Special tool for debugging opening and closing speed of spring operating mechanism of circuit breaker

Abstract

The invention relates to the technical field of circuit breaker operation and maintenance, and discloses a circuit breaker spring operating mechanism opening and closing speed debugging special tool which comprises an energy storage spring debugging special tool and an opening and closing spring debugging special tool. The special energy storage spring debugging tool and the special closing and opening spring debugging tool are the same in structure and each comprise an installation frame and a jack, the jacks are located in the installation frames, and the installation frames can be inserted from the bottom of the circuit breaker box and are detachably connected with the spring barrels. And after the mounting frame is connected with the spring barrel, the jack can be in contact with a spring tray of the energy storage spring assembly or the switching-on and switching-off spring assembly and can drive the energy storage spring assembly or the switching-on and switching-off spring assembly to ascend and descend. Through the special tool, the breaker spring can be rapidly disassembled and replaced. And the operation state of the circuit breaker spring can be detected, and the compression amount of the circuit breaker spring can be detected, so that the elastic potential energy of the spring can be accurately controlled, and the debugging accuracy and precision can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker operation and maintenance, and in particular to a special tool for debugging the opening and closing speed of a circuit breaker spring operating mechanism. Background Art

[0002] In the current process of adjusting the opening and closing speed of the circuit breaker spring operating mechanism, there are indeed a series of problems, which are specifically reflected in the following aspects:

[0003] 1. Difficult operation: Currently, the elastic coefficient of the spring is relatively large, making it extremely complicated and laborious to manually adjust its elastic coefficient. The adjustment process often requires the cooperation of multiple people to ensure the correctness and safety of the adjustment. This operation method not only reduces work efficiency, but also increases safety risks during operation, which may lead to accidents.

[0004] 2. Insufficient precision: Since the debugging process mostly relies on manual work, it is difficult to accurately control the elastic potential energy of the energy storage spring. This imprecise adjustment directly affects the accuracy and precision of the circuit breaker operation, which may pose a potential risk to the stable operation of the power grid. Especially under high load or emergency conditions, the problem of insufficient precision is particularly prominent, which may cause the circuit breaker to fail to respond at the appropriate time.

[0005] 3. Lack of special tools: There is a lack of special debugging tools for spring circuit breakers on the market, which makes maintenance personnel face many inconveniences when performing maintenance. Existing tools are usually not targeted and accurate, which makes it impossible for maintenance personnel to adjust spring circuit breakers quickly and effectively. The lack of such tools not only prolongs the maintenance time, but may also affect the normal use of the equipment and the stability of the power grid.

[0006] 4. Lack of real-time monitoring: Although the performance of springs is relatively stable under normal circumstances, they may become weak during long-term use. However, there is currently a lack of effective real-time monitoring tools to track the status of springs. This results in the equipment being unable to detect and handle the spring weakness that affects its function in a timely manner, increasing the risk of equipment failure. Effective monitoring tools can issue an alarm in a timely manner when the spring performance deteriorates, thereby ensuring the stability and safety of the equipment.

[0007] In summary, there are a series of problems in the debugging and maintenance process of the spring operating mechanism, such as cumbersome operation, lack of precision, lack of tools and insufficient real-time monitoring. These problems directly affect the performance of the equipment and the overall safety of the power grid, and need to be given enough attention and effective solutions should be taken. Summary of the invention

[0008] In order to solve the above problems, the present invention provides a special tool for debugging the opening and closing speed of the spring operating mechanism of a circuit breaker. The special tool reduces the dependence on external technical support and reduces the high cost required for each adjustment; improves work efficiency, reduces power outage time and labor costs, and thus saves overall operation and maintenance costs; precise control and debugging can improve the reliability and stability of circuit breaker operation, reduce the risk of power grid accidents caused by misoperation or equipment failure, and improve operational safety.

[0009] The technical solution adopted by the present invention is:

[0010] A special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, which includes a special tool for debugging the energy storage spring and a special tool for debugging the opening and closing spring;

[0011] The special tool for debugging the energy storage spring and the special tool for debugging the closing and opening spring have the same structure and both include a mounting frame and a jack. The jack is located in the mounting frame. The mounting frame can be inserted from the bottom of the circuit breaker box and can be detachably connected to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly. After the mounting frame is connected to the spring barrel, the jack can contact the spring tray of the energy storage spring assembly or the closing and opening spring assembly, and can drive the energy storage spring assembly or the closing and opening spring assembly to rise and fall.

