Self-balancing symmetrical integrated orifice plate flowmeter and machining process thereof

Abstract

The invention discloses a self-balancing symmetrical integrated orifice plate flowmeter and a machining process thereof, and belongs to the technical field of flowmeters.The self-balancing symmetrical integrated orifice plate flowmeter comprises a connecting pipe, an orifice plate and a supporting mechanism. According to the supporting mechanism, by arranging the connecting assembly, the adjusting assembly and the bearing assembly, the connecting pipe can be conveniently supported, the stability of the connecting pipe in the working process is improved, then the accuracy of a measurement result is improved, vibration and deformation of the connecting pipe under fluid scouring are reduced, and the durability of the flowmeter is improved; the overall height of the supporting mechanism can be adjusted according to the height of the connecting pipe, and the supporting mechanism can adapt to different installation environments.

Description

Technical Field

[0001] The invention belongs to the technical field of flow meters, and in particular relates to a self-balancing symmetrical integrated orifice flow meter and a processing technology thereof. Background Art

[0002] In the field of fluid measurement technology, orifice flowmeter, as a commonly used flow measurement device, has been widely used. Traditional orifice flowmeters are usually composed of orifice plates, pressure pipes, connecting pipes and other components. Its working principle is to throttle the fluid through the orifice plate and calculate the flow rate using the pressure difference before and after throttling. With the continuous development of industrial technology, orifice flowmeters have been significantly improved in terms of structural design, measurement accuracy, stability and reliability.

[0003] However, the existing orifice flowmeters still have some shortcomings in design and use. Traditional orifice flowmeters lack a supporting mechanism. On the one hand, the orifice flowmeter is prone to displacement due to vibration or external force interference during installation and use, resulting in increased measurement errors. On the other hand, unstable support may also cause changes in the fluid flow state, increase eddy currents and vibrations, and further affect the accuracy of the measurement results. Summary of the invention

[0004] The purpose of the present invention is to provide a self-balancing and symmetrical integrated orifice flowmeter and its processing technology, which are used to solve the technical problems that traditional orifice flowmeters in the prior art lack a supporting mechanism. On the one hand, the orifice flowmeter is easily displaced due to vibration or external force interference during installation and use, resulting in increased measurement errors. On the other hand, unstable support may also cause changes in the flow state of the fluid, increase eddy currents and vibrations, and further affect the accuracy of the measurement results.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A self-balancing and symmetrical integrated orifice flowmeter comprises: a connecting pipe; an orifice plate located in the connecting pipe and used to re-rectify the flow velocity distribution curve of the upstream fluid, and having four throttling holes and a self-balancing rectification structure, wherein the self-balancing rectification structure is located at the center of the orifice plate; a supporting mechanism, comprising: a connecting component sleeved on the connecting pipe; an adjusting component connected to the connecting component; a supporting component connected to the adjusting component and used to cooperate with the connecting component and the adjusting component to support the connecting pipe.

[0006] Preferably, the connecting assembly includes: a first arc-shaped plate; a second arc-shaped plate; two first bolts for connecting the first arc-shaped plate and the second arc-shaped plate; a mounting seat mounted on the first arc-shaped plate; a mounting plate; a second bolt for connecting the mounting plate and the mounting seat; and two fixing columns, respectively mounted on opposite side surfaces of the mounting seat and the mounting plate.

[0007] Preferably, the adjustment assembly includes: a fixing cylinder installed between the mounting seat and the mounting plate; an adjustment rod slidably connected to the fixing cylinder; and a tightening bolt threadedly connected to the fixing cylinder, the rod portion of which is in contact with the adjustment rod.

[0008] Preferably, the adjustment component also includes: two strip grooves, which are respectively opened on the two side surfaces of the fixed tube, and the two fixed columns are respectively located in the two strip grooves, and the fixed columns are slidingly connected to the strip grooves; two supporting column grooves, which are respectively opened on the two side surfaces of the fixed tube, and are respectively connected to the two strip grooves for supporting the fixed columns.

[0009] Preferably, the supporting assembly includes: a first supporting rack fixedly connected to the lower end of the adjusting rod; and a second supporting rack detachably connected to the first supporting rack.

[0010] Preferably, the supporting assembly further includes: a first connecting block, which is integrally formed with the first supporting rack; a second connecting block, which is integrally formed with the second supporting rack and matches the first connecting block; and two connecting members, which are used to connect the first connecting block and the second connecting block.

