Plastic pipe pressure resistance detection device

Abstract

The utility model provides a plastic pipe pressure resistance detection device which comprises a constant-temperature water tank, a static pressure detector, a first plastic part and a second plastic part, the first plastic part and the second plastic part are connected to the two ends of a plastic pipe through hot melting or bonding, and the plastic pipe defines a closed space through the first plastic part and the second plastic part; a hanging rack is arranged in the constant-temperature water tank, a hook is arranged on the first plastic part, and the first plastic part is connected with the hanging rack through the hook; and the static pressure detector is connected with the inner cavity of the plastic pipe through a connecting pipe. The two ends of the plastic pipe are sealed through the plastic pieces to form the closed space, then the closed space is pressurized through the static pressure detector, the pressure resistance of the closed plastic pipe is detected, the plastic pieces are connected with the plastic pipe in a hot melting or bonding mode, the joint position of a pipeline can be simulated, and therefore the pressure resistance of the joint position is detected; meanwhile, the detection temperature of the plastic pipe is kept and adjusted through the constant-temperature water tank, and the pressure resistance of the plastic pipe at different temperatures can be detected.

Description

Technical Field

[0001] The present application relates to the technical field of plastic pipe quality testing equipment, and in particular to a plastic pipe pressure resistance testing device. Background Art

[0002] Plastic pipes such as PVC and PP are widely used in people's lives because of their characteristics such as not easy to rust and long service life. When supplying water, plastics need to withstand a certain water pressure. In order to ensure the pressure resistance of plastics, random pressure resistance inspections are required during the production of plastic pipes. The pressure resistance test of plastic pipes requires the use of special detection devices. For example, Chinese patent application number 202121904761.1 discloses a plastic pipe pressure resistance test device, including a base and two sliding rails arranged at the upper end thereof, each sliding rail having a sliding seat slidingly arranged therein, and the two sliding seats are connected to drive a displacement component to move closer or further away from each other, and a vertically arranged vertical plate is provided at the upper end of each sliding seat, and a rotating motor is installed on the outer side of the upper end of the vertical plate. During the test, the test device is connected to the pipeline through an expansion rubber ring to form a closed space, so as to apply pressure to the tested plastic pipe. However, the current plastic pipe test water pressure is above 0.8Mpa, and it is difficult to maintain the seal only by inflating the expansion rubber ring to expand and seal. Secondly, the current pipelines have a strong overall pressure-bearing capacity, and the main places prone to leakage are connection positions such as joints, and the equipment cannot detect the pressure resistance of such positions. At the same time, the device cannot simulate the pressure resistance under different water temperatures, which makes the test results more limited and cannot fully reflect the pressure resistance performance of plastic pipes. Utility Model Content

[0003] In order to solve the above problems, the present application proposes a plastic pipe pressure resistance detection device to solve the problem that the prior art cannot simulate the pressure resistance of plastic pipes and joints, and can detect the pressure resistance of plastic pipes under different water temperatures to improve the detection performance.

[0004] This application is implemented through the following technical solutions:

[0005] The present application proposes a plastic pipe pressure resistance testing device, comprising: a constant temperature water tank, a static pressure detector, a first plastic part, and a second plastic part, wherein the first plastic part and the second plastic part are hot-melt or bonded to the two ends of the plastic pipe, and the plastic pipe is surrounded by the first plastic part and the second plastic part to form a closed space; a hanging rack is provided in the constant temperature water tank, a hook is provided on the first plastic part, and the first plastic part is connected to the hanging rack through the hook; the static pressure detector is connected to the inner cavity of the plastic pipe through a connecting pipe.

[0006] Furthermore, the first plastic part is provided with a threaded portion and a hexagonal prism portion, the threaded portion is coaxially connected to the hexagonal prism portion, and the first plastic part is provided with a through hole, the inner cavity of the plastic tube is connected to the connecting tube through the through hole, the connecting tube is provided with a connecting head, the connecting head is connected to the threaded portion through a thread, and a sealing rubber ring is provided between the connecting head and the threaded portion.

[0007] Furthermore, the second plastic part is a cover, and the second plastic part is used to seal one end of the plastic tube.

