A curing apparatus and method for lining a tubular sample of a hose

Abstract

The application discloses a curing device and method for lining hose pipe sheet sample, which comprises a bottom die with a circular arc surface for laying the sheet sample of the lining hose impregnated with resin, a light-permeable sealing part for covering the sheet sample laid on the circular arc surface to make the sheet sample in a closed space, the bottom die and / or the sealing part being provided with a vacuum hole communicating with the closed space, and a UV lamp for irradiating the sheet sample to make the sheet sample cured under UV irradiation to form a pipe sheet. The application can directly cure the pipe sheet sample of the lining hose to make the pipe sheet sample very convenient to produce and the amount of the hose material small. The application also simulates the pressure of the lining hose in the pipe field curing by vacuum extraction, reduces the test deviation of the sample performance before and after construction, and facilitates engineering design and construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inner lining hose, in particular to a curing device and method for inner lining hose pipe sheet sample. BACKGROUND

[0002] The light-cured inner lining hose is a repair material for underground pipeline lining reinforcement made of ECR type glass fiber cloth and light-cured resin in the factory, which needs to be operated on the construction site, specifically, the inner lining hose immersed in resin is tightly attached to the original pipeline by inflating in the pipeline, and then the ultraviolet light is placed in the pipeline to make the inner lining hose ultraviolet light cured and formed. The "Urban Drainage Pipeline Non-excavation Repair Engineering Construction and Acceptance Regulations" T / CECS 717-2020 stipulates that the sample of the ultraviolet light cured inner lining hose must be cut into a pipe sheet shape on site and then sample preparation is carried out for mechanical property test. Therefore, after the inner lining hose is made in the factory, it also needs to be cured to form an arc-shaped sample and test the mechanical properties of the sample to reduce the deviation of the mechanical properties of the sample before and after construction. However, at present, whether on the construction site or in the factory, in order to obtain the inner lining hose pipe sheet sample, the inner lining hose needs to be cured into a circular pipe first, and then the pipe sheet sample is cut from the cured pipe, which has the disadvantages of complicated production and large amount of hose material. SUMMARY

[0003] The present application provides a curing device and method for inner lining hose pipe sheet sample, which makes the production of inner lining hose pipe sheet sample very convenient and reduces the amount of hose material.

[0004] The technical scheme adopted by the present application to solve the technical problem is: a curing device for inner lining hose pipe sheet sample, comprising:

[0005] a bottom mold, the bottom mold has a circular arc surface for laying a sheet sample of inner lining hose immersed in resin;

[0006] a light-transmissible sealing component, the sealing component is used to cover the sheet sample laid on the circular arc surface, so that the sheet sample is in a closed space, and the bottom mold and / or the sealing component is provided with a vacuum hole communicating with the closed space;

[0007] an ultraviolet light lamp for irradiating the sheet sample, so that the sheet sample is cured to form a pipe sheet under the irradiation of ultraviolet light.

[0008] Further, a sealing rubber strip is arranged on the circular arc surface of the bottom mold, the sealing rubber strip surrounds the periphery of the sheet sample laid on the circular arc surface, and the sealing component covers or extends to the sealing rubber strip.

[0009] Further, the sealing component is a transparent co-extrusion film, and the vacuum hole is arranged on the bottom mold.

[0010] Further, the bottom mold and the ultraviolet light are arranged in a curing box, the arc surface of the bottom mold faces upward, and the light emitting surface of the ultraviolet light faces the arc surface; the height of the bottom mold and / or the ultraviolet light can be adjusted in the curing box.

[0011] Further, the ultraviolet light is arranged on a lamp holder, and the curing box is provided with a plurality of first supports on the opposite inner sides, the first supports are distributed along the height direction of the curing box, and the first supports on one inner side correspond to the first supports on the other inner side one by one, and the opposite ends of the lamp holder are arranged on the corresponding two first supports.

[0012] Further, the inner side of the curing box is provided with a plurality of second supports, and the bottom mold is supported by the second supports.

