Non-contact flowmeter installation device and installation method

Abstract

The non-contact flowmeter mounting device comprises a first clamping plate, a second clamping plate, a fine adjustment assembly, a locking assembly, a wave guide plate, a jacking assembly, a probe fixing frame and a limiting shaft, the first clamping plate and the second clamping plate are assembled outside a pipeline, and the fine adjustment assembly and the locking assembly are assembled between the first clamping plate and the second clamping plate; a wave guide plate is inserted in the position, close to the pipeline, of the mounting groove, the upper end of the wave guide plate is sleeved with a probe fixing frame, and a jacking assembly is assembled in the first clamping plate; the upper part and the lower part of the device are connected through the limiting shaft, the locking screw is fastened, the fine adjustment nut is adjusted according to a standard value, the inner diameter of the device is made to be consistent with the outer diameter of a pipeline, the wave guide plate is pressed on the metal coupling piece through the puller bolt, and stable installation of the non-contact flow meter sensor is achieved. The device is easy to operate and convenient to disassemble, assemble and maintain, non-synchronous deviation and looseness generated by the two sensors in a long-term vibration environment are reduced, and the installation precision and the measurement precision of the non-contact flowmeter are improved.

Description

Technical Field

[0001] The invention relates to an auxiliary device in the technical field of ship installation, and in particular to a non-contact flow meter installation device and an installation method. Background Art

[0002] In the past, the flow rate of large-diameter pipelines has never been directly measured on ships, but the pipeline flow rate is collected by converting thermal parameters. Now, in order to improve the measurement accuracy and response speed, it is necessary to directly measure the medium flow in large-diameter pipelines and keep it working stably in an environment of long-term impact and swing.

[0003] To solve the above problems, a stable non-contact measurement method is needed. At present, the non-contact flow meter consists of two sensors, upper and lower, which are independently installed using the Z-type installation method. The traditional Z-type installation method first determines the position of the upstream sensor according to the reserved length of the upstream straight pipe section, and then uses a ruler and a clamp to mark the position of the downstream sensor according to the measurement spacing requirements, and finally fixes the two sensors separately with clamps. In this process, there are certain installation errors in both measurement and installation. At the same time, under long-term vibration environment, the pipeline will cause the two sensors to produce asynchronous offset and looseness, affecting the measurement accuracy.

[0004] Therefore, how to design and use an adjustable special installation fixture and installation method to fix and install the non-contact flow meter and improve the subsequent measurement accuracy has become an urgent problem to be solved. Summary of the invention

[0005] In order to improve the measurement accuracy of a non-contact flowmeter, the present invention provides a non-contact flowmeter installation device and installation method. The method uses a special clamp and adopts the steps of clamp assembly, clamp and pipeline fixation, high-temperature waveguide plate and sensor part installation, ultrasonic sensor and high-temperature waveguide plate fixation, insulation cotton coating, etc. to control the distance between the upper and lower sensors, thereby improving the measurement accuracy of the non-contact flowmeter and solving the technical problem that the two sensors produce asynchronous offset and looseness under long-term vibration environment, affecting the measurement accuracy.

[0006] The solution adopted by the present invention to solve the technical problem is: A non-contact flow meter installation device, including a first clamping plate, which is designed as a double-layer structure and is arranged on one side of the periphery of a pipe to be measured, and a mounting groove is provided near the pipe, and a first support sleeve for support is provided between the double-layer structure; a second clamping plate, which is designed as a double-layer structure and is arranged on the other side of the periphery of the pipe to be measured, and a second support sleeve for support is provided between the double-layer structure; a fine-tuning component, one end of which is assembled on the rear side of the first clamping plate and the other end is assembled on the rear side of the second clamping plate, and is used to fine-tune the distance between the first clamping plate and the second clamping plate; a locking component, one end of which is assembled on the front side of the first clamping plate and the other end is assembled on the front side of the second clamping plate, and is used to lock the device to the periphery of the pipe to be measured; a waveguide plate, one end of which is inserted into the The inside of the mounting groove, the other end extends upward; a tightening component is assembled inside the first clamping plate, one end is placed on the outside of the first clamping plate, the other end extends toward the waveguide plate and tightens its side wall against the outer wall of the pipe to be measured; a probe fixing frame is sleeved on the upper end of the waveguide plate, and its front end is used to fix the sensor of the non-contact flow meter; wherein, the first clamping plate, the second clamping plate, the fine-tuning component, the locking component, the waveguide plate, the tightening component and the probe fixing frame constitute the upper half of the device, the lower half of the device has the same structure as the upper half and is arranged in a central symmetrical manner, and the two are assembled and connected by a limiting shaft, the limiting shaft is designed in a stepped shaft structure, and the two ends are respectively arranged through the first support sleeve and the second support sleeve.

