Temperature measuring and sampling hole device for water-cooled furnace cover

Abstract

The utility model provides a temperature measuring and sampling hole device for a water-cooled furnace cover. The temperature measuring and sampling hole device comprises a temperature measuring and sampling hole body, a fixed plate, a bottom plate, a supporting seat, a movable door and an air cylinder, the temperature measurement sampling hole body is of a right trapezoid box structure, and the right-angle waist end face and the inclined waist end face are not closed through a steel plate. The box body structure penetrates through and is welded and fixed in a mounting hole in the center of the fixed plate; the bottom plate is fixedly mounted below the fixing plate, and the supporting seat is arranged at one end of the bottom plate; the movable door is arranged above the inclined waist end face of the box body structure in an openable and closable mode. One end of the movable door is rotationally installed on a supporting column arranged on the fixing plate through a rotating shaft. A cylinder mounting seat is arranged on the movable door; the fixed end of the air cylinder is fixedly installed on the top of the supporting base, and the movable end of the air cylinder is rotationally installed on the air cylinder installation base through a pin shaft. According to the technical scheme, the problems that water leakage and steel flower splashing are prone to occurring in the temperature measurement sampling hole of the water-cooled furnace cover of an existing refining furnace are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking metallurgy, and particularly relates to a water-cooled furnace cover temperature measuring and sampling hole device. Background Art

[0002] The water-cooled furnace cover of the refining furnace is directly covered above the ladle. By adding auxiliary materials and using electrode heating for ladle heat preservation, a large amount of high-temperature flue gas generated during the smelting process is collected, achieving the purpose of energy conservation and environmental protection. The water-cooled furnace cover adopts a water-cooling structure with densely arranged medium and low-pressure boiler steel pipes. Alloy feeding holes, wire feeding holes, temperature measuring and sampling holes, and slag breaking holes are respectively arranged in the middle layer of the furnace cover. The temperature measuring and sampling hole body has circulating cooling water installed in the middle of the water-cooled pipes of the furnace cover facing the operation platform to realize steel water temperature measurement and sampling. Under the influence of high-temperature and high-pressure such as the erosion and corrosion of high-temperature flue gas, and the heat radiation released during the production of steel water and electrodes, the temperature measuring and sampling hole body and the welding part between the body and the water-cooled pipe are prone to frequent water leakage failures. Once water leakage occurs, the furnace needs to be stopped to repair the leaking part, which seriously affects normal production and the economic benefits of the enterprise. Usually, abnormal furnace shutdown for 3 - 5 hours is required to handle the water leakage of the temperature measuring and sampling hole, which seriously affects the normal production plan of the LF furnace. If the water leakage of the temperature measuring and sampling hole is not handled in time, the increased water leakage into the high-temperature molten metal (1500 - 1700 °C) in the ladle may cause malignant accidents such as ladle blasting and explosion; at the same time, since the temperature measuring and sampling hole is of an open type, when processing steel water, steel flowers splash out from the sampling hole, easily causing regional fires and personnel burns.

[0003] Currently, there are two types of temperature measuring and sampling hole devices, one with circulating cooling water and the other without circulating cooling water, and the hole doors are both designed in an open form:

[0004] (1) One is a temperature measuring and sampling hole device with a cooling water structure. As Figure 1 shown, the whole body of the temperature measuring and sampling hole body is spliced into a box structure with steel plates and welded and installed with the water-cooled pipes of the furnace cover. It is divided into an inner layer and an outer layer. There are a water inlet pipe 1 and a water outlet pipe 2 for water cooling between the inner layer and the outer layer. In fact, a section of the bottom of the temperature measuring and sampling hole is inserted into the water-cooled furnace cover, and it is impossible to achieve low-in and high-out of the cooling circulating water, so there is partial "stagnant water". Therefore, the bottom of this temperature measuring and sampling hole cannot be effectively cooled. Under the high-temperature and high-pressure environment such as the erosion and corrosion of high-temperature flue gas, and the heat radiation released during the production of steel water and electrodes, the bottom of this temperature measuring and sampling hole will crack and leak after being used for about half a year. The temperature measuring and sampling hole body is of an open type, and steel flowers splash out from the sampling hole;

[0005] (2) The other is a temperature measuring and sampling hole device without a cooling water structure. As Figure 2As shown in the figure, the whole body of the temperature-measuring and sampling hole body is spliced into a box structure by a single-layer steel plate with a thickness of 30 mm and welded and installed with the water-cooling pipe of the furnace cover. In such a high-temperature and high-pressure environment where there is erosion and corrosion by high-temperature flue gas, and heat radiation released during the production process of molten steel and electrodes, the temperature of the steel plate of the temperature-measuring and sampling hole body changes alternately. The alternating expansion or contraction of the steel plate generates alternating stress. Under the action of this alternating stress, the water-cooling pipe fixedly welded to the temperature-measuring and sampling hole is cracked and leaks water by the temperature-measuring and sampling hole generating alternating stress. The temperature-measuring and sampling hole body belongs to an open type, and steel flowers splash out from the sampling hole. Summary of the Utility Model

[0006] According to the above-mentioned technical problems that the temperature-measuring and sampling holes of the existing water-cooled furnace cover of the refining furnace are prone to water leakage and steel flower splashing, a water-cooled furnace cover temperature-measuring and sampling hole device that does not leak water, has a long service life, and can prevent steel flower splashing is provided.

