Y-shaped stop valve measuring tool

Abstract

The utility model relates to the technical field of valve measurement, and discloses a Y-shaped stop valve measuring tool which comprises a main ruler. The first measuring assembly is suitable for measuring the length of the valve structure; the second measuring assembly and the bevel protractor are suitable for measuring the inclination angle of the valve rod; the measuring direction of the third measuring assembly is parallel to the radial direction of the middle flange of the valve, and the measuring tool is suitable for measuring the outer diameter of the middle flange of the valve. Different measuring tools do not need to be replaced frequently, the measuring efficiency is improved, and operation errors in the measuring process are reduced; and comprehensive measurement data can be obtained at a time, complete data support is provided for design optimization, production assembly, installation debugging and maintenance overhaul of the valve, and decision errors caused by incomplete measurement data are avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve measurement technology, specifically to a Y-type gate valve measuring tool. Background Technology

[0002] As a typical representative of high-temperature, high-pressure direct-flow valves, the Y-type gate valve features a valve body formed by casting or forging, with the valve seat embedded in the throat. Its conical sealing surface design effectively resists media erosion, reduces impurity accumulation, lowers the risk of sealing surface wear, and improves the valve's sealing performance and service life. Thanks to its unique Y-type structural design, the Y-type gate valve demonstrates advantages over traditional gate valves in industrial pipeline systems, significantly reducing flow resistance and enhancing media flow capacity. Therefore, it is widely used in petrochemical, power energy, and other fields.

[0003] Due to the complex structure of the Y-type gate valve, its special configuration such as the Y-type channel and conical sealing surface requires frequent replacement of various measuring tools such as calipers and angle gauges during the measurement process. This not only makes the operation cumbersome and inefficient, but also makes it easy for human error to be introduced during the measurement process due to the frequent switching of various tools. Utility Model Content

[0004] In view of this, the present invention provides a Y-type gate valve measuring tool to solve the problem in the prior art that Y-type gate valves require frequent replacement of different measuring tools to measure their various dimensions.

[0005] This utility model provides a Y-type shut-off valve measuring tool, including:

[0006] Main scale;

[0007] A first measuring component is slidably disposed on the main scale, and the first measuring component is adapted to measure the length of the valve structure;

[0008] The second measuring component includes an angle gauge rotatably mounted on the main scale, the angle gauge being adapted to measure the tilt angle of the valve stem;

[0009] The third measuring component is slidably mounted on the angle gauge. The measuring direction of the third measuring component is parallel to the radial direction of the valve's middle flange, and it is suitable for measuring the outer diameter of the valve's middle flange.

[0010] Optionally, the first measurement component includes:

[0011] Two first positioning elements are slidably disposed on the main scale. The opposing end faces of the two first positioning elements form two first measuring reference surfaces for clamping the valve end face. When the main scale is disposed outside the valve along the liquid flow direction, the two first measuring reference surfaces are adapted to abut against the two end faces of the valve respectively.

[0012] Optionally, the second measuring component further includes:

[0013] A rotating assembly is provided on the main scale (1) and the angle scale (2). The angle scale is adapted to rotate in a plane perpendicular to the main scale via the rotating assembly. The angle scale is rotated so that the length direction of the angle scale is parallel to the axial direction of the valve stem, so as to measure the tilt angle of the valve stem.

[0014] Optionally, the rotating assembly includes a first fixing member and a first locking member. The angle ruler is rotatably mounted on the main ruler via the first fixing member and the first locking member. The first fixing member has a first state in which the rotation angle of the angle ruler is fixed when the first locking member is pressed, and a second state in which the angle ruler is allowed to rotate when the first locking member is released.

[0015] Optionally, a first groove is provided along the length direction of the main scale, and the rotating component is slidably disposed in the first groove to enable the angle scale to slide along the length direction of the main scale.

[0016] Optionally, the second measuring component further includes an angle measuring element, which is marked with angle scales and is slidably disposed in the first groove along with the angle ruler.