[0012] Furthermore, the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism also includes a pressure sensor installed between the jack and the spring tray, a laser displacement sensor installed on the mounting frame, and a collection module wirelessly connected to the pressure sensor, the laser displacement sensor and the jack.

[0013] Furthermore, the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism also includes a detachable speed detector installed in the circuit breaker box. The speed detector can detect the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact. The speed detector is wirelessly connected to the acquisition module.

[0014] A circuit breaker spring replacement method, based on the above-mentioned circuit breaker spring operating mechanism opening and closing speed debugging special tool, comprises the following steps:

[0015] Step 1: All circuits where the circuit breaker is located are powered off;

[0016] Step 2: insert the mounting frame of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and detachably connect it to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly, and at the same time, the jack contacts the spring tray of the energy storage spring assembly or the closing and opening spring assembly;

[0017] Step 3: Start the jack of the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, and slowly lift the energy storage spring assembly or the closing and opening spring assembly until the pin connecting the top of the spring pull rod with other components is free of force;

[0018] Step 4, remove the pin connecting the top of the spring pull rod with other components of the circuit breaker;

[0019] Step 5, start the jack again to drive the spring pull rod of the energy storage spring assembly or the closing and opening spring assembly to lower, so that the energy storage spring and the closing and opening spring are in a stress-free state;

[0020] Step 6, separate the mounting frame from the spring barrel, at which point the energy storage spring assembly or the energy storage spring assembly, the closing and opening spring, the spring tray, and the spring pull rod can be freely disassembled from below the circuit breaker;

[0021] Step 7. After replacing the energy storage spring or the closing and opening spring, repeat steps 2 and 3 to slowly lift the energy storage spring assembly or the closing and opening spring assembly to extend the spring pull rod, and install the pin shaft to connect the spring pull rod to other parts of the circuit breaker.

[0022] A method for detecting the operating state of a circuit breaker spring is provided. The method is based on the above-mentioned special tool for debugging the opening and closing speed of a circuit breaker spring operating mechanism, and comprises the following steps:

[0023] Step 1: All circuits where the circuit breaker is located are powered off;

[0024] Step 2: insert the mounting frame of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and connect it to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly; at the same time, through the fine-tuning jack, the jack drives the pressure sensor to contact the spring tray of the energy storage spring assembly or the closing and opening spring assembly;

[0025] Step 3: The jack of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly or the closing and opening spring assembly to perform a spring compression operation;

[0026] Step 4: During the spring compression operation, the pressure sensor and the laser displacement sensor respectively collect the spring force data and the spring compression data, and transmit them to the acquisition module;

[0027] Step 5: The acquisition module calculates the spring force based on the spring force data and the spring compression data, and compares it with the set value, thereby giving a spring operation status judgment result and displaying it on the display screen.

[0028] Furthermore, after a spring compression operation is performed, the acquisition module obtains the spring force F based on the pressure sensor and obtains the spring deformation ΔL based on the laser displacement sensor;

[0029] From F = ΔL × K, the calculation formula of the spring elastic coefficient K is derived as follows:

[0030] The acquisition module calculates the spring elastic coefficient based on the calculation formula of the spring elastic coefficient K, and compares the calculation result with the standard spring elastic coefficient K in the product manual. 标准 By comparison, the spring operating status can be determined as normal, weak, or aged.

[0031] A method for detecting the compression amount of a circuit breaker spring, the method for detecting the operating state of the circuit breaker spring is based on the above-mentioned special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, and comprises the following steps:

[0032] Step 1: All circuits where the circuit breaker is located are powered off;

[0033] Step 2: insert the mounting frames of the two sets of special tools for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and connect them to the spring barrels of the energy storage spring assembly and the closing and opening spring assembly; at the same time, through the fine-tuning jack, the jack drives the pressure sensor to contact the spring tray of the energy storage spring assembly and the closing and opening spring assembly;

[0034] Step 3: The jack of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly and the closing and opening spring assembly to perform two spring compression operations;

[0035] Step 4: During the two compression operations of the spring, the pressure sensor and the laser displacement sensor respectively collect the spring force data and the spring compression data, and transmit them to the acquisition module; at the same time, the speed detector detects the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact, and transmits the detection data to the acquisition module;

[0036] Step 5: The acquisition module calculates the spring compression based on the spring force data, spring compression data, and transmission part and moving contact speed detection data, compares it with the set value, and gives the circuit breaker spring compression adjustment amount, which is displayed on the display screen.

