External heating device for compressed air pipeline

Abstract

The utility model discloses a compressed air pipeline external heating device which comprises a flexible sleeve, a heating part and a lifting support, the flexible sleeve has an unfolded state and a contracted state, the compressed air pipeline can be surrounded by the flexible sleeve, freezing of the compressed air pipeline is avoided through heat generated by the heating part, the flexible sleeve can be supported through the lifting support, and the compressed air pipeline can be heated through the heating part. The compressed air pipeline is prevented from deforming and falling off due to gravity, and the lifting support can ascend and descend and can adapt to supporting of compressed air pipelines with different heights within a certain height range.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline heating, and in particular to an external heating device for a compressed air pipeline. Background Art

[0002] The kinetic energy of the pneumatic system comes from compressed air. When the weather turns cold, moisture will be generated in the compressed air pipeline due to the temperature difference. Although it has been treated for sewage discharge, a small amount of water droplets will still enter the pneumatic system along the pipe wall. Since the control system solenoid valves and other equipment require high precision, after the water droplets enter, ice will form when the temperature drops to a certain level, causing the cylinder and other actuators to fail to move, affecting the normal operation of the equipment.

[0003] In the related art, a heating plate is installed inside the control system cabinet to heat the entire cabinet and effectively solve the icing problem caused by the cold weather. However, since there are other components in the control system cabinet, and other components are not affected by the ambient temperature and may generate heat themselves, the installation of a heating plate not only wastes resources, but also has a certain impact on other components. Utility Model Content

[0004] The embodiment of the present application provides a compressed air pipe external heating device, which can solve the problem that the method of installing an electric heating plate not only wastes resources, but also has a certain impact on other components.

[0005] In a first aspect, an embodiment of the present application provides a compressed air pipeline external heating device, comprising:

[0006] A flexible sleeve having an expanded state and a contracted state, wherein when the flexible sleeve is in the contracted state, the flexible sleeve forms a passage for the compressed air pipeline to pass through;

[0007] a heating element disposed inside the flexible sleeve and used to generate heat; and

[0008] A lifting bracket is used to support the flexible sleeve.

[0009] In some embodiments, the flexible sleeve includes an outer lining layer, a heat preservation layer, a heating layer and an inner lining layer connected in sequence, and the heating element is located in the heating layer.

[0010] In some embodiments, the edge of the outer lining layer extends toward the inner lining layer and is connected to the inner lining layer.

[0011] In some embodiments, the flexible sleeve has a first side and a second side opposite to each other, one side is provided with an adhesive portion, and the other side is provided with an adhesive matching portion, and when the flexible sleeve is in a contracted state, the adhesive portion and the adhesive matching portion at least partially overlap.

[0012] In some embodiments, the flexible sleeve includes a main body and a plurality of wing-shaped portions, wherein the plurality of wing-shaped portions are located on one side of the main body and are arranged at intervals along the length direction of the main body at the edge of the main body, and a plurality of adhesive portions are provided, which are arranged one by one on the wing-shaped portions.

[0013] In some embodiments, connecting parts are provided at both ends along the length direction of the flexible sleeve, and the connecting parts define through holes, and fasteners are inserted into the through holes.

[0014] In some embodiments, the lifting bracket includes a first bracket, a second bracket and a locking piece. The second bracket is inserted into the first bracket and is used to support the flexible sleeve. The second bracket is provided with an external thread, and the locking piece is threadedly connected to the external thread.

[0015] In some embodiments, the first bracket and the second bracket are both provided in plurality, the first bracket and the second bracket are provided in one-to-one correspondence, and a support member is installed on the second bracket, and the support member is used to support the flexible sleeve.

[0016] In some embodiments, the support member defines a groove, and the opening area of ​​the groove gradually increases from the groove bottom to the groove mouth.

[0017] In some embodiments, a non-slip pad is connected to the bottom of the first bracket.

[0018] The compressed air pipe external heating device based on the embodiment of the present application includes a flexible sleeve, a heating element and a lifting bracket. The flexible sleeve has an expanded state and a contracted state. It can surround the compressed air pipe. The heat generated by the heating element can be used to prevent the compressed air pipe from freezing. Secondly, the lifting bracket can support the flexible sleeve to prevent the compressed air pipe from being deformed and falling off due to gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of one side of the flexible sleeve in the unfolded state in this embodiment;

[0021] Figure 2 This is a schematic diagram of the structure of the other side of the flexible sleeve in the unfolded state in this embodiment;

[0022] Figure 3 This is a schematic diagram of the internal structure of the flexible sleeve in this embodiment;

[0023] Figure 4 This is a schematic diagram of the structure of the flexible sleeve when the lifting bracket supports the retracted state in this embodiment.

