Low-pressure-loss runner mass flow meter

Abstract

The utility model discloses a low pressure loss runner mass flow meter which comprises a mass flow meter body, a first conveying pipeline and a second conveying pipeline, and first flanges are fixedly installed at the left end and the right end of the mass flow meter body respectively. The side faces, away from each other, of the two first flanges are each provided with a first annular groove and a second annular groove, and the ends, close to each other, of the first conveying pipeline and the second conveying pipeline are each fixedly provided with a second flange. According to the device, a third annular groove and a fourth annular groove are formed in the outer surface of each second flange, so that after the first flange and the second flanges are connected together, the first annular groove and the third annular groove as well as the second annular groove and the fourth annular groove can clamp the first annular pad and the second annular pad respectively; therefore, the sealing performance of the joints of the mass flow meter body, the first conveying pipeline and the second conveying pipeline can be improved, and the metering accuracy of the mass flow meter body is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mass flow meter technology, and in particular to a low-pressure-loss flow channel mass flow meter. Background Technology

[0002] Pressure loss in pipelines is generally classified into three types: friction loss, local pressure loss, and head loss. Friction loss and head loss can be reduced by increasing surface roughness and decreasing head difference, respectively. When fluid flows in a pipeline, pressure loss occurs due to friction with the pipe wall and internal friction of the fluid itself. This type of pressure loss is called local loss.

[0003] Most existing mass flow meters have simple installation structures, and the load on the flow meter itself leads to poor sealing during use, which can easily cause leakage and affect the measurement accuracy of the mass flow meter. To address this issue, we propose a low-pressure-loss flow channel mass flow meter. Utility Model Content

[0004] The purpose of this invention is to provide a low-pressure-loss flow channel mass flow meter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A low-pressure-loss flow channel mass flow meter includes a mass flow meter body, a first conveying pipe, and a second conveying pipe. A first flange is fixedly installed at the left end and the right end of the mass flow meter body. A first annular groove and a second annular groove are formed on the side of the two first flanges that are far apart from each other. A second flange is fixedly installed at the end of the first conveying pipe and the second conveying pipe that are close to each other. A third annular groove and a fourth annular groove are formed on the side of the two second flanges that are close to each other.

[0007] In a further embodiment, a first annular pad is installed on the inner wall of the first annular groove and the inner wall of the third annular groove, and a second annular pad is installed on the inner wall of the second annular groove and the inner wall of the fourth annular groove.

[0008] In a further embodiment, each of the first flanges has a plurality of annularly arranged first mounting holes on its outer surface, and each of the second flanges has a plurality of annularly arranged second mounting holes on its outer surface.

[0009] In a further embodiment, the inner diameter of each of the first mounting holes is the same as the inner diameter of the second mounting hole, and the first annular gasket and the second annular gasket have the same specifications.

[0010] In a further embodiment, the mass flow meter body is provided with two sets of bolts on the outside, one end of each bolt passing through the first mounting hole and the second mounting hole and extending to the outside of the second flange.

[0011] In a further embodiment, a fastening nut is threaded onto the outer surface of one end of each bolt, and each fastening nut is an anti-loosening nut.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device installs a first flange on each of the left and right sides of the mass flow meter body, and creates a first annular groove and a second annular groove on the outer surface of each first flange. This allows the operator to place the first annular gasket and the second annular gasket into the first annular groove and the second annular groove, respectively. By installing a second flange at one end of the first conveying pipe and one end of the second conveying pipe, and creating a third annular groove and a fourth annular groove on the outer surface of each second flange, when the first flange and the second flange are connected together, the first and third annular grooves, as well as the second and fourth annular grooves, can clamp the first and second annular gaskets, respectively. This improves the sealing at the connection between the mass flow meter body and the first and second conveying pipes, thereby ensuring the accuracy of the mass flow meter measurement. Attached Figure Description

[0014] Figure 1 This is a front view of a low-pressure-loss flow channel mass flow meter.

[0015] Figure 2 This is a top sectional view of the first flange in a low-pressure-loss flow channel mass flow meter.

[0016] Figure 3 This is a cross-sectional view of the first flange in a low-pressure-loss flow channel mass flow meter.

[0017] Figure 4 for Figure 2 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. First conveying pipe; 2. Fastening nut; 3. First flange; 4. Mass flow meter body; 5. Bolt; 6. Second flange; 7. Second conveying pipe; 8. Second mounting hole; 9. First mounting hole; 10. Third annular groove; 11. First annular gasket; 12. First annular groove; 13. Second annular gasket; 14. Fourth annular groove; 15. Second annular groove. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] 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.

