Metering instrument

Abstract

The utility model relates to the technical field of fluid metering, and discloses a meter, which comprises a shell, a pipe section, a detection sensor and a mainboard assembly, an installation part is arranged in the shell, the pipe section extends along a first direction and penetrates through two ends of the shell along the first direction, the detection sensor is arranged in the shell, and the mainboard assembly is arranged in the shell. The detection sensor is connected to the pipe section in the second direction, the first direction is perpendicular to the second direction, the main board assembly is arranged on the portion of the shell, and the main board assembly is provided with an installation matching portion connected with the installation portion in a matched mode so that the main board assembly can be limited in the circumferential direction of the main board assembly. According to the meter, the pipe section penetrates through the two ends of the shell in the first direction, the detection sensor is connected to the pipe section in the second direction perpendicular to the first direction, installation of the detection sensor in the second direction and installation of the main board assembly are facilitated, internal arrangement of the meter is reasonable and compact, and installation is convenient. The installation space of the detection sensor is large, and cost control is facilitated while the performance of the sensor is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid metering, in particular to a metering instrument. Background Art

[0002] The information provided in this section is only background information related to the present disclosure, and it does not necessarily represent the prior art.

[0003] At present, for household ultrasonic water meters with built-in temperature and pressure sensors on the market, due to the small space of household water meters, the external shape and volume of the temperature and pressure sensors are mostly restricted. Restricting the external shape and volume results in a small internal space, which is not conducive to the arrangement of internal components of the sensor, thus leading to problems such as insufficient sensor performance and increased costs. Summary of the Utility Model

[0004] The purpose of the utility model is to at least solve the problem of restricting the external dimensions of the instrument, which leads to insufficient sensor performance and increased costs. This purpose is achieved through the following technical solutions:

[0005] The utility model provides a metering instrument, comprising:

[0006] A housing, with an installation part provided inside the housing;

[0007] A pipe section extending along a first direction and penetrating through both ends of the housing along the first direction;

[0008] A detection sensor disposed inside the housing, and the detection sensor is connected to the pipe section along a second direction, where the first direction is perpendicular to the second direction;

[0009] A main board assembly disposed inside the housing, and an installation fitting portion cooperating with the installation part is provided on the main board assembly to limit the main board assembly in its circumferential direction.

[0010] In the metering instrument of the utility model, by arranging the pipe section to penetrate through both ends of the housing along the first direction and connecting the detection sensor to the pipe section along the second direction perpendicular to the first direction, it is convenient for the installation of the detection sensor along the second direction. By providing the installation fitting portion on the main board assembly and connecting the installation fitting portion with the installation part, it is convenient for the installation of the main board assembly. Moreover, the internal layout of the instrument is reasonable and compact, providing a relatively large installation space for the detection sensor, ensuring the performance of the sensor while facilitating cost control.

[0011] In addition, the metering instrument according to the utility model may further have the following additional technical features:

[0012] In some embodiments of the present utility model, the housing includes a first housing part and a second housing part that are joined in an opposing manner. One end of the second housing part facing the first housing part is provided with the mounting part along the second direction. The mounting part includes columns that are circumferentially spaced apart. The mounting and mating part includes a plurality of mounting grooves that are circumferentially spaced apart. The plurality of columns are respectively disposed in the mounting grooves in a one-to-one correspondence.

[0013] In some embodiments of the present utility model, a limiting step is provided on the mounting part. The end face of the main board assembly facing the second housing part abuts against the limiting step. The limiting step is used to limit the main board assembly in the second direction.

[0014] In some embodiments of the present utility model, the metering instrument further includes a battery. The battery is disposed in the second housing part along the second direction, and the battery is disposed between the columns and the main board assembly.

[0015] In some embodiments of the present utility model, the detection sensor includes a sensor body and a connecting part. The outer peripheral surface of the connecting part is provided with a first thread. A connecting and mating part is provided on the side wall of the pipe section. The inner peripheral surface of the connecting and mating part is provided with a second thread that is adapted to the first thread. The detection sensor is threadedly connected to the side wall of the pipe section.

[0016] In some embodiments of the present utility model, a sealing member is provided on the sensor body. Along the second direction, the end face of the sensor body and the end face of the connecting and mating part cooperate to squeeze the sealing member to seal the gap between the sensor body and the connecting and mating part.

