An ultrasonic water meter valve body

Abstract

This utility model provides an ultrasonic water meter valve body, belonging to the field of ultrasonic measurement technology. The valve body includes an outer tube and a flow guiding assembly. The outer tube has two transducer mounting holes, and the inner wall of the outer tube is provided with a first stop and a first limiting part. The flow guiding assembly includes a flow guiding pipe, a flow guiding sleeve, and two reflectors. The two reflectors are integrally injection molded with the flow guiding sleeve. The flow guiding sleeve has a mounting groove located between the two reflectors, and the flow guiding pipe is installed in the mounting groove. The outer peripheral wall of the flow guiding assembly is also provided with a second stop and a second limiting part. The flow guiding assembly is inserted into the outer tube along a first direction. The first stop and the second stop engage in a stop engagement in the first direction, and the first limiting part and the second limiting part engage in a limiting engagement in the circumferential direction of the outer tube. The reflectors and the transducer mounting holes correspond one-to-one, and the first direction is parallel to the axial direction of the outer tube. The valve body provided by this utility model has a simple assembly method, high assembly accuracy, and low cost.

Description

Technical Field

[0001] This utility model belongs to the field of ultrasonic measurement technology, and specifically relates to an ultrasonic water meter valve body. Background Technology

[0002] Ultrasonic water meters primarily rely on emitting and receiving ultrasonic signals to measure the flow rate within a pipe. The propagation of the ultrasonic signal depends on a reflector panel installed inside the pipe. Furthermore, to achieve more accurate flow rate measurement, a flow guide tube or a flow guide cavity needs to be installed inside the pipe to adjust the fluid state. Currently, reflector panels on the market are available using methods such as metal riveting, beveled mirror cylindrical pin riveting, and multiple plastic clamping and fixing.

[0003] Among these issues, metal riveting has drawbacks such as large errors, difficulty in orientation, and easy deformation. Metal plates require stamping and bending during manufacturing, and because the bent metal plates will spring back, the bending angle is difficult to control. After riveting, the deformation of the metal plate will cause the mirror to be out of place, resulting in deviations in the relative positions of the guide tube and sensor, leading to unqualified finished products. On the other hand, the slanted mirror cylindrical pin riveting requires machining a slanted surface on the cylinder and polishing it to a mirror finish, which is costly. It is also installed separately from the guide tube, resulting in poor assembly accuracy. Clamping multiple plastic parts results in a small pipe diameter and high fluid resistance due to the large number of accessories, leading to a small flow rate in the ultrasonic water meter. For the same flow rate, a higher water pressure is required. Utility Model Content

[0004] The purpose of this application is to provide an ultrasonic water meter valve body to solve the aforementioned technical problems existing in the prior art.

[0005] This application is implemented as follows: This application provides an ultrasonic water meter valve body, including an outer tube and a flow guiding assembly. The outer tube has two transducer mounting holes, and the inner wall of the outer tube is provided with a first stop and a first limiting part. The flow guiding assembly includes a flow guiding pipe, a flow guiding sleeve, and two reflectors. The two reflectors are integrally injection molded with the flow guiding sleeve. The flow guiding sleeve has a mounting groove located between the two reflectors. The flow guiding pipe is installed in the mounting groove. The outer peripheral wall of the flow guiding assembly is also provided with a second stop and a second limiting part. The flow guiding assembly is inserted into the outer tube along a first direction. The first stop and the second stop cooperate in a stop-fitting manner in the first direction. The first limiting part and the second limiting part are in a limiting-fitting manner in the circumferential direction of the outer tube. The reflectors and the transducer mounting holes correspond one-to-one. The first direction is parallel to the axial direction of the outer tube.

