Flue detection sealing device and flange sealing mechanism thereof

Abstract

The utility model relates to the technical field of flue detection, and provides a flue detection sealing device and a flange sealing mechanism thereof. The flue detection sealing device at least comprises a connecting pipe, a flange and an isolation chamber, the connecting pipe is vertically and fixedly arranged on the outer wall of the flue, and the flange is arranged at a port, away from the side of the flue, of the connecting pipe. The flange comprises a flange plate, an installation ring and a closed sealing piece, a center hole is formed in the center of the flange plate, the installation ring is installed on the center hole in a covering mode, and the closed sealing piece is fixed to the position of the center hole through the installation ring. The isolation chamber is an openable space formed on the flue side of the flange and comprises a surrounding wall and a movable cover plate; the enclosure bulkhead surrounds the center point of the center hole, and the movable cover plate is located at the end, opposite to the closed sealing piece, of the enclosure bulkhead and covers a port of the enclosure bulkhead. According to the scheme provided by the invention, the health risk of detection personnel in the detection process can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of flue detection, and in particular to a flue detection sealing device and a flange sealing mechanism thereof. Background Art

[0002] The current waste gas treatment technology, whether in the catering industry or the industrial field, generally filters and purifies the waste gas before discharging it through the flue. In the process of filtering and purifying, multiple functional modules are generally set up in the flue along the direction of waste gas discharge according to the nature of the waste gas, and different substances in the waste gas are purified one by one to ensure that the quality of the gas discharged from the flue outlet can meet the emission standards.

[0003] In order to understand the processing status of each functional module, corresponding detection ports are usually set at the air inlets and outlets of different functional modules. The general detection operation is: open the closed structure of the detection port (such as the sealing plate of the detection port), then extend the detection probe into the flue and detect the exhaust gas data. In order to ensure that the probe passes smoothly, the diameter of the detection port is generally larger than the width of the probe, and the exhaust gas in the flue will flow out of the detection port.

[0004] The current solution is for the inspector to cover the gap between the probe and the inspection port with a cloth during the inspection. However, during the inspection operation, specifically, during the process of opening the inspection port and inserting the inspection probe, and during the process of removing the inspection probe from the inspection port and reclosing the inspection port, a lot of exhaust gas in the flue will still be discharged through the gap, that is, the airtightness of the flue is difficult to ensure during the inspection, thus posing a greater health risk to the inspector. Summary of the invention

[0005] In order to solve the technical problem that the structure of the existing flue detection port is difficult to ensure airtightness during detection, the present application provides a flue detection sealing device and a flange sealing mechanism thereof.

[0006] On the one hand, the smoke duct detection and sealing device provided in the present application at least comprises: a connecting pipe, a flange, and an isolation chamber;

[0007] The connecting pipe is vertically fixed to the outer wall of the flue, and the flange is arranged at the end of the connecting pipe away from the flue side;

[0008] The flange comprises: a flange plate, a mounting ring and a closed sealing sheet, wherein a center hole is provided at the center of the flange plate, the mounting ring is covered and mounted on the center hole, and the closed sealing sheet is fixed at the position of the center hole by the mounting ring;

[0009] The isolation chamber is an openable space formed on the flue side of the flange, which includes: a surrounding wall and a movable cover plate; the surrounding wall is arranged to surround the center point of the center hole, and the movable cover plate is located at the end opposite to the closed sealing plate and covers the port of the surrounding wall.

[0010] In an optional embodiment, a sealing groove is provided on the outer end surface of the flange, and the sealing groove is arranged around the center hole.

[0011] In an optional embodiment, the mounting ring comprises: an outer pressure ring and an inner pressure ring, which are separable;

[0012] The inner pressure ring is installed on the sealing groove, and the closed sealing sheet is located between the inner pressure ring and the outer pressure ring.

[0013] In an optional embodiment, the isolation chamber is located on the flue side of the inner pressure ring, and the surrounding wall is integrally formed with the inner pressure ring.

[0014] In an optional embodiment, the isolation chamber is fixed to the flue side of the flange, and the surrounding wall is integrally formed with the flange.