[0007] The technical means adopted by the present utility model are as follows:

[0008] A water-cooled furnace cover temperature-measuring and sampling hole device, comprising a temperature-measuring and sampling hole body, a fixing plate, a bottom plate, a support seat, a movable door and a cylinder;

[0009] The temperature-measuring and sampling hole body is a right-angled trapezoid box structure, the box structure is spliced by steel plates, and the right-angled waist end face and the oblique waist end face are not closed by steel plates; the box structure passes through and is fixedly welded to the installation hole in the center of the fixing plate, and the box structure is inclined, and the oblique waist end face is horizontal;

[0010] The bottom plate is fixedly installed below the fixing plate, and a support seat is arranged at one end; the bottom plate is provided with a through hole matching the box structure, the box structure passes through the through hole, and the oblique waist end face and the right-angled waist end face of the box structure are respectively located on the upper and lower sides of the fixing plate and the bottom plate;

[0011] The movable door is movably arranged above the oblique waist end face of the box structure; one end of the movable door is rotatably installed on a support column arranged on the fixing plate through a rotating shaft;

[0012] A cylinder mounting seat is arranged on the movable door; the fixed end of the cylinder is fixedly installed on the top of the support seat, and the movable end is rotatably installed on the cylinder mounting seat through a pin shaft; the cylinder can drive the movable door to flip through the linear motion of the movable end, so as to control the opening or closing of the oblique waist end face of the box structure.

[0013] Furthermore, a number of positioning pins are fixedly installed on the bottom plate, and chamfer holes capable of inserting chamfer wedges are formed in the positioning pins; a number of positioning holes corresponding to the positioning pins one by one are formed in the fixing plate; each of the positioning pins on the bottom plate is installed in a corresponding positioning hole, and the fixing plate and the bottom plate are fixedly connected by inserting a chamfer wedge into the chamfer hole of each positioning pin.

[0014] Furthermore, the splicing parts between the steel plates of the box structure are all full-welded.

[0015] Furthermore, the box structure is inclined 51° relative to the vertical direction.

[0016] Furthermore, a cylinder protective cover is sleeved outside the cylinder.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The water-cooled furnace cover temperature measuring and sampling hole device provided by the utility model has no problem of its own water leakage, ensures the stable and smooth production of the steelmaking department, and effectively improves the production capacity; the temperature measuring and sampling hole body is fixedly installed on the water-cooled furnace cover through the fixing plate and the bottom plate, and is not fixedly installed by welding with the furnace cover water-cooling pipe, which can avoid the problem of water leakage caused by the water-cooling pipe being cracked by the welded temperature measuring and sampling hole, and at the same time is provided with an openable and closable movable door, which can close the temperature measuring and sampling hole according to needs, thereby preventing the splashing of steel flowers.

[0019] Based on the above reasons, the utility model can be widely promoted in the field of refining furnaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a temperature measuring and sampling hole device with a cooling water structure in the prior art.

[0022] Figure 2 It is a schematic structural diagram of a temperature measuring and sampling hole device without a cooling water structure in the prior art.

[0023] Figure 3 It is a schematic structural diagram of the water-cooled furnace cover temperature measuring and sampling hole device of the present invention.

[0024] In the figure: 1, water inlet pipe; 2, water outlet pipe; 3, box structure; 4, fixed plate; 5, positioning hole; 6, bottom plate; 7, positioning pin; 8, wedge; 9, support seat; 10, movable door; 11, cylinder; 12, support column; 13, cylinder mounting seat. Detailed implementation mode

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way constitutes a limitation to the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that the terms used here are only for describing the specific implementation mode and are not intended to limit the exemplary embodiments of the present invention. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0028] Unless otherwise specifically stated, the relative arrangements of the components and steps set forth in these embodiments, numerical expressions and values do not limit the scope of the present invention. At the same time, it should be clear that, for the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model: the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0030] For the convenience of description, spatial relative terms can be used here, such as "above...", "over...", "on the upper surface of...", "upper...", etc., to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0031] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0032] Embodiment 1

[0033] As Figure 3 shown, the present utility model provides a water-cooled furnace cover temperature measurement and sampling hole device, including a temperature measurement and sampling hole body, a fixing plate 4, a bottom plate 6, a support seat 9, a movable door 10 and a cylinder 11;

[0034] The temperature measurement and sampling hole body has no water-cooled structure; the temperature measurement and sampling hole body is a right-angled trapezoidal box structure 3, which is spliced by steel plates with a thickness of 50 mm, and the right-angled waist end face and the inclined waist end face are not closed by steel plates; the box structure 3 passes through and is welded and fixed to the installation hole in the center of the fixing plate 4, and the box structure 3 is inclined, and the inclined waist end face is horizontal;

