Positioning, forcible entry and scrap treatment device for low-voltage current transformer

Abstract

The invention relates to the technical field of forcible entry treatment equipment, and discloses a low-voltage current transformer positioning forcible entry scrap treatment device which comprises a base which serves as a basic component of the whole device and is used for assembling and bearing all treatment mechanisms and subordinate structural parts of the treatment mechanisms. And the positioning and moving mechanism is arranged in the middle of the top end of the base and used for performing internal and external dual positioning and fixing on the low-voltage current transformer to be subjected to forcible entry treatment and moving the low-voltage current transformer to a subsequent treatment position after positioning and fixing are completed. By adding and arranging the fixed displacement mechanism, due to different internal shapes of the low-voltage current transformers, the mechanism can lift the lifting columns at different positions according to different shapes to position and fix the interiors of the low-voltage current transformers, so that the adaptability of the whole device during use is improved; and moreover, when the low-voltage current transformers with different shapes are used, the complexity of equipment replacement can be avoided, the labor intensity of workers can be reduced, and the forcible entry working efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of dismantling equipment, and in particular to a low-voltage current transformer positioning dismantling and scrapping treatment device. Background Art

[0002] A low-voltage current transformer is an electrical device that converts high AC current into a low current that is easy to control. In the power system, low-voltage current transformers are mainly used for current measurement, metering and protection. It can convert large currents into small currents, which is convenient for measuring instruments, electric energy meters and other equipment to measure and meter; at the same time, when a circuit fails, the current transformer can provide a signal to the protection device, so that the protection device can act in time, cut off the faulty circuit, and protect the safety of electrical equipment and personnel. It is widely used in various low-voltage power distribution systems, such as factories, shopping malls, residential communities, substations, etc. For example, in the power distribution room of a factory, it is used to monitor and measure the power consumption of each production line; in the distribution box of a residential community, it is used to measure the power consumption of each household.

[0003] The low-voltage current transformer is mainly composed of an outer shell and an internal iron core winding. Due to its working characteristics and the requirement for high sealing during operation, its outer shell generally adopts an integrated metal shell. Therefore, when the low-voltage current transformer is forcibly dismantled, its metal shell needs to be dismantled first, and then the internal iron core winding can be taken out. However, one of the existing dismantling methods is manual hammer dismantling, which is time-consuming and labor-intensive and has low dismantling efficiency. The other is extrusion dismantling through hydraulic equipment. This dismantling method has poor controllability and safety, and is easy to cause damage to the internal iron core winding, and the dismantling safety is also relatively poor. Therefore, technical personnel in this field have proposed a low-voltage current transformer positioning dismantling and scrapping treatment device to solve the above-mentioned technical problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a low-voltage current transformer positioning, dismantling and scrapping treatment device, which solves the problems of low efficiency and poor safety of the existing dismantling treatment methods.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a low-voltage current transformer positioning, breaking and scrapping treatment device, comprising:

[0006] The base, as the basic component of the whole device, is used to assemble and carry each processing mechanism and its subordinate structural parts;

[0007] The positioning and moving mechanism is arranged at the middle of the top of the base, and is used to perform internal and external dual positioning and fixing of the low-voltage current transformer to be dismantled, and to shift it to a subsequent processing position after positioning and fixing;

[0008] A front-end processing mechanism is arranged at one end of the base and is used to perform front-end processing on the low-voltage current transformer after the positioning movement mechanism has processed it before dismantling it;

[0009] A rear-end processing mechanism is arranged at the other end of the base, and is used for performing rear-end processing on the low-voltage current transformer after the processing by the front-end processing mechanism before dismantling the transformer;

[0010] The dismantling and separation mechanism is arranged on both sides of the middle part of the base, and is used for dismantling and separating the low-voltage current transformer after being processed by the back-end processing mechanism.

[0011] Preferably, the positioning moving mechanism includes a moving groove, an I-shaped seat is slidably connected inside the moving groove, a screw rod is rotatably connected to the middle of one side of the inner end of the moving groove, and the other end of the screw rod passes through the middle of the I-shaped seat and is rotatably connected to the middle of the other side of the inner end of the moving groove, a servo motor is provided in the middle of one end of the base, and the output end of the servo motor passes through the base and is connected to the middle of one end of the screw rod.

[0012] Preferably, the positioning and moving mechanism also includes a connecting seat, a connecting seat is fixedly connected to the middle part of the top end of the I-shaped seat, a four-jaw chuck is provided in the middle part of the top end of the connecting seat, a plurality of stepped positioning seats are arranged in a circular array around the middle part of the top end of the four-jaw chuck, a center seat is provided in the middle part of the four-jaw chuck, an electromagnet disk is provided in the middle part of the inner side of the connecting seat, a plurality of lifting columns are slidably connected to the center seat, and an electromagnet base is provided at the bottom end of each of the lifting columns.