[0006] The technical solution provided in this application can achieve the following beneficial effects: In this application, the flow guiding component is assembled into the outer tube as a whole, and the position of the flow guiding component in the outer tube is fixed by the cooperation of the first stop and the second stop, and the cooperation of the first limiting part and the second limiting part. The assembly method of the flow guiding component and the outer tube is simple and has high assembly consistency, which can improve the assembly accuracy and assembly convenience. At the same time, in the flow guiding component, the flow guiding pipe is installed on the flow guiding sleeve, and the reflector and the flow guiding sleeve are integrally formed. The reflector installation structure is stable and not easily deformed. At the same time, the cost is greatly reduced compared with the inclined mirror cylindrical pin riveting method. The installation of the reflector will not affect the diameter of the flow guiding pipe, and will not affect the normal use and measurement of the ultrasonic water meter. Attached Figure Description

[0007] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a schematic diagram of the overall structure of the valve body provided in some embodiments of this application; Figure 2 This is a split schematic diagram of the valve body provided in some embodiments of this application; Figure 3 This is a breakdown diagram of the flow guiding components provided in some embodiments of this application. Figure 1 ; Figure 4 This is a breakdown diagram of the flow guiding components provided in some embodiments of this application. Figure 2 ; Figure 5 This is a cross-sectional view of the valve body provided in some embodiments of this application. Figure 1 ; Figure 6 This is a cross-sectional view of the valve body provided in some embodiments of this application. Figure 2 ; Figure 7 These are cross-sectional views of the outer tube provided in some embodiments of this application; Figure 8 This application is about Figure 7 Detailed view of point A.

[0009] In the diagram: 100-outer tube, 110-transducer mounting hole, 120-first stop, 130-first limiting part, 200-flow guide assembly, 210-flow guide tube, 211-positioning block, 212-limiting protrusion, 213-second snap-fit ​​block, 220-flow guide sleeve, 221-mounting groove, 222-positioning groove, 223-limiting groove, 230-reflector plate, 240-second stop, 241-first snap-fit ​​block, 242-support block, 250-second limiting part. Detailed Implementation

[0010] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0012] This application provides an ultrasonic water meter valve body, which can be referenced. Figure 1 and Figure 2 As shown, the valve body includes an outer tube 100 and a flow guiding assembly 200. The outer tube 100 has two transducer mounting holes 110. The transducers are mounted in the transducer mounting holes 110. The ultrasonic water meter transmits and receives signals through the two ultrasonic transducers, measures the time difference of ultrasonic waves propagating downstream and upstream in the water flow, and thus calculates the water flow velocity and obtains the flow rate.

[0013] The inner wall of the outer tube 100 is provided with a first stop portion 120 and a first limiting portion 130. The flow guiding assembly 200 includes a flow guiding pipe 210, a flow guiding sleeve 220, and two reflectors 230. The two reflectors 230 are integrally injection molded with the flow guiding sleeve 220, and the flow guiding sleeve 220 has a mounting groove 221 located between the two reflectors 230, in which the flow guiding pipe 210 is mounted. The outer peripheral wall of the flow guiding assembly 200 is also provided with a second stop portion 240 and a second limiting portion 250.

[0014] The flow guiding assembly 200 consists of a flow guiding pipe 210, a flow guiding sleeve 220, and a reflector 230. After the three are assembled, the flow guiding assembly 200 is inserted into the outer tube 100 along a first direction to complete the assembly of the flow guiding assembly 200. The first direction is parallel to the axial direction of the outer tube 100. During the process of inserting the flow guiding assembly 200 into the outer tube 100 along the first direction, the first stop part 120 and the second stop part 240 stop in the first direction to prevent the flow guiding assembly 200 from continuing to move within the outer tube 100. The first limiting part 130 and the second limiting part 250 limit in the circumferential direction of the outer tube 100 to prevent the flow guiding assembly 200 from rotating within the outer tube 100. The reflector 230 and the transducer mounting hole 110 are set in a one-to-one correspondence.

[0015] In this embodiment, the flow guiding component 200 is directly assembled into the outer tube 100, and the position of the flow guiding component 200 within the outer tube 100 is restricted by the stop cooperation of the first stop portion 120 and the second stop portion 240, and the limiting cooperation of the first limiting portion 130 and the second limiting portion 250. When the ultrasonic water meter is in use, the water flows in a first direction. Under the action of the water flow, the flow guiding component 200 is fixed entirely within the outer tube 100, facilitating the use of the ultrasonic water meter. The first direction can be referenced... Figure 2 , Figure 5 and Figure 6 The direction is indicated by the dashed arrow shown. Furthermore, the flow guiding component 200 is directly assembled into the outer tube 100, which simplifies the assembly process, ensures high consistency, improves assembly accuracy and ease of assembly, and reduces assembly errors.

