Lining hose with curing hardness quantification

Abstract

The invention discloses a lining hose with curing hardness quantification, and relates to the technical field of lining hoses, a 105 DEG C thermochromic indicator is mixed in a photosensitive resin layer, when the temperature reaches 105 DEG C, the thermochromic indicator chemically reacts, the curing hardness of the photosensitive resin layer is quantified through color change, the color A is changed into the color B, and the color B is changed into the color B; and indicating completion of hardening of the photosensitive resin layer. According to the invention, the hardness of the lining hose is accurately quantified, the dependence on equipment is reduced, the photocuring is more thorough, the problem of non-thorough curing can be eliminated, and the engineering construction efficiency and the engineering construction quality are greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of lined hoses, and in particular relates to a lined hose with self-cured hardness quantification. Background Art

[0002] The UV in-situ curing repair process is to pull the lining hose material soaked in photosensitive resin into the original damaged pipe, inflate the lining hose material to fit tightly against the inner wall of the original damaged pipe, and use UV light to cure and harden the lining hose material to form a firm pipe-in-pipe structure, so that the damaged pipe can be repaired in situ without excavation.

[0003] The UV-CIPP lining hose has a certain thickness. In actual engineering construction, whether the UV-CIPP lining hose is fully cured, whether it is completely cured, and whether the hardness meets the engineering requirements is very important and determines the success or failure of the project. The solution of the existing technology is to judge whether it is completely cured by the temperature of the inner surface of the lining hose. Disadvantages of the existing technology: (1) A non-contact infrared sensor needs to be installed on the lamp stand. (2) The temperature resistance of the non-contact infrared sensor itself is another direction that needs to be technically tackled. At present, the price of non-contact infrared sensors used in UV-CIPP pipe curing and repair equipment is very expensive. (3) The data accuracy of non-contact infrared sensors in high temperature environments is not satisfactory. (4) In general, pipelines have deformation and fluctuations (affected by factors such as burial depth, backfill soil density, groundwater level, etc.). When the lamp stand is moving, the distance from the infrared sensor test point to the inner wall of the lining pipe changes in real time, and the changing temperature tested is not the real temperature at the same distance. (5) In order to realize the communication between multiple non-contact infrared sensors and the host computer, the integrated cable needs to increase in diameter and weight, and the cost and potential risks are increasing. (6) The host computer needs to add temperature acquisition equipment. (7) The human-machine interface needs to add a temperature window. (8) The hardness judgment requires manual real-time temperature monitoring. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art that non-contact infrared sensors are expensive, have low accuracy and large errors at high temperatures, and have complex operating systems, high costs, and low construction efficiency, and to propose a liner hose with self-curing hardness quantification. The liner hose with self-curing hardness quantification can accurately quantify the hardness of the liner hose, reduce dependence on equipment, make light curing more thorough, eliminate the problem of opaque curing, and greatly improve engineering construction efficiency and engineering construction quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A lined hose with self-quantified curing hardness is designed, comprising an outer UV protection film, a middle photosensitive resin layer and an inner film. The photosensitive resin layer is mixed with a 105°C thermochromic indicator. When the temperature reaches 105°C, the thermochromic indicator itself undergoes a chemical reaction to quantify the curing hardness of the photosensitive resin layer through color change, and the change from color A to color B indicates that the hardening of the photosensitive resin layer is completed.

[0007] Furthermore, the thermochromic indicator is a single color-changing irreversible thermochromic composition, and the mass ratio of the thermochromic indicator to the photosensitive resin is 10000:3.

[0008] Furthermore, the irreversible thermochromic composition is a mixture of potassium triiodide solution and copper monomers.

[0009] Furthermore, the irreversible thermochromic composition is a mixture of iodine and copper.

[0010] Furthermore, an anti-permeation layer is provided between the anti-ultraviolet film and the photosensitive resin layer.

[0011] Furthermore, the anti-permeation layer is a flexible rubber layer.

[0012] Furthermore, a wear-resistant layer is provided between the photosensitive resin layer and the inner film.

[0013] Furthermore, a glass fiber mesh is provided inside the photosensitive resin layer, and the interior of the glass fiber mesh is filled with photosensitive resin. A sponge layer is provided on the external side of the photosensitive resin layer, and the sponge layer is attached to the outside of the glass fiber mesh. The photosensitive resin is locked in the sponge layer, and a thorn is provided on the side of the glass fiber mesh corresponding to the sponge layer, and the end of the thorn is a spherical structure.

