Elbow flowmeter

Abstract

The utility model relates to the technical field of flow meters, in particular to an elbow flow meter which comprises a flow meter protection device, the flow meter protection device comprises a first pipeline and a second pipeline, the circumferential side faces of the first pipeline and the second pipeline are movably connected with sponge protection sleeves, and fixing devices are arranged on the sponge protection sleeves. Through the upper fastening piece, the lower fastening piece, the connecting piece, the first fixing bolt, the circular ring, the circular rod, the circular hollow barrel, the threaded groove, the supporting pier, the base and the second fixing bolt in the fixing device, the situation that errors are increased due to installation errors of the elbow flow meter is reduced, the accuracy and reliability of installation of the elbow flow meter are guaranteed, the working efficiency is improved, and the labor intensity of workers is lowered. And when a user does not need to use the fixing device, the fixing device can be detached, and the fixing device can be repeatedly used by the user.

Description

Technical Field

[0001] The utility model relates to the technical field of flow meters, in particular to a curved pipe flow meter. Background Art

[0002] The elbow flowmeter can measure various fluid media such as liquid, steam, gas, etc. Liquids include: cold water, hot water, sewage, gasoline, diesel, kerosene, residual oil, liquid ammonia, liquid benzene, liquid bromine, etc.; steam includes: saturated steam, superheated steam; gas includes: blast furnace gas, coke oven gas, mixed gas, air, hydrogen, nitrogen, oxygen, carbon monoxide, carbon dioxide, acetylene, natural gas, etc. The elbow flowmeter can be divided into L type and S type according to the installation method.

[0003] A Chinese patent discloses a curved pipe flow meter (authorization announcement number CN 2630804Y). This patented technology saves space and is beautiful, while minimizing pipeline pressure loss. It is a curved pipe flow meter installed on a pipeline and uses fluid mechanics principles to measure the flow rate of fluid in the pipeline. However, most traditional curved pipe flow meters are welded installations, and two or more people are required to help each other during welding installation to ensure correct installation. This is a great waste of labor resources and has low work efficiency. In addition, during the long-term transportation process, scale will accumulate inside the curved pipe. When accumulated to a certain amount, it will affect the detection accuracy of the sensor. When checking the scale, the curved pipe needs to be disassembled for inspection, and the inspection steps are relatively cumbersome.

[0004] Therefore, those skilled in the art provide a curved pipe flowmeter to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a curved pipe flowmeter, including a flowmeter protection device, the flowmeter protection device includes a pipe 1 and a pipe 2, the circumferential side surfaces of the pipe 1 and the pipe 2 are movably connected with a sponge protection sleeve, a fixing device is arranged on the sponge protection sleeve, the fixing device includes an upper fastener, a lower fastener, a connecting piece, a fixing bolt 1, a circular ring, a circular rod, a circular hollow barrel, a threaded groove, a supporting pier and a fixing bolt 2, two connecting pieces are arranged on both sides of the upper fastener and the lower fastener, the two connecting pieces are fastened and connected by the fixing bolt 1, a circular ring is arranged at the lower end of the lower fastener, a circular rod is slidably connected with the inner wall of the circular ring, a threaded groove is opened on the circumferential side surface of the circular rod, a circular hollow barrel is threadedly connected through the circumferential side surface of the threaded groove, a supporting pier is fixedly connected with the lower surface of the circular hollow barrel, and the sponge protection sleeve can also reduce the impact force and protect the tight parts inside the pipe 1 and the pipe 2;

[0006] A first internal measuring mechanism and a second internal measuring mechanism are fixed on both sides of pipeline one and pipeline two, respectively, wherein the first internal measuring mechanism includes a first branch pipe, a first ball valve and a first distance sensor, one end of the first ball valve is coaxially fixed to the first branch pipe, the first distance sensor is coaxially fixed to the other end of the first ball valve, and the first branch pipe is fixed on pipeline one, and the second internal measuring mechanism includes a second branch pipe, a second ball valve and a second distance sensor, one end of the second ball valve is coaxially fixed to the second branch pipe, the second distance sensor is coaxially fixed to the other end of the second ball valve, and the second branch pipe is fixed on pipeline two.

[0007] Preferably: handles are fixed on the pipe 1 and the pipe 2, inner sides of the pipe 1 and the pipe 2 are provided with inner pressure holes with a hole diameter of 20-24 mm, and outer sides of the inner and outer sides of the pipe 1 and the pipe 2 are provided with outer pressure holes with a hole diameter of 20-24 mm.

