Method and device for installing heat insulation net in high-temperature connection area

Abstract

The invention belongs to the field of heat insulation net installation, and particularly relates to a heat insulation net installation method and device for a high-temperature connection area. One ends of the L-shaped supports are fixed to the connecting bolts of the high-temperature component, the other ends of the L-shaped supports are connected through the regularly-distributed hollow holes of the heat insulation net, installation hole positions can be flexibly selected according to the space size, and the coverage range of the heat insulation net can be freely adjusted by increasing or decreasing the number of the L-shaped supports; the tightly-attached heat insulation net effectively blocks heat on the surface of the high-temperature component. The system adapts to different protection requirements, the installation process is simplified, construction is convenient and fast, safety is high, the characteristic can be repeatedly adjusted, material waste is reduced, later maintenance or system transformation is facilitated, economical efficiency is good, and the long-term cost is remarkably reduced.

Description

Technical Field

[0001] The present invention belongs to the field of installation of heat insulation nets, and particularly relates to a method and device for installing a heat insulation net in a high-temperature connection area. Background Art

[0002] During operation, high-temperature components in the exhaust system of a diesel engine generate a large amount of heat. Due to installation requirements, a space without heat insulation material wrapped needs to be reserved in the connection area, resulting in a risk of scalding for operators. According to the requirements of the SOLAS Convention, heat insulation must be laid in such high-temperature areas to ensure safety.

[0003] Most of the existing methods for installing heat insulation nets in high-temperature connection areas adopt fixed heat insulation structures, but there are significant defects: the fixed structures are difficult to adapt to the changes in the space dimensions of different connections, resulting in difficult installation or inadequate protection; for the reserved uncovered areas, such as bolt connections, due to the lack of flexible adjustment means, they cannot be effectively covered; it is difficult to adjust the existing heat insulation materials after installation, and when subsequent maintenance or space changes are required, re-construction is needed, which is costly and inefficient. For example, at the connection between a supercharger and a conical reducer, the height of the uncovered area is about 160 mm and the width is about 850 mm. The existing methods for installing heat insulation nets in high-temperature connection areas cannot achieve effective protection in such narrow spaces. Therefore, there is an urgent need for a method and device for installing a heat insulation net in a high-temperature connection area, which can flexibly adapt to different components in a limited space, ensure comprehensive protection of the high-temperature area, and at the same time simplify the construction process to meet the requirements of safety codes. Summary of the Invention

[0004] In order to solve the problems of the existing methods and devices for installing heat insulation nets in high-temperature connection areas, such as the fixed structures being difficult to adapt to the changes in the space dimensions of different connections, difficult installation, inadequate protection, high construction costs and low efficiency during maintenance or space changes, the present invention proposes a method for installing a heat insulation net in a high-temperature connection area, including the following steps:

[0005] S1: Determine the space dimensions of the protection area:

[0006] Measure the dimensions of the uncovered area at the connection of high-temperature components, including height, width and depth, and calculate the coverage area of the required heat insulation net and the number of L-shaped brackets according to the measurement results;

[0007] S2: Select suitable L-shaped brackets and heat insulation nets:

[0008] According to the measurement results of step S1, select L-shaped brackets with adjustable vertical arm length L1 and horizontal arm length L2 of the L-shaped brackets, and heat insulation nets with matrix-shaped perforations evenly distributed on the surface;

[0009] S3: Fix the first end of the L-shaped bracket:

[0010] Fix the first end of the L-shaped bracket to the connecting bolt of the high-temperature component with high-temperature-resistant bolts;

[0011] S4: Adjust the length of the horizontal arm of the L-shaped bracket:

[0012] According to the depth requirement of the protection area, adjust the length L2 of the horizontal arm of the L-shaped bracket so that the horizontal arm of the L-shaped bracket extends to the installation position of the heat insulation net;

[0013] S5: Connect the heat insulation net to the second end of the L-shaped bracket:

[0014] Align the second end of the L-shaped bracket with the target perforation on the heat insulation net and tightly connect them through the threaded hole and the nut.

