CN216464629U - Automatic oil taking machine for transformer - Google Patents
Automatic oil taking machine for transformer Download PDFInfo
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- CN216464629U CN216464629U CN202122864027.3U CN202122864027U CN216464629U CN 216464629 U CN216464629 U CN 216464629U CN 202122864027 U CN202122864027 U CN 202122864027U CN 216464629 U CN216464629 U CN 216464629U
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Abstract
The utility model relates to an automatic oil taking machine for a transformer, which comprises an oil taking robot, a control part and a control part, wherein the oil taking robot is provided with a walking part and is used for butting the control part and taking and storing oil samples; the control part is matched with the oil taking robot to finish oil taking; and the quick joint is used for connecting the oil taking robot and the control part. The control part comprises a manual control main valve and a remote control electromagnetic valve, wherein the inlet of the manual control main valve is connected with oil of the transformer through a pipeline; the utility model has reasonable design, compact structure and convenient use.
Description
Technical Field
The utility model relates to an automatic oil taking machine for a transformer, in particular to an extra-high voltage transformer substation and oil invasion type equipment maintenance.
Background
In recent years, with the increasing of the safety requirement of transformer products, intelligent automatic oil chromatography products are also increasingly popularized, but at present, oil extraction operations on the market generally need manual oil extraction on transformers, and when the transformer with faults needs to be subjected to oil chromatography abnormity diagnosis and analysis, if the operation of the oil extraction mode is still carried out, great potential safety hazards can be caused to oil extraction personnel.
When the internal fault of the main transformer of the transformer substation is deflagrated and causes fire, the death and damage of operation and maintenance personnel and equipment can be directly caused. In the past explosion accident, the damage degree of the large oil filling equipment is large, the fault development is fast, the fire duration is long, the fault concealment is strong, and the operation and maintenance experience of the past equipment is far exceeded.
Although the CN202011462371.3 transformer oil sample collection robot comprises a traveling mechanism, an oil taking device, a navigation device, a guide mechanism, a communication device and a control device; the control device is electrically connected with the navigation device and used for controlling the navigation device to guide the travelling mechanism to travel to an oil taking position of the transformer along a preset path so as to realize coarse positioning between the travelling mechanism and the oil taking position; the guide mechanism is electrically connected with the control device and used for enabling the oil taking device to be aligned to the oil taking position of the transformer, so that accurate oil taking of the oil taking device is achieved. Through navigation head, guide running gear with predetermine route walking to getting oily position department of transformer, realize to running gear with get the crude location of oily position, further through guiding mechanism, make the oily position of getting of the meticulous alignment transformer of getting of oily device, get oil through getting the accuracy of oily device, replace the manual work to get oil, but its structure is complicated, uses inconveniently.
CN202010738586.7 a transformer operation and maintenance oil-extracting robot, comprising: the mobile chassis is used for autonomous movement in a working environment; the rotary table is arranged on the movable chassis and can rotate along the horizontal plane where the top wall of the movable chassis is located; a robot arm rotatably provided on the turntable; the screwing mechanism is rotatably arranged at the output end of the mechanical arm and is used for screwing the oil taking valve of the transformer to open the oil taking valve; the oil taking mechanism is arranged on the screwing mechanism and communicated with the screwing mechanism; the image recognition module is used for acquiring and analyzing the position of an oil taking valve of the transformer; and the control module is electrically connected with the movable chassis, the image recognition module, the rotary table, the mechanical arm and the screwing mechanism. Although it can replace artifical oil extraction to improve overall efficiency and full automation and intellectuality, has avoided the insecurity of artifical construction, its operation is inconvenient, and equipment cost is high.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an automatic oil taking machine for a transformer. The technical problem to be solved by the utility model is to provide a scheme for taking oil from a transformer by using a robot instead of manpower, namely, an automatic oil taking machine for the transformer is designed, and the device has the basic functions of remote control and automatic oil taking. The method aims to timely finish on-site oil extraction on the premise of ensuring the personal safety of operators when the chromatographic oil extraction operation of the transformer with serious faults is carried out, so that the fault reasons of the transformer can be confirmed and timely processed, the occurrence of serious accidents can be effectively prevented, the operation is simple, and the fault rate is low.
