CN109707894B - Halbach magnetic moment array transmission self-sealing main valve - Google Patents

Abstract

The invention discloses a halbach magnetic moment array transmission self-sealing main valve, which comprises a bearing, wherein a bearing frame of the bearing is fixed on a pipeline; a worm wheel driven by a worm is arranged close to the outer ring of the bearing, a plurality of first permanent magnets are fixed on the inner ring of the worm wheel, and the first permanent magnets are arranged in a halbach magnetic matrix mode; a valve disc is arranged close to the bearing inner ring, a plurality of second permanent magnets are fixed on the valve disc outer ring, the second permanent magnets are arranged according to a halbach magnetic moment array mode, and the second permanent magnets and the first permanent magnets form a magnetic transmission structure; a runner hole is formed in the valve disc; on the downstream side of the pipeline, a sealing gasket is arranged on the valve disc, a contact backing plate is arranged in parallel adjacent to the sealing gasket, and the sealing gasket is in fit sealing with the contact backing plate under the condition of sufficient water pressure. The device has simple structure and good sealing performance, and can basically realize friction-free transmission among structures, thereby prolonging the service life of the valve.

Description

A Halbeck magnetic matrix transmission self-sealing main valve

Technical field

The invention relates to the field of valves, in particular to a Halbach magnetic matrix transmission self-sealing main valve.

Background technique

Valve is an important control component in the fluid transportation system. It has the functions of cutting off, regulating, diversion, preventing reverse flow, stabilizing pressure, diverting flow or overflow pressure relief. Existing valves are mainly used to cut off, regulate, check and ensure project safety. They are generally divided into automatic valves and driven valves. Among them, driven valves (gate valves, stop valves, ball valves, butterfly valves, etc.) rely on the driving device to adjust the pressure of the medium in the pipeline. , flow and direction. In valve technology, self-sealing valves occupy an indispensable position, allowing fluid pipelines to provide precise control processes for fluid transportation; automatic valves rely on the automatic control system to realize the opening and closing of the valve action, thereby realizing the valve's control of the fluid. control.

However, the existing commonly used valves have obvious shortcomings in the drive structure. The structure is complex and the control process is difficult. Secondly, the pipeline at the valve is not tightly sealed and the sealing pressure is insufficient, which presents obvious hidden dangers. The problems can be mainly attributed to the following aspects: 1) The existing valve sealing structure is complex and difficult to manufacture, resulting in higher costs; 2) The external driving part of the valve is large, which is not conducive to later inspection and maintenance; 3) The valve The middle part of the transmission structure has rigid direct contact, which is prone to friction and wear, and the valve life is short. Contents of the invention

The technical problem to be solved by the present invention is to provide a Halbeck magnetic matrix transmission self-sealing main valve, which solves the problems of the existing valve sealing structure being too complicated and the like. This device utilizes the characteristics of the water flow at the pressure pipe valve. The water pressure in the incoming direction is larger and the water pressure in the outlet direction is smaller, allowing the water flow to achieve self-sealing when the valve channel is closed, and has a good sealing effect. At the same time, it solves the problem that some structures in the main valve are prone to friction and wear.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a Halbach magnetic matrix transmission self-sealing main valve, which includes a bearing composed of bearing balls and a bearing frame, and the bearing frame is fixed to the pipeline; The outer ring of the bearing is provided with a worm gear driven by a worm, and the inner ring of the worm gear is fixed with a number of first permanent magnets. The first permanent magnets are arranged in a Halbeck magnetic matrix; a valve disc is provided adjacent to the inner ring of the bearing. A number of second permanent magnets are fixed on the outer ring of the valve disc. The second permanent magnets are arranged in a Halbeck magnetic matrix, and the second permanent magnets and the first permanent magnets form a magnetic transmission structure;

There is a flow channel hole on the valve disc. When the flow rate of the self-sealing main valve is fully opened, the flow channel hole is just connected with the pipeline; on the downstream side of the pipeline, a sealing gasket is provided on the valve disc, adjacent to The sealing gasket is provided with a contact pad in parallel; when the water pressure is sufficient, the sealing gasket and the contact pad are tightly sealed; the first permanent magnet, bearing balls, bearing frame, contact pad and worm gear in the main valve are fixed In the same linkage part, the second permanent magnet, valve disc and sealing gasket are fixed in another linkage part; the first permanent magnet and the second permanent magnet adopt the same synonymous magnetic pole arrangement of the Halbeck magnetic matrix, and the first permanent magnet When rotating, the second permanent magnet rotates together with it.

