Device for detecting metal impurities in steel pipe on line
By using an online detection device that utilizes the principle of electromagnetic induction to detect metal impurities inside steel pipes, the problem of low efficiency in manual inspection during galvanized steel pipe production has been solved, achieving efficient and accurate automated inspection and cleaning.
Patent Information
- Application Number
- CN202423094703.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-16
AI Technical Summary
In existing technologies, inadequate internal blowing during the production of galvanized steel pipes leads to metal residues. Manual inspection is inefficient and prone to fatigue, making it difficult to accurately detect metal impurities in small-diameter pipe fittings.
Design an online detection device, including a detection frame, a detection probe and a processing unit, to detect metal debris inside steel pipes using the principle of electromagnetic induction, and to achieve automated detection and air blowing cleaning through a controller, display and alarm.
It enables efficient and automated testing in the steel pipe production process, reducing missed and incorrect inspections, and improving testing efficiency and accuracy.
Smart Images
Figure CN223526516U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to metal detection technical field, concretely relates to a device for detecting the metal impurities in the steel pipe. BACKGROUND
[0002] The zinc-coated steel pipe will have metal residues such as zinc blocks left in the pipe due to the failure of internal blowing and other reasons during the production process. If the residues are not treated in time, there will be risks such as pipe blockage in engineering applications.
[0003] Currently, the impurities are mainly treated by visual observation and compressed gas blowing by manual operation, which requires detection of each pipe, has low efficiency, and is prone to fatigue and inaccurate detection. For small-diameter pipes, it is more likely to miss or misjudge. UTILITY MODEL CONTENT
[0004] The utility model aims to provide a device for detecting the metal impurities in the steel pipe, which can effectively detect the metal impurities left in the pipe and has high detection efficiency.
[0005] The utility model solves the technical problems by adopting the technical scheme of a device for detecting the metal impurities in the steel pipe, which includes a detection frame and a processing unit for controlling external equipment according to the detection results of the detection frame. The detection frame is built-in with a detection probe, which is used to detect the metal impurities left in the pipe of the steel pipe passing through the detection frame. The detection frame is electrically connected to the processing unit.
[0006] Further, the external equipment includes a conveying mechanism for driving the steel pipe to pass through the detection frame. The conveying mechanism is located on both sides of the detection frame or passes through the detection frame.
[0007] Further, the conveying mechanism is a conveyor belt, which stably passes through the detection frame, so that the steel pipe carried on the conveyor belt passes through the detection frame.
[0008] Further, the processing unit is electrically connected to the control end of the driving mechanism of the conveyor belt.
[0009] Further, the external equipment includes a blowing mechanism for blowing gas into the steel pipe. The processing unit is electrically connected to the control end of the blowing mechanism.
[0010] Further, the detection probe includes a first receiving probe, a transmitting probe, and a second receiving probe. The transmitting probe is located between the first receiving probe and the second receiving probe, and the first receiving probe and the second receiving probe are symmetrically arranged on both sides of the transmitting probe.
[0011] Further, the first receiving probe and the second receiving probe are annular coils, the coils of the first receiving probe and the second receiving probe are oppositely wound, and the magnetic field generated by the first receiving probe is left-right symmetrical with the magnetic field generated by the second receiving probe and the magnetic fields are opposite.
[0012] Further, the transmitting probe is an annular coil, the coil of the transmitting probe is connected with an alternating current intermediate frequency signal, the power of the alternating current intermediate frequency signal is a first power, the power of the alternating current signal connected with the coils of the first receiving probe and the second receiving probe is a second power, and the first power is greater than the second power.
[0013] Further, the detection frame further comprises a controller, a display and an alarm, the first receiving probe, the transmitting probe and the second receiving probe are electrically connected with the controller, and the display and the alarm are electrically connected with the controller.
[0014] Further, the controller comprises a signal processing module, the signal processing module is electrically connected with the detection probe, and the signal processing module is electrically connected with the processing unit, the display and the alarm.
[0015] The device for detecting metal impurities in a steel pipe online has the advantages that the device can directly detect in the production process of the steel pipe, and the device can alarm and prompt after detecting the metal impurities in the pipe, so that the pipe with metal impurities can be effectively screened, and the detection efficiency is improved.
