An ultrasonic heat meter with turbulence resistance

Abstract

The utility model discloses an anti-interference ultrasonic heat meter, including pipe section part, heat meter detection part, the water inlet side of pipe section part is provided with pipe section water inlet flange, and the water outlet side of pipe section part is provided with pipe section water outlet flange, the inner diameter wall surface of pipe section water inlet flange is opened with the first sealing ring groove and the second sealing ring groove of mutual interval, and the inner diameter wall surface of pipe section water outlet flange is formed with the connecting inclined plane towards the water outlet side, and the end of connecting inclined plane connects transition and has sealing sharp convex, and the extension of sealing sharp convex forms the end as the connecting edge, the structure design of pipe section water inlet flange, pipe section water outlet flange enhances the sealing performance of respective flange connecting place, enhances the passing of fluid medium, and comprehensively enhances the anti-interference performance index of ultrasonic heat meter, and at the same time, the corrosion resistance of flange connecting place is enhanced, and the anti-interference performance after long -term use is guaranteed.

Description

Technical Field

[0001] This utility model relates to ultrasonic heat meters, and more particularly to an anti-turbulence ultrasonic heat meter. Background Technology

[0002] An ultrasonic heat meter is an instrument that measures flow rate and displays the heat energy released or absorbed by water flowing through a heat exchange system using ultrasonic methods. Ultrasonic heat meters are generally divided into pipe-type ultrasonic heat meters and insertion-type ultrasonic heat meters. Among them, the pipe-type ultrasonic heat meter mainly obtains the calorific value by measuring parameters—the heat transfer oil and its flow rate, and the inlet and outlet temperatures—using two sensors. After compensation and integration of relative density and heat dew point temperature, the calorific value is obtained.

[0003] The accuracy of ultrasonic heat meters is a crucial research topic in the industry and a performance indicator of utmost concern to customers. Research on the factors affecting existing heat meter calibration results indicates that the main factors influencing accuracy are: turbulence, a large amount of air within the pipes, and water temperature. While air and water temperature can be addressed through adjustments by specialists, turbulence is primarily caused directly by the flowing medium.

[0004] Turbulence typically arises from two causes: uneven velocity distribution of the medium within the pipe, leading to flow distortions such as vortices; and poor pipe sealing of the heat meter. For in-line ultrasonic heat meters, turbulence is usually caused by foreign objects inside the pipe or sealing issues. Existing solutions for in-line ultrasonic heat meters impose specific length requirements on the upstream and downstream pipe sections, known in the industry as the "ten-in-one, five-in-one" rule. This rule means that the inlet side of the ultrasonic heat meter should have a straight pipe section exceeding 10 times the pipe diameter, and the outlet side should have a straight pipe section exceeding 5 times the pipe diameter. This design helps reduce turbulence in the two straight pipe sections, ensuring flow stability. However, this traditional design method results in excessive length on the inlet side, leading to misalignment, misalignment, and poor sealing at the flange connection between the in-line ultrasonic heat meter and the inlet pipe. Furthermore, over long-term use, cavitation corrosion easily occurs at the flange connection, affecting its sealing performance and causing turbulence. Utility Model Content

[0005] To address the shortcomings of the aforementioned technologies, this invention provides an anti-turbulence ultrasonic heat meter.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is: an anti-turbulence ultrasonic heat meter, including a pipe section and a heat meter detection part installed on the pipe section, wherein a pipe section inlet flange is provided at the free end of the water inlet side of the pipe section, and a pipe section outlet flange is provided at the free end of the water outlet side of the pipe section.

[0007] The inner diameter wall of the pipe section inlet flange is provided with a first sealing ring groove and a second sealing ring groove that are spaced apart from each other. The first sealing ring groove and the second sealing ring groove each form a connecting surface with the inner diameter wall of the pipe section inlet flange.

[0008] The inner diameter wall of the pipe section outlet flange has a connecting slope facing the outlet side, and the end of the connecting slope has a sealing tip, the extension of the sealing tip forming the connecting edge.

[0009] Furthermore, the inlet side of the pipe section is equipped with an inlet side pipe, which is connected to the inlet flange of the pipe section through the inlet side flange at its free end. The sealing surfaces of the pipe section inlet flange and the inlet side flange are both FF, i.e., full plane.

