Valve measuring device and nuclear power station maintenance equipment

Abstract

The utility model provides a valve measuring device and nuclear power station maintenance equipment. The valve measuring device comprises a first plate body, a second plate body which is spaced from the first plate body in parallel, a third plate body which is connected with the first plate body and the second plate body, an adjusting mechanism which is arranged on the first plate body, an ejection mechanism which is arranged on the adjusting mechanism, and a measuring mechanism which is arranged on the second plate body. Wherein a fixing hole used for fixing the valve body is formed in the second plate body, the adjusting mechanism can adjust the position of the ejection mechanism so as to be aligned with the fixing hole, the ejection mechanism can eject out a valve element of the valve body, and the measuring mechanism measures the ejection length of the valve element after the ejection mechanism ejects out the valve element. By adopting the technical scheme, the accuracy degree of off-line measurement of the starting valve is improved, and the measurement operation is simplified.

Description

Valve measuring devices and nuclear power plant maintenance equipment Technical Field

[0001] This utility model relates to the technical field of nuclear power plant maintenance equipment, and more specifically, to a valve measuring device and nuclear power plant maintenance equipment. Background Technology

[0002] Currently, the online inspection and offline disassembly measurement of the cylinder head starter valve stroke and flexibility of MTU model diesel engines are carried out using a screwdriver or awl. After measuring, the tool is marked with a scale, and then the data is indirectly measured using a vernier caliper.

[0003] Currently, using screwdrivers or awls with markings for measurement is not very accurate and requires a high level of skill from the inspectors. It can also easily cause jamming during measurement and may even damage the start valve equipment.

[0004] The starter valve stroke measurement for MTU model diesel engines is a 1C inspection item, requiring an accuracy of 1mm; the starter valve disassembly stroke measurement is a 6C item, requiring an accuracy of 0.01mm. A single overhaul of two diesel engines requires measuring the stroke and flexibility of 40 starter valves. Existing maintenance procedures are inconvenient and cannot guarantee maintenance quality. Summary of the Invention

[0005] The purpose of this utility model is to provide a valve measuring device and nuclear power plant maintenance equipment to solve the technical problems of low measurement accuracy, inconvenient operation, and poor maintenance quality of existing valve maintenance tools.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] In a first aspect, a valve measuring device is provided, comprising:

[0008] A first plate, a second plate parallel to and spaced apart from the first plate, a third plate connecting the first plate and the second plate, an adjustment mechanism on the first plate, an ejection mechanism on the adjustment mechanism, and a measuring mechanism on the second plate; wherein the second plate has a fixing hole for fixing the valve body, the adjustment mechanism can adjust the position of the ejection mechanism to align with the fixing hole, the ejection mechanism can eject the valve core of the valve body, and the measuring mechanism measures the ejection length of the valve core after the ejection mechanism ejects the valve core.

[0009] By adopting the above technical solution, the accuracy of offline measurement of the start valve is improved and the measurement operation is simplified.

[0010] In one embodiment, the adjustment mechanism includes a first adjustment unit disposed on the first plate and a second adjustment unit disposed on the first adjustment unit. The first adjustment unit is capable of adjusting the position of the second adjustment unit in a first direction parallel to the first plate. The second adjustment unit is provided with the ejection mechanism, and the second adjustment unit is capable of adjusting the position of the ejection mechanism in a second direction parallel to the first plate, wherein the second direction is perpendicular to the first direction.

[0011] By adopting the above technical solution, the adjustment mechanism can adjust the position of the ejector mechanism in the first direction and the second direction parallel to the first plate, thereby improving the flexibility of the ejector mechanism adjustment.

[0012] In one embodiment, the first adjustment unit includes a first guide rail disposed on the first plate and parallel to the first direction, a first slider slidably disposed on the first guide rail, and a first driving member for driving the first slider to slide on the first guide rail; the second adjustment unit includes a second guide rail disposed on the first slider and parallel to the second direction, a second slider slidably disposed on the second guide rail, and a second driving member for driving the second slider to slide on the second guide rail; the ejection mechanism is disposed on the second slider.