[0017] Optionally, the third measurement component includes:

[0018] A sliding ruler, wherein the length direction of the sliding ruler is perpendicular to the length direction of the angle ruler, and the sliding ruler is slidably disposed on the angle ruler;

[0019] Two second positioning members are slidably disposed on the slide along the length direction of the slide. The opposite end faces of the two second positioning members form two second measuring reference surfaces for clamping the outer diameter of the middle flange. When the length of the slide is parallel to the radial direction of the middle flange, the two second measuring reference surfaces are adapted to abut against the two sides of the middle flange respectively.

[0020] Optionally, a second slide groove is provided along the length direction of the slide ruler, and a sliding locking assembly is also included. The sliding locking assembly includes a second fixing member and a second locking member. The second positioning member is slidably disposed on the slide ruler through the second fixing member and the second locking member. The second fixing member has a first state of fixing the second positioning member when the second locking member is pressed, and a second state of allowing the second positioning member to slide when the second locking member is released.

[0021] Optionally, the main scale has a first graduation along the length direction.

[0022] Optionally, the angle ruler has a second scale along its length.

[0023] Beneficial effects

[0024] This utility model provides a Y-type gate valve measuring tool, comprising a main scale; a first measuring component slidably mounted on the main scale, adapted for measuring the length of the valve structure; a second measuring component including an angle gauge rotatably mounted on the main scale, adapted for measuring the tilt angle of the valve stem; and a third measuring component slidably mounted on the angle gauge, the measuring direction of which is parallel to the radial direction of the valve's middle flange, adapted for measuring the outer diameter of the valve's middle flange. This Y-type gate valve measuring tool can simultaneously measure multiple dimensions such as the valve structure length, valve stem tilt angle, and middle flange outer diameter, eliminating the need for frequent changes of different measuring tools, improving measurement efficiency, and reducing operational errors during the measurement process. Furthermore, it acquires comprehensive measurement data at once, providing complete data support for valve design optimization, production assembly, installation, commissioning, and maintenance, avoiding decision-making errors caused by incomplete measurement data. Simultaneously, it reduces the use of multiple single-function measuring tools, avoiding the confusion caused by numerous tools, bringing an efficient, accurate, and convenient measurement experience to industrial production, effectively ensuring the safe and stable operation of industrial production.

[0025] The Y-type gate valve measuring tool provided by this utility model, with its main scale and sliding first measuring component, solves the problem of traditional measuring tools being unable to accurately locate and measure key dimensions in the irregular geometry of Y-type gate valves, achieving precise measurement along the length of the valve structure and ensuring accurate and reliable data. The second measuring component, with an angle gauge rotatably mounted on the main scale, overcomes the measurement limitations of traditional angle gauges in complex working environments, enabling convenient and efficient measurement of the valve stem tilt angle and improving the efficiency of production quality control. The third measuring component, slidably mounted on the angle gauge, can measure the outer diameter of the flange in the valve, compensating for the shortcomings of conventional tools, expanding the measurement range for key parts, avoiding problems such as installation misalignment and inaccurate flow control caused by measurement deviations, and ensuring the safe and stable operation of industrial production. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a Y-type shut-off valve measuring tool according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the operation of the Y-type shut-off valve measuring tool according to an embodiment of the present invention;

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Main scale; 11. First positioning component; 12. First slide groove;

[0031] 2. Angle ruler; 21. First fixing component;

[0032] 3. Slide ruler; 31. Second positioning component; 32. Second slide groove; 33. Second fixing component; 34. Second locking component;

[0033] 4. Y-type shut-off valve; Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] The following is combined Figures 1 to 2 Embodiments of this utility model are described below.

[0036] According to an embodiment of the present invention, a Y-type shut-off valve measuring tool is provided, comprising:

[0037] Main scale 1;

[0038] The first measuring component is slidably mounted on the main scale 1 and is adapted to measure the length of the valve structure.

