Valve end flange hole site diameter measuring tool

Abstract

The utility model relates to the technical field of tool measurement, and discloses a valve end flange hole site diameter measuring tool which comprises a guide rail seat, fixing rods are uniformly and symmetrically arranged on the periphery of the top end of the guide rail seat, and the bottom ends of the fixing rods are fixedly connected with the guide rail seat through arranged bottom fixing screws. According to the utility model, the guide rail rod is arranged on the guide rail seat, the two movable sliding blocks are arranged on the guide rail rod in a sliding manner, and the hole site diameter measuring plate and the measuring block are arranged at the top ends of the movable sliding blocks, so that the diameter of a flange hole and the diameter of a hole center circle can be detected at one time; the measuring precision can be ensured while the working efficiency is improved, the steps for measuring the diameter of the center circle of the flange hole can be greatly reduced, the measuring efficiency of the diameter of the flange hole site is improved, the position and size of the hole are measured through the measuring block, the measuring error of a person or a caliper can be reduced, and the measuring and using of a user are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tool measurement, in particular to a tool for measuring the diameter of a valve end flange hole. Background Art

[0002] The pipeline valve needs to be connected to the pipeline, and the valve end flange is fastened to the pipeline flange by bolts. In order to ensure that the pipeline valve can be connected to the pipeline normally, the API6D-2 measuring base plate (8) puts forward specific requirements for the coaxiality of the bolt holes of the flanges at both ends of the pipeline valve, that is, for valves with specifications of DN100 (NPS4) and below, the maximum total allowable displacement of the bolt hole shall not exceed 2mm (0.079 inches), and for valves with specifications above DN100 (NPS4), the maximum total allowable displacement of the bolt hole shall not exceed 3mm (0.118 inches).

[0003] And for valves with segmented valve bodies, such as ball valves, due to processing and assembly errors, the flanges at both ends of the valve will deviate, and the bolt holes will not be in the same position, making it impossible to install it on the pipeline device. Therefore, it is necessary to measure the hole diameter of the valve end flange.

[0004] The existing valve end flange hole diameter measuring device usually uses a caliper to first measure the maximum distance or minimum distance between two symmetrical holes, and then subtracts the diameter of the corresponding hole. Such measurement will have errors and is inefficient. If the hole diameter and the hole center circle diameter are measured incorrectly, it will cause the connecting pipe end to fail to be installed with the customer, and the valve body will be scrapped. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tool for measuring the hole diameter of a valve end flange, which solves the problem that the existing valve end flange hole diameter measuring device usually uses a caliper to first measure the maximum distance or the minimum distance between two symmetrical holes, and then subtracts the diameter of the corresponding hole. Such measurement will have errors and is inefficient. If the diameter of the hole and the diameter of the center circle of the hole are measured incorrectly, it will cause the connecting pipe end to fail to be installed with the customer, thereby causing the valve body to be scrapped.

[0006] The utility model provides the following technical solution: a valve end flange hole diameter measuring tool, comprising a guide rail seat, the top of the guide rail seat is evenly and symmetrically provided with fixing rods, the bottom end of the fixing rod is fixedly connected to the guide rail seat by a bottom fixing screw, and the top of the guide rail seat is provided with a guide rail;

[0007] The bottom end of the guide rail seat is evenly provided with a plurality of guide rail fixing screws, the guide rail rod and the guide rail seat are fixedly connected by the guide rail fixing screws, two movable slide blocks are provided on the guide rail rod, a movable slide groove is provided in the middle of the movable slide block, the guide rail rod passes through the movable slide groove, a measuring base plate is provided at the top of the movable slide block, and the two sides of the measuring base plate are connected to the movable slide block by symmetrically arranged base plate fixing screws, a hole position diameter measuring plate is vertically provided at the top of the measuring base plate, and a plurality of flange positioning holes are symmetrically opened on the hole position diameter measuring plate, a fastening screw is provided in the middle of the outer side of the movable slide block, and a bearing is provided in the movable slide block.

[0008] Preferred technical solution 1: Both sides of the bearing are connected to the movable slider via symmetrically arranged elastic retaining rings, and a set screw is arranged in the middle of the movable slider.

[0009] Preferred technical solution 2: Two measuring blocks are arranged on the side of the hole diameter measuring plate, and the measuring blocks are fixedly connected to the flange positioning holes by connecting screws inserted into the flange positioning holes.

[0010] Preferred technical solution three: the movable slide groove is in a semicircular shape that matches the guide rail rod.

[0011] This solution can make the movable slider slide on the guide rail rod more smoothly.

