Multifunctional high-voltage CT metal expander online monitoring device and method thereof

Abstract

The invention discloses a multifunctional high-voltage CT metal expander on-line monitoring device and method, and belongs to the technical field of on-line monitoring. A shielding plate is fixedly mounted in the middle of the mounting flange, and a mounting groove is formed in the upper side of the shielding plate; a shielding cover is mounted on the upper side of the shielding plate; a distance measuring sensor and an air pressure sensor are fixedly mounted on the upper side of the shielding plate; detection probes of the distance measuring sensor and the air pressure sensor penetrate through the shielding plate; a control box and a deflation mechanism are mounted on the upper side of the shielding plate; the oil conveying assembly is installed in the shielding cover and on the upper side of the shielding plate. The air pressure sensor, the control box, the oil conveying assembly and the deflation mechanism are all located in the shielding cover. The deflation mechanism comprises a deflation assembly and an air outlet assembly, and the deflation assembly and the air outlet assembly are installed on the shielding plate. By means of the mode, data of the distance measuring sensor and the air pressure sensor are read every two hours, the low-power-consumption mode is selected to be restarted according to the read numerical values, and exhausting or oil liquid supplementing is conducted.

Description

Technical Field

[0001] The invention relates to the technical field of online monitoring, and in particular to a multifunctional high-pressure CT metal expander online monitoring device and a method thereof. Background Art

[0002] The current transformer is one of the main equipment of the substation. It converts large current in the substation into small current and plays an indispensable role in relay protection, automatic control, signal indication, electric energy metering and other aspects. In recent years, there have been many accidents of current transformer expander topping. Two sets of busbar differential protection in a 220kV substation have been activated. The analysis results show that the metal expander of the current transformer of the 220kV outgoing line bay switch has a topping failure, causing the top and both sides of the core cover to be partially dislocated and deformed.

[0003] High-voltage CT plays an indispensable role in the power system. However, there are some problems in the on-site observation of CT oil level, such as the observation distance is far, and the observation window will be blurred after a long time, which brings inconvenience to the routine inspection; at the same time, local discharge occurs at the loose position, causing the transformer oil to crack, and after a long time of operation, a large amount of gas accumulates and causes the expander to top; if the gas is discharged directly, it is easy to pollute the environment; and the transformer oil cracking causes the oil level in the metal expander to decrease, which affects normal use.

[0004] Based on this, the present invention designs a multifunctional high-pressure CT metal expander online monitoring device and method to solve the above problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a multifunctional high-pressure CT metal expander online monitoring device and method thereof in view of the deficiencies of the above-mentioned prior art.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A multifunctional high-pressure CT metal expander online monitoring device comprises a mounting flange; a shielding plate is fixedly mounted in the middle of the mounting flange, and a mounting groove is provided on the upper side of the mounting flange; a shielding cover is mounted on the upper side of the shielding plate; a distance sensor and an air pressure sensor are fixedly mounted on the upper side of the shielding plate, and detection probes of the distance sensor and the air pressure sensor pass through the shielding plate; a control box and an air release mechanism are mounted on the upper side of the shielding plate; an oil delivery component is mounted inside the shielding cover and on the upper side of the shielding plate; and the air pressure sensor, the control box, the oil delivery component and the air release mechanism are all located in the shielding cover; the air release mechanism comprises an air release component and an air outlet component, and the air release component and the air outlet component are mounted on the shielding plate; a timer, a control chip and a clock chip are arranged in the control box.

[0008] Furthermore, a breathing airbag is arranged in the oil delivery component, and the breathing airbag is connected to the deflation component through a hose.

[0009] Furthermore, a mounting ring plugged into the mounting groove is fixedly mounted on the bottom edge of the shielding cover, a slot is provided on the edge of the shielding plate, an insert block is fixedly mounted on the inner edge of the mounting ring, and the slot and the insert block are plugged into each other.

[0010] Furthermore, the oil delivery assembly includes an oil storage box and an oil delivery valve. The oil storage box is fixedly installed on the inner top of the shielding cover, and the oil delivery valve is fixedly installed on the upper side of the shielding plate. The bottom of the oil delivery valve passes through the shielding plate, and the top of the oil delivery valve passes through the oil storage box; the oil storage box is connected to the metal expander on the lower side of the shielding plate through the oil delivery valve.

