A plate flow meter structure with low energy consumption and high precision

Abstract

This utility model relates to the field of plate flow meter technology and discloses a low-energy-consumption, high-precision plate flow meter structure, which solves the problem of poor performance of existing plate flow meters. It includes a flow meter body, a first side-pressure mechanism, and a second side-pressure mechanism, both connected to the flow meter body. The flow meter body is composed of a combined plate, a first pressure-resistant tube, and a second pressure-resistant tube. The combined plate is connected between the first and second pressure-resistant tubes. A first flange and a second flange are fixedly installed at both ends of the first pressure-resistant tube, and a third flange and a fourth flange are fixedly installed at both ends of the second pressure-resistant tube. The combined plate is fixedly connected between the second and third flanges by several bolt groups. This plate flow meter structure improves measurement accuracy, enables single-hole and multi-hole measurements, and enhances measurement flexibility and applicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of plate type flowmeters, in particular to a plate type flowmeter structure with low energy consumption and high precision. Background Art

[0002] Plate flowmeter is also called orifice flowmeter. When the fluid flows through the pipeline, since the inner diameter of the orifice is smaller than the inner diameter of the pipeline, according to Bernoulli's principle, a pressure difference will be generated on both sides of the orifice. By measuring the pressure difference before and after the orifice, the flow value of the fluid passing through the orifice can be detected. Orifice flowmeters are widely used in industrial and agricultural production, national defense construction, scientific research and various fields of people's lives.

[0003] The orifice flowmeters currently in use usually have a pressure sampling hole at the top or side of the high-pressure end and the low-pressure end of the pipeline to achieve pressure difference measurement. It is difficult to ensure the accuracy of flow measurement through only one measurement data, and when errors occur in the data, it is difficult to discover them in time. In addition, the orifice diameter of the existing orifice flowmeter is usually fixed and difficult to change during measurement. Therefore, the measurement accuracy and scope of use are difficult to change. Therefore, the present application proposes a low-energy consumption and high-precision plate flowmeter structure. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a low-energy-consumption and high-precision plate-type flowmeter structure, which effectively solves the problem that the existing plate-type flowmeter has poor use effect.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a low-energy consumption and high-precision plate-type flowmeter structure, comprising a flowmeter body, a first side pressure mechanism and a second side pressure mechanism, wherein the first side pressure mechanism and the second side pressure mechanism are both connected to the flowmeter body, and the flowmeter body is composed of a combined plate body, a first pressure-resistant tube and a second pressure-resistant tube, the combined plate body is connected between the first pressure-resistant tube and the second pressure-resistant tube, the first and second flanges are fixedly provided at both ends of the first pressure-resistant tube, respectively, the third and fourth flanges are fixedly provided at both ends of the second pressure-resistant tube, respectively, and the combined plate body is fixedly connected between the second flange and the third flange by a plurality of bolt groups.

[0006] Preferably, a first sealing gasket is provided between the combined plate body and the second flange, and a second sealing gasket is provided between the combined plate body and the third flange.

[0007] Preferably, the side of the first pressure-resistant tube is provided with a plurality of high-pressure side pressure holes matching the first side pressure mechanism and the second side pressure mechanism, and the side of the second pressure-resistant tube is provided with a plurality of low-pressure side pressure holes matching the first side pressure mechanism and the second side pressure mechanism.

[0008] Preferably, the first side pressure mechanism and the second side pressure mechanism are both composed of a first pressure taking tube, a second pressure taking tube, a first condenser, a second condenser, a first pressure measuring tube, a second pressure measuring tube and a differential pressure transmitter. The first pressure taking tube and the second pressure taking tube are respectively fixedly connected to the high-pressure side pressure taking hole and the low-pressure side pressure taking hole. Pressure taking valves are both provided on the first pressure taking tube and the second pressure taking tube. The first pressure measuring tube is connected to the first pressure taking tube through the first condenser, and the second pressure measuring tube is connected to the second pressure taking tube through the second condenser. The differential pressure transmitter is respectively connected to the first pressure measuring tube and the second pressure measuring tube.

