CN219180422U - DC isolating switch - Google Patents

Abstract

The application relates to a direct current isolating switch, which relates to the field of isolating switches and comprises a mounting support, a base and a plurality of sub-shells, wherein the base is fixedly connected with a plurality of static contacts according to the axial lamination shape of the base, the sub-shells are detachably and fixedly connected with movable contacts with the same quantity as the static contacts, the movable contacts are erected above the static contacts, the mounting support is also detachably and fixedly connected with an operating mechanism, and the operating mechanism drives the movable contacts to move towards the direction close to or far away from the static contacts; and arc-extinguishing magnets are arranged on two sides of each group of movable contact pieces and the two sides of each static contact piece and fixedly connected with the base, and arc-extinguishing magnetic fields for increasing the creepage distance are formed between the arc-extinguishing magnets on two sides of each group of movable contact pieces and the static contact pieces. The utility model has the advantages of reduce isolator overall structure, promote isolator's availability.

Description

DC isolating switch

Technical Field

The application relates to the field of isolating switches, in particular to a direct current isolating switch.

Background

When the high-low voltage electrical equipment is overhauled, an isolating switch is often used for isolating and distinguishing the electrified part from the non-electrified part, so that an obvious breaking point is formed, the overhauling equipment is separated from the large electricity input by the power system, and the safety of overhauling staff and electrical equipment is ensured.

The isolating switch comprises a direct current isolating switch, and the direct current isolating switch solves the problems that in a control system of the direct current isolating switch in the prior art, the insulating strength of an insulator is reduced due to the damage of the insulator between a shell of an alternating current motor and a speed reducing mechanism with direct current and other reasons, or an alternating current-direct current short circuit accident is generated when the alternating current motor is in electric leakage.

At present, a common direct current isolating switch mainly comprises a shell, wherein a base is fixedly connected in the shell through a screw, a plurality of static contact pieces are axially arranged on the base, a movable contact piece corresponding to the static contact piece is fixedly connected to the inner side wall of the shell through the screw, an operating mechanism is further arranged in the shell, and an operator can control the braking contact piece to move towards a direction propping against or far away from the static contact piece through the operating mechanism.

In practical use, the inventor finds that, because the common isolating switch is arranged transversely in a modularized manner, in order to reduce the occurrence of arcing between the movable contact and the static contact when the movable contact and the static contact are conducted, the volume of the shell is often required to be increased, a larger cavity is formed to increase the creepage distance, and a larger isolating switch occupies a larger installation space when being put into practical use, so that the cabinet is inconvenient to install in a matched manner, and improvement exists.

Disclosure of Invention

In order to reduce the volume of the isolating switch, the adaptation degree of the supporting installation of isolating switch and the cabinet is promoted, and the application provides a direct current isolating switch.

The application provides a direct current isolator adopts following technical scheme:

the direct current isolating switch comprises a mounting support, wherein a base is fixedly connected in the mounting support, a plurality of static contact pieces are detachably and fixedly connected to the axial direction of the base on the base, a plurality of sub-shells are detachably and fixedly connected to the mounting support in a laminated shape, movable contact pieces are detachably and fixedly connected to the sub-shells, and one end, far away from the shells, of each movable contact piece is arranged towards the static contact piece;

an operating mechanism is detachably and fixedly connected in the mounting support, and the operating mechanism drives a plurality of movable contact pieces to respectively prop against a plurality of static contact pieces;

any one group of movable contact piece with the both sides of static contact piece are provided with the arc extinguishing magnet respectively, the arc extinguishing magnet all with base fixed connection, any one group of movable contact piece with two of static contact piece both sides arc extinguishing magnet forms the magnetic field of arc extinguishing.

