Air tightness detection device for furnace tube

Abstract

The utility model relates to the technical field of industrial furnace tubes, in particular to an air tightness detection device for a furnace tube, which comprises a furnace tube body, two sides of the furnace tube body are fixedly connected with clamping pieces, the inner walls of the clamping pieces are clamped with sealing gaskets, and the outer wall of the sealing gasket positioned at the top is provided with vent holes. Helium is filled into the furnace tube through the connecting pipeline, the pressure sensor can effectively monitor the pressure change in the furnace tube in real time, the helium detector is driven by the sliding block to be attached to the furnace tube and move along the track of the S-shaped track, and all-around airtightness detection on the surface and the seam of the furnace tube is facilitated. If the helium is detected to leak from the interior of the furnace tube, the helium detector displays the change of the concentration of the helium, and sends a signal to the indicator light while detecting the helium, and at the moment, the indicator light is turned on or flickers, so that the leakage position can be found out, and the leakage position can be marked or sealed and repaired again; and normal operation of equipment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial furnace tubes, in particular to an air tightness detection device for furnace tubes. Background Art

[0002] Furnace tubes are mainly used to manufacture water-cooled wall tubes, boiling water tubes, superheated steam tubes, superheated steam tubes for locomotive boilers, large and small smoke pipes and arch brick tubes, etc. Industrial furnace tubes are relatively long, generally reaching 5-9 meters. Industrial furnace tubes are generally welded by multiple sections of furnace tubes, and the welded furnace tubes usually need to be tested for air tightness to determine whether the furnace tubes are intact.

[0003] In the existing air tightness test of furnace tubes, operators usually perform visual inspections on the furnace tubes to look for obvious cracks, corrosion or other damage. However, visual inspections mainly rely on the subjectivity of operators and are easily affected by factors such as individual vision, observation angle, and lighting conditions, which can easily lead to missed inspections. Some subtle cracks or internal defects in the furnace tubes cannot be judged by the naked eye, resulting in low detection efficiency and affecting the normal use of the subsequent furnace tubes. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an air tightness detection device for a furnace tube.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A furnace tube air tightness detection device comprises a furnace tube body, wherein both sides of the furnace tube body are fixedly connected with a clamping piece, the inner wall of the clamping piece is clamped with a sealing gasket, and the outer wall of the sealing gasket located at the top is provided with a vent hole;

[0007] A helium tank is provided outside the furnace tube body, one end of the helium tank is connected to a connecting pipe, one end of the connecting pipe is communicated with the interior of the helium tank, and the other end passes through the vent hole and extends to the interior of the furnace tube body, and a vent valve is provided at the end of the connecting pipe close to the helium tank.

[0008] Preferably, an S-shaped track is fixedly connected to the outer wall of the furnace tube body, and the S-shaped track is distributed in an S shape at equal intervals on the outer wall of the furnace tube body. A slider is slidably connected to the S-shaped track, and one side of the slider is fixedly connected to a helium detector through a connecting plate. An indicator light is provided on the outer wall of the helium detector.

[0009] Preferably, the outer wall of the furnace tube body is connected to a pressure sensor and a pressure safety valve via connecting lines.

[0010] Preferably, an arc-shaped groove is provided on the inner wall of the clamping member, and the sealing gasket is embedded in the clamping member through the arc-shaped groove.

[0011] The beneficial effects of the utility model are:

[0012] Helium is filled into the furnace tube using a connecting pipe. The pressure sensor can effectively monitor the pressure changes inside the furnace tube in real time. The slider drives the helium detector to fit the furnace tube and move along the S-shaped track, which is beneficial for comprehensive airtightness testing of the surface and joints of the furnace tube. If helium leakage is detected from the inside of the furnace tube, the helium detector will display the change in helium concentration. When helium is detected, a signal is transmitted to the indicator light, which lights up or flashes to find the leak location. This is beneficial for marking the leak location or re-sealing and repairing it, protecting the normal operation of the equipment and improving the detection efficiency of the furnace tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of an air tightness detection device for a furnace tube proposed in the present invention;

[0014] Figure 2 This is a schematic diagram of the connection structure between the helium tank and the sealing gasket of the air tightness detection device for the furnace tube proposed by the present invention;

[0015] Figure 3 The present invention is a schematic diagram of the structure of a clamping component of an air tightness detection device for a furnace tube.