In order to solve the problems, the technical scheme adopted by the utility model is as follows:
an automatic oil-extracting machine for a transformer, comprising
The oil taking robot is provided with a walking part, is used for butting the control part and is used for taking and storing oil samples;
the control part is matched with the oil taking robot to finish oil taking;
and the quick connector is used for connecting the oil taking robot with the control part.
As a further improvement of the above technical solution:
the control part comprises a manual control main valve and a remote control electromagnetic valve, wherein the inlet of the manual control main valve is connected with oil of the transformer through a pipeline, and the remote control electromagnetic valve is arranged between the quick connector and the manual control main valve.
The oil taking robot is in communication connection with the control part;
when the manual control main valve and the remote control electromagnetic valve are opened, the oil storage needle tube realizes oil taking through the traction of the electric lead screw assembly.
The three-way valve II and the three-way valve I are electromagnetic reversing three-way valves.
The oil taking robot comprises a check valve with an inlet connected with a quick joint; the check valve outputs two paths through a three-way valve II, one path is connected with an oil sample oil storage needle tube II, and the other path is respectively connected with an oil sample oil storage needle tube I and a dead oil storage needle tube I through a three-way valve I;
the capacity of the dead oil storage needle tube I is larger than that of the oil sample storage needle tube I and that of the oil sample storage needle tube II.
The oil storage needle tube is made of glass.
The quick connector has stop valves at both ends.
The control portion is electrically connected with the circuit portion.
The circuit part comprises
An MCU module; the MCU module comprises a chip U1;
the MCU module outputs PWM control signals, wherein a pin 24 is connected with a channel PWM-NC2, a pin 29 is connected with a channel U-REF, and pins 31, 32 and 67 are connected with RML, RMR and STEP5 channels of PWM;
the pins 26 and 25 are respectively connected with an RX channel and a TX channel of the U2;
the pins 69 and 68 are respectively connected with an RX channel and a TX channel of the U1;
the legs 37 are each connected to the BOOT1 channel,
the pins 89 and 90 are respectively connected with the SW +/-channel;
pins 92-96 are connected to step1-4 channel of PWM respectively;
the feet 47 and 48 are connected with the U3 end;
the feet 53 and 54 are connected with PB14 and 15 channels;
the pin 14 is connected with a RESET key;
the pins 15-17 correspond to the LED ends respectively;
the pins 33 and 34 are respectively connected with the RMENA/B end;
the feet 63-65 are respectively connected with the step3-5 end of the DIR;
every two pins of the pins 81-88 are connected with the +/-ends of the SW5-2 in a pair;
the pins 55 and 56 are respectively connected to the PDs 8 and 9;
the feet 61, 62 are respectively connected with STEP1 and 2 ends of the DIR;
pins 39-43 are respectively connected with the ends of a voltage switch SV-SIGN 5-1;
the voltage stabilizing module is used for changing the 12V voltage into 5V; the voltage stabilizer comprises a voltage stabilizer U4, wherein a pin 2 of the voltage stabilizer U4 is connected with 12V input voltage and is grounded through isolation capacitors C5 and C6 which are connected in parallel; a resistor R6 is electrically connected between the pin 2 and the pin 3; pin 3 is grounded through resistor R8, and pin 4 is grounded through capacitor C8; a capacitor C2 is arranged between the pin 1 and the pin 8; the pin 7 is grounded, the output end of the pin 6 is divided into two paths, one path is grounded through a capacitor C9, the other path is grounded through a capacitor C7 and a resistor R10 which are connected in series, one path of the pin 5 is grounded through a reference resistor furnace R9, and the other path is connected with an output 5V end through series resistors R4 and R7; the pin 8 is connected with an output 5V end through a filtering and rectifying component; the output 5V end is grounded through an isolation capacitor C4; the filtering and rectifying component comprises an inductor L1 and a capacitor C3, and a pin 8 is grounded through a reverse diode D3; outputting a 5V end to supply power to a system;
