A crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration

Abstract

The utility model provides a crystallization scale prevention device based on electromagnetic vibration and mechanical water flow acceleration. Through the combination of electromagnetic vibration and mechanical water flow acceleration, tunnel drainage annular blind pipes, tunnel drainage longitudinal blind pipes, tunnel drainage transverse blind pipes, central drainage ditches and inspection wells are configured in the system. The device includes a hand-cranked pulley, a conductor, a volute spring, an electromagnetic vibrator device and a mechanical water flow accelerator device. The hand-cranked pulley is connected to the volute spring, and the volute spring is connected through the electromagnetic vibrator device or the mechanical water flow accelerator device to adjust the length of the inspection well conductor to ensure effective scale prevention at different water levels. The utility model effectively utilizes the electromagnetic vibration and mechanical water flow acceleration technology, improves the applicability and efficiency of the scale prevention device, and adjusts the hand-cranked pulley group through manual action to adjust the vertical length of the inspection well conductor, ensuring that the electromagnetic vibration and mechanical water flow acceleration device can play a scale prevention role under different water levels in the pipe.

Description

Technical Field

[0001] The utility model relates to the field of crystallization scale inhibition of tunnel drainage annular blind pipes and drainage ditches, in particular to a crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration. Background Art

[0002] Tunnel crystallization disaster is one of the engineering disasters that has received widespread attention in recent years. Its main manifestation is the accumulation of crystallized materials on the tunnel surface, entrance, inside the tunnel, and in the underground drainage system, which has caused problems such as accumulation and deformation of the tunnel section, obstruction of the entrance, and blockage of the drainage system. This will not only lead to construction difficulties and delays, but may also affect the stability and safety of the tunnel.

[0003] According to the Lorentz force mechanism, under the action of electromagnetic field, scaling substances in water can accelerate nucleation, but the continued growth of scaling particles will be inhibited. Calcium carbonate crystals in water usually exist in the form of aragonite and vaterite, that is, electromagnetic treatment achieves the purpose of scale inhibition by reducing the generation of scaling substances and changing the crystal form of calcium carbonate. The rotation of the propeller blades forms a rotating vortex in the water flow in the pipe, accelerates the water flow speed, inhibits the generation of scaling particles and scours the inner wall of the pipe, thereby achieving the purpose of scale inhibition.

[0004] At present, the commonly used methods for descaling and antiscaling are mainly air-water pulse and coils wrapped around the outside of the pipe. Although the above methods provide some ideas for solving the problem, they still face problems such as high maintenance cost, inconvenient engineering application, incompatibility with the internal design structure of the tunnel blind pipe, and long construction period in actual application. In order to improve this phenomenon, it is necessary to propose a crystallization antiscaling device based on electromagnetic vibration and mechanical water flow acceleration. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration, which can improve the efficiency of the existing pipeline cleaning technology.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] A crystallization scale prevention device based on electromagnetic vibration and mechanical water flow acceleration is applied to a target tunnel drainage system, wherein the target tunnel drainage system comprises: a tunnel drainage annular blind pipe, a tunnel drainage longitudinal blind pipe, a tunnel drainage transverse blind pipe, a central drainage ditch and an inspection well; one end of each of the tunnel drainage transverse blind pipes is arranged at equal intervals on both sides of the central drainage ditch; one of the tunnel drainage longitudinal blind pipes is arranged on each side of the central drainage ditch, and the other end of each of the tunnel drainage transverse blind pipes on each side is connected to the corresponding tunnel drainage longitudinal blind pipe; one end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on one side, and the other end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on the other side; each of the inspection wells is arranged on the central drainage ditch;

[0008] The crystallization scale inhibition device comprises: a hand-cranked pulley, a conducting wire, a scroll spring, an electromagnetic vibrating device and a mechanical water flow accelerator device;

[0009] One hand pulley is provided in the first and the last inspection well; two hand pulleys are provided in the remaining inspection wells; each hand pulley is connected to a volute spring; the volute spring connected to one hand pulley in the remaining inspection wells is connected to the volute spring connected to one hand pulley in the previous inspection well through the electromagnetic vibrator device or the mechanical water flow accelerator device, and the volute spring connected to another hand pulley in the remaining inspection wells is connected to the volute spring connected to one hand pulley in the next inspection well through the electromagnetic vibrator device or the mechanical water flow accelerator device; the hand pulley, the volute spring, the electromagnetic vibrator device and the mechanical water flow accelerator device are all connected to other components through the wire.