[0013] By adopting the above technical solution, the first adjustment unit and the second adjustment unit have simple structures and are easy to implement.

[0014] In one embodiment, the first driving member and the second driving member are lead screw members, each lead screw member including a lead rod and a nut threadedly connected to the lead rod. The lead rod of the first driving member is parallel to the first guide rail, and the nut of the first driving member is connected to the first sliding member. The lead rod of the second driving member is parallel to the second guide rail, and the nut of the second driving member is connected to the second sliding member.

[0015] By adopting the above technical solution, the driving function of the first driving component and the second driving component is realized.

[0016] In one embodiment, the ejection mechanism includes an ejection seat, a threaded component disposed in the ejection seat, and a push rod disposed on the threaded component. The ejection seat is disposed on the adjustment mechanism. The threaded component is threadedly connected to the ejection seat and is provided with a handle. The handle can drive the threaded component to rotate about an axis relative to the ejection seat. When the threaded component rotates about the axis, it extends or retracts relative to the ejection seat, thereby driving the push rod to extend or retract relative to the fixing hole.

[0017] By adopting the above technical solution, the valve core was ejected.

[0018] In one embodiment, the measuring mechanism includes a dial indicator disposed on the second plate and a measuring rod disposed on the dial indicator, the measuring rod being extendable relative to the dial indicator and positioned directly opposite the fixing hole.

[0019] By adopting the above technical solution, the measurement accuracy of the valve measuring device has been improved.

[0020] In one embodiment, the measuring mechanism further includes a clamping structure connected to the third plate, the clamping structure being disposed on the side of the second plate opposite to the first plate, the clamping structure being used to clamp the dial indicator.

[0021] By adopting the above technical solution, the dial indicator is easy to disassemble and assemble.

[0022] In one embodiment, the clamping structure is threadedly connected to the dial indicator.

[0023] By adopting the above technical solution, the dial indicator can be both easy to disassemble and install, and stable when fixed.

[0024] Secondly, a nuclear power plant maintenance equipment is provided, including an online valve measuring device and the aforementioned valve measuring device. The online valve measuring device is used to measure the valve body online, and the valve measuring device is used to measure the valve body after offline disassembly.

[0025] By adopting the above technical solution, based on the advantages of the valve measuring device of the above embodiment, the valve online measuring device of this embodiment also has the function of online detection of the start valve.

[0026] In one embodiment, the valve online measuring device includes a first rod and a second rod connected to the first rod. The second rod includes a first rod portion connected to the first rod, a clearance portion connected to the first rod portion, and a second rod portion connected to the clearance portion. The length direction of the first rod portion is perpendicular to the length direction of the first rod, the clearance portion forms a clearance space, and the length direction of the second rod portion is perpendicular to the length direction of the first rod.

[0027] By adopting the above technical solution, tools with appropriate diameters and shapes are designed and manufactured according to the internal structure and installation location of the starting valve, effectively eliminating the risk of equipment damage. Using this tool optimizes the maintenance process, making operation not only more convenient but also ensuring better maintenance quality. The valve online measuring device is designed with a suitable diameter based on the inlet size of the starting valve, eliminating the risk of tool jamming and equipment damage during measurement. The first rod at the top of the valve online measuring device eliminates the risk of personnel pinching their hands during measurement, as previously avoided by personnel touching nearby pipelines and other equipment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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.

[0029] Figure 1 is a three-dimensional structural diagram of the valve measuring device provided in an embodiment of this utility model.

[0030] Figure 2 is a three-dimensional structural diagram of the valve measuring device provided in an embodiment of this utility model.