[0017] In some embodiments of the present utility model, the metering instrument further includes a reflection assembly. The reflection assembly includes a bracket and two reflectors. The bracket extends along the first direction and is disposed in the pipe section. The two reflectors are respectively disposed at both ends of the bracket along the first direction.

[0018] In some embodiments of the present utility model, the bracket has a cavity. One end of the connecting part facing away from the sensor body extends into the cavity.

[0019] In some embodiments of the present utility model, the metering instrument further includes a locking member. At least one first locking hole is provided on the side wall of the pipe section. At least one second locking hole that is adapted to the first locking hole is provided on the side wall of the bracket. The locking member is disposed in the first locking hole and the second locking hole to connect the bracket and the pipe section.

[0020] In some embodiments of the present utility model, at least one limiting member is provided between the outer peripheral surface of the bracket and the inner peripheral surface of the pipe section, and the limiting member is used to limit the bracket in the first direction. Description of the Drawings

[0021] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0022] Figure 1 Schematically shows a schematic structural view of a metering instrument according to an embodiment of the present utility model;

[0023] Figure 2 Schematically shows a partial structural view of the metering instrument according to an embodiment of the present utility model from a first perspective;

[0024] Figure 3 Schematically shows a partial structural view of the metering instrument according to an embodiment of the present utility model from a second perspective;

[0025] Figure 4 is Figure 3 the sectional view taken along A-A in

[0026] Figure 5 Schematically shows a schematic structural view of the reflector of the metering instrument according to an embodiment of the present utility model.

[0027] The reference numerals are as follows:

[0028] 1. Housing; 10. First housing part; 11. Second housing part; 110. Mounting part; 1100. Column; 1101. Limiting step; 111. Mounting and mating part; 1110. Mounting groove;

[0029] 2. Pipe section; 20. Connecting and mating part;

[0030] 3. Detection sensor; 30. Sensor main body; 31. Connecting part;

[0031] 4. Main board assembly; 40. Main board box;

[0032] 5. Battery;

[0033] 6. Sealing member;

[0034] 7. Reflection assembly; 70. Reflector; 701. Second locking hole; 71. Bracket; 710. Cavity;

[0035] 8. Limiting member;

[0036] X, the first direction;

[0037] Y, the second direction. Detailed implementation manners

[0038] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0039] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0040] Although the terms first, second, third, etc. may be used in the text to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms do not imply an order or sequence when used in the text. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0041] For ease of description, spatial relative relationship terms may be used in the text to describe the relationship of one element or feature shown in the figure relative to another element or feature. These relative relationship terms are, for example, "inner", "outer", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" other elements or features will then be oriented as "above" or "over" other elements or features. Thus, the exemplary term "below" can include both upward and downward orientations.

[0042] Currently, for household ultrasonic water meters with built-in temperature and pressure sensors on the market, due to the relatively small space of household water meters, the shape and volume of temperature and pressure sensors are mostly restricted. For example, for micro temperature and pressure sensors, it is difficult to achieve built-in sensors. Restricting the external dimensions of the meter results in a small space, which is not conducive to the arrangement of internal components of the sensor, thus leading to the problem of insufficient sensor performance. In addition, customizing the shape due to restricted external dimensions leads to an increase in cost.

[0043] In view of this, the present embodiment provides a metering device, aiming to connect the detection sensor 3 to the pipe section 2 along the second direction Y perpendicular to the first direction X, so that the installation space of the detection sensor 3 is larger, which can ensure the performance of the sensor and is conducive to cost control, thereby solving the above technical problems.

[0044] Figures 1 to 5 It is a schematic structural diagram of the metering device according to the embodiment of the present utility model. In all the drawings of the present embodiment, the direction substantially parallel to the length direction of the pipe section 2 is referred to as the first direction X, the direction substantially parallel to the height direction of the meter housing is referred to as the second direction Y, and the first direction X is perpendicular to the second direction Y. In addition, the direction indicated by the arrow in the drawing and the direction opposite thereto are considered to be the same direction.

