Novel flow measurement sensor measurement structure and method

Abstract

The invention relates to a novel flow measurement sensor measurement structure and method, and belongs to the technical field of acoustics and sensing. According to the technical scheme, the front portion and the rear portion of the flow measurement center sleeve are each of a pincerlike opening structure, each pincerlike opening structure is composed of an arc-shaped left pincerlike body and an arc-shaped right pincerlike body, a pincerlike opening is formed between the arc-shaped left pincerlike body and the arc-shaped right pincerlike body, and horizontally-arranged installation sliding ways are arranged on the inner wall of the arc-shaped left pincerlike body and the inner wall of the arc-shaped right pincerlike body respectively. And the upstream ultrasonic reflector plate and the downstream ultrasonic reflector plate are respectively arranged in the pincerlike opening structures of the front part and the rear part of the flow measurement central sleeve through the mounting slideways. The flow measuring center sleeve has the advantages that the space, occupied by the front pipe cavity and the rear pipe cavity of the flow measuring center sleeve, in the pipe section body is reduced, pressure loss and fluid disturbance are reduced, the flow measuring center sleeve and the reflector are prevented from shaking in the pipe section body, and the flow measuring precision is improved.

Description

Technical Field

[0001] The invention relates to a novel flow sensor measurement structure and method, which is used for measuring a flowing medium, in particular an ultrasonic measurement structure of a liquid or a gas, and belongs 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 adopts a beam fluid and a reflector to measure by reflecting ultrasonic waves. Common structures are: ① Chinese patent CN201920093376.X named "An ultrasonic water metering module structure and an ultrasonic water meter". The fixing method is that the beam fluid is fixed by a hook and a pipe section body, and the reflector is installed in the beam fluid reflection groove, forming a W reflection form as a whole. However, since the reflector in this form is not directly fixed, it is easy to cause inaccurate measurement due to tolerance problems. ② Chinese patent CN202010661469.5 is named "An ultrasonic measurement structure and its assembly method". A flow measurement center sleeve is set in the pipe section. The flow measurement center sleeve is composed of three parts of an integrated structure. The middle part is a flow measurement channel with a smaller inner diameter, and the front and rear parts are cavities with larger inner diameters. The upstream ultrasonic reflector and the downstream ultrasonic reflector are respectively installed in the cavities of the front and rear parts of the flow measurement center sleeve, forming a U-reflection form as a whole. Since the front and rear cavities of the flow measurement center sleeve occupy most of the internal space of the pipe section, it blocks and disturbs the normal flow measurement, affecting the flow measurement accuracy. In addition, the positioning of the flow measurement center sleeve and the reflector in the pipe section is unstable, and it is easy to shake after assembly, affecting the flow measurement accuracy. Summary of the invention

[0003] The purpose of the present invention is to provide a new flow measuring sensor measurement structure and method, which can reduce the space occupied by the front and rear parts of the flow measuring center sleeve internal space of the pipe section, reduce pressure loss and fluid disturbance, avoid shaking of the flow measuring center sleeve and the reflector in the pipe section, improve flow measurement accuracy, and solve the above-mentioned technical problems existing in the background technology.

[0004] The technical solution of the present invention is: A novel flow measuring sensor measurement structure comprises an upstream ultrasonic reflector, a flow measuring center sleeve and a downstream ultrasonic reflector. The front and rear parts of the flow measuring center sleeve are both clamp-shaped opening structures. The clamp-shaped opening structure is composed of an arc-shaped left clamp body and an arc-shaped right clamp body. There is a clamp-shaped opening between the arc-shaped left clamp body and the arc-shaped right clamp body. Horizontally arranged installation slides are respectively provided on the inner walls of the arc-shaped left clamp body and the arc-shaped right clamp body. The upstream ultrasonic reflector and the downstream ultrasonic reflector are respectively installed in the clamp-shaped opening structures of the front and rear parts of the flow measuring center sleeve through the installation slides.

[0005] Furthermore, the upstream ultrasonic reflector and the downstream ultrasonic reflector are integrally stamped and formed structures, including a frame and a reflective lens. After the frame and the reflective lens are stamped and formed, the reflective lens parallel to the frame is bent to a set inclination angle.

[0006] Furthermore, the flow measuring central sleeve is integrally injection molded, and the upstream ultrasonic reflection sheet and the downstream ultrasonic reflection sheet are integrally assembled with the flow measuring central sleeve 2 .

[0007] Furthermore, an upstream installation slide and a downstream installation slide are respectively provided on the front and rear clamp-shaped opening structures of the flow measuring central sleeve, and the upstream ultrasonic reflector and the downstream ultrasonic reflector are respectively installed in the front and rear clamp-shaped opening structures of the flow measuring central sleeve through the upstream installation slide and the downstream installation slide.

