CN218333483U - Compact water-cooled capacitor - Google Patents

Abstract

The utility model discloses a compact water-cooling condenser, include: the electrode ring group and the cooling disc in the shell body, first end cover and second end cover that set up respectively both ends about the shell body, hold, first end cover and/or the second end cover is located outer tip around the periphery and is equipped with annular mounting groove towards the axis is concave, the cooling disc holds annular mounting groove is interior and encloses and be formed with annular water circulating channel, seted up on the cooling disc communicate in water circulating channel's water inlet and delivery port. This compact water-cooling capacitor has make full use of the spatial structure of condenser, under the size that does not increase the condenser, realizes water circulative cooling, and the user can use in original matching box, need not to reserve more installation space for the condenser, and overall structure is compacter succinct.

Description

Compact water-cooled capacitor

Technical Field

The utility model relates to a condenser technical field, in particular to compact water-cooling capacitor.

Background

The vacuum capacitor is a capacitor taking vacuum as a medium, an electrode group of the capacitor is a group of concentric cylindrical electrodes formed by extending a high-conductivity oxygen-free copper strip through a whole set of high-precision die, and the electrodes are sealed in a vacuum container, so that the performance is stable and reliable, and phenomena such as flashover, corona and the like are not easy to generate. Vacuum capacitors fall into two main categories: a vacuum capacitor having a fixed capacitance, wherein the geometric relationship between the electrodes remains unchanged; variable capacitors, in which the shape, orientation or spacing of one or both electrodes can be varied, change the device capacitance.

Along with the application of variable ceramic vacuum capacitor in a large number in semiconductor manufacturing equipment, the problem of generating heat of capacitor body under the radio frequency condition is taken into account gradually, and the most common solution of prior art is to install the cooling disc at the both ends of condenser through the screw, installs O type circle at the junction of cooling disc simultaneously and seals, leads to the recirculated cooling water and reaches the cooling effect. However, the cooling plates directly connected to the two ends of the capacitor externally not only increase the height of the product and occupy too much installation space (such as a matching box), but also have a complex structure, thus causing inconvenience for installation, and the O-ring is easy to lose and leak water under water flow impact for a long time.

Disclosure of Invention

In order to solve the technical problem, the utility model provides a compact water-cooling capacitor, the spatial structure of make full use of condenser under the overall dimension that does not increase the condenser, sends the cooling water to the position nearest from the heat-generating body.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: a compact water-cooled capacitor comprising: the electrode ring group and the cooling disc in the shell body, first end cover and second end cover that set up respectively both ends about the shell body, hold, first end cover and/or the second end cover is located outer tip around the periphery and is equipped with annular mounting groove towards the axis is concave, the cooling disc holds annular mounting groove is interior and encloses and be formed with annular water circulating channel, seted up on the cooling disc communicate in water circulating channel's water inlet and delivery port.

As a further improvement of the present invention, the cooling plate is integrally connected to the first end cap or the second end cap in a welding manner.

As a further improvement of the present invention, the cooling plate is circular ring-shaped, and has a first end portion and a second end portion which are distributed perpendicular to each other, and the first end portion and the second end portion are respectively welded on two inner walls of the annular mounting groove.

As a further improvement of the utility model, the lateral surface of cooling plate does not bulge in the correspondence first end cover or the terminal surface and the outer periphery place face of second end cover.

As a further improvement, the first end cover with the second end cover all is provided with bellied flange portion, and two along outer terminal surface the external diameter of flange portion is less than the correspondence respectively the first end cover with the external diameter of second end cover and then the outside of flange portion forms the annular mounting groove.

As a further improvement of the utility model, the cooling plate is located the water inlet with be provided with the baffle along the inner wall between the delivery port, the baffle extends to in the hydrologic cycle passageway and with correspond first end cover or leave the clearance between the second end cover.

As a further improvement of the present invention, the electric vehicle further comprises an rotor disc and a transmission assembly accommodated in the outer shell, wherein the electrode ring set comprises a rotor electrode and a stator electrode, the stator electrode is fixedly connected to the top of the second end cover, and the rotor electrode is fixedly connected to the bottom of the rotor disc and coupled to the stator electrode; the transmission assembly is connected with the rotor disc and used for driving the rotor electrode and the stator electrode to approach or move away from each other.

