CN114300999A - Medium Voltage Fully Sealed Dry Air Insulated Ring Main Unit - Google Patents

Abstract

The utility model discloses a medium-pressure full-sealed dry air insulation ring main unit, which comprises a stainless steel single cabinet body and an insulation inflation cabinet, wherein transmission screw rods are arranged in two bearing blocks, the lower ends of the transmission screw rods are connected with the inner bottom wall of the groove through bearings, the upper ends of the transmission screw rods penetrate through the top of the stainless steel single cabinet body and are provided with motors, rectangular frame plates are vertically and symmetrically screwed between the two transmission screw rods by taking the bearing seat as the center, and four inner side walls of each rectangular frame plate are provided with lapping tables, the four lapping tables are provided with placing clapboards through bolts, the motor drives the two transmission screw rods to rotate, so that the transmission screw rods can be driven to rotate, and the two rectangular frame plates in threaded connection with the transmission screw rods can realize up-and-down movement, so that the sizes of the inner spaces of the composite switch chamber, the cable bin and the combined electrical appliance bin can be adjusted, and the combined electrical appliance bin can be adapted to be used for containing electrical appliances with different sizes.

Description

Medium Voltage Fully Sealed Dry Air Insulated Ring Main Unit

technical field

The invention relates to the technical field of ring network cabinets, in particular to a medium-voltage fully-sealed dry air-insulated ring network cabinet.

Background technique

Ring network cabinet is a group of high-voltage switchgear installed in a steel metal cabinet or made into an assembled spaced ring network power supply unit. It has the advantages of simple structure, small size, low price, can improve power supply parameters and performance, and power supply safety. ; Mainly include two categories of gas-insulated ring network cabinets and solid-insulated ring network cabinets.

The gas-insulated ring main unit is compact in structure, small in size and mature in technology, but sulfur hexafluoride gas is usually used as the insulating medium, and sulfur hexafluoride is listed as one of the six gases with greenhouse effect, and it is used in arc discharge. Afterwards, the sulfur hexafluoride gas decomposes into toxic low-fluoride gas. Therefore, reducing or even avoiding the use of sulfur hexafluoride gas has become an inevitable trend in the development of the power distribution switchgear manufacturing industry. At the same time, traditional ring main units often have poor heat dissipation effects, which are easy to cause damage to electronic components, and the space utilization rate is not high. , can not adapt to the placement of electrical appliances of different sizes.

According to the patent CN202022740687.6, the new environmentally friendly gas-insulated fully sealed ring network cabinet includes the main body of the ring network cabinet, the wiring room, the partition board, the mechanism room, the ventilation board, the dehumidifier, the upper cabinet door, the lower cabinet door and the spacer Adjustment device, the main body of the ring main unit is arranged in a hollow cavity structure, the wiring room is arranged inside the main body of the ring main unit, the partition plate is horizontally arranged in the center of the main body of the ring main unit, and the mechanism room is arranged in the main body of the ring main unit. On the partition plate, the ventilation board is arranged at the bottom of the main body of the ring main unit, one end of the dehumidifier is connected to the wiring room, the other end of the dehumidifier is connected to the ventilation plate, and the upper cabinet door is arranged on the ring main unit The upper end of the side wall of the main body, the lower cabinet door is arranged on the lower end of the side wall of the ring main unit, and the distance adjusting device is arranged on the partition plate. The utility model belongs to the technical field of ring network cabinets, and specifically refers to adjusting the distance in a mechanism room through a distance adjustment component.

The above case can only adjust the spacing in the mechanism room, and the space inside other chambers cannot be adjusted, and the rotating gear is driven to rotate by the servo motor, and the rotating gear is meshed with the rack, so it can drive the lifting column to rise and fall. When lifting, the lifting table can be lifted up and down through the connecting block, and the lifting table slides on the slide rail through the slider to realize the adjustment of the distance in the mechanism room. Therefore, it is necessary to design medium-voltage fully-sealed dry air-insulated ring network cabinets to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a medium-voltage fully-sealed dry air-insulated ring network cabinet, which can adjust the size of the internal space of the compound switch room, the cable compartment and the combined electrical compartment, and solves the problem that the space inside other chambers cannot be adjusted.