[0008] Preferably: the inner pressure-taking hole and the outer pressure-taking hole are located on the same axis, the inner pressure-taking hole and the outer pressure-taking hole are respectively connected to the differential pressure transmitter through pressure-conducting pipes, the pressure-conducting pipes include pressure-taking bodies respectively connected to the outer pressure-taking hole and the inner pressure-taking hole, one end of the pressure-taking body is connected to the pressure-conducting pipe through a three-way stopcock, and the other end is respectively connected to the outer pressure through a moisture and ash accumulation mechanism, the pressure-conducting pipe is provided with a moisture and ash accumulation mechanism capable of intercepting moisture and ash, a back-blowing port is opened on the pressure-conducting pipe, when blocked, the back-blowing port is connected to the back-blowing dredging mechanism, a strong vortex is formed when the coal gas passes through the 90° elbow, and it is difficult for impurities to accumulate there.

[0009] Technical effects and advantages of the utility model:

[0010] 1. The utility model reduces the error of the elbow flow meter due to installation errors by arranging the upper fastener, the lower fastener, the connecting piece, the fixing bolt 1, the circular ring, the circular rod, the circular hollow barrel, the threaded groove, the supporting pier, the base and the fixing bolt 2 in the fixing device, ensures the accuracy and reliability of the installation, improves the work efficiency, reduces the shaking of the pipeline, and increases the stability of the entire pipeline. When the user does not need to use the fixing device, the fixing device can be disassembled so that the user can reuse it.

[0011] 2. The utility model sends out an ultrasonic detection signal through the first internal measurement mechanism, the first branch pipe, the first ball valve, the first distance sensor, the second internal measurement mechanism, the second branch pipe, the second ball valve, and the second distance sensor, which is transmitted to the inner wall of the inner circle of pipes one and two via the second ball valve and the second branch pipe, detects the change in the distance between the second distance sensor and the measuring elbow, calculates the thickness of the scale there, and determines whether the scale affects the detection of the elbow sensor through the thickness of the scale, thereby determining whether the scale needs to be cleaned. During inspection, there is no need to disassemble the measuring elbow, and the operation is relatively convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a curved pipe flow meter provided in an embodiment of the present application. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of a curved pipe flow meter provided in an embodiment of the present application. Figure 2 ;

[0014] Figure 3 This is a schematic diagram of the structure of a curved pipe flow meter provided in an embodiment of the present application. Figure 3 ;

[0015] Figure 4 It is a structural schematic diagram of a fixing device in a curved pipe flow meter provided in an embodiment of the present application;

[0016] Figure 5 This is a curved pipe flow meter provided in the embodiment of the present application Figure 4 The structural diagram at A in the middle;

[0017] Figure 6 This is a curved pipe flow meter provided in the embodiment of the present application Figure 1 Schematic diagram of the structure at B in the figure.

[0018] In the figure: 1, flow meter protection device; 2, handle; 3, pipe 1; 4, pipe 2; 5, fixing device; 51, upper fastener; 52, lower fastener; 53, connecting piece; 54, fixing bolt 1; 55, circular ring; 56, circular rod; 57, circular hollow barrel; 58, threaded groove; 59, supporting pier; 60, base; 61, fixing bolt 2;

[0019] 7. Sponge protective cover; 8. First internal measuring mechanism; 81. First branch pipe; 82. First ball valve; 83. First distance sensor; 9. Second internal measuring mechanism; 91. Second branch pipe; 92. Second ball valve; 93. Second distance sensor;

[0020] 10. Internal pressure taking hole; 11. External pressure taking hole; 12. Differential pressure transmitter; 13. Backblowing port; 14. Pressure taking body; 15. Pressure guiding pipe; 16. Three-way plug valve. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The implementation of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0022] Example 1

[0023] See also Figures 1 to 6 In this embodiment, a curved pipe flowmeter is provided, including a flowmeter protection device 1, the flowmeter protection device 1 includes a pipe 1 3 and a pipe 2 4, a handle 2 is fixed on the pipe 1 3 and the pipe 2 4, a sponge protection cover 7 is movably connected to the circumferential side of the pipe 1 3 and the pipe 2 4, and a fixing device 5 is provided on the sponge protection cover 7, and the fixing device 5 includes an upper fastener 51, a lower fastener 52, a connecting piece 53, a fixing bolt 1 54, a circular ring 55, a circular rod 56, a circular hollow barrel 57, a threaded groove 58, Support pier 59 and fixing bolt 2 61, two connecting pieces 53 are arranged on both sides of the upper fastener 51 and the lower fastener 52, and the two connecting pieces 53 are fastened and connected by fixing bolt 1 54, and a circular ring 55 is arranged at the lower end of the lower fastener 52, and a circular rod 56 is slidably connected to the inner wall of the circular ring 55, and a thread groove 58 is opened on the circumferential side of the circular rod 56, and a circular hollow barrel 57 is threadedly connected to the circumferential side of the thread groove 58, and the lower surface of the circular hollow barrel 57 is fixedly connected to the support pier 59, and a sponge protective cover

