Flange assembly matched with high-pressure boiler

Abstract

The utility model relates to a flange assembly used in cooperation with a high-pressure boiler. The flange assembly comprises two flange pieces and a transparent observation cylinder. One end of the flange piece is a large end, and the other end is a small end; the inner side of the small end is sunken inwards to form a first annular step part, and a rubber layer is arranged on the inner wall of the first annular step part; a plurality of first connecting through holes are formed in the small end in an annular array manner; a plurality of second connecting through holes are formed in the large end in an annular array manner; the two ends of the transparent observation cylinder are inserted into the first annular step parts of the two flange pieces respectively, and the connecting positions between the transparent observation cylinder and the first annular step parts are coated with glue. A stud is connected to the first connecting through hole in the small end of any flange piece in a sleeved mode, the other end of the stud is connected to the corresponding first connecting through hole in the small end of the other flange piece in a sleeved mode, and first nuts are connected to the portions, located at the outer ends of the two flange pieces, of the stud in a sleeved mode. According to the utility model, the internal condition of the pipeline can be observed, and the monitoring effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of metal processing and manufacturing technology, and in particular to a flange assembly for use with high-pressure boilers. Background Technology

[0002] Flanges for high-pressure boilers are primarily used for pipeline connections, especially in high-pressure boiler systems, where they play a crucial role in connection and sealing. Various flange types are available, including lateral, axial, and slip-on flanges, to meet different connection requirements. High-pressure boiler flanges are typically made of high-temperature and high-pressure resistant materials such as carbon steel and stainless steel to ensure their strength and sealing performance. The flange manufacturing process involves multiple techniques, such as forging and welding, to ensure their quality and performance.

[0003] Currently, the flanges connecting the pipes on high-pressure boilers prevent the observation of the internal medium connection after the pipes are connected, thus failing to play a monitoring role in industrial production and effectively preventing accidents.

[0004] It is desirable to provide a flange assembly for use with high-pressure boilers, in order to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a flange assembly for use with high-pressure boilers, which can observe the internal condition of the pipeline and play a monitoring role.

[0006] To achieve the above-mentioned purpose of the utility model, a flange assembly for high-pressure boilers is provided, including two flanges and a transparent observation tube;

[0007] One end of the flange is the large end, and the other end is the small end;

[0008] The inner side of the small end is recessed inward to form a first annular step portion, and a rubber layer is provided on the inner wall of the first annular step portion.

[0009] The small end is provided with a plurality of first connection through holes in a ring array;

[0010] The large end is provided with several second connection through holes in a ring array;

[0011] The two ends of the transparent observation tube are respectively inserted into the first annular step portion of the two flanges, and the connection between the transparent observation tube and the first annular step portion is coated with glue.

[0012] A stud is fitted onto the first connecting through hole on the small end of any of the flanges, and the other end of the stud is fitted onto the corresponding first connecting through hole on the small end of another flange. A first nut is fitted onto the stud at the outer end of both flanges.

[0013] Preferably, the first annular step portion extends upward near the inner wall edge of the flange to form an annular limiting protrusion.

[0014] Preferably, the stud is fitted with a second nut on the inner side of both flanges.

[0015] Preferably, the inner side of the large end of the flange is recessed inward to form a second annular step portion, and a filter screen is placed inside the second annular step portion.

[0016] Preferably, the flange has two concentric annular grooves on its large end, and a sealing ring is inserted into each annular groove.

[0017] This utility model discloses a flange assembly for use with high-pressure boilers, which has the following advantages compared with the prior art:

[0018] (1) By installing a transparent observation tube between two flanges, the flow of medium in the pipeline can be effectively observed, which plays a monitoring role and is easy to install;

[0019] (2) The design is simple and easy to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the flange component in this embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of a flange assembly for a high-pressure boiler according to this embodiment. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of a flange assembly for a high-pressure boiler according to this embodiment. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of a flange assembly for a high-pressure boiler according to this embodiment. Figure 3 . Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 2 As shown, a flange assembly for a high-pressure boiler includes two flanges 1 and a transparent observation tube 2.