[0035] The bottom plate 6 is fixedly installed below the fixed plate 4, and a support seat 9 is provided at one end; the bottom plate 6 is provided with a through hole matching the box structure 3, the box structure 3 passes through the through hole, and the inclined waist end face and the right-angle waist end face of the box structure 3 are respectively located on the upper and lower sides of the fixed plate 4 and the bottom plate 6;

[0036] The movable door 10 is openably and closably arranged above the inclined waist end face of the box structure 3; one end of the movable door 10 is rotatably installed on a support column 12 provided on the fixed plate 4 through a rotating shaft;

[0037] A cylinder mounting seat 13 is provided on the movable door 10; the fixed end of the cylinder 11 is fixedly installed on the top of the support seat 9, and the movable end is rotatably installed on the cylinder mounting seat 13 through a pin shaft; the cylinder 11 can drive the movable door 10 to flip through the linear motion of the movable end, so as to control the opening or closing of the inclined waist end face of the box structure 3.

[0038] Further, a plurality of positioning pins 7 are fixedly installed on the bottom plate 6, and a wedge hole capable of inserting a wedge 8 is formed in the positioning pin 7; a plurality of positioning holes 5 corresponding to the positioning pins 7 one by one are formed in the fixed plate 4; each positioning pin 7 on the bottom plate 6 is installed in the corresponding positioning hole 5, and the fixed plate 4 and the bottom plate 6 are fixedly connected by inserting a wedge 8 into the wedge hole of each positioning pin 7; connecting the fixed plate 4 and the bottom plate 6 through the cooperation of the positioning pin 7 and the wedge 8 can facilitate disassembly and assembly.

[0039] Further, the splicing parts between the steel plates of the box structure 3 are all full-welded.

[0040] Further, the box structure 3 is inclined 51° relative to the vertical direction.

[0041] Further, a cylinder protective cover is sleeved outside the cylinder 11.

[0042] The water-cooled furnace cover temperature measurement and sampling hole device of the present utility model has no cooling water structure, and there is no problem of cracking, open welding and water leakage at the bottom of the "dead water" part of the cooling circulating water; the water-cooled furnace cover temperature measurement and sampling hole device does not have its own water leakage problem, ensuring the stable and smooth production of the steelmaking department and effectively improving the production capacity; the temperature measurement and sampling hole body is fixedly installed on the water-cooled furnace cover through the fixed plate and the bottom plate, and is not fixedly installed by welding with the furnace cover water-cooled pipe, which can avoid the problem of water leakage caused by the temperature measurement and sampling hole where the water-cooled pipes are welded together. At the same time, a movable door that can be opened and closed is provided, which can close the temperature measurement and sampling hole as needed, thereby preventing the splashing of molten steel; the water-cooled furnace cover temperature measurement and sampling hole device described in this application eliminates the water leakage risk and key safety hazards of the temperature measurement and sampling hole, and avoids the explosion accident in the molten steel ladle caused by the water leakage of the temperature measurement and sampling port.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temperature measuring and sampling hole device for a water-cooled furnace cover, characterized in that, It includes a temperature measurement and sampling hole body, a fixing plate, a bottom plate, a support seat, a movable door and a cylinder; The temperature measurement and sampling hole body is a right trapezoidal box structure, which is formed by splicing steel plates, and the right-angled waist end face and the inclined waist end face are not closed by steel plates; the box structure passes through and is welded and fixed to the mounting hole in the center of the fixing plate, and the box structure is inclined, and the inclined waist end face is horizontal; The bottom plate is fixedly installed below the fixing plate, and the support seat is arranged at one end; the bottom plate is provided with a through hole matching the box structure, and the box structure passes through the through hole, and the inclined waist end face and the right-angled waist end face of the box structure are respectively located on the upper and lower sides of the fixing plate and the bottom plate; The movable door is arranged above the inclined waist end face of the box structure in an openable and closable manner; one end of the movable door is rotatably installed on a support column arranged on the fixing plate through a rotating shaft; A cylinder mounting seat is arranged on the movable door; the fixed end of the cylinder is fixedly installed on the top of the support seat, and the movable end is rotatably installed on the cylinder mounting seat through a pin shaft; the cylinder can drive the movable door to flip through the linear motion of the movable end, so as to control the opening or closing of the inclined waist end face of the box structure.

2. The temperature measuring and sampling hole device of the water-cooled furnace cover according to claim 1, wherein A plurality of positioning pins are fixedly installed on the bottom plate, and inclined iron holes capable of inserting inclined irons are opened on the positioning pins; a plurality of positioning holes corresponding to the positioning pins one by one are opened on the fixing plate; each positioning pin on the bottom plate is installed in the corresponding positioning hole, and the fixing plate and the bottom plate are fixedly connected by inserting an inclined iron into the inclined iron hole of each positioning pin.

3. The temperature measurement and sampling hole device for the water-cooled furnace cover according to claim 1, wherein The splicing parts between the steel plates of the box structure are all full-welded.

4. The temperature measuring and sampling hole device for the water-cooled furnace cover according to claim 1, characterized in that The box structure is inclined 51° relative to the vertical direction.

5. The temperature measuring and sampling hole device for the water-cooled furnace cover according to claim 1, characterized in that, A cylinder protective cover is sleeved outside the cylinder.

Images