Mobile irradiation platform for hollow body laminates and method for curing hollow body laminates

Abstract

The invention discloses a mobile irradiation platform, in particular for use in a pipe lining process for sewer or manhole repair, comprising: a chassis (11); one or more irradiation devices (12) mounted in the chassis (11) and configured to emit radiant energy and having a radiation direction extending radially to the longitudinal extent of the mobile irradiation platform (100); a plurality of stabilizing arms (13) hinged to the chassis (11) and designed to support the chassis (11) in the interior center of the hollow body (1), and at least one dielectric sensor (15) attached to the end of one of the plurality of stabilizing arms (13) remote from the chassis and designed to detect changes in the dielectric properties in the environment of the stabilizing arm (13).

Description

Technical Field

[0001] This invention relates to a mobile irradiation platform equipped with a radiation energy source, which can be placed inside a flexible hollow body for curing laminates forming the hollow body wall. Furthermore, this invention relates to a method for curing laminates forming the hollow body wall by introducing radiation energy from the mobile irradiation platform. Background Technology

[0002] Piping systems, which are networks of adjacent hollow bodies such as pipe systems, conduit systems, or manhole systems, require repair when defects, cracks, or holes appear in the pipe walls. Repairs are particularly challenging in hard-to-reach piping systems, such as those laid underground, and it is crucial to ensure that the repairs are as durable and reliable as possible.

[0003] For example, in sewer systems, enhanced quality assurance is necessary to ensure that at least a portion or component of the repaired sewer system meets the target conditions required for a new sewer system. In addition to replacement methods, refurbishment methods, also known as lining methods, can be used in open-pit or trenchless construction for sewer system repair. The advantage of these methods is that they can be ideally performed without any surface excavation or underground intervention. Using lining, an entire pipe segment can be repaired along its entire length in a single operation, not just at a specific point. Lining methods use so-called inliners – lining laminates placed inside the existing pipe segment from the inside, forming a new inner wall for the existing sewer segment once installed.

[0004] Depending on the type, structure, and location within the sewer system, lining methods can be subdivided into: string lining, spiral winding lining, section lining, tight-fitting lining, and fitting lining. In fitting lining, one of the most relevant methods currently is the impregnation of a flexible tube made of a carrier material with an reactive resin. The flexible tube (also called a liner) is placed in a flexible state within the pipe section to be repaired and pressed firmly against the inner wall of the existing pipe using pneumatic or hydraulic methods. Localized energy input can be used to cure the reactive resin, resulting in a fitting liner that, after curing, forms a spigot-free plastic tube reinforced with the carrier material, serving as a new liner for the existing (defective) fitting.

[0005] Typical pipe linings often have a multi-layered wall structure, which can be formed by laminations of different layers. In addition to an inner membrane (optionally reinforced with styrene) made of high-density polyethylene or polyurethane and one or more outer membranes with or without a styrene barrier layer and with or without a fabric reinforcement layer, the intermediate layers of the lamination are cross-linked by energy input and form the actual composite layer of the pipe wall. A combination of a curable resin system and a carrier material is commonly used as the composite material. Depending on the curing system used, the installation method, and the substrate material, other components may be placed in the composite material, such as organic or inorganic fillers, corrosion inhibitors, reinforcing materials, and / or initiators that form reactive substances when energy is introduced into the pipe lining to initiate a curing chain reaction of the resin system (e.g., free radical or cationic polymerization).

[0006] Patent document DE 10 2015 122 313 A1 discloses a method for repairing pipes, wherein a curing device for curing a curable layer for curing a flexible liner in a pipe is controlled based on a temperature measured outside the curable layer. Patent document DE 102016 124 116 A1 discloses an apparatus for curing a flexible liner impregnated with a high-energy radiation-cured resin, wherein the actual absorbed power of the UV radiation source is measured and maintained within a target range by power correction.

[0007] Determining with sufficient certainty the extent to which the pipe lining will cure during the curing process remains problematic. For process safety and quality reasons, the longest possible irradiation duration and intensity should be selected, even exceeding the actual required duration. On the other hand, there are also economic considerations, such as the need to maintain the lowest possible processing costs by reducing the energy demand for irradiation and the effective use of personnel. Because any weather conditions that could be unfavorable to successful repairs, such as heavy rain or thawing, it is also beneficial to ensure that the process time for completing the remedial work is as short as possible. Summary of the Invention

[0008] Therefore, one of the objectives of this invention is to provide a solution for more efficient and reliable pipe lining methods, including pipe linings used for field curing.

