Bar-shaped fuse type disconnecting switch

Abstract

The utility model relates to a strip-shaped fuse type disconnecting switch, which comprises a shell, a fuse, a switch body, a switch body and a power supply, and is characterized in that a fuse is arranged in the shell; the installation cylinder is vertically fixed in the shell and located below the fuse, the upper end and the lower end of the installation cylinder are arranged in a penetrating mode, and the lower end of the installation cylinder penetrates through the bottom of the shell and is communicated with the outside; and the sealing plate is rotationally connected into the shell and located above the mounting cylinder, and the sealing plate is used for sealing the upper end of the mounting cylinder. The beneficial effects of the utility model are that when the disconnecting switch is installed, the disconnecting switch can be opened by rotating the sealing plate, then the flange screw passes through the installation cylinder for installation and fixation, and after the installation is completed, the sealing plate is rotated to reset, so that the upper end of the installation cylinder is sealed, and the interior and the exterior of the disconnecting switch are isolated; the installation cylinder can be effectively sealed, foreign matters are prevented from falling into the metal part or stretching into the metal part due to misoperation, and contact with an electrified copper piece below is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of isolating switches, in particular to a strip fuse type isolating switch. Background Art

[0002] The isolating switch is a switching device that is mainly used for "isolating power supply, switching operation, connecting and disconnecting small current circuits" and has no arc extinguishing function. When the isolating switch is in the open position, there is an insulation distance that meets the specified requirements and an obvious disconnection mark between the contacts; when it is in the closed position, it is a switching device that can carry the current under normal circuit conditions and the current under abnormal conditions (such as short circuit) within a specified time. It is generally used as a high-voltage isolating switch, that is, an isolating switch with a rated voltage of more than 1kV. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, construction and safe operation of substations and power plants. The main feature of the isolating switch is that it has no arc extinguishing ability and can only open and close the circuit without load current.

[0003] Chinese patent document 2017800141533 discloses a load-break switch, wherein a switch contact device is provided for each current phase, the switch contact device is connected to an associated input bar, the input bar is arranged on the rear side of the housing of the load-break switch, for establishing electrical contact with the current-carrying bar, wherein the switch contact device can be switched by a tool-safe operating unit of the load-break switch, the tool-safe operating unit being attached to the front side of the housing. The mounting channel of the housing of the load-break switch extends through an elongated opening in the switch slide, and the switch slide can be moved in a translational manner within the housing.

[0004] In the above patent, the load circuit breaker is fixed on the current-carrying bar by passing the clamping bracket through the installation channel. Therefore, the inside of the load circuit breaker is connected with the outside through the installation channel. When the load circuit breaker is installed and fixed, external dust and various flying insects will enter the inside of the load circuit breaker through the installation channel, thereby posing a safety hazard to the load circuit breaker when in use. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a strip fuse type isolating switch to solve the above problems.

[0006] The technical solution of the utility model is implemented as follows: a strip fuse type isolating switch, comprising:

[0007] A housing, wherein a fuse is arranged in the housing;

[0008] A mounting tube, the mounting tube is vertically fixed in the housing and is located below the fuse, the upper and lower ends of the mounting tube are through-set, and the lower end of the mounting tube passes through the bottom of the housing and communicates with the outside;

[0009] A sealing plate is rotatably connected in the shell and is located above the mounting tube. The sealing plate is used to seal the upper end of the mounting tube.

[0010] By adopting the above technical solution, when installing the isolating switch, the sealing plate can be rotated to open it, and then the flange screws can be passed through the installation tube for installation and fixing. When the installation is completed, the sealing plate is rotated again to reset it, thereby sealing the upper end of the installation tube, isolating the inside of the isolating switch from the outside, effectively reducing the possibility of external dust and flying insects entering the inside of the isolating switch, and can effectively seal the installation tube to prevent foreign objects from falling into or extending into metal parts due to misoperation, avoiding contact with the live copper parts below. At the same time, the inside of the installation tube meets GBT 5783\5783, and the M12 bolt can be freely inserted for installation.

