A device for centering and installing a transducer sleeve in a pipeline ultrasonic flowmeter

Abstract

The invention belongs to the technical field of ultrasonic flowmeters. In order to solve the problem of low installation efficiency of existing transducer sleeves, a centering installation device for a transducer sleeve in a pipeline ultrasonic flowmeter is proposed, comprising: a machine body comprising a lead screw, a moving device arranged on the lead screw, and a visual recognition device arranged on the moving device; the moving device comprising a slider, an electric push rod arranged on the slider, and a positioning sleeve arranged at the end of the electric push rod; the visual recognition device is used to collect the position and inclination angle information of the machine body and feed it back to a control system; claws are arranged at both ends of the machine body, and are used to fix the machine body in the ultrasonic flowmeter body; the control system is used to control the movement and rotation angle of the moving device according to the received feedback information, so that the positioning sleeve is aligned with the transducer sleeve fixing hole, thereby improving the operation efficiency of ultrasonic transducer sleeve welding.

Description

Technical Field

[0001] The invention belongs to the technical field of ultrasonic flowmeters, and in particular relates to a centering installation device for a transducer sleeve in a pipeline ultrasonic flowmeter. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The main feedwater pipe ultrasonic flowmeter is a device used to measure the flow of the main feedwater pipe of a nuclear power plant with high precision. It is an important device for a nuclear power plant to safely and reliably reduce the control margin of a circuit and improve economic benefits. The transducer is a key component used for measurement in an ultrasonic flowmeter. It is symmetrically arranged around the flowmeter body. Two transducers in the same path form a straight measurement path, and the measurement path is at a 45-degree angle to the center line of the pipe axis. The accuracy of the installation position of the transducer will affect the measurement accuracy of the ultrasonic flowmeter, so the positioning of the sleeve used to install the transducer is particularly important. The transducer sleeve needs to be fixed to the flowmeter body by welding, and a gap needs to be reserved between it and the flowmeter body to avoid the influence of the vibration wave of the pipeline on the measurement. For ultrasonic flowmeters with low measurement accuracy requirements, the sleeve is generally positioned and welded using the cooperation here. However, for high-precision flow meters, the transducer position accuracy may be low, the two transducers in the same path may have poor straightness, or the measurement path may not be at a 45-degree angle to the pipeline axis, thus affecting the measurement accuracy of the ultrasonic flow meter. In addition, each transducer sleeve needs to be aligned one by one during welding, which greatly affects the welding efficiency.

[0004] Therefore, how to improve the straightness and concentricity of the transducer sleeve installation during the welding of a high-precision ultrasonic flowmeter and improve the operating efficiency of the ultrasonic transducer sleeve welding is a problem that technical personnel in this field need to solve. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a centering installation device for the transducer sleeve in a pipeline ultrasonic flowmeter, which can improve the straightness and concentricity of the transducer sleeve installation during the welding of a high-precision ultrasonic flowmeter, and improve the operating efficiency of the ultrasonic transducer sleeve welding.

[0006] To achieve the above-mentioned object, the first aspect of the present invention provides a device for centering and installing a transducer sleeve in a pipeline ultrasonic flowmeter, comprising: a body, a clamping claw and a control system;

[0007] The machine body includes a screw rod, a moving device arranged on the screw rod, and a visual recognition device arranged on the moving device;

[0008] The moving device comprises a slider, an electric push rod arranged on the slider, and a positioning sleeve arranged at the end of the electric push rod;

[0009] The visual recognition device is used to collect the position and tilt angle information of the machine body and feed it back to the control system;

[0010] The claws are arranged at both ends of the body and are used to fix the body in the main body of the ultrasonic flowmeter;

[0011] The control system is used to control the movement and rotation angle of the moving device according to the feedback information received from the visual recognition device, so as to align the positioning sleeve with the transducer sleeve fixing hole.

[0012] One or more of the above technical solutions have the following beneficial effects:

[0013] In the present invention, the setting of the claws can quickly and accurately locate the center of the ultrasonic flowmeter body. After positioning, it can be firmly fixed and the stability of the body can be guaranteed during the work process, thereby improving the positioning accuracy and work efficiency; the screw rod is connected to the moving device, which can realize the axial movement of the moving device in the ultrasonic flowmeter body; the setting of the electric push rod can extend into or out of the transducer sleeve fixing hole after the positioning sleeve is aligned with the transducer sleeve fixing hole; through real-time feedback from the visual recognition device, during the centering process, the control system can automatically adjust the position and angle of the body according to the feedback information of the visual recognition device to ensure the positioning accuracy.

