Off-line inspection device for inner cavity of roller
By designing an offline inspection device for the inner cavity of the roll, the traditional inspection efficiency and serious pollution problems are solved, efficient and accurate roll cavity detection and intelligent pollution cleaning are achieved, and operation and maintenance costs and carbon emissions are reduced.
Patent Information
- Application Number
- CN202411504262.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-01-03
AI Technical Summary
The inspection process of traditional roller cavity is low, the pollution is severe, and the minor pressure relief results in the difficult detection of minor defects in the roller cavity, resulting in high operation and maintenance costs, unstable production lines, and increased carbon emissions.
An offline inspection device for the rolling inner cavity including external pressure gland, internal pressure gland, stuffed cover, water inlet main pipe, water outlet branch pipe, pressure gland, water tank, pressurization pump, air compressor and controller is designed to achieve batch and precision , efficient inspection, and intelligent cleaning function.
It improves the quality and operating efficiency of the inner cavity of the roll, reduces environmental pollution, realizes batch inspection, accurate and efficient inspection and intelligent pollution cleaning, and reduces operation and maintenance costs and carbon emissions.
Smart Images
Figure CN119245959A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of detection technology, and in particular to an off-line inspection device for the inner cavity of a roller. Background Art
[0002] Rollers are important and main production equipment components in the hot-rolled plate production line of steel enterprises. The application accuracy of rolls is one of the conditions that determine the quality of finished steel products, and the service life of rolls is one of the conditions that determine the output of finished steel products. The offline hot-rolled rolls are sent to professional maintenance departments for repair. After the rolls undergo surface precision processing and accessory defect elimination, the glands with rubber sealing pads are fastened to both ends of the rolls with fastening bolts, and then the inner cavity of the rolls is tested for sealing one by one with normal pressure water. The inspection process is in a manual operation state throughout, with extremely low work efficiency, sewage causing environmental pollution, and the sealing pads are in a long-term overpressure state, resulting in a slight pressure relief problem, which makes it difficult to find slight defects in the roll cavity, resulting in secondary or multiple repairs of the rolls. The above problems lead to increased operation and maintenance costs, poor production line stability, and an increase in defective plates. At the same time, it also increases carbon emissions and the funds invested in environmental governance. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide an offline inspection device for the inner cavity of a rolling mill, which overcomes the defects of traditional inspection of the inner cavity of a rolling mill, improves the inspection quality and operating efficiency of the inner cavity of a rolling mill, reduces environmental pollution, and has the functions of batch inspection, precise and efficient inspection, and intelligent pollution cleaning.
[0004] In order to solve the above technical problems, the offline inspection device for the inner cavity of the rolling mill of the present invention comprises an external pressure cover, an internal pressure cover, a blind cover, an external water inlet main pipe, an internal water inlet main pipe, a first water outlet branch pipe, a second water outlet branch pipe, a terminal pressure gauge, a water tank, a pressure pump, an air compressor and a controller. The external pressure cover and the internal pressure cover are arranged at the front end of the rolling mill by bolts, and the internal pressure cover is located in the countersunk hole on the end face of the rolling mill. The blind cover is arranged at the end of the rolling mill by bolts. The terminal pressure gauge is arranged on the blind cover and connected to the inner cavity of the rolling mill. The external water inlet main pipe is centrally arranged on the outside of the external pressure cover, the first water outlet branch pipe and the second water outlet branch pipe are arranged on the outside of the external pressure cover and are located on both sides of the external water inlet main pipe. A boss is centrally arranged on the inner side of the internal pressure cover, the internal water inlet main pipe is centrally arranged on the end face of the boss and is connected to the external water inlet main pipe, the boss is provided with a rectangular groove in the circumferential direction, and the end face is provided with a plurality of grooves at intervals in the circumferential direction. Water outlet hole, the first water outlet branch pipe, the second water outlet branch pipe, the rectangular groove and the water outlet hole are connected, the external water inlet main pipe is connected to the water tank via a booster pump, the first water outlet branch pipe and the second water outlet branch pipe are connected to the water tank, the pipeline between the external water inlet main pipe and the booster pump is provided with a first water inlet signal valve and a second water inlet signal valve, the first water inlet signal valve is close to the booster pump side, and the second water inlet signal valve is close to the front end of the roller, the output end of the air compressor is connected to the external water inlet main pipe and the connection point is located between the first water inlet signal valve and the second water inlet signal valve, the output end of the air compressor is provided with a compressed air signal valve, the first water outlet branch pipe and the second water outlet branch pipe are respectively provided with a water level sensor and a water outlet signal valve, the controller is respectively electrically connected to the terminal pressure gauge, the booster pump, the air compressor, the first water inlet signal valve, the second water inlet signal valve, the compressed air signal valve, the water level sensor and the water outlet signal valve.