[0007] The fine-tuning assembly disclosed in this embodiment includes a fine-tuning screw, one end of which is assembled in the double-layer structure of the first clamping plate, and the other end of which is assembled in the double-layer structure of the second clamping plate; a fine-tuning nut is mounted on the periphery of the fine-tuning screw to control the telescopic length of the fine-tuning screw.

[0008] The locking assembly disclosed in this embodiment includes a locking screw, which is arranged on the opposite side of the fine-tuning screw, one end of which is assembled in the double-layer structure of the first clamping plate, and the other end extends toward the second clamping plate and has a through hole vertically opened therein; a rotating shaft passes through the double-layer structure of the second clamping plate and is assembled in the through hole of the locking screw.

[0009] According to the embodiment disclosed, a metal coupling sheet is arranged at the contact portion between the waveguide plate and the pipe to be measured, so as to enhance the conduction effect of the waveguide plate and thus improve the measurement accuracy.

[0010] The locking assembly disclosed in this embodiment includes a square nut fixed in the double-layer structure of the first clamping plate; a tightening bolt assembled in the square nut, with one end placed on the outside of the first clamping plate and the other end extending toward the waveguide plate and tightening it; an elastic plate arranged between the tightening bolt and the waveguide plate to buffer the force of the tightening bolt to prevent it from damaging the waveguide plate.

[0011] In order to further solve the technical problem to be solved by the present invention, the present invention provides a method for installing a non-contact flow meter installation device, comprising the following steps: Step 1. Determine the upstream pipe end face, and lock the first clamping plate and the second clamping plate on the periphery of the pipe to be measured by tightening the nut on the locking screw; Step 2. Hold the middle of the limit shaft, measure the distance between the first clamping plate and the second clamping plate, and compare it with the standard value of the technical requirements. If it does not meet the standard, adjust the fine-tuning nut so that the inner diameter of the device is consistent with the outer diameter of the pipe to be measured; Step 3. Grind the portion of the measured pipeline where the waveguide plate is installed to make it flat and smooth, with a maximum grinding thickness of no more than 0.2 mm; Step 4. Use tape to fix one side of the metal coupling sheet to the contact portion between the waveguide plate and the pipe to be measured, then insert the waveguide plate into the mounting slot, use the tightening bolt to push the metal coupling sheet toward the pipe to be measured, and finally completely press the waveguide plate onto the metal coupling sheet; Step 5. According to the installation position of the pipeline to be measured, evenly apply high-temperature coupling agent on the contact surface between the waveguide plate and the sensor, and install the sensor on the probe fixing frame; Step 6. Use heat-insulating cotton to cover the lower half of the waveguide plate, and expose the upper half of the waveguide plate and the sensor to the environment. Avoid collision and extrusion of the device and the sensor of the non-contact flow meter during the covering process.

[0012] Positive effects: The present invention assembles a first clamping plate and a second clamping plate on both sides of the periphery of the pipeline to be measured, and assembles a fine-tuning component and a locking component between the two. A waveguide plate is inserted into the installation groove of the first clamping plate near the pipeline, a probe fixing frame is sleeved on the upper end of the waveguide plate, and a tightening component is assembled inside the first clamping plate. The upper and lower parts of the device are connected by a limit shaft, and the nut on the locking screw is tightened to lock the first clamping plate and the second clamping plate to the periphery of the pipeline to be measured. At the same time, the distance between the two is measured. If the standard value of the technical requirements is not met, the fine-tuning nut is adjusted so that the inner diameter of the device is consistent with the outer diameter of the pipeline to be measured. The waveguide plate is tightened with a tightening bolt so that it is completely pressed on the metal coupling sheet, and the sensor is installed on the probe fixing frame to achieve a stable installation of the upper and lower sensors of the non-contact flowmeter. The device is simple and convenient to operate, easy to disassemble and maintain, reduces the asynchronous offset and looseness of the two sensors in a long-term vibration environment, and effectively improves the installation accuracy and measurement accuracy of the non-contact flowmeter. It is suitable for use as a non-contact flowmeter installation device and installation method. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is the main view of the embodiment of the present application; Figure 3 This is a bottom view of an embodiment of the present application; Figure 4 This is a schematic diagram of the installation of thermal insulation cotton in an embodiment of the present application.