Through adopting above-mentioned technical scheme, according to electric power system's needs, can set up multistage sub-casing lamination form and vertically mould piece, the moving contact piece of vertically arranging forms the magnetic field of arc extinction with the arc extinction magnet on quiet contact piece both sides, the electric arc that the magnetic field of arc extinction can change moving contact piece and quiet contact piece and electrically conduct formation, increase creepage distance, when realizing good arc extinguishing effect, can effectively reduce isolator's volume, and then make isolator install in the rack after, only need occupy the inside less installation space of rack, can promote the supporting convenience of installing of operating personnel rack. Meanwhile, according to the requirement of the power system on the current carrying capacity of the isolating switch, the corresponding number of movable contact pieces, static contact pieces and sub-shells can be arranged on the base and the mounting support, so that the usability of the isolating switch is further improved.

Preferably, one end of each of the plurality of sub-shells is uniformly formed and extends to form a first embedded plate, the outer side walls of the end parts of the plurality of sub-shells, which are far away from the first embedded plates, are provided with first embedded grooves, and the sizes of the first embedded grooves are matched with the sizes of the first embedded plates;

the first embedded plate is embedded in the first embedded groove, and the first embedded plate is detachably and fixedly connected with the groove bottom of the first embedded groove.

Through adopting above-mentioned technical scheme, first embedded plate and first gomphosis groove mutually match and use, and operating personnel can avoid comparing before the installation when the installation group isolator, promotes the convenience of operating personnel equipment sub-casing.

Preferably, the bottom of the first embedding groove is fixedly connected with a clamping block, the first embedding plate is provided with a clamping hole matched with the clamping block, and the clamping block is embedded and clamped and fixed in the clamping hole.

Through adopting above-mentioned technical scheme, joint piece and joint hole collocation each other use, restrict the position of first embedded board, can realize the fixed technological effect of mutual joint between two adjacent sub-casings to effectively promote interconnect's area of contact between two adjacent sub-casings, promote the stability of installation between two adjacent sub-casings, effectively reduce the relative displacement between follow-up factor casing and lead to the condition emergence of dislocation between static contact and the movable contact, ensure electric power system's normal operating.

Preferably, the clamping block is provided with an inclined slope, and the inclined slope is arranged along the direction that the first embedding plate slides into the first embedding groove.

Through adopting above-mentioned technical scheme, at the in-process of assembling, operating personnel promotes sub-casing for first embedded plate on the sub-casing slides into first gomphosis groove, and first embedded plate hugs closely the tank bottom in first gomphosis groove, hugs closely slope and slides to first gomphosis inslot, and the joint piece in the first gomphosis inslot is inlayed and is established in the joint downthehole, and operating personnel only need promote the sub-casing, makes first embedded plate slide into first gomphosis groove, can make the joint piece inlay establish downthehole at the joint, promotes the convenience of operating personnel equipment sub-shell.

Preferably, the mounting support comprises a mounting top shell and a mounting bottom shell, the sub-shell adjacent to the mounting top shell is detachably and fixedly connected with the mounting top shell, the sub-shell adjacent to the mounting bottom shell is detachably and fixedly connected with the mounting bottom shell, and a plurality of sub-shells are abutted between the mounting top shell and the mounting bottom shell.

Through adopting above-mentioned technical scheme, installation top shell and installation drain pan collocation each other and use, sub-casing arrange the assembly between installation drain pan and installation top shell, can assemble and form complete isolator, the quantity of sub-casing between installation top shell and the installation top shell can be according to the requirement of electric power system to isolator current-carrying capacity and do corresponding adjustment.

Preferably, the mounting top shell is provided with a second embedding groove, the second embedding groove and the first embedding groove are arranged in the same proportion, and the first embedding plate and the clamping block in the second embedding groove are clamped and fixed.

Through adopting above-mentioned technical scheme, the second gomphosis groove is fixed with first gomphosis board joint, can realize the technical effect of dismantling fixed connection between installation top shell and the sub-casing.

Preferably, the mounting bottom shell is provided with a second embedded plate in an integrated manner, the second embedded plate and the first embedded plate are arranged in the same proportion, and the second embedded plate is fixedly clamped with the clamping block in the first embedded groove.

