Device and method for fixing position of key in operation mode of combined electric appliance

Abstract

The invention discloses a device and method for fixing a key position of a combined electric appliance operation mode, and relates to the technical field of combined electric appliances in power plants and power systems. The invention aims to solve the problems that the switch-on success rate is influenced and the labor cost is increased due to operation mode key position offset caused by the vibration of the switch-on and switch-off operation of the combined electric appliance. According to the technical scheme, materials such as epoxy resin and organic glass are adopted to manufacture a fixing piece, and the combined electric appliance operation mode key is fixed to prevent position deviation; the fixing piece is reasonable in design, convenient to mount and dismount, and capable of ensuring that the combined electric appliance is normally switched on; according to the invention, the switching-on success rate is effectively improved, the downtime and the labor cost are reduced, and remarkable economic benefits and technical advantages are achieved; in addition, according to the method, the operation safety is enhanced, the misoperation risk caused by key loosening is avoided, the overall stability and reliability of the electric power system are improved, and powerful support is provided for intelligent and efficient operation of the electric power industry.

Description

Technical Field

[0001] The present invention relates to the technical field of combined electrical appliances in power plants and power systems, and in particular to a device and method for fixing the position of a key in an operating mode of a combined electrical appliance. Background Art

[0002] In power plants and power systems, circuit breakers, disconnectors, earthing switches and other combination electrical appliances are key equipment, and their stable and reliable operation is crucial to the overall safety and efficiency of the power system. The closing sequence between these devices must be strictly implemented in accordance with regulations to avoid possible serious accidents, such as closing with earthing switches. In order to ensure the correctness of the closing sequence, different position combinations of operating mode switches or operating mode keys are traditionally used for control.

[0003] Take the electrical brake short-circuit switch of a large hydropower station as an example. The device adopts the combination of circuit breaker and earthing knife switch. The closing sequence depends on the different position combinations of three operation keys. In daily operation, these three keys are usually kept in a vertical position. However, in actual operation, due to the vibration generated by the opening and closing operation of the combination electrical appliance, the position of one or even several keys often shifts. This shift is particularly significant when the turbine generator set is shut down and is intended to be put into electrical braking. Due to incorrect key position, the circuit breaker fails to close, which in turn causes electrical braking failure, prolonging the shutdown time and increasing the mechanical wear of the turbine generator set when rotating at a low speed.

[0004] In the face of this problem, the current countermeasures mainly include manually correcting the key position on site to ensure that the circuit breaker is closed correctly. However, this method is not only inefficient and affects the closing success rate, but also increases unnecessary labor costs. In addition, simple means such as strong tape were tried to fix the key in the early stage, but as time went by, the tape aged, deformed, and even broke frequently, resulting in repeated failures, and the problem could not be fundamentally solved.

[0005] In summary, the prior art has obvious deficiencies in ensuring the stability of the key position in the combination electrical appliance operation mode, and there is an urgent need for a more effective and reliable solution to deal with the problem of closing failure caused by key position deviation. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a device and method for fixing the position of a key for a combination electrical appliance operation mode, so as to solve the problem of closing failure caused by the position deviation of the key for the combination electrical appliance operation mode in a power plant and a power system, so as to overcome the limitations of the prior art of closing failure and frequent manual intervention caused by the key position deviation.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a device for fixing the position of a combination electrical appliance operation mode key, including a fixing piece, on which is provided a slot structure adapted to the combination electrical appliance operation mode key, the slot size is adjustable to match operation mode keys of different specifications, ensuring that the position of the operation mode key is firmly fixed, and the fixing piece and the operation mode key are fixed by card-engaging through the slot structure of the fixing piece.

[0008] In a preferred solution, the fixing piece is made of epoxy resin or organic glass.

[0009] In a preferred solution, the thickness of the fixing member is not less than 10 mm to ensure strength and stability.

[0010] In a preferred solution, the fixing piece is formed by cutting and slotting through mechanical processing, and the structural dimensions of the cut and slotted slots are precisely determined according to the actual dimensions of the operating mode key to ensure that the fixing piece matches the key.

[0011] In a preferred solution, the structural dimensions of the slot of the internal slot of the fixing member match the widest and thickest parts of the operating mode key to ensure that the fixing member can be firmly mounted on the operating mode key without causing the position of the operating mode key to shift.