[0008] Furthermore, an upstream reflector fixing hole and a downstream reflector fixing hole are respectively provided on the arc-shaped left clamp body and the arc-shaped right clamp body of the front and rear clamp-shaped opening structure of the flow measuring center sleeve, and the upstream reflector fixing hole and the downstream reflector fixing hole are respectively arranged on the upstream mounting slide and the downstream mounting slide; upstream reflector fixing wings and downstream reflector fixing wings are respectively provided on the frames of the upstream ultrasonic reflector and the downstream ultrasonic reflector, and when the upstream ultrasonic reflector and the downstream ultrasonic reflector are respectively installed in place along the upstream mounting slide and the downstream mounting slide, the upstream reflector fixing wings and the downstream reflector fixing wings are respectively stuck in the upstream reflector fixing hole and the downstream reflector fixing hole.

[0009] Furthermore, a reflection plate interference fixing point is provided at the outer end of the upstream ultrasonic reflection plate. After the upstream ultrasonic reflection plate, the flow measuring center sleeve and the downstream ultrasonic reflection plate are integrated into one, they need to be installed into the pipe section body, and the reflection plate interference fixing point is in interference contact with the inner wall of the pipe section body for positioning.

[0010] Furthermore, the middle part of the flow measuring central sleeve is provided with two front and rear O-ring installation grooves, and O-rings are arranged in the O-ring installation grooves. The middle part of the flow measuring central sleeve is positioned and sealed with the pipe section body by the O-rings.

[0011] Furthermore, the flow measuring channel in the middle part of the flow measuring central sleeve is a circular flow measuring cross section, and a reducing structure is provided in the flow measuring channel, which can improve the stability of the flow state.

[0012] Furthermore, the present invention is a U-shaped measuring structure.

[0013] A novel flow measuring sensor measurement structure assembly method, wherein the front and rear parts of a flow measuring center sleeve are both clamp-shaped opening structures, and an upstream ultrasonic reflector and a downstream ultrasonic reflector are respectively installed in the front and rear clamp-shaped opening structures of the flow measuring center sleeve through an upstream mounting slide and a downstream mounting slide; when the upstream ultrasonic reflector and the downstream ultrasonic reflector are respectively installed in place along the upstream mounting slide and the downstream mounting slide, the upstream reflector fixing wings and the downstream reflector fixing wings are respectively stuck in the upstream reflector fixing hole and the downstream reflector fixing hole; after the upstream ultrasonic reflector, the flow measuring center sleeve and the downstream ultrasonic reflector are integrated into one body, they are installed into a pipe section body, and the interference fixing point of the reflector is in interference contact with the inner wall of the pipe section body for positioning; the middle part of the flow measuring center sleeve is positioned and sealed with the pipe section body through two O-rings.

[0014] The present invention changes the front and rear parts of the flow measuring central sleeve into a clamp-shaped opening structure, thereby reducing the space occupied by the front and rear parts of the central flow measuring sleeve in the pipe section, reducing pressure loss and fluid disturbance; the upstream reflector fixing wings and the downstream reflector fixing wings are respectively matched with the upstream reflector fixing holes and the downstream reflector fixing holes, thereby improving the stability and accuracy of the reflector and reducing the difficulty of assembly; the middle part of the central flow measuring sleeve is provided with two O-ring installation grooves, which enhance the sealing performance and greatly improve the measurement accuracy.

[0015] The invention has the beneficial effects of reducing the space occupied by the front and rear cavities of the flow measuring central sleeve inside the pipe section, reducing pressure loss and fluid disturbance, avoiding shaking of the flow measuring central sleeve and the reflector inside the pipe section, and improving flow measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an exploded isometric view of an embodiment of the present invention; Figure 2 is a cross-sectional view of an embodiment of the present invention; Figure 3 is an exploded front view of an embodiment of the present invention; Figure 4 is an axonometric view of an embodiment of the present invention; Figure 5 A side view of an embodiment of the present invention; In the figure: upstream ultrasonic reflector 1, flow measuring center sleeve 2, downstream ultrasonic reflector 3, upstream mounting slide 4, downstream mounting slide 5, upstream reflector fixing hole 6, downstream reflector fixing hole 7, O-ring mounting groove 8, upstream reflector fixing wings 9, downstream reflector fixing wings 10, reflector interference fixing point 11, arc-shaped left clamp body 12, arc-shaped right clamp body 13, clamp-shaped opening 14, frame 15, reflector lens 16. DETAILED DESCRIPTION

[0017] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0018] Refer to the attached Figure 1-5 The present embodiment provides a novel flow measuring sensor measurement structure, comprising an upstream ultrasonic reflector 1, a flow measuring center sleeve 2 and a downstream ultrasonic reflector 3. The front and rear parts of the flow measuring center sleeve 2 are both clamp-shaped opening structures, and the clamp-shaped opening structure is composed of an arc-shaped left clamp body 12 and an arc-shaped right clamp body 13. A clamp-shaped opening 14 is formed between the arc-shaped left clamp body 12 and the arc-shaped right clamp body 13. Horizontally arranged installation slides are respectively provided on the inner walls of the arc-shaped left clamp body 12 and the arc-shaped right clamp body 13. The upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are respectively installed in the clamp-shaped opening structures of the front and rear parts of the flow measuring center sleeve through the installation slides.