Through adopting above-mentioned technical scheme, second embedded board and joint piece joint are fixed, can realize the technical effect of dismantling fixed connection between installation drain pan and the sub-casing.

Preferably, the mounting top shell is provided with a mounting column, a plurality of mounting grooves matched with the mounting columns are axially formed in the sub-shells, the mounting columns sequentially penetrate through the mounting grooves and extend to the outermost layer of the outer side of the sub-shells, and one end, away from the mounting top shell, of the mounting support is detachably and fixedly connected with the mounting bottom shell.

Through adopting above-mentioned technical scheme, through the erection column, can be with establishing ties between installation top shell, the installation drain pan and a plurality of sub-shells and assemble together, form complete isolator.

Preferably, a first mounting screw hole is formed in the mounting bottom shell in an erected mode, a mounting bolt is arranged on the mounting bottom shell, the mounting column penetrates through the end portion of the sub-shell to form a second mounting screw hole, the rod portion of the mounting bolt penetrates through the second mounting bolt and extends into the first mounting screw hole, the mounting bolt is in threaded connection with the mounting column, and the mounting bottom shell is abutted to the position between the sub-shell and the bolt portion of the mounting bolt.

Through adopting above-mentioned technical scheme, in the installation bolt runs through the first installation screw and extends into the second installation screw, can realize dismantling fixed connection's technical effect between erection column and the installation drain pan.

Preferably, the mounting top shell is provided with a limit groove, one end of the support, which is close to the mounting top shell, is integrally formed with a limit block, and the limit block is matched with the limit groove;

the bottom of the limiting groove is provided with a through rod hole matched with the mounting column, and the limiting block abuts against the bottom of the limiting groove after the mounting column penetrates through the through rod hole.

Through adopting above-mentioned technical scheme, the stopper on the erection column cooperates with the spacing groove on the installation top shell, can realize dismantling fixed connection's technical effect between installation top shell and the erection column.

In summary, the application includes at least one of the following beneficial technical effects:

1. because the static contact pieces are longitudinally arranged on the base, after the sub-shell is assembled on the mounting support, the movable contact pieces on the sub-shell are in one-to-one correspondence with the static contact pieces to form a corresponding number of longitudinally arranged switch modules, the arc extinguishing magnets arranged on the two sides of the movable contact pieces and the static contact pieces form an arc extinguishing magnetic field, the creepage distance between the movable contact pieces and the static contact pieces is increased by the arc extinguishing magnetic field, the arc extinguishing effect of the isolating switch is ensured, meanwhile, the volume of the isolating switch is effectively reduced, the space required by installing the isolating switch in the cabinet is saved, and the adaptation degree of the isolating switch and the internal mechanism of the cabinet is improved;

2. through the first embedded plate, the first embedded groove, the clamping block and the clamping hole which are arranged on the sub-shell, the sub-shells can be mutually stacked and connected, the clamping block is embedded and clamped in the clamping hole, after the sub-shells are assembled and put into practical use, the sub-shells are not easy to deviate, the compactness is improved, meanwhile, the stability of the structure of the isolating switch is effectively improved, and the condition that a movable contact piece and a static contact piece in the isolating switch are contacted is further reduced;

3. through erection column and mounting bolt, can concatenate installation top shell, installation drain pan and a plurality of sub-casing together, further promote isolator overall structure's compactness, reduce the condition emergence of position offset between the sub-casing, further ensure isolator's stability.

Drawings

Fig. 1 is a schematic diagram mainly used for showing the overall structure of a disconnecting switch according to an embodiment of the present application.

Fig. 2 is a schematic diagram mainly used for showing connection relations among the base, the sub-housing and the mounting support in the embodiment of the application.

Fig. 3 is a schematic diagram mainly used for showing an internal structure of the isolating switch according to the embodiment of the application.

Fig. 4 is a schematic view mainly used for showing detailed structures of the top case and the bottom case.

Fig. 5 is a schematic view mainly used for showing the overall structure of the mounting post according to the embodiment of the present application.

