Pressure detection device for protecting furnace cover of LF furnace

Abstract

The utility model provides a pressure detection device for protecting an LF furnace cover. The pressure detection device comprises a furnace cover body; a pressure detector; a mounting seat is fixedly connected to the upper surface of the furnace cover body, mounting holes are formed in the mounting seat and the furnace cover body, fixing parts used for mounting a pressure detector are slidably connected to the inner surfaces of the mounting holes, and blocking parts are arranged in the fixing parts; two first mounting plates are fixedly connected to the upper surface of the mounting base, and a control piece is rotationally connected between the outer surfaces of the two first mounting plates. The pressure detector is installed in the protective shell to be fixed through the cooperation of the control piece and the fixing piece, meanwhile, through deformation of a heat insulation ring and a sealing ring in the blocking piece, the sealing performance between the pressure detector and the furnace cover body is greatly improved, high-temperature gas in a furnace is prevented from leaking, and the accuracy of pressure detection is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to LF furnace furnace cover technical field, specifically, relate to a kind of pressure detection device of protection LF furnace furnace cover. BACKGROUND

[0002] LF furnace is a kind of furnace outside refining equipment used in steel smelting process, mainly used for adjusting the chemical composition of molten steel, temperature and removing impurities in molten steel, it is usually used in steel plant, after molten steel is poured into converter from blast furnace or electric arc furnace, further refining is carried out.

[0003] In the process of LF furnace operation, the environment in the furnace is high temperature, high pressure and complex, at present, it is common practice to fix pressure sensor on furnace cover by bolt, but in this harsh working condition, high temperature in the furnace causes bolt to frequently expand and contract with heat, and it is extremely easy to loosen, once bolt loosens, gap will be generated between sensor and furnace cover, high temperature gas in the furnace leaks, seriously interferes with pressure sensor detection, and data accuracy is greatly discounted.

[0004] Therefore we make improvement, and propose a kind of pressure detection device of protection LF furnace furnace cover. UTILITY MODEL CONTENT

[0005] The utility model aims at: high temperature in the furnace causes bolt to frequently expand and contract with heat, and it is extremely easy to loosen, once bolt loosens, gap will be generated between sensor and furnace cover, high temperature gas in the furnace leaks, seriously interferes with pressure sensor detection, and data accuracy is greatly discounted.

[0006] In order to realize the above-mentioned invention purpose, the utility model provides the following technical scheme:

[0007] A kind of pressure detection device of protection LF furnace furnace cover to improve the above-mentioned problem.

[0008] The application is as follows:

[0009] It includes: furnace cover body;Pressure detector;The upper surface of the furnace cover body is fixedly connected with mounting seat, the inside of the mounting seat and furnace cover body is all set with mounting hole, the inner surface of the mounting hole is slidably connected with the fixed part for installing pressure detector, the inside of the fixed part is provided with barrier, the upper surface of the mounting seat is fixedly connected with two mounting plates one, the outer surface between the two mounting plates one is rotatably connected with control member.

[0010] The above-mentioned technical scheme is realized, the cooperation of control member and fixed part makes pressure detector install in the inside of protective shell and is fixed, simultaneously, the sealing property between pressure detector and furnace cover body is greatly improved by the deformation of heat insulation ring and sealing ring in barrier, high temperature gas in the furnace is prevented from leaking, and the accuracy of pressure detection is ensured.

[0011] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, the fixing member comprises a sleeve, the sleeve is arranged inside the mounting hole, the inner surface of the sleeve is slidably connected with a protective shell, the pressure detector is slidably arranged inside the protective shell, the inner surface of the sleeve is slidably connected with a pressing block, and the pressing block is attached to the protective shell and the pressure detector.

[0012] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, the lower surface of the protective shell is conically arranged.