[0037] Further, in step 5, the set value calculation includes the following process:

[0038] Step 5.1, the acquisition module calculates the spring force and compression, and the calculation formula is as follows:

[0039]

[0040] Wherein, F is the force of the energy storage spring obtained by the pressure sensor 12; ΔL is the deformation of the energy storage spring obtained by the laser displacement sensor 13;

[0041] During the energy transfer process, the energy storage motor activates the energy storage spring, and the energy storage spring generates elastic potential energy Ep. The calculation formula of the elastic potential energy Ep of the energy storage spring is as follows:

[0042]

[0043] Step 5.2, since the energy storage spring and the closing and opening spring are both compressed twice in step 4, the laser displacement sensor in the energy storage spring debugging special tool obtains the energy storage spring deformation ΔL1 and ΔL2, and the speed detector in the energy storage spring debugging special tool obtains the speeds V1 and V2 of the transmission part and the moving contact;

[0044] At the same time, the pressure sensor in the special tool for debugging the opening spring provides the acquisition module with the opening spring force F'; the calculation formula of the spring elastic coefficient K is used to obtain the opening spring elastic coefficient K'; the deformation of the closing and opening spring ΔL' is obtained based on the laser displacement sensor; based on the above data, the elastic potential energy Ep of the opening spring is obtained through the spring elastic potential energy formula 1 .

[0045]

[0046] Based on the measurements of pressure, velocity, and compression, the resulting formula is as follows:

[0047]

[0048] When the energy storage spring is in action, it converts energy into friction work and gravitational potential energy of the vertical transmission parts and moving contacts during the movement. Since this part of energy does not change with the change of external parameters, it is collectively referred to as E1. The motion potential energy of the transmission parts and moving contacts is E0.

[0049] The movement time of the transmission part and the moving contact is short and the speed is fast. It is analogous to uniform linear motion. The movement potential energy of the transmission part and the moving contact After substitution, we get:

[0050]

[0051] In step 4, the energy storage spring and the closing and opening spring are compressed twice, and the following is obtained:

[0052]

[0053]

[0054] To calculate the mass and constant energy, the above two formulas need to be rearranged to obtain the calculation formulas for the mass M and E1 of the transmission part relative to the energy storage spring:

[0055]

[0056]

[0057] Step 5.3, based on the required speed V of the circuit breaker 标准 , substitute into the following calculation formula:

[0058]

[0059] Get the standard energy storage spring deformation ΔL 储能标准 ;

[0060]

[0061] The calculated K, E1, Ep 1 Substituting , M into the formula, we can get the standard energy storage spring deformation ΔL 储能标准 This is the value set in step 5;

[0062] For the setting value of the closing and opening spring, the principle is similar to the above process, and the standard closing and opening spring deformation ΔL is obtained 分闸标准 .

[0063] Furthermore, the acquisition module is based on the standard spring deformation ΔL 标准 , and the actual spring deformation ΔL obtained based on the laser displacement sensor 实际 Make a comparison to determine the working status of the spring;

[0064] If ΔL 标准 >ΔL 实际 , the spring compression is insufficient, and the spring compression adjustment amount is ΔL 调 =ΔL 标准 -ΔL 实际 ;

[0065] If ΔL 标准 <ΔL 实际 , the spring compression is too large, and the spring compression adjustment amount is ΔL 调 =ΔL 实际 -ΔL 标准 .

[0066] Beneficial effects of the present invention:

[0067] The above-mentioned special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism has the following beneficial effects:

[0068] 1. Reduce operational difficulties and improve efficiency: The traditional method of adjusting the speed of the spring operating mechanism of the circuit breaker is very difficult and inefficient because it requires manual adjustment of the spring with a large elastic coefficient. The special tool for debugging the speed of the spring operating mechanism of the circuit breaker can greatly simplify the operation process, reduce the difficulty of operation, and thus improve work efficiency.

[0069] 2. Reduce dependence on external technical support and save costs: In the past, adjustment work often required the support of the manufacturer's technical staff, which not only increased the time cost, but also accompanied by high expenses. Through the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, it can reduce dependence on external technical support and save production costs.