[0016] In the flow guiding assembly 200, the reflector 230 and the flow guiding sleeve 220 are directly injection molded as a single piece. The reflector 230 has high installation stability. During subsequent use, the connection structure between the reflector 230 and the flow guiding sleeve 220 is stable and not prone to deformation. Compared with the existing inclined mirror cylindrical pin riveting method, the cost is greatly reduced. At the same time, it does not require the use of multiple plastic parts for clamping, and will not affect the diameter of the flow guiding pipe 210 or the normal measurement of the ultrasonic water meter.

[0017] The outer peripheral wall of the flow guiding component 200 refers to the side wall located on the outer periphery of the flow guiding component 200. It can be the outer wall of the flow guiding pipe 210 located on the outer side, or the outer wall of the flow guiding sleeve 220 located on the outer side. That is, the second stop part 240 and the second limiting part 250 can be provided on the flow guiding pipe 210, or on the flow guiding sleeve 220, or on both the flow guiding pipe 210 and the flow guiding sleeve 220.

[0018] In some specific embodiments, the first stop 120 may be located on the insertion path of the second stop 240. When the first stop 120 contacts the second stop 240, the flow guide component 200 will not be able to continue to be inserted into the outer tube 100. The axial installation position of the flow guide component 200 in the outer tube 100 is determined.

[0019] The cooperation between the first limiting part 130 and the second limiting part 250 can be the cooperation of a sliding groove and a slider. When the flow guiding component 200 is inserted into the outer tube 100, the slider slides in the sliding groove. On the one hand, it can guide the insertion of the flow guiding component 200. On the other hand, the cooperation between the slider and the sliding groove can restrict the rotation of the flow guiding component 200 in the outer tube 100.

[0020] In some preferred embodiments of this application, reference may be made to Figure 3 and Figure 4 As shown, the wall of the mounting groove 221 is provided with one of the positioning block 211 and the positioning groove 222, and the outer wall of the guide pipe 210 is provided with the other of the positioning block 211 and the positioning groove 222. The positioning block 211 is inserted into the positioning groove 222 to position the relative position of the guide pipe 210 and the guide sleeve 220.

[0021] After the guide pipe 210 is installed into the mounting groove 221 of the guide sleeve 220, the positioning block 211 is inserted into the positioning groove 222, which can restrict the rotation or movement of the guide pipe 210 relative to the guide sleeve 220, fix the relative position of the guide pipe 210 and the guide sleeve 220, make the relative position between the guide pipe 210 and the guide sleeve 220 stable, and make it easier to assemble the guide assembly 200 into the outer pipe 100 as a whole, so as to avoid the position of the guide pipe 210 relative to the guide sleeve 220 changing during the assembly of the guide assembly 200 into the outer pipe 100 or during the use of the ultrasonic water meter.

[0022] In some preferred embodiments, the positioning block 211 is disposed on the outer wall of the guide pipe 210, and the positioning groove 222 is disposed at the bottom of the mounting groove 221, penetrating the bottom of the mounting groove 221. Because the positioning groove 222 is located at the bottom of the mounting groove 221, during the assembly of the guide pipe 210 into the guide groove, the positioning block 211 is directly inserted into the positioning groove 222 without abutting against the wall of the mounting groove 221, which is more conducive to the assembly of the positioning block 211. Simultaneously, the positioning groove 222 penetrating the bottom of the mounting groove 221 further facilitates the direct insertion of the positioning block 211 into the positioning groove 222.

[0023] In some embodiments provided in this application, reference may be made to Figure 3 and Figure 4As shown, the mounting groove 221 has a limiting groove 223 on its wall, and the guide tube 210 has a limiting protrusion 212 on its outer wall. Along the assembly direction of the guide tube 210 into the mounting groove 221, the thickness of the limiting protrusion 212 gradually decreases until it is flush with the outer wall of the guide tube 210. The assembly direction is from the opening of the mounting groove 221 to the bottom of the groove. The limiting protrusion 212 is used to engage with the limiting groove 223 to prevent the guide tube 210 from detaching from the guide sleeve 220 from the bottom of the mounting groove 221 towards the opening.

