CN106402400A - Anti-corrosion steam reaction kettle magnetic liquid sealing device - Google Patents

Abstract

The invention provides an anti-corrosion steam reaction kettle magnetic liquid sealing device and belongs to the field of mechanical engineering sealing. The problems that an existing magnetic liquid sealing device is short in sealing life and prone to being invalid when used on a reaction kettle due to the fact that organic solvent steam has a corrosive effect on magnetic liquid are solved. The anti-corrosion steam reaction kettle magnetic liquid sealing device is composed of a magnetic liquid sealing assembly, a movable ring (8), a liquid storage ring (2), a magnetic liquid replenishing device and a waste liquid recovery device. When the anti-corrosion steam reaction kettle magnetic liquid sealing device is applied to reaction kettle sealing, first magnetic liquid (6) in the liquid storage ring (2) can absorb the organic solvent steam diffusing in the direction of pole shoes, corrosion of the organic solvent steam to second magnetic liquid (16) on pole teeth is prevented, and the sealing life is prolonged; the magnetic liquid replenishing device on a shell can continuously replenish the invalid first magnetic liquid (6), and the effect of the first magnetic liquid for isolating an organic steam solvent is ensured; and the invalid first magnetic liquid (6) can be discharged from the waste liquid recovery device on the shell, so that long-term normal operation of the sealing device is ensured.

Description

Magnetic Liquid Sealing Device for Reactor Against Corrosion Vapor

technical field

The invention belongs to the field of mechanical engineering sealing and is suitable for magnetic liquid sealing of reaction kettles.

Background technique

Magnetic liquid seals are widely used due to their advantages of zero leakage, long life, and low friction. However, when used in a reactor, because the organic solvent vapor in the reactor has a corrosive effect on the magnetic liquid, the seal life of the magnetic liquid is short and easy to fail. Existing magnetic liquid sealing devices such as a magnetic liquid rotary sealing device disclosed in the application publication number CN 102182830 A, said device is provided with a labyrinth spiral sealing groove on the inner hole of the end cover, this design can not prevent harmful gas medium from affecting the magnetic Liquid corrosion, the effect is not good.

Contents of the invention

The technical problem to be solved by the present invention is that when the existing magnetic liquid sealing device is used on a reaction kettle, the organic solvent vapor in the reaction kettle has a corrosive effect on the magnetic liquid, resulting in a short service life and easy failure of the magnetic liquid seal. A magnetic liquid sealing device for a reaction kettle against corrosion vapor is proposed.

The technical solution adopted by the present invention to solve its technical problems is:

A magnetic liquid sealing device for a reaction kettle for anti-corrosion steam. Ring third sealing ring, moving ring, moving ring sealing ring, first pole piece sealing ring, first pole piece, second permanent magnet, second pole piece, second pole piece sealing ring, upper end cover, second magnetic liquid , rotary axis.

The connection between the various parts of the device: the first sealing ring of the liquid storage ring is installed in the groove of the bottom end surface of the liquid storage ring, the second sealing ring of the liquid storage ring and the third sealing ring of the liquid storage ring are installed in the In the outer circular groove of the liquid storage ring, the first permanent magnet is glued to the upper end surface of the liquid storage ring to form a liquid storage ring with a sealing ring and a permanent magnet; the first pole piece sealing ring is installed on the first pole piece The first pole shoe with sealing ring is formed in the outer circular groove of the shoe; the second pole shoe sealing ring is installed in the outer circular groove of the second pole shoe to form the second pole shoe with sealing ring; The ring sealing ring is installed in the inner circular groove of the moving ring to form a moving ring with a sealing ring.

The liquid storage ring with sealing ring and permanent magnet is put into the casing, and adjusted so that the through hole on the side of the liquid storage ring is aligned with the through hole on the casing; the liquid storage ring with sealing ring and permanent magnet is equipped with The casing is set on the rotary shaft; the moving ring with the sealing ring is put into the casing, and the fastening screw is adjusted to complete the positioning of the moving ring with the sealing ring; the first pole piece with the sealing ring, the second permanent magnet, The second pole piece with sealing ring is put into the casing in turn; the second magnetic liquid is injected; put into the upper end cover, and the positioning of the components is completed by using the threaded connection, and the positioning of the casing is completed by using the threaded connection on the flange of the casing.

Connect the well-sealed magnetic liquid replenishment device and waste liquid recovery device, use the magnetic liquid replenishment device to feed the first magnetic liquid into the sealing device; use the b1 and b2 holes to continuously feed low-temperature cooling liquid, and circulate the sealing device.

When the organic solvent vapor in the reaction kettle encounters the first magnetic liquid, it will be absorbed. The first magnetic liquid will lose its effectiveness after absorbing a certain amount of organic solvent vapor. After the failure, it can be discharged from the waste liquid recovery device on the shell and pass through the shell The magnetic liquid replenishing device on the top can replenish the first magnetic liquid into the sealing device to ensure that the second magnetic liquid will not come into contact with the organic solvent vapor that will make it invalid, and ensure the performance of the sealing device.