[0024] Explanation of marks in the figure: 1. Flexible sleeve; 11. Outer lining; 12. Insulation layer; 13. Heating layer; 14. Inner lining; 15. Main body; 16. Wing-shaped portion; 2. Lifting bracket; 21. First bracket; 21a. Anti-slip pad; 22. Second bracket; 23. Locking piece; 24. Support piece; 24a. Groove; 3. Adhesive portion; 4. Adhesive fitting portion; 5. Connecting portion; 6. Fastener. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] In the related art, a heating plate is installed inside the control system cabinet to heat the entire cabinet, effectively solving the icing problem caused by the cold weather. However, there are other components in the control system cabinet that are not affected by the ambient temperature and may generate heat themselves. Therefore, the method of installing a heating plate not only wastes resources, but also has a technical problem of causing a certain impact on other components.

[0027] In order to solve the above technical problems, the present embodiment provides a compressed air pipeline external heating device, including a flexible sleeve 1, a heating element and a lifting bracket 2.

[0028] The flexible sleeve 1 has an expanded state and a contracted state, wherein the expanded state is a flat state, for example Figure 1 and Figure 2 As shown, this state is convenient for transportation and transshipment. When it is in the contracted state, the flexible sleeve 1 is ring-shaped as a whole, and the inside of the ring forms a channel for the compressed air pipeline to pass through. In specific implementation, the flexible sleeve 1 in the expanded state is first placed on the outside of the compressed air pipeline, and then the two sides of the flexible sleeve 1 are folded toward the middle and surround the compressed air pipeline.

[0029] A heating element (not shown) is disposed inside the flexible sleeve 1 and is used to generate heat. The heating element adopts electric heating, preferably an electric heating wire, and is connected to the outside of the flexible sleeve 1. The heat generated by the heating element is transferred to the compressed air pipeline through the flexible sleeve 1 to prevent water droplets from freezing.

[0030] See also Figure 4The lifting bracket 2 is used to support the flexible sleeve 1. The lifting bracket 2 can be connected to the flexible sleeve 1 or not. Specifically, the compressed air pipeline can be a flexible pipeline or a rigid pipeline. Since the external heating device in this embodiment has a certain weight, it may cause the compressed air pipeline to deform and fall off, especially the flexible pipeline. Therefore, in this embodiment, a lifting bracket 2 is provided to support the flexible sleeve 1. The other end of the lifting bracket 2 is abutted against the bottom plate of the control cabinet. In this way, the flexible sleeve 1 and the pipeline surrounded by it can be supported, effectively preventing the pipeline from deforming and falling off.

[0031] In the present application, the flexible sleeve 1 includes an outer lining layer 11 , a heat-insulating layer 12 , a heating layer 13 and an inner lining layer 14 which are connected in sequence, and the heating element is located in the heating layer 13 .

[0032] The outer lining layer 11 (also called the outer decorative layer) is made of Teflon high temperature resistant cloth, which has a smooth surface, beautiful appearance, and good non-stick properties. This allows the heating sleeve to be directly wiped off even if there are oil stains, stains or other attachments on the surface during use.

[0033] The insulation layer 12 is an important part for reducing energy loss. The material used is glass fiber needle felt, which has numerous tiny air pockets and irregular fiber arrangement, thus forming a good thermal insulation effect. In some possible embodiments, the insulation layer 12 can also be made of aluminum silicate insulation cotton material, which can also achieve a good thermal insulation effect.

[0034] The heating layer 13 (also called the heating layer) adopts electric heating, and the heating element adopts heating wire. The heating wire is reasonably and evenly arranged to ensure that the flexible sleeve 1 heats evenly, and is fixed on the glass fiber cloth to prevent its position from changing and affecting the heat dissipation effect. The heating layer 13 and the thermal insulation layer 12 can be bonded together by hot pressing, or fixed by sewing. It should be understood that the heating wire generally adopts electric heating wire, which is a product currently on sale in the market, so its working principle will not be elaborated here.

[0035] The inner lining layer 14 (also called the contact layer) is the part that is in direct contact with the compressed air pipe. It has good relative insulation and high temperature resistance. According to the working temperature of the flexible heating sleeve, the contact layer can choose different materials, such as high-temperature glass fiber cloth or aluminum foil composite glass fiber cloth, to ensure a close fit with the outer wall of the compressed air pipe. It can be directly bonded or sewn with the glass fiber cloth in the heating layer 13, which is not limited here.

