Device for testing heat resistance of polyethylene pipe

Abstract

The utility model discloses a heat resistance testing device for a polyethylene pipe. The polyethylene pipe heat resistance testing device comprises a heating mechanism and a supporting mechanism, the supporting mechanism is installed at the lower end of the heating mechanism, the supporting mechanism comprises a support, the heating mechanism comprises a hot air box, the hot air box is installed on the support, the support is further provided with a heating assembly, the heating assembly comprises an outer box, and the outer box is connected with the supporting mechanism. A metal pipe is arranged in the outer box, an electric heating wire is wound on the periphery of the metal pipe, an air blower is arranged at one end of the metal pipe, the other end of the metal pipe is connected with a first air pipe, the other end of the first air pipe is located in the hot air box, and a fixing mechanism is arranged at a pipe opening of the first air pipe. The polyethylene pipe heat resistance testing device provided by the utility model can detect the change of the state of the inside of the polyethylene pipe influenced by heat flow, and is more suitable for the actual heating condition of the polyethylene pipe during working, and the detection mode is more persuasive.

Description

TECHNICAL FIELD

[0001] The utility model relates to polyethylene pipe detection technical field especially relates to a polyethylene pipe heat resistance testing arrangement. BACKGROUND

[0002] In many application scenarios, polyethylene pipes will contact high-temperature medium. If the heat resistance of the pipe material is insufficient, the pipe material may deform or break when conveying hot water, hot steam or being used in a high-temperature environment, resulting in medium leakage. For example, if a polyethylene pipe breaks due to poor heat resistance in a heating system, hot water leakage will not only damage the internal facilities of the building but also may scald the user, causing personal injury. Through strict heat resistance testing, heat resistance defects of the pipe material can be found in advance to avoid such safety accidents.

[0003] The prior art discloses a kind of heat resistance testing device of polyethylene pipe material, including testing device body and exhaust fan, the inside of the testing device body is integrally provided with support plate, and the inside of support plate is provided with positioning groove, the inside of positioning groove is tightly combined with positioning rod, and the outer side of positioning rod is welded with limit board, and the outer side of limit board is fixed with non-slip mat, the upper end of positioning rod is integrally provided with support frame, the inside of the testing device body is installed with electric telescopic rod above, and the left end of electric telescopic rod is fixed with baffle.The heat resistance testing device of the polyethylene pipe material can effectively support pipe material, ensure that pipe material is heated evenly, avoid bottom closure, and can be suitable for pipe material of different sizes, and the hot gas in the testing device can be quickly dissipated, subsequent operation is facilitated, and dust can be effectively prevented from entering the inside of testing device body.

[0004] The above device tests by placing the whole polyethylene pipe into the device for heating, and the inside and outside of the polyethylene pipe are heated at the same time, which deviates from the heating form of the polyethylene pipe in actual working state (single external heating or internal heating), and the experimental results are not persuasive.

[0005] Therefore, it is necessary to provide a polyethylene pipe heat resistance testing device to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a polyethylene pipe heat resistance testing device which can better simulate the heating form of the polyethylene pipe in actual working state during experiment.

[0007] To achieve the above purpose, the utility model adopts the following technical solutions:

[0008] Polyethylene pipe heat resistance testing device, including: heating mechanism to support mechanism, the support mechanism is installed in the heating mechanism lower end, the support mechanism includes a bracket, the heating mechanism includes a hot air box, the hot air box is installed on the bracket, the bracket is also provided with a heating assembly, the heating assembly includes an outer box, a metal pipe is arranged in the outer box, the metal pipe is surrounded by an electric heating wire, one end of the metal pipe is provided with a blower, the other end of the metal pipe is connected with a first air pipe, the other end of the first air pipe is located in the hot air box and is provided with a fixing mechanism at the pipe opening, and the fixing mechanism comprises a mounting sleeve, one end of the sleeve is provided with a clamping opening.

[0009] Preferably, a valve is arranged on the first air pipe, a second air pipe is communicated with the first air pipe between the valve and the heating assembly, a valve is also arranged on the second air pipe, and the upper end of the second air pipe is connected into the hot air box.