[0070] 3. Improve accuracy: It is difficult to accurately control the elastic potential energy of the energy storage spring during manual debugging, which affects the performance and safe operation of the circuit breaker. This special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism can achieve precise control of the elastic potential energy of the spring through the application of sensor technology and control system, and improve the accuracy and precision of debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0072] Figure 1 It is a schematic diagram of the circuit breaker spring operating mechanism after the special tool for debugging the opening and closing speed of the circuit breaker of the present invention is installed;

[0073] Figure 2 It is a working principle diagram of the special tool for debugging the opening and closing speed of the spring operating mechanism of the circuit breaker of the present invention;

[0074] Figure 3 It is a structural schematic diagram of the acquisition module of the present invention;

[0075] Figure 4 Schematic diagram of the installation position of the laser displacement sensor of the present invention;

[0076] In the figure, 1. Special tool for debugging energy storage spring, 2. Special tool for debugging closing and opening spring, 3. Mounting frame, 4. Jack, 5. Spring barrel, 6. Energy storage spring, 7. Closing and opening spring, 8. Spring tray, 9. Spring pull rod, 10. Pin shaft, 11. Crank arm, 12. Pressure sensor, 13. Laser displacement sensor, 14. Acquisition module, 15. Communication module, 16. Display screen, 17. Switch, 18. Charging port. DETAILED DESCRIPTION

[0077] The following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0078] Example 1

[0079] In view of the fact that there are a series of problems in the debugging and maintenance process of the spring operating mechanism, such as complicated operation, insufficient precision, missing tools and insufficient real-time monitoring, this embodiment provides a special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism.

[0080] After the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism is installed, Figure 1 and Figure 2 As shown, the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism includes a special tool for debugging an energy storage spring 1 and a special tool for debugging a closing and opening spring 2. The special tool for debugging an energy storage spring 1 and the special tool for debugging a closing and opening spring 2 have the same structure and both include a mounting frame 3 and a jack 4. The jack 4 is located in the mounting frame 3. The mounting frame 3 can be inserted from the bottom of the circuit breaker box and detachably connected to the spring barrel 5 of the energy storage spring assembly or the closing and opening spring assembly; after the mounting frame 3 is connected to the spring barrel 5, the jack 4 can contact the spring tray 8 of the energy storage spring assembly or the closing and opening spring assembly, and can drive the energy storage spring assembly or the closing and opening spring assembly to rise and fall.

[0081] In order to facilitate the special working principle of the circuit breaker spring operating mechanism opening and closing speed debugging, the structure of the energy storage spring assembly or the closing and opening spring assembly is described as follows: Figure 1 and Figure 2 As shown, the energy storage spring assembly or the closing and opening spring assembly includes a spring barrel 5, the energy storage spring 6 and the closing and opening spring 7 are located in the spring barrel 5, the spring tray 8 is located at the bottom of the energy storage spring 6 and the closing and opening spring 7, the spring tray 8 is connected to the spring pull rod 9 located in the energy storage spring 6 and the closing and opening spring 7, the top of the spring pull rod 9 extends to the outside of the spring barrel 5, and is connected to other components of the circuit breaker through the pin 10, such as: the spring pull rod 9 of the closing and opening spring assembly is connected to the crank arm 11 through the pin 10, and the spring pull rod 9 of the energy storage spring assembly is connected to the energy storage motor through the pin 10. Whether the energy storage spring 6 or the closing and opening spring 7 is replaced, the spring pull rod 9 needs to be moved upward so that a certain distance is generated between the pin 10 and the spring barrel 5. After the pin 10 is disengaged, the pin 10 and other linkage components can be removed. After the pin 10 is removed, the energy storage spring 6, the closing and opening spring 7, the spring pull rod 9, and the spring tray 8 can be moved out of the bottom of the spring barrel 5.

[0082] Based on the above-mentioned special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, this embodiment provides a method for replacing the circuit breaker spring, and the specific steps are as follows:

[0083] Step 1: All circuits where the circuit breaker is located are powered off;

[0084] Step 2: insert the mounting frame 3 of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and detachably connect it to the spring barrel 5 of the energy storage spring assembly or the closing and opening spring assembly, and at the same time, the jack 4 contacts the spring tray 8 of the energy storage spring assembly or the closing and opening spring assembly;

[0085] Step 3, start the jack 4 of the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, and slowly lift the energy storage spring assembly or the closing and opening spring assembly until the pin 10 connecting the top of the spring pull rod 9 with other components is not stressed;

[0086] Step 4, removing the pin 10 connecting the top of the spring pull rod 9 with other components of the circuit breaker;

[0087] Step 5, start the jack 4 again to drive the spring pull rod 9 of the energy storage spring assembly or the closing and opening spring assembly to lower, so that the energy storage spring 6 and the closing and opening spring 7 are in a stress-free state;

[0088] Step 6, separate the mounting frame 3 from the spring barrel 5, at which time the energy storage spring assembly or the energy storage spring 6, the closing and opening spring 7, the spring tray 8, and the spring pull rod 9 of the closing and opening spring assembly can be freely disassembled from the bottom of the circuit breaker;

[0089] Step 7, after replacing the energy storage spring 6 or the closing and opening spring 7, repeat steps 2 and 3 to slowly lift the energy storage spring assembly or the closing and opening spring assembly to extend the spring pull rod 9, and install the pin shaft 10 to connect the spring pull rod 9 with other components of the circuit breaker.