[0036] The heat generated by the heating layer 13 is transferred to the compressed air pipe through the lining layer 14, while the thermal insulation layer 12 can prevent the heat from being transferred to the outside, thereby reducing heat loss.

[0037] See also Figure 3 The edge of the outer lining layer 11 extends toward the inner lining layer 14 and is connected to the inner lining layer 14. Specifically, the outer lining layer 11 and the inner lining layer 14 are connected together by sewing, which can effectively protect the internal insulation layer 12 and the heating layer 13, avoid some dust accumulation in the heating layer 13, and prevent heat loss to a certain extent.

[0038] In order to prevent the flexible sleeve 1 from being easily switched from the contracted state to the expanded state after surrounding the compressed air pipeline in the contracted state, the flexible sleeve 1 has a first side and a second side opposite to each other. Specifically, Figure 1 The first side of the flexible sleeve 1 is shown. Figure 2 The second side of the flexible sleeve 2 is shown. The first side is provided with an adhesive portion 3, and the second side is provided with an adhesive matching portion 4. When the flexible sleeve 1 is in a contracted state, the adhesive portion 3 and the adhesive matching portion 4 at least partially overlap.

[0039] In this embodiment, the adhesive portion 3 can be Velcro, and the adhesive matching portion 4 is a hook and loop fastener. Of course, it can be understood that the adhesive portion 3 can also be a hook and loop fastener, and the adhesive matching portion 4 can be Velcro. No further restrictions are made here, as long as the adhesive portion 3 and the adhesive matching portion 4 can be bonded together when the flexible sleeve 1 is in a contracted state.

[0040] Furthermore, the flexible sleeve 1 includes a main body 15 and a plurality of wing-shaped portions 16, wherein the plurality of wing-shaped portions 16 are located on one side of the main body 15 and are arranged at intervals along the length direction of the main body 15 at the edge of the main body 15, and the adhesive portions 3 are provided in plurality and are arranged one by one on the wing-shaped portions 16.

[0041] The wing-shaped portion 16 is made of the same material as the outer lining layer 11, and the wing-shaped portion 16 is not provided with the insulation layer 12, the heating layer 13 and the inner lining layer 14. The wing-shaped portion 16 can be sewn together with the main body 15. The multiple wing-shaped portions 16 are arranged at intervals, and the adhesive portions 3 thereon are also arranged at intervals, which can reduce the use of materials, reduce costs and weight while ensuring the connection effect.

[0042] In addition, the Velcro arranged at intervals is more flexible in some places. For example, when some parts of the compressed air pipeline are provided with other components, the channel formed by the flexible sleeve 1 at that place cannot be so crowded, and a certain avoidance space is required, or there is no need to connect the adhesive part 3 and the adhesive matching part 4 together.

[0043] Furthermore, combined with Figure 1 as well as Figure 2, connecting parts 5 are provided at both ends along the length direction of the flexible sleeve 1, and the connecting parts 5 define a through hole, and a fastener 6 is inserted in the through hole. The connecting part 5 and the outer lining layer 11 are made of the same material and can be sewn together with the main body 15, and the fastener 6 is generally a rope-like structure. When the flexible sleeve 1 is in a contracted state, the two ends of the rope-like structure can be wrapped around the compressed air pipeline and then tied tightly, so that the connecting part 5 can also fit tightly to the compressed air pipeline. On the one hand, it can prevent the flexible sleeve 1 from moving and causing a gap to be generated, causing heat loss. On the other hand, it can prevent heat from being lost from both ends of the flexible sleeve 1.

[0044] See also Figure 4 The lifting bracket 2 includes a first bracket 21, a second bracket 22 and a locking piece 23. The second bracket 22 is inserted into the first bracket 21. The second bracket 22 is provided with an external thread, and the locking piece 23 is threadedly connected to the external thread.

[0045] The number of first brackets 21 can be multiple, and a fixing plate is provided at the bottom of the multiple first brackets 21 to improve the stability of the entire lifting bracket 2. A hole (not shown in the figure) is opened on the first bracket 21 along its length direction, and the second bracket 22 is inserted into the hole and can rise or fall along the hole, so that the height of the entire lifting bracket 2 can be adjusted and can adapt to compressed air pipelines of different heights within a certain height range.