[0024] During the process of assembling the guide tube 210 into the mounting groove 221, the limiting protrusion 212, which is flush with the outer wall of the guide tube 210, first contacts the groove wall of the mounting groove 221. As the guide tube 210 gradually approaches the bottom of the mounting groove 221, the gradually thickening limiting protrusion 212 gradually squeezes the groove wall of the mounting groove 221, causing the groove wall to deform to avoid the limiting protrusion 212, so as to ensure that the limiting protrusion 212 can continue to be inserted into the mounting groove 221 until the limiting protrusion 212 moves to the position corresponding to the limiting groove 223. The limiting protrusion 212 is engaged in the limiting groove 223, and the groove wall of the mounting groove 221 is reset. At the same time, since the limiting protrusion 212 has a certain thickness, the limiting protrusion 212 can cooperate with the groove wall of the limiting groove 223 to prevent the guide tube 210 from detaching from the guide sleeve 220 from the bottom of the mounting groove 221 towards the groove opening.

[0025] In some preferred embodiments, two limiting protrusions 212 are provided, and limiting grooves 223 are provided one-to-one with the limiting protrusions 212, with the two limiting protrusions 212 arranged radially along the guide tube 210. The two limiting protrusions 212 respectively cooperate with the corresponding limiting grooves 223, resulting in a more balanced limiting effect on the guide tube 210 and further preventing relative movement between the guide tube 210 and the guide sleeve 220.

[0026] In some embodiments of this application, the second stop portion 240 includes a first engaging block 241 and a support block 242. The first engaging block 241 is located at one end of the guide tube 210, and the support block 242 is located on the outer wall of the guide sleeve 220. Both the first engaging block 241 and the support block 242 are engaged with the first stop portion 120 in a first direction. The guide tube 210 and the guide sleeve 220 are both engaged with the first stop portion 120 to limit movement, which can prevent relative movement between the guide tube 210 and the guide sleeve 220, thereby ensuring the stability of the relative position between the guide tube 210 and the guide sleeve 220.

[0027] In some preferred embodiments, a second locking block 213 is provided at the other end of the guide tube 210, and a portion of the guide sleeve 220 is snapped together between the first locking block 241 and the second locking block 213. The cooperation between the portion of the guide sleeve 220 and the first locking block 241 and the second locking block 213 positions and fixes the relative positions of the guide tube 210 and the guide sleeve 220, preventing relative movement between the guide tube 210 and the guide sleeve 220 from affecting the measurement of the ultrasonic water meter.

[0028] More preferably, the second limiting part 250 is fixed to the outer wall of the guide tube 210 and between the first locking block 241 and the second locking block 213. The second limiting part 250 extends along the first direction, and the first limiting part 130 is a groove structure provided on the inner wall of the outer tube 100, which can be referred to Figure 7 and Figure 8 As shown, the second limiting part 250 is inserted into the first limiting part 130 along the first direction.

[0029] The second limiting part 250 slides within the first limiting part 130, serving as a guide. At the same time, since the second limiting part 250 is also fixed between the first locking block 241 and the second locking block 213, it can strengthen the overall structural strength of the first locking block 241, the second locking block 213, and the guide pipe 210, thereby improving the overall structural strength of the equipment.

[0030] When the flow guiding component 200 is assembled into the outer tube 100, the first locking block 241, the second locking block 213, and the support block 242 all contact and cooperate with the inner wall of the outer tube 100 to stabilize the position of the flow guiding component 200 within the outer tube 100. (See reference...) Figure 5 and Figure 6 As shown.

[0031] In some preferred embodiments, the support block 242 is disposed adjacent to the first snap-fit ​​block 241 relative to the second snap-fit ​​block 213, and during the assembly process of the flow guide assembly 200 and the outer tube 100, the second snap-fit ​​block 213 extends into the outer tube 100 first relative to the first snap-fit ​​block 241.

[0032] The thickness of the second locking block 213 is less than the thickness of the first locking block 241. In this way, the second locking block 213 can first extend into the outer tube 100 without engaging with the first stop part 120, and the first locking block 241 then extends into the outer tube 100 and engages with the first stop part 120.

[0033] The support block 242 is arranged adjacent to the first snap-fit ​​block 241, which allows the first stop portion 120 on the outer tube 100 to be centrally arranged, simplifying the internal structure of the outer tube 100.