[0011] Preferably, the first bracket and the second bracket are both provided with semicircular through grooves; the supporting assembly also includes: two cleaning brushes, respectively mounted on the first bracket and the second bracket; two first insertion rods, both mounted on the first bracket; two second insertion rods, both mounted on the second bracket, and after the first bracket and the second bracket are docked, the second insertion rods and the first insertion rods form a hexagonal prism.

[0012] Preferably, the connecting member includes: a connecting tube; a threaded rod fixedly connected to the connecting tube and used to connect the first connecting block and the second connecting block; a hexagonal prism groove opened on the connecting tube and plugged into the hexagonal prism composed of the first plug rod and the second plug rod.

[0013] Preferably, the self-balancing symmetrical integrated orifice flowmeter also includes: a first pressure-taking tube, installed on the circumferential surface of the connecting tube and connected to the interior of the connecting tube; a second pressure-taking tube, installed on the circumferential surface of the connecting tube and connected to the interior of the connecting tube; two flanges, respectively installed at both ends of the connecting tube, and a plurality of flange holes are provided on the flanges.

[0014] The processing technology of the self-balancing symmetrical integrated orifice flowmeter includes the following steps: step 1, through a casting process, the metal material is processed into an integral blank including a connecting pipe, a first pressure-taking pipe and a second pressure-taking pipe, an orifice plate and a flange; step 2, the inner and outer walls of the integral blank are polished, the throttling hole is accurately enlarged and chamfered, and the flange hole on the flange is drilled; step 3, the first arc plate and the second arc plate are installed on the connecting pipe using two first bolts; step 4, the fixing tube is placed between the mounting plate and the mounting seat, and the mounting plate and the mounting seat are connected by the second bolt; step 5, the first bracket and the second bracket are connected using two connecting members.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The support mechanism in the present invention is convenient for supporting the connecting pipe by setting a connecting component, an adjusting component and a supporting component, thereby improving the stability of the connecting pipe during operation, thereby improving the accuracy of the measurement result, and reducing the vibration and deformation of the connecting pipe under fluid flushing, thereby improving the durability of the flow meter; the overall height of the support mechanism can also be adjusted according to the height of the connecting pipe, so as to adapt to different installation environments.

[0016] 2. The supporting assembly in the present invention is provided with a detachable first supporting rack and a second supporting rack, and the first supporting rack and the second supporting rack are both provided with a semicircular through groove. After the first supporting rack and the second supporting rack are docked, a circular groove matching the connecting pipe can be formed, and a cleaning brush is provided inside. This design enables the user to easily clean the outer surface of the connecting pipe, effectively remove attached dirt and impurities, reduce their corrosion and wear on the connecting pipe, thereby ensuring the long-term stable operation of the flow meter.

[0017] 3. The supporting assembly in the present invention can be reassembled so that the fixed tube and the adjusting rod can be used as temporary handles, making it easy to lift the connecting tube and move the device. The connection method of the supporting assembly in the device is flexible, which enables the device to be applied to more application scenarios, thereby improving its practicality and applicability.