[0011] Furthermore, the air release assembly includes a first air release valve, a hose and a connecting pipe, the first air release valve is fixedly mounted on the upper side of the shielding plate, and the bottom end of the first air release valve passes through the shielding plate; the top of the first air release valve is fixedly connected to one end of the hose; the other end of the hose passes through the outer wall of the oil storage box, and the other end of the hose is connected to one end of the breathing airbag in the oil storage box; the other end of the breathing airbag is fixedly connected to one end of the connecting pipe, and the other end of the connecting pipe passes through the oil storage box; the connecting pipe is connected to the metal expander on the lower side of the shielding plate through the breathing airbag, the hose and the first air release valve.

[0012] Furthermore, the deflation assembly also includes a buffer airbag, which is fixedly mounted on the upper side of the shielding plate and is connected to the other end of the connecting pipe.

[0013] Furthermore, the air outlet assembly includes an oil filter box, a top plate, an oil-gas separation membrane and an air outlet pipe. The oil filter box is fixedly installed on the upper side of the shielding plate, and the top plate is fixedly installed on the top of the oil filter box; one side of the top plate is connected with the buffer air bag through a connecting pipe, and the air outlet pipe is fixedly installed on the other side of the top plate; the upper end of the air outlet pipe passes through the shielding cover, and the lower end of the air outlet pipe is fixedly installed with the oil-gas separation membrane; the top plate is inclined, the upper side of the top plate is connected with the buffer air bag, and the air outlet pipe is installed on the lower side of the top plate.

[0014] Furthermore, the air outlet assembly also includes a closing valve, which is fixedly installed on the top of the air outlet pipe.

[0015] Furthermore, an oil return valve for recovering liquid oil in the exhaust gas is fixedly installed on the lower side of the shielding plate, and the upper side of the oil return valve passes through the shielding plate and is connected to the oil filter box.

[0016] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a multifunctional high-pressure CT metal expander online monitoring device, comprising the following steps:

[0017] Step 1: The clock core triggers a timing interrupt every two hours, and then the pin starts the circuit board power supply through the external circuit. After the internal program of the control chip runs, the data of the distance sensor and the air pressure sensor are read;

[0018] Step 2: If the data of the distance sensor and the air pressure sensor are normal, the timer will be reset and enter the low power mode, waiting for the next trigger; if the air pressure sensor data is higher than the set value, and the value of the distance sensor is within the preset range, then execute step 3; if the readings of the distance sensor and the air pressure sensor are both higher than the preset values, then execute steps 4 and 5;

[0019] Step 3: Open the first vent valve and the closing valve. The gas in the metal expander enters the breathing airbag through the hose and is then transported to the buffer airbag through the connecting pipe. The breathing airbag does not expand under the pressure of the oil in the oil storage box, and the buffer airbag expands in the shielding cover; the gas in the buffer airbag is slowly released from the upper side of the top plate into the oil filter box through the connecting pipe, and then the gas passes through the oil-gas separation membrane on the lower side of the top plate. The oil in the gas is blocked by the oil-gas separation membrane, and the gas is discharged from the air outlet pipe after passing through the oil-gas separation membrane; the oil adhering to the lower side of the top plate and the oil filter box falls to the upper side of the oil return valve; after the air pressure sensor data is normal, close the first vent valve and the closing valve; the timer restarts and enters the low power consumption mode, waiting for the next trigger;

[0020] Step 4: Close the closing valve, open the first air release valve, the oil delivery valve and the oil return valve; the gas in the metal expander flows into the first air release valve, the hose, the breathing airbag, the connecting pipe, the buffer airbag, the oil filter box and the air outlet pipe in turn, and the breathing airbag and the buffer airbag expand, so that the air pressure in the metal expander is consistent with the air pressure in the breathing airbag, the buffer airbag and the oil filter box, and the breathing airbag expands in the oil storage box, thereby squeezing the oil in the oil storage box, so that the oil is transported to the metal expander through the oil delivery valve to achieve oil replenishment; at the same time, the air pressure in the oil filter box pushes the oil in the oil filter box to flow back to the metal expander through the oil return valve, so that the oil after the gas is filtered through the oil-gas separation membrane flows back to the metal expander; until the value read by the ranging sensor reaches the predetermined value;

[0021] Step 5: Close the oil supply valve and the oil return valve, and open the closing valve. The gas passes through the oil-gas separation membrane to filter the oil and is discharged through the outlet pipe. After the reading of the air pressure sensor is within the normal range, close the first vent valve and the closing valve. The timer restarts and enters the low power consumption mode, waiting for the next trigger.