the optical coupling module comprises a resistor R5, an optical coupler U3,
the input signal DIR-STEP is connected with pins 1 and 2 of the exclusion R5; the input signal PWM-STEP is connected with pins 3 and 4 of the resistor divider R5;
the voltage switching signal switch module comprises a triode Q1, wherein the base electrode of the triode Q1 is connected into an SV-SING signal through a resistor R11, the emitter electrode is grounded, and the base electrode is connected into 12V through a parallel reverse connection diode D5 and a control coil of a relay K1;
the execution switch of the relay K1 is single-pole double-throw, the input end is connected with the circuit, one output end is vacant, and the other output end outputs an SV-OUT end to carry OUT circuit work and is grounded through a diode D4;
a stepper motor driver module including a chip U2, a bank R1-3;
the corresponding channels DIR-STEP1 and 2 are connected to the input end of a row group R2 through Schottky diodes D1 and D2, and the output end of the row group R2 is connected to pins 2 and 3 and pins 6 and 7 of an optical coupler U2;
EN-STEP2, 1 are respectively connected with pins 3, 4 of R1 of the row group;
SW2 and SW1 are connected to R3.
The pins 2 and 4, the pins 6 and 8, the pins 10 and 12, the pins 14 and 16 and the pins 18 and 20 of the exchanger P2 are respectively connected with the corresponding PWM-STEP and DIR-STEP channels, and the pins 3, 7, 11, 15 and 19 are respectively connected with the EN-STEP corresponding channels, so that the stepping motor of the executive component is driven.
The control part controls the stopping of the pipeline, the oil taking robot reaches the sampling position through the crawler traveling part, the main valve is manually controlled to realize physical switching and emergency switching, the remote control electromagnetic valve realizes the automatic control of the circuit of the utility model, the remote control electromagnetic valve realizes the quick connection through the quick connector, the electromagnetic valve realizes the angle and speed control through the stepping motor to realize the accurate control, the check valve prevents backflow, and the three-way valve II and the three-way valve I9 realize the oil sample oil storage needle tube II.
The utility model has the advantages of reasonable design, low cost, firmness, durability, safety, reliability, simple operation, time and labor saving, capital saving, compact structure and convenient use.
Drawings
FIG. 1 is a control block diagram of the present invention.
Fig. 2 is a block diagram of the appearance structure of the present invention.
Fig. 3 is a schematic diagram of the circuit structure of the stepping motor of the present invention.
Fig. 4 is a schematic diagram of the optical coupler circuit structure of the present invention.
Fig. 5 is a schematic diagram of a power supply circuit of the present invention.
Fig. 6 is a schematic diagram of an optocoupler circuit of the utility model.
Fig. 7 is a schematic diagram of the optocoupler control circuit according to the present invention.
FIG. 8 is a schematic diagram of a voltage regulator circuit according to the present invention.
Fig. 9 is a schematic diagram of the switching circuit of the present invention.
FIG. 10 is a schematic diagram of the MCU usage structure of the present invention.
Wherein: 1. A control unit; 2. an oil-taking robot; 3. a manual control main valve; 4. remotely controlling the electromagnetic valve; 5. a quick coupling; 6. a check valve; 7. a three-way valve II; 8. an oil sample oil storage needle tube II; 9. a three-way valve I; 10. an oil sample oil storage needle tube II; 11. dead oil storage needle tube.
Detailed Description
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
As an embodiment, as shown in fig. 1 to 10, the automatic oil extracting machine for the transformer of the embodiment includes
The oil taking robot 2 is provided with a walking part, is used for butting the control part 1 and is used for taking and storing oil samples;
the control part 1 is matched with the oil taking robot 2 to finish oil taking;
and the quick joint 5 is used for connecting the oil taking robot 2 and the control part 1.