[0090] Example 2

[0091] Since the premise of replacing the energy storage spring assembly or the closing and opening spring assembly of the circuit breaker is that there is a problem with the operation of the spring, this embodiment makes the following improvements to the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism on the basis of Embodiment 1:

[0092] like Figure 1 , Figure 2 and Figure 4As shown in FIG. 1 , the circuit breaker spring operating mechanism opening and closing speed debugging special tool also includes a pressure sensor 12 installed between the jack 4 and the spring tray, a laser displacement sensor 13 installed on the mounting frame 3, and a collection module 14 wirelessly connected to the pressure sensor 12, the laser displacement sensor 13 and the jack 4. Since the commercially available pressure sensor 12 and the laser displacement sensor 13 do not have data transmission function, Figure 2 As shown, in this embodiment, a communication module 15 connected to the pressure sensor 12 and the laser displacement sensor 13 by wire is also provided, and the detection data of the pressure sensor 12 and the laser displacement sensor 13 can be transmitted to the acquisition module 14 by using the communication module 15. Figure 3 As shown, the acquisition module 14 is provided with a display screen 16, a switch 17, and a charging port 18, and is internally provided with a communication module 15 and a processor, and an algorithm program is written in the processor.

[0093] Based on the optimized special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, this embodiment provides a method for detecting the operating state of the circuit breaker spring, and the specific steps are as follows:

[0094] Step 1: All circuits where the circuit breaker is located are powered off;

[0095] Step 2: insert the mounting frame 3 of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box and connect it to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly; at the same time, through the fine-tuning jack 4, the jack 4 drives the pressure sensor 12 to contact the spring tray of the energy storage spring assembly or the closing and opening spring assembly;

[0096] Step 3: The jack 4 of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly or the closing and opening spring assembly to perform a spring compression operation;

[0097] Step 4: During the spring compression operation, the pressure sensor 12 and the laser displacement sensor 13 respectively collect the spring force data and the spring compression data, and transmit them to the collection module 14;

[0098] Step 5: the acquisition module 14 calculates the spring force based on the spring force data and the spring compression data, and compares it with the set value, thereby providing a spring operation status determination result, and displaying it on the display screen 16.

[0099] Specifically, after a spring compression operation is performed, the acquisition module 14 obtains the spring force F based on the pressure sensor 12 and obtains the spring deformation ΔL based on the laser displacement sensor 13;

[0100] From F = ΔL × K, the calculation formula of the spring elastic coefficient K is derived as follows:

[0101] The calculation formula of the spring elastic coefficient K can be written into the processor. The acquisition module 14 calculates the spring elastic coefficient based on the calculation formula of the spring elastic coefficient K, and compares the calculation result with the standard spring elastic coefficient in the product manual to determine the operating status of the spring: normal, weak, or aged.

[0102] Example 3

[0103] On the basis of Example 2, in addition to detecting the spring running state, it is also necessary to detect the compression of the circuit breaker spring. By detecting the compression of the circuit breaker spring, the compression of the circuit breaker energy storage spring and the closing and opening spring can be adjusted in time to ensure the accuracy and stability of the closing and opening speed of the circuit breaker. Therefore, in this embodiment, on the basis of Example 2, the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism is improved as follows:

[0104] The special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism also includes a detachable speed detector installed in the circuit breaker box, which is not shown in the figure; the speed detector can detect the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact, and the speed detector is wirelessly connected to the acquisition module 14.