[0011] The utility model is further configured to include:

[0012] A first layer plate, the first layer plate is arranged in the housing, a first opening is opened on the first layer plate, and a shape of the first opening matches the sealing plate;

[0013] A second layer plate, the second layer plate is arranged below the first layer plate, the second layer plate is provided with a second opening, the shape of the second opening corresponds to the outer wall of the installation tube, and the edge of the second layer plate is connected to the lower side of the first layer plate;

[0014] The first opening is located above the second opening, one side of the sealing plate is rotatably connected in the first opening, the upper outer wall of the mounting cylinder is fixed in the second opening, and an isolation cavity is formed between the first layer plate and the second layer plate.

[0015] By adopting the above technical solution, an isolation cavity can be effectively formed, and controllable communication between the mounting cylinder and the inside of the isolating switch can be achieved through the sealing plate, and the installation of the sealing plate and the mounting cylinder can be more convenient.

[0016] The utility model is further configured as follows: rotation grooves are provided on two sides of the sealing plate that are away from each other, the axes of the two rotation grooves are on the same straight line, and a rotation shaft matching the rotation grooves is protruded from the first opening.

[0017] By adopting the above technical solution, the sealing plate can be rotatably connected to the first opening, thereby achieving the sealing of the installation cylinder.

[0018] The utility model is further configured as follows: the cross section of the rotating shaft is set to be square, the edges at the four corners of the rotating shaft are set to be rounded, the shape of the rotating shaft matches the rotating groove, and a notch connected to the inside of the rotating groove is opened on one side of the sealing plate.

[0019] By adopting the above technical scheme, the square rotating shaft and rotating groove can enable the sealing plate to have a positioning stop effect after rotation, so that the sealing plate can automatically stop after rotating 90°, forming a gear stagnation effect, making it more convenient to use, and the rounded corners can make the rotation of the sealing plate smoother. At the same time, the notch can make the rotating groove more easily deformed during rotation, making the rotation of the sealing plate smoother and reducing resistance.

[0020] The utility model is further configured as follows: a side of the sealing plate away from the rotating shaft is snap-connected with the first opening.

[0021] By adopting the above technical solution, the stability of the connection between the sealing plate and the first opening can be further improved.

[0022] The utility model is further configured as follows: a first flange and a second flange are protruding on the outer wall of one end of the mounting tube, the first flange is arranged at one end of the mounting tube, the second flange is arranged below the first flange at an interval, and the second layer of board is clamped between the first flange and the second flange.

[0023] By adopting the above technical solution, the installation tube can be effectively fixed on the second layer plate, and the structure is simple and the installation is convenient.

[0024] The utility model is further configured as follows: reinforcing ribs are protruding on the upper and lower sides of the second layer plate, the reinforcing ribs on the upper side of the second layer plate abut against the lower side of the first flange, the reinforcing ribs on the lower side of the second layer plate abut against the upper side of the second flange, and the spacing between the reinforcing ribs on the upper side and the reinforcing ribs on the lower side of the second layer plate is the same as the spacing between the first flange and the second flange.

[0025] By adopting the above technical solution, the reinforcing ribs can effectively improve the strength of the second layer of board and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 This is a schematic diagram of the structure of a specific implementation method of the utility model;

[0028] Figure 2 The internal structure of the specific implementation method of the utility model is shown in FIG. Figure 1 ;

[0029] Figure 3 The internal structure of the specific implementation method of the utility model is shown in FIG. Figure 2 ;

[0030] Figure 4 for Figure 3 The structural diagram of A in the figure;

[0031] Figure 5 for Figure 3 Schematic diagram of the structure of B;

[0032] Figure 6 This is a cross-sectional view of the specific implementation method of the utility model Figure 1 ;

[0033] Figure 7 for Figure 6 Schematic diagram of the structure of C;

[0034] Figure 8 This is a cross-sectional view of the specific implementation scheme of the utility model Figure 2 ;

[0035] Fig. 9 for Figure 8 Schematic diagram of the structure of D. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1-Figure 9 As shown, the utility model discloses a strip-shaped fuse-type isolating switch, comprising:

[0038] A housing 1, wherein a fuse 10 is arranged in the housing 1;

[0039] The mounting tube 2 is vertically fixed in the housing 1 and is located below the fuse 10. The upper and lower ends of the mounting tube 2 are connected, and the lower end of the mounting tube 2 passes through the bottom of the housing 1 and communicates with the outside;

[0040] The sealing plate 3 is rotatably connected in the shell 1 and is located above the mounting tube 2 . The sealing plate 3 is used to seal the upper end of the mounting tube 2 .