[0015] In an optional embodiment, the surrounding wall extends into the flue along the extension direction of the connecting pipe, the movable cover plate is located in the flue, and the opening of the movable cover plate is arranged toward the exhaust direction.

[0016] In an optional embodiment, the isolation chamber is placed inside the connecting pipe, and the movable cover is located inside the pipeline of the connecting pipe.

[0017] In an optional embodiment, the movable cover plate and the surrounding wall are connected to each other by an elastic hinge.

[0018] In an optional embodiment, a closed ring is provided at the port of the surrounding wall on the flue side, and corresponding magnetic sheets are provided on the mutually fitting surfaces of the closed ring and the movable cover plate.

[0019] On the other hand, the flue detection flange sealing mechanism provided in the present application is arranged on the flange of the flue detection sealing device provided in the above embodiment, and is installed on the sealing groove of the flange end surface of the flange, and the sealing groove is arranged around the center hole;

[0020] The flue detection flange sealing mechanism comprises: a mounting ring, a closed sealing sheet and an isolation chamber;

[0021] Wherein, the mounting ring comprises: an outer pressure ring and an inner pressure ring, which are detachable, the inner pressure ring is mounted on the sealing groove, and the closed sealing sheet is located between the inner pressure ring and the outer pressure ring;

[0022] The isolation chamber is located on the flue side of the inner pressure ring, and the surrounding wall is integrally formed with the inner pressure ring.

[0023] The flue detection and sealing device and flange sealing mechanism provided by the present application have the following technical effects:

[0024] Based on the structure of the flue detection closure device provided by the present application, in the detection space formed by the connecting pipe and the flange outside the flue, a mounting ring is arranged in the center hole of the flange, and the closed sealing sheet is compacted at the position of the center hole. During the passage of the detection probe, the closed sealing sheet always wraps the outer wall of the detection probe, fills the gap between the detection probe and the flange, and isolates the exhaust gas in the flue; during the process of the detection probe leaving the flange, the degree of cracking between the various sealing sheets of the closed sealing sheet gradually decreases, and the state is converted from the cracked state to the closed state until the detection probe completely leaves the closed sealing sheet, isolating the exhaust gas in the flue. Moreover, at this time, the air pressure of the closed sealing sheet is limited by the volume of the isolation chamber, so that the closed sealing sheet will affect its air tightness due to the air pressure of the connected flue, or, even if the closed sealing sheet is affected by aging and other reasons, the amount of gas entering the detection environment from the flue detection closure device is also limited by the volume of the isolation chamber, thereby solving the problem that the existing detection structure is difficult to control its air tightness, and greatly reducing the health risks of the detection personnel during the detection process.

[0025] Based on the flue detection flange sealing mechanism provided by the embodiment of the present application, the isolation chamber is fixed on the side of the inner pressure ring close to the flue, and the surrounding wall and the inner pressure ring are integrally formed, that is, the surrounding wall and the inner pressure ring form a cylindrical component with at least one end provided with a circular ring. When installing the corresponding flue detection sealing device, the surrounding wall is inserted into the connecting pipe along the connecting pipe through the center hole, and the outer edge of the sealing groove of the inner pressure ring is aligned, so that the installation and fixation between the flue detection flange sealing mechanism and the flange can be completed. The flue detection flange sealing mechanism based on the structure including the surrounding wall and the inner pressure ring integrally formed can modify the detection structure that originally includes the connecting pipe and the flange. That is, the flue detection flange sealing mechanism, by inserting the surrounding wall into the connecting pipe along the connecting pipe through the center hole, aligning the outer edge of the inner pressure ring and the sealing groove, can improve the airtightness of the detection structure during the detection period and the non-detection period, greatly reduce the health risk of the detection personnel, and thus also help to control the modification cost of the existing detection structure.

