Liquid lead-bismuth alloy flowmeter and flow measurement method thereof

Abstract

The invention discloses a liquid lead-bismuth alloy flowmeter and a flow measurement method thereof, comprising a cylinder, wherein connecting plates are welded and fixed on the left and right sides of the outer side wall of the cylinder, a first square groove is provided inside the connecting plate, a pipeline connecting plate is detachably connected to one side of the connecting plate, a circular shell is fixedly connected to the inner side wall of the cylinder, a heat conducting plate is fixedly connected to the inside of the circular shell, a plurality of heat sinks are fixedly connected to one side of the heat conducting plate, and a circular hole is provided on the outer side wall of the circular shell; the first square groove on the flowmeter is aligned with the second square groove on the pipeline connecting plate, a column rod is held to move the support ring toward the connecting plate, the support ring and the connecting plate are fitted together, at this time, a handle can be held to push, the guide rod moves in the square groove, when the clamping plate moves out of the square groove, the handle is held to rotate, the clamping plate and the second square groove are staggered, the flowmeter and the pipeline can be installed together, the operation is convenient, and the efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid metal flow measurement and relates to a liquid lead-bismuth alloy flowmeter and a flow measurement method thereof. Background Art

[0002] A lead-cooled fast reactor refers to a fast neutron reactor that is cooled by liquid lead or lead-bismuth alloy. It has good nuclear waste transmutation and nuclear fuel proliferation capabilities, as well as high safety and economy. It has become one of the most promising reactor types in the fourth-generation reactor system.

[0003] Lead-cooled fast reactors generally adopt a pool-type structure. All components of the primary circuit, including the core, steam generator module, main pump and corresponding coolant flow channels, are arranged in the main container, and traditional flow measurement devices are difficult to arrange. At the same time, due to the high operating temperature and certain corrosiveness of the lead-bismuth coolant, the traditional flow measurement method cannot measure the flow of liquid lead-bismuth alloy well. In addition, the operating conditions of the lead-bismuth reactor are complex, with high flexibility requirements and high performance requirements for the control system, which requires accurate measurement data, as well as the storage and processing of a large amount of measurement data.

[0004] Therefore, developing a liquid lead-bismuth alloy flowmeter is an important basis for achieving precise measurement and effective control of lead-bismuth fast reactors, thereby improving their operational flexibility and safety. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the flow rate of liquid lead-bismuth alloy cannot be well measured in the prior art, and to provide a liquid lead-bismuth alloy flowmeter and a flow measurement method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a liquid lead-bismuth alloy flowmeter, comprising a cylinder, the cylinder being a cylindrical structure with two bottom surfaces open, a circular shell with one end open being sleeved in the cylinder, the circular shell being a cylindrical structure, and the outer wall of which is in close contact with the inner wall of the cylinder; support rings are sleeved on both end sides of the cylinder; a first connecting plate with an annular structure is sleeved on both end sides of the circular shell, and the inner ring wall surface of the first connecting plate is in close contact with the outer wall of the circular shell; the cylinder and the circular shell are sealed by the support ring and the first connecting plate; the open side of the circular shell is connected to a pipeline, and a second connecting plate with an annular structure is sleeved at the connection between the pipeline and the circular shell, the inner ring wall surface of the second connecting plate is in close contact with the outer wall of the pipeline, and the second connecting plate is in close contact with the first connecting plate on the opening side of the circular shell;

[0008] A temperature control component and a mounting seat are arranged on the side outer wall of the cylinder, and a heat conduction component is arranged in the inner wall of the circular shell; a component box for installing an electronic control unit and a storage box for installing the temperature control unit are installed on the mounting seat, a liquid flow rate sensor connected to the electronic control unit is arranged in the mounting seat, and the inner cavity of the circular shell is connected to the inner cavity of the mounting seat; the temperature control component is connected to the temperature control unit.