[0009] According to a first aspect of the invention, a mobile irradiation platform, particularly a mobile irradiation platform for pipe lining processes in sewer or manhole repair, comprises: a chassis; one or more irradiation devices mounted in the chassis and configured to emit radiant energy, having a radiation direction extending radially to a longitudinal extent of the mobile irradiation platform; a plurality of stabilizing arms hingedly connected to the chassis and designed to support the chassis at its internal center within a hollow body; and at least one dielectric sensor attached to an end of one of the plurality of stabilizing arms remote from the chassis and designed to detect changes in the dielectric properties of the environment in which the stabilizing arm is located.

[0010] According to a second aspect of the present invention, a sewer repair system includes: a pipe liner whose wall is formed of a hollow laminate having a composite layer that can be cured by ultraviolet light; and at least one mobile irradiation platform according to a first aspect of the present invention, having an ultraviolet light source as an irradiation device, and designed to cure the composite layer of the hollow laminate of the pipe liner from the inside out into a hollow body to form a liner for the sewer to be repaired.

[0011] A third aspect of the invention includes a method for curing hollow laminates, particularly for pipe lining processes in sewer or manhole repairs, comprising: placing a mobile irradiation platform inside a hollow laminate having a composite layer cured using radiation energy; supporting the mobile irradiation platform against the inner wall of the hollow laminate using stabilizing arms articulated to a chassis of the mobile irradiation platform; irradiating the hollow laminate with radiation energy from an irradiation device—e.g., an ultraviolet light source—mounted in the chassis; and detecting changes in the dielectric properties of the hollow laminate in the environment of the stabilizing arms by means of a dielectric sensor attached to the distal end of the chassis of one of the stabilizing arms.

[0012] One of the main ideas of this invention is to monitor the progress of the curing process in real time via sensors transported by a mobile irradiation platform during the irradiation of a hollow laminate to be cured on-site. Dielectric analysis is suitable for this purpose, where the dielectric properties of the hollow laminate and their changes during the curing process can be measured non-contactly using dielectric sensors. For this purpose, the dielectric sensors are attached near the hollow body wall to be formed and, due to their forward movement synchronized with the irradiation device, can provide measurement parameters that offer direct and immediate information about the irradiation effect.

[0013] According to some embodiments, the mobile irradiation platform may further include a process controller mounted in the chassis. In some embodiments, this process controller may be designed to dynamically adjust the operating parameters of the mobile irradiation platform, such as the forward speed inside the hollow laminate or the irradiation intensity of the irradiation device, based on the dielectric properties of the stabilizing arm environment detected by a dielectric sensor. This advantageously allows the lining process to be adapted to predominantly environmental conditions, thereby enabling the irradiation procedure to be performed more efficiently and time-savingly using the mobile irradiation platform without compromising reliability and product quality.

[0014] According to some further embodiments, the mobile irradiation platform may further include a platform controller mounted in the chassis. In some embodiments, the platform controller may be designed to collect and analyze measurement data acquired by the dielectric sensors. Particularly in the case of multiple dielectric sensors, it may be advantageous to centrally collect measurement data within the mobile irradiation platform and achieve synchronized and / or spatially resolved data evaluation. This allows for further understanding of the progress of the curing process, especially when using a platform train with multiple mobile irradiation platforms.

[0015] According to some further embodiments, the mobile irradiation platform may further include a data interface coupled to the platform controller. The data interface allows measurement data collected by the platform controller from dielectric sensors to be transmitted to devices external to the platform, such as an external working computer for a sewer repair system. This has the advantage that users of the mobile irradiation platform can utilize better and more convenient real-time monitoring, and, in the event of deviations from standards, manually make appropriate corrections to the irradiation process, or more quickly eliminate any errors occurring in the field. In some embodiments, the data interface may include a wireless communication module, thereby providing wireless connectivity between the mobile irradiation platform and external devices.

[0016] According to some further embodiments, the mobile irradiation platform may further include casters connected to the distal end of the chassis of a plurality of stabilizing arms. This provides the advantage of being able to easily, energy-efficiently, and without damaging the laminate, advance the mobile irradiation platform into the interior of the hollow laminate.

