Pipe sleeve type energy storage heater

Abstract

The pipe sleeve type energy storage heater comprises a pipe body and a heating plate, the inner circumferential wall of the pipe body is provided with a plurality of inner convex surfaces radially protruding towards the inner side of the pipe body and a plurality of inner concave surfaces radially protruding towards the outer side of the pipe body, the inner convex surfaces and the inner concave surfaces are both of axial extension structures, and the inner convex surfaces and the inner concave surfaces are arranged in parallel. The plurality of blades are sequentially and alternately arranged along the circumferential direction and are mutually connected; the pipe body comprises a pipe body and end pipes connected to the two ends of the pipe body, the pipe body is of a regular polygon structure, and each face of the pipe body is provided with an axially-arranged clamping groove with the two through ends. The end pipe is a circular pipe, the outer diameter of the end pipe is smaller than the inner diameter of the incircle of the pipe body, and the end pipe and the pipe body are coaxial so that a shoulder face can be formed at the joint of the end pipe and the pipe body. The number of the heating plates is consistent with that of the side faces of the pipe body, and the heating plates are inserted into the clamping grooves in a one-to-one correspondence mode. The heating efficiency is high, the medium in the pipe is uniformly heated, and the heating plate is convenient to lay, maintain and replace.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a tube-in-tube type energy storage heater. Background Art

[0002] Existing tube-and-sheath energy storage heaters basically install the heating elements directly into the pipe, so as to use the heating elements inside the pipe to heat the medium flowing through the pipe. Some tube-and-sheath energy storage heaters also place the heating elements outside the pipe to transfer heat to the medium inside through the pipe wall. The existing tube-and-sheath energy storage heaters with heating elements placed inside the pipe have large heating element losses and short service life. The tube-and-sheath energy storage heaters with heating elements placed outside the pipe have low heating efficiency, and the medium located in the middle of the pipe is heated the slowest, while the medium located near the pipe wall is heated the fastest. Therefore, the existing tube-and-sheath energy storage heaters with external heating elements are prone to uneven heating of the medium in the pipe. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a tube-in-tube type energy storage heater.

[0004] The utility model proposes a tube-in-tube energy storage heater, comprising: a tube body and a heating plate, wherein:

[0005] The inner circumferential wall of the tube body has an inner convex surface that protrudes radially inward and an inner concave surface that protrudes radially outward, and both the inner convex surface and the inner concave surface are axially extending structures. There are multiple inner convex surfaces and multiple inner concave surfaces, which are alternately arranged in the circumferential direction and connected to each other.

[0006] The tube body includes a tube body and end tubes at both ends connected to the tube body. The tube body is a regular polygonal structure, and each surface thereof has a slot arranged axially and passing through both ends. The end tubes are circular tubes, the outer diameter of the end tubes is smaller than the inner diameter of the connecting circle of the tube body, and the end tubes are coaxial with the tube body to form a shoulder surface at the connection between the end tubes and the tube body.

[0007] The number of heating plates is consistent with the number of the side surfaces of the tube body, and each heating plate is inserted into the card slot in a one-to-one correspondence.

[0008] Preferably, the inner convex surface includes a first inner convex surface and a second inner convex surface whose radial protrusion height is lower than that of the first inner convex surface, and each second inner convex surface is arranged between adjacent first inner convex surfaces.

[0009] Preferably, the exterior of the tube body is covered with a heat-insulating sleeve.

[0010] Preferably, it also includes a front mounting seat and a rear mounting seat, which are respectively fixed to the shoulder surfaces at both ends of the pipe body by fasteners, and the front mounting seat and the rear mounting seat are respectively against the two ends of the insulation sleeve.

[0011] Preferably, a wiring slot is provided on the front mounting seat and / or the rear mounting seat.

[0012] Preferably, the connection point between the fastener and the shoulder surface is located at the angle between two adjacent surfaces of the pipe body.