[0013] The above technical solution is realized, when the pressure detector is installed, the heat insulation ring and the sealing ring are respectively placed inside the heat insulation groove and the sealing groove, then the sleeve and the pressure detector are respectively slid into the mounting hole and the protective shell, and then the protective shell is slid into the sleeve, because the lower end of the protective shell is conically arranged, the direct damage of molten steel splashing to the pressure detector is prevented.

[0014] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, the barrier member comprises a heat insulation ring and a sealing ring, the heat insulation ring and the sealing ring are both arranged in three, the inner surface of the mounting hole, the sleeve and the protective shell are all provided with a heat insulation groove, the inner surface of the mounting hole, the sleeve and the protective shell are all provided with a sealing groove on one side of the heat insulation groove, and the heat insulation ring and the sealing ring are slidably arranged inside the heat insulation groove and the sealing groove respectively.

[0015] The above technical solution is realized, wherein the heat insulation ring is composed of ceramic fiber, the ceramic fiber has extremely low thermal conductivity, and the high temperature in the LF furnace is effectively blocked from being transmitted, the sealing ring is made of high-temperature-resistant and high-elasticity silicone rubber, can effectively fill the tiny gap between the sensor and the furnace cover, prevent high-temperature gas leakage, and ensure the stability of the pressure detection environment, and the initial shape of the heat insulation ring and the sealing ring is both a ring-shaped annular with a circular cross section, and the blocking effect is greatly improved through the deformation of the heat insulation ring and the sealing ring.

[0016] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, the control member comprises a rotating shaft, both ends of the rotating shaft are rotatably connected with two mounting plates respectively, the outer surface of the rotating shaft is fixedly connected with a gear, the upper surface of the pressing block is fixedly connected with a toothed plate, and the gear is meshedly connected with the toothed plate.

[0017] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, one end of the rotating shaft penetrates through the mounting plate one and is fixedly connected with a worm wheel, the front side of the mounting plate one is fixedly connected with two mounting plate twos, the outer surfaces of the two mounting plate twos are rotationally connected with a worm, the worm is meshingly connected with the worm wheel, and one end of the worm penetrates through the mounting plate two and is fixedly connected with a knob.

[0018] As a preferred embodiment of the pressure detection device for protecting the LF furnace cover provided by the utility model, the upper surface of the mounting seat is fixedly connected with a limiting frame on the two sides of the toothed plate, and the front and rear sides of the outer surface of the toothed plate are fixedly connected with connecting plates.

[0019] The above technical scheme is realized, the toothed plate is moved from left to right, the connecting plates on the two sides of the toothed plate are attached together respectively with the two limiting frames, at this time, the toothed plate is meshingly connected with the gear, the pressing block is located directly above the pressure detector, then the knob is rotated to drive the worm to rotate, the worm wheel drives the rotating shaft and the gear to rotate synchronously, because the gear is meshingly connected with the toothed plate, the rotation of the gear drives the toothed plate and the pressing block to move downwards, the pressing block is slid into the sleeve and exerts a certain force on the protective shell, the pressure detector and the sleeve, so as to extrude the heat insulation ring and the sealing ring to make them deform, and the toothed plate and the pressing block are fixed through the self-locking action of the worm wheel and the worm.

[0020] Compared with the prior art, the utility model has the advantages of:

[0021] The utility model provides a kind of pressure detection device for protecting LF furnace cover, comprising: furnace cover body;Pressure detector;The upper surface of the furnace cover body is fixedly connected with mounting seat, the inside of the mounting seat and furnace cover body is equipped with mounting hole, the inner surface of the mounting hole is slidably connected with the fixed part for installing pressure detector, the inside of the fixed part is provided with barrier, the upper surface of the mounting seat is fixedly connected with two mounting plate one, the outer surface of two mounting plate one is rotationally connected with control member.The cooperation of control member and fixed part makes pressure detector install in the inside of protective shell and is fixed, simultaneously, the deformation of heat insulation ring and sealing ring in barrier greatly improves the sealing between pressure detector and furnace cover body, prevents high-temperature gas leakage in furnace, guarantees the accuracy of pressure detection. ACCURACY

[0022] Figure 1 The structure schematic view of the pressure detection device for protecting LF furnace cover provided by the utility model is provided;

[0023] Figure 2 The enlarged structure schematic view of A of the pressure detection device for protecting LF furnace cover provided by the utility model is provided;

[0024] Figure 3 The front sectional view of the mounting seat of the pressure detection device of the LF furnace cover is provided for the protection of the application.