[0039] The second measuring component includes an angle gauge 2 rotatably mounted on the main scale 1, the angle gauge 2 being adapted to measure the tilt angle of the valve stem;

[0040] The third measuring component is slidably mounted on the angle gauge 2. The measuring direction of the third measuring component is parallel to the radial direction of the valve's middle flange, and is suitable for measuring the outer diameter of the valve's middle flange.

[0041] It should be noted that the valve structure length refers to the straight-line distance from the inlet end to the outlet end of the Y-type gate valve 4; the stem inclination angle refers to the angle formed by the stem axis relative to the vertical direction of the valve body in the Y-type gate valve 4; and the outer diameter of the middle flange refers to the diameter of the circumference formed by the outer edge of the flange in the middle of the valve body of the Y-type gate valve 4. These length and angle parameters directly affect the compatibility, sealing, and fluid flow performance of the valve with the piping system, and are important measurement indicators in valve manufacturing, installation, commissioning, maintenance, and repair.

[0042] The Y-type gate valve measuring tool provided in this embodiment can simultaneously measure multiple dimensions such as valve structural length, valve stem tilt angle, and outer diameter of the middle flange, eliminating the need for frequent changes of different measuring tools, thus improving measurement efficiency and reducing operational errors during the measurement process. Furthermore, it acquires comprehensive measurement data in one go, providing complete data support for valve design optimization, production assembly, installation, commissioning, and maintenance, avoiding decision-making errors caused by incomplete measurement data. At the same time, it reduces the use of multiple single-function measuring tools, avoiding the confusion caused by numerous tools, bringing an efficient, accurate, and convenient measurement experience to industrial production, and effectively ensuring the safe and stable operation of industrial production.

[0043] The Y-type gate valve measuring tool provided in this embodiment, with its main scale 1 and sliding first measuring component, solves the problem of traditional measuring tools being unable to accurately locate and measure key dimensions in the irregular geometry of the Y-type gate valve 4, achieving accurate measurement along the length of the valve structure and ensuring accurate and reliable data. The second measuring component, with its rotatable angle gauge 2 mounted on the main scale 1, overcomes the measurement limitations of traditional angle gauges in complex working environments, enabling convenient and efficient measurement of the valve stem tilt angle and improving the efficiency of production quality control. The third measuring component, slidably mounted on the angle gauge 2, can measure the outer diameter of the flange in the valve, compensating for the shortcomings of conventional tools, expanding the measurement range for key parts, avoiding problems such as installation misalignment and inaccurate flow control caused by measurement deviations, and ensuring the safe and stable operation of industrial production.

[0044] Furthermore, the first measuring component includes:

[0045] Two first positioning elements 11 are slidably disposed on the main scale 1. The opposing end faces of the two first positioning elements 11 form two first measuring reference surfaces for clamping the valve end face. When the main scale 1 is disposed on the outside of the valve along the liquid flow direction, the two first measuring reference surfaces are adapted to abut against the two end faces of the valve respectively.

[0046] It should be noted that, in this embodiment, by opening a through hole on the first positioning member 11 that matches the size of the main scale 1, the first positioning member 11 is directly fitted onto the main scale 1 and positioned near the end, thereby enabling the first positioning member 11 to slide along the length direction of the main scale 1. The cooperation between the through hole and the main scale 1 ensures smooth and stable sliding of the first positioning member 11, facilitating the operator to quickly adjust the distance between the two first positioning members 11, accurately fitting the two end faces of the valve, improving the efficiency and convenience of valve structural length measurement, and ensuring that the first positioning member 11 is not prone to displacement or jamming during the measurement process, providing reliable support for obtaining accurate measurement data. Of course, to prevent the first positioning member 11 from detaching from the main scale 1, limiters can be provided at both ends of the main scale 1 along its length direction.