[0045] As Figures 1 to 5As shown, according to an embodiment of the present utility model, a metering device is proposed. In this embodiment, the above-mentioned metering device is an ultrasonic water meter. The metering device includes a housing 1, a pipe section 2, and a detection sensor 3. An installation part 110 is arranged inside the housing. The pipe section 2 extends along the first direction X and penetrates through both ends of the housing 1 along the first direction X. The detection sensor 3 is a temperature and pressure sensor, which includes a temperature detection module and a pressure detection module. Integrating pressure detection and temperature detection in one sensor can reduce the installation space of the sensor. The detection sensor 3 is arranged inside the housing 1, and the detection sensor 3 is connected to the pipe section 2 along the second direction Y. The first direction X is perpendicular to the second direction Y. The main board assembly 4 is arranged inside the housing 1. An installation cooperation part 111 that cooperates with the installation part 110 is arranged on the main board assembly 4. The main board assembly 4 includes a main board box 40. The cross-sectional shape of the main board box 40 is a rounded rectangle. The installation cooperation part 111 is arranged on the outer peripheral surface of the main board box 40. By cooperating the installation part 110 with the installation cooperation part 111, the main board box 40 is limited on the housing 1, which is used to limit the main board box 40 in the circumferential direction. There is no need for screw fixation, the installation is convenient, which is beneficial to production, and ensures the stability and reliability of the installation of the main board box 40.

[0046] In the metering device of the present utility model, by arranging the pipe section 2 to penetrate through both ends of the housing 1 along the first direction X and connecting the detection sensor 3 to the pipe section 2 along the second direction Y perpendicular to the first direction X, it is convenient for the installation of the detection sensor 3 along the second direction Y. By arranging the installation cooperation part 111 on the main board assembly 4 and connecting the installation cooperation part 111 with the installation part 110, it is convenient for the installation of the main board assembly 4. Moreover, the internal layout of the device is reasonable and compact, so that the installation space of the detection sensor 3 is relatively large. While ensuring the performance of the sensor, it is beneficial to cost control.

[0047] In some embodiments of the present utility model, the housing 1 includes a first housing part 10 and a second housing part 11 which are connected in an opposing manner. One end of the second housing part 11 facing the first housing part 10 is provided with a mounting part 110 along the second direction Y. The mounting part 110 includes columns 1100 which are arranged at intervals along the circumferential direction. The mounting and fitting part 111 includes a plurality of mounting grooves 1110 which are arranged at intervals along the circumferential direction. The plurality of columns 1100 are respectively arranged in the mounting grooves 1110 in a one-to-one correspondence. Specifically, the cross-sectional shapes of the first housing part 10 and the second housing part 11 are rounded rectangles. The end face of the first housing part 10 facing the second housing part 11 is provided with a plurality of first threaded holes along the circumferential direction. The end face of the second housing part 11 facing the first housing part 10 is provided with a plurality of second threaded holes along the circumferential direction. The first threaded holes and the second threaded holes are adapted to each other. By screwing bolts into the first threaded holes and the second threaded holes, the first housing part 10 and the second housing part 11 are detachably connected by threads. In this embodiment, the number of the mounting grooves 1110 is four. The four mounting grooves 1110 are respectively arranged at the four corners of the main board box 40. The second housing part 11 includes a lower housing 1 with a cross-sectional shape of a rounded rectangle. The number of the columns 1100 is four. The four columns 1100 are respectively arranged at the four corners of the lower housing 1 and extend along the second direction Y. The four columns 1100 are respectively embedded in the mounting grooves 1110 in a one-to-one correspondence, so as to limit the main board box 40 in the circumferential direction.

[0048] In other embodiments, the numbers of the columns 1100 and the mounting grooves 1110 can also be increased or decreased according to actual needs, and the setting positions of the two can also be changed. This embodiment does not limit this here.

[0049] In some embodiments of the present utility model, a limiting step 1101 is provided on the mounting part 110. The end face of the main board assembly 4 facing the second housing part 11 abuts against the limiting step 1101. The limiting step 1101 is used to limit the main board assembly 4 in the second direction Y. Specifically, a limiting step 1101 is provided inside each column 1100. The main board box 40 is installed between the columns 1100 through the mounting grooves 1110 to limit the main board box 40 in the circumferential direction. Then, the end face of the main board box 40 close to the lower housing 1 abuts against the limiting step 1101 for fixation. Then, the first housing part 10 and the second housing part 11 are assembled to limit the main board box 40 in both the circumferential direction and the axial direction, further ensuring the stability and reliability of the installation of the main board box 40.

[0050] In some embodiments of the present utility model, the metering instrument further includes a battery 5. The battery 5 is arranged in the second housing part 11 along the second direction Y, and the battery is arranged between the columns and the main board assembly. The battery 5 can supply power to the detection sensor 3 and the main board box 40. The battery 5 is installed in the second housing part 11 along the height direction of the housing 1, which is convenient for the installation of the battery 5. The battery is arranged between the columns and the main board assembly, and the internal layout of the instrument is reasonable and compact, making the space utilization more reasonable.