[0012] In a preferred solution, the edge of the slot structure is processed with a smooth transition.

[0013] A method for fixing the position of a key in a combination electrical appliance operation mode is a device for fixing the position of a key in a combination electrical appliance operation mode as described in any one of the above, and the method comprises the following steps: Step 1: Make fixings; Step 2: Accurately design and process the fixing parts according to the relative position of the key in the combination electrical operation mode; Step 3: Put the fixing piece on each operation mode key of the combination electrical appliance, and fix the position of the operation mode key with the installation panel of the lock that controls the operation sequence of the combination electrical appliance; Step 4: Verify whether the operation mode key is stable after the fixing parts are installed, and ensure that the position of the operation mode key is effectively fixed.

[0014] In a preferred solution, the method further comprises a test step of opening and closing the combination electrical appliance after the fixing piece is installed, so as to verify whether the fixing piece is effective, prevent the position deviation of the operation mode key, and ensure the normal operation of the combination electrical appliance.

[0015] In a preferred embodiment, the method is applicable to combination electrical appliances including circuit breakers, isolating switches, earthing switches and the like, and the fixings can be manufactured and installed using a similar method according to the operation modes and key arrangements of different combination electrical appliances.

[0016] The present invention provides a device and method for fixing the position of a key in a combination electrical appliance operation mode, which has the following beneficial effects: 1. The present invention solves the problem of closing failure caused by key position deviation in the combined electrical appliance operation mode in power plants and power systems, and overcomes the limitations of closing failure and frequent manual intervention caused by key position deviation in the prior art; 2. The materials of the present invention are epoxy resin, organic glass and other materials with good stability and durability to make the fixing parts, so as to improve their anti-aging and anti-deformation capabilities; 3. The present invention uses epoxy resin, organic glass and other materials to make fixing parts to solve the problem of key position deviation caused by the vibration of the opening and closing operation. This method has not been reported in the prior art and has significant novelty; 4. The present invention is different from the temporary solutions such as strong adhesive tape previously used. The fixing parts in this solution have better durability and stability, and will not age, deform or break over time, thus ensuring a long-term and effective fixing effect; 5. The fixing part of the present invention is precisely machined, cut and slotted to ensure the matching degree with the operation mode key, which is convenient for installation and can ensure the fixing effect, and is convenient for quick installation and disassembly, maintenance and replacement; 6. The fixing member and the slots of the present invention are designed to be easily installed and removed, which is convenient for operation when the position of the operating mode key needs to be changed; 7. The present invention effectively avoids the closing failure caused by key deviation by fixing the position of the operation mode key, thereby improving the reliability and stability of the equipment operation; 8. The present invention does not require frequent on-site correction of key positions, thus reducing the consumption of human resources; 9. The technical solution of the present invention is not only applicable to specific combined electrical equipment, but also can provide a reference for key fixing of operation mode of other similar equipment; 10. The present invention ensures the normal operation of electrical braking and other operations, reduces the mechanical wear of equipment such as hydro-generator sets caused by improper operation, and thus prolongs the service life of the equipment; 11. The technical solution of the present invention is not only applicable to a specific electrical brake short-circuit switch of a hydropower station, but also proposes that a fixing piece can be made by a similar method according to the arrangement of switches or keys in other types of combined electrical operation modes, showing wide adaptability and application prospects; 12. The present invention also has high flexibility and scalability. Through modular design, it can easily adapt to electrical systems of different sizes and types, providing strong support for the intelligent and efficient transformation of the power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and implementation examples: Figure 1 This is a schematic diagram of key fixing in the operation mode of the prior art; Figure 2 This is a schematic diagram of the key fixing in the operation mode after the fixing piece is installed in the present invention; Figure 3 It is a schematic diagram of the separation of the fixing member and the operation mode key of the present invention; In the figure: fixing part 1, operation mode key 2, slot structure 3, installation panel 4. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments: Example 1 like Figures 1 to 3 As shown, a device for fixing the position of a combination electrical appliance operating mode key includes a fixing member 1, on which a slot structure 3 adapted to the combination electrical appliance operating mode key 2 is provided, and the slot size 3 is adjustable to match operating mode keys 2 of different specifications to ensure that the position of the operating mode key 3 is firmly fixed, and the fixing member 1 and the operating mode key 2 are fixed by being clamped and fixed by the slot structure 3 of the fixing member 1.

