Method for adjusting position degree of three-phase column of circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, and discloses a circuit breaker three-phase column position degree adjusting method, which is characterized in that a centering tool is matched with the top of a three-phase column, a limiting tool is matched with a conductor mounting boss on the side surface of the three-phase column, and then the phase position of the three-phase column is adjusted according to the concircle characteristic of the centering tool, so that the position degree of the three-phase column is adjusted. The center points of the three phase columns are concyclic, and the phase positions of the three phases are adjusted according to the structural characteristics of the limiting tool, so that the planes where the two conductor mounting bosses are located are coplanar and are parallel to the plane where the third conductor mounting boss is located, and the distance between the two planes meets the design requirement, and the position degree adjustment is completed. By means of the centering limiting tool, the position degree adjustment of the three-phase column can be comprehensively achieved, the three-phase column can meet the product design requirement, and the product quality is guaranteed.

Description

Technical Field

[0001] This invention belongs to the technical field of circuit breakers, specifically relating to a method for adjusting the position of three-phase phase links of a circuit breaker. Background Technology

[0002] As a key component of the power system, the circuit breaker's primary function is to disconnect or switch the current in transmission lines to protect the normal operation and safety of the power system. Because circuit breakers have strict uniformity requirements for three-phase opening and closing, including standard requirements for three-phase opening and closing times and three-phase circuit resistance, the installation accuracy between the various components of the three-phase phase posts on the moving / stationary sides must be strictly controlled during assembly. Currently, the alignment limit of the three-phase phase posts relies heavily on the experience of operators. Since each operator's experience value differs, it is difficult to unify the adjustment accuracy, and significant errors can occur. Therefore, during the opening and closing commissioning of the stationary and moving sides, poor alignment accuracy easily generates grinding chips, severely affecting the contact life and subsequent switching performance. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a method for adjusting the position of three-phase phase columns in a circuit breaker. By utilizing a centering fixture and a limiting fixture in combination, the center points of the stationary / moving three-phase phase columns are adjusted to be common to the same circle, and the relative positions of the conductor mounting bosses are adjusted. This method enables comprehensive adjustment of the position of the three-phase phase columns, ensuring that they meet product design requirements and guaranteeing product quality.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A method for adjusting the position of three-phase phase columns of a circuit breaker involves using a centering fixture that engages with the top of the three-phase phase columns, and a limiting fixture that engages with the conductor mounting bosses on the sides of the three-phase phase columns. Based on the cocircular characteristic of the centering fixture, the phase positions of the three phases are adjusted so that the center points of the three phase columns are cocircular. Simultaneously, based on the structural characteristics of the limiting fixture, the phase positions of the three phases are adjusted so that the planes containing two conductor mounting bosses are coplanar and parallel to the plane containing the third conductor mounting boss, with the distance between the two planes meeting design requirements, thus completing the position adjustment.

[0005] Furthermore, the following steps are included: Step 1: Install the stationary / moving side insulating cylinder and the stationary / moving side support cylinder onto the stationary / moving side support base, and pre-tighten them; Step 2: Insert the centering fixture into the three support cylinders from the top, then align the limiting fixture with the conductor mounting bosses on the three support cylinders, and use pins to engage them together. Step 3: Based on the tight fit between the limiting fixture and the conductor mounting boss, and the smooth insertion of the centering fixture and the support cylinder, tap and adjust the relevant parts until they meet the requirements, and then tighten all the bolts.

[0006] Furthermore, the centering fixture has a triangular structure and mates with the top surface of each support cylinder in the three-phase column; For the three-phase phase on the stationary side, the limiting fixture is referred to as the first limiting fixture, which has a T-shaped structure; For the three-phase phase on the moving side, the limiting fixture is referred to as the second limiting fixture, and it has a Π-shaped structure.

