Tool for measuring wall thickness of valve body

Abstract

The utility model provides a tool for measuring the wall thickness of a valve body. A first measuring rod and a second measuring rod are hinged in a crossed manner; at least one end of the first measuring rod and at least one end of the second measuring rod are respectively provided with a measuring end. The dial is fixed on the first measuring rod, and a zero mark pointing to the zero scale of the dial is arranged on one side, deviating to the measuring end, of the first measuring rod; a pointer mark pointing to the scales on the dial is arranged on one side, deviating to the measuring end of the second measuring rod, of the second measuring rod; when one measuring end of the first measuring rod and one measuring end of the second measuring rod abut against the outer circumferential wall and the inner circumferential wall of a determined position point of the corresponding valve body respectively, the scales, pointing to the dial, of the pointer marks correspondingly deviating to the two measuring ends are used for representing the wall thickness, corresponding to the determined position point, of the valve body. And the thickness of the valve body can be visually obtained from the dial, so that the thickness of the cast valve body can be rapidly detected. The measuring tool is simple in structure, easy to operate and low in cost for measuring the wall thickness of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body wall thickness measurement, in particular to a valve body wall thickness measurement tool. Background Art

[0002] Valves are important basic components of the national economy. They are a type of equipment used to regulate, control and guide the flow of liquids, gases, fluidized solids and other media. They are used to change the cross-section of the passage and the flow direction of the medium. They have functions such as diversion, cut-off, throttling, non-return, diversion or overflow pressure relief. Valves are widely used in oil refining, long-distance pipelines, ships, petrochemicals, polysilicon, electric power and other industries, and play an important role in pipelines and production lines in different industries.

[0003] The valve body is a key component because it is the main pressure-bearing part. The valve body of the valve is usually made of castings or forgings. The valve body of the high-pressure ball valve is usually made of forgings, while the valve body of the medium and low-pressure ball valve is usually made of castings. Since the valve is a pressure pipeline component and a pressure-bearing part, the thickness of the cast valve body not only determines the strength of the valve body, but also is related to the corrosion resistance and abrasion resistance of the valve body. In order to reduce fluid resistance, the cast valve body usually adopts a smooth streamlined design. Thickness measurement is usually a difficult point in daily measurement. If special equipment or laser measurement is used, special equipment is mostly required, and the investment cost is also relatively large. Therefore, how to use the simplest method to achieve the measurement requirements has become an urgent measurement problem to be solved. Utility Model Content

[0004] In order to solve the problems in the background technology, an embodiment of the utility model provides a tool for measuring the wall thickness of a valve body.

[0005] The embodiment of the utility model adopts the following technical solution: a valve body wall thickness measuring tool comprises a first measuring rod, a second measuring rod and a dial;

[0006] The first measuring rod and the second measuring rod are arranged crosswise, and the middle parts of the two are hinged; at least one end of the first measuring rod and at least one end of the second measuring rod are respectively formed with a measuring end;

[0007] The scale plate is fixed to the middle of the first measuring rod, a zero mark is provided on one side of the first measuring rod towards its measuring end, and the zero mark points to the zero mark of the scale plate; a pointer mark is provided on one side of the second measuring rod towards its measuring end, and the pointer mark points to the mark on the scale plate;

[0008] When one measuring end of the first measuring rod and one measuring end of the second measuring rod respectively contact the outer wall and inner wall corresponding to the determined position of the valve body, the pointer marking corresponding to the two measuring ends points to the scale on the dial to indicate the wall thickness of the valve body corresponding to the determined position.

[0009] In some embodiments, both ends of the first measuring rod and both ends of the second measuring rod are formed with measuring ends;

[0010] A first fixing hole penetrating the first measuring rod is provided in the middle of the first measuring rod, and the center of the first fixing hole is located at the midpoint of a line connecting two measuring ends of the first measuring rod;

[0011] A second fixing hole penetrating the second measuring rod is provided in the middle of the second measuring rod, and the center of the second fixing hole is located at the midpoint of the line connecting the two measuring ends of the second measuring rod;

[0012] A through hole penetrating the scale plate is provided at the center of the scale plate, and the through hole is coaxially arranged with the first fixing hole and the second fixing hole;

[0013] The valve body wall thickness measuring tool further comprises a fixing pin, and the fixing pin passes through the first fixing hole, the second fixing hole and the through hole to realize the hinge connection between the first measuring rod and the second measuring rod.