[0010] Preferably, a buffer net is fixedly arranged on the inner wall of the hot air box, a plurality of through holes are formed in the surface of the buffer net, and a baffle is further arranged on the buffer net and located directly above the second air pipe.

[0011] Preferably, a hot air box door is arranged on one side of the hot air box, the upper end of the hot air box is provided with an opening, and a dustproof net is detachably arranged at the opening.

[0012] Preferably, an exhaust pipe is arranged in the hot air box and corresponds to the first air pipe, a sliding pipe is slidably arranged on the sleeve, a clamping opening is arranged at the end of the sliding pipe, springs are arranged between the sliding pipe and the sleeve, and the end of the exhaust pipe is provided with the same structure as the end of the first air pipe.

[0013] Preferably, the opening of the clamping opening is in a stepped shape.

[0014] Compared with the prior art, the polyethylene pipe heat resistance testing device has the following beneficial effects:

[0015] (1) The heating assembly is arranged to provide the effect of hot air flow for the device, and the heat resistance of the internal heat flow of the polyethylene pipe is detected as the temperature of the hot air flow continuously rises.

[0016] (2) The second air pipe is arranged to realize the effect that the hot air flow enters the hot air box and heats the outer wall of the polyethylene pipe, and the effect that the outer wall of the second air pipe is heated and the heat resistance is detected.

[0017] (3)The utility model discloses a baffle and other related components are arranged to realize the dispersion effect of the concentrated hot air flow in the second air pipe, and the hot air flow enters the hot air box in a more uniform and low-speed mode, thereby more uniformly flowing through the surface of the polyethylene pipe, and finally being discharged from the upper opening of the hot air box. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like.

[0019] Figure 2 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like.

[0020] Figure 3 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like.

[0021] Figure 4 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like.

[0022] Figure 5 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like. Figure 3 The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like.

[0023] The polyethylene pipe heat resistance testing device provided by the utility model has the advantages of simple structure, convenient use and the like. DETAILED DESCRIPTION

[0024] The utility model will be further explained in connection with the drawings and the embodiments, and the mode of the utility model includes but is not limited to the following embodiments.

[0025] First embodiment:

[0026] As shown in the drawings, the polyethylene pipe heat resistance testing device provided by the utility model comprises a heating mechanism 100 and a supporting mechanism 300. Figures 1-4 The polyethylene pipe heat resistance testing device provided by the utility model comprises a heating mechanism 100 and a supporting mechanism 300. Figure 1As shown in the figure, four universal wheels 302 are installed at the lower end of the support 301 to facilitate the movement of the device. The heating mechanism 100 comprises a hot air box 101, which is hollow inside and has an opening at the upper end. The hot air box 101 is installed on the support 301. The support 301 is also provided with a heating assembly 103, as shown in Figure 4 The heating assembly 103 specifically comprises an outer box 105, which is a rectangular shell structure sealed on all sides. Inside the outer box 105 is a metal pipe 106, around which is wound an electric heating wire 107. One end of the metal pipe 106 is provided with a blower 104. The blower 104 sucks external air into the metal pipe 106. The electric heating wire 107 heats the metal pipe 106, which in turn conducts heat to the air inside the pipe, thereby heating the air flowing through the metal pipe 106 to obtain hot air. The other end of the metal pipe 106 is connected to a first air pipe 102, the other end of which is connected to the hot air box 101. A fixing mechanism 200 is provided at the opening of the first air pipe 102 inside the hot air box 101, as shown in Figure 3 、 Figure 5 The fixing mechanism 200 comprises a mounting sleeve 201, one end of which is provided with a clamping opening 204. The sleeve 201 is fixedly installed at the opening of the first air pipe 102, and the clamping opening 204 is fixed to the inner wall of the sleeve 201. Similarly, a sleeve 201 is also provided at the corresponding position on the other side of the inner wall of the hot air box 101, which penetrates from the inner wall to the outer wall of the hot air box 101. The sleeve 201 is also provided with a clamping opening 204, which serves to fix the polyethylene pipe. In use, the prepared polyethylene pipe is first installed between the two clamping openings 204 through the upper end opening of the hot air box 101. The clamping opening 204 is cylindrical in shape, and its inner diameter is the same as the outer diameter of the polyethylene pipe to be measured. During installation, the polyethylene pipe is first bent, and the distance between the two ends of the polyethylene pipe is smaller than the straight line distance. Then, the two ends of the polyethylene pipe are aligned with the two clamping openings 204. After the polyethylene pipe is loosened, it returns to a straight line shape, and the two ends enter the clamping openings 204. At this point, the polyethylene pipe is installed and fixed on the clamping openings 204. Then, the heating assembly 103 is started. The external air is heated by the heating assembly 103 to form a hot air flow. The hot air flow flows through the first air pipe 102 and enters the polyethylene pipe, and finally exits the device through the other end of the polyethylene pipe.

