Corrosion-resistant flange applied to high-concentration acid and alkali medium

Abstract

The utility model relates to corrosion -resistant flange technical field discloses a corrosion -resistant flange for high concentration acid -base medium, including tee bend pipe, installation mechanism and connecting mechanism, the installation mechanism includes fixed flange, the top fixed connection of fixed flange has sealing washer, the top fixed connection of sealing washer has gasket, the top fixed connection of gasket has ring, the top fixed connection of ring has fixed block, the top of fixed block is provided with screw hole, the top of fixed block is provided with connecting groove. The utility model sets up the fixed flange whole and the bottom fixed connection connecting pipe of both sides fixed connection of fixed pipe, when needing to carry out drainage, the plug block fixedly connected at the bottom of connecting pipe is opened, the fixed flange whole is divided into fixed flange and connecting flange through the setting, and the contact area is increased through sealing washer and rubber ring, gas is not easy to enter the fixed flange whole inside, and the ring is connected through the insertion slot and increases the fixed effect.

Description

Technical Field

[0001] This utility model relates to the field of corrosion-resistant flange technology, and in particular to a corrosion-resistant flange applicable to high-concentration acid and alkali media. Background Technology

[0002] High-concentration acid and alkali media environments pose a severe challenge to flange connections in pipeline systems. As a key component of pipeline connections, flanges need to possess good corrosion resistance, sealing performance, and mechanical strength to ensure safe operation in extreme chemical environments. Currently, materials commonly used for corrosion-resistant flanges include high-alloy stainless steel, titanium alloys, and special plastics, which can resist the erosion of acid and alkali media to a certain extent. However, under the long-term action of high-concentration acid and alkali media, these materials still suffer from corrosion, fatigue, and aging problems. Especially under conditions of frequent temperature and pressure changes, the service life and stability of flanges are difficult to guarantee.

[0003] In the existing technology, flanges have poor sealing performance. In environments with high concentrations of acid and alkali media, conventional gaskets and sealing materials (such as rubber, asbestos, etc.) may be corroded by chemical media, leading to sealing failure. This not only affects the sealing effect of the flange, but may also cause leakage problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a corrosion-resistant flange applicable to high-concentration acid and alkali media.

[0005] This utility model is achieved by the following technical solution: a corrosion-resistant flange for use in high-concentration acid and alkali media, comprising a tee pipe, an installation mechanism and a connection mechanism, wherein a connecting pipe is fixedly connected to the bottom of the tee pipe, a plug is fixedly connected to the bottom of the connecting pipe, a fixing pipe is fixedly connected to the side of the connecting pipe, and a flange assembly is fixedly connected to the top of the fixing pipe; an installation mechanism is provided on the side of the flange assembly, and a connection mechanism is provided on the side of the flange assembly. The installation mechanism includes a fixed flange, a sealing gasket fixedly connected to the top of the fixed flange, a washer fixedly connected to the top of the sealing gasket, a retaining ring fixedly connected to the top of the washer, a fixing block fixedly connected to the top of the retaining ring, a threaded hole and a connecting groove opened on the top of the fixing block, a sealing ring fixedly connected to the top of the fixing block, and a protective sleeve fixedly connected to the top of the sealing ring.

[0006] As a further improvement to the above solution, two fixed flanges are provided, which are fixedly connected to the side of the fixed pipe in a centrally symmetrical manner. Two sealing gaskets are provided, which are fixedly connected to the top of the fixed flange in a centrally symmetrical manner. Two washers are provided.

[0007] The above technical solution can improve the fixing precision of the flange, prevent high levels of sulfuric acid from flowing into the flange and accelerating the flange corrosion rate.

[0008] As a further improvement to the above solution, the number of the insertion rings is set to two, and the number of the fixing blocks is set to two, with the two fixing blocks being fixedly connected to the top of the insertion rings in a centrally symmetrical manner.

[0009] By employing the above technical solutions, airflow inside the flange can be prevented, thus extending its service life and avoiding chemical reactions between air and sulfuric acid that could damage the flange.

[0010] As a further improvement to the above solution, the number of threaded holes is set to six, and the six threaded holes are opened in a circumferential row on the top of the fixing block. The number of connecting grooves is set to three, and the three connecting grooves are opened in a circumferential row on the top of the fixing block. The number of sealing rings is set to two, and the number of protective sleeves is set to two.

[0011] The above technical solution facilitates the subsequent fixing of the connecting flange, improves the flexibility of the device, and makes disassembly easier in special circumstances.

[0012] As a further improvement to the above solution, the connecting mechanism includes a connecting flange, a groove fixedly connected to the top of the connecting flange, a rubber ring fixedly connected to the top of the groove, a slot fixedly connected to the top of the rubber ring, a connecting disc fixedly connected to the top of the slot, a connecting block fixedly connected to the top of the connecting disc, a threaded post fixedly connected to the top of the connecting block, and a connecting ring fixedly connected to the top of the threaded post.