[0013] Further, the bottom mold comprises an arc segment, the inner surface of the arc segment forms the arc surface, and the opposite ends of the arc segment are provided with outwardly extending fixing parts, the fixing parts correspond to the second supports one by one and are arranged on the corresponding second supports.

[0014] Further, the bottom mold is provided with a pressure detection hole communicating with the sealed space, and a pressure gauge is connected to the pressure detection hole; the bottom mold is provided with a pressure adjusting hole communicating with the sealed space, and a pressure adjusting switch is connected to the pressure adjusting hole.

[0015] Further, the vacuum hole is connected to a vacuum pump, and the ultraviolet light is connected to an ultraviolet light controller.

[0016] Further, the number of the bottom molds is a plurality, the diameters of the arc surfaces of the plurality of bottom molds are different, and a sheet-shaped sample of the inner lining hose immersed in resin is arranged on one of the plurality of bottom molds.

[0017] The application further provides a curing method of a sheet-shaped sample of an inner lining hose, comprising the following steps:

[0018] 1) sample cutting: cutting a sheet-shaped sample of an inner lining hose with a preset size and immersed in resin;

[0019] 2) sample laying: laying the sheet-shaped sample on the arc surface of a bottom mold;

[0020] 3) sample sealing: covering the sheet-shaped sample with a light-transmitting sealing part, so that the sheet-shaped sample is in a sealed space;

[0021] 4) vacuumizing: vacuumizing the air in the sealed space by a vacuumizing device;

[0022] 5) curing by light: irradiating the sheet sample with a UV light lamp to cure the sheet sample under UV irradiation to form a tube sheet.

[0023] Further, a sealing rubber strip is arranged on the arc surface of the bottom mold, the sealing rubber strip surrounds the sheet sample laid on the arc surface, and the sealing component covers or extends to the sealing rubber strip; the sealing component is a transparent co-extrusion film.

[0024] Further, the bottom mold and the UV light lamp are arranged in a curing box, the arc surface of the bottom mold faces upward, the light emitting surface of the UV light lamp faces the arc surface, and the height of the bottom mold and / or the UV light lamp can be adjusted in the curing box.

[0025] Further, the bottom mold is provided with a vacuum hole communicating with the sealed space, the vacuum device is connected to the vacuum hole in step 4); the bottom mold is provided with a pressure detection hole communicating with the sealed space, and step 4) further comprises: detecting the vacuum pressure in the sealed space by a pressure gauge connected to the pressure detection hole; the bottom mold is provided with a pressure adjusting hole communicating with the sealed space, and step 4) further comprises: adjusting the vacuum pressure in the sealed space by a pressure adjusting switch connected to the pressure adjusting hole.

[0026] Further, the UV light lamp is connected with a controller, and the power of the UV light lamp is adjusted by the controller.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The bottom mold, the light-transmissible sealing component and the UV light lamp are used to directly cure and form a tube sheet sample of the inner lining flexible tube, so that the tube sheet sample is very convenient to make, and the amount of the flexible tube material is small; the present application also simulates the pressure that the inner lining flexible tube receives when it is cured in the pipeline in situ by vacuumizing, so that the deviation of the sample performance before and after construction is reduced, and the engineering design and construction are facilitated.

[0029] 2. The sealing rubber strip is arranged on the arc surface of the bottom mold, the sealing rubber strip surrounds the sheet sample laid on the arc surface, and the sealing component covers or extends to the sealing rubber strip, so that the sealing effect of the sealed space can be improved by using the sealing rubber strip.

[0030] 3. The sealing component is preferably a transparent co-extrusion film, so that the sealing component can be attached to the upper surface of the sheet sample, and the sheet sample is pressed under the vacuum state, so that the sheet sample is tightly attached to the arc surface of the bottom mold, and the front pressure received by the sheet sample is improved.

