An ultrasonic measurement structure and an assembly method thereof

Abstract

The present invention relates to an ultrasonic measurement structure and an assembly method thereof, and belongs to the field of acoustics and sensor technology. The technical solution is: it comprises at least one shell, a measuring section and at least one reflector and a base, the shell and the measuring section are both cylindrical and combined with each other; the base is located in the shell, and the base and the shell are integrally formed; a reflector is fixed on one side of the base, and a rectifying structure can be fixed on the other side, and one side of the rectifying structure is a streamlined rectifying structure, and the effective gain brought about can reduce pressure loss and optimize the flow state of the flow measuring section. The beneficial effects of the present invention: a reflector is directly embedded on the shell, which ensures the dimensional accuracy required by ultrasonic waves; a rectifying structure is provided on the back of the reflector, which reduces pressure loss and optimizes the fluid distribution state of the flow measuring section; the integral molding simplifies the assembly parts, and the assembly difficulty is simplified and the assembly efficiency is improved through the plug-in combination of the shell.

Description

Technical Field

[0001] The invention relates to an ultrasonic measuring structure and an assembling method thereof, which are used for measuring flowing media, in particular liquid or gas, and belong to the field of acoustics and sensor technology. Background Art

[0002] At present, the existing ultrasonic flow sensor structure, especially the small-caliber ultrasonic flow sensor, usually uses the reflector to reflect the ultrasonic wave for measurement. The common implementation methods are: 1. The insert reflector structure is directly stamped and formed, generally fixed by inserts or directly fixed by the reflector itself and the pipe section body, such as the patent applied by our company: "Ultrasonic flow and calorimeter converter with beam function for measuring pipe section", Chinese patent number ZL201020275319.2; 2. The reflector is fixed by two halves cut in the longitudinal direction, such as Chinese patent number 200810176267.0; 3. The reflector is columnar, and is fixed by the cylindrical column of the columnar reflector and the matching circular hole on the pipe section body. The above ultrasonic flow sensor structure has the disadvantages of high assembly precision, special assembly tooling, many flow sensor components, and complex structure. Summary of the invention

[0003] The object of the present invention is to provide an ultrasonic measuring structure and an assembling method thereof, which are assembled after being integrally formed, have a simple structure, are convenient to assemble, have reliable positioning, and have fewer components, thereby solving the problems existing in the background technology.

[0004] The technical solution of the present invention is:

[0005] An ultrasonic measuring structure comprises at least one shell, a measuring section, at least one reflector and a base. The shell and the measuring section are both cylindrical and combined with each other. The base is located inside the shell, and the base and the shell are integrally formed.

[0006] The base is located on the shell, a reflector is fixed on one side of the base, and a rectifying structure is arranged on the other side; the rectifying structure is a streamlined rectifying structure, which is integrally formed with the base and the shell, and the effective gain brought about can reduce pressure loss and optimize the flow state of the flow measuring section.

[0007] The measuring section is a narrowed portion located in the middle, and the inner diameter of the measuring section is smaller than the inner diameter of the shell; the measuring section is a separate component, and is combined with the shell to form an ultrasonic measurement structure; or the measuring section is an integral structure with one of the shells, and then combined with other shells to form an ultrasonic measurement structure.

[0008] The reflector is made of the same material as the shell, base and rectifying structure, and is integrally formed with the shell, base and rectifying structure; or the reflector is made of a different material from the shell, base and rectifying structure, and after the shell, base and rectifying structure are integrally formed, the reflector is fixed by injection molding or bonding.

[0009] There are two shells, namely, shell one and shell two; a reflector and a base are arranged inside shell one, and a rectifying structure may also be arranged therein; a sensor mounting hole is arranged on shell one.

[0010] When the second shell and the first shell are different components, a second reflector and a second base are arranged in the second shell, a second sensor mounting hole is arranged on the second shell, and a rectifying structure may be arranged on the second shell.

[0011] Shell 1 and shell 2 are respectively located on both sides of the measuring section (reduced part). Shell 1 is located upstream of the measuring section and is the water inlet part, and the rectifying structure 1 faces the water inlet direction; shell 2 is located downstream of the measuring section and is the water outlet part; shell 1, shell 2 and the measuring section are combined together and placed in the measuring pipe section.

[0012] The measuring section is a reduced portion located in the middle, and the inner diameter of the measuring section is smaller than the inner diameter of the shell; the measuring section (reduced portion) can be a separate component combined with the shell to form an ultrasonic measuring structure, or the measuring section can be an integral structure with one of the shells, and then combined with other shells to form an ultrasonic measuring structure. The combination method includes: snap-fit, bonding or plug-in.

[0013] The base is arranged in the shell, a reflector is installed on one side, and a rectifying structure can be arranged on the other side. The three can be integrally formed as a whole, or can be fixed together by bonding or clamping.