The first magnetic liquid and the second magnetic liquid have the same base carrier liquid and surfactant, and the magnetic powder content of the first magnetic liquid is 50% to 70% of the magnetic powder content of the second magnetic liquid; the moving ring extends into the first The liquid level of the magnetic liquid is 2-5 mm; the magnetic liquid sealing device is externally connected with a magnetic liquid replenishment device and a waste liquid recovery device with good sealing performance; into the tip of the first magnetic liquid.

Compared with the prior art, the present invention has the beneficial effect: when the magnetic liquid sealing device is applied to the sealing of the reaction kettle, the first magnetic liquid in the liquid storage ring can absorb the organic solvent vapor diffused toward the pole piece, preventing the organic solvent from The destructive effect of solvent vapor on the second magnetic liquid on the pole teeth prolongs the life and stability of the seal; a magnetic liquid replenishment device is connected to the shell, which can continuously replenish the first magnetic liquid that has failed due to organic solvent vapor corrosion, ensuring its isolation from organic matter. The role of steam solvent; the first permanent magnet is placed in the storage ring, the first magnetic liquid that has not failed will be adsorbed around the first permanent magnet, and the organic solvent vapor is isolated, and the first magnetic liquid that has failed can be removed from the waste liquid on the shell The recovery device discharges to ensure the long-term normal operation of the device; the liquid storage ring has grooves, which can use the cooling liquid to cool the liquid in the liquid storage ring. It solves the problem that when the magnetic liquid seal is used on the reaction kettle, the magnetic liquid becomes invalid after the organic solvent vapor in the reaction kettle touches the magnetic liquid, which leads to the failure of the magnetic liquid seal.

Description of drawings

Figure 1 The magnetic liquid sealing device of the reaction kettle against corrosive steam.

In Fig. 1: housing 1, liquid storage ring 2, first sealing ring 3 of liquid storage ring, second sealing ring 4 of liquid storage ring, first permanent magnet 5, first magnetic liquid 6, third sealing ring 7 of liquid storage ring , moving ring 8, moving ring sealing ring 9, first pole piece sealing ring 10, first pole piece 11, second permanent magnet 12, second pole piece 13, second pole piece sealing ring 14, upper end cover 15, first pole piece Two magnetic liquids 16, a rotary shaft 17.

detailed description

The present invention will be further described with accompanying drawing as specific embodiment:

The anti-corrosion steam reaction kettle magnetic liquid sealing device is shown in Figure 1: shell 1, liquid storage ring 2, first sealing ring 3 of liquid storage ring, second sealing ring 4 of liquid storage ring, first permanent magnet 5, first magnetic liquid 6. Liquid storage ring third sealing ring 7, moving ring 8, moving ring sealing ring 9, first pole shoe sealing ring 10, first pole shoe 11, second permanent magnet 12, second pole shoe 13, second pole Boot sealing ring 14, upper end cover 15, second magnetic liquid 16, rotary shaft 17.

The connection between the various parts of the device: the first sealing ring 3 of the liquid storage ring is installed in the bottom end surface groove of the liquid storage ring 2, the second sealing ring 4 of the liquid storage ring, the third sealing ring of the liquid storage ring The ring 7 is installed in the outer circular groove of the liquid storage ring 2, and the first permanent magnet 5 is glued to the upper end face of the liquid storage ring to form a liquid storage ring with a sealing ring and a permanent magnet; the first pole shoe seal The ring 10 is installed in the outer circular groove of the first pole shoe 11 to form the first pole shoe with a sealing ring; the second pole shoe sealing ring 14 is installed in the outer circular groove of the second pole shoe 13 to form a belt seal The second pole shoe of the ring; the moving ring sealing ring 9 is installed in the inner circular groove of the moving ring 8 to form a moving ring with a sealing ring.

The liquid storage ring with sealing ring and permanent magnet is put into the shell 1, and the through hole on the side of the liquid storage ring 2 is adjusted to align with the through hole on the shell 1; the storage ring with sealing ring and permanent magnet is equipped with The casing of the liquid ring is set on the rotary shaft 17; the moving ring with the sealing ring is put into the casing 1, and the fastening screw is adjusted to complete the positioning of the moving ring with the sealing ring; the first pole shoe with the sealing ring, The second permanent magnet 12 and the second pole shoe with a sealing ring are put into the shell 1 in turn; inject the second magnetic liquid 16; put it into the upper end cover 15, and use screw connection to complete the positioning of the components, and use the shell 1 flange The screw connection on the disc completes the positioning of the housing 1 .

Connect the well-sealed magnetic liquid replenishment device and the waste liquid recovery device, use the magnetic liquid replenishment device to feed the first magnetic liquid 6 into the sealing device; use the b1 and b2 holes to continuously feed low-temperature cooling liquid, and perform the sealing of the sealing device Circulation cooling.

