High-temperature-resistant aging detection oven for pipes

Abstract

The drying oven comprises a drying oven body, a detachable constant-temperature heat conduction box with an opening in the front face is arranged in an inner cavity of the drying oven body, electric heating pipes are located outside the constant-temperature heat conduction box, and heat conduction fin plates are arranged on the back face, the top, the bottom and the two sides of the constant-temperature heat conduction box at equal intervals. And heat dissipation fin plates are arranged on the back surface, the top, the bottom and the two sides of the inner wall of the constant-temperature heat conduction box at equal intervals. The heat conduction fin plates and the heat dissipation fin plates which are used for absorbing heat and dissipating heat are respectively arranged inside and outside the constant-temperature heat conduction box at equal intervals, on one hand, heat energy generated by the electric heating pipes is fully absorbed, energy consumption is reduced, and on the other hand, heat is uniformly transferred to the inside, so that internal pipes are heated more uniformly; the thermal conductivity of the plastic pipe frame is close to that of the pipe, so that the local internal structure is prevented from being damaged by local overheating of the pipe, the detection scientificity is improved, and the detection result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe quality, in particular to an oven for detecting the high-temperature aging resistance of pipes. Background Art

[0002] After the production of PP pipes and PVC pipes, high-temperature aging detection is required. Currently, an oven is commonly used to simulate a high-temperature environment, heat the pipes to be detected inside for a certain period of time, and then detect the aging degree of the pipes, including but not limited to appearance, strength, hardness, flexibility, etc. By detecting and improving the pipe quality, the reliability of the pipes in the actual use environment is ensured.

[0003] Currently, there are two types of internal structures of the oven for detecting high-temperature aging resistance. One is to directly install electric heating tubes equidistantly in the inner cavity, and the other is to install electric heating tubes equidistantly on the inner wall of the oven inner cavity and then install a layer of metal isolation inner liner in the inner cavity to isolate the electric heating tubes and the pipes. When detecting existing pipes, the pipes are directly placed in the oven for high-temperature heating simulation through a placement rack welded by steel bars.

[0004] However, the oven directly generates and dissipates heat through the electric heating tubes. Since the electric heating tubes inside the oven are installed equidistantly with gaps, the temperature is higher at the position close to the electric heating tubes, and the temperature is lower at the position between two adjacent electric heating tubes, resulting in different heat transfer from different positions in the oven inner cavity to the pipes, affecting the heating and detection of the pipes. In addition, the materials of plastic resin pipes such as the detected PP pipes and PVC pipes have lower thermal conductivity than the metal placement rack, and the local positions of the pipes in direct contact with the placement rack are heated stronger, resulting in changes in the microscopic atomic and molecular structure of the local positions of the pipes, directly affecting the microscopic structure of the entire pipe, making it more likely to age or be damaged, affecting the detection results, and there are deficiencies. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model provides an oven for detecting the high-temperature aging resistance of pipes, which is used to solve the problems that different positions transfer heat to the pipes differently when electric heating tubes are installed equidistantly in the inner cavity of the commonly used oven for detecting high-temperature aging resistance, and the metal placement rack for placing the pipes has higher thermal conductivity than the pipes, resulting in overheating of the local positions of the pipes and affecting the detection results.

[0006] To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A high-temperature aging detection oven for pipe materials, comprising an oven main body, wherein a box door is installed on the front of the oven main body, electric heating tubes are equidistantly installed on the top, bottom, back and both sides of the inner cavity of the oven main body, a constant-temperature heat conduction box which is detachable and has an open front is arranged inside the inner cavity of the oven main body, the electric heating tubes are located outside the constant-temperature heat conduction box, heat conduction fins are equidistantly arranged on the back, top, bottom and both sides of the constant-temperature heat conduction box, and heat dissipation fins are equidistantly arranged on the back, top, bottom and both sides of the inner wall of the constant-temperature heat conduction box.

[0008] A support frame is fixedly installed on the inner wall of the constant-temperature heat conduction box, a plastic pipe rack for placing pipe materials is installed on the support frame, and placing grooves for placing pipe materials are equidistantly formed in the plastic pipe rack.

[0009] Preferably, the electric heating tubes on the top, bottom and both sides of the inner cavity of the oven main body are perpendicular to the front of the oven main body, and the electric heating tubes on the back of the inner cavity of the oven main body are installed in the horizontal direction or the vertical direction.

[0010] Preferably, the heat conduction fins on the outer wall of the constant-temperature heat conduction box are perpendicular to the outer wall of the constant-temperature heat conduction box and parallel to the corresponding electric heating tubes.

[0011] Preferably, the electric heating tubes are embedded in the heat conduction fins, and the distances between the heat conduction fins and the electric heating tubes are equal.