[0022] Please see Figure 1-4In this utility model, a low-pressure-loss flow channel mass flow meter includes a mass flow meter body 4, a first conveying pipe 1, and a second conveying pipe 7. A first flange 3 is fixedly installed at both the left and right ends of the mass flow meter body 4. A first annular groove 12 and a second annular groove 15 are formed on the sides of the two first flanges 3 that are far apart from each other. A second flange 6 is fixedly installed at the ends of the first conveying pipe 1 and the second conveying pipe 7 that are close to each other. A third annular groove 10 and a fourth annular groove 14 are formed on the sides of the two second flanges 6 that are close to each other. A first annular gasket 11 is installed on the inner wall of the first annular groove 12 and the inner wall of the third annular groove 10. A second annular gasket 13 is installed on the inner wall of the second annular groove 15 and the inner wall of the fourth annular groove 14. The mass flow meter body 4 is constructed by installing a first flange 3 at each of its left and right ends, and by attaching a first flange 3 to one end of the first conveying pipe 1 and one end of the second conveying pipe 7. Each of the two flanges 6 is installed, allowing the mass flow meter body 4 to be connected to the first conveying pipe 1 and the second conveying pipe 7 later. After assembling the two first flanges 3 with the two second flanges 6 respectively, the first annular groove 12 and the third annular groove 10 can jointly clamp the first annular gasket 11, and the second annular groove 15 and the fourth annular groove 14 can jointly clamp the second annular gasket 13. Through the cooperation of the first annular gasket 11 and the second annular gasket 13, the gap at the connection between the first flange 3 and the second flange 6 can be completely sealed, thereby effectively reducing the probability of leakage and improving the measurement accuracy of the mass flow meter body 4. The mass flow meter body 4 is a Coriolis mass flow sensor. The internal structure of the mass flow meter body 4 includes a measuring tube, an exciter, and two sensors. Its working principle is the same as that of mass flow meters on the market. The inner wall of the measuring tube needs to be smooth to improve the accuracy of the measurement results.

[0023] Each first flange 3 has several annularly arranged first mounting holes 9 on its outer surface, and each second flange 6 has several annularly arranged second mounting holes 8 on its outer surface. The inner diameter of each first mounting hole 9 is the same as the inner diameter of each second mounting hole 8. The first annular gasket 11 and the second annular gasket 13 are of the same specifications. Two sets of bolts 5 are provided on the outside of the mass flow meter body 4. One end of each bolt 5 passes through the first mounting hole 9 and the second mounting hole 8 and extends to the outside of the second flange 6. A fastening nut 2 is threaded onto the outer surface of one end of each bolt 5. Each fastening nut 2 is an anti-loosening nut. By setting the first annular gasket 11 and the second annular gasket 13 to the same specifications, the installation efficiency of the device can be improved by the workers. The bolts 5 and the fastening nuts 2 are both made of stainless steel. By passing one end of each bolt 5 through the first mounting hole 9 and the second mounting hole 8 respectively and threadedly connecting it with the fastening nut 2, the first flange 3 and the second flange 6 can be firmly assembled together. This allows the inner wall of the first annular groove 12 and the third annular groove 10 to tightly squeeze the first annular gasket 11, and the inner wall of the second annular groove 15 and the fourth annular groove 14 to tightly squeeze the second annular gasket 13.

[0024] The working principle of this utility model is as follows:

[0025] First, the workers place the first annular gasket 11 and the second annular gasket 13 into the first annular groove 12 and the second annular groove 15, respectively. Then, the workers align the first mounting holes 9 on the outer surfaces of the two first flanges 3 with the second mounting holes 8 on the outer surfaces of the two second flanges 6. Then, the workers pass one end of the bolt 5 through the first mounting hole 9 and the second mounting hole 8 in sequence. Finally, the workers use tools to thread the fastening nut 5 to the bolt 2.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A low-pressure-loss flow channel mass flow meter, characterized in that: The device includes a mass flow meter body (4), a first conveying pipe (1) and a second conveying pipe (7). A first flange (3) is fixedly installed on the left end and the right end of the mass flow meter body (4). A first annular groove (12) and a second annular groove (15) are opened on the side of the two first flanges (3) that are far apart from each other. A second flange (6) is fixedly installed on the side of the first conveying pipe (1) and the second conveying pipe (7) that are close to each other. A third annular groove (10) and a fourth annular groove (14) are opened on the side of the two second flanges (6) that are close to each other.

2. The low pressure loss flow channel mass flow meter according to claim 1, characterized in that: The inner wall of the first annular groove (12) and the inner wall of the third annular groove (10) are jointly equipped with a first annular pad (11), and the inner wall of the second annular groove (15) and the inner wall of the fourth annular groove (14) are jointly equipped with a second annular pad (13).

3. The low pressure loss flow channel mass flow meter according to claim 2, characterized in that: Each of the first flanges (3) has a plurality of annularly arranged first mounting holes (9) on its outer surface, and each of the second flanges (6) has a plurality of annularly arranged second mounting holes (8) on its outer surface.

4. The low pressure loss flow channel mass flow meter according to claim 3, characterized in that: The inner diameter of each of the first mounting holes (9) is the same as the inner diameter of the second mounting hole (8), and the first annular gasket (11) and the second annular gasket (13) have the same specifications.

5. The low pressure loss flow channel mass flow meter according to claim 1, characterized in that: The mass flow meter body (4) has two sets of bolts (5) on its exterior. One end of each bolt (5) passes through the first mounting hole (9) and the second mounting hole (8) and extends to the exterior of the second flange (6).

6. The low pressure loss flow channel mass flow meter according to claim 5, characterized in that: Each bolt (5) has a threaded fastening nut (2) on one end of its outer surface, and each fastening nut (2) is an anti-loosening nut.

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