[0009] The above flow meter is further improved in that:

[0010] The support ring, the first connecting plate and the second connecting plate on one side of the circular shell opening, as well as the support ring and the first connecting plate on the opposite side are all movably connected by a number of fasteners with the same structure; the fasteners include a splint, a guide rod and a handle, and the guide rod passes through the bearing hole opened on the support ring, the first square groove opened on the first connecting plate and the second square groove opened on the second connecting plate; the splint and the handle are fixedly connected to the two ends of the guide rod, and the handle is located on the side of the support plate away from the first connecting plate; the shape of the splint is the same as that of the first square groove and the second square groove, and can be offset against one square groove or the second square groove by the rotation direction to achieve a locking function.

[0011] The electronic control unit includes a single-chip microcomputer, a controller, a memory, a wireless network module and a battery, all of which are installed in a component box; the controller, the memory and the wireless network module are all electrically connected to the single-chip microcomputer, and the battery supplies power to the entire electronic control unit; the liquid flow rate sensor is electrically connected to the single-chip microcomputer.

[0012] A through groove is provided on the side of the cylinder, and a through hole opposite to the through groove is provided on the side of the circular shell; the through groove is connected to the inner cavity of the mounting seat, and the liquid in the pipeline can enter the inner cavity of the mounting seat through the through hole and the through groove and contact the liquid flow rate sensor.

[0013] The temperature control component includes a metal tube, and an integrally formed corrugated groove is processed on the outer wall of the cylinder, and the metal tube is wound in the corrugated groove; both ends of the metal tube are open, one end is connected to the temperature control unit, and the other end is connected to the external environment.

[0014] The temperature control unit includes a blower, which is installed in the storage box through a support. The air inlet of the blower is connected to the external environment through an air inlet pipe, and the air outlet is connected to the transmission pipe through an air outlet pipe. The end of the transmission pipe is connected to one end of the metal pipe.

[0015] The heat conduction component includes a heat conduction plate embedded in the side wall of the circular shell, a plurality of heat sinks are fixed on the outside of the heat conduction plate, and a fleshy circular hole is opened on the side wall of the circular shell, which connects the area where the heat sink is located with the area outside the side wall of the circular shell.

[0016] A long groove is opened on the inner wall of the cylinder, and a plurality of round rods are arranged in the long groove along the radial direction of the cylinder. One end of the round rod is fixed at the bottom of the long groove, and the other end is in contact with the outer wall of the circular shell.

[0017] A bearing is arranged in the bearing hole, and the number of the bearing hole, the first square groove and the second square groove is 6, and they are evenly distributed along the circumferential direction.

[0018] In a second aspect, the present invention provides a method for measuring the flow rate of a liquid lead-bismuth alloy, comprising the following steps:

[0019] Step 1, align the second square groove with the first square groove, hold the column rod and move the support ring to the side of the first connecting plate to contact, so that the guide rod is located in the first square groove and the second square groove, the clamping plate passes through the square groove, and then hold the handle and rotate it to stagger the clamping plate and the second square groove, and complete the installation of the flow meter and the pipeline;

[0020] Step 2, during measurement, high-temperature liquid lead-bismuth alloy flows through the flowmeter, and the heat of the liquid lead-bismuth alloy is transferred to the circular shell, and then to the heat conduction plate, the heat sink and the cylinder, and the heat is transferred outward, and the air blown out by the blower is transferred to the metal pipe to dissipate the heat on the metal pipe; the pipe cross-sectional area value is stored in the memory, and the calculation program is stored in the memory through the input device, and the high-temperature resistant liquid flow rate sensor monitors the flow rate of the liquid lead-bismuth alloy, and then multiplies the cross-sectional area value of the pipe to obtain the volume flow rate of the liquid lead-bismuth alloy.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention is provided with a circular shell, a heat conducting plate, a heat sink, a circular hole, a long groove, a round rod, a corrugated groove, a metal tube, a storage box, a through hole, a blower, an air inlet pipe, a support, a transmission pipe, and other structural elements. When the flow meter is in use, high-temperature liquid lead-bismuth alloy flows through it. The design of the above-mentioned structural elements is that the circular shell is made of a high-temperature resistant and anti-corrosion material, which can make it directly contact with the liquid lead-bismuth alloy. The heat of the liquid lead-bismuth alloy is transferred to the circular shell, and then to the heat conducting plate, the heat sink and the cylinder, and the heat is transferred to the outside to avoid damage to the flow meter. In addition, the air blown out by the blower is transferred to the metal tube, and the heat on the metal tube can be dissipated, which is conducive to improving the service life of the designed flow meter.

