Valve flange position degree checking device

Abstract

The utility model relates to a valve flange position degree checking device, which comprises an L-shaped tooling plate and a tooling bottom plate capable of sliding on the L-shaped tooling plate, at least one tooling plate positioning pin hole is respectively arranged along the length direction of the L-shaped tooling plate, a bottom plate positioning pin hole matched with the tooling plate positioning pin hole is arranged on the tooling bottom plate, and the bottom plate positioning pin hole is provided with a positioning pin hole matched with the tooling plate positioning pin hole. And the bottom plate screw holes are matched with the gland flange threaded holes for use. According to the verification device, through cooperation of the tool bottom plate and the L-shaped tool plate, only the offset of the flange holes in the two sides of the L-shaped tool plate needs to be measured during measurement, the verification device is more visual, simpler, more convenient and more operable, the verification device is not limited by the whole machine structure, and the verification accuracy and convenience are improved.

Description

Technical Field

[0001] The utility model relates to the field of ball valves, in particular to a valve flange position calibration device. Background Art

[0002] In the design process of ball valves, API 6D is the most important design reference standard for ball valves, and all products must meet the requirements of API 6D. In standard 5.2.3.1.4, the position requirements of the flange holes on both sides of the valve are clearly specified:

[0003] For valves ≤4”, the maximum allowable deviation of the bolt hole shall not exceed 2mm;

[0004] For valves larger than 4”, the maximum allowable deviation of the bolt holes shall not exceed 3mm.

[0005] The existing detection methods mainly include commonly used methods such as: marking measurement method, laser level measurement method and illumination projection method.

[0006] The above detection methods all have a disadvantage: a larger reference platform is required to perform the above operations. If the reference is not flat, even the most accurate detection instrument cannot detect the position difference normally. In addition, the illumination projection method has a large scattering and cannot accurately detect the difference. Moreover, for the whole machine whose middle cavity is larger than the end flange, due to structural limitations, the end flange hole cannot be directly projected, let alone detected. Utility Model Content

[0007] The utility model aims to provide a valve flange position calibration device, which is more intuitive, simpler, more operable and not limited by the structure of the whole machine.

[0008] In order to achieve the above-mentioned purpose, the utility model provides a valve flange position calibration device, including an L-shaped tooling plate and a tooling base plate capable of sliding on the L-shaped tooling plate, at least one tooling plate locating pin hole is respectively arranged along the length direction of the L-shaped tooling plate, and the tooling base plate is provided with a plurality of base plate locating pin holes used in conjunction with the tooling plate locating pin holes, as well as base plate screw holes used in conjunction with the threaded holes of the pressure cover flange.

[0009] Furthermore, positioning holes are provided on the tooling bottom plate.

[0010] Furthermore, a sliding hole capable of sliding on the L-shaped tooling plate is provided on the tooling bottom plate, and a width of the sliding hole is the same as a width of the L-shaped tooling plate.

[0011] Furthermore, the L-shaped tooling plate includes a long portion and a short portion perpendicular to the long portion, and the long portion and the short portion are fixed together.

[0012] Furthermore, the long portion and the short portion are integrally formed or welded together.

[0013] The utility model provides a valve flange position calibration device, which has the advantages of:

[0014] The verification device described in the present application, through the cooperation of the tooling base plate and the L-shaped tooling plate, only needs to measure the offset of the flange holes on both sides of the L-shaped tooling plate during measurement. It is more intuitive, simpler, more operational, and not limited by the structure of the whole machine, thereby improving the accuracy and convenience of inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the installation structure of the verification device of the utility model.

[0017] Figure 2 It is a side structural schematic diagram of the verification device of the utility model.

[0018] Figure 3 It is a schematic diagram of the connection between the tooling base plate and the gland flange of the utility model.

[0019] In the figure: 1. locating pin; 2. fastening screw; 3. L-shaped tooling plate; 4. clamping screw; 5. tooling base plate; 6. long part; 7. short part; 8. base plate locating pin hole; 9. locating hole; 10. gland flange; 11. base plate screw hole. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0021] Combination Figure 1-3 The present application provides a valve flange position calibration device, comprising an L-shaped tooling plate 3 and a tooling bottom plate 5 that can slide on the L-shaped tooling plate 3, wherein the L-shaped tooling plate 3 comprises a long portion 6 and a short portion 7 perpendicular to the long portion 6, both of which are made of metal materials, welded together or integrally formed. In this embodiment, the two are integrally formed, and a plurality of tooling plate positioning pin holes are provided on the long portion 6 along the length direction. The long portion 6 and the short portion 7 are both rectangular and have the same width.