[0010] Furthermore, the first sealing ring groove and the second sealing ring groove have the same groove depth and their maximum diameters are both greater than the maximum diameter of the inner wall of the pipe section inlet flange. Both the first sealing ring groove and the second sealing ring groove are equipped with sealing rings.

[0011] Furthermore, the first sealing ring groove and the second sealing ring groove are spaced apart from each other and a spacer convex ring is formed between them. The transition surfaces formed by the spacer convex ring and the first sealing ring groove and the second sealing ring groove are also connecting surfaces.

[0012] Furthermore, the first sealing ring groove is adjacent to the inlet flange.

[0013] Furthermore, the connecting slope is inclined and its maximum diameter gradually increases from its starting side to the outlet side.

[0014] Furthermore, the outlet side of the pipe section is equipped with an outlet pipe, which is connected to the outlet flange of the pipe section through the outlet flange at its free end.

[0015] Furthermore, the sealing tip intrudes into the inner diameter region of the pipe section outlet flange, with the connecting edge abutting against the inner diameter edge of the pipe section outlet flange. The sealing tip forms a sealing mating surface facing the inner diameter wall of the pipe section outlet flange, and a sealing ring is disposed on the sealing mating surface.

[0016] Furthermore, the heat meter detection section includes a heat meter body, a connecting body located directly below the heat meter body, a ring-shaped bracket supporting the heat meter body and the connecting body, and a temperature probe communicating with the interior of the pipe section.

[0017] An anti-turbulence ultrasonic heat meter enhances the sealing performance of the flange connections by structurally adjusting the inner diameter of the inlet and outlet flanges of the pipe section, thereby improving the fluid medium's permeability and comprehensively enhancing the anti-turbulence performance of the ultrasonic heat meter. At the same time, it enhances the corrosion resistance of the flange connections, further ensuring excellent anti-turbulence performance after long-term use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of the pipe section inlet flange of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the water outlet flange of the pipe section of this utility model.

[0021] Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0022] In the picture:

[0023] 1. Pipe section; 11. Connecting pipe;

[0024] 12. Pipe inlet flange; 121. First sealing ring groove; 122. Second sealing ring groove; 123. Spacer ring; 124. Connecting facade;

[0025] 13. Pipe section outlet flange; 131. Connecting bevel; 132. Sealing protrusion; 133. Connecting edge; 134. Sealing mating surface;

[0026] 2. Heat meter detection section; 21. Heat meter body; 22. Circumferential bracket; 23. Connecting body; 24. Temperature probe;

[0027] 3. Inlet side pipe; 31. Inlet side flange;

[0028] 4. Outlet side pipe; 41. Outlet side flange. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1-4 As shown in the figure, this embodiment of the anti-turbulence ultrasonic heat meter mainly makes structural changes to the sealing performance of the flange connection, thereby achieving the purpose of anti-turbulence in the ultrasonic heat meter.

[0031] Example 1

[0032] like Figure 1As shown, this application includes a pipe section 1 and a heat meter detection part 2 installed on the pipe section 1. The free end of the pipe section 1 on the water inlet side is provided with a pipe section water inlet flange 12, and the free end of the pipe section 1 on the water outlet side is provided with a pipe section water outlet flange 13. The heat meter detection part 2 includes a heat meter body 21, a connecting body 23 located directly below the heat meter body 21, a ring-shaped bracket 22 supporting the heat meter body 21 and the connecting body 23, and a temperature probe 24 communicating with the inside of the pipe section 1. It should be noted that the heat meter detection part 2 of this application is prior art and can be customized by the manufacturer. The specific parameter information is customized according to the actual application scenario and the parameters of the pipe section 1.

[0033] The inlet side of pipe section 1 is equipped with an inlet pipe 3, which is existing technology. The inlet pipe 3 is connected to the pipe section inlet flange 12 of pipe section 1 through the inlet flange 31 at its free end. The sealing surfaces of the pipe section inlet flange 12 and the inlet flange 31 are both FF, that is, full plane. The pipe section inlet flange 12 and the inlet flange 31 are fastened together by bolts.