[0023] (2) The present invention provides structural elements such as a component box, a single-chip microcomputer, a controller, a memory, a wireless network module, a through slot, a liquid flow rate sensor, and a shell. The memory stores the value of the cross-sectional area of ​​the pipeline. The calculation program is stored in the memory through an input device. The high-temperature resistant liquid flow rate sensor monitors the flow rate of the liquid lead-bismuth alloy, and then multiplies the cross-sectional area value of the pipeline to obtain the volume flow rate of the liquid lead-bismuth alloy. The measurement is contactless and the operation is convenient.

[0024] (3) In the present invention, by setting structural elements such as a support ring, a connecting plate, a handle, a clamping plate, a second square groove, a guide rod, a first square groove, a bearing, a column rod, etc., the first square groove on the flow meter is aligned with the second square groove on the pipeline connecting plate, and the support ring is moved toward the connecting plate by holding the column rod. The support ring and the connecting plate are fitted together. At this time, the handle can be held to push, and the guide rod moves in the square groove. When the clamping plate moves out of the square groove, the handle is held and rotated, and the clamping plate and the second square groove are staggered, so that the flow meter and the pipeline can be installed together, which is convenient to operate and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the present invention.

[0027] Figure 2 It is a cross-sectional structural schematic diagram of the present invention.

[0028] Figure 3 It is a right view structural schematic diagram of the pipeline connecting plate in the present invention.

[0029] Figure 4 It is a schematic diagram of a partially enlarged structure in the present invention.

