Direct-acting three-position switch and circuit breaker switch assembling and inspecting device

Abstract

The utility model discloses a direct-acting type three-position switch and circuit breaker switch assembling and inspecting device which comprises an isolating switch preassembling assembly, a circuit breaker positioning assembly and a three-position switch aligning assembly. The isolating switch preassembling assembly comprises a positioning plate, a positioning circular truncated cone and a limiting assembly. The positioning circular truncated cone is installed on the positioning plate, and the limiting assembly is installed on the positioning plate. The circuit breaker positioning assembly comprises a grounding sleeve and a positioning shaft, one end of the positioning shaft is installed in a three-station installation hole of the air box front plate through the grounding sleeve, and the other end of the positioning shaft penetrates through the three-station contact tube to be connected with the isolation switch, so that coaxial installation of the grounding sleeve, the three-station contact tube and the three-station isolation switch is achieved. Further, the circuit breaker is positioned through the three-station contact tube; and the three-station switch alignment assembly is used for realizing alignment installation of the grounding switch, the three-station contact tube and the isolating switch. The device has the advantages of simple structure, convenience in operation, reliable detection result and the like.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of gas-insulated metal-enclosed switchgear, specifically to a direct-acting three-position switch and circuit breaker assembly and inspection device. Background Technology

[0002] With the development of the global energy and power industry, petrochemical industry, and metallurgical industry, the demand for gas-insulated metal-enclosed switchgear (CGIS) is constantly increasing, and the market size is expected to grow at an astonishing compound annual growth rate. CGIS equipment achieves miniaturization of the overall structure by employing various insulation structures, and the overall structural development trend is towards modularization, standardization of basic components, and serialization of cabinet types. These designs undoubtedly make CGIS equipment more flexible and compact. For example... Figures 1-2 The diagram shows a compact CGIS gas box design that uses an upper direct-acting three-position switch and a lower solid-sealed pole-type circuit breaker structure.

[0003] The assembly of the gas box in CGIS equipment is a rigorous and meticulous process. The direct-acting three-position switch has a relatively complex structure. During use, the allowable assembly error of the entire switch is very small, about 0.03mm. This requires not only that the processed parts have sufficient precision, but also that the assembly error be kept within a certain range. When the required assembly precision is not achieved, gaps will exist between the parts, causing abnormal heating of the entire switchgear and uneven high local electric field. These will greatly affect the performance of the entire switch and cause serious damage.

[0004] In the actual installation process, due to the small space inside the air box, testing and calibration are quite difficult. If this problem is solved by manpower alone, it will undoubtedly require a lot of time and manpower, and the results after installation may not meet expectations. Utility Model Content

[0005] To address the technical problems existing in the prior art, this utility model provides a direct-acting three-position switch and circuit breaker assembly and inspection device that is simple in structure, easy to operate, and provides reliable test results.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows:

[0007] A direct-acting three-position switch and circuit breaker assembly and inspection device includes a disconnector pre-assembly assembly, a circuit breaker positioning assembly, and a three-position switch alignment assembly.

[0008] The pre-assembled assembly of the disconnecting switch includes a positioning plate, a positioning frustum, and a limiting assembly; the positioning frustum is mounted on the positioning plate and the number of frustums is the same as the number of disconnecting switches, and it is used to be inserted into the circular hole of the disconnecting switch to position the disconnecting switch; the limiting assembly is mounted on the positioning plate and the number of limiting assemblies is the same as the number of disconnecting switch contacts, and it is used to lock the disconnecting switch contacts for positioning.

[0009] The circuit breaker positioning assembly includes a grounding sleeve and a positioning shaft. One end of the positioning shaft is installed in the three-position mounting hole on the front plate of the gas box through the grounding sleeve, and the other end of the positioning shaft passes through the three-position contact tube and is connected to the disconnecting switch to achieve coaxial installation of the grounding sleeve, the three-position contact tube and the three-position disconnecting switch, thereby achieving the positioning of the circuit breaker through the three-position contact tube.

[0010] The three-position switch alignment component is used to achieve the aligned installation of the grounding switch, the three-position contact tube, and the disconnecting switch.

[0011] As a further improvement to the above technical solution:

[0012] The three-position switch alignment assembly includes a first clamping plate and a second clamping plate. The first clamping plate is fixed to the upper side of the three-position contact tube, and both ends of the first clamping plate are attached to the three-position grounding switch contact and the three-position isolating switch contact. The second clamping plate is fixed to the lower side of the three-position contact tube, and both ends of the second clamping plate are attached to the three-position contact tube and the three-position isolating switch contact.