Reference numerals illustrate: 1. a mounting support; 11. a movable contact; 12. installing a top shell; 121. a second fitting groove; 122. a limit groove; 123. a rod passing hole; 13. installing a bottom shell; 131. a second embedded plate; 132. the first installation screw hole; 2. a base; 21. a stationary contact; 22. an arc extinguishing magnet; 3. an operating mechanism; 4. a sub-housing; 41. a first embedded plate; 42. a first fitting groove; 43. a clamping hole; 44. a clamping block; 441. a sloping surface; 45. a mounting groove; 5. a mounting column; 51. the second installation screw hole; 52. a limiting block; 6. and (5) installing a bolt.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

Examples

The embodiment of the application discloses a direct current isolating switch. Referring to fig. 1, 2 and 3, the disconnector mainly comprises a mounting bracket 1. The base 2 is fixedly connected to the inside of the mounting support 1 through screws, the base 2 is approximately in cylindrical arrangement, a plurality of arc extinguishing magnets 22 are fixedly connected to the inside of the mounting support along the axial direction of the base 2 through screws or welding, and an arc extinguishing magnetic field is formed between every two adjacent arc extinguishing magnets 22.

Referring to fig. 2 and 3, in the embodiment of the present application, the number of the arc extinguishing magnets 22 is eight, and a movable contact 11 and a static contact 21 are disposed between every two arc extinguishing magnets 22, and the static contact 21 is fixed to the base 2 by screws.

The mounting support 1 is detachably and fixedly connected with a mounting top shell 12 and a mounting bottom shell 13, four sub-shells 4 are arranged between the mounting top shell 12 and the mounting bottom shell 13 in a stacked mode, and the movable contact 11 and the sub-shells 4 are fixedly mounted through screws.

The installation support 1 is also fixedly connected with an operating mechanism 3 through a screw, the operating mechanism 3 is arranged above the movable contact 11, and an operator can control the movable contact 11 to be abutted against or away from the static contact 21 through the operating mechanism 3 matched with the isolating switch.

When the movable contact 11 is abutted against the static contact 21, the circuit is conducted, and the isolating switch is connected into the circuit; when the movable contact 11 is separated from the stationary contact 21, the circuit is segmented and the dc circuit is disconnected. After the movable contact 11 is in abutting connection with the static contact 21, an arc extinguishing magnetic field can lengthen an arc formed by connecting the movable contact 11 with the static contact 21, so that the creepage distance is increased, and a good arc extinguishing effect is realized.

In actual use, according to the needs of an electric power system, the multistage sub-shell 4 can be arranged to form a longitudinal module, the moving contact 11 which is longitudinally arranged and the arc extinguishing magnets 22 on two sides of the static contact 21 form an arc extinguishing magnetic field, the arc extinguishing magnetic field can change the electric arc formed by the moving contact 11 and the static contact 21 in a conductive manner, the creepage distance is increased, the good arc extinguishing effect is realized, the volume of the isolating switch can be effectively reduced, and then after the isolating switch is installed in a cabinet, only a small installation space inside the cabinet is occupied, and the convenience of supporting installation of the cabinet of operators can be improved.

Meanwhile, according to the requirement of the electric power system on the current carrying capacity of the isolating switch, the corresponding number of movable contact pieces 11, static contact pieces 21 and sub-shells 4 can be installed on the base 2 and the installation support 1, so that the usability of the isolating switch is further improved.

Referring to fig. 2, four first engaging plates 41 are integrally formed on one side of each sub-housing 4 near the mounting top housing 12, the four first engaging plates 41 are opposite to each other, and the first engaging plates 41 are provided with engaging holes 43; four first jogged grooves 42 are formed in one side, away from the mounting top shell 12, of each sub-shell 4, clamping blocks 44 are integrally formed in the bottoms of the four first jogged grooves 42, and the sizes of the clamping blocks 44 are matched with the jogged holes.