[0014] The reflector can be made of the same material as the shell and the rectifying structure, and can be integrally formed with the shell and the rectifying structure; the reflector can also be made of a material different from the shell and the rectifying structure, and after the shell and the rectifying structure are integrally formed, the reflector is fixed by injection molding, embedding, bonding, or the like.

[0015] The shell is provided with a sensor installation hole, and the sensor installed on the shell through the sensor installation hole is positioned in the measuring pipeline.

[0016] The one-piece molding is injection molding.

[0017] The present invention includes at least two embodiments:

[0018] A. Shell 1 and base 1 inside are integrally formed as component 1; Shell 2 has base 2 inside and is an integral whole with the measuring section, and is integrally formed as component 2; Component 1 and component 2 are combined together to form an ultrasonic measuring structure, and the combination methods include snap-on, plug-in or bonding, etc.

[0019] B. Shell 1 and base 1 inside are integrally formed as component 1; the measuring section is integrally formed separately as component 2; shell 2 and base 2 inside are integrally formed as component 3; component 1, component 2 and component 3 are combined together to form an ultrasonic measurement structure, and the combination methods include snap-on, plug-in or bonding, etc.

[0020] A base in the shell is provided with a reflector on one side and a rectifying structure on the other side. The reflector can be an injection-molded insert with the base or can be fixed by other means such as bonding.

[0021] A reflector 2 is provided on one side of the base 2 in the shell 2, and a rectifying structure 2 is provided on the other side. The reflector 2 can be injection-molded with the base 2, or can be fixed by other means such as bonding.

[0022] In case of method B, component one and component three can be the same part.

[0023] The assembly method of the present invention comprises at least the following two methods:

[0024] An assembling method of an ultrasonic measuring structure comprises the following steps:

[0025] Shell 1 and base 1 inside are integrally formed as component 1, and reflector 1 and rectifying structure 1 are arranged inside component 1; base 2 is arranged inside shell 2 and is integrally formed with measuring section, and is integrally formed as component 2, and reflector 2 is arranged inside component 2;

[0026] The end of the measuring section of component 2 and the end of the shell of component 1 are provided with mutually matching buckles, and component 1 and component 2 are combined together through the buckles. Shell 1 is located upstream of the measuring section, and shell 2 is located downstream of the measuring section. Reflector 1 and reflector 2 are arranged correspondingly to each other to form an ultrasonic measurement structure.

[0027] The ultrasonic measurement structure is placed in the measuring pipe section, and sensor one and sensor two are respectively inserted into sensor mounting hole one and sensor mounting hole two, and sensor one and sensor two are matched with reflector one and reflector two respectively. At the same time, sensor one and sensor two are positioned and fixed to shell one and shell two in the measuring pipe section, and the ultrasonic measurement structure is positioned in the measuring pipe section.

[0028] An assembling method of an ultrasonic measuring structure comprises the following steps:

[0029] Shell 1 and base 1 inside are formed as a whole, which is component 1, and reflector 1 and rectifying structure 1 are arranged inside component 1; the measuring section is formed as a whole separately, which is component 2; base 2 is formed as a whole inside shell 2, which is component 3, and reflector 2 is arranged inside component 3;

[0030] Both ends of the measuring section of component 2 are provided with buckles, which match with the buckles at the end of the shell 1 of component 1 and the end of the shell 2 of component 3 respectively. Component 1, component 2 and component 3 are combined together through the buckles, shell 1 is located upstream of the measuring section, shell 2 is located downstream of the measuring section, and reflector 1 and reflector 2 are arranged corresponding to each other to form an ultrasonic measurement structure;

[0031] The ultrasonic measurement structure is placed in the measuring pipe section, and sensor one and sensor two are respectively inserted into sensor mounting hole one and sensor mounting hole two, and sensor one and sensor two are matched with reflector one and reflector two respectively. At the same time, sensor one and sensor two are positioned and fixed to shell one and shell two in the measuring pipe section, and the ultrasonic measurement structure is positioned in the measuring pipe section.

[0032] Beneficial effects of the present invention:

[0033] 1. A reflector is embedded directly on the shell to ensure the dimensional accuracy required by ultrasonic waves;

[0034] 2. A rectifying structure is provided on the back of the reflector to reduce the pressure loss and optimize the fluid distribution state in the flow measuring section;

[0035] 3. One-piece molding simplifies the assembly parts, and through shell plug-in combination, it simplifies the assembly difficulty and improves the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of Embodiment 1 of the present invention;

[0037] Figure 2 is a schematic cross-sectional structural diagram of Embodiment 1 of the present invention;

[0038] Figure 3 It is a structural schematic diagram of Embodiment 2 of the present invention;

[0039] Figure 4 is a schematic cross-sectional structural diagram of Embodiment 2 of the present invention;

[0040] In the figure: shell 1, shell 2, rectifier structure 1, reflector 1, measuring section (reduced part), sensor mounting hole 1, sensor mounting hole 2, reflector 2, base 1, 9, rectifier structure 2, and base 2, 11. DETAILED DESCRIPTION

[0041] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0042] An ultrasonic measuring structure comprises at least one shell, a measuring section, at least one reflector and a base. The shell and the measuring section are both cylindrical and combined with each other. The base is located inside the shell, and the base and the shell are integrally formed.