[0015] S6: Repeat the installation and configuration of multiple groups of L-shaped brackets:

[0016] Repeat steps S3 to S5 along the edge and center position of the protection area. Configure 3 - 6 groups of L-shaped brackets per square meter area, and adjust the tension of the heat insulation net by increasing or decreasing the number of L-shaped brackets;

[0017] S7: Sealing and verification:

[0018] Install a silicone rubber sealing strip at the edge of the heat insulation net to fill the gap, and detect the stability of each connection point and the surface temperature of the heat insulation net to ensure that the temperature drops below 80°C;

[0019] S8: Thermal expansion compensation and maintenance adaptation:

[0020] Add an elastic gasket between the L-shaped bracket and the heat insulation net to absorb the stress of high-temperature deformation; during subsequent maintenance, remove the nut to locally replace the heat insulation net module.

[0021] According to the heat insulation net installation method for a high-temperature connection area described above, the vertical arm and the horizontal arm of the L-shaped bracket are connected by a detachable hinge, which supports angle adjustment to adapt to special-shaped connection areas.

[0022] According to the heat insulation net installation method for a high-temperature connection area described above, a reinforcing ring is provided at the edge of the perforation of the heat insulation net to prevent the hole position from deforming due to installation stress.

[0023] According to the heat insulation net installation method for a high-temperature connection area described above, the edge of the heat insulation net is coated with a silicone rubber sealing strip, which is used to fill the gap between the heat insulation net and the high-temperature component to enhance the heat insulation and sealing performance.

[0024] A device for installing a heat insulation net according to the method for installing a heat insulation net in a high-temperature connection area described above, comprising: a heat insulation net, on the surface of which a number of matrix-arranged perforations are evenly distributed, and the appropriate perforations are selected for installation according to the spatial dimensions of the connection area; an L-shaped bracket is provided on the heat insulation net for installing it on a high-temperature component; a light hole is provided on the horizontal arm of the L-shaped bracket and is connected and fixed to the high-temperature component through a bolt, and a threaded hole is provided on the vertical arm of the L-shaped bracket and is connected to the perforation of the heat insulation net through a nut; the length L1 of the vertical arm of the L-shaped bracket and the length L2 of the horizontal arm of the L-shaped bracket are adjustable, and the number of the L-shaped brackets is dynamically configured according to the area of the protection area, and 3-6 groups of brackets are configured per square meter of the protection area to ensure that the heat insulation net is closely attached to the surface of the high-temperature component.

[0025] According to a device for installing a heat insulation net in a high-temperature connection area described above, a quick-locking structure is provided on the vertical arm of the L-shaped bracket, and the connection with the perforation can be completed without tools.

[0026] According to a device for installing a heat insulation net in a high-temperature connection area described above, the block size of the heat insulation net is 300mm×300mm to 1000mm×1000mm, and modular splicing and expansion are supported.

[0027] According to a device for installing a heat insulation net in a high-temperature connection area described above, the surface of the L-shaped bracket is covered with a high-temperature resistant ceramic fiber layer to further reduce heat conduction.

[0028] According to a device for installing a heat insulation net in a high-temperature connection area described above, the head of the bolt is embedded in the light hole of the L-shaped bracket to avoid the convex structure interfering with the installation of other components.

[0029] According to a device for installing a heat insulation net in a high-temperature connection area described above, the nut adopts a self-locking structure to prevent loosening caused by vibration in a high-temperature environment.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. One end of the L-shaped bracket of the present invention is fixed to the connection bolt of the high-temperature component, and the other end is connected through the regularly distributed perforations of the heat insulation net. The installation hole positions can be flexibly selected according to the spatial dimensions, and the adaptability is good, solving the problem that the traditional fixed structure cannot adapt to the changeable space.