In the actual installation process, the operator pushes the sub-housing 4, so that the first engaging plate 41 on the sub-housing 4 slides into the first engaging groove 42, and after the first engaging plate 41 slides into the first engaging groove 42, the engaging block 44 is engaged in the engaging hole 43. Adjacent two sub-housings 4 are connected and fixed as a whole.

The first embedded plate 41 and the first embedded groove 42 are matched with each other for use, so that an operator can avoid comparing the group isolating switches before installing, and the convenience of assembling the sub-shell 4 by the operator is improved.

The clamping block 44 and the clamping hole 43 are matched with each other for use, the position of the first embedded plate 41 is limited, the technical effect of mutual clamping and fixing between two adjacent sub-shells 4 can be achieved, the contact area of the mutual connection between the two adjacent sub-shells 4 is effectively improved, the stability of installation between the two adjacent sub-shells 4 is improved, the occurrence of dislocation between the static contact piece 21 and the movable contact piece 11 caused by relative displacement between the subsequent factor shells 4 is effectively reduced, and the normal operation of a power system is ensured.

In order to further improve the convenience of the operator for embedding the clamping block 44 into the clamping hole 43, in the embodiment of the present application, an inclined slope surface 441 is disposed on one side of the clamping block 44 away from the base 2, and the inclined slope surface 441 is disposed along the direction in which the first embedding plate 41 slides into the first embedding groove 42.

In the process of assembling, an operator pushes the sub-shell 4, so that the first embedding plate 41 on the sub-shell 4 slides into the first embedding groove 42, the first embedding plate 41 clings to the bottom of the first embedding groove 42, clings to the inclined slope 441 and slides into the first embedding groove 42, the clamping block 44 in the first embedding groove 42 is embedded in the clamping hole 43, and the operator only needs to push the sub-shell 4, so that the first embedding plate 41 slides into the first embedding groove 42, and the clamping block 44 can be embedded in the clamping hole 43, thereby improving the convenience of assembling the sub-shell by the operator.

Referring to fig. 2 and fig. 2, in order to achieve the technical effect of detachable and fixed connection between the mounting top shell 12 and the sub-shell 4, in the embodiment of the present application, two second engaging grooves 121 are respectively formed on opposite side walls of the mounting top, and the second engaging grooves 121 are disposed in the same proportion as the first engaging grooves 42.

During assembly, an operator slides the first embedding plate 41 on the sub-housing 4 adjacent to the mounting top housing 12 into the second embedding groove 121, and at this time, the clamping block 44 in the second embedding groove 121 is clamped in the clamping hole 43, so that the first embedding plate 41 is clamped and fixed with the mounting top housing 12.

Referring to fig. 2, one side of the mounting bottom shell 13 near the mounting top shell 12 is integrally formed with four second embedded plates 131, two second embedded plates 131 are arranged on the same side wall of the mounting bottom shell 13, the other two second embedded plates 131 are light gray on the other side wall of the mounting bottom shell 13, the second embedded plates 131 are opposite to each other, and the first embedded plates 41 and the second embedded plates 131 are arranged in the same proportion.

After the sub-housing 4 is mounted, an operator can slide the second engaging plate 131 on the mounting top housing 12 into the first engaging groove 42 on the sub-housing 4, and make the engaging block 44 in the first engaging groove 42 engage with the engaging hole 43 on the second engaging plate 131, so that the sub-housing 4 is connected and fixed with the mounting bottom housing 13.

It should be noted that, depending on the requirements of the use situation of the disconnector required to be put into use, for the stability of the engagement between the disconnector housings 4, different numbers of the first engaging plate 41, the second engaging plate 131, the first engaging groove 42 and the second engaging groove 121 may be adopted, which is not limited herein.

Referring to fig. 4 and 5, a limiting groove 122 is formed in the mounting top shell 12, a through rod hole 123 is formed in the bottom of the limiting groove 122, a mounting column 5 is arranged on the mounting top shell 12, a limiting block 52 is integrally formed at the end of the mounting column 5, the limiting block 52 is matched with the limiting groove 122, and the mounting column 5 is matched with the through rod hole 123.