[0013] One end of the first clamping plate is provided with a groove hole for holding the three-position disconnecting switch contact.

[0014] Both the first clamping plate and the second clamping plate are fixed to the three-position contact tube by screws.

[0015] The limiting assembly includes two limiting plates, which are used to clamp the three-position disconnect switch contacts to achieve positioning.

[0016] The circuit breaker positioning assembly further includes a first movable shaft and a second movable shaft; the two ends of the first movable shaft are respectively inserted into the inner holes of the grounding sleeve and the three-position contact tube, and the two ends of the second movable shaft are respectively inserted into the inner holes of the three-position contact tube and the disconnecting switch.

[0017] The pre-assembled assembly of the disconnecting switches includes a mounting plate, on which each disconnecting switch is mounted.

[0018] Compared with the prior art, the advantages of this utility model are:

[0019] This utility model relates to an assembly and testing device for direct-acting three-position switches and circuit breakers on CGIS gas boxes. This device can ensure high-quality assembly and long-term stable operation of direct-acting three-position switches and circuit breakers in compact CGIS gas boxes. The testing device is characterized by its simple structure, convenient operation, and reliable test results. Attached Figure Description

[0020] Figure 1 This is a topology diagram of the CGIS device of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the CGIS device of this utility model.

[0022] Figure 3 An exploded view of the pre-assembled components of the disconnector switch according to an embodiment of this utility model.

[0023] Figure 4 This is a structural diagram of the pre-assembled components of the disconnecting switch according to an embodiment of the present invention.

[0024] Figure 5 This is a diagram illustrating an embodiment of the circuit breaker positioning component of this utility model in a specific application.

[0025] Figure 6 The diagram shows the structure of the circuit breaker positioning component of this utility model in an embodiment; (a) is a front view; (b) is a sectional view.

[0026] Figure 7 This is a front view of the three-position switch alignment component of this utility model in an embodiment.

[0027] Figure 8 This is a perspective view of the three-position switch alignment component of this utility model in an embodiment.

[0028] Legend: 1. Gas box; 2. Circuit breaker; 201. Aluminum plate; 202. Pole post; 3. Three-position switch; 301. Grounding switch; 302. Three-position contact tube; 303. Disconnecting switch; 3031. Disconnecting contact; 3032. Insulator; 304. Moving contact; 305. C-type bar; 4. Disconnecting switch pre-assembly assembly; 401. Positioning plate; 402. Frustum; 403. Limiting assembly; 4031. Limiting plate; 404. Mounting plate; 5. Circuit breaker positioning assembly; 501. Positioning shaft; 502. First movable shaft; 503. Second movable shaft; 504. Grounding sleeve; 6. Three-position switch alignment assembly; 601. First clamping plate; 602. Second clamping plate. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 3 As shown, the direct-acting three-position switch and circuit breaker switch assembly and inspection device of this utility model includes a disconnect switch pre-assembly component 4, a circuit breaker positioning component 5, and a three-position switch alignment component 6.

[0031] The pre-assembled assembly 4 for the disconnector switch includes a positioning plate 401, a positioning frustum 402, and a limiting assembly 403 (two limiting plates 4031). The positioning frustum 402 is mounted on the positioning plate 401 and the number of frustums is the same as the number of disconnector switches 303. It is used to be inserted into the circular hole of the disconnector switch 303 to position the disconnector switch 303. The limiting assembly 403 is mounted on the positioning plate 401 and the number of limiting assemblies is the same as the number of contacts of the disconnector switch 303. It is used to lock the contacts of the disconnector switch 303 for positioning.

[0032] The circuit breaker positioning assembly 5 includes a grounding sleeve 504 and a positioning shaft 501. One end of the positioning shaft 501 is installed in the three-position mounting hole on the front plate of the gas box 1 through the grounding sleeve 504, and the other end of the positioning shaft 501 passes through the three-position contact tube 302 and is connected to the disconnecting switch 303 to achieve coaxial installation of the grounding sleeve 504, the three-position contact tube 302 and the three-position disconnecting switch 303, thereby achieving the positioning of the circuit breaker 2 through the three-position contact tube 302.

[0033] The three-position switch alignment component 6 is used to align and install the grounding switch 301, the three-position contact tube 302, and the disconnecting switch 303.

[0034] The assembly and testing device for the direct-acting three-position switch and circuit breaker switch on the CGIS gas box 1 can ensure high-quality assembly and long-term stable operation of the direct-acting three-position switch 3 and circuit breaker 2 in the compact CGIS gas box 1. The testing device has the characteristics of simple structure, convenient operation and reliable test results.

