CN213635718U - Energy-saving dry-type power capacitor - Google Patents

Abstract

The utility model discloses an energy-conserving dry-type power capacitor, including shell and insulating encapsulating layer, be equipped with the tight hoop on the outer wall of shell, the both ends of tight hoop are equipped with the fixed bolster, the insulating inner bag of inboard installation of shell, insulating inner bag internally mounted electric capacity component, the last connection electrode of electric capacity component, the electrode mounting is on the top of shell and stretches out the shell, the outside cover of one end that the electrode stretches out the shell has the retainer plate, the top of shell is equipped with bleeder vent and insulating encapsulating hole, insulating encapsulating layer waters to the inside of shell through insulating encapsulating hole. This energy-conserving dry-type power capacitor, it is small, the production process flow of product is simple, is fit for big batch industrial production, and is of high quality, excellent performance moreover, novel structure, and insulating effectual, non-deformable leads to the short circuit, has the discharge protection function, can effectively avoid the danger of electric shock human body, and the security is high, and long service life has reduced the electrical loss of the normal work of condenser, safety, energy-conservation.

Description

Energy-saving dry-type power capacitor

Technical Field

The utility model relates to a power capacitor field specifically is an energy-conserving dry-type power capacitor.

Background

A power capacitor is a capacitor used for power systems and electrical equipment. The capacitance of the capacitor is determined by its geometrical dimensions and the properties of the insulating medium between the two plates. In order to safely operate the power capacitor, a discharge resistor is usually installed inside the power capacitor, and the discharge resistor mainly plays three roles: the residual charge is released, so that the residual voltage of the capacitor can be reduced to be within a safe voltage within a specified time after the capacitor is separated from a power supply, and personal and equipment safety is ensured; secondly, releasing 'trapped charges' generated by the action of the internal fuse and eliminating additional direct current voltage generated by the 'trapped charges' for the capacitor protected by the internal fuse; for the direct current filter capacitor, the discharge resistor is connected in parallel to each element section, so that the residual charge of the direct current filter capacitor is released, and the direct current filter capacitor also plays a role of a voltage divider, so that the direct current voltage on each element section is uniformly distributed. The existing capacitor has poor firmness and easy loosening, and the loss of the capacitor is increased due to the larger resistance value of the contact resistor. The traditional capacitor has poor heat dissipation effect, part of products originally have no heat dissipation performance, and a heat dissipation device is added on a shell of the capacitor in continuous updating, but the heat dissipation device and the shell of the capacitor are integrally formed, so that the difficulty in processing and manufacturing is high, the cost is high, and the heat dissipation performance is general. The energy-saving capacitor is one of power capacitors, the discharge resistor of the existing motor energy-saving capacitor is arranged in the capacitor, the mounting structure has a plurality of defects, the electrode is easy to deflect or break, the occurrence of the situation can not only cause poor contact of the electrode, but also cause short circuit of the capacitor, cause high-temperature explosion, even burn and other situations, and cause abandonment of devices and waste of cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-conserving dry-type power capacitor, it is small to have, and the production process flow of product is simple, is fit for big batch industrial production, and is of high quality, excellent performance moreover, novel structure, and insulating effectual, non-deformable leads to the short circuit, has discharge protection function, can effectively avoid the human danger of electric shock, and the security is high, and long service life has reduced the electrical loss of the normal work of condenser, and problem among the prior art can be solved to safe, energy-conserving advantage.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an energy-conserving dry-type power capacitor, includes shell and insulating encapsulating layer, be equipped with the lock ring on the outer wall of shell, the both ends of lock ring are equipped with the fixed bolster, the insulating inner bag of inboard installation of shell, insulating inner bag internally mounted electric capacity component, the last connection electrode of electric capacity component, the electrode mounting is on the top of shell and stretches out the shell, the outside cover of one end that the electrode stretches out the shell has the fixed bolster, the top of shell is equipped with bleeder vent and insulating encapsulating hole, insulating encapsulating layer waters the inside to the shell through insulating encapsulating hole.

The capacitor element comprises a capacitor inner core, a discharge resistor, a first wire, a second wire and a third wire, wherein the top of the capacitor inner core is connected with the first wire, and the bottom of the capacitor inner core is connected with the second wire.

Preferably, the capacitor inner core is connected with the discharge resistor in parallel.

Preferably, the fixing ring is erected on the surface of the shell, and an elastic piece for stably mounting the electrode is arranged on the fixing ring.

Preferably, the discharge resistor is connected with the capacitor inner core through a third lead.