[0024] 7 can also reduce the impact force and protect the tight parts inside the pipe 1 3 and the pipe 2 4;

[0025] A first internal measuring mechanism 8 and a second internal measuring mechanism 9 are fixed on both sides of the pipeline 1 3 and the pipeline 2 4, respectively, wherein the first internal measuring mechanism comprises a first branch pipe 81, a first ball valve 82 and a first distance sensor 83, one end of the first ball valve 82 is coaxially fixed to the first branch pipe 81, the first distance sensor 83 is coaxially fixed to the other end of the first ball valve 82, the first branch pipe 81 is fixed to the pipeline 1 3, the second internal measuring mechanism comprises a second branch pipe 91, a second ball valve 92 and a second distance sensor 93, one end of the second ball valve 92 is coaxially fixed to the second branch pipe 91, the second distance sensor 93 is coaxially fixed to the other end of the second ball valve 92, and the second branch pipe 91 is fixed to the pipeline 2 4;

[0026] The inner side of the pipeline 13 and the pipeline 24 is provided with an inner pressure hole 10 with a hole diameter of 20-24 mm, and the inner and outer sides of the pipeline 13 and the pipeline 24 are provided with an outer pressure hole 11 with a hole diameter of 20-24 mm. The inner pressure hole 10 and the outer pressure hole 11 are located on the same axis, and the inner pressure hole 10 and the outer pressure hole 11 are respectively connected to the differential pressure transmitter 12 through a pressure pipe 15, wherein the pressure pipe 15 includes a pressure taking body 14 connected to the outer pressure taking hole 11 and the inner pressure taking hole 10 respectively, one end of the pressure taking body 14 is connected to the pressure pipe through a three-way stopcock 16, and the other end is connected to the outer pressure taking through a moisture ash accumulation mechanism, and a pressure pipe 15 is provided There is a moisture and ash accumulation mechanism that can intercept moisture and ash; after the coal gas enters the pipeline 1 3 and the pipeline 2 4, it enters the pressure pipe 15 through the inner pressure hole 10 and the outer pressure hole 11 located on both sides, and is calculated by the differential pressure transmitter 12. The moisture and ash accumulation mechanism can accumulate and remove a large amount of moisture, ash or other impurities contained in many gas fluids such as compressed air and coal gas, which is conducive to the accurate measurement of differential pressure and avoids the blockage of the elbow flowmeter during use. In addition, the diameter of the inner pressure hole 10, the outer pressure hole 11 or the pressure body 14 is increased, which can avoid blockage and help solve the blockage problem of the pressure taking system. The overall design is reasonable and the structure is simple;

[0027] The pressure pipe 15 is provided with a back-blowing port 13. When blocked, the back-blowing port 13 is connected to the back-blowing unblocking mechanism. When the gas passes through the 90° elbow, a strong swirl is formed, and it is difficult for impurities to accumulate there.

[0028] After the user inserts the circular rod 56 into the circular ring 55, the user places the entire device on the ground, and the upper fastener 51 and the lower fastener 52 can be well fixed by providing a fixing bolt 54. The sponge protective cover 7 can absorb external noise and reduce the interference of noise on the internal elbow flowmeter, making the detection accuracy of the elbow flowmeter more accurate. At the same time, when a heavy object accidentally hits the elbow flowmeter, the sponge protective cover 7 can also reduce the impact force and protect the tight parts inside the elbow flowmeter 101.

[0029] After the fixing device 5 is fixed, the user rotates the circular rod 56, and the circular rod 56 drives the threaded groove 58 to rotate inside the circular hollow barrel 57. Because the bottom of the supporting pier 59 is fixed with a base 60, the base 60 is fixed to the ground by a fixing bolt 61, and the circular hollow barrel 57 is fixed to the upper surface of the supporting pier 59. The circular rod 56 is movably connected to the circular ring 55 above, so the circular rod 56 moves up and down inside the circular hollow barrel 57 as it rotates. The circular rod 56 and the circular hollow barrel 57 are threadedly connected. The user can replace different circular rods 56 to adjust the distance of the excessive gap, so that the elbow flowmeter can be better fixed, and the situation that the elbow flowmeter increases the error due to installation errors is reduced, the accuracy and reliability of its installation are guaranteed, the work efficiency is improved, the shaking of the pipeline is reduced, and the stability of the entire pipeline is increased. When the user does not need to use the fixing device 5, the fixing device 5 can be disassembled so that the user can reuse it;