[0013] Preferably, the front-end processing mechanism includes a rear mounting seat, one end of the base is fixedly connected to the rear mounting seat, a liquid nitrogen storage tank is provided at the rear bottom of the rear mounting seat, an electric cylinder three is provided at the middle of the front top of the rear mounting seat, and the top of the rod body of the electric cylinder three is fixedly connected to the annular seat two.

[0014] Preferably, the front-end processing mechanism also includes a dispersion chamber 1, a dispersion chamber 1 is opened in the middle part of the inner side of the annular seat 2, an outer spray ring seat is provided in the middle part of the inner wall of the annular seat 2, and the liquid inlet of the outer spray ring seat is connected with the interior of the dispersion chamber 1, a center column 1 is fixedly connected to the middle part of the inner top end of the annular seat 2, and the interior of the center column 1 is connected with the interior of the dispersion chamber 1, an inner spray ring seat is provided in the middle part of the outer wall of the center column 1, and the liquid inlet of the inner spray ring seat is connected with the interior of the center column 1, a liquid nitrogen delivery pump is provided in the middle and lower part of the rear side of the rear mounting seat, a groove is opened in the middle and upper part of the rear mounting seat, the liquid inlet of the liquid nitrogen delivery pump is connected with the interior of the liquid nitrogen storage tank through a connecting pipe, and the liquid outlet of the liquid nitrogen delivery pump is connected with the interior of the dispersion chamber 1 through a connecting pipe.

[0015] Preferably, the rear-end processing mechanism includes a front mounting seat, and the end of the base away from the rear mounting seat is fixedly connected to the front mounting seat, gas storage tanks are arranged on both sides of the bottom end of the rear side of the front mounting seat, and the middle and lower parts of the gas storage tanks are connected by a pressure equalizing pipe, and an electric cylinder 1 is arranged in the middle of the top end of the front side of the front mounting seat, and the top end of the rod body of the electric cylinder 1 is fixedly connected to an annular seat 1, and a dispersion chamber 2 is opened in the middle of the inner side of the annular seat 1.

[0016] Preferably, the rear-end processing mechanism also includes a solenoid valve, which is arranged at the middle and lower part of the front side of the front mounting seat, the middle part of the pressure equalizing pipe is connected with one end of the solenoid valve through a connecting pipe, and the other end of the solenoid valve is connected with the interior of the dispersion chamber 2 through a connecting pipe, an outer ring seat is arranged in the middle part of the inner wall of the annular seat 1, a center column 2 is arranged in the middle part of the inner top end of the annular seat 1, the interior of the center column 2 is connected with the interior of the dispersion chamber 2, an inner ring seat is arranged in the middle part of the outer wall of the center column 2, and the inner middle parts of the outer ring seat and the inner ring seat are both provided with multiple flame heads in a circular array.

[0017] Preferably, the dismantling and separation mechanism includes a side mounting seat, the middle parts of both sides of the base are fixedly connected with the side mounting seat, the middle and upper parts of one adjacent side of the side mounting seat are equidistantly provided with two electric cylinders 2, the top ends of the rod bodies of the electric cylinders 2 on the same side are respectively fixedly connected to both sides of the middle part of the corresponding mounting plate, and the middle part of one adjacent side of the mounting plate is fixedly connected with a triangular prism seat.