[0026] Additional aspects and advantages of the present application will be partially given in the following description, which will become obvious from the following description, or will be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A schematic diagram of the structure of a smoke duct detection and sealing device provided in one embodiment of the present application; Figure 2 for Figure 1 A schematic cross-sectional view of a smoke duct detection and sealing device provided by an embodiment in the AA direction;

[0029] Figure 3 for Figure 1 A schematic cross-sectional view of a smoke duct detection and sealing device provided by another embodiment in the AA direction;

[0030] Figure 4 A schematic structural diagram of a smoke duct detection and sealing device provided in another embodiment of the present application;

[0031] Figure 5 for Figure 4 A schematic cross-sectional view of a smoke duct detection and sealing device provided by an embodiment in the BB direction;

[0032] Figure 6 for Figure 4 A schematic cross-sectional view of a smoke duct detection and sealing device provided in another embodiment in the BB direction;

[0033] Figure 7 A schematic diagram of the structure of a flue detection flange sealing mechanism provided by one embodiment of the present application;

[0034] Figure 8 A schematic structural diagram of a flue detection flange sealing mechanism provided in another embodiment of the present application. DETAILED DESCRIPTION

[0035] The present application will be further described below in conjunction with the accompanying drawings and exemplary embodiments, wherein the same reference numerals in the accompanying drawings all refer to the same components. In addition, if the detailed description of the known technology is not necessary for illustrating the features of the present application, it will be omitted.

[0036] refer to Figure 1-4 , Figure 1 A schematic diagram of the structure of a smoke duct detection and sealing device provided in one embodiment of the present application. Figure 2 for Figure 1 A schematic cross-sectional view of a smoke duct detection and sealing device provided by an embodiment in the AA direction, Figure 3 for Figure 1 A schematic cross-sectional view of a smoke duct detection and sealing device provided by another embodiment in the AA direction; Figure 4 This is a schematic diagram of the structure of a smoke duct detection and sealing device provided in another embodiment of the present application. Figure 5 for Figure 4A schematic cross-sectional view of a smoke duct detection and sealing device provided by an embodiment in the BB direction, Figure 6 for Figure 4 A schematic cross-sectional view of a smoke duct detection and sealing device provided in another embodiment in the BB direction.

[0037] The present application provides a smoke duct detection and sealing device 100. The smoke duct detection and sealing device 100 at least comprises: a connecting pipe 101, a flange 110, and an isolation chamber 120.

[0038] For the sake of clarity, in the description provided in the embodiments of the present application, the area of ​​the flue is identified as Y and the flue wall is identified as 200.

[0039] In the embodiment of the present application, the connecting pipe 101 is vertically and fixedly arranged on the flue wall 200, and a flange 110 is arranged at the end of the connecting pipe 101 away from the flue side. The connecting pipe 101 and the flange 110 are arranged outside the flue to form a detection space open to the outside. The connecting pipe 101 can be pre-integrated with the flue wall 200, such as Figure 1-6 As shown, the fixed installation can also be carried out by fixing components such as fixing screws and screws.

[0040] exist Figure 1-3 In the provided embodiment, the flange 110 includes: a flange plate 111, a mounting ring 112 and a closed sealing sheet 113. A central hole 114 is provided at the center of the flange plate 111, and the central hole 114 is used to reserve a passage for the detection probe to pass through the flange 110 and the connecting pipe 101 to the flue for detection. The mounting ring 112 is covered and mounted on the central hole 114, and is used to fix the closed sealing sheet 113 at the position of the central hole 114.

[0041] In this embodiment, the closed sealing sheet 113 is a sealing film, which is easy to deform and has strong adhesion, and helps to fill the gap between the detection probe and the outer wall, thereby ensuring its airtight function. In addition, the sealing film has a low cost and is easy to replace, so it is easy to maintain the closed state of the flue detection and sealing device 100 on the flue.

[0042] The isolation chamber 120 is located at the flue side of the flange 110 and is used to add an exhaust gas volume limiting space in the detection space that is open to the outside and formed by the connecting pipe 101 and the flange 110. The isolation chamber 120 includes a surrounding wall 121 and a movable cover plate 122. Figure 1-3The surrounding wall 121 in the provided embodiment is fixed on the annular wall extending from the flange 111 to the connecting pipe 101. The surrounding wall 121 is arranged to surround the center point of the center hole 114, and the cross section of the surrounding wall 121 in the plane direction of the flange 110 is concentric with the center hole 114. The movable cover plate 122 is arranged on the end opposite to the closed sealing sheet 113, that is, the movable cover plate 122 is located on the port of the surrounding wall 121 close to the flue side. The outer edge of the movable cover plate 122 can completely cover the port of the surrounding wall 121 to which it is attached.

