Electric heating integrated heat preservation cover

Abstract

The utility model discloses an electric heating integrated heat preservation cover which comprises an outer heat preservation cover, an inner heat preservation cover and a heater which are sequentially arranged from outside to inside, a heat preservation layer is arranged between the outer heat preservation cover and the inner heat preservation cover, the two ends of the inner heat preservation cover are in a boss shape, bosses at the two ends of the inner heat preservation cover stretch out of the outer heat preservation cover, and end heat bosses are arranged at the stretching-out positions. A sealing sleeve is arranged between the end heat boss and the outer heat preservation cover. A reflecting layer is arranged between the inner heat preservation cover and the heater; the heater is fixed on the heater supporting frame, two ends of the heater extend out of the outer heat preservation cover and are connected with an external electric heating device after extending out, and a heat insulation layer is arranged between the supporting frame and the inner heat preservation cover. Heat generated by the electric heater in the heat preservation cover heats a medium in the target pipeline, the heating effect of the heat preservation cover is improved, and the temperature can be rapidly increased to the temperature needed by the process; and the generated heat is insulated by the heat insulation cover body, so that the medium in the pipeline is prevented from being solidified during detection, the repair and maintenance times are reduced, and the production and the use are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric heaters, in particular to an electric heating integrated heat preservation cover. Background Art

[0002] Certain flowing liquids, especially those with a freezing point around 100°C and a heating rate greater than 15°C / h, lose heat quickly during the process. Electric heaters use electrical energy to replenish the heat lost by the auxiliary heating element during the process, thereby maintaining the optimal high process temperature of the flowing medium.

[0003] When transporting high-temperature media in existing pipelines, solidification occurs when the freezing point of the medium is around 100°C. When the temperature drops below 100°C, or when the static temperature drops below 100°C, the pipeline must be heated. Otherwise, the monitoring equipment and the medium in the pipeline will not function properly, leading to monitoring and operational failures. The commonly used electric heating method in existing technologies takes a long time to heat, failing to meet the technical requirements of rapid temperature increase. This can cause the oil and gas in the pipeline to solidify during testing, affecting the operation of the testing equipment and increasing the number of repairs and maintenance, hindering production and use. Improvements are urgently needed. Utility Model Content

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide an electric heating integrated insulation cover. The heat generated by the electric heater heats the internal medium of the target pipeline, and the generated heat is then insulated by the insulation cover body to improve its heating effect. It is particularly suitable for operating conditions where the freezing point of the medium in the pipe is around 100°C, and can completely solve the deficiency of the prior art that it cannot maintain the temperature of the flowing medium.

[0005] The purpose of the utility model is achieved through the following technical solutions: an electric heating integrated insulation cover, comprising an outer insulation cover, an inner insulation cover and a heater arranged in sequence from the outside to the inside, an insulation layer is provided between the outer insulation cover and the inner insulation cover, the two ends of the inner insulation cover are boss-shaped, and the bosses at both ends of the inner insulation cover extend from the outer insulation cover, the extension point is a heat end boss, and a sealing sleeve is provided between the heat end boss and the outer insulation cover; a reflecting layer is provided between the inner insulation cover and the heater; the heater is fixed on a heater support frame, the two ends of the heater extend from the outer insulation cover, and after extension, they are connected to an external electric heating device, and a thermal insulation layer is provided between the support frame and the inner insulation cover.

[0006] As one of the preferred methods, the thermal insulation layer includes an inner thermal insulation cover thermal insulation layer, a bracket thermal insulation layer and a bracket thermal insulation end face. The inner thermal insulation cover thermal insulation layer is a layer of thermal insulation material coated on the inner wall of the inner thermal insulation cover, the bracket thermal insulation layer is a layer of thermal insulation material coated on the outer surface of the support frame, and the bracket thermal insulation end face is arranged on the two end faces of the support frame.

[0007] As one of the preferred embodiments, the heater is an electric heating tube, which is coiled in a U shape and fixed to the support frame by a heater buckle.