[0009] Preferably, a conducting pipe is fixedly arranged between the first pressure taking pipe and the second pressure taking pipe, a conducting valve is arranged on the conducting pipe, a first drain pipe is fixedly arranged at the bottom end of the side of the first pressure measuring pipe, a second drain pipe is fixedly arranged at the bottom end of the side of the second pressure measuring pipe, and drain valves are arranged on the first drain pipe and the second drain pipe.

[0010] Preferably, the combined plate body is composed of a mounting sleeve, an orifice plate and a plurality of plugging components, the orifice plate is welded to the inside of the mounting sleeve, and the plugging components are inserted and connected to the mounting sleeve and matched with the orifice plate.

[0011] Preferably, a central conical hole is opened at the center of the orifice plate, and a plurality of side conical holes matching the plugging components are opened on the side of the orifice plate.

[0012] Preferably, the side welding arrangement inside the installation sleeve is composed of a plurality of reinforcing beams matching the orifice plate, and a plurality of bolt installation holes matching the bolt group are opened on the installation sleeve, and the bolt installation holes are staggered with the sealing assembly.

[0013] Preferably, the sealing assembly is composed of a U-shaped limit frame, a servo motor, a screw rod, a sealing plate and a threaded sleeve, the U-shaped limit frame is inserted and connected to the inside of the mounting sleeve, the servo motor is fixedly connected to the arc-shaped outer surface of the mounting sleeve, the screw rod is fixedly connected to the output shaft of the servo motor and inserted into the mounting sleeve and the U-shaped limit frame, the sealing plate is slidably connected to the inside of the U-shaped limit frame and matches the side tapered hole, and the threaded sleeve is fixedly connected to the inside of the sealing plate and is sleeved on the screw rod.

[0014] Preferably, the screw rod and the mounting sleeve are rotatably connected via a shaft seal, and a limit slide groove 1 and a limit slide groove 2 matching the sealing plate are respectively provided on both sides of the U-shaped limit frame, and a limit slider 1 and a limit slider 2 slidably connected to the limit slide groove 1 and the limit slide groove 2 are respectively fixedly provided on both sides of the sealing plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) During operation, by setting a first side pressure mechanism and a second side pressure mechanism consisting of a first pressure-taking tube, a second pressure-taking tube, a first condenser, a second condenser, a first pressure measuring tube, a second pressure measuring tube and a differential pressure transmitter, and by setting a plurality of high-pressure side pressure-taking holes and a plurality of low-pressure side pressure-taking holes, it is possible to measure the pressure at different positions of the flow meter body, thereby improving the accuracy of detection. By comparing the measurement data, it is possible to timely determine whether the flow meter is working abnormally. Since the flow meter body itself does not require any energy, only the first side pressure mechanism and the second side pressure mechanism require a small amount of electrical energy, thus achieving low-energy measurement. By setting a conducting tube, a conducting valve, a first drain pipe, a second drain pipe and a drain valve, the residual liquid inside the first pressure measuring tube and the second pressure measuring tube can be cleaned regularly to maintain cleanliness.

[0017] (2) By providing a combined plate body consisting of a mounting sleeve, an orifice plate and a plurality of sealing components, and providing a central conical hole and a plurality of side conical holes, standard measurement can be achieved through the central conical hole, and extended measurement can be achieved by controlling the opening of a corresponding number of side conical holes, thereby improving the adaptability range. By providing a sealing component consisting of a U-shaped limit frame, a servo motor, a screw rod, a sealing plate and a threaded sleeve, the side conical holes can be sealed, the working state of the side conical holes can be controlled, and the flexibility of adjustment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 This is one of the schematic diagrams of the structure of the low-energy-consumption and high-precision plate-type flowmeter of the utility model;

[0021] Figure 2 This is the second schematic diagram of the structure of the low energy consumption and high precision plate type flow meter of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the first side pressure mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the flow meter body of the utility model;

[0024] Figure 5 This is a schematic diagram of the combined plate structure of the utility model;

[0025] Figure 6 For this utility model Figure 4 A partial enlarged view of

[0026] Figure 7This is one of the schematic diagrams of the structure of the plugging component of the utility model;

