Implementation Process for Adjusting Curing Adhesive at Electric Power Construction Site
Through the cured glue adjustment implementation process at the power construction site, electromagnetic induction heating and magnetic linkage control of foaming and curing speed, combined with glass fiber mesh and gas storage particles, the problem of difficult construction of cured glue in complex or deep hole structures is solved, and rapid and uniform foaming and curing is achieved, and sealing effect is improved.
Patent Information
- Application Number
- CN202411805889.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2044-12-10
AI Technical Summary
The existing fast cable foam fire-resistant curing glue is difficult to construct in complex or deep hole structures, resulting in unsatisfactory expansion performance and sealing effect.
The power construction site curing glue adjustment implementation process is adopted, and the power curing glue of components A and B is used, combined with an electric glue puncher, an electromagnetic heater and an electromagnetic device, through electromagnetic induction heating and magnetic linkage that controls the foaming and curing speed, and is combined with fragmented glass fiber mesh and gas storage particles, the controllable foaming and curing of the colloid is achieved.
It achieves rapid and uniform foaming and curing in complex or deep hole structures, improves the sealing effect, ensures the controllability and stability of the cured glue, and avoids aging and cracking problems.
Smart Images

Figure CN119286470B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electric power engineering, and in particular to a process technology for implementing curing glue. Background Art
[0002] Fast-curing cable foam fireproof adhesive is a material used to fill and seal holes where cables pass through walls or floors. It expands in the event of a fire, forming a fire barrier that prevents the spread of fire and smoke penetration. This technology plays an important role in construction and electrical engineering, particularly in improving the fire safety of buildings.
[0003] A silicone-modified polyester material forms a fast-foaming, fire-resistant, and waterproof curing adhesive for power cables. While maintaining the excellent properties of the original polyester, the introduction of silicone significantly enhances its resistance to high temperatures, weathering, and chemical corrosion. Furthermore, an inorganic, environmentally friendly flame retardant is added. This material not only exhibits highly effective flame retardancy but also produces no toxic or harmful gases during combustion, meeting environmental requirements and ensuring product safety and environmental friendliness.
[0004] However, some walls or floors have complex cable hole structures, or the cable holes are long and deep, or the cable holes are curved. This situation will make the construction of the rapid cable foaming fire-retardant curing adhesive difficult, resulting in unsatisfactory expansion performance and sealing effect of the rapid cable foaming fire-retardant curing adhesive.
[0005] Therefore, it is necessary to equip the construction site with equipment for implementing the curing glue and improve the implementation process of the curing glue to control the foaming speed and curing speed of the curing glue. Summary of the Invention
[0006] The object of the present invention is to provide a process for adjusting and implementing curing adhesive at an electric power construction site to solve at least one of the above-mentioned technical problems.
[0007] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:
[0008] Adjust the implementation process of curing glue at the power construction site, prepare power curing glue, which includes component A and component B;
[0009] Component A includes resin matrix, foaming agent, flame retardant, plasticizer and filler;
[0010] Component B includes a cross-linking agent, a catalyst, and a coupling agent;
[0011] An electric glue applicator is also provided, and the electric glue applicator has a glue cylinder for accommodating the glue;
[0012] There is also an implementation device for the controllable foaming and curing of the power curing adhesive, which has an electromagnetic heater for heating the power curing adhesive and an electromagnet device for magnetically linking the magnetic material;
[0013] The implementation equipment also includes an electromagnet drive circuit, an electromagnetic heater drive circuit, and a control system;
[0014] The electromagnet driving circuit is driven and connected to an electromagnetic induction coil through an electromagnet control switch;
[0015] The electromagnetic heater driving circuit is driven and connected to the same electromagnetic induction coil through an electromagnetic heater control switch;
[0016] The electromagnetic heater and the electromagnet device share the same electromagnetic induction coil;
[0017] The control system controls the electromagnetic heater control switch and the electromagnet control switch respectively;
[0018] The control system controls the electromagnetic heater control switch and the electromagnet control switch, and starts them alternately;
[0019] The start-up time of the electromagnetic heater drive circuit is 0.2 to 0.5 seconds, and the frequency of the alternating current output by the electromagnetic heater drive circuit is 20 to 30 kHz;
[0020] The start-up time of the electromagnet drive circuit is 0.3 to 0.5 seconds, and the alternating frequency output by the electromagnet drive circuit to reverse the polarity of the magnetic field is 10 to 20 Hz;
[0021] Fragmented fiberglass mesh is also available.
