Positioning device for flange short pipe

Abstract

The utility model provides a positioning device of a flange short pipe. The flange short pipe comprises a pipe (102) and a first flange plate (101) fixedly connected with one end face of the pipe (102). The device comprises a camera (205), an adapter (204), a supporting plate (203), a connecting rod (202) and a second flange plate (201) which are connected in sequence, the second flange plate (201) is in flange connection with the first flange plate (101); the second flange plate (201) and the supporting plate (203) enable the central axis of the device to basically coincide with the axis of the pipe (102); and one end of the cable (3) is connected with the camera (205). The method has the advantages that the function of furnace observation equipment is fully utilized, angle positioning during flange short pipe welding is achieved, other angle measuring tools are not needed, operation is easy, positioning is accurate, and the construction speed is high.

Description

Technical Field

[0001] The present application belongs to the field of optical instruments and positioning construction, and specifically relates to a positioning device for a flange short pipe. Background Art

[0002] Closed industrial furnaces, such as blast furnaces, have high temperatures, high pressures, and high dust levels within them, making observation through observation windows difficult. To address this, various detection devices have been proposed to obtain information about the furnace interior, such as infrared cameras and microwave scanners. Some of these detection devices are located outside the furnace shell, transmitting and / or receiving detection signals through observation windows. However, dust accumulation on these windows can hinder detection. Consequently, the concept of placing detection elements, such as cameras and other sensors, within the furnace has been proposed.

[0003] CN1156149C discloses an insertable furnace camera, comprising a camera gun, a tubular cooler, a sealing valve, and a sealing sleeve. A camera and a temperature measuring element are mounted at the front end of the camera gun. The camera gun passes through the sealing sleeve and the sealing valve until it reaches the front end of the tubular cooler, thereby positioning the camera and temperature measuring element at the front end of the camera gun within the blast furnace. Because the camera gun is sealed by both the sealing sleeve and the sealing valve, during blast furnace production, the camera gun can be pulled out between the sealing valve and the sealing sleeve, the sealing valve closed, and then the camera gun can be pulled out of the sealing sleeve for inspection and maintenance. It is important to note that this camera gun has no moving parts.

[0004] CN201540038U and CN206402324U improve the camera of CN1156149C, wherein a scraper or scraper is provided in front of the camera window and dust is avoided by the reciprocating motion of the scraper or scraper.

[0005] When installing an existing plug-in furnace camera on a furnace, it is necessary to first weld a flange short tube on the furnace observation hole, and then fix the monitoring equipment in the flange short tube and extend it into the furnace for monitoring. After the flange short tube is welded, its angle with the furnace can no longer be changed, and the monitoring direction of the monitoring equipment in the furnace is also determined. If the welding angle of the flange short tube deviates, the angle of the camera installation will also deviate, which will seriously affect the subsequent monitoring equipment's observation of the interior of the furnace. Therefore, the fixing angle of the flange short tube must be accurate to ensure the accuracy of the monitoring equipment's image field of view. The existing technology usually uses a protractor, a level, etc. to fix the angle of the flange short tube. The accuracy of this measurement method is often not enough, and the construction site where the furnace is located often does not have good measurement conditions, and very precise measuring instruments cannot be used, resulting in the work of welding the flange short tube being very difficult. Utility Model Content

[0006] In order to overcome the defects of the prior art, the present application proposes a positioning device for a flange short pipe, wherein the flange short pipe comprises a pipe and a first flange fixedly connected to one end face of the pipe; the positioning device comprises:

[0007] Camera;

[0008] A cylindrical adapter, the head end of which is detachably connected to the camera; a first wiring hole is formed on the side wall of the adapter;

[0009] The support plate has an outer contour that forms a clearance fit with the inner wall of the tube so as to be able to slide along the tube; the support plate has a second wiring hole;

[0010] Connecting rod; the support plate is fixed to the head end of the connecting rod; the head end of the connecting rod is detachably connected to the tail end of the adapter;

[0011] A second flange is used for flange connection with the first flange; the second flange has an opening in the center; the tail end of the connecting rod passes through the central opening of the second flange; and the second flange has a third wiring hole;

[0012] A cable, one end of which is connected to the camera, and the other end of which passes through the first wiring hole, the second wiring hole and the third wiring hole in sequence.

[0013] As an improvement to the above device, the tail end of the adapter is closed, and the center of the tail end has an opening with an internal thread;

[0014] The head end of the connecting rod has an external thread; the head end of the connecting rod is threadedly connected to the opening of the tail end of the adapter.

[0015] As an improvement to the above-mentioned device, the diameter of the head end of the connecting rod is smaller than the diameter of the middle part; the central part of the support plate has an opening, which allows the head end of the connecting rod to pass through, but does not allow the middle part of the connecting rod to pass through; the end face of the middle part of the connecting rod close to the head end and the end face of the tail end of the adapter clamp the support plate.

