Device and method for casting magnetic mortar under magnetic field generated by non-contact electrode pulse current discharge

Abstract

The application provides a device and method for pouring magnetic mortar under the action of a magnetic field generated by non-contact electrode pulse current discharge, one end of a pipe piece is connected with a soft silica gel interface for injecting magnetic mortar, the outer surface of the pipe piece is provided with a slurry outlet for the outflow of the magnetic mortar, and the outer surface of the pipe piece is provided with a spraying port for spraying; the device further comprises a positive electrode and a negative electrode which are respectively installed on the outside of a building at a splicing joint, the positive electrode and the negative electrode are connected to an electric circuit, discharge is carried out through pulse current, a passage is formed by the positive electrode and the negative electrode in a liquid medium, an impact current is obtained in the discharge loop, a strong pulse magnetic field is generated around the passage formed by the positive electrode and the negative electrode, and the splicing joint is fully filled by the magnetic mortar under the attraction of the strong pulse magnetic field. The device and method can be well applied to the pouring of a splicing joint of a fabricated structure and the repair and reinforcement of water seepage cracks during the application of a building engineering.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering water seepage crack repair and reinforcement, in particular to a device and method for pouring magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge. BACKGROUND

[0002] In response to the call of the state energy saving and emission reduction, the construction industry has strengthened the attention to green building construction, and has integrated the energy saving and environmental protection concept into the building engineering construction process. The prefabricated building has become an inevitable trend of the development of the construction industry. In modern building construction, prefabricated structures are widely used, which not only improves the construction efficiency, but also plays an important role in ensuring the construction quality, and the overall advantages are obvious.

[0003] At present, the pouring of the splicing joint of the prefabricated building is usually carried out by manual splicing sealing. This method has low construction efficiency and high construction cost, and often has the problems of incomplete sealing or incomplete sealing. The building engineering is prone to leakage during application, and the safety and stability of the building structure cannot be guaranteed. SUMMARY

[0004] To solve the above technical problems, the present application provides a device and method for pouring magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge. The device and method can be well applied to the pouring of the splicing joint of the prefabricated structure and the repair and reinforcement of the water seepage crack during the application of the building engineering, and solve the waterproof problem of the splicing joint of the prefabricated building.

[0005] In order to realize the above technical features, the purpose of the present application is realized as follows: the device for pouring magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge comprises a tube piece, one end of the tube piece is connected with a soft silica gel interface for injecting magnetic mortar, the outer surface of the tube piece is provided with a slurry outlet for the outflow of the magnetic mortar, and the outer surface of the tube piece is provided with a spraying port for spraying;

[0006] During the pouring process, a positive electrode and a negative electrode are respectively installed on the outside of the building where the splicing joint is located, the positive electrode and the negative electrode are connected to a circuit, and the positive electrode and the negative electrode are discharged by pulse current. A passage is formed in the liquid medium, an impact current is obtained in the discharge loop, a strong pulse magnetic field is generated around the passage formed by the positive electrode and the negative electrode, and the splicing joint is fully filled by the magnetic mortar under the attraction of the strong pulse magnetic field.

[0007] The tube piece is flat and strip-shaped and is made of flexible material, so as to be placed in the splicing joint in a narrow space for grouting. The length and width of the tube piece can be adjusted according to the size of the splicing joint.

[0008] The soft silicone interface has different shapes at both ends. One end matches the opening shape of the pipe segment, while the other end is elliptical and is used to connect with a pressure grouting machine for grouting.

[0009] The slurry outlets are uniformly distributed on the outer surface of the tube segments.

[0010] The magnetic field strength of the strong pulsed magnetic field is specifically calculated based on the formula relating magnetic field strength to current.

[0011] The pulsed current used periodically discharges the positive and negative electrodes to avoid overheating due to prolonged discharge, which could cause short circuits or burn out the electrodes.

[0012] The spray nozzles are evenly distributed on the outer surface of the pipe segment, and ensure that when the magnetic mortar is poured in the air, water mist is sprayed out through the spray nozzles to increase the moisture content in the air and enhance the conductivity.

