Top lance sealing channel device integrated with clamping device

Abstract

The invention provides a top lance sealing channel device integrated with clamping devices, which comprises a water-cooling sealing base, a sealing channel body, a limiting protection assembly and two clamping devices, the water-cooling sealing base is arranged on a hot bent pipe, the sealing channel body is arranged on the water-cooling sealing base and used for allowing a top lance to enter and exit a vacuum chamber, and the limiting protection assembly is arranged on the sealing channel body. Comprising an upper guide frame, a pressing cover, a sealing air bag assembly, a sealing seat, a compensator assembly, a cooling blowing structure and a slag scraping plate, a limiting protection assembly comprises a plurality of connecting rods, a limiting disc and a protection cylinder, and two clamping devices are oppositely fixed to the upper portion of a water-cooling sealing base and used for clamping a sealing channel body and a hot bent pipe to guarantee the sealing vacuum state. The problem that the sealing air bag and the sealing packing of the vacuum sealing channel device are burnt out is solved, normal sealing in the vacuum treatment state is achieved, and the treatment technological process is guaranteed. And the hoisting space above the tank body is solved, the hoisting safety of the vacuum tank and the hot bent pipe is ensured, and operation accidents are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of RH refining furnace, in particular to a top gun sealing channel device integrated with a clamping device. BACKGROUND

[0002] The RH vacuum degassing device is a secondary refining process equipment for producing high-quality steel. The existing RH vacuum degassing device is equipped with a multifunctional top gun to realize the refining process needs such as oxygen blowing decarburization, chemical heating, vacuum tank heating, etc. during the refining of molten steel. It is very important to design an advanced and reliable vacuum sealing channel device to solve the high-temperature sealing problem between the top gun and the vacuum tank during the vacuum treatment and heating process.

[0003] The current practical RH top gun sealing channel devices at home and abroad mainly have two types: fixed on the structure platform and fixed on the vacuum tank hot bend pipe.

[0004] Fixed on the structure platform: the sealing channel device is fixed on the structure platform of the plant, and a cylinder expansion joint is used to realize the connection between the sealing channel device and the vacuum tank, so that the sealing channel device is separated from the vacuum tank and installed on the fixed platform. This not only reduces the elevation requirements of the plant, but also facilitates the maintenance and maintenance of the sealing channel device.

[0005] However, with this structure, the vacuum sealing channel is easily affected by the high-temperature gas flowing out of the tank, causing the sealing air bag to be easily burned out and unable to seal normally, thereby affecting the normal processing technology. When the vacuum tank is moved, the sealing channel device is separated from the vacuum tank, causing the hot gas in the tank to rise a lot, thereby frequently burning out the electrical equipment such as the sealing channel expansion joint and the cylinder limit switch, and the damage of the electrical equipment will make it impossible to confirm whether the expansion joint is in place when the tank is moved, often causing the expansion joint to be damaged, thereby causing production accidents. In addition, the sealing channel device is installed directly above the tank body, which occupies the lifting space of the vacuum tank and the hot bend pipe, thereby being not conducive to the lifting of the tank body, and the crane often pulls the expansion joint when lifting the tank, causing operation accidents.

[0006] Fixed on the vacuum tank hot bend pipe: the sealing channel device is fixed on the vacuum tank hot bend pipe and moves with the vacuum tank body. When the top gun is working, it passes through the sealing channel device into the vacuum tank for process treatment. When the top gun is not working for a long time, to prevent the sealing channel device from being burned out by the hot gas in the vacuum tank, the sealing channel device is rotated away from the top gun hole of the vacuum tank by rotating the handle, and the heat insulation blind flange is turned into the top gun hole of the vacuum tank. With this structure, it has the advantages of not occupying the lifting space of the vacuum tank and being conducive to the lifting and replacement of the vacuum tank and the hot bend pipe.

[0007] However, the sealing channel device is installed on the hot bending pipe, which can cause the sealing channel device to be baked by the high-temperature gas in the vacuum tank for a long time and at a close distance, so that the sealing air bag and the sealing packing are easily burned out, thereby the vacuum sealing cannot be completed, and the normal processing process is affected. Moreover, the manual switching of the sealing channel device and the heat insulation blind flange is labor-intensive and dangerous.

[0008] As shown above, the existing sealing channel installation technology still has certain limitations. SUMMARY

[0009] The present application is to solve the above problems, and aims to provide a top gun sealing channel device integrated with a clamping device.

