CN209277941U - A kind of permanent magnet crystallization prevention device and tunnel drainage system - Google Patents

Abstract

The utility model provides a permanent magnet anti-crystallization device and a tunnel drainage system, including a horizontal drainage pipe, a circular blind pipe and a central drainage pipe. And through the set horizontal drainage pipe to the central drainage pipe, and then out of the tunnel. A permanent magnet is installed on the horizontal drainage pipe and fixed by a fixing frame to form a permanent magnet anti-crystallization device. The permanent magnet adopts strontium ferrite ceramic material, which can maintain magnetism for a long time in extreme environments. Through the magnetic field generated by the permanent magnet, the movement of anions and cations in the water in the horizontal drainage pipe is in a discrete state, preventing the formation of precipitation on the inner wall of the drainage pipe, thereby reducing the generation of crystallization. The utility model has simple structure and good effect, and the permanent magnet is installed once, which can significantly reduce the cost with the passage of time, and has no influence on the surrounding environment and tunnel structure, has better economic benefits, and is suitable for popularization and application.

Description

A permanent magnet anti-crystallization device and tunnel drainage system

technical field

The utility model relates to the application field of tunnel engineering, in particular to a permanent magnet anti-crystallization device and a tunnel drainage system.

Background technique

A large number of engineering practices and on-site investigations have shown that when the tunnel project passes through the limestone area, because the rock area is rich in carbonates and calcium salts, it is easy to form insoluble calcium carbonate crystals in the tunnel drainage pipes, block the drainage pipes, and affect the tunnel structure. Life and safety, and a lot of practice shows that the crystallization in the tunnel drainage pipe is mainly concentrated at the end of the horizontal drainage pipe. If the drainage is not smooth for a long time, a large water pressure will be formed in the drainage pipe to act on the drainage pipe and the surrounding rock. When the water seeps in the cracks of the surrounding rock, it will cause structural damage, which will have a huge impact on the structural stress of the tunnel and seriously affect the tunnel. The safety and longevity of the project, while the repair will also cause huge economic losses and seriously affect the smooth flow of traffic. Now most of the maintenance costs of tunnels are mainly concentrated on the removal of sediment in the drainage system. At present, there are mainly two domestic methods for removing crystals in tunnel drainage pipes, the physical method of high-pressure pulse and the chemical method of adding slow-release rod neutralization method, but these methods will cause certain damage to the drainage pipe and the surrounding hydrological environment. Therefore, according to the current situation, it is urgent to study a comprehensive and effective measure to deal with the crystallization in the tunnel drainage pipe.

Utility model content

The purpose of the utility model is to provide a permanent magnet anti-crystallization device and a tunnel drainage system, which can prevent crystallization in the tunnel drainage pipe through the magnetic field generated by the permanent magnet, so as to achieve the purpose of economy and environmental protection.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a permanent magnet anti-crystallization device, including a first permanent magnet and a second permanent magnet fixed on both sides of the drainpipe, and the first permanent magnet and the second permanent magnet The opposite polar faces of the magnets are arranged opposite to each other.

Further, the first permanent magnet and the second permanent magnet are arranged in an arc shape, and the arc-shaped surfaces of the first permanent magnet and the second permanent magnet are attached to the outer wall of the drain pipe.

Further, the first permanent magnet and the second permanent magnet are fixed on the drainpipe through a fixing frame, and the fixing frame includes a first fixing frame and a second fixing frame that are detachably connected, and each fixing frame includes a The card slot and the extension parts located on both sides of the card slot, the extension part is provided with screw holes, and the first fixing frame and the second fixing frame are fixed on the drainpipe by connecting the screw rods in the screw holes.

Further, the locking groove of the fixing frame is set in an arc shape matching the permanent magnet, so that the fixing frame catches the permanent magnet to complete the fixing of the permanent magnet.

Further, both the first permanent magnet and the second permanent magnet are strontium ferrite ceramic permanent magnets.

A tunnel drainage system, comprising a horizontal drainage pipe, on which several permanent magnet anti-crystallization devices are sleeved, and the water inlets at both ends of the horizontal drainage pipe are connected to a circular dead pipe, and the circular blind pipe is along the inner wall of the tunnel. It is arranged circumferentially, and the pipe wall of the circumferential blind pipe is provided with tunnel leakage water inlet holes.

