Radiant tube connection structure

Abstract

The utility model belongs to heat exchange device technical field, specifically provides a kind of radiation pipe connecting structure, including radiation pipe, mounting plate and cover plate;The mounting plate bottom is equipped with sleeve;The sleeve bottom is bent inwards and forms the supporting plate;The pipe orifice outer wall of radiation pipe is equipped with boss;The pipe orifice end of radiation pipe is inserted in sleeve;The through hole that is communicated with sleeve is opened in the mounting plate;The cover plate is detachably installed at the through hole, and the boss is crimped on the supporting plate;The through hole that is communicated to the radiation pipe in the cover plate is opened.This radiation pipe connecting structure provided by the utility model adopts cover plate and bottom sleeve supporting plate to carry out double-end sealing fixation, and it is simple and compact in structure, easy to install, good in sealing, reliable in performance, and convenient to maintain, can be used for vertically installed gas ceramic radiation pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange devices, specifically relating to a radiant tube connection structure. Background Technology

[0002] Gas-fired ceramic radiant tubes are mostly used in box-type multi-purpose furnace heating systems, vertically suspended between the rear chamber furnace lining and the air guide muffle. The radiant tube assembly consists of a self-preheating burner, a silicon carbide radiant tube, a high-temperature resistant ignition tube, and an expansion joint. Under normal circumstances, the lifespan of gas-fired ceramic radiant tubes is 2-3 times longer than that of metal electric heating radiant tubes. Currently, most ceramic radiant tubes use screw-type clamping structures to directly apply force to the radiant tube from below the mounting plate or the side of the tube to achieve connection and fixation. This requires high installation precision, is inconvenient to install, and results in poor sealing. During use, unstable furnace pressure and furnace gas leakage may occur. Furthermore, the direct compression of the ceramic radiant tube by the screw during the clamping process greatly increases the possibility of damage. Utility Model Content

[0003] The purpose of this invention is to overcome the problems of complex installation, poor sealing, and easy damage to ceramic radiation tubes in the existing technology of radiation tube connection structure.

[0004] To address this, the present invention provides a radiant tube connection structure, comprising a radiant tube, a mounting plate, and a cover plate; the mounting plate has a sleeve at its bottom; the bottom of the sleeve is bent inward to form a support plate; the outer wall of the radiant tube opening has a boss; the opening end of the radiant tube is inserted into the sleeve; the mounting plate has a through hole communicating with the sleeve; the cover plate is detachably installed at the through hole and presses the boss onto the support plate; the cover plate has a connecting port communicating with the inside of the radiant tube.

[0005] Specifically, a sealing gasket is provided at the connection between the aforementioned tray and the radiant tube.

[0006] Specifically, the aforementioned sealing gasket includes a first sealing gasket and a second sealing gasket; the first sealing gasket is disposed on the top surface of the tray; and the second sealing gasket is disposed on the connection surface between the tray and the outer wall of the radiant tube.

[0007] Specifically, the aforementioned sealing gasket is a graphite sealing gasket.

[0008] Specifically, a sealing ring is provided between the cover plate and the end face of the radiant tube.

[0009] Specifically, the aforementioned sealing ring is a ceramic fiber packing sealing ring.

[0010] Specifically, a heat insulation sleeve is provided between the outer wall of the aforementioned boss and the inner wall of the sleeve.

[0011] Specifically, the cover plate includes a cover plate body and a pressing part disposed at the bottom of the cover plate body; the mounting plate has a mounting groove; the through hole is disposed at the bottom of the mounting groove; the cover plate body is detachably installed in the mounting groove by means of a connector, and the pressing part is inserted into the through hole.

[0012] Specifically, the aforementioned connector includes screws; the bottom of the mounting groove is provided with a first mounting hole; the cover plate body is provided with a second mounting hole; the screws detachably install the cover plate body into the mounting groove through the first mounting hole and the second mounting hole.

[0013] Specifically, the mounting plate is provided with a third mounting hole for connection with an external structure.

[0014] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0015] The radiant tube connection structure provided by this utility model uses a cover plate and a bottom sleeve support plate for double-end sealing and fixing. The structure is simple and compact, easy to install, has good sealing performance, reliable performance, and is easy to maintain. It can be used for vertically installed gas ceramic radiant tubes.