[0012] Preferably, the heat dissipation fins on the inner wall of the constant-temperature heat conduction box correspond to the heat conduction fins on the outer wall of the constant-temperature heat conduction box in position and are parallel to each other.

[0013] Preferably, multiple groups of the plastic pipe racks are equidistantly arranged in the vertical direction inside the constant-temperature heat conduction box.

[0014] Preferably, guide rails perpendicular to the front of the oven main body are installed on both sides of the bottom of the inner cavity of the oven main body, and the constant-temperature heat conduction box is slidably connected to the guide rails through guide wheels.

[0015] Preferably, the front ends of the guide rails are open and the rear ends are closed, and a stop block for blocking the guide wheels from sliding forward is placed at the position corresponding to the front ends of the guide rails at the bottom of the inner cavity of the oven main body.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model solves the problems existing in the conventional high-temperature aging detection oven that the heat transfer to the pipe at different positions is different when the electric heating tubes are installed equidistantly in the inner cavity of the oven, and the metal placement rack for placing the pipes has a higher thermal conductivity than the pipes, resulting in overheating at local positions of the pipes and affecting the detection results. By setting a constant-temperature heat conduction box between the pipe and the oven main body, heat absorption and heat dissipation heat conduction fins and heat dissipation fins are respectively arranged at equal distances on the outside and inside of the constant-temperature heat conduction box. On the one hand, the heat energy generated by the electric heating tube is fully absorbed, reducing energy consumption. On the other hand, the heat is evenly transferred to the inside, making the pipes inside heat more evenly. In addition, the pipes are placed by a plastic pipe rack, and the thermal conductivity of the plastic pipe rack is similar to that of the pipes, avoiding local overheating of the pipes and damaging the local internal structure, thereby improving the scientific nature of the detection and ensuring more accurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view of the utility model;

[0019] Figure 2 is the front view of the internal structure of the oven main body and the constant-temperature heat conduction box of the utility model;

[0020] Figure 3 is the front view of the internal structure of the oven main body of the utility model;

[0021] Figure 4 is the top view of the constant-temperature heat conduction box of the utility model;

[0022] Figure 5 is the left view of the constant-temperature heat conduction box and the guide rail of the utility model;

[0023] Figure 6 is the front view of the corresponding position of the support frame of the utility model;

[0024] Figure 7 is the left view of the corresponding position of the support frame of the utility model.

[0025] In the figure: 1. Oven main body; 2. Door; 3. Electric heating tube; 4. Constant-temperature heat conduction box; 5. Heat conduction fin; 6. Heat dissipation fin; 7. Support frame; 8. Pipe; 9. Plastic pipe rack; 901. Placing groove; 10. Guide rail; 11. Guide wheel; 12. Stopper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] As shown Figures 1-7 in the figure, the utility model provides a technical solution: a high-temperature aging detection oven for pipes, which includes an oven main body 1. A box door 2 is installed on the front of the oven main body 1. Electric heating tubes 3 are equidistantly installed on the top, bottom, back and both sides of the inner cavity of the oven main body 1. The electric heating tubes 3 on the top, bottom and both sides of the inner cavity of the oven main body 1 are perpendicular to the front of the oven main body 1, and the electric heating tubes 3 on the back of the inner cavity of the oven main body 1 are installed horizontally or vertically.

[0028] A detachable and front-open constant-temperature heat-conducting box 4 is arranged inside the inner cavity of the oven main body 1. The constant-temperature heat-conducting box 4 is a metal box body. Guide rails 10 perpendicular to the front of the oven main body 1 are installed on both sides of the bottom of the inner cavity of the oven main body 1. The guide rails 10 and guide wheels 11 are used to facilitate the disassembly and installation of the constant-temperature heat-conducting box 4 and can position the constant-temperature heat-conducting box 4. The constant-temperature heat-conducting box 4 is slidably connected to the guide rails 10 through the guide wheels 11. The front end of the guide rail 10 is open and the rear end is closed. A stop block 12 for blocking the forward sliding of the guide wheel 11 is placed at the position corresponding to the front end of the guide rail 10 on the bottom of the inner cavity of the oven main body 1.

[0029] The electric heating tubes 3 are located outside the constant-temperature heat-conducting box 4. Heat-conducting fins 5 are equidistantly arranged on the back, top, bottom and both sides of the constant-temperature heat-conducting box 4. The heat-conducting fins 5 on the outer wall of the constant-temperature heat-conducting box 4 are perpendicular to the outer wall of the constant-temperature heat-conducting box 4 and parallel to the electric heating tubes 3 at the corresponding positions. The electric heating tubes 3 are embedded in the heat-conducting fins 5, and the distance between the heat-conducting fins 5 and the electric heating tubes 3 is equal. The heat-conducting fins 5 are used to fully absorb the heat of the electric heating tubes 3.