[0031] The labels for the attached figures are as follows:

[0032] 100. Valve measuring device; 200. Valve online measuring device; 201. First rod; 202. Second rod; X, first direction; Y, second direction; 1. First plate; 2. Second plate; 3. Third plate; 4. Adjusting mechanism; 5. Ejection mechanism; 6. Measuring mechanism; 7. Valve body;

[0033] 21. Fixing hole; 41. First adjustment unit; 42. Second adjustment unit; 51. Ejector seat; 52. Threaded part; 53. Ejector rod; 54. Handle; 61. Dial indicator; 62. Measuring rod; 63. Clamping structure;

[0034] 411. First guide rail; 412. First slider; 413. First drive component; 421. Second guide rail; 422. Second slider; 423. Second drive component;

[0035] 2021, First pole section; 2022, Alternating section; 2023, Second pole section. Detailed Implementation

[0036] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 do not indicate that the device or element 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.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this utility model is described in more detail below with reference to specific embodiments:

[0040] As shown in Figures 1 and 2, this embodiment of the present invention provides a valve measuring device for measuring a start-up valve after offline disassembly. Currently, measuring start-up valves using a screwdriver or an awl with markings is inaccurate and requires highly skilled operators. The device is also prone to jamming during measurement, and may even damage the start-up valve. The valve measuring device provided in this embodiment improves measurement accuracy while reducing operational requirements. The following detailed description illustrates this process:

[0041] The valve measuring device 100 in this embodiment includes:

[0042] A first plate 1, a second plate 2 parallel to and spaced from the first plate 1, a third plate 3 connecting the first plate 1 and the second plate 2, an adjustment mechanism 4 on the first plate 1, an ejection mechanism 5 on the adjustment mechanism 4, and a measuring mechanism 6 on the second plate 2; wherein the second plate 2 is provided with a fixing hole 21 for fixing the valve body 7, the adjustment mechanism 4 can adjust the position of the ejection mechanism 5 to align with the fixing hole 21, the ejection mechanism 5 can eject the valve core of the valve body 7, and the measuring mechanism 6 measures the ejection length of the valve core after the ejection mechanism 5 ejects the valve core.

[0043] Here, it can be understood that the first plate 1 refers to the plate used to support the adjustment mechanism 4 and the ejection mechanism 5; the first plate 1 can be arranged laterally on the ground of the place to be measured;

[0044] The second plate 2 refers to the plate used to fix the valve body 7 of the starting valve; the second plate 2 is parallel and spaced apart from the first plate 1, and a space is reserved between the second plate 2 and the first plate 1 for the starting valve to be placed. The second plate 2 is provided with a fixing hole 21, the shape and size of the fixing hole 21 are matched with the shape and size of the valve body 7, so that the valve body 7 can be fixed in the fixing hole 21. For example, the outer diameter of the valve body 7 is slightly smaller than the diameter of the fixing hole 21, so that the valve body 7 and the fixing hole 21 are interference fit, thereby realizing the fixing of the valve body 7.

[0045] The third plate 3 refers to the plate used to fix and connect the first plate 1 and the second plate 2; the third plate 3 connects the first plate 1 and the second plate 2, so that the second plate 2 and the first plate 1 are arranged parallel and spaced apart.

[0046] The adjusting mechanism 4 is a mechanism used to adjust the position of the ejector mechanism 5 relative to the fixed hole 21; specifically, the adjusting mechanism 4 can drive the ejector mechanism 5 to move on the first plate 1, so that the ejector mechanism 5 can be aligned with the fixed hole 21.

[0047] The ejection mechanism 5 refers to the mechanism used to eject the valve core in the valve body 7;

[0048] Measuring mechanism 6 refers to the mechanism used to measure the stroke of valve body 7.

[0049] The working principle of the valve measuring device 100 provided in this embodiment is as follows:

[0050] After the start valve is taken offline, the valve body 7 of the start valve is fixed in the fixing hole 21. The operator operates the adjustment mechanism 4 to make the ejector mechanism 5 align with the valve body 7 of the start valve, and then ejects the valve core of the valve body 7 so that the measuring mechanism 6 contacts the valve core. The valve core continues to rise, and the operator observes the data change of the ejection length of the measuring mechanism 6 to finally obtain the measurement data.

[0051] By adopting the above technical solution, the accuracy of offline measurement of the start valve is improved and the measurement operation is simplified.

[0052] In one embodiment, the adjustment mechanism 4 includes a first adjustment unit 41 disposed on the first plate 1 and a second adjustment unit 42 disposed on the first adjustment unit 41. The first adjustment unit 41 can adjust the position of the second adjustment unit 42 in a first direction X parallel to the first plate 1. The second adjustment unit 42 is provided with an ejection mechanism 5, which can adjust the position of the ejection mechanism 5 in a second direction Y parallel to the first plate 1, wherein the second direction Y is perpendicular to the first direction X.