Furthermore, the pipes on the upstream side or downstream side are connected through flanges.

Furthermore, a gasket for sealing is provided at the flange connection.

Further, the flange is fixed by bolts.

Further, the bearing frame is fixed to the pipe by welding.

Further, the first permanent magnet, bearing balls, bearing frame, contact pad and worm gear in the main valve are fixed in the same linkage part, and the second permanent magnet, valve disc and sealing gasket are fixed in another linkage part.

Compared with the existing technology, the beneficial effects of the present invention are: 1) The rotating mechanism of the device adopts rolling bearings, which has a compact structure, low friction resistance, low power consumption, and is easy to start opening and closing the valve. 2) In this device, the arrangement structure of the first permanent magnet in the outer ring and the second permanent magnet in the inner ring uses the Halbach magnetic matrix permanent magnet principle and technology, which can maximize the use of the magnetic energy of the permanent magnets. 3) This device has designed a permanent magnet magnetic transmission structure in the transmission structure, that is, the outer ring permanent magnet drives the inner ring permanent magnet to run. The structure is simple, has few components, is easy to install, and can basically realize frictionless transmission between structures. , thereby increasing the service life of the valve. 4) The two specially designed contact gaskets in this device make full use of water pressure to achieve close fit and separation, forming a self-sealing structure with good self-sealing and leak-proof performance.

Description of the drawings

Figure 1 is a front cross-sectional view of the Halbeck magnetic matrix drive self-sealing main valve of this device.

Figure 2 is a side cross-sectional view of the Halbeck magnetic matrix drive self-sealing main valve of this device.

In the picture: 1-first permanent magnet; 2-bearing ball; 3-second permanent magnet; 4-pipe; 5-valve disc; 6-flange; 7-gasket; 8-bearing frame; 9-seal Pad; 10-contact pad; 11-bolt; 13-flow channel hole; 14-bearing; 15-worm gear; 16-worm.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

The components of the device of the invention include: first permanent magnet 1, bearing ball 2, second permanent magnet 3; pipe 4, valve disc 5, flange 6, gasket 7, bearing frame 8, sealing gasket 9, contact pad 10. Bolt 11, flow hole 13, bearing 14, worm gear 15 and worm 16. The function of each component is detailed as follows:

1. The first permanent magnet in the outer ring: it is composed of multiple permanent magnets arranged in a Halbeck magnetic matrix on the outer ring, and forms a magnetic transmission structure with the second permanent magnet 3 in the inner ring;

2. Bearing ball: It is one of the components of the bearing 14 in this device;

3. The second permanent magnet in the inner ring: it is located on the valve disc 5. It is composed of multiple permanent magnets arranged in a Halbach magnetic matrix on the outer ring, and forms a magnetic transmission structure with the first permanent magnet 1;

4. Pipeline: The water flow flows along the pipe 4 in the direction shown in Figure 1, which plays a role in restricting the water flow;

5. Valve disc: It is the main structure that blocks the flow of water, and has a flow channel hole 13 on this structure;

6. Flange plate: It and other flange plates together form a flange plate combination, which is used for the flange connection between the main body of the device and the pipe 4;

7. Gasket: It is located between the flange plates 6 and is used to seal the flange;

8. Bearing frame: It is used to support bearing 14;

9. Sealing gasket: When there is sufficient water pressure, it comes into contact with the contact pad 10 to form a seal;

10. Contact pad: it contacts and fits the sealing pad 9 when there is sufficient water pressure to form a seal;

11. Bolts: They are used to connect and fix the flanges 6;

13. Flow channel hole: It is located on the valve disc 5 and is used to flow fluid when the valve is opened. The size matches the pipe 4;

14. Bearing: It is installed on the pipe 4 and used to support the worm gear 15;

15. Worm gear: It and the worm 16 together form a worm transmission system, and the first permanent magnet 1 of the outer ring is installed in this structure;

16. Worm: It and the worm gear 15 together constitute the worm transmission and are the active parts in the system.

The first permanent magnet 1, bearing ball 2, bearing frame 8, contact pad 10 and worm gear 15 in this main valve are fixed in the same linkage part, and the second permanent magnet 3, valve disc 5 and sealing gasket 9 are fixed in another In the linkage part, the entire device is fixed in the cross section of the pipe 4 by the flange 6. One of the pair of flange plate combinations includes two flange plates, a gasket 7 is added between the two flange plates, and the bolts 11 pass through the three flanges to tighten them.