[0022] The present invention has the following beneficial effects:

[0023] The clock chip triggers a timing interrupt every two hours, and then the pin starts the circuit board power supply through an external circuit. After the internal program of the control chip runs, the data of the distance sensor and the air pressure sensor are read; if the data of the distance sensor and the air pressure sensor are normal, the timer will restart and enter low power consumption mode, waiting for the next trigger; thereby achieving low power consumption operation and extending the use cycle of the equipment.

[0024] If the data of the distance sensor is normal and the data of the air pressure sensor is higher than the preset value, the deflation component and the air outlet component are started. After the deflation component discharges the gas in the metal expander into the breathing airbag, the gas in the breathing airbag is filtered through the air outlet component and then discharged. The oil in the gas falls back into the air outlet component. The air outlet component is used as a buffer to slowly discharge the gas, thereby increasing the oil and gas separation time and making the separation of oil and gas more thorough, avoiding the oil in the discharged gas from polluting the air and equipment. This ensures the discharge of gas, avoids the damage of the metal expander caused by gas rushing to the top, extends the service life of the equipment, effectively improves the safety of the equipment, and effectively avoids environmental pollution.

[0025] If the data of the distance sensor and the air pressure sensor are both higher than the preset values, the air pressure in the metal expander is too high and the oil is insufficient; first start the oil transfer component, the oil return valve and the air bleed component, and close the air outlet component; discharge the gas in the metal expander into the breathing bag and the air outlet component through the air bleed component, and the breathing bag expands to balance the pressure in the oil transfer component and the pressure in the metal expander, so that the oil in the oil transfer component can flow smoothly into the metal expander; at the same time, the oil retained in the air outlet component after filtration is sent back to the metal expander through the oil return valve, so that the oil can be fully utilized; the oil level in the metal expander is detected by the air pressure sensor, and after the oil level reaches the preset value, the oil transfer component is closed, and the air outlet component is opened to discharge the gas in the breathing bag and the air outlet component after filtration; thereby replenishing the oil in time, ensuring the use of the equipment, avoiding the equipment from being damaged by top impact, and thus improving the power supply reliability of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional multifunctional high-pressure CT metal expander online monitoring device of the present invention Figure 1 ;

[0027] Figure 2 It is a front view of a multifunctional high-pressure CT metal expander online monitoring device of the present invention;

[0028] Figure 3 A three-dimensional multifunctional high-pressure CT metal expander online monitoring device of the present invention Figure 2 ;

[0029] Figure 4 A three-dimensional multifunctional high-pressure CT metal expander online monitoring device of the present invention Figure 3 ;

[0030] Figure 5 For along Figure 2 AA direction cross-sectional view;

[0031] Figure 6 is a schematic diagram of a shielding plate and its connection structure;

[0032] Figure 7 Schematic diagram of the shielding plate and its connection structure after removing the oil storage box.

[0033] The numbers in the figure represent:

[0034] 1. Mounting flange; 11. Shielding plate; 12. Mounting groove; 2. Shielding cover; 21. Mounting ring; 22. Slot; 23. Plug-in block; 3. Distance sensor; 4. Air pressure sensor; 5. Control box; 6. Oil delivery assembly; 61. Oil storage box; 62. Oil delivery valve; 7. Degassing mechanism; 71. Degassing assembly; 711. First degassing valve; 712. Hose; 713. Connecting pipe; 714. Buffer airbag; 72. Air outlet assembly; 721. Oil filter box; 722. Top plate; 723. Oil-gas separation membrane; 724. Air outlet pipe; 725. Closing valve; 8. Breathing airbag; 9. Oil return valve; 10. Metal expander. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0036] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0037] Embodiment 1