[0030] When it is necessary to detect the thickness of the scale, then open the first ball valve 82 and the second ball valve 92. At this time, the first distance sensor 83 on the first ball valve 82 sends out an ultrasonic detection signal, which is transmitted to the inner wall of the outer circle of pipe 1 3 and pipe 2 4 via the first ball valve 82 and the first branch pipe 81, and the change in the distance between the first distance sensor 83 and pipe 1 3 and pipe 2 4 is detected, and the thickness of the scale at this location is calculated. The second distance sensor 93 on the second ball valve 92 sends out an ultrasonic detection signal, which is transmitted to the inner wall of the inner circle of pipe 1 3 and pipe 2 4 via the second ball valve 92 and the second branch pipe 91, and the change in the distance between the second distance sensor 93 and the measuring elbow is detected, and the thickness of the scale at this location is calculated. According to the thickness of the scale, it is determined whether the scale affects the detection of the elbow sensor, thereby determining whether the scale needs to be cleaned. During inspection, there is no need to disassemble the measuring elbow, and the operation is relatively convenient.

[0031] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A curved pipe flow meter, comprising a flow meter protection device (1), characterized in that: The flow meter protection device (1) comprises a first pipe (3) and a second pipe (4), the first pipe (3) and the second pipe (4) are movably connected to a sponge protection sleeve (7) on the circumferential side surface, a fixing device (5) is arranged on the sponge protection sleeve (7), the fixing device (5) comprises an upper fastener (51), a lower fastener (52), a connecting piece (53), a fixing bolt (54), a circular ring (55), a circular rod (56), a circular hollow barrel (57), a threaded groove (58), a supporting pier (59) and a second fixing bolt (61), and both sides of the upper fastener (51) and the lower fastener (52) are provided with Two connecting pieces (53), the two connecting pieces (53) are fastened and connected by a fixing bolt (54), a circular ring (55) is arranged at the lower end of the lower fastener (52), a circular rod (56) is slidably connected to the inner wall of the circular ring (55), a thread groove (58) is arranged on the circumferential side of the circular rod (56), a circular hollow barrel (57) is threadedly connected to the circumferential side of the thread groove (58), a supporting pier (59) is fixedly connected to the lower surface of the circular hollow barrel (57), and the sponge protective cover (7) can also reduce the impact force and protect the tight parts inside the pipe (3) and the pipe (4); A first internal detection mechanism (8) and a second internal detection mechanism (9) are respectively fixed on both sides of the first pipe (3) and the second pipe (4), wherein the first internal detection mechanism comprises a first branch pipe (81), a first ball valve (82) and a first distance sensor (83), one end of the first ball valve (82) is coaxially fixed to the first branch pipe (81), the first distance sensor (83) is coaxially fixed to the other end of the first ball valve (82), the first branch pipe (81) is fixed on the first pipe (3), and the second internal detection mechanism comprises a second branch pipe (91), a second ball valve (92) and a second distance sensor (93), one end of the second ball valve (92) is coaxially fixed to the second branch pipe (91), the second distance sensor (93) is coaxially fixed to the other end of the second ball valve (92), and the second branch pipe (91) is fixed on the second pipe (4).

2. The elbow flowmeter according to claim 1, characterized in that: A handle (2) is fixed on the pipe one (3) and the pipe two (4), and an internal pressure-taking hole (10) with a hole diameter of 20-24 mm is opened on the inner side of the pipe one (3) and the pipe two (4).

3. The elbow flowmeter according to claim 2, characterized in that: External pressure-taking holes (11) with a hole diameter of 20-24 mm are opened on the inner and outer sides of the pipe 1 (3) and the pipe 2 (4).

4. The elbow flowmeter according to claim 2, characterized in that: The inner pressure-taking hole (10) and the outer pressure-taking hole (11) are located on the same axis, and the inner pressure-taking hole (10) and the outer pressure-taking hole (11) are respectively connected to the differential pressure transmitter (12) via a pressure-conducting pipe (15).

5. The elbow flowmeter according to claim 4, characterized in that: The pressure-conducting pipe (15) comprises a pressure-taking body (14) respectively connected to the external pressure-taking hole (11) and the internal pressure-taking hole (10).

6. The elbow flowmeter according to claim 5, characterized in that: One end of the pressure taking body (14) is connected to the pressure pipe via a three-way stopcock (16), and the other end is connected to the outside via a moisture and ash accumulation mechanism. The pressure pipe (15) is provided with a moisture and ash accumulation mechanism capable of intercepting moisture and ash.

7. The elbow flowmeter according to claim 6, characterized in that: The pressure guiding pipe (15) is provided with a back-blowing port (13).

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