As a further improvement of the utility model, the water circulation device further comprises a first corrugated pipe, one end of the first corrugated pipe is fixedly connected to the rotor disc, and the other end of the first corrugated pipe is fixedly connected to the first end cover and is positioned at the other side of the first end cover, and the water circulation channels are oppositely arranged.

As a further improvement of the utility model, the utility model also comprises a second corrugated pipe, the both ends of second corrugated pipe are fixed connection respectively the rotor disc with on the first end cover, just the second corrugated pipe sets up in the first corrugated pipe.

As a further improvement of the present invention, the electrode ring set includes a first electrode and a second electrode, the first electrode is fixedly connected to the bottom of the first end cap, and the second electrode is fixedly connected to the top of the second end cap and coupled to the first electrode.

The utility model has the advantages that:

1. the utility model provides a compact water-cooling capacitor, through install the cooling pan on the first end cover at condenser both ends and second end cover respectively, the cooling pan is the ring shape, is disposed in the annular mounting groove that sets up on first end cover and second end cover, and is formed with the water circulation passageway, this structural design has fully utilized the spatial structure of condenser, under the size that does not increase the condenser, realize the water circulation cooling, the user can use in original matching case, need not to reserve more installation spaces for the condenser, overall structure is compacter and succinct;

2. the two cooling discs are respectively and integrally connected with the first end cover and the second end cover in a welding mode, and fasteners such as O-shaped rings, bolts and the like are omitted, so that the risk of performance reduction of products caused by aging of parts is effectively avoided;

3. the design of a double-corrugated pipe structure is adopted, and the second corrugated pipe is made of stainless steel, so that a vacuum cavity in the outer shell can be effectively maintained, and the torque caused by atmospheric pressure difference can be reduced; the first corrugated pipe is made of high-temperature-resistant high-conductivity copper alloy, so that high conductivity and elasticity can be kept under a radio frequency condition, and heat generation can be reduced;

4. the water flow position of the cooling disc is arranged at the position closest to the first corrugated pipe, so that the hottest part is directly cooled, heat overflow is avoided, and the cooling efficiency is better.

Drawings

Fig. 1 is a perspective view of a first embodiment of a compact water-cooled capacitor according to the present invention;

fig. 2 is a cross-sectional view of a first embodiment of the compact water-cooled capacitor of the present invention;

FIG. 3 is a perspective view of a cooling plate according to a first embodiment of the compact water-cooled capacitor of the present invention;

FIG. 4 is a cross-sectional view of a cooling plate according to a first embodiment of the compact water-cooled capacitor of the present invention;

fig. 5 is a perspective view of a second embodiment of the compact water-cooled capacitor of the present invention;

fig. 6 is a sectional view of a second embodiment of the compact water-cooled capacitor of the present invention.

The following description is made with reference to the accompanying drawings:

1. an outer housing; 2. a first end cap; 3. a mover electrode; 4. a water circulation channel;

5. a cooling pan; 501. a water inlet; 502. a water outlet; 503. a first end portion; 504. a second end portion; 505. a partition plate; 6. a second bellows; 7. a first bellows; 8. a stator electrode; 9. a second end cap; 10. a flange portion; 11. a pull rod; 12. a guide sleeve; 13. positioning a nut; 14. a sleeve; 15. a screw; 16. an animal disc; 17. a first electrode; 18. a second electrode.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

Example one

Referring to fig. 1 to 4, the present invention provides a compact water-cooled capacitor, which is a variable capacitor, including: the electrode ring assembly comprises an outer shell 1, a first end cover 2, a second end cover 9, an electrode ring set, a transmission assembly, a rotor disc 16 and two cooling discs 5. The outer shell 1 is a ceramic tube, has high insulating property and high dielectric withstand voltage, and ensures a high vacuum environment in the capacitor. The upper and lower both ends of shell body 1 all weld the clamping ring, and first end cap 2 adopts the sealed fixed connection of welding mode to circle at the clamping ring that is located upper portion, and the sealed fixed connection of second end cap 9 adopts the welding mode to circle at the clamping ring that is located the lower part.