[0032] 2. By increasing or decreasing the number of L-shaped brackets, the coverage range of the heat insulation net can be freely adjusted, and modular expansion can be carried out to meet different protection requirements, such as a narrow area with a height of 160mm and a width of 850mm.

[0033] 3. The present invention uses a heat insulation net with a general specification and a customizable L-shaped bracket, which simplifies the procurement and installation processes, enables convenient construction, reduces the construction difficulty; the design of the light holes and threaded holes at both ends of the bracket supports quick adjustment without the need for complex tools.

[0034] 4. The closely fitting heat insulation net of the present invention effectively blocks the heat on the surface of high-temperature components, avoiding scalding of operators during contact, with high safety, and fully meeting the safety requirements of the SOLAS Convention.

[0035] 5. The repeatable adjustment characteristics of the L-shaped bracket and the heat insulation net of the present invention reduce material waste, and are convenient for later maintenance or system transformation, with good economy and significantly reducing long-term costs. Description of the Drawings

[0036] Figure 1 It is a schematic installation structure diagram of an installation method for a heat insulation net in a high-temperature connection area of the present invention.

[0037] Figure 2 It is a front view of a schematic structural diagram of an L-shaped bracket of an installation device for a heat insulation net in a high-temperature connection area of the present invention.

[0038] Figure 3 It is a left view of a schematic structural diagram of an L-shaped bracket of an installation device for a heat insulation net in a high-temperature connection area of the present invention.

[0039] Figure 4 It is a top view of a schematic structural diagram of an L-shaped bracket of an installation device for a heat insulation net in a high-temperature connection area of the present invention.

[0040] Figure 5 It is a front view of a schematic structural diagram of a heat insulation net of an installation device for a heat insulation net in a high-temperature connection area of the present invention.

[0041] In the figure: 1 - supercharger, 2 - square-round connection piece, 3 - L-shaped bracket, 4 - heat insulation net, 5 - horizontal arm of the L-shaped bracket, 6 - vertical arm of the L-shaped bracket, 7 - light hole, 8 - threaded hole, 9 - perforated hole. Detailed Embodiments

[0042] Preferred Embodiment

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0044] As Figure 1 shown: In this embodiment, an installation method for a heat insulation net in a high-temperature connection area includes the following steps:

[0045] S1: Determine the spatial dimensions of the protection area:

[0046] Measure the dimensions of the unprotected area at the joints of the high-temperature components, including height, width, and depth, and calculate the coverage area of the required heat insulation net 4 and the number of L-shaped brackets based on the measurement results.

[0047] S2: Select a suitable L-shaped bracket 3 and heat insulation net 4:

[0048] According to the measurement results in step S1, select an L-shaped bracket with adjustable lengths L1 of the vertical arm 6 and L2 of the horizontal arm 5 of the L-shaped bracket, and a heat insulation net 4 with a matrix of evenly distributed through-holes 9 on the surface, where the spacing of the through-holes 9 is 50 - 100 mm.

[0049] S3: Fix the first end of the L-shaped bracket 3:

[0050] Fix the first end of the L-shaped bracket 3 to the connecting bolt of the high-temperature component with a high-temperature resistant bolt.

[0051] S4: Adjust the length of the horizontal arm 5 of the L-shaped bracket:

[0052] According to the depth requirement of the protection area, adjust the length L2 of the horizontal arm 5 of the L-shaped bracket within the range of 50 - 200 mm so that the horizontal arm 5 of the L-shaped bracket extends to the installation position of the heat insulation net 4.

[0053] S5: Connect the heat insulation net 4 to the second end of the L-shaped bracket 3:

[0054] Align the second end of the L-shaped bracket 3 with the target through-hole on the heat insulation net 4 and tightly connect them through the threaded hole 8 and the nut, ensuring that the distance between the heat insulation net 4 and the surface of the high-temperature component is ≤ 10 mm.