When the organic solvent vapor in the reaction kettle encounters the first magnetic liquid 6, it will be absorbed, and the first magnetic liquid 6 will become invalid after absorbing a certain amount of organic solvent vapor, and can be discharged from the waste liquid recovery device on the shell 1 after failure The first magnetic liquid 6 can be replenished into the sealing device through the magnetic liquid replenishing device on the shell 1, so as to ensure that the second magnetic liquid 16 will not come into contact with the organic solvent vapor that will make it invalid, and ensure the performance of the sealing device.

The first magnetic liquid 6 and the second magnetic liquid 16 have the same base carrier liquid and surfactant, and the magnetic powder content of the first magnetic liquid 6 is 50% to 70% of the magnetic powder content of the second magnetic liquid 16; 8 extends into the liquid surface of the first magnetic liquid 6 by 2 to 5 mm; the magnetic liquid sealing device is externally connected with a magnetic liquid replenishment device and a waste liquid recovery device with good sealing performance; the first permanent magnet 5 adopts axial magnetization and The placement position is opposite to the tip of the moving ring 8 protruding into the first magnetic liquid 6 .

The pole piece and the rotary shaft 17 are selected from materials with good magnetic conductivity, such as electrician pure iron;

The permanent magnet is made of neodymium iron boron;

Types of magnetic liquids Select magnetic liquids with different base carrier liquids according to different use environments;

The liquid storage ring 2 is made of a corrosion-resistant material with good thermal conductivity, such as copper;

The movable ring 8 can be made of corrosion-resistant material such as pottery.

Claims (5)

1. anticorrosion steam reactor magnetic fluid seal device it is characterised in that：This device includes：Shell (1), liquid storage ring (2), liquid storage ring first sealing ring (3), liquid storage ring second sealing ring (4), the first permanent magnet (5), the first magnetic liquid (6), storage Pendular ring the 3rd sealing ring (7), rotating ring (8), seal ring of moving ring (9), the first pole shoe sealing ring (10), the first pole shoe (11), second Permanent magnet (12), the second pole shoe (13), the second pole shoe sealing ring (14), upper end cover (15), the second magnetic liquid (16), gyroaxis (17)；

Constitute the connection between each several part of this device：Described liquid storage ring first sealing ring (3) is arranged on liquid storage ring (2) bottom end In the groove of face, described liquid storage ring second sealing ring (4), liquid storage ring the 3rd sealing ring (7) are arranged on the outer round recessed of liquid storage ring (2) Interior, described first permanent magnet (5), with being adhesive in liquid storage ring upper surface, constitutes the liquid storage ring with sealing ring and permanent magnet；Described One pole shoe sealing ring (10) is arranged in the outer round recessed of the first pole shoe (11), constitutes the first pole shoe with sealing ring；Described second Pole shoe sealing ring (14) is arranged in the outer round recessed of the second pole shoe (13), constitutes the second pole shoe with sealing ring；Described rotating ring is close Seal (9) is arranged in the interior round recessed of rotating ring (8), constitutes the rotating ring with sealing ring；

The described liquid storage ring with sealing ring and permanent magnet is put in shell (1), and rotation adjustment makes logical on liquid storage ring (2) side Alignd with the through hole on shell (1) in hole；The described casing equipped with the liquid storage ring with sealing ring and permanent magnet is in gyroaxis (17) On；The described rotating ring with sealing ring is put in shell (1), adjusts the positioning that trip bolt completes the rotating ring with sealing ring；Described The first pole shoe with sealing ring, the second permanent magnet (12), the second pole shoe with sealing ring are sequentially placed in shell (1)；Injection institute State the second magnetic liquid (16)；Put into upper end cover (15), and using the threaded positioning completing assembly, using shell (1) method The threaded positioning completing shell (1) on blue disk.

Connect the good magnetic liquid supplementary device of sealing and waste liquid recovery apparatus, using magnetic liquid supplementary device to close Seal apparatus are passed through described first magnetic liquid (6)；Continuously it is passed through cryogenic liquid using b1, b2 hole, sealing device is followed Ring cools down.

2. according to claim 1 anticorrosion steam reactor magnetic fluid seal device it is characterised in that：

Described first magnetic liquid (6) is identical with surfactant with the second magnetic liquid (16) base load liquid, described first magnetic The particle content of liquid (6) is the 50%～70% of the particle content of the second magnetic liquid (16).

3. according to claim 1 anticorrosion steam reactor magnetic fluid seal device it is characterised in that：

Rotating ring (8) stretches into the first magnetic liquid (6) liquid level 2～5mm.

4. according to claim 1 anticorrosion steam reactor magnetic fluid seal device it is characterised in that：

Magnetic fluid seal device is externally connected to the good magnetic liquid supplementary device of sealing and waste liquid recovery apparatus.

5. according to claim 1 anticorrosion steam reactor magnetic fluid seal device it is characterised in that：

Using axial charging and placement location is right against rotating ring (8) and stretches into the first magnetic liquid (6) described first permanent magnet (5) Most advanced and sophisticated.