[0017] According to some embodiments of the method, the method may further include the step of dynamically adjusting the operating parameters of the moving irradiation platform based on changes in the dielectric properties of the hollow laminate in the stable arm environment detected by a dielectric sensor. Here, for example, the forward speed of the moving irradiation platform, the irradiation intensity of the irradiation device, or other irradiation-related parameters of the moving irradiation platform can be adjusted to advantageously increase irradiation efficiency and reduce the time required to cure the hollow laminate, without compromising the quality and reliability of the curing process used to produce high-quality hollow laminates.

[0018] According to some further embodiments of the method, the method may further include the step of wirelessly transmitting measurement data detected by the dielectric sensor to an external device outside the hollow laminate via a data interface of a mobile irradiation platform.

[0019] Where appropriate, the above embodiments and developments can be combined with each other in any form. Other possible embodiments, developments, and implementations of the invention also include combinations of features of the invention not explicitly mentioned above or below with respect to exemplary embodiments. In particular, those skilled in the art will also add individual aspects herein as improvements or supplements to the corresponding basic forms of the invention. Attached Figure Description

[0020] The present invention will now be explained in detail with the aid of exemplary embodiments provided in the schematic diagrams, wherein:

[0021] Figure 1 A perspective example view of a mobile irradiation platform with an irradiation device according to an embodiment of the present invention is shown;

[0022] Figure 2 A schematic block diagram of a mobile irradiation platform with an irradiation device according to another embodiment of the present invention is shown, the mobile platform being used inside a hollow laminate;

[0023] Figure 3 Another embodiment of the invention is shown for use according to... Figure 1 A schematic block diagram of the circuit for the dielectric sensor in a mobile irradiation platform of type 2; and

[0024] Figure 4 A flowchart of a method for curing a hollow laminate according to another embodiment of the present invention is shown.

[0025] The accompanying drawings are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, together with the specification, serve to explain the principles and concepts of the invention. Other embodiments and numerous advantages cited will be noted in the accompanying drawings. Figure 1 And presented. The elements in the accompanying drawings are not necessarily shown to scale relative to each other. Terms indicating direction, such as “at the top,” “at the bottom,” “on the left,” “on the right,” “above,” “below,” “horizontally,” “vertically,” “in front,” “behind,” and similar expressions, are for illustrative purposes only and are not intended to limit generality to the specific configuration shown in the figures.

[0026] In the accompanying drawings, identical elements, features, and parts having the same function and effect are given the same reference numerals unless otherwise specified. Detailed Implementation

[0027] The hollow laminate material in this invention comprises a layer system formed in the surface of an outer peripheral shell open on at least one side, which forms the hollow wall of an elongated hollow body with a closed inner cavity. The hollow laminate can be formed, for example, in the form of a hollow cylinder, hollow beam, or tube. In particular, by selecting the material of the layer system, the hollow laminate can be at least partially flexible in its initial form, i.e., forming a tube with at least partially flexible tubular walls. The cross-sectional profile of the hollow body formed by the hollow laminate can take any shape, particularly a circular profile, an oval profile, an elliptical profile, or a convex polygonal profile with rounded corners. The cross-sectional profile of the hollow body formed by the hollow laminate can also vary along the longitudinal direction of the hollow body, for example, increasing or decreasing in average size, or having steps with varying cross-sections. In particular, the cross-sectional profile of the hollow body formed by the hollow laminate can be defined by the cross-sectional profile of an existing conduit to which the hollow laminate is placed.

[0028] Figure 1 A perspective example view of a mobile irradiation platform 100 with an irradiation device 12 is shown. Figure 2 A corresponding schematic block diagram of such a mobile irradiation platform 100 operating inside a hollow laminate 2 is shown. A mobile platform equipped with one or more irradiation devices, as defined in this invention, may also be referred to as a mobile irradiation platform.

[0029] like Figure 2 As shown, the hollow laminate 2, for example, a pipe liner used in a pipe lining process for the repair of sewers or manholes in an underground sewer system A, can have a multi-layered wall structure that solidifies to form a hollow body 1 when irradiated with energy input. After solidification, the hollow body 1 thus formed constitutes a socketless reinforced plastic pipe fitting as a new liner for an existing part of a piping system (e.g., underground sewer system A). In some variations, the wall thickness of the hollow body 1 thus formed can be between approximately 2 mm and 15 mm, and the nominal width can be between approximately 100 mm and 600 mm.

