CN220774081U - Reactor with resonance filtering function - Google Patents

Abstract

The utility model relates to the technical field of filters, in particular to a reactor with a resonance filtering function, which comprises an inductor, a capacitor, a fixed plate and a buffer component, wherein the inductor is arranged on the fixed plate; the inductor is connected with the fixed plate through the buffer component; the capacitor is arranged on the fixed plate; the buffer component is provided with a connecting piece, a buffer piece and a movable piece; the connecting piece is fixedly connected with the inductor; the movable piece is fixedly connected with the fixed plate; the buffer piece is arranged between the connecting piece and the movable piece so as to weaken the conduction of force between the connecting piece and the movable piece, and the shock absorption performance of the reactor can be improved and the damage probability of the reactor and a connecting line in the transportation process can be reduced through the shock absorption device.

Description

Reactor with resonance filtering function

Technical Field

The utility model relates to the technical field of filters, in particular to a reactor with a resonance filtering function.

Background

The reactor is also called an inductor, and when one conductor is electrified, a magnetic field is generated in a certain space occupied by the conductor, so that all the conductors capable of carrying current have a common sense of inductance. However, the inductance of the electrified long straight conductor is smaller, and the generated magnetic field is not strong, so that the actual reactor is in a form of a solenoid formed by winding a wire, namely an air core reactor; sometimes, in order to make the solenoid have a larger inductance, a core, called a core reactor, is inserted into the solenoid. Reactance is classified into inductive reactance and capacitive reactance, and a comparatively scientific classification is that an inductive reactor (inductor) and a capacitive reactor (capacitor) are collectively called a reactor, however, since an inductor has been previously known and called a reactor, a capacitor is called a capacitive reactor, and a reactor is called an inductor exclusively.

The power grid is provided with a large number of harmonic sources such as rectifying devices, converting devices, frequency conversion devices and the like, and the generated higher harmonic can seriously damage the main transformer and the safe operation of other electrical equipment in the system. The reactor is widely used in high-low voltage filter cabinets, is connected in series with a capacitor, is tuned to a certain resonant frequency, is used for absorbing harmonic current of corresponding frequency in a power grid, has reactance rates of 1%, 5.67%, 6%, 12%, 13% and the like, and can eliminate 3, 5, 7, 11, 13 times and higher harmonics. After the reactor is connected with the capacitor in series, not only can the power grid harmonic be effectively absorbed, but also the power factor of the system is improved, the safe operation of the system is greatly affected, and the overload condition can be avoided. In order to facilitate the transportation and the installation, in the prior art, the capacitor is generally rigidly connected with the shell of the reactor in a bolt fixing manner, and the integration manner is unfavorable for the transportation of the capacitor and the reactor, and the vibration generated in the transportation process can be directly transmitted to the capacitor through the shell of the reactor, so that the capacitor and the reactor are easily damaged integrally after being integrated.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the reactor with the resonance filtering function, which can improve the shock absorption performance of the reactor and reduce the damage probability of the reactor and a connecting line in the transportation process.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a reactor with resonance filtering function comprises an inductor, a capacitor, a fixed plate and a buffer component; the inductor is connected with the fixed plate through the buffer component; the capacitor is arranged on the fixed plate; the buffer component is provided with a connecting piece, a buffer piece and a movable piece; the connecting piece is fixedly connected with the inductor; the movable piece is fixedly connected with the fixed plate; the buffer piece is arranged between the connecting piece and the movable piece so as to weaken the conduction of force between the connecting piece and the movable piece.

Preferably, the connecting piece comprises a connecting rod, a supporting shaft and a limiting block; the connecting rod is fixedly connected with the inductor; the support shaft is vertically arranged, and the upper end of the support shaft is fixedly connected with the connecting rod; the limiting block is fixedly arranged at the lower end of the supporting shaft; the movable piece comprises a sleeve; the sleeve is fixedly arranged at the front end of the fixed plate; the buffer comprises a spring; the sleeve and the spring are sleeved on the supporting shaft, and the sleeve and the spring are in compression joint; the sleeve slides relative to the support shaft, and the outer diameters of the sleeve and the spring are smaller than the outer diameter of the limiting block.

Preferably, the buffer assembly is provided with a plurality of groups.

Preferably, the device further comprises a support rod; the support rod is fixedly arranged at the rear end of the fixing plate; the capacitor is arranged on the fixed plate through the supporting rod.

Preferably, the inductor has an iron core and a coil; the coil is wound on the iron core; the capacitor is connected in series with the coil; the capacitance is provided with three capacitors; the capacitors are in one-to-one correspondence with the coils; the three capacitors are connected in parallel.