[0031] 4、The application also includes a curing box, the bottom die and the ultraviolet light are put into the curing box, so that the ultraviolet light curing can be carried out in the curing box, the utilization rate of the ultraviolet light is improved, and the curing efficiency of the ultraviolet light is improved. In particular, the height of the bottom die and / or the ultraviolet light in the curing box can be adjusted, so that the irradiation distance of the ultraviolet light and the sheet-shaped sample can be adjusted.

[0032] 5、The ultraviolet light is arranged on a lamp holder, and the opposite ends of the lamp holder are respectively clamped on the two first supports, so that the height adjustment operation of the ultraviolet light is very convenient.

[0033] 6、The bottom die is also provided with a pressure detection hole and a pressure adjusting hole penetrating through the arc surface, so that the application can fully simulate the pressure received by the inner lining hose during on-site curing in the pipeline, and further reduce the deviation of the mechanical properties of the sample before and after construction.

[0034] 7、The number of the bottom die is several, the diameters of the arc surfaces of the several bottom dies are different, and one of the several bottom dies is used for laying the sheet-shaped sample of the inner lining hose immersed in resin, so that the application has strong universality, and various different size pipe sheet-shaped samples of the inner lining hose can be prepared according to actual needs.

[0035] The application will be further described in detail in combination with the drawings and embodiments; however, the inner lining hose pipe sheet-shaped sample curing device and method of the application is not limited to the embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a sectional view of the application of example one;

[0037] Figure 2 is a schematic view of the position relationship between several small diameter size bottom dies and the ultraviolet light of the application of example two;

[0038] Figure 3 is a schematic view of the position relationship between several medium diameter size bottom dies and the ultraviolet light of the application of example two;

[0039] Figure 4 is a schematic view of the position relationship between several large diameter size bottom dies and the ultraviolet light of the application of example two. DETAILED DESCRIPTION

[0040] Example one

[0041] Please refer to Figure 1 The inner lining hose pipe sheet-shaped sample curing device of the application includes:

[0042] A bottom die 1, the bottom die 1 has an arc surface 111, and is used for laying a sheet-shaped sample 4 of an inner lining hose immersed in resin

[0043] A light-transmissive sealing member is used to cover the sheet sample 4 laid on the circular arc surface 111, so that the sheet sample 4 is in a closed space. The bottom mold 1 and / or the sealing member is provided with a vacuum hole 112, i.e. a hole for vacuumizing, which communicates with the closed space.

[0044] An ultraviolet light lamp 3 is used to irradiate the sheet sample 4, so that the sheet sample 4 is cured under ultraviolet light irradiation to form a tube sheet.

[0045] In this embodiment, the circular arc surface 111 of the bottom mold 1 is provided with a sealing rubber strip 13, which surrounds the sheet sample 4 laid on the circular arc surface 111. The sealing member covers or extends to the sealing rubber strip 13. The sealing member is specifically a transparent co-extrusion film 2, but is not limited thereto. In other embodiments, the sealing member is a transparent cover which is adapted to the circular arc surface 111 or the sealing rubber strip thereon in periphery. The vacuum hole 112 is specifically provided on the bottom mold 1 and penetrates the circular arc surface 111.

[0046] In this embodiment, the present application further comprises a curing box 5, in which the bottom mold 1 and the ultraviolet light lamp 3 are placed. The circular arc surface 111 of the bottom mold 1 faces upward, and the light-emitting surface of the ultraviolet light lamp 3 faces the circular arc surface 111. The ultraviolet light lamp 3 is preferably located at the center of the circular arc surface 111. The curing box 5 is made of light-proof material and can be provided with transparent observation windows on the top wall and / or the side wall. The curing box 5 can be of a top-opening type or a side-door type, so as to facilitate the taking and placing of the bottom mold 1 and the ultraviolet light lamp 3. The general size of the curing box 5 is 750 mm in height and 630 mm in width. The height of the ultraviolet light lamp 3 in the curing box 5 can be adjusted, but is not limited thereto. In order to change the irradiation distance of the ultraviolet light lamp 3 to the sheet sample 4, the height of the bottom mold in the curing box can also be adjusted, or the height of both the ultraviolet light lamp and the bottom mold in the curing box can be adjusted.