The electrode ring group comprises a rotor electrode 3 and a stator electrode 8, and the rotor electrode 3 and the stator electrode 8 are formed by a plurality of electrode rings which are mutually nested. The second end cover 9 is used as a stator disc, the stator electrode 8 is fixedly connected to the upper end face of the second end cover 9, the rotor disc 16 is movably arranged in the cavity of the outer shell 1 and located above the stator electrode 8, the rotor electrode 3 is fixedly connected to the lower end face of the rotor disc 16 and coupled with the stator electrode 8, and the coupling part of the rotor electrode 3 and the stator electrode 8 is a charge storage unit composed of two groups of spiral electrode belts.

The transmission assembly is arranged on the first end cover 2 and extends into the cavity of the outer shell 1 to be connected with the rotor disc 16. Specifically, the transmission assembly comprises a pull rod 11, a guide sleeve 12, a positioning nut 13, a sleeve 14 and a screw rod 15. The guide sleeve 12 is welded on the first end cover 2, the lower end of the guide sleeve extends into the outer shell 1, the sleeve 14 is fixed at the upper end of the guide sleeve 12, and a stroke limiting cavity is formed between the guide sleeve and the sleeve. The pull rod 11 is sleeved in the guide sleeve 12 in a sliding mode, the lower end of the pull rod is fixedly connected with a rotor disc of the rotor electrode 3, and the positioning nut 13 is fixed at the upper end of the pull rod 11 and located in the stroke limiting cavity. The screw 15 is rotatably inserted through the sleeve 14 through a bearing and is in driving connection with the positioning nut 13. The external power device drives the screw rod 15 to rotate, the positioning nut 13 converts the rotary motion into linear motion, and the pull rod 11 pulls the rotor disc 16 to drive the rotor electrode 3 to move up and down along with the stator electrode 8 to approach or separate from the stator electrode 8, so that the coupling length between the rotor electrode 3 and the stator electrode 8 is changed, and the capacitance value of the capacitor is adjusted.

Referring to fig. 2 and 3, the first and second end caps 2 and 9 are recessed at the outer ends about the periphery toward the axis with annular mounting grooves. Specifically, first end cover 2 upwards extends along the upper end and is formed with annular flange portion 10, and this flange portion 10 and first end cover 2 structure as an organic whole, and the external diameter of flange portion 10 is less than the external diameter of first end cover 2, and then forms annular mounting groove between the outside of flange portion 10 and first end cover 2. The second end cap 9 is also provided with an annular flange portion 10 along the lower end surface, the flange portion 10 is formed by welding a separate flange on the lower end surface of the second end cap 9, the outer diameter of the flange portion 10 is smaller than that of the second end cap 9, and an annular mounting groove is further formed between the outer side of the flange portion 10 and the second end cap 9. The upper flange portion 10 and the lower flange portion 10 are both used for being fixedly connected with an external matching box, and therefore installation of the capacitor is achieved. Two cooling trays 5 are fixed respectively and are held in two upper and lower annular mounting grooves to surround respectively at the upper and lower both ends of condenser and be formed with two annular hydrologic cycle passageways 4, all set up the water inlet 501 and the delivery port 502 that communicate in the hydrologic cycle passageway 4 that corresponds on the cooling tray 5, let in the cooling water by water inlet 501, the hydrologic cycle passageway 4 of flowing through reaches the circulative cooling effect by delivery port 502 outflow again.

In this embodiment, the two cooling plates 5 are fixedly connected with the first end cap 2 and the second end cap 9 respectively as a whole by welding. Specifically, the cooling plate 5 is circular, and the cross section of the cooling plate 5 may be circular arc-shaped, right-angle-shaped, and the like, in this embodiment, the cooling plate 5 preferably has a right-angle-shaped cross section, and has a first end 503 and a second end 504 which are distributed perpendicular to each other, the first end 503 and the second end 504 are both provided with annular grooves for accommodating solder wires on end surfaces, and the first end 503 and the second end 504 are respectively welded on two inner walls of the annular mounting groove perpendicular to each other in a sealing manner; the upper end surface of the cooling plate 5 located at the upper part does not protrude from the surface where the upper end surface of the flange part 10 of the first end cover 2 is located, and the outer circumferential surface of the cooling plate 5 does not protrude from the surface where the outer circumferential surface of the first end cover 2 is located, the lower end surface of the cooling plate 5 located at the lower part does not protrude from the surface where the lower end surface of the flange part 10 of the second end cover 9 is located, and the outer circumferential surface of the cooling plate 5 does not protrude from the surface where the outer circumferential surface of the second end cover 9 is located. By adopting the technical scheme, the cooling disc 5 is integrally connected with the capacitor in a welding mode, so that the whole structure is more compact and simpler, the use of fasteners such as O-shaped rings, bolts and the like is eliminated, the risk of product performance reduction caused by aging of parts is effectively avoided, the space structure of the capacitor is fully utilized, water circulation cooling is realized without increasing the size of the capacitor, a user can use the capacitor in an original matching box without reserving more installation space for the capacitor,