[0025] Figure 4 The enlarged structure schematic view of B of the pressure detection device of the LF furnace cover is provided for the protection of the application.

[0026] Figure 5 The protection shell structure schematic view of the pressure detection device of the LF furnace cover is provided for the protection of the application.

[0027] Indicated in the figure:

[0028] 1, furnace cover body; 2, mounting seat; 21, mounting hole; 22, sleeve; 23, protection shell; 24, pressure sensor; 25, pressing block; 3, heat insulation groove; 31, heat insulation ring; 32, sealing groove; 33, sealing ring; 4, mounting plate one; 41, rotating shaft; 42, gear; 43, toothed plate; 44, worm gear; 45, mounting plate two; 46, worm; 47, knob; 48, limiting frame; 49, connecting plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents some embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] It should be noted that the embodiments and features and technical solutions in the embodiments in the present application can be combined with each other without conflict.

[0032] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0033] In the description of the utility model, it is necessary to explain that the position or location relation indicated by the terms "upper", "lower" and the like is the position or location relation shown based on the drawings, or is the position or location relation commonly placed when the product of the invention is used, or is the position or location relation commonly understood by the person skilled in the art, and such terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element indicated must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0034] In order for the person skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings.

[0035] It should be noted that the embodiments in the utility model and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0036] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] Please refer to Figures 1-5The utility model provides a kind of pressure detection device of LF furnace cover, comprising: furnace cover body 1;Pressure detector 24;The upper surface of furnace cover body 1 is fixedly connected with mounting seat 2, mounting seat 2 and the inside of furnace cover body 1 are all provided with mounting hole 21, the inner surface of mounting hole 21 is slidably connected with the fixed part for installing pressure detector 24, the inside of fixed part is provided with barrier, the upper surface of mounting seat 2 is fixedly connected with two mounting plate one 4, the outer surface between two mounting plate one 4 is rotatably connected with control part.Barrier includes heat insulation ring 31 and sealing ring 33, heat insulation ring 31 and sealing ring 33 are all provided with three, the inner surface of mounting hole 21, sleeve 22 and protective shell 23 is provided with heat insulation groove 3, the inner surface of mounting hole 21, sleeve 22 and protective shell 23 is provided with sealing groove 32 on the side of heat insulation groove 3, heat insulation ring 31 and sealing ring 33 are slidably arranged in heat insulation groove 3 and sealing groove 32 respectively.Control part includes rotating shaft 41, the both ends of rotating shaft 41 are rotatably connected with two mounting plate one 4, the outer surface of rotating shaft 41 is fixedly connected with gear 42, the upper surface of pressing block 25 is fixedly connected with toothed plate 43, gear 42 is meshingly connected with toothed plate 43.The end of rotating shaft 41 passes through mounting plate one 4 and is fixedly connected with worm gear 44, the front side of one of mounting plate one 4 is fixedly connected with two mounting plate two 45, the outer surface between two mounting plate two 45 is rotatably connected with worm 46, worm 46 is meshingly connected with worm gear 44, the end of worm 46 passes through mounting plate two 45 and is fixedly connected with knob 47.The upper surface of mounting seat 2 is fixedly connected with limit frame 48 on the both sides of toothed plate 43, the front and rear sides of the outer surface of toothed plate 43 are fixedly connected with connecting plate 49.