[0018] Working principle: When processing the scrapped low-voltage current transformer, the positioning and moving mechanism is started. First, the staff will place the low-voltage current transformer that is about to be dismantled on the four-claw chuck on the connecting seat, and then the staff will start the four-claw chuck, so that the stepped positioning seat on the four-claw chuck will move synchronously to the middle of the four-claw chuck. While the stepped positioning seat moves synchronously, it pushes the low-voltage current transformer on the four-claw chuck to move toward the middle. After the stepped positioning seat positions the low-voltage current transformer on the four-claw chuck to the center of it, the stepped positioning seat stops moving, thereby completing the fixed positioning processing of the outside of the low-voltage current transformer, and then the outside of the low-voltage current transformer is fixed. After the positioning is completed, the staff controls the electromagnet disk through the remote control device to energize and change the magnetism, so that the magnetism of the electromagnet disk and the electromagnet base at the bottom of the lifting column are the same. Through the principle of like magnets repel each other and opposite magnets attract each other, the repulsive force generated between the electromagnet base and the electromagnet disk pushes the lifting column in the center seat to rise. At this time, the lifting column at the hollow position in the middle of the low-voltage current transformer has no upper restriction, so the lifting column at the corresponding position on the center seat rises, and the inner middle part of the low-voltage current transformer is fixed by the rising lifting column, thereby completing the fixed positioning of the inside of the low-voltage current transformer. After the double fixation of the inside and outside of the low-voltage current transformer is completed, the servo on the base The servo motor is started, and the shaft of the servo motor drives the lead screw in the moving slot to rotate synchronously while rotating, and the lead screw drives the I-shaped seat in the moving slot to move while rotating, and the I-shaped seat drives the connecting seat thereon and the end position of the low-voltage current transformer moving base on the four-jaw chuck while moving, thereby completing the dual positioning and moving processing of the low-voltage current transformer inside and outside; when the low-voltage current transformer after fixed positioning is moved to the position of the front-end processing mechanism through the positioning and moving mechanism, the front-end processing mechanism is started, and the electric cylinder three on the rear mounting seat is started first, and the rod body on the electric cylinder three is pushed out after starting, and the upper rod body of the electric cylinder three is pushed out while driving the annular seat two at the bottom thereof to move synchronously Move down, the annular seat 2 moves down until the low-voltage current transformer shell on the four-claw chuck is completely covered and then stops moving down. At this time, the outer spray ring seat transports the liquid nitrogen in the liquid nitrogen storage tank to the dispersion chamber 1 of the annular seat 2 through the connecting pipe. Then, as the amount of liquid nitrogen in the dispersion chamber 1 continues to increase, after the interior of the dispersion chamber 1 is completely filled with liquid nitrogen, the liquid nitrogen in the dispersion chamber 1 is sprayed to the middle of the metal shell of the low-voltage current transformer through the outer spray ring seat. At the same time, the liquid nitrogen in the dispersion chamber 1 passes through the central column 1 and the inner spray ring seat and is sprayed to the inner middle of the metal shell of the low-voltage current transformer, thereby quickly cooling the middle of the metal shell of the low-voltage current transformer through liquid nitrogen, thereby completing the front-end processing of the low-voltage current transformer before dismantling;Then, the low-voltage current transformer after the front-end processing is shifted to the position of the rear-end processing mechanism again through the positioning and moving mechanism. At this time, the rear-end processing mechanism is started. First, the electric cylinder 1 on the front mounting seat is started. After the electric cylinder 1 is started, the rod body on it is pushed out. While the rod body on the electric cylinder 1 is pushed out, the annular seat 1 at the bottom is driven to move downward synchronously. After the annular seat 1 moves to completely cover the shell of the low-voltage current transformer, it stops moving. Then the staff opens the solenoid valve on the front mounting seat, so that the combustible gas in the gas storage tank passes through the pressure-equalizing pipe, the connecting pipe and the solenoid valve in turn and enters the dispersion chamber 2 of the annular seat 1. Then, the combustible gas entering the dispersion chamber 2 enters the outer ring seat and the inner ring seat on the center column 2 respectively. The combustible gas entering therein is ignited and sprayed out by the flame head, so that the position on the low-voltage current transformer shell that has been frozen and cooled by liquid nitrogen is baked at high temperature by a high-temperature flame, thereby completing the rear-end processing of the low-voltage current transformer before dismantling; then the low-voltage current transformer processed by the rear-end processing mechanism is passed through the pressure-equalizing pipe, the connecting pipe and the solenoid valve again. The positioning moving mechanism moves it to the middle of the base, that is, the position of the demolition and separation mechanism. When it moves to the position of the demolition and separation mechanism, the demolition and separation mechanism is started. First, the electric cylinder 2 on the side mounting seat is started. After the electric cylinder 2 is started, the rod on it is pushed out to the middle synchronously. While the rod on the electric cylinder 2 is pushed out to the middle synchronously, it drives the mounting plate on it to move synchronously. While the mounting plate moves, it drives the triangular prism seat on it to approach the middle position of the low-voltage current transformer shell on the four-claw chuck. Then, with the continuous movement of the triangular prism seat on the mounting plate, the triangular prism seat squeezes the position of the shell of the low-voltage current transformer after being processed by the front-end processing mechanism and the rear-end processing mechanism. Due to the huge temperature difference generated by the front-end processing mechanism and the rear-end processing mechanism on the shell, the structural strength of the metal shell drops linearly. The triangular prism seat only needs to gently squeeze the two sides of the shell to separate the shell from the middle position into two separate half shells. The staff can take out the iron core winding inside, thereby completing the demolition and separation of the low-voltage current transformer. ;