[0034] The outlet side of the pipe section 1 is equipped with an outlet pipe 4, which is existing technology. The outlet pipe 4 is connected to the outlet flange 13 of the pipe section 1 through the outlet flange 41 at its free end.

[0035] Example 2

[0036] Based on Example 1, this embodiment redesigns the structure of the inlet flange 12 of the pipe section to enhance the sealing effect at the inlet flange 12 of the pipe section and achieve excellent anti-turbulence effect.

[0037] In this embodiment, as Figure 2 As shown, a first sealing ring groove 121 and a second sealing ring groove 122 spaced apart are provided on the inner diameter wall of the pipe section water inlet flange 12. The first sealing ring groove 121 and the second sealing ring groove 122 each form a connecting surface 124 with the inner diameter wall of the pipe section water inlet flange 12.

[0038] Preferably, the first sealing ring groove 121 and the second sealing ring groove 122 have the same groove depth and their maximum diameters are both greater than the maximum diameter of the inner wall of the pipe section inlet flange 12. The groove widths of the first sealing ring groove 121 and the second sealing ring groove 122 are also the same. Both the first sealing ring groove 121 and the second sealing ring groove 122 are equipped with sealing rings. Therefore, the sealing rings of the first sealing ring groove 121 and the second sealing ring groove 122 can be interchanged, reducing procurement costs.

[0039] Regarding the assembly of the sealing rings, the sealing rings are adhered to the first sealing ring groove 121 and the second sealing ring groove 122 using existing sealant or epoxy adhesive. The size of the sealing rings is adapted to the first sealing ring groove 121 and the second sealing ring groove 122. After assembly, the sealing rings perfectly fill the groove depths of the first sealing ring groove 121 and the second sealing ring groove 122. In this embodiment, the material of the sealing rings is preferably polytetrafluoroethylene (PTFE), which can effectively resist cavitation corrosion and enhance sealing performance. The two sealing rings set in the first sealing ring groove 121 and the second sealing ring groove 122 are mainly to increase the corrosion resistance at this location, thereby ensuring excellent sealing performance. The sealing performance is further guaranteed by the FF sealing surfaces of the pipe section inlet flange 12 and the inlet side flange 31.

[0040] The first sealing ring groove 121 and the second sealing ring groove 122 are spaced apart from each other and a spacer protrusion 123 is formed between them. The transition surfaces formed by the spacer protrusion 123 and the first sealing ring groove 121 and the second sealing ring groove 122 are also connecting surfaces 124. The connecting surfaces 124 provide accurate positioning and limiting for the assembly of the sealing rings.

[0041] In this embodiment, the first sealing ring groove 121 is adjacent to the water inlet flange 31, and the sealing ring assembled in the first sealing ring groove 121 abuts against the water inlet flange 31, which further enhances the sealing performance at this point.

[0042] Example 3

[0043] Based on embodiments 1 and 2, this embodiment designs the structure of the water outlet flange 13 of the pipe section to increase the sealing effect at the water outlet flange 13 of the pipe section, so that the water can be output as soon as possible and prevent turbulence in the pipe section 1 caused by poor water output.

[0044] The inner diameter wall of the pipe section outlet flange 13 has a connecting slope 131 facing the outlet side, and the end of the connecting slope 131 is connected to a sealing tip 132, and the extension of the sealing tip 132 forms a connecting edge 133.

[0045] Preferably, the connecting slope 131 is sloped and the maximum diameter of the connecting slope 131 gradually increases from its starting side to the water outlet side. This increase is designed to be processed within 3% of the inner pipe diameter, which can increase the water output efficiency. The slope transition design helps to prevent obstruction and turbulence and also helps to prevent foreign objects in the fluid medium from clogging it.

[0046] The sealing protrusion 132 penetrates into the inner diameter region of the pipe section outlet flange 13, and the connecting edge 133 abuts against the inner diameter edge of the pipe section outlet flange 13, thereby achieving a good sealing effect at the direct contact point between the two. The sealing protrusion 132 forms a sealing mating surface 134 facing the inner diameter wall of the pipe section outlet flange 13. A sealing ring is disposed on the sealing mating surface 134. The sealing ring is customized to fit the shape of the area. The sealing ring is preferably made of polytetrafluoroethylene, similar to the sealing ring in Embodiment 2, to increase the corrosion resistance.