[0019] The upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are integrally stamped and formed structures, including a frame 15 and a reflective lens 16. After the frame 15 and the reflective lens 16 are stamped and formed, the reflective lens 16 parallel to the frame is bent to a set tilt angle.

[0020] The flow measuring central sleeve 2 is integrally formed by injection molding, and the upstream ultrasonic reflection sheet 1 and the downstream ultrasonic reflection sheet 3 are assembled into one body with the flow measuring central sleeve 2 .

[0021] An upstream mounting slide 4 and a downstream mounting slide 5 are respectively arranged on the front and rear clamp-shaped opening structures of the flow measuring central sleeve 2, and the upstream ultrasonic reflecting plate 1 and the downstream ultrasonic reflecting plate 3 are respectively installed in the front and rear clamp-shaped opening structures of the flow measuring central sleeve 2 through the upstream mounting slide 4 and the downstream mounting slide 5.

[0022] The arc-shaped left clamp body 12 and the arc-shaped right clamp body 13 of the front and rear clamp-shaped opening structure of the flow measuring center sleeve 2 are respectively provided with an upstream reflector fixing hole 6 and a downstream reflector fixing hole 7, and the upstream reflector fixing hole 6 and the downstream reflector fixing hole 7 are respectively arranged on the upstream mounting slide 4 and the downstream mounting slide 5; the frames of the upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are respectively provided with upstream reflector fixing wings 9 and downstream reflector fixing wings 10, and when the upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are respectively installed in place along the upstream mounting slide 4 and the downstream mounting slide 5, the upstream reflector fixing wings 9 and the downstream reflector fixing wings 10 are just stuck in the upstream reflector fixing hole 6 and the downstream reflector fixing hole 7 respectively.

[0023] The outer end of the upstream ultrasonic reflector 1 is provided with a reflector interference fixing point 11. After the upstream ultrasonic reflector 1, the flow measuring center sleeve 2 and the downstream ultrasonic reflector 3 are integrated into one, they need to be installed into the pipe section body. The reflector interference fixing point 11 is in interference contact with the inner wall of the pipe section body for positioning.

[0024] The middle part of the flow measuring central sleeve 2 is provided with two front and rear O-ring installation grooves 8, and O-rings are arranged in the O-ring installation grooves 8. The middle part of the flow measuring central sleeve 2 is positioned and sealed with the pipe section body through the O-rings.

[0025] The flow measuring channel in the middle part of the flow measuring central sleeve 2 is a circular flow measuring cross section, and a reducing structure A is provided in the flow measuring channel to improve the stability of the flow state.

[0026] The present invention is a U-shaped measuring structure.

[0027] A novel flow measuring sensor measurement structure assembly method, the front and rear parts of the flow measuring center sleeve 2 are both clamp-shaped opening structures, the upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are respectively installed in the front and rear clamp-shaped opening structures of the flow measuring center sleeve 2 through the upstream installation slide 4 and the downstream installation slide 5; when the upstream ultrasonic reflector 1 and the downstream ultrasonic reflector 3 are respectively installed in place along the upstream installation slide 4 and the downstream installation slide 5, the upstream reflector fixing wings 9 and the downstream reflector fixing wings 10 are just stuck in the upstream reflector fixing hole 6 and the downstream reflector fixing hole 7 respectively; after the upstream ultrasonic reflector 1, the flow measuring center sleeve 2 and the downstream ultrasonic reflector 3 are integrated into one body, they are installed into the pipe section body, and the interference fixing point 11 of the reflector is in interference contact with the inner wall of the pipe section body for positioning; the middle part of the flow measuring center sleeve 2 is positioned and sealed with the pipe section body through two O-rings.

[0028] The present invention changes the front and rear parts of the flow measuring central sleeve 2 into a clamp-shaped opening structure, thereby reducing the space occupied by the front and rear parts of the central flow measuring sleeve in the pipe section, reducing pressure loss and fluid disturbance; the upstream reflector fixing wings 9 and the downstream reflector fixing wings 10 are respectively matched with the upstream reflector fixing holes 6 and the downstream reflector fixing holes 7 to improve the stability and accuracy of the reflector and reduce the difficulty of assembly; the middle part of the central flow measuring sleeve 2 is provided with two O-ring installation grooves 8 to enhance the sealing performance and greatly improve the measurement accuracy.