[0007] Furthermore, the centering fixture includes a base plate, which has an equilateral triangular structure, with a positioning sleeve disposed at each of its three vertices. Each positioning sleeve is engaged with the corresponding support sleeve of the three-phase column, and the outer diameter of the positioning sleeve and the inner diameter of the corresponding support sleeve are both transitionally fitted.

[0008] Furthermore, the substrate adopts a hollow design, with two handles on its top surface, and the free ends of the three positioning sleeves are exposed on the outer side of the bottom surface of the substrate.

[0009] Furthermore, the first limiting fixture includes a first side plate, which has a rectangular structure and a first support cylinder is vertically arranged in the center. The free end of the first support cylinder and both ends of the first side plate are provided with positioning blocks. Each positioning block is engaged with a corresponding conductor mounting boss, and a through hole is opened on it at the mounting hole position of the corresponding conductor mounting boss. A pin passes through the through hole and engages with the corresponding mounting hole. The planes on the two positioning blocks on the first side plate are coplanar and parallel to the plane on the positioning block on the first support cylinder; The vertical distance from the positioning block on the first support cylinder to the first side plate is equal to the vertical distance from the conductor mounting boss of one phase column to the plane where the conductor mounting bosses of the other two phase columns are located.

[0010] Furthermore, the second limiting fixture includes a second side plate, which has a rectangular structure. A second support cylinder is vertically arranged at each end of the second side plate. The two second support cylinders have the same structure. A positioning block is provided at the free end of the second side plate and at the center of the second side plate. Each positioning block cooperates with the corresponding conductor mounting boss. A through hole is opened at the mounting hole position of the corresponding conductor mounting boss. A pin passes through the through hole and cooperates with the corresponding mounting hole. The planes on the two second support cylinders are coplanar and parallel to the planes on the second side plate. The vertical distance from the positioning block on the second side plate to the second side plate is equal to the vertical distance from the conductor mounting boss of one phase column to the plane where the conductor mounting bosses of the other two phase columns are located.

[0011] Furthermore, handles are provided on the side of the first side plate relative to the first support cylinder and on the side of the second side plate relative to the second support cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are: (1) The centering tool and the limiting tool of the present invention are used together to ensure that the center points of the three phase columns on the stationary / moving side are in the same circle, and to adjust the relative position of the conductor mounting boss. This can fully realize the position adjustment of the three phase columns, so as to meet the product design requirements, ensure product quality, and at the same time effectively reduce assembly errors, ensure reliable subsequent docking of the product, and meet the performance characteristics requirements of the product.

[0013] First, pre-tightening is performed, then the positions of the three phases are limited by centering and limiting fixtures. Finally, fine adjustments, such as tapping, are made to ensure that the position of the three phases meets the design requirements. The whole operation is very simple, efficient, and practical.

[0014] (2) By using the base plate of an equilateral triangle, the center points of the positioning sleeves at the three vertices are made to be circular, thereby realizing the center point alignment adjustment of the three phase columns. The structure is simple and easy to process.