[0016] The device for detecting metal impurities in a steel pipe online can directly detect in the production process of the steel pipe, and the device can alarm and prompt after detecting the metal impurities in the pipe, so that the pipe with metal impurities can be effectively screened, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings incorporated into and forming a part of the specification illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application. In the drawings, like reference numerals are used to indicate like elements throughout the several views. The drawings in the following description are of some embodiments of the present application, and are not all the embodiments. Those skilled in the art can obtain other drawings according to the drawings without creative work.
[0018] Figure 1 A production line layout diagram of the device for detecting metal impurities in a steel pipe online;
[0019] Figure 2 A schematic view of the steel pipe passing through the detection frame;
[0020] Figure 3 A distribution schematic view of the detection probe and the steel pipe;
[0021] Figure 4 A principle block diagram of the detection device.
[0022] In the figure: 1, detection frame; 2, conveying mechanism; 3, processing unit; 4, steel pipe; 5, detection probe; 6, display; 7, alarm; 8, controller; L1, first receiving probe; L2, transmitting probe; L3, second receiving probe. DETAILED DESCRIPTION
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application and the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without paying any creative labor, and other embodiments can also be obtained. In addition, the design direction is only to represent the relative position relationship between the components, not the absolute position relationship.
[0024] The embodiment of the present application provides a device for detecting metal impurities in a steel pipe online, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , mainly including a detection frame 1 and a processing unit 3 for controlling external equipment according to the detection result of the detection frame 1, the detection frame 1 is built-in detection probe 5, the detection probe 5 is used for detecting the residual metal impurities in the pipe of the steel pipe 4 passing through the detection frame 1, the detection frame 1 is electrically connected with the processing unit 3.
[0025] In this application, the steel pipe 4 passing through the detection frame 1 has a plurality of feasible implementation manners, which can be a conventional power driven, also can be manually implemented, for the sake of efficiency, taking the power driven as an example for description.
[0026] The device for driving the steel pipe 4 to pass through the detection frame 1 can belong to the external equipment, such as the conveying mechanism for driving the steel pipe 4 to pass through the detection frame 1, since the steel pipe 4 needs to pass through the detection frame 1, the detection frame 1 is a complete frame structure, therefore, the conveying mechanism 2 can be a two-segment structure, which is arranged on both sides of the detection frame 1, when conveying the steel pipe 4, the detection frame 1 is arranged in the middle, the steel pipe 4 can pass through the detection frame 1 in the air; or, the conveying mechanism 2 directly passes through the detection frame 1, but the conveying mechanism 2 passing through the detection frame 1 should be more strictly required to prevent misjudgment, such as preferably not including metal components.
[0027] In a specific embodiment, the conveying mechanism 2 can be a single-segment conveyor belt, the conveyor belt passes through the detection frame 1 stably, the steel pipe 4 is carried on the conveyor belt and runs, so that the steel pipe 4 can pass through the detection frame 1 synchronously when running, as shown in Figure 1 、 Figure 2 .
[0028] Exemplarily, two sections of the conveying belt can be arranged on the two sides of the detection frame 1, and the interval between the two sections of the conveying belt is the detection frame 1. The interval should be much smaller than the length of the steel pipe 4 to be detected, so that the end of the steel pipe 4 can be hung from one section of the conveying belt to the other section of the conveying belt to complete the conversion and cooperation of the driving force. If necessary, the running speeds of the two sections of the conveying belt are consistent. If possible, the heights of the two sections of the conveying belt are consistent. Of course, the conveying belt located downstream can be slightly lower than the conveying belt located upstream to make the steel pipe 4 transition smoothly.
[0029] The detection device of the present application can be directly applied to the production line to detect the steel pipe 4 during the production process. Only one detection frame 1 needs to be mounted at a suitable position of the production line, and the steel pipe 4 can pass through it. Based on this, the conveying mechanism 2 can also be a driving structure on the production line.
[0030] In the embodiment of the present application, the external device can also include a blowing mechanism for cleaning the metal debris remaining in the steel pipe 4. The blowing mechanism blows air into the steel pipe 4 to blow the metal debris remaining in the pipe out of the steel pipe 4.
[0031] When the blowing mechanism is an automatic operation device, the processing unit 3 can be electrically connected to the blowing mechanism. The detection frame 1 sends the detection result of the steel pipe 4 to the blowing mechanism to confirm that the current steel pipe 4 is a steel pipe to be processed, and the blowing mechanism performs blowing operation on it. For the steel pipe 4 with normal detection result, no blowing operation is performed.
[0032] When the blowing mechanism is a non-automatic operation device, manual assistance can be performed. Based on the detection structure of the detection frame 1, the blowing operation is performed on the currently detected steel pipe 4.