[0010] Preferably, the electromagnetic vibrating sub-device and the mechanical water flow accelerating sub-device are also connected to a preset cable via the conducting wire.

[0011] Preferably, it also includes a fixing device;

[0012] The hand-cranked pulley is fixed in the inspection well by the fixing device.

[0013] Preferably, each of the tunnel drainage annular blind pipes is provided with a plurality of interconnected electromagnetic vibrator devices; one end of the first electromagnetic vibrator device and one end of the last electromagnetic vibrator device are fixed in the inspection well closest to the tunnel drainage annular blind pipe through the tunnel drainage transverse blind pipe.

[0014] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0015] The utility model provides a crystallization scale prevention device based on electromagnetic vibration and mechanical water flow acceleration, which is applied to a target tunnel drainage system, wherein the target tunnel drainage system comprises: a tunnel drainage annular blind pipe, a tunnel drainage longitudinal blind pipe, a tunnel drainage transverse blind pipe, a central drainage ditch and an inspection well; one end of each of the tunnel drainage transverse blind pipes is arranged at equal intervals on both sides of the central drainage ditch; each side of the central drainage ditch is provided with a tunnel drainage longitudinal blind pipe, and the other end of each of the tunnel drainage transverse blind pipes on each side is connected to the corresponding tunnel drainage longitudinal blind pipe; one end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on one side, and the other end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on the other side; each of the inspection wells is arranged on the central drainage ditch; the crystallization scale prevention device comprises: a hand-cranked pulley, a conductor, a volute spring, an electromagnetic vibration Sub-device and mechanical water flow accelerator sub-device; one hand-cranked pulley is provided in the first and the last inspection well; two hand-cranked pulleys are provided in the remaining inspection wells; each hand-cranked pulley is connected to a volute spring; the volute spring connected to one hand-cranked pulley in the remaining inspection wells is connected to the volute spring connected to one hand-cranked pulley in the previous inspection well through the electromagnetic vibrator sub-device or the mechanical water flow accelerator sub-device, and the volute spring connected to another hand-cranked pulley in the remaining inspection wells is connected to the volute spring connected to one hand-cranked pulley in the next inspection well through the electromagnetic vibrator sub-device or the mechanical water flow accelerator sub-device; the hand-cranked pulley, the volute spring, the electromagnetic vibrator sub-device and the mechanical water flow accelerator sub-device are all connected to other components through the wire. The utility model adjusts the hand-cranked pulley set by manual action, thereby adjusting the vertical length of the inspection well wire, ensuring that the electromagnetic vibrator and the mechanical water flow accelerator can play a scale-inhibiting role under different water levels in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the structure of a target tunnel drainage system provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the structure of the device in the central drainage ditch provided by an embodiment of the utility model;

[0019] Figure 3 The electromagnetic device of the drainage annular blind pipe provided by the embodiment of the utility model and the schematic cross-sectional view of the unit thereof;

[0020] Figure 4 A schematic diagram of the structure of an electromagnetic vibrator device provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of a mechanical water flow acceleration device and its blades provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the structure of a hand-cranked pulley and a scroll spring provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1-tunnel drainage annular blind pipe, 2-tunnel drainage longitudinal blind pipe, 3-tunnel drainage transverse blind pipe, 4-central drainage ditch, A and B are adjacent inspection wells, 5-hand pulley, 6-volute spring, 7-electromagnetic vibrator device, 8-mechanical water flow accelerator device. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The utility model is used to solve the problems of high maintenance cost and difficult installation of devices in the prior art. The existing electromagnetic and mechanical water flow acceleration theoretical technologies do not have an effective device design for tunnel blind pipe scale prevention, nor a combined technical solution design to save the high cost of pure electromagnetic devices or improve the inefficient scale prevention of pure mechanical water flow devices.

