CN213794728U - Conditioning circuit for high-grade pipeline steel arc welding machine - Google Patents
Conditioning circuit for high-grade pipeline steel arc welding machine Download PDFInfo
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- CN213794728U CN213794728U CN202022667998.4U CN202022667998U CN213794728U CN 213794728 U CN213794728 U CN 213794728U CN 202022667998 U CN202022667998 U CN 202022667998U CN 213794728 U CN213794728 U CN 213794728U
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Abstract
The utility model discloses a conditioning circuit for a high-grade pipeline steel arc welding machine, which comprises an acoustic signal conditioning circuit and an optical signal conditioning circuit, wherein the acoustic signal conditioning circuit comprises an acoustic signal amplifying circuit and a filter circuit, the acoustic signal amplifying circuit is connected with an external sound sensor, the output end of the acoustic signal amplifying circuit is connected with the filter circuit, and the output end of the filter circuit is connected with an external acquisition card; the optical signal conditioning circuit comprises an optical signal amplifying circuit and a low-pass filter circuit, the optical signal amplifying circuit is connected with the optical sensor, the output end of the optical signal amplifying circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with an external acquisition card. The utility model discloses set up the conditioning circuit, the external collection card of being convenient for can gather sound, light sensor's signal variation among the welding process to guarantee the real-time supervision of electric arc welding machine when the welding, improve the welding quality of high-level pipeline steel.
Description
Technical Field
The utility model relates to a high-grade pipeline steel welding field especially relates to a high-grade pipeline steel is modulate circuit for electric arc welding machine.
Background
With the rapid development of oil and gas pipeline construction, pipeline steel is continuously developed towards the directions of high steel grade, high strength and toughness, high pressure, large pipe diameter, large wall thickness and the like, so that the pipeline construction cost is reduced, and the oil and gas conveying efficiency and safety are improved. Welding is a key and core technology for long-distance pipeline construction, and welding technologies such as Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), Submerged Arc Welding (SAW) and the like are mainly adopted at present.
Due to the limitation of the energy density and the penetration capability of electric arc welding, in the welding of pipeline steel with large pipe diameter and large wall thickness, the welding quality is ensured and the welding efficiency is improved by mainly adopting increased heat input and multi-layer multi-pass welding, but the accompanying phenomena of wide heat affected zone and structural deterioration of coarse crystal zone cause the insufficient obdurability of the welding joint, the service reliability and durability of the pipeline steel welding joint are seriously influenced, and the requirements of future large-pipe diameter and large wall thickness pipeline construction on the obdurability and efficiency of the pipeline steel welding can not be met. Therefore, the laser-arc hybrid welding method is generally used for the welding treatment of high-grade pipeline steel. The stability of the earlier electric arc welder is then critical to the success of the final high grade pipeline steel weld. The arc welder is affected by the surface condition of the workpiece, assembly errors and the like in the welding process, so that the real-time monitoring is an effective method for ensuring the welding quality in the welding process. Acoustic and optical sensors are typically used to obtain characteristic signals of the welding process to enable real-time monitoring of arc welding quality. On the basis of earlier stage work, proper acoustic and photoelectric sensors are selected to collect characteristic signals of the welding process, and then a set of complete welding quality monitoring system is formed through signal conditioning, signal collection and signal analysis software. The signal acquisition hardware can adopt a data acquisition card with strong commercial functions and good universality. Due to the particularity of the monitored object, a signal conditioning circuit of the system needs to process a plurality of signals, and a suitable commercial device is difficult to find, so that the design of the conditioning circuit is one of the keys of system success and failure. Therefore, in order to improve the welding quality of high-grade pipeline steel, it is very important to provide a conditioning circuit.
Disclosure of Invention
The utility model aims to provide a: in order to overcome the defects, a conditioning circuit for a high-grade pipeline steel arc welding machine is provided to improve the welding quality of pipeline steel during welding.
