A flowmeter for curved pipes

Abstract

The utility model discloses a bend flowmeter, including bend flowmeter body, the elbow position of bend flowmeter body position still is equipped with detection assembly, the both ends position of bend flowmeter body are fixed with the butt joint pipe, the one side position of bend flowmeter body still rotationally arranged rotatory screw rod, and the bottom position rotationally arranged in horizontal plane position of rotatory screw rod, the outside position of rotatory screw rod still is equipped with the connecting sleeve of screw connection. This bend flowmeter, through the height of bend flowmeter of auxiliary installation mechanism adjustment, can flexible adaptation pipeline butt joint demand under different installation scene, avoids the problem of forced welding or hard connection caused by pipeline height deviation, can reduce the labor input when installing, can also reduce the pipeline deformation or sealing failure risk caused by installation stress, thereby improves installation efficiency and guarantees the stability of flowmeter long -term operation.

Description

Technical Field

[0001] This utility model relates to the technical field of flow meters, specifically a bent-tube flow meter. Background Technology

[0002] Like traditional orifice plate flow meters, elbow flow meters belong to the category of differential pressure flow meters. However, the way elbow flow meters generate differential pressure differs from orifice plate flow meters. Orifice plate flow meters generate differential pressure using the principle of fluid expansion and contraction, while elbow flow meters generate differential pressure using the principle of fluid inertia. Elbow flow meters inherit the advantages of differential pressure flow meters, such as simple structure, stable performance, and accurate measurement, while overcoming the disadvantages of differential pressure flow meters, such as large pressure loss, easy clogging, and difficult maintenance. With its outstanding energy-saving effect, high stability, high accuracy, and high adaptability, elbow flow meters are rapidly being promoted in the measurement of media such as steam, coal gas, natural gas, hot and cold water, oil, air, ethylene, hydrogen sulfide, and carbon dioxide two-phase flow in the thermal, thermoelectric, metallurgical, and petrochemical industries.

[0003] There are many types of existing bent-tube flow meters. Bent-tube flow meters not only affect the accuracy of flow measurement, but also cause fatigue damage to the bent tube and insufficient sealing. To solve the above problems, we can refer to the prior art (Chinese patent application number CN202420029131.1, application date 2024-01-05) which discloses a bent-tube flow meter. This bent-tube flow meter has two flow-inlet tubes on one side of the metal bend, and a pressure sampling port on one side of the two flow-inlet tubes to facilitate the observation of the pressure inside the metal bend. Temperature sensors and pressure sensors are also set on one side of the metal bend to monitor the conditions inside the metal bend, and the data can be viewed on the display screen of the recorder.

[0004] Although the above-mentioned devices can facilitate flow measurement and processing, they still have some shortcomings in actual use. First, most of the bent-tube flow meters are welded installations, which require two or more people to help each other to ensure correct installation. This is a waste of labor resources and results in low work efficiency.

[0005] Therefore, we proposed that the bent-tube flow meter can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a bent tube flow meter to solve the problem mentioned in the background art that most bent tube flow meters on the market are currently installed by welding. During welding installation, two or more people need to help each other to ensure correct installation, which is a waste of labor resources and has low work efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bent-tube flow meter, comprising a bent-tube flow meter body, a detection component installed at the bend of the bent-tube flow meter body, and connecting pipes fixed at both ends of the bent-tube flow meter body; a rotating threaded rod is rotatably provided on one side of the bent-tube flow meter body, and the bottom of the rotating threaded rod is rotatably positioned in a horizontal plane; a connecting sleeve is threadedly connected to the outer side of the rotating threaded rod; an auxiliary installation mechanism is provided on the outer side of the connecting sleeve; the auxiliary installation mechanism allows for height adjustment of the bent-tube flow meter body in the horizontal plane; the auxiliary installation mechanism also enables a sealing compensation mechanism to operate, achieving a high-seal connection between the connecting pipes and connecting pipes at both ends of the bent-tube flow meter body.

[0008] As a preferred technical solution of this application, the outer side of the connecting pipe is wrapped with a protective layer, which is a rubber buffer layer. The detection component includes a pressure sensor and a temperature sensor, and the detection component is electrically connected to the body of the bend flow meter.

[0009] As a preferred technical solution of this application, the auxiliary installation mechanism includes a rotating rod rotatably connected to the outer side of the connecting sleeve. The outer end of the rotating rod is rotatably disposed on the inner wall of the connecting shaft, and the rear side of the connecting shaft is fixed below the surface of the bent tube flow meter body. A movable rod is also fixed at the bottom of the connecting shaft, and the bottom outer side of the movable rod is slidably disposed inside the receiving rod.

[0010] As a preferred technical solution of this application, the bottom position of the receiving rod is fixed on a horizontal plane, and a piston block is also fixed at the bottom position of the moving rod. The outer wall of the piston block is attached to the inner wall of the receiving rod, and the bottom position of the piston block is connected to the bottom position of the receiving rod through a connecting spring.

