阅读说明：本技术 磁性液体智能安全阀 (Magnetic liquid intelligent safety valve ) 是由 于文娟 李德才 牛思放 杨洋 蒋亦伟 于 2020-12-17 设计创作，主要内容包括：磁性液体智能安全阀,属于机械工程阀门领域。该阀门利用磁性液体密封技术,转轴(1)、极靴(5、8)和电磁铁(7)形成磁回路将磁性液体(10)束缚在极齿(11)下,形成多个密封圈。通过控制电磁铁设定开启压力值,进行自动泄压。该阀门开启压力连续可调、结构简单,操作方便,可以避免设备内气体泄漏,防止安全阀因为受介质腐蚀而失效造成的严重后果,提高了设备的可靠性,并且拓宽了磁性液体的应用范围,也为安全阀提供了一种新的思路。(Magnetic liquid intelligence relief valve belongs to mechanical engineering valve field. The valve utilizes a magnetic liquid sealing technology, a rotating shaft (1), pole shoes (5, 8) and an electromagnet (7) form a magnetic loop, and magnetic liquid (10) is bound under pole teeth (11) to form a plurality of sealing rings. The opening pressure value is set by controlling the electromagnet, and automatic pressure relief is carried out. The valve has the advantages of continuously adjustable opening pressure, simple structure and convenient operation, can avoid gas leakage in equipment, prevents serious consequences caused by failure of the safety valve due to corrosion of a medium, improves the reliability of the equipment, widens the application range of magnetic liquid, and provides a new idea for the safety valve.)

1. The magnetic liquid intelligent safety valve comprises a rotating shaft valve cover (1), a first sealing ring (2), a hole frame (3), a valve body (4), a first pole shoe (5), a second sealing ring (6), an electromagnet (7), a second pole shoe (8), a third sealing ring (9), magnetic liquid (10) and pole teeth (11);

the method is characterized in that:

the rotating shaft valve cover (1) comprises a rotating shaft section and a valve cover, the valve cover (1) is mechanically connected with the valve body (4), a groove is formed in the position, in contact with the valve body (4), of the valve cover (1), the first sealing ring (2) is embedded into the groove and used for pressing the valve cover (1) and the valve body (4), and the magnetic liquid (10) can be filled by opening the valve cover (1);

one side of the valve body (4) is provided with a wire hole groove of the electromagnet (7), so that the electromagnet (7) is conveniently connected with an electromagnet controller; the upper part is provided with a pressure relief opening;

the hole frame (3) is clamped between the valve cover (1) and the first pole shoe (5), the positioning is carried out through an outer ring boss on the plane side of the first pole shoe (5), and the outer part of the hole frame (3) corresponds to a pressure relief opening;

the inner ring of the pole shoe is provided with a tooth groove to form pole teeth (11), a certain gap exists between the pole teeth (11) and the rotating shaft, the magnetic liquid (10) is arranged at the gap, the outer ring of the pole shoe is provided with a groove, and the sealing ring is embedded into the groove of the outer ring;

the electromagnets (7) are arranged between the pole shoes and positioned through inner ring bosses on the plane sides of the pole shoes, the electromagnets (7) are used as magnetic sources to form magnetic loops with the pole shoes and the rotating shaft (1), and magnetic liquid (10) is bound at each pole tooth (11) to form a magnetic liquid (10) sealing structure;

the magnetic liquid sealing structure is arranged between the pressure inlet and the pressure relief opening.

2. The magnetic liquid intelligent safety valve according to claim 1, characterized in that: the gap width is 0.1-0.5 mm, the pole tooth width is 0.2-1 mm, the number of pole teeth is 10-30, and the number of teeth of each pole shoe can be different.

3. The magnetic liquid intelligent safety valve according to claim 1, characterized in that: the number of the electromagnets is 1-2.

Technical Field

The invention relates to an intelligent magnetic liquid safety valve, and belongs to the field of mechanical engineering valves.