[0013] Preferably, both the front-end mounting seat and the rear-end mounting seat are provided with a clearance hole and mounting holes circumferentially arranged around the clearance hole. The end tube at one end of the tube body passes through the clearance hole on the front-end mounting seat, and the end tube at the other end of the tube body passes through the clearance hole on the rear-end mounting seat. The mounting holes on the front-end mounting seat and the rear-end mounting seat are all located at the angle between two adjacent surfaces of the tube body. The fasteners pass through the mounting holes one by one to install the front-end mounting seat and the rear-end mounting seat on the shoulder surfaces at both ends of the tube body.

[0014] Preferably, the front mounting seat and the rear mounting seat each include an end face and a mounting surface perpendicular to the end face, the end faces of the front mounting seat and the rear mounting seat are respectively abutted against the corresponding shoulder surfaces, and assembly holes are provided on the mounting surfaces.

[0015] In the present invention, the inner wall of the tube body is set to a structure composed of an inner convex surface and an inner concave surface, and the inner concave surface and the inner convex surface are both axially extended structures to ensure the smoothness of the flow of the medium in the tube, while increasing the contact area between the medium and the tube body, thereby increasing the heating efficiency. At the same time, the present invention also sets the tube body to a structure composed of a tube body and an end tube, and sets the tube body to a regular polygonal structure, and sets a slot on each of its faces, and inserts the heating plate into the slot, so that a heating plate is laid on each face of the tube body. The end tube is set to a circular tube, the outer diameter of the end tube is smaller than the inner diameter of the connecting circle of the tube body, and the end tube is coaxial with the tube body to form a shoulder surface at the connection between the end tube and the tube body. This structural design of the tube body is convenient for laying the heating plate and can increase the laying area of the heating plate, and the structure of the circular end tube is also convenient for connection with other pipelines. Therefore, the heating tube has the advantages that the medium in the tube is heated evenly and the heating plate is easy to lay, repair and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the tube body in a tube-in-tube type energy storage heater proposed in the present invention;

[0017] Figure 2 This is a schematic diagram of the end structure of the tube body in a tube-in-tube type energy storage heater proposed in the present invention;

[0018] Figure 3 This is a schematic diagram of the assembly of the heating plate and the tube body in a tube-in-tube type energy storage heater proposed in the present invention;

[0019] Figure 4This is a schematic diagram of the appearance and structure of a tube-sheath type energy storage heater proposed in the utility model;

[0020] Figure 5 This is a schematic diagram of an exploded view of a tube-in-tube energy storage heater proposed in the present invention. DETAILED DESCRIPTION

[0021] Reference Figure 1-3 The utility model proposes a tube-in-tube energy storage heater, comprising: a tube body 1 and a heating plate 2, wherein:

[0022] The inner circumferential wall of the tube body 1 features a radially inwardly projecting convex surface a1 and an outwardly projecting concave surface a2. Both convex surface a1 and concave surface a2 extend axially to ensure smooth flow of the medium within the tube and enhance uniform heating between the central and peripheral areas of the medium. Multiple convex surfaces a1 and concave surfaces a2 are provided, alternating along the circumference and interconnected. This concave-convex design effectively increases the contact area between the medium and the inner wall of the tube body 1.

[0023] The tube body 1 includes a tube body 11 and end tubes 12 at both ends connected to the two ends of the tube body 11. The tube body 11 is a regular polygonal structure, and each of its faces has a slot that is axially arranged and passes through both ends; the end tube 12 is a circular tube, and the outer diameter of the end tube 12 is smaller than the inner diameter of the connecting circle of the tube body 11, and the end tube 12 is coaxial with the tube body 11 to form a shoulder surface b at the connection between the end tube 12 and the tube body 11. The number of heating plates 2 is consistent with the number of side surfaces of the tube body 1, and each heating plate 2 is inserted into the slot one by one. This structural design not only facilitates the laying of the heating plates 2, but also increases the laying area of the heating plates 2, and the structure of the circular end tubes 12 is also convenient for connection with other pipelines.