[0053] Here, it can be understood that the first adjustment unit 41 refers to the component used to adjust the position of the ejector mechanism 5 in the first direction X; specifically, the first adjustment unit 41 is provided on the first plate 1, and the first adjustment unit 41 is used to adjust the position of the second adjustment unit 42 in the first direction X, while the ejector mechanism 5 is provided on the second adjustment unit 42. In this way, the first adjustment unit 41 can adjust the position of the ejector mechanism 5 in the first direction X, which is parallel to the first plate 1. When the valve measuring device 100 is placed on the ground of the place to be measured, the first direction X is parallel to the ground; the second adjustment unit 42 is provided on the first adjustment unit 41, and the second adjustment unit 42 is provided with the ejector mechanism 5, that is, the second adjustment unit 42 can adjust the position of the ejector mechanism 5 in the second direction Y, which is parallel to the first plate 1 and perpendicular to the first direction X. That is, when the valve measuring device 100 is placed on the ground of the place to be measured, the second direction Y is parallel to the ground.

[0054] By adopting the above technical solution, the adjustment mechanism 4 can adjust the position of the ejector mechanism 5 in the first direction X and the second direction Y, which are parallel to the first plate 1, thereby improving the flexibility of the ejector mechanism 5 adjustment.

[0055] In one embodiment, the first adjustment unit 41 includes a first guide rail 411 disposed on the first plate 1 and parallel to the first direction X, a first slider 412 slidably disposed on the first guide rail 411, and a first driving member 413 driving the first slider 412 to slide on the first guide rail 411; the second adjustment unit 42 includes a second guide rail 421 disposed on the first slider 412 and parallel to the second direction Y, a second slider 422 slidably disposed on the second guide rail 421, and a second driving member 423 driving the second slider 422 to slide on the second guide rail 421; and an ejection mechanism 5 disposed on the second slider 422.

[0056] By adopting the above technical solution, the first adjustment unit 41 and the second adjustment unit 42 have simple structures and are easy to implement.

[0057] In one embodiment, the first drive member 413 and the second drive member 423 are lead screw members, each of which includes a lead screw and a nut threadedly connected to the lead screw. The lead screw of the first drive member 413 is parallel to the first guide rail 411, and the nut of the first drive member 413 is connected to the first sliding member 412. The lead screw of the second drive member 423 is parallel to the second guide rail 421, and the nut of the second drive member 423 is connected to the second sliding member 422.

[0058] Here, it can be understood that the function of the lead screw is to convert rotary motion into linear motion, while also possessing the characteristics of high precision, reversibility, and high efficiency, and having very low frictional resistance.

[0059] Specifically, the operator can achieve the driving action by rotating the lead screw.

[0060] By adopting the above technical solution, the driving function of the first driving component 413 and the second driving component 423 is realized.

[0061] In one embodiment, the ejection mechanism 5 includes an ejection seat 51, a threaded member 52 disposed in the ejection seat 51, and a push rod 53 disposed on the threaded member 52. The ejection seat 51 is disposed on the adjustment mechanism 4. The threaded member 52 is threadedly connected to the ejection seat 51 and is provided with a handle 54. The handle 54 can drive the threaded member 52 to rotate about an axis relative to the ejection seat 51. When the threaded member 52 rotates about an axis, it extends or retracts relative to the ejection seat 51, thereby driving the push rod 53 to extend or retract relative to the fixing hole 21.

[0062] Here, it can be understood that the ejector seat 51 has a threaded hole, and the threaded part 52 is threaded into the threaded hole. The threaded part 52 is connected to the ejector rod 53, and the threaded part 52 is used to drive the ejector rod 53 to move. The threaded part 52 is also provided with a handle 54, and the operator can drive the threaded part 52 to rotate around its own axis by operating the handle 54. When the threaded part 52 rotates around the axis, the threaded part 52 can extend and retract relative to the ejector seat 51. At the same time, the threaded part 52 drives the ejector rod 53 to extend and retract relative to the fixed hole 21. That is, the ejector rod 53 can eject the valve core of the valve body 7 fixed in the fixed hole 21.