[0008] As one of the preferred methods, the two ends of the outer insulation cover of the heater are respectively the heater inlet end and the heater outlet end, the heater inlet end and the heater outlet end are respectively connected to the electrical output end of the external electric heating device, and the external electric heating device is equipped with a temperature controller, and the temperature probe of the temperature controller is fixed on the inner wall of the inner insulation cover.

[0009] As one of the preferred methods, the entire insulation cover is formed by merging two semi-cylinders, and a fastening link buckle is provided on the outer side of the outer insulation cover. The two semi-cylindrical outer insulation covers are connected as one through the fastening link buckle. An insulating layer buckle is provided on the inner insulation cover, and the two semi-cylindrical inner insulation covers are connected as one through the insulating layer buckle.

[0010] As one of the preferred manners, the end surface of the inner thermal insulation cover is in a concave-convex structure, and the two inner thermal insulation covers are connected by staggered splicing through the concave-convex structure.

[0011] As one of the preferred manners, the end surface of the outer thermal insulation cover is in a concave-convex structure, and the two outer thermal insulation covers are connected by staggered splicing through the concave-convex structure.

[0012] As one of the preferred embodiments, a plurality of outer cover buckles are provided on the outer side surface of the outer heat-insulating cover, and a handle is provided on the outer cover buckle; an outer cover inner support frame is provided on the inner side surface of the outer heat-insulating cover.

[0013] As one of the preferred embodiments, the two end surfaces of the heater support frame are serrated hard contact surfaces.

[0014] As one of the preferred ways, the heater is fixed to the heater support frame by means of a heater buckle, and a plurality of semicircular support structures are provided in the middle of the heater support frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the electric heating integrated heat preservation cover of the present invention has the following advantages:

[0016] 1. The electric heater is used to achieve uniform heat release. The structure of the electric heater in the utility model can not only heat evenly with a small temperature gradient, but also quickly heat up to the temperature required by the process;

[0017] 2. The heat preservation cover can achieve heat preservation, improve heating effect and save energy; it can prevent the medium in the pipeline from solidifying during detection, and the monitoring equipment will not be affected, thus reducing the number of repairs and maintenance, which is conducive to production and use;

[0018] 3. The overall split structure makes construction, use and maintenance more convenient and has a long service life;

[0019] 4. External heating source can realize remote control and automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram when the target pipeline is placed in the thermal insulation cover of the utility model.

[0021] Figure 2 It is a structural diagram of the heater.

[0022] Figure 3 It is a schematic diagram of the exploded structure of the thermal insulation cover of the utility model.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the thermal insulation cover of the present utility model.

[0024] Figure 5 It is another cross-sectional structural diagram of the thermal insulation cover of the present invention.

[0025] Figure 6 It is another cross-sectional structural diagram of the thermal insulation cover of the present invention.

[0026] Figure 7 It is another cross-sectional structural diagram of the thermal insulation cover of the present invention.

[0027] In the drawings: outer insulation cover 1, insulation layer 2, inner insulation cover 3, reflecting layer 4, heater 5, end heat boss 6, thermal insulation layer 7, inner insulation cover thermal insulation layer 71, bracket thermal insulation layer 72, bracket thermal insulation end face 73, heater inlet end 8, heater outlet end 9, heater support frame 10, outer cover buckle 11, sealing sleeve 12, outer insulation cover end face 13, heater buckle 14, outer cover inner support frame 15, thermal insulation layer buckle 16, target pipe 17, fastening link buckle 18, serrated hard contact surface 19. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] like Figure 1-7 As shown, an electric heating integrated heat preservation cover comprises an outer heat preservation cover 1, a heat preservation layer 2, an inner heat preservation cover 3, a reflective layer 4 and a heater 5 which are arranged in sequence from the outside to the inside.