[0030] Among them, 1-cylinder, 2-support ring, 3-connecting plate, 4-clamp, 5-handle, 6-corrugated groove, 7-component box, 8-mounting seat, 9-storage box, 10-metal pipe, 11-pipe connecting plate, 12-pipe, 13-reciprocating shell, 14-heat conducting plate, 15-heat sink, 16-round hole, 17-long groove, 18-round rod, 19-single chip microcomputer, 20-controller, 21-memory, 22-wireless network module, 23-battery, 24-guide rod, 25-second square groove, 26-first square groove, 27-bearing, 28-through hole, 29-blower, 30-inlet pipe, 31-support, 32-transmission pipe, 33-outlet pipe, 34-through groove, 35-liquid flow rate sensor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0036] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0038] See also Figure 1 and Figure 2 The embodiment of the present invention discloses a liquid lead-bismuth alloy flowmeter, including a cylinder 1, a first connecting plate 3 is welded and fixed on the left and right sides of the outer wall of the cylinder 1, a first square groove 26 is provided inside the first connecting plate 3, a second connecting plate 11 is detachably connected to one side of the first connecting plate 3, a circular shell 13 is fixedly connected to the inner wall of the cylinder 1, the circular shell 13 is annular, and the inside of the ring is a hollow structure, a through hole 28 is integrally formed on the upper part of the inside of the circular shell 13, and the through hole 28 coincides with the center of the through groove 34. A heat conducting plate 14 is fixedly connected inside the circular shell 13, and a plurality of heat sinks 15 are fixedly connected to one side of the heat conducting plate 14. A circular hole 16 is provided on the outer wall of the circular shell 13, and a long groove 17 is provided on the inner wall of the cylinder 1. A plurality of round rods 18 are fixedly connected inside the long groove 17. A corrugated groove 6 is integrally formed on the outer wall of the cylinder 1. A metal tube 10 is spirally wound inside the corrugated groove 6. The metal tube 10 is made of stainless steel. The metal tube 10 is wound around the outer wall of the cylinder 1, and a transmission tube 32 is connected to the middle of the metal tube 10. Both ends of the metal tube 10 are open, and the metal tube 10 has good thermal conductivity. Heat is transferred to the metal tube 10. The metal tube 10 is a hollow structure. The wind blown by the blower 29 flows in the metal tube 10, which plays a heat dissipation role and can prevent the metal tube 10 from overheating. A through groove 34 is provided inside the cylinder 1. A mounting seat 8 is fixedly connected to the top of the cylinder 1. A liquid flow rate sensor 35 is fixedly connected inside the mounting seat 8. A component box 7 is fixedly connected to the upper surface of the mounting seat 8. A single chip microcomputer 19, a controller 20, a memory 21, a wireless network module 22 and a battery 23 are installed inside the component box 7. A heat dissipation hole is provided on the lower surface of the component box 7. The cross-sectional area value of the pipeline 12 is stored in the memory 21. A storage box 9 is fixedly connected to the right side of the mounting seat 8. A support 31 is fixedly connected inside the storage box 9. A blower 29 is fixedly connected to the upper surface of the support 31. An air inlet pipe 30 is connected to the right side of the blower 29. An air outlet pipe 33 is connected to the bottom end of the blower 29. Both the air inlet pipe 30 and the air outlet pipe 33 pass through the outside of the storage box 9. A transmission pipe 32 is connected below the air outlet pipe 33, and the bottom end of the transmission pipe 32 is connected to the metal pipe 10.

[0039] In this embodiment, the design of the corrugated groove 6 can increase the contact area between the cylinder 1 and the outside world, which is beneficial to the heat dissipation of the flow meter; the round rod 18 is used to support the cylinder 1 to reduce the deformation of the cylinder 1 caused by collision; the components of the flow meter are all made of high-temperature resistant materials, which can prevent the high temperature of the liquid lead-bismuth alloy from causing the flow meter to be unusable.

[0040] The second connecting plate 11 has six second square grooves 25 arranged inside, and the six second square grooves 25 are arranged in a circular array. The second square grooves 25 are movably connected to the clamping plate 4, and the clamping plate 4 is in a flat rectangular shape. The clamping plate 4 can move in the square groove, and when the handle 5 is held and rotated, the clamping plate 4 rotates to a vertical direction. The right side of the second connecting plate 11 is connected to a pipe 12, and a support ring 2 is sleeved on the outside of the cylinder 1. There are two support rings 2, and the support ring 2 is movably connected to the cylinder 1. The support ring 2 can move to the left or to the right on the cylinder 1. A column rod is arranged in front of the outer wall of the support ring 2 and behind the outer wall of the support ring 2. The column rod is fixedly connected to the support ring 2, and the column rod is used for the staff to hold, so as to facilitate the position of the support ring 2. A bearing 27 is fixedly connected to the inside of the support ring 2, and a guide rod 24 is fixedly connected to the inner wall of the bearing 27. The guide rod 24 runs through the first square groove 26 and the second square groove 25. A handle 5 is fixedly connected to one end of the guide rod 24, and a clamping plate 4 is fixedly connected to the other end of the guide rod 24. The side view of the support ring 2 is annular. The support ring 2 is sleeved on the outside of the cylinder 1. When the clamping plate 4 is aligned with the first square groove 26, the support ring 2 can be moved close to the first connecting plate 3, and the clamping plate 4 is thereby passed through the first square groove 26. Similarly, if Figure 3 As shown, when the first square slot 26 is aligned with the second square slot 25, the splint 4 can pass through the second square slot 25. When the splint 4 passes through the second square slot 25, the user holds the handle 5 and rotates it, and the splint 4 originally placed horizontally "changes" into a vertical position.