[0027] Figure 8 This is the second schematic diagram of the structure of the plugging component of the utility model;

[0028] Fig. 9 This is a schematic diagram of the low-pressure end structure of the combined plate body of the utility model;

[0029] Fig.10 This is one of the schematic diagrams of the high-pressure end structure of the combined plate body of the utility model;

[0030] Fig.11 This is the second schematic diagram of the high-pressure end structure of the combined plate body of the utility model;

[0031] Fig.12 This is the third schematic diagram of the high-pressure end structure of the combined plate body of the utility model;

[0032] In the figure: 1, flow meter body; 2, first side pressure mechanism; 3, second side pressure mechanism; 4, combined plate; 5, first pressure tube; 6, second pressure tube; 7, first flange; 8, second flange; 9, third flange; 10, fourth flange; 11, bolt group; 12, sealing gasket 1; 13, sealing gasket 2; 14, high-pressure side pressure hole; 15, low-pressure side pressure hole; 16, first pressure tube; 17, second pressure tube; 18, first condenser; 19, second condenser; 20, first pressure measuring tube; 21, second pressure measuring tube; 22. Differential pressure transmitter; 23. Pressure taking valve; 24. Conducting pipe; 25. Conducting valve; 26. First drain pipe; 27. Second drain pipe; 28. Drain valve; 29. ​​Mounting sleeve; 30. Orifice plate; 31. Sealing assembly; 32. Center cone hole; 33. Side cone hole; 34. Reinforcement beam; 35. Bolt mounting hole; 36. U-shaped limit bracket; 37. Servo motor; 38. Screw rod; 39. Sealing plate; 40. Threaded sleeve; 41. Shaft seal; 42. Limit slide 1; 43. Limit slide 2; 44. Limit slider 1; 45. Limit slider 2. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] Embodiment 1, by Figure 1 , Figure 2 and Figure 4The utility model provides a low-energy consumption and high-precision plate-type flowmeter structure, which includes a flowmeter body 1, a first side pressure mechanism 2, and a second side pressure mechanism 3. The first side pressure mechanism 2 and the second side pressure mechanism 3 are both connected to the flowmeter body 1. The flowmeter body 1 is composed of a combined plate body 4, a first pressure-resistant tube 5, and a second pressure-resistant tube 6. The combined plate body 4 is connected between the first pressure-resistant tube 5 and the second pressure-resistant tube 6. The first and second flanges 7 and 8 are fixedly provided at both ends of the first pressure-resistant tube 5, respectively. The third and fourth flanges 9 and 10 are fixedly provided at both ends of the second pressure-resistant tube 6, respectively. The combined plate body 4 is fixedly connected between the second flange 8 and the third flange 9 by a plurality of bolt groups 11. A sealing gasket 12 is provided between the combined plate body 4 and the second flange 8, and a sealing gasket 2 13 is provided between the combined plate body 4 and the third flange 9.

[0035] When in use, the combined plate body 4 is fixedly connected between the second flange 8 and the third flange 9 by a plurality of bolt groups 11, and the sealing gasket 12 and the sealing gasket 2 13 can improve the sealing of the connection, and the first flange 7 and the fourth flange 10 are connected to the pipeline, so as to realize the measurement of fluid flow.