[0014] Furthermore, the depth of the thorns is less than the thickness of the sponge layer.

[0015] See also Figure 1 , the existing technology implementation means: install 3 infrared sensors on the curing equipment to measure the temperature of the inner surface of the material before curing (just cured), during curing, and after curing, and install a PT100 to measure the ambient temperature in the pipeline. Infrared probes 1 and 2 measure the temperature T1 and T2 of the 1# lamp holder after curing; infrared probe 3 measures the temperature T3 of the 2# lamp holder during curing; the PT100 temperature sensor measures the ambient temperature TP in the curing pipeline; the temperature value sequence in the first half is: T2>T3>T1>TP, the ambient temperature is low; the temperature value sequence in the second half is: T2>T3>TP>T1, the ambient temperature gradually increases. The verification conclusion of the existing technology can be found in Figure 2 .

[0016] Compared with the prior art, the present invention provides a liner hose with self-curing hardness quantification, which has the following beneficial effects: by adding a thermochromic indicator into the photosensitive resin layer, the photosensitive resin layer undergoes a chemical reaction and changes color when the temperature reaches 105°C, thus achieving accurate quantification of the hardness of the liner hose. Judging the hardening of the liner hose by color change has the following advantages:

[0017] (1) Reduce dependence on equipment.

[0018] (2) Eliminate the situation where solidification is not transparent due to inaccurate data collection.

[0019] (3) Prevent situations where the material cannot be tested and verified again after solidification.

[0020] (4) Achieve accurate hardness quantification at 105°C.

[0021] (5) Greatly improve the efficiency of engineering construction, because the calibration and maintenance of infrared temperature sensors are encountered almost every time.

[0022] (6) Greatly improve the quality of engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 A schematic diagram of the structure of a curing device in the prior art;

[0025] Figure 2 is a graph showing the curing temperature and hardness of the photosensitive resin layer in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the liner hose in Example 1 of the present invention;

[0027] Figure 4 is a schematic structural diagram of a photosensitive resin layer in Embodiment 2 of the present invention;

[0028] The markings in the figure are: 1. Anti-ultraviolet film; 2. Anti-penetration layer; 3. Photosensitive resin layer; 31. Glass fiber mesh; 32. Spikes; 4. Wear-resistant layer; 5. Inner membrane; 6. Sponge layer. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] The structural features of the present invention are now described in detail with reference to the accompanying drawings.

[0032] Example 1

[0033] See also Figure 3 A liner hose with self-curing hardness quantification includes an outer UV film 1, a middle photosensitive resin layer 3 and an inner film 5. In order to provide the liner hose with anti-seepage ability, an anti-permeation layer 2 is provided between the UV film 1 and the photosensitive resin layer 3. The anti-permeation layer 2 is a flexible rubber layer. The anti-permeation layer 2 made of flexible rubber has a certain anti-seismic effect on the premise of having good anti-permeation ability, which can absorb the impact outside the pipeline and improve the anti-seismic ability of the liner hose. In order to protect the photosensitive resin layer 3, a wear-resistant layer 4 is provided between the photosensitive resin layer 3 and the inner film 5. The wear-resistant layer 4 can be a transparent PVC layer. The photosensitive resin layer 3 is mixed with a 105°C thermochromic indicator. When the temperature reaches 105°C, the thermochromic indicator itself undergoes a chemical reaction, and the curing hardness of the photosensitive resin layer 3 is quantified by color change, from color A to color B, indicating that the photosensitive resin layer 3 is hardened. The thermochromic indicator is a single-color-changing irreversible thermochromic composition. The mass ratio of the thermochromic indicator to the photosensitive resin is 10000:3. The thermochromic indicator does not chemically react with the resin and other additives in the resin, and has no chemical correlation. The irreversible thermochromic composition can be a mixture of potassium triiodide solution and copper monomers, or a mixture of iodine and copper monomers. After testing, the indicator itself changes color without affecting any technical parameters of the UV-CIPP lined hose, including elastic modulus, bending strength, tensile strength, acid and alkali resistance, etc.

[0034] The liner hose with self-curing hardness quantification of the present invention adds a thermochromic indicator in the photosensitive resin layer so that when the photosensitive resin layer reaches 105°C, it undergoes a self-chemical reaction and changes color, thereby achieving accurate quantification of the hardness of the liner hose.