[0018] 4. The self-balancing symmetrical integrated orifice flowmeter in the present invention can re-rectify the flow velocity distribution curve of the upstream fluid by setting an orifice plate, four throttling holes and a self-balancing rectification structure, which can reduce eddy currents, vibrations and signal noise, greatly improve the flow field stability, and thus improve the accuracy of flow measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A three-dimensional diagram of the self-balancing symmetrical integrated orifice flowmeter of the present invention; Figure 2 An exploded view of the connecting pipe and the orifice plate in the present invention; Figure 3 is a three-dimensional diagram of the support mechanism in the present invention; Figure 4 For the present invention Figure 3 Exploded diagram of Figure 5 It is a schematic diagram of the assembly structure of the mounting plate, the second bolt and the fixing column in the present invention; Figure 6 It is a stereoscopic diagram of the self-balancing symmetrical integrated orifice flowmeter in the present invention in a clean state; Figure 7 is a schematic diagram of the support mechanism in another state of the present invention; Figure 8 An exploded view of the first support rack, the first connecting block, the second support rack and the connecting member in the present invention; Fig. 9 It is a three-dimensional diagram of the self-balancing symmetrical integrated orifice flowmeter of the present invention when being carried; Reference numerals: 100, connecting pipe; 101, first pressure-taking pipe; 102, second pressure-taking pipe; 103, orifice plate; 104, throttle hole; 105, flange; 106, flange hole; 107, self-balancing rectifying structure; 200, supporting mechanism; 210, connecting assembly; 211, first arc plate; 212, second arc plate; 213, first bolt; 214, mounting seat; 215, mounting plate; 216, second bolt; 217, fixing column; 220 , adjusting assembly; 221, fixing tube; 222, strip groove; 223, supporting column groove; 224, adjusting rod; 225, tightening bolt; 230, supporting assembly; 231, first supporting rack; 232, first connecting block; 233, second supporting rack; 234, second connecting block; 235, connecting piece; 2351, connecting tube; 2352, threaded rod; 2353, hexagonal prism groove; 236, cleaning brush; 237, first plug rod; 238, second plug rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1: Figure 1-Figure 4 As shown, the self-balancing symmetrical integrated orifice flowmeter includes a connecting pipe 100, an orifice plate 103 and a supporting mechanism 200.

[0023] The connecting pipe 100 is provided with a first pressure-taking pipe 101 and a second pressure-taking pipe 102, and both the first pressure-taking pipe 101 and the second pressure-taking pipe 102 are connected to the inside of the connecting pipe 100. Flanges 105 are provided at both ends of the connecting pipe 100, and a plurality of flange holes 106 are provided on the flanges 105. By providing the flanges 105 and the flange holes 106, it is convenient to connect the connecting pipe 100 with the upstream and downstream pipelines.

[0024] The orifice plate 103 is located in the connecting tube 100. The orifice plate 103 and the connecting tube 100 are integrally formed. The orifice plate 103 is located between the first pressure-taking tube 101 and the second pressure-taking tube 102. The orifice plate 103 is used to re-rectify the flow velocity distribution curve of the upstream fluid. The orifice plate 103 has four throttling holes 104 and a self-balancing rectifying structure 107. The self-balancing rectifying structure 107 is located at the center of the orifice plate 103. By setting four symmetrical throttling holes 104, the flow field can be balanced, the eddy current, vibration and signal noise are reduced, and the flow field stability is greatly improved. The self-balancing rectifying structure 107 is a hemispherical solid structure, and there is at least one self-balancing rectifying structure 107.

[0025] Specifically, by setting the orifice plate 103, the fluid can be guided to throttle during flow. At the same time, the four equivalent, evenly and symmetrically distributed throttling holes 104 have accurately processed sharp-angle guides, and have strict requirements and quality control on the surface processing accuracy and roughness of the adjustable throttling body. This design overcomes the right-angle burr-edged porous throttling devices currently on the market. Because they have no requirements on the processing accuracy of the holes and no processing sharp angles, the porous throttling body is easily deformed and worn after long-term erosion by the fluid, resulting in a large change in the β value after the porous cumulative wear and cannot be corrected, and the design defects that cause inaccurate measurement can eliminate the erosion and wear of the fluid on the adjustable throttling body to the greatest extent, so that its β value is stable and unchanged, with long-term stability, which can meet the requirements of long-term operation of the device.

[0026] The design of the four throttling holes 104 being equally distributed in this self-balancing symmetrical integrated orifice flowmeter not only effectively reduces the large pressure loss caused by one hole, but also avoids the potential safety hazard caused by the reduction in the overall strength of the throttling component due to throttling with more holes. By increasing the thickness of the porous throttling body to improve its strength, the friction area and contact time between the fluid and the surface of the porous throttling body are further prolonged, thereby increasing the pressure loss, which is not conducive to energy saving.

[0027] like Figure 3 and Figure 4 As shown, the support mechanism 200 includes a connecting assembly 210, an adjusting assembly 220 and a supporting assembly 230. The connecting assembly 210 is sleeved on the connecting tube 100; the adjusting assembly 220 is connected to the connecting assembly 210; the supporting assembly 230 is connected to the adjusting assembly 220, and the supporting assembly 230 is used to cooperate with the connecting assembly 210 and the adjusting assembly 220 to support the connecting tube 100.