[0035] During the assembly of the CGIS gas box 1, the isolating contact 3031 needs to be pre-installed to ensure that when the drive shaft drives the moving contact 304 to rotate to the closed position, the moving contact 304 can correctly engage with the isolating slot of the isolating contact 3031, thus achieving closed conduction. For example... Figure 3 As shown, the pre-assembled assembly 4 of the disconnector switch of this utility model can improve assembly accuracy and efficiency. Figure 4 As shown, the positioning frustum 402 and the limiting assembly 403 are installed on the positioning plate 401. The relative flatness, perpendicularity and phase center distance between the three sets of three-position isolation contacts 3031 are positioned by the reference of the frustum 402 on the positioning plate 401 and the limiting plate 4031. Then, the isolation contacts 3031 are installed on the mounting plate 404 in sequence.

[0036] like Figures 5-6As shown, the circuit breaker positioning assembly 5 also includes a first movable shaft 502 and a second movable shaft 503; the first movable shaft 502 has its two ends inserted into the inner holes of the grounding sleeve 504 and the three-position contact tube 302, respectively, and the second movable shaft 503 has its two ends inserted into the inner holes of the three-position contact tube 302 and the disconnector switch 303, respectively. In practical applications, the direct-acting three-position switch 3 must first be precisely assembled using the circuit breaker positioning assembly 5, and then the C-type busbar 305 installed on the direct-acting three-position contact tube 302 is used to position and install the circuit breaker 2, specifically as follows:

[0037] First: Fix the grounding sleeve 504 in the three-position mounting hole on the front plate of the gas box 1 to achieve the first step of aligning the grounding sleeve 504.

[0038] Second: The positioning shaft 501 is passed through the grounding sleeve 504 to achieve concentric and aligned installation of the positioning shaft 501 and the grounding sleeve 504. The outer diameter surface of the positioning shaft 501 mates with the inner diameter surface of the first movable shaft 502 to achieve concentric and aligned installation of the positioning shaft 501 and the first movable shaft 502. The outer diameter surface of the first movable shaft 502 is used to fit over the inner diameter surface of the grounding sleeve 504 and the inner diameter surface of the three-position contact tube 302 to achieve concentric and aligned installation of the three-position contact tube 302 and the grounding sleeve 504.

[0039] By using the outer diameter surface of the second movable shaft 503 to fit the inner diameter surface of the three-position contact tube 302 and the inner diameter surface of the three-position isolation contact 3031, concentric and aligned installation of the three-position contact tube 302 and the three-position isolation contact 3031 can be achieved.

[0040] The grounding sleeve 504, the three-position contact tube 302, and the three-position isolating contact 3031 have now been correctly pre-installed in position 3 of the three-position switch.

[0041] Second: Place the mounting surface of the pole post 202 of the circuit breaker 2 against the bottom surface of the C-type busbar 305 installed on the three-position contact tube 302, and tighten the screws to achieve the correct installation position of the circuit breaker 2 on the gas box 1. Secure the circuit breaker 2 to the front plate of the gas box 1 with screws through the mounting aluminum plate 201 on the circuit breaker 2 to achieve the correct installation of the circuit breaker 2 on the CGIS gas box 1.

[0042] like Figure 5 As shown, before the initial installation steps of circuit breaker 2, the three-position isolating contact 3031 was pre-installed in the correct position and secured to the rear plate of gas box 1 with screws using the mounting plate 404 on the three-position isolating contact 3031, thus achieving the correct alignment of the three-position isolating contact 3031 on the CGIS gas box 1. Next, the three-position grounding contact, three-position moving contact 304, and three-position contact tube 302 are aligned and installed, specifically as follows:

[0043] like Figure 6As shown, first disassemble the positioning shaft 501, grounding sleeve 504, first movable shaft 502, three-position contact tube 302, and second movable shaft 503;

[0044] like Figures 7-8 As shown, the contacts of the three-position grounding switch 301 are fixed in the three-position mounting holes on the front plate of the gas box 1 to achieve the correct installation of the contacts of the three-position grounding switch 301.

[0045] The three-position grounding switch 301 and the three-position isolating contact 3031 have now been installed concentrically and aligned.