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the radiant tube connection structure provided by this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 101. Third mounting hole; 2. Sleeve; 3. Support plate; 4. Radial tube; 401. Boss; 5. Cover plate; 501. Connecting port; 6. Screw; 7. Sealing ring; 8. Heat insulation sleeve; 9. First sealing gasket; 10. Second sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] Reference Figure 1 This utility model provides a radiant tube connection structure, including a radiant tube 4, a mounting plate 1, and a cover plate 5; the mounting plate 1 has a sleeve 2 at its bottom; the bottom of the sleeve 2 is bent inward to form a support plate 3; the outer wall of the radiant tube 4 has a boss 401; the end of the radiant tube 4 is inserted into the sleeve 2; the mounting plate 1 has a through hole communicating with the sleeve 2; the cover plate 5 is detachably installed at the through hole and presses the boss 401 onto the support plate 3; the cover plate 5 has a connecting port 501 communicating with the inside of the radiant tube 4. During assembly, the radiant tube 4 is first inserted into the sleeve 2 from above the mounting plate 1, so that the end of the radiant tube 4 is located inside the sleeve 2, and the support plate 3 at the bottom of the sleeve supports the boss 401. Then, the cover plate 5 is fixed onto the mounting plate 1, so that the bottom surface of the cover plate 5 contacts the end face of the radiant tube 4, and the boss 401 is pressed between the cover plate 5 and the support plate 3 to achieve the connection and fixation of the radiant tube 4. At the same time, the upper cover plate 5 and the bottom sleeve 2 support plate 3 provide double-end sealing and fixation at the connection of the radiant tube 4. The height, width and other dimensions of the boss 401 match the inner diameter of the sleeve 2, and the dimensions of the support plate 3 match the diameter of the radiant tube 4. The inner wall of the sleeve 2 and the support plate 3 limit the radiant tube 4 to ensure that the end of the radiant tube 4 will not wobble from side to side after being fixed between the cover plate 5 and the support plate 3. The boss 401 is preferably an annular boss 401 arranged around the outer wall of the radiant tube 4 opening, and the support plate 3 is preferably an annular support plate 3 arranged around the inner circle of the sleeve 2.

[0023] To improve the sealing performance of the connection structure, a sealing gasket is provided at the connection between the support plate 3 and the radiant tube 4 to prevent air leakage at the bottom of the sleeve 2. The sealing gasket is preferably a high-temperature resistant graphite gasket.

[0024] Specifically, such as Figure 1As shown, the sealing gasket includes a first sealing gasket 9 and a second sealing gasket 10; the first sealing gasket 9 is disposed on the top surface of the support plate 3; the second sealing gasket 10 is disposed on the connection surface between the support plate 3 and the outer wall of the radiant tube 4. By providing sealing gaskets in two areas, the connection between the sleeve 2 and the radiant tube 4 is sealed in all directions.

[0025] Furthermore, a sealing ring 7 is provided between the cover plate 5 and the end face of the radiant tube 4 to enhance the end seal.

[0026] The sealing ring 7 is preferably a ceramic fiber packing sealing ring 7 with certain elasticity and high temperature resistance. Through the squeezing action of the cover plate 5, the sealing ring 7 is deformed due to squeezing, thereby sealing the connection between the end of the radiant tube 4 and the bottom of the cover plate 5.

[0027] In a more detailed embodiment, a heat insulation sleeve 8 is provided between the outer wall of the boss 401 and the inner wall of the sleeve 2. The heat insulation sleeve 8 is preferably a ceramic fiber strip, which isolates the heat from the radiant tube 4.

[0028] In a preferred embodiment, the cover plate 5 includes a cover plate 5 body and a pressing part disposed at the bottom of the cover plate 5 body. The size of the pressing part is smaller than that of the cover plate 5 body, forming a stepped structure. The mounting plate 1 has a mounting groove. The through hole is disposed at the bottom of the mounting groove. The cover plate 5 body is detachably mounted in the mounting groove via a connector, and the pressing part is inserted into the through hole. The dimensions of the mounting groove and the through hole match the dimensions of the cover plate 5 body and the pressing part, respectively, and the mounting groove and the through hole provide radial positioning of the cover plate 5. The connecting port 501 penetrates the cover plate 5 body and the pressing part, connecting to the interior of the radiant tube 4. Its size matches the opening size of the radiant tube 4, ensuring that it does not affect the operation of the radiant tube 4.

[0029] Furthermore, the connector includes screws 6; a first mounting hole is provided at the bottom of the mounting groove; a second mounting hole is provided on the cover plate 5 body; the screws 6 detachably install the cover plate 5 body into the mounting groove through the first mounting hole and the second mounting hole. During assembly of the connecting structure, the screws 6 act on the cover plate 5 and the mounting plate 1, ensuring uniform force on the radiant tube 4 and preventing direct compression that could damage the radiant tube 4. The number of the first mounting hole, the second mounting hole, and the screws 6 are designed as needed to ensure the cover plate 5 is sealed and fixed.

[0030] In one embodiment, the mounting plate 1 is provided with a third mounting hole 101 for connection with an external structure. The radiant tube connection structure is installed to the required location through the third mounting hole 101.