[0013] The magnetic mortar is a magnetically guided self-converging engineering slurry. It uses waste steel slag, iron ore, iron powder, and magnetic powder as the main magnetic aggregates. A dispersant is used to prevent the aggregates from rusting. It is fully mixed with fly ash, epoxy resin grout, and reactive diluent to form a magnetic slurry.

[0014] Under the influence of a magnetic field, the magnetic mortar reaches various locations of the joint through the grout outlet. Due to its strong underwater anti-dispersion properties, the magnetic mortar can drain excess water from the joint while grouting and filling.

[0015] For large-sized splice seams, a flexible wire mesh is installed between the positive and negative electrodes using a linkage telescopic mechanism. When the linkage telescopic mechanism enters the splice seam, the flexible wire mesh enters along with the linkage telescopic mechanism and is stretched open by the linkage telescopic mechanism. After the linkage telescopic mechanism is removed, the flexible wire mesh is separated from the linkage telescopic mechanism and remains inside the splice seam.

[0016] During the discharge process of the positive and negative electrodes, the conductivity is enhanced by the action of the flexible wire mesh, and the magnetic field is formed together with the current, which increases the magnetic field strength and improves the grouting speed and filling density of the magnetic mortar.

[0017] The method for casting magnetic mortar using the device for casting magnetic mortar under a magnetic field generated by the non-contact electrode pulse current discharge includes the following steps:

[0018] Step 1: Install positive and negative electrodes on both sides of the building where the splice joint is located;

[0019] Step 2: Select different pipe segments according to the pouring environment of magnetic mortar. When magnetic mortar is poured in the air, use pipe segments with spray nozzles to increase the humidity in the air and enhance the conductivity.

[0020] Step 3: For large-sized splicing seams, a flexible wire mesh is installed between the positive and negative electrodes through a linkage telescopic mechanism to enhance conductivity and form a magnetic field together with the current.

[0021] Step 4: Select the appropriate segment size according to the size of the splice joint, and place and fix the segment inside the splice joint that needs grouting;

[0022] Step 5: Use a high-voltage energy storage capacitor to release pulse current to the positive and negative electrodes, and combine it with the liquid medium or flexible wire mesh to form a strong pulsed magnetic field.

[0023] Step 6: Connect the pressure grouting machine to the soft silicone interface and inject magnetic mortar;

[0024] Step 7: Under the action of a strong pulsed magnetic field, the magnetic mortar is discharged to both sides and reaches each position of the splice joint through the grout outlet to achieve full grouting;

[0025] Step 8: Magnetic mortar has strong underwater anti-dispersion properties, and it drains excess water from the joints while grouting and filling.

[0026] Step 9: Move the segment and repeat steps 1-8 above to complete the pouring of the entire joint.

[0027] The present invention has the following beneficial effects:

[0028] 1. This invention uses flat, strip-shaped segments, which are placed in the joints of narrow spaces for grouting. The length and width of the segments can be adjusted according to the size requirements of the joints to suit various engineering construction conditions.

[0029] 2. The present invention has a spray nozzle installed on the tube segment. When the magnetic mortar is poured in the air, water mist is sprayed out through the spray nozzle to increase the air humidity around the positive and negative electrodes, enhance the conductivity, and help form a path between the electrodes.

[0030] 3. This invention uses non-contact electrodes to generate a magnetic field, and utilizes a liquid medium or flexible wire mesh between the positive and negative electrodes to enhance conductivity, forming a path and generating a magnetic field for the non-contact positive and negative electrodes. This not only improves construction efficiency, but also eliminates the need to pre-install magnetic anchors to avoid damaging the wall, thus reducing construction costs.

[0031] 4. This invention uses pulsed current to discharge the electrodes and form a path between the two electrodes. A strong pulsed magnetic field is generated around the positive and negative electrodes. The magnetic mortar is fully filled under the action of the magnetic field, which avoids the electrode short circuit or burnout caused by excessive temperature due to long-term discharge, reduces resource waste and improves construction efficiency.

