10kv outdoor isolating switch contact and isolating switch

Abstract

The application discloses a 10kV outdoor isolating switch contact and an isolating switch, the contact comprises: a moving contact; a static contact, the static contact comprises a screw assembly, a contact finger head and a spring ring, the contact finger head is inwardly bent to form a hook, and the spring ring is sleeved on the hook; and a connecting piece, one end of the connecting piece is a hexagonal body, and one contact finger head is connected to each of six surfaces of the hexagonal body through the screw assembly. The moving contact and the static contact are in cylindrical surface connection, can be effectively clamped, and can prevent heating caused by poor contact.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of disconnectors, and particularly relates to a 10kV outdoor disconnector contact and disconnector. BACKGROUND

[0002] The disconnector is a high-voltage electrical appliance for switching on and off the circuit without load current, and is used for changing the circuit connection or isolating the line or device from the power supply. At present, the 10kV outdoor disconnector used in the transformer substation in China is of double-column simultaneous opening and closing type, and the rotating mode is to rotate the porcelain column, and the connection mode is to use the spring self-pressing type. This kind of disconnector has complex structure, and the rotating and connecting parts are not in good contact, which often causes the phenomena of heating and sparking, and welding. Long-term thermal expansion and cold contraction also cause the stress change of the porcelain column, and the porcelain column is often broken when the knife switch is pulled out. Since it is a double-column rotating opening and closing type, it is difficult to master during maintenance and debugging. When the 10kV disconnector of double-column opening and closing type is debugged, the synchronism between the two columns and the phase-to-phase synchronism need to be debugged. Once the foundation changes slightly or after multiple operations, the contact is poor and sparks.

[0003] In addition, at present, most of the outdoor 10KV disconnectors use self-type spring pressing, which is easy to deform and lose elasticity under the condition of long-term overcurrent heating. Since it is operated outdoors, rainwater causes spring rust, which eventually leads to an increase in contact resistance at the connection, causing the entire connection part to heat and spark. SUMMARY

[0004] In view of the problems of complex structure, unreasonable contact and difficult debugging of the existing outdoor 10kV disconnector, the present application aims to provide a 10kV outdoor disconnector contact and disconnector. The 10kV disconnector of the present application has simple structure, labor-saving operation, good current conduction, convenient debugging, good contact, and effectively prevents the heating problem of the disconnector. The single-phase pull rod is cancelled, and the connection of the incoming and outgoing lines becomes simple, the cost is low, and the safety and reliability of production and use are improved.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0006] A 10kV outdoor disconnector contact, characterized in that the contact comprises:

[0007] a moving contact;

[0008] a static contact, the static contact comprising a screw assembly, a contact finger head and a spring ring, the contact finger head being inwardly bent to form a hook, and the spring ring being sleeved on the hook;

[0009] a connecting piece, one end of the connecting piece being a hexagonal body, and six faces of the hexagonal body being connected with one contact finger head through the screw assembly respectively.

[0010] Further, the contact further comprises a rain cover, the rain cover comprises a cover body and a fixing body, the cover body is fixed on the connecting piece through the fixing body, and the cover body is used for covering the static contact.

[0011] Further, one end of the moving contact is a plane body, the other end is a semicircular spherical body, and the middle part is a cylindrical body, and the semicircular spherical body is screwed on the cylindrical body.

[0012] Further, the other end of the connecting piece is a plane body, and a screw hole is arranged on the plane body.

[0013] The application further comprises a 10kV outdoor isolating switch, characterized in that the isolating switch comprises:

[0014] The contact;

[0015] The fixed porcelain column part;

[0016] The rotating porcelain column part;

[0017] The base part;

[0018] And the operating part;

[0019] The contact is arranged between the fixed porcelain column part and the rotating porcelain column part, the base part supports the fixed porcelain column part and the rotating porcelain column part, and the operating part is installed below the rotating porcelain column part.

[0020] Further, the fixed porcelain column part comprises a fixed porcelain column, a wiring board and a connecting seat, the wiring board is fixed at the top end of the fixed porcelain column, the wiring board is used for connecting the connecting piece, and the connecting seat is arranged at the bottom of the fixed porcelain column.

[0021] Further, the rotating porcelain column part comprises a rotating porcelain column, a conductive plate and a base, the conductive plate is arranged at the top end of the rotating porcelain column, the conductive plate is used for connecting the moving contact, and the base is arranged at the bottom of the rotating porcelain column.

[0022] Further, the base part comprises a cross iron, and the cross iron is provided with perforations at two ends, and is used for installing the fixed porcelain column part and the rotating porcelain column part.

[0023] Further, the operating part comprises an operating rod, a clamp, a bearing and a bearing cover.