[0105] Based on the optimized special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, this embodiment provides a method for detecting the compression amount of the circuit breaker spring, and the specific steps are as follows:

[0106] Step 1: All circuits where the circuit breaker is located are powered off;

[0107] Step 2: insert the mounting frame 3 of the two sets of special tools for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and connect them to the spring barrels of the energy storage spring assembly and the closing and opening spring assembly; at the same time, through the fine-tuning jack 4, the jack 4 drives the pressure sensor 12 to contact the spring tray of the energy storage spring assembly and the closing and opening spring assembly;

[0108] Step 3, the jack 4 of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly and the closing and opening spring assembly to perform two spring compression operations;

[0109] Step 4: During the two compression operations of the spring, the pressure sensor 12 and the laser displacement sensor 13 respectively collect the spring force data and the spring compression data, and transmit them to the acquisition module 14; at the same time, the speed detector detects the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact, and transmits the detection data to the acquisition module 14;

[0110] Step 5, the acquisition module 14 calculates the spring compression based on the spring force data, the spring compression data, and the transmission part and moving contact speed detection data, and compares it with the set value, and gives the circuit breaker spring compression adjustment amount, and displays it on the display screen 16.

[0111] Since the closing and opening springs of the circuit breaker are associated with the energy storage springs of the circuit breaker during the closing and opening operations of the circuit breaker, the correlation between the two needs to be considered when setting the set value in step 5. The set value in this embodiment needs to be specifically calculated before being set. The set value calculation includes the following process:

[0112] Take the setting value of the energy storage spring as an example:

[0113] Step 5.1, the acquisition module 14 calculates the spring force and compression, and the calculation formula is as follows:

[0114]

[0115] Wherein, F is the force of the energy storage spring obtained by the pressure sensor 12; ΔL is the deformation of the energy storage spring obtained by the laser displacement sensor 13.

[0116] During the energy transfer process, the energy storage motor activates the energy storage spring, and the energy storage spring generates elastic potential energy Ep. The calculation formula of the elastic potential energy Ep of the energy storage spring is as follows:

[0117]

[0118] Step 5.2, since the energy storage spring and the closing and opening spring are both compressed twice in step 4, the laser displacement sensor 13 in the energy storage spring debugging special tool 1 obtains the energy storage spring deformation ΔL1 and ΔL2, and the speed detector in the energy storage spring debugging special tool 1 obtains the speeds V1 and V2 of the transmission part and the moving contact;

[0119] At the same time, the pressure sensor 12 in the special tool 2 for debugging the opening spring provides the acquisition module 14 with the force F' of the opening spring; the calculation formula of the elastic coefficient K of the spring is used to obtain the elastic coefficient K' of the opening spring; the deformation ΔL' of the closing and opening spring is obtained based on the laser displacement sensor 13; based on the above data, the elastic potential energy Ep of the opening spring is obtained through the elastic potential energy formula of the spring 1 .

[0120]

[0121] Based on the measurements of pressure, velocity, and compression, the resulting formula is as follows:

[0122]

[0123] When the energy storage spring is in action, it converts energy into friction work and gravitational potential energy of the vertical transmission parts and moving contacts during the movement. Since this part of energy does not change with the change of external parameters, it is collectively referred to as E1. The motion potential energy of the transmission parts and moving contacts is E0.

[0124] The movement time of the transmission part and the moving contact is short and the speed is fast. It is analogous to uniform linear motion. The movement potential energy of the transmission part and the moving contact After substitution, we get:

[0125]

[0126] In step 4, the energy storage spring and the closing and opening spring are compressed twice, and the following is obtained:

[0127]

[0128] To calculate the mass and constant energy, the above two formulas need to be rearranged to obtain the calculation formulas for the mass M and E1 of the transmission part relative to the energy storage spring:

[0129]

[0130] Step 5.3, based on the required speed V of the circuit breaker 标准 , substitute into the following calculation formula:

[0131]

[0132] Get the standard energy storage spring deformation ΔL 储能标准 ;

[0133]

[0134] The calculated K, E1, Ep 1 Substituting , M into the formula, we can get the standard energy storage spring deformation ΔL 储能标准 This is the value set in step 5.

[0135] For the setting value of the closing and opening spring, the principle is similar to the above process, and the standard closing and opening spring deformation ΔL is obtained 分闸标准 .

[0136] The acquisition module 14 is based on the standard spring deformation ΔL 标准 , and the actual spring deformation ΔL obtained based on the laser displacement sensor 13 实际 Make a comparison to determine the working status of the spring;

[0137] If ΔL 标准 >ΔL 实际 , the spring compression is insufficient, and the spring compression adjustment amount is ΔL 调 =ΔL标准 -ΔL 实际 ;

[0138] If ΔL 标准 <ΔL 实际 , the spring compression is too large, and the spring compression adjustment amount is ΔL 调 =ΔL 实际 -ΔL 标准 .