In order to achieve the above purpose, the technical scheme of the utility model is that: a conditioning circuit for a high-grade pipeline steel arc welding machine comprises an acoustic signal conditioning circuit and an optical signal conditioning circuit, wherein the acoustic signal conditioning circuit comprises an acoustic signal amplifying circuit and a filter circuit, the acoustic signal amplifying circuit is connected with an external sound sensor, the output end of the acoustic signal amplifying circuit is connected with the filter circuit, and the output end of the filter circuit is connected with an external acquisition card; the optical signal conditioning circuit comprises an optical signal amplifying circuit and a low-pass filter circuit, the optical signal amplifying circuit is connected with the optical sensor, the output end of the optical signal amplifying circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with an external acquisition card.
Further, the acoustic signal amplifying circuit comprises resistors R3-R5, capacitors C4-C6 and a processor U2, one end of the capacitor C4 serves as an input end and is connected with an external sound sensor, one end of the capacitor C4 is further connected to one end of the resistor R3, the other end of the capacitor C4 is connected to one end of a resistor R4 and a pin 4 of the processor U2, the other end of the resistor R4 is connected to a pin 8 of the processor U2, a pin 5 of the processor U2 is connected to one end of a capacitor C5, a pin 2 of the processor U2 is connected to the other end of the resistor R5 and an adjustable end of the resistor R2, one end of the resistor R5 is connected to a pin 1 of the processor U2, a pin 7 of the processor U2 is connected to an external voltage and one end of the capacitor C6, the other ends of the resistors R3, the capacitors C5-C6 and a pin 3 of the processor U2 are all grounded, and a pin 6 of the processor U2 serves as an output end for outputting signals to the filter circuit.
Further, the filter circuit comprises a resistor R-R, a capacitor C-C and a processor U-U, wherein one end of the resistor R is used as an input end to be connected with an output end of the acoustic signal amplifying circuit, the other end of the resistor R is connected to one end of the resistor R-R, the other end of the resistor R is connected to one end of the capacitor C and a pin 1 of the processor U, a pin 2 of the processor U is connected to one end of the resistor R-R, the other end of the resistor R is connected to one end of the capacitor C, the other end of the capacitor C is connected to one end of the resistor R, the other ends of the resistor R, the resistor R and the capacitor C are all grounded, a pin 3 of the processor U is connected to one end of the capacitor C, the other end of the capacitor C is connected to one end of the capacitor C and one end of the resistor R, the other end of the capacitor C is connected to the pin 1 of the resistor R and the pin 2 of the processor U is connected to one end of the resistor R and the other end of the resistor R, one end of the resistor R15 is connected with the other end of the resistor R13, the other ends of the resistor R14 and the resistor R16 are both grounded, and a pin 3 of the processor U6 serves as an output end to output signals to an external acquisition card.
Further, the optical signal amplifying circuit comprises resistors R1-R2, capacitors C1-C3, a diode D1 and a processor U1, one end of the resistor R1 is connected to one ends of the diode D1 and the capacitor C1, the other end of the diode D1 is connected to external voltage, the other end of the capacitor C1 is connected to a pin 4 and a pin 8 of the processor U1, a pin 5 of the processor U1 is connected to one end of the capacitor C2, a pin 2 of the processor U1 is connected to the other end of the resistor R2 and an adjustable end of the resistor R2, one end of the resistor R2 is connected to a pin 1 of the processor U1, a pin 7 of the processor U1 is connected to the external voltage and one end of the capacitor C3, and the other ends of the capacitors C2-C3, the resistor R1 and a pin 3 of the processor U1 are all grounded; pin 6 of processor U1 outputs a signal as an output to a low pass filter circuit.