[0015] (3) Considering that the stationary three-phase and the dynamic three-phase need to be aligned, the first limiting fixture and the second limiting fixture of the present invention adopt a relative structural design, wherein the first limiting fixture is a T-shaped structure and the second limiting fixture is a Π-shaped structure. The positioning blocks on the first limiting fixture and the second limiting fixture are cleverly matched with the corresponding conductor mounting bosses, and the first limiting fixture and the second limiting fixture are fixed to the corresponding stationary / dynamic side by means of pins, thereby realizing the relative position adjustment between the three phase columns, i.e. the conductor mounting bosses, which can effectively improve the alignment accuracy between the dynamic side and the stationary side and make it more operable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall process of the present invention; Figure 2 This is a schematic diagram of the cooperation structure between the centering tool, the first limiting tool, and the stationary three-phase phase column of the present invention; Figure 3 This is a schematic diagram of the cooperation structure between the centering tool, the second limiting tool, and the moving side three-phase column of the present invention; Figure 4 This is a schematic diagram of the centering tooling of the present invention; Figure 5 This is a schematic diagram of the structure of the first limiting tooling of the present invention; Figure 6 This is a schematic diagram of the structure of the second limiting tooling of the present invention; Among them, 1-centering fixture, 101-base plate, 102-positioning sleeve, 2-first limiting fixture, 201-first side plate, 202-first support cylinder, 203-positioning block, 3-second limiting fixture, 301-second side plate, 302-second support cylinder, 4-handle, 5-pin. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments, in conjunction with the accompanying drawings, specifically illustrate the assembly work of the vacuum bulb for circuit breakers according to the present invention. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0018] like Figure 1-3 As shown, this invention provides a method for adjusting the position of three-phase phase columns of a circuit breaker. A centering fixture engages with the top of the three-phase phase column, while a limiting fixture engages with the conductor mounting bosses on the side of the three-phase phase column. Then, based on the cocircular characteristic of the centering fixture, the phase positions of the three phases are adjusted so that the center points of the three phase columns are cocircular. Simultaneously, based on the structural characteristics of the limiting fixture, the phase positions of the three phases are adjusted so that the planes containing two conductor mounting bosses are coplanar and parallel to the plane containing the third conductor mounting boss, with the distance between the two planes meeting design requirements, thus completing the position adjustment.

[0019] Specifically, first, install the stationary / moving side insulating cylinders and stationary / moving side support cylinders onto the stationary / moving side support bases and pre-tighten them to facilitate subsequent adjustments; then, insert the centering fixture into the three support cylinders from the top, align the limiting fixture with the conductor mounting bosses on the three support cylinders, and use pins to engage them; finally, based on the tight fit between the limiting fixture and the conductor mounting bosses and the smooth insertion of the centering fixture and the support cylinders, use a rubber mallet to tap and adjust the relevant parts until they meet the requirements, and then tighten all the bolts.

[0020] In this way, by using the centering fixture to adjust the concentricity of the center points of the three phase columns from the top, and by using the limiting fixture to adjust the relative positions of the conductor mounting bosses of the three phase columns, a comprehensive adjustment of the three phase columns can be completed, effectively reducing assembly errors, ensuring reliable subsequent product docking, and meeting the product's performance characteristics requirements.

[0021] Specifically as follows: like Figure 4As shown, the centering fixture 1 has a triangular structure and mates with the top surface of each support cylinder in the three-phase phase column. It includes a base plate 101, which has an equilateral triangular structure. A positioning sleeve 102 is installed through each of its three apex positions. The three positioning sleeves 102 have the same structure and mate with the corresponding support cylinder of the three-phase phase column. The outer diameter of the positioning sleeves 102 and the inner diameter of the corresponding support cylinder are all transition fit. Specifically, the base plate 101 can adopt a hollow design to minimize weight and facilitate carrying. Two handles 4 are provided on its top surface, and the free ends of the three positioning sleeves 102 are exposed on the outer side of the bottom surface of the base plate, which is convenient for insertion into the corresponding support cylinder of the three-phase phase column. The positioning sleeves 102 can be made of nylon material to reduce wear and improve service life.

[0022] The three phases corresponding to the static side, such as Figure 5 As shown, the limiting fixture is designated as the first limiting fixture 2, and has a T-shaped structure. It includes a first side plate 201, which is rectangular in shape. A first support cylinder 202 is vertically arranged in the center of the first side plate. Positioning blocks 203 are provided at the free end of the first support cylinder 202 and at both ends of the first side plate. Each positioning block 203 can be made of nylon material and mates with the corresponding conductor mounting boss. The positioning block 203 has the same structure as the conductor mounting boss, and through holes are opened on it at the mounting hole positions of the corresponding conductor mounting boss. These through holes can mate with pins 5, which pass through the through holes and mate with the corresponding mounting holes. At the same time, it is required that the planes of the two positioning blocks on the first side plate are coplanar and parallel to the plane of the positioning block on the first support cylinder. The distance from the positioning block on the first support cylinder to the center of the first side plate is equal to the distance from the two positioning blocks on the first side plate to their center, and is equal to the distance from the conductor mounting boss of one phase column to the plane where the conductor mounting bosses of the other two phase columns are located. These distances can be set according to design requirements.