[0019] The present invention provides a low-voltage current transformer positioning, dismantling and scrapping treatment device, which has the following beneficial effects:

[0020] 1. The present invention adds and sets a fixed displacement mechanism to perform internal and external dual fixation on the low-voltage current transformer when it is dismantled. This internal and external dual fixation method greatly enhances the stability of the transformer during operation, and this stability can effectively avoid dismantling errors caused by shaking and displacement, and ensure the accuracy of the dismantling work. At the same time, after positioning is completed, it can be accurately driven to shift to the corresponding processing station, which greatly improves the automation degree and work efficiency of the entire dismantling process, reduces the mistakes and time loss that may be caused by manual handling and adjusting the position, and makes the dismantling of the low-voltage current transformer safer, more efficient and more accurate.

[0021] 2. The present invention adds and sets a fixed displacement mechanism. Due to the different internal shapes of the low-voltage current transformer, the mechanism can raise lifting columns at different positions according to different shapes to position and fix the inside, thereby improving the adaptability of the overall device when in use, and can also avoid the tediousness of equipment replacement when facing low-voltage current transformers of different shapes, which is beneficial to reducing the labor intensity of the staff and improving the efficiency of demolition work.

[0022] 3. The present invention increases and sets a front-end processing mechanism. Before dismantling the low-voltage current transformer, liquid nitrogen is used to spray the middle part of the inner and outer sides of the metal shell, which can quickly cool down and shrink the metal shell. This process can not only change the physical properties of the metal and effectively reduce its hardness, thereby making subsequent dismantling work easier to carry out, but also this local precision spraying treatment method can reduce the use of liquid nitrogen and reduce costs compared to traditional overall treatment methods. At the same time, by reducing the difficulty of dismantling, it can reduce the wear of dismantling tools, extend the service life of tools, and improve the overall efficiency and economy of dismantling work.

[0023] 4. The present invention increases and sets a back-end processing mechanism. When the low-voltage current transformer shell after liquid nitrogen spraying is subjected to internal and external high-temperature baking treatment, on the one hand, the high temperature can make the metal structure that has over-shrunk due to the liquid nitrogen spraying expand appropriately and return to its position, relieve internal stress, reduce the possibility of cracks, collapse and other adverse conditions during demolition, and improve the safety of subsequent demolition. On the other hand, this treatment can change the toughness and hardness of the metal shell, further reduce the difficulty of subsequent demolition, and improve the efficiency and quality of demolition. Moreover, the precise high-temperature baking treatment can also avoid damage to the internal components of the transformer due to excessively high or low temperature, thereby ensuring that the demolition work is carried out smoothly and safely. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the front structure of the present invention;

[0026] Figure 3It is a schematic diagram of the rear structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the local structure of the base of the present invention;

[0028] Figure 5 It is a cross-sectional schematic diagram of the internal structure of the base of the present invention;

[0029] Figure 6 It is a cross-sectional schematic diagram of the internal structure of the annular seat 2 of the present invention;

[0030] Figure 7 It is a cross-sectional schematic diagram of the internal structure of the annular seat of the present invention;

[0031] Figure 8 It is a schematic diagram of the partial structure of the side mounting seat of the present invention.

[0032] Among them, 1. Base; 2. Side mounting seat; 3. Connecting seat; 4. Gas storage tank; 5. Solenoid valve; 6. Electric cylinder 1; 7. Front mounting seat; 8. Ring seat 1; 9. Electric cylinder 2; 10. Moving groove; 11. Rear mounting seat; 12. Ring seat 2; 13. Liquid nitrogen delivery pump; 14. Liquid nitrogen storage tank; 15. Screw; 16. Pressure equalizing pipe; 17. Servo motor; 18. Slotting; 19. Step positioning seat ; 20. Center seat; 21. Mounting plate; 22. Four-jaw chuck; 23. Electric cylinder three; 24. I-beam seat; 25. Triangular prism seat; 26. Lifting column; 27. Electromagnet base; 28. Electromagnet disk; 29. ​​Dispersion chamber one; 30. Inner spray ring seat; 31. Outer spray ring seat; 32. Center column one; 33. Dispersion chamber two; 34. Outer ring seat; 35. Center column two; 36. Inner ring seat; 37. Flame head. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Please see attached Figure 1 - Attachment Figure 3 The embodiment of the present invention provides a low-voltage current transformer positioning, breaking and scrapping treatment device, including a base 1, which is used as a basic component of the overall device for assembling and carrying various treatment mechanisms and their subordinate structural parts;

[0035] Please see attached Figure 4 - Attachment Figure 5, a positioning and moving mechanism, which is arranged at the middle of the top of the base 1, is used to perform dual positioning and fixing of the low-voltage current transformer to be broken and processed inside and outside, and to shift it to a subsequent processing position after positioning and fixing;