Preferably, the iron core is made of silicon steel.

Preferably, the inductor is further provided with a base, an upper clamping plate and a plurality of pairs of pull screws; the base is connected with the upper clamping plate through a counter-pulling screw; the iron core is fixed on the base; the upper clamping plate is arranged at the upper end part of the iron core; the connecting piece is fixedly connected with the base or the upper clamping plate alternatively.

Preferably, the inductor further has an insulating bar; the insulating strip is arranged on the inner side of the coil.

Compared with the prior art, the utility model has the beneficial effects that: through setting up buffer unit between inductor and electric capacity, inductor and electric capacity pass through buffer unit swing joint, when the reactor vibrates, because be spring coupling between inductor and the electric capacity, the vibration of inductor is prevented by the spring and is conducted for the vibration that condenser and connecting wire received significantly reduces, thereby promotes this reactor bradyseism performance, and reduced the damage probability of this reactor in the transportation.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic view of the connection of the sleeve and the fixing plate according to the present utility model;

FIG. 4 is a schematic diagram of the front side structure of the filter according to the present utility model;

fig. 5 is a schematic diagram of the inductor-capacitor connection according to the present utility model.

In the figure: the device comprises a core 1, a coil 2, a wiring row 3, a base 4, an upper clamping plate 5, a capacitor 6, a fixing plate 7, a buffer assembly 8, a 9-pair pull screw rod, a 10 supporting rod, an 11 insulating strip, a 81 connecting rod, a 82 supporting shaft, an 83 limiting block, a 84 sleeve and a 85 spring.

Detailed Description

The following detailed description of the utility model, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a more readily understood understanding of how the utility model may be practiced. While the present utility model has been described in connection with the preferred embodiments thereof, these embodiments are set forth only and are not intended to limit the scope of the utility model.

First embodiment: referring to fig. 1-5, a reactor with resonance filtering function includes: an inductor, a capacitor 6 and a buffer assembly 8; the inductor is a three-phase inductor, three capacitors 6 are arranged, and the three capacitors 6 are movably connected with the inductor through a buffer component 8.

The inductor comprises an iron core 1, a coil 2, a plurality of wiring rows 3, a base 4, an upper clamping plate 5, a plurality of opposite-pulling screws 9 and a plurality of insulating strips 11; the iron core 1 consists of two end posts which are transversely arranged and three support posts which are vertically arranged, and the iron core 1 is of a Chinese character 'ri' -shaped structure; the iron core with the structure of Chinese character 'ri' can concentrate magnetic flux more and reduce magnetic flux leakage; the iron core 1 is fixedly arranged on the base 4, the upper clamping plate 5 is arranged at the upper end part of the iron core 1, and meanwhile, in order to keep the stability of the structure, the base 4 and the upper clamping plate 5 are fixedly connected through a counter-pulling screw 9; in this embodiment, the iron core 1 is made of silicon steel, so that the magnetic permeability of the iron core can be improved, the magnetic flux leakage can be further reduced, and in addition, the iron core made of silicon steel has the characteristic of low loss.

The coil 2 is provided with three groups, the three groups of coils 2 are correspondingly wound on three support posts of the iron core 1 one by one, and in order to avoid mutual interference inside the coils, each layer of the coils 2 is separated by an insulating strip 11, and in addition, the wiring row 3 is arranged on the coils 2 and is used for connecting the coils 2 with external circuits.

The reactor also comprises a fixed plate 7 and three support rods 10; the three support rods 10 are fixedly arranged at the rear end of the fixed plate 7; the three capacitors 6 and the fixing plate 7 are arranged on the rear side of the inductor, wherein the three capacitors 6 are fixedly arranged on the rear side of the fixing plate 7 through the supporting rod 10; the fixed plate 7 is movably connected with the inductor through a buffer component 8; the buffer assembly 8 has a connecting rod 81, a support shaft 82, a stopper 83, a sleeve 84, and a spring 85; the connecting rod 81 is fixedly connected with the inductor; the supporting shaft 82 is vertically arranged, the upper end of the supporting shaft 82 is fixedly connected with the lower end of the connecting rod 81, and the limiting block 83 is fixedly arranged at the lower end of the supporting shaft 82, and it is noted that the outer diameter of the limiting block 83 is larger than that of the supporting shaft 82; the sleeve 84 and the spring 85 are sleeved on the support shaft 82, the sleeve 84 and the support shaft 82 slide relatively, and the sleeve 84 and the spring 85 are in compression joint; the periphery of the sleeve 84 is fixedly connected with the front end of the fixed plate 7; the advantage of setting like this lies in when the reactor vibrates, owing to be spring coupling between inductor and the condenser, the vibration of inductor is prevented by spring 85 and is conducted for the vibration that condenser and connecting wire received significantly reduces, thereby promotes this reactor bradyseism performance, and has reduced the damage probability of this reactor in the transportation.