Further, the low-pass filter circuit comprises processors U3-U4, resistors R5 and capacitors C7-C9, a pin 1 of the processor U3 serves as an input end and is connected with an output end of the low-pass filter circuit, a pin 3 of the processor U3 is connected to an external voltage and one end of the capacitor C7, a pin 5 of the processor U3 is connected to a pin 1 of the processor U4, a pin 2 of the processor U4 is connected to one end of the resistor R7, one end of the resistor R6 is connected to the external voltage, the other end of the resistor R6 is connected to one end of the capacitor C8, a pin 3 of the processor U4 is connected to one end of the capacitor C9, a pin 5 of the processor U4 is connected to a pin 6 of the processor U4, the capacitors C7-C9, the other end of the resistor R7, a pin 2 of the processor U3, a pin 4 of the processor U4 and a pin 7 of the processor U4 are all grounded, and a pin 4 of the processor U4 serves as an output end to output signal to the outside.
Since the proposal is adopted, the beneficial effects of the utility model reside in that: the utility model provides a prior art's is not enough, the utility model provides a high-order pipeline steel is modulate circuit for electric arc welding machine, its benefit is:
(1) the utility model discloses set up the conditioning circuit, the external collection card of being convenient for can gather sound, light sensor's signal variation among the welding process to guarantee the real-time supervision of electric arc welding machine when the welding, improve the welding quality of high-level pipeline steel.
(2) The utility model discloses a two circuits are handled with the signal to sound, light sensor output respectively, so, different according to output signal's nature, can improve its treatment effect, guarantee the stable collection of outside collection card.
(3) In welding process, acoustic signal's variation range is great, and the signal after enlargiing so is possible to surpass the range that later stage acquisition card handled, also is possible the amplitude too little, and the acquisition card of being not convenient for is accepted, so the utility model discloses a filter circuit has designed the two poles of the earth, and the output signal of being convenient for is stable, further guarantees that the acquisition card can accurately gather the signal of sensor output for whole monitoring system can in time feedback monitoring, improves the welding quality of high-level pipeline steel.
Drawings
Fig. 1 is a schematic circuit diagram of the optical signal amplifying circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the low-pass filter circuit of the present invention.
Fig. 3 is a schematic circuit diagram of the acoustic signal amplifying circuit of the present invention.
Fig. 4 is a schematic circuit diagram of the filter circuit of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1-4, a conditioning circuit for a high-grade pipeline steel arc welding machine is arranged between an external acoustic and optical sensor and a data acquisition card, and comprises an acoustic signal conditioning circuit and an optical signal conditioning circuit, wherein the acoustic signal conditioning circuit comprises an acoustic signal amplifying circuit and a filter circuit, the optical signal conditioning circuit comprises an optical signal amplifying circuit and a low-pass filter circuit, and the conditioning circuit is used for processing data output by the sensor to ensure that signals transmitted to the acquisition card are accurate, so that the whole monitoring system can accurately feed back welding information of the arc welding machine during welding of high-grade pipeline steel, and welding quality is improved.
Specifically, the acoustic signal amplifying circuit comprises resistors R3-R5, capacitors C4-C6 and a processor U2, wherein the model of the processor U2 is INA128PA, one end of the capacitor C4 is used as the input end of the circuit to be connected with an external sound sensor, one end of the capacitor C4 is also connected with one end of the resistor R3, the other end of the capacitor C4 is connected with one end of the resistor R4 and the pin 4 of the processor U2, the other end of the resistor R4 is connected with the pin 8 of the processor U2, pin 5 of the processor U2 is connected to one end of a capacitor C5, pin 2 of the processor U2 is connected to the other end of a resistor R5 and an adjustable end thereof, one end of the resistor R5 is connected to pin 1 of the processor U2, pin 7 of the processor U2 is connected to an external voltage and one end of a capacitor C6, the resistor R3, the other ends of the capacitors C5-C6 and the pin 3 of the processor U2 are all grounded, and the pin 6 of the processor U2 serves as an output end of the circuit to output signals to the filter circuit.