In order to achieve the above purpose, the present invention provides the following technical solutions: a medium-voltage fully sealed dry air insulated ring network cabinet, comprising a stainless steel single cabinet body and an insulating gas-filled cabinet, the insulating gas-filled cabinet is installed on the rear step of the stainless steel single cabinet body, The two inner walls of the stainless steel single cabinet are symmetrically provided with slots, bearing seats are installed in the middle of the two slots, and a transmission screw rod is installed in the two bearing seats, and the lower end of the transmission screw rod passes through the bearing. Connected with the inner bottom wall of the slot, the upper end of the drive screw penetrates the top of the stainless steel single cabinet and is installed with a motor, the thread rotation direction of the drive screw at the upper end of the bearing seat is left-handed thread, and the lower end of the bearing seat drives the screw The direction of the thread is right-handed thread, the transmission screw is provided with two, and a rectangular frame plate is symmetrically screwed up and down with the bearing seat as the center between the two transmission screws, and each rectangular frame plate has four The inner side walls are all provided with lap joints, and four lap joints are provided with placing partitions through bolts.

Optionally, there are threaded posts at the top four corners of each of the placement partitions, L-shaped support plates are sleeved between the front and rear threaded posts, and two threaded posts are installed on the top of each placement partition. There are L-shaped support plates, each threaded column is screwed with a locking nut for fixing the L-shaped support plate, the inner side wall of each L-shaped support plate is symmetrically provided with a support shaft in the front and rear, and the support shaft is provided with a roller .

Optionally, a cylinder is installed symmetrically on the front and rear side walls of each of the rectangular frame plates, a number of limit circular holes are equidistantly opened on the two side walls of the slot, and the telescopic rod of the cylinder is inserted into the limit. inside the hole.

Optionally, the two-layer rectangular frame plate divides the internal cavity of the stainless steel single cabinet into three chambers, the chamber above the partitions on the upper layer is a composite switch room, and the chambers below the partitions on the lower layer are cables. The compartment between the two layers of partitions is a combined electrical compartment.

Optionally, vertical steel plates are installed on the two inner walls of the cable compartment through bolts, installation holes are opened at equal distances on the vertical steel plates, and a cable supporting horizontal steel plate is arranged on the rear side between the two vertical steel plates. Both ends of the front of the support horizontal steel plate are provided with threaded inserts penetrating the installation holes, the threaded inserts are screwed with locking nuts for fixing the cable support horizontal steel plate, and the cable support horizontal steel plate is also equidistant. There are several mounting holes.

Optionally, cabinet doors are hinged on the fronts of the composite switch room, the cable compartment and the combined electrical compartment, the cabinet doors of the cable compartment are provided with openings, and the four inner corners of the openings are provided with installations. Blocks, and a heat dissipation window is installed between the four installation blocks through screws.

Optionally, the side wall of the insulating gas-filled cabinet is provided with three busbar expansion ports equidistantly, and the outer wall of each busbar expansion port is evenly surrounded with a number of inner screw holes, and the busbar expansion port is inserted into the busbar. A connector, the busbar connector is sleeved with a gasket contacting the outer wall of the busbar expansion port, and a plurality of fastening screws screwed with the inner screw holes are arranged around the busbar connector.

Optionally, one side wall of the insulating gas-filled cabinet is installed with two guide rails located below the busbar expansion opening, and the other side wall of the insulating gas-filled cabinet is installed with a guide rail that cooperates with the guide rails. .

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The medium-voltage fully-sealed dry air-insulated ring network cabinet of the present invention drives the two driving screw rods to rotate by starting the motors respectively, so the driving screw rods can be driven to rotate, so the two rectangular frame plates screwed with the driving screw rods can be To achieve up and down movement, because the drive screw is centered on the bearing seat, the outer wall of the upper end is provided with left-handed threads, and the outer wall of the lower end is provided with right-handed threads, so the moving directions of the two rectangular frame plates are opposite, one moves upward, The other one moves downward, so the size of the inner space of the compound switch room, the cable compartment and the combined electrical compartment can be adjusted, so that it can be adapted to install electrical components of different sizes.