[0038] Make toothed plate 43 move from left to right, make the connecting plate 49 of the both sides of toothed plate 43 adhere together respectively with two limit frames 48, at this time, toothed plate 43 is meshingly connected with gear 42, pressing block 25 is located the right above pressure detector 24, then rotate knob 47 and drive worm 46 to rotate, make worm gear 44 rotate simultaneously drive rotating shaft 41 and gear 42 synchronous rotation, because gear 42 is meshingly connected with toothed plate 43, the rotation of gear 42 drives toothed plate 43 and pressing block 25 to move downwards, make pressing block 25 slide to the inside of sleeve 22 and exert certain force to protective shell 23, pressure detector 24 and sleeve 22, to extrude heat insulation ring 31 and sealing ring 33, make it change shape, simultaneously, through the self-locking effect of worm gear 44 and worm 46, toothed plate 43 and pressing block 25 are fixed, wherein heat insulation ring 31 is composed of ceramic fiber, utilizes the extremely low thermal conductivity of ceramic fiber to effectively block the high temperature transmission in LF furnace, sealing ring 33 adopts high-temperature-resistant, high-elasticity silicone rubber, can effectively fill the tiny gap between sensor and furnace cover, prevent high-temperature gas leakage, ensure that pressure detection environment is stable, wherein the initial shape of heat insulation ring 31 and sealing ring 33 is annular with circular cross section, the effect of blocking is greatly improved through the deformation of heat insulation ring 31 and sealing ring 33.

[0039] Please refer to Figure 4 and Figure 5 The fixing part comprises a sleeve 22 arranged inside the mounting hole 21, the inner surface of the sleeve 22 is slidably connected with a protective shell 23, the protective shell 23 is slidably arranged inside the protective shell 23, the inner surface of the sleeve 22 is slidably connected with a pressing block 25, and the pressing block 25 is attached to the protective shell 23 and the pressure detector 24. The lower surface of the protective shell 23 is conical.

[0040] When installing the pressure detector 24, first place the heat insulation ring 31 and the sealing ring 33 into the heat insulation groove 3 and the sealing groove 32 respectively, then slide the sleeve 22 and the pressure detector 24 into the mounting hole 21 and the protective shell 23 respectively, and then slide the protective shell 23 into the sleeve 22. Because the lower end of the protective shell 23 is conical, it prevents the molten steel from splashing and directly damaging the pressure detector 24.

[0041] Specifically, when installing the pressure detector 24, first place the heat insulation ring 31 and the sealing ring 33 into the heat insulation groove 3 and the sealing groove 32 respectively, then slide the sleeve 22 and the pressure detector 24 into the mounting hole 21 and the protective shell 23 respectively, and then slide the protective shell 23 into the sleeve 22. Because the lower end of the protective shell 23 is conical, it prevents the molten steel from splashing and directly damaging the pressure detector 24. Move the toothed plate 43 from left to right, so that the connecting plates 49 on both sides of the toothed plate 43 are attached to the two limiting frames 48 respectively. At this time, the toothed plate 43 is in meshing connection with the gear 42, the pressing block 25 is located directly above the pressure detector 24, then rotate the knob 47 to drive the worm 46 to rotate, so that the worm gear 44 drives the rotating shaft 41 and the gear 42 to rotate synchronously. Because the gear 42 is in meshing connection with the toothed plate 43, the rotation of the gear 42 drives the toothed plate 43 and the pressing block 25 to move downward, so that the pressing block 25 slides into the sleeve 22 and exerts a certain force on the protective shell 23, the pressure detector 24 and the sleeve 22, thereby extruding the heat insulation ring 31 and the sealing ring 33 to make them deform. At the same time, the toothed plate 43 and the pressing block 25 are fixed by the self-locking action of the worm gear 44 and the worm 46. The heat insulation ring 31 is composed of ceramic fiber, which effectively blocks the high temperature in the LF furnace by using the extremely low thermal conductivity of ceramic fiber. The sealing ring 33 is made of high-temperature-resistant and high-elasticity silicone rubber, which can effectively fill the small gap between the sensor and the furnace cover, prevent high-temperature gas leakage, and ensure the stability of the pressure detection environment. The initial shape of the heat insulation ring 31 and the sealing ring 33 is a ring with a circular cross section, and the deformation of the heat insulation ring 31 and the sealing ring 33 greatly improves the blocking effect.