[0038] In some embodiments, please refer to the attached instructions. Figure 1-5 A multifunctional high-pressure CT metal expander online monitoring device comprises a mounting flange 1; a shielding plate 11 is fixedly mounted in the middle of the mounting flange 1, and a mounting groove 12 is provided on the upper side of the mounting flange 1; a shielding cover 2 is mounted on the upper side of the shielding plate 11; a distance sensor 3 and an air pressure sensor 4 are fixedly mounted on the upper side of the shielding plate 11, and the detection probes of the distance sensor 3 and the air pressure sensor 4 pass through the shielding plate 11 and are connected with the metal expander 10; a control box 5 and an air release mechanism 7 are mounted on the upper side of the shielding plate 11; an oil delivery component 6 is mounted inside the shielding cover 2 and on the upper side of the shielding plate 11; and the air pressure sensor 4, the control box 5, the oil delivery component 6 and the air release mechanism 7 are all located in the shielding cover 2; the air release mechanism 7 comprises an air release component 71 and an air outlet component 72, and the air release component 71 and the air outlet component 72 are mounted on the shielding plate 11.

[0039] The oil delivery assembly 6 is provided with a breathing airbag 8, which is connected to the deflation assembly 71 through a hose. The distance sensor 3 is configured as a VL53L0X laser distance sensor for detecting the oil position in the metal expander 10; the air pressure sensor 4 is configured as a high-frequency air pressure sensor for detecting the air pressure in the metal expander 10.

[0040] The control box 5 is provided with an RTC timer, which uses the domestic chip CH32F103C8T6 as the control chip and PCF8563 as the low-power clock chip to realize periodic data in a low-power manner.

[0041] An oil return valve 9 for recovering liquid oil in the exhaust gas is also fixedly mounted on the lower side of the shielding plate 11 , and the upper side of the oil return valve 9 passes through the shielding plate 11 and is connected to the gas outlet assembly 72 .

[0042] In this embodiment, when the multifunctional high-pressure CT metal expander online monitoring device is working normally, the timing interrupt is triggered every two hours through the clock chip, and then the pin starts the circuit board power supply through the external circuit. After the internal program of the control chip runs, the data of the distance sensor 3 and the pressure sensor 4 are read; if the data of the distance sensor 3 and the pressure sensor 4 are normal, the timer is reset and enters the low power consumption mode, waiting for the next trigger; if the data of the distance sensor 3 is normal and the data of the pressure sensor 4 is higher than the predetermined value, the deflation component 71 and the air outlet component 72 are started, and the deflation component 71 discharges the gas in the metal expander 10 into the breathing airbag 8, and the gas in the breathing airbag 8 is filtered by the air outlet component 72, and the gas is discharged, and the oil in the gas falls back into the air outlet component 72; the air outlet component 72 is used as a buffer to slowly discharge the gas, thereby increasing the oil and gas separation time, making the separation of oil and gas more thorough, and avoiding the oil in the discharged gas from polluting the air and equipment; thereby, on the premise of ensuring the discharge of gas, the equipment safety is effectively improved and environmental pollution is effectively avoided.

[0043] If the data of the distance sensor 3 and the air pressure sensor 4 are both higher than the predetermined values, then the air pressure in the metal expander 10 is too high and the oil is insufficient; first start the oil delivery component 6, the oil return valve 9 and the air release component 71, and close the air outlet component 72; the gas in the metal expander 10 is discharged into the breathing airbag 8 and the air outlet component 72 through the air release component 71, and the breathing airbag 8 expands to balance the pressure in the oil delivery component 6 and the metal expander 10, so that the oil in the oil delivery component 6 flows smoothly into the metal expander 10; at the same time, the air return valve 9 and the air release component 71 are used to release the gas in the metal expander 10 and the air return valve 9. The oil valve 9 returns the oil retained in the air outlet component 72 after filtration to the metal expander 10, so that the oil can be fully utilized; the oil level in the metal expander 10 is detected by the air pressure sensor 4. After the oil level reaches a predetermined value, the oil delivery component 6 is closed and the air outlet component 72 is opened to discharge the gas in the breathing airbag 8 and the air outlet component 72 after filtration; thereby, the position of the CT metal expander is monitored in real time, and digital means are used to replace manual inspections, thereby improving work efficiency and accuracy, and providing protection for the safe and reliable operation of the power grid.