Further, it also includes a central drainage pipe arranged along the direction of the tunnel, the central drainage pipe is intersected with the horizontal drainage pipe, and the central drainage pipe is connected to the left drainage pipe and the right drainage pipe of the horizontal drainage pipe through the water inlet holes arranged on both sides.

Further, the permanent magnet anti-crystallization devices are respectively arranged in the middle of the left drain pipe and the right drain pipe.

Further, there are several horizontal drainage pipes, and several horizontal drainage pipes are connected to the central drainage pipe at equal intervals along the tunnel direction.

Compared with the prior art, the utility model has at least the following beneficial effects:

The utility model is an anti-crystallization device of a permanent magnet. The magnetic field generated by the permanent magnet makes the negative and positive ions in the water in a disordered state, and the magnetized water can effectively inhibit the crystallization of calcium carbonate, and has the advantages of environmental protection and simple structure.

Further, the permanent magnet is arranged in an arc shape, so that the permanent magnet can be attached to the outer wall of the drainpipe, which can increase the contact area between the permanent magnet and the drainpipe. On the one hand, the strength of the magnetic field is improved, and on the other hand, it is also convenient Fixing of permanent magnets.

Further, the fixing frame can support and fix the permanent magnet by setting the card slot, and setting the card slot as an arc shape matching the permanent magnet can improve the fixing effect on the permanent magnet; part, the two fixing frames can be connected and fixed together, so as to realize fixing the permanent magnet on both sides of the drain pipe.

In the tunnel drainage system of the present utility model, the set circular blind pipes collect the tunnel seepage water through the set tunnel leakage water inlet holes, and the tunnel seepage water collected by the circular blind pipes is passed through the set horizontal drainage pipes. Water leaks out of the tunnel. By installing a permanent magnet anti-crystallization device on the horizontal drainage pipe, using the magnetic field generated by the permanent magnet to make the anions and cations in the water in a disordered state, the magnetized water can effectively inhibit the crystallization of calcium carbonate, thus effectively solving the problem of crystallization in the tunnel drainage pipe The utility model is simple in structure, convenient to use and easy to realize, and uses the pure physical characteristics of the magnetic field to reduce the content of minerals from the source, thereby greatly reducing the crystal content, and is more conducive to smooth drainage, with obvious effects and low cost, and is suitable for popularization and application; Compared with the traditional chemical method, no chemical pollution is produced, and the damage to the hydrological system is avoided.

Further, by setting the central drainage pipe, the central drainage pipe is connected to the horizontal drainage pipe so that the tunnel seepage water collected in the ring to the blind pipe can be discharged out of the tunnel.

Further, the horizontal drainage pipe is cross-connected with the central drainage pipe, which can discharge the tunnel seepage water collected on both sides of the horizontal drainage pipe at the same time, which significantly improves the drainage efficiency.

Furthermore, the permanent magnet anti-crystallization devices are respectively arranged in the middle of the left drain pipe and the right drain pipe, and the generated magnetic field can cover a larger area of the horizontal drain pipe, improving the anti-crystallization effect.

Furthermore, by arranging multiple groups of horizontal drainage pipes in the tunnel according to the specific conditions of the tunnel, the leakage water in the tunnel can be distributed and collected, so that the maximum amount of leakage water in the tunnel can be discharged out of the tunnel.

Description of drawings

Fig. 1 is the structural representation of tunnel drainage system in the utility model embodiment;

Fig. 2 is the schematic diagram of the left drainage pipe and the permanent magnet in the utility model embodiment;

Fig. 3 is a cross-sectional view of a horizontal drainage pipe in an embodiment of the present invention;

Fig. 4 is the dimension schematic diagram of permanent magnet in the utility model embodiment;

Fig. 5 is the schematic diagram of the assembly of the permanent magnet and the fixed frame in the embodiment of the utility model;

Fig. 6 is the principle diagram of magnetic field action in the utility model embodiment;

In the figure: 1. fixed frame, 2. first permanent magnet, 3. horizontal drainage pipe, 4. screw and nut 5. second permanent magnet, 6. central drainage pipe, 7. circular blind pipe, 8. magnetic field lines , 101, the first fixed mount, 102, the second fixed mount, 301, the left drain pipe, 302, the right drain pipe, 401, the nut, 402, the screw rod.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the tunnel drainage system of the present utility model includes a horizontal drainage pipe 3, a central drainage pipe 6 and a circular blind pipe 7, and the water inlets at both ends of the horizontal drainage pipe 3 are connected to the two outlets of the circular blind pipe 7. The water outlet and the middle part of the horizontal drain pipe 3 communicate with the central drain pipe 6, so that the seepage water in the tunnel is collected through the annular blind pipe 7, and collected into the horizontal drain pipe 3, and then discharged from the tunnel through the central drain pipe 6. The horizontal drain pipe 3 is provided with a permanent magnet, and the permanent magnet is fixed on the horizontal drain pipe 3 through a fixing frame.