[0028] like Figures 1 to 6As shown, the utility model provides a crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration, which is applied to a target tunnel drainage system, wherein the target tunnel drainage system comprises: a tunnel drainage annular blind pipe 1, a tunnel drainage longitudinal blind pipe 2, a tunnel drainage transverse blind pipe 3, a central drainage ditch 4 and an inspection well; one end of each of the tunnel drainage transverse blind pipes 3 is arranged at equal intervals on both sides of the central drainage ditch 4; one of the tunnel drainage longitudinal blind pipes 2 is arranged on each side of the central drainage ditch 4, and the other end of the tunnel drainage transverse blind pipe 3 on each side is connected to the corresponding tunnel drainage longitudinal blind pipe 2; one end of each of the tunnel drainage annular blind pipes 1 is connected to the tunnel drainage longitudinal blind pipe 2 on one side, and the other end of each of the tunnel drainage annular blind pipes 1 is connected to the tunnel drainage longitudinal blind pipe 2 on the other side; and each of the inspection wells is arranged on the central drainage ditch 4.

[0029] The crystallization scale inhibition device comprises: a hand-cranked pulley 5, a conducting wire, a scroll spring 6, a fixing device, an electromagnetic vibrating device 7 and a mechanical water flow accelerator device 8;

[0030] One hand pulley 5 is provided in the first and the last inspection well; two hand pulleys 5 are provided in the remaining inspection wells A and B; each hand pulley 5 is connected to a volute spring 6; the volute spring 6 connected to one hand pulley 5 in the remaining inspection wells is connected to the volute spring 6 connected to one hand pulley 5 in the previous inspection well through the electromagnetic vibrating sub-device 7 or the mechanical water flow accelerator device 8, and the volute spring 6 connected to another hand pulley 5 in the remaining inspection wells is connected to the volute spring 6 connected to one hand pulley 5 in the next inspection well through the electromagnetic vibrating sub-device 7 or the mechanical water flow accelerator device 8; the hand pulley 5, the volute spring 6, the electromagnetic vibrating sub-device 7 and the mechanical water flow accelerator device 8 are all connected to other components through the wire; the hand pulley 5 is fixed in the inspection well by the fixing device. Each of the tunnel drainage annular blind pipes 1 is provided with a plurality of interconnected electromagnetic vibrating devices 7; one end of the first electromagnetic vibrating device 7 and one end of the last electromagnetic vibrating device 7 are fixed in the inspection well closest to the tunnel drainage annular blind pipe 1 through the tunnel drainage transverse blind pipe 3.

[0031] The device of this embodiment is mainly composed of the following components: a drainage ditch body, which is designed to accommodate the entire device and is installed between two adjacent inspection wells for easy monitoring and maintenance. A hand-cranked pulley 5 is arranged on the inspection well to provide the necessary power supply for the energized wire. A volute spring 6 is connected to the wire and the hand-cranked pulley 5 to keep the wire in the drainage pipe in a taut state. The electromagnetic vibrator and the mechanical water flow acceleration device located between different adjacent inspection wells act together on the fluid in the pipe to reduce the accumulation of sediment and promote its removal.

[0032] In the specific use of the central drain, the device is first placed inside the drain pipe and firmly installed between adjacent inspection wells by means of a fixing device. During operation, the hand-cranked pulley 5 is manually adjusted to move the device up and down. When the water level is low, the pulley block is manually cranked to extend the length of the wire in the inspection well, causing the device to move down, and vice versa, shorten it, causing the device to move up. This dynamic adjustment ensures that the device can work efficiently under different water level conditions.

[0033] In addition, when the water level in the pipe exceeds half the pipe height, the electromagnetic vibrator 7 and the mechanical water flow accelerator 8 will work together to prevent the formation of scale. When the water level is low, the electromagnetic vibrator plays a major role.

[0034] Considering the reliability of long-term use, this device is designed with a convenient maintenance and replacement mechanism. When maintenance or replacement is required, the staff only needs to loosen the fixings at both ends to easily lift the entire device for maintenance or replacement, thus ensuring the long-term effective operation and efficient performance of the equipment.