[0030] The entire thermal insulation cover body is formed by merging two semi-cylinders, which is equivalent to splitting a cylindrical thermal insulation cover body into two halves along the central axis. When in use, the two semi-cylinders can be merged together. Each functional unit of the entire thermal insulation cover body is tightly combined to form an insulation whole, which is convenient for quick installation and quick disassembly and easy to use. Specifically, a fastening link buckle 18 is provided on the outer side surface of the outer thermal insulation cover 1, and the two semi-cylindrical outer thermal insulation covers 1 are connected as a whole through the fastening link buckle 18. In addition, the outer thermal insulation cover end face 13 of the outer thermal insulation cover 1 is a concave-convex structure, and the two outer thermal insulation covers are staggered and spliced ​​by the concave-convex structure when connected. In addition, a number of outer cover buckles 11 are provided on the outer side surface of the outer thermal insulation cover 1, and a handle is provided on the outer cover buckle 11 to facilitate the movement of the whole. A thermal insulation layer buckle 16 is provided on the inner thermal insulation cover 3, and the two semi-cylindrical inner thermal insulation covers 3 are connected as a whole through the thermal insulation layer buckle 16. In this embodiment, the thermal insulation cover body is fixed to the outer wall of the target pipe 6 by fixed fasteners to prevent it from falling off; for long-distance target pipes, multiple thermal insulation covers can also be spliced ​​together.

[0031] The end surface of the inner insulation cover 3 features a concave-convex structure, and the two inner insulation covers are connected by staggered joints using this structure. Specifically, the ends of the inner insulation cover 3 are boss-shaped, and the bosses at each end of the inner insulation cover 3 extend out of the outer insulation cover 1 at the end heat-exiting boss 6. A sealing sleeve 12 is provided between the end heat-exiting boss 6 and the outer insulation cover 1. The sealing sleeve is located at the ends of the insulation cover and at the opening of the metal cross-section of the inner and outer insulation covers to ensure effective sealing.

[0032] The end faces of the outer insulation cover and the inner insulation cover are both designed to be boss-shaped, and the insulation layer between the two can also be designed to be a boss shape that matches the boss shape. The boss shape designed into the end faces of the outer insulation cover and the inner insulation cover is conducive to the staggered connection between the insulation cover body and the other insulation cover body. Compared with flat splicing of two insulation cover bodies, the staggered connection will have better airtightness, lower heat loss, and higher heat utilization rate. In addition, because the material of the insulation cover body needs to be made of metal, if the contact surfaces between the insulation cover bodies are flat, then the contact surfaces of the two insulation cover bodies need to be very flat, and the circumferential dimensions should be as consistent as possible, otherwise the airtightness after splicing will be affected. Although this requirement can be achieved for new products, it will be difficult and troublesome for users who need to disassemble and install frequently and are not professional installers. Therefore, the end face of the thermal insulation cover of the present invention is designed to be a boss type, which has the advantage of being easy to install and disassemble, and can be installed without the need for professional personnel. At the same time, it can also avoid the problem of poor sealing after the thermal insulation cover has been used for a long time. The end face adopts a concave-convex connection, and the two end faces of the inner thermal insulation cover and the outer thermal insulation cover will appear in an overlapping and cross-combination. During installation, it can be achieved by simply aligning the position, and the concave-convex structure has a better sealing effect, and the thermal insulation effect is also better.

[0033] An outer cover inner support frame 15 is provided on the inner side surface of the outer heat-insulating cover 1 to support the shape of the entire heat-insulating cover to prevent deformation due to external forces and thus affecting the heater.

[0034] The heat-insulating layer 2 between the outer heat-insulating cover 1 and the inner heat-insulating cover 3 is made of heat-insulating material and is used to prevent temperature from dissipating and to keep the heat in.

[0035] A reflective layer 4 is located between the inner insulation cover 3 and the heater 5. This layer is riveted to the support frame and reflects heat. Located behind the heater, it is typically made of mirrored metal and reflects heat generated by the heater back to the target pipe, reheating it. The heat difference between the reflective layer and the heat behind it is similar to that of a fire extinguisher, primarily reducing heat loss.