As shown in Figure 2, the permanent magnet comprises a first permanent magnet 2 and a second permanent magnet 5, and the first permanent magnet 2 and the second permanent magnet 5 are fixed on both sides of the horizontal drain pipe 3, and are fixed by the fixing shown in Figure 3 The frame 1 is fixed on the upper and lower sides of the horizontal drain pipe 3; the fixed frame 1 includes a first fixed frame 101 and a second fixed frame 102, and the two fixed frames are arranged in an arc shape suitable for the permanent magnet, and the two fixed frames Both include a card slot for placing a permanent magnet and extensions on both sides of the card slot. The extension is provided with holes for passing through the screw 402. One end of the screw 402 is clamped on one of the fixing brackets, and the other end passes through the other fixing bracket. frame and connect the nut 401, so that by tightening the nut 401, the two fixed frames are fixedly connected as a whole, and fastened on the horizontal drain pipe 3; the connection of the two fixed frames and the outer wall of the drain pipe form a closed space, which can to protect the permanent magnet.

As shown in Figure 5, the thickness of the slot of the fixed frame 1 is less than the thickness of the two sides of the slot, so that the two sides form a blocking portion for the slot; and the length of the slot matches the length of the permanent magnet, so that the permanent magnet It can just be embedded in the slot, and the permanent magnets in the slot are limited in the slot by the blocking parts on both sides; the first permanent magnet 2 and the second permanent magnet 5 are arranged in an arc shape, and the arc is set to be in line with the transverse direction. The drainage pipe 3 has a considerable radian, so that the arc-shaped surface of the permanent magnet fits the outer wall of the drainage pipe, so that the first permanent magnet 2 and the second permanent magnet 5 can just be stuck on both sides of the horizontal drainage pipe 3, and then fixed by the first The frame 101 and the second fixing frame 102 fix the two permanent magnets on the horizontal drain pipe 3 .

When assembling, the heteropolar faces of the first permanent magnet 2 and the second permanent magnet 5 are oppositely arranged, and the first permanent magnet 2 and the second permanent magnet 5 all adopt strontium ferrite ceramic permanent magnets, which can be used under various unfavorable conditions. remain permanently magnetic. The first permanent magnet 2 and the second permanent magnet 5 are respectively placed on the upper and lower parts of the horizontal drain pipe 3, thereby generating a magnetic field passing through the horizontal drain pipe 3, and the generated magnetic field keeps the anions and cations in the water in a discrete state, so that the anions and cations cannot flow smoothly. Combining thus delays the generation of crystallization, changes the sedimentation structure, and achieves the purpose of preventing the generation of crystallization and blockage in the horizontal drainage pipe 3 .

In a preferred embodiment of the present utility model, in order to be able to fit the fixed frame 1, the permanent magnet has specific dimensions as shown in Figure 4, the arc-shaped permanent magnet has a length of 20cm, a thickness of 2cm, and a width of 8cm.

As shown in Figure 1, the horizontal drainpipe 3 comprises a left drainpipe 301 and a right drainpipe 302, and the water inlet at the left end of the left drainpipe 301 communicates with a water outlet of the blind pipe 7, and the right end communicates with the central drainpipe 6; the right drainpipe The water inlet at the right end of 302 is connected to another water outlet of the blind pipe 7, and the left end is connected to the central drainage pipe 6;

The annular blind pipe 7 is arranged circumferentially along the inner wall of the tunnel, and the pipe wall of the annular blind pipe 7 is provided with a number of tunnel leakage water inlet holes for collecting tunnel leakage water, and the collected tunnel leakage water passes through the annular blind pipe. The pipe 7 flows into the left drain pipe 301 and the right drain pipe 302 at the bottom of the tunnel, and exits the tunnel through the central drain pipe 6.