[0010] The present application provides a top gun sealing channel device integrated with a clamping device, which has the following characteristics: a water-cooled sealing base, a sealing channel body, a limiting protection assembly, and two clamping devices,

[0011] The water-cooled sealing base is arranged on the hot bending pipe,

[0012] The sealing channel body is arranged on the water-cooled sealing base and is used for the top gun to enter and exit the vacuum chamber, and includes an upper guide frame, a pressing cover, a sealing air bag assembly, a sealing seat, a compensator assembly, a cooling and blowing structure, and a slag scraping plate connected in sequence from top to bottom,

[0013] The limiting protection assembly includes a plurality of connecting rods, a limiting disc, and a protection cylinder, one end of the plurality of connecting rods is fixed to the upper guide frame, the limiting disc is arranged on the other end of the plurality of connecting rods, a limiting hole is arranged at the center of the limiting disc, and the protection cylinder is arranged on the limiting disc and located directly above the limiting hole,

[0014] The two clamping devices are fixed to the upper side of the water-cooled sealing base and are used for clamping the sealing channel body and the hot bending pipe, so as to ensure the vacuum sealing state.

[0015] In the top gun sealing channel device integrated with the clamping device provided by the present application, the upper guide frame and the pressing cover can be screwed, the sealing air bag assembly is arranged between the upper guide frame and the pressing cover and tightly cooperates with the upper guide frame to form a seal, the pressing cover is screwed with the sealing seat, the sealing seat is screwed with the compensator assembly, the compensator assembly is screwed with the cooling and blowing structure, and the cooling and blowing structure is screwed with the slag scraping plate.

[0016] Further, the sealing air bag assembly includes an intermediate ring, a sealing air bag assembly gas inlet, a support ring, and an air bag, the intermediate ring is arranged on the corresponding step of the pressing cover, the upper surface thereof is matched with the step of the lower surface of the upper guide frame, the sealing air bag assembly gas inlet is located on the step at one end of the intermediate ring, the support ring is located in the air bag, and the support ring and the air bag are located on the inner step of the intermediate ring as a whole.

[0017] Further, the cooling and blowing structure is a ring-shaped groove body, which is provided with a cooling air curtain inlet, a cooling water inlet, a cooling water outlet, and a gas blowing inlet. The cooling and blowing structure can be divided into a cooling air curtain cavity and a cooling circulating water cavity. The cooling air curtain cavity is a ring-shaped cavity connected with the cooling air curtain inlet. The cooling circulating water cavity is a ring-shaped cavity body located below the cooling air curtain cavity and connected with the cooling water inlet and the cooling water outlet. The gas blowing inlet is provided below the blowing nozzle.

[0018] In the top gun sealing channel device integrated with the clamping device provided by the application, the clamping device can further have the following features: the clamping device comprises a mounting seat, a pushing cylinder, and a clamping jaw. The mounting seat is arranged on the water-cooled sealing base. The pushing cylinder is arranged on the mounting seat. The clamping jaw is arranged on the output end of the pushing cylinder. The clamping jaw is used to clamp the sealing channel body on the hot bending pipe under the pushing action of the pushing cylinder, so as to ensure the sealing vacuum state.

[0019] In the top gun sealing channel device integrated with the clamping device provided by the application, the clamping device can further have the following features: the inner diameter of the protection cylinder is equal to the diameter of the top gun, and the diameter of the limiting hole is not less than the inner diameter of the protection cylinder.

[0020] Effects and advantages of the application

[0021] According to the top gun sealing channel device integrated with the clamping device provided by the application, the problems of burning of the sealing air bag and the sealing packing of the vacuum sealing channel device are solved, the normal sealing of the vacuum treatment state is realized, and the treatment process is ensured. The hoisting space above the groove body is ensured, the hoisting safety of the vacuum groove and the hot bending pipe is ensured, and the operation accidents are avoided. Moreover, the automaticity and reliability of the operation are improved, the labor work amount and the work intensity are reduced. In addition, the equipment composition is simplified, the working conditions of the equipment are improved, the service life of the equipment is greatly improved, and the production and maintenance costs are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view of the application;

[0023] Figure 2 is a front view of the application;

[0024] Figure 3 is a partial structure schematic view of the sealing channel body in the application;

[0025] Figure 4 is a partial structure schematic view of the sealing air bag assembly in the application.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 10, water-cooled sealing base; 20, sealing passage body; 21, upper guide frame; 22, pressing cover; 23, sealing air bag assembly; 231, middle ring; 232, sealing air bag assembly air supply port; 233, support ring; 234, air bag; 24, sealing seat; 25, compensator assembly; 26, cooling and purging structure; 261, cooling air curtain inlet; 262, cooling water inlet; 263, cooling water outlet; 264, gas purging inlet; 265, cooling air curtain cavity; 266, cooling circulating water cavity; 267, purging nozzle; 27, slag scraping plate; 30, limit protection assembly; 31, connecting rod; 32, limit disc; 33, protection cylinder; 40, clamping device; 41, mounting seat; 42, push cylinder; 43, clamping jaw; A, ejector rod. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following embodiments are combined with the drawings to specifically describe the present application.