[0011] As a preferred technical solution of this application, the sealing compensation mechanism includes an air supply pipe connected to the outer side of the bottom of the receiving rod. The top of the air supply pipe extends into the bottom of the connecting pipe, and the outer end of the air supply pipe is provided with several sets of air ports. The outer end of the connecting pipe is also connected to one side of the connecting pipe via a flange.

[0012] As a preferred technical solution of this application, a valve is also provided on the outer side of the middle end of the gas transmission pipe, and the size of the connecting pipe is the same as that of the connecting pipe. The connecting pipe forms a negative pressure fitting structure with the gas port through air pressure, and the gas transmission pipe is made of rubber hose.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By adjusting the height of the bend flow meter through the auxiliary installation mechanism, it can flexibly adapt to the pipe connection requirements under different installation scenarios, avoiding the problems of forced welding or rigid connection caused by pipe height deviation. This can reduce the labor input during installation and reduce the risk of pipe deformation or sealing failure caused by installation stress, thereby improving installation efficiency and ensuring the long-term stability of the flow meter.

[0014] 2. The gas supply pipe in the sealing compensation mechanism is made of rubber hose, which has good flexibility. When the height of the bend is adjusted or there is slight displacement, it can adapt to the slight changes in the installation position through its own deformation, reducing the installation stress caused by rigid connection. The negative pressure bonding structure can use the air pressure difference to make the two tightly bonded after the butt pipe and the connecting pipe flange are connected, further enhancing the sealing effect and eliminating the problem of media leakage.

[0015] 3. The protective layer wrapped around the outside of the connector can effectively absorb the vibration and external impact generated during fluid transportation, reduce fatigue damage to the bend caused by long-term vibration, and at the same time provide physical protection for the internal detection components, reducing the interference of external factors on the measuring elements, thereby extending the overall service life of the flow meter. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a side view of the main body of the bend tube flowmeter of this utility model; Figure 4 This is a schematic diagram of the main structure of the rotating threaded rod of this utility model; Figure 5 This is a schematic diagram of the main cross-sectional structure of the receiving rod of this utility model; Figure 6 This is a schematic diagram of the butt joint structure of this utility model.

[0017] In the diagram: 1. Bent pipe flowmeter body; 2. Detection component; 3. Connecting pipe; 4. Protective layer; 5. Rotating threaded rod; 6. Connecting sleeve; 7. Rotating rod; 8. Connecting shaft; 9. Moving rod; 10. Receiving rod; 11. Piston block; 12. Connecting spring; 13. Gas supply pipe; 14. Gas port; 15. Connecting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-6 The present invention provides the following technical solution: a bend pipe flow meter.

[0020] Example 1: To address the issue that most elbow flow meters on the market are currently installed by welding, requiring two or more people to assist each other during installation to ensure correct placement, which is a waste of labor resources and results in low work efficiency, please refer to the attached... Figure 1 -Appendix Figure 5 The flow meter includes a curved pipe flow meter body 1, a detection component 2 installed at the bend of the curved pipe flow meter body 1, and connecting pipes 3 fixed at both ends of the curved pipe flow meter body 1. A rotating threaded rod 5 is rotatably mounted on one side of the curved pipe flow meter body 1, with its bottom rotatably positioned horizontally. A connecting sleeve 6 is threadedly connected to the outer side of the rotating threaded rod 5, and an auxiliary installation mechanism is provided on the outer side of the connecting sleeve 6. This auxiliary installation mechanism allows for height adjustment of the curved pipe flow meter body 1 in the horizontal position. A protective layer 4, which is a rubber buffer layer, is wrapped around the outside of the connecting pipe 3. The detection component 2 includes a pressure sensor and a temperature sensor. The measuring component 2 is electrically connected to the elbow flowmeter body 1; the auxiliary installation mechanism includes a rotating rod 7 rotatably connected to the outer side of the connecting sleeve 6, the outer end of the rotating rod 7 is rotatably set on the inner wall of the connecting shaft 8, and the rear side of the connecting shaft 8 is fixed below the surface of the elbow flowmeter body 1. A moving rod 9 is also fixed at the bottom of the connecting shaft 8, and the outer side of the bottom of the moving rod 9 is slidably set inside the receiving rod 10; the bottom of the receiving rod 10 is fixed on the horizontal plane, and a piston block 11 is also fixed at the bottom of the moving rod 9. The outer wall of the piston block 11 is attached to the inner wall of the receiving rod 10, and the bottom of the piston block 11 is connected to the bottom of the receiving rod 10 through a connecting spring 12.