[0041] The working process of the present invention is as follows:

[0042] Align the flowmeter with the second connecting plate 11, that is, align the second square groove 25 with the first square groove 26. At this time, hold the column rod to move the support ring 2 to the side of the first connecting plate 3 to contact it, and the guide rod 24 will be in the square groove, and the clamping plate 4 will pass through the square groove. Then hold the handle 5 and turn it. The clamping plate 4 and the second square groove 25 are staggered, so that the flowmeter can be installed together with the pipeline. When the flowmeter is in use, high-temperature liquid lead-bismuth alloy flows through it, and the heat of the liquid lead-bismuth alloy is transferred to the circular shell 13, which will be transferred along with it. The heat is transferred to the heat conducting plate 14, the heat sink 15 and the cylinder 1, and the heat is transferred to the outside. The blower 29 blows out wind to transfer it into the metal pipe 10, and the heat on the metal pipe 10 can be dissipated. The pipe cross-sectional area value is stored in the memory 21, and the calculation program is stored in the memory 21 through the input device. The high-temperature resistant liquid flow rate sensor 35 monitors the flow rate of the liquid lead-bismuth alloy, and then multiplies the cross-sectional area value of the pipe to obtain the volume flow rate of the liquid lead-bismuth alloy. The measurement is contactless and the operation is convenient.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid lead-bismuth alloy flowmeter, characterized in that: The invention comprises a cylinder (1), wherein the cylinder (1) is a cylindrical structure with two bottom surfaces open, a circular shell (13) with one end open is sleeved inside the cylinder (1), the circular shell (13) is a cylindrical structure, and the outer wall of the circular shell (13) is in close contact with the inner wall of the cylinder (1); support rings (2) are sleeved on both end sides of the cylinder (1); first connecting plates (3) with an annular structure are sleeved on both end sides of the circular shell (13), and the inner annular wall of the first connecting plate (3) is in close contact with the outer wall of the circular shell (13); The body (1) and the circular shell (13) are sealed via a support ring (2) and a first connecting plate (3); the opening side of the circular shell (13) is connected to the pipeline (12); a second connecting plate (11) with an annular structure is mounted at the connection between the pipeline (12) and the circular shell (13); the inner annular wall surface of the second connecting plate (11) is sealedly connected to the outer wall of the pipeline (12); and the second connecting plate (11) is sealedly connected to the first connecting plate (3) on one side of the opening of the circular shell (13); A temperature control component and a mounting seat (8) are arranged on the side outer wall of the cylinder (1); a heat conduction component is arranged in the inner wall of the circular shell (13); a component box (7) for mounting an electric control unit and a storage box (9) for mounting the temperature control unit are mounted on the mounting seat (8); a liquid flow rate sensor (35) connected to the electric control unit is arranged in the mounting seat (8); the inner cavity of the circular shell (13) is connected to the inner cavity of the mounting seat (8); the temperature control component is connected to the temperature control unit; A through groove (34) is formed on the side of the cylinder (1), and a through hole (28) is formed on the side of the circular shell (13) opposite to the through groove (34); the through groove (34) is communicated with the inner cavity of the mounting seat (8), and the liquid in the pipeline (12) can enter the inner cavity of the mounting seat (8) through the through hole (28) and the through groove (34) and contact the liquid flow rate sensor (35); The heat conduction component comprises a heat conduction plate (14) embedded in the side wall of the circular shell (13); a plurality of heat sinks (15) are fixed to the outside of the heat conduction plate (14); a circular hole (16) is opened on the side wall of the circular shell (13); the circular hole (16) connects the area where the heat sink (15) is located with the area outside the side wall of the circular shell (13); A long groove (17) is provided on the inner wall of the cylinder (1), and a plurality of round rods (18) are arranged in the long groove (17) along the radial direction of the cylinder (1). One end of the round rod (18) is fixed to the bottom of the long groove (17), and the other end is in contact with the outer wall of the circular shell (13).

