A water meter sensor positioning and sealing structure

Abstract

The utility model relates to the water meter sensor installation field, specifically point to a kind of water meter sensor positioning and sealing structure, including, the copper column of top containing process hole and multiple positioning ears, and internal structure is kept flush with copper column top surface by reasonable arrangement, and the pipe segment that forms the hard limit of sealing pad etc.;The utility model compared with prior art has the advantages that: positioning ear is additionally arranged on copper column instead of positioning pin column, avoids the damage to sealing pad, and guarantees sealing performance;The internal structure arrangement of pipe segment forms hard limit condition, effectively controls the compression amount of sealing pad;Process hole is additionally arranged on the upper portion of copper column, can additionally match a screw, and copper column is conveniently detached in pipe segment.

Description

Technical Field

[0001] This utility model relates to the field of water meter sensor installation, specifically to a water meter sensor positioning and sealing structure. Background Technology

[0002] Water meter sensors are used to test and monitor the flow rate of water in water pipes. They measure the flow by contacting the water flow with their own flow measurement components. The flow measurement module is mounted on a copper column, which is inserted into the pipe section of the instrument and fixed in place using a threaded pressure ring.

[0003] Currently, there are two main types of large-diameter ultrasonic water meters on the market: angled insertion type and column type. Both types have the following problems with sensor sealing:

[0004] 1. Without hard limit, the compression of the sealing gasket is not fixed. Insufficient compression can easily lead to leakage, while excessive compression can cause permanent failure of the sealing gasket. The oblique insertion type can even cause the sensor to fail due to excessive external force.

[0005] 2. The column-type positioning method is in the form of pins, which requires corresponding holes to be machined on pipe sections, fittings and gaskets. There are at least 3 fittings, resulting in low processing efficiency, high assembly complexity, and large cumulative tolerances in processing and assembly, making it difficult to guarantee product consistency.

[0006] 3. The positioning pin and the pipe section are interference fit, while the pin and the copper column are clearance fit. During installation, the positioning pin may fall off.

[0007] Therefore, a water meter sensor positioning and sealing structure is provided. Utility Model Content

[0008] I. Technical problems to be solved

[0009] The technical problem this invention aims to solve is that the current installation structures of flow meters all suffer from poor sealing performance.

[0010] II. Technical Solution

[0011] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a water meter sensor positioning and sealing structure, comprising: a body as the main structure of the water meter sensor, wherein pipe sections distributed around the body are connected to the body, and copper columns for supporting the sensor installation are installed in the pipe sections.

[0012] The top of the pipe section is made of screw holes and the bottom is made of countersunk holes. The inner diameter of the countersunk holes is smaller than that of the screw holes, and the copper pillars are arranged and filled in the countersunk holes.

[0013] The top of the copper column is connected to a disc with outward-expanding edges. A recessed groove with the same outline as the disc is opened at the junction of the screw hole and the countersunk hole. When the copper column is placed in the pipe section, the top surface of the disc and the top edge of the recessed groove are kept flush with each other.

[0014] An annular sealing gasket is installed between the bottom of the disc and the sinking groove. The screw hole internal thread connection is equipped with a pressure ring that uses a threaded structure to lock the copper column in place within the pipe section.

[0015] The copper column is provided with semi-circular positioning ears on both sides of its top, and the pipe section is provided with positioning grooves that cooperate with the supporting ears in the sinking groove.

[0016] A process hole is provided at the center of the top of the copper column, which is a screw hole. This provides a space for a screw to be threaded and connected later, and the copper column can be easily lifted and removed from the pipe section by the screw.

[0017] Furthermore, an end cap is installed on the top of the pipe section.

[0018] Furthermore, the pressure ring is a stud with a hexagonal through hole inside, and its inner and outer diameters are arranged to be smaller and larger than the outer diameter of the disc, respectively. It is installed in the pipe section by threaded connection with the screw hole and pressed down to fix the copper stud.

[0019] Furthermore, the disc is placed in the sinking groove to obtain a downward limiting effect and precisely limit the amount of compression of the sealing gasket, so that the amount of compression of the sealing gasket is 1 / 3 of its thickness.

[0020] Furthermore, the top of the disk is provided with a recessed space to make way for the pressure ring, and the process hole is arranged at the bottom of the recessed space.

[0021] Furthermore, a flow measurement module, serving as a sensor component, is installed at the bottom of the copper pillar.

[0022] Furthermore, the copper pillar is provided with several wiring channels that cooperate with the current measurement module.

[0023] III. Beneficial Effects

[0024] The advantages of this utility model compared with the prior art are as follows:

[0025] 1. Add positioning ears to the top of the copper column and make positioning grooves in the pipe section. The positioning ears are embedded in the positioning grooves, which replaces the connection method of the positioning pins passing through the top disc of the copper column, the sealing gasket and the bearing part of the pipe section in sequence. This avoids the need to make grooves on the sealing gasket, thereby reducing damage to the sealing components and ensuring sealing performance.