The filter circuit comprises resistors R8-R16, capacitors C10-C13 and processors U5-U6, the models of the processors U5-U6 are LM358P, one end of the resistor R8 is used as an input end of the filter circuit to be connected with an output end of an acoustic signal amplifying circuit, the other end of the resistor R8 is connected to one ends of resistors R9-R10, the other end of the resistor R10 is connected to one end of a capacitor C10 and a pin 1 of the processor U5, a pin 2 of the processor U5 is connected to one ends of resistors R11-R12, the other end of the resistor R12 is connected to one end of a capacitor C3, the other end of the capacitor C13 is connected to one end of a resistor R9, the other ends of the resistors R9, R11 and the capacitor C10 are grounded, a pin 3 of the processor U10 is connected to one end of the capacitor C10, the other end of the capacitor C10 is connected to one end of the resistor R10 and the other end of the resistor R10 and the pin 10 of the processor U10, and the other end of the resistor R10 are connected to the pin 10 of the processor U10 and the other end of the resistor R10 and the pin 10, one end of the resistor R15 is connected with the other end of the resistor R13, the other ends of the resistor R14 and the resistor R16 are both grounded, and the pin 3 of the processor U6 serves as an output end of the circuit to output signals to an external acquisition card.
The optical signal amplifying circuit comprises resistors R1-R2, capacitors C1-C3, a diode D1 and a processor U1, the model of the processor U1 is INA128PA, the diode D1 is an infrared sensor, one end of a resistor R1 is connected to one ends of the diode D1 and the capacitor C1, the other end of the diode D1 is connected to external voltage, the other end of the capacitor C1 is connected to a pin 4 and a pin 8 of the processor U1, a pin 5 of the processor U1 is connected to one end of the capacitor C2, a pin 2 of the processor U1 is connected to the other end of the resistor R2 and an adjustable end of the pin, one end of the resistor R2 is connected to a pin 1 of the processor U1, a pin 7 of the processor U1 is connected to the external voltage and one end of the capacitor C3, and the capacitors C2-C3, the other end of the resistor R5 1 and a pin 3 of the processor U39 1 are; pin 6 of processor U1 outputs a signal as the output of the circuit to a low pass filter circuit.
The low-pass filter circuit comprises processors U3-U4, resistors R5 and capacitors C7-C9, the processor U3 is of a type CD4040, the processor U4 is of a type MAX293CPA, pin 1 of the processor U3 is connected as an input terminal of the circuit with an output terminal of the low-pass filter circuit, pin 3 of the processor U3 is connected to an external voltage and one end of a capacitor C7, pin 5 of the processor U3 is connected to pin 1 of the processor U4, pin 2 of the processor U4 is connected to one end of a resistor R7, one end of the resistor R6 is connected to the external voltage, the other end of the pin is connected with one end of a capacitor C8, a pin 3 of a processor U4 is connected with one end of a capacitor C9, a pin 5 of a processor U4 is connected with a pin 6 of the pin, the capacitors C7-C9, the other end of the resistor R7, the pin 2 and the pin 4 of the processor U3 and the pin 7 of the processor U4 are all grounded, and the pin 4 of the processor U4 serves as an output end of the circuit to output signals to an external acquisition card.