[0024] The application has the beneficial effects that:

[0025] 1. The application is a single-column rotating isolating switch, and each phase is driven to be opened and closed at the same time, so that the connection of the moving contact and the static contact is facilitated.

[0026] 2. The moving contact is cylindrical, the static contact is six-petal plum blossom type, the connection mode is horizontal insertion, and the cylindrical surface connection can effectively clamp and prevent heating caused by poor contact.

[0027] 3. The isolating switch of the application greatly reduces the weight of the overall switch, simplifies the structure, improves the opening and closing quality, prevents heating, achieves the purpose of safe and efficient production, saves production cost, and improves enterprise benefit. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall schematic diagram of the 10kV outdoor isolating switch of the application.

[0029] Figure 2 is the top view of the 10kV outdoor isolating switch of the application.

[0030] Figure 3 is the structure diagram of the moving contact in the 10kV outdoor isolating switch contact.

[0031] Figure 4 is the structure diagram of the rain cover in the 10kV outdoor isolating switch contact.

[0032] Figure 5 is the structure diagram of the static contact in the 10kV outdoor isolating switch contact.

[0033] Figure 6 is the structure diagram of the connecting piece in the 10kV outdoor isolating switch contact.

[0034] Figure 7 is the structure diagram of the fixed porcelain column part.

[0035] Figure 8 is the structure diagram of the rotating porcelain column part.

[0036] Figure 9 is the structure diagram of the base part.

[0037] Figure 10 is the structure diagram of the operating part. DETAILED DESCRIPTION

[0038] The specific embodiments of the application will be described in detail below in combination with the technical solutions and drawings.

[0039] The structure of the 10kV outdoor high-voltage isolating switch of the application is three-phase type, each phase structure is the same, and is linked through an inter-phase pull rod assembly.

[0040] As shown in Figures 2-6 , the 10kV outdoor isolating switch contact includes a moving contact 1, a static contact 3, and a connecting piece 4.

[0041] The one end of the moving contact 1 is a flat body 1.1 for connecting the conducting plate, and the other end is a half-sphere alloy head 1.4 which can be inserted into the contact finger head 3.2 of the static contact 3. The middle part of the moving contact 1 is a cylinder 1.2, and the half-sphere alloy head 1.4 is copper alloy and is screwed on the screw body 1.3 at one end of the cylinder 1.2. The surface of the flat body 1.1 is provided with screw holes for screwing the conducting plate and the moving contact.

[0042] The 10kV outdoor isolating switch contact further comprises a rainproof cover 2 in the shape of a horn, including a cover body 2.1 and a fixing body 2.2. The cover body 2 is fixed on the connecting piece 4 through the fixing body 2.2, and is used for covering the static contact 3 to prevent rainwater from entering.

[0043] The static contact 3 comprises a screw assembly 3.1, a contact finger head 3.2 and a spring ring 3.3. The contact finger head 3.2 is six in number, and the screw assembly 3.1 fixes the six contact finger heads 3.2 on the hexagonal body 4.1 of the connecting piece 4. The contact finger head 3.2 is copper alloy and is in the shape of a hook, with the inner side being in the shape of a circular arc. The six contact finger heads 3.2 form a circular static contact, and the contact finger heads 3.2 are inwardly curved and can be sleeved into the spring ring 3.3. The spring ring 3.3 is a non-opening rustproof circular spring ring and can be sleeved into the inwardly curved hook of the static contact 3.

[0044] One end of the connecting piece 4 is a hexagonal body 4.1, the other end is a flat body 4.3, and the middle part is a cylinder 4.2. The cylinder 4.2 is provided with fixing holes for fixing the rainproof cover. The hexagonal body 4.1 has six contact finger fixing planes 4.1.1, each of which is provided with a contact finger fixing hole 4.1.2 for fixing the static contact 3. The flat body 4.3 is also provided with screw holes for screwing the terminal plate 3.

[0045] As shown in Figure 1 The 10kV outdoor isolating switch of the present application comprises the 10kV outdoor isolating switch contact a as described above, and further comprises a fixed porcelain column part b, a rotating porcelain column part c, a base part d and a operating part e.

[0046] The contact a is arranged between the fixed porcelain column part b and the rotating porcelain column part c, the base part d supports the fixed porcelain column part b and the rotating porcelain column part c, and the operating part e is installed below the rotating porcelain column part c.

[0047] As shown in Figure 7 The fixed porcelain column part b comprises a terminal assembly 5, a bolt assembly 6, a fixed porcelain column 7, a terminal plate 8, a connecting seat 9 and a screw assembly 10.