[0023] When adjusting the stationary three-phase phase column using the position adjustment method of the present invention, the specific steps are as follows: First, install the stationary insulating cylinder and stationary support cylinder onto the stationary support base and pre-tighten them. Then, insert the three positioning sleeves 102 of the centering fixture 1 into the three support cylinders from the top. Next, align the three positioning blocks 203 of the first limiting fixture 2 with the conductor mounting bosses on the three support cylinders and insert the pins 5 from the through holes of the positioning blocks 203 on the first side plate 201 into the mounting holes of the corresponding conductor mounting bosses. Finally, based on the tight fit between the positioning blocks and the conductor mounting bosses and the smooth insertion of the positioning sleeves and support cylinders, use a rubber mallet to tap and adjust the relevant parts until they meet the requirements, and then tighten all the bolts.

[0024] For the three-phase phase of the moving side, such as Figure 6As shown, the limiting fixture is designated as the second limiting fixture 3, and has a Π-shaped structure. It includes a second side plate 301, which is rectangular in shape. A second support cylinder 302 is vertically arranged at each end of the second side plate 301. The two second support cylinders 302 have the same structure. A positioning block 203 is provided at the free end of the second side plate 301 and at the center of the second side plate 301. Each positioning block 203 can be made of nylon material and mates with the corresponding conductor mounting boss. Through holes are opened at the mounting hole positions of the corresponding conductor mounting bosses on the positioning blocks 203. The pin 5 passes through the through holes and mates with the corresponding mounting holes. It is required that the planes on the two second support cylinders are coplanar and parallel to the planes on the second side plate. The vertical distance between the positioning block 203 on the second side plate 301 and the line connecting the other two positioning blocks 203 is equal to half the length of the line, and the foot of the perpendicular coincides with the midpoint of the line. This vertical distance is equal to the distance between the conductor mounting boss of one phase column and the plane where the conductor mounting bosses of the other two phase columns are located. These distances can be set according to design requirements.

[0025] Similarly, during use, the positioning blocks 203 of the second limiting fixture 3 are engaged with the conductor mounting bosses corresponding to the moving phase column, and then the pins 5 are inserted into the positioning blocks 203 and the conductor mounting bosses of the corresponding phase column on the second side plate 301 to facilitate subsequent limiting adjustments.

[0026] In addition, for ease of carrying, handles 4 are provided on the side of the first side plate 201 relative to the first support cylinder 202 and on the side of the second side plate 301 relative to the second support cylinder 302, such as two handles 4 spaced apart.

[0027] When adjusting the position adjustment method of the present invention to adjust the three-phase phase column of the moving side, the specific steps are as follows: First, install the moving-side insulating cylinder and the moving-side support cylinder onto the moving-side support base and pre-tighten them. Then, insert the three positioning sleeves 102 of the centering fixture 1 into the three support cylinders from the top. Next, align the three positioning blocks 203 of the second limiting fixture 3 with the conductor mounting bosses on the three support cylinders and insert the pins 5 from the through holes of the positioning blocks 203 on the second side plate 301 into the mounting holes of the corresponding conductor mounting bosses. Finally, based on the tight fit between the positioning blocks and the conductor mounting bosses and the smooth insertion of the positioning sleeves and support cylinders, use a rubber mallet to tap and adjust the relevant parts until they meet the requirements, and then tighten all the bolts.

[0028] It is important to note that the schemes and arrangements of this application shown in the exemplary embodiments are merely exemplary. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., variations in various parameter values ​​(temperature, power, humidity, etc.), installation arrangements, names, colors, logical orders, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. Therefore, all such modifications are also included within the scope of the invention, and the order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "apparatus plus function" clause is intended to cover the structure described herein for performing the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the particular embodiments but extends to a variety of modifications that still fall within the scope of the appended claims.