[0036] A thermal insulation layer 7 is provided between the support frame 10 and the inner insulation cover 3. This insulation layer, located between the support frame and the insulation body (i.e., the target pipeline 17), reduces the rate of heat conduction under direct contact conditions. Made of a non-metallic material with extremely low thermal conductivity, the insulation layer separates the two metal layers, preventing direct metal-to-metal contact and thus reducing heat transfer.

[0037] Specifically, the thermal insulation layer 7 includes an inner insulation cover thermal insulation layer 71, a bracket thermal insulation layer 72, and bracket thermal insulation end surfaces 73. The inner insulation cover thermal insulation layer 71 is a layer of thermal insulation material coated on the inner wall of the inner insulation cover 3, the bracket thermal insulation layer 72 is a layer of thermal insulation material coated on the outer surface of the support frame 10, and the bracket thermal insulation end surfaces 73 are provided on both end surfaces of the support frame 10. Covering all surfaces of the metal support frame with thermal insulation material eliminates direct metal contact between the support frame and the inner and outer insulation covers when riveted, which can greatly reduce heat conduction and heat radiation from the heater.

[0038] The two end faces of the heater support frame are serrated hard contact surfaces 19. The purpose of the serrated hard contact surfaces is: since the overall weight of the insulation cover needs to be supported by the support frame at both ends, the heater support frame, as a support for the whole, must have hard contact at both ends. If the hard contact is a surface, the internal heat will be transferred to the outside of the insulation cover more quickly, the temperature of the insulation cover will be higher, the insulation efficiency will be reduced, and the insulation design requirements will not be met. To this end, the end face contact of the support frame adopts a serrated shape, which changes the surface contact into multiple point contacts, reducing heat transfer, lowering the temperature of the insulation cover, and improving the insulation efficiency.

[0039] The heater 5 is fixed to the heater support frame 10, and the two ends of the heater 5 extend out of the outer insulation cover 1, which is connected to the external electric heating device after extension. Specifically, the heater is an electric heating tube, which is coiled in a U shape and fixed to the support frame 10 by a heater clip 14. The arc of the U-shaped heater reduces the length of the plane straight line, is more similar to the inner wall structure of the pipeline, is closer to the pipeline wall, and the heat transfer distance is shorter. The heat is more uniform, the winding of the heater is uniform, and the heating is also uniform.

[0040] The two ends of the external heat preservation cover 1 of the heater 5 are respectively a heater inlet end 8 and a heater outlet end 9, and the heater inlet end 8 and the heater outlet end 9 are respectively connected to the electrical output end of the external electric heating device. The heater 5 is fixed to the heater support frame 10 by a heater clip 14, and the middle part of the heater support frame 10 is provided with several semi-circular support structures. The external electric heating device serves as an external power source to provide electrical energy for the heater to generate heat, thereby enabling the heater to generate heat. The heat generated by the heater has two parts, one part directly heats the target pipeline, and the other part of the heat is sealed and insulated by the heat preservation cover and is used again to heat the target pipeline.

[0041] The external electric heating device is equipped with a temperature controller, and the temperature probe of the temperature controller is fixed on the inner wall of the inner heat-insulating cover 3. When the temperature probe of the temperature controller detects that the temperature of the target pipeline is lower than the set temperature, the heater automatically heats up. When the temperature reaches the set temperature value, the temperature controller automatically disconnects the power supply, stops supplying power, and the heater stops working, entering the heat preservation phase. The process of automation is as follows: the temperature data of the target pipeline is transmitted to the digital display controller through the temperature sensor. The digital display controller determines whether the difference between the temperature set value and the current temperature of the target pipeline is positive or negative, and then feeds back the signal to the control AC contactor. The AC contactor is closed to supply power to the electric heater for heating. Otherwise, the AC contactor is disconnected, and the power supply to the electric heater is stopped and heating is stopped.

[0042] The utility model is a heat-insulating cover composed of an inner protective cover, an intermediate insulation layer, an outer protective cover, a support frame, and a sealing sleeve. The heater generates heat to heat the interior of the target pipeline, and the generated heat is then insulated by the heat-insulating cover as a whole, thereby improving its heating and heat-insulating effect. Due to the design of the reflective layer and the thermal insulation layer, the heating time is greatly shortened, and the solidification of oil and gas in the pipeline during detection is avoided. The energy storage heating heat-insulating cover is suitable for working conditions where the target pipeline medium temperature is greater than 200°C and the heating rate is relatively fast (greater than 15°C / h).

