Manual switching force testing device of valve driving mechanism for nuclear power station

Abstract

The utility model relates to the technical field of testing equipment, in particular to a manual switching force testing device of a valve driving mechanism for a nuclear power station, which comprises a device main body, one side surface of the device main body is provided with a connecting hole, and the connecting hole is used for inserting a manual switching rod; a mounting groove is formed in the top surface of the device main body, a bushing is arranged in the mounting groove, and a torque testing device is inserted into the hollow part of the bushing. By accurately measuring and evaluating the manual switching force, it is ensured that an operator can operate safely and accurately in a manual mode, the risk of misoperation is reduced, the safety is improved, and meanwhile when power supply is interrupted or a control system breaks down, the manual switching force can be accurately measured and evaluated. The manual switching force testing device can ensure that the electric actuating mechanism can be rapidly and reliably switched to a manual mode, whether the design of the manual switching mechanism is reasonable or not can be verified through the manual switching force testing device, it is ensured that switching operation can be reliably completed in actual use, and the manual switching force testing device can be matched with manual switching rods of different models and torque testing devices.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a manual switching force testing device for valve drive mechanisms used in nuclear power plants. Background Technology

[0002] When switching an electric valve to manual mode, a switching lever needs to be actuated. Before leaving the factory and during routine maintenance, the force required to actuate the switching lever needs to be measured. Specifically, in the event of a power outage or control system failure, the electric actuator needs to be able to quickly switch to manual mode so that operators can manually control the valve or equipment, ensuring the safety and continuity of the production process. A manual switching force testing device can help verify the rationality of the manual switching mechanism design, prevent misoperation or jamming during manual operation, thereby improving the overall reliability of the system. Furthermore, the test results can be used to optimize the design of the manual switching mechanism, reducing operating force and improving operational comfort and efficiency.

[0003] During equipment maintenance and repair, manual switching force testing devices are typically used to periodically check the performance of manual switching mechanisms, promptly identify and repair potential problems, and extend the equipment's lifespan. When electric actuators experience difficulties or inability to manually switch, manual switching force testing devices can help technicians quickly diagnose the cause of the malfunction and take appropriate repair measures. The manual switching force testing device for valve drive mechanisms in nuclear power plants aims to solve technical problems that may arise when electric actuators operate in manual mode, accurately measure the force required for manual switching, and ensure the reliability and consistency of the measurement results.

[0004] Currently available manual switching force testing devices for valve drive mechanisms typically have poor compatibility, requiring different specifications of manual switching force testing devices for valve drive mechanisms to complete the test. Utility Model Content

[0005] In view of the problems existing in the background art, the present invention provides a hand switching force testing device for valve drive mechanisms in nuclear power plants that can be adapted to different hand switching levers and torque testing devices.

[0006] The technical solution of this utility model: a hand-operated switching force testing device for a valve drive mechanism in a nuclear power plant, comprising a device body, a connecting hole on one side of the device body for inserting a hand-operated switching rod; a mounting groove on the top surface of the device body, a bushing inside the mounting groove, and a torque testing device inserted into the hollow part of the bushing.

[0007] In an optional embodiment, the main body of the device includes a first clamping member, a second clamping member, and a fastener. The first clamping member and the second clamping member can be locked and fixed by the fastener. The first clamping member and the second clamping member have a first concave and a second concave respectively on their adjacent surfaces. When the first clamping member and the second clamping member are locked by the fastener, the first concave and the second concave are joined together to form a connecting hole for the insertion of the hand switch rod.

[0008] In an optional embodiment, the first clamping member has a threaded hole on one side, and the second clamping member has a through hole on one side. The through hole corresponds to the position of the threaded hole, and the threaded end of the fastener passes through the through hole and is threadedly connected to the threaded hole.

[0009] In an optional embodiment, the diameter of the through hole is larger than the outer diameter of the threaded end of the fastener, so that the second clamping member can move along the fastener.

[0010] In an optional embodiment, the threaded hole and the through hole are respectively located at the four corners of the first clamping member and the second clamping member.