In order to keep the stability of the structure, the buffer components 8 are arranged in four groups, the four groups of buffer components 8 are uniformly distributed on the front side of the fixing plate 7, further, the positions of two buffer components 8 in the four groups of buffer components 8 correspond to the position of the upper clamping plate 5, the positions of the other two buffer components 8 correspond to the position of the base 4, the buffer components 8 on the upper side and the lower side are oppositely arranged, the buffer components 8 on the upper side are fixed in a mode of fixedly connecting the connecting rod 81 with the upper clamping plate 5, and the buffer components 8 on the lower side are fixed in a mode of fixedly connecting the connecting rod 81 with the base 4.

The wiring row 3 comprises wiring rows U1, U2, V1, V2, W1 and W2, and the specific wiring mode is shown in fig. 5, three capacitors and three coils are in one-to-one correspondence, capacitors and coils in the correspondence are connected in series, and the three capacitors are connected in parallel.

Through this technical scheme, through setting up buffer unit between inductor and electric capacity, inductor and electric capacity pass through buffer unit swing joint, when the reactor vibrates, because be spring coupling between inductor and the condenser, the vibration of inductor is prevented by the spring and is conducted for the vibration that condenser and connecting wire received significantly reduces, thereby promotes this reactor cushioning property, and reduced the damage probability of this reactor in the transportation.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a reactor with resonance filtering function which characterized in that: comprises an inductor, a capacitor (6), a fixed plate (7) and a buffer component (8); the inductor is connected with the fixed plate (7) through the buffer component (8); the capacitor (6) is arranged on the fixed plate (7); the buffer component (8) is provided with a connecting piece, a buffer piece and a movable piece; the connecting piece is fixedly connected with the inductor; the movable piece is fixedly connected with the fixed plate (7); the buffer piece is arranged between the connecting piece and the movable piece so as to weaken the conduction of force between the connecting piece and the movable piece.

2. A reactor with resonance filtering function according to claim 1, characterized in that: the connecting piece comprises a connecting rod (81), a supporting shaft (82) and a limiting block (83); the connecting rod (81) is fixedly connected with the inductor; the support shaft (82) is vertically arranged, and the upper end of the support shaft (82) is fixedly connected with the connecting rod (81); the limiting block (83) is fixedly arranged at the lower end of the supporting shaft (82); the moveable member includes a sleeve (84); the sleeve (84) is fixedly arranged at the front end of the fixed plate (7); the buffer comprises a spring; the sleeve (84) and the spring are sleeved on the supporting shaft (82), and the sleeve (84) and the spring are in compression joint; the sleeve (84) slides relative to the support shaft (82) and the outer diameter of the sleeve (84) and the spring is smaller than the outer diameter of the limiting block (83).

3. A reactor with resonance filtering function according to claim 1, characterized in that: the buffer components (8) are provided with a plurality of groups.

4. A reactor with resonance filtering function according to claim 1, characterized in that: also comprises a supporting rod (10); the supporting rod (10) is fixedly arranged at the rear end of the fixed plate (7); the capacitor (6) is arranged on the fixed plate (7) through the supporting rod (10).

5. A reactor with resonance filtering function according to claim 1, characterized in that: the inductor has an iron core (1) and a coil (2); the coil (2) is wound on the iron core (1); the capacitor (6) is connected in series with the coil (2); the capacitors (6) are provided with three capacitors; the capacitors (6) are in one-to-one correspondence with the coils (2); the three capacitors (6) are connected in parallel.

6. A reactor with resonance filtering function according to claim 5, wherein: the iron core (1) is made of silicon steel.

7. A reactor with resonance filtering function according to claim 5, wherein: the inductor is also provided with a base (4), an upper clamping plate (5) and a plurality of pairs of pull screws (9); the base (4) is connected with the upper clamping plate (5) through a counter-pulling screw rod (9); the iron core (1) is fixed on the base (4); the upper clamping plate (5) is arranged at the upper end part of the iron core (1); the connecting piece is fixedly connected with the base (4) or the upper clamping plate (5) alternatively.

8. A reactor with resonance filtering function according to claim 5, wherein: the inductor also has an insulating strip (11); the insulating strip (11) is arranged on the inner side of the coil (2).