[0051] In some embodiments of the present utility model, the detection sensor 3 includes a sensor main body 30 and a connecting portion 31 which are integrally connected. A first thread is provided on the outer peripheral surface of the connecting portion 31, and a connecting and mating portion 20 is provided on the side wall of the pipe section 2. A second thread adapted to the first thread is provided on the inner peripheral surface of the connecting and mating portion 20, and the detection sensor 3 is threadedly connected to the side wall of the pipe section 2. Specifically, the connecting portion 31 is provided at the bottom end of the sensor main body 30, and the sensor main body 30 and the connecting portion 31 extend along the second direction Y. A connecting and mating portion 20 is provided on the side wall of the pipe section 2, and the connecting and mating portion 20 is a threaded hole. A second thread is provided on the inner peripheral surface of the threaded hole. The first thread and the second thread cooperate to enable the detection sensor 3 to be threadedly connected to the pipe section 2. A limiting end face is provided at one end of the sensor main body 30 facing the connecting and mating portion 20, and a mating end face is provided at one end of the connecting and mating portion 20 facing the sensor main body 30. As the detection sensor 3 is screwed, the limiting end face moves towards the direction close to the mating end face until the limiting end face is in close fit with the mating end face to tighten the detection sensor 3. By means of threaded connection, the detection sensor 3 is vertically installed on the pipe section 2, and an ordinary hexagon wrench can be used without special tooling, which facilitates the disassembly and assembly of the detection sensor 3, improves the disassembly and assembly efficiency, and the tight fit between the limiting end face and the mating end face can improve the sealing performance.

[0052] In some embodiments of the present utility model, a seal 6 is provided on the sensor main body 30. Along the second direction Y, the end face of the sensor main body 30 and the end face of the connecting and mating portion 20 cooperate to squeeze the seal 6 to seal the gap between the sensor main body 30 and the connecting and mating portion 20. Specifically, an annular seal groove is provided on the limiting end face, and the axis of the annular seal groove coincides with the axis of the connecting portion 31. The seal 6 includes a sealing ring. By providing the annular seal groove, the seal 6 can be limited in the annular seal groove, which is convenient for the installation of the seal 6. The width and depth of the annular seal groove are slightly smaller than the width and depth of the seal 6, so that the seal 6 can be installed in the annular seal groove with interference, and the outer periphery of the seal 6 protrudes slightly from the annular seal groove. Thus, when the detection sensor 3 is installed, the limiting end face and the mating end face can be pressed and fitted tightly by squeezing the seal 6 for sealing, which improves the stability and sealing effect of the installation of the detection sensor 3.

[0053] In some embodiments of the present utility model, the metering instrument further includes a reflection assembly 7. The reflection assembly 7 includes a bracket 71 and two reflectors. The bracket 71 extends in the first direction and is disposed within the pipe section 2. The two reflectors are respectively disposed at two ends of the bracket 71 along the first direction. Specifically, the bracket 71 is disposed within the pipe section. The bracket 71 is a hollow cylindrical frame structure. On the one hand, it can be used to provide support. On the other hand, it can play a role in reducing the inner diameter of the pipe section, increasing the water flow velocity within the pipe section, and improving the ultrasonic measurement accuracy. Both ends of the bracket 71 have bracket mounting surfaces. The reflector includes a reflection sheet 70. The number of reflection sheets 70 is two. The two reflection sheets 70 are respectively disposed on the bracket mounting surfaces on both sides of the bracket 71.

[0054] In some embodiments of the present utility model, the bracket 71 has a cavity 710. One end of the connecting portion 31 facing away from the sensor body 30 extends into the cavity 710. One end of the connecting portion 31 facing away from the sensor body 30 is located at the position of the cavity 710 of the bracket 71, avoiding interference between the connecting portion 31 and the bracket 71, which may cause inconvenience in installing the detection sensor 3, and ensuring that the detection sensor 3 is installed in place.