[0030] An optional inner liner 5 may be attached to the interior of the hollow wall of the hollow laminate 2. The inner liner 5 may be formed of, for example, high-density polyethylene or polyurethane, and may optionally be coated with styrene. The inner liner 5 serves to prevent contact with process water or water vapor during the curing of the laminate. After the tubular liner is completed, the inner liner 5 may remain in the hollow 1 as an inner tube wall. Optionally, the inner liner 5 may be removed after the curing process.

[0031] Composite layer 3 is sandwiched between outer membrane 4 and inner membrane 5. Composite layer 3 forms the central layer of hollow laminate 2. Composite layer 3 may include a combination of a curable resin system and a carrier material. For example, the resin system may include unsaturated polyester resin, vinyl ester resin, silicate resin, or epoxy resin. For example, the carrier material may include corrosion-resistant synthetic fibers or polymer fibers, such as polyamide, acrylonitrile polymer, polyethylene terephthalate, or polypropylene. In this process, large areas of needle-punched felt can be butt-jointed or overlapped to form the fitting liner. Alternatively, corrosion-resistant glass fibers, such as E-CR (calcium aluminosilicate) glass with reinforcing glass fibers, can be used in loose glass fiber cloth or fabric. To increase strength and stiffness, glass fiber wound fibers or fabrics made of glass fibers can be joined together in overlapping layers to form the fitting liner. A hybrid system of synthetic fibers and glass fibers, known as a sandwich system, can also be used to selectively adjust the strength and stiffness of the fitting liner by region or section.

[0032] In addition to the resin system and carrier material, other components may optionally be placed in the composite layer 3, such as organic or inorganic fillers, corrosion inhibitors, and / or reinforcing materials. The carrier material is impregnated with the resin system used, cooled and / or opaquely packaged according to the resin system, and released in-situ only during sewer repairs to activate the resin system. The resin system can be cured with different initiators that form active substances when energy is introduced into the pipe liner. Thermal initiation and photoinitiation can be used as curing methods. For this purpose, an irradiation energy source can be used, such as the controlled and localized injection of infrared and / or ultraviolet radiation into the composite layer 3. In thermal curing, for example, a thermally initiated curing chain reaction at 70°C to 100°C results in, depending on the thermal initiator used, free radical or cationic polymerization, leading to complete curing of the composite layer 3, and thus also complete curing of the hollow laminate 2. Similarly, if a photoinitiator is embedded in the composite layer 3, the input of UV radiation energy can lead to free radical or cationic polymerization and subsequently cure the hollow laminate 2. The typical curing time is a few minutes, for example, about 2 to 15 minutes, especially about 4 to 10 minutes.

[0033] The outer membrane 4 can be attached to the outside of the hollow wall of the hollow laminate 2. The outer membrane 4 can also be formed of, for example, high-density polyethylene or polyurethane, and optionally has fabric reinforcement. The outer membrane 4 serves to prevent excess composite layer 3 from leaking from the hollow laminate 2 into the environment, while protecting the composite layer 3 from the physical and chemical effects of any residual fluids and solids transported in the piping system to be repaired.

[0034] A fabric-reinforced light-protective film 6 may optionally be applied around the outer membrane 4 as the outermost layer. The light-protective film 6 prevents the composite layer 3 from being prematurely activated by ambient light, especially in the case of a UV-activated composite layer 3. This greatly simplifies storage, transport, and placement in the pipe to be repaired.