Referring to fig. 4, mounting grooves 45 adapted to the mounting posts 5 are formed in the side walls of the sub-housings 4 along the axial direction, the mounting posts 5 penetrate through the rod holes 123, the limiting blocks 52 are clamped and fixed in the limiting grooves 122, and one ends of the mounting posts 5 penetrating through the rod holes 123 sequentially penetrate through the four sub-housings 4.

Referring to fig. 4 and 5, a first mounting screw hole 132 is formed in the mounting bottom shell 13, a second mounting screw hole 51 is formed in the end portion of the mounting post 5, a mounting bolt 6 is provided in the mounting bottom shell 13, a rod portion of the mounting bolt 6 penetrates through the first mounting screw hole 132 and extends into the second mounting screw hole 51, the rod portion of the mounting bolt 6 is in threaded connection with the mounting post 5, and the mounting bottom shell 13 is abutted between a bolt portion of the mounting bolt 6 and the sub-shell 4.

The limiting block 52 on the mounting column 5 is matched with the limiting groove 122 on the mounting top shell 12, so that the technical effect of detachable and fixed connection between the mounting top shell 12 and the mounting column 5 can be realized.

Through erection column 5 and mounting bolt 6, can concatenate installation top shell 12, installation drain pan 13 and a plurality of sub-casing 4 together, further promote isolator overall structure's compactness, reduce the condition emergence of position offset between sub-casing 4, further ensure isolator's stability.

The implementation principle of the direct current isolating switch in the embodiment of the application is as follows: because the static contact pieces 21 are longitudinally arranged on the base 2, after the sub-shell is assembled on the mounting support 1, the movable contact pieces 11 on the sub-shell are in one-to-one correspondence with the static contact pieces 21 to form a corresponding number of longitudinally arranged switch modules, the arc extinguishing magnets 22 arranged on two sides of the movable contact pieces 11 and the static contact pieces 21 form an arc extinguishing magnetic field, the creepage distance between the movable contact pieces 11 and the static contact pieces 21 is increased by the arc extinguishing magnetic field, the arc extinguishing effect of the isolating switch is ensured, meanwhile, the volume of the isolating switch is effectively reduced, the space required by installing the isolating switch in the cabinet is saved, and the adaptation degree of the isolating switch and the internal mechanism of the cabinet is improved; through the first embedded plate 41, the first embedded groove 42, the clamping block 44 and the clamping hole 43 which are arranged on the sub-shell 4, the sub-shells 4 can be mutually stacked and connected, the clamping block 44 is embedded in the clamping hole 43, after the sub-shells 4 are assembled and put into practical use, the sub-shells 4 and the sub-shells 4 are not easy to deviate, the compactness is improved, meanwhile, the stability of the structure of the isolating switch is effectively improved, and the occurrence of the condition that the movable contact 11 and the static contact 21 in the isolating switch are broken is further reduced; through erection column 5 and mounting bolt 6, can concatenate installation top shell 12, installation drain pan 13 and a plurality of sub-casing 4 together, further promote isolator overall structure's compactness, reduce the condition emergence of position offset between sub-casing 4, further ensure isolator's stability.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The direct current isolating switch is characterized by comprising a mounting support (1), wherein a base (2) is fixedly connected to the mounting support (1) in an erected mode, a plurality of static contact pieces (21) are fixedly connected to the base (2) in an axial detachable mode on the base (2), a plurality of sub-shells (4) are detachably and fixedly connected to the mounting support (1) in a laminated mode, movable contact pieces (11) are detachably and fixedly connected to the sub-shells (4), and one end, far away from the shells, of each movable contact piece (11) faces towards the corresponding static contact piece (21);

an operating mechanism (3) is detachably and fixedly connected in the mounting support (1), and the operating mechanism (3) drives a plurality of movable contact pieces (11) to respectively prop against a plurality of static contact pieces (21);

any one set of movable contact piece (11) with the both sides of quiet contact piece (21) are provided with arc extinguishing magnet (22) respectively, arc extinguishing magnet (22) all with base (2) fixed connection, any one set of movable contact piece (11) with two of quiet contact piece (21) both sides arc extinguishing magnet (22) form the magnetic field of quenching.