in addition, the capacitor adopting the structural design can also provide more choices for users, when the capacitor is applied to a large-current working condition such as 200A-400A, the product has large heat under the radio frequency condition, and the users can simultaneously feed cooling water to the upper water circulation channel 4 and the lower water circulation channel 4 for cooling; when the cooling water circulation cooling device is applied to the current working condition of 200A, the heat productivity is relatively small, and a user can choose to feed cooling water to one of the water circulation channels 4 for cooling; when the device is applied to a working condition with smaller current, a user can not feed cooling water, and further the device has a wider application range.

Referring to fig. 3 and 4, the cooling plate 5 is provided with a partition 505 along the inner wall between the water inlet 501 and the water outlet 502, the partition 505 extends into the water circulation channel 4 to block the flow of water between the water inlet 501 and the water outlet 502, so that the cooling water flowing from the water inlet 501 can flow around the water circulation channel 4 and then flow out from the water outlet 502.

A gap is reserved between the bottom of the partition 505 of the upper cooling plate 5 and the top surface of the first end cap 2, a gap is also reserved between the top of the partition 505 of the lower cooling plate 5 and the bottom surface of the second end cap 9, and by the arrangement of the gap, part of the cooling water flowing in from the water inlet 501 flows between the water inlet 501 and the water outlet 502 through the gap, so that the cooling water can flow in the whole water circulation channel 4, and the cooling effect is improved.

Referring to fig. 2, the compact water-cooled capacitor of the present application further includes a first corrugated tube 7 and a second corrugated tube 6, two ends of the second corrugated tube 6 are respectively sealed and welded to the first end cap 2 and the rotor disc 16 and are sleeved on the outer side of the guide sleeve 12, two ends of the first corrugated tube 7 are also respectively sealed and welded to the first end cap 2 and the rotor disc 16, and the first corrugated tube 7 is coaxially sleeved on the outer side of the second corrugated tube 6. In the embodiment, the second corrugated pipe 6 is made of stainless steel, so that a vacuum cavity in the outer shell 1 can be effectively maintained, and the torque caused by the atmospheric pressure difference can be reduced; the first corrugated pipe 7 is made of high-temperature-resistant high-conductivity copper alloy, can keep high conductivity and elasticity under the radio frequency condition, and can reduce heat generation. The junction of one side of the first end cap 2 and the first bellows 7 is formed with a contact surface which is disposed opposite to the water circulation passage 4 at the other side of the first end cap 2. The first corrugated pipe 7 is a main heating body of the capacitor in a conductor under a radio frequency condition, and the water flow position of the cooling disc 5 is arranged at the position closest to the first corrugated pipe 7 to directly cool the hottest part, so that heat overflow is avoided, and the cooling efficiency is better.

As a preferred embodiment of the present application, according to the use requirements of different users, only one cooling plate 5 may be set, and only one cooling plate is welded to the first end cap 2 or only the second end cap 9, so that only one end of the capacitor is cooled by circulating water.

By adopting the technical scheme, the rotor electrode 3 and the stator electrode 8 are respectively welded on the rotor disc 16 and the second end cover 9 firstly, and then are integrally sealed and welded with other parts in the vacuum furnace for forming, so that an exhaust pipe and a series of argon arc welding processes are omitted, the surface oxidation of the electrodes is avoided, acid pickling and high-temperature exhaust are not needed after integral welding, the production flow is greatly shortened, the production cost is reduced, and the production benefit is improved.