[0046] The locking piece 23 is a nut with an internal thread. Generally, for the convenience of rotation, the nut is a double-ear nut (or a mountain-shaped nut). When the locking piece 23 is rotated to fit tightly with the first bracket 21, the second bracket 22 cannot be lowered, thereby completing the locking of the height of the lifting bracket 2. When the locking piece 23 is rotated in the opposite direction, the locking piece 23 is separated from the first bracket 21, and the second bracket 22 can be moved upward or downward, thereby adjusting the height of the lifting bracket 2.

[0047] Furthermore, the first bracket 21 and the second bracket 22 are each provided with a plurality of first brackets 21 and second brackets 22. The first bracket 21 and the second bracket 22 are provided in a one-to-one correspondence. The stability of the support can be ensured through multi-point support. A support member 24 is installed on the second bracket 22. The support member 24 can be fixedly connected to the second bracket 22 by bolts or welding. The support member 24 can expand the contact area with the flexible sleeve 1, thereby avoiding stress concentration while ensuring the stability of the support.

[0048] Since the flexible sleeve 1 is generally cylindrical when insulating the pipe, the support member 24 defines a groove 24a, and the opening area of ​​the groove 24a gradually increases from the bottom of the groove to the groove mouth. In some embodiments, the groove 24a can be an arc groove or a V-shaped groove, such as Figure 4 As shown, the groove 24a used in this embodiment is an arc-shaped groove, which can greatly increase the contact area with the flexible sleeve 1, ensure uniform force, and improve the supporting effect.

[0049] It can be understood that in the lifting bracket 2, the stability is mainly achieved by the bottom of the first bracket 21. Therefore, in this embodiment, the bottom of the first bracket 21 is connected with an anti-slip pad 21a, and the bottoms of several first brackets 21 are connected together by a fixing plate, such as Figure 4 As shown, an anti-skid pad 21a is provided under the fixing plate, which can be bonded by glue or fixed by countersunk bolts. The material of the anti-skid pad 21a can be rubber or silicone, which is not only corrosion-resistant but also has good anti-skid performance.

[0050] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application 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. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A compressed air pipeline external heating device, characterized in that: include: A flexible sleeve having an expanded state and a contracted state, wherein when the flexible sleeve is in the contracted state, the flexible sleeve forms a passage for the compressed air pipeline to pass through; a heating element disposed inside the flexible sleeve and used to generate heat; and A lifting bracket is used to support the flexible sleeve.

2. The compressed air pipeline external heating device according to claim 1, characterized in that: The flexible sleeve comprises an outer lining layer, a heat-insulating layer, a heating layer and an inner lining layer which are connected in sequence, and the heating element is located in the heating layer.

3. The compressed air pipeline external heating device according to claim 2, characterized in that: The edge of the outer lining layer extends toward the inner lining layer and is connected to the inner lining layer.

4. The compressed air pipeline external heating device according to claim 1, characterized in that: The flexible sleeve has a first side and a second side opposite to each other, wherein one side is provided with an adhesive portion and the other side is provided with an adhesive matching portion, and when the flexible sleeve is in a contracted state, the adhesive portion and the adhesive matching portion at least partially overlap.

5. The compressed air pipeline external heating device according to claim 4, characterized in that: The flexible sleeve includes a body and a plurality of wing-shaped portions, wherein the plurality of wing-shaped portions are located on one side of the body and are arranged at intervals along the length direction of the body at the edge of the body. There are a plurality of adhesive portions, which are arranged one by one on the wing-shaped portions.

6. The compressed air pipeline external heating device according to claim 1, characterized in that: Connecting parts are arranged at both ends along the length direction of the flexible sleeve, and the connecting parts define through holes, and fasteners are inserted into the through holes.

7. The compressed air pipeline external heating device according to claim 1, characterized in that: The lifting bracket includes a first bracket, a second bracket and a locking piece. The second bracket is inserted into the first bracket and used to support the flexible sleeve. The second bracket is provided with an external thread, and the locking piece is threadedly connected to the external thread.

8. The compressed air pipeline external heating device according to claim 7, characterized in that: The first bracket and the second bracket are both provided in plurality, and the first bracket and the second bracket are provided in one-to-one correspondence. A support member is installed on the second bracket, and the support member is used to support the flexible sleeve.

9. The compressed air pipeline external heating device according to claim 8, characterized in that: The support member defines a groove, and the opening area of ​​the groove gradually increases from the groove bottom to the groove mouth.

10. The compressed air pipeline external heating device according to claim 7, characterized in that: The bottom of the first bracket is connected with an anti-skid pad.

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