tank; An elastic sealing strip is fixedly installed on the side wall of one of the partition plates, and the elastic sealing strip is used to seal the two partition plates; A sliding hole is formed in the insulating plate on both sides of the reaction tank, and a support rod is slidably installed in the sliding hole. One end of the support rod is fixedly connected to the partition plate, and the other end of the support rod is flush with the outer wall of the insulating plate. A baffle, movably installed on the side wall of the insulating plate, is used to block the sliding holes; Upper connecting plates are fixedly installed on both sides of the upper yoke by studs and nuts; The upper and lower insulating plates are also provided with: The mounting slots are located inside the insulating plates on both sides of the reaction tank, and the center of the mounting slots is on the same straight line as the center of the support rod. A power block is fixedly fitted onto a support rod within an installation groove. The power block is in close contact with the side wall of the installation groove near the reaction tank. The power block is an isosceles trapezoid, and the surface of the power block near the reaction tank is the bottom surface. The lower connecting plate and the upper connecting plate have movable grooves on their side walls that are close to the insulating plate. The movable grooves are connected to the mounting grooves, and the movable grooves are provided with: A limiting block has one end slidably installed in a moving groove and the other end extending out of the moving groove. The limiting block is trapezoidal, and the bottom surface of the limiting block is parallel to the bottom surface of the power block. One inclined surface of the limiting block is in sliding contact with the inclined surface of the power block. The stud has oblique limiting grooves on the side walls near the limiting block at both ends. The oblique limiting grooves and the limiting block are on the same vertical plane. A support block is fixedly installed on the side of the lower connecting plate and the upper connecting plate away from the moving groove. The top of the support block is close to one end of the nut.

2. A low-voltage series reactor according to claim 1, characterized in that, When substance A and substance B are mixed, a large amount of gas is generated at room temperature.

3. A low-voltage series reactor according to claim 1, characterized in that, The partition plates on both sides of the elastic sealing strip are designed as inclined surfaces. The upper and lower sides of the partition plates near the elastic sealing strip are fixedly installed with baffles. Substance A and substance B are respectively placed between the two baffles on both sides of the partition plate.

4. A low-voltage series reactor according to claim 1, characterized in that, The elastic sealing strip has holes at the contact point with the partition plate. When the elastic sealing strip is squeezed by the partition plates on both sides, the holes of the elastic sealing strip close. When the partition plates on both sides lose their restraining force, the holes of the elastic sealing strip open.

5. A low-voltage series reactor according to claim 1, characterized in that, The top of the support block and the bottom surface of the limiting block away from the lower and upper yokes are on the same vertical plane.

6. A low-voltage series reactor according to claim 1, characterized in that, The coil frame is equipped with: Slides are provided at the upper and lower ends of the coil frame; A movable block is slidably installed in a groove. The movable block is trapezoidal, and the bottom surface of the movable block is parallel to the bottom surface of the power block. One inclined surface of the movable block is in sliding contact with the inclined surface of the power block. The compensation groove is located between the upper and lower sliding grooves of the coil frame; The compensation block is slidably installed in the compensation groove. The compensation block has two inclined surfaces. The inclined surfaces of the compensation block are in sliding contact with the inclined surfaces of the moving block. The inner wall of the compensation block is flush with the inner wall of the coil frame.

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