[0029] Embodiment 1

[0030] Figure 1 is a perspective view of the present application, Figure 2 is a front view of the present application, Figure 3 is a partial structure schematic view of the sealing passage body in the present application, Figure 4 is a partial structure schematic view of the sealing air bag assembly in the present application.

[0031] As Figures 1 to 4 shown, the present embodiment 1 provides a top gun sealing passage device integrated with a clamping device, comprising: a water-cooled sealing base 10, a sealing passage body 20, a limit protection assembly 30, and two clamping devices 40. Among them, the water-cooled sealing base 10 is arranged on the hot bending pipe.

[0032] As Figures 1 to 4 shown, the sealing passage body 20 is arranged on the water-cooled sealing base 10 and is used for the top gun to enter and exit the vacuum chamber, comprising an upper guide frame 21, a pressing cover 22, a sealing air bag assembly 23, a sealing seat 24, a compensator assembly 25, a cooling and purging structure 26, and a slag scraping plate 27 connected in sequence from top to bottom.

[0033] In the present embodiment, the upper guide frame 21 is screwed with the pressing cover 22, the sealing air bag assembly 23 is arranged between the upper guide frame 21 and the pressing cover 22 and tightly cooperates with the upper guide frame 21 to form a seal, the pressing cover 22 is screwed with the sealing seat 24, the sealing seat 24 is screwed with the compensator assembly 25, the compensator assembly 25 is screwed with the cooling and purging structure 26, and the cooling and purging structure 26 is screwed with the slag scraping plate 27.

[0034] In the embodiment, the sealing air bag assembly 23 comprises an intermediate ring 231, a sealing air bag assembly air inlet 232, a supporting ring 233, and an air bag 234, the intermediate ring 231 is arranged on the corresponding step of the pressing cover 22, the upper surface thereof is matched with the step of the lower surface of the upper guide bracket, the sealing air bag assembly air inlet 232 is arranged on the step at one end of the intermediate ring 231, the supporting ring 233 is arranged in the air bag 234, and the supporting ring 233 and the air bag 234 are integrally arranged on the step in the intermediate ring 231.

[0035] In the embodiment, the cooling and blowing structure 26 is a ring-shaped groove body, which is provided with a cooling air curtain inlet 261, a cooling water inlet 262, a cooling water outlet 263, and a gas blowing inlet 264, and can be divided into a cooling air curtain cavity 265 and a cooling circulating water cavity 266, the cooling air curtain cavity 265 is a ring-shaped cavity connected with the cooling air curtain inlet 261, the cooling circulating water cavity 266 is a ring-shaped cavity arranged below the cooling air curtain cavity 265 and connected with the cooling water inlet 262 and the cooling water outlet 263, and the gas blowing inlet 264 is provided with a blowing nozzle 267 below.

[0036] As shown in Figure 1 and Figure 2 , the limiting protection assembly 30 comprises a plurality of connecting rods 31, a limiting disc 32, and a protection cylinder 33, one end of the plurality of connecting rods 31 is fixed on the upper guide bracket 21, the limiting disc 32 is arranged on the other end of the plurality of connecting rods 31, a limiting hole is arranged at the center of the limiting disc 32, and the protection cylinder 33 is arranged on the limiting disc 32 and located directly above the limiting hole. The inner diameter of the protection cylinder 33 is equal to the diameter of the top gun, and the diameter of the limiting hole is not less than the inner diameter of the protection cylinder 33.

[0037] As shown in Figure 1 and Figure 2 , the clamping device 40 comprises a mounting seat 41, a pushing cylinder 42, and a clamping jaw 43, the mounting seat 41 is arranged on the water-cooled sealing base 10, the pushing cylinder 42 is arranged on the mounting seat 41, and the clamping jaw 43 is arranged on the output end of the pushing cylinder 42, and the clamping jaw 43 is used for clamping the sealing channel body 20 on the hot bending pipe under the pushing action of the pushing cylinder 42, so as to ensure the sealing vacuum state. The pushing cylinder 42 is preferably a high-temperature-resistant cylinder.