Preferably, the insulation potting layer tightly bonds the capacitor inner core and the outer shell together.

Preferably, the ring body of the fixing ring is in a non-closed state, an opening is vertically formed in the ring body of the fixing ring, and the ring bodies on two sides of the opening form two clamping jaws.

Preferably, the top end of the shell is provided with a positioning hole, and one end of the electrode extends out of the positioning hole.

Compared with the prior art, the beneficial effects of the utility model are as follows:

this energy-conserving dry-type power capacitor, small, the production process flow of product is simple, be fit for big batch industrial production, and of high quality, excellent performance, novel structure, it is insulating effectual, non-deformable leads to the short circuit, discharge protection function has, can effectively avoid the human danger of electric shock, high in safety, long service life, the electrical loss of the normal work of condenser has been reduced, safety, energy-conservation, set up the effectual condenser of having avoided of tight band ring and exploded because the inflation, insulating inner bag is the insulating inner bag of stereoplasm, can make shell non-deformable, the inside part of protective capacitor is not destroyed, prevent short circuit or electric leakage, insulating encapsulating layer does.

The epoxy material is made, the epoxy material is high to the bonding strength of metal, the dielectric property is good, and stability is good, can bond electric capacity inner core and shell together closely under high temperature high pressure environment, the performance of condenser has been guaranteed, elastic component and clamping jaw on the retainer plate can make retainer plate and electrode connection ground more firm, the leakproofness between them has also been increased, can also adapt to the electrode of different thickness, the flexibility ratio is high, the practicality is high, wide in application, discharge resistance can be zero the voltage drop of electric capacity inner core, avoided because the electric capacity inner core is electrified, the human danger of electric shock after the human touch, the security is high.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an external structural view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a partial structure diagram of the present invention.

In the figure: 1. a housing; 2. insulating and encapsulating layers; 3. a clamping ring; 4. an insulating inner container; 5. a capacitive element; 51. an inner core of the capacitor; 52. a discharge resistor; 53. a first conductive line; 54. a second conductive line; 55. a third conductive line; 6. an electrode; 7. a stationary ring; 8. air holes are formed; 9. insulating hole filling and sealing; 10. and fixing the bracket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an energy-saving dry power capacitor comprises a housing 1 and an insulating potting layer 2, wherein a clamping ring 3 is arranged on the outer wall of the housing 1, fixing brackets 10 are arranged at two ends of the clamping ring 3, the clamping ring 3 can fasten the capacitor to prevent the capacitor from exploding due to expansion, the fixing brackets 10 enable the capacitor to be more firmly installed, an insulating liner 4 is installed on the inner side of the housing 1, the insulating liner 4 is a hard insulating liner and can support the housing 1 to be hard and not easy to deform, the structure is novel, components inside the capacitor are protected from being damaged to prevent short circuit or electric leakage, a capacitor element 5 is installed inside the insulating liner 4, an electrode 6 is connected to the capacitor element 5, the electrode 6 is installed at the top end of the housing 1 and extends out of the housing 1, a positioning hole is arranged at the top end of the housing 1, one end of the electrode 6 extends out of the positioning hole, the electrode 6 extends out of a fixing ring, the fixing ring 7 is arranged on the surface of the shell 1 in an overlapping mode, an elastic piece enabling the electrode 6 to be installed stably is arranged on the fixing ring 7, the fixing ring 7 and the electrode 6 are connected more stably due to extrusion of the elastic piece, the sealing performance of the fixing ring 7 and the electrode 6 is improved, the ring body of the fixing ring 7 is in a non-closed state, an opening is vertically formed in the ring body of the fixing ring 7, two clamping jaws are formed on the ring body on two sides of the opening, the clamping jaws can adapt to the electrodes 6 with different thicknesses, the flexibility is high, the practicability is high, the application range is wide, the air holes 8 and the insulating hole filling holes 9 are formed in the top of the shell 1, 2 air holes 8 can be arranged, the air holes 8 can discharge heat generated in the capacitor, the electric loss of normal operation of the capacitor is reduced, safety and energy conservation are achieved, the insulating hole filling layer 2 is filled into the shell 1 through the insulating hole filling holes 9, the insulating hole filling layer 2 is, the dielectric property is good, and stability is good, and under high temperature high pressure environment, the epoxy resin material can be because the adhesion degree is high, can closely bond electric capacity inner core 51 and shell 1 together, and when using, insulating potting layer 2 can not separate with shell 1, and electric capacity inner core 51 can not separate with shell 1 yet, has guaranteed the performance of condenser.