[0032] 5. This invention employs a linkage telescopic mechanism to install a flexible wire mesh between the two electrodes. When the linkage telescopic mechanism enters the joint, the flexible wire mesh follows. When the linkage telescopic mechanism is removed, the flexible wire mesh is opened and detached from the mechanism, remaining inside the joint. During the discharge process of the positive and negative electrodes, the flexible wire mesh enhances conductivity and, together with the current, forms a magnetic field, increasing its strength and improving the grouting efficiency of the magnetic mortar.

[0033] 6. This invention uses a magnetically guided self-converging engineering grout, which has higher strength and ensures structural safety. It exhibits strong anti-dispersion properties underwater and can overcome gravity grouting. While filling the joints, it can also drain excess water, thus achieving the purpose of grout pouring and solving the waterproofing problem of prefabricated structure joints. Attached Figure Description

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0035] Fig. 1 This is a schematic diagram of the overall device of the present invention.

[0036] Fig. 2 This is a cross-sectional view of the device of the present invention.

[0037] Fig. 3 This is a schematic diagram of slurry expansion under the action of a strong pulsed magnetic field, according to the present invention.

[0038] In the diagram: 1. Pipe segment; 2. Soft silicone interface; 3. Slurry outlet; 4. Magnetic mortar; 5. Flexible wire mesh; 6. Positive electrode; 7. Negative electrode; 8. Spray nozzle; 9. Wall; 10. Strong pulse magnetic field. Detailed Implementation

[0039] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0040] Example 1:

[0041] See Figs. 1-3A non-contact electrode pulse current discharge device for magnetic mortar pouring under a magnetic field includes a tube segment 1. One end of the tube segment 1 is connected to a soft silicone interface 2 for injecting magnetic mortar 4. The outer surface of the tube segment 1 has a slurry outlet 3 for the magnetic mortar 4 to flow out, and a spray nozzle 8 for spraying. During the pouring process, positive electrodes 6 and negative electrodes 7 are installed on the outside of the building where the joint is located. The positive and negative electrodes 6 and 7 are connected to a circuit, and a pulse current discharge is performed. The positive and negative electrodes form a path in the liquid medium, and the discharge circuit receives an impact current, generating a strong pulsed magnetic field 10 around the path formed by the positive and negative electrodes 6 and 7. The magnetic mortar 4 is attracted by the strong pulsed magnetic field 10 and fully fills the joint. This device can be effectively applied to the pouring of joints in prefabricated structures and the repair and reinforcement of seepage cracks during building construction, solving the waterproofing problem of joints in prefabricated buildings.

[0042] Furthermore, the tube segment 1 is a flat strip made of flexible material, designed for placement in confined spaces during grouting. The length and width of the tube segment 1 can be adjusted according to the size requirements of the joint. This ensures that the tube segment 1 can effectively adapt to grouting processes for joints of different sizes.

[0043] Furthermore, the soft silicone connector 2 has different shapes at both ends. One end matches the opening shape of the segment 1, while the other end is elliptical and used to connect with the pressure grouting machine for grouting. The soft silicone connector 2 described above enables effective docking connection between the segment 1 and the pressure grouting machine.

[0044] Furthermore, the grout outlets 3 are uniformly distributed on the outer surface of the segment 1. These grout outlets 3 increase the space for the magnetic mortar flow, thereby improving grouting efficiency.

[0045] Furthermore, the magnetic field strength of the strong pulsed magnetic field 10 is specifically calculated based on the formula relating magnetic field strength to current. Specifically, by connecting the positive electrode 6 and the negative electrode 7 to the circuit, and discharging through a pulsed current, a path is formed between the positive and negative electrodes in the liquid medium, and the discharge circuit obtains an impact current of nearly 100 kA.

[0046] Furthermore, the pulsed current used periodically discharges the positive electrode 6 and the negative electrode 7 to avoid overheating due to prolonged discharge, which could cause short circuits or burnout of the electrodes, reduce resource waste, and improve construction efficiency.

[0047] Furthermore, the spray nozzles 8 are evenly distributed on the outer surface of the pipe segment 1, and ensure that when the magnetic mortar 4 is poured in the air, water mist is sprayed out through the spray nozzles 8 to increase the moisture content in the air and enhance the conductivity, thereby ensuring that a discharge circuit can be formed during the subsequent pouring process to obtain an impact current of nearly 100 kA.