[0022] The glass fiber mesh has warp and weft, and both the warp and weft are made of glass fiber;
[0023] The glass fiber as one of the warp and weft has a composite layer of ferroferric oxide powder;
[0024] The glass fiber, which is another of the warp and weft yarns, has a composite layer of graphite powder;
[0025] The implementation method of power curing adhesive at the power construction site includes the following steps:
[0026] Step S1, dust removal: using compressed air to blow the cable holes to be foamed and sealed to remove the dust in the cable holes to be foamed and sealed;
[0027] Step S2, oil cleaning: spray the cable holes to be foamed and sealed with a self-volatile oil removal spray, let it stand for 10 to 15 minutes, and then use compressed air again to remove the remaining spray from the cable holes to be foamed and sealed;
[0028] Step S3, hot air dehumidification: prepare a hot air device, inject hot air into the cable holes to be foamed and sealed for 3 to 5 minutes to remove moisture from the cable holes to be foamed and sealed;
[0029] Step S4, mixing glass fiber mesh filler: controlling the weight ratio of component A and glass fiber mesh to be 5:1 to 3:1, stirring evenly to obtain a mixture;
[0030] Step S6, mixing the glue: the mixed material and component B are mixed in a volume ratio of 5:1 to 10:1, and the stirring time is controlled within 2 minutes; after stirring evenly, a mixed colloid is obtained;
[0031] Step S7, glue injection: remove the glue cartridge of the electric glue machine, pour the mixed glue into the glue cartridge, load the glue cartridge onto the electric glue machine, squeeze the glue cartridge with the electric glue dispenser, and inject the mixed glue in the glue cartridge into the deep of the cable hole to be foamed and sealed by pressure;
[0032] Step S8, temperature-controlled foaming and vibration curing: start the implementation equipment;
[0033] The implementation equipment has a working process of alternately turning on the electromagnetic heater and the electromagnet device, and uses a magnetic field induction heating method to heat and foam the mixed colloid injected deep into the cable hole in step S7. When the handheld implementation equipment heats the mixed colloid, the electromagnetic heater is close to the mixed colloid at a distance of 3 cm to 5 cm;
[0034] In the glass fiber mesh, the glass fiber bonded with graphite powder has electrical conductivity, and the glass fiber bonded with soft magnetic material powder has soft magnetic properties. They can introduce the magnetic field deep into the mixed colloid, forming a relatively uniform magnetic field distribution in the mixed colloid, thereby making the conductive glass fiber relatively uniformly heated, thereby controlling the foaming speed of the curing glue;
[0035] The implementation equipment also has a working process of turning on the electromagnet device, and placing the electromagnet device 2cm to 5cm close to the periphery of the cable hole to be foamed. The magnetic field of the electromagnet device interacts with the warp or weft of the glass fiber mesh bonded with soft magnetic material powder, driving the glass fiber mesh to vibrate in the mixed colloid, playing the role of stirring the mixed colloid, causing the cross-linking agent and the water molecules in the curing glue to react chemically to form a three-dimensional cross-linked stereo structure, thereby accelerating the curing speed of the curing glue.
[0036] In the above design, during on-site construction, shredded glass fiber mesh is first mixed into component A of the power-curing adhesive, and one of the warp or weft of the glass fiber mesh has a composite layer of conductive material, and the other has a composite layer of soft magnetic material.
[0037] The presence of the conductive material in the composite layer of glass fiber creates a conductive path on its surface, giving it conductive properties and enabling it to generate eddy currents through electromagnetic induction, thereby generating heat. Before curing, the mixed colloid is in a fluid state, with the fragmented glass fiber mesh dispersed and suspended in the colloid, without contact. Therefore, after the mixed colloid cures, the conductive glass fibers are dispersed and isolated, unable to connect in series to form a conductive path. As a result, the cured colloid is insulating overall.
[0038] The ferrosoferric oxide powder has soft magnetic properties in the mixed colloid, which can introduce the magnetic field of the electromagnetic heater into the deep of the mixed colloid, forming a relatively uniform magnetic field distribution in the mixed colloid, thereby making the conductive glass fiber in the mixed colloid relatively uniformly heated, thereby controlling the foaming speed of the curing glue.
[0039] The beneficial effect of implementing step S1 of the method is to remove dust on the cable surface and deep in the cable hole, so that the cable surface and cable hole after the dust is removed are in closer contact with the cured adhesive.
[0040] The beneficial effect of implementing step S2 of the method is to remove the oil, colloid residue and other substances that may remain in the cable hole to be foamed and sealed, so that the bond between the cable hole to be foamed and sealed and the cured adhesive is more firmly established.
[0041] The beneficial effect of implementing step S3 of the method is to remove moisture from the cable holes and prevent the cured adhesive from experiencing quality problems such as aging and cracking after long-term use.
[0042] The beneficial effect of implementing step S4 of the method is that the fragmented glass fiber mesh and component A are doped, and the cured adhesive doped with the fragmented glass fiber mesh can be cured by non-contact heating, bubbling and vibration stirring through the implementing equipment.
[0043] The beneficial effect of implementing step S6 of the method is that the components A and B of the curing adhesive are fully stirred so that the two components begin to enter the foaming and curing reaction process after mixing.
[0044] The beneficial effect of implementing step S7 of the method is that, by adopting the extrusion injection method, the curing glue can be injected deep into the cable hole, achieving a better sealing effect.