[0014] In the figure, 10. The first clamping plate, 11. Mounting slot, 12. First supporting sleeve; 20. Second clamping plate, 21. Second supporting sleeve; 30. Fine-tune components, 31. Fine-tuning screw, 32. Fine-tuning nut; 40. Locking assembly, 41. locking screw, 42. rotating shaft; 50. Waveguide plate, 51.Metal coupling sheet; 60.Tighten the assembly, 61. square nut, 62. tightening bolt, 63. elastic plate; 70. Probe fixing frame; 80. Limit axis. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Although the embodiments of the present invention have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0016] As shown in the figure, a non-contact flow meter installation device includes: The first clamping plate 10 is designed as a double-layer structure, arranged on one side of the periphery of the pipe to be measured, and a mounting groove 11 is opened near the pipe, and a first support sleeve 12 for support is arranged between the double-layer structure; the second clamping plate 20 is designed as a double-layer structure, arranged on the other side of the periphery of the pipe to be measured, and a second support sleeve 21 for support is arranged between the double-layer structure; a fine-tuning component 30, one end of which is assembled on the rear side of the first clamping plate 10, and the other end is assembled on the rear side of the second clamping plate 20, for fine-tuning the distance between the first clamping plate 10 and the second clamping plate 20; a locking component 40, one end of which is assembled on the front side of the first clamping plate 10, and the other end is assembled on the front side of the second clamping plate 20, for locking the device on the periphery of the pipe to be measured; a waveguide plate 50, one end of which is inserted into the inside of the mounting groove 11, and the other end is assembled on the front side of the second clamping plate 20 The end extends upward; a tightening component 60 is assembled inside the first clamping plate 10, one end is placed on the outside of the first clamping plate 10, and the other end extends toward the waveguide plate 50 and tightens its side wall against the outer wall of the pipe to be measured; a probe fixing frame 70 is sleeved on the upper end of the waveguide plate 50, and its front end is used to fix the sensor of the non-contact flow meter; wherein, the first clamping plate 10, the second clamping plate 20, the fine-tuning component 30, the locking component 40, the waveguide plate 50, the tightening component 60 and the probe fixing frame 70 constitute the upper half of the device, and the lower half of the device has the same structure as its upper half and is arranged in a central symmetrical manner, and the two are assembled and connected by a limiting shaft 80, and the limiting shaft 80 is designed in a stepped shaft structure, and the two ends are respectively arranged through the first support sleeve 12 and the second support sleeve 21.

[0017] Specifically, the first clamping plate 10 is designed with a double-layer structure and is arranged on one side of the periphery of the pipeline to be measured. The first supporting sleeve 12 is fixedly arranged between the upper and lower layers by welding, and a accommodating space is supported and constructed by the first supporting sleeve 12. The mounting groove 11 is opened at a position close to the pipeline to be measured, which is used for plugging and assembling the waveguide plate 50; the second clamping plate 20 is also designed with a double-layer structure and is arranged on the other side of the periphery of the pipeline to be measured. The second supporting sleeve 21 is fixedly arranged between the upper and lower layers by welding, and another accommodating space is supported and constructed by the second supporting sleeve 21; One end of the fine-tuning assembly 30 is assembled to the rear side of the first clamping plate 10 by means of bolt connection, and the other end thereof is assembled to the rear side of the second clamping plate 20 by means of bolt connection, and both are arranged between the double-layer structures of the two, and are used to fine-tune the horizontal distance between the first clamping plate 10 and the second clamping plate 20; one end of the locking assembly 40 is assembled to the front side of the first clamping plate 10 by means of bolt connection and is arranged between the double-layer structures of the first clamping plate 10, and the other end thereof is assembled through the double-layer structure of the second clamping plate 20 and is arranged on the front side of the second clamping plate 20, and is used to adjust the horizontal distance between the first clamping plate 10 and the second clamping plate 20. The device is locked to the periphery of the pipeline to be measured; one end of the waveguide plate 50 is plugged and assembled inside the mounting groove 11, and the other end extends vertically upward; the pressing assembly 60 is fastened and assembled inside the side wing of the first clamping plate 10 through two sets of bolt and nut groups, one end of which is placed on the outside of the first clamping plate 10, and the other end extends toward the waveguide plate 50 and presses its side wall against the outer wall of the pipeline to be measured; the probe fixing frame 70 is set on the upper end of the waveguide plate 50, and it is close to the front end of the pipeline to be measured for fixing the sensor of the non-contact flow meter; wherein, the first clamping plate 10 and the second clamping plate 20. The fine-tuning assembly 30, the locking assembly 40, the waveguide plate 50, the tightening assembly 60 and the probe fixing frame 70 constitute the upper part of the device. The lower part of the device has the same structure as the upper part and is arranged in a central symmetrical manner. The two are assembled and connected by the limit shaft 80. The limit shaft 80 is designed as a stepped shaft structure, and its two ends are respectively arranged through the first supporting sleeve 12 and the second supporting sleeve 21, and are locked with nuts at the top and bottom ends. The length of the middle section of the limit shaft 80 determines the vertical distance between the first clamping plate 10 and the second clamping plate 20.