[0027] The heating assembly 103 provides a hot air flow effect for the device. As the temperature of the hot air flow continues to rise, the heat resistance of the polyethylene pipe is detected. Compared with the existing method of directly heating the entire polyethylene pipe, the change in the state of the polyethylene pipe affected by the heat flow is more realistic and convincing.

[0028] Second embodiment:

[0029] As shown in Figures 1-3As shown, the first air pipe 102 is provided with a valve 109, and the second air pipe 108 is communicated with the first air pipe 102 between the valve 109 and the heating assembly 103. The second air pipe 108 is also provided with a valve 109, and the upper end of the second air pipe 108 is connected into the hot air box 101. After the heating assembly 103 generates hot air flow, the valve 109 on the first air pipe 102 is closed, and the valve 109 on the second air pipe 108 is opened. Then, the hot air flow flows into the hot air box 101 from the second air pipe 108, and the hot air flow in the hot air box 101 heats the polyethylene pipe installed on the fixing mechanism 200. Finally, the hot air flow is discharged from the opening at the upper end of the hot air box 101.

[0030] The second air pipe 108 is provided to realize the effect that the hot air flow enters the hot air box 101 and heats the outer wall of the polyethylene pipe, and further realize the effect that the outer wall of the second air pipe 108 is heated to detect the heat resistance thereof.

[0031] Third embodiment:

[0032] As shown, Figure 3 The inner wall of the hot air box 101 is fixedly installed with a buffer net 110, the surface of the buffer net 110 has a plurality of through holes, and the buffer net 110 is further provided with a baffle 111. The baffle 111 is located directly above the second air pipe 108, is in the form of a sheet, and has a smooth surface without through holes. When the hot air flow is sprayed from the second air pipe 108, the hot air flow moves upward and is blocked by the baffle 111, is dispersed in a radial manner to the surrounding, and finally enters the hot air box 101 through the through holes on the surface of the buffer net 110.

[0033] The baffle 111 and other related components are provided to realize the effect that the concentrated hot air flow in the second air pipe 108 is dispersed. The hot air flow enters the hot air box 101 in a more uniform and low-speed manner, and then flows more uniformly over the surface of the polyethylene pipe, and finally is discharged from the opening at the upper end of the hot air box 101.

[0034] Fourth embodiment:

[0035] As shown, Figure 1 The hot air box 101 is provided with an air box door 112 at one side, and the upper end of the hot air box 101 is provided with an opening. A ring of soft magnetic sheets is arranged at the opening, and a ring of soft magnetic sheets is also arranged at the lower surface of the dust screen 113 in a position opposite to the ring of soft magnetic sheets. The soft magnetic sheets of the two rings attract each other. When the air box door 112 is opened, the inside of the hot air box 101 is opened, so that the staff can install the polyethylene pipe in the hot air box 101. The dust screen 113 is a thin metal screen, and a plurality of small holes are arranged on the surface of the dust screen 113 to prevent large particles of sundries from entering the inside of the hot air box 101.