[0045] The beneficial effect of implementing step S8 of the method is that an electromagnetic heater is used to control the conductive mixed colloid to generate eddy current heating, thereby controlling the foaming speed and achieving controllable foaming speed. The fragmented glass fiber mesh, as either the warp or weft, has a composite layer of soft magnetic material. The soft magnetic material is magnetic and can drive the glass fiber mesh to vibrate under the action of an alternating magnetic field. The beneficial effect is that the vibration of the glass fiber mesh can act as a stirrer, allowing the crosslinking agent components of the curing adhesive and water molecules to come into better contact, thereby chemically reacting to form a three-dimensional crosslinked structure, thereby accelerating the curing speed of the curing adhesive. In addition, the vibration of the glass fiber mesh can also strengthen the contact between the glass fiber mesh and the curing adhesive, eliminating surface tension.
[0046] In step S8, the electromagnetic heater and the electromagnetic magnetic field are operated alternately, and the magnetic field is started to vibrate the glass fiber mesh while heating the mixed colloid. This implementation method allows the electric solid glue to foam rapidly while the cross-linking agent also reacts chemically with water molecules quickly to form a three-dimensional cross-linked structure, achieving more uniform foaming and curing of the electric solid glue and better sealing effect.
[0047] In the above design, the function of the alternating frequency of the magnetic polarity reversal output by the electromagnet drive circuit is to drive the glass fiber mesh to vibrate, so as to achieve stirring, eliminate bubbles, and make the mesh and colloid contact more firmly. The glass fiber mesh is doped in the mixed colloid, and its excessive vibration will be eliminated by the colloid. Therefore, there is no need for the vibration frequency to be too high. The frequency of the magnetic polarity reversal is maintained at 10Hz~20Hz, which is sufficient to meet the vibration needs without consuming too much energy.
[0048] Furthermore, the power of the electromagnetic heater driving circuit is between 50W and 200W.
[0049] In the above design, the power output of the electromagnetic heater driving circuit is controlled at 50 watts to 200 watts, which can keep the temperature of the curing glue from rising too high, thereby promoting the foaming speed without destroying the colloidal components of the curing glue due to excessive temperature.
[0050] Furthermore, gas storage particles that can be detonated by a combination of induced magnetic field and magnetic force are also prepared;
[0051] The gas storage particles have an airtight rubber bladder, and the air humidity in the rubber bladder is maintained at 80-90%;
[0052] The volume of gas storage particles is 3mm 3 ~5mm 3 ;
[0053] A steel sheet with an obtuse angle is placed inside the rubber bladder. The volume of the steel sheet accounts for 1 / 5 to 1 / 8 of the volume of the gas storage particles. The steel sheet is adhered to the inner wall of the rubber bladder by an adhesive.
[0054] Between step S4 and step S6, step S5 is added, wherein the gas storage particle filler is mixed: the mixed material and the gas storage particles are mixed in a volume ratio of 5:1 to 3:1, and stirred until uniform, to obtain a secondary mixed material as the mixed material.
[0055] In the above design, the gas storage particles are made of polyvinyl chloride rubber. The polyvinyl chloride rubber vesicles have good mechanical strength, as well as high elasticity and plasticity at room temperature. When the gas storage particles and the mixed colloid are mixed and stirred, the rubber vesicles are easy to deform, but not easy to break, and will not be punctured by the steel sheet during the stirring process.
[0056] Furthermore, it also includes step S9, composite detonation of gas storage particles: the implementation equipment is handheld and the electromagnetic heater and the electromagnet device are intermittently turned on and off. On the one hand, the steel sheet in the rubber bladder of the gas storage particle is induction heated by using a magnetic field induction heating method. When the temperature of the steel sheet rises to 130°C-140°C, the rubber bladder in contact with the steel sheet softens and is easily stretched and ruptured under the action of the internal air pressure; on the other hand, the steel sheet pulls the inner wall of the rubber bladder under the action of the electromagnet device, and the rubber bladder is easily torn apart when the rubber bladder is softened, thereby releasing more water molecules inside the cured glue. The water molecules react chemically with the cross-linking agent inside the cured glue to form a three-dimensional cross-linked network, thereby accelerating the curing speed of the cured glue.
[0057] In the above design, the electromagnetic heater and the electromagnet device have a dual role, and its beneficial effect is that it is easier to make the rubber vesicles burst, thereby releasing a large amount of water molecules and cross-linking agents to undergo chemical reactions, thereby accelerating the curing speed of the solid glue.
[0058] Furthermore, the production equipment for preparing gas storage particles includes a workbench, a grid strip is provided on the workbench surface, an airtight cavity is provided under the workbench surface, and the cavity is connected to an air pump;
[0059] The grid strip is fixedly connected to the top of the cavity;
[0060] A sealing shear is also provided below the grid strips. The sealing shear includes two shear blades. The two shear blades are close to the grid strips and are respectively provided on the left and right sides of the grid strips.