Referring to fig. 4, the capacitor element 5 includes a capacitor core 51, a discharge resistor 52, a first wire 53, a second wire 54 and a third wire 55, the first wire 53 is connected to the top of the capacitor core 51, the second wire 54 is connected to the bottom of the capacitor core 51, the discharge resistor 52 is connected to the capacitor core 51 through the third wire 55, the capacitor core 51 is connected in parallel with the discharge resistor 52, when the power supply is cut off, the power stored in the capacitor core 51 can be discharged within a short time, that is, the capacitor core 51 is used as the power supply, the discharge resistor 52 is used as the load to form a closed loop for discharging, the voltage drop of the capacitor core 51 is zero, the risk of electric shock to the human body after the human body touches due to the charged capacitor core 51 is avoided, and the safety is high.

To sum up, the energy-saving dry-type power capacitor has the advantages of small volume, simple production process flow of products, suitability for large-scale industrial production, good quality, excellent performance, novel structure, good insulation effect, difficult deformation to cause short circuit, discharge protection function, capability of effectively avoiding the danger of electric shock to human bodies, high safety, long service life, reduction of electric loss of normal work of the capacitor, safety and energy conservation, effective prevention of explosion of the capacitor due to expansion by arranging the clamping ring 3, capability of ensuring that the shell 1 is not easy to deform by arranging the hard insulation liner 4 as the hard insulation liner to protect components in the capacitor from being damaged and prevent short circuit or electric leakage, capability of tightly bonding the capacitor inner core 51 and the shell 1 together by using the epoxy resin material as the insulation encapsulating layer 2, high bonding strength of the epoxy resin material to metal, good dielectric property and good stability, capability of tightly bonding the capacitor inner core 51 and the shell 1 together under the high-temperature and high, guaranteed the performance of condenser, elastic component and clamping jaw on the retainer plate 7 can make retainer plate 7 and electrode 6 firm more with connecting, have also increased leakproofness between them, can also adapt to the electrode 6 of different thickness, and the flexibility ratio is high, the practicality is high, the application is wide, discharge resistance 52 can be zero electric capacity inner core 51's voltage drop, has avoided because electric capacity inner core 51 is electrified, the human danger of electric shock after the human touch, and the security is high.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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

Claims (7)

1. The utility model provides an energy-conserving dry-type power capacitor, includes shell (1) and insulating potting layer (2), its characterized in that: the insulating and sealing device is characterized in that a clamping ring (3) is arranged on the outer wall of the shell (1), fixing supports (10) are arranged at two ends of the clamping ring (3), an insulating inner container (4) is arranged on the inner side of the shell (1), a capacitor element (5) is arranged inside the insulating inner container (4), an electrode (6) is connected onto the capacitor element (5), the electrode (6) is arranged at the top end of the shell (1) and extends out of the shell (1), a fixing ring (7) is sleeved outside one end of the electrode (6) extending out of the shell (1), an air hole (8) and an insulating and sealing hole (9) are formed in the top of the shell (1), and the insulating and sealing layer (2) is poured into the shell (1) through the insulating and sealing;

the capacitor element (5) comprises a capacitor inner core (51), a discharge resistor (52), a first lead (53), a second lead (54) and a third lead (55), wherein the top of the capacitor inner core (51) is connected with the first lead (53), and the bottom of the capacitor inner core (51) is connected with the second lead (54).

2. An energy efficient dry power capacitor as claimed in claim 1, wherein: the capacitor inner core (51) is connected with the discharge resistor (52) in parallel.

3. An energy efficient dry power capacitor as claimed in claim 1, wherein: the fixed ring (7) is arranged on the surface of the shell (1) in an overlapping mode, and an elastic piece enabling the electrode (6) to be installed stably is arranged on the fixed ring (7).

4. An energy efficient dry power capacitor as claimed in claim 1, wherein: the discharge resistor (52) is connected with the capacitor inner core (51) through a third lead (55).

5. An energy efficient dry power capacitor as claimed in claim 1, wherein: the capacitor inner core (51) is tightly bonded with the outer shell (1) through the insulating potting layer (2).

6. An energy efficient dry power capacitor as claimed in claim 1, wherein: the ring body of retainer plate (7) is non-closed state, and the ring body of retainer plate (7) is last vertically to have seted up the opening, and the ring body of opening both sides forms two clamping jaws.

7. An energy efficient dry power capacitor as claimed in claim 1, wherein: the top end of the shell (1) is provided with a positioning hole, and one end of the electrode (6) extends out of the positioning hole.

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