[0043] This utility model's heat preservation cover fully meets the existing target pipeline process requirements. The electric heater evenly releases heat along the length of the pipeline or over a large area of ​​the tank volume. The electric heater has a small temperature gradient and a long thermal stability time, making it suitable for long-term use. The required heat can be quickly heated to the process temperature. The heater has the advantages of high thermal efficiency, energy conservation, shortened heating time, easy construction and installation, no pollution, long service life, and can be remotely and automatically controlled.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric heating integrated heat preservation cover, comprising an outer heat preservation cover, an inner heat preservation cover and a heater arranged in sequence from the outside to the inside, Features: An insulation layer is provided between the outer insulation cover and the inner insulation cover, the two ends of the inner insulation cover are boss-shaped, and the bosses at the two ends of the inner insulation cover extend out of the outer insulation cover, the extension point is a heat end boss, and a sealing sleeve is provided between the heat end boss and the outer insulation cover; a reflective layer is provided between the inner insulation cover and the heater; the heater is fixed on a heater support frame, the two ends of the heater extend out of the outer insulation cover, and are connected to an external electric heating device after extension, and a thermal insulation layer is provided between the support frame and the inner insulation cover.

2. The electric heating integrated heat preservation cover according to claim 1, Features: The thermal insulation layer includes an inner thermal insulation layer, a bracket thermal insulation layer and a bracket thermal insulation end face. The inner thermal insulation layer is a layer of thermal insulation material coated on the inner wall of the inner thermal insulation layer, the bracket thermal insulation layer is a layer of thermal insulation material coated on the outer surface of the support frame, and the bracket thermal insulation end face is arranged on the two end faces of the support frame.

3. The electric heating integrated heat preservation cover according to claim 1, Features: The heater is an electric heating tube, which is coiled in a U shape and fixed on the support frame through a heater buckle.

4. The electric heating integrated heat preservation cover according to claim 3, Features: The two ends of the outer insulation cover of the heater extension are respectively a heater inlet end and a heater outlet end, and the heater inlet end and the heater outlet end are respectively connected to the electrical output end of the external electric heating device. The external electric heating device is equipped with a temperature controller, and the temperature probe of the temperature controller is fixed on the inner wall of the inner insulation cover.

5. The electric heating integrated heat preservation cover according to claim 1, Features: The entire insulation cover is formed by merging two semi-cylinders. A fastening link buckle is provided on the outer side of the outer insulation cover, and the two semi-cylindrical outer insulation covers are connected as a whole through the fastening link buckle. An insulation layer buckle is provided on the inner insulation cover, and the two semi-cylindrical inner insulation covers are connected as a whole through the insulation layer buckle.

6. The electric heating integrated heat preservation cover according to claim 5, Features: The end surface of the inner thermal insulation cover is in a concave-convex structure, and the two inner thermal insulation covers are connected by staggered splicing through the concave-convex structure.

7. The electric heating integrated heat preservation cover according to claim 5, Features: The end surface of the outer thermal insulation cover is in a concave-convex structure, and the two outer thermal insulation covers are staggered and spliced ​​through the concave-convex structure when connected.

8. The electric heating integrated heat preservation cover according to claim 7, Features: A plurality of outer cover buckles are arranged on the outer side surface of the outer heat-insulating cover, and handles are arranged on the outer cover buckles; an outer cover inner support frame is arranged on the inner side surface of the outer heat-insulating cover.

9. The electric heating integrated heat preservation cover according to claim 1, Features: The two end surfaces of the heater support frame are serrated hard contact surfaces.

10. The electric heating integrated heat preservation cover according to claim 9, Features: The heater is fixed on the heater support frame through a heater buckle, and a plurality of semicircular ring support structures are arranged in the middle of the heater support frame.

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