[0061] The two scissor blades are also provided with heating devices, which heat the two scissor blades to 150 degrees to 200 degrees;
[0062] The mesh of the grid slats meets the size requirements of the gas storage particles;
[0063] The preparation method of gas storage particles is as follows:
[0064] Step 1: A polyvinyl chloride rubber film is placed on the grid strip plate to seal all grid holes on the grid strip; an air pump is started to form a negative pressure in the cavity, and the polyvinyl chloride rubber film is sunken into the cavity under the action of atmospheric pressure;
[0065] Step 2: Place the steel sheet coated with adhesive into the mesh holes in the mesh strips so that the steel sheet falls into the depression;
[0066] Step 3: The vacuum pump continues to operate, causing the polyvinyl chloride rubber membrane to swell continuously and form vesicles;
[0067] Step 4: Start the sealing shears to cut the vesicles formed by the polyvinyl chloride rubber film close to the bottom of the grid strips, and simultaneously perform hot-melt sealing to form gas storage particles;
[0068] When preparing the above-mentioned gas storage particles, the air humidity of the preparation environment is controlled at 80% to 90%.
[0069] Furthermore, the implementation equipment includes a device housing, and the device housing is provided with a handheld handle;
[0070] An electromagnetic induction coil is installed on the device casing;
[0071] An electromagnet drive circuit and an electromagnetic heater drive circuit are arranged in the housing;
[0072] A control system is also provided in the shell, and the electric signal of the control system is connected to the electromagnet control switch and the electromagnetic heater control switch.
[0073] In the above design, the implementation equipment is a handheld device used at the construction site. The implementation equipment is equipped with an electromagnetic induction coil. By connecting the electromagnet drive circuit or the electromagnetic heater drive circuit, the function of heating the mixed colloid and the function of magnetically linked vibration of the glass fiber mesh are realized respectively. The two functions share the same electromagnetic induction coil, which saves manufacturing costs on the one hand and reduces the size and weight of the equipment on the other hand, making it easy to carry on site and saving effort when handheld operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0074] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:
[0075] Figure 1 It is a schematic diagram of the equipment for implementing controlled foaming and curing of power-curing adhesive;
[0076] Figure 2It is a schematic diagram of the structure of a fragmented glass fiber mesh;
[0077] Figure 3 is a schematic diagram of gas storage particles.
[0078] Explanation of symbols:
[0079] 1. Implementation equipment; 2. Glass fiber mesh; 3. Gas storage particles; 11. Electromagnetic induction coil; 21. Warp; 22. Weft; 31. Rubber bladder; 32. Steel sheet. DETAILED DESCRIPTION
[0080] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0081] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0082] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.
[0083] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it necessarily refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0084] Example 1, reference Figure 1 、 Figure 2 As shown, the implementation process of adjusting the curing glue at the power construction site is prepared with power curing glue, which includes component A and component B;
[0085] Component A includes resin matrix, foaming agent, flame retardant, plasticizer and filler;
[0086] Component B includes a cross-linking agent, a catalyst, and a coupling agent;
[0087] An electric glue applicator is also provided, and the electric glue applicator has a glue cylinder for accommodating the glue;
[0088] There is also provided an implementation device 1 for controllable foaming and curing of the power curing adhesive, the implementation device 1 having an electromagnetic heater for heating the power curing adhesive and an electromagnet device for magnetically linking the magnetic material;
[0089] The implementation equipment 1 also includes an electromagnet drive circuit, an electromagnetic heater drive circuit, and a control system;
[0090] The electromagnet driving circuit is connected to an electromagnetic induction coil 11 through an electromagnet control switch;
[0091] The electromagnetic heater driving circuit is driven and connected to the same electromagnetic induction coil 11 through an electromagnetic heater control switch;
[0092] The electromagnetic heater and the electromagnet device share the same electromagnetic induction coil 11;
[0093] The control system controls the electromagnetic heater control switch and the electromagnet control switch respectively;
[0094] The control system controls the electromagnetic heater control switch and the electromagnet control switch, and starts them alternately;
[0095] The start-up time of the electromagnetic heater drive circuit is 0.2 to 0.5 seconds, and the frequency of the alternating current output by the electromagnetic heater drive circuit is 20 to 30 kHz;
[0096] The start-up time of the electromagnet drive circuit is 0.3 to 0.5 seconds, and the alternating frequency output by the electromagnet drive circuit to reverse the polarity of the magnetic field is 10 to 20 Hz;
[0097] A fragmented glass fiber mesh 2 is also provided.