[0036] Fifth embodiment:

[0037] As shown, Figure 3 , Figure 5As shown, the exhaust pipe 114 is arranged in the hot air box 101 corresponding to the first air pipe 102, the exhaust pipe 114 penetrates the outer wall of the hot air box 101, the end is located in the hot air box 101, the other end is opened vertically downward, the sleeve 201 is slidably installed with a sliding pipe 202, the end of the sliding pipe 202 is provided with a clamping opening 204, the spring 203 is arranged between the sliding pipe 202 and the sleeve 201, the structure of the end of the exhaust pipe 114 in the hot air box 101 is the same as that of the end of the first air pipe 102, when the polyethylene pipe is installed, the sliding pipes 202 on both sides are pushed, the clamping opening 204 at the end of the sliding pipe 202 moves together with the sliding pipe 202, in this process, the spring 203 is compressed, the distance between the openings of the two clamping openings 204 is increased, the two ends of the polyethylene pipe are aligned with the ends of the clamping openings 204, and finally the sliding pipe 202 is released, the spring 203 is reset, the two clamping openings 204 are close to each other, and finally the polyethylene pipe is clamped between the two clamping openings 204, in order to improve the applicability of the clamping opening 204, the opening of the clamping opening 204 is stepped, that is, the connection between the clamping opening 204 and the polyethylene pipe is provided with a plurality of openings with different inner diameters, which is stepped.

[0038] By arranging the sliding pipe 202 and other related components, the polyethylene pipe of different lengths can be installed and fixed, and compared with the mode in the first embodiment, the mode of installing the polyethylene pipe is more convenient.

[0039] Working principle: the heating assembly 103 generates hot air flow, the hot air flow flows through the inside or outside of the polyethylene pipe, which is more in line with the actual heating condition of the polyethylene pipe during work, so that the detection result is more convincing.

[0040] The above embodiment is only one of the preferred embodiments of the present application, and should not be used to limit the protection scope of the present application, but any modification or polishing without substantial meaning made on the main design idea and spirit of the present application, the technical problems solved are still consistent with the present application, and should be included in the protection scope of the present application.

Claims

1. A polyethylene pipe heat resistance testing apparatus characterized by, Including: Heating mechanism (100) to support mechanism (300), the support mechanism (300) is installed in heating mechanism (100) lower end, the support mechanism (300) includes support (301), the heating mechanism (100) includes hot air box (101), the hot air box (101) is installed on support (301), the support (301) is also provided with heating assembly (103), the heating assembly (103) includes outer box (105), the outer box (105) is provided with a metal pipe (106), the metal pipe (106) periphery is wound with electric heating wire (107), the metal pipe (106) one end is provided with air blower (104), the metal pipe (106) other end is connected first air pipe (102), the first air pipe (102) other end is located in hot air box (101) and is provided with fixed mechanism (200) at pipe orifice, the fixed mechanism (200) includes installation sleeve (201), the sleeve (201) one end is provided with clamping opening (204).

2. The polyethylene pipe heat resistance testing apparatus according to claim 1, wherein, The first air pipe (102) is provided with valve (109), the second air pipe (108) is communicated on the first air pipe (102) between the valve (109) and heating assembly (103), the second air pipe (108) is also provided with valve (109), and the second air pipe (108) upper end is accessed into hot air box (101).

3. The polyethylene pipe heat resistance test apparatus according to claim 2, wherein, The inner wall of the hot air box (101) is fixedly installed with a buffer net (110), the buffer net (110) has a plurality of through holes on the surface, and the buffer net (110) is also provided with a baffle (111), and the baffle (111) is located directly above the second air pipe (108).

4. The polyethylene pipe heat resistance testing apparatus according to claim 1, wherein, The hot air box (101) is provided with an air box door (112) on one side, and the hot air box (101) is provided with a dust screen (113) on the opening.

5. The polyethylene pipe heat resistance testing apparatus according to claim 1 or 3, characterized by, The hot air box (101) is provided with an exhaust pipe (114) corresponding to the first air pipe (102), the sleeve (201) is slidably installed with a sliding pipe (202), the sliding pipe (202) is provided with a clamping opening (204) at the end, and the sliding pipe (202) and the sleeve (201) are provided with a spring (203), and the structure of the end of the exhaust pipe (114) is same with the end structure of the first air pipe (102).

6. The polyethylene pipe heat resistance test apparatus according to claim 5, wherein, The clamping opening (204) is stepped.

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