[0035] In the specific use of the drainage annular blind pipe, the electromagnetic device is fixed inside the blind pipe when the annular blind pipe is installed, and the two ends of its wire are fixed in the inspection well along the drainage pipe to provide power to the device, which can play an electromagnetic vibration and scale prevention role on the tunnel drainage annular blind pipe 1 and extend the service life of the blind pipe. Considering the reliability of long-term use, when maintaining the electromagnetic device in the blind pipe, a reverse pump can be temporarily installed at the transverse blind pipe to use acid to hydraulically flush the drainage blind pipe system in the reverse direction, which can ensure the long-term effective operation and high-efficiency performance of the device.

[0036] At present, the blind pipe structure of domestic highway tunnels cannot use a single electromagnetic vibration to achieve scale inhibition by generating suspended microcrystals along the entire drainage system, especially in low turbulence state (Re is 2000-4000). Since the maximum diameter of the blind pipe is DN200, and most of the diameters of the ring pipe are DN100-150, the space velocity enhancement device has insufficient operating space. High-intensity direct current, 4 sets of parallel coil electromagnetic flux can reach the optimal scale inhibition strength of 0.4T-0.8T after winding 100 turns of 1cm diameter brass wire. Literature experiments have proved that under the action of the magnetic field of this range of intensity, the nucleated crystallized calcite can remain in a microcrystalline state and no longer grow. Combined with the turbine blade water flow speed increaser connected in series between the downstream side ditch and the 4 inspection wells of the central drainage ditch, the suspended microcrystalline calcite generated in the upstream magnetic field can remain suspended in a higher turbulence state (Re is 6000-8000) and be quickly taken out of the drainage pipe, solving the problem of pipeline scaling and blockage and further assisting in improving the efficiency of existing pipeline cleaning technology.

[0037] As shown in Table 1, for a PVC pipe with a diameter of 110 mm, a 0.4 mT magnetic field is applied, which has an obvious anti-scaling effect, that is, electromagnetic vibration can also play a role in anti-scaling when the magnetic induction intensity is small. The annular drainage blind pipe with a diameter of 100 mm is similar. When an energized coil is added, a 50 mT magnetic field can be generated in the pipe, which has a certain anti-scaling effect.

[0038] For cross-sectional areas close to 0.25m 2 For electric water tanks, the magnetized water has the best anti-scaling effect when the magnetic field strength is 0.4T to 0.8T. The cross-sectional size of the tunnel drainage ditch is about 0.5m×0.5m. After adding the quadruple electromagnetic coil, a magnetic field of about 0.2T is generated, which has a certain electromagnetic anti-scaling effect on the tunnel drainage ditch.

[0039] Table 1 Scale inhibition rate of hanging sheets under different turns

[0040]

[0041] For electromagnetic scale prevention devices with sizes similar to tunnel drainage ditches, the magnetized water has the best scale prevention and descaling effect when the magnetic induction intensity B is between 0.4 and 0.8 T. For electromagnetic scale prevention devices with sizes similar to tunnel annular blind pipes, they can also play a scale prevention role when the magnetic induction intensity is lower.

[0042] The voltage of the cable beside the railway tunnel is 35kV, and the transmission capacity is 2.5~15MW. According to the formula P=U×I (where P is the transmission capacity, U is the cable voltage, and I is the transmission current), the transmission current of the cable is 71.5~428.5A. A copper coil with a diameter of 1cm is selected. According to the formula S=πd 2 / 4 (where S is the cross-sectional area and d is the diameter) gives a cross-sectional area of ​​78.5 mm2 According to the formula S = 0.125I ~ 0.2I (where S is the cross-sectional area and I is the safe current carrying capacity), the safe current carrying capacity of the copper wire is 392.5 ~ 628A, which is suitable for the electromagnetic scale prevention device. According to the formula B = μ0nI (where B is the magnetic induction intensity, μ0 is the vacuum permeability, μ0 = 4π×10 -7 H / m, n is the number of turns of wire per unit length, and I is the current value of the wire) It can be seen that when the transmission current is 400A and the copper wire diameter is 1cm, the magnetic induction intensity B generated by the current-carrying wire is 0.05T.

[0043] The electromagnetic device is 1m long and contains 100 turns of coil. One is placed every 1m in the inspection wells 50m apart. In the drainage ditch with a size of 0.5m×0.5m, the diameter of the coil is 10cm. It is divided into four parallel copper wires with a diameter of 1cm by a thick copper wire with a diameter of 4cm. The magnetic induction intensity B=0.2T generated has the effect of electromagnetic scale prevention.