[0043] In this embodiment, the closed sealing sheet 113 is provided with a "M"-shaped closed seam in the middle, and the closed seam divides the closed sealing sheet 113 into a plurality of tightly spliced ​​sealing sheets 1131. In the absence of external force, all the sealing sheets 1131 of the closed sealing sheet 113 are tightly spliced ​​with each other, and play an isolating role for the space located on both sides thereof. When the detection probe acts on the closed sealing sheet 113, the plurality of sealing sheets 1131 of the closed sealing sheet 113 will be stretched open by the detection probe, so that the isolation chamber 120 is connected with the flue. At this time, while the plurality of sealing sheets 1131 are stretched open and form a channel, the outer wall of the detection probe will also be wrapped, thereby filling the gap between the detection probe and the flange 111, and preventing the exhaust gas in the flue from being discharged through the connecting pipe 101 during the detection operation of the detection probe, so as to ensure the airtightness requirements of the flue for the detection scene.

[0044] When the detection probe enters the flue through the flange 110 and starts detection, the closed seam of the closed sealing sheet 113 splits toward the flue side, forming a passage connected to the isolation chamber 120. As the detection probe extends toward the flue, it enters the isolation chamber 120, the movable cover 122 opens, and the isolation chamber 120 is connected to the flue, so that the detection probe can be exposed to the exhaust gas of the flue to complete the detection. The gap of the detection probe at the flange 111 is sealed and filled by the multiple sealing single pieces 1131 of the closed sealing sheet 113 to prevent the exhaust gas in the flue from being discharged from here.

[0045] When the detection probe is detached from the flange 110 and is ready to end the detection, the multiple sealing sheets 1131 of the closed sealing sheet 113 still wrap the outer wall part contacted by the detection probe, and the degree of cracking between the individual sealing sheets 1131 gradually decreases, switching from a cracked state to a closed state until the detection probe completely leaves the closed sealing sheet 113, isolating the exhaust gas in the flue, thereby ensuring the air quality of the detection environment.

[0046] In addition, when the detection probe is separated from the flange 110 and is ready to end the detection, when the end of the detection probe is completely retracted to the isolation chamber 120, the movable cover 122 is closed, isolating most of the exhaust gas on the flue side of the movable cover 122, and the exhaust gas volume inside the isolation chamber 120 will not exceed the volume of the isolation chamber 120, so that the air pressure of the isolation chamber 120 on the closed sealing piece 113 is very small, thereby ensuring that the closed sealing piece 113 will not be affected by the air pressure of the connected flue. Further, even if the sealing function of the closed sealing piece 113 is affected due to aging and other reasons, the amount of gas that can enter the detection environment from the flue detection closure device 100 is also limited by the volume of the isolation chamber 120, avoiding the problem that the existing detection structure is difficult to control its air tightness.

[0047] Based on the structure of the flue detection and sealing device 100 provided in the present application, in the detection space formed by the connecting pipe 101 and the flange 110 on the outside of the flue, a mounting ring 112 is arranged in the center hole 114 of the flange 111, and the closed sealing sheet 113 is pressed to the position of the center hole 114. During the passage of the detection probe, the closed sealing sheet 113 always wraps the outer wall of the detection probe, fills the gap between the detection probe and the flange 111, and isolates the exhaust gas in the flue; during the process of the detection probe detaching from the flange 110, the degree of cracking between the individual sealing sheets 1131 of the closed sealing sheet 113 gradually decreases, and the state switches from the cracked state to the closed state until the detection probe completely leaves the closed sealing sheet 113, and the exhaust gas is isolated in the flue. Furthermore, at this time, the air pressure on the closed sealing piece 113 is limited by the volume of the isolation chamber 120, so that the air tightness of the closed sealing piece 113 will not be affected by the air pressure of the connected flue, or even if the air tightness of the closed sealing piece 113 is affected by aging or other reasons, the amount of gas entering the detection environment from the flue detection sealing device 100 is also limited by the volume of the isolation chamber 120, thereby solving the problem that the existing detection structure is difficult to control its air tightness, and greatly reducing the health risks of detection personnel during the detection process.