[0047] The sliding arrangement of the two first positioning elements 11 on the main scale 1 easily overcomes the bottleneck of traditional measuring instruments' difficulty in accurately positioning the irregular shape of the Y-type gate valve 4. During measurement, the main scale 1 is placed on the outside of the valve along the liquid flow direction, and the two first positioning elements 11 can be flexibly adjusted to ensure that the first measurement reference surface formed by the opposing end faces can closely fit the two end faces of the valve, thus establishing a stable and accurate measurement reference. Compared with the measurement errors caused by the difficulty in positioning the measuring instrument in traditional measurement methods, the clamping measurement with double reference surfaces effectively eliminates shaking and offset during the measurement process, ensuring the accuracy and reliability of the measurement data and improving the efficiency of valve structure length measurement.

[0048] Furthermore, the second measurement component also includes:

[0049] A rotating assembly is provided on the main scale 1 and the angle scale 2. The angle scale 2 is adapted to rotate in a plane perpendicular to the main scale 1 by the rotating assembly. The angle scale 2 is rotated so that its length direction is parallel to the axial direction of the valve stem, so as to measure the tilt angle of the valve stem.

[0050] In simple terms, the main scale 1 serves as the basic measurement reference, providing a stable reference for the entire measurement process. Meanwhile, the rotational characteristics in the vertical plane allow the angle scale 2 to flexibly adjust its posture according to the actual tilt direction and angle of the valve stem when measuring the tilt angle of the valve stem.

[0051] In the second measuring component, the angle ruler 2 can rotate flexibly in the plane perpendicular to the main ruler 1 through the rotating component. It can be quickly adjusted to be parallel to the valve stem axis and accurately fit the tilt shape of the valve stem. Compared with the traditional angle ruler 2, it simplifies the measurement operation steps, shortens the measurement time, reduces the measurement error, and achieves efficient and accurate measurement of the valve stem tilt angle.

[0052] Furthermore, the rotating assembly includes a first fixing member 21 and a first locking member. The angle ruler 2 is rotatably mounted on the main ruler 1 through the first fixing member 21 and the first locking member. The first fixing member 21 has a first state in which the rotation angle of the angle ruler 2 is fixed when the first locking member is pressed, and a second state in which the angle ruler 2 is allowed to rotate when the first locking member is released.

[0053] In a straightforward manner, the cooperation between the first fixing member 21 and the first locking member enables flexible operation and precise fixation of the angle gauge 2 during the measurement process. When measuring the tilt angle of the valve stem, the first locking member is released in the second state, allowing the angle gauge 2 to rotate freely in a plane perpendicular to the main scale 1, quickly adjusting to a position parallel to the valve stem axis. This adapts to the complex spatial structure of the Y-type shut-off valve 4 and improves measurement efficiency. Once the angle gauge 2 is in place, the system switches to the first state, where the first fixing member 21 presses against the first locking member, firmly fixing the rotation angle of the angle gauge 2. This prevents data deviations caused by shaking during the measurement process, ensuring the accuracy and reliability of the measurement results.

[0054] In one alternative embodiment, a spring-loaded snap-on structure can be used to replace the first fixing member 21 and the first locking member. The spring force is used to achieve the elastic positioning of the angle ruler 2, and pressing the snap-on can unlock and rotate it. Alternatively, it can be designed as a magnetic structure, which uses the magnetic principle to automatically attach and fix the angle ruler 2 at the measurement position. When adjustment is needed, an external force is applied to overcome the magnetic force to rotate it.

[0055] Furthermore, a first slide groove 12 is provided along the length direction of the main scale 1, and the rotating component is slidably disposed in the first slide groove 12 so as to realize that the angle scale 2 slides along the length direction of the main scale 1.

[0056] In a straightforward manner, when measuring the tilt angle of the valve stem of a Y-type gate valve 4 at different specifications and positions, the rotating assembly can slide flexibly within the first slide groove 12, driving the angle gauge 2 to move along the length of the main gauge 1. This allows for quick adaptation to different measurement points on the valve, eliminating the need for frequent changes in measuring tools or adjustments to the measurement position, effectively improving measurement efficiency. Simultaneously, the sliding design enables the angle gauge 2 to more precisely contact the valve stem during measurement, ensuring parallelism along the axial direction and avoiding measurement errors caused by distance deviations. This further guarantees the accuracy and reliability of the measurement data, enhancing the versatility and applicability of the measuring tool to diverse valve products.