[0036] The positioning and moving mechanism also includes a connecting seat 3, a connecting seat 3 is fixedly connected to the middle of the top of the I-shaped seat 24, a four-jaw chuck 22 is arranged in the middle of the top of the connecting seat 3, a plurality of stepped positioning seats 19 are arranged in a circular array around the middle of the top of the four-jaw chuck 22, a center seat 20 is arranged in the middle of the four-jaw chuck 22, an electromagnet disk 28 is arranged in the middle of the inner side of the connecting seat 3, a plurality of lifting columns 26 are slidably connected to the center seat 20, and an electromagnet base 27 is arranged at the bottom end of each lifting column 26.

[0037] When the overall device is in a normal state, the magnetism of the electromagnet disk 28 and the electromagnet base 27 are opposite, so in a normal state, the top of the lifting column 26 on the center seat 20 is flush with the surface of the center seat 20, but when in use, due to the push of the same-sex repulsive force between the electromagnet disk 28 and the electromagnet base 27, the lifting column 26 at the hollow position in the middle of the low-voltage current transformer will be pushed by the repulsive force to move upward, and its upward height will not exceed the middle position of the transformer housing, because if the height of the lifting column 26 exceeds the middle of the transformer, it will cause certain influence and hindrance to the subsequent front-end and rear-end processing.

[0038] And if the corresponding position of the center seat 20 is not hollow, the transformer shell will limit the lifting column 26 to prevent it from moving up. Only the lifting column 26 in the hollow position in the middle of the transformer can move up to limit and fix it internally.

[0039] When the positioning and moving mechanism is started, the staff first places the low-voltage current transformer that is about to be dismantled on the four-claw chuck 22 on the connecting seat 3, and then the staff starts the four-claw chuck 22, so that the stepped positioning seat 19 on the four-claw chuck 22 moves synchronously toward the middle of the four-claw chuck 22. The stepped positioning seat 19 moves synchronously while pushing the low-voltage current transformer on the four-claw chuck 22 to move toward the middle. After the stepped positioning seat 19 positions the low-voltage current transformer on the four-claw chuck 22 to the center thereof, the stepped positioning seat 19 stops moving, thereby completing the fixed positioning processing of the outside of the low-voltage current transformer.

[0040] Then, after the positioning of the outside of the low-voltage current transformer is completed, the staff controls the electromagnet disk 28 through the remote control device to energize and change the magnetism, so that the magnetism of the electromagnet disk 28 and the electromagnet base 27 at the bottom of the lifting column 26 are the same. Through the principle of like magnets repel each other and opposite magnets attract each other, the repulsive force generated between the electromagnet base 27 and the electromagnet disk 28 pushes the lifting column 26 in the center seat 20 to rise. At this time, the lifting column 26 at the hollow position in the middle of the low-voltage current transformer has no upper restriction, so the lifting column 26 at the corresponding position on the center seat 20 rises, and the inner middle part of the low-voltage current transformer is fixed by the rising lifting column 26, thereby completing the fixed positioning of the inside of the low-voltage current transformer.

[0041] The positioning moving mechanism includes a moving groove 10, an I-shaped seat 24 is slidably connected inside the moving groove 10, a screw rod 15 is rotatably connected to the middle of one side of the inner end of the moving groove 10, and the other end of the screw rod 15 passes through the middle of the I-shaped seat 24 and is rotatably connected to the middle of the other side of the inner end of the moving groove 10, a servo motor 17 is arranged in the middle of one end of the base 1, and the output end of the servo motor 17 passes through the base 1 and is connected to the middle of one end of the screw rod 15.

[0042] After the low-voltage current transformer is double fixed inside and outside, the servo motor 17 on the base 1 is started, and the shaft of the servo motor 17 drives the screw rod 15 in the movable groove 10 to rotate synchronously while rotating, and the screw rod 15 drives the I-shaped seat 24 in the movable groove 10 to move while rotating, and the I-shaped seat 24 drives the connecting seat 3 thereon and the end position of the low-voltage current transformer on the four-jaw chuck 22 to move the base 1 while moving, thereby completing the double positioning and movement of the low-voltage current transformer inside and outside.

[0043] Please see attached Figure 6 , a front-end processing mechanism, which is arranged at one end of the base 1, and is used for performing front-end processing on the low-voltage current transformer before dismantling processing after the positioning movement mechanism has been processed;

[0044] The front-end processing mechanism includes a rear mounting seat 11, one end of the base 1 is fixedly connected to the rear mounting seat 11, a liquid nitrogen storage tank 14 is arranged at the rear bottom of the rear mounting seat 11, an electric cylinder three 23 is arranged in the middle of the front top of the rear mounting seat 11, and the top of the rod body of the electric cylinder three 23 is fixedly connected to the annular seat two 12.

