Pressing sleeve type water-cooling loop vacuum flange for vacuum high-temperature furnace

Abstract

The utility model provides a pressing sleeve type water-cooling loop vacuum flange for a vacuum high-temperature furnace, and belongs to the technical field of vacuum flanges. The problems that a sealing ring is damaged due to high-temperature gas of an existing loop vacuum flange and a steel ring is deformed and lost when the steel ring is used for positioning are solved. Comprising a lap joint flange pipe, a step water-cooling flange, a step lap joint flange, a fixed flange and a fixed flange pipe, the step water-cooling flange is welded to the lap joint flange pipe, the step lap joint flange is arranged in the lap joint flange pipe in a sleeved mode, and the step lap joint flange and the step water-cooling flange are positioned through a step; a fixed flange is welded on the fixed flange pipe, and the top surface of the fixed flange is hermetically connected with the bottom surface of the step water-cooling flange; the utility model is applied to the vacuum high-temperature furnace.

Description

Technical Field

[0001] This utility model provides a pressure-sleeved water-cooled slip-on vacuum flange for a vacuum high-temperature furnace, belonging to the field of high-temperature industrial electric furnace technology. Background Technology

[0002] Vacuum flanges are used in vacuum high-temperature furnaces to seal various pipe interfaces. Based on the fixing method, they can be divided into loose flanges and fixed flanges. Standard vacuum loose flanges have a steel ring structure. When the flange inner diameter is large, the steel ring is prone to deformation during installation, leading to difficulties in reinstallation. Secondly, the steel ring can detach during disassembly, easily resulting in loss. Furthermore, standard vacuum loose flanges lack water cooling; when high-temperature gas passes through the flange, excessive temperature can damage the sealing ring, ultimately causing leakage. To address this problem, a "compression-type" water-cooled loose vacuum flange for vacuum high-temperature furnaces not only solves the problem of sealing ring damage caused by high-temperature gas, but also, through a compression nesting method, provides excellent sealing. Simultaneously, this structure eliminates the need for steel ring positioning, avoiding problems caused by steel ring deformation and loss. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a pressure-sleeved water-cooled slip-on vacuum flange for a vacuum high-temperature furnace. The purpose is to improve the structure of the vacuum slip-on flange so that not only the sealing surface can be cooled, but also the vacuum seal can be achieved through step positioning, and the slip-on flange is always fitted into the vacuum pipeline.

[0004] The technical solution adopted by this utility model is: a pressure-sleeved water-cooled loose vacuum flange for a vacuum high-temperature furnace, including a loose flange pipe, a stepped water-cooled flange, a stepped loose flange, a fixed flange and a fixed flange pipe, wherein a stepped water-cooled flange is welded on the loose flange pipe, and a stepped loose flange is sleeved inside the loose flange pipe, and the stepped loose flange is positioned by the step and the stepped water-cooled flange.

[0005] A fixed flange is welded onto the fixed flange pipe, and the top surface of the fixed flange is sealed to the bottom surface of the stepped water-cooled flange.

[0006] Furthermore, the stepped loose flange and the fixed flange are respectively provided with bolt positioning holes of the same position and diameter at equal intervals, and the stepped loose flange and the fixed flange are fixedly connected by bolts.

[0007] Furthermore, the stepped water-cooled flange has an inlet and an outlet at both ends, and an inlet pipe and an outlet pipe are welded to the inlet and outlet respectively. The stepped water-cooled flange has a water passage groove that connects the inlet and outlet.

[0008] Furthermore, a sealing groove is provided on the top surface of the fixed flange, and a sealing ring is installed in the sealing groove. The top surface of the fixed flange contacts the bottom surface of the stepped water-cooled flange and compresses the sealing ring, so that a sealed connection is achieved between the stepped water-cooled flange and the fixed flange.

[0009] Furthermore, the loose flange pipe and the stepped water-cooled flange are welded together as one unit through positioning steps.

[0010] Furthermore, the bottom surface of the stepped water-cooled flange is lower than the bottom surface of the stepped loose flange.