[0055] In some embodiments of the present utility model, the metering instrument further includes a locking member. At least one first locking hole is provided on the side wall of the pipe section 2. At least one second locking hole 701 adapted to the first locking hole is provided on the side wall of the bracket 71. The locking member is disposed in the first locking hole and the second locking hole 701 to connect the bracket 71 and the pipe section 2. In this embodiment, the locking member includes a fastening screw. The number of the first locking hole and the second locking hole 701 is one respectively. The fastening screw is screwed into the first locking hole and the second locking hole 701, thereby installing the bracket 71 within the pipe section 2. By means of threaded connection, it is convenient to disassemble and assemble the bracket 71, improving the disassembly and assembly efficiency, and being able to limit the bracket 71 in the circumferential direction, improving the stability and reliability of the installation of the bracket 71. Furthermore, it limits the reflection sheet 70 in the circumferential direction, ensuring the stability and accuracy of the installation position of the reflection sheet 70 and improving the detection accuracy.

[0056] In some embodiments of the present utility model, at least one limiting member 8 is provided between the outer peripheral surface of the bracket 71 and the inner peripheral surface of the pipe section 2. The limiting member 8 is used to limit the bracket 71 in the first direction X. In this embodiment, the number of the limiting members 8 is two. The limiting member 8 includes a second sealing ring. The two limiting members 8 are disposed on the outer peripheral surface of the bracket 71 at intervals along the axial direction of the bracket 71, capable of limiting the bracket 71 in the axial direction. Furthermore, it limits the reflection sheet 70 in the axial direction, ensuring the stability and accuracy of the installation position of the reflection sheet 70 and improving the detection accuracy. By providing two limiting members 8, the reliability of limiting the bracket 71 can be increased, and the limiting effect can be further improved.

[0057] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A measuring instrument, characterized in that: include: A housing, wherein a mounting portion is disposed inside the housing; a pipe section extending along a first direction and penetrating through two ends of the shell along the first direction; A detection sensor is disposed inside the housing, and the detection sensor is connected to the pipe section along a second direction, and the first direction and the second direction are perpendicular to each other; The mainboard assembly is arranged inside the shell, and the mainboard assembly is provided with a mounting matching portion that is matched and connected with the mounting portion to limit the mainboard assembly in its circumferential direction.

2. The measuring instrument according to claim 1, characterized in that: The shell includes a first shell portion and a second shell portion that are mateably connected, the second shell portion is provided with the mounting portion along the second direction at one end facing the first shell portion, the mounting portion includes columns arranged at intervals along the circumferential direction, the mounting mating portion includes a plurality of mounting grooves arranged at intervals along the circumferential direction, and the plurality of columns are arranged in one-to-one correspondence in the mounting grooves.

3. The measuring instrument according to claim 2, characterized in that: A limiting step is provided on the mounting portion, and the end surface of the mainboard assembly facing the second shell portion abuts against the limiting step, and the limiting step is used to limit the mainboard assembly in the second direction.

4. The measuring instrument according to claim 2, characterized in that: The meter also includes a battery, which is arranged in the second shell along the second direction and between the column and the mainboard assembly.

5. The measuring instrument according to claim 1, characterized in that: The detection sensor includes a sensor body and a connecting part, the outer circumferential surface of the connecting part is provided with a first thread, the side wall of the pipe section is provided with a connecting fitting part, the inner circumferential surface of the connecting fitting part is provided with a second thread adapted to the first thread, and the detection sensor is threadedly connected to the side wall of the pipe section.

6. The measuring instrument according to claim 5, characterized in that: A sealing member is disposed on the sensor body. Along the second direction, the end surface of the sensor body and the end surface of the connecting and fitting portion cooperate with each other to squeeze the sealing member to block the gap between the sensor body and the connecting and fitting portion.

7. The measuring instrument according to claim 5, characterized in that: The measuring instrument also includes a reflection component, which includes a bracket and two reflection members. The bracket extends along the first direction and is arranged in the pipe section. The two reflection members are respectively arranged at two ends of the bracket along the first direction.

8. The measuring instrument according to claim 7, characterized in that: The bracket has a cavity, and one end of the connecting portion away from the sensor body extends into the cavity.

9. The measuring instrument according to claim 8, characterized in that: The measuring instrument also includes a locking piece, at least one first locking hole is provided on the side wall of the pipe section, at least one second locking hole adapted to the first locking hole is provided on the side wall of the bracket, and the locking piece is provided in the first locking hole and the second locking hole to connect the bracket and the pipe section.

10. The measuring instrument according to claim 8, characterized in that: At least one limiting member is provided between the outer circumferential surface of the bracket and the inner circumferential surface of the pipe section, and the limiting member is used to limit the bracket in the first direction.

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