Detection jig for concentricity of measuring pipe of electromagnetic water meter

Abstract

The utility model relates to the technical field of processing and detection of water meters, in particular to a jig for detecting concentricity of a measuring pipe of an electromagnetic water meter. The device comprises a holding part, a detection pipe is installed on the upper side of the holding part, an electromagnetic water meter inner core is arranged in the detection pipe, a detection go gauge is installed on the detection pipe, and the detection go gauge is used for detecting the concentricity of the electromagnetic water meter inner core. According to the utility model, the measuring tube is inserted into the detection tube, the electrode mounting hole corresponds to the concentricity detection hole, and then the insertion rod penetrates through the concentricity detection hole and the electrode mounting hole, so that when the insertion rod penetrates through the concentricity detection hole and the electrode mounting hole at one side of the detection tube and the measuring tube, the detection tube is inserted into the electrode mounting hole; if the concentricity detection hole and the electrode mounting hole on the other side of the detection tube and the other side of the measuring tube are blocked, the concentricity of the measuring tube has a problem, and the concentricity problem of the measuring tube can be rapidly detected through the method.

Description

Technical Field

[0001] The utility model relates to the technical field of processing and detecting water meters, in particular to a detection jig for measuring the concentricity of a pipe of an electromagnetic water meter. Background Art

[0002] The existing electromagnetic water meter has two electrodes symmetrically installed on both sides of the center of the measuring tube. The function of the electrodes is to convert the magnetic signal generated by the water flow cutting the magnetic lines of force into an electrical signal and transmit it to the signal processing unit. Therefore, the concentricity of the electrodes plays a very important role in the measurement of water volume. Figure 3 As shown, the electrode is installed on the measuring tube and is located at the front of the assembly process. After the installation is completed, it is difficult to disassemble and replace it later. Therefore, it is necessary to ensure that the concentricity of the electrode is accurate before installing the electrode. In order to accurately determine the concentricity of the measuring tube, a fixture with a simple structure, easy operation, and the ability to detect the concentricity of the measuring tube is required. Utility Model Content

[0003] The purpose of the utility model is to provide a detection jig for measuring the concentricity of an electromagnetic water meter pipe, so as to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides a detection jig for measuring the concentricity of an electromagnetic water meter measuring tube, comprising a holding portion, a detection tube installed on the upper side of the holding portion, an electromagnetic water meter inner core provided inside the detection tube, a detection gauge installed on the detection tube, the detection gauge is used to detect the concentricity of the electromagnetic water meter inner core, two concentricity detection holes are centrally symmetrically provided on the side wall of the detection tube, the detection gauge comprises a holding rod and an insertion rod fixed inside the holding rod, one end of the insertion rod passes through the two concentricity detection holes in sequence.

[0005] As a further improvement of the present technical solution, the inner core of the electromagnetic water meter includes a measuring tube, and two electrode mounting holes are centrally symmetrically provided on the side wall of the measuring tube. The measuring tube is plugged into the interior of the detection tube, and the positions of the electrode mounting hole and the concentricity detection hole are correspondingly arranged.

[0006] As a further improvement of the present technical solution, one end of the insertion rod passes through the concentricity detection hole and the electrode mounting hole in sequence, and the sizes of the electrode mounting hole, the concentricity detection hole and the insertion rod are adapted to each other.

[0007] As a further improvement of the present technical solution, the holding portion includes a base, which is arranged at the bottom of the detection tube. The bottom of the detection tube is sealed by a sealing plate, and the sealing plate is fixed to the base by screws.

[0008] As a further improvement of the present technical solution, a reference line is provided on the side wall of the base, and the reference line and the line connecting the central axes of the two concentricity detection holes are in the same vertically arranged surface area.

[0009] As a further improvement of the present technical solution, a gripping handle is fixed to the middle of the side of the base away from the detection tube, and both the gripping handle and the gripping rod are provided with embossing.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the detection fixture for the concentricity of the electromagnetic water meter measuring tube, the measuring tube is inserted into the detection tube, and the electrode mounting hole and the concentricity detection hole are aligned, and then the insertion rod is passed through the concentricity detection hole and the electrode mounting hole. When the insertion rod passes through the detection tube and the concentricity detection hole and the electrode mounting hole on one side of the measuring tube, and then passes through the detection tube and the concentricity detection hole and the electrode mounting hole on the other side of the measuring tube, if there is an obstruction, it means that there is a problem with the concentricity of the measuring tube. This method can quickly detect the concentricity problem of the measuring tube, avoid the situation where a bad measuring tube is installed with an electrode in the later stage, and reduce the trouble of subsequent disassembly of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0013] Figure 2 This is a schematic diagram of the explosion structure of the overall device of the utility model;