[0044] Embodiment 2

[0045] In some embodiments, Figure 1-7 As shown, as a preferred embodiment of the present invention, the bottom edge of the shielding cover 2 is also fixedly installed with a mounting ring 21 plugged into the mounting groove 12, a slot 22 is provided at the edge of the shielding plate 11, and a plug block 23 is fixedly installed at the inner edge of the mounting ring 21, and the slot 22 and the plug block 23 are plugged. The oil delivery component 6 includes an oil storage box 61 and an oil delivery valve 62. The oil storage box 61 is fixedly installed on the inner top of the shielding cover 2, and the oil delivery valve 62 is fixedly installed on the upper side of the shielding plate 11. The bottom of the oil delivery valve 62 passes through the shielding plate 11, and the top of the oil delivery valve 62 passes through the oil storage box 61; the oil storage box 61 is connected to the metal expander 10 on the lower side of the shielding plate 11 through the oil delivery valve 62; the air venting component 71 includes a first air venting valve 711, a hose 712 and a connecting pipe 713. The first air venting valve 711 is fixedly installed on the upper side of the shielding plate 11, and the first air venting valve 712 is connected to the metal expander 10 on the lower side of the shielding plate 11. The bottom end of the air valve 711 passes through the shielding plate 11; the top of the first air release valve 711 is fixedly connected to one end of the hose 712; the other end of the hose 712 passes through the outer wall of the oil storage box 61, and the other end of the hose 712 is connected to one end of the breathing airbag 8 in the oil storage box 61; the other end of the breathing airbag 8 is fixedly connected to one end of the connecting pipe 713, and the other end of the connecting pipe 713 passes through the oil storage box 61; the connecting pipe 713 is connected to the metal expander 10 on the lower side of the shielding plate 11 through the breathing airbag 8, the hose 712 and the first air release valve 711.

[0046] The degassing assembly 71 also includes a buffer airbag 714, which is fixedly mounted on the upper side of the shielding plate 11, and the buffer airbag 714 is connected to the other end of the connecting pipe 713; the air outlet assembly 72 includes an oil filter box 721, a top plate 722, an oil-gas separation membrane 723 and an air outlet pipe 724, the oil filter box 721 is fixedly mounted on the upper side of the shielding plate 11, and the top plate 722 is fixedly mounted on the top of the oil filter box 721; one side of the top plate 722 is connected to the buffer airbag 714 through a connecting pipe, and the other side of the top plate 722 is fixedly mounted with an air outlet pipe 724; the upper end of the air outlet pipe 724 passes through the shielding cover 2, and the lower end of the air outlet pipe 724 is fixedly mounted with an oil-gas separation membrane 723; the top plate 722 is inclined, the upper side of the top plate 722 is connected to the buffer airbag 714, and the air outlet pipe 724 is mounted on the lower side of the top plate 722.

[0047] The gas outlet assembly 72 further includes a closing valve 725, which is fixedly mounted on the top of the gas outlet pipe 724. An oil return valve 9 for recovering liquid oil in the exhaust gas is also fixedly mounted on the lower side of the shielding plate 11, and the upper side of the oil return valve 9 passes through the shielding plate 11 and communicates with the oil filter box 721.

[0048] In this embodiment, when the oil delivery assembly 6 and the air release mechanism 7 are working normally, such as the reading of the air pressure sensor 4 is higher than the predetermined value and the value of the distance sensor 3 is within the predetermined range, the first air release valve 711 and the closing valve 725 are opened, and the gas in the metal expander 10 enters the breathing airbag 8 through the hose 712 and is then transported to the buffer airbag 714 through the connecting pipe 713. The breathing airbag 8 does not expand under the pressure of the oil in the oil storage box 61, and the buffer airbag 714 expands in the shielding cover 2; the gas in the buffer airbag 714 is discharged from the top plate 722 through the connecting pipe. The gas is slowly released into the oil filter box 721 from the side, and then the gas passes through the oil-gas separation membrane 723 on the lower side of the top plate 722. The oil in the gas is blocked by the oil-gas separation membrane 723, and the gas passes through the oil-gas separation membrane 723 and is discharged from the outlet pipe 724; the oil adhering to the lower side of the top plate 722 and the oil filter box 721 falls to the upper side of the oil return valve 9; if the readings of the distance sensor 3 and the air pressure sensor 4 are both higher than the predetermined values, the closing valve 725 is closed at this time, and the first air release valve 711, the oil supply valve 62 and the oil return valve 9 are opened; the gas in the metal expander 10 flows into the first air release valve 711 in sequence 1. In the hose 712, the breathing airbag 8, the connecting pipe 713, the buffer airbag 714, the oil filter box 721 and the air outlet pipe 724, the breathing airbag 8 and the buffer airbag 714 expand, so that the air pressure in the metal expander 10 is consistent with the air pressure in the breathing airbag 8, the buffer airbag 714 and the oil filter box 721. The breathing airbag 8 expands in the oil storage box 61, thereby squeezing the oil in the oil storage box 61, so that the oil is delivered to the metal expander 10 through the oil delivery valve 62 to achieve oil replenishment; at the same time, the air pressure in the oil filter box 721 pushes the oil in the oil filter box 721 to return through the oil return valve 9 To the metal expander 10, the gas passes through the oil-gas separation membrane 723 and the oil is filtered back, so as to make full use of the oil and avoid the oil discharge and polluting the environment; until the value read by the distance sensor 3 reaches the predetermined value; close the oil supply valve 62 and the oil return valve 9, and open the closing valve 725, and the gas passes through the oil-gas separation membrane 723 and the oil is filtered and discharged through the outlet pipe 724; after the reading of the air pressure sensor 4 is within the normal range, close the first vent valve 711 and the closing valve 725; at the same time, the timer is restarted and enters the low power consumption mode, waiting for the next trigger.