[0035] Specifically, when preparing the raw material of the photosensitive resin layer 3, the thermochromic indicator is fully mixed with the resin in proportion. This process does not increase the production process. When the resin is fully mixed and dispersed with other additives such as thickeners before rolling, the thermochromic indicator can be evenly mixed into the raw material of the photosensitive resin layer 3. When curing the photosensitive resin layer 3, the potassium triiodide solution of the thermochromic indicator and the copper monomer are heated to 105°C to generate irreversible yellow copper iodide, or the iodine element and the copper monomer are heated to 105°C to react to form colorless cuprous iodide. Under ultraviolet light, cuprous iodide forms irreversible yellow copper iodide. During the curing process, the color change of the lining hose is observed in real time through the imaging system. If the lining hose turns yellow, it means that the curing hardness meets the standard. Otherwise, it is necessary to reduce the curing speed or cure again until the lining hose turns yellow.

[0036] Example 2

[0037] Reference Figure 4 As another preferred embodiment of the present invention, the difference from the embodiment 1 is that a glass fiber mesh 31 is provided inside the photosensitive resin layer 3, and the inside of the glass fiber mesh 31 is filled with photosensitive resin. The glass fiber mesh 31 can enhance the strength of the photosensitive resin layer 3 after curing. A sponge layer 6 is provided on the side of the photosensitive resin layer 3 located outside. The sponge layer 6 is attached to the outside of the glass fiber mesh 31. The sponge layer 6 has inherent photosensitive resin locked inside. The sponge layer 6 can lock the photosensitive resin so that it is evenly distributed on the glass fiber mesh 31. A thorn 32 is provided on the side of the glass fiber mesh 31 corresponding to the sponge layer 6, and the end of the thorn 32 is a spherical structure. The depth of the thorn 32 is less than the thickness of the sponge layer 6. The setting of the thorn 32 can provide the light intensity inside the sponge layer 6 on the one hand, improve the light curing efficiency inside the sponge layer 6, and on the other hand, the sponge layer 6 and the glass fiber mesh 31 can form an integral structure after curing, which can improve the support strength of the lining hose.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liner hose with self-curing hardness quantification, comprising an outer UV protection film (1), a middle photosensitive resin layer (3) and an inner film (5), characterized in that: The photosensitive resin layer (3) is mixed with a 105°C thermochromic indicator. When the temperature reaches 105°C, the thermochromic indicator undergoes a chemical reaction to quantify the curing hardness of the photosensitive resin layer (3) through color change. The change from color A to color B indicates that the photosensitive resin layer (3) has completed hardening.

2. The liner hose with self-curing hardness quantification according to claim 1, characterized in that: The thermochromic indicator is a single color-changing irreversible thermochromic composition, and the mass ratio of the thermochromic indicator to the photosensitive resin is 10000:

3.

3. The liner hose with self-curing hardness quantification according to claim 2, characterized in that: The irreversible thermochromic composition is a mixture of potassium triiodide solution and copper monomers.

4. The liner hose with self-curing hardness quantification according to claim 2, characterized in that: The irreversible thermochromic composition is a mixture of iodine and copper.

5. The liner hose with self-curing hardness quantification according to claim 1, characterized in that: An anti-permeation layer (2) is provided between the anti-ultraviolet film (1) and the photosensitive resin layer (3).

6. The liner hose with self-curing hardness quantification according to claim 5, characterized in that: The anti-permeation layer (2) is a flexible rubber layer.

7. The liner hose with self-curing hardness quantification according to claim 1, characterized in that: A wear-resistant layer (4) is provided between the photosensitive resin layer (3) and the inner film (5).

8. The liner hose with self-curing hardness quantification according to claim 1, characterized in that: A glass fiber mesh (31) is provided inside the photosensitive resin layer (3), and the interior of the glass fiber mesh (31) is filled with photosensitive resin. A sponge layer (6) is provided on the side of the photosensitive resin layer (3) located outside, and the sponge layer (6) is attached to the outside of the glass fiber mesh (31). The photosensitive resin is locked inside the sponge layer (6). A thorn protrusion (32) is provided on the side of the glass fiber mesh (31) corresponding to the sponge layer (6), and the end of the thorn protrusion (32) is a spherical structure.

9. The liner hose with self-curing hardness quantification according to claim 8, characterized in that: The depth of the thorns (32) is less than the thickness of the sponge layer (6).

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