[0048] The main body of the fixed porcelain column part b is a fixed porcelain column 7, the terminal board 8 is fixed at the top end of the fixed porcelain column 7, the terminal board 8 is used to connect the connecting piece 4, and the connecting seat 9 is arranged at the bottom of the fixed porcelain column 7. The terminal board 8 is provided with a terminal assembly 5, the terminal assembly 5 is a cover plate or a cap, the terminal assembly 5 is provided with a cavity, a bolt assembly 6 is penetrated into the cavity, and the bolt assembly 6 is matched with a threaded hole on the fixed porcelain column 7, so that the terminal board 8 is fixed at the top end of the fixed porcelain column 7. The terminal board 8 is a copper bar, both ends of the copper bar are provided with threaded holes, one end of the copper bar is connected with a wire through a bolt assembly, and the other end of the copper bar is connected with the connecting piece 4 of the contact a through a bolt assembly. The connecting seat 9 is arranged at the bottom of the fixed porcelain column 7 and is connected with the base part d through a screw assembly 10.

[0049] As shown in the drawings, the rotating porcelain column part c comprises a terminal assembly 11, a bolt assembly 12, a bearing cover 13, a bearing 14, a nut 15, a nail 16, a soft copper strip 17, a bolt assembly 18, a conductive plate 19, a rotating porcelain column 20, a bolt assembly 21, a base 22 and a flange plate 23. Figure 8

[0050] The conductive plate 19 is arranged at the top end of the rotating porcelain column 20, and the conductive plate 19 is used to connect the movable contact 1. The base 22 is arranged at the bottom of the rotating porcelain column 20.

[0051] The bearing cover 13 is a copper circular shape, the lower part of the bearing cover 13 is provided with a threaded hole, and the bearing cover 13 is pressed and connected at the top of the rotating porcelain column 20 through the cooperation of the bolt assembly 18 and the threaded hole.

[0052] The bearing 14 is arranged in the bearing cover 13, and the upper part of the bearing cover 13 is provided with an opening.

[0053] The terminal assembly 11 is a T-shaped structure, one end of the terminal assembly 11 is a flat surface, a wire is connected into the terminal assembly 11 through the bolt assembly 12, and the soft copper strip 17 is connected to the conductive plate 19. The other end of the terminal assembly 11 is a cylindrical shape and is provided with a thread, penetrates into the upper opening of the bearing cover 13 and is matched and connected with the bearing 14. The nut 15 locks the bearing 14 in the bearing cover 13.

[0054] The nail 16 penetrates through the cylindrical end of the terminal assembly 11 and clamps the nut 15.

[0055] The soft copper strip 17 is made of copper and can be two, and a length is reserved for the rotating porcelain column 20 to rotate. The two ends of the soft copper strip 17 are respectively connected to the flat end of the terminal assembly 11 and the conductive plate 19 through the bolt assembly 12.

[0056] The conductive plate 19 is made of copper, one end of the conductive plate 19 is pressed and connected with the top of the rotating porcelain column 20 through the bolt assembly 18. The other end of the conductive plate 19 is provided with a threaded hole and is used to connect with the flat body 1.1 of the movable contact 1.​

[0057] Bolt assembly 21 connects base 22 to flange 23 below.

[0058] The flange 23 is provided with a pull cylinder 24, which is used to connect the tie rod assemblies between each phase.

[0059] like Figure 9 As shown, the base portion d includes a horizontal iron 25, and the two ends of the horizontal iron 25 are provided with through holes 26 for installing the fixed ceramic column portion b and the rotating ceramic column portion c.

[0060] A number of fixing holes 27 are provided around the perforation 26. The fixing holes 27 cooperate with the screw assembly 10 to fasten the connecting seat 9 of the fixed ceramic column part b. The fixing holes 27 cooperate with the bolt assembly 21 to fasten the flange 23 of the rotating ceramic column part c.

[0061] like Figure 10 As shown, the operating part e is disposed on the base part d and includes a bearing cover 28, a bearing 29, a bolt assembly 30, a through pin 31, an operating lever 32, a clamp 33, and a three-phase tie rod assembly 34.

[0062] A bearing cover 28 is fastened to the horizontal iron 25 of the base portion d by bolt assembly 30. A bearing 29 is installed inside the bearing cover 28. The bearing cover 28, the bearing 29, and the fittings and clamps 33 of the flange 23 cooperate with each other. The operating rod 32 is inserted into the fitting of the flange 23 and fixed by through bolt 31.