[0047] In the embodiment, the ultraviolet lamp 3 is arranged on a lamp holder 6, and the curing box 5 is provided with a plurality of first supports 51 on the opposite inner sides, which are distributed along the height direction of the curing box 5, and the first supports 51 on one inner side correspond to the first supports 51 on the other inner side one by one, and the opposite ends of the lamp holder 6 are arranged on the corresponding two first supports 51. Therefore, by matching the ends of the lamp holder 6 with the first supports 51 of different heights, the irradiation distance of the ultraviolet lamp 3 to the sheet sample 4 can be adjusted. In order to facilitate lifting the lamp holder 6, an operating handle 61 is arranged on the lamp holder 6. In other embodiments, the lamp holder and / or the bottom mold are arranged in the curing box by a height adjusting mechanism, which may, for example, include a screw rod rotatingly connected in the curing box in the vertical direction, a sliding block fixedly connected with the lamp holder, and a motor, the screw rod is driven by the motor, and the sliding block is threadedly connected with the screw rod.

[0048] In the embodiment, the inner side of the curing box 5 is provided with a plurality of second supports 52, and the bottom mold 1 is supported by the second supports 52. The bottom mold 1 includes an arc-shaped section 11, the inner surface of the arc-shaped section 11 forms the circular arc surface 111, and the opposite ends of the arc-shaped section 11 are respectively provided with outwardly extending horizontal fixing portions 12, which correspond to the second supports 52 and are arranged on the corresponding second supports 52.

[0049] In the embodiment, the bottom mold 1 is also provided with a pressure detection hole 113 communicating with the sealed space, the pressure detection hole 113 is connected with a pressure gauge 8, and the bottom mold 1 is also provided with a pressure adjusting hole 114 communicating with the sealed space, the pressure adjusting hole 114 is connected with a pressure adjusting switch 10. The pressure adjusting hole 114, the vacuum hole 112 and the pressure detection hole 113 are arranged on the arc-shaped section 11 of the bottom mold 1 and penetrate the inner surface and the outer surface of the arc-shaped section 11. The vacuum hole 112 is connected with a vacuum pump 7, and the ultraviolet lamp 3 is connected with an ultraviolet lamp controller 9, which has a control switch, a power adjusting switch and a display screen. The ultraviolet lamp 3 can be any one of a mercury lamp, a halogen lamp, a gallium lamp and an LED lamp, which is connected to the ultraviolet lamp controller 9 through a cable.

[0050] The working method of the curing device for the inner lining hose pipe sheet sample of the application includes the following steps:

[0051] 1. Sample cutting: cutting a sheet sample 4 of the inner lining hose with a preset size and soaked with resin, for example, the preset size can be 350mm in width and 400mm in length;

[0052] 2. Sample laying: laying the cut sheet sample 4 on the circular arc surface 111 of the bottom mold 1, as shown in Figure 1 .

[0053] 3. Sample sealing: After laying the sheet sample 4, a high-temperature resistant sealing strip 13 is pasted on the arc surface 111 of the bottom mold 1 (the sealing strip 13 can also be fixed on the bottom mold 1 in advance), so that the sealing strip 13 surrounds the sheet sample 4, and then a transparent co-extrusion film 2 is used to cover the sheet sample 4 and the sealing strip 13, as shown in Figure 1 ;

[0054] 4. Bottom mold 1 placement: Place the sealed bottom mold 1 and sheet sample 4 into the curing box 5, and the horizontal fixing part 12 of the bottom mold 1 is placed on the second support 52 inside the box;

[0055] 5. UV light lamp 3 placement: Fix the UV light lamp 3 on the movable lamp holder 6, place the two ends of the lamp holder 6 on the corresponding first supports 51 inside the curing box 5, and ensure that the UV light lamp 3 is located at the center of the arc surface 111 of the bottom mold 1;