[0036] Embodiment 2, based on embodiment 1, Figures 1 to 4 It is given that a plurality of high-pressure side pressure holes 14 matching the first side pressure mechanism 2 and the second side pressure mechanism 3 are opened on the side of the first pressure-resistant tube 5, and a plurality of low-pressure side pressure holes 15 matching the first side pressure mechanism 2 and the second side pressure mechanism 3 are opened on the side of the second pressure-resistant tube 6. The first side pressure mechanism 2 and the second side pressure mechanism 3 are both composed of a first pressure-taking tube 16, a second pressure-taking tube 17, a first condenser 18, a second condenser 19, a first pressure measuring tube 20, a second pressure measuring tube 21 and a differential pressure transmitter 22. The first pressure-taking tube 16 and the second pressure-taking tube 17 are fixedly connected to the high-pressure side pressure hole 14 and the low-pressure side pressure hole 15, respectively. The pressure pipes 17 are all provided with pressure valves 23, the first pressure measuring pipe 20 is connected to the first pressure measuring pipe 16 through the first condenser 18, the second pressure measuring pipe 21 is connected to the second pressure measuring pipe 17 through the second condenser 19, the differential pressure transmitter 22 is respectively connected to the first pressure measuring pipe 20 and the second pressure measuring pipe 21, a conducting pipe 24 is fixedly provided between the first pressure measuring pipe 16 and the second pressure measuring pipe 17, a conducting valve 25 is provided on the conducting pipe 24, a first drain pipe 26 is fixedly provided at the bottom end of the side of the first pressure measuring pipe 20, a second drain pipe 27 is fixedly provided at the bottom end of the side of the second pressure measuring pipe 21, and drain valves 28 are provided on the first drain pipe 26 and the second drain pipe 27;

[0037] During measurement, multi-point measurement is achieved through the cooperation of multiple high-pressure side pressure holes 14 and multiple low-pressure side pressure holes 15 with the first side pressure mechanism 2 and the second side pressure mechanism 3. The measurement accuracy can be improved through multiple sets of data. When the first side pressure mechanism 2 or the second side pressure mechanism 3 is damaged, the fault can be discovered in time by comparing the measurement data, further ensuring the accuracy of the measurement. When the flow of hot fluid or steam is detected, condensation can be achieved through the first condenser 18 and the second condenser 19 to reduce the temperature of the fluid and avoid the high-temperature fluid from affecting the measurement accuracy and service life of the differential pressure transmitter 22. Since there will be liquid residue inside the first pressure measuring tube 20 and the second pressure measuring tube 21 during the long measurement process, they need to be cleaned regularly. When cleaning, open the drain valve 28 to discharge the residual liquid inside the first drain pipe 26 and the second drain pipe 27. At the same time, the conduction valve 25 can be opened, and the pressure inside the first drain pipe 26 and the second drain pipe 27 can be balanced through the conduction pipe 24.

[0038] Embodiment 3, based on embodiment 1, Figures 4 to 12 The combined plate body 4 is composed of a mounting sleeve 29, an orifice plate 30 and a plurality of plugging components 31. The orifice plate 30 is welded and connected to the inside of the mounting sleeve 29. The plugging component 31 is inserted and connected to the mounting sleeve 29 and matches the orifice plate 30. A central cone hole 32 is opened at the center of the orifice plate 30. A plurality of side cone holes 33 matching the plugging component 31 are opened on the side of the orifice plate 30. The side welding arrangement inside the mounting sleeve 29 is composed of a plurality of reinforcing beams 34 matching the orifice plate 30. A plurality of bolt mounting holes 35 matching the bolt group 11 are opened on the mounting sleeve 29. The bolt mounting holes 35 are staggered with the plugging component 31. The plugging component 31 is composed of a U-shaped limit frame 36, a servo motor 37, a screw rod 38, a plugging plate 39 and a threaded sleeve 40. The U-shaped limit frame 3 6 is inserted and connected to the inside of the installation sleeve 29, the servo motor 37 is fixedly connected to the arc-shaped outer surface of the installation sleeve 29, the screw rod 38 is fixedly connected to the output shaft of the servo motor 37 and inserted into the installation sleeve 29 and the U-shaped limit frame 36, the blocking plate 39 is slidably connected to the inside of the U-shaped limit frame 36 and matches the side tapered hole 33, the threaded sleeve 40 is fixedly connected to the inside of the blocking plate 39 and sleeved on the screw rod 38, the screw rod 38 and the installation sleeve 29 are rotatably connected through the shaft seal 41, and the two sides of the U-shaped limit frame 36 are respectively provided with a limit slide groove 1 42 and a limit slide groove 2 43 matching the block plate 39, and the two sides of the blocking plate 39 are respectively fixedly provided with a limit slider 1 44 and a limit slider 2 45 slidably connected to the limit slide groove 1 42 and the limit slide groove 2 43;