[0045] When the front-end processing mechanism is started, the electric cylinder three 23 on the rear mounting seat 11 is started first. After the electric cylinder three 23 is started, the rod body on it is pushed out. While the rod body on the electric cylinder three 23 is pushed out, the annular seat two 12 at the bottom is driven to move downward synchronously. The annular seat two 12 moves down until the low-voltage current transformer housing on the four-jaw chuck 22 is completely covered and then stops moving downward.

[0046] The front-end processing mechanism also includes a dispersion chamber 29, a dispersion chamber 29 is opened in the middle of the inner side of the annular seat 12, an outer spray ring seat 31 is arranged in the middle of the inner wall of the annular seat 12, and the liquid inlet of the outer spray ring seat 31 is connected with the interior of the dispersion chamber 29, a central column 32 is fixedly connected to the middle of the inner top of the annular seat 12, and the interior of the central column 32 is connected with the interior of the dispersion chamber 29, an inner spray ring seat 30 is arranged in the middle of the outer wall of the central column 32, and the liquid inlet of the inner spray ring seat 30 is connected with the interior of the central column 32, a liquid nitrogen delivery pump 13 is arranged in the middle and lower part of the rear side of the rear mounting seat 11, a groove 18 is opened in the middle and upper part of the rear mounting seat 11, the liquid inlet of the liquid nitrogen delivery pump 13 is connected with the interior of the liquid nitrogen storage tank 14 through a connecting pipe, and the liquid outlet of the liquid nitrogen delivery pump 13 is connected with the interior of the dispersion chamber 29 through a connecting pipe.

[0047] At this time, the outer spray ring seat 31 transports the liquid nitrogen in the liquid nitrogen storage tank 14 to the dispersion chamber 29 of the ring seat 12 through the connecting pipe, and then as the amount of liquid nitrogen in the dispersion chamber 29 continues to increase, after the interior of the dispersion chamber 29 is completely filled with liquid nitrogen, the liquid nitrogen in the dispersion chamber 29 is sprayed to the middle of the metal shell of the low-voltage current transformer through the outer spray ring seat 31. At the same time, the liquid nitrogen in the dispersion chamber 29 passes through the central column 32 and the inner spray ring seat 30 and is sprayed to the inner middle part of the metal shell of the low-voltage current transformer, so that the middle part of the metal shell of the low-voltage current transformer is quickly cooled by liquid nitrogen, thereby completing the front-end processing of the low-voltage current transformer before dismantling.

[0048] Please see attached Figure 7 , a back-end processing mechanism, which is arranged at the other end of the base 1, and is used for performing back-end processing before dismantling the low-voltage current transformer after the front-end processing mechanism has been processed;

[0049] The rear-end processing mechanism includes a front mounting seat 7, and the end of the base 1 away from the rear mounting seat 11 is fixedly connected to the front mounting seat 7, and gas storage tanks 4 are arranged on both sides of the bottom end of the rear side of the front mounting seat 7. The middle and lower parts of the gas storage tanks 4 are connected by a pressure equalizing pipe 16, and an electric cylinder 6 is arranged in the middle of the top end of the front side of the front mounting seat 7. The top end of the rod body of the electric cylinder 6 is fixedly connected to an annular seat 8, and a dispersion chamber 2 33 is opened in the inner middle part of the annular seat 8.

[0050] When the rear-end processing mechanism is started, the electric cylinder 6 on the front mounting seat 7 is started first, and the rod body on the electric cylinder 6 is pushed out after starting. While the rod body on the electric cylinder 6 is pushed out, the annular seat 8 at its bottom is driven to move downward synchronously, and the annular seat 8 stops moving after it moves to completely cover the shell of the low-voltage current transformer.

[0051] The back-end processing mechanism also includes an electromagnetic valve 5, which is arranged at the middle and lower part of the front side of the front mounting seat 7, the middle part of the pressure equalizing pipe 16 is connected with one end of the electromagnetic valve 5 through a connecting pipe, and the other end of the electromagnetic valve 5 is connected with the interior of the dispersion chamber 2 33 through a connecting pipe, an outer ring seat 34 is arranged in the middle part of the inner wall of the annular seat 1 8, a center column 2 35 is arranged in the middle part of the inner top end of the annular seat 1 8, the interior of the center column 2 35 is connected with the interior of the dispersion chamber 2 33, an inner ring seat 36 is arranged in the middle part of the outer wall of the center column 2 35, and a plurality of flame heads 37 are arranged in a circular array in the inner middle parts of the outer ring seat 34 and the inner ring seat 36.