[0026] like Figure 1 As shown, one end of the flange 1 is the large end 3, and the other end is the small end 4; the inner side of the small end 4 is recessed inward to form a first annular step portion 5, and the inner wall of the first annular step portion 5 is provided with a rubber layer (not shown in the figure).

[0027] The small end 4 is provided with a plurality of first connecting through holes 6 in a ring array; the large end 3 is provided with a plurality of second connecting through holes 7 in a ring array.

[0028] like Figure 2 As shown, the two ends of the transparent observation tube 2 are respectively inserted into the first annular step portion 5 on the two flange parts 1, and the connection between the transparent observation tube 2 and the first annular step portion 5 is coated with glue to achieve a sealing effect.

[0029] In this embodiment, the first annular step 5 extends upward near the inner wall edge of the flange 1 to form an annular limiting protrusion 8; which serves to limit the insertion of the transparent observation tube 2.

[0030] A stud 9 is fitted onto the first connecting through hole 6 on the small end 4 of any of the flange pieces 1. The other end of the stud 9 is fitted onto the corresponding first connecting through hole 6 on the small end of another flange piece. A first nut 10 is fitted onto the stud 9 at the outer end of both flange pieces 1. With this arrangement, by tightening the first nut 10, the two flange pieces 1 and the transparent observation tube 2 can be effectively fixed and connected.

[0031] Furthermore, in this embodiment, the stud 9 is fitted with a second nut 11 on the inner side of both flanges 1, further ensuring the stability of the connection between the two flanges 1 and the transparent observation tube 2.

[0032] In this embodiment, as Figure 3 and Figure 4 As shown, the inner side of the large end 3 of the flange 1 is recessed inward to form a second annular step portion 12. A filter screen 13 is placed inside the second annular step portion 12 to effectively block foreign objects from entering the high-pressure boiler.

[0033] In this embodiment, the large end 3 of the flange 1 is provided with two concentric annular grooves 14, and a sealing ring 15 is inserted into each annular groove 14; this arrangement serves as a double seal.

[0034] When installing the flange assembly into the high-pressure boiler, select a transparent observation tube of appropriate length and insert both ends of it into the first annular step portion on the small end of the two flanges respectively. Then, insert studs into the first connecting through holes on the small end of the two flanges, tighten all the first and second nuts, apply glue to the connection part between the transparent observation tube and the first step portion, and then place a filter screen on the second annular step portion on the large end of the two flanges. Connect the two large ends to the high-pressure boiler and the external pipeline to achieve the connection.

[0035] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A flange assembly for use with a high-pressure boiler, characterized in that, Includes two flanges and a transparent observation tube; One end of the flange is the large end, and the other end is the small end; The inner side of the small end is recessed inward to form a first annular step portion, and a rubber layer is provided on the inner wall of the first annular step portion. The small end is provided with a plurality of first connection through holes in a ring array; The large end is provided with several second connection through holes in a ring array; The two ends of the transparent observation tube are respectively inserted into the first annular step portion of the two flanges, and the connection between the transparent observation tube and the first annular step portion is coated with glue. A stud is fitted onto the first connecting through hole on the small end of any of the flanges, and the other end of the stud is fitted onto the corresponding first connecting through hole on the small end of another flange. A first nut is fitted onto the stud at the outer end of both flanges.

2. The flange assembly for a high-pressure boiler according to claim 1, characterized in that, The first annular step extends upward near the inner wall edge of the flange to form an annular limiting protrusion.

3. A flange assembly for a high-pressure boiler according to claim 1, characterized in that, The studs are located inside both flanges and are fitted with second nuts.

4. A flange assembly for a high-pressure boiler according to claim 1, characterized in that, The inner side of the large end of the flange is recessed inward to form a second annular step, and a filter screen is placed inside the second annular step.

5. A flange assembly for a high-pressure boiler according to any one of claims 1 to 4, characterized in that, The flange has two concentric annular grooves on its large end, and a sealing ring is inserted into each annular groove.

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