[0024] Furthermore, the inner convex surface a1 in this embodiment includes a first inner convex surface and a second inner convex surface with a radially raised height lower than the first inner convex surface. Each second inner convex surface is positioned between adjacent first inner convex surfaces. This design of two different inner convex surfaces a1, each of which has a higher or lower height, enables radially layered heating of the medium within the tube, thereby further improving the uniformity of heating across the medium within the tube. Furthermore, this design of two different inner convex surfaces a1 increases the overall number of inner convex surfaces a1, thereby further increasing the surface area of the inner wall of the tube body 1.

[0025] Furthermore, this embodiment also has an insulation sleeve 3 on the outside of the tube body 11. The insulation sleeve 3 can not only prevent heat loss and enhance the effective utilization of heat, but also form protection on the outside of the heating plate 2 and radially constrain the heating plate 2 so that it is firmly attached to the side of the tube body 11.

[0026] Reference Figure 4-5In addition, the present invention proposes a pipe-sleeve type energy storage heater, which further includes a front mounting seat 4 and a rear mounting seat 5. The front mounting seat 4 and the rear mounting seat 5 are respectively fixed to the shoulder surfaces b at both ends of the pipe body 11 by fasteners. The front mounting seat 4 and the rear mounting seat 5 respectively abut against the two ends of the thermal insulation sleeve 3. The thermal insulation sleeve 3 is constrained by the front mounting seat 4 and the rear mounting seat 5 and cannot move axially, thereby maintaining its fixed position. When it is necessary to inspect the inner heating plate 2, only the mounting seat at one end needs to be removed, and the thermal insulation sleeve 3 can be directly pulled out to expose the heating plate 2.

[0027] In addition, a wiring slot c is provided on the front mounting seat 4 and / or the rear mounting seat 5, and the cables connected to each heating plate 2 pass through the wiring slot c to be constrained by the wiring slot c, ensuring that the cables are neat and orderly, thereby avoiding the problem of messy and cumbersome cables.

[0028] Furthermore, in this embodiment, the connection point between the fastener and the shoulder surface b is at the angle between two adjacent surfaces of the tube body 11. The radial dimension of the shoulder surface b at the edge of the tube body 11 is the largest. Setting the connection point at this position makes the connection most secure.

[0029] The specific mounting structure of the front end mounting seat 4 and the rear end mounting seat 5 and the tube body 11 is as follows: the front end mounting seat 4 and the rear end mounting seat 5 are both provided with a clearance hole and mounting holes circumferentially arranged around the clearance hole, the end tube 12 located at one end of the tube body 11 passes through the clearance hole on the front end mounting seat 4, and the end tube 12 located at the other end of the tube body 11 passes through the clearance hole on the rear end mounting seat 5, and each mounting hole on the front end mounting seat 4 and the rear end mounting seat 5 are located at the angle between two adjacent surfaces of the tube body 11; each fastener passes through each mounting hole one by one to install the front end mounting seat 4 and the rear end mounting seat 5 on the shoulder surface b at both ends of the tube body 11.

[0030] In this embodiment, the front end mounting seat 4 and the rear end mounting seat 5 both include end faces and mounting surfaces perpendicular to the end faces. The end faces of the front end mounting seat 4 and the rear end mounting seat 5 are respectively abutted against the corresponding shoulder surfaces b, and assembly holes are provided on the mounting surfaces.