Background

The safety valve is one of valves, and the opening pressure is generally determined by the compression amount of a spring in a conventional adjustable safety valve, but in pressure vessels such as boilers and the like, due to leakage of steam, expansion with heat and contraction with cold can be adhered to the periphery of the structure of the safety valve, so that the conventional spring and other metals are corroded, the valve cannot be normally and automatically opened, and the danger hidden danger exists. In order to solve the problems, the invention designs the magnetic liquid intelligent safety valve by utilizing the magnetic liquid sealing principle. The magnetic liquid is a nanoscale functional material, and has the magnetism of a solid and the liquidity of liquid. The magnetic liquid seal has the advantages of zero leakage, long service life, simple structure, high reliability and no pollution, and the magnetic liquid seal structure is applied to the valve, so that on one hand, the preset opening pressure value can be realized, and the automatic pressure relief effect can be realized; on the other hand, the gas leakage in the equipment can be avoided, the serious consequence caused by the failure of the safety valve due to the corrosion of the medium is prevented, and the reliability of the equipment is improved. The invention widens the application range of the magnetic liquid and also provides a new idea for the safety valve.

Disclosure of Invention

The invention aims to provide an intelligent magnetic liquid safety valve which is continuously adjustable and can automatically release pressure by adjusting a preset opening pressure value of an electromagnet, and has the advantages of simple structure, convenience in operation and high reliability.

In order to achieve the purpose, the invention adopts the technical scheme that:

magnetic liquid intelligence relief valve includes: the rotary valve comprises a rotary shaft valve cover, a first sealing ring, a hole frame, a valve body, a first pole shoe, a second sealing ring, an electromagnet, a second pole shoe, a third sealing ring, magnetic liquid and pole teeth.

The rotating shaft valve cover is of a rotating shaft and valve cover integrated structure, the rotating shaft is used for forming a sealing structure with a pole shoe, an electromagnet and magnetic liquid, the valve cover is used for being connected with the valve body through threads, a groove is formed in the position, in contact with the valve body, of the valve cover, and the first sealing ring is embedded in the groove to tightly press the valve body. When the magnetic liquid is lost, the rotating shaft is lifted by rotating the valve cover of the rotating shaft, and the magnetic liquid is filled.

The inner rings of the pole shoes are all provided with tooth grooves to form a plurality of pole teeth, and certain gaps exist between the pole teeth and the rotating shaft. The electromagnet provides a magnetic source, forms a magnetic loop with the rotating shaft and the pole shoe, binds magnetic liquid at the pole teeth to form a plurality of O-shaped sealing rings to form a magnetic liquid sealing structure, changes the magnetic field intensity by adjusting the electromagnet, and further adjusts the pressure resistance of the sealing structure, thereby achieving the effects of presetting opening pressure and automatically relieving pressure. The outer rings of the pole shoes are provided with grooves, and the sealing rings are embedded into the grooves and tightly pressed with the valve body.

The side wall of the valve body is provided with a pressure relief opening and an electromagnet wire hole groove, the electromagnet is connected with an external controller through the wire hole groove, and the pressure relief opening is used for releasing pressure. When the preset opening pressure is reached, the gas penetrates through the sealing gap from the pressure inlet to reach the hole frame, the pressure is automatically released from the pressure release port, and after the pressure release is completed, the magnetic liquid is restored to the pole teeth for pressure resistance in the next stage due to the self-repairing function of the magnetic liquid. The outside of the pressure relief opening is provided with threads, and if the gas medium is harmful gas, the pressure relief opening can be connected with a pipeline or other devices to prevent environmental pollution.

The invention utilizes the magnetic liquid sealing principle, is combined with the safety valve, adjusts the opening pressure by adjusting the electromagnet, can be continuously adjustable, has simple structure, easy operation and wide range of opening pressure selection, not only achieves the effect of the safety valve, but also can seal the medium in the pressure container, avoids the corrosion of the common mechanical valve and ensures the safety of the pressure container.