The control part 1 comprises a manual control main valve 3 and a remote control electromagnetic valve 4, wherein the inlet of the manual control main valve 3 is connected with oil of the transformer through a pipeline, and the remote control electromagnetic valve 4 is arranged between a quick connector 5 and the manual control main valve 3.
The oil taking robot 2 is in communication connection with the control part 1;
after the manual control main valve 3 and the remote control electromagnetic valve 4 are opened, the oil storage needle tube is pulled by the electric lead screw assembly to achieve oil taking.
The three-way valve II7 and the three-way valve I are electromagnetic reversing three-way valves.
The oil taking robot 2 comprises a check valve 6 with an inlet connected with a quick joint 5; the check valve 6 outputs two paths through a three-way valve II7, one path is connected with an oil sample oil storage needle tube II8, and the other path is respectively connected with an oil sample oil storage needle tube I10 and a dead oil storage needle tube I11 through a three-way valve I9;
the capacity of the dead oil storage needle tube I11 is larger than that of the oil sample storage needle tube I10 and that of the oil sample storage needle tube II 8.
The oil storage needle tube is made of glass.
The quick connector 5 has a stop valve at both ends.
As an embodiment, the control portion is electrically connected with the circuit portion.
As an example, the circuit portions of FIGS. 1-10 include
An MCU module; the MCU module comprises a chip U1;
the MCU module outputs PWM control signals, wherein a pin 24 is connected with a channel PWM-NC2, a pin 29 is connected with a channel U-REF, and pins 31, 32 and 67 are connected with RML, RMR and STEP5 channels of PWM;
the pins 26 and 25 are respectively connected with an RX channel and a TX channel of the U2;
the pins 69 and 68 are respectively connected with an RX channel and a TX channel of the U1;
the legs 37 are each connected to the BOOT1 channel,
the pins 89 and 90 are respectively connected with the SW +/-channel;
pins 92-96 are connected to step1-4 channel of PWM respectively;
the feet 47 and 48 are connected with the U3 end;
the feet 53 and 54 are connected with PB14 and 15 channels;
the pin 14 is connected with a RESET key;
the pins 15-17 correspond to the LED ends respectively;
the pins 33 and 34 are respectively connected with the RMENA/B end;
the feet 63-65 are respectively connected with the step3-5 end of the DIR;
every two pins of the pins 81-88 are connected with the +/-ends of the SW5-2 in a pair respectively;
the pins 55 and 56 are respectively connected to the PDs 8 and 9;
the feet 61 and 62 are respectively connected with the STEP1 and 2 ends of the DIR;
pins 39-43 are respectively connected with the ends of a voltage switch SV-SIGN 5-1;
pins 44 and 45 are respectively connected with RMENA1 and RMENB 1;
1-10 for changing 12V voltage to 5V; the voltage stabilizer U4 comprises a voltage stabilizer U4, wherein a pin 2 of the voltage stabilizer U4 is connected with 12V input voltage and is grounded through an isolation capacitor C5 and an isolation capacitor C6 which are connected in parallel; a resistor R6 is electrically connected between the pin 2 and the pin 3; pin 3 is grounded through resistor R8, and pin 4 is grounded through capacitor C8; a capacitor C2 is arranged between the pin 1 and the pin 8; the pin 7 is grounded, the output end of the pin 6 is divided into two paths, one path is grounded through a capacitor C9, the other path is grounded through a capacitor C7 and a resistor R10 which are connected in series, one path of the pin 5 is grounded through a reference resistor furnace R9, and the other path is connected with an output 5V end through series resistors R4 and R7; the pin 8 is connected with an output 5V end through a filtering and rectifying component; the output 5V end is grounded through an isolation capacitor C4; the filtering and rectifying component comprises an inductor L1 and a capacitor C3, and a pin 8 is grounded through a reverse diode D3; outputting a 5V end to supply power to a system;
the optical coupling module comprises a resistor R5, an optical coupler U3,