[0028] Specifically, when in use, by installing the connecting component 210 on the connecting pipe 100, adjusting the distance between the connecting component 210 and the supporting component 230, the supporting component 230 is made to contact the ground, so that the connecting pipe 100 is supported by the supporting mechanism 200, thereby improving the stability of the connecting pipe 100.

[0029] like Figure 4 and Figure 5 As shown, the connection assembly 210 includes a first arc-shaped plate 211 , a second arc-shaped plate 212 , two first bolts 213 , a mounting seat 214 , a mounting plate 215 , a second bolt 216 and two fixing columns 217 .

[0030] The first bolt 213 is used to connect the first curved plate 211 and the second curved plate 212. The head of the first bolt 213 is provided with an extension plate, so that the first bolt 213 can be rotated by hand without touching a tool. The mounting seat 214 is mounted on the first curved plate 211; the second bolt 216 is used to connect the mounting plate 215 and the mounting seat 214; and two fixing columns 217 are respectively mounted on the opposite side surfaces of the mounting seat 214 and the mounting plate 215.

[0031] Specifically, when the first curved plate 211 and the second curved plate 212 need to be installed on the connecting tube 100, the second curved plate 212 is placed on the connecting tube 100, and then the first curved plate 211 is connected to the first curved plate 211 from the bottom of the connecting tube 100. Finally, the first curved plate 211 and the second curved plate 212 are connected using two first bolts 213 so that the first curved plate 211 and the second curved plate 212 form a circular ring and are sleeved on the connecting tube 100.

[0032] like Figure 3 , Figure 4 , Figure 7 and Fig. 9 As shown, the adjustment assembly 220 includes a fixed cylinder 221, an adjustment rod 224 and a tightening bolt 225. The fixed cylinder 221 is installed between the mounting seat 214 and the mounting plate 215; a slot is provided on the fixed cylinder 221. The adjustment rod 224 is slidably connected to the slot of the fixed cylinder 221; the tightening bolt 225 is threadedly connected to the fixed cylinder 221, and the rod of the tightening bolt 225 is in contact with the adjustment rod 224.

[0033] Specifically, when it is necessary to adjust the overall height of the adjustment component 220, the tightening bolt 225 is rotated counterclockwise to separate the tightening bolt 225 from the adjustment rod 224, so that the adjustment rod 224 can move along the fixed tube 221, thereby facilitating the increase of the overall height of the adjustment component 220. After the height adjustment is completed, the tightening bolt 225 is rotated clockwise to make the tightening bolt 225 abut against the adjustment rod 224, so that the adjustment rod 224 moves relative to the fixed tube 221, thereby fixing the height of the adjustment component 220.

[0034] like Figure 3 and Figure 4 As shown, the adjustment assembly 220 further includes two strip grooves 222 and two supporting column grooves 223. The two strip grooves 222 are respectively provided on the two side surfaces of the fixing cylinder 221, and the two fixing columns 217 are respectively located in the two strip grooves 222, and the fixing columns 217 are slidably connected to the strip grooves 222; the two supporting column grooves 223 are respectively provided on the two side surfaces of the fixing cylinder 221, and are respectively connected to the two strip grooves 222, and are used to support the fixing columns 217.

[0035] Specifically, when the fixing tube 221 is placed vertically and the two fixing columns 217 are respectively located in the two supporting column grooves 223 , the fixing tube 221 can support the two fixing columns 217 , and further support the mounting seat 214 and the first arc-shaped plate 211 .

[0036] like Figure 3 and Figure 4 As shown, the supporting assembly 230 includes a first supporting rack 231 and a second supporting rack 233. The first supporting rack 231 is fixedly connected to the lower end of the adjusting rod 224; the second supporting rack 233 is detachably connected to the first supporting rack 231.

[0037] Specifically, by providing the first supporting rack 231 and the second supporting rack 233 , the contact area between the supporting mechanism 200 and the ground is increased, thereby improving the supporting effect on the connecting pipe 100 .

[0038] Working principle: In actual use, the flange 105 on the connecting pipe 100 is connected to the upstream and downstream pipelines respectively by using a plurality of mounting bolts, and then the external flow calculator is connected to the first pressure taking pipe 101 and the second pressure taking pipe 102.