[0014] In some embodiments, the two ends of the first measuring rod are respectively formed with a first measuring end and a second measuring end; the two ends of the second measuring rod are respectively formed with a third measuring end and a fourth measuring end;

[0015] The first measuring rod comprises a first curved portion extending from the first fixing hole to the first measuring end and a second curved portion extending from the first fixing hole to the second measuring end;

[0016] The second measuring rod comprises a third curved portion extending from the second fixing hole to the third measuring end and a fourth curved portion extending from the second fixing hole to the fourth measuring end;

[0017] The first curved portion and the third curved portion or the fourth curved portion enclose a first avoidance area convex outwardly, and the second curved portion and the fourth curved portion or the third curved portion enclose a second avoidance area convex outwardly.

[0018] In some embodiments, the first measuring rod and the second measuring rod have the same structure and are symmetrically arranged;

[0019] The first curved portion at least includes a first semicircular arc portion, and the first semicircular arc portion protrudes in a direction away from the third curved portion or the fourth curved portion;

[0020] The third curved portion at least includes a second semicircular arc portion, and the second semicircular arc portion protrudes in a direction away from the first curved portion or the second curved portion.

[0021] In some embodiments, the first curved portion further includes a first straight portion, one end of the first straight portion is located at the first fixing hole, and the other end of the first straight portion extends to one end of the first semicircular arc portion;

[0022] The second curved portion further includes a first arc portion and a second straight portion, the first arc portion protrudes in a direction away from the fourth curved portion or the third curved portion; the second straight portion is located at the first fixing hole, and the other end of the second straight portion extends to one end of the first arc portion;

[0023] The third curved portion further includes a third straight portion, one end of the third straight portion is located at the second fixing hole, and the other end of the third straight portion extends to one end of the second semicircular arc portion;

[0024] The fourth curved portion further includes a second arc portion and a fourth straight portion, wherein the second arc portion protrudes in a direction away from the first curved portion or the second curved portion; the fourth straight portion is located at the second fixing hole, and the other end of the fourth straight portion extends to one end of the second arc portion;

[0025] The first measuring rod is provided with two zero position marks and two pointer marks, the two zero position marks are respectively provided on the first straight portion and the second straight portion, and the two zero position marks are located on the same straight line, and the two pointer marks are respectively provided on the third straight portion and the fourth straight portion, and the two pointer marks are located on the same straight line.

[0026] In some embodiments, when the first curved portion and the third curved portion form a first avoidance area convex outward, the first measuring end and the third measuring end extend in a direction approaching each other, and the second measuring end and the fourth measuring end extend in a direction approaching each other, and each measuring end forms a tip at the end of its extension, and the tip is provided with a round chamfer.

[0027] In some embodiments, when the end of one measuring end of the first measuring rod contacts the end of one measuring end of the second measuring rod, the pointer mark points to the zero scale on the dial.

[0028] In some embodiments, the scale plate is welded and fixed on the first measuring rod.

[0029] In some embodiments, the first measuring rod and the second measuring rod are made of metal plates.

[0030] The scales on the scale plate are evenly arranged, and the scales are used to indicate the angle between the first measuring rod and the second measuring rod, and the angle has a one-to-one correspondence with the wall thickness of a corresponding determined position of the valve body.

[0031] The beneficial effects of the embodiments of the utility model are:

[0032] By setting a scale on the first measuring rod, when measuring the thickness of the valve body, when one measuring end of the first measuring rod and one measuring end of the second measuring rod are respectively against the outer peripheral wall and the inner peripheral wall of the corresponding determined position of the valve body, the pointer mark corresponding to the two measuring ends points to the scale on the scale to indicate the wall thickness of the valve body corresponding to the determined position. The thickness of the valve body can be intuitively obtained from the scale, thereby realizing rapid detection of the thickness of the cast valve body. The measuring tool has a simple structure, simple operation, and low cost for measuring the wall thickness of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0034] Figure 1 It is a structural schematic diagram of a valve body wall thickness measuring tool of the utility model.

[0035] Figure 2 Another schematic diagram of the structure of the valve body wall thickness measuring tool of the utility model.

[0036] Figure 3 for Figure 1 or Figure 2 A partial enlarged view of E.

[0037] Figure 4 This is another structural schematic diagram of the valve body wall thickness measuring tool of the utility model.