[0021] Before docking, the gas supply pipe 13 can be closed by valve. During the docking process of the bent flow meter body 1, the rotating threaded rod 5 on the horizontal plane is rotated. This rotation of the threaded rod 5 can drive the threaded connecting sleeve 6 to move in height. The connecting sleeve 6 will rotate the outer side of the threaded rod 5 to adjust the height. At this time, the connecting sleeve 6 can drive the rotating rod 7 to move, which in turn can drive the connecting shaft 8 and the bent flow meter body 1 to adjust their positions. The moving rod 9 fixed at the bottom of the connecting shaft 8 will also move inside the receiving rod 10, thereby allowing the bent flow meter body 1 to be adjusted in height, thus facilitating normal installation.

[0022] Example 2: To facilitate the connection of the bend flow meter with the connecting pipe 15, please refer to the attached diagram. Figure 1 Appendix Figure 2 Appendix Figure 5 and attached Figure 6 The auxiliary installation mechanism can also realize the operation of the sealing compensation mechanism, so as to realize the high-sealing connection between the connecting pipe 3 and the connecting pipe 15 set at both ends of the curved flow meter body 1. The sealing compensation mechanism includes the air supply pipe 13 connected to the bottom outer side of the receiving rod 10. The top of the air supply pipe 13 extends into the bottom end of the connecting pipe 3, and several sets of air ports 14 are opened inside the outer end of the air supply pipe 13. The outer end of the connecting pipe 3 is also connected to one side of the connecting pipe 15 through a flange. A valve is also set on the outer side of the middle end of the air supply pipe 13. The size of the connecting pipe 15 is the same as that of the connecting pipe 3. The connecting pipe 3 forms a negative pressure fitting structure with the air ports 14 through air pressure. The material of the air supply pipe 13 is a rubber hose.

[0023] When the connecting pipe 15 and the connecting pipe 3 are installed together, the connecting pipe 15 is connected to one side of the connecting pipe 3 through a flange, so that the connecting pipe 15 fits tightly against one side of the connecting pipe 3. By loosening the valve of the gas supply pipe 13, the negative pressure generated during the sliding of the moving rod 9 and the piston block 11 inside the receiving rod 10 will also adsorb one side of the connecting pipe 15, thereby ensuring a stable connection effect between the connecting pipe 15 and the connecting pipe 3.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bend flow meter, comprising a bend flow meter body (1), wherein a detection component (2) is installed at the bend of the bend flow meter body (1), and connecting pipes (3) are fixed at both ends of the bend flow meter body (1). Its features are, A rotating threaded rod (5) is rotatably provided on one side of the body (1) of the bent pipe flow meter, and the bottom of the rotating threaded rod (5) is rotatably provided on the horizontal plane. A connecting sleeve (6) is threadedly connected to the outer side of the rotating threaded rod (5). An auxiliary installation mechanism is provided on the outer side of the connecting sleeve (6). The auxiliary installation mechanism can realize the height adjustment of the body (1) of the bent pipe flow meter in the horizontal plane. The auxiliary installation mechanism can also realize the operation of the sealing compensation mechanism, so as to realize the high-sealing connection between the connecting pipe (3) and the connecting pipe (15) at both ends of the body (1) of the bent pipe flow meter.

2. The bend-pipe flow meter according to claim 1, characterized in that: The outer side of the connecting pipe (3) is covered with a protective layer (4), which is a rubber buffer layer. The detection component (2) includes a pressure sensor and a temperature sensor. The detection component (2) is electrically connected to the body (1) of the bend flow meter.

3. The bend-pipe flow meter according to claim 1, characterized in that: The auxiliary installation mechanism includes a rotating rod (7) rotatably connected to the outer side of the connecting sleeve (6). The outer end of the rotating rod (7) is rotatably disposed on the inner wall of the connecting shaft (8), and the rear side of the connecting shaft (8) is fixed below the surface of the curved flow meter body (1). A moving rod (9) is also fixed at the bottom of the connecting shaft (8), and the bottom outer side of the moving rod (9) is slidably disposed inside the receiving rod (10).

4. A bend-pipe flow meter according to claim 3, characterized in that: The bottom position of the receiving rod (10) is fixed on the horizontal plane, and the bottom position of the moving rod (9) is also fixed with a piston block (11). The outer wall of the piston block (11) is attached to the inner wall of the receiving rod (10), and the bottom position of the piston block (11) is connected to the bottom position of the receiving rod (10) through a connecting spring (12).

5. A bend-pipe flow meter according to claim 1, characterized in that: The sealing compensation mechanism includes an air supply pipe (13) connected to the outer side of the bottom of the receiving rod (10). The top of the air supply pipe (13) extends into the bottom of the connecting pipe (3), and the outer end of the air supply pipe (13) is provided with several sets of air ports (14). The outer end of the connecting pipe (3) is also connected to one side of the connecting pipe (15) through a flange.

6. A bend-pipe flow meter according to claim 5, characterized in that: A valve is also provided on the outer side of the middle end of the gas supply pipe (13), and the size of the connecting pipe (15) is the same as that of the connecting pipe (3). The connecting pipe (3) forms a negative pressure fitting structure with the air port (14) through air pressure. The gas supply pipe (13) is made of rubber hose.

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