[0039] During use, the side cone holes 33 are completely blocked by the blocking component 31, and only the central cone hole 32 is used for measurement, so that standardized measurement can be performed (such as Fig.10When the fluid conductance needs to be increased, the side cone holes 33 can be selectively opened. When all the side cone holes 33 are in the open state, the fluid flow rate reaches the maximum (as shown in FIG. Fig.11 As shown), the side cone hole 33 can also be partially opened (as shown Fig.12 As shown), therefore, it can be adaptively adjusted according to the fluid type and the required measurement accuracy to improve the flexibility and adaptability of the measurement. The smaller the fluid conductivity, the greater the pressure loss, but the higher the measurement accuracy. The larger the fluid conductivity, the smaller the pressure loss, but the lower the measurement accuracy.

[0040] When the blocking component 31 is adjusted, the servo motor 37 is started, the servo motor 37 drives the screw rod 38 to rotate, the screw rod 38 drives the threaded sleeve 40 to move, the threaded sleeve 40 drives the blocking plate 39 to move, and the U-shaped limiting frame 36 is used to limit the blocking plate 39 to improve stability.

[0041] During operation, by setting up a first side pressure mechanism and a second side pressure mechanism consisting of a first pressure-taking tube, a second pressure-taking tube, a first condenser, a second condenser, a first pressure measuring tube, a second pressure measuring tube and a differential pressure transmitter, and setting up a plurality of high-pressure side pressure-taking holes and a plurality of low-pressure side pressure-taking holes, it is possible to measure the pressure at different positions of the flow meter body, which can improve the accuracy of detection, and by comparing the measured data, it is possible to promptly determine whether the flow meter is working abnormally. Since the flow meter body itself does not require any energy, only the first side pressure mechanism and the second side pressure mechanism require a small amount of electrical energy, so low-energy consumption measurement can be achieved. By setting up a conducting tube, a conducting valve, the first side pressure mechanism and the second side pressure mechanism A drain pipe, a second drain pipe and a drain valve can regularly clean the residual liquid inside the first pressure measuring tube and the second pressure measuring tube to maintain cleanliness; by setting a combined plate body composed of a mounting sleeve, an orifice plate and a plurality of sealing components, and setting a central cone hole and multiple side cone holes, standard measurement can be achieved through the central cone hole, and extended measurement can be achieved by controlling the opening of a corresponding number of side cone holes, thereby improving the adaptability range; by setting a sealing component composed of a U-shaped limit frame, a servo motor, a screw rod, a sealing plate and a threaded sleeve, the side cone holes can be sealed, the working state of the side cone holes can be controlled, and the flexibility of adjustment can be improved.

Claims

1. A low-energy-consumption and high-precision plate-type flowmeter structure, comprising a flowmeter body (1), a first side pressure mechanism (2) and a second side pressure mechanism (3), characterized in that: The first side pressure mechanism (2) and the second side pressure mechanism (3) are both connected to the flow meter body (1). The flow meter body (1) is composed of a combined plate body (4), a first pressure-resistant tube (5) and a second pressure-resistant tube (6). The combined plate body (4) is connected between the first pressure-resistant tube (5) and the second pressure-resistant tube (6). The first and second pressure-resistant tubes (5) are respectively fixedly provided with a first flange (7) and a second flange (8). The second and second pressure-resistant tubes (6) are respectively fixedly provided with a third flange (9) and a fourth flange (10). The combined plate body (4) is fixedly connected between the second and third flanges (8) by a plurality of bolt groups (11).

2. A low energy consumption and high precision plate type flow meter structure according to claim 1, characterized in that: A sealing gasket 1 (12) is provided between the combined plate body (4) and the second flange (8), and a sealing gasket 2 (13) is provided between the combined plate body (4) and the third flange (9).

3. A low energy consumption and high precision plate type flow meter structure according to claim 1, characterized in that: The side edge of the first pressure-resistant tube (5) is provided with a plurality of high-pressure side pressure holes (14) matching the first side pressure mechanism (2) and the second side pressure mechanism (3), and the side edge of the second pressure-resistant tube (6) is provided with a plurality of low-pressure side pressure holes (15) matching the first side pressure mechanism (2) and the second side pressure mechanism (3).