[0016] As an improvement to the above device, the plane where the end surface of the support plate is located is perpendicular to the axis of the connecting rod.

[0017] As an improvement to the above device, the support disk is a disk-shaped structure.

[0018] As an improvement to the above device, a support tube extends from the central opening of the second flange toward the tail end; the tail end of the connecting rod passes through the central opening of the second flange and forms a clearance fit with the support tube.

[0019] As an improvement to the above device, the head end of the adapter is threadedly connected to the camera.

[0020] Compared with the prior art, the advantages of this application are:

[0021] No other angle measuring tools are needed to realize the angle positioning during flange short pipe welding, which saves manpower, ensures accurate positioning and fast construction speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Shown is a side view of the flanged stub;

[0023] Figure 2 The figure shows the installation of flange short pipe on the furnace;

[0024] Figure 3 The figure shows the schematic diagram of the positioning device being installed in the flange short pipe;

[0025] Figure 4 Shown is an exploded view of the positioning device;

[0026] Figure 5 Shown is an exploded cross-sectional view of the positioning device;

[0027] Figure 6 Shown is a perspective view of the adapter;

[0028] Figure 7 Shown is a top view of the support plate;

[0029] Figure 8 Shown is a top view of the second flange;

[0030] Figure 9 Shown is a cross-sectional view of the second flange;

[0031] Figure 10 The figure shows the cross-sectional view of the positioning device and flange short pipe for installing Engineering Bao. DETAILED DESCRIPTION

[0032] The technical solution of this application is described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, the flange short pipe 1 welded on the furnace includes a first flange 101 and a pipe 102 fixedly connected to one end face of the first flange 101. For the sake of simplicity of description, the following will be Figure 1 The left end is called the tail end, and the right end is called the head end.

[0034] like Figure 2As shown, the sidewall of the furnace has an opening that penetrates the furnace shell and accommodates pipe 102. During installation, a portion of pipe 102 extends from the opening into the furnace interior, while the first flange 101 is positioned outside the furnace. Once the angle of the flange short pipe 1 is adjusted to the desired position, pipe 102 is welded to the opening. The positioning device provided in this application enables accurate angle adjustment of the flange short pipe 1 before installation.

[0035] like Figure 3 As shown, the positioning device of the flange short pipe is fixedly installed in the flange short pipe 1.

[0036] like Figure 4 and Figure 5 As shown, the positioning device provided by the present application may include a camera 205 for monitoring the environment inside the kiln. When installed, the camera 205 should be inserted into the tube 102, in the same position as the camera installed later.

[0037] The positioning device may further include an adapter 204, which may be a cylindrical structure. The head end of the adapter 204 may be detachably connected to the camera 205, and the connection method may be, for example, a threaded connection or a snap connection. Figure 6 As shown, the side wall of the adapter 204 may have a first wiring hole 2041 passing through the side wall.

[0038] A support plate 203 can slide along the tube 102 in the tube 102. The support plate 203 can be a disc-shaped structure, and its diameter is slightly smaller than the inner diameter of the short tube 102, so that its outer contour forms a clearance fit with the inner wall of the tube 102. Figure 7 As shown, a second wiring hole 2031 penetrating the support plate 203 may be provided near the central opening of the support plate 203 .

[0039] The center of the support plate 203 has an opening that allows the tip of a connecting rod 202 to pass through. The tip of the connecting rod 202 has a slightly smaller diameter than the middle portion, allowing it to pass through the central opening of the support plate 203, but the middle portion cannot. The tip of the connecting rod 202, passing through the central opening of the support plate 203, can be removably connected to the tail of the adapter 204, using methods such as threaded or snap-fit ​​connections. While the middle portion of the connecting rod 202 cannot pass through the opening of the support plate 203, the end surface of the middle portion near the tip and the tail of the adapter 204 can together clamp the support plate 203, ensuring that the plane of the end surface of the support plate 203 is perpendicular to the axis of the connecting rod 202. Because the outer contour of the support plate 203 forms a clearance fit with the inner wall of the tube 102, after installation, the gap between the outer contour of the support plate 203 and the interior of the short tube 102 is minimal, minimizing the radial movement of the positioning device in the tube 102 and maintaining its stability.

[0040] The support plate 203 can be clamped and fixed by the connecting rod 202 and the adapter 204 as described above, or it can be fixed to the end of the connecting rod 202 close to the camera 205 by other methods, such as welding, or integrated with the connecting rod 202.