[0013] The above technical solution enables the fixed flange and the connecting flange to be connected to each other, improving the overall continuity and tightness of the flange.

[0014] As a further improvement to the above solution, the number of connecting flanges is set to two, the number of grooves is set to two, the number of rubber rings is set to two, the number of slots is set to two, and the number of connecting discs is set to two.

[0015] The above technical solution can improve the fixing precision of the flange, prevent high levels of sulfuric acid from flowing into the flange and accelerating the flange corrosion rate.

[0016] As a further improvement to the above solution, the number of connecting blocks is set to three, and the three connecting blocks are fixedly connected inside the connecting groove in a circumferentially aligned manner. The number of threaded posts is set to six, and the six threaded posts are fixedly connected inside the threaded hole in a circumferentially aligned manner. The number of connecting rings is set to two.

[0017] The above technical solution enables the fixed flange and the connecting flange to be connected to each other, improving the overall continuity and tightness of the flange.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses fixed connecting flanges on both sides of a fixed pipe and a fixed connecting pipe at the bottom. When drainage is required, the plug at the bottom of the connecting pipe is opened. By setting up the flange, the flange is divided into a fixed flange and a connecting flange. The sealing gasket and rubber ring increase the contact area, making it difficult for gas to enter the flange. The insertion rings are connected to each other through the slots to increase the fixing effect.

[0019] This invention achieves a flange with strong sealing and high corrosion resistance by setting a connecting block to be fixedly connected inside the connecting groove, a threaded column to be fixedly connected inside the threaded hole, and a protective sleeve to be fixedly connected to the outside of the flange as a whole. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a side view of the structure of this utility model; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This utility model Figure 4 Schematic diagram of the structure at point A in the middle.

[0021] Explanation of key symbols: 1. Tee; 2. Connecting pipe; 3. Plug; 4. Fixing pipe; 5. Flange assembly; 6. Mounting mechanism; 601. Fixing flange; 602. Sealing gasket; 603. Washer ring; 604. Insert ring; 605. Fixing block; 606. Threaded hole; 607. Connecting groove; 608. Sealing ring; 609. Protective sleeve; 7. Connecting mechanism; 701. Connecting flange; 702. Groove; 703. Rubber ring; 704. Slot; 705. Connecting disc; 706. Connecting block; 707. Threaded post; 708. Connecting ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0023] Example: Please combine Figure 1-5 This embodiment of a corrosion-resistant flange for use with high-concentration acid and alkali media includes a tee pipe 1, an installation mechanism 6 and a connection mechanism 7. A connecting pipe 2 is fixedly connected to the bottom of the tee pipe 1, a plug 3 is fixedly connected to the bottom of the connecting pipe 2, a fixing pipe 4 is fixedly connected to the side of the connecting pipe 2, and a flange assembly 5 is fixedly connected to the top of the fixing pipe 4. The installation mechanism 6 is provided on the side of the flange assembly 5, and the connection mechanism 7 is provided on the side of the flange assembly 5. The mounting mechanism 6 includes a fixed flange 601, a sealing gasket 602 fixedly connected to the top of the fixed flange 601, a washer 603 fixedly connected to the top of the sealing gasket 602, a retaining ring 604 fixedly connected to the top of the washer 603, a fixing block 605 fixedly connected to the top of the retaining ring 604, a threaded hole 606 and a connecting groove 607 on the top of the fixing block 605, a sealing ring 608 fixedly connected to the top of the fixing block 605, and a protective sleeve 609 fixedly connected to the top of the sealing ring 608.

[0024] There are two fixed flanges 601, which are fixedly connected to the side of the fixed pipe 4 in a centrally symmetrical manner. There are two sealing gaskets 602, which are fixedly connected to the top of the fixed flanges 601 in a centrally symmetrical manner. There are two gaskets 603.

[0025] There are two insertion rings 604 and two fixing blocks 605. The two fixing blocks 605 are fixedly connected to the top of the insertion rings 604 in a centrally symmetrical manner.

[0026] There are six threaded holes 606 arranged in a circumferential row on the top of the fixing block 605. There are three connecting grooves 607 arranged in a circumferential row on the top of the fixing block 605. There are two sealing rings 608 and two protective sleeves 609.

[0027] The connecting mechanism 7 includes a connecting flange 701, a groove 702 fixedly connected to the top of the connecting flange 701, a rubber ring 703 fixedly connected to the top of the groove 702, a slot 704 fixedly connected to the top of the rubber ring 703, a connecting plate 705 fixedly connected to the top of the slot 704, a connecting block 706 fixedly connected to the top of the connecting plate 705, a threaded post 707 fixedly connected to the top of the connecting block 706, and a connecting ring 708 fixedly connected to the top of the threaded post 707.