[0018] The fine-tuning assembly 30 includes a fine-tuning screw 31, one end of which is assembled in the double-layer structure of the first clamping plate 10, and the other end is assembled in the double-layer structure of the second clamping plate 20; a fine-tuning nut 32, which is sleeved on the periphery of the fine-tuning screw 31 and is used to control the telescopic length of the fine-tuning screw 31.

[0019] Specifically, one end of the fine-tuning screw 31 is fixedly assembled in the double-layer structure of the first clamping plate 10 by means of a bolt connection, and the other end thereof is fixedly assembled in the double-layer structure of the second clamping plate 20 by means of a bolt connection; the fine-tuning nut 32 is sleeved on the periphery of the fine-tuning screw 31, and the telescopic length of the fine-tuning screw 31 is controlled by rotating the fine-tuning nut 32, thereby adjusting the distance between the first clamping plate 10 and the second clamping plate 20. For every 1 mm change in the distance, the fine-tuning nut 32 rotates half a turn accordingly.

[0020] The locking assembly 40 includes a locking screw 41, which is arranged on the opposite side of the fine-tuning screw 31, one end of which is assembled in the double-layer structure of the first clamping plate 10, and the other end extends toward the second clamping plate 20 and vertically opens a through hole; a rotating shaft 42 passes through the double-layer structure of the second clamping plate 20 and is assembled in the through hole of the locking screw 41.

[0021] Specifically, the locking screw 41 is arranged on the opposite side of the fine-tuning screw 31, that is, on the front side of the first clamping plate 10, one end of which is assembled in the double-layer structure of the first clamping plate 10 by bolt connection, and the other end extends toward the second clamping plate 20 and vertically opens a through hole; the rotating shaft 42 passes through the double-layer structure on the front side of the second clamping plate 20, and its upper and lower ends are locked by nuts, and its middle outer diameter size is adapted to the through hole size of the locking screw 41 and is movably assembled in the through hole, so that the first clamping plate 10 rotates in the horizontal direction with the rotating shaft 42 as the axis, so that the fine-tuning assembly 30 can adjust the distance between the first clamping plate 10 and the second clamping plate 20.

[0022] A metal coupling sheet 51 is arranged at the contact portion between the waveguide plate 50 and the pipe to be measured, so as to enhance the conduction effect of the waveguide plate 50 and thus improve the measurement accuracy.

[0023] Specifically, the metal coupling sheet 51 is attached to the side wall of the waveguide plate 50 close to the pipe to be measured, and the torque value used for fully pressing the waveguide plate 50 is in the range of (10~15)N×m, which is used to enhance the conduction effect of the waveguide plate 50 and thus improve the measurement accuracy.

[0024] The locking assembly 40 includes a square nut 61, which is fixed in the double-layer structure of the first clamping plate 10; a tightening bolt 62, which is assembled in the square nut 61, with one end placed on the outside of the first clamping plate 10 and the other end extending toward the waveguide plate 50 and tightening it; an elastic plate 63, which is arranged between the tightening bolt 62 and the waveguide plate 50, and is used to buffer the force of the tightening bolt 62 to prevent it from causing damage to the waveguide plate 50.