[0098] The glass fiber mesh 2 has warp threads 21 and weft threads 22, and both the warp threads 21 and the weft threads 22 are made of glass fibers;
[0099] The glass fiber as one of the warp yarns 21 and the weft yarns 22 has a composite layer of ferrosoferric oxide powder;
[0100] The glass fiber as the other of the warp yarns 21 and the weft yarns 22 has a composite layer of graphite powder;
[0101] The implementation method of power curing adhesive at the power construction site includes the following steps:
[0102] Step S1, dust removal: using compressed air to blow the cable holes to be foamed and sealed to remove the dust in the cable holes to be foamed and sealed;
[0103] Step S2, oil cleaning: spray the cable holes to be foamed and sealed with a self-volatile oil removal spray, let it stand for 10 to 15 minutes, and then use compressed air again to remove the remaining spray from the cable holes to be foamed and sealed;
[0104] Step S3, hot air dehumidification: prepare a hot air device, inject hot air into the cable holes to be foamed and sealed for 3 to 5 minutes to remove moisture from the cable holes to be foamed and sealed;
[0105] Step S4, mixing glass fiber mesh 2 filler: controlling the weight ratio of component A and glass fiber mesh 2 to be 5:1 to 3:1, stirring evenly to obtain a mixture;
[0106] Step S6, mixing the glue: the mixed material and component B are mixed in a volume ratio of 5:1 to 10:1, and the stirring time is controlled within 2 minutes; after stirring evenly, a mixed colloid is obtained;
[0107] Step S7, glue injection: remove the glue cartridge of the electric glue machine, pour the mixed glue into the glue cartridge, load the glue cartridge onto the electric glue machine, squeeze the glue cartridge with the electric glue dispenser, and inject the mixed glue in the glue cartridge into the deep of the cable hole to be foamed and sealed by pressure;
[0108] Step S8, temperature-controlled foaming and vibration curing: start the implementation equipment 1;
[0109] The implementation equipment 1 has a working process of alternately turning on the electromagnetic heater and the electromagnet device, and uses a magnetic field induction heating method to heat and foam the mixed colloid injected deep into the cable hole in step S7. When the handheld implementation equipment 1 is used to heat the mixed colloid, the electromagnetic heater is close to the mixed colloid at a distance of 3 to 5 cm;
[0110] In the glass fiber mesh 2, the glass fibers bonded with graphite powder have electrical conductivity, and the glass fibers bonded with soft magnetic material powder have soft magnetic properties, which can introduce the magnetic field deep into the mixed colloid, forming a relatively uniform magnetic field distribution in the mixed colloid, thereby making the conductive glass fibers relatively uniformly heated, thereby controlling the foaming speed of the curing glue;
[0111] The implementation equipment 1 also has a working process of turning on the electromagnet device, and the electromagnet device is placed 2 to 5 cm close to the periphery of the cable hole to be foamed. The magnetic field of the electromagnet device interacts with the warp 21 or weft 22 bonded with ferroferric oxide powder in the glass fiber mesh 2, driving the glass fiber mesh 2 to vibrate in the mixed colloid, playing the role of stirring the mixed colloid, causing the cross-linking agent and the water molecules in the curing glue to react chemically to form a three-dimensional cross-linked stereo structure, thereby accelerating the curing speed of the curing glue.
[0112] In this embodiment, during on-site construction, firstly, the glass fiber mesh 2 in a fragmented form is mixed into the component A of the electrically curing adhesive.
[0113] When drawing, the glass fiber used as one of the warp threads 21 and the weft threads 22 passes through a space in the air where graphite dust is floating, and adheres to the graphite powder to form a firmly bonded composite layer of graphite powder; when drawing, the glass fiber used as the other of the warp threads 21 and the weft threads 22 passes through a space in the air where ferroferric oxide powder dust is floating, and adheres to the ferroferric oxide powder to form a firmly bonded composite layer of ferroferric oxide powder.
[0114] The presence of the conductive material in the composite layer of glass fiber creates a conductive path on its surface, giving it conductive properties and enabling it to generate eddy currents through electromagnetic induction, thereby generating heat. Before curing, the mixed colloid is in a fluid state, with the fragmented glass fiber mesh dispersed and suspended in the colloid, without contact. Therefore, after the mixed colloid cures, the conductive glass fibers are dispersed and isolated, unable to connect in series to form a conductive path. As a result, the cured colloid is insulating overall.
[0115] The ferrosoferric oxide powder has soft magnetic properties in the mixed colloid, which can introduce the magnetic field of the electromagnetic heater into the deep of the mixed colloid, forming a relatively uniform magnetic field distribution in the mixed colloid, thereby making the conductive glass fiber in the mixed colloid relatively uniformly heated, thereby controlling the foaming speed of the curing glue.
[0116] The beneficial effect of implementing step S1 of the method is to remove dust on the cable surface and deep in the cable hole, so that the cable surface and cable hole after the dust is removed are in closer contact with the cured adhesive.
[0117] The beneficial effect of implementing step S2 of the method is to remove the oil, colloid residue and other substances that may remain in the cable hole to be foamed and sealed, so that the bond between the cable hole to be foamed and sealed and the cured adhesive is more firmly established.
[0118] The beneficial effect of implementing step S3 of the method is to remove moisture from the cable holes and prevent the cured adhesive from experiencing quality problems such as aging and cracking after long-term use.
[0119] The beneficial effect of implementing step S4 of the method is that the fragmented glass fiber mesh is doped with component A, and the cured adhesive doped with the fragmented glass fiber mesh can be subjected to non-contact heating and foaming, and vibration stirring and curing by the implementing equipment 1.