[0014] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0016] Figure 1 It is a schematic isometric view of the structure of an automatic centering tool for welding the casing of a pipeline ultrasonic flowmeter transducer in the first embodiment of the present invention;

[0017] Figure 2 It is a schematic top view of the structure of the automatic centering tool for welding the casing of the transducer of the pipeline ultrasonic flowmeter in the first embodiment of the present invention;

[0018] Figure 3 It is a schematic top view of the machine body structure in the first embodiment of the present invention;

[0019] Figure 4 This is a schematic axonometric diagram of the machine body structure in Embodiment 1 of the present invention;

[0020] Figure 5 It is a schematic diagram of the installation of an automatic centering tool for welding the transducer casing of a pipeline ultrasonic flowmeter in the first embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the coordination between the positioning sleeve and the transducer sleeve in the first embodiment of the present invention;

[0022] In the figure, 1. claw; 2. high-precision ball screw; 3. body; 4. stepper motor; 5. electric rotating disk; 6. electric push rod; 7. positioning sleeve; 8. mounting plate; 9. electric push rod motor; 10. visual recognition sensor; 11. slider; 12. ultrasonic flow meter body; 13. transducer sleeve. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0024] It should be noted that the terms used herein are for describing specific embodiments only and are not intended to be limiting of exemplary embodiments according to the present invention.

[0025] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0026] Embodiment 1

[0027] like Figure 1-Figure 6 As shown, this embodiment discloses a centering installation device for a transducer sleeve in a pipeline ultrasonic flowmeter, comprising: a body 3, a clamping claw 1 and a control system;

[0028] The machine body 3 includes a screw rod, a moving device arranged on the screw rod, and a visual recognition device arranged on the moving device;

[0029] The moving device includes a slider 11, an electric push rod 6 arranged on the slider 11, and a positioning sleeve 7 arranged at the end of the electric push rod 6;

[0030] A visual recognition device, used to collect the position and tilt angle information of the body 3 and feed it back to the control system;

[0031] The claws 1 are arranged at both ends of the body 3 and are used to fix the body 3 in the main body of the ultrasonic flowmeter;

[0032] The control system is used to control the movement and rotation angle of the moving device according to the feedback information received from the visual recognition device, so as to align the positioning sleeve 7 with the transducer sleeve fixing hole.

[0033] In this embodiment, the center of the ultrasonic flowmeter body can be quickly and accurately located through the claws. After positioning, it can be firmly fixed and the stability of the body can be guaranteed during the work process, thereby improving the positioning accuracy and work efficiency; the screw rod is connected to the moving device, and the moving device can be axially moved in the ultrasonic flowmeter body; through real-time feedback from the visual recognition device, during the centering process, the control system can automatically adjust the position and angle of the body according to the feedback information of the visual recognition device to ensure the positioning accuracy.

[0034] In this embodiment, the moving device includes a slider 11 , a mounting plate 8 , an electric push rod 6 and a positioning sleeve 7 .

[0035] Specifically, the slider 11 is connected to the screw rod, and mounting plates 8 are installed on the upper and lower sides of the body 3. The electric push rod 6 is fixed on the mounting plate 8, and the electric push rod 6 is driven to extend and retract by the electric push rod motor 9; a positioning sleeve 7 is connected to the end of the electric push rod 6, and the positioning sleeve 7 and the transducer sleeve fixing hole of the ultrasonic flowmeter body 12 and the transducer sleeve 13 are in a matching relationship. The positioning sleeve 7 can be driven to extend or withdraw from the transducer sleeve fixing hole of the ultrasonic flowmeter body 12 through the extension and retraction of the electric push rod 6.

[0036] The screw rod can adopt a high-precision ball screw 2, which is fixedly connected to the slider 11. The high-precision ball screw 2 is driven by a stepper motor to drive the slider 11 to move, so that the body 3 can move axially in the pipeline; the stepper motor is automatically controlled by the control system, and the body position is adjusted according to the feedback signal of the body vision sensor detection information.

[0037] Furthermore, four-way electric push rods are respectively installed on the mounting plates 8 on the upper and lower sides of the body 3, and the electric push rods 6 on the upper and lower sides are respectively in the same horizontal plane.

[0038] In this embodiment, the visual recognition device specifically adopts a visual recognition sensor 10, which is installed on the upper and lower sides of the body 3. The visual recognition sensor 10 collects the position and tilt angle information of the body 3 and feeds the information back to the control system in real time.

[0039] In this embodiment, the claw 1 is a three-jaw external chuck, and the claw 1 is pressed against the inner wall of the ultrasonic flowmeter body 12, so that the body 3 can be firmly fixed in the ultrasonic flowmeter body 12. A claw 1 is used at each end of the body 3 to avoid shaking of the body 3 during operation, and the center of the body 3 can be ensured to be concentric with the ultrasonic flowmeter body 12 while fixing the body 3.