[0139] The judgment criteria for the closing and opening springs are the same as those for the energy storage springs.

[0140] In summary, in combination with Example 1, Example 2, and Example 3, the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism can accurately measure the elastic coefficient of the circuit breaker spring to ensure the accuracy and stability of the opening and closing speed adjustment; it can realize automatic and accurate debugging and improve work efficiency.

[0141] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, characterized by: The special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism includes a special tool for debugging the energy storage spring and a special tool for debugging the closing and opening spring; The special tool for debugging the energy storage spring and the special tool for debugging the closing and opening spring have the same structure and both include a mounting frame and a jack. The jack is located in the mounting frame. The mounting frame can be inserted from the bottom of the circuit breaker box and can be detachably connected to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly. After the mounting frame is connected to the spring barrel, the jack can contact the spring tray of the energy storage spring assembly or the closing and opening spring assembly, and can drive the energy storage spring assembly or the closing and opening spring assembly to rise and fall.

2. The special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism according to claim 1 is characterized by: The special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism also includes a pressure sensor installed between the jack and the spring tray, a laser displacement sensor installed on the mounting frame, and a collection module wirelessly connected to the pressure sensor, the laser displacement sensor and the jack.

3. The special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism according to claim 2 is characterized by: The special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism also includes a detachable speed detector installed in the circuit breaker box. The speed detector can detect the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact. The speed detector is wirelessly connected to the acquisition module.

4. A circuit breaker spring replacement method, the circuit breaker spring replacement method is based on the circuit breaker spring operating mechanism opening and closing speed debugging special tool according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: All circuits where the circuit breaker is located are powered off; Step 2: insert the mounting frame of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and detachably connect it to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly, and at the same time, the jack contacts the spring tray of the energy storage spring assembly or the closing and opening spring assembly; Step 3: Start the jack of the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism, and slowly lift the energy storage spring assembly or the closing and opening spring assembly until the pin connecting the top of the spring pull rod with other components is free of force; Step 4, remove the pin connecting the top of the spring pull rod with other components of the circuit breaker; Step 5, start the jack again to drive the spring pull rod of the energy storage spring assembly or the closing and opening spring assembly to lower, so that the energy storage spring and the closing and opening spring are in a stress-free state; Step 6, separate the mounting frame from the spring barrel, at which point the energy storage spring assembly or the energy storage spring assembly, the closing and opening spring, the spring tray, and the spring pull rod can be freely disassembled from below the circuit breaker; Step 7. After replacing the energy storage spring or the closing and opening spring, repeat steps 2 and 3 to slowly lift the energy storage spring assembly or the closing and opening spring assembly to extend the spring pull rod, and install the pin shaft to connect the spring pull rod to other parts of the circuit breaker.

5. A method for detecting the operating status of a circuit breaker spring, the method for detecting the operating status of a circuit breaker spring is based on the special tool for debugging the opening and closing speed of a circuit breaker spring operating mechanism according to claim 2, characterized in that: The following steps are involved: Step 1: All circuits where the circuit breaker is located are powered off; Step 2: insert the mounting frame of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box and connect it to the spring barrel of the energy storage spring assembly or the closing and opening spring assembly; At the same time, by fine-tuning the jack, the jack drives the pressure sensor to contact the spring tray of the energy storage spring assembly or the closing and opening spring assembly; Step 3: The jack of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly or the closing and opening spring assembly to perform a spring compression operation; Step 4: During the spring compression operation, the pressure sensor and the laser displacement sensor respectively collect the spring force data and the spring compression data, and transmit them to the acquisition module; Step 5: The acquisition module calculates the spring force based on the spring force data and the spring compression data, and compares it with the set value, thereby giving a spring operation status judgment result and displaying it on the display screen.

6. The circuit breaker spring operating state detection method according to claim 5, characterized in that: After a spring compression operation, the acquisition module obtains the spring force F based on the pressure sensor and the spring deformation ΔL based on the laser displacement sensor; From F = ΔL × K, the calculation formula of the spring elastic coefficient K is derived as follows: The acquisition module calculates the spring elastic coefficient based on the calculation formula of the spring elastic coefficient K, and compares the calculation result with the standard spring elastic coefficient K in the product manual. 标准 By comparison, the spring operating status can be determined as normal, weak, or aged.