[0035] The mobile irradiation platform 100 includes a central chassis 11, also referred to as a mounting frame or support frame. One or more irradiation devices 12 are housed or mounted in the chassis 11 and are designed to emit radiant energy B outward from the chassis 11. Specifically, the radiant energy B can be emitted radially outward from the irradiation device 12 and incident substantially perpendicularly onto the hollow laminate 2. The irradiation device 12 can be activated after the mobile irradiation platform 100 is placed inside the hollow laminate 2, for example inside a tubular liner, to trigger a curing reaction by locally applying energy to the composite layer 3 of the hollow laminate 2. Depending on the resin system used and the type of initiator present in the composite layer 3 (if any), various irradiation devices 12 can be used—thermal radiation sources, infrared lamps, or even UV light sources, such as UV laser diodes, UV light-emitting diodes, UV cold cathode tubes, black lights, or gas discharge lamps, such as high-pressure metal halide lamps or low-pressure metal halide lamps (e.g., based on sodium, cadmium, mercury, or other metal halides). The number, type, and combination of irradiation devices 12 are not limited in principle – more than one irradiation device 12 of the same or different design can be used. In particular, in the case of a mobile irradiation platform 100 for pipe linings, multiple irradiation devices 12 can be uniformly arranged around the axial direction of the mobile irradiation platform 100 in the longitudinal extension direction of the hollow laminate 2, thereby enabling radially uniform irradiation of the hollow laminate 2.

[0036] Chassis 11 can also accommodate appropriate electronic circuitry (not in) Figure 1 and Figure 2 (as clearly shown in the diagram), power supply, and / or control devices for operating the irradiation device 12. The mobile irradiation platform 100 can also be connected to a power source, such as a generator or power grid, outside the hollow laminate 2 via an electrical conductor, particularly an electrical conductor located outside the piping system to be repaired.

[0037] Stabilizing arms 13 are arranged on the chassis 11, for example, with wheels or casters 14 attached to their ends. Stabilizing arms 13 can be hinged to the chassis 11, thus allowing movement relative to the chassis 11. Stabilizing arms 13 can be used to support the mobile irradiation platform 100 against the inner wall of a pipe, sewer, manhole, or other cavity defined by the hollow laminate 2. By adjusting the stabilizing arms 13 accordingly, the central chassis 11 can preferably be held in a central and controllable position within the hollow laminate 2. This allows the irradiation device 12 to uniformly irradiate the hollow laminate 2 over its outer periphery.

[0038] With the aid of casters 14, the mobile irradiation platform 100 can move axially within the hollow laminate 2. For this purpose, the mobile irradiation platform 100 may have its own drive mechanism, or alternatively, it may be pushed or pulled through the interior of the hollow laminate 2 by an externally applied force. As an alternative to casters 14, other movement transmission end elements of the stabilizing arm 13 may be provided, such as low-friction coated slippers or sprockets.

[0039] like Figure 1 As shown, multiple mobile irradiation platforms 100 can be connected together to form a platform train. Figure 1 Two mobile irradiation platforms 100 in a platform train are schematically shown, but there may be more than two mobile irradiation platforms 100 in a platform train. The mobile irradiation platforms 100 of the platform train can be connected together using a traction cable 18. The traction cable 18 can not only adjust the mechanical coupling of the individual mobile irradiation platforms 100, but also provide electrical connections to transmit control signals or power between the individual mobile irradiation platforms 100.

[0040] The dielectric sensor 15 can be connected to one, some, or all of the stabilizer arms 13 at the end furthest from the chassis 11 (i.e., the end furthest from the chassis 11 after the stabilizer arms 13 are deployed). For example, Figure 1 and Figure 2 All images show four stabilizing arms 13 of the mobile irradiation platform 100 equipped with dielectric sensors 15 – however, it should be clear that any other number of dielectric sensors 15 could also be present. Each dielectric sensor 15 includes a sensor housing (not explicitly shown) and active sensor components, whose circuitry is... Figure 3 An exemplary block diagram is shown in more detail.

[0041] The dielectric sensor 15 operates by measuring the reflectivity of a capacitor C, which changes due to variations in the dielectric properties of the environment surrounding the capacitor C. The capacitance of the capacitor C depends not only on its geometry and the dielectric constant in vacuum but also on the dielectric constant in the capacitor's environment. Specifically, for a plate capacitor with electrodes interlaced in an extended plane of the capacitor plates, the boundary electric field extends away from the capacitor plates into the environment. When the dielectric properties of the environment change at a typical distance d from the active measurement surface of the dielectric sensor 15, the reflection behavior of the AC voltage at the capacitor C also changes. Planar electrode configurations can be used to measure the capacitor C, some of which are based on a single-electrode design and are characterized by large electrode distances, enabling reliable detection of changes in the dielectric constant even at greater distances.