[0031] Example 1:

[0032] This embodiment provides a radiant tube connection structure, including a radiant tube 4, a mounting plate 1, a cover plate 5, and screws 6;

[0033] The bottom of the mounting plate 1 is provided with a sleeve 2; the bottom of the sleeve 2 is bent inward to form a support plate 3; the mounting plate 1 is provided with a mounting groove; the bottom of the mounting groove is provided with a first mounting hole and a through hole communicating with the sleeve 2;

[0034] The outer wall of the radiant tube 4 is provided with a boss 401; the end of the radiant tube 4 is inserted into the sleeve 2.

[0035] The cover plate 5 includes a cover plate 5 body and a pressing part disposed at the bottom of the cover plate 5 body. The size of the pressing part is smaller than that of the cover plate 5 body, and the two form a stepped structure. The cover plate 5 body is provided with a second mounting hole. The screw 6 detachably installs the cover plate 5 body into the mounting groove through the first mounting hole and the second mounting hole, and the pressing part is inserted into the through hole to press the boss 401 of the radiant tube 4 between the support plate 3 and the pressing part. The cover plate 5 is provided with a connecting port 501 that connects to the radiant tube 4.

[0036] The top surface of the support plate 3 is provided with a first sealing gasket 9; the connection surface between the support plate 3 and the outer wall of the radiant tube 4 is provided with a second sealing gasket 10; a sealing ring 7 is provided between the cover plate 5 and the end face of the radiant tube 4; and a heat insulation sleeve 8 is provided between the outer wall of the boss 401 and the inner wall of the sleeve 2.

[0037] During assembly, first insert the radiant tube 4 into the sleeve 2 from above the mounting plate 1, with the tube end of the radiant tube 4 positioned inside the sleeve 2. The support plate 3 at the bottom of the sleeve supports the boss 401. Then, fix the cover plate 5 onto the mounting plate 1, ensuring the bottom surface of the pressing part contacts the end face of the radiant tube 4, pressing the boss 401 between the cover plate 5 and the support plate 3, thus connecting and fixing the radiant tube 4. Simultaneously, the connection of the radiant tube 4 is double-sealed using the upper sealing ring 7 and the sealing gasket at the bottom support plate 3.

[0038] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A radiant tube connection structure, characterized in that: The device includes a radiant tube (4), a mounting plate (1), and a cover plate (5); the mounting plate (1) has a sleeve (2) at its bottom; the bottom of the sleeve (2) is bent inward to form a support plate (3); the outer wall of the radiant tube (4) has a boss (401); the end of the radiant tube (4) is inserted into the sleeve (2); the mounting plate (1) has a through hole communicating with the sleeve (2); the cover plate (5) is detachably installed at the through hole and presses the boss (401) onto the support plate (3); the cover plate (5) has a connecting port (501) communicating with the radiant tube (4).

2. The radiant tube connection structure as described in claim 1, characterized in that: A sealing gasket is provided at the connection between the tray (3) and the radiant tube (4).

3. The radiant tube connection structure as described in claim 2, characterized in that: The sealing gasket includes a first sealing gasket (9) and a second sealing gasket (10); the first sealing gasket (9) is disposed on the top surface of the tray (3); the second sealing gasket (10) is disposed on the connection surface between the tray (3) and the outer wall of the radiant tube (4).

4. The radiant tube connection structure as described in claim 3, characterized in that: The sealing gasket is a graphite sealing gasket.

5. The radiant tube connection structure as described in claim 1, characterized in that: A sealing ring (7) is provided between the cover plate (5) and the opening end of the radiant tube (4).

6. The radiant tube connection structure as described in claim 5, characterized in that: The sealing ring (7) is a ceramic fiber packing sealing ring (7).

7. The radiant tube connection structure as described in claim 1, characterized in that: A heat insulation sleeve (8) is provided between the outer wall of the boss (401) and the inner wall of the sleeve (2).

8. The radiant tube connection structure as described in claim 1, characterized in that: The cover plate (5) includes a cover plate (5) body and a pressing part disposed at the bottom of the cover plate (5) body; the mounting plate (1) is provided with a mounting groove; the through hole is disposed at the bottom of the mounting groove; the cover plate (5) body is detachably installed in the mounting groove by means of a connector, and the pressing part is inserted into the through hole.

9. The radiant tube connection structure as described in claim 8, characterized in that; The connector includes a screw (6); the bottom of the mounting groove is provided with a first mounting hole; the cover plate (5) body is provided with a second mounting hole; the screw (6) detachably installs the cover plate (5) body into the mounting groove through the first mounting hole and the second mounting hole.

10. The radiant tube connection structure as described in claim 1, characterized in that: The mounting plate (1) is provided with a third mounting hole (101) for connecting to an external structure.

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