[0011] Furthermore, the fixed flange pipe and the fixed flange are welded together as one unit through a positioning step.

[0012] The advantages of this utility model over the prior art are as follows:

[0013] 1. This structure easily solves the problem of bolt hole misalignment caused by welding deformation of the fixed flange;

[0014] 2. This structure eliminates the use of steel rings, thus solving the problems of deformation and loss of steel rings in large-size slip-on flanges;

[0015] 3. This structure can reduce the risk of high-temperature gas damaging the sealing ring through a stepped water-cooled flange;

[0016] 4. When the pipe material is special or expensive, using this loose flange can reduce costs, because welding flanges of the same material is more expensive, while loose flanges can use different materials.

[0017] 5. Easy and low-cost maintenance and upkeep;

[0018] 6. This utility model has a reasonable structure, is simple and reliable, and is easy to install. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the flange structure of this utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of the flange of this utility model;

[0022] Figure 3 This is a partially enlarged schematic diagram of the flange of this utility model;

[0023] In the diagram: 1 is a slip-on flange pipe, 2 is an inlet pipe, 3 is a stepped water-cooled flange, 4 is a stepped slip-on flange, 5 is a fixed flange, 6 is a fixed flange pipe, 7 is an outlet pipe, and 8 is a sealing ring. Detailed Implementation

[0024] like Figures 1 to 3As shown, this utility model provides a pressure-sleeved water-cooled slip-on vacuum flange for a vacuum high-temperature furnace, including a slip-on flange pipe 1, a water inlet pipe 2, a stepped water-cooled flange 3, a stepped slip-on flange 4, a fixed flange 5, a fixed flange pipe 6, a water outlet pipe 7, and a sealing ring 8. The stepped water-cooled flange 3 is installed on the slip-on flange pipe 1, and a positioning step is provided on the stepped water-cooled flange 3. The slip-on flange pipe 1 and the stepped water-cooled flange 3 are welded together through the positioning step to ensure no air leakage. The stepped slip-on flange 4 is fitted inside the slip-on flange pipe 1, and a bolt positioning hole is provided on the stepped slip-on flange 4. The size and position of this hole can refer to the vacuum flange standard. The stepped slip-on flange 4 is positioned with the stepped water-cooled flange 3 through the step, and the stepped slip-on flange 4 contacts the stepped water-cooled flange 3 on both the top and bottom surfaces, with a gap left on the side of the step.

[0025] A fixed flange 5 is installed on the fixed flange pipe 6, and the fixed flange pipe 6 and the fixed flange 5 are welded together by a positioning step to ensure no air leakage. The fixed flange 5 also has bolt positioning holes of the same position and size as those on the stepped loose flange 4, and the stepped loose flange 4 is connected to the fixed flange 5 by bolts. A sealing groove is formed on the top surface of the fixed flange 5, and a sealing ring 8 is installed in the sealing groove. The stepped water-cooled flange 3 has a sealing surface; the top surface (sealing surface) of the fixed flange 5 contacts the bottom surface (sealing surface) of the stepped water-cooled flange 3, which can compress the sealing ring 8, thus achieving a sealed contact between the stepped water-cooled flange 3 and the fixed flange 5.

[0026] The bottom surface of the stepped water-cooled flange 3 is lower than the bottom surface of the stepped loose flange 4, which ensures that the sealing surface of the stepped water-cooled flange 3 is in contact with the sealing surface of the fixed flange 5.

[0027] The stepped water-cooled flange 3 has an inlet and an outlet at each end. An inlet pipe 2 and an outlet pipe 7 are welded to the inlet and outlet respectively. Welding the inlet pipe 2 and outlet pipe 7 to the stepped water-cooled flange 3 as a single unit ensures no leakage. A water passage groove is provided inside the stepped water-cooled flange 3. Cooling water enters the water passage groove from the inlet pipe 2 and then flows out from the outlet pipe 7.