[0040] In this embodiment, an electric rotating disk 5 is provided at both ends of the high-precision ball screw 2, a part of the electric rotating disk 5 is fixed on the claw 1, and the other part is connected to the high-precision ball screw 2. When the visual recognition sensor 10 recognizes that the body 3 is not level with the transducer measurement path, the control system controls the electric rotating disk 5 to rotate until the body 3 and the transducer measurement path are level. The two positioning sleeves 7 in the same measurement path are coaxial after installation, which can ensure that the transducers in the same measurement path are coaxial and accurately positioned after welding.

[0041] It can be understood that the plane where the rotating disk is located is perpendicular to the high-precision ball screw, and the angle between the direction of the electric push rod and the direction where the high-precision ball screw is located is fixed.

[0042] When the centering installation device of the transducer sleeve in the pipeline ultrasonic flowmeter of this embodiment is used, the installation device is placed in the ultrasonic flowmeter body 12, the positioning position of the body 3 needs to be within the stroke of the high-precision ball screw 2, and the body 3 is firmly fixed using the claws 1 at both ends. The position of the body 3 is confirmed according to the feedback signal of the visual recognition sensor 10. The control system automatically controls the stepper motor 4 to drive the high-precision ball screw 2 according to the feedback signal, and then drives the slider 11 to move, so that the body 3 moves axially and horizontally in the ultrasonic flowmeter body 12 until the body 3 reaches the specified position; the control system monitors the angle between the body 3 and the ultrasonic measurement path according to the visual recognition sensor 10 degrees, controls the electric rotating disk 5 to rotate the body 3 until the electric push rod 6 is in line with the measuring path; when the visual recognition sensor 10 recognizes that the body 3 has reached the specified position and the electric push rod 6 is in line with the measuring path, the control system controls the electric push rod 6 through the electric push rod motor 9 to extend the positioning sleeve 7 into the transducer sleeve fixing hole of the ultrasonic flowmeter body 12, and at this time, the transducer sleeve 13 is inserted into the transducer sleeve fixing hole from the outside of the ultrasonic flowmeter body 12 for welding; in this way, it can be ensured that the transducers of the same path in the ultrasonic flowmeter body 12 are in the same straight line, and each measuring path can meet the 45-degree angle with the axial center line of the ultrasonic flowmeter body 12.

[0043] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A device for centering and installing a transducer sleeve in a pipeline ultrasonic flowmeter, characterized in that: include: Machine body, jaws and control system; The machine body includes a screw rod, a moving device arranged on the screw rod, and a visual recognition device arranged on the moving device; The moving device comprises a slider, an electric push rod arranged on the slider, and a positioning sleeve arranged at the end of the electric push rod; The visual recognition device is used to collect the position and tilt angle information of the machine body and feed it back to the control system; The claws are arranged at both ends of the body and are used to fix the body in the main body of the ultrasonic flowmeter; The control system is used to control the movement and rotation angle of the moving device according to the feedback information received from the visual recognition device, so as to align the positioning sleeve with the transducer sleeve fixing hole.

2. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 1, characterized in that: Mounting plates are installed on the upper and lower sides of the sliding block, and the electric push rod is arranged on the mounting plates. The extension and retraction of the electric push rod drives the positioning sleeve to extend into or withdraw from the transducer sleeve fixing hole.

3. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 1, characterized in that: The slider is arranged on the screw rod, and the screw rod is driven by a stepping motor, and the screw rod drives the slider to move axially and horizontally in the ultrasonic flow meter body.

4. A device for centering and installing a transducer sleeve in a pipeline ultrasonic flowmeter according to claim 1 or 3, characterized in that: Electric rotating disks are arranged at both ends of the screw rod, and the control system controls the rotation of the electric rotating disk to drive the rotation of the screw rod.

5. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 4, characterized in that: When the machine body and the measuring path are not horizontal, the control system controls the electric rotating disk to rotate, and the electric rotating disk drives the machine body to rotate until the machine body and the measuring path reach a horizontal position.

6. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 4, characterized in that: The electric rotating disk is fixed on the claw.

7. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 2, characterized in that: The electric push rods are respectively installed on the upper and lower sides of the mounting plate, and the electric push rods are located in the same horizontal plane.

8. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 1, characterized in that: The positioning sleeve is matched with the transducer sleeve fixing hole and the transducer sleeve respectively.

9. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 1, characterized in that: The center of the machine body is arranged concentrically with the main body of the ultrasonic flowmeter.

10. The device for centering and installing the transducer sleeve in a pipeline ultrasonic flowmeter according to claim 5, characterized in that: The measuring path satisfies an angle of 45 degrees with the axial center line of the ultrasonic flow meter body.

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