[0042] An AC voltage F of a specific frequency and amplitude is applied to a measuring capacitor C using a sensor control device P. The voltage is then applied to the measuring capacitor C using the sensor control device. The actual AC voltage output is measured via the input directional coupler SE of the sensor interface S, and its frequency and amplitude are determined in the sensor control device P. After the AC voltage wave is reflected at the measuring capacitor C, a portion of the reflected AC voltage wave is also measured via the output directional coupler SR of the sensor interface S, and its frequency and amplitude are determined in the sensor control device P. The ratio between the input and returned AC voltage waves is determined by the sensor control device P as a time-resolved measurement parameter.

[0043] The hollow laminate 2 has a certain viscosity in its initial flexible state. The dipoles contained in the composite layer 3, such as monomer end groups of the resin system, can align to a certain extent in an electric field. When the temperature increases—for example, when irradiated by the irradiation device 12—ion mobility and the degree of dipole alignment begin to increase. Only when polymerization begins through free radical or cationic crosslinking does ion mobility decrease again, and the possibility of dipole alignment is severely limited. Therefore, in the fully crosslinked state, the ionic viscosity increases significantly, and the dipole alignment decreases significantly.

[0044] For example, the sensor control device P can be implemented as a software-defined radio (“SDR”) system, where the hardware for characterizing the input and return AC voltage waves includes amplifiers, downsamplers, and analog-to-digital converters (ADCs). For instance, high-frequency AC voltage waves, ranging from hundreds of MHz to several GHz, are down-mixed to baseband in the range of several kHz and digitized. The sensor control device P also includes a signal processor, such as an ASIC or FPGA, where digital evaluation of the digitized baseband measurement signal is performed via an application program.

[0045] The reflection coefficient, the ratio between the returned and incoming AC voltage waves, is a particularly suitable measurement parameter. After the curing process begins, the reflection coefficient will decrease because the viscosity of composite layer 3 decreases due to heating. Subsequently, after reaching a minimum, the reflection coefficient will increase as the curing reaction begins. At some point, a plateau region will be reached where the reflection coefficient no longer changes, or at least no longer changes significantly, because the complete curing of composite layer 3 has been achieved.

[0046] Therefore, the progress of the curing reaction caused by irradiation from the irradiation device 12 can be time-resolvedly assessed using the dielectric sensor 15, which is positioned at the laminate-side end of the stabilizing arm 13 and thus only a small measurement distance d from the hollow laminate 2. Specifically, a threshold for the change in reflectance can be set in the sensor control device P; a value below this threshold indicates that the composite layer 3 is sufficiently and completely cured, thereby ensuring that the hollow laminate 2 is sufficiently and completely cured to form the hollow body 1.

[0047] In this configuration, the measurement parameters of the dielectric sensor 15 can be processed and evaluated on-site, either within the sensor 15 itself, in the platform control unit 16 located in the chassis 11, or in a measurement computer (e.g., a working PC for a mobile sewer repair system) located outside the mobile irradiation platform 100. For this purpose, the platform control unit 16 can collect measured data from the various dielectric sensors 15 of the mobile irradiation platform 100 and transmit it to the outside of the wiring system via an external data interface 19. The external data interface 19 can be wired, for example. Alternatively or additionally, a wireless communication module can be used as the external data interface 19, through which measurement data can be wirelessly transmitted from the platform control unit 16 to an external working PC, for example via WLAN or a radio connection. In particular, the platform control unit 16 can also perform the conversion of analog measurement data to digital measurement signals, as the transmission of digital signals improves electromagnetic compatibility and is protected from interference, such as regarding the control of the power supply or irradiation device 12.

[0048] The mobile irradiation platform 100 may include a process control device 17, which is also attached to the chassis 11 and coupled to the platform control unit 16. For example, the process control device 17 may dynamically adjust the forward movement of the mobile irradiation platform 100, the instantaneous irradiance of the irradiation device 12, or other parameters related to the irradiation of the hollow laminate 2, based on the degree of curing of the hollow laminate 2 as determined by the dielectric sensor 15. For example, if the curing of the hollow laminate 2 has been partially completed before the mobile irradiation platform is actually scheduled to continue moving, it may be possible to increase the moving speed of the mobile irradiation platform 100. The irradiance of the irradiation device 12 may also be increased or decreased based on the local curing rate determined by the dielectric sensor 15. Furthermore, the measurement parameters detected by the dielectric sensor 15 can be used for quality assurance, for example, to provide evidence of compliance with standards during the curing of the hollow laminate 2.

