Three-point type converter backing ring spherical hinge supporting structure capable of eliminating abnormal sound

Abstract

A three-point type converter backing ring spherical hinge supporting structure capable of eliminating abnormal sound comprises three spherical hinge supporting assemblies distributed in the circumferential direction of a backing ring at intervals, lubricating oil nozzles are installed on the spherical hinge supporting assemblies, an oil supply device is arranged outside a converter, and oil is supplied to lubricating oil cavities of the spherical hinge supporting assemblies through oil pipes. Lubricating oil can flow into a spherical surface between the spherical pad and the spherical seat for lubrication, so that friction abnormal sound is eliminated, and the service life of equipment is prolonged; check rings are installed on the two sides of a pin shaft of the spherical hinge supporting assembly, the check rings can limit axial displacement of the pin shaft so as to eliminate abnormal sound, by arranging a pressure sensor, pressure changes can be monitored when the check rings are damaged and the pin shaft has axial displacement, data are transmitted to a data acquisition instrument in real time, and therefore the displacement condition of the pin shaft is monitored on line, and the working efficiency is improved. The situation that the pin shaft moves out of the lug seat is prevented, damage to the spherical hinge supporting structure caused by moving of the pin shaft is effectively avoided, the service life of the spherical hinge supporting structure is prolonged, and stable and reliable operation of converter equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of ball joint supports for converters, and in particular to a three-point converter support ring ball joint support structure capable of eliminating abnormal noise. Background Art

[0002] Converter steelmaking is a widely used steelmaking method. At present, there are different types of converters in operation in steel mills all over the world. According to the connection method between the converter body and the support ring, there are three-point ball joint support + blocker converter on the upper part of the support ring, two-point support + blocker converter on the upper ear shaft of the support ring, spring plate suspension + blocker converter, furnace body lower suspension support + blocker converter, five-point lower suspension + guide seat converter, etc. For the blocker converter, after a period of use, due to the irregular thermal deformation of the converter, a certain gap will be generated between the blocker on the support ring and the blocker on the furnace body, causing the plug to gradually fall off, and when the converter is tilted, under the strong impact of the furnace body on the blocker, a large abnormal noise will be emitted, which will cause serious hidden dangers to the safe operation of the converter equipment.

[0003] The three-point ball joint supported converter will have the problem of abnormal noise after serving for a period of time. If not handled, the abnormal noise will become louder and louder until it affects production safety. The main structure of the three-point ball joint support includes a support bolt. The top of the support bolt is used to connect with the furnace body of the converter. The bottom end of the support bolt is screwed into the threaded hole in the middle of the pin shaft. The two ends of the pin shaft are respectively passed through the through holes of the two ear seats. The ear seats are installed on the upper surface of the support ring, and the outer side of the support bolt is provided with a spherical pad and a spherical seat. The spherical surfaces that fit each other can adapt to the deformation of the furnace body when it tilts or the furnace shell and the support ring expand due to heat in different directions. The main reasons for the abnormal noise of the three-point ball joint supported converter are the following two aspects.

[0004] 1. The friction pair between the spherical pad and the spherical seat of the ball joint support is poorly lubricated, resulting in increased friction resistance between the spherical pad and the spherical seat, and even biting between the mating spheres, causing the ball joint support to lose the function of thermal expansion of the furnace body and produce abnormal friction noise.

[0005] 2. Due to the irregular thermal deformation of the converter, the gaskets, baffles, etc. produce gaps due to local yielding and deformation after being loaded. During the tilting process of the converter, the gap of the baffle at the bottom of the support ring causes impact between the furnace body and the baffle, resulting in the deflection of the three-point ball joint support, which causes the axial displacement of the pin and produces abnormal impact noise, which may lead to the breaking of the fastening bolts of the shaft end baffle, the fall-off of the shaft end baffle, and the pin jumping out of the pin seat, seriously threatening production safety. Summary of the invention