[0041] The positioning device may further include a second flange 201. The second flange 201 may be flange-connected to the first flange 101. The center of the second flange 201 has an opening, allowing the tail end of the connecting rod 202 to pass through the opening. Figure 9 As shown, a support tube 2012 extends from the central opening of the second flange 201 to the tail end, and the tail end of the connecting rod 202 can pass through the opening to form a clearance fit with the support tube 2012. Figure 8 As shown, the second flange 201 may have a third wiring hole 2011 passing through the second flange 201 .

[0042] The second flange 201 and the support plate 203 serve as two left and right fulcrums to support the positioning device together, ensuring that the central axis of the positioning device and the central axis of the flange short tube 1 are basically located in a straight line, so that the image captured by the camera 205 is basically consistent with the image captured by the furnace monitoring device installed later.

[0043] The support plate 203 and the tube 102 are clearance-fitted with a small gap therebetween. The support plate 203 should be as far away from the second flange 201 as possible to minimize the angular deviation between the central axis of the positioning device and the central axis of the flange short tube 1.

[0044] One end of the camera 205 is connected to the cable 3. The other end of the cable 3 passes through the first wiring hole 2041, the second wiring hole 2031 and the third wiring hole 2011 in sequence, and finally connects to the engineering treasure 4. The cable 3 includes a power line and a signal line.

[0045] Gongchengbao 4 supplies power to the camera 205 via the cable 3 and transmits the images captured by the camera 205 to the display screen of Gongchengbao 4 via the cable 3 .

[0046] During installation, first connect one end of cable 3 to camera 205, pass the other end of cable 3 through the first routing hole 2041 of adapter 204, and then secure the head end of adapter 204 to camera 205. Then, sequentially connect and secure the support plate 203, connecting rod 202, and second flange 201, and pass cable 3 through the second routing hole 2031 and third routing hole 2011. Finally, flange-connect the assembled positioning device to flange stub 1, and connect Engineering Treasure 4 to cable 3. Before welding flange stub 1, camera 205 transmits the captured image to the screen of Engineering Treasure 4. The user can observe the angle of flange stub 1 through the captured image and adjust the angle based on the deviation to ensure a successful weld. If the light inside the furnace is too dim, one or more laser guns can also be used to illuminate a reference point inside the furnace (for example, the corner of the furnace throat steel brick). The reference point can be located in the captured image to determine whether the angle of flange stub 1 is correct.

[0047] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of this application and are not intended to limit the scope of the present invention. Although this application has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be encompassed by the claims of this application.

Claims

1. A positioning device for a flange short pipe, the flange short pipe comprising a pipe (102) and a first flange (101) fixedly connected to one end face of the pipe (102); characterized in that: The positioning device comprises: Camera (205); A cylindrical adapter (204) having a head end detachably connected to the camera (205); a first wiring hole (2041) is formed on a side wall of the adapter (204); The support plate (203) has an outer contour that forms a clearance fit with the inner wall of the tube (102) so as to be able to slide along the tube (102) in the tube (102); the support plate (203) has a second wiring hole (2031); A connecting rod (202); the support plate (203) is fixed to the head end of the connecting rod (202); the head end of the connecting rod (202) and the tail end of the adapter (204) are detachably connected; A second flange (201) is used for flange connection with the first flange (101); the second flange (201) has an opening at its center; the tail end of the connecting rod (202) passes through the central opening of the second flange (201); and the second flange (201) has a third wiring hole (2011); A cable (3) has one end connected to the camera (205) and the other end passing through the first wiring hole (2041), the second wiring hole (2031) and the third wiring hole (2011) in sequence.

2. The positioning device for flange short pipe according to claim 1, characterized in that: The tail end of the adapter (204) is closed, and the center of the tail end has an opening, and the opening has an internal thread; The head end of the connecting rod (202) has an external thread; the head end of the connecting rod (202) is threadedly connected to the opening of the tail end of the adapter (204).

3. The positioning device for flange short pipe according to claim 2, characterized in that: The diameter of the head end of the connecting rod (202) is smaller than the diameter of the middle part; the central part of the support plate (203) has an opening, which allows the head end of the connecting rod (202) to pass through, but does not allow the middle part of the connecting rod (202) to pass through; the end face of the middle part of the connecting rod (202) close to the head end and the end face of the tail end of the adapter (204) clamp the support plate (203).

4. The positioning device for flange short pipe according to claim 3, characterized in that: The plane where the end surface of the support plate (203) lies is perpendicular to the axis of the connecting rod (202).

5. The positioning device for flange short pipe according to claim 1, characterized in that: The support disk (203) is a disk-shaped structure.

6. The positioning device for flange short pipe according to claim 1, characterized in that: A support tube (2012) extends from the central opening of the second flange (201) toward the tail end; and the tail end of the connecting rod (202) passes through the central opening of the second flange (201) to form a clearance fit with the support tube (2012).

7. The positioning device for flange short pipe according to claim 1, characterized in that: The head end of the adapter (204) is threadedly connected to the camera (205).

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