[0019] In this embodiment, the fixing member 1 is made of epoxy resin or organic glass.

[0020] Furthermore, the thickness of the fixing member 1 is not less than 10 mm to ensure strength and stability.

[0021] Furthermore, the fixing member 1 is formed by cutting and slotting through mechanical processing, and the size of the cut and slotted slot structure 3 is precisely determined according to the actual size of the operating mode key 2 to ensure that the fixing member 1 matches the key 2.

[0022] Furthermore, the size of the slot structure 3 slotted inside the fixing member 1 matches the widest and thickest parts of the operating mode key 2 to ensure that the fixing member 1 can be firmly mounted on the operating mode key 2 without causing the position of the operating mode key 2 to shift.

[0023] Furthermore, the edges of the slot structure 3 are processed with smooth transition.

[0024] Example 2 In another preferred embodiment, based on the above embodiment 1, Figures 1 to 3 As shown, a method for fixing the position of a key in a combination electrical appliance operation mode is a device for fixing the position of a key in a combination electrical appliance operation mode as described in any one of the above, and the method comprises the following steps: Step 1: Make fixing part 1; Step 2: According to the relative position of the key 2 of the combination electrical operation mode, the fixing part 1 is precisely designed and processed; Step 3: Sleeve the fixing member 1 onto each operation mode key 2 of the combination electrical appliance, and fix the position of the operation mode key 2 with the installation panel 4 of the lock for controlling the operation sequence of the combination electrical appliance; Step 4: Verify whether the operating key 2 is stable after the fixing part 1 is installed, and ensure that the position of the operating key 2 is effectively fixed.

[0025] In this embodiment, the method further comprises a test step of opening and closing the combination electrical appliance after the fixing member 1 is installed to verify whether the fixing member 1 is effective, prevent the position of the operation mode key 2 from being shifted, and ensure the normal operation of the combination electrical appliance.

[0026] Furthermore, the method is applicable to combination electrical appliances including circuit breakers, isolating switches, earthing switches and the like, and the fixing part 1 can be manufactured and installed using a similar method according to the operation modes and key 2 arrangements of different combination electrical appliances.

[0027] Example 3 In another preferred embodiment, based on the above-mentioned embodiments 1 and 2, this embodiment takes an electrical brake short-circuit switch of a large hydropower station as an example. The switch is composed of a circuit breaker, an isolating switch and an earthing switch, and its closing sequence is controlled by different position combinations of three operating mode keys.

[0028] 1. Production of fixing parts 1 Firstly, according to the size and shape of the operating key 2, select materials such as epoxy resin or plexiglass with a thickness of not less than 10 mm, and make the fixing part 1 through mechanical processing, cutting and grooving; the slot position of the fixing part 1 must accurately correspond to the relative position of the operating key 2, the length of the slot is equivalent to the widest part of the key, and the width of the slot is equivalent to the thickest part of the operating key 2, so as to ensure that the fixing part 1 can be firmly covered on the operating key 2 and will not hinder the normal operation of the operating key 2.

[0029] 2. Installation of fixing part 1 On each operating mode key 2 of the combination electrical appliance, a corresponding fixing part 1 is inserted respectively. The fixing part 1 should be designed to be easy to install and disassemble so that it can be easily removed when the key position needs to be changed. After the installation is completed, a test is required to ensure that the operating mode key 2 is firmly fixed and the combination electrical appliance can perform opening and closing operations normally.

[0030] 3. Effect verification After the fixture 1 is installed and tested to be correct, observe the performance of the combined electrical appliance in multiple opening and closing operations to confirm that the position of the operation mode key 2 has not shifted and the closing operation success rate is high, without the need for manual on-site correction of the position of the operation mode key 2; at the same time, record the closing status of the electrical brake switch to ensure that the electrical brake can be normally put into use and reduce the mechanical wear of the hydro-turbine generator set.

[0031] Example 4 In another preferred embodiment, based on the above embodiments 1, 2, and 3, in order to further verify the universality and diversity of the present invention, this embodiment takes another type of combination electrical appliance as an example, which also uses multiple operation keys 2 to control the closing sequence.

[0032] 1. Design and production of fixings According to the specific size and arrangement of the key of the new type of combination electrical appliance operation mode, the fixing part 1 is redesigned and manufactured; the material, thickness, slot size, etc. of the fixing part 1 need to be adjusted according to the characteristics of the new key to ensure the fixing effect.