[0042] The above examples are only used to illustrate the technical solutions described in the utility model and do not limit the utility model. Although the utility model has been described in detail with reference to the above-described various embodiments, the utility model is not limited to the above-described specific embodiments, and therefore any modification or equivalent replacement of the utility model; and all technical solutions and improvements that do not deviate from the spirit and scope of the invention are all included in the scope of the claims of the utility model.

Claims

1. A pressure detection device for protecting a LF furnace lid, characterized by, Include: Furnace cover body (1); Pressure detector (24); The upper surface of the furnace cover body (1) is fixedly connected with a mounting seat (2), the mounting seat (2) and the inside of the furnace cover body (1) are both provided with a mounting hole (21), the inner surface of the mounting hole (21) is slidably connected with a fixing part for installing the pressure detector (24), the inside of the fixing part is provided with a blocking part, the upper surface of the mounting seat (2) is fixedly connected with two mounting plates (4), and the outer surfaces of the two mounting plates (4) are rotatably connected with a control part.

2. The pressure detection device for protecting a LF furnace lid according to claim 1, characterized in that, The fixing part comprises a sleeve (22), the sleeve (22) is arranged in the mounting hole (21), the inner surface of the sleeve (22) is slidably connected with a protective shell (23), the pressure detector (24) is slidably arranged in the protective shell (23), and the inner surface of the sleeve (22) is slidably connected with a pressing block (25).

3. A pressure detection device for protecting a LF lid according to claim 2, characterized in that, The lower surface of the protective shell (23) is conical.

4. The pressure detection device for protecting the LF furnace cover according to claim 3, characterized in that, The blocking part comprises a heat insulation ring (31) and a sealing ring (33), the heat insulation ring (31) and the sealing ring (33) are both provided with three, the inner surfaces of the mounting hole (21), the sleeve (22) and the protective shell (23) are all provided with heat insulation grooves (3), the inner surfaces of the mounting hole (21), the sleeve (22) and the protective shell (23) are all provided with sealing grooves (32) on one side of the heat insulation grooves (3), and the heat insulation ring (31) and the sealing ring (33) are slidably arranged in the heat insulation grooves (3) and the sealing grooves (32) respectively.

5. The pressure detection device for protecting the LF furnace cover according to claim 2, wherein The control part comprises a rotating shaft (41), both ends of the rotating shaft (41) are rotatably connected with the two mounting plates (4), the outer surface of the rotating shaft (41) is fixedly connected with a gear (42), the upper surface of the pressing block (25) is fixedly connected with a toothed plate (43), and the gear (42) is meshedly connected with the toothed plate (43).

6. A pressure detection device for protecting a LF lid according to claim 5, characterized in that, One end of the rotating shaft (41) penetrates through the mounting plate (4) and is fixedly connected with a worm wheel (44), one side of one of the mounting plates (4) is fixedly connected with two mounting plates (45), the outer surfaces of the two mounting plates (45) are rotatably connected with a worm (46), the worm (46) is meshedly connected with the worm wheel (44), and one end of the worm (46) penetrates through the mounting plate (45) and is fixedly connected with a knob (47).

7. A pressure detection device for protecting a LF lid according to claim 6, characterized in that, The upper surface of the mounting seat (2) is fixedly connected with a limiting frame (48) on both sides of the toothed plate (43), and the outer surface of the toothed plate (43) is fixedly connected with a connecting plate (49) on the front and back sides.

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