the input signal DIR-STEP is connected with pins 1 and 2 of the resistor divider R5; the input signal PWM-STEP is connected with pins 3 and 4 of the resistor divider R5;
pins 8, 7, 6 and 5 of the exclusion R5 are respectively in butt joint with pins 2, 3, 6 and 7 of an optical coupler U3 one by one; the pins 16 and 12 of the optocoupler U3 are externally connected with a 5V power supply; at the output end, the pins 14 and 15 are connected with the channel DIR12-STEP, and the pins 11 and 10 are connected with the channel PWM 12-STEP to realize the on-off of the corresponding channel;
the voltage switching signal switch module comprises a triode Q1, wherein the base electrode of the triode Q1 is connected into an SV-SING signal through a resistor R11, the emitter electrode is grounded, and the base electrode is connected into 12V through a parallel reverse connection diode D5 and a control coil of a relay K1;
the execution switch of the relay K1 is single-pole double-throw, the input end is connected with the circuit, one output end is vacant, and the other output end outputs an SV-OUT end to carry OUT circuit work and is grounded through a diode D4;
a stepper motor driver module including a chip U2, a bank R1-3;
the corresponding channels DIR-STEP1 and 2 are connected to the input end of a row group R2 through Schottky diodes D1 and D2, and the output end of the row group R2 is connected to pins 2 and 3 and pins 6 and 7 of an optical coupler U2;
pins 13 and 15 of the optical coupler U2 are connected with EN-STEP2, and the pins 13 and 14 are respectively connected with SW2 +/-ends;
EN-STEP2, 1 are respectively connected with pins 3, 4 of R1 of the row group;
SW2 and SW1 are connected to R3.
The pins 2 and 4, the pins 6 and 8, the pins 10 and 12, the pins 14 and 16 and the pins 18 and 20 of the exchanger P2 are respectively connected with the corresponding PWM-STEP and DIR-STEP channels, and the pins 3, 7, 11, 15 and 19 are respectively connected with the EN-STEP corresponding channels, so that the stepping motor of the executive component is driven.
The utility model controls the pipeline stop through the control part 1, the oil taking robot 2 reaches the sampling position through the crawler belt walking part, the main valve 3 is manually controlled to realize physical switch and emergency switch, the remote control electromagnetic valve 4 realizes the circuit of the utility model to realize automatic control, it realizes quick connection through a quick connector 5, the electromagnetic valve realizes angle and speed control through a stepping motor to realize accurate control, a check valve 6 prevents backflow, a three-way valve II7 and a three-way valve I9 realize automatic control starting or stopping of an oil sample oil storage needle tube II8, an oil sample oil storage needle tube II 10 and a dead oil storage needle tube 11, the circuit of the utility model adopts MCU control, has a voltage stabilizing function, stable signals, signal on-off of the optocoupler, low-voltage control high voltage of the triode, safety and reliability, and reasonable circuit arrangement.
As an embodiment, the automatic oil taking machine for the transformer comprises the following parts:
A. automatic oil-extracting machine body for transformer: the device can automatically walk and butt the control box to execute main oil taking actions and store oil samples and waste oil.
B. The matched oil circuit interface control box: protecting and protecting the transformer lead-out oil pipe, pipeline fittings and an electrical control part, and completing oil extraction by matching with an automatic oil extraction machine for the transformer;
C. an oil way butt joint part: the robot can carry out active fine adjustment in three directions of XYZ and passive fine adjustment in a small range of concentricity of the Y axis, so that the robot A and the control box B can complete sealing butt joint of oil ways.
D. An electrical control section: the brain of the automatic oil taking machine for the transformer controls A, B, C three parts to work cooperatively to finish the oil taking work of the transformer.
Preferably, in the part A, the automatic oil taking machine for the transformer adopts a crawler type walking structure, and is stable and reliable, strong in ground grabbing force and strong in obstacle crossing capability.