[0025] Specifically, the square nut 61 is fixedly arranged in the double-layer structure of the first clamping plate 10 by welding, and its height is adapted to the height of the first supporting sleeve 12; the tightening bolt 62 is assembled in the square nut 61 by bolt connection, one end of which is placed on the outside of the first clamping plate 10, and the other end of which extends toward the waveguide plate 50 and tightens it; the elastic plate 63 is arranged between the tightening bolt 62 and the waveguide plate 50, and is fastened and assembled inside the side wing of the first clamping plate 10 by two sets of bolt and nut groups, so as to buffer the force of the tightening bolt 62 and avoid damage to the waveguide plate 50; the tightening bolt 62 pushes the elastic plate 63 toward the direction of the pipeline to be measured, thereby tightening the side wall of the waveguide plate 50 against the outer wall of the pipeline to be measured.

[0026] The working process of this embodiment: A method for installing a non-contact flow meter installation device comprises the following steps: Step 1. Determine the upstream pipe end face, and lock the first clamping plate 10 and the second clamping plate 20 on the periphery of the pipe to be measured by tightening the nut on the locking screw 41; Step 2. Hold the middle of the limit shaft 80, measure the distance between the first clamping plate 10 and the second clamping plate 20, and compare it with the standard value of the technical requirements. If it does not meet the standard, adjust the fine-tuning nut 32 until it meets the standard, so that the inner diameter of the device is consistent with the outer diameter of the pipe to be measured; Step 3. Grind the portion of the measured pipeline where the waveguide plate 50 is installed to make it flat and smooth, with a maximum grinding thickness of no more than 0.2 mm; Step 4. Use adhesive tape to fix one side of the metal coupling sheet 51 to the contact portion between the waveguide plate 50 and the pipe to be measured, then insert the waveguide plate 50 into the mounting slot 11, use the tightening bolt 62 to push the metal coupling sheet 51 toward the pipe to be measured, and finally press the waveguide plate 50 completely onto the metal coupling sheet 51; Step 5. According to the installation position of the pipeline to be measured, evenly apply high-temperature coupling agent on the contact surface between the waveguide plate 50 and the sensor, and install the sensor on the probe fixing frame 70; Step 6. Use heat-insulating cotton to cover the lower half of the waveguide plate 50, and the upper half of the waveguide plate 50 and the sensor are exposed to the environment. During the covering process, avoid collision and extrusion of the device and the sensor of the non-contact flow meter.

[0027] Features of the present invention: The present invention assembles a first clamping plate 10 and a second clamping plate 20 on both sides of the periphery of the pipe to be measured, and assembles a fine-tuning assembly 30 and a locking assembly 40 between the two. A waveguide plate 50 is inserted into the mounting groove 11 of the first clamping plate 10 near the pipe, a probe fixing frame 70 is sleeved on the upper end of the waveguide plate 50, and a tightening assembly 60 is assembled inside the first clamping plate 10. In actual use, the upper and lower parts of the device are connected by a limit shaft 80, and the nut on the locking screw 41 is tightened to lock the first clamping plate 10 and the second clamping plate 20 on the periphery of the pipe to be measured, and the distance between the two is measured at the same time. If the standard value of the technical requirements is not met, the fine-tuning nut 32 is adjusted to make the inner diameter of the device consistent with the outer diameter of the pipe to be measured, and the tightening bolt 62 is used to tighten the waveguide plate 50 so that it is completely pressed on the metal coupling sheet 51, and the sensor is installed on the probe fixing frame 70 to achieve a stable installation of the upper and lower sensors of the non-contact flow meter. Through this technical solution, the asynchronous offset and looseness of the two sensors in a long-term vibration environment can be reduced, effectively improving the installation accuracy and measurement accuracy of the non-contact flow meter. In addition, this device is simple and convenient to operate, and easy to disassemble and maintain, which effectively improves the construction efficiency of workers and reduces construction costs.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A non-contact flow meter installation device, characterized in that: The first clamping plate (10) is designed as a double-layer structure, arranged on one side of the outer periphery of the pipeline to be measured, and is provided with a mounting groove (11) near the pipeline. A first supporting sleeve (12) for support is provided between the double-layer structure; The second clamping plate (20) is designed as a double-layer structure and is arranged on the other side of the periphery of the pipeline to be measured, and a second supporting sleeve (21) for support is arranged between the double-layer structure; a fine-adjustment assembly (30), one end of which is mounted on the rear side of the first clamping plate (10) and the other end of which is mounted on the rear side of the second clamping plate (20), and is used to fine-adjust the distance between the first clamping plate (10) and the second clamping plate (20); A locking assembly (40), one end of which is mounted on the front side of the first clamping plate (10) and the other end of which is mounted on the front side of the second clamping plate (20), and is used to lock the device on the periphery of the pipe to be measured; A waveguide plate (50), one end of which is inserted into the interior of the mounting groove (11) and the other end of which extends upward; A tightening assembly (60) is assembled inside the first clamping plate (10), one end of which is placed outside the first clamping plate (10), and the other end of which extends toward the waveguide plate (50) and tightens its side wall against the outer wall of the pipe to be measured; A probe fixing frame (70) is sleeved on the upper end of the waveguide plate (50), and the front end of the probe fixing frame is used to fix the sensor of the non-contact flow meter; The first clamping plate (10), the second clamping plate (20), the fine-tuning assembly (30), the locking assembly (40), the waveguide plate (50), the tightening assembly (60) and the probe fixing frame (70) constitute the upper part of the device, and the lower part of the device has the same structure as the upper part and is arranged in a central symmetric manner. The two are assembled and connected via a limit shaft (80). The limit shaft (80) is designed as a stepped shaft structure, and its two ends are respectively arranged through the first supporting sleeve (12) and the second supporting sleeve (21).