[0049] Embodiment 3

[0050] In some embodiments, Figure 1-7 As shown, in order to better achieve the purpose of the present invention, the present invention also provides a method for using a multifunctional high-pressure CT metal expander online monitoring device, comprising the following steps:

[0051] Step 1: The clock core triggers a timing interrupt every two hours, and then the pin starts the circuit board power supply through the external circuit. After the internal program of the control chip runs, the data of the distance sensor 3 and the pressure sensor 4 are read;

[0052] Step 2: If the data of the distance sensor 3 and the air pressure sensor 4 are normal, the timer will be reset and enter the low power consumption mode, waiting for the next trigger; if the data of the air pressure sensor 4 is higher than the set value, and the value of the distance sensor 3 is within the predetermined range, then execute step 3; if the readings of the distance sensor 3 and the air pressure sensor 4 are both higher than the predetermined values, then execute steps 4 and 5;

[0053] Step three: open the first air release valve 711 and the closing valve 725. The gas in the metal expander 10 enters the breathing airbag 8 through the hose 712 and is then transported to the buffer airbag 714 through the connecting pipe 713. The breathing airbag 8 does not expand under the pressure of the oil in the oil storage box 61, and the buffer airbag 714 expands in the shielding cover 2. The gas in the buffer airbag 714 is slowly released from the upper side of the top plate 722 to the oil filter box 721 through the connecting pipe. Then the gas passes through the oil-gas separation membrane 723 on the lower side of the top plate 722. The oil in the gas is blocked by the oil-gas separation membrane 723. The gas is discharged from the air outlet pipe 724 after passing through the oil-gas separation membrane 723. The oil adhered to the lower side of the top plate 722 and the oil filter box 721 falls to the upper side of the return oil valve 9. After the data of the air pressure sensor 4 is normal, the first air release valve 711 and the closing valve 725 are closed. The timer is reset and enters the low power consumption mode, waiting for the next trigger.

[0054] Step 4: Close the closing valve 725, open the first air release valve 711, the oil delivery valve 62 and the oil return valve 9; the gas in the metal expander 10 flows into the first air release valve 711, the hose 712, the breathing airbag 8, the connecting pipe 713, the buffer airbag 714, the oil filter box 721 and the air outlet pipe 724 in sequence, and the breathing airbag 8 and the buffer airbag 714 expand, so that the air pressure in the metal expander 10 is equal to that in the breathing airbag 8, the buffer airbag 714 and the oil filter box 721. The internal air pressure is consistent, and the breathing airbag 8 expands in the oil storage box 61, thereby squeezing the oil in the oil storage box 61, so that the oil is delivered to the metal expander 10 through the oil delivery valve 62 to achieve oil replenishment; at the same time, the air pressure in the oil filter box 721 pushes the oil in the oil filter box 721 to flow back to the metal expander 10 through the oil return valve 9, so that the oil filtered by the oil-gas separation membrane 723 flows back to the metal expander 10; until the value read by the distance sensor 3 reaches the predetermined value;

[0055] Step 5: Close the oil supply valve 62 and the oil return valve 9, and open the closing valve 725. The gas passes through the oil-gas separation membrane 723 to filter the oil and is discharged through the outlet pipe 724. After the reading of the air pressure sensor 4 is within the normal range, close the first vent valve 711 and the closing valve 725. The timer restarts and enters the low power consumption mode, waiting for the next trigger.