[0038] Figure numerals: 1. first measuring rod; 101. first semicircular arc portion; 102. first straight portion; 103. first arc-shaped portion; 104. second straight portion; 2. second measuring rod; 201. second semicircular arc portion; 202. third straight portion; 203. second arc-shaped portion; 204. fourth straight portion; 3. dial; 4. fixing pin; 5. locking nut; 6. fixing hole; 7. first measuring end; 8. second measuring end; 9. third measuring end; 10. fourth measuring end; 11. pointer mark; 12. zero position mark; 13. welding point; 14. first avoidance area; 15. second avoidance area. DETAILED DESCRIPTION

[0039] Various aspects and features of the present invention are described herein with reference to the accompanying drawings.

[0040] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of the embodiments. Other modifications within the scope and spirit of the present utility model will occur to those skilled in the art.

[0041] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0042] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0043] It should also be understood that, although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention with certainty, which have features such as the above-mentioned "utility model content" and are therefore within the scope of protection defined thereby.

[0044] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0045] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as the basis and representative basis for the above-mentioned "utility model content" to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0046] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0047] In order to solve the problems in the background technology, the utility model provides a tool for measuring the wall thickness of a valve body. Figure 1 and Figure 2 The valve body wall thickness measuring tool comprises a first measuring rod 1, a second measuring rod 2 and a dial 3.

[0048] The first measuring rod 1 and the second measuring rod 2 are cross-arranged and hinged at the middle of the two, so that the first measuring rod 1 and the second measuring rod 2 form a scissor shape. At least one end of the first measuring rod 1 and at least one end of the second measuring rod 2 are respectively formed with a measuring end. When measuring the wall thickness of the valve body, one measuring end of the first measuring rod 1 is used in conjunction with one measuring end of the second measuring rod 2.

[0049] The scale plate 3 is fixed to the middle of the first measuring rod 1, combined with Figure 3 , a zero mark 12 is provided on the side of the first measuring rod 1 that is biased toward its measuring end, and the zero mark 12 always points to the zero scale of the dial 3. That is, the dial 3 fixed on the first measuring rod 1 moves together with the first measuring rod 1, and the position of the zero mark 12 relative to the dial 3 remains unchanged. A pointer mark 11 is provided on the side of the second measuring rod 2 that is biased toward its measuring end, and the pointer mark 11 points to the scale on the dial 3. When the first measuring rod 1 and the second measuring rod 2 rotate relative to their hinged connection position, that is, when the first measuring rod 1 and the second measuring rod 2 perform a scissor-like action, the pointer mark 11 on the second measuring rod 2 will rotate with the second measuring rod 2 relative to the first measuring rod 1, and the angle between the first measuring rod 1 and the second measuring rod 2 will change, and the pointer mark 11 will point to scales at different positions on the dial 3. Of course, it is understandable that the scale plate 3 can also be fixedly arranged on the second measuring rod 2, the zero mark 12 is arranged at the corresponding position of the second measuring rod 2, and the pointer mark 11 is arranged at the corresponding position of the first measuring rod 1. Synonyms are used as examples and do not constitute a limitation on the scope of protection of the claims.

[0050] When one measuring end of the first measuring rod 1 and one measuring end of the second measuring rod 2 are respectively against the outer peripheral wall and the inner peripheral wall of the corresponding valve body determination position, the pointer mark 11 corresponding to the two measuring ends points to the scale on the dial 3 to indicate the wall thickness of the valve body corresponding to the determination position. That is, when measuring the wall thickness of the valve body, one measuring end of a measuring rod extends into the valve body, and the measuring end of the measuring rod is against the inner peripheral wall of the valve body; at the same time, one measuring end of the other measuring rod is located outside the valve body, and the measuring end of the measuring rod is against the outer peripheral wall of the valve body; at this time, the position line connecting the two measuring ends against the inner peripheral wall and the outer peripheral wall of the valve body is along the radial direction of the valve body, that is, the straight-line distance between the two measuring ends against the inner peripheral wall and the outer peripheral wall of the valve body and the hinge position of the first measuring rod 1 and the second measuring rod 2 is the same, so as to ensure the accurate measurement of the valve body wall thickness by the first measuring rod 1 and the second measuring rod 2. Then read the scale value corresponding to the pointer mark 11 on the dial 3, and the scale value is used to feedback the wall thickness of the valve body corresponding to the determination position. The measurement personnel can intuitively read the scale value on the dial 3, and then can intuitively obtain the thickness of the valve body from the dial 3, thereby realizing rapid detection of the thickness of the cast valve body. The measuring tool has a simple structure and is easy to operate. Compared with the prior art using dedicated equipment measurement or laser measurement technology, the embodiment of the utility model reduces the cost of measuring the wall thickness of the valve body.