[0055] S6: Repeat the installation and configuration of multiple groups of L-shaped brackets 3:

[0056] Repeat steps S3 to S5 along the edge and center of the protection area. Configure 3 - 6 groups of L-shaped brackets 3 per square meter area, and adjust the tension of the heat insulation net 4 by increasing or decreasing the number of L-shaped brackets 3.

[0057] S7: Sealing and verification:

[0058] Install a silicone sealing strip at the edge of the heat insulation net 4 to fill the gap, and detect the stability of each connection point and the surface temperature of the heat insulation net 4 to ensure that the temperature drops below 80°C.

[0059] S8: Thermal expansion compensation and maintenance adaptation:

[0060] Add an elastic gasket between the L-shaped bracket 3 and the heat insulation net 4 to absorb the thermal deformation stress; during subsequent maintenance, remove the nut to locally replace the heat insulation net module.

[0061] The vertical arm 6 of the L-shaped bracket is detachably hinged to the horizontal arm 5 of the L-shaped bracket, supporting angle adjustment to adapt to the irregular connection area.

[0062] Reinforcing rings are provided at the edges of the perforations 9 of the heat insulation net 4 to prevent the deformation of the hole positions caused by installation stress. The edge of the heat insulation net 4 is coated with a silica gel sealing strip for filling the gap between it and the high-temperature component and enhancing the heat insulation tightness.

[0063] A heat insulation net installation device for a high-temperature connection area includes: a heat insulation net 4, on the surface of which a number of matrix-arranged perforations are evenly distributed, the spacing of the perforations 9 being 50 - 100 mm, and the appropriate perforations 9 are selected for installation according to the space size of the connection area; an L-shaped bracket 3 for installing the heat insulation net 4 onto a high-temperature component is provided on the heat insulation net 4; a light hole 7 is provided on the horizontal arm 5 of the L-shaped bracket and is connected and fixed to the high-temperature component by a bolt, and a threaded hole 8 is provided on the vertical arm 6 of the L-shaped bracket and is connected to the perforation 9 of the heat insulation net 4 by a nut; the length L1 of the vertical arm 6 of the L-shaped bracket and the length L2 of the horizontal arm 5 of the L-shaped bracket are adjustable, and the adjustment range is 50 - 200 mm to adapt to different installation depths and height requirements; the number of L-shaped brackets 3 is dynamically configured according to the area of the protection area, and 3 - 6 groups of L-shaped brackets 3 are configured per square meter of the protection area to ensure that the heat insulation net 4 is closely attached to the surface of the high-temperature component.

[0064] A quick-locking structure is provided on the vertical arm 6 of the L-shaped bracket, enabling the connection with the perforation 9 to be completed without tools.

[0065] The sectional size of the heat insulation net 4 is 300 mm × 300 mm to 1000 mm × 1000 mm, supporting modular splicing and expansion.

[0066] The surface of the L-shaped bracket 3 is covered with a high-temperature-resistant ceramic fiber layer to further reduce heat conduction.

[0067] The head of the bolt is embedded in the light hole 7 of the L-shaped bracket 3 to avoid interference with the installation of other components by the protruding structure.

[0068] The nut adopts a self-locking structure to prevent loosening caused by vibration in a high-temperature environment.

[0069] The specific implementation manner of the present invention is as follows:

[0070] Component selection and preparation

[0071] The heat insulation net 4 is made of 316L stainless steel mesh with a thickness of 3 mm, and an alumina ceramic coating with a thickness of 0.2 mm is sprayed on the surface, with a tolerance temperature ≥ 900°C. Perforations 9 with a diameter of 10 mm are punched on the mesh surface at an 80 mm × 80 mm spacing to form a uniform matrix.