[0033] 2. Installation and debugging Install the fixing part 1 on each operation mode key 2 of the new type of combination electrical appliance and perform debugging. During the debugging process, pay attention to check whether the fixing part is firm, whether the operation mode key 2 is easy to operate, and whether the combination electrical appliance can be opened and closed smoothly.

[0034] 3. Effect evaluation The actual effect of the fixture 1 is evaluated through long-term operation and multiple opening and closing operations; key indicators such as the closing success rate, electrical braking input status, and wear of the hydro-generator set are recorded and compared with the data before the fixture 1 is used to verify the actual effect of the present invention.

[0035] Compared with the prior art, the main innovation of the present invention is that a new fixing part is used to fix the position of the combination electrical appliance operation mode key 2; the fixing part 1 can not only effectively prevent the key from shifting due to vibration, but also has the characteristics of easy installation and disassembly, which is convenient for changing the key position when needed; in addition, the material selection and processing technology of the fixing part 1 have also been carefully considered to ensure that it can operate stably for a long time and adapt to various working environments; these technical features together constitute the core advantage of the present invention, which makes the present invention have a significant effect in solving the problem of combination electrical appliance closing failure.

[0036] In the preferred embodiment, the fixing part 1 is made of epoxy resin or plexiglass; the above arrangement ensures that the fixing part 1 has sufficient structural strength for stable support and reduces the overall burden due to its lightweight characteristics; at the same time, the good insulation and corrosion resistance of these two materials further improve the safety and service life of the product.

[0037] In the preferred solution, the thickness of the fixing part 1 is not less than 10 mm to ensure strength and stability; the above arrangement ensures that the fixing part 1 is not easily deformed or broken when bearing load, while enhancing the stability of the overall structure; in addition, the thickness design also takes into account the convenience of installation and the economy of materials, aiming to achieve the best cost-effectiveness.

[0038] In the preferred solution, the fixing part 1 is formed by mechanical cutting and slotting, and the size of the cut and slotted slot structure 3 is accurately determined according to the actual size of the operating mode key 2 to ensure that the fixing part 1 matches the key 2; the above arrangement not only ensures the close fit between the fixing part 1 and the operating mode key 2, but also improves the stability of the overall structure; at the same time, this design simplifies the assembly process, improves production efficiency, and meets the requirements of efficient and precise operation.

[0039] In the preferred solution, the size of the slot structure 3 slotted inside the fixing member 1 matches the widest and thickest parts of the operating mode key 2 to ensure that the fixing member 1 can be firmly mounted on the operating mode key 2 without causing the position of the operating mode key 2 to shift; the above arrangement further improves the operating accuracy and safety of the device.

[0040] In the preferred solution, the edge of the slot structure 3 is rounded; the above arrangement not only improves the overall aesthetics, but also significantly enhances the user experience and avoids the risk of scratches caused by sharp edges. At the same time, the design reduces friction and wear, and prolongs the service life of the fixing member 1 and the operation mode key 2.

[0041] In the preferred solution, the method further includes a test step of opening and closing the combination electrical appliance after the fixing part 1 is installed to verify whether the fixing part 1 is effective, prevent the position of the operation mode key 2 from being shifted, and ensure the normal operation of the combination electrical appliance; the above settings can significantly improve the operating stability and safety of the combination electrical appliance; in addition, the solution also adds a guide for regular inspection and maintenance to ensure the long-term reliable operation of the fixing part 1 and the entire system, further extending the life of the equipment.

[0042] In the preferred scheme, the method is applicable to combination electrical appliances including circuit breakers, disconnectors, earthing switches and other equipment, and the fixing part 1 can be manufactured and installed in a similar way according to the operation mode and arrangement mode of the key 2 of different combination electrical appliances; the above arrangement ensures the flexibility and compatibility of the fixing part 1, and at the same time, through the standardized design process, reduces the manufacturing and installation time and improves the work efficiency; in addition, the scheme also takes into account the convenience of maintenance, which is convenient for the subsequent inspection and replacement of the combination electrical appliances.