7. A method for detecting the compression amount of a circuit breaker spring, the method for detecting the operating state of the circuit breaker spring is based on the special tool for debugging the opening and closing speed of the circuit breaker spring operating mechanism according to claim 3, characterized in that: The following steps are involved: Step 1: All circuits where the circuit breaker is located are powered off; Step 2: insert the mounting frames of the two sets of special tools for debugging the closing and opening speed of the circuit breaker spring operating mechanism from the bottom of the circuit breaker box, and connect them to the spring barrels of the energy storage spring assembly and the closing and opening spring assembly; At the same time, by fine-tuning the jack, the jack drives the pressure sensor to contact the spring tray of the energy storage spring assembly and the closing and opening spring assembly; Step 3: The jack of the special tool for debugging the closing and opening speed of the circuit breaker spring operating mechanism drives the energy storage spring assembly and the closing and opening spring assembly to perform two spring compression operations; Step 4: During the two compression operations of the spring, the pressure sensor and the laser displacement sensor respectively collect the spring force data and the spring compression data, and transmit them to the acquisition module; at the same time, the speed detector detects the speed of the energy storage spring assembly or the closing and opening spring assembly transmission part and the moving contact, and transmits the detection data to the acquisition module; Step 5: The acquisition module calculates the spring compression based on the spring force data, spring compression data, and transmission part and moving contact speed detection data, compares it with the set value, and gives the circuit breaker spring compression adjustment amount, which is displayed on the display screen.

8. The circuit breaker spring compression detection method according to claim 7, characterized in that: In step 5, the set value calculation includes the following process: Step 5.1, the acquisition module calculates the spring force and compression, and the calculation formula is as follows: Where, F is the force of the energy storage spring obtained by the pressure sensor; ΔL is the deformation of the energy storage spring obtained by the laser displacement sensor; During the energy transfer process, the energy storage motor activates the energy storage spring, and the energy storage spring generates elastic potential energy Ep. The calculation formula of the elastic potential energy Ep of the energy storage spring is as follows: Step 5.2, since the energy storage spring and the closing and opening spring are both compressed twice in step 4, the laser displacement sensor in the energy storage spring debugging special tool obtains the energy storage spring deformation ΔL1 and ΔL2, and the speed detector in the energy storage spring debugging special tool obtains the speeds V1 and V2 of the transmission part and the moving contact; At the same time, the pressure sensor in the special tool for debugging the opening spring provides the acquisition module with the opening spring force F'; the opening spring elastic coefficient K' is obtained based on the calculation formula of the spring elastic coefficient K; The deformation of the closing and opening spring ΔL' is obtained based on the laser displacement sensor; based on the above data, the elastic potential energy Ep of the opening spring is obtained through the elastic potential energy formula of the spring. 1 ; Based on the measurements of pressure, velocity, and compression, the resulting formula is as follows: When the energy storage spring is in action, it converts energy into friction work and gravitational potential energy of the vertical transmission parts and moving contacts during the movement. Since this part of energy does not change with the change of external parameters, it is collectively referred to as E1. The motion potential energy of the transmission parts and moving contacts is E0. The movement time of the transmission part and the moving contact is short and the speed is fast. It is analogous to uniform linear motion. The movement potential energy of the transmission part and the moving contact After substitution, we get: In step 4, the energy storage spring and the closing and opening spring are compressed twice, and the following is obtained: To calculate the mass and constant energy, the above two formulas need to be rearranged to obtain the calculation formulas for the mass M and E1 of the transmission part relative to the energy storage spring: Step 5.3, based on the required speed V of the circuit breaker 标准 , substitute into the following calculation formula: Get the standard energy storage spring deformation ΔL 储能标准 ; The calculated K, E1, Ep 1 Substituting , M into the formula, we can get the standard energy storage spring deformation ΔL 储能标准 This is the value set in step 5; For the setting value of the closing and opening spring, the principle is similar to the above process, and the standard closing and opening spring deformation ΔL is obtained 分闸标准 .

9. The circuit breaker spring compression detection method according to claim 7, characterized in that: The acquisition module is based on the standard spring deformation ΔL 标准 , and the actual spring deformation ΔL obtained based on the laser displacement sensor 实际 Make a comparison to determine the working status of the spring; If ΔL 标准 >ΔL 实际 , the spring compression is insufficient, and the spring compression adjustment amount is ΔL 调 =ΔL 标准 -ΔL 实际 ; If ΔL 标准 <ΔL 实际 , the spring compression is too large, and the spring compression adjustment amount is ΔL 调 =ΔL 实际 -ΔL 标准 .

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