4. A low energy consumption and high precision plate type flow meter structure according to claim 3, characterized in that: The first side pressure mechanism (2) and the second side pressure mechanism (3) are both composed of a first pressure-taking tube (16), a second pressure-taking tube (17), a first condenser (18), a second condenser (19), a first pressure-measuring tube (20), a second pressure-measuring tube (21) and a differential pressure transmitter (22); the first pressure-taking tube (16) and the second pressure-measuring tube (17) are respectively fixedly connected to the high-pressure side pressure-taking hole (14) and the low-pressure side pressure-measuring hole (15); a pressure-taking valve (23) is provided on the first pressure-measuring tube (16) and the second pressure-measuring tube (17); the first pressure-measuring tube (20) is connected to the first pressure-measuring tube (16) via the first condenser (18); the second pressure-measuring tube (21) is connected to the second pressure-measuring tube (17) via the second condenser (19); and the differential pressure transmitter (22) is respectively connected to the first pressure-measuring tube (20) and the second pressure-measuring tube (21).

5. A low energy consumption and high precision plate type flow meter structure according to claim 4, characterized in that: A conducting pipe (24) is fixedly arranged between the first pressure-taking pipe (16) and the second pressure-taking pipe (17), and a conducting valve (25) is arranged on the conducting pipe (24); a first discharge pipe (26) is fixedly arranged at the bottom end of the side of the first pressure-measuring pipe (20), and a second discharge pipe (27) is fixedly arranged at the bottom end of the side of the second pressure-measuring pipe (21); and discharge valves (28) are arranged on both the first discharge pipe (26) and the second discharge pipe (27).

6. A low energy consumption and high precision plate type flow meter structure according to claim 1, characterized in that: The combined plate body (4) is composed of a mounting sleeve (29), a perforated plate (30) and a plurality of plugging components (31); the perforated plate (30) is welded to the inside of the mounting sleeve (29); and the plugging components (31) are inserted and connected to the mounting sleeve (29) and matched with the perforated plate (30).

7. A low energy consumption and high precision plate type flow meter structure according to claim 6, characterized in that: A central conical hole (32) is provided at the center of the orifice plate (30), and a plurality of side conical holes (33) matching the blocking components (31) are provided on the side of the orifice plate (30).

8. The low energy consumption and high precision plate type flow meter structure according to claim 6 is characterized in that: The side welding arrangement inside the installation sleeve (29) comprises a plurality of reinforcing beams (34) matching the orifice plate (30); the installation sleeve (29) is provided with a plurality of bolt installation holes (35) matching the bolt group (11); the bolt installation holes (35) are staggered with the blocking assembly (31).

9. A low energy consumption and high precision plate type flow meter structure according to claim 7, characterized in that: The blocking assembly (31) is composed of a U-shaped limit frame (36), a servo motor (37), a screw rod (38), a blocking plate (39) and a threaded sleeve (40); the U-shaped limit frame (36) is inserted and connected to the inside of the mounting sleeve (29); the servo motor (37) is fixedly connected to the arc-shaped outer surface of the mounting sleeve (29); the screw rod (38) is fixedly connected to the output shaft of the servo motor (37) and is inserted into the mounting sleeve (29) and the U-shaped limit frame (36); the blocking plate (39) is slidably connected to the inside of the U-shaped limit frame (36) and matches the side tapered hole (33); and the threaded sleeve (40) is fixedly connected to the inside of the blocking plate (39) and is sleeved on the screw rod (38).

10. A low energy consumption and high precision plate type flow meter structure according to claim 9, characterized in that: The screw rod (38) and the mounting sleeve (29) are rotatably connected via a shaft seal (41); a limiting slide groove 1 (42) and a limiting slide groove 2 (43) matching the sealing plate (39) are respectively provided on both sides of the U-shaped limiting frame (36); and a limiting slide block 1 (44) and a limiting slide block 2 (45) slidably connected to the limiting slide groove 1 (42) and the limiting slide groove 2 (43) are respectively fixedly provided on both sides of the sealing plate (39).

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