[0039] Then, by moving the fixed cylinder 221, the two fixed columns 217 are respectively located in the two support column grooves 223. Then, by rotating the jacking bolt 225 counterclockwise, the jacking bolt 225 is no longer in contact with the adjustment rod 224, so that the adjustment rod 224 can move along the fixed cylinder 221, and then, by moving the adjustment rod 224 downward, the first support frame 231 and the second support frame 233 are driven to move downward, so that the first support frame 231 and the support frame are in contact with the ground, and then the jacking bolt 225 is rotated clockwise to make the rod of the jacking bolt 225 in contact with the adjustment rod 224, so that the adjustment rod 224 moves relative to the fixed cylinder 221, thereby fixing the height of the adjustment assembly 220. At this time, the support mechanism 200 supports the connecting pipe 100, thereby improving the stability of the connecting pipe 100.

[0040] Finally, the flow rate is measured by a self-balancing, symmetrical, integrated orifice plate flow meter and flow calculator.

[0041] Example 2: Figure 6-Figure 8 As shown, when other parts are the same as those in Example 1, the difference between this embodiment and Example 1 is that: The supporting assembly 230 further includes a first connecting block 232, a second connecting block 234 and two connecting members 235. The first connecting block 232 is integrally formed with the first supporting frame 231; the second connecting block 234 is integrally formed with the second supporting frame 233 and matches the first connecting block 232; the two connecting members 235 are used to connect the first connecting block 232 and the second connecting block 234.

[0042] Specifically, when in use, the first connecting block 232 and the second connecting block 234 can be connected together by two connecting pieces 235, so that the first bracket 231 and the second bracket 233 are connected together; the first bracket 231 and the second bracket 233 can also be separated by separating the two connecting pieces 235 from the first connecting block 232 and the second connecting block 234.

[0043] like Figure 7 and Figure 8 As shown, a semicircular through groove is provided on the first support frame 231 and the second support frame 233. The support assembly 230 further includes two cleaning brushes 236, two first plug rods 237 and two second plug rods 238. The two cleaning brushes 236 are respectively mounted on the first support frame 231 and the second support frame 233; the two first plug rods 237 are both mounted on the first support frame 231; the two second plug rods 238 are both mounted on the second support frame 233. After the first support frame 231 and the second support frame 233 are docked, the second plug rods 238 and the first plug rods 237 form a hexagonal prism.

[0044] When the first supporting rack 231 and the second supporting rack 233 are butted against each other, a circular groove is formed between them, the circular groove matches the connecting pipe 100 , and the two cleaning brushes 236 are located inside the circular groove.

[0045] like Fig. 9 As shown, the connecting member 235 includes a connecting tube 2351, a threaded rod 2352 and a hexagonal prism groove 2353. The threaded rod 2352 is fixedly connected to the connecting tube 2351, and the threaded rod 2352 is used to connect the first connecting block 232 and the second connecting block 234; the hexagonal prism groove 2353 is provided on the connecting tube 2351, and the hexagonal prism groove 2353 is plugged and matched with the hexagonal prism body composed of the first plug rod 237 and the second plug rod 238.

[0046] Specifically, when the first support rack 231 and the second support rack 233 are docked, the first plug rod 237 and the second plug rod 238 will form a hexagonal prism, and then by putting the connecting tube 2351 on the hexagonal prism formed by the first plug rod 237 and the second plug rod 238, the first plug rod 237 and the second plug rod 238 can be connected together, and then the first support rack 231 and the second support rack 233 can be connected together.

[0047] Working principle: when the connecting pipe 100 needs to be cleaned, the tightening bolt 225 is first rotated counterclockwise so that the tightening bolt 225 no longer abuts against the adjusting rod 224, so that the adjusting rod 224 can move along the fixing tube 221.

[0048] Then, the two first bolts 213 are rotated counterclockwise in sequence so that the first arc plate 211 and the second arc plate 212 are no longer tightly connected, so that the first arc plate 211 and the second arc plate 212 can move along the connecting tube 100, and the first arc plate 211 is brought into contact with the first sampling tube, and then the two first bolts 213 are rotated clockwise in sequence so that the first arc plate 211 and the second arc plate 212 are tightly connected to the connecting tube 100.