[0063] By adopting the above technical solution, the valve core was ejected.

[0064] In one embodiment, the measuring mechanism 6 includes a dial indicator 61 disposed on the second plate 2 and a measuring rod 62 disposed on the dial indicator 61. The measuring rod 62 is telescopic relative to the dial indicator 61 and is positioned opposite the fixing hole 21.

[0065] Here, it can be understood that the dial indicator 61 is a general-purpose length measuring tool made using a precision rack and pinion mechanism. It typically consists of a measuring head, measuring rod 62, shock-absorbing spring, rack, gears, hairspring, dial, and pointer. The working principle of the dial indicator 61 is that the minute linear movement of the measuring rod caused by the measured dimension is amplified through gear transmission and converted into the rotation of the pointer on the dial, thus allowing the measurement to be read. The dial indicator 61 is a measuring instrument that uses rack and pinion or lever gear transmission to convert the linear displacement of the measuring rod into the angular displacement of the pointer.

[0066] By adopting the above technical solution, the measurement accuracy of the valve measuring device 100 has been improved.

[0067] In one embodiment, the measuring mechanism 6 further includes a clamping structure 63 connected to the third plate 3. The clamping structure 63 is located on the side of the second plate 2 opposite to the first plate 1 and is used to clamp the dial indicator 61.

[0068] Here, it can be understood that the clamping structure 63 can fix the dial indicator 61 by clamping or by threaded connection, so that the dial indicator 61 can be installed and removed from the clamping structure 63.

[0069] By adopting the above technical solution, the dial indicator 61 is easy to disassemble and assemble.

[0070] In one embodiment, the clamping structure 63 is threadedly connected to the dial indicator 61.

[0071] By adopting the above technical solution, the dial indicator 61 can be both easy to disassemble and install and stable when fixed.

[0072] It needs further explanation that the clamping structure 63 for holding the dial indicator 61 is designed so that the dial indicator 61 and the adjusting mechanism 4 can accurately measure the stroke of the starting valve with an accuracy of 0.01mm; the rotating rod of the ejector mechanism 5 adopts a threaded form, which is easy to operate and can achieve precise control of the stroke of the cylinder head starting valve; the adjusting mechanism 4 can move flexibly back and forth and left and right, so that the ejector rod 53 and the valve core of the starting valve can always be aligned.

[0073] Secondly, a nuclear power plant maintenance device is provided, including an online valve measuring device 200 and the aforementioned valve measuring device 100. The online valve measuring device 200 is used for online measurement of the valve body 7, and the valve measuring device 100 is used for measurement of the valve body 7 after offline disassembly.

[0074] By adopting the above technical solution, based on the advantages of the valve measuring device 100 of the above embodiment, the valve online measuring device 200 of this embodiment also has the function of online detection of the start valve.

[0075] In one embodiment, the valve online measuring device 200 includes a first rod 201 and a second rod 202 connected to the first rod 201. The second rod 202 includes a first rod portion 2021 connected to the first rod 201, a clearance portion 2022 connected to the first rod portion 2021, and a second rod portion 2023 connected to the clearance portion 2022. The length direction of the first rod portion 2021 is perpendicular to the length direction of the first rod 201, the clearance portion 2022 forms a clearance space, and the length direction of the second rod portion 2023 is perpendicular to the length direction of the first rod 201.

[0076] Here, it can be understood that the shape and size of the avoidance part 2022 match the internal structure and installation position of the start valve; the first rod 201 is printed with a scale with an accuracy of 1mm, which can clearly observe the stroke change and achieve the purpose of accurate measurement.

[0077] By adopting the above technical solution, tools with appropriate diameter and shape are designed and manufactured according to the internal structure and installation position of the starting valve, effectively eliminating the risk of equipment damage. Using this tool optimizes the maintenance process, making operation more convenient and ensuring better maintenance quality. Furthermore, by designing an online valve measuring device 200 with a suitable diameter based on the inlet size of the starting valve, the risk of tool jamming and equipment damage during measurement can be eliminated. In addition, operators can perform online measurements by holding the first rod 201 on the top of the online valve measuring device 200, eliminating the risk of operator hand pinching during measurement as there is no need to contact pipelines or other equipment near the starting valve.