[0005] Furthermore, the boss on the inner side of the internal pressure cover is provided with a radial sealing groove along the circumferential surface and an axial sealing groove at the root. Sealing rings are provided in the radial sealing groove and the axial sealing groove, and form a sealed connection with the inner wall of the countersunk hole and the end face of the roller end face.
[0006] Furthermore, the water tank is an anti-corrosion water tank, and is provided with a cover plate on the top surface and a filter screen in the middle. The pipe port connecting the booster pump to the water tank is located above the filter screen, and the pipe ports connecting the first water outlet branch pipe and the second water outlet branch pipe to the water tank are located below the filter screen.
[0007] Furthermore, the controller is provided with a monitoring screen, which displays the detection signals of the terminal pressure gauge and the water level sensor, as well as the working status of the booster pump and the air compressor in real time.
[0008] Furthermore, the diameter of the internal water inlet main pipe is 50 mm and the length is 4 / 5 of the length of the roller.
[0009] Furthermore, the device also includes an inspection platform, the surface of which is provided with concave arc surfaces for placing rollers at intervals, and roller fixing holes are arranged in rows on both sides of the concave arc surfaces. Since the offline inspection device for the inner cavity of the rolling mill of the present invention adopts the above technical scheme, that is, the device includes an external gland, an internal gland, a blind cover, an external water inlet main pipe, an internal water inlet main pipe, a first water outlet branch pipe, a second water outlet branch pipe, a terminal pressure gauge, a water tank, a booster pump, an air compressor and a controller, the external gland and the internal gland are arranged at the front end of the rolling mill, the blind cover is arranged at the end of the rolling mill, the terminal pressure gauge is arranged at the blind cover, the external water inlet main pipe, the first water outlet branch pipe and the second water outlet branch pipe are arranged on the outside of the external gland, and a boss is arranged on the inside of the internal gland. The internal water inlet main pipe is arranged on the end face of the boss and is connected with the external water inlet main pipe. The boss is provided with a rectangular groove water outlet hole. The first water outlet branch pipe, the second water outlet branch pipe, the rectangular groove and the water outlet hole are connected. The external water inlet main pipe is connected to the water tank via a pressure pump. The first and second water outlet branches are connected to the water tank. The corresponding water inlet signal valve, compressed air signal valve, water level sensor and water outlet signal valve are arranged. The controller is electrically connected with the terminal pressure gauge, pressure pump, air compressor, water inlet signal valve, compressed air signal valve, water level sensor and water outlet signal valve. The device overcomes the defects of the traditional roller cavity inspection, improves the inspection quality and operation efficiency of the roller cavity, reduces environmental pollution, and has batch inspection, precise and efficient inspection and intelligent pollution cleaning functions. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the principle of the offline inspection device for the inner cavity of a roller according to the present invention; Figure 2 This is a schematic diagram of the assembly of the external gland, internal gland and blind cover in the device; Figure 3 It is a schematic diagram of the boss structure inside the internal gland in the device; Figure 4 This is a schematic diagram of the inspection platform structure in this device. DETAILED DESCRIPTION
[0011] Implementation example Figure 1 and Figure 2As shown, the roller inner cavity offline inspection device of the present invention comprises an external gland 1, an internal gland 2, a blind cover 3, an external water inlet main pipe 4, an internal water inlet main pipe 5, a first water outlet branch pipe 6, a second water outlet branch pipe 7, a terminal pressure gauge 8, a water tank 9, a booster pump 10, an air compressor 11 and a controller 12, wherein the external gland 1 and the internal gland 2 are arranged at the front end of the roller 14 by bolts 13, and the internal gland 2 is located in the countersunk hole on the end face of the roller 14, the blind cover 3 is arranged at the end of the roller 14 by bolts 31, and the terminal pressure gauge 8 is arranged at The blind cover 3 is connected to the inner cavity of the roller 14, the external water inlet main pipe 4 is centrally arranged on the outside of the external pressure cover 1, the first water outlet branch pipe 6 and the second water outlet branch pipe 7 are arranged on the outside of the external pressure cover 1 and are located on both sides of the external water inlet main pipe 4, a boss 21 is centrally arranged on the inner side of the internal pressure cover 2, the internal water inlet main pipe 5 is centrally arranged on the end face of the boss 21 and is connected to the external water inlet main pipe 4, a rectangular groove 22 is arranged inside the boss 21 along the circumferential direction, and water outlet holes 23 are arranged at intervals on the end face along the circumferential direction, the first water outlet branch pipe 6, The second water outlet branch pipe 7, the rectangular groove 22 and the water outlet hole 23 are connected, the external water inlet main pipe 4 is connected to the