[0043] The base is located on the shell, a reflector is fixed on one side of the base, and a rectifying structure is arranged on the other side; the rectifying structure is a streamlined rectifying structure, which is integrally formed with the base and the shell, and the effective gain brought about can reduce pressure loss and optimize the flow state of the flow measuring section.

[0044] The measuring section is a narrowed portion located in the middle, and the inner diameter of the measuring section is smaller than the inner diameter of the shell; the measuring section is a separate component, and is combined with the shell to form an ultrasonic measurement structure; or the measuring section is an integral structure with one of the shells, and then combined with other shells to form an ultrasonic measurement structure.

[0045] The reflector is made of the same material as the shell, base and rectifying structure, and is integrally formed with the shell, base and rectifying structure; or the reflector is made of a different material from the shell, base and rectifying structure, and after the shell, base and rectifying structure are integrally formed, the reflector is fixed by injection molding or bonding.

[0046] The shell is provided with a sensor installation hole, and the sensor installed on the shell through the sensor installation hole is positioned in the measuring pipeline.

[0047] There are two shells, namely, shell 1 and shell 2 2 ; a reflector 4 and a base 9 are arranged in shell 1 , and a rectifying structure 3 may also be arranged therein; a sensor mounting hole 6 is arranged on shell 1 .

[0048] When the second shell 2 and the first shell 1 are different components, the second shell 2 is provided with a second reflector 8 and a second base 11, the second shell 2 is provided with a second sensor mounting hole 7, and the second shell 2 may be provided with a rectifying structure.

[0049] Shell 1 and shell 2 2 are respectively located on both sides of the measuring section (reduced part) 5. Shell 1 is located upstream of the measuring section 5 and is the water inlet part, and the rectifying structure 3 faces the water inlet direction; shell 2 2 is located downstream of the measuring section 5 and is the water outlet part; shell 1 1, shell 2 2 and the measuring section 5 are combined together and placed in the measuring pipe section.

[0050] The measuring section is a reduced portion located in the middle, and the inner diameter of the measuring section is smaller than the inner diameter of the shell; the measuring section (reduced portion) can be a separate component combined with the shell to form an ultrasonic measuring structure, or the measuring section can be an integral structure with one of the shells, and then combined with other shells to form an ultrasonic measuring structure. The combination method includes: snap-fit, bonding or plug-in.

[0051] The base is arranged in the shell, a reflector is installed on one side, and a rectifying structure can be arranged on the other side. The three can be integrally formed as a whole, or can be fixed together by bonding or clamping.

[0052] The reflector can be made of the same material as the shell and the rectifying structure, and can be integrally formed with the shell and the rectifying structure; the reflector can also be made of a material different from the shell and the rectifying structure, and after the shell and the rectifying structure are integrally formed, the reflector is fixed by injection molding, embedding, bonding, or the like.

[0053] The one-piece molding is injection molding.

[0054] The present invention includes at least two embodiments:

[0055] A. Shell 1 and base 9 inside are integrally formed as component 1; shell 2 2 has base 2 11 inside and is a whole with measuring section 5, integrally formed as component 2; component 1 and component 2 are combined together to form an ultrasonic measuring structure, and the combination methods include snap-on, plug-in or bonding, etc.

[0056] B. The shell 1 and the internal base 9 are integrally formed as component 1; the measuring section 5 is integrally formed separately as component 2; the shell 2 and the internal base 2 11 are integrally formed as component 3; component 1, component 2 and component 3 are combined together to form an ultrasonic measurement structure, and the combination methods include snap-on, plug-in or bonding, etc.

[0057] A reflector 4 is provided on one side of a base 9 in the housing 1, and a rectifying structure 3 is provided on the other side. The reflector 4 can be an injection-molded insert with the base 9, or can be fixed by other means such as bonding.

[0058] A reflector 2 8 is provided on one side of the base 2 11 in the shell 2 and a rectifying structure 2 10 is provided on the other side. The reflector 2 8 can be injection-molded with the base 2 11 or fixed by other means such as bonding.

[0059] In case of method B, component one and component three can be the same part.