[0056] 6. Vacuum system connection: Connect the vacuum pump 7 to the vacuum hole 112 on the bottom mold 1 through the vacuum pipe 71, connect the pressure gauge 8 to the pressure detection hole 113 on the bottom mold 1, and connect the pressure regulating switch 10 to the pressure regulating hole 114 on the bottom mold 1;

[0057] 7. Vacuum pumping: Pump out the air between the bottom mold 1 and the transparent co-extrusion film 2 through the vacuum pump 7 to form a negative pressure above the sheet sample 4, thereby simulating the internal air pressure of the inner liner hose during curing in the pipeline, and adjusting the vacuum pressure between the bottom mold 1 and the transparent co-extrusion film 2 through the pressure regulating switch 10, and detecting it through the pressure gauge 8, so that it reaches the working pressure during curing in the pipeline;

[0058] 8. Light on curing: Keep the working negative pressure for a certain period of time, turn on the control switch on the UV light lamp controller 9, and select different power UV light lamps 3 by adjusting the power regulating switch on the UV light lamp controller 9. The power of the UV light lamp 3 is selected according to the specifications and thickness of the sheet sample.

[0059] 9. Curing is completed, the bottom mold 1 is taken out from the curing box 5, and the cured inner liner hose sheet sample 4 on the bottom mold 1 is taken off, which is used for subsequent mechanical property testing.

[0060] Example Two

[0061] Please refer to Figures 2-4As shown, the curing device of the inner lining hose pipe sheet sample 4 of the present application is different from the first embodiment in that the number of the bottom molds 1 is several, the diameters of the arc surfaces 111 of the several bottom molds 1 are different, and the several bottom molds 1 are selectively used for laying the sheet sample 4 of the inner lining hose immersed with the resin. Thus, the present application has strong versatility, and various inner lining hose pipe sheet samples 4 with different sizes can be prepared according to actual needs.

[0062] In the present embodiment, according to the diameter of the inner lining hose pipe sheet sample, the following bottom molds with different arc surface diameters are provided: the bottom molds with small arc surface diameters, including three kinds of bottom molds with arc surface diameters of 300 mm, 400 mm and 500 mm; the bottom molds with medium arc surface diameters, including three kinds of bottom molds with arc surface diameters of 600 mm, 700 mm and 800 mm; and the bottom molds with large arc surface diameters, including five kinds of bottom molds with arc surface diameters of 900 mm, 1000 mm, 1100 mm, 1200 mm and 1600 mm. Correspondingly, the height adjustment of the ultraviolet lamp 3 in the curing box 5 is set to three levels of low, medium and high. When the bottom mold 1 with small arc surface diameter is used, the height of the ultraviolet lamp 3 is adjusted to the low level, as shown in FIG. 4; when the bottom mold 1 with medium arc surface diameter is used, the height of the ultraviolet lamp 3 is adjusted to the medium level, as shown in FIG. 5; and when the bottom mold 1 with large arc surface diameter is used, the height of the ultraviolet lamp 3 is adjusted to the high level, as shown in FIG. 6. Thus, the irradiation distance of the ultraviolet lamp 3 to the sheet sample meets the requirements. Figure 2 Figure 3 Figure 4 Thus, the irradiation distance of the ultraviolet lamp 3 to the sheet sample meets the requirements.

[0063] Embodiment Three

[0064] The curing method of the inner lining hose pipe sheet sample of the present application comprises the following steps:

[0065] 1) Sample cutting: cutting a sheet sample of the inner lining hose with a preset size and immersed with the resin;

[0066] 2) Sample laying: laying the sheet sample on the arc surface of a bottom mold;

[0067] 3) Sample sealing: covering the sheet sample with a light-transmissive sealing part, so that the sheet sample is in a closed space;

[0068] 4) Vacuumizing: vacuumizing the air in the closed space by using a vacuumizing device;

[0069] 5) Light-on curing: irradiating the sheet sample by using an ultraviolet lamp, so that the sheet sample is cured under the ultraviolet irradiation to form a pipe sheet.