[0033] It can be understood that the width of the detection frame 1 can be much larger than the diameter of the steel pipe 4. Multiple steel pipes 4 can pass through at a time, that is, multiple steel pipes 4 can be detected at the same time. When a certain steel pipe 4 has metal debris, blowing operation can be performed on the currently detected steel pipe.
[0034] In the embodiment of the present application, the detection frame 1 is mounted with a detection probe 5. The detection probe 5 can be a corresponding sensor to directly detect the structure of the steel pipe 4, and then screen whether there is debris in the steel pipe 4, which is not limited to metal debris. However, the cost of such sensors or devices is relatively high.
[0035] Therefore, the detection probe 5 can use electromagnetic induction, eddy current effect and other principles to detect the metal debris in the steel pipe 4 to achieve the detection purpose at a lower cost.
[0036] In one embodiment, the detection probe 5 comprises a first receiving probe L1, a transmitting probe L2, and a second receiving probe L3, the transmitting probe L2 is located between the first receiving probe L1 and the second receiving probe L3, and the first receiving probe L1 and the second receiving probe L3 are symmetrically arranged on both sides of the transmitting probe L2.
[0037] In one embodiment, the first receiving probe L1 and the second receiving probe L3 are annular coils, and the coils of the first receiving probe L1 and the second receiving probe L3 are oppositely wound, so that the magnetic field generated by the first receiving probe L1 is left-right symmetric with the magnetic field generated by the second receiving probe L3 and the magnetic fields are opposite.
[0038] In one embodiment, the transmitting probe L2 is an annular coil, the coil of the transmitting probe L2 is connected with an alternating current intermediate frequency signal, the power of the alternating current intermediate frequency signal is a first power, the power of the alternating current signal connected with the coil of the first receiving probe L1 and the second receiving probe L3 is a second power, and the first power is greater than the second power.
[0039] In one embodiment, the detection frame 1 can further integrate a controller 8, a display 6, an alarm 7 and other functional modules, the first receiving probe, the transmitting probe, and the second receiving probe are electrically connected with the controller 8, and the display 6 and the alarm 7 are electrically connected with the controller 8.
[0040] The controller 8 comprises a signal processing module, the signal processing module is electrically connected with the detection probe 5, and the signal processing module is electrically connected with the processing unit 3, the display 6, and the alarm 7.
[0041] The display 6 can be used to display the detection results and the starting conditions of the external equipment, and the alarm 7 can be used to issue alarms according to the detection results, including but not limited to sound, light and other forms of alarms.
[0042] The inductive signals of the three coils of the detection probe 5 can be respectively connected to the controller 8, and the signal processing module carried in the controller 8 can be used to determine whether there is metal impurity.
[0043] Please refer to Figure 4 The detection frame 1 transmits the inductive signals to the controller 8, and the controller 8 makes a decision: the processing unit 3 sends a processing signal to the external equipment to control the external equipment to make corresponding actions; the detection results and the processing state of the corresponding external equipment are displayed on the display 6, such as stopping the operation of the conveying belt and implementing the blowing of the blowing mechanism; and the alarm 7 is driven to issue an alarm.
[0044] In a specific implementation, three balanced coils are taken as an example, and L1, L2 and L3 are used to represent the first receiving probe, the transmitting probe and the second receiving probe. That is, one transmitting probe L2, two receiving probes L1 and L3, and the same spacing between the three coils.
[0045] The coils of L1 and L3 are oppositely wound to keep the electromagnetic induction balanced. A large AC intermediate frequency signal is applied to the L2 coil, and an electromagnetic field is generated around the L2 coil according to the electromagnetic effect. L1 and L3 are left-right symmetrical and the magnetic fields are opposite, and the electromagnetic fields cancel each other out, so no induction signal is generated.
[0046] When the steel pipe to be detected enters the coil, the magnetically conductive metal will generate an eddy current effect under the electromagnetic field, L1 and L3 generate a differential signal output, and the steel pipe is detected.
[0047] When the steel pipe to be detected completely enters the coil, the magnetic fields sensed by L1 and L3 are completely the same, and no signal is generated.
[0048] A differential signal alarm is generated at the moment when the steel pipe just enters and just exits. This interval can be eliminated by software filtering to prevent false alarms.