[0038] The present application is used for modern RH vacuum degassing refining equipment, and the function is to keep the vacuum chamber in a vacuum state during the refining process when the top gun is lifted, solve the high-temperature sealing problem between the top gun and the vacuum tank during the vacuum treatment and heating work process, and improve the refining quality of the molten steel.

[0039] Effects of the embodiment

[0040] The top gun sealing channel device integrated with the clamping device according to the application solves the problem of burning of the sealing air bag and the sealing packing ring of the vacuum sealing channel device, realizes normal sealing in the vacuum treatment state, ensures the treatment process, solves the hoisting space above the groove body, ensures the hoisting safety of the vacuum groove and the hot bending pipe, avoids operation accidents, improves the automation and reliability of operation, reduces the labor work amount and work intensity, simplifies the equipment composition, improves the working conditions of the equipment, greatly improves the service life of the equipment, and reduces the production and maintenance cost.

[0041] The above-mentioned embodiments are preferred cases of the application and are not used to limit the protection scope of the application.

Claims

1. A top gun seal passage device integrated with a clamping device, characterized by, The utility model relates to a sealing channel device of a top gun integrated with a clamping device, comprising a water-cooled sealing base, a sealing channel body, a position-limiting protection assembly and two clamping devices. The water-cooled sealing base is arranged on a hot-bent pipe. The sealing channel body is arranged on the water-cooled sealing base and is used for the top gun to enter and exit a vacuum chamber, comprising an upper guide frame, a pressing cover, a sealing air bag assembly, a sealing seat, a compensator assembly, a cooling and purging structure and a slag scraping plate connected in sequence from top to bottom. The position-limiting protection assembly comprises a plurality of connecting rods, a position-limiting disc and a protection cylinder. The two clamping devices are fixed oppositely above the water-cooled sealing base and are used for clamping the sealing channel body and the hot-bent pipe to ensure a sealed vacuum state.

2. The sealing channel device of the top gun integrated with the clamping device according to claim 1, wherein the upper guide frame is screwed with the pressing cover, the sealing air bag assembly is arranged between the upper guide frame and the pressing cover and is tightly matched with the upper guide frame to form a seal, the pressing cover is screwed with the sealing seat, the sealing seat is screwed with the compensator assembly, the compensator assembly is screwed with the cooling and purging structure, and the cooling and purging structure is screwed with the slag scraping plate.

3. The sealing channel device of the top gun integrated with the clamping device according to claim 2, wherein the sealing air bag assembly comprises an intermediate ring, a sealing air bag assembly air inlet, a supporting ring and an air bag, the intermediate ring is arranged on a corresponding step of the pressing cover, the upper surface of the intermediate ring is matched with the step of the lower surface of the upper guide frame, the sealing air bag assembly air inlet is located on a step at one end of the intermediate ring, the supporting ring is located in the air bag, and the supporting ring and the air bag are located on the inner step of the intermediate ring as a whole. wherein 4. The sealing channel device of the top gun integrated with the clamping device according to claim 2, wherein the cooling and purging structure is an annular groove body, the annular groove body is provided with a cooling air curtain inlet, a cooling water inlet, a cooling water outlet and a gas purging inlet, the cooling and purging structure can be divided into a cooling air curtain cavity and a cooling circulating water cavity, the cooling air curtain cavity is an annular cavity connected with the cooling air curtain inlet, the cooling circulating water cavity is an annular cavity located below the cooling air curtain cavity and connected with the cooling water inlet and the cooling water outlet, and a purging nozzle is arranged below the gas purging inlet.

5. The sealing channel device of the top gun integrated with the clamping device according to claim 1, wherein the clamping device comprises a mounting seat, a pushing cylinder and a clamping jaw, the mounting seat is arranged on the water-cooled sealing base, the pushing cylinder is arranged on the mounting seat, the clamping jaw is arranged on the output end of the pushing cylinder, and the clamping jaw is used for clamping the sealing channel body on the hot-bent pipe under the pushing action of the pushing cylinder to ensure a sealed vacuum state. wherein ​ ​ wherein ​ ​ wherein ​ 6. The top gun seal lane device integrated with a clamping device according to claim 1, characterized in that: wherein The inner diameter of the protection cylinder is equal to the diameter of the top gun, and the diameter of the limiting hole is not less than the inner diameter of the protection cylinder.

Images