[0006] The purpose of the present invention is to provide a three-point converter support ring ball joint support structure capable of eliminating abnormal noise, thereby eliminating abnormal noise from two aspects of spherical surface lubrication and preventing pin shaft displacement to ensure safety.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a three-point converter support ring ball joint support structure capable of eliminating abnormal noise, including three ball joint support assemblies distributed at intervals along the circumference of the support ring, the ball joint support assembly including a support bolt, the top of the support bolt is used to connect with the furnace body of the converter, the bottom end of the support bolt is screwed into the threaded hole in the middle of the pin shaft, the two ends of the pin shaft are respectively penetrated through the through holes of two ear seats, the ear seats are installed on the upper surface of the support ring, the pin shaft is arranged along the tangent direction of the support ring and is perpendicular to the support bolt, and the outer side of the support bolt is sequentially sleeved with an upper spherical pad, an upper spherical seat, a lower spherical pad and a lower spherical seat from top to bottom. , there are spherical surfaces that fit each other between the upper spherical pad and the upper spherical seat, and between the lower spherical pad and the lower spherical seat. The upper spherical pad, the upper spherical seat, the lower spherical pad and the lower spherical seat cooperate to form a lubricating oil cavity surrounding the support bolt. A lubricating oil nozzle is installed on any one or more of the upper spherical pad, the upper spherical seat, the lower spherical pad and the lower spherical seat. An oil supply device is provided outside the converter. The oil pipe of the oil supply device passes through the ear shaft of the floating end of the support ring and is connected to the distributor provided on the support ring. The distributor is connected to the lubricating oil nozzles of the three ball joint support assemblies through the oil pipe, so that the lubricating oil can flow into the lubricating oil cavity of the three ball joint support assemblies at the same time and lubricate the spherical surface; The two ends of the pin shaft in the length direction pass through two ear seats respectively, and annular grooves are provided on both sides of the pin shaft extending from the ear seats, and an upper half retaining ring and a lower half retaining ring are installed in the annular grooves. The ends of the upper half retaining ring and the lower half retaining ring are connected to form a full-circle retaining ring, and the end faces of the full-circle retaining rings on both sides of the pin shaft are respectively clamped on the surfaces of the two ear seats to limit the axial displacement of the pin shaft relative to the ear seats; a retaining seat is provided on the side of the two ear seats facing away from each other, and the retaining seat is installed on the upper surface of the support ring, and a pressure sensor is installed on the retaining seat. A data acquisition instrument is provided on the outside of the converter. When the pin shaft undergoes axial displacement relative to the ear seat, the pressure sensor can contact the end of the pin shaft and transmit the pressure data to the data acquisition instrument.

[0008] Preferably, the lubricating oil nozzle is inserted into the side wall of the upper spherical seat.

[0009] Preferably, a conductive slip ring is sleeved on the ear shaft at the driving end of the support ring, the pressure sensor is connected to the conductive slip ring through a cable, and the conductive slip ring is connected to the data acquisition instrument through the cable.

[0010] Preferably, the outer sheath of the cable is provided with a high temperature protection sheath.

[0011] According to the above technical solution, the beneficial effects of the present invention are: 1. The present invention aims to solve the problem that the existing ball joint support structure lacks effective lubrication between the spherical pad and the spherical seat, causing dry friction and boundary friction, and even biting, thereby causing abnormal noise. The lubricating oil cavity is supplied with oil through an oil supply device, an oil pipe and a lubricating oil nozzle. The lubricating oil can flow into the spherical surface between the spherical pad and the spherical seat for lubrication. Therefore, the friction pair in the ball joint support can be regularly lubricated without stopping the operation of the converter equipment, thereby eliminating friction noise and extending the service life of the equipment.

[0012] 2. In view of the abnormal noise caused by axial displacement of the pin shaft of the existing ball joint support structure, the present invention optimizes the ball joint support device. The axial displacement of the pin shaft can be limited by the retaining ring to eliminate the abnormal noise, and by arranging a pressure sensor, the pressure change can be monitored when the retaining ring is damaged and the pin shaft is axially displaced, and the data can be transmitted to the data acquisition instrument in real time, so as to monitor the displacement of the pin shaft online and prevent the pin shaft from jumping out of the ear seat, effectively avoiding the damage of the ball joint support structure to the ball joint support structure due to the displacement of the pin shaft, extending the service life of the ball joint support structure, and ensuring the smooth and reliable operation of the converter equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic top view of the overall structure of the present invention; Figure 2 for Figure 1 A partial view in the direction of B; Figure 3 for Figure 2 Schematic diagram of the left side cross-section.