[0031] As can be seen from the above, the present invention sets the inner wall of the tube body 1 into a structure composed of an inner convex surface a1 and an inner concave surface a2, and makes the inner concave surface a2 and the inner convex surface a1 both axially extended structures to ensure the smooth flow of the medium in the tube, while increasing the contact area between the medium and the tube body 1, thereby increasing the heating efficiency. At the same time, the present invention also sets the tube body 1 into a structure composed of a tube body 11 and an end tube 12, and sets the tube body 11 into a regular polygon structure, and sets a slot on each of its faces, and inserts the heating plate 2 into the slot, so that a heating plate 2 is laid on each face of the tube body 11. The end tube 12 is set as a circular tube, the outer diameter of the end tube 12 is smaller than the inner diameter of the connecting circle of the tube body 11, and the end tube 12 is coaxial with the tube body 11 to form a shoulder surface b at the connection between the end tube 12 and the tube body 11. This structural design of the tube body 1 not only facilitates the laying of the heating plate 2, but also increases the laying area of the heating plate 2, and the structure of the circular end tube 12 is also convenient for connection with other pipelines. Therefore, the heating tube has the advantages that the medium in the tube is heated evenly and the heating plate 2 is easy to lay, repair and replace.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tube-in-tube energy storage heater, characterized in that: include: The tube body (1) and the heating plate (2), wherein: The inner peripheral wall of the tube body (1) has an inner convex surface (a1) that radially protrudes toward the inner side thereof and an inner concave surface (a2) that radially protrudes toward the outer side thereof, and both the inner convex surface (a1) and the inner concave surface (a2) are axially extending structures. A plurality of the inner convex surfaces (a1) and the inner concave surfaces (a2) are provided, and are alternately arranged in sequence along the circumferential direction and connected to each other. The tube body (1) comprises a tube body (11) and end tubes (12) at both ends connected to the tube body (11). The tube body (11) is a regular polygonal structure, and each surface thereof has a slot arranged axially and passing through both ends. The end tube (12) is a circular tube, the outer diameter of the end tube (12) is smaller than the inner diameter of the connecting circle of the tube body (11), and the end tube (12) and the tube body (11) are coaxial to form a shoulder surface (b) at the connection between the end tube (12) and the tube body (11). The number of the heating plates (2) is consistent with the number of the side surfaces of the tube body (1), and each heating plate (2) is inserted into the card slot in a one-to-one correspondence.

2. The tube-in-tube energy storage heater according to claim 1, characterized in that: The inner convex surface (a1) includes a first inner convex surface and a second inner convex surface whose radial protrusion height is lower than that of the first inner convex surface, and each second inner convex surface is arranged between adjacent first inner convex surfaces.

3. The tube-in-tube energy storage heater according to claim 1, characterized in that: The exterior of the tube body (11) is sheathed with a heat-insulating sleeve (3).

4. The tube-in-tube energy storage heater according to claim 3, characterized in that: The invention also includes a front mounting seat (4) and a rear mounting seat (5), which are respectively fixed to the shoulder surfaces (b) at both ends of the pipe body (11) by fasteners, and the front mounting seat (4) and the rear mounting seat (5) respectively abut against both ends of the thermal insulation sleeve (3).

5. The tube-in-tube energy storage heater according to claim 4, characterized in that: A wiring slot (c) is provided on the front mounting seat (4) and / or the rear mounting seat (5).

6. The tube-in-tube energy storage heater according to claim 4, characterized in that: The connection point between the fastener and the shoulder surface (b) is located at the angle between two adjacent surfaces of the pipe body (11).

7. The tube-in-tube energy storage heater according to claim 4, characterized in that: The front mounting seat (4) and the rear mounting seat (5) are both provided with a clearance hole and a mounting hole circumferentially arranged outside the clearance hole; the end tube (12) located at one end of the tube body (11) passes through the clearance hole on the front mounting seat (4); the end tube (12) located at the other end of the tube body (11) passes through the clearance hole on the rear mounting seat (5); and each mounting hole on the front mounting seat (4) and the rear mounting seat (5) are located at the angle between two adjacent surfaces of the tube body (11); each fastener passes through each mounting hole in a one-to-one correspondence to install the front mounting seat (4) and the rear mounting seat (5) on the shoulder surface (b) at both ends of the tube body (11).

8. The tube-in-tube energy storage heater according to any one of claims 4 to 7, characterized in that: The front end mounting seat (4) and the rear end mounting seat (5) both include an end face and a mounting surface perpendicular to the end face. The end faces of the front end mounting seat (4) and the rear end mounting seat (5) are respectively in contact with the corresponding shoulder surface (b), and an assembly hole is provided on the mounting surface.

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