[0011] In an optional embodiment, the mounting slot is rectangular.

[0012] In an optional embodiment, a dovetail groove is provided at the corner of the mounting groove, the axis of the dovetail groove is parallel to the axis of the threaded hole, and the bushing can be inserted into the mounting groove along the dovetail groove.

[0013] In an optional embodiment, both the first recess and the second recess are V-shaped, and the connecting hole formed when the first recess and the second recess are joined together is rectangular.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] By accurately measuring and evaluating the manual switching force, the system ensures that operators can operate safely and accurately in manual mode, reducing the risk of misoperation and improving safety. Furthermore, in the event of power outages or control system failures, the manual switching force testing device ensures that the electric actuator can quickly and reliably switch to manual mode, guaranteeing the safety of the production process. The testing device verifies the rationality of the manual switching mechanism's design, ensuring reliable switching operations in actual use, and is compatible with different models of manual switching levers and torque testing devices. Attached Figure Description

[0016] Figure 1A schematic diagram of the hand switching force testing device for a valve drive mechanism in a nuclear power plant, as shown in this embodiment of the present invention, is provided.

[0017] Figure 2 A front view of the manual switching force testing device for a valve drive mechanism in a nuclear power plant, as described in this embodiment of the present invention, is given.

[0018] Figure 3 A side view of the manual switching force testing device for the valve drive mechanism of a nuclear power plant in an embodiment of this utility model is provided.

[0019] Figure label:

[0020] 10 is the first clamping element; 11 is the first recess; 12 is the threaded hole; 13 is the dovetail groove; 20 is the second clamping element; 21 is the second recess; 22 is the through hole; 30 is the fastener; 40 is the connecting hole; 50 is the bushing. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "vertical", "horizontal", "inner", "outer", "front", "back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] like Figures 1 to 3 As shown in the figure, the hand switching force testing device for the valve drive mechanism of the nuclear power plant proposed in this embodiment includes a device body. One side of the device body is provided with a connection hole 40 for inserting a hand switching rod. The top surface of the device body is provided with a mounting groove, and a bushing 50 is provided in the mounting groove. The hollow part of the bushing 50 is for inserting a torque testing device.

[0024] In this embodiment, the main body of the device is cubic in shape. A connecting hole 40 is provided on one side of the main body of the device to facilitate the insertion of the manual switching rod. An installation groove is provided on the top surface of the device to place the torque wrench of the testing device. A bushing 50 is provided inside the installation groove. The bushing 50 has different specifications to accommodate different specifications of testing devices. At the same time, the torque testing device can be used to measure the force required for the manual switching mechanism of the valve (the measured torque is divided by the lever arm to obtain the corresponding force), which further facilitates the verification of whether the design is reasonable.

[0025] Furthermore, the main body of the device includes a first clamping member 10, a second clamping member 20, and a fastener 30. The first clamping member 10 and the second clamping member 20 can be locked and fixed by the fastener 30. The first clamping member 10 and the second clamping member 20 are respectively provided with a first recess 11 and a second recess 21 on their side surfaces that are close to each other. When the first clamping member 10 and the second clamping member 20 are locked by the fastener 30, the first recess 11 and the second recess 21 are joined together to form a connecting hole 40 for the insertion of the hand switching rod.

[0026] In this embodiment, the main body of the device is divided into a first clamping member 10 and a second clamping member 20, and a first recess 11 and a second recess 21 are respectively provided on the first clamping member 10 and the second clamping member 20. This facilitates assembly and allows the mounting block to fix the hand switch lever. Furthermore, in this embodiment, both the first recess 11 and the second recess 21 are V-shaped, and the connecting hole 40 formed after the first recess 11 and the second recess 21 are assembled is rectangular. The V-shaped design of the first recess 11 and the second recess 21 makes it easier to insert the hand switch lever, and the detachable design of the first clamping member 10 and the second clamping member 20, which can be locked by the fastener 30, allows the device to clamp hand switch levers of different specifications.