[0060] The assembly method of the present invention comprises at least the following two methods:

[0061] An assembling method of an ultrasonic measuring structure comprises the following steps:

[0062] The housing 1 is integrally formed with the base 9 inside, which is the component 1, and the reflector 4 and the rectifying structure 3 are arranged inside the component 1; the housing 2 has a base 11 inside and is integrally formed with the measuring section 5, which is the component 2, and the reflector 8 is arranged inside the component 2;

[0063] The end of the measuring section 5 of component 2 and the end of the shell of component 1 are provided with mutually matching buckles, and component 1 and component 2 are combined together through the buckles. Shell 1 1 is located upstream of the measuring section 5, and shell 2 2 is located downstream of the measuring section 5. Reflector 1 4 and reflector 2 8 are arranged correspondingly to each other, forming an ultrasonic measurement structure;

[0064] The ultrasonic measurement structure is placed in the measuring pipe section, and sensor one and sensor two are respectively inserted into sensor mounting hole one 6 and sensor mounting hole two 7. Sensor one and sensor two are matched with reflector one 4 and reflector two 8 respectively. At the same time, sensor one and sensor two are positioned and fixed to shell one 1 and shell two 2 in the measuring pipe section, and the ultrasonic measurement structure is positioned in the measuring pipe section.

[0065] An assembling method of an ultrasonic measuring structure comprises the following steps:

[0066] The housing 1 and the base 9 inside are integrally formed, which is component 1, and a reflector 4 and a rectifying structure 3 are arranged in the component 1; the measuring section 5 is integrally formed separately, which is component 2; the housing 2 has a base 11 inside and is integrally formed, which is component 3, and a reflector 8 is arranged in the component 3;

[0067] Both ends of the measuring section 5 of component 2 are provided with buckles, which match with the buckles of the shell one end of component 1 and the shell two end of component 3 respectively. Component 1, component 2 and component 3 are combined together through the buckles, shell 1 1 is located upstream of the measuring section 5, shell 2 2 is located downstream of the measuring section 5, and reflector 1 4 and reflector 2 8 are arranged corresponding to each other to form an ultrasonic measurement structure;

[0068] The ultrasonic measurement structure is placed in the measuring pipe section, and sensor one and sensor two are respectively inserted into sensor mounting hole one 6 and sensor mounting hole two 7. Sensor one and sensor two are matched with reflector one 4 and reflector two 8 respectively. At the same time, sensor one and sensor two are positioned and fixed to shell one 1 and shell two 2 in the measuring pipe section, and the ultrasonic measurement structure is positioned in the measuring pipe section.

Claims

1. A method for assembling an ultrasonic measuring structure, characterized in that The following steps are included: The invention comprises at least one shell, a measuring section, at least one reflector and a base, wherein the shell and the measuring section are both cylindrical and are combined with each other; the base is located in the shell, and the base and the shell are integrally formed; the base is located on the shell, a reflector is fixed on one side of the base, and a rectifying structure is arranged on the other side; the rectifying structure is a streamlined rectifying structure, and is integrally formed with the base and the shell; There are two shells, namely, shell one (1) and shell two (2); shell one (1) is integrally formed with base one (9) inside, forming component one, and reflector one (4) and rectifying structure one (3) are arranged inside component one; shell two (2) has base two (11) inside and is integrally formed with measuring section (5), forming component two, and reflector two (8) is arranged inside component two; The end of the measuring section (5) of component two and the end of the shell of component one are provided with mutually matching buckles, and component one and component two are assembled together by the buckles. Shell one (1) is located upstream of the measuring section (5), and shell two (2) is located downstream of the measuring section (5). Reflector one (4) and reflector two (8) are arranged corresponding to each other, forming an ultrasonic measurement structure. The ultrasonic measuring structure is placed in the measuring pipe section, and the sensor one and the sensor two are respectively inserted into the sensor mounting hole one (6) and the sensor mounting hole two (7). The sensor one and the sensor two are matched with the reflector one (4) and the reflector two (8) respectively. At the same time, the sensor one and the sensor two are positioned and fixed to the shell one (1) and the shell two (2) in the measuring pipe section, and the ultrasonic measuring structure is positioned in the measuring pipe section.

2. The method for assembling an ultrasonic measurement structure according to claim 1, characterized in that: The measuring section is a narrowed portion located in the middle, and the inner diameter of the measuring section is smaller than the inner diameter of the shell; the measuring section is a separate component, and is combined with the shell to form an ultrasonic measurement structure; or the measuring section is an integral structure with one of the shells, and then combined with other shells to form an ultrasonic measurement structure.

3. The method for assembling an ultrasonic measuring structure according to claim 2, characterized in that: The reflector is made of the same material as the housing, the base and the rectifying structure, and is integrally formed with the housing, the base and the rectifying structure; Alternatively, the reflector is made of a material different from that of the shell, the base and the rectifying structure. After the shell, the base and the rectifying structure are integrally formed, the reflector is fixed by injection molding or bonding.

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