[0014] Markings in the figure: 1. Oil supply device, 2. Rotary joint, 3. Floating end ear shaft, 4. Distributor, 5. Oil pipe, 6. Lubricating oil nozzle, 7. Ball joint support assembly, 8. Ear seat, 9. Upper half retaining ring, 10. Lower half retaining ring, 11. Block seat, 12. Pressure sensor, 13. Cable, 14. High temperature protection sleeve, 15. Drive end ear shaft, 16. Conductive slip ring, 17. Data acquisition instrument, 18. Pillar bolt, 19. Upper spherical pad, 20. Upper spherical seat, 21. Lower spherical pad, 22. Lower spherical seat, 23. Pin shaft. DETAILED DESCRIPTION

[0015] With reference to the accompanying drawings, the specific implementation is as follows: like Figure 1 As shown, a three-point converter support ring ball joint support structure capable of eliminating abnormal noise includes three ball joint support assemblies 7 distributed at intervals along the circumference of the support ring, as shown in FIG. Figure 2 , 3As shown, the ball joint support assembly 7 includes a support bolt 18, the top end of the support bolt 18 is used to connect with the furnace body of the converter, the bottom end of the support bolt 18 is screwed into the threaded hole in the middle of the pin shaft 23, the two ends of the pin shaft 23 are respectively penetrated through the through holes of the two ear seats 8, the ear seats 8 are installed on the upper surface of the support ring, the pin shaft 23 is arranged along the tangent direction of the support ring and is perpendicular to the support bolt 18, the outer side of the support bolt 18 is sequentially sleeved with an upper spherical pad 19, an upper spherical seat 20, a lower spherical pad 21 and a lower spherical seat 22 from top to bottom, and there are spherical surfaces that fit each other between the upper spherical pad 19 and the upper spherical seat 20, and between the lower spherical pad 21 and the lower spherical seat 22.

[0016] The upper spherical pad 19, the upper spherical seat 20, the lower spherical pad 21 and the lower spherical seat 22 cooperate to form a lubricating oil chamber surrounding the support bolt 18. The side wall of the upper spherical seat 20 is inserted with a lubricating oil nozzle 6. An oil supply device 1 is provided on the outside of the converter. The oil pipe 5 of the oil supply device 1 passes through the floating end ear shaft 3 of the support ring and is connected to the distributor 4 arranged on the support ring. The distributor 4 is connected to the lubricating oil nozzles 6 of the three ball joint support assemblies 7 through the oil pipe 5, so that the lubricating oil can flow into the lubricating oil chambers of the three ball joint support assemblies 7 at the same time and lubricate the spherical surface. Without stopping the converter equipment, the friction pair in the ball joint support can be lubricated to eliminate abnormal friction noise and extend the service life of the equipment.

[0017] like Figure 2 , 3 As shown, both ends of the pin shaft 23 in the length direction pass through the two ear seats 8 respectively, and annular grooves are respectively provided on both sides of the pin shaft 23 extending from the ear seats 8, in which an upper half retaining ring 9 and a lower half retaining ring 10 are fitted, and the ends of the upper half retaining ring 9 and the lower half retaining ring 10 are connected to form a full-circle retaining ring, and the end faces of the full-circle retaining rings on both sides of the pin shaft 23 are respectively clamped on the surfaces of the two ear seats 8 to limit the axial displacement of the pin shaft 23 relative to the ear seats 8.

[0018] Due to the long-term high-temperature operation of the converter, irregular thermal deformation may easily cause gaps, which will form an axial impact load on the pin 23. The upper half retaining ring 9 and the lower half retaining ring 10 may be damaged and fail under the impact load for a long time. Figure 2 , 3 As shown, a stopper 11 is provided on the side of the two ear seats 8 facing away from each other, the stopper 11 is installed on the upper surface of the support ring, a pressure sensor 12 is installed on the stopper 11, a conductive slip ring 16 is sleeved on the ear shaft 15 at the driving end of the support ring, the pressure sensor 12 is connected to the conductive slip ring 16 through a cable 13, a high-temperature protection sleeve 14 is sleeved on the outer side of the cable 13, a data acquisition instrument 17 is provided on the outside of the converter, and the conductive slip ring 16 is connected to the data acquisition instrument 17 through the cable 13.