[0072] The L-shaped bracket 3 is formed by bending a 304 stainless steel plate. The initial lengths of the vertical arm 6 and the horizontal arm 5 of the L-shaped bracket are 100 mm and 80 mm respectively, and φ8 mm light holes 7 and M6 threaded holes 8 are opened at both ends. The surface of the L-shaped bracket 3 is covered with a 1-mm-thick ceramic fiber felt to reduce heat conduction.

[0073] The connecting piece is selected as a M6×40 mm high-temperature-resistant stainless steel bolt and a self-locking nut. The head of the bolt is designed as a countersunk head structure to avoid protrusions.

[0074] Installation process

[0075] Taking the connection between the diesel engine supercharger 1 and the round-to-square connecting piece 2 as an example, the size of the uncovered area is 160 mm×850 mm:

[0076] First, determine the scope of the protection area and calculate the required area of the heat insulation net: 0.14 m 2 , and the number of brackets: Configure 6 groups of brackets.

[0077] Secondly, fix the vertical arm 6 of the L-shaped bracket to the connecting bolt between the supercharger 1 and the round-to-square connecting piece 2 through a countersunk head bolt, ensuring that the L-shaped bracket 3 is perpendicular to the surface of the supercharger 1.

[0078] Thirdly, adjust the length of the horizontal arm 5 of the L-shaped bracket to the appropriate position according to the space size, align the threaded hole 8 of the horizontal arm 5 of the L-shaped bracket with the target punched hole 9 on the heat insulation net 4, and fasten it with a self-locking nut.

[0079] Then, repeat the installation of the remaining L-shaped brackets 3, arranging one group every 150 mm to ensure that the heat insulation net 4 evenly covers the uncovered area.

[0080] Finally, check the stability of each connection point between the L-shaped bracket 3 and the punched hole 9, and install a silicone sealing strip at the edge of the heat insulation net 4 to fill the small gaps between the components.

[0081] Adjustment and optimization

[0082] Space adaptation: If the connection area between the L-shaped bracket 3 and the punched hole 9 has an irregular shape, the angle of the L-shaped bracket 3 can be adjusted through a hinge, 0°-90°, or the heat insulation net 4 can be cut into pieces for splicing.

[0083] Thermal expansion compensation: Install an elastic copper alloy gasket between the L-shaped bracket 3 and the heat insulation net 4 to absorb the deformation stress at high temperatures and prevent structural deformation.

[0084] Maintenance and replacement: The locally damaged heat insulation net 4 can be quickly replaced by removing the self-locking nut without overall removal.

[0085] Implementation effect verification

[0086] After testing, after installing the heat insulation net 4 of the present invention, the surface temperature of the high-temperature component drops from 450°C to below 60°C, fully meeting the contact safety standard of the SOLAS Convention, and the surface temperature ≤ 80°C. No looseness or deformation occurs at the connection between the L-shaped bracket 3 and the perforated hole 9, and the heat insulation net 4 remains stable in a continuous vibration environment.

[0087] Extended application

[0088] This solution can be extended to other high-temperature connection areas such as ship boilers and industrial furnaces. Only the length of the L-shaped bracket 3 and the block size of the heat insulation net 4 need to be adjusted to adapt to different scenarios.