[0057] Furthermore, the second measuring component also includes an angle measuring element, which is marked with angle scales and is slidably disposed in the first slide groove 12 along with the angle ruler 2.

[0058] Intuitively, the angle measuring component added to the measuring assembly is marked with angle graduations and slides in the first slide groove 12 along with the angle ruler 2, optimizing the measurement experience of the valve stem tilt angle. During measurement, the angle measuring component flexibly adjusts its position to match the tilt direction of the valve stem, and its clear angle graduations can intuitively show the angle between the angle ruler 2 and the main ruler 1, i.e., the valve stem tilt angle. Data can be quickly obtained without complicated conversions, improving measurement efficiency.

[0059] Furthermore, the third measurement component includes:

[0060] Sliding ruler 3, the length direction of sliding ruler 3 is perpendicular to the length direction of angle ruler 2, and sliding ruler 3 is slidably set on angle ruler 2;

[0061] Two second positioning elements 31 are slidably disposed on the slide ruler 3 along the length direction of the slide ruler 3. The opposite end faces of the two second positioning elements 31 form two second measuring reference surfaces for clamping the outer diameter of the middle flange. When the length direction of the slide ruler 3 is parallel to the radial direction of the middle flange, the two second measuring reference surfaces are adapted to abut against the two sides of the middle flange respectively.

[0062] In a straightforward manner, the slide ruler 3 is slidably connected to the angle ruler 2 via a sliding member. This allows the slide ruler 3 to move flexibly along the length of the angle ruler 2. The sliding member can be a slider with a through hole; the slider is fitted onto the slide rail and then connected to the slide ruler 3, thus enabling the slide ruler 3 to move flexibly along the length of the angle ruler 2. During measurement, the operator can easily push the slide ruler 3 and quickly adjust its position so that the length of the slide ruler 3 is parallel to the radial direction of the middle flange. With the assistance of the two second positioning members 31 sliding along the slide ruler 3, it can be quickly positioned and fitted to both sides of the middle flange to complete the outer diameter measurement.

[0063] The layout of the slide gauge 3 perpendicular to the angle gauge 2 allows it to be flexibly adjusted to a measurement position parallel to the radial direction of the middle flange, fitting the complex spatial structure of the valve. The sliding function of the slide gauge 3 on the angle gauge 2 allows for quick positioning of the measurement point based on the valve installation conditions and the specific location of the middle flange. The two second positioning elements 31 slide along the slide gauge 3 to form a second measurement reference surface that precisely matches the outer diameter of the middle flange. During measurement, the reference surface is adjusted by sliding to ensure it is tightly against both sides of the middle flange, achieving stable and accurate clamping measurement. This eliminates errors caused by measurement reference deviations, improves the accuracy and efficiency of the middle flange outer diameter measurement, and provides reliable data support for valve installation, seal fitting, and system connection, effectively avoiding problems such as leakage and loose connections caused by dimensional deviations.

[0064] Furthermore, a second slide groove 32 is provided along the length direction of the slide ruler 3, and a sliding locking assembly is also included. The sliding locking assembly includes a second fixing member 33 and a second locking member 34. The second positioning member 31 is slidably disposed on the slide ruler 3 through the second fixing member 33 and the second locking member 34. The second fixing member 33 has a first state of fixing the second positioning member 31 when pressing the second locking member 34, and a second state of releasing the second locking member 34 to allow the second positioning member 31 to slide.