[0052] Afterwards, the staff opens the solenoid valve 5 on the front mounting seat 7, so that the combustible gas in the gas storage tank 4 passes through the pressure equalizing pipe 16, the connecting pipe and the solenoid valve 5 in turn and enters the dispersion chamber 2 33 of the annular seat 1 8, and then the combustible gas entering the dispersion chamber 2 33 enters the outer ring seat 34 and the inner ring seat 36 on the center column 2 35 respectively, and the combustible gas entering therein is ignited and sprayed out by the flame head 37, so that the position on the casing of the low-voltage current transformer that has been frozen and cooled by liquid nitrogen is baked at high temperature by a high-temperature flame, thereby completing the back-end processing of the low-voltage current transformer before dismantling.

[0053] Please see attached Figure 8 , a dismantling and separation mechanism is arranged on both sides of the middle part of the base 1, and is used to dismantle and separate the low-voltage current transformer after being processed by the back-end processing mechanism.

[0054] The dismantling and separation mechanism includes a side mounting seat 2, and the middle parts of both sides of the base 1 are fixedly connected with the side mounting seat 2, and the middle and upper parts of the adjacent sides of the side mounting seat 2 are equidistantly arranged with two electric cylinders 9, and the top ends of the rod bodies of the electric cylinders 9 on the same side are respectively fixedly connected to the middle sides of the corresponding mounting plate 21, and the middle parts of the adjacent sides of the mounting plate 21 are fixedly connected with triangular prism seats 25.

[0055] When the dismantling and separation mechanism is started, the electric cylinder 29 on the side mounting seat 2 is started first. After the electric cylinder 29 is started, the rod body thereon is pushed out toward the middle synchronously. While the rod body on the electric cylinder 29 is pushed out toward the middle synchronously, it drives the mounting plate 21 thereon to move synchronously. While the mounting plate 21 moves, it drives the triangular prism seat 25 thereon to approach the middle position of the low-voltage current transformer housing on the four-jaw chuck 22.

[0056] Then, as the triangular prism seat 25 on the mounting plate 21 continues to move, the triangular prism seat 25 squeezes the position of the outer shell of the low-voltage current transformer after being processed by the front-end processing mechanism and the back-end processing mechanism. Due to the huge temperature difference between the outer shell and the back-end processing mechanism, the structural strength of the metal outer shell drops sharply. The triangular prism seat 25 only needs to gently squeeze both sides of the outer shell to separate the outer shell from the middle position into two separate half shells, and the staff can take out the iron core winding inside, thereby completing the dismantling and separation operation of the low-voltage current transformer.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-voltage current transformer positioning, dismantling and scrapping treatment device, characterized in that: include A base (1), which serves as a basic component of the overall device and is used to assemble and carry various processing mechanisms and their subordinate structural components; A positioning and moving mechanism is arranged at the middle of the top of the base (1) and is used to perform internal and external dual positioning and fixing of the low-voltage current transformer to be dismantled and processed, and to shift it to a subsequent processing position after the positioning and fixing is completed; A front-end processing mechanism is arranged at one end of the base (1) and is used to perform front-end processing on the low-voltage current transformer after the positioning movement mechanism has processed it before dismantling it; A rear-end processing mechanism is arranged at the other end of the base (1) and is used to perform rear-end processing on the low-voltage current transformer after the processing by the front-end processing mechanism before dismantling the transformer; The dismantling and separation mechanism is arranged on both sides of the middle part of the base (1) and is used for dismantling and separating the low-voltage current transformer after being processed by the rear-end processing mechanism.

2. A low voltage current transformer positioning, dismantling and scrapping treatment device according to claim 1, characterized in that: The positioning movement mechanism comprises a moving groove (10), an I-shaped seat (24) is slidably connected inside the moving groove (10), a lead screw (15) is rotatably connected to the middle of one side of the inner end of the moving groove (10), and the other end of the lead screw (15) passes through the middle of the I-shaped seat (24) and is rotatably connected to the middle of the other side of the inner end of the moving groove (10), a servo motor (17) is arranged in the middle of one end of the base (1), and the output end of the servo motor (17) passes through the base (1) and is connected to the middle of one end of the lead screw (15).