[0041] By adopting the above technical solution, when installing the isolating switch, the sealing plate 3 can be rotated to open it, and then the flange screws can be passed through the installation tube 2 for installation and fixing. When the installation is completed, the sealing plate 3 is rotated again to reset it, thereby sealing the upper end of the installation tube 2, isolating the inside of the isolating switch from the outside, effectively reducing the possibility of external dust and flying insects entering the inside of the isolating switch, and can effectively seal the installation tube 2 to prevent foreign objects from falling into or extending into metal parts due to misoperation, avoiding contact with the live copper parts below. At the same time, the inside of the installation tube meets GBT 5783\5783, and the M12 bolts can be freely inserted for installation.

[0042] In the embodiment of the utility model, it also includes:

[0043] A first layer plate 11, wherein the first layer plate 11 is disposed in the housing 1, and a first opening 110 is formed on the first layer plate 11, and a shape of the first opening 110 matches the sealing plate 3;

[0044] A second layer plate 12, the second layer plate 12 is arranged below the first layer plate 11, the second layer plate 12 is provided with a second opening 120, the shape of the second opening 120 corresponds to the outer wall of the installation tube 2, and the edge of the second layer plate 12 is connected to the lower side of the first layer plate 11;

[0045] The first opening 110 is located above the second opening 120 , one side of the sealing plate 3 is rotatably connected in the first opening 110 , the upper outer wall of the mounting tube 2 is fixed in the second opening 120 , and an isolation cavity 13 is formed between the first layer plate 11 and the second layer plate 12 .

[0046] By adopting the above technical solution, the isolation chamber 13 can be effectively formed, and the controllable connection between the installation cylinder 2 and the inside of the isolating switch can be achieved through the sealing plate 3, and the installation of the sealing plate 3 and the installation cylinder 2 is made more convenient.

[0047] In the embodiment of the utility model, rotation grooves 30 are formed on two sides of the sealing plate 3 away from each other, the axes of the two rotation grooves 30 are on the same straight line, and a rotation shaft 111 matching the rotation groove 30 is protruded from the first opening 110 .

[0048] By adopting the above technical solution, the sealing plate 3 can be rotatably connected to the first opening 110 , thereby achieving the sealing of the installation tube 2 .

[0049] In the embodiment of the utility model, the cross-section of the rotating shaft 111 is set to be square, the edges at the four corners of the rotating shaft 111 are set to be rounded, the shape of the rotating shaft 111 matches the rotating groove 30, and a notch 31 connected to the inside of the rotating groove 30 is opened on one side of the sealing plate 3.

[0050] By adopting the above technical solution, the square rotating shaft 111 and the rotating groove 30 can enable the sealing plate 3 to have a positioning stop effect after rotation, so that the sealing plate 3 can automatically stop after rotating 90°, forming a gear stagnation effect, making it more convenient to use, and the rounded corners can make the rotation of the sealing plate 3 smoother. At the same time, the notch 31 can make the rotating groove 30 more easily deformed during rotation, so that the rotation of the sealing plate 3 is smoother and the resistance is reduced.

[0051] In the embodiment of the utility model, the side of the sealing plate 3 away from the rotating shaft 111 is snap-connected to the first opening 110 .

[0052] By adopting the above technical solution, the stability of the connection between the sealing plate 3 and the first opening 110 can be further improved.

[0053] In an embodiment of the utility model, a first flange 20 and a second flange 21 are protruding from the outer wall of one end of the mounting tube 2. The first flange 20 is arranged at one end of the mounting tube 2, and the second flange 21 is arranged below the first flange 20 at an interval. The second layer plate 12 is clamped between the first flange 20 and the second flange 21.