water tank 9 via the booster pump 10, the first water outlet branch pipe 6 and the second water outlet branch pipe 7 are connected to the water tank 9, and the pipeline between the external water inlet main pipe 4 and the booster pump 10 is provided with a first water inlet signal valve 41 and a second water inlet signal valve 42, the first water inlet signal valve 41 is close to the booster pump 10 side, the second water inlet signal valve 42 is close to the front end of the roller 14, and the output end of the air compressor 11 is connected to the external water inlet main pipe 4 and the connection point is located at A compressed air signal valve 43 is provided at the output end of the air compressor 11 between the first water inlet signal valve 41 and the second water inlet signal valve 42, and water level sensors 61, 71 and water outlet signal valves 62, 72 are provided on the first water outlet branch pipe 6 and the second water outlet branch pipe 7 respectively, and the controller 12 is electrically connected to the terminal pressure gauge 8, the booster pump 10, the air compressor 11, the first water inlet signal valve 41, the second water inlet signal valve 42, the compressed air signal valve 43, the water level sensors 61, 71 and the water outlet signal valves 62, 72 respectively.
[0012] Preferably, Figure 3 As shown, the boss 21 on the inner side of the internal pressure cover 2 is provided with a radial sealing groove 24 along the circumferential surface and an axial sealing groove 25 at the root. Sealing rings are provided in the radial sealing groove 24 and the axial sealing groove 25, and form a sealed connection with the inner wall of the countersunk hole and the end face of the roller 14.
[0013] Preferably, the water tank 9 is an anti-corrosion water tank, and is provided with a cover plate 91 on the top surface and a filter screen 92 in the middle. The port of the pipe 93 connecting the booster pump 10 to the water tank 9 is located above the filter screen 92, and the port of the pipe 94 connecting the first water outlet branch pipe 6 and the second water outlet branch pipe 7 to the water tank 9 is located below the filter screen 92.
[0014] Preferably, the controller 12 is provided with a monitoring screen, which displays the detection signals of the terminal pressure gauge 8 and the water level sensors 61 , 71 , as well as the working status of the booster pump 10 and the air compressor 11 in real time.
[0015] Preferably, the internal water inlet main pipe 5 has a diameter of 50 mm and a length of 4 / 5 of the length of the roller 14 .
[0016] Preferably, Figure 4 As shown, the device further comprises an inspection platform 15 , on the surface of which concave arc surfaces 17 for placing the rollers 14 are arranged at intervals, and roller fixing holes 16 are arranged in a row on both sides of the concave arc surfaces 17 .
[0017] like Figure 1 As shown in the figure, the principle of simultaneously inspecting the inner cavities of two rollers is shown. Two or more rollers can be placed on the concave arc surface of the inspection platform, and a thick rubber protective pad matching the surface of the roller to be inspected is laid on the concave arc surface to protect the cylindrical surface of the roller. The corresponding pipelines and electrical circuits are connected as shown in the figure to realize batch inspection of the inner cavities of the rollers. The workflow of the roller inner cavity inspection is as follows: 1. The booster pump 10 is connected to the first water inlet signal valve 41 by a signal line, and the first water inlet signal valve 41 is in a normally open state; 2. The booster pump 10 draws normal pressure test water in the water tank 9 through the pipeline 93, and is pressurized by the booster pump 10, so that the test pressure water of the set value enters the external water inlet main pipe 4, and quickly flows into the roller cavity through the internal water inlet main pipe 5. At this time, the terminal pressure gauge 8 accurately detects the pressure value of the test pressure water in the roller cavity. If the pressure water pressure value detected by the terminal pressure gauge 8 is not within the test standard pressure value range of the roller cavity, the pressure regulating device of the booster pump 10 can be fine-tuned to ensure that the pressure water pressure value detected by the terminal pressure gauge 8 is within the test standard pressure value range of the roller cavity. At the same time, when the terminal pressure gauge 8 detects a constant test standard value of the roller cavity, a closing signal instruction is transmitted to the second water inlet signal valve 42 through the signal line, and the second water inlet signal valve 42 quickly closes; 3. When the water level sensors 61 and 71 detect that the first water outlet branch pipe 6 and the second water outlet branch pipe 7 are full of the test pressure water, it indicates that the inner cavity of the roller 14 is also full of the test pressure water. At this time, the water level sensors 61 and 71 transmit a closing signal instruction to the water outlet signal valves 62 and 72 through the signal line, and the water outlet signal valves 62 and 72 quickly close; 4. When the test water pressure value detected by the terminal pressure gauge 8 reaches the test pressure standard of the inner cavity of the roller 14, the terminal pressure gauge 8 transmits a stop signal instruction to the booster pump 10 through the signal line (if multiple roller inner cavities are tested, the stop action is performed only after all the terminal pressure gauges 8 transmit the stop signal instruction to the booster pump 10 through the signal line), and the booster pump 10 