[0051] In one embodiment of the present invention, both ends of the first measuring rod 1 and both ends of the second measuring rod 2 are formed with measuring ends.

[0052] A first fixing hole penetrating the first measuring rod 1 is provided in the middle of the first measuring rod 1 , and the center of the first fixing hole is located at the midpoint of the line connecting the two measuring ends of the first measuring rod 1 .

[0053] A second fixing hole penetrating the second measuring rod 2 is provided in the middle of the second measuring rod 2 , and the center of the second fixing hole is located at the midpoint of the line connecting the two measuring ends of the second measuring rod 2 .

[0054] A through hole is provided at the center of the scale plate 3, and the through hole is coaxially arranged with the first fixing hole and the second fixing hole. The first fixing hole and the second fixing hole are collectively referred to as the fixing hole 6, and the aperture of the fixing hole 6 and the through hole is d, preferably, 5mm≤d≤10mm. Of course, it can be understood that the size of d can be set according to actual needs.

[0055] The valve body wall thickness measuring tool also includes a fixing pin 4, which passes through the first fixing hole, the second fixing hole and the through hole to realize the hinge connection between the first measuring rod 1 and the second measuring rod 2. Specifically, the middle part of the fixing pin 4 is a smooth rod, and the two ends of the fixing pin 4 are threaded rods, which are respectively matched with two locking nuts 5. The diameter of the smooth rod portion in the middle of the fixing pin 4 is d', preferably 5mm≤d'≤10mm; the outer diameter of the threaded rod of the fixing pin 4 is d", preferably 5mm≤d"≤10mm.

[0056] In order to facilitate reading of the scale on the dial 3, the first fixing hole is set at the midpoint of the line connecting the two measuring ends of the first measuring rod 1, and the second fixing hole is set at the midpoint of the line connecting the two measuring ends of the second measuring rod 2. That is, when one measuring end of the first measuring rod 1 and one measuring end of the second measuring rod 2 are respectively against the inner peripheral wall and the outer peripheral wall of the valve body, the straight-line distance A (or C) between the two measuring ends is the same as the straight-line distance B (or D) between the other measuring end of the first measuring rod 1 and the other measuring end of the second measuring rod 2. However, due to the influence of the measuring angle or the measuring position, it may be inconvenient to directly read the scale value corresponding to the measuring end deep into the valve body. Therefore, the measurement result of the valve body wall thickness can be obtained by reading the scale corresponding to the other measuring end of the first measuring rod 1 and the other measuring end of the second measuring rod 2 on the dial 3.

[0057] In one embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 The two ends of the first measuring rod 1 are respectively formed with a first measuring end 7 and a second measuring end 8; the two ends of the second measuring rod 2 are respectively formed with a third measuring end 9 and a fourth measuring end 10.

[0058] The first measuring rod 1 comprises a first curved portion extending from the first fixing hole to the first measuring end 7 and a second curved portion extending from the first fixing hole to the second measuring end 8 .

[0059] The second measuring rod 2 includes a third curved portion extending from the second fixing hole to the third measuring end 9 and a fourth curved portion extending from the second fixing hole to the fourth measuring end 10 .