[0043] In summary, the present invention provides a solution to the problem of closing failure caused by position deviation of the key of the combination electrical appliance in the power plant and the power system, and overcomes the limitations of closing failure and frequent manual intervention caused by key position deviation in the prior art; the present invention proposes a new method specifically for fixing the position of the key of the combination electrical appliance operation mode. The present invention introduces new materials such as epoxy resin and organic glass, and combines mechanical processing technology to produce a fixing part 1 that can stably fix the operating mode key. This is a fundamental innovation to the traditional fixing method. This innovation not only solves practical problems, but also improves the operating reliability and efficiency of the combination electrical appliance. The design of the fixing part 1 of the present invention fully considers the relative position, size and installation convenience of the operating mode key, and ensures the fixation through precise grooving and mechanical processing. The fixing part 1 can not only be conveniently inserted into the key, but also ensure that the key will not move after being fixed, which is unprecedented in the field and has a high degree of innovation; the technical solution of the present invention fundamentally solves the problem of closing failure caused by the position deviation of the key 3 in the combination electrical operation mode, and there is no need to manually correct the key position on site, which not only improves the closing success rate, but also significantly reduces the labor cost and maintenance difficulty; at the same time, the fixing part 1 has excellent corrosion resistance and wear resistance, prolongs the service life, reduces the replacement frequency, further reduces the overall maintenance cost, and provides a solid guarantee for the stable operation of power plants and power systems; in addition, the modular design of the fixing part 1 of the present invention facilitates rapid installation and replacement, adapts to the needs of different models of combination electrical appliances, promotes the standardization and versatility of equipment, and makes important contributions to the sustainable development of the power industry.

Claims

1. A device for fixing the position of a key in a combination electrical appliance operation mode, characterized in that: The invention comprises a fixing member (1), on which a slot structure (3) adapted to a combination electrical appliance operating mode key (2) is arranged, the slot size (3) being adjustable to match operating mode keys (2) of different specifications, thereby ensuring that the position of the operating mode key (3) is firmly fixed, and the fixing member (1) and the operating mode key (2) are fixed by means of the slot structure (3) of the fixing member (1).

2. A method for fixing the key position of a combination electrical appliance according to claim 1, characterized in that: The fixing member (1) is made of epoxy resin or organic glass.

3. A method for fixing the key position of a combination electrical appliance according to claim 2, characterized in that: The thickness of the fixing member (1) is not less than 10 mm to ensure strength and stability.

4. A method for fixing the key position of a combination electrical appliance according to claim 3, characterized in that: The fixing member (1) is formed by cutting and slotting through mechanical processing, and the size of the slot structure (3) of the cutting and slotting is accurately determined according to the actual size of the operating mode key (2) to ensure that the fixing member (1) matches the key (2).

5. A method for fixing the key position of a combination electrical appliance according to claim 4, characterized in that: The size of the slot structure (3) slotted inside the fixing member (1) matches the widest and thickest parts of the operating mode key (2), so as to ensure that the fixing member (1) can be firmly sleeved on the operating mode key (2) without causing the position of the operating mode key (2) to shift.

6. A method for fixing the key position of a combination electrical appliance according to claim 5, characterized in that: The edge of the slot structure (3) is processed with a smooth transition.

7. A method for fixing the key position of a combination electrical appliance operation mode, characterized in that: A device for fixing the position of a key in a combination electrical appliance operation mode according to any one of claims 1 to 6 is provided, and the method comprises the following steps: Step 1: Make the fixing parts (1); Step 2: Accurately design and process the fixing part (1) according to the relative position of the key (2) of the combination electrical appliance operation mode; Step 3: Sleeve the fixing member (1) onto each operation mode key (2) of the combination electrical appliance, and fix the position of the operation mode key (2) to the installation panel (4) of the lock for controlling the operation sequence of the combination electrical appliance; Step 4: Verify whether the operating key (2) is secure after the fixing part (1) is installed, and ensure that the position of the operating key (2) is effectively fixed.

8. A method for fixing the key position of a combination electrical appliance according to claim 7, characterized in that: The method further comprises a test step of opening and closing the combination electrical appliance after the fixing member (1) is installed, so as to verify whether the fixing member (1) is effective, prevent the position of the operation mode key (2) from being shifted, and ensure the normal operation of the combination electrical appliance.

9. A method for fixing the key position of a combination electrical appliance according to claim 8, characterized in that: The method is applicable to combination electrical appliances including circuit breakers, isolating switches, earthing switches and the like, and the fixing part (1) can be manufactured and installed using a similar method according to the operation modes and key (2) arrangements of different combination electrical appliances.

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