[0089] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A method for installing a heat insulation net in a high-temperature connection area, characterized in that It includes the following steps: S1: Determine the spatial dimensions of the protection area: Measure the dimensions of the uncovered area at the connection of the high-temperature component, including height, width, and depth, and calculate the coverage area of the required heat insulation net and the number of L-shaped brackets based on the measurement results; S2: Select a suitable L-shaped bracket and heat insulation net: According to the measurement results of step S1, select an L-shaped bracket with adjustable vertical arm length L1 and horizontal arm length L2 of the L-shaped bracket, and a heat insulation net with evenly distributed matrix-shaped perforations on the surface; S3: Fix the first end of the L-shaped bracket: Fix the first end of the L-shaped bracket to the connection bolt of the high-temperature component with high-temperature-resistant bolts; S4: Adjust the horizontal arm length of the L-shaped bracket: According to the depth requirement of the protection area, adjust the horizontal arm length L2 of the L-shaped bracket so that the horizontal arm of the L-shaped bracket extends to the installation position of the heat insulation net; S5: Connect the heat insulation net to the second end of the L-shaped bracket: Align the second end of the L-shaped bracket with the target perforation on the heat insulation net and tightly connect it through the threaded hole and the nut, S6: Repeat the installation and configure multiple groups of L-shaped brackets: Repeat steps S3 to S5 along the edge and center position of the protection area. Configure 3-6 groups of L-shaped brackets per square meter area, and adjust the tension of the heat insulation net by increasing or decreasing the number of L-shaped brackets; S7: Sealing and verification: Install a silicone rubber sealing strip at the edge of the heat insulation net to fill the gap, and detect the stability of each connection point and the surface temperature of the heat insulation net to ensure that the temperature drops below 80°C; S8: Thermal expansion compensation and maintenance adaptation: Add an elastic gasket between the L-shaped bracket and the heat insulation net to absorb the high-temperature deformation stress; during subsequent maintenance, remove the nut to locally replace the heat insulation net module.

2. The heat insulation net installation method for a high-temperature connection area according to claim 1, characterized in that, The vertical arm and the horizontal arm of the L-shaped bracket are connected by a detachable hinge, supporting angle adjustment to adapt to the special-shaped connection area.

3. The heat insulation net installation method for a high-temperature connection area according to claim 2, characterized in that, Reinforcing rings are provided at the edges of the perforations of the heat insulation net to prevent the hole positions from deforming due to installation stress.

4. A method for installing a heat insulation net in a high-temperature connection area according to claim 3, characterized in that The edge of the heat insulation net is coated with a silicone rubber sealing strip to fill the gap between it and the high-temperature component and enhance the heat insulation sealing performance.

5. An apparatus for installing a heat insulation net according to the method for installing a heat insulation net in a high-temperature connection area as claimed in claim 1 or 4, characterized in that, It includes: A heat insulation net, on the surface of which a number of matrix-arranged perforations are evenly distributed, and select a suitable perforation for installation according to the spatial dimensions of the connection area; an L-shaped bracket for installing it on the high-temperature component is provided on the heat insulation net; light holes are provided on the horizontal arm of the L-shaped bracket and are connected and fixed to the high-temperature component through bolts, and threaded holes are provided on the vertical arm of the L-shaped bracket and are connected to the perforations of the heat insulation net through nuts; the vertical arm length L1 and the horizontal arm length L2 of the L-shaped bracket are adjustable, and the number of the L-shaped brackets is dynamically configured according to the area of the protection area, and 3-6 groups of L-shaped brackets are configured per square meter of the protection area to ensure that the heat insulation net is closely attached to the surface of the high-temperature component.

6. The heat insulation net installation device for a high-temperature connection area according to claim 5, characterized in that, A quick locking structure is provided on the vertical arm of the L-shaped bracket, and the connection with the perforation can be completed without tools.

7. The heat insulation net installation device for a high-temperature connection area according to claim 6, characterized in that, The block size of the heat insulation net is 300mm×300mm to 1000mm×1000mm, supporting modular splicing and expansion.

8. The heat insulation net installation device for a high-temperature connection area according to claim 7, characterized in that, The surface of the L-shaped bracket is covered with a high-temperature-resistant ceramic fiber layer to further reduce heat conduction.

9. The heat insulation net installation device for a high-temperature connection area according to claim 8, characterized in that, The head of the bolt is embedded in the light hole of the L-shaped bracket to avoid the protruding structure interfering with the installation of other components.

10. The heat insulation net installation device for a high-temperature connection area according to claim 9, characterized in that, The nut adopts a self-locking structure to prevent loosening caused by vibration in a high-temperature environment.

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