[0060] The first curved portion and the third curved portion or the fourth curved portion enclose a first avoidance area 14 convex outward, and the second curved portion and the fourth curved portion or the third curved portion enclose a second avoidance area 15 convex outward. The curvature of the first curved portion and the third curved portion can be greater than the curvature of the second curved portion and the fourth curved portion, that is, the second curved portion and the fourth curved portion are straighter than the first curved portion and the third curved portion. When in use, affected by the structure of the valve body, for example, a connecting flange is generally provided at the end of the valve body. In order to avoid the connecting flange affecting the measurement of the measuring tool, the first measuring rod 1 and the second measuring rod 2 can be designed with the above structure to form the first avoidance area 14 and the second avoidance area 15. Then, during measurement, the connecting flange is avoided by the first avoidance area 14 or the second avoidance area 15 to ensure accurate measurement of the valve body wall thickness. During measurement, if the aperture of the valve body is relatively large, the first measuring end 7 and the third measuring end 9 can be used in conjunction with each other to measure the wall thickness of the valve body, that is, the first avoidance area 14 surrounded by the first curved portion and the third curved portion is used to avoid the connecting flange; and if the aperture of the valve body is relatively small, the first measuring end 7 can be used in conjunction with the fourth measuring end 10, and the straighter fourth curved portion of the second measuring rod 2 is inserted deeper into the valve body, so that the fourth measuring end 10 is against the inner peripheral wall of the valve body, and the first measuring end 7 is against the outer peripheral wall of the valve body to measure the wall thickness, that is, the first avoidance area 14 surrounded by the first curved portion and the fourth curved portion is used to avoid the connecting flange; of course, the aperture of the valve body When the diameter is smaller, the second measuring end 8 can also be used in conjunction with the third measuring end 9. At this time, the second curved portion needs to be inserted deep into the valve body and the second measuring end 8 is against the inner circumferential wall of the valve body, and the third measuring end 9 is against the outer circumferential wall of the valve body, that is, the second avoidance area 15 surrounded by the second curved portion and the third curved portion is used to avoid the connecting flange; the second measuring end 8 can also be used in conjunction with the fourth measuring end 10, the second measuring end 8 (or the fourth measuring end 10) is against the inner circumferential wall of the valve body, and the fourth measuring end 10 (or the second measuring end 8) is against the outer circumferential wall of the valve body, that is, the second avoidance area 15 surrounded by the second curved portion and the fourth curved portion is used to avoid the connecting flange.

[0061] The above different measuring ends can be used in combination according to the needs, with strong operability, and are suitable for measuring the wall thickness of different types of valve bodies.

[0062] In an embodiment of the present invention, the first measuring rod 1 and the second measuring rod 2 have the same structure and are symmetrically arranged.

[0063] Combine again Figure 1 , Figure 2 and Figure 4The first curved portion at least includes a first semicircular arc portion 101, and the first semicircular arc portion 101 protrudes in a direction away from the third curved portion or the fourth curved portion. That is, when the first measuring end 7 is used in conjunction with the third measuring end 9, the first semicircular arc portion 101 protrudes in a direction away from the third curved portion; when the first measuring end 7 is used in conjunction with the fourth measuring end 10, the first semicircular arc portion 101 protrudes in a direction away from the fourth curved portion.

[0064] The third curved portion at least includes a second semicircular arc portion 201, and the second semicircular arc portion 201 protrudes in a direction away from the first curved portion or the second curved portion. That is, when the third measuring end 9 is used in conjunction with the first measuring end 7, the second semicircular arc portion 201 protrudes in a direction away from the first curved portion; when the third measuring end 9 is used in conjunction with the second measuring end 8, the second semicircular arc portion 201 protrudes in a direction away from the second curved portion.

[0065] Of course, it is understandable that the first semicircular arc portion 101 and the second semicircular arc portion 201 may also be set to other curved shapes, which is only used as an example and does not constitute a limitation on the scope of protection of the claims.

[0066] In an embodiment of the present invention, the first curved portion further includes a first straight portion 102 , one end of the first straight portion 102 is located at the first fixing hole, and the other end of the first straight portion 102 extends to one end of the first semicircular arc portion 101 .

[0067] The second curved portion also includes a first arc portion 103 and a second straight portion 104 , the first arc portion 103 protrudes in a direction away from the fourth curved portion or the third curved portion; the second straight portion 104 is located at the first fixing hole, and the other end of the second straight portion 104 extends to one end of the first arc portion 103 .

[0068] The third curved portion further includes a third straight portion 202 , one end of the third straight portion 202 is located at the second fixing hole, and the other end of the third straight portion 202 extends to one end of the second semicircular arc portion 201 .

[0069] The fourth curved portion also includes a second arc portion 203 and a fourth straight portion 204 , the second arc portion 203 protrudes in a direction away from the first curved portion or the second curved portion; the fourth straight portion 204 is located at the second fixing hole, and the other end of the fourth straight portion 204 extends to one end of the second arc portion 203 .