[0065] In an easy-to-understand manner, the second slide groove 32, which is set along the length of the slide ruler 3, cooperates with the sliding locking component. During the measurement process, in the second state, the second locking member 34 is released, and the two second positioning members 31 can slide freely on the slide ruler 3 along the second slide groove 32. This allows for quick adjustment of the spacing, precise adaptation to the outer diameter of flanges of different sizes, and improved measurement efficiency. When the second positioning member 31 is adjusted to the appropriate position, the system switches to the first state, and the second fixing member 33 presses against the second locking member 34, which can firmly fix the second positioning member 31. This ensures that the measurement reference surface is stably abutting against both sides of the flange during measurement, avoiding measurement data deviation due to shaking or displacement, ensuring the accuracy and reliability of the measurement results, and effectively meeting the high-precision measurement needs of the outer diameter of the flange in the Y-type gate valve 4 in industrial production.

[0066] In one optional embodiment, a resilient latch structure can be used to replace the sliding locking component. Corresponding slots are provided on the slide ruler 3 and the second positioning member 31. By pressing the latch, the second positioning member 31 can be popped out or retracted into the slot, thereby locking and unlocking it. In another optional embodiment, a threaded knob structure can be used to replace the sliding locking component. A threaded hole is provided on the second positioning member 31, which cooperates with a screw passing through the slide ruler 3. By rotating the screw, the friction between the second positioning member 31 and the slide ruler 3 can be controlled, thereby achieving sliding and fixing.

[0067] Furthermore, the main scale 1 has a first graduation along its length.

[0068] In simple terms, adding a scale not only makes the measurement process more intuitive and efficient, avoiding errors caused by estimation or indirect measurement in traditional measurement methods, but also allows for the rapid acquisition of key valve dimension data during installation, commissioning, maintenance, and repair. At the same time, the coordination between the first scale and the main scale 1 ensures that measurement personnel can accurately read the values ​​in different operating environments, improving measurement efficiency and data reliability.

[0069] It should be noted that, during use, the main scale 1 is placed outside the valve along the direction of liquid flow. By sliding the two first positioning parts 11 of the first measuring component, the opposing first measuring reference surfaces are made to tightly abut against the two end faces of the valve. At this time, the difference between the first scales on the main scale 1 corresponding to the two first positioning parts 11 is the structural length of the valve.

[0070] In an optional embodiment, the position of one of the first positioning members 11 can be used as the 0 mark. This simplifies the measurement and reading process of the structural length of the Y-type gate valve 4. During measurement, the first positioning member 11, which serves as the 0 mark, is first tightly fitted against one end face of the valve to establish the measurement starting point. Then, the other first positioning member 11 is slid until it abuts against the other end face of the valve. The reading of the other first positioning member 11 on the first scale of the main scale 1 at this point is the structural length of the valve. This setting eliminates the need for scale difference calculations, allowing the measuring personnel to directly read the data, reducing the probability of reading errors and further improving measurement efficiency.

[0071] Furthermore, the angle ruler 2 has a second scale along its length.

[0072] In a straightforward manner, the second scale set along the length of the angle gauge 2 facilitates precise positioning and reading of auxiliary length data when measuring the valve stem tilt angle to support dimensional conversion and component installation positioning; it also helps to quickly determine the position of the slide gauge 3 on the angle gauge 2 when measuring the outer diameter of the flange, thereby improving measurement efficiency.

[0073] It should be noted that, during use, first, the main scale 1 is placed outside the valve along the direction of liquid flow. The two first positioning parts 11 of the first measuring component are slid to make their first measuring reference surfaces tightly abut against the two end faces of the valve. The length of the valve structure is read through the first scale on the main scale 1. Next, the angle scale 2 is slid and rotated in the first slide groove 12 using the rotating component to make the axis of the angle scale 2 parallel to the valve stem axis. The valve stem tilt angle is read through the second scale on the angle scale 2 and the angle scale of the angle measuring component. Finally, the slide scale 3 is placed radially perpendicular to the middle flange. The two second positioning parts 31 are slid along the slide scale 3 to make the second measuring reference surfaces clamp the two sides of the middle flange, thus completing the measurement of the outer diameter of the middle flange. During the measurement process, the position of the second positioning parts 31 can be fixed by the sliding locking component to ensure that the measurement data is accurate and reliable.