3. A low voltage current transformer positioning, dismantling and scrapping treatment device according to claim 2, characterized in that: The positioning and moving mechanism also includes a connecting seat (3), the middle part of the top end of the I-shaped seat (24) is fixedly connected to the connecting seat (3), the middle part of the top end of the connecting seat (3) is provided with a four-claw chuck (22), a plurality of stepped positioning seats (19) are arranged in a circular array around the middle part of the top end of the four-claw chuck (22), a center seat (20) is provided in the middle part of the four-claw chuck (22), an electromagnet disk (28) is provided in the middle part of the inner side of the connecting seat (3), a plurality of lifting columns (26) are slidably connected to the center seat (20), and the bottom ends of the lifting columns (26) are all provided with electromagnet bases (27).

4. A low-voltage current transformer positioning, dismantling and scrapping treatment device according to claim 1, characterized in that: The front-end processing mechanism comprises a rear mounting seat (11), one end of the base (1) is fixedly connected to the rear mounting seat (11), a liquid nitrogen storage tank (14) is arranged at the rear bottom of the rear mounting seat (11), an electric cylinder three (23) is arranged at the middle of the front top of the rear mounting seat (11), and the top of the rod body of the electric cylinder three (23) is fixedly connected to the annular seat two (12).

5. A low voltage current transformer positioning, dismantling and scrapping treatment device according to claim 4, characterized in that: The front-end processing mechanism also includes a dispersion chamber (29), a dispersion chamber (29) is provided in the middle of the inner side of the annular seat (12), an outer spray ring seat (31) is provided in the middle of the inner wall of the annular seat (12), and the liquid inlet of the outer spray ring seat (31) is connected to the interior of the dispersion chamber (29), a central column (32) is fixedly connected to the middle of the inner top of the annular seat (12), and the interior of the central column (32) is connected to the interior of the dispersion chamber (29), and the central column (31) is connected to the inner side of the dispersion chamber (29). 2) is provided with an inner spray ring seat (30) in the middle of the outer wall, and the liquid inlet of the inner spray ring seat (30) is connected with the interior of the central column one (32), a liquid nitrogen delivery pump (13) is provided in the middle and lower part of the rear side of the rear mounting seat (11), a groove (18) is provided in the middle and upper part of the rear mounting seat (11), the liquid inlet of the liquid nitrogen delivery pump (13) is connected with the interior of the liquid nitrogen storage tank (14) through a connecting pipe, and the liquid outlet of the liquid nitrogen delivery pump (13) is connected with the interior of the dispersion chamber one (29) through a connecting pipe.

6. A low voltage current transformer positioning, dismantling and scrapping treatment device according to claim 1, characterized in that: The rear-end processing mechanism comprises a front mounting seat (7), one end of the base (1) away from the rear mounting seat (11) is fixedly connected to the front mounting seat (7), gas storage tanks (4) are arranged on both sides of the rear bottom end of the front mounting seat (7), the middle and lower parts of the gas storage tanks (4) are connected through a pressure equalizing pipe (16), an electric cylinder (6) is arranged in the middle of the top end of the front side of the front mounting seat (7), the top end of the rod body of the electric cylinder (6) is fixedly connected to an annular seat (8), and a dispersion chamber (33) is opened in the middle of the inner side of the annular seat (8).

7. A low-voltage current transformer positioning, dismantling and scrapping treatment device according to claim 6, characterized in that: The rear-end processing mechanism also includes a solenoid valve (5), a solenoid valve (5) is arranged at the middle and lower part of the front side of the front mounting seat (7), the middle part of the pressure equalizing pipe (16) is connected to one end of the solenoid valve (5) through a connecting pipe, and the other end of the solenoid valve (5) is connected to the interior of the dispersion chamber 2 (33) through the connecting pipe, an outer ring seat (34) is arranged at the middle part of the inner wall of the annular seat 1 (8), a center column 2 (35) is arranged at the middle part of the inner top of the annular seat 1 (8), the interior of the center column 2 (35) is connected to the interior of the dispersion chamber 2 (33), an inner ring seat (36) is arranged at the middle part of the outer wall of the center column 2 (35), and the inner middle parts of the outer ring seat (34) and the inner ring seat (36) are both provided with a plurality of flame heads (37) in a circular array.

8. The low-voltage current transformer positioning, dismantling and scrapping treatment device according to claim 1 is characterized in that: The dismantling and separation mechanism comprises a side mounting seat (2), the middle parts of both sides of the base (1) are fixedly connected to the side mounting seat (2), the middle upper parts of adjacent sides of the side mounting seat (2) are evenly arranged with two electric cylinders (9), the top ends of the rod bodies of the electric cylinders (9) on the same side are respectively fixedly connected to the middle sides of the corresponding mounting plate (21), and the middle parts of adjacent sides of the mounting plate (21) are fixedly connected with triangular prism seats (25).

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