2. The setting of the partition plate and the roller in the present invention is convenient to push the assembled switch components and combined electrical appliances into the composite switch room and the combined electrical appliance compartment, so that they are assembled into the stainless steel single cabinet after the whole assembly, so as to facilitate the later maintenance. .

3. The busbar expansion ports and busbar connectors of the present invention are used to install the expansion busbars, so as to facilitate the assembly of two stainless steel single cabinets together. The setting of the inner screw holes is matched with the use of fastening screws to realize the busbar connector. installation.

Fourth, the combined use of the guide chute and the guide rail of the present invention makes the assembly of the two stainless steel single cabinets more stable.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Figure 2 is a schematic diagram of the internal structure of the present invention

Fig. 3 is a side view structural schematic diagram of the present invention;

Fig. 4 is the top view structure schematic diagram of the rectangular frame plate and the placing clapboard of the present invention;

5 is a schematic diagram of the connection structure of the insulating gas-filled cabinet of the present invention;

FIG. 6 is a schematic view of the internal side structure of the stainless steel single cabinet of the present invention;

FIG. 7 is an enlarged schematic view of the structure of the position A in FIG. 1 of the present invention.

In the picture: 1-stainless steel single cabinet, 2-insulated gas-filled cabinet, 3-slotted, 4-bearing seat, 5-drive screw, 6-motor, 7-rectangular frame plate, 8-joint table, 9- Place the partition, 10-threaded column, 11-L-shaped support plate, 12-support shaft, 13-roller, 14-limit round hole, 15-cylinder, 16-composite switch room; 17-guide chute, 18- Cable compartment, 19-combination electrical compartment, 20-vertical steel plate, 21-busbar expansion port, 22-cable support horizontal steel plate, 23-cabinet door, 24-opening, 25-installation block, 26-cooling window, 27-busbar expansion port, 28-inner screw hole, 29-busbar connector, 30-gasket, 31-guide rail.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1:

Referring to FIGS. 1 to 7 , this embodiment provides a medium-voltage fully sealed dry air insulated ring main unit, including a stainless steel single cabinet 1 and an insulating gas-filled cabinet 2 , and the insulating gas-filled cabinet 2 is installed behind the stainless steel single cabinet 1 . On the side steps, two inner walls of the stainless steel single cabinet 1 are symmetrically provided with slots 3 , bearing seats 4 are installed in the middle of the two slots 3 , and drive screw rods 5 are installed in the two bearing seats 4 , the lower end of the drive screw 5 is connected with the inner bottom wall of the slot 3 through a bearing, the upper end of the drive screw 5 penetrates the top of the stainless steel single cabinet 1 and is installed with a motor 6, and the upper end of the bearing seat 4 drives the wire The thread rotation direction on the rod 5 is left-handed thread, and the thread rotation direction on the transmission screw rod 5 at the lower end of the bearing seat 4 is right-handed thread. The seat 4 is symmetrically screwed up and down with a rectangular frame plate 7 in the center, and the four inner side walls of each rectangular frame plate 7 are provided with a lap joint 8, and the four lap joints 8 are installed with placing partitions 9 through bolts, The two layers of the rectangular frame plate 7 divide the internal cavity of the stainless steel single cabinet 1 into three chambers, the chamber above the partition plate 9 on the upper layer is the composite switch room 16, and the chamber under the partition plate 9 on the lower layer is The cable compartment 18 and the chamber between the two layers of partitions 9 are combined electrical compartments 19 .

Specifically, threaded posts 10 are provided at the top four corner positions of each of the placement partitions 9, and L-shaped support plates 11 are sleeved between the front and rear aligned threaded posts 10. Two L-shaped support plates 11 are installed on the top, and each threaded column 10 is screwed with a locking nut for fixing the L-shaped support plate 11. The inner side wall of each L-shaped support plate 11 is symmetrically provided with a support shaft 12. , the support shaft 12 is provided with a roller 13, by inserting the partition plate 9 on the four threaded columns 10 and locking it with a locking nut, it is convenient to install the partition plate 9 on the rectangular frame plate 7, by setting the partition plate 9 The placement partition 9 is used to support switch assemblies and combination appliances.