2. The liquid lead-bismuth alloy flowmeter according to claim 1, characterized in that: The support ring (2), the first connecting plate (3) and the second connecting plate (11) on one side of the opening of the circular shell (13), as well as the support ring (2) and the first connecting plate (3) on the opposite side are all movably connected via a plurality of fasteners of the same structure; the fasteners include a clamping plate (4), a guide rod (24) and a handle (5); the guide rod (24) passes through a bearing hole provided on the support ring (2), a first square groove (26) provided on the first connecting plate (3) and a second square groove (25) provided on the second connecting plate (11); the clamping plate (4) and the handle (5) are fixedly connected to the two ends of the guide rod (24); the handle (5) is located on the side of the support plate (2) away from the first connecting plate (3); the shape of the clamping plate (4) is the same as that of the first square groove (26) and the second square groove (25), and can be abutted against the first square groove (26) or the second square groove (25) by rotating in a direction to achieve a locking function.

3. The liquid lead-bismuth alloy flowmeter according to claim 1, characterized in that: The electronic control unit comprises a single-chip computer (19), a controller (20), a memory (21), a wireless network module (22), and a battery (23), all of which are installed in a component box (7); the controller (20), the memory (21), and the wireless network module (22) are all electrically connected to the single-chip computer (19); the battery (23) supplies power to the entire electronic control unit; and the liquid flow rate sensor (35) is electrically connected to the single-chip computer (19).

4. The liquid lead-bismuth alloy flowmeter according to claim 1, characterized in that: The temperature control component comprises a metal tube (10), the outer wall of the cylinder (1) is processed with an integrally formed corrugated groove (6), and the metal tube (10) is wound in the corrugated groove (6); both ends of the metal tube (10) are open, one end is connected to the temperature control unit, and the other end is connected to the external environment.

5. The liquid lead-bismuth alloy flowmeter according to claim 4, characterized in that: The temperature control unit comprises a blower (29), the blower (29) being installed in the storage box (9) via a support (31), the air inlet of the blower (29) being connected to the external environment via an air inlet pipe (30), the air outlet being connected to a transmission pipe (32) via an air outlet pipe (33), and the end of the transmission pipe (32) being connected to one end of the metal pipe (10).

6. The liquid lead-bismuth alloy flowmeter according to claim 2, characterized in that: A bearing (27) is disposed in the bearing hole, and the number of the bearing hole, the first square groove (26), and the second square groove (25) are all 6, and are evenly distributed along the circumferential direction.

7. A method for measuring the flow rate of liquid lead-bismuth alloy using the flowmeter according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1, align the second square groove (25) with the first square groove (26), hold the column rod to move the support ring (2) to the side of the first connecting plate (3) to contact, so that the guide rod (24) is located in the first square groove (26) and the second square groove (25), the clamping plate (4) passes through the square groove, and then hold the handle (5) to rotate so that the clamping plate (4) and the second square groove (25) are offset, and the installation of the flow meter and the pipeline is completed; Step 2, during measurement, high-temperature liquid lead-bismuth alloy flows through the flow meter, and the heat of the liquid lead-bismuth alloy is transferred to the circular shell (13), and then to the heat conducting plate (14), the heat sink (15) and the cylinder (1), and the heat is transferred to the outside. The blower (29) blows out air and transfers it to the metal pipe (10), so as to dissipate the heat on the metal pipe (10); the pipe cross-sectional area value is stored in the memory (21), and the calculation program is stored in the memory (21) through the input device. The high-temperature resistant liquid flow rate sensor (35) monitors the flow rate of the liquid lead-bismuth alloy, and then multiplies it by the pipe cross-sectional area value, so as to obtain the volume flow rate of the liquid lead-bismuth alloy.

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