[0074] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A Y-type shut-off valve measuring tool, characterized in that, include: Main scale (1); A first measuring component is slidably disposed on the main scale (1) and is adapted to measure the length of the valve structure. The second measuring component includes an angle gauge (2) rotatably mounted on the main scale (1), the angle gauge (2) being adapted to measure the tilt angle of the valve stem; The third measuring component is slidably mounted on the angle ruler (2). The measuring direction of the third measuring component is parallel to the radial direction of the valve's middle flange, and is suitable for measuring the outer diameter of the valve's middle flange.

2. The Y-type shut-off valve measuring tool according to claim 1, characterized in that, The first measurement component includes: Two first positioning elements (11) are slidably disposed on the main scale (1). The opposing end faces of the two first positioning elements (11) form two first measuring reference surfaces for clamping the valve end face. When the main scale (1) is disposed on the outside of the valve along the liquid flow direction, the two first measuring reference surfaces are adapted to abut against the two end faces of the valve respectively.

3. The Y-type shut-off valve measuring tool according to claim 1, characterized in that, The second measurement component also includes: A rotating assembly is provided on the main scale (1) and the angle scale (2). The angle scale (2) is adapted to rotate in a plane perpendicular to the main scale (1) by the rotating assembly. The angle scale (2) is rotated so that the length direction of the angle scale (2) is parallel to the axial direction of the valve stem, so as to measure the tilt angle of the valve stem.

4. The Y-type shut-off valve measuring tool according to claim 3, characterized in that, The rotating assembly includes a first fixing member (21) and a first locking member. The angle ruler (2) is rotatably mounted on the main ruler (1) via the first fixing member (21) and the first locking member. The first fixing member (21) has a first state in which the rotation angle of the angle ruler (2) is fixed when the first locking member is pressed, and a second state in which the angle ruler (2) is allowed to rotate when the first locking member is released.

5. The Y-type shut-off valve measuring tool according to claim 4, characterized in that, A first slide groove (12) is also provided along the length direction of the main scale (1), and the rotating component is slidably disposed in the first slide groove (12) so as to realize that the angle scale (2) slides along the length direction of the main scale (1).

6. The Y-type shut-off valve measuring tool according to claim 5, characterized in that, The second measuring component also includes an angle measuring element, which is marked with an angle scale and is slidably disposed in the first groove (12) along with the angle ruler (2).

7. The Y-type shut-off valve measuring tool according to claim 1, characterized in that, The third measurement component includes: A sliding ruler (3) is perpendicular to the length direction of the angle ruler (2), and the sliding ruler (3) is slidably disposed on the angle ruler (2); Two second positioning elements (31) are slidably disposed on the slide ruler (3) along the length direction of the slide ruler (3). The opposite end faces of the two second positioning elements (31) form two second measuring reference surfaces for clamping the outer diameter of the middle flange. When the length direction of the slide ruler (3) is parallel to the radial direction of the middle flange, the two second measuring reference surfaces are adapted to abut against the two sides of the middle flange respectively.

8. The Y-type shut-off valve measuring tool according to claim 7, characterized in that, A second slide groove (32) is provided along the length direction of the slide ruler (3), and a sliding locking assembly is also included. The sliding locking assembly includes a second fixing member (33) and a second locking member (34). The second positioning member (31) is slidably disposed on the slide ruler (3) through the second fixing member (33) and the second locking member (34). The second fixing member (33) has a first state of fixing the second positioning member (31) when pressing the second locking member (34), and a second state of allowing the second positioning member (31) to slide when the second locking member (34) is released.

9. The Y-type shut-off valve measuring tool according to any one of claims 1-8, characterized in that, The main scale (1) has a first graduation along the length direction.

10. The Y-type shut-off valve measuring tool according to any one of claims 1-8, characterized in that, The angle ruler (2) has a second scale along its length.

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