Special tool for adjusting margin of inlet microswitch of road selector

Abstract

The utility model provides a special tool for adjusting the margin of a microswitch at an inlet of a road selector, which comprises a support rod and a bending part vertically connected to the support rod, the bending part is provided with a plug connector, the plug connector is vertical to the bending part, and the plug connector is configured to be capable of being clamped with a rotary column at the bottom of the microswitch. Through the design of the bending part and the plug connector, the special tool can easily enter a narrow space of an entrance of the road selector, a protective cover does not need to be dismantled, and operation steps are greatly simplified. And the plug connector is perfectly matched with the adjusting screw rod on the microswitch, so that the accuracy and the stability of adjustment can be ensured. By using the special tool provided by the utility model, an operator can quickly complete the margin adjustment of the microswitch, and the protective cover does not need to be repeatedly disassembled and reassembled, so that the working efficiency is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, specifically to a special tool for adjusting the margin of the micro switch at the inlet of a path selector. Background Technology

[0002] The flux maps measured by the in-core measurement system of a nuclear power plant are used to calibrate the core power, thermoelectric quadrant power tilt, and ladder diagram of the post-accident monitoring system in the external measurement system. The CPR1000 unit's in-core measurement system is a 5-channel system, equipped with 5 neutron probes, 5 group selectors, 5 path selectors, and 50 finger sleeves. Each flux map requires the collection of core neutron flux distribution values ​​within at least 40-50 finger sleeves. The core flux map results are calculated by software and then periodically input into other systems to ensure the accuracy of core parameters. The path selector has 10 channels, each corresponding to a unique finger sleeve. Its function is to guide the neutron probe into the designated finger sleeve according to commands from the host computer for neutron flux measurement. Each path selector inlet and outlet has a microswitch. These microswitches are used for path selector status control and feedback. Under normal operating conditions, the path selector inlet micro-adjustment is measured using a dummy probe. Normally, the microswitch activates when the roller contacts the dummy probe head at 1 / 3 of the ramp position. The probe body then lifts the microswitch, and it resets when the roller retracts to the 2 / 3 of the ramp position. If there is a deviation from this standard, use a special tool for adjusting the adjusting nut to adjust the microswitch. The adjustment screw on the top is used to meet the standard, but due to the narrow entrance of the road selector, the inaccessibility of ordinary Allen wrenches, and the existence of blind spots, it is very difficult to adjust the margin of the micro switch at the entrance each time. The current common adjustment method is to remove the protective cover at the entrance of the road selector, adjust the entrance micro switch according to the experience of the maintenance personnel, and after the adjustment is completed, reinstall the protective cover and use a dummy probe to verify its margin value. If it is found to be unqualified, the protective cover needs to be removed again, adjusted again, and reinstalled again. Then the margin value needs to be verified again using a dummy probe. The adjustment work needs to be repeated many times to complete the adjustment work, which is inefficient and cumbersome. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model proposes a special tool for adjusting the margin of the micro switch at the entrance of a road selector. This tool features a compact structure, simple operation, and easy access to the micro switch in narrow spaces, which can significantly improve adjustment efficiency and accuracy.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A special tool for adjusting the margin of a micro switch at the entrance of a road selector includes a support rod and a bent portion vertically connected to the support rod. A connector is provided on the bent portion, the connector is perpendicular to the bent portion, and the connector is configured to be compatible with the bottom rotating post of the micro switch.

[0005] Furthermore, it is preferred that the width and length of the bent portion are 20-35mm, the thickness is 1.5-2.5mm, and the width does not exceed 3mm.

[0006] Furthermore, it is preferable that the height of the connector does not exceed 2.5-3.5mm.

[0007] Furthermore, the connector is preferably an internal hexagonal structure.

[0008] Furthermore, the internal hexagonal head is preferably 1.7-1.9mm in size.

[0009] Furthermore, the adjustment tool preferably also includes a handle connected to the support rod.

[0010] Furthermore, it is preferable that the handle is provided with anti-slip protrusions or anti-slip grooves.

[0011] Furthermore, it is preferable that the length of the support rod is 100-150mm.

[0012] Compared with existing technologies, the beneficial effects of this utility model are as follows: The specialized tool of this utility model, through its bending section and plug-in design, can easily access the narrow space of the road selector inlet without removing the protective cover, greatly simplifying the operation. The plug-in perfectly matches the adjusting screw on the micro switch, ensuring the accuracy and stability of the adjustment. Using the specialized tool of this utility model, operators can quickly complete the margin adjustment of the micro switch without repeatedly removing and reinstalling the protective cover, significantly improving work efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the special tool for adjusting the margin of the micro switch at the inlet of the path selector in this utility model. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0017] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the protection scope claimed by this utility model.