[0049] Then, by rotating the two connecting tubes 2351 in sequence, the threaded rod 2352 is separated from the first connecting block 232 and the second connecting block 234, so that the first bracket 231 and the second bracket 233 are separated, and the second bracket 233 is placed on the connecting pipe 100 (at this time, the second bracket 233 is located between the flow calculator and the connecting pipe 100), and then the connecting tube 2351 is rotated to drive the adjusting rod 224 and the first bracket 231 to rotate, so that the first bracket 231 and the second bracket 233 are docked, and the first plug rod 237 and the second plug rod 238 will form a hexagonal prism, and then the connecting tube 2351 is put on the hexagonal prism formed by the first plug rod 237 and the second plug rod 238, so that the first plug rod 237 and the second plug rod 238 can be connected together, and then the first bracket 231 and the second bracket 233 are connected together.

[0050] Then, the tightening bolt 225 is rotated clockwise to make the tightening bolt 225 contact the adjusting rod 224 , so that the adjusting rod 224 cannot move along the fixing tube 221 .

[0051] At this time, by pushing and pulling the two connecting cylinders 2351 along the axial direction of the connecting tube 100, the first bracket 231 and the bracket are driven to move back and forth horizontally, and the fixed cylinder 221 will also move back and forth horizontally under the combined influence of the strip groove 222 and the fixed column 217. When the first bracket 231 and the second bracket 233 move, the two cleaning brushes 236 will be driven to move, and then the cleaning brushes 236 clean the outer surface of the connecting tube 100.

[0052] like Fig. 9 As shown, when the connecting pipe 100 needs to be disconnected from any pipeline and when the device needs to be moved, the first arc plate 211 and the second arc plate 212 can be put on the connecting pipe 100 according to the above operation steps, and then the first bracket 231 and the second bracket 233 can also be put on the connecting pipe 100. By using the fixing tube 221 and the adjusting rod 224 as temporary handles, the connecting pipe 100 can be easily lifted and the device can be easily moved.

[0053] Embodiment 3: A process for manufacturing a self-balancing symmetrical integrated orifice flowmeter, comprising the following steps: Step 1: Select a metal material that meets the design specifications, and process the selected metal material into an integral blank including a connecting pipe 100, a first pressure-taking pipe 101, a second pressure-taking pipe 102, an orifice plate 103, and a flange 105 through a precision casting process; Step 2: Grind the inner and outer walls of the whole blank to ensure that the dimensional accuracy and surface finish of all parts meet the design requirements, accurately expand and chamfer the throttle hole 104, and drill the flange hole 106 on the flange 105; Step 3: Use two first bolts 213 to install the first arc plate 211 and the second arc plate 212 on the connecting pipe 100; Step 4: Place the fixing tube 221 between the mounting plate 215 and the mounting seat 214, and connect the mounting plate 215 and the mounting seat 214 through the second bolt 216, so that the two fixing columns 217 are respectively located in the two supporting column grooves 223; Step 5: Use two connecting members 235 to connect the first supporting rack 231 and the second supporting rack 233; Step 6: Reinforce the connection between the first pressure-taking tube 101, the second pressure-taking tube 102 and the connecting tube 100, and reinforce the connection between the flange 105 and the connecting tube 100. Welding can be selected as the reinforcement method. Step 7. After completing all processing and assembly steps, conduct an overall inspection and test on the self-balancing symmetrical integrated orifice plate 103 flowmeter to check whether the connections of each component are firm and stable. If necessary, adjust and optimize the self-balancing symmetrical integrated orifice plate 103 flowmeter to ensure its performance is optimal.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0055] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Self-balancing symmetrical integrated orifice flowmeter, characterized in that: include: Connecting pipe (100); An orifice plate (103), located in the connecting pipe (100), used for re-rectifying the flow velocity distribution curve of the upstream fluid, having four throttling holes (104) and a self-balancing rectification structure (107), wherein the self-balancing rectification structure (107) is located at the center of the orifice plate (103); A supporting mechanism (200) comprising: A connecting assembly (210) sleeved on the connecting pipe (100); An adjusting component (220) connected to the connecting component (210); A supporting assembly (230) connected to the adjusting assembly (220) and used to cooperate with the connecting assembly (210) and the adjusting assembly (220) to support the connecting pipe (100); The supporting component (230) comprises: A first supporting frame (231) is fixedly connected to the lower end of the adjusting rod (224); A second supporting rack (233) detachably connected to the first supporting rack (231); Two cleaning brushes (236) are respectively mounted on the first supporting rack (231) and the second supporting rack (233).