2. The direct current isolating switch according to claim 1, wherein one end of each of the plurality of sub-housings (4) is integrally formed and extends to form a first embedded plate (41), the outer side walls of the end parts of the plurality of sub-housings (4) far away from the first embedded plates (41) are respectively provided with a first embedded groove (42), and the size of the first embedded grooves (42) is matched with the size of the first embedded plates (41);

the first embedded plate (41) is embedded in the first embedded groove (42), and the first embedded plate (41) is detachably and fixedly connected with the groove bottom of the first embedded groove (42).

3. The direct current isolating switch according to claim 2, wherein a clamping block (44) is fixedly connected to the bottom of the first embedding groove (42), a clamping hole (43) adapted to the clamping block (44) is formed in the first embedding plate (41), and the clamping block (44) is embedded and clamped and fixed in the clamping hole (43).

4. A direct current disconnector according to claim 3, characterized in that the clamping block (44) is formed with an inclined slope (441), said inclined slope (441) being arranged in a direction in which the first engagement plate (41) slides into the first engagement groove (42).

5. A direct current disconnector according to claim 4, characterized in that the mounting support (1) comprises a mounting top shell (12) and a mounting bottom shell (13), the sub-shell (4) adjacent to the mounting top shell (12) is detachably and fixedly connected to the mounting top shell (12), the sub-shell (4) adjacent to the mounting bottom shell (13) is detachably and fixedly connected to the mounting bottom shell (13), and a plurality of sub-shells (4) are abutted between the mounting top shell (12) and the mounting bottom shell (13).

6. The direct current isolating switch according to claim 5, wherein the mounting top case (12) is provided with a second engaging groove (121), the second engaging groove (121) is arranged in the same proportion as the first engaging groove (42), and the first engaging plate (41) is clamped and fixed with the clamping block (44) in the second engaging groove (121).

7. The direct current isolating switch according to claim 5, wherein a second embedded plate (131) is integrally formed on the mounting bottom shell (13), the second embedded plate (131) and the first embedded plate (41) are arranged in the same proportion, and the second embedded plate (131) is clamped and fixed with the clamping block (44) in the first embedded groove (42).

8. The direct current isolating switch according to claim 5, wherein a mounting column (5) is arranged on the mounting top shell (12), a plurality of mounting grooves (45) which are matched with the mounting column (5) are axially formed in the sub-shells (4), the mounting column (5) sequentially penetrates through the mounting grooves (45) and extends to the outside of the outermost sub-shells (4), and one end, far away from the mounting top shell (12), of the mounting support (1) is detachably and fixedly connected with the mounting bottom shell (13).

9. The direct current isolating switch according to claim 8, wherein a first mounting screw hole (132) is erected on the mounting bottom shell (13), a mounting bolt (6) is arranged on the mounting bottom shell (13), a second mounting screw hole (51) is formed in the end portion of the mounting post (5) penetrating through the sub-shell (4), a rod portion of the mounting bolt (6) penetrates through the mounting bolt (6) and extends into the first mounting screw hole (132), the mounting bolt (6) is in threaded connection with the mounting post (5), and the mounting bottom shell (13) is abutted between the sub-shell (4) and a bolt portion of the mounting bolt (6).

10. The direct current isolating switch according to claim 8, wherein the mounting top shell (12) is provided with a limit groove (122), one end of the mounting support (1) close to the mounting top shell (12) is integrally provided with a limit block (52), and the limit block (52) is matched with the limit groove (122);

the bottom of the limiting groove (122) is provided with a through rod hole (123) matched with the mounting column (5), and after the mounting column (5) penetrates through the through rod hole (123), the limiting block (52) abuts against the bottom of the limiting groove (122).

Images