[0070] ​​In the embodiment, a sealing rubber strip is arranged on the arc surface of the bottom mold, the sealing rubber strip surrounds the sheet sample laid on the arc surface, and the sealing component covers or extends to the sealing rubber strip; and the sealing component is a transparent co-extrusion film.

[0071] In the embodiment, the bottom mold and the ultraviolet lamp are arranged in a curing box, the arc surface of the bottom mold faces upward, the light emitting surface of the ultraviolet lamp faces the arc surface, and the height of the bottom mold and / or the ultraviolet lamp can be adjusted in the curing box.

[0072] In the embodiment, the bottom mold is provided with a vacuum hole communicating with the sealed space, the vacuumizing device is connected with the vacuum hole in the step 4), and the vacuumizing device is specifically a vacuum pump; the bottom mold is further provided with a pressure detection hole communicating with the sealed space, and the step 4) further includes: detecting the vacuum pressure in the sealed space by a pressure gauge connected with the pressure detection hole; and the bottom mold is further provided with a pressure adjusting hole communicating with the sealed space, and the step 4) further includes: adjusting the vacuum pressure in the sealed space by a pressure adjusting switch connected with the pressure adjusting hole.

[0073] In the embodiment, the ultraviolet lamp is connected with a controller, and the power of the ultraviolet lamp is adjusted by the controller.

[0074] The curing method of the sheet sample of the inner lining hose according to the present application can be realized by using the curing device of the sheet sample of the inner lining hose according to the present application in the above-mentioned embodiment one or embodiment two, and the detailed method process is as described above, which will not be described here.

[0075] The curing device and method of the sheet sample of the inner lining hose according to the present application can be used for the production and performance test of the sheet sample of the inner lining hose in the factory after the inner lining hose is manufactured, the power of the ultraviolet lamp, the distance from the material surface and the front sample pressure during the sample production are completely consistent with the on-site curing of the inner lining hose in the pipeline, the sample produced is consistent with the shape of the acceptance sample specified in the standard, the error caused by the test conditions before and after the use of the inner lining hose is reduced, and the engineering design and construction are more convenient.

[0076] The amount of the hose material used in the present application is small, the production is convenient and fast, and the scene of the hose during the on-site curing in the pipeline is fully simulated, and the test deviation of the mechanical properties of the sample before and after the construction is reduced.

[0077] The above-mentioned embodiments are only used to further illustrate the curing device and method of the sheet sample of the inner lining hose according to the present application, but the present application is not limited to the embodiments, and any simple modification, equivalent change and modification made according to the technical essence of the present application to the above-mentioned embodiments all fall within the protection scope of the technical scheme of the present application.

Claims

1. A curing apparatus for a tubular sample lined with a flexible tube, characterized in that: include: A bottom mold having an arcuate surface for laying a sheet sample of a resin-impregnated inner tubing; A light-transmitting sealing component is used to cover the sheet sample laid on the arc surface, so that the sheet sample is in a sealed space. The bottom mold and / or the sealing component is provided with a vacuum hole communicating with the sealed space, for evacuating the sealed space to simulate the pressure experienced by the inner lining hose during on-site curing in the pipeline. An ultraviolet lamp is used to irradiate the sheet sample, causing the sheet sample to solidify under ultraviolet light to form a tube-shaped sheet; a sealing strip is provided on the arc surface of the bottom mold, the sealing strip surrounds the sheet sample laid on the arc surface, and the sealing component covers or extends the sealing strip.

2. The curing apparatus for tubular samples with inner lining according to claim 1, characterized in that: The sealing component is a transparent co-extruded film, and the vacuum hole is located in the bottom mold.

3. The curing apparatus for tubular samples with inner lining according to claim 1, characterized in that: It also includes a curing chamber, in which the bottom mold and ultraviolet lamp are placed, with the arc surface of the bottom mold facing upwards and the light-emitting surface of the ultraviolet lamp facing the arc surface; the height of the bottom mold and / or ultraviolet lamp inside the curing chamber is adjustable.