[0049] The evaluation of the measurement parameters of the dielectric sensor 15 and the control of the mobile irradiation platform 100 can also be performed entirely outside the circuit system. For this purpose, the movement and operation characteristics of the mobile irradiation platform 100 can be dynamically adjusted by a control computer located outside the hollow laminate 2 via corresponding control signals, based on the degree of curing of the hollow laminate 2 as determined by the dielectric sensor 15.

[0050] Figure 4 A flowchart of process M for curing hollow laminate 2 is shown, particularly for repair work on piping system A. Process M can be used as part of a pipe lining process, for example, in sewer or manhole repair. For example, method M can be performed using a mobile irradiation platform, such as mobile irradiation platform 100, or in combination with... Figure 1 , 2 The platform train shown and described in Figure 3.

[0051] First, a hollow laminate with a radiation-reactive composite layer is prepared, for example, by combining... Figure 1 and 2 The hollow laminate 2, as explained, is used to house the mobile irradiation platform 100. For example, in the process of sewer repair, a pipe liner can be placed inside the pipe to be repaired. This can be accomplished through a withdrawal process, a reverse process, or a combination of both. In the withdrawal process, the hollow laminate 2 is pulled into the pipe to be repaired from the outside using a cable winch. In this case, a protective sliding foil can be installed at the bottom of the line before the withdrawal process. After withdrawal, the hollow laminate 2 can be hydraulically or pneumatically pressurized to create an inner cavity inside the hollow laminate 2, which is pressed against the inner wall of the pipe to be repaired. On the other hand, in the reverse process, the initial piece of the hollow laminate 2 can be pressed onto an opening in the pipe to be repaired and then hydraulically or pneumatically overpressed into the pipe.

[0052] Regardless of the placement method, after the hollow laminate 2 has been prepared, in the first step M1 of method M, one or even a train of multiple mobile irradiation platforms 100 is placed inside the cavity of the hollow laminate 2. This can also be accomplished, for example, by means of a winch. In the second step M2, the mobile irradiation platform 100 is supported on the inner wall of the hollow laminate 2 by means of a stabilizing arm 13 hinged to the chassis 11 of the mobile irradiation platform 100. For this purpose, the stabilizing arm 13, optionally equipped with casters 14, is folded away from the chassis 11 and contacts the inner wall of the hollow laminate 2 through its end away from the chassis. In this way, the chassis 11 can be positioned and stabilized approximately at the center of the cavity of the hollow laminate 2.

[0053] After the mobile irradiation platform 100 is correctly positioned, the hollow laminate 2 can be irradiated in the third step M3 using radiant energy from the irradiation device 12 mounted in the chassis 11. For example, the irradiation device 12 may include a UV light source that radiates UV light radially outward along a conduit. The radiant energy causes the initiation of a local curing reaction in the composite layer 3 of the hollow laminate 2. In the fourth step M4 of method M, changes in the dielectric properties of the hollow laminate 2 are detected in the environment of the stabilizing arm 13. This is accomplished by one or more dielectric sensors 15 connected to the far end of the chassis (i.e., furthest from the chassis 11 after the stabilizing arm 13 is deployed) of one or more stabilizing arms 13. For example, the dielectric sensor 15 may have a combination of Figure 3 The structure and corresponding operation are explained. Time-resolved local measurements of the dielectric properties of the hollow laminate 2 can be used to determine which curing stage the hollow laminate 2 is in.

[0054] Based on changes in the dielectric properties of the hollow laminate 2 detected by the dielectric sensor 15, the operating characteristics of the mobile irradiation platform 100, such as the forward speed or irradiation intensity of the irradiation device 12, can also be dynamically adjusted to the measured curing behavior. Measurement data from the dielectric sensor 15 or multiple sensors 15 can be transmitted to an external device outside the hollow laminate 2. This can be done, for example, via wired or wireless transmission through the data interface 19 of the mobile irradiation platform 100. The transmitted measurement data can be used, for example, for real-time monitoring of remedial processes and / or for recording purposes as part of quality assurance.

[0055] In the detailed description above, various features have been summarized in one or more examples to provide a more convincing representation. However, it should be clear here that the above description is purely illustrative and not restrictive. This description is intended to cover all alternatives, modifications, and equivalents of the various features and embodiments. Given the above description, many other examples will immediately become clear to those skilled in the art.