[0027] It should be noted that the first clamping member 10 has a threaded hole 12 on one side, and the second clamping member 20 has a through hole 22 on one side. The through hole 22 corresponds to the threaded hole 12. The threaded end of the fastener 30 passes through the through hole 22 and is threadedly connected to the threaded hole 12. In this embodiment, the fastener 30 is a countersunk bolt. The threaded end of the countersunk bolt passes through the through hole 22 and is threadedly connected to the threaded hole 12, thereby connecting the first clamping member 10 and the second clamping member 20 and locking them in place. Furthermore, the diameter of the through hole 22 is larger than the outer diameter of the threaded end of the fastener 30, so that the second clamping member 20 can move along the fastener 30. To facilitate the adjustment of the position of the second clamping member 20, so that the second clamping member 20 and the first clamping member 10 can quickly clamp the hand switch lever, and by cooperating with the fastener 30, clamping hand switch levers of different specifications can be achieved.

[0028] Threaded holes 12 and through holes 22 are respectively located at the four corners of the first clamping member 10 and the second clamping member 20. In order to maintain the stability between the first clamping member 10 and the second clamping member 20, the fasteners 30 are also installed at the four corners by setting the threaded holes 12 and through holes 22, so as to ensure the clamping effect of the hand switch rod.

[0029] It should be noted that the mounting slot is rectangular. A dovetail groove 13 is provided at the corner of the mounting slot, with the axis of the dovetail groove 13 parallel to the axis of the threaded hole 12. The bushing 50 can be inserted into the mounting slot along the dovetail groove 13. The dovetail groove 13 facilitates the guiding installation of the bushing 50. Furthermore, the detachable design of the bushing 50 within the mounting slot allows for the replacement of different sizes of bushings 50 to adapt to different torque testing devices.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above specific embodiments are merely one or more preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A manual switching force testing device for valve drive mechanisms in nuclear power plants, characterized in that, The device includes a main body, one side of which has a connection hole for inserting a hand switch rod; the top surface of the main body has a mounting groove, and a bushing is provided inside the mounting groove, the hollow part of which is for inserting a torque testing device.

2. The manual switching force testing device for valve drive mechanism in nuclear power plants according to claim 1, characterized in that, The main body of the device includes a first clamping member, a second clamping member, and a fastener. The first clamping member and the second clamping member can be locked and fixed by the fastener. The first clamping member and the second clamping member have a first concave and a second concave respectively on their side surfaces that are close to each other. When the first clamping member and the second clamping member are locked by the fastener, the first concave and the second concave are joined together to form a connecting hole for the insertion of the hand switch rod.

3. The manual switching force testing device for valve drive mechanism in nuclear power plants according to claim 2, characterized in that, The first clamping member has a threaded hole on one side, and the second clamping member has a through hole on one side. The through hole corresponds to the position of the threaded hole, and the threaded end of the fastener passes through the through hole and is threadedly connected to the threaded hole.

4. The manual switching force testing device for a valve drive mechanism in a nuclear power plant according to claim 3, characterized in that, The diameter of the through hole is larger than the outer diameter of the threaded end of the fastener, so that the second clamping member can move along the fastener.

5. The manual switching force testing device for a valve drive mechanism in a nuclear power plant according to claim 3, characterized in that, The threaded hole and the through hole are respectively located at the four corners of the first clamping member and the second clamping member.

6. The manual switching force testing device for a valve drive mechanism in a nuclear power plant according to claim 3, characterized in that, The mounting slot is rectangular.

7. The manual switching force testing device for a valve drive mechanism in a nuclear power plant according to claim 6, characterized in that, A dovetail groove is provided at the corner of the mounting groove. The axis of the dovetail groove is parallel to the axis of the threaded hole, and the bushing can be inserted into the mounting groove along the dovetail groove.

8. The hand-switching force testing device for valve drive mechanism in nuclear power plants according to claim 2, characterized in that, Both the first and second recesses are V-shaped, and the connecting hole formed when the first and second recesses are joined together is rectangular.

Images