[0054] By adopting the above technical solution, the installation tube 2 can be effectively fixed on the second layer board 12, and the structure is simple and the installation is convenient.

[0055] In an embodiment of the utility model, reinforcing ribs 121 are protruding from the upper and lower sides of the second layer plate 12, the reinforcing ribs 121 on the upper side of the second layer plate 12 abut against the lower side of the first flange 20, the reinforcing ribs 121 on the lower side of the second layer plate 12 abut against the upper side of the second flange 21, and the spacing between the reinforcing ribs 121 on the upper side of the second layer plate 12 and the reinforcing ribs 121 on the lower side is the same as the spacing between the first flange 20 and the second flange 21.

[0056] By adopting the above technical solution, the reinforcing ribs 121 can effectively improve the strength of the second layer board 12 and extend its service life.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A strip fuse type disconnector, characterized in that: include, A housing (1), wherein a fuse (10) is arranged in the housing (1); A mounting tube (2), the mounting tube (2) being vertically fixed in the housing (1) and being located below the fuse (10), the mounting tube (2) being through-connected at both ends, and the lower end of the mounting tube (2) passing through the bottom of the housing (1) to communicate with the outside; A sealing plate (3), the sealing plate (3) being rotatably connected in the housing (1) and being located above the mounting tube (2), the sealing plate (3) being used to seal the upper end of the mounting tube (2).

2. A strip fuse type disconnector according to claim 1, characterized in that: Also includes: A first layer plate (11), the first layer plate (11) being arranged in the housing (1), the first layer plate (11) being provided with a first opening (110), the shape of the first opening (110) matching that of the sealing plate (3); a second layer plate (12), the second layer plate (12) being arranged below the first layer plate (11), the second layer plate (12) being provided with a second opening (120), the shape of the second opening (120) corresponding to the outer wall of the mounting tube (2), and the edge of the second layer plate (12) being connected to the lower side of the first layer plate (11); The first opening (110) is located above the second opening (120), one side of the sealing plate (3) is rotatably connected in the first opening (110), the upper outer wall of the mounting cylinder (2) is fixed in the second opening (120), and an isolation cavity (13) is formed between the first layer plate (11) and the second layer plate (12).

3. A strip fuse type disconnector according to claim 2, characterized in that: The sealing plate (3) is provided with rotation grooves (30) on two sides away from each other, the axes of the two rotation grooves (30) are on the same straight line, and the first opening (110) is provided with a protruding rotation shaft (111) matching the rotation groove (30).

4. A strip fuse type disconnector according to claim 3, characterized in that: The cross section of the rotating shaft (111) is set to be square, the edges at the four corners of the rotating shaft (111) are set to be rounded, the shape of the rotating shaft (111) matches the rotating groove (30), and a notch (31) communicating with the interior of the rotating groove (30) is opened on one side of the sealing plate (3).

5. A strip fuse type disconnector according to claim 3, characterized in that: A side of the sealing plate (3) away from the rotating shaft (111) is snap-connected to the first opening (110).

6. A strip fuse type disconnector according to claim 2, characterized in that: A first flange (20) and a second flange (21) are protruding from an outer wall at one end of the installation tube (2); the first flange (20) is arranged at one end of the installation tube (2); the second flange (21) is arranged below the first flange (20) at an interval; and the second layer plate (12) is clamped between the first flange (20) and the second flange (21).

7. A strip fuse type disconnector according to claim 6, characterized in that: The second layer plate (12) is provided with reinforcing ribs (121) protruding from the upper and lower sides thereof; the reinforcing ribs (121) on the upper side of the second layer plate (12) abut against the lower side of the first flange (20); the reinforcing ribs (121) on the lower side of the second layer plate (12) abut against the upper side of the second flange (21); and the spacing between the reinforcing ribs (121) on the upper side of the second layer plate (12) and the reinforcing ribs (121) on the lower side is the same as the spacing between the first flange (20) and the second flange (21).

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