[0120] The beneficial effect of implementing step S6 of the method is that the components A and B of the curing adhesive are fully stirred so that the two components start to enter the foaming and curing reaction process after mixing.
[0121] The beneficial effect of implementing step S7 of the method is that, by adopting the extrusion injection method, the curing glue can be injected deep into the cable hole, achieving a better sealing effect.
[0122] The beneficial effect of implementing step S8 of the method is that an electromagnetic heater is used to control the conductive mixed colloid to generate eddy current and heat, thereby controlling the foaming speed to achieve controllable foaming speed. The fragmented glass fiber mesh 2, as the other of the warp 21 or the weft 22, has a composite layer of ferroferric oxide powder. The ferroferric oxide powder is magnetic and can drive the glass fiber mesh 2 to vibrate under the action of an alternating magnetic field. Its beneficial effect is that the vibration of the glass fiber mesh 2 can play a stirring role, so that the crosslinking agent component of the curing glue and the water molecules can get better contact and then chemically react to form a three-dimensional crosslinked structure, thereby accelerating the curing speed of the curing glue. In addition, the vibration of the glass fiber mesh 2 can also make the contact between the glass fiber mesh 2 and the curing glue more firm and eliminate surface tension.
[0123] In step S8, the electromagnetic heater and the electromagnetic magnetic field are operated alternately, and the magnetic field is started to vibrate the glass fiber mesh 2 while heating the mixed colloid. This implementation method allows the electric solid glue to foam rapidly while the cross-linking agent also reacts chemically with water molecules quickly to form a three-dimensional cross-linked structure, achieving more uniform foaming and curing of the electric solid glue and better sealing effect.
[0124] In this embodiment, the function of the alternating frequency of the magnetic polarity reversal output by the electromagnet drive circuit is to drive the glass fiber mesh 2 to vibrate, so as to achieve stirring, remove bubbles, and make the mesh and the colloid contact more firmly. The glass fiber mesh 2 is doped in the mixed colloid, and its excessive vibration will be eliminated by the colloid. Therefore, there is no need for the vibration frequency to be too high. The frequency of the magnetic polarity reversal is maintained at 10Hz~20Hz, which is sufficient to meet the vibration needs without consuming too much energy.
[0125] Furthermore, the power of the electromagnetic heater driving circuit is 50WHz-200W.
[0126] In this embodiment, the power output by the electromagnetic heater driving circuit is controlled at 50 to 200 watts, which can keep the temperature of the curing glue from rising too high, thereby promoting the foaming speed without destroying the colloidal components of the curing glue due to excessive temperature.
[0127] Example 2, reference Figure 3 As shown, gas storage particles 3 that can be detonated by a combination of an induced magnetic field and magnetic force are also provided;
[0128] The gas storage particle 3 has an airtight rubber bladder 31, which is filled with air at a pressure of 1.35 to 1.5 atmospheres, and the humidity of the filled air is maintained at 80 to 90%.
[0129] The volume of gas storage particles 3 is 3mm 3 ~5mm 3 ;
[0130] A steel sheet 32 with an obtuse angle is provided in the rubber bladder 31. The volume of the steel sheet 32 accounts for 1 / 5 to 1 / 8 of the volume of the gas storage particles. The steel sheet is adhered to the inner wall of the rubber bladder 31 by an adhesive.
[0131] Between step S4, mixing the glass fiber mesh 2 filler and step S6, mixing the glue, add step S5, mixing the gas storage particles 3 filler: control the mixed material and the gas storage particles 3 to be mixed in a volume ratio of 5:1 to 3:1, and stir until uniform to obtain a secondary mixed material as the mixed material.
[0132] In this embodiment, the polyvinyl chloride rubber bubble has good mechanical strength, high elasticity and plasticity at room temperature. When the gas storage particles and the mixed colloid are mixed and stirred, the rubber bubble 31 is easy to deform, but not easy to break and will not be punctured by the steel sheet.
[0133] Example 3 also includes step S9, composite detonation of gas storage particles 3: the implementation equipment is handheld and the electromagnetic heater and the electromagnet device are intermittently turned on and off. On the one hand, the conductive steel sheet 32 in the rubber capsule 31 of the gas storage particle 3 is induction heated by magnetic field induction heating. When the temperature of the steel sheet 32 rises to 130°C-140°C, the rubber capsule in contact with the steel sheet 32 softens and is easily stretched and ruptured under the action of internal air pressure; on the other hand, the steel sheet 32 pulls the inner wall of the rubber capsule 31 under the action of the electromagnet device, and the rubber capsule 31 is easily torn apart when the rubber capsule 31 is softened, thereby releasing more water molecules inside the cured glue. The water molecules react chemically with the cross-linking agent inside the cured glue to form a three-dimensional cross-linked network, thereby accelerating the curing speed of the cured glue.