The working principle of the device of the present invention: Utilizing the magnetic transmission principle of mutual attraction of opposite-name magnetic poles, the main water conservancy valve is opened and closed in a non-contact manner, and then combined with the actual working conditions, the main water conservancy valve uses the characteristics of high inflow pressure and low outlet pressure. It achieves self-sealing of water flow when the valve is closed, greatly simplifying the valve structure and reducing design costs.

When the hydropower station needs to cut off the flow from the main valve, the main valve is controlled to cut off the flow. When this device cuts off the water flow, it uses the prime mover to drive the worm 16 to rotate, and the helical teeth on the worm 16 mesh with the gears on the worm gear 15. The first permanent magnet 1 arranged according to Halbeck is arranged on the worm gear 15. Driven by 16, the first permanent magnet 1 can rotate. The bearing 14 includes a bearing frame 8 and a bearing ball 2 for support. The bearing 14 is installed on the pipe 4 and can be welded for connection. That is, the end of the bearing frame 8 close to the pipe 4 is welded to the pipe 4. The bearing ball 2 can be connected to the bearing frame. 8 rotates in the middle and supports the worm gear 15 at the same time. Because the first permanent magnet 1 and the second permanent magnet 3 adopt the same Halbach magnetic matrix and have different magnetic pole arrangements, when the first permanent magnet 1 rotates, the second permanent magnet 3 rotates together with it. The valve disc 5 is provided with a flow channel hole 13 that matches the size of the pipe 4. Under the action of the second permanent magnet 3, the flow channel hole 13 moves upward to close the pipe 4. Because the water pressure on the inflow direction side of the water conservancy main valve is greater and the pressure on the outlet side is smaller, the valve disc 5 automatically seals the gap under the action of the pressure difference. The greater the pressure difference, the better the effect. The sealing gasket 9 and the contact pad 10 are made of flexible materials, which can avoid rigid contact to a large extent.

Where the water conservancy main valve needs to be installed, the pipeline 4 needs to be cut off, the flange 6 is welded, and the water conservancy main valve is connected through bolts 11 and gaskets 7. In addition, the permanent magnets and other structures located inside the pipe 4 need to be installed by cutting the main water valve in the middle and then welding. The valve disc 5 and other structures are supported by the magnetic force between the first permanent magnet 1 and the second permanent magnet 3 Just keep it.

Claims (5)

1. The halbach magnetic moment array transmission self-sealing main valve is characterized by comprising a bearing (14) consisting of bearing balls (2) and a bearing bracket (8), wherein the bearing bracket (8) is fixed on a pipeline (4); a worm wheel (15) driven by a worm (16) is arranged close to the outer ring of the bearing (14), a plurality of first permanent magnets (1) are fixed on the inner ring of the worm wheel (15), and the first permanent magnets (1) are arranged in a halbach magnetic matrix mode; a valve disc (5) is arranged close to the inner ring of the bearing (14), a plurality of second permanent magnets (3) are fixed on the outer ring of the valve disc (5), the second permanent magnets (3) are arranged according to a halbach magnetic moment array mode, and the second permanent magnets (3) and the first permanent magnets (1) form a magnetic transmission structure; a flow passage hole (13) is formed in the valve disc (5), and when the self-sealing main valve is fully opened, the flow passage hole (13) is just communicated with the pipeline (4); on the downstream side of the pipeline (4), a sealing gasket (9) is arranged on the valve disc (5), and a contact backing plate (10) is arranged in parallel adjacent to the sealing gasket (9); under the condition of sufficient water pressure, the sealing gasket (9) is adhered and sealed with the contact base plate (10); the first permanent magnet (1), the bearing ball (2), the bearing bracket (8), the contact base plate (10) and the worm wheel (15) in the main valve are fixed on the same linkage part, and the second permanent magnet (3), the valve disc (5) and the sealing gasket (9) are fixed on the other linkage part; the first permanent magnet (1) and the second permanent magnet (3) are arranged by adopting different-name magnetic poles of the same halbach magnetic matrix, and when the first permanent magnet (1) rotates, the second permanent magnet (3) rotates together.

2. A halbach moment array actuated self-sealing main valve as claimed in claim 1, wherein the pipes (4) on the upstream side or downstream side are connected by means of flanges (6).

3. A halbach moment array transmission self-sealing main valve according to claim 2, characterized in that the joint of the flange (6) is provided with a gasket (7) for sealing.

4. A halbach moment array driven self-sealing main valve according to claim 2, wherein the flange (6) is fixed by bolts (11).

5. A halbach moment array driven self-sealing main valve as in claim 1, wherein the bearing bracket (8) is secured to the pipe (4) by welding.