[0048] In the above embodiment, the flange 111 is provided with a sealing groove 1111 on the outer end surface, the thickness of the sealing groove 1111 is equal to or less than the thickness of the closed sealing sheet 113, and the outer edge diameter of the sealing groove 1111 is less than or equal to the outer edge diameter of the mounting ring 112, so that the closed sealing sheet 113 can be compacted and positioned by the mounting ring 112 and the sealing groove 1111. The sealing groove 1111 is arranged around the central hole 114 of the flange 111, and is concentric with the mounting ring 112, so as to facilitate alignment during installation.

[0049] Based on the above embodiments, Figure 4-6In the provided embodiment, the mounting ring 112 includes an outer pressure ring 1121 and an inner pressure ring 1122, which are separable, and the closed sealing sheet 113 is installed between the inner pressure ring 1122 and the outer pressure ring 1121. The inner pressure ring 1122 is installed on the sealing groove 1111, and the size of the outer edge of the inner pressure ring 1122 is consistent with the outer edge of the sealing groove 1111. During installation, the inner pressure ring 1122 and the sealing groove 1111 can be accurately aligned by aligning their respective outer edges. In addition, in this embodiment, the inner pressure ring 1122 and the outer pressure ring 1121 can be positioned on the closed sealing sheet 113 from the upper and lower sides respectively by fasteners.

[0050] Based on the above embodiment of the mounting ring 112 including the outer pressure ring 1121 and the inner pressure ring 1122, the isolation chamber 120 is fixed on the side of the inner pressure ring 1122 close to the flue, and the surrounding wall 121 and the inner pressure ring 1122 are integrally formed, that is, the surrounding wall 121 and the inner pressure ring 1122 form a cylindrical component with at least one end provided with a circular ring. When installing the flue detection and closure device 100, the surrounding wall 121 is inserted into the connecting pipe 101 along the connecting pipe 101 through the center hole 114, and the inner pressure ring 1122 is aligned with the sealing groove 1111, so that the positioning installation between the inner pressure ring 1122 and the flange 111 can be completed. Based on the integrally formed structure of the surrounding wall 121 and the inner pressure ring 1122, the original detection structure consisting of the connecting pipe 101 and the flange 111 can be modified, that is, the combination mechanism of the mounting ring 112 with the closed sealing plate 113 installed and the surrounding wall 121 is connected. The surrounding wall 121 is inserted into the connecting pipe 101 along the connecting pipe 101 through the center hole 114, and the inner pressure ring 1122 is aligned and fixed with the outer edge of the sealing groove 1111, so as to improve the airtightness of the detection structure and greatly reduce the health risks of the detection personnel; at the same time, it also helps to control the improvement cost of flue detection.

[0051] Regarding the length of the isolation chamber 120, in the present application, two embodiments can be provided, as follows:

[0052] Embodiment 1, as Figure 3 or Figure 6 As shown, the surrounding wall 121 extends into the flue along the extending direction of the connecting pipe 101, and the movable cover plate 122 is located in the flue Y. When the detection probe is extended along the surrounding wall 121 and extended out of the movable cover plate 122, it can be placed in the flue Y. In this embodiment, the opening of the movable cover plate 122 faces the exhaust direction, as shown in FIG. Figure 3 or Figure 6The direction indicated by the arrow in FIG. Based on the direction of the opening of the movable cover 122, when the detection is completed and the detection probe is withdrawn, the movable cover 122 can be automatically closed under the action of the flue wind speed. In the non-detection period, under the action of the flue wind speed, the movable cover 122 can maintain a closed state with the surrounding wall 121, thereby ensuring the isolation effect of the isolation chamber 120 on the flue exhaust gas and the air quality outside the flue.