[0028] The stepped loose flange 4 can be made of a lower-priced material.

[0029] This utility model has a simple and reliable structure, eliminating the use of steel rings and solving the problems of steel ring deformation and loss in large-size slip flanges. It is easy to install, and its slip flange is positioned by steps, which is reliable and allows for flexible assembly. Secondly, this structure can solve the problem of bolt hole misalignment caused by welding deformation of fixed flanges. At the same time, the stepped water-cooled flange 3 can reduce the risk of high-temperature gas damaging the sealing ring. The slip flange can be installed using other lower-priced materials, thereby reducing costs.

[0030] Regarding the specific structure of this utility model, it should be noted that the connection relationships between the various component modules adopted in this utility model are definite and achievable. Except as specifically described in the embodiments, their specific connection relationships can bring about corresponding technical effects and solve the technical problems proposed by this utility model without relying on the execution of corresponding software programs. The models of the components, modules, and specific components appearing in this utility model, the connection methods between them, and the conventional usage methods and expected technical effects brought about by the above-mentioned technical features, unless specifically described, are all publicly disclosed content in patents, journal articles, technical manuals, technical dictionaries, and textbooks that can be obtained by those skilled in the art before the application date, or belong to conventional technology, common knowledge, and other existing technologies in this field. There is no need to elaborate, which makes the technical solution provided in this case clear, complete, and achievable, and can reproduce or obtain corresponding physical products based on this technical means.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pressure-sleeved, water-cooled, slip-on vacuum flange for a vacuum high-temperature furnace, characterized in that: It includes a slip-on flange pipe (1), a stepped water-cooled flange (3), a stepped slip-on flange (4), a fixed flange (5), and a fixed flange pipe (6). The slip-on flange pipe (1) is welded with a stepped water-cooled flange (3), and the slip-on flange pipe (1) is fitted with a stepped slip-on flange (4). The stepped slip-on flange (4) is positioned by the step and the stepped water-cooled flange (3). A fixed flange (5) is welded onto the fixed flange pipe (6), and the top surface of the fixed flange (5) is sealed to the bottom surface of the stepped water-cooled flange (3).

2. The vacuum high-temperature furnace pressure-sleeved water-cooled slip-on vacuum flange according to claim 1, characterized in that: The stepped loose flange (4) and the fixed flange (5) are provided with bolt positioning holes of the same position and diameter at equal intervals, and the stepped loose flange (4) and the fixed flange (5) are fixedly connected by bolts.

3. The vacuum high-temperature furnace pressure-sleeved water-cooled slip-on vacuum flange according to claim 1, characterized in that: The stepped water-cooled flange (3) has an inlet and an outlet at both ends, and an inlet pipe (2) and an outlet pipe (7) are welded on the inlet and outlet respectively. The stepped water-cooled flange (3) has a water channel connecting the inlet and outlet.

4. The vacuum high-temperature furnace pressure-sleeved water-cooled slip-on vacuum flange according to claim 3, characterized in that: A sealing groove is provided on the top surface of the fixed flange (5), and a sealing ring (8) is installed in the sealing groove. The top surface of the fixed flange (5) contacts the bottom surface of the stepped water-cooled flange (3) and compresses the sealing ring (8), so that a sealed connection is achieved between the stepped water-cooled flange (3) and the fixed flange (5).

5. The pressure-sleeved water-cooled slip-on vacuum flange for a vacuum high-temperature furnace according to claim 1, characterized in that: The loose flange (1) and the stepped water-cooled flange (3) are welded together by positioning steps.

6. The pressure-sleeved water-cooled slip-on vacuum flange for a vacuum high-temperature furnace according to claim 1, characterized in that: The bottom surface of the stepped water-cooled flange (3) is lower than the bottom surface of the stepped loose flange (4).

7. The vacuum high-temperature furnace pressure-sleeved water-cooled slip-on vacuum flange according to claim 1, characterized in that: The fixed flange pipe (6) and the fixed flange (5) are welded together by a positioning step.

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