[0012] Preferred technical solution four: a plurality of flange positioning holes are symmetrically arranged, and the diameters of the plurality of flange positioning holes are different.

[0013] This solution can make the flange positioning hole correspond more accurately to the mounting hole on the valve flange to be measured.

[0014] Preferred technical solution five: A screw hole is provided on the side of the measuring block, and the end of the connecting screw is inserted into the screw hole.

[0015] This solution enables the measuring block to be quickly installed on the side of the hole diameter measuring plate through fixing.

[0016] Compared with the prior art, the utility model provides a valve end flange hole diameter measuring tool, which has the following beneficial effects:

[0017] (1) The utility model provides a guide rail rod on the guide rail seat, and two movable slide blocks are slidably provided on the guide rail rod. A hole diameter measuring plate and a measuring block are provided at the top of the movable slide block, so that when measuring the hole diameter of the valve flange, the user can use the flange positioning holes of different calibers and pound levels provided on the hole diameter measuring plate, which is more convenient for the inspection personnel to quickly find the corresponding hole position on the flange. The measuring block only needs to be installed in the corresponding position, and the diameter of the flange hole and the diameter of the hole center circle can be detected at one time, killing two birds with one stone. While improving work efficiency, it can also ensure measurement accuracy, can greatly reduce the steps in measuring the diameter of the flange hole center circle, and improve the flange hole diameter measurement efficiency. The position and size of the hole are measured by the measuring block, which can reduce the measurement error caused by human or caliper, and is more convenient for users to measure and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main cross-section of the structure of the utility model;

[0019] Figure 2 For the utility model Figure 1 A magnified view of the structure of the moving slider;

[0020] Figure 3 For the utility model Figure 1 A magnified view of the structure of the middle bearing;

[0021] Figure 4 It is a schematic side view of the structure of the utility model.

[0022] In the figure:

[0023] 1. Guide rail seat; 2. Fixing rod; 3. Bottom fixing screw; 4. Guide rail rod; 5. Guide rail fixing screw; 6. Moving slider; 7. Moving slide; 8. Measuring base plate; 9. Base plate fixing screw; 10. Hole diameter measuring plate; 11. Flange positioning hole; 12. Fastening screw; 13. Bearing; 14. Elastic retaining ring; 15. Set screw; 16. Measuring block; 17. Connecting screw. DETAILED DESCRIPTION

[0024] See also Figure 1-4 A valve end flange hole diameter measuring tool comprises a guide rail seat 1, fixing rods 2 are evenly and symmetrically arranged around the top of the guide rail seat 1, the bottom end of the fixing rod 2 is fixedly connected to the guide rail seat 1 by a bottom fixing screw 3, and a guide rod 4 is arranged on the top of the guide rail seat 1.

[0025] A plurality of guide rail fixing screws 5 are evenly arranged at the bottom end of the guide rail seat 1, and the guide rail rod 4 is fixedly connected to the guide rail seat 1 by the arranged guide rail fixing screws 5. Two movable sliders 6 are arranged on the guide rail rod 4, and a movable slide groove 7 is arranged in the middle of the movable slider 6. The guide rail rod 4 passes through the movable slide groove 7, and a measuring base plate 8 is arranged at the top of the movable slider 6.

[0026] The two sides of the measuring base plate 8 are connected to the moving slider 6 by symmetrically arranged base plate fixing screws 9, a hole diameter measuring plate 10 is vertically arranged on the top of the measuring base plate 8, and a plurality of flange positioning holes 11 are symmetrically opened on the hole diameter measuring plate 10, a fastening screw 12 is arranged in the middle of the outer side of the moving slider 6, and a bearing 13 is arranged in the fastening screw 12.

[0027] The two sides of the bearing 13 are connected to the movable slider 6 through symmetrically arranged elastic retaining rings 14, a set screw 15 is arranged in the middle of the movable slider 6, and two measuring blocks 16 are arranged on the side of the hole diameter measuring plate 10. The measuring blocks 16 are fixedly connected to the flange positioning holes 11 by connecting screws 17 inserted into the flange positioning holes 11.

[0028] Embodiment 2: The difference between this embodiment and embodiment 1 is that the movable slide groove 7 is in a semicircular shape that matches the guide rail rod 4.

[0029] This makes the movable slider 6 slide on the guide rail rod 4 more smoothly.

[0030] Embodiment 3: The difference between this embodiment and embodiment 1 is that a plurality of flange positioning holes 11 are symmetrically arranged, and the diameters of the plurality of flange positioning holes 11 are different.

[0031] This enables the flange positioning hole 11 to correspond more accurately to the mounting hole on the valve flange to be measured.