Claims

1. A new type of flow sensor measurement structure, characterized in that: The invention comprises an upstream ultrasonic reflector (1), a flow measuring central sleeve (2) and a downstream ultrasonic reflector (3); the front and rear parts of the flow measuring central sleeve (2) are both clamp-shaped opening structures; the clamp-shaped opening structure is composed of an arc-shaped left clamp body (12) and an arc-shaped right clamp body (13); a clamp-shaped opening (14) is formed between the arc-shaped left clamp body (12) and the arc-shaped right clamp body (13); horizontally arranged mounting slideways are respectively provided on the inner walls of the arc-shaped left clamp body (12) and the arc-shaped right clamp body (13); the upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3) are respectively installed in the clamp-shaped opening structures of the front and rear parts of the flow measuring central sleeve (2) through the mounting slideways.

2. A novel flow sensor measuring structure according to claim 1, characterized in that: The upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3) are integrally stamped structures, comprising a frame (15) and a reflector lens (16); after the frame (15) and the reflector lens (16) are stamped, the reflector lens (16) parallel to the frame is bent to a set inclination angle.

3. A novel flow sensor measuring structure according to claim 1 or 2, characterized in that: The flow measuring central sleeve (2) is integrally injection-molded, and the upstream ultrasonic reflection sheet (1) and the downstream ultrasonic reflection sheet (3) are assembled into one piece with the flow measuring central sleeve (2).

4. A novel flow sensor measuring structure according to claim 3, characterized in that: An upstream reflector fixing hole (6) and a downstream reflector fixing hole (7) are respectively provided on the arc-shaped left clamp body (12) and the arc-shaped right clamp body (13) of the front and rear clamp-shaped opening structure of the flow measuring center sleeve (2), and the upstream reflector fixing hole (6) and the downstream reflector fixing hole (7) are respectively arranged on the upstream mounting slideway (4) and the downstream mounting slideway (5); upstream reflector fixing wings (9) and downstream reflector fixing wings (10) are respectively provided on the frames of the upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3), and when the upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3) are respectively installed in place along the upstream mounting slideway (4) and the downstream mounting slideway (5), the upstream reflector fixing wings (9) and the downstream reflector fixing wings (10) are respectively stuck in the upstream reflector fixing hole (6) and the downstream reflector fixing hole (7).

5. The novel flow sensor measuring structure according to claim 3 is characterized in that: The outer end of the upstream ultrasonic reflector (1) is provided with a reflector interference fixing point (11). After the upstream ultrasonic reflector (1), the flow measuring center sleeve (2) and the downstream ultrasonic reflector (3) are integrated into one body, they need to be installed into the pipe section body, and the reflector interference fixing point (11) is in interference contact with the inner wall of the pipe section body for positioning.

6. The novel flow sensor measuring structure according to claim 3 is characterized in that: The middle portion of the flow measuring central sleeve (2) is provided with two front and rear O-ring installation grooves (8), and O-rings are arranged in the O-ring installation grooves (8). The middle portion of the flow measuring central sleeve (2) is positioned and sealed with the pipe section body by the O-rings.

7. The novel flow sensor measuring structure according to claim 3 is characterized in that: The flow measuring channel in the middle part of the flow measuring central sleeve (2) is a circular flow measuring cross section, and a reducing structure is provided in the flow measuring channel.

8. An assembly method of a novel flow sensor measuring structure according to any one of claims 1 to 7, wherein the front and rear parts of the flow measuring center sleeve (2) are both clamp-shaped opening structures, and the upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3) are installed in the front and rear clamp-shaped opening structures of the flow measuring center sleeve (2) through the upstream installation slideway (4) and the downstream installation slideway (5) respectively; when the upstream ultrasonic reflector (1) and the downstream ultrasonic reflector (3) are installed in place along the upstream installation slideway (4) and the downstream installation slideway (5), the upstream reflector fixing wings (9) and the downstream reflector fixing wings (10) are respectively stuck in the upstream reflector fixing hole (6) and the downstream reflector fixing hole (7); after the upstream ultrasonic reflector (1), the flow measuring center sleeve (2) and the downstream ultrasonic reflector (3) are integrated, they are installed into the pipe section body, and the interference fixing point (11) of the reflector is in interference contact with the inner wall of the pipe section body for positioning; the middle part of the flow measuring center sleeve (2) is positioned and sealed with the pipe section body through two O-rings.

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