In a preferred embodiment of the present utility model, the left drain pipe 301 and the right drain pipe 302 are respectively connected to two water outlets of the blind pipe 7 through an elbow joint.

In a preferred embodiment of the present utility model, the horizontal drainage pipes 3 are arranged at equal intervals along the direction of the tunnel, and are respectively connected to the central drainage pipe 6, and the joints are sealed to prevent water leakage. The central drainage pipe 6 is laid along the slope of the tunnel so that the seepage water in the tunnel can be discharged smoothly.

According to empirical research, it is found that the blockage of the drainage pipe is likely to occur in the horizontal drainage pipe, so the permanent magnet anti-crystallization device is arranged in the middle of the left and right horizontal drainage pipes 3, and there are multiple permanent magnet anti-crystallization devices, as shown in Figure 1. To improve the anti-crystallization effect.

Through the connection between the screw rod 402 and the nut 401, the first fixing frame 101 and the second fixing frame 102 can be closely attached to achieve the function of protecting and fixing the permanent magnet.

The principle of the permanent magnet anti-crystallization device is shown in Figure 6. Under the action of the magnetic field line 8, the anions and cations in the water cannot be smoothly combined, and the anion and cations are in a discrete state, so that they cannot be smoothly combined to form precipitation, so as to prevent crystallization of the drainpipe.

The technical solutions provided by the embodiments of the present invention have been introduced in detail above. In this paper, specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the present invention. The principle of the embodiment; at the same time, for those of ordinary skill in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and scope of application. In summary, the contents of this specification should not be interpreted as Utility model restrictions.

Claims (8)

1. A permanent magnet anti-crystallization device is characterized in that, comprises the first permanent magnet (2) and the second permanent magnet (5) that are fixed on both sides of drainpipe, and the first permanent magnet (2) and the second permanent magnet The heteropolar faces of the magnet (5) are arranged oppositely; The first permanent magnet (2) and the second permanent magnet (5) are fixed on the drainpipe through a fixed frame (1), and the fixed frame (1) includes a first fixed frame (101) and a second fixed frame detachably connected Frame (102), each fixed frame (1) all comprises the draw-in groove that places permanent magnet and the extension part that is positioned at both sides of draw-in groove, and extension part is provided with screw hole, realizes the first fixed frame by connecting screw rod in screw hole (101) and the second fixed frame (102) are fixed on the drainpipe. 2. a kind of permanent magnet anti-crystallization device as claimed in claim 1, is characterized in that, described first permanent magnet (2) and second permanent magnet (5) all adopt arc-shaped arrangement, and first permanent magnet ( 2) and the arc surface of the second permanent magnet (5) is attached to the outer wall of the drain pipe. 3. A kind of permanent magnet anti-crystallization device as claimed in claim 2, it is characterized in that, the draw-in groove of fixed frame (1) is set to the arc shape that matches with permanent magnet, makes fixed frame (1) clamp permanent magnet Finish fixing the permanent magnet. 4. A permanent magnet anti-crystallization device according to any one of claims 1 to 3, wherein the first permanent magnet and the second permanent magnet are both strontium ferrite ceramic permanent magnets. 5. A tunnel drainage system, characterized in that it comprises a horizontal drainage pipe (3), and the horizontal drainage pipe (3) is provided with several permanent magnet anti-crystallization devices according to any one of claims 1 to 4, and the lateral The water inlets at both ends of the drainage pipe (3) are connected to the annular blind pipe (7), and the annular blind pipe (7) is arranged circumferentially along the inner wall of the tunnel, and the pipe wall of the annular blind pipe (7) is provided with a tunnel Leaking water into the water hole. 6. A kind of tunnel drainage system as claimed in claim 5, characterized in that, it also includes a central drainage pipe (6) arranged along the direction of the tunnel, the central drainage pipe (6) intersects with the horizontal drainage pipe (3), and the central drainage pipe (6) The drainpipe (6) communicates with the left drainpipe (301) and the right drainpipe (302) of the horizontal drainpipe (3) through water inlet holes arranged on both sides. 7. The tunnel drainage system according to claim 6, characterized in that, the permanent magnet anti-crystallization devices are respectively arranged in the middle of the left drainage pipe (301) and the right drainage pipe (302). 8. A kind of tunnel drainage system as claimed in claim 6, characterized in that, there are several horizontal drainage pipes (3), and several horizontal drainage pipes (3) are connected to the central drainage pipe ( 6).