[0026] 2. At the top of the copper column in the pipe section, a sinking groove is added. The top disc of the copper column is placed in the sinking groove and is flush with the upper edge of the pipe section, forming a hard limiting structure condition, which effectively controls the amount of compression of the lower sealing gasket, so as to reliably seal and prevent the sealing ring from failing.

[0027] 3. Adopt a suitable structural arrangement at the top of the copper column and add process holes to facilitate the easy removal of the copper column from the pipe section later by using a screw in conjunction with the process holes. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external structure of a water meter sensor positioning and sealing structure according to this utility model. Figure 1 .

[0029] Figure 2 This is a schematic diagram of the external structure of a water meter sensor positioning and sealing structure according to this utility model. Figure 2 .

[0030] Figure 3 This is a schematic diagram of the external structure of a water meter sensor positioning and sealing structure according to this utility model. Figure 3 .

[0031] Figure 4 This is a schematic diagram of the internal structure of a water meter sensor positioning and sealing structure pipe section from a side sectional view. Figure 1 .

[0032] Figure 5 This is a schematic diagram of the internal structure of a water meter sensor positioning and sealing structure pipe section from a side sectional view. Figure 2 .

[0033] Figure 6 This is a schematic diagram of the internal structure of a water meter sensor positioning and sealing structure pipe section from an overhead view.

[0034] As shown in the figure: 1. Body, 2. Pipe section, 3. End cap, 4. Pressure ring, 5. Sealing gasket, 6. Copper pillar, 7. Flow measurement module, 8. Process hole, 9. Positioning ear, 10. Wiring channel. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a water meter sensor positioning and sealing structure, combined with the attached... Figure 1-3 It includes: a body 1 serving as the main structure of the water meter sensor, with pipe sections 2 distributed around the body 1 connected to it, combined with an attached... Figure 4-5The pipe section 2 has a hollow area, which provides a place for the sensor flow measurement module 7. An end cap 3 is installed on the top of the pipe section 2. Open the end cap 3 and take out the copper column 6 carrying the flow measurement module 7 from the top of the pipe section 2. Close the end cap 3 to seal the storage space of the flow measurement module 7. The edge of the end cap 3 has pre-set connection holes. It is installed on the body 1 by screws, pins and other parts.

[0037] A copper column 6 for mounting a sensor is installed inside the pipe section 2. A flow measurement module 7, which serves as a sensor component, is installed at the bottom of the copper column 6. In addition to the end that measures the water flow velocity, the flow measurement module 7 also includes components such as a sensor pressure plate and a sensor sealing ring, which together form a component that can measure the water flow and transmit the measured electrical signal outward. The corresponding parts of it should adopt waterproof and pressure-resistant measures, which are within the scope of existing technology. The flow velocity test end faces the water flow. The copper column 6 is provided with several wiring channels 10 that cooperate with the flow measurement module 7.

[0038] The top of the pipe section 2 is made of screw holes and the bottom is made of countersunk holes. The inner diameter of the countersunk holes is smaller than that of the screw holes, and the copper pillars 6 are arranged and filled in the countersunk holes.

[0039] The top of the copper column 6 is connected to a disc with an outwardly expanding edge. A recessed groove with the same outline as the disc is opened at the junction of the screw hole and the countersunk hole. The recessed groove can be regarded as the transition space between the large screw hole and the small countersunk hole. It also adopts a cylindrical hole structure and will not have a conical surface. When the copper column 6 is placed in the pipe section 2, the top surface of the disc and the top edge of the recessed groove remain flush with each other.

[0040] An annular sealing gasket 5 is installed between the bottom of the disc and the sinking groove. The screw hole is connected by a threaded connection and a pressure ring 4 is installed in the pipe section 2 to fix the copper column 6 through the threaded structure locking function. The pressure ring 4 is a stud with a hexagonal through hole inside. Its inner and outer diameters are smaller and larger than the outer diameter of the disc, respectively. From the cross section, the gap between the pressure ring 4, the pipe section 2 and the disc has a T-shaped structure.

[0041] The pressure ring 4 is installed in the pipe section 2 by connecting to the screw hole and pressing down to fix the copper column 6. The disc is placed in the sinking groove to obtain a downward limiting effect and precisely limit the amount of compression of the sealing gasket 5, so that the amount of compression of the sealing gasket 5 is 1 / 3 of its thickness.

[0042] After the pressure ring 4 compresses the copper column 6 until the upper edge of the copper column 6 is flush with the upper edge of the mounting hole step of the pipe section 2, it is limited by the upper edge of the step and can no longer compress the copper column 6. In this way, the compression amount of the sealing gasket 5 can be precisely limited. With reasonable control of the compression amount parameters, it can reliably seal without causing the sealing ring to fail.

[0043] Combined with appendix Figure 6The copper column 6 has semi-circular positioning ears 9 connected to the top two sides. The pipe section 2 is located in the sinking groove and has a positioning groove that cooperates with the supporting ears. The positioning ears 9 are embedded in the positioning groove, so that when the pressure ring 4 contacts the copper column 6 and rotates, it will not cause the copper column 6 to rotate together with the pressure ring 4 in the pipe section 2, thereby causing the flow measurement module 7 to shift.