[0014] Figure 3 This is a schematic diagram of the inner core structure of the electromagnetic water meter of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the inner core of the electromagnetic water meter of the utility model;

[0016] Figure 5 This is a schematic diagram of the structural combination of the inner core of the electromagnetic water meter of the overall device of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Grip; 11. Base; 12. Grip handle; 13. Reference line;

[0019] 2. Detection tube; 21. Concentricity detection hole;

[0020] 3. Check the gauge; 31. Grip the rod; 32. Insert the rod;

[0021] 4. Screws; 5. Inner core of electromagnetic water meter; 51. Measuring tube; 52. Electrode mounting hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] Example 1

[0025] See also Figure 1-Figure 5 As shown, this embodiment provides a detection jig for measuring the concentricity of an electromagnetic water meter measuring tube, comprising a holding portion 1, the holding portion 1 including a base 11, the base 11 being disc-shaped, a detection tube 2 being mounted on the upper side of the holding portion 1, the base 11 being arranged at the bottom of the detection tube 2, the bottom of the detection tube 2 being sealed by a sealing plate, and the sealing plate being fixed to the base 11 by screws 4, the detection tube 2 being fixed to the base 11 by screws 4, so that a complete whole is formed between the base 11 and the detection tube 2.

[0026] An electromagnetic water meter core 5 is provided inside the detection tube 2, wherein the electromagnetic water meter core 5 includes a measuring tube 51, and two electrode mounting holes 52 are symmetrically provided on the side wall of the measuring tube 51. During the assembly of the electromagnetic water meter, electrodes are installed between the two electrode mounting holes 52. However, it is troublesome to disassemble the electrodes after installation. When the concentricity of the two electrode mounting holes 52 on the measuring tube 51 does not meet the requirements, the installed electrodes need to be removed. This will not only not increase the trouble of disassembly, but will also cause waste of electrode installation due to poor production of measuring tubes 51. In order to avoid such situations, the measuring tube 51 is plugged into the inside of the detection tube 2, and a detection gauge 3 is installed on the detection tube 2. The detection gauge 3 is used to detect the concentricity of the electromagnetic water meter core 5, that is, the detection gauge 3 is used to detect the concentricity of the two electrode mounting holes 52 opened on the measuring tube 51.

[0027] Among them, two concentricity detection holes 21 are symmetrically opened on the side wall of the detection tube 2. After the measuring tube 51 is placed in the detection tube 2, the positions of the electrode mounting hole 52 and the concentricity detection hole 21 are set correspondingly, that is, the central axes of the two concentricity detection holes 21 and the central axes of the two electrode mounting holes 52 are on the same line, and then the detection gauge 3 is used to penetrate the concentricity detection holes 21 and the electrode mounting holes 52 along the direction of the central axis. Among them, the specific structure of the detection gauge 3 is: the detection gauge 3 includes a gripping rod 31 and an insertion rod 32 fixed inside the gripping rod 31, and a gripping handle 12 is fixed at the middle position of the side of the base 11 away from the detection tube 2, and the gripping handle 12 and the gripping rod 31 are both provided with embossing. The staff picks up the gripping part 1 and the detection tube 2 by gripping the handle 12, and picks up the insertion rod 32 by pinching the gripping rod 31.