[0030] Heat-dissipating fins 6 are equidistantly arranged on the back, top, bottom and both sides of the inner wall of the constant-temperature heat-conducting box 4. The heat-dissipating fins 6 on the inner wall of the constant-temperature heat-conducting box 4 correspond to the heat-conducting fins 5 on the outer wall of the constant-temperature heat-conducting box 4 in position and are parallel to each other. The heat-dissipating fins 6 are used to uniformly transfer heat to the inside.

[0031] A support frame 7 is fixedly installed on the inner wall of the constant-temperature heat-conducting box 4. A plastic pipe rack 9 for placing pipes 8 is installed on the support frame 7. Placement grooves 901 for placing pipes 8 are equidistantly opened on the plastic pipe rack 9. Multiple groups of plastic pipe racks 9 are equidistantly arranged vertically inside the constant-temperature heat-conducting box 4.

[0032] Working principle: The heat-conducting fins 5 outside the constant-temperature heat-conducting box 4 are used to fully absorb the heat energy generated by the electric heating tubes 3, reducing energy consumption. The heat-dissipating fins 6 inside the constant-temperature heat-conducting box 4 are used to uniformly transfer heat to the inside, making the pipes 8 inside heat more evenly. The pipes 8 are placed through the plastic pipe rack 9 made of plastic. The heat conductivity of the plastic pipe rack 9 is similar to that of the pipes 8, which can avoid local overheating of the pipes 8 and damaging the local internal structure, and improve the accuracy of the high-temperature aging detection results of the pipes 8.

Claims

1. A high-temperature aging detection oven for pipe materials, comprising an oven main body (1), a box door (2) is installed on the front of the oven main body (1), and electric heating tubes (3) are equidistantly installed on the top, bottom, back and both sides of the inner cavity of the oven main body (1), and it is characterized in that: Inside the inner cavity of the oven main body (1), there is a detachable constant-temperature heat-conducting box (4) with an open front. The electric heating tube (3) is located outside the constant-temperature heat-conducting box (4). Heat-conducting fins (5) are equidistantly arranged on the back, top, bottom, and both sides of the constant-temperature heat-conducting box (4), and heat-dissipating fins (6) are equidistantly arranged on the back, top, bottom, and both sides of the inner wall of the constant-temperature heat-conducting box (4). A support frame (7) is fixedly installed on the inner wall of the constant-temperature heat-conducting box (4). A plastic pipe rack (9) for placing pipes (8) is installed on the support frame (7). Placement grooves (901) for placing pipes (8) are equidistantly opened on the plastic pipe rack (9).

2. The high-temperature aging detection oven for pipe materials according to claim 1, characterized in that: The electric heating tubes (3) on the top, bottom, and both sides of the inner cavity of the oven main body (1) are all perpendicular to the front of the oven main body (1). The electric heating tubes (3) on the back of the inner cavity of the oven main body (1) are installed in the horizontal or vertical direction.

3. The high-temperature aging detection oven for pipe materials according to claim 2, characterized in that: The heat-conducting fins (5) on the outer wall of the constant-temperature heat-conducting box (4) are perpendicular to the outer wall of the constant-temperature heat-conducting box (4) and parallel to the electric heating tubes (3) at the corresponding positions.

4. The high-temperature aging detection oven for pipe materials according to claim 3, characterized in that: The electric heating tubes (3) are embedded in the heat-conducting fins (5), and the distances between the heat-conducting fins (5) and the electric heating tubes (3) are equal.

5. The high-temperature aging detection oven for pipe materials according to claim 1, characterized in that: The heat-dissipating fins (6) on the inner wall of the constant-temperature heat-conducting box (4) correspond to the positions of the heat-conducting fins (5) on the outer wall of the constant-temperature heat-conducting box (4) and are parallel to each other.

6. The high-temperature aging detection oven for pipe materials according to claim 1, wherein: Multiple groups of the plastic pipe racks (9) are equidistantly arranged vertically inside the constant-temperature heat-conducting box (4).

7. The high-temperature aging detection oven for pipe materials according to claim 1, wherein: Guide rails (10) perpendicular to the front of the oven main body (1) are installed on both sides of the bottom of the inner cavity of the oven main body (1). The constant-temperature heat-conducting box (4) is slidably connected to the guide rails (10) through guide wheels (11).

8. The high-temperature aging detection oven for pipe materials according to claim 7, wherein: The front ends of the guide rails (10) are open and the rear ends are closed. A stop block (12) for blocking the forward sliding of the guide wheels (11) is placed at the position corresponding to the front ends of the guide rails (10) at the bottom of the inner cavity of the oven main body (1).

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