4. The curing apparatus for tubular samples with inner lining according to claim 3, characterized in that: The ultraviolet lamp is mounted on a lamp holder. The two opposite inner sides of the curing chamber are provided with a plurality of first supports. The plurality of first supports are distributed at intervals along the height direction of the curing chamber, and each first support on one inner side corresponds to each first support on the other inner side. The two opposite ends of the lamp holder rest on the corresponding two first supports.

5. The curing apparatus for a tubular sample with an inner lining according to claim 3, characterized in that: The inner side of the curing chamber is provided with several second supports, which support the bottom mold.

6. The curing apparatus for a tubular sample with an inner lining according to claim 5, characterized in that: The bottom mold includes an arc-shaped segment, the inner surface of which forms the arc surface. The two opposite ends of the arc-shaped segment are respectively provided with outwardly extending fixing parts, which correspond one-to-one with the second support and rest on the corresponding second support.

7. The curing apparatus for a tubular sample with an inner lining according to claim 1, characterized in that: The bottom mold is provided with a pressure detection hole that connects to the sealed space, and a pressure gauge is connected to the pressure detection hole; the bottom mold is provided with a pressure adjustment hole that connects to the sealed space, and a pressure adjustment switch is connected to the pressure adjustment hole.

8. The curing apparatus for a tubular sample with an inner lining according to claim 1, characterized in that: The vacuum port is connected to a vacuum pump, and the ultraviolet lamp is connected to an ultraviolet lamp controller.

9. The curing apparatus for a tubular sample with an inner lining according to any one of claims 1-8, characterized in that: The number of bottom molds is several, and the diameter of the arc surface of the bottom molds is different. One of the bottom molds is selected for laying the sheet sample of the resin-impregnated inner tubing.

10. A method for curing a tubular sample lined with a flexible tube, characterized in that: Includes the following steps: 1) Sample cutting: Cut a sheet sample of a tubular inner liner with a preset size and impregnated with resin; 2) Sample laying: The sheet-like sample is laid on the arc surface of a bottom mold; 3) Sample sealing: The sheet sample is covered with a light-transmitting sealing component to keep the sheet sample in a sealed space; 4) Vacuuming: The air in the sealed space is extracted using a vacuuming device to simulate the pressure experienced by the inner lining hose during on-site curing inside the pipe; 5) Curing under UV light: The sheet sample is irradiated with a UV lamp to cure it into a tube-shaped form under UV light. A sealing strip is provided on the arc surface of the bottom mold, and the sealing strip surrounds the sheet sample laid on the arc surface. The sealing component covers or extends the sealing strip.

11. The curing method for the inner-lined flexible tube sheet sample according to claim 10, characterized in that: The sealing component is a transparent co-extruded film.

12. The curing method for the inner-lined flexible tube sheet sample according to claim 10, characterized in that: The bottom mold and ultraviolet lamp are placed inside a curing chamber, with the arc surface of the bottom mold facing upwards and the light-emitting surface of the ultraviolet lamp facing the arc surface. The height of the bottom mold and / or ultraviolet lamp inside the curing chamber is adjustable.

13. The curing method for the inner-lined flexible tube sheet sample according to claim 10, characterized in that: The bottom mold is provided with a vacuum hole communicating with the sealed space. In step 4), a vacuum pump is connected to the vacuum hole. The bottom mold is provided with a pressure detection hole communicating with the sealed space. Step 4) further includes: detecting the vacuum pressure in the sealed space by a pressure gauge connected to the pressure detection hole. The bottom mold is provided with a pressure regulating hole communicating with the sealed space. Step 4) further includes: regulating the vacuum pressure in the sealed space by a pressure regulating switch connected to the pressure regulating hole.

14. The curing method for the inner-lined flexible tube sheet sample according to claim 10, characterized in that: The ultraviolet lamp is connected to a controller, through which the power of the ultraviolet lamp can be adjusted.

Images