[0053] Embodiment 2, as Figure 2 or Figure 5 As shown, the isolation chamber 120 is built into the connecting pipe 101, and the movable cover plate 122 is located in the pipe of the connecting pipe 101. When the detection probe is extended along the surrounding wall 121 and extends out of the movable cover plate 122, it still needs to continue to extend a distance toward the center of the flue to reach the flue.

[0054] The movable cover 122 and the surrounding wall 121 in the above-mentioned embodiment 1 and embodiment 2 are connected to each other by elastic hinges (not shown in the figure), that is, when the detection is completed and the detection probe is withdrawn, the movable cover 122 can be automatically closed under the elastic force of the elastic hinge; or during the non-detection period, it is ensured that the isolation chamber 120 plays an isolation role on the flue.

[0055] In addition, for the surrounding wall 121 in the above-mentioned embodiment 1 and embodiment 2, a closed loop 1211 can be further provided at the port located on the flue side. In the closed state of the isolation chamber 120, the closed loop 1211 and the movable cover plate 122 are parallel and fitted to each other. Corresponding magnetic sheets (not shown) are provided on the fitting surfaces opposite to the closed loop 1211 and the movable cover plate 122, namely a positive magnetic sheet and a negative magnetic sheet. Based on the magnetic fitting structure of the closed loop 1211 and the movable cover plate 122 at the port of the isolation chamber 120 close to the flue, the isolation effect of the isolation chamber 120 on the flue exhaust gas can be further enhanced during the non-detection period, thereby ensuring the sealing of the flue exhaust gas by the flue detection and closure device 100 provided in this embodiment, thereby greatly reducing the health risks of the detection personnel, and at the same time ensuring the air quality of the environment outside the flue.

[0056] On the other hand, reference Figure 7-8 , Figure 7 A schematic diagram of the structure of a flue detection flange sealing mechanism provided by an embodiment of the present application, Figure 8 A schematic structural diagram of a flue detection flange sealing mechanism provided in another embodiment of the present application.

[0057] Based on the flue detection and sealing device 100 provided in the above embodiment, the present application further provides a flue detection flange sealing mechanism 12. The flue detection flange sealing mechanism 12 is arranged in the flue detection and sealing device 100 provided in the above embodiment, specifically arranged in the flange 111.

[0058] The flange 111 is provided with a sealing groove 1111 on the outer end surface, the thickness of the sealing groove 1111 is equal to or less than the thickness of the closed sealing sheet 113, the outer edge diameter of the sealing groove 1111 is less than or equal to the outer edge diameter of the mounting ring 112, and the mounting ring 112 and the sealing groove 1111 can be used to compact and position the closed sealing sheet 113. The sealing groove 1111 is arranged around the central hole 114 of the flange 111, and is concentric with the mounting ring 112, so as to facilitate alignment during installation.

[0059] On the basis of the above embodiment, the mounting ring 112 includes an outer pressure ring 1121 and an inner pressure ring 1122, which are detachable, and the closed sealing sheet 113 is installed between the inner pressure ring 1122 and the outer pressure ring 1121. The inner pressure ring 1122 is installed on the sealing groove 1111, and the outer edge of the inner pressure ring 1122 is consistent in size with the outer edge of the sealing groove 1111. During installation, the inner pressure ring 1122 and the sealing groove 1111 can be precisely aligned by aligning their respective outer edges. In addition, in this embodiment, the inner pressure ring 1122 and the outer pressure ring 1121 can be positioned on the closed sealing sheet 113 from the upper and lower sides respectively by fasteners.