2. The self-balancing symmetrical integrated orifice flowmeter according to claim 1, characterized in that: The connection component (210) comprises: A first curved plate (211); A second curved plate (212); Two first bolts (213) used to connect the first arc-shaped plate (211) and the second arc-shaped plate (212); A mounting seat (214) mounted on the first arc-shaped plate (211); Mounting plate (215); A second bolt (216) used to connect the mounting plate (215) and the mounting seat (214); Two fixing columns (217) are respectively mounted on opposite side surfaces of the mounting seat (214) and the mounting plate (215).

3. The self-balancing symmetrical integrated orifice flowmeter according to claim 2, characterized in that: The adjustment component (220) comprises: A fixing cylinder (221) mounted between the mounting seat (214) and the mounting plate (215); An adjusting rod (224) slidably connected to the fixing cylinder (221); A tightening bolt (225) is threadedly connected to the fixing cylinder (221), and a rod portion thereof is in contact with the adjusting rod (224).

4. The self-balancing symmetrical integrated orifice flowmeter according to claim 3, characterized in that: The adjustment component (220) further includes: Two strip grooves (222) are respectively provided on two side surfaces of the fixing cylinder (221); the two fixing columns (217) are respectively located in the two strip grooves (222); the fixing columns (217) are slidably connected to the strip grooves (222); Two supporting column grooves (223) are respectively provided on two side surfaces of the fixing cylinder (221), are respectively communicated with the two strip-shaped grooves (222), and are used to support the fixing column (217).

5. The self-balancing symmetrical integrated orifice flowmeter according to claim 4, characterized in that: The supporting assembly (230) further includes: A first connecting block (232) formed integrally with the first supporting frame (231); A second connecting block (234) is formed integrally with the second supporting frame (233) and matches the first connecting block (232); Two connecting pieces (235) are used to connect the first connecting block (232) and the second connecting block (234).

6. The self-balancing symmetrical integrated orifice flowmeter according to claim 5, characterized in that: The first supporting rack (231) and the second supporting rack (233) are both provided with a semicircular through groove; The supporting assembly (230) further includes: Two first insertion rods (237), both mounted on the first supporting frame (231); The two second insertion rods (238) are both mounted on the second supporting frame (233); after the first supporting frame (231) and the second supporting frame (233) are docked, the second insertion rods (238) and the first insertion rods (237) form a hexagonal prism.

7. The self-balancing symmetrical integrated orifice flowmeter according to claim 6, characterized in that: The connecting member (235) comprises: Connecting tube (2351); A threaded rod (2352) fixedly connected to the connecting cylinder (2351) and used to connect the first connecting block (232) and the second connecting block (234); The hexagonal prism groove (2353) is provided on the connecting tube (2351) and is plugged into and matched with the hexagonal prism body formed by the first plug rod (237) and the second plug rod (238).

8. The self-balancing symmetrical integrated orifice flowmeter according to claim 1, characterized in that: Also includes: A first pressure-taking pipe (101) is mounted on the circumferential surface of the connecting pipe (100) and is in communication with the interior of the connecting pipe (100); A second pressure-taking pipe (102) is mounted on the circumferential surface of the connecting pipe (100) and is in communication with the interior of the connecting pipe (100); Two flanges (105) are respectively installed at two ends of the connecting pipe (100), and a plurality of flange holes (106) are formed on the flanges (105).

9. The processing technology of the self-balancing symmetrical integrated orifice flowmeter is characterized in that: The following steps are involved: Step 1: Processing the metal material into an integral blank including a connecting pipe (100), a first pressure taking pipe (101), a second pressure taking pipe (102), an orifice plate (103) and a flange (105) through a casting process; Step 2: grinding the inner and outer walls of the whole blank, accurately expanding and chamfering the throttle hole (104), and drilling the flange hole (106) on the flange plate (105); Step 3: Use two first bolts (213) to install the first arc-shaped plate (211) and the second arc-shaped plate (212) on the connecting pipe (100); Step 4: Place the fixing tube (221) between the mounting plate (215) and the mounting seat (214), and connect the mounting plate (215) and the mounting seat (214) via a second bolt (216); Step 5: Use two connecting pieces (235) to connect the first supporting rack (231) and the second supporting rack (233).

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