[0047] This application discloses an anti-turbulence ultrasonic heat meter, which enhances the sealing performance of the flange connection by structurally adjusting the inner diameter of the inlet flange and outlet flange of the pipe section, thereby enhancing the fluid medium's permeability and comprehensively improving the anti-turbulence performance of the ultrasonic heat meter. At the same time, it enhances the corrosion resistance of the flange connection, further ensuring excellent anti-turbulence performance after long-term use.

[0048] The above embodiments are not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are also within the protection scope of the present utility model.

Claims

1. An anti-turbulence ultrasonic heat meter, characterized in that: It includes a pipe section (1) and a heat meter detection section (2) installed on the pipe section (1). The free end of the pipe section (1) on the water inlet side is provided with a pipe section water inlet flange (12), and the free end of the pipe section (1) on the water outlet side is provided with a pipe section water outlet flange (13). The inner diameter wall of the pipe section inlet flange (12) is provided with a first sealing ring groove (121) and a second sealing ring groove (122) spaced apart from each other. The first sealing ring groove (121) and the second sealing ring groove (122) each form a connecting surface (124) with the inner diameter wall of the pipe section inlet flange (12). The inner diameter wall of the pipe section outlet flange (13) has a connecting slope (131) facing the outlet side, and the end of the connecting slope (131) is connected to a sealing tip (132), and the extension of the sealing tip (132) forms a connecting edge (133).

2. The anti-turbulence ultrasonic heat meter according to claim 1, characterized in that: The inlet side of the pipe section (1) is provided with an inlet pipe (3). The inlet pipe (3) is connected to the pipe section inlet flange (12) of the pipe section (1) through the inlet flange (31) at its free end. The sealing surfaces of the pipe section inlet flange (12) and the inlet flange (31) are both FF, that is, full plane.

3. The anti-turbulence ultrasonic heat meter according to claim 1, characterized in that: The first sealing ring groove (121) and the second sealing ring groove (122) have the same groove depth and their maximum diameters are both greater than the maximum diameter of the inner wall of the pipe section inlet flange (12). Both the first sealing ring groove (121) and the second sealing ring groove (122) are equipped with sealing rings.

4. The anti-turbulence ultrasonic heat meter according to claim 3, characterized in that: The first sealing ring groove (121) and the second sealing ring groove (122) are spaced apart from each other and a spacer convex ring (123) is formed between them. The transition surfaces formed by the spacer convex ring (123) and the first sealing ring groove (121) and the second sealing ring groove (122) are also connecting surfaces (124).

5. The anti-turbulence ultrasonic heat meter according to claim 4, characterized in that: The first sealing ring groove (121) is adjacent to the inlet side flange (31).

6. The anti-turbulence ultrasonic heat meter according to claim 1, characterized in that: The connecting inclined surface (131) is inclined and the maximum diameter of the connecting inclined surface (131) gradually increases from its starting side to the water outlet side.

7. The anti-turbulence ultrasonic heat meter according to claim 1, characterized in that: The outlet side of the pipe section (1) is provided with an outlet pipe (4), and the outlet pipe (4) is connected to the outlet flange (13) of the pipe section (1) through the outlet flange (41) at its free end.

8. The anti-turbulence ultrasonic heat meter according to claim 7, characterized in that: The sealing tip (132) intrudes into the inner diameter region of the pipe section outlet flange (13), the connecting edge (133) abuts against the inner diameter edge of the pipe section outlet flange (13), the sealing tip (132) forms a sealing mating surface (134) facing the inner diameter wall of the pipe section outlet flange (13), and a sealing ring is disposed on the sealing mating surface (134).

9. The anti-turbulence ultrasonic heat meter according to claim 1, characterized in that: The heat meter detection part (2) includes a heat meter body (21), a connecting body (23) located directly below the heat meter body (21), a ring-shaped bracket (22) supporting the heat meter body (21) and the connecting body (23), and a temperature probe (24) communicating with the inside of the pipe section (1).

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