[0019] When the pin 23 undergoes axial displacement relative to the ear seat 8, the pressure sensor 12 can contact the end of the pin 23 and transmit the pressure data to the data acquisition instrument 17, thereby monitoring the pin displacement online and preventing the pin from slipping out of the ear seat, effectively avoiding damage to the ball joint support structure caused by the pin movement and extending the service life of the ball joint support structure. The conductive slip ring 16 solves the problem of cable entanglement in the scenario of continuous rotation of the converter, ensuring accurate signal transmission and improving equipment working efficiency and reliability.

Claims

1. A three-point converter support ring ball joint support structure capable of eliminating abnormal noise, comprising three ball joint support assemblies (7) spaced apart along the circumference of the support ring, characterized in that: The ball joint support assembly (7) comprises a support bolt (18), the top end of the support bolt (18) is used to connect with the furnace body of the converter, the bottom end of the support bolt (18) is screwed into the threaded hole in the middle of the pin shaft (23), the two ends of the pin shaft (23) are respectively penetrated into the through holes of the two ear seats (8), the ear seats (8) are installed on the upper surface of the support ring, the pin shaft (23) is arranged along the tangent direction of the support ring and is perpendicular to the support bolt (18), the outer side of the support bolt (18) is sequentially sleeved with an upper spherical pad (19), an upper spherical seat (20), a lower spherical pad (21) and a lower spherical seat (22) from top to bottom, and there are mutually contacting surfaces between the upper spherical pad (19) and the upper spherical seat (20), and between the lower spherical pad (21) and the lower spherical seat (22). The upper spherical pad (19), the upper spherical seat (20), the lower spherical pad (21) and the lower spherical seat (22) cooperate to form a lubricating oil chamber surrounding the support bolt (18); a lubricating oil nozzle (6) is installed on any one or more of the upper spherical pad (19), the upper spherical seat (20), the lower spherical pad (21) and the lower spherical seat (22); an oil supply device (1) is provided outside the converter; an oil pipe (5) of the oil supply device (1) passes through the floating end ear shaft (3) of the support ring and is connected to a distributor (4) provided on the support ring; the distributor (4) is simultaneously connected to the lubricating oil nozzles (6) of the three ball joint support assemblies (7) through the oil pipe (5), so that the lubricating oil can simultaneously flow into the lubricating oil chambers of the three ball joint support assemblies (7) and lubricate the spherical surface; The two ends of the pin shaft (23) in the length direction respectively penetrate the two ear seats (8); the two sides of the pin shaft (23) extending from the ear seats (8) are respectively provided with annular grooves; an upper half retaining ring (9) and a lower half retaining ring (10) are cooperatively installed in the annular grooves; the ends of the upper half retaining ring (9) and the lower half retaining ring (10) are connected to form a full-circle retaining ring; the end faces of the full-circle retaining rings on both sides of the pin shaft (23) are respectively clamped on the surfaces of the two ear seats (8) to limit the axial displacement of the pin shaft (23) relative to the ear seats (8); a retaining seat (11) is respectively provided on the side of the two ear seats (8) facing away from each other; the retaining seat (11) is installed on the upper surface of the support ring; a pressure sensor (12) is installed on the retaining seat (11); a data acquisition instrument (17) is provided outside the converter; when the pin shaft (23) is axially displaced relative to the ear seat (8), the pressure sensor (12) can contact the end of the pin shaft (23) and transmit pressure data to the data acquisition instrument (17).

2. The three-point converter support ring ball joint support structure capable of eliminating abnormal noise according to claim 1, characterized in that: The lubrication nozzle (6) is inserted into the side wall of the upper spherical seat (20).

3. The three-point converter support ring ball joint support structure capable of eliminating abnormal noise according to claim 1, characterized in that: A conductive slip ring (16) is sleeved on the driving end ear shaft (15) of the support ring, the pressure sensor (12) is connected to the conductive slip ring (16) via a cable (13), and the conductive slip ring (16) is connected to a data acquisition instrument (17) via the cable (13).

4. The three-point converter support ring ball joint support structure capable of eliminating abnormal noise according to claim 3, characterized in that: The outer side of the cable (13) is provided with a high-temperature protective sleeve (14).

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