[0029] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0030] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0031] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for adjusting the position of three-phase phase links of a circuit breaker, characterized in that: The centering fixture is used to mate with the top of the three-phase phase column, while the limiting fixture is used to mate with the conductor mounting bosses on the side of the three-phase phase column. Then, based on the cocircular characteristic of the centering fixture, the phase position of the three-phase phase is adjusted so that the center points of the three-phase phase columns are cocircular. At the same time, based on the structural characteristics of the limiting fixture, the phase position of the three-phase phase is adjusted so that the planes where the two conductor mounting bosses are located are coplanar and parallel to the plane where the third conductor mounting boss is located, and the distance between the two planes meets the design requirements, thus completing the position adjustment.

2. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 1, characterized in that... Includes the following steps: Step 1: Install the stationary / moving side insulating cylinder and the stationary / moving side support cylinder onto the stationary / moving side support base, and pre-tighten them; Step 2: Insert the centering fixture into the three support cylinders from the top, then align the limiting fixture with the conductor mounting bosses on the three support cylinders, and use pins to engage them together. Step 3: Based on the tight fit between the limiting fixture and the conductor mounting boss, and the smooth insertion of the centering fixture and the support cylinder, tap and adjust the relevant parts until they meet the requirements, and then tighten all the bolts.

3. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 2, characterized in that: The centering fixture has a triangular structure and fits with the top surface of each support cylinder in the three-phase column; For the three-phase phase on the stationary side, the limiting fixture is referred to as the first limiting fixture, which has a T-shaped structure; For the three-phase phase on the moving side, the limiting fixture is referred to as the second limiting fixture, and it has a Π-shaped structure.

4. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 3, characterized in that: The centering fixture includes a base plate, which has an equilateral triangular structure. A positioning sleeve is provided through each of its three vertices. Each positioning sleeve is matched with the corresponding support sleeve of the three phase column, and the outer diameter of the positioning sleeve and the inner diameter of the corresponding support sleeve are transitionally matched.

5. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 4, characterized in that: The substrate has a hollow design, with two handles on its top surface and the free ends of the three positioning sleeves exposed on the outer side of the bottom surface of the substrate.

6. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 3, characterized in that: The first limiting fixture includes a first side plate, which has a rectangular structure. A first support cylinder is vertically arranged in the center of the first side plate. Positioning blocks are provided at the free end of the first support cylinder and at both ends of the first side plate. Each positioning block cooperates with a corresponding conductor mounting boss. Through holes are opened at the mounting hole positions of the corresponding conductor mounting boss. A pin passes through the through hole and cooperates with the corresponding mounting hole. The planes on the two positioning blocks on the first side plate are coplanar and parallel to the plane on the positioning block on the first support cylinder; The vertical distance from the positioning block on the first support cylinder to the first side plate is equal to the vertical distance from the conductor mounting boss of one phase column to the plane where the conductor mounting bosses of the other two phase columns are located.

7. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 3, characterized in that: The second limiting fixture includes a second side plate, which has a rectangular structure. A second support cylinder is vertically arranged at each end of the second side plate. The two second support cylinders have the same structure. A positioning block is provided at the free end of the second side plate and at the center of the second side plate. Each positioning block is engaged with a corresponding conductor mounting boss. A through hole is opened at the mounting hole position of the corresponding conductor mounting boss. A pin passes through the through hole and engages with the corresponding mounting hole. The planes on the two second support cylinders are coplanar and parallel to the planes on the second side plate. The vertical distance from the positioning block on the second side plate to the second side plate is equal to the vertical distance from the conductor mounting boss of one phase column to the plane where the conductor mounting bosses of the other two phase columns are located.

8. The method for adjusting the position of three-phase phase links of a circuit breaker according to claim 6 or 7, characterized in that: Handles are provided on the side of the first side plate relative to the first support cylinder and on the side of the second side plate relative to the second support cylinder.

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