Specifically, a cylinder 15 is installed symmetrically on the front and rear side walls of each of the rectangular frame plates 7 , and a plurality of limit circular holes 14 are equidistantly opened on both side walls of the slot 3 . The telescopic rods of the cylinder 15 It is inserted into the limiting circular hole 14. After the position of the rectangular frame plate 7 is adjusted, the telescopic rod is driven into the limiting circular hole 14 by activating the cylinder 15, thereby realizing the fixing of the rectangular frame plate 7 and avoiding the screw connection. Sliding phenomenon occurs.

Specifically, vertical steel plates 20 are installed on the two inner walls of the cable compartment 18 through bolts, mounting holes 21 are equidistantly opened on the vertical steel plates 20 , and a cable supporting horizontal steel plate is arranged on the rear side between the two vertical steel plates 20 22. Both ends of the front of the horizontal steel plate 22 for supporting cables are provided with threaded inserts penetrating the mounting holes 21. The threaded inserts are screwed with locking nuts for fixing the horizontal steel plates 22 for supporting the cables. The supporting horizontal steel plate 22 is also provided with a plurality of installation holes 21 at equal distances. The vertical steel plate 20, the cable supporting horizontal steel plate 22 and the installation holes 21 are arranged to facilitate the supporting and fixing of the cables.

Specifically, cabinet doors 23 are hinged on the fronts of the composite switch room 16 , the cable compartment 18 and the combined electrical appliance compartment 19 . The cabinet door 23 of the cable compartment 18 is provided with an opening 24 . There are mounting blocks 25 on the corners, and heat dissipation windows 26 are installed between the four mounting blocks 25 by screws. It is convenient to disassemble and clean the heat dissipation window 26.

Specifically, the side wall of the insulating gas-filled cabinet 2 is provided with three busbar expansion ports 27 at equal distances, and the outer wall of each busbar expansion port 27 is evenly surrounded with a number of inner screw holes 28. The busbar expansion ports 27 A busbar connector 29 is inserted inside, the busbar connector 29 is sleeved with a gasket 30 that is in contact with the outer wall of the busbar expansion port 27, and the busbar connector 29 is surrounded with a number of internal screw holes 28. By inserting the busbar connector 29 into the busbar expansion port 27, and then screwing several tightening screws into the inner screw holes 28, the installation of the busbar connector 29 is realized, and the busbar is connected. The arrangement of the device 29 is used to realize the expansion connection of the busbar, thereby facilitating the assembly of the two stainless steel single cabinets 1. The arrangement of the sealing gasket 30 avoids the phenomenon of air leakage at the connection part, and further improves the insulating effect of the insulating gas-filled cabinet 2.

Embodiment 2 is different from Embodiment 1 in that:

Specifically, one side wall of the insulating inflatable cabinet 2 is installed with two guide rails 31 located below the busbar expansion port 27 , and the other side wall of the insulating inflatable cabinet 2 is installed with the guide rails 31 to cooperate with The combined use of the guide chute 17, the guide chute 17 and the guide rail 31 make the assembly of the two stainless steel single cabinets 1 more stable, and it is convenient to connect the two insulating gas-filled cabinets 2 together.

Working principle: The medium-voltage fully-sealed dry air-insulated ring network cabinet drives the two transmission screw rods 5 to rotate by starting the motor 6 respectively, so the transmission screw rod 5 can be driven to rotate. The rectangular frame plate 7 can move up and down. Since the drive screw 5 is centered on the bearing seat 4, left-handed threads are arranged on the outer wall of the upper end, and right-handed threads are arranged on the outer wall of the lower end, so the moving directions of the two rectangular frame plates 7 are On the contrary, one moves upwards and the other moves downwards, so the size of the internal space of the compound switch room 16, the cable compartment 18 and the combined electrical compartment 19 can be adjusted to accommodate electrical components of different sizes.