Example two

Referring to fig. 5 and fig. 6, the difference between the present embodiment and the first embodiment is:

the compact water-cooled capacitor is a fixed capacitor, the electrode ring group comprises a first electrode 17 and a second electrode 18, the first end cover 2 is used as a first electrode tray and is hermetically welded at the upper end of the outer shell 1, and the first electrode 17 is welded at the bottom of the first end cover 2; the second end cap 9 is used as a second electrode tray, hermetically welded to the lower end of the outer case 1, and a second electrode 18 is welded to the top of the second end cap 9 and coupled to the first electrode 17.

The flange portions 10 of the first end cap 2 and the second end cap 9 are each formed by an annular boss extending integrally from the end face thereof, and an annular mounting groove for mounting the cooling plate 5 is also formed in each of the first end cap 2 and the second end cap 9.

Similarly, according to different users' user demands, the cooling plate 5 can be only set to one, and only welded on the first end cover 2 or only welded on the second end cover 9, so that only one end of the capacitor is cooled by circulating water.

In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. A compact water-cooled capacitor comprising: the electrode ring group in the shell body (1), set up respectively first end cap (2) and second end cap (9) at both ends about shell body (1) and hold, its characterized in that still includes cooling plate (5), first end cap (2) and/or second end cap (9) are located outer tip around the periphery and are equipped with the annular mounting groove towards the axis is concave, cooling plate (5) hold annular mounting groove is interior and close to enclose and be formed with annular water circulating channel (4), seted up on cooling plate (5) communicate in water inlet (501) and delivery port (502) of water circulating channel (4).

2. The compact water-cooled capacitor of claim 1, wherein: the cooling disc (5) is fixedly connected with the corresponding first end cover (2) or the second end cover (9) into a whole in a welding mode.

3. The compact water-cooled capacitor of claim 2, wherein: the cooling disc (5) is annular and is provided with a first end part (503) and a second end part (504) which are vertically distributed, and the first end part (503) and the second end part (504) are respectively welded on two inner walls of the annular mounting groove.

4. The compact water-cooled capacitor of claim 1, wherein: the outer side face of the cooling disc (5) does not protrude out of the corresponding end face and the outer circumferential face of the first end cover (2) or the second end cover (9).

5. The compact water-cooled capacitor of claim 1, wherein: the first end cover (2) and the second end cover (9) are provided with raised flange parts (10) along the outer end faces, and the outer diameters of the two flange parts (10) are respectively smaller than the outer diameters of the corresponding first end cover (2) and the second end cover (9) so as to form the annular mounting grooves on the outer sides of the flange parts (10).

6. The compact water-cooled capacitor of claim 1, wherein: the cooling disc (5) is located between the water inlet (501) and the water outlet (502) and is provided with a partition plate (505) along the inner wall, the partition plate (505) extends into the water circulation channel (4) and a gap is reserved between the partition plate and the corresponding first end cover (2) or second end cover (9).

7. The compact water-cooled capacitor of claim 1, wherein: the motor disc (16) and the transmission assembly are accommodated in the outer shell (1), the electrode ring set comprises a rotor electrode (3) and a stator electrode (8), the stator electrode (8) is fixedly connected to the top of the second end cover (9), and the rotor electrode (3) is fixedly connected to the bottom of the motor disc (16) and coupled with the stator electrode (8); the transmission assembly is connected with the rotor disc (16) and used for driving the rotor electrode (3) and the stator electrode (8) to approach or separate from each other.

8. The compact water-cooled capacitor of claim 7, wherein: the water circulation device is characterized by further comprising a first corrugated pipe (7), wherein one end of the first corrugated pipe (7) is fixedly connected to the rotor disc (16), and the other end of the first corrugated pipe (7) is fixedly connected to the first end cover (2) and is opposite to the water circulation channel (4) located on the other side of the first end cover (2).

9. The compact water-cooled capacitor of claim 8, wherein: the corrugated pipe is characterized by further comprising a second corrugated pipe (6), wherein two ends of the second corrugated pipe (6) are fixedly connected to the rotor disc (16) and the first end cover (2) respectively, and the second corrugated pipe (6) is arranged in the first corrugated pipe (7).

10. The compact water-cooled capacitor of claim 1, wherein: the electrode ring set comprises a first electrode (17) and a second electrode (18), the first electrode (17) is fixedly connected to the bottom of the first end cover (2), and the second electrode (18) is fixedly connected to the top of the second end cover (9) and coupled with the first electrode (17).

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