[0134] In this embodiment, the electromagnetic heater and the electromagnet device have a dual function, which has the beneficial effect of making it easier for the rubber capsule 31 to burst, thereby releasing a large amount of water molecules and cross-linking agents to react chemically, thereby accelerating the curing speed of the solid glue.
[0135] In Example 4, a production device for preparing gas storage particles 3 includes a workbench, a grid plate is provided on the workbench surface, an airtight cavity is provided under the workbench surface, and the cavity is connected to an air pump;
[0136] The grid strip is fixedly connected to the top of the cavity;
[0137] A sealing shear is also provided below the grid strips. The sealing shear includes two shear blades. The two shear blades are close to the grid strips and are respectively provided on the left and right sides of the grid strips.
[0138] The two scissor blades are also provided with heating devices, which heat the two scissor blades to 150 degrees to 200 degrees;
[0139] The mesh of the grid slats meets the size requirements of the gas storage particles 3;
[0140] The preparation method of gas storage particles 3 is as follows:
[0141] Step 1: A polyvinyl chloride rubber film is placed on the grid strip plate to seal all grid holes on the grid strip; an air pump is started to form a negative pressure in the cavity, and the polyvinyl chloride rubber film is sunken into the cavity under the action of atmospheric pressure;
[0142] Step 2: Place the steel sheet 32 coated with adhesive into the mesh holes of the mesh strips so that the steel sheet 32 falls into the depression;
[0143] Step 3: The vacuum pump continues to operate, causing the polyvinyl chloride rubber membrane to swell continuously and form vesicles;
[0144] Step 4: Start the sealing shears to cut the vesicles formed by the polyvinyl chloride rubber film from the position close to the bottom of the grid strip, and simultaneously perform hot-melt sealing to form gas storage particles 3;
[0145] When the gas storage particles 3 are prepared, the air humidity in the preparation environment is controlled to be between 80% and 90%.
[0146] Reference Figure 1 As shown, the implementation equipment 1 includes a device housing, and a handheld handle is provided on the device housing;
[0147] An electromagnetic induction coil 11 is mounted on the device housing;
[0148] An electromagnet drive circuit and an electromagnetic heater drive circuit are arranged in the housing;
[0149] A control system is also provided in the shell, and the electric signal of the control system is connected to the electromagnet control switch and the electromagnetic heater control switch.
[0150] In this embodiment, the implementation equipment 1 is a handheld device used at the construction site. The implementation equipment 1 is equipped with an electromagnetic induction coil 11. By connecting the electromagnet drive circuit or the electromagnetic heater drive circuit, the function of heating the mixed colloid and the function of magnetically linked vibration of the glass fiber mesh 2 are respectively realized. The two functions share the same electromagnetic induction coil 11, which on the one hand saves manufacturing costs, and on the other hand reduces the size and weight of the equipment, making it easy to carry on site and saving effort during handheld operation.
[0151] Furthermore, in order to provide a concise description of the exemplary embodiments, all features of the actual embodiment may not be described, i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention.
[0152] It should be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.
[0153] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.
Claims
1. The implementation process of adjusting the curing glue at the power construction site is to prepare the power curing glue, which includes component A and component B; Component A includes resin matrix, foaming agent, flame retardant, plasticizer and filler; Component B includes a cross-linking agent, a catalyst, and a coupling agent; There is also an electric glue machine, which has a glue cylinder for accommodating the glue. Its characteristics are: There is also an implementation device for the controllable foaming and curing of the power curing adhesive, which has an electromagnetic heater for heating the power curing adhesive and an electromagnet device for magnetically linking the magnetic material; The implementation equipment also includes an electromagnet drive circuit, an electromagnetic heater drive circuit, and a control system; The electromagnet driving circuit is driven and connected to an electromagnetic induction coil through an electromagnet control switch; The electromagnetic heater driving circuit is driven and connected to the same electromagnetic induction coil through an electromagnetic heater control switch; The electromagnetic heater and the electromagnet device share the same electromagnetic induction coil; The control system controls the electromagnetic heater control switch and the electromagnet control switch respectively; The control system controls the electromagnetic heater control switch and the electromagnet control switch, and starts them alternately; The start-up time of the electromagnetic heater drive circuit is 0.2 seconds to 0.5 seconds, and the frequency of the alternating current output by the electromagnetic heater drive circuit is 20-30kHz; The start-up time of the electromagnet drive circuit is 0.3 seconds to 0.5 seconds, and the alternating frequency output by the electromagnet drive circuit to reverse the polarity of the magnetic field is 10 to 20 Hz; Fragmented fiberglass mesh is also available. The glass fiber mesh has warp and weft, and both the warp and weft are made of glass fiber; The glass fiber as one of the warp and weft has a composite layer of ferroferric oxide powder; The glass fiber, which is another of the warp and weft yarns, has a composite layer of graphite powder; The implementation method of power curing adhesive at the power