[0028] There are two connecting flanges 701, two grooves 702, two rubber rings 703, two slots 704, and two connecting discs 705.

[0029] There are three connecting blocks 706, which are fixedly connected to the inside of the connecting groove 607 in a circumferential arrangement. There are six threaded posts 707, which are fixedly connected to the inside of the threaded hole 606 in a circumferential arrangement. There are two connecting rings 708.

[0030] The implementation principle of a corrosion-resistant flange for high-concentration acid and alkali media in this embodiment is as follows: A flange assembly 5 is fixedly connected to both sides of a fixed pipe 4, and a connecting pipe 2 is fixedly connected to the bottom. When drainage is required, the plug 3 fixedly connected to the bottom of the connecting pipe 2 is opened. The flange assembly 5 is divided into a fixed flange 601 and a connecting flange 701. The contact area is increased by a sealing gasket 602 and a rubber ring 703, making it difficult for gas to enter the flange assembly 5. The insertion rings 604 are connected to each other through slots 704 to increase the fixing effect. Finally, a connecting block 706 is fixedly connected inside the connecting groove 607, and a threaded post 707 is fixedly connected inside the threaded hole 606. A protective sleeve 609 is fixedly connected to the outside of the flange assembly 5. This results in a flange with strong sealing and high corrosion resistance.

[0031] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A corrosion-resistant flange for use in high-concentration acid and alkali media, characterized in that, The device includes a three-way pipe (1), an installation mechanism (6), and a connection mechanism (7). A connecting pipe (2) is fixedly connected to the bottom of the three-way pipe (1), a plug (3) is fixedly connected to the bottom of the connecting pipe (2), a fixing pipe (4) is fixedly connected to the side of the connecting pipe (2), a flange assembly (5) is fixedly connected to the top of the fixing pipe (4), an installation mechanism (6) is provided on the side of the flange assembly (5), and a connection mechanism (7) is provided on the side of the flange assembly (5). The installation mechanism (6) includes a fixed flange (601), a sealing gasket (602) is fixedly connected to the top of the fixed flange (601), a gasket (603) is fixedly connected to the top of the sealing gasket (602), a retaining ring (604) is fixedly connected to the top of the gasket (603), a fixing block (605) is fixedly connected to the top of the retaining ring (604), a threaded hole (606) is provided on the top of the fixing block (605), a connecting groove (607) is provided on the top of the fixing block (605), a sealing ring (608) is fixedly connected to the top of the fixing block (605), and a protective sleeve (609) is fixedly connected to the top of the sealing ring (608).

2. The corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 1, characterized in that: There are two fixed flanges (601), which are fixedly connected to the side of the fixed pipe (4) in a centrally symmetrical manner. There are two sealing gaskets (602), which are fixedly connected to the top of the fixed flanges (601) in a centrally symmetrical manner. There are two gaskets (603).

3. The corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 1, characterized in that: There are two insertion rings (604) and two fixing blocks (605). The two fixing blocks (605) are fixedly connected to the top of the insertion rings (604) in a centrally symmetrical manner.

4. The corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 1, characterized in that: The number of threaded holes (606) is six, and the six threaded holes (606) are arranged in a circumferential row on the top of the fixing block (605). The number of connecting grooves (607) is three, and the three connecting grooves (607) are arranged in a circumferential row on the top of the fixing block (605). The number of sealing rings (608) is two, and the number of protective sleeves (609) is two.

5. The corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 1, characterized in that: The connecting mechanism (7) includes a connecting flange (701), a groove (702) is fixedly connected to the top of the connecting flange (701), a rubber ring (703) is fixedly connected to the top of the groove (702), a slot (704) is fixedly connected to the top of the rubber ring (703), a connecting plate (705) is fixedly connected to the top of the slot (704), a connecting block (706) is fixedly connected to the top of the connecting plate (705), a threaded post (707) is fixedly connected to the top of the connecting block (706), and a connecting ring (708) is fixedly connected to the top of the threaded post (707).

6. The corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 5, characterized in that: The number of connecting flanges (701) is two, the number of grooves (702) is two, the number of rubber rings (703) is two, the number of slots (704) is two, and the number of connecting discs (705) is two.

7. A corrosion-resistant flange for use in high-concentration acid and alkali media as described in claim 5, characterized in that: The number of connecting blocks (706) is three, and the three connecting blocks (706) are fixedly connected inside the connecting groove (607) in a circumferential arrangement. The number of threaded posts (707) is six, and the six threaded posts (707) are fixedly connected inside the threaded hole (606) in a circumferential arrangement. The number of connecting rings (708) is two.

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