[0060] Based on the flue detection flange sealing mechanism 12 provided in the embodiment of the present application, the isolation chamber 120 is fixedly arranged on the side of the inner pressure ring 1122 close to the flue, and the surrounding wall 121 and the inner pressure ring 1122 are integrally formed, that is, the surrounding wall 121 and the inner pressure ring 1122 form a cylindrical component with at least one end provided with a circular ring. When installing the corresponding flue detection sealing device 100, the surrounding wall 121 is inserted into the connecting pipe 101 along the connecting pipe 101 through the center hole 114, and the inner pressure ring 1122 is aligned with the outer edge of the sealing groove 1111, so that the installation and fixation between the flue detection flange sealing mechanism 12 and the flange 111 can be completed. Based on the flue detection flange sealing mechanism 12 including the structure of the surrounding wall 121 and the inner pressure ring 1122 being integrally formed, the detection structure originally including the connecting pipe 101 and the flange 111 can be modified. That is, by inserting the surrounding wall 121 of the flue detection flange sealing mechanism 12 into the connecting pipe 101 through the center hole 114 along the connecting pipe 101, and aligning the inner pressure ring 1122 with the outer edge of the sealing groove 1111, the airtightness of the detection structure during the detection period and the non-detection period can be improved, which greatly reduces the health risks of the detection personnel, and thus also helps to control the modification cost of the existing detection structure.

[0061] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

Claims

1. A flue detection and sealing device, characterized in that: At least: Connecting pipes, flanges, and isolation chambers; The connecting pipe is vertically fixed to the outer wall of the flue, and the flange is arranged at the end of the connecting pipe away from the flue side; The flange comprises: a flange plate, a mounting ring and a closed sealing sheet, wherein a center hole is provided at the center of the flange plate, the mounting ring is covered and mounted on the center hole, and the closed sealing sheet is fixed at the position of the center hole by the mounting ring; The isolation chamber is an openable space formed on the flue side of the flange, which includes: a surrounding wall and a movable cover plate; the surrounding wall is arranged to surround the center point of the center hole, and the movable cover plate is located at the end opposite to the closed sealing plate and covers the port of the surrounding wall.

2. The smoke duct detection and sealing device according to claim 1, characterized in that: The flange is provided with a sealing groove on the outer end surface, and the sealing groove is arranged around the central hole.

3. The smoke duct detection and sealing device according to claim 2, characterized in that: The mounting ring comprises: an outer pressure ring and an inner pressure ring, which are detachable; The inner pressure ring is installed on the sealing groove, and the closed sealing sheet is located between the inner pressure ring and the outer pressure ring.

4. The smoke duct detection and sealing device according to claim 3, characterized in that: The isolation chamber is located on the flue side of the inner pressure ring, and the surrounding wall is integrally formed with the inner pressure ring.

5. The smoke duct detection and sealing device according to claim 1, characterized in that: The isolation chamber is fixed on the flue side of the flange, and the surrounding wall is integrally formed with the flange.

6. The smoke duct detection and sealing device according to claim 1, characterized in that: The surrounding wall extends into the flue along the extending direction of the connecting pipe, the movable cover is located in the flue, and the opening of the movable cover is arranged toward the exhaust direction.

7. The smoke duct detection and sealing device according to claim 1, characterized in that: The isolation chamber is placed inside the connecting pipe, and the movable cover is located inside the pipeline of the connecting pipe.

8. The smoke duct detection and sealing device according to one of claims 6 and 7, characterized in that: The movable cover plate and the surrounding wall are connected to each other via an elastic hinge.

9. The smoke duct detection and sealing device according to one of claims 6 and 7, characterized in that: A closed ring is provided at the port of the surrounding wall on the flue side, and corresponding magnetic sheets are provided on the mutually abutting surfaces of the closed ring and the movable cover plate.

10. A flue inspection flange sealing mechanism, characterized in that: It is arranged on the flange of the flue detection and sealing device according to claim 1, and is installed on the sealing groove of the flange end surface of the flange, and the sealing groove is arranged around the central hole; The flue detection flange sealing mechanism comprises: a mounting ring, a closed sealing sheet and an isolation chamber; Wherein, the mounting ring comprises: an outer pressure ring and an inner pressure ring, which are detachable, the inner pressure ring is mounted on the sealing groove, and the closed sealing sheet is located between the inner pressure ring and the outer pressure ring; The isolation chamber is located on the flue side of the inner pressure ring, and the surrounding wall is integrally formed with the inner pressure ring.

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