When the electric arc welding machine is used for welding high-grade pipeline steel, the external sound and light sensor can acquire characteristic signals of the welding process in real time so as to realize real-time monitoring of welding quality, so that stable welding is realized in the welding process, and the welding quality of the high-grade pipeline steel is improved. Specifically, when the sound sensor detects a signal, the sound sensor transmits the signal to a sound signal amplifying circuit, wherein a resistor R3 and a capacitor C3 are used for filtering an unwanted signal in the input signal to prevent the unwanted signal from interfering with the stable operation of a subsequent circuit, a resistor R4 is connected to a pin 8 of a processor U2 and plays a role in voltage stabilization and current limitation to prevent the normal operation of the processor U2 from being affected during the amplification process, and finally, the amplified signal is output to a filter circuit through a pin 6 of a processor U2, namely, the amplified signal is input to the filter circuit through a resistor R8, wherein resistors R9 to R10 form a voltage divider, a capacitor C10 is used as an input filter element for primarily filtering the unwanted signal existing in the amplified signal, and after the primary processing is performed through the processor U5, the signal is output to the processor U6 through a pin 3 thereof, because the amplitude of the sound signal is large during the welding process, the signal after enlargiing then probably surpasss the range that later stage acquisition card handled, also probably the amplitude is too little, the acquisition card of not being convenient for is accepted, so the utility model discloses a filter circuit has designed the two poles of the earth, the output signal of being convenient for is stable, electric capacity C11~ C12 is used for as the filter element promptly, with the miscellaneous signal that the filtering got into in treater U6, make treater U6 can normal work, resistance R13 uses as feedback resistance, signal to outside acquisition card after the pin 3 exportable processing of treater U6 so, the acquisition card of being convenient for is accurate to the acoustic signal and is gathered, accurate control in the welding process has been realized. In order to eliminate errors caused by offset currents of the processors U5-U6, direct current resistances to the ground, connected with the pins 1 and 2, of the processors are basically equal, so that the normal operation of the whole filter circuit is guaranteed.
Further, the infrared sensor, that is, the diode D1, transmits a signal to the capacitor C1 according to the intensity of the optical signal, the capacitor C1 is used for filtering the unwanted signal in the input signal, so as to avoid affecting the stable operation of the subsequent circuit, the signal is primarily amplified by the processor U1 and then output through the pin 6, and the capacitor C3 is used as a filtering element, so as to ensure the normal operation of the processor U1, and realize stable amplification. Then, optical signal after the amplification transmits to its low pass filter circuit, the utility model discloses a low pass filter circuit simple structure mainly adopts treater U3~ U4, the complicated debug circumstances of circuit in work has been avoided, signal after the amplification passes through during pin 1 of treater U3 inputs this circuit promptly, wherein electric capacity C7 is used for as filtering element, in order to avoid miscellaneous signal to bring the influence to the normal work of treater U1, guarantee its steady operation, signal after treater U3 handles exports through its pin 5 and carries out secondary treatment in treater U4, resistance R7 is connected with treater U4's pin 2, it plays steady voltage, the effect of current-limiting, avoid in the course of handling, influence treater U4's normal work, signal after the processing exports through treater U4's pin 4, be convenient for the outside acquisition card gathers optical signal.
Parts not described in the above modes can be realized by adopting or referring to the prior art.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a high-grade pipeline steel is modulate circuit for arc welding machine which characterized in that: the sound signal conditioning circuit comprises a sound signal amplifying circuit and a filter circuit, wherein the sound signal amplifying circuit is connected with an external sound sensor, the output end of the sound signal amplifying circuit is connected with the filter circuit, and the output end of the filter circuit is connected with an external acquisition card; the optical signal conditioning circuit comprises an optical signal amplifying circuit and a low-pass filter circuit, the optical signal amplifying circuit is connected with the optical sensor, the output end of the optical signal amplifying circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit is connected with an external acquisition card.
2. The conditioning circuit for a high grade pipeline steel arc welding machine according to claim 1, wherein: the acoustic signal amplifying circuit comprises resistors R3-R5, capacitors C4-C6 and a processor U2, one end of a capacitor C4 serves as an input end and is connected with an external sound sensor, one end of a capacitor C4 is further connected to one end of a resistor R3, the other end of the capacitor C4 is connected to one end of a resistor R4 and a pin 4 of the processor U2, the other end of the resistor R4 is connected to a pin 8 of the processor U2, a pin 5 of the processor U2 is connected to one end of a capacitor C5, a pin 2 of the processor U2 is connected to the other end of the resistor R5 and an adjustable end of the resistor R5, one end of the resistor R5 is connected to a pin 1 of the processor U2, a pin 7 of the processor U2 is connected to an external voltage and one end of the capacitor C6, the other ends of the resistors R3, the capacitors C5-C6 and a pin 3 of the processor U2 are all grounded, and a pin 6 of the processor U2 serves as an output end and outputs signals to a filter circuit.