construction site includes the following steps: Step S1, dust removal: using compressed air to blow the cable holes to be foamed and sealed to remove the dust in the cable holes to be foamed and sealed; Step S2, oil cleaning: spray the cable holes to be foamed and sealed with a self-volatile oil removal spray, let it stand for 10 to 15 minutes, and then use compressed air again to remove the remaining spray from the cable holes to be foamed and sealed; Step S3, hot air dehumidification: prepare a hot air device, inject hot air into the cable holes to be foamed and sealed for 3 to 5 minutes to remove moisture from the cable holes to be foamed and sealed; Step S4, mixing glass fiber mesh filler: controlling the weight ratio of component A and glass fiber mesh to be 5:1 to 3:1, stirring evenly to obtain a mixture; Step S6, mixing the glue: the mixed material and component B are mixed in a volume ratio of 5:1 to 10:1, and the stirring time is controlled within 2 minutes; after stirring evenly, a mixed colloid is obtained; Step S7, glue injection: remove the glue cartridge of the electric glue machine, pour the mixed glue into the glue cartridge, load the glue cartridge onto the electric glue machine, squeeze the glue cartridge with the electric glue dispenser, and inject the mixed glue in the glue cartridge into the deep of the cable hole to be foamed and sealed by pressure; Step S8, temperature-controlled foaming and vibration curing: start the implementation equipment; The implementation equipment has a working process of alternately turning on the electromagnetic heater and the electromagnet device, and uses magnetic field induction heating to heat and foam the mixed colloid injected deep into the cable hole in step S7. When the handheld implementation equipment heats the mixed colloid, the electromagnetic heater is close to the mixed colloid at a distance of 3 to 5 cm; the electromagnet device is brought 2 to 5 cm close to the outer periphery of the cable hole to be foamed to accelerate the curing speed of the curing glue.
2. The process for adjusting and implementing curing adhesive at a power construction site according to claim 1, characterized in that: The power of the electromagnetic heater drive circuit is between 50 and 200W.
3. The process for adjusting curing adhesive at a power construction site according to claim 1, characterized in that: Gas storage particles that can be detonated by a combination of induced magnetic field and magnetic force are also available; The gas storage particles have an airtight rubber bladder, and the air humidity in the rubber bladder is maintained at 80% to 90%; The volume of gas storage particles is 3mm 3 ~5mm 3 ; A steel sheet with an obtuse angle is placed inside the rubber bladder. The volume of the steel sheet accounts for 1 / 5 to 1 / 8 of the volume of the gas storage particles. The steel sheet is adhered to the inner wall of the rubber bladder by an adhesive. Between step S4 and step S6, step S5 is added, wherein the gas storage particle filler is mixed: the mixed material and the gas storage particles are mixed in a volume ratio of 5:1 to 3:1, and stirred until uniform, to obtain a secondary mixed material as the mixed material.
4. The process for adjusting curing adhesive at a power construction site according to claim 3, characterized in that: The method further includes step S9, gas storage particle composite detonation: using the implementation equipment by hand, and intermittently and alternately turning on the electromagnetic heater and the electromagnetic device.
5. The process for adjusting curing adhesive at a power construction site according to claim 3, characterized in that: The production equipment for preparing gas storage particles includes a workbench, a grid strip plate is provided on the workbench surface, an airtight cavity is provided under the workbench surface, and the cavity is connected to an air pump; The grid strip is fixedly connected to the top of the cavity; A sealing shear is also provided below the grid strips. The sealing shear includes two shear blades. The two shear blades are close to the grid strips and are respectively provided on the left and right sides of the grid strips. The two scissor blades are also provided with heating devices, which heat the two scissor blades to 150 degrees to 200 degrees; The mesh of the grid slats meets the size requirements of the gas storage particles; The preparation method of gas storage particles is as follows: Step 1: Covering the grid strip with a polyvinyl chloride rubber film to seal all grid holes on the grid strip; Start the vacuum pump to form negative pressure in the cavity, and the polyvinyl chloride rubber membrane sinks into the cavity under the action of atmospheric pressure; Step 2: Place the steel sheet coated with adhesive into the mesh holes in the mesh strips so that the steel sheet falls into the depression; Step 3: The vacuum pump continues to operate, causing the polyvinyl chloride rubber membrane to swell continuously and form vesicles; Step 4: Start the sealing shears to cut the vesicles formed by the polyvinyl chloride rubber film close to the bottom of the grid strips, and simultaneously perform hot-melt sealing to form gas storage particles; When preparing the above-mentioned gas storage particles, the air humidity of the preparation environment is controlled at 80% to 90%.
6. The process for adjusting curing adhesive at a power construction site according to claim 1, characterized in that: The implementation equipment includes a device housing, on which a handheld handle is provided; An electromagnetic induction coil is installed on the device casing; An electromagnet drive circuit and an electromagnetic heater drive circuit are arranged in the housing; A control system is also provided in the shell, and the electric signal of the control system is connected to the electromagnet control switch and the electromagnetic heater control switch.
Citation Information
Patent Citations
Rapid foaming fireproof and waterproof sealant for power cable
CN119242260A