[0016] In the picture:

[0017] 1. Furnace tube body; 2. Connector; 3. Sealing gasket; 4. Vent hole; 5. Helium tank; 6. Connecting pipe; 7. Vent valve; 8. S-shaped track; 9. Slider; 10. Helium detector; 11. Indicator light; 12. Connecting wire; 13. Pressure sensor; 14. Pressure safety valve; 15. Arc slot. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0020] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0021] Example:

[0022] Reference Figure 1-3 A device for detecting air tightness of a furnace tube comprises a furnace tube body 1, with clamping members 2 fixedly connected to both sides of the furnace tube body 1, a sealing gasket 3 clamped to the inner wall of the clamping member 2, and a vent hole 4 formed on the outer wall of the sealing gasket 3 located at the top;

[0023] A helium tank 5 is provided outside the furnace tube body 1, and one end of the helium tank 5 is connected to a connecting pipe 6. One end of the connecting pipe 6 is communicated with the interior of the helium tank 5, and the other end passes through the vent hole 4 and extends to the interior of the furnace tube body 1. A vent valve 7 is provided at the end of the connecting pipe 6 close to the helium tank 5.

[0024] An S-shaped track 8 is fixedly connected to the outer wall of the furnace tube body 1. The S-shaped track 8 is distributed in an S shape at equal intervals on the outer wall of the furnace tube body 1. A slider 9 is slidably connected to the S-shaped track 8. One side of the slider 9 is fixedly connected to a helium detector 10 through a connecting plate. An indicator light 11 is provided on the outer wall of the helium detector 10.

[0025] The outer wall of the furnace tube body 1 is connected to a pressure sensor 13 and a pressure safety valve 14 via connecting lines 12 .

[0026] An arc-shaped slot 15 is formed on the inner wall of the clamping member 2 , and the sealing gasket 3 is embedded in the clamping member 2 through the arc-shaped slot 15 .

[0027] In this embodiment, when the furnace tube body 1 is tested for air tightness, first, the two sealing gaskets 3 are respectively inserted into the arc-shaped card grooves 15 on the clamping parts 2 at both ends of the furnace tube body 1 to seal the interior of the furnace tube body 1, and one end of the connecting pipe 6 is extended into the interior of the furnace tube body 1 through the vent hole 4. Then, the vent valve 7 is opened to allow the helium in the helium tank 5 to be filled into the furnace tube body 1 through the connecting pipe 6. At this time, the pressure sensor 13 is used to monitor the pressure change inside the furnace tube body 1 in real time to ensure that the pressure inside the furnace tube body 1 is within a safe range. After the pressure of the gas in the furnace tube body 1 is stabilized, the helium detector 10 is used outside the furnace tube body 1. At the same time, the slider 9 is moved so that the slider 9 drives the helium detector 10 to fit the outer wall of the furnace tube body 1 and move along the track of the S-shaped track 8, so that the outer wall surface and the joints of the furnace tube body 1 can be detected. If helium is detected to be leaking from the inside of the furnace tube body 1, the helium detector 10 will display the change in helium concentration. When helium is detected, a signal will be sent, and then the signal will be transmitted to the indicator light 11. At this time, the indicator light 11 will light up or flash, prompting the operator that there is a surface leak here and the airtightness is poor, so that the operator can mark the leaking location or reseal and repair it, thereby effectively determining the sealing of the furnace tube body 1 and protecting the normal operation of the equipment.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for detecting the air tightness of a furnace tube, comprising a furnace tube body (1), characterized in that: Both sides of the furnace tube body (1) are fixedly connected with a clamping piece (2), the inner wall of the clamping piece (2) is clamped with a sealing gasket (3), and the outer wall of the sealing gasket (3) located at the top is provided with a vent hole (4); A helium tank (5) is provided outside the furnace tube body (1), one end of the helium tank (5) is connected to a connecting pipe (6), one end of the connecting pipe (6) is communicated with the interior of the helium tank (5), and the other end passes through the vent hole (4) and extends to the interior of the furnace tube body (1), and a vent valve (7) is provided at one end of the connecting pipe (6) close to the helium tank (5).

2. The air tightness detection device for a furnace tube according to claim 1, characterized in that: An S-shaped track (8) is fixedly connected to the outer wall of the furnace tube body (1), and the S-shaped track (8) is distributed in an S-shape at equal intervals on the outer wall of the furnace tube body (1). A slider (9) is slidably connected to the S-shaped track (8), and a helium detector (10) is fixedly connected to one side of the slider (9) via a connecting plate. An indicator light (11) is provided on the outer wall of the helium detector (10).

3. The air tightness detection device for a furnace tube according to claim 1, characterized in that: The outer wall of the furnace tube body (1) is respectively connected to a pressure sensor (13) and a pressure safety valve (14) via connecting lines (12).

4. The air tightness detection device for a furnace tube according to claim 1, characterized in that: An arc-shaped slot (15) is provided on the inner wall of the clamping member (2), and the sealing gasket (3) is clamped and embedded in the clamping member (2) through the arc-shaped slot (15).

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