Drawings

The invention is further explained in detail by the embodiments with the attached drawings:

FIG. 1 is a sectional view of a magnetic liquid intelligent safety valve;

FIG. 2 is an enlarged view of the magnetic liquid in the gap between the pole teeth and the rotating shaft;

fig. 3 is a structural sectional view of a magnetic liquid intelligent safety valve with two electromagnets.

Detailed Description

The magnetic liquid intelligent safety valve disclosed by the invention as shown in fig. 1 comprises a rotating shaft valve cover 1, a first sealing ring 2, a hole frame 3, a valve body 4, a first pole shoe 5, a second sealing ring 6, an electromagnet 7, a second pole shoe 8, a third sealing ring 9, magnetic liquid 10 and pole teeth 11.

The valve body 4 outward appearance is the column type, and inside is the cylinder type cavity, and the lower part is pressure inlet, and the entrance outer wall is seted up the screw thread, but the connection pressure equipment, and it has the osculum to open at 4 lateral walls of valve body of 7 departments of electro-magnet, for 7 electric wire hole grooves of electro-magnet, the 7 connection director of electro-magnet of being convenient for, pressure release mouth is seted up on upper portion, and pressure release mouth outer wall is equipped with the screw thread equally, and when gaseous medium is harmful gas, some devices can be connected, avoid. The rotating shaft valve cover 1 is of a rotating shaft and valve cover integrated structure, the valve cover 1 is in threaded connection with the valve body 4, a groove is formed in the contact position of the valve cover 1 and the valve body 4, and the first sealing ring 2 is embedded into the groove to ensure that the valve cover 1 is tightly pressed against the valve body 4.

The inner rings of the pole shoes are provided with tooth grooves to form a plurality of pole teeth 11, the outer circles of the pole shoes are provided with grooves, and the sealing rings are embedded in the grooves. The outer ring boss on the plane side of the pole shoe is used for positioning the hole frame 3, and the inner ring boss on the plane side of the pole shoe is used for positioning the electromagnet 7. The second pole shoe with the sealing ring, the electromagnet 7, the first pole shoe with the sealing ring and the hole frame 3 are sequentially arranged in the valve body 4, then the magnetic liquid 10 is filled, and finally the valve cover 1 with the sealing ring is screwed down.

The electromagnet 7 is used as a magnetic source, and forms a magnetic loop with the first pole shoe 5, the rotating shaft 1 and the second pole shoe 8, and the magnetic liquid 10 is bound in a gap between the pole teeth 11 of the pole shoes and the rotating shaft 1, as shown in fig. 2, to form a plurality of O-shaped sealing rings capable of bearing pressure. Different opening pressures can be preset by adjusting the magnetic field of the electromagnet 7, and the small magnetic field corresponds to the small opening pressure value and is continuously adjustable.

As shown in fig. 3, the two solenoid magnetic liquid intelligent safety valve structures have two wire hole slots on the valve body, and the solenoids are installed between the pole shoes to form two magnetic loops, so that the adjustable opening pressure range is larger. When the two electromagnets are adjusted to the minimum position of the magnetic field, the safety valve has the minimum opening pressure; when both electromagnets are adjusted to the magnetic field maximum position, the safety valve will have the maximum opening pressure. The required pressure is adjusted according to actual conditions.

The pole shoe and the rotating shaft valve cover 1 are made of materials with good magnetic conductivity, and the magnetic liquid 10 can be selected from magnetic liquids 10 with different base carrier liquids according to different working conditions. After the number of the pole teeth 11, the number of the electromagnets 7 and the materials of the pole shoes, the electromagnets 7 and the rotating shaft 1 are determined, the pressure value borne by the sealing structure of the magnetic liquid 10 under different magnetic fields, namely the opening pressure value can be calculated, once the pressure inlet reaches the opening pressure value, the sealing ring of the magnetic liquid 10 is broken, and gas is released from the pressure relief opening, so that the effect of automatic pressure relief is achieved. When the pressure is reduced, the magnetic liquid 10 returns to the pole teeth 11 again to form the sealing ring due to the self-repairing function of the magnetic liquid. When the magnetic liquid 10 is lost, the valve cover 1 is opened to fill the magnetic liquid 10.