[0020] This utility model provides a special tool for adjusting the margin of the micro switch at the inlet of a path selector, such as... Figure 1 As shown, the device includes a support rod 1 and a bent portion 2 vertically connected to the support rod 1. A connector 3 is provided on the bent portion 2, perpendicular to the bent portion 2, and configured to match and engage with the bottom rotating post of a micro switch. This design solves the problem of limited space, enabling tools to be accessed within confined spaces and allowing for multi-angle rotation and adjustment.

[0021] In some preferred embodiments, the support rod 1 is used to provide sufficient length to reach the micro switch at the entrance of the road selector. The length of the support rod 1 is preferably 100-150 mm to accommodate the adjustment needs of the micro switch at different locations and distances from the road selector entrance. This design allows the operator to adjust the length of the support rod 1 as needed, thereby making it easier to approach and operate the target micro switch.

[0022] The bent part 2 is vertically connected to the support rod 1 and is used to change the direction of the tool, allowing it to smoothly enter the narrow space of the road selector inlet. The width and length of the bent part 2 are 20-35mm, the thickness is 1.5-2.5mm, and the width does not exceed 3mm. This design allows the bent part 2 to be easily inserted into the narrow space of the road selector inlet, avoiding the problem of it being too long to fit into the bottom of the switch or too short to fit properly and prevent the knob from turning. At the same time, it ensures sufficient strength and rigidity to support the operation of the connector 3 without damaging surrounding components.

[0023] The connector 3 is disposed on the bend 2, perpendicular to the bend 2, and is used to mate with the bottom rotating post of the micro switch. The height of the connector 3 is preferably 2.5-3.5mm, and more preferably 3mm, to ensure that the connector 3 can smoothly mate with the bottom rotating post of the micro switch without interfering with surrounding structures or components due to excessive height. The connector 3 has an internal hexagonal structure, a common connection structure that allows for a tight fit with the bottom rotating post of the micro switch, providing stable torque transmission and enabling precise adjustment of the micro switch margin. The preferred inner diameter of the connector 3 is 1.7-1.9mm to accommodate the size requirements of the bottom rotating post of micro switches of different specifications and models. This design allows the tool of this invention to be applicable to the margin adjustment of micro switches at the inlet of various different models of road selectors.

[0024] In some preferred embodiments, the special tool also includes a handle 4, which is connected to the support rod 1. The handle 4 is designed to allow the operator to easily grip and operate the tool, improving the convenience and efficiency of operation. To further improve the stability and safety of operation, the outer surface of the handle 4 is provided with anti-slip protrusions or anti-slip grooves. These anti-slip structures can increase the friction of the operator's hand, preventing misoperation or safety accidents caused by hand slippage during operation.

[0025] In use, the operator inserts the tool of this embodiment into the narrow space of the road selector inlet and aligns the connector with the bottom pivot of the micro switch. Then, by rotating the handle, the connector is rotated, thereby achieving precise adjustment of the micro switch's margin. After adjustment, the operator removes the tool from the road selector inlet.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] 1. Improved Adjustment Efficiency and Accuracy: The tool of this invention can be easily inserted into the narrow space of the road selector inlet and directly engages with the bottom rotating post of the micro switch, thereby achieving precise adjustment of the micro switch margin. This not only improves adjustment efficiency but also ensures adjustment accuracy. By limiting the dimensions of each component of the tool, it can rotate 340° or even 360° around the micro switch without space restrictions, avoiding the inability to rotate due to excessive length or shortness.

[0028] 2. Reduced operational risks and costs: When using the tool of this utility model to adjust the margin of the micro switch, there is no need to remove the protective cover at the entrance of the road selector, thus avoiding the increased operational risks and costs caused by frequent disassembly and reassembly of the protective cover.

[0029] 3. Wide range of applications: The tool of this utility model is applicable to the margin adjustment of the inlet micro switch of various types and specifications of road selectors, and has a wide range of application prospects.

[0030] 4. Ease of operation: The design of the handle and anti-slip structure makes it easier and more stable for operators to hold the tool and operate it, improving the convenience and safety of operation.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A special tool for adjusting the margin of the micro switch at the inlet of a path selector, characterized in that, It includes a support rod and a bent portion vertically connected to the support rod. A connector is provided on the bent portion, the connector is perpendicular to the bent portion, and the connector is configured to engage with the bottom rotating post of the micro switch.

2. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 1, characterized in that, The bending section has a width and length of 20-35mm, a thickness of 1.5-2.5mm, and a width not exceeding 3mm.

3. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 1, characterized in that, The height of the connector shall not exceed 2.5-3.5mm.

4. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 1, characterized in that, The connector has an internal hexagonal structure.

5. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 4, characterized in that, The internal hexagonal socket has a diameter of 1.7-1.9 mm.

6. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 1, characterized in that, The adjustment tool also includes a handle connected to the support rod.

7. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 6, characterized in that, The handle is provided with anti-slip protrusions or anti-slip grooves.

8. The special tool for adjusting the margin of the micro switch at the inlet of the route selector according to claim 1, characterized in that, The length of the support rod is 100-150mm.

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