[0048] Furthermore, the magnetic mortar 4 adopts a magnetically guided self-converging engineering grout, using waste steel slag, iron ore, iron powder, and magnetic powder as the main magnetic aggregates. A dispersant is used to prevent the aggregates from rusting. It is fully mixed with fly ash, epoxy resin grout, and reactive diluent to form a magnetic grout. Under the action of a magnetic field, the magnetic mortar 4 reaches various positions of the joint through the grout outlet 3. The magnetic grout has higher strength and strong anti-dispersion properties underwater. At the same time, it can overcome gravity grouting, resulting in a high grout filling rate and solving the problem of incomplete filling.

[0049] Furthermore, under the influence of a magnetic field, the magnetic mortar 4 reaches various locations of the splice joint through the grout outlet 3. Since the magnetic mortar has strong underwater anti-dispersion properties, it can drain excess water from the splice joint while grouting and filling, thus achieving the purpose of grout pouring and solving the waterproofing problem of the splice joint of the prefabricated structure.

[0050] Furthermore, for large-sized splice seams, a flexible wire mesh 5 is installed between the positive electrode 6 and the negative electrode 7 using a linkage telescopic mechanism. When the linkage telescopic mechanism enters the splice seam, the flexible wire mesh 5 enters along with the linkage telescopic mechanism and is stretched open by the linkage telescopic mechanism. After the linkage telescopic mechanism is removed, the flexible wire mesh 5 is detached from the linkage telescopic mechanism and remains inside the splice seam. During the discharge process of the positive electrode 6 and the negative electrode 7, the conductivity is enhanced by the action of the flexible wire mesh 5, and it works together with the current to form a magnetic field, increasing the magnetic field strength and improving the grouting speed and filling density of the magnetic mortar.

[0051] Example 2:

[0052] The method for casting magnetic mortar using the device for casting magnetic mortar under a magnetic field generated by the non-contact electrode pulse current discharge includes the following steps:

[0053] Step 1: Install positive electrode 6 and negative electrode 7 on both sides of the building where the splice joint is located;

[0054] Step 2: Select different pipe segments according to the pouring environment of magnetic mortar 4. When the magnetic mortar is poured in the air, use pipe segments with spray nozzles 8 to increase the humidity in the air and enhance the conductivity.

[0055] Step 3: For large-sized splicing seams, a flexible wire mesh 5 is installed between the positive electrode 6 and the negative electrode 7 through a linkage telescopic mechanism to enhance conductivity and form a magnetic field together with the current.

[0056] Step 4: Select the appropriate segment size according to the size of the splice joint, and place and fix the segment inside the splice joint that needs grouting;

[0057] Step 5: Use a high-voltage energy storage capacitor to release pulse current to the positive electrode 6 and the negative electrode 7, and together with the liquid medium or flexible wire mesh 5, form a strong pulsed magnetic field 10.

[0058] Step 6: Connect the pressure grouting machine to the soft silicone interface 2 and inject the magnetic mortar 4;

[0059] Step 7: Under the action of the strong pulsed magnetic field 10, the magnetic mortar 4 is discharged to both sides and reaches each position of the splice joint through the grout outlet 3 to achieve full grouting;

[0060] Step 8: Magnetic mortar has strong underwater anti-dispersion properties, and it drains excess water from the joints while grouting and filling.

[0061] Step 9: Move segment 1 and repeat steps 1-8 above to complete the pouring of the entire splice joint.