[0056] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A multifunctional high-pressure CT metal expander online monitoring device for monitoring a metal expander (10), characterized in that: It comprises a mounting flange (1), a shielding plate (11), a shielding cover (2), a distance measuring sensor (3), an air pressure sensor (4), an oil delivery component (6), an air release mechanism (7) and a control box (5); The mounting flange (1) is connected to the top of the metal expander (10), the shielding plate (11) is installed in the middle of the mounting flange (1), the shielding cover (2) is installed above the shielding plate (11), the distance sensor (3), the air pressure sensor (4), the oil delivery component (6), the air release mechanism (7) and the control box (5) are all arranged on the shielding plate (11) inside the shielding cover (2), and the detection probe of the air pressure sensor (4) and the detection probe of the distance sensor (3) pass through the shielding plate (11) to communicate with the metal expander (10), and the control box (5) is respectively connected to the distance sensor (3), the air pressure sensor (4), the oil delivery component (6) and the air release mechanism (7).

2. A multifunctional high-pressure CT metal expander online monitoring device according to claim 1, characterized in that: The mounting flange (1) is provided with a mounting groove (12), the bottom edge of the shielding cover (2) is also provided with a mounting ring (21) plugged into the mounting groove (12), and the edge of the shielding plate (11) is provided with a slot (22), an insert block (23) is fixedly installed on the inner edge of the mounting ring (21), and the slot (22) and the insert block (23) are plugged into each other.

3. The multifunctional high-pressure CT metal expander online monitoring device according to claim 1 is characterized in that: The oil delivery assembly (6) comprises an oil storage box (61) and an oil delivery valve (62); the oil storage box (61) is fixedly mounted on the inner top of the shielding cover (2); the oil delivery valve (62) is fixedly mounted on the shielding plate (11); the bottom of the oil delivery valve (62) passes through the shielding plate (11); and the top of the oil delivery valve (62) passes through the oil storage box (61); the oil storage box (61) is connected to the metal expander (10) on the lower side of the shielding plate (11) through the oil delivery valve (62).

4. The multifunctional high-pressure CT metal expander online monitoring device according to claim 3 is characterized in that: The oil delivery assembly (6) further comprises a breathing air bag (8) which is arranged inside the oil storage box (61), and the breathing air bag (8) is connected to the deflation mechanism (7).

5. The multifunctional high-pressure CT metal expander online monitoring device according to claim 4 is characterized in that: The deflation mechanism (7) comprises a deflation component (71) and an air outlet component (72); the deflation component (71) comprises a first deflation valve (711), a cushioning air bag (714), a hose (712) and a connecting pipe (713); the first deflation valve (711) is fixedly mounted on the upper side of the shielding plate (11); the bottom end of the first deflation valve (711) passes through the shielding plate (11) and is connected to the metal expander (10); the top of the first deflation valve (711) is fixedly connected to one end of the hose (712); the other end of the hose (712) passes through the metal expander (10); The other end of the hose (712) passes through the outer wall of the oil storage box (61) and is connected to one end of the breathing airbag (8) in the oil storage box (61); the other end of the breathing airbag (8) is fixedly connected to one end of the connecting pipe (713); the buffer airbag (714) is fixedly installed on the upper side of the shielding plate (11), and the other end of the connecting pipe (713) is connected to the buffer airbag (714); the connecting pipe (713) is connected to the metal expander (10) on the lower side of the shielding plate (11) through the breathing airbag (8), the hose (712) and the first air release valve (711).

6. The multifunctional high-pressure CT metal expander online monitoring device according to claim 5, characterized in that: The air outlet assembly (72) comprises an oil filter box (721), a top plate (722), an oil-gas separation membrane (723) and an air outlet pipe (724); the oil filter box (721) is fixedly mounted on the upper side of the shielding plate (11), and the top plate (722) is fixedly mounted on the top of the oil filter box (721); one side of the top plate (722) is connected to the buffer air bag (714) through a connecting pipe (713), and the other side of the top plate (722) is fixedly mounted with an air outlet pipe (724); the upper end of the air outlet pipe (724) passes through the shielding cover (2), and the lower end of the air outlet pipe (724) is fixedly mounted with an oil-gas separation membrane (723); the top plate (722) is arranged at an angle, the upper side of the top plate (722) is connected to the buffer air bag (714), and the air outlet pipe (724) is mounted on the lower side of the top plate (722).