Preferably, in the part a, the automatic oil extraction machine for the transformer uses a 2.4G wireless communication technology to complete signal transmission with a matched oil way interface control box, a communication link is stable and reliable, and a closed-loop control channel between the automatic oil extraction machine for the transformer and the matched oil way interface control box is established.
Preferably, in section a, the oil extraction operation is performed by an electromagnetic valve and a glass syringe mounted on an electric screw rail. The service logic of the whole oil taking process is realized, the waste oil in the pipeline is discharged, the needle cylinder is rinsed, and the oil sample is extracted and stored.
Preferably, in the part A, the electromagnetic valve controls gating of the oil production pipeline and plays a role in sealing the pipeline so as to prevent air from entering the oil way to influence oil sample components.
Preferably, in the part A, compared with other capacities, the glass needle cylinder has the characteristics of oil resistance, smooth drawing, good sealing performance and the like, and can extract and store oil samples.
Preferably, in the part A, the glass syringe loaded on the electric lead screw slide rail can perform oil pumping and oil discharging actions, so that the glass syringe is rinsed, waste oil in the rinsed syringe is discharged into the waste oil barrel, and oil samples for inspection are extracted and stored.
Preferably, in the part A, a plastic kettle is adopted to store the waste oil in the pipeline and the waste oil for rinsing the syringe, and the plastic kettle has the characteristics of large capacity, light weight of the body and capability of observing the internal oil quantity.
Preferably, in the part B, the control box is made of stainless steel, is waterproof, dustproof and corrosion-resistant, and has a good protection effect on internal devices.
Preferably, in the part B, the control box door is provided with an opening which is closed under normal conditions to ensure the sealing performance of the box body, and when oil is required to be taken, the opening is controlled to be opened by an electric mechanism to enable the robot and the pipeline in the box body to be in butt joint.
Preferably, in the part B, the pipeline interface can move along the Z axis, so that the complexity of the robot end interface part is reduced, the weight of the robot is reduced, and the energy consumption of the robot is reduced.
Preferably, in the part C, a special quick connector for a hydraulic oil pipe is used for butt joint of the pipelines, normally closed valves are arranged on two sides of the connector to ensure the sealing performance of the pipelines, and when the connector is inserted, the valves on two sides are opened to connect the pipelines.
As an embodiment, as shown in fig. 1-8, the steps and scheme of the whole oil taking process of the oil taking robot are as follows, and the steps are divided into 8 steps as described in the figure, wherein one needle tube is replaced by about 1L of waste oil sampling container, each needle tube takes about 100mL of oil, the robot and the oil taking port adopt a C-shaped interface, the interface door has strong sealing performance, a pipeline is communicated when the robot is connected, and the C-shaped interface adopts an instantaneous sealing mechanical structure at the moment when the robot drives away, so that the oil way sealing performance is effectively ensured. In order to meet the quantitative requirement when the injector is used for taking oil conveniently, the fixed disk matched with the pre-positioning station of the injector has the functions of manually adjusting the upper range of oil taking and pre-positioning. The oil sample is quantitatively held by a high-precision quantitative oil cylinder which adopts sealing materials and inner wall coatings, so that oil gas pollution to transformer oil can be avoided, the box body mainly comprises a box top and a main machine box body, and the inner side surface of the box top is additionally provided with a heat insulating material; the mainframe box adopts a front and back double-door structure, the box door and the box body both adopt a double-layer structure, and heat insulation materials are additionally arranged on the inner side of the box door and the box body.
The present invention has been described in sufficient detail for clarity of disclosure and is not exhaustive of the prior art.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; it is obvious as a person skilled in the art to combine several aspects of the utility model. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An automatic oil fetching machine for a transformer, characterized in that: comprises that
The oil taking robot (2) is provided with a walking part, is used for butting the control part (1) and is used for taking and storing oil samples;
the control part (1) is matched with the oil taking robot (2) to finish oil taking;
and the quick joint (5) is used for connecting the oil taking robot (2) with the control part (1).