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

Claims (8)

1. Well voltage totally enclosed dry air insulation looped netowrk cabinet, aerify cabinet (2), its characterized in that including stainless steel single cabinet body (1) and insulation: the insulating gas-filled cabinet (2) is installed on the rear side step of the stainless steel single cabinet body (1), two inner wall symmetries of the stainless steel single cabinet body (1) are equipped with fluting (3), two bearing seats (4) are all installed at the middle part of fluting (3), install transmission lead screw (5) in two bearing seats (4), the lower extreme of transmission lead screw (5) is connected with the inner bottom wall of fluting (3) through the bearing, the top of the stainless steel single cabinet body (1) is run through and motor (6) is installed to the upper end of transmission lead screw (5), the screw thread handedness on transmission lead screw (5) on bearing seat (4) upper end is left-handed thread, the screw thread handedness on transmission lead screw (5) on bearing seat (4) lower extreme is right-handed thread, transmission lead screw (5) are equipped with two, and the bearing seat (4) has rectangular frame board (7) as central up-down symmetry spiro union between two transmission lead screws (5), and four inside walls of each rectangular frame plate (7) are provided with overlapping platforms (8), and the four overlapping platforms (8) are provided with placing partition plates (9) through bolts.

2. The medium-voltage totally-enclosed dry air insulation ring main unit according to claim 1, wherein: every four corner position departments in top of placing baffle (9) all are equipped with screw thread post (10), have cup jointed L shape backup pad (11) between screw thread post (10) that the front and back was aligned, and two L shape backup pads (11) are installed at every top of placing baffle (9), and the spiro union has the lock nut who is used for fixing L shape backup pad (11) on every screw thread post (10), and the symmetry is equipped with back shaft (12) around the inside wall of every L shape backup pad (11), be equipped with gyro wheel (13) on back shaft (12).

3. The medium-voltage totally-enclosed dry air insulation ring main unit according to claim 2, wherein: every cylinder (15) are installed to the front and back lateral wall bilateral symmetry of rectangle frame board (7), a plurality of spacing round holes (14) have been seted up to the both sides wall equidistance of fluting (3), the telescopic link of cylinder (15) inserts in spacing round hole (14).

4. The medium-pressure totally enclosed dry air insulated ring main unit according to any one of claims 1 to 3, wherein: two-layer rectangle frame plate (7) has divided into three cavity to the inside cavity of the stainless steel single cabinet body (1), and the cavity that baffle (9) top was placed to the upper strata is composite switch room (16), and the cavity that baffle (9) below was placed to the lower floor is cable compartment (18), and the cavity that two-layer between placing baffle (9) is combined electrical apparatus storehouse (19).

5. The medium-voltage full-sealed dry air insulation ring main unit according to claim 4, wherein: two inner walls of cable storehouse (18) are installed through the bolt and are erected steel sheet (20), erect steel sheet (20) equidistance and seted up mounting hole (21), the rear side is equipped with horizontal steel sheet (22) of cable support between two perpendicular steel sheets (20), the positive both ends of the horizontal steel sheet (22) of cable support all are equipped with the screw thread post of inserting that runs through mounting hole (21), the spiro union has the lock nut who is used for fixing the horizontal steel sheet (22) of cable support on the screw thread post of inserting, also equidistance is equipped with a plurality of mounting holes (21) on the horizontal steel sheet (22) of cable support.

6. The medium-voltage full-sealed dry air insulation ring main unit according to claim 4, wherein: the front of combination switch room (16), cable storehouse (18) and combined electrical apparatus storehouse (19) all articulates there is cabinet door (23), open-ended (24) have been seted up on cabinet door (23) in cable storehouse (18), all be equipped with on four interior corners of opening (24) installation piece (25), and install heat dissipation window (26) through the screw between four installation pieces (25).

7. The medium-voltage totally-enclosed dry air insulation ring main unit according to claim 1, wherein: three generating line expansion mouth (27) have been seted up to the lateral wall equidistance of insulating gas-filled cabinet (2), and the outer wall of every generating line expansion mouth (27) evenly encircles and be equipped with a plurality of inside screw hole (28), it has bus connector (29) to peg graft in generating line expansion mouth (27), the sealed pad (30) that has cup jointed generating line expansion mouth (27) outer wall and contact on bus connector (29), what encircle on bus connector (29) is equipped with a plurality of and the fastening screw of inside screw hole (28) looks spiro union.

8. The medium-voltage totally-enclosed dry air insulation ring main unit according to claim 1, wherein: two guide slide rails (31) below the bus expansion port (27) are installed on one side wall of the insulated inflating cabinet (2), and a guide sliding groove (17) matched with the guide slide rails (31) for use is installed on the other side wall of the insulated inflating cabinet (2).

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