performs a rapid stop action; 5. When the inner cavity of the roller is at the inspection standard value, the terminal pressure gauge 8 transmits the inner cavity pressure water standard pressure value detected by the terminal pressure gauge 8 to the controller 12 through a signal line. At the same time, the controller 12 tracks the inner cavity pressure water pressure value of the inspected roller during the inspection period. During this period, it is completely unattended. The monitoring personnel only need to call out the inspection pressure water pressure value fluctuation line to analyze the specific condition of the inner cavity defect of the roller; 6. When the controller 12 detects that the pressure value of the roller cavity inspection water pressure is a constant inspection standard value during the roller cavity inspection, and the roller cavity inspection setting time period is reached, the above two conditions are met, the controller 12 transmits a start signal command to the air compressor 11 through the signal line, and the air compressor 11 transmits a closing signal command to the first water inlet signal valve 41 and an opening signal command to the compressed air signal valve 43 through the signal line. At this time, the compressed air enters the roller cavity through the external water inlet main pipe 4 and the internal water inlet main pipe 5, and the dirt and inspection pressure water remaining in the roller cavity are blown to the bottom of the filter 92 of the water tank 9 by the high-pressure compressed air through the first water outlet branch pipe 6 and the second water outlet branch pipe 7; wherein the filter 92 is a stainless steel filter, and the filter hole reaches the set value, ensuring that the inspection pressure water can be put into use again after being filtered, and a drain valve is installed at a suitable position at the bottom of the water tank 9, requiring the dirt in the water tank 9 to be smoothly and thoroughly discharged through the drain valve under the condition of its own weight; thereby completing the roller cavity inspection operation; 7. After the roller inner cavity inspection is completed, the first water inlet signal valve 41, the second water inlet signal valve 42 and the water outlet signal valves 62 and 72 automatically return to the normally open state, and the compressed air signal valve 43 returns to the normally closed state, waiting for the next roller inner cavity inspection operation.
[0018] This device uses a special roller inspection platform (which can also be designed as a lifting platform) to fix batch offline rollers, so that the inspected rollers do not roll or tip over, and the inspection operation meets the enterprise safety operation standards. The inlet and outlet pressure water structure is made by using external glands and internal glands, so that the device can be easily disassembled and assembled, with high utilization rate, and improve the work efficiency of batch inspection operations. At the same time, the device and the inner walls of the rollers at both ends have good radial and axial sealing effects, so that the roller cavity inspection has accuracy. A pressure gauge is set at the end of the roller cavity so that the roller cavity inspection pressure value is truly transmitted to related equipment, which has the advantage of accuracy. By closing the water inlet signal valve device, when the pressure of the roller cavity inspection pressure water reaches the set value, the intelligent water inlet device is automatically closed to prevent the inspection pressure water from continuously entering the roller cavity, which has the advantage of saving energy. By closing the water outlet signal valve device, when the roller cavity is filled with inspection pressure water and all air is discharged, the intelligent device is automatically closed to prevent the inspection pressure water from being discharged from the roller cavity in time, which has the advantage of standard inspection. By using the pressure test water recycling device, the water used to inspect the inner cavity of the roller can be filtered and reused according to the standard, which has the advantages of saving energy and protecting the environment. By using the intelligent pressure pump, the pressure water of the inner cavity of the inspected roller reaches the standard setting value, and at the same time, it can meet the different precision pressure water required for the inner cavity inspection of different series of rollers, which has the functional advantages of making full use of the equipment. Through the intelligent control and monitoring device, all batches of inspected rollers have the advantage of realizing efficient and intelligent monitoring mode under the monitoring of the intelligent function of the equipment. Through the intelligent blowing and drying device, the inner cavity of the roller that has passed the inspection can be completely cleared of all dirt in the inner cavity of the roller under the operation of the intelligent blowing and drying device, and the remaining pressure water in the inner cavity of the roller can be quickly blown out and quickly dried under the action of compressed air. This device has significant advantages such as batch inspection, intelligent inspection, precise inspection, efficient inspection, environmental protection inspection, intelligent cleaning, and intelligent drying functions. Establish an efficient, accurate, safe and environmentally friendly batch offline roll inspection process, so as to obtain qualified rolls that exceed the general standards and provide them to the production line in a timely manner, so as to reduce carbon emissions and create more green economy.