2. A non-contact flow meter installation device according to claim 1, characterized in that: The fine-tuning component (30) comprises: A fine-tuning screw (31), one end of which is assembled in the double-layer structure of the first clamping plate (10), and the other end of which is assembled in the double-layer structure of the second clamping plate (20); A fine-tuning nut (32) is sleeved on the periphery of the fine-tuning screw (31) and is used to control the telescopic length of the fine-tuning screw (31).

3. A non-contact flow meter installation device according to claim 2, characterized in that: The locking assembly (40) comprises: A locking screw (41) is arranged on the opposite side of the fine-tuning screw (31), one end of which is assembled in the double-layer structure of the first clamping plate (10), and the other end of which extends toward the second clamping plate (20) and has a vertical through hole; The rotating shaft (42) passes through the double-layer structure of the second clamping plate (20) and is assembled in the through hole of the locking screw (41).

4. A non-contact flow meter installation device according to claim 3, characterized in that: A metal coupling sheet (51) is arranged at the contact portion between the waveguide plate (50) and the pipe to be measured, so as to enhance the conduction effect of the waveguide plate (50), thereby improving the measurement accuracy.

5. A non-contact flow meter installation device according to claim 4, characterized in that: The locking assembly (40) comprises: A square nut (61) fixedly disposed in the double-layer structure of the first clamping plate (10); A tightening bolt (62) is assembled in the square nut (61), one end of which is placed on the outside of the first clamping plate (10) and the other end of which extends toward the waveguide plate (50) to tighten it; An elastic plate (63) is arranged between the tightening bolt (62) and the waveguide plate (50) and is used to buffer the force of the tightening bolt (62) to prevent it from causing damage to the waveguide plate (50).

6. A method for installing a non-contact flow meter installation device, characterized in that: A non-contact flow meter installation device according to claim 5, comprising the following steps: Step 1. Determine the upstream pipe end face, and lock the first clamping plate (10) and the second clamping plate (20) on the periphery of the pipe to be measured by tightening the nut on the locking screw (41); Step 2. Hold the middle of the limit shaft (80), measure the distance between the first clamping plate (10) and the second clamping plate (20), and compare it with the standard value required by the technical requirements. If it does not meet the standard, adjust the fine-tuning nut (32) so that the inner diameter of the device is consistent with the outer diameter of the pipe to be measured; Step 3. Grinding the portion of the measured pipeline where the waveguide plate (50) is installed to make it flat and smooth, with the maximum grinding thickness being no greater than 0.2 mm; Step 4. Fix one side of the metal coupling sheet (51) with tape and pre-stick it to the contact portion between the waveguide plate (50) and the pipe to be measured, then insert the waveguide plate (50) into the mounting groove (11), use the tightening bolt (62) to push the metal coupling sheet (51) in the direction of the pipe to be measured, and finally completely press the waveguide plate (50) onto the metal coupling sheet (51); Step 5. According to the installation position of the pipeline to be measured, evenly apply a high-temperature coupling agent on the contact surface between the waveguide plate (50) and the sensor, and install the sensor on the probe fixing frame (70); Step 6. Use heat-insulating cotton to cover the lower half of the waveguide plate (50), leaving the upper half of the waveguide plate (50) and the sensor exposed to the environment, and avoid collision and squeezing of the device and the sensor of the non-contact flow meter during the covering process.

Images