[0056] Embodiments have been selected and described to illustrate, as clearly as possible, the principles upon which the disclosure herein is based and their possible applications in practice. Therefore, those skilled in the art can optimally modify and use the disclosure herein and its various embodiments according to their intended purposes. In the claims and specification, the terms “containing” and “comprising” are used as linguistically neutral terms corresponding to the term “including.” Furthermore, the use of the terms “a,” “an,” and “one” is not intended to fundamentally exclude the plurality of features and components described thus.

Claims

1. A mobile irradiation platform (100), comprising: Chassis (11); One or more irradiation devices (12) are mounted in the chassis (11) and configured to emit radiant energy, and have a radiation direction that extends radially to a longitudinal range of the mobile irradiation platform (100); Multiple stabilizing arms (13) are hinged to the chassis (11) and designed to support the chassis (11) at the center inside the hollow body (1); as well as At least one dielectric sensor (15) is attached to the end of one of the plurality of stabilizer arms (13) away from the chassis and is designed to detect changes in the dielectric properties of the stabilizer arm (13) in the environment.

2. The mobile irradiation platform (100) according to claim 1 further includes: A process controller (17), mounted in the chassis (11), is designed to dynamically adjust the operating parameters of the mobile irradiation platform (100) based on the dielectric properties of the environment of the stabilizing arm (13) detected by the dielectric sensor (15). The operating parameters include the moving speed of the mobile irradiation platform (100) and the change in the dielectric properties of the environment of the stabilizing arm (13) detected by at least one dielectric sensor (15) when the mobile irradiation platform (100) moves at the moving speed.

3. The mobile irradiation platform (100) according to claim 1 or 2 further includes: A platform controller (16) is mounted in the chassis (11) and designed to collect and evaluate measurement data detected by the dielectric sensor (15).

4. The mobile irradiation platform (100) according to claim 3 further includes: A data interface (19) is coupled to the platform controller (16) and is designed to transmit measurement data of the dielectric sensor (15) collected by the platform controller (16) to a device outside the platform.

5. The mobile irradiation platform (100) according to claim 4, wherein the data interface (19) includes a wireless communication module.

6. The mobile irradiation platform (100) according to claim 1 or 2 further comprises: Casters (14) are connected to the far end of the chassis of the plurality of stabilizer arms (13).

7. The mobile irradiation platform (100) according to claim 1 or 2, wherein the one or more irradiation devices (12) include an ultraviolet light source.

8. A sewer repair system, comprising: The pipe liner, the wall of which is formed of a hollow laminate (2) having a UV-curable composite layer (3); and At least one mobile irradiation platform (100) according to claim 7 is designed to solidify the composite layer (3) of the hollow laminate (2) of the pipe liner into a hollow body (1) from the inside out, forming the liner of the sewer to be repaired.

9. A method for curing a hollow laminate (2), comprising: The mobile irradiation platform (100) is placed inside the hollow laminate (2) having a composite layer (3) cured using radiation energy; The mobile irradiation platform (100) is supported on the inner wall of the hollow laminate (2) by a stabilizing arm (13) hinged to the chassis (11) of the mobile irradiation platform (100). The hollow laminate (2) is irradiated with radiation energy from one or more irradiation devices (12) mounted in the chassis (11); as well as The change in dielectric properties of the hollow laminate (2) in the environment of the stabilizer (13) is detected by means of a dielectric sensor (15) attached to the far end of the chassis of one of the stabilizer arms (13).

10. The method according to claim 9, further comprising the step of dynamically adjusting the operating parameters of the irradiation platform (100) based on changes in the dielectric properties of the hollow laminate (2) in the environment of the stabilizing arm (13) detected by the dielectric sensor (15), the operating parameters including the moving speed of the moving irradiation platform (100) and changes in the dielectric properties of the environment in which the stabilizing arm (13) is located, detected by at least one dielectric sensor (15) when the moving irradiation platform (100) moves at the moving speed.

11. The method according to claim 9 or 10, further comprising the step of wirelessly transmitting measurement data detected by the dielectric sensor (15) to an external device outside the hollow laminate (2) via the data interface (19) of the mobile irradiation platform (100).

12. The method according to claim 9 or 10, wherein, The irradiation device (12) includes an ultraviolet light source.

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