[0022] At least one tooling plate locating pin hole is provided on the long portion 6 along the length direction. In this embodiment, one tooling plate locating pin hole is provided. Since the L-shaped tooling plate 3 is relatively long in overall length, it is easy to tilt up, resulting in inaccurate measurement. At the same time, due to size limitations, the L-shaped tooling plate 3 only has tooling plate locating pin holes on its surface, and cannot have threaded holes, and the threaded holes of the gland flange 10 are not provided in the center. Therefore, if only the L-shaped tooling plate 3 is used, the size of the L-shaped tooling plate 3 will be very large, which is inconvenient to operate. Therefore, in this embodiment, a tooling base plate 5 is provided. On the one hand, the L-shaped tooling plate 3 is pressed down for easy measurement. On the other hand, a base plate screw hole 11 can be provided on the tooling base plate 5, and the base plate screw hole 11 can be fixedly connected to the threaded hole of the gland flange 10.

[0023] Specifically, the tooling base plate 5 has a rectangular structure, and a sliding hole is provided on the tooling base plate 5 along the length direction, the width of the sliding hole is the same as the width of the long portion 6, so that the sliding hole can slide on the long portion 6 and thus the tooling base plate 5 slides along the length direction of the long portion 6, and the length of the long portion 6 is greater than the length of the tooling base plate 5.

[0024] In this embodiment, a plurality of base plate positioning pin holes 8 are provided on the tooling base plate 5 for use in conjunction with the tooling plate positioning pin holes, so that when the tooling base plate 5 slides, the position between the tooling base plate 5 and the long part 6 can still be fixed by the positioning pins. The base plate positioning pin holes 8 pass through the tooling base plate 5 and are perpendicular to the sliding holes.

[0025] At the same time, according to the specifications of the conventional gland flange 10, the tooling bottom plate 5 is provided with a plurality of circles of bottom plate screw hole groups, each circle of bottom plate screw hole groups includes at least two bottom plate screw holes 11, so that the tooling bottom plate 5 can be fixed to the gland flange 10 according to the specifications of different gland flanges 10. At the same time, a positioning hole 9 is also opened in the middle position of the tooling bottom plate 5, and the positioning hole 9 is connected to the sliding hole.

[0026] During specific work, first slide the tooling base plate along the long part, so that the tooling base plate slides to the appropriate position on the L-shaped tooling plate, so that the short part fits the flanges on both sides of the valve better. Use the locating pin 1 to pass through the tooling plate locating pin hole and the base plate locating pin hole 8 respectively to pre-position the tooling base plate 5, and then use the fastening screw 2 to pass through the base plate screw hole 11 of the corresponding specification and the gland flange threaded hole to fasten the tooling base plate 5 and the gland flange. Finally, use the clamping screw 4 to pass through the fixed positioning hole to further clamp the L-shaped tooling plate 3 and the tooling base plate 5, thereby fixing the L-shaped tooling plate, the tooling base plate and the gland flange.

[0027] Then use a caliper to measure the distance between the short part and the flange holes on both sides of the short part. In this way, you can intuitively observe whether there is any deviation in the flange holes and whether the deviations on both sides are within the standard range. Since the flange holes are all processed by one-time CNC programming, if the position of one hole is wrong, the positions of the other holes will also be wrong. Therefore, it is only necessary to measure the flange holes on both sides of the short part.

[0028] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A valve flange position calibration device, characterized in that: It includes an L-shaped tooling plate and a tooling base plate that can slide on the L-shaped tooling plate. At least one tooling plate positioning pin hole is arranged along the length direction of the L-shaped tooling plate. The tooling base plate is provided with a base plate positioning pin hole used in conjunction with the tooling plate positioning pin hole, and a base plate screw hole used in conjunction with the threaded hole of the pressure cover flange.

2. A valve flange position calibration device according to claim 1, characterized in that: The L-shaped tooling plate comprises a long portion and a short portion perpendicular to the long portion, and the long portion and the short portion are fixed together.

3. A valve flange position calibration device according to claim 2, characterized in that: The long portion and the short portion are integrally formed or welded together.

4. A valve flange position calibration device according to claim 1, characterized in that: The tooling bottom plate is also provided with positioning holes.

5. A valve flange position calibration device according to claim 1, characterized in that: The tooling bottom plate is provided with a sliding hole.

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