2. The automatic oil extraction machine for transformers according to claim 1, characterized in that:
the control part (1) comprises a manual control main valve (3) with an inlet connected with transformer oil through a pipeline, and a remote control electromagnetic valve (4) arranged between the quick connector (5) and the manual control main valve (3).
3. The automatic oil extraction machine for transformers according to claim 2, characterized in that: the oil taking robot (2) is in communication connection with the control part (1);
after the manual control main valve (3) and the remote control electromagnetic valve (4) are opened, the oil storage needle tube is pulled by the electric lead screw assembly to achieve oil taking.
4. The automatic oil extraction machine for transformers according to claim 3, characterized in that: the three-way valve II (7) and the three-way valve I are electromagnetic reversing three-way valves.
5. The automatic oil extraction machine for transformers according to claim 4, characterized in that: the oil taking robot (2) comprises a check valve (6) with an inlet connected with the quick joint (5); the check valve (6) outputs two paths through a three-way valve II (7), one path is connected with an oil sample oil storage needle tube II (8), and the other path is respectively connected with an oil sample oil storage needle tube I (10) and a dead oil storage needle tube I (11) through a three-way valve I (9);
the capacity of the dead oil storage needle tube I (11) is larger than that of the oil sample storage needle tube I (10) and that of the oil sample storage needle tube II (8).
6. The automatic oil extraction machine for transformers according to claim 5, characterized in that: the oil storage needle tube is made of glass.
7. The automatic oil extraction machine for transformers according to claim 1, characterized in that: the two ends of the quick connector (5) are provided with stop valves.
8. The automatic oil extraction machine for transformers according to claim 1, characterized in that: the control portion is electrically connected with the circuit portion.
9. The automatic oil extraction machine for transformers according to claim 8, characterized in that: the circuit part comprises
An MCU module; the MCU module comprises a chip U1;
the MCU module outputs PWM control signals, wherein a pin 24 is connected with a channel PWM-NC2, a pin 29 is connected with a channel U-REF, and pins 31, 32 and 67 are connected with RML, RMR and STEP5 channels of PWM;
the pins 26 and 25 are respectively connected with an RX channel and a TX channel of the U2;
the pins 69 and 68 are respectively connected with an RX channel and a TX channel of the U1;
pin 72 connects to SWDIO channel, pin 76 connects to SWCLK channel, pins 35, 36 connect to DOOR, NC channel of PWM;
the legs 37 are each connected to the BOOT1 channel,
the pins 89 and 90 are respectively connected with the SW +/-channel;
pins 92-96 are connected to step1-4 channel of PWM respectively;
the feet 47 and 48 are connected with the U3 end;
pin 51 is connected to the PWM-ON channel;
the feet 53 and 54 are connected with PB14 and 15 channels;
pin 13 connects osc-out channel;
pin 14 is connected with a RESET key;
the pins 15-17 correspond to the LED ends respectively;
the pins 33 and 34 are respectively connected with the RMENA/B end;
the feet 63-65 are respectively connected with the step3-5 end of the DIR;
pins 8 and 9 connect to the OSC 32;
every two pins of the pins 81-88 are connected with the +/-ends of the SW5-2 in a pair;
the pins 55 and 56 are respectively connected to the PDs 8 and 9;
the feet 61 and 62 are respectively connected with the STEP1 and 2 ends of the DIR;
pins 39-43 are respectively connected with the ends of a voltage switch SV-SIGN 5-1;
the legs 44, 45 are connected to RMENA1 and RMENB1, respectively.