Claims

1. A method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge, comprising a device for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge, the device comprising a tube segment (1), one end of the tube segment (1) being connected to a soft silicone interface (2) for injecting magnetic mortar (4), the outer surface of the tube segment (1) being provided with a slurry outlet (3) for the magnetic mortar (4) to flow out, and the outer surface of the tube segment (1) being provided with a spray nozzle (8) for spraying; During the pouring process, positive electrodes (6) and negative electrodes (7) are installed on the outside of the building where the splice joint is located. The positive electrodes (6) and negative electrodes (7) are connected to the circuit and discharged through pulse current. The positive and negative electrodes form a path in the liquid medium, and the discharge circuit obtains the impact current. A strong pulse magnetic field (10) is generated around the path formed by the positive electrodes (6) and negative electrodes (7). The magnetic mortar (4) is attracted by the strong pulse magnetic field (10) to fully fill the splice joint. Its features are, The method includes the following steps: Step 1: Install positive electrodes (6) and negative electrodes (7) on both sides of the building where the splice joint is located. Step 2: Select different pipe segments according to the pouring environment of magnetic mortar (4). When magnetic mortar is poured in the air, pipe segments with spray nozzles (8) are used to increase the humidity in the air and enhance the conductivity. Step 3: For large-sized splicing seams, a flexible wire mesh (5) is installed between the positive electrode (6) and the negative electrode (7) through a linkage telescopic mechanism to enhance conductivity and form a magnetic field together with the current; Step 4: Select the appropriate segment size according to the size of the splice joint, and place and fix the segment inside the splice joint that needs grouting; Step 5: Use a high-voltage energy storage capacitor to release pulse current to the positive electrode (6) and negative electrode (7), and use it together with the liquid medium or flexible wire mesh (5) to form a strong pulse magnetic field (10). Step 6: Connect the pressure grouting machine to the soft silicone interface (2) and inject magnetic mortar (4); Step 7: Under the action of a strong pulsed magnetic field (10), the magnetic mortar (4) is discharged to both sides and reaches each position of the splice joint through the grout outlet (3) to achieve full grouting; Step 8: Magnetic mortar has strong underwater anti-dispersion properties, and it drains excess water from the joints while grouting and filling. Step 9: Move the segment (1) and repeat steps 1-8 above to complete the pouring of the entire splice joint.

2. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The tube segment (1) is a flat strip made of flexible material, which is placed in the splice seam of a narrow space for grouting. The length and width of the tube segment (1) can be adjusted according to the size requirements of the splice seam.

3. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The soft silicone interface (2) has different shapes at both ends. One end matches the opening shape of the pipe segment (1), and the other end is elliptical, which is used to connect with the pressure grouting machine for grouting.

4. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The slurry outlet (3) is uniformly arranged on the outer surface of the tube segment (1).

5. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The magnetic field strength of the strong pulsed magnetic field (10) is specifically calculated according to the formula relating magnetic field strength to current.

6. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The pulsed current used periodically discharges the positive electrode (6) and the negative electrode (7) to avoid the electrode from short-circuiting or burning out due to excessive temperature caused by long-term discharge.

7. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The spray nozzles (8) are evenly distributed on the outer surface of the pipe segment (1) and ensure that when the magnetic mortar (4) is poured in the air, water mist is sprayed out through the spray nozzles (8) to increase the moisture content in the air and enhance the conductivity.

8. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: The magnetic mortar (4) adopts magnetically guided self-converging engineering slurry, uses waste gas steel slag, iron ore, iron powder and magnetic powder as the main magnetic aggregates, uses dispersant to prevent the aggregates from rusting, and is fully mixed with fly ash, epoxy resin grout and active diluent to form magnetic slurry; The magnetic mortar (4) reaches each position of the splice joint through the grout outlet (3) under the action of the magnetic field. The magnetic mortar (4) has strong underwater anti-dispersion properties and can drain excess water from the splice joint while grouting and filling.

9. The method for casting magnetic mortar under a magnetic field generated by non-contact electrode pulse current discharge according to claim 1, characterized in that: For large-sized splice seams, a flexible wire mesh (5) is installed between the positive electrode (6) and the negative electrode (7) by using a linkage telescopic mechanism. When the linkage telescopic mechanism enters the splice seam, the flexible wire mesh (5) enters along with the linkage telescopic mechanism and is stretched open by the linkage telescopic mechanism. After the linkage telescopic mechanism is removed, the flexible wire mesh (5) is separated from the linkage telescopic mechanism and remains inside the splice seam. During the discharge process of the positive electrode (6) and the negative electrode (7), the conductivity is enhanced by the action of the flexible wire mesh (5), and the magnetic field is formed by the interaction with the current, which increases the magnetic field strength and improves the grouting speed and filling density of the magnetic mortar.

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