[0008] Furthermore, the first plastic part and the second plastic part are both provided with a connecting portion, the inner diameter of the connecting portion is 0 mm to 1 mm smaller than the outer diameter of the plastic tube, and the connecting portion is used to be connected to the plastic tube.

[0009] Furthermore, the material of the first plastic part and the second plastic part is the same as the material of the plastic tube.

[0010] Furthermore, a circulating pump and an electric heater are provided outside the constant temperature water tank, the water inlet of the circulating pump is connected to the lower part of the constant temperature water tank, and the water outlet of the circulating pump is connected to the upper part of the constant temperature water tank through the electric heater.

[0011] The beneficial effects of the present application are as follows: by using plastic parts to seal both ends of a plastic pipe to form an enclosed space, and then pressurizing the enclosed space with a static pressure detector, the pressure resistance of the enclosed plastic pipe can be detected; the plastic parts are connected to the plastic pipe by hot melting or bonding, which can simulate the joint position of the pipe, thereby detecting the pressure resistance of the joint position; at the same time, the detection temperature of the plastic pipe is maintained and adjusted by a constant temperature water tank, so that the pressure resistance of the plastic pipe at different temperatures can be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model hanger;

[0014] Figure 3 It is a schematic diagram of the connection between the plastic part and the plastic pipe;

[0015] Figure 4 This is a schematic diagram of the structure of the first plastic part of the utility model;

[0016] In the figure: 1-constant temperature water tank, 2-static pressure detector, 3-first plastic part, 4-second plastic part, 5-plastic pipe, 6-hanging rack, 7-hook, 8-connecting pipe, 9-threaded part, 10-hexagonal prism part, 11-connecting head, 12-connecting part, 13-circulating pump, 14-electric heater. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0020] like Figures 1 to 4 As shown, an embodiment of the utility model provides a plastic pipe pressure resistance detection device, including: a constant temperature water tank 1, a static pressure detector 2, a first plastic part 3, and a second plastic part 4. The first plastic part 3 and the second plastic part 4 are hot-melt or bonded to the two ends of a plastic pipe 5, and the plastic pipe 5 is surrounded by the first plastic part 3 and the second plastic part 4 to form a closed space; a hanger 6 is provided in the constant temperature water tank 1, a hook 7 is provided on the first plastic part 3, and the first plastic part 3 is connected to the hanger 6 through the hook 7; the static pressure detector 2 is connected to the inner cavity of the plastic pipe 5 through a connecting pipe 8.

[0021] The first plastic part 3 and the second plastic part 4 are produced by injection molding. For the plastic tube made of PP material, the plastic part is connected to the plastic tube 5 by hot melting process. For the plastic tube made of PVC material, the plastic part is connected to the plastic tube 5 by glue bonding. The first plastic part 3 and the second plastic part 4 are used to seal the two ends of the plastic tube 5 so that the inner cavity of the plastic tube 5 forms a closed space. Then, water with the same temperature as that in the thermostatic water tank 1 is poured into the plastic tube 5. Then, the first plastic part 3 is screwed on the connector 11 so that the first plastic part 3 is connected to the static pressure detector 2. After the connection is tight, put the plastic tube 5 into the constant temperature water tank 1, and hook the first plastic part 3 on the hanger 6 to keep the plastic tube 5 stable. After the plastic tube 5 is soaked in the constant temperature water tank 1 for 1-2 hours, start the static pressure detector 2, generate hydrostatic pressure through the static pressure detector 2, and continue to pressurize the plastic tube 5. After reaching the set pressure, maintain it for a period of time, and detect the pressure change through the pressure sensor in the static pressure detector 2. If the pressure does not change after a period of time, it means that there is no leakage in the plastic tube 5 and the interface of the plastic tube 5, and the pressure resistance performance is qualified.

[0022] The static pressure detector 2 adopts an existing static pressure detector, which generates high pressure by hydraulic means and acts on the inner cavity of the plastic pipe 5 to detect the pressure resistance of the plastic pipe 5 .

[0023] The first plastic part 3 is hooked on the bracket 6, which can keep the plastic tube 5 stable during detection, and can prevent the connecting tube 8 from swinging when the plastic tube 5 bursts, thereby protecting the safety of equipment and personnel.