10. The automatic oil extraction machine for transformers according to claim 9, characterized in that: the voltage stabilizing module is used for changing the 12V voltage into 5V; the voltage stabilizer comprises a voltage stabilizer U4, wherein a pin 2 of the voltage stabilizer U4 is connected with 12V input voltage and is grounded through isolation capacitors C5 and C6 which are connected in parallel; a resistor R6 is electrically connected between the pin 2 and the pin 3; pin 3 is grounded through resistor R8, and pin 4 is grounded through capacitor C8; a capacitor C2 is arranged between the pin 1 and the pin 8; the pin 7 is grounded, the output end of the pin 6 is divided into two paths, one path is grounded through a capacitor C9, the other path is grounded through a capacitor C7 and a resistor R10 which are connected in series, one path of the pin 5 is grounded through a reference resistor furnace R9, and the other path is connected with an output 5V end through series resistors R4 and R7; the pin 8 is connected with an output 5V end through a filtering and rectifying component; the output 5V end is grounded through an isolation capacitor C4; the filtering and rectifying component comprises an inductor L1 and a capacitor C3, and a pin 8 is grounded through a reverse diode D3; outputting a 5V end to supply power to a system;
the optical coupling module comprises a resistor R5, an optical coupler U3,
the input signal DIR-STEP is connected with pins 1 and 2 of the resistor divider R5; the input signal PWM-STEP is connected with pins 3 and 4 of the resistor divider R5;
pins 8, 7, 6 and 5 of the exclusion R5 are respectively in butt joint with pins 2, 3, 6 and 7 of an optical coupler U3 one by one; the pins 16 and 12 of the optocoupler U3 are externally connected with a 5V power supply; at the output end, the pins 14 and 15 are connected with the channel DIR12-STEP, and the pins 11 and 10 are connected with the channel PWM 12-STEP to realize the on-off of the corresponding channel;
the voltage switching signal switch module comprises a triode Q1, wherein the base electrode of the triode Q1 is connected into an SV-SING signal through a resistor R11, the emitter electrode is grounded, and the base electrode is connected into 12V through a parallel reverse connection diode D5 and a control coil of a relay K1;
the execution switch of the relay K1 is single-pole double-throw, the input end is connected with the circuit, one output end is vacant, and the other output end outputs an SV-OUT end to carry OUT circuit work and is grounded through a diode D4;
a stepper motor driver module including a chip U2, a bank R1-3;
the corresponding channels DIR-STEP1 and 2 are connected to the input end of a row group R2 through Schottky diodes D1 and D2, and the output end of the row group R2 is connected to pins 2 and 3 and pins 6 and 7 of an optical coupler U2;
pins 9 and 11 of the optical coupler U2 are connected with EN-STEP1, and pins 10 and 12 are respectively connected with SW1 +/-ends;
pins 13 and 15 of the optical coupler U2 are connected with EN-STEP2, and the pins 13 and 14 are respectively connected with SW2 +/-ends;
EN-STEP2, 1 are respectively connected with pins 3, 4 of R1 of the row group;
SW2 and SW1 are respectively connected with the row group R3;
the pins 2 and 4, the pins 6 and 8, the pins 10 and 12, the pins 14 and 16 and the pins 18 and 20 of the exchanger P2 are respectively connected with the corresponding PWM-STEP and DIR-STEP channels, and the pins 3, 7, 11, 15 and 19 are respectively connected with the EN-STEP corresponding channels, so that the stepping motor of the executive component is driven.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122864027.3U CN216464629U (en) | 2021-11-22 | 2021-11-22 | Automatic oil taking machine for transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561022A (en) * | 2022-12-05 | 2023-01-03 | 中国电力科学研究院有限公司 | Automatic oil taking device for transformer |
| CN116086896A (en) * | 2023-04-06 | 2023-05-09 | 国网湖北省电力有限公司电力科学研究院 | Standardized oil extraction device and method suitable for transformer oil extraction robot |
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2021
- 2021-11-22 CN CN202122864027.3U patent/CN216464629U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115561022A (en) * | 2022-12-05 | 2023-01-03 | 中国电力科学研究院有限公司 | Automatic oil taking device for transformer |
| CN115561022B (en) * | 2022-12-05 | 2023-03-10 | 中国电力科学研究院有限公司 | Automatic oil taking device for transformer |
| CN116086896A (en) * | 2023-04-06 | 2023-05-09 | 国网湖北省电力有限公司电力科学研究院 | Standardized oil extraction device and method suitable for transformer oil extraction robot |
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