[0034] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An ultrasonic water meter valve body, characterized by, The device includes an outer tube (100) and a flow guiding assembly (200). The outer tube (100) has two transducer mounting holes (110). The inner wall of the outer tube (100) is provided with a first stop (120) and a first limiting part (130). The flow guiding assembly (200) includes a flow guiding pipe (210), a flow guiding sleeve (220), and two reflectors (230). The two reflectors (230) are integrally injection molded with the flow guiding sleeve (220). The flow guiding sleeve (220) has a mounting groove (221) located between the two reflectors (230). The flow guiding pipe (210) is installed in the mounting groove (221). The outer peripheral wall of the flow guiding assembly (200) is also provided with a second stop (240) and a second limiting part (250). The flow guiding assembly (200) is inserted into the outer tube (100) along the first direction. The first stop (120) and the second stop (240) stop each other in the first direction. The first limiting part (130) and the second limiting part (250) limit each other in the circumferential direction of the outer tube (100). The reflector plate (230) and the transducer mounting hole (110) correspond one-to-one. The first direction is parallel to the axial direction of the outer tube (100).

2. The ultrasonic water meter valve body according to claim 1, characterized in that, The mounting groove (221) has one of a positioning block (211) and a positioning groove (222) on its wall, and the guide pipe (210) has the other of a positioning block (211) and a positioning groove (222) on its outer wall. The positioning block (211) is inserted into the positioning groove (222) to position the relative position of the guide pipe (210) and the guide sleeve (220).

3. The ultrasonic water meter valve body according to claim 1, characterized in that, The mounting groove (221) has a limiting groove (223) on its wall and a limiting protrusion (212) on its outer wall. Along the assembly direction from the guide pipe (210) to the mounting groove (221), the thickness of the limiting protrusion (212) gradually decreases until it is flush with the outer wall of the guide pipe (210). The assembly direction is from the opening of the mounting groove (221) to the bottom of the groove. The limiting protrusion (212) is used to engage with the limiting groove (223) to prevent the guide tube (210) from disengaging from the guide sleeve (220) in the direction from the bottom of the mounting groove (221) to the opening of the groove.

4. The ultrasonic water meter valve body according to claim 1, characterized in that, The second stop (240) includes a first snap-fit ​​block (241) and a support block (242). The first snap-fit ​​block (241) is located at one end of the guide tube (210), and the support block (242) is located on the outer wall of the guide sleeve (220). Both the first snap-fit ​​block (241) and the support block (242) are engaged with the first stop (120) in a first direction.

5. The ultrasonic water meter valve body according to claim 4, characterized in that, The other end of the guide tube (210) is provided with a second snap-fit ​​block (213), and part of the guide sleeve (220) is snap-fitted between the first snap-fit ​​block (241) and the second snap-fit ​​block (213).

6. The ultrasonic water meter valve body according to claim 5, characterized in that, The second limiting part (250) is fixed to the outer wall of the guide tube (210) and fixed between the first snap-fit ​​block (241) and the second snap-fit ​​block (213). The second limiting part (250) extends along the first direction. The first limiting part (130) is a groove structure provided on the inner wall of the outer tube (100). The second limiting part (250) is inserted into the first limiting part (130) along the first direction.

7. The ultrasonic water meter valve body according to claim 5, characterized in that, When the flow guide assembly (200) is assembled into the outer tube (100), the first snap-fit ​​block (241), the second snap-fit ​​block (213) and the support block (242) all contact and cooperate with the inner wall of the outer tube (100).

8. The ultrasonic water meter valve body according to claim 7, characterized in that, The support block (242) is disposed adjacent to the first snap-fit ​​block (241) relative to the second snap-fit ​​block (213), and during the assembly process of the flow guide assembly (200) and the outer tube (100), the second snap-fit ​​block (213) extends into the outer tube (100) first relative to the first snap-fit ​​block (241).

9. An ultrasonic water meter valve body according to claim 2, characterized in that, The positioning block (211) is disposed on the outer wall of the guide pipe (210), the positioning groove (222) is disposed at the bottom of the mounting groove (221), and the positioning groove (222) penetrates the bottom of the mounting groove (221).

10. An ultrasonic water meter valve body according to claim 3, characterized in that, Two limiting protrusions (212) are provided, and the limiting grooves (223) are provided in a one-to-one correspondence with the limiting protrusions (212), and the two limiting protrusions (212) are arranged radially along the guide tube (210).

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