[0044] Here, the positioning ear 9 is used instead of the positioning pin. In terms of parts manufacturing, the difficulty of grooving and drilling is similar. This change will not increase the production cost. Moreover, the positioning ear 9 and the copper pillar 6 are cast as a whole and undergo turning and milling, eliminating one or more redundant single parts such as the pin. The positioning ear 9 is placed in the positioning groove of the pipe section 2 in a soft embedding manner. Compared with the excessive fit between the positioning pin and the hole of the related connecting parts, which requires tight insertion and strong knocking, disassembly and assembly are more convenient. Most importantly, the installation method of the positioning pin is abandoned, and there is no need to drill holes in the sealing gasket 5. The sealing gasket 5 is intact, and the sealing performance is more reliable.

[0045] The copper column 6 has a process hole 8 at the center of its top, which is a screw hole. The process hole 8 provides a space for a screw to be installed later. The screw also makes it easy to lift and remove the copper column 6 from the pipe section 2. Correspondingly, there is a recessed space at the top of the disc to make way for the pressure ring 4. The process hole 8 is located at the bottom of the recessed space, which causes the screw installed in the process hole 8 to protrude from the top of the copper column 6 and interfere with the tool embedded in the hexagonal channel of the pressure ring 4.

[0046] In the specific implementation of this utility model, each copper column 6 carrying the flow measurement module 7 is installed in its corresponding pipe section 2 with the correct orientation. Before this, the sealing gasket 5 should be arranged in the pipe section 2.

[0047] When the copper pillar 6 is inserted, the positioning ear 9 is inserted into the positioning groove on the inner wall of the pipe section 2, and they fit together. Then, the pressure ring 4 is screwed into the pipe section 2. Using a hexagonal prism tool, it is screwed down and tightened. After reaching the lowest position, the end cap 3 is pressed on and fixed to close the pipe section 2.

[0048] Since the positioning ear 9 is embedded in the inner wall of the pipe section 2, the copper column 6 will not be misaligned under the influence of the pressure ring 4 during the rotation and tightening process.

[0049] If it is necessary to disassemble the flow measurement module 7 at a certain time, such as for replacement, repair, or inspection, follow the above installation steps step by step. When pulling out the copper pillar 6, you can use a screwdriver to tighten a screw in the process hole 8 on the top plate of the copper pillar 6, and then hold the screw by hand or with relevant tools, such as tweezers or pliers, and pull the copper pillar 6 upward.

[0050] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A water meter sensor positioning and sealing structure, comprising a body (1) serving as the main structure of the water meter sensor, wherein pipe sections (2) distributed around the body (1) are connected to the body (1), and copper pillars (6) for supporting sensor mounting are installed within the pipe sections (2), characterized in that: The top of the pipe section (2) is made of screw holes and the bottom is made of countersunk holes. The inner diameter of the countersunk holes is smaller than that of the screw holes, and the copper pillars (6) are arranged in the countersunk holes. The top of the copper column (6) is connected to a disc with an outwardly expanding edge. A recessed groove with the same outline as the disc is opened at the junction of the screw hole and the countersunk hole. The copper column (6) is placed in the pipe section (2), and the top surface of the disc and the top edge of the recessed groove are kept flush with each other. An annular sealing gasket (5) is installed between the bottom of the disc and the sinking groove. The screw hole internal thread connection is provided with a pressure ring (4) that fixes the copper column (6) in the pipe section (2) through the locking function of the thread structure. The copper column (6) has semi-circular positioning ears (9) on both sides of its top, and the pipe section (2) is located in the sinking groove and has a positioning groove that cooperates with the supporting ears. The copper column (6) has a process hole (8) at the center of its top. The process hole (8) is a screw hole, which provides a space for a screw to be installed later. The screw makes it easy to lift and remove the copper column (6) from the pipe section (2).

2. The water meter sensor positioning and sealing structure according to claim 1, characterized in that: An end cap (3) is installed above the pipe section (2).

3. The water meter sensor positioning and sealing structure according to claim 1, characterized in that: The pressure ring (4) is made of a stud with a hexagonal through hole inside. Its inner and outer diameters are smaller and larger than the outer diameter of the disc, respectively. It is installed in the pipe section (2) by threaded connection with the screw hole and pressed down to fix the copper column (6).

4. The water meter sensor positioning and sealing structure according to claim 3, characterized in that: The disc is placed in the sinking groove to obtain a downward limiting effect and precisely limit the amount of compression of the sealing gasket (5), so that the amount of compression of the sealing gasket (5) is 1 / 3 of its thickness.

5. The water meter sensor positioning and sealing structure according to claim 1, characterized in that: The top of the disk is provided with a recessed space to make way for the pressure ring (4), and the process hole (8) is arranged at the bottom of the recessed space.

6. The water meter sensor positioning and sealing structure according to claim 1, characterized in that: The bottom of the copper column (6) is equipped with a flow measurement module (7) which serves as a sensor component.

7. The water meter sensor positioning and sealing structure according to claim 6, characterized in that: The copper pillar (6) is provided with several wiring channels (10) that cooperate with the flow measurement module (7).

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