[0046] Insert the three-position moving contact 304 into the inner diameter surface of the three-position contact tube 302, with both end faces flush;

[0047] The three-position contact tube 302 is clamped by the first clamping plate 601 and the second clamping plate 602 and fixed with screws. The inner diameter circles of both ends of the first clamping plate 601 are in contact with the contacts of the three-position grounding switch 301 and the three-position disconnecting switch 303. The contacts of the three-position grounding switch 301 are fixed to the first clamping plate 601 with screws. The contacts of the three-position disconnecting switch 303 are matched with the groove holes on the first clamping plate 601, so that the three-position contact tube 302 is concentric and aligned with the contacts of the three-position grounding switch 301 and the three-position disconnecting switch 303.

[0048] Install the three-position contact tube 302 onto the pole 202 of the circuit breaker 2 using the C-type busbar 305, and tighten the screws.

[0049] The perfect fit of the inner diameter circles of the first clamping plate 601 and the second clamping plate 602 with the contacts of the three-position grounding switch 301 and the three-position isolating switch 303 can be used to check whether the upper-position grounding switch 301 and the three-position isolating contact 3031 have been concentrically and correctly installed. Removing the first clamping plate 601 and the second clamping plate 602 completes the assembly of the circuit breaker 2 and the three-position switch 3 on the gas box 1.

[0050] This tooling solution features a simple structure and precise positioning, ensuring accurate assembly and reliable operation of the three-position switch 3 and circuit breaker 2 in the CGIS equipment.

[0051] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A direct-acting three-position switch and circuit breaker switch assembly and testing device, characterized by, The switch disconnector pre-assembly (4), the circuit breaker positioning assembly (5) and the three-position switch alignment assembly (6) are included. The switch disconnector pre-assembly (4) includes a positioning plate (401), a positioning circular table (402) and a limiting assembly (403). The positioning circular table (402) is installed on the positioning plate (401) and has the same number as that of the switch disconnectors (303), and is used for being inserted into the circular hole of the switch disconnector (303) to position the switch disconnector (303). The limiting assembly (403) is installed on the positioning plate (401) and has the same number as that of the contacts of the switch disconnector (303), and is used for clamping the contact of the switch disconnector (303) to position the contact. The circuit breaker positioning assembly (5) includes a grounding sleeve (504) and a positioning shaft (501). One end of the positioning shaft (501) is installed in the three-position mounting hole of the front plate of the air tank (1) through the grounding sleeve (504), and the other end of the positioning shaft (501) is connected with the switch disconnector (303) through the three-position contact tube (302), so as to realize coaxial installation of the grounding sleeve (504), the three-position contact tube (302) and the three-position switch disconnector (303), and then realize positioning of the circuit breaker (2) through the three-position contact tube (302). The three-position switch alignment assembly (6) is used for realizing alignment installation of the grounding switch (301), the three-position contact tube (302) and the switch disconnector (303).

2. The straight three position switch and circuit breaker switch assembly and testing device of claim 1, wherein, The three-position switch alignment assembly (6) includes a first clamping plate (601) and a second clamping plate (602). The first clamping plate (601) is fixed to the upper side of the three-position contact tube (302), and the two ends of the first clamping plate (601) are attached to the contacts of the three-position grounding switch (301) and the three-position switch disconnector (303). The second clamping plate (602) is fixed to the lower side of the three-position contact tube (302), and the two ends of the second clamping plate (602) are attached to the three-position contact tube (302) and the contacts of the three-position switch disconnector (303).

3. The straight three position switch and circuit breaker switch assembly and testing device of claim 2, wherein, One end of the first clamping plate (601) is provided with a recess hole for clamping the contact of the three-position switch disconnector (303).

4. The straight three position switch and circuit breaker switch assembly and testing device of claim 2 or 3, wherein, The first clamping plate (601) and the second clamping plate (602) are fixed to the three-position contact tube (302) by screws.

5. The straight three position switch and circuit breaker switch assembly and testing device of claim 1 or 2 or 3, wherein, The limiting assembly (403) includes two limiting plates (4031) for clamping the contacts of the three-position switch disconnector (303) to realize positioning.

6. The straight three position switch and circuit breaker switch assembly and testing device of claim 1 or 2 or 3, wherein, The circuit breaker positioning assembly (5) further includes a first movable shaft (502) and a second movable shaft (503). The two ends of the first movable shaft (502) are respectively inserted into the inner holes of the grounding sleeve (504) and the three-position contact tube (302), and the two ends of the second movable shaft (503) are respectively inserted into the inner holes of the three-position contact tube (302) and the switch disconnector (303).

7. The straight three position switch and circuit breaker switch assembly and testing device of claim 1 or 2 or 3, wherein, The switch disconnector pre-assembly (4) includes a mounting plate (404), and each switch disconnector (303) is installed on the mounting plate (404).

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