[0078] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve measuring device, characterized in that, include: A first plate, a second plate parallel to and spaced apart from the first plate, a third plate connecting the first plate and the second plate, an adjustment mechanism on the first plate, an ejection mechanism on the adjustment mechanism, and a measuring mechanism on the second plate; wherein the second plate has a fixing hole for fixing the valve body, the adjustment mechanism can adjust the position of the ejection mechanism to align with the fixing hole, the ejection mechanism can eject the valve core of the valve body, and the measuring mechanism measures the ejection length of the valve core after the ejection mechanism ejects the valve core.

2. The valve measuring device as described in claim 1, characterized in that, The adjustment mechanism includes a first adjustment unit disposed on the first plate and a second adjustment unit disposed on the first adjustment unit. The first adjustment unit can adjust the position of the second adjustment unit in a first direction parallel to the first plate. The second adjustment unit is provided with the ejection mechanism, and the second adjustment unit can adjust the position of the ejection mechanism in a second direction parallel to the first plate, wherein the second direction is perpendicular to the first direction.

3. The valve measuring device as described in claim 2, characterized in that, The first adjustment unit includes a first guide rail disposed on the first plate and parallel to the first direction, a first slider slidably disposed on the first guide rail, and a first driving member for driving the first slider to slide on the first guide rail; the second adjustment unit includes a second guide rail disposed on the first slider and parallel to the second direction, a second slider slidably disposed on the second guide rail, and a second driving member for driving the second slider to slide on the second guide rail; the ejection mechanism is disposed on the second slider.

4. The valve measuring device as described in claim 3, characterized in that, The first driving member and the second driving member are lead screw members, each lead screw member including a lead rod and a nut threadedly connected to the lead rod. The lead rod of the first driving member is parallel to the first guide rail, and the nut of the first driving member is connected to the first sliding member. The lead rod of the second driving member is parallel to the second guide rail, and the nut of the second driving member is connected to the second sliding member.

5. The valve measuring device according to any one of claims 1 to 4, characterized in that, The ejection mechanism includes an ejection seat, a threaded component disposed in the ejection seat, and a push rod disposed on the threaded component. The ejection seat is disposed on the adjustment mechanism. The threaded component is threadedly connected to the ejection seat and is provided with a handle. The handle can drive the threaded component to rotate about an axis relative to the ejection seat. When the threaded component rotates about the axis, it extends or retracts relative to the ejection seat, thereby driving the push rod to extend or retract relative to the fixing hole.

6. The valve measuring device according to any one of claims 1 to 4, characterized in that, The measuring mechanism includes a dial indicator mounted on the second plate and a measuring rod mounted on the dial indicator. The measuring rod is telescopic relative to the dial indicator and is positioned directly opposite the fixing hole.

7. The valve measuring device as described in claim 6, characterized in that, The measuring mechanism further includes a clamping structure connected to the third plate. The clamping structure is located on the side of the second plate opposite to the first plate and is used to clamp the dial indicator.

8. The valve measuring device as described in claim 7, characterized in that, The clamping structure is threadedly connected to the dial indicator.

9. A nuclear power plant maintenance equipment, characterized in that, The device includes an online valve measuring device and the valve measuring device according to any one of claims 1 to 8, wherein the online valve measuring device is used for online measurement of the valve body, and the valve measuring device is used for measurement of the valve body after offline disassembly.

10. The nuclear power plant maintenance equipment as described in claim 9, characterized in that, The valve online measuring device includes a first rod and a second rod connected to the first rod. The second rod includes a first rod portion connected to the first rod, a clearance portion connected to the first rod portion, and a second rod portion connected to the clearance portion. The length direction of the first rod portion is perpendicular to the length direction of the first rod, the clearance portion forms a clearance space, and the length direction of the second rod portion is perpendicular to the length direction of the first rod.

Images