[0070] The first measuring rod 1 is provided with two zero position marks 12 and two pointer marks 11. The two zero position marks 12 are respectively provided on the first straight portion 102 and the second straight portion 104, and the two zero position marks 12 are located on the same straight line. The two pointer marks 11 are respectively provided on the third straight portion 202 and the fourth straight portion 204, and the two pointer marks 11 are located on the same straight line. With the two zero position marks 12 and the two pointer marks 11 located on the same straight line, when the wall thickness of the valve body is measured by coordinating one measuring end of the first measuring rod 1 with one measuring end of the second measuring rod 2, the scale corresponding to the pointer mark 11 on the scale plate 3 can be read through the zero position mark 12 and the pointer mark 11 corresponding to the other measuring end of the first measuring rod 1 and the other measuring end of the second measuring rod 2, so that the reading of the data on the scale plate 3 is convenient.

[0071] In one embodiment of the utility model, when the first curved portion and the third curved portion enclose a first avoidance area 14 protruding outward, the first measuring end 7 and the third measuring end 9 extend in a direction close to each other, and the second measuring end 8 and the fourth measuring end 10 extend in a direction close to each other, and each measuring end forms a tip at the end of its extension, and the tip is provided with a round chamfer. The above-mentioned extension relationship of the measuring end enables the measuring end to form an abutment relationship with the inner circumferential wall and the outer circumferential wall of the valve body at the determined position, thereby ensuring the accuracy of the measurement result. In addition, the tip is rounded to prevent the tip from scratching the valve body or the user of the measuring tool, thereby ensuring the safety of the measuring tool.

[0072] In one embodiment of the utility model, when the end of one measuring end of the first measuring rod 1 contacts the end of one measuring end of the second measuring rod 2, the pointer mark 11 points to the zero scale on the dial 3 to ensure that the pointer mark 11 is deflected from the zero scale of the dial 3 to ensure the accuracy of the valve body wall thickness measurement result.

[0073] In one embodiment of the utility model, the scale plate 3 is welded and fixed on the first measuring rod 1, or the scale plate 3 is welded and fixed on the second measuring rod 2. As shown in the figure, a welding point 13 is formed between the scale plate 3 and the first measuring rod 1. Of course, it is understandable that the scale plate 3 can also be fixed on the first measuring rod 1 or the second measuring rod 2 in other ways. Whether the scale plate 3 is set on the first measuring rod 1 or the second measuring rod 2, it is sufficient to ensure that the side of the scale plate 3 with the scale is outward.

[0074] In one embodiment of the utility model, the first measuring rod 1 and the second measuring rod 2 are made of metal plates. For example, the first measuring rod 1 and the second measuring rod 2 can be made of, but not limited to, steel plates cut, and the thickness of the steel plates is h, preferably 3mm≤h≤5mm.

[0075] The scales on the dial 3 are evenly arranged, and the scales are used to indicate the angle between the first measuring rod 1 and the second measuring rod 2. The angle has a one-to-one correspondence with the wall thickness of the corresponding determined position of the valve body. According to the reading of the angle on the dial 3, the valve body wall thickness value uniquely determined by the reading can be determined. Of course, the scale on the dial 3 can also directly indicate the valve body wall thickness value. The measuring tool can intuitively obtain the thickness of the valve body from the dial 3 without the aid of tools such as a vernier caliper, thereby realizing rapid detection of the valve body thickness.

[0076] The above describes in detail a number of embodiments of the present invention, but the present invention is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concept of the present invention, and these variations and modifications should all fall within the scope of protection claimed by the present invention.

Claims

1. Valve body wall thickness measuring tool, characterized in that: It includes a first measuring rod, a second measuring rod and a dial; The first measuring rod and the second measuring rod are arranged crosswise, and the middle parts of the two are hinged; at least one end of the first measuring rod and at least one end of the second measuring rod are respectively formed with a measuring end; The scale plate is fixed to the middle of the first measuring rod, a zero mark is provided on one side of the first measuring rod towards its measuring end, and the zero mark points to the zero mark of the scale plate; a pointer mark is provided on one side of the second measuring rod towards its measuring end, and the pointer mark points to the mark on the scale plate; When one measuring end of the first measuring rod and one measuring end of the second measuring rod respectively contact the outer wall and inner wall corresponding to the determined position of the valve body, the pointer marking corresponding to the two measuring ends points to the scale on the dial to indicate the wall thickness of the valve body corresponding to the determined position.