[0032] Embodiment 4: The difference between this embodiment and embodiment 1 is that a screw hole is provided on the side of the measuring block 16, and the end of the connecting screw 17 is inserted into the screw hole.

[0033] The measuring block 16 can be quickly installed on the side of the hole diameter measuring plate 10 by being fixed with the connecting screws 17 .

[0034] In this embodiment, due to the existing valve end flange hole diameter measuring device, a caliper is usually used to first measure the maximum distance or the minimum distance between two symmetrical holes, and then subtract the diameter of the corresponding hole. Such measurement will have errors and is inefficient. If the diameter of the hole and the diameter of the center circle of the hole are measured incorrectly, it will cause the connecting pipe end to the customer to fail to be installed, and the valve body will be scrapped.

[0035] In summary, in specific implementation, when the user needs to measure the diameter of the valve end flange, the user first fixes the measuring block 16 on the side of the corresponding flange positioning hole 11 on the hole diameter measuring plate 10 through the connecting screw 17, and then places the valve between the two hole diameter measuring plates 10. The user pushes the movable slider 6 to make the hole diameter measuring plate 10 approach the flanges on both sides of the valve. When the movable slider 6 is pushed to the side of the valve, the movable slider 6 is positioned and fixed to the guide rod 4 by rotating the fastening screw 12. Since a number of flange positioning holes 11 of different calibers are provided on the hole diameter measuring plate 10, after the measuring block 16 is installed in the corresponding position, the user can measure the size and position of the valve end flange hole.

[0036] By using the flange positioning holes 11 of different calibers and pound levels set on the hole diameter measuring plate 10 of the device, it is more convenient for the inspectors to quickly find the corresponding hole positions on the flange, and the measuring block 16 only needs to be installed at the corresponding position, so that the diameter of the flange hole and the diameter of the center circle of the hole can be detected at one time, killing two birds with one stone, while improving work efficiency and ensuring measurement accuracy, and can greatly reduce the steps in measuring the center circle diameter of the flange hole, thereby improving the efficiency of flange hole diameter measurement, and the position and size of the hole are measured by the measuring block 16, which can reduce the measurement errors caused by human or caliper, and is more convenient for users to measure and use.

Claims

1. A valve end flange hole diameter measuring tool, comprising a guide rail seat (1), characterized in that: Fixed rods (2) are evenly and symmetrically arranged around the top of the guide rail seat (1); the bottom end of the fixed rod (2) is fixedly connected to the guide rail seat (1) via a bottom fixing screw (3); and a guide rail rod (4) is arranged on the top of the guide rail seat (1); A plurality of guide rail fixing screws (5) are evenly arranged at the bottom end of the guide rail seat (1); the guide rail rod (4) and the guide rail seat (1) are fixedly connected by the guide rail fixing screws (5); two movable slide blocks (6) are arranged on the guide rail rod (4); a movable slide groove (7) is arranged in the middle of the movable slide block (6); the guide rail rod (4) passes through the movable slide groove (7); a measuring base plate (8) is arranged at the top end of the movable slide block (6); the two sides of the measuring base plate (8) are connected to the movable slide block (6) by base plate fixing screws (9) arranged symmetrically; a hole position diameter measuring plate (10) is vertically arranged at the top end of the measuring base plate (8); a plurality of flange positioning holes (11) are symmetrically opened on the hole position diameter measuring plate (10); a fastening screw (12) is arranged in the middle of the outer side of the movable slide block (6); a bearing (13) is arranged in the fastening screw (12); and a bearing (13) is arranged in the movable slide block (6).

2. A valve end flange hole diameter measuring tool according to claim 1, characterized in that: The two sides of the bearing (13) are connected to the movable slider (6) via symmetrically arranged elastic retaining rings (14), and a set screw (15) is arranged in the middle of the movable slider (6).

3. A valve end flange hole diameter measuring tool according to claim 2, characterized in that: Two measuring blocks (16) are arranged on the side of the hole diameter measuring plate (10), and the measuring blocks (16) are fixedly connected to the flange positioning holes (11) by connecting screws (17) inserted into the flange positioning holes (11).

4. A valve end flange hole diameter measuring tool according to claim 3, characterized in that: The movable slide groove (7) is in a semicircular shape that matches the guide rail rod (4).

5. The valve end flange hole diameter measuring tool according to claim 4, characterized in that: A plurality of flange positioning holes (11) are symmetrically arranged, and the diameters of the plurality of flange positioning holes (11) are different.

6. A valve end flange hole diameter measuring tool according to claim 5, characterized in that: The side of the measuring block (16) is provided with a screw hole, and the end of the connecting screw (17) is inserted into the screw hole.

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