Claims
1. An off-line inspection device for roller inner cavity, characterized in that: It includes an external gland, an internal gland, a blind cover, an external water inlet main pipe, an internal water inlet main pipe, a first water outlet branch pipe, a second water outlet branch pipe, a terminal pressure gauge, a water tank, a booster pump, an air compressor and a controller. The external gland and the internal gland are arranged at the front end of the roller by bolts, and the internal gland is located in the countersunk hole on the end face of the roller. The blind cover is arranged at the end of the roller by bolts. The terminal pressure gauge is arranged on the blind cover and connected to the inner cavity of the roller. The external water inlet main pipe is centrally arranged on the outside of the external gland. The first water outlet branch pipe and the second water outlet branch pipe are arranged on the outside of the external gland and are located on both sides of the external water inlet main pipe. A boss is centrally arranged on the inner side of the internal gland. The internal water inlet main pipe is centrally arranged on the end face of the boss and is connected to the external water inlet main pipe. A rectangular groove is arranged inside the boss along the circumferential direction, and water outlet holes are arranged on the end face at intervals along the circumferential direction. The first water outlet branch pipe is arranged on the inner side of the internal gland. The first water outlet branch pipe and the second water outlet branch pipe are connected to the water tank, the external water inlet main pipe is connected to the water tank via a pressure pump, the first water outlet branch pipe and the second water outlet branch pipe are connected to the water tank, a first water inlet signal valve and a second water inlet signal valve are arranged on the pipeline between the external water inlet main pipe and the pressure pump, the first water inlet signal valve is close to the pressure pump side, and the second water inlet signal valve is close to the front end of the roller, the output end of the air compressor is connected to the external water inlet main pipe and the connection point is located between the first water inlet signal valve and the second water inlet signal valve, a compressed air signal valve is arranged at the output end of the air compressor, a water level sensor and a water outlet signal valve are respectively arranged on the first water outlet branch pipe and the second water outlet branch pipe, and the controller is respectively electrically connected to the terminal pressure gauge, the pressure pump, the air compressor, the first water inlet signal valve, the second water inlet signal valve, the compressed air signal valve, the water level sensor and the water outlet signal valve.
2. The roller inner cavity offline inspection device according to claim 1 is characterized in that: The boss on the inner side of the internal pressure cover is provided with a radial sealing groove along the circumferential surface and an axial sealing groove at the root. Sealing rings are provided in the radial sealing groove and the axial sealing groove, and form a sealing connection with the inner wall and end face of the countersunk hole on the end face of the roller.
3. The roller inner cavity offline inspection device according to claim 1 or 2, characterized in that: The water tank is an anti-corrosion water tank, and is provided with a cover plate on the top surface and a filter screen in the middle. The pipe port connecting the booster pump and the water tank is located above the filter screen, and the pipe ports connecting the first water outlet branch pipe and the second water outlet branch pipe to the water tank are located below the filter screen.
4. The roller inner cavity offline inspection device according to claim 3 is characterized in that: The controller is provided with a monitoring screen, and the monitoring screen displays the detection signals of the terminal pressure gauge and the water level sensor, as well as the working status of the booster pump and the air compressor in real time.
5. The roller inner cavity offline inspection device according to claim 1 is characterized in that: The internal water inlet main pipe has a diameter of 50 mm and a length of 4 / 5 of the length of the roller.
6. The roller inner cavity offline inspection device according to claim 1, characterized in that: The device also comprises an inspection platform, wherein the surface of the inspection platform is provided with concave arc surfaces for placing the rollers at intervals, and roller fixing holes are arranged in a row on both sides of the concave arc surfaces.