[0063] The three-phase tie rod assembly 34 is a segmented bent linkage screw. The tie rod assembly 34 is sleeved onto the pulling cylinder 24, which is welded to a suitable position on the flange 23. The middle tie rod in the tie rod assembly 34 is a double-threaded rod, and one end of the tie rod assembly has a semi-circular bend, connected to the pulling cylinder 24 of the other ceramic column flange 23 by a screw. During operation, the rotation of the operating lever 32 in the operating part causes the tie rod assembly 34 to move under the action of the flange 23. Simultaneously, the other two movable ceramic columns also rotate, resulting in the simultaneous opening and closing of the three-phase moving contacts.

[0064] The opening and closing of the 10kV outdoor disconnector of this invention is achieved as follows: When the disconnector needs to be operated, the operating lever 32 is rotated. The operating lever 32 drives the rotating porcelain column, and the pull rod assembly 34 rotates together with the rotating porcelain column, driving the other two phase porcelain columns to rotate as well. Under the action of the rotating porcelain column, the three-phase moving contacts can be inserted or pulled out of the stationary contacts between each phase, achieving the purpose of effective synchronous opening and closing of the three phases. The opening and closing of the high-voltage disconnector is completed by the rotation of a single column.

[0065] The double-column rotation of outdoor 10kV high-voltage disconnecting switch is changed into single-column rotation, and after installation, the debugging of inter-phase pull rod assembly can be directly debugged to complete the debugging work.

[0066] The structure of the present 10kV disconnecting switch omits the assembly of three sets of inter-phase pull rod assemblies and three bearing seats, and the contact type contact is changed into plug-in type contact, which fundamentally changes the current passing mode, the action mode and the contact mode of the disconnecting switch. The in-and-out line current is changed into soft copper belt current guide. Therefore, not only the production cost is greatly saved and the product price is reduced, but more importantly, the on-site debugging time of the product is reduced, the debugging is simplified, the heating of the connection and the porcelain column is prevented, the porcelain column is prevented from being pulled off, the heating of each connection part is prevented, and the safe operation of the disconnecting switch is ensured.

[0067] The applicant makes detailed description and explanation of the embodiments of the present application in combination with the drawings of the specification, but those skilled in the art should understand that the above embodiments are only preferred embodiments of the present application, and the detailed description is only to help the reader better understand the spirit of the present application, and is not a limitation on the protection scope of the present application, on the contrary, any improvement or modification based on the spirit of the present application should fall within the protection scope of the present application.

Claims

1. A 10kV outdoor disconnect switch, characterized in that, The disconnecting switch includes: a contact, a fixed ceramic column part, a rotating ceramic column part, a base part, and an operating part; The contact includes: a moving contact; a stationary contact, the stationary contact including a screw assembly, contact fingers and a spring coil, the number of contact fingers being six, the contact fingers being bent inward to form hooks, and the spring coil being sleeved on the hooks of the six contact fingers; and a connector, one end of the connector being a hexagon, with one of the contact fingers connected to each of the six faces of the hexagon via the screw assembly. The rotating ceramic column part includes a rotating ceramic column, a conductive plate and a base. The conductive plate is disposed at the top of the rotating ceramic column and is used to connect the moving contact. The base is disposed at the bottom of the rotating ceramic column. The fixed ceramic column part also includes a wiring assembly and a soft copper strip; the soft copper strip is made of copper, there are two strips, and it is long enough for the rotating ceramic column to rotate. The two ends of the soft copper strip are connected to the planar end of the wiring assembly and the conductive plate respectively by the bolt assembly. The contact is disposed between the fixed ceramic column portion and the rotating ceramic column portion, the base portion supports the fixed ceramic column portion and the rotating ceramic column portion, and the operating portion is installed below the rotating ceramic column portion.

2. The disconnecting switch according to claim 1, characterized in that, It also includes a rain cover, which includes a cover body and a fixing body. The cover body is fixed to the connector by the fixing body, and the cover body is used to cover the stationary contact.

3. The disconnecting switch according to claim 1, characterized in that, One end of the moving contact is a planar body, the other end is a hemispherical body, and the middle part is a cylinder, with the hemispherical body screwed onto the cylinder.

4. The disconnecting switch according to claim 1, characterized in that, The other end of the connector is a flat body with screw holes.

5. The disconnecting switch according to claim 1, characterized in that, The fixed porcelain column part includes a fixed porcelain column, a terminal block, and a connector. The terminal block is fixed to the top of the fixed porcelain column and is used to connect the connector. The connector is located at the bottom of the fixed porcelain column.

6. The disconnecting switch according to claim 1, characterized in that, The base portion includes a horizontal iron, with through holes at both ends for mounting the fixed ceramic column portion and the rotating ceramic column portion.

7. The disconnecting switch according to claim 1, characterized in that, The operating part includes an operating lever, a clamp, a bearing, and a bearing cover.

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