[0028] When inspecting the measuring tube 51, the staff picks up the gripping rod 31, and then sequentially passes one end of the insertion rod 32 through the two concentricity detection holes 21. At the same time, the insertion rod 32 also passes through the electrode mounting hole 52 during the process of passing through the concentricity detection hole 21. The specific penetration sequence is as follows: the insertion rod 32 first passes through one of the concentricity detection holes 21, and then passes through one of the electrode mounting holes 52. The insertion rod 32 continues to move and passes through the other electrode mounting hole 52, so that one end of the insertion rod 32 leaves the measuring tube 51. Then, one end of the insertion rod 32 continues to move so that a section of the insertion rod 32 passes through the other concentricity detection hole 21, thereby completing the penetration of the detection tube 2 and the inner core 5 of the electromagnetic water meter. At the same time, the sizes of the electrode mounting hole 52, the concentricity detection hole 21 and the insertion rod 32 are adapted. When the insertion rod 32 passes through the concentricity detection hole 2 1 and the electrode mounting hole 52, the concentricity of the two electrode mounting holes 52 on the measuring tube 51 is determined according to the smoothness of the concentricity detection hole 21 of the insertion rod 32 and the electrode mounting hole 52. When the insertion rod 32 passes through the electrode mounting hole 52 smoothly, it means that the concentricity of the two electrode mounting holes 52 meets the standard, and the electrodes can be installed normally in the later stage. When the insertion rod 32 cannot pass through the electrode mounting hole 52 smoothly, such as when it passes through, it takes a lot of force or cannot penetrate, it means that the concentricity of the two electrode mounting holes 52 is poor. After the electrodes are installed in the later stage, the electrodes still need to be removed. Through this method, the concentricity problem of the measuring tube 51 can be quickly detected, thereby avoiding the occurrence of poor measuring tube 51 when installing electrodes in the later stage, and reducing the trouble of subsequent electrode removal.

[0029] In order to make it easier for staff to judge whether the position of the insertion rod 32 inserted into the concentricity detection hole 21 is standard, a reference line 13 is set on the side wall of the base 11, and the reference line 13 and the line connecting the central axes of the two concentricity detection holes 21 are set in the same vertical setting surface area. When the insertion rod 32 is inserted into the concentricity detection hole 21, the position of the insertion rod 32 is determined by visually observing the reference line 13 and the position of the insertion rod 32 to determine whether the position of the insertion rod 32 is tilted, thereby further improving the accuracy of the concentricity detection of the electrode mounting hole 52 by the insertion rod 32.

[0030] At the same time, the detection tube 2 can be replaced with the corresponding size according to the size of the measuring tube 51, so that when the electrode mounting hole 52 is aligned with the concentricity detection hole 21, the gap between the detection tube 2 and the measuring tube 51 will not be too large, so as to avoid the gap between the detection tube 2 and the measuring tube 51 being too large and affecting the concentricity detection of the electrode mounting hole 52.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection jig for measuring the concentricity of an electromagnetic water meter tube, comprising a gripping portion (1), a detection tube (2) being mounted on the upper side of the gripping portion (1), an electromagnetic water meter inner core (5) being disposed inside the detection tube (2), and characterized in that: A detection gauge (3) is installed on the detection tube (2), and the detection gauge (3) is used to detect the concentricity of the inner core (5) of the electromagnetic water meter. Two concentricity detection holes (21) are centrally symmetrically provided on the side wall of the detection tube (2). The detection gauge (3) comprises a gripping rod (31) and an inserting rod (32) fixed inside the gripping rod (31), and one end of the inserting rod (32) passes through the two concentricity detection holes (21) in sequence.

2. The electromagnetic water meter tube concentricity detection jig according to claim 1, characterized in that: The electromagnetic water meter inner core (5) comprises a measuring tube (51), two electrode mounting holes (52) are centrally symmetrically provided on the side wall of the measuring tube (51), the measuring tube (51) is plugged into the interior of the detection tube (2), and the positions of the electrode mounting holes (52) and the concentricity detection hole (21) are correspondingly arranged.

3. The detection jig for measuring the concentricity of the electromagnetic water meter tube according to claim 1, characterized in that: One end of the insertion rod (32) passes through the concentricity detection hole (21) and the electrode mounting hole (52) in sequence, and the sizes of the electrode mounting hole (52), the concentricity detection hole (21) and the insertion rod (32) are adapted to each other.

4. The detection jig for measuring the concentricity of the electromagnetic water meter tube according to claim 1, characterized in that: The gripping portion (1) comprises a base (11), the base (11) being arranged at the bottom of the detection tube (2), the bottom of the detection tube (2) being sealed by a sealing plate, and the sealing plate being fixed to the base (11) by screws (4).

5. The detection jig for measuring the concentricity of the electromagnetic water meter tube according to claim 4, characterized in that: A reference line (13) is provided on the side wall of the base (11), and a line connecting the reference line (13) and the central axes of the two concentricity detection holes (21) is in the same vertical setting area.

6. The detection jig for measuring the concentricity of the electromagnetic water meter tube according to claim 4, characterized in that: A gripping handle (12) is fixed at a middle position on a side of the base (11) away from the detection tube (2), and both the gripping handle (12) and the gripping rod (31) are provided with embossing.

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