2. The valve body wall thickness measuring tool according to claim 1, characterized in that: Both ends of the first measuring rod and both ends of the second measuring rod are formed with measuring ends; A first fixing hole penetrating the first measuring rod is provided in the middle of the first measuring rod, and the center of the first fixing hole is located at the midpoint of a line connecting two measuring ends of the first measuring rod; A second fixing hole penetrating the second measuring rod is provided in the middle of the second measuring rod, and the center of the second fixing hole is located at the midpoint of the line connecting the two measuring ends of the second measuring rod; A through hole penetrating the scale plate is provided at the center of the scale plate, and the through hole is coaxially arranged with the first fixing hole and the second fixing hole; The valve body wall thickness measuring tool further comprises a fixing pin, and the fixing pin passes through the first fixing hole, the second fixing hole and the through hole to realize the hinge connection between the first measuring rod and the second measuring rod.

3. The valve body wall thickness measuring tool according to claim 2, characterized in that: The two ends of the first measuring rod are respectively formed with a first measuring end and a second measuring end; the two ends of the second measuring rod are respectively formed with a third measuring end and a fourth measuring end; The first measuring rod comprises a first curved portion extending from the first fixing hole to the first measuring end and a second curved portion extending from the first fixing hole to the second measuring end; The second measuring rod comprises a third curved portion extending from the second fixing hole to the third measuring end and a fourth curved portion extending from the second fixing hole to the fourth measuring end; The first curved portion and the third curved portion or the fourth curved portion enclose a first avoidance area convex outwardly, and the second curved portion and the fourth curved portion or the third curved portion enclose a second avoidance area convex outwardly.

4. The valve body wall thickness measuring tool according to claim 3, characterized in that: The first measuring rod and the second measuring rod have the same structure and are symmetrically arranged; The first curved portion at least includes a first semicircular arc portion, and the first semicircular arc portion protrudes in a direction away from the third curved portion or the fourth curved portion; The third curved portion at least includes a second semicircular arc portion, and the second semicircular arc portion protrudes in a direction away from the first curved portion or the second curved portion.

5. The valve body wall thickness measuring tool according to claim 4, characterized in that: The first curved portion further includes a first straight portion, one end of the first straight portion is located at the first fixing hole, and the other end of the first straight portion extends to one end of the first semicircular arc portion; The second curved portion further includes a first arc portion and a second straight portion, the first arc portion protrudes in a direction away from the fourth curved portion or the third curved portion; the second straight portion is located at the first fixing hole, and the other end of the second straight portion extends to one end of the first arc portion; The third curved portion further includes a third straight portion, one end of the third straight portion is located at the second fixing hole, and the other end of the third straight portion extends to one end of the second semicircular arc portion; The fourth curved portion further includes a second arc portion and a fourth straight portion, wherein the second arc portion protrudes in a direction away from the first curved portion or the second curved portion; the fourth straight portion is located at the second fixing hole, and the other end of the fourth straight portion extends to one end of the second arc portion; The first measuring rod is provided with two zero position marks and two pointer marks, the two zero position marks are respectively provided on the first straight portion and the second straight portion, and the two zero position marks are located on the same straight line, and the two pointer marks are respectively provided on the third straight portion and the fourth straight portion, and the two pointer marks are located on the same straight line.

6. The valve body wall thickness measuring tool according to claim 4, characterized in that: When the first curved portion and the third curved portion form a first avoidance area convex outward, the first measuring end and the third measuring end extend in a direction approaching each other, and the second measuring end and the fourth measuring end extend in a direction approaching each other, and each measuring end forms a tip at the end of its extension, and the tip is provided with a round chamfer.

7. The valve body wall thickness measuring tool according to claim 6, characterized in that: When the end of one measuring end of the first measuring rod contacts the end of one measuring end of the second measuring rod, the pointer mark points to the zero scale on the dial.

8. The valve body wall thickness measuring tool according to claim 1, characterized in that: The scale plate is welded and fixed on the first measuring rod.

9. The valve body wall thickness measuring tool according to claim 1, characterized in that: The first measuring rod and the second measuring rod are made of metal plates.

10. The valve body wall thickness measuring tool according to claim 1, characterized in that: The scales on the scale plate are evenly arranged, and the scales are used to indicate the angle between the first measuring rod and the second measuring rod, and the angle has a one-to-one correspondence with the wall thickness of a corresponding determined position of the valve body.

Images