[0044] In a circular drainage blind pipe with a diameter of 10 cm, an electromagnetic device is set every 5 m. The diameter of the coil is 5 cm and it is wound by a copper wire with a diameter of 1. The magnetic induction intensity B generated is 0.05T, which plays an electromagnetic scale inhibition role.

[0045] The beneficial effects of the utility model are as follows:

[0046] 1. The utility model can make the conductor in the drainage ditch tight and parallel to the pipeline by adjusting the volute spring, thereby enhancing the scale prevention effect.

[0047] 2. The utility model adjusts the hand-cranked pulley manually to adjust the vertical length of the inspection well conductor, ensuring that the electromagnetic vibrator and the mechanical water flow acceleration device can play a scale-inhibiting role under different water levels in the pipe.

[0048] 3. The utility model uses the interval installation method to adjust the vertical height of the electromagnetic vibrator in the low water level state, so that it plays a major role, and in the high water level state, the two work together to prevent scale, preventing the rotating blades in the mechanical water flow acceleration device from damaging the inner wall of the pipe.

[0049] 4. The utility model is set between the interval inspection wells, which is convenient for regular maintenance and replacement of the device to ensure the efficiency of the device. If the replacement is not timely, the device can also be used as a crystal adsorption device to avoid crystallization in the pipeline to a certain extent.

[0050] 5. The electromagnetic scale-inhibiting device fixed in the drainage annular blind pipe of the utility model plays a role in scale inhibition. The device can be maintained by applying acid liquid through a reverse pump for hydraulic flushing, thereby increasing the service life of the blind pipe.

[0051] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0052] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration, characterized in that: Applied in a target tunnel drainage system, the target tunnel drainage system comprises: a tunnel drainage annular blind pipe, a tunnel drainage longitudinal blind pipe, a tunnel drainage transverse blind pipe, a central drainage ditch and an inspection well; one end of each of the tunnel drainage transverse blind pipes is arranged at equal intervals on both sides of the central drainage ditch; one of the tunnel drainage longitudinal blind pipes is arranged on each side of the central drainage ditch, and the other end of each of the tunnel drainage transverse blind pipes on each side is connected to the corresponding tunnel drainage longitudinal blind pipe; one end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on one side, and the other end of each of the tunnel drainage annular blind pipes is connected to the tunnel drainage longitudinal blind pipe on the other side; each of the inspection wells is arranged on the central drainage ditch; The crystallization scale inhibition device comprises: a hand-cranked pulley, a conducting wire, a scroll spring, an electromagnetic vibrating device and a mechanical water flow accelerator device; One hand pulley is provided in the first and the last inspection well; two hand pulleys are provided in the remaining inspection wells; each hand pulley is connected to a volute spring; the volute spring connected to one hand pulley in the remaining inspection wells is connected to the volute spring connected to one hand pulley in the previous inspection well through the electromagnetic vibrator device or the mechanical water flow accelerator device, and the volute spring connected to another hand pulley in the remaining inspection wells is connected to the volute spring connected to one hand pulley in the next inspection well through the electromagnetic vibrator device or the mechanical water flow accelerator device; the hand pulley, the volute spring, the electromagnetic vibrator device and the mechanical water flow accelerator device are all connected to other components through the wire.

2. The crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration according to claim 1 is characterized in that: The electromagnetic vibrating sub-device and the mechanical water flow accelerating sub-device are also connected to a preset cable through the conducting wire.

3. The crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration according to claim 1 is characterized in that: It also includes fixtures; The hand-cranked pulley is fixed in the inspection well by the fixing device.

4. The crystallization scale inhibition device based on electromagnetic vibration and mechanical water flow acceleration according to claim 1 is characterized in that: Each of the tunnel drainage annular blind pipes is provided with a plurality of interconnected electromagnetic vibrating devices; one end of the first electromagnetic vibrating device and one end of the last electromagnetic vibrating device are fixed in the inspection well closest to the tunnel drainage annular blind pipe through the tunnel drainage transverse blind pipe.

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