[0049] When there is metal debris in the steel pipe to be detected, the eddy current generated by the metal debris will break the dynamic balance of the receiving coil, and a differential signal is generated at once. This differential signal indicates that there is metal debris in the steel pipe 4. This differential signal is processed by amplification and transmitted to the controller 8 to issue an alarm signal. This alarm signal is the expected alarm prompt, indicating that there is metal debris in the currently detected steel pipe 4.
[0050] Through the above detection principle, real-time detection of metal debris in the pipe can be realized.
[0051] In this application, the induction signals of the three coils under the jurisdiction of the detection probe 5 can be processed and amplified by a series of circuits, such as the coil excitation signal circuit, the power amplifier circuit, the differential circuit, the received signal processing circuit, the digital-to-analog conversion circuit, the single-chip microcomputer peripheral circuit, the man-machine exchange module, and the relay output circuit. The above circuits and other functional units (such as filter circuits) can form a signal processing module, and cooperate with a single-chip microcomputer or other processors to constitute a controller 8.
[0052] It should be noted that, in this text, relational terms such as first and second are used merely to distinguish one entity or action from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or actions. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "includes one" does not exclude the presence of another identical element in the process, method, article or equipment that includes the element.
[0053] The above is further detailed description of the utility model made in combination with specific preferred embodiments, and the specific embodiments of the utility model cannot be determined to be limited to these descriptions. For ordinary skilled persons in the technical field to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all of them should be regarded as belonging to the protection scope of the utility model.
Claims
1. An apparatus for on-line detection of metal inclusions in a steel pipe, characterized by, The application relates to a detection frame (1) and a processing unit (3) for controlling external equipment according to the detection result of the detection frame (1), wherein the detection frame (1) is internally provided with a detection probe (5) for detecting metal impurities remaining in a steel pipe (4) passing through the detection frame (1), and the detection frame (1) is electrically connected with the processing unit (3).
2. The apparatus for detecting metal inclusions in a steel pipe on-line according to claim 1, wherein The external equipment comprises conveying mechanisms (2) for driving the steel pipe (4) to pass through the detection frame (1), and the conveying mechanisms (2) are located on both sides of the detection frame (1) or pass through the detection frame (1).
3. A device for detecting metal inclusions in a steel pipe on-line according to claim 2, wherein The conveying mechanisms (2) are conveyer belts which stably pass through the detection frame (1) and make the steel pipe (4) carried on the conveyer belts pass through the detection frame (1).
4. The apparatus for detecting metal inclusions in a steel pipe on-line according to claim 3, wherein The processing unit (3) is electrically connected with the control end of the driving mechanism of the conveyer belt.
5. The apparatus for detecting metal inclusions in a steel pipe according to claim 1, wherein The external equipment comprises a blowing mechanism for blowing gas into the steel pipe (4), and the processing unit (3) is electrically connected with the control end of the blowing mechanism.
6. The apparatus for detecting metal inclusions in a steel pipe according to claim 1, wherein The detection probe (5) comprises a first receiving probe, a transmitting probe and a second receiving probe, the transmitting probe is located between the first receiving probe and the second receiving probe, and the first receiving probe and the second receiving probe are symmetrically arranged on both sides of the transmitting probe.
7. A device for detecting metal inclusions in a steel pipe on-line according to claim 6, wherein The first receiving probe and the second receiving probe are annular coils, the coils of the first receiving probe and the second receiving probe are oppositely wound, the magnetic field generated by the first receiving probe is left-right symmetrical with the magnetic field generated by the second receiving probe and the magnetic fields are opposite.
8. The apparatus for detecting metal inclusions in a steel pipe according to claim 7, wherein The transmitting probe is an annular coil, an alternating current intermediate frequency signal is passed through the coil of the transmitting probe, the power of the alternating current intermediate frequency signal is a first power, the power of the alternating current signal passed through the coils of the first receiving probe and the second receiving probe is a second power, and the first power is greater than the second power.
9. The apparatus for detecting metal inclusions in a steel pipe according to claim 8, wherein The detection frame (1) further comprises a controller (8), a display (6) and an alarm (7), the first receiving probe, the transmitting probe and the second receiving probe are electrically connected with the controller (8), and the display (6) and the alarm (7) are electrically connected with the controller (8).
10. The apparatus for detecting metal inclusions in a steel pipe on-line according to claim 9, wherein The controller (8) comprises a signal processing module, the signal processing module is electrically connected with the detection probe (5), and the signal processing module is electrically connected with the processing unit (3), the display (6) and the alarm (7).