7. The multifunctional high-pressure CT metal expander online monitoring device according to claim 6, characterized in that: The gas outlet assembly (72) further comprises a closing valve (725), and the closing valve (725) is fixedly mounted on the top of the gas outlet pipe (724).

8. The multifunctional high-pressure CT metal expander online monitoring device according to claim 6, characterized in that: An oil return valve (9) for recovering liquid oil in the exhaust gas is also fixedly mounted on the lower side of the shielding plate (11); the upper side of the oil return valve (9) passes through the shielding plate (11) and is connected to the oil filter box (721); and the lower side of the oil return valve (9) is connected to the metal expander (10).

9. The multifunctional high-pressure CT metal expander online monitoring device according to claim 8, characterized in that: The control box (5) is provided with a timer, a control chip and a low-power consumption clock chip.

10. A method for using the multifunctional high-pressure CT metal expander online monitoring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: The clock chip triggers a timing interrupt every two hours, and then the pin starts the circuit board power supply through the external circuit. After the internal program of the control chip runs, the data of the distance sensor (3) and the pressure sensor (4) are read; Step 2: If the data of the distance sensor (3) and the air pressure sensor (4) are normal, the timer will be reset and enter the low power consumption mode to wait for the next trigger; if the data of the air pressure sensor (4) is higher than the set value, and the value of the distance sensor (3) is within the predetermined range, step 3 will be executed; if the readings of the distance sensor (3) and the air pressure sensor (4) are both higher than the predetermined values, steps 4 and 5 will be executed; Step 3: Open the first air release valve (711) and the closing valve (725), the gas in the metal expander (10) enters the breathing airbag (8) through the hose (712) and is then transported to the buffer airbag (714) through the connecting pipe (713). The breathing airbag (8) does not expand under the pressure of the oil in the oil storage box (61), and the buffer airbag (714) expands in the shielding cover (2); the gas in the buffer airbag (714) is slowly released from the upper side of the top plate (722) to the oil filter box (721) through the connecting pipe. The gas then passes through the oil-gas separation membrane (723) on the lower side of the top plate (722), and the oil in the gas is blocked by the oil-gas separation membrane (723). The gas passes through the oil-gas separation membrane (723) and is discharged from the gas outlet pipe (724); the oil adhering to the lower side of the top plate (722) and the oil filter box (721) falls to the upper side of the oil return valve (9); after the data of the air pressure sensor (4) is normal, the first air release valve (711) and the closing valve (725) are closed; the timer is restarted, and the low power consumption mode is entered, waiting for the next trigger; Step 4: Close the closing valve (725), open the first air release valve (711), the oil delivery valve (62) and the oil return valve (9); the gas in the metal expander (10) flows into the first air release valve (711), the hose (712), the breathing airbag (8), the connecting pipe (713), the buffer airbag (714), the oil filter box (721) and the air outlet pipe (724) in sequence, and the breathing airbag (8) and the buffer airbag (714) expand, so that the air pressure in the metal expander (10) is equal to that in the breathing airbag (8), the buffer airbag (714) and the oil filter box. The air pressure in the box (721) is consistent, and the breathing airbag (8) expands in the oil storage box (61), thereby squeezing the oil in the oil storage box (61), so that the oil is delivered to the metal expander (10) through the oil delivery valve (62), thereby replenishing the oil; at the same time, the air pressure in the oil filter box (721) pushes the oil in the oil filter box (721) to flow back into the metal expander (10) through the oil return valve (9), so that the oil filtered by the oil-gas separation membrane (723) flows back into the metal expander (10); until the value read by the distance sensor (3) reaches a predetermined value; Step 5: Close the oil delivery valve (62) and the oil return valve (9), and open the closing valve (725), and the gas passes through the oil-gas separation membrane (723) to filter the oil and then is discharged through the outlet pipe (724); after the reading of the air pressure sensor (4) is within the normal range, close the first vent valve (711) and the closing valve (725); the timer restarts and enters the low power consumption mode, waiting for the next trigger.

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