3. The conditioning circuit for a high grade pipeline steel arc welding machine according to claim 2, wherein: the filter circuit comprises resistors R8-R16, capacitors C10-C13 and processors U5-U6, one end of the resistor R8 serves as an input end and is connected with an output end of the acoustic signal amplifying circuit, the other end of the resistor R8 is connected to one ends of resistors R9-R10, the other end of the resistor R10 is connected to one end of the capacitor C10 and a pin 1 of the processor U5, a pin 2 of the processor U5 is connected to one ends of the resistors R11-R12, the other end of the resistor R12 is connected to one end of a capacitor C3, the other end of the capacitor C13 is connected to one end of a resistor R9, the other ends of the resistors R9, R11 and the capacitor C10 are grounded, a pin 3 of the processor U5 is connected to one end of a capacitor C11, the other end of a capacitor C11 is connected to one ends of a capacitor C12 and a resistor R13, the other end of a resistor C12 is connected to a pin R14 and a pin 1 of the processor U6, and the other end of a resistor U6 are, one end of the resistor R15 is connected with the other end of the resistor R13, the other ends of the resistor R14 and the resistor R16 are both grounded, and a pin 3 of the processor U6 serves as an output end to output signals to an external acquisition card.
4. The conditioning circuit for a high grade pipeline steel arc welding machine according to claim 1, wherein: the optical signal amplifying circuit comprises resistors R1-R2, capacitors C1-C3, a diode D1 and a processor U1, one end of a resistor R1 is connected to one ends of the diode D1 and the capacitor C1, the other end of a diode D1 is connected to external voltage, the other end of the capacitor C1 is connected to a pin 4 and a pin 8 of a processor U1, a pin 5 of the processor U1 is connected to one end of a capacitor C2, a pin 2 of the processor U1 is connected to the other end of the resistor R2 and an adjustable end of the resistor R2, one end of a resistor R2 is connected to a pin 1 of the processor U1, a pin 7 of the processor U1 is connected to the external voltage and one end of the capacitor C3, and the other ends of the capacitors C2-C3, the resistor R1 and a pin 3 of the processor U1 are all grounded; pin 6 of processor U1 outputs a signal as an output to a low pass filter circuit.
5. The conditioning circuit for a high grade pipeline steel arc welding machine according to claim 4, wherein: the low-pass filter circuit comprises processors U3-U4, resistors R5 and capacitors C7-C9, a pin 1 of a processor U3 serves as an input end and is connected with an output end of the low-pass filter circuit, a pin 3 of a processor U3 is connected to an external voltage and one end of a capacitor C7, a pin 5 of the processor U3 is connected to a pin 1 of a processor U4, a pin 2 of the processor U4 is connected to one end of a resistor R7, one end of the resistor R6 is connected to the external voltage, the other end of the resistor R6 is connected to one end of a capacitor C8, a pin 3 of the processor U4 is connected to one end of a capacitor C9, a pin 5 of the processor U4 is connected to a pin 6 of the processor U4, the other ends of the capacitors C7-C9 and the resistor R7, a pin 2 and pin 2, a pin 4 and a pin 7 of the processor U3 and a pin 7 of the processor U4 are all grounded, and a pin 4 of the processor U4 serves as an output end to an external acquisition card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022667998.4U CN213794728U (en) | 2020-11-18 | 2020-11-18 | Conditioning circuit for high-grade pipeline steel arc welding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022667998.4U CN213794728U (en) | 2020-11-18 | 2020-11-18 | Conditioning circuit for high-grade pipeline steel arc welding machine |
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| CN213794728U true CN213794728U (en) | 2021-07-27 |
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