[0024] Specifically, a threaded portion 9 and a hexagonal prism portion 10 are provided on the first plastic part 3. The threaded portion 9 is convenient for connection with the connecting head 11, and the hexagonal prism portion 10 is convenient for the inspector to tighten it with a wrench. The threaded portion 9 is coaxially connected with the hexagonal prism portion 10, and a through hole is provided on the first plastic part 3. The inner cavity of the plastic tube 5 is connected to the connecting tube 8 through the through hole. The connecting tube 8 is provided with a connecting head 11, which is connected to the threaded portion 9 through a thread, and a sealing rubber ring is provided between the connecting head 11 and the threaded portion 9, which is connected to the connecting head 11 through the first plastic part 3, so that the inner cavity of the plastic tube 5 is connected to the static pressure detector 2, so that the static pressure detector 2 can generate high pressure in the plastic tube 5.

[0025] Preferably, the second plastic member 4 is a cover, and the second plastic member 4 is used to seal one end of the plastic tube 5 , so as to form a closed space inside the plastic tube 5 .

[0026] Preferably, the first plastic part 3 and the second plastic part 4 are both provided with a connecting portion 12, and the inner diameter of the connecting portion 12 is 0 mm to 1 mm smaller than the outer diameter of the plastic tube 5. The connecting portion 12 is used to connect to the plastic tube 5. When connecting using a bonding process, the inner diameter of the connecting portion 12 is the same as the outer diameter of the plastic tube 5 so as to increase the bonding area of ​​the glue. When connecting using a hot melt process, the inner diameter of the connecting portion 12 is 1 mm smaller than the outer diameter of the plastic tube 5 so that the molten resin can adhere to each other after hot melting.

[0027] Preferably, the material of the first plastic part 3 and the second plastic part 4 is the same as that of the plastic pipe 5. In a real usage environment, the material of pipe fittings such as tees and elbows is also the same as that of the plastic pipe 5. Therefore, the first plastic part 3 and the second plastic part 4 can simulate a real pipe joint to facilitate the detection of the pressure resistance of the plastic pipe joint.

[0028] Preferably, a circulating pump 13 and an electric heater 14 are provided on the outside of the constant temperature water tank 1, the water inlet of the circulating pump 13 is connected to the lower part of the constant temperature water tank 1, and the water outlet of the circulating pump 13 is connected to the upper part of the constant temperature water tank 1 through the electric heater 14. The circulating pump 13 allows the water in the constant temperature water tank 1 to circulate through the electric heater 14, thereby heating the water in the entire constant temperature water tank 1 through the electric heater 14, so as to facilitate the pressure resistance of the plastic pipe 5 at the detection temperature.

[0029] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. A plastic pipe pressure resistance detection device, characterized in that: include: A constant temperature water tank (1), a static pressure detector (2), a first plastic part (3), and a second plastic part (4); the first plastic part (3) and the second plastic part (4) are connected to two ends of a plastic tube (5) by hot melting or bonding; the plastic tube (5) is surrounded by the first plastic part (3) and the second plastic part (4) to form a closed space; a hanging rack (6) is provided in the constant temperature water tank (1); a hook (7) is provided on the first plastic part (3); the first plastic part (3) is connected to the hanging rack (6) by the hook (7); and the static pressure detector (2) is connected to the inner cavity of the plastic tube (5) by a connecting pipe (8).

2. A plastic pipe pressure resistance detection device according to claim 1, characterized in that: The first plastic part (3) is provided with a threaded portion (9) and a hexagonal prism portion (10), the threaded portion (9) and the hexagonal prism portion (10) are coaxially connected, and the first plastic part (3) is provided with a through hole, the inner cavity of the plastic tube (5) is connected to the connecting tube (8) through the through hole, and the connecting tube (8) is provided with a connecting head (11), the connecting head (11) is connected to the threaded portion (9) through a thread, and a sealing rubber ring is provided between the connecting head (11) and the threaded portion (9).

3. A plastic pipe pressure resistance detection device according to claim 2, characterized in that: The second plastic part (4) is a cover body, and the second plastic part (4) is used to seal one end of the plastic tube (5).

4. A plastic pipe pressure resistance detection device according to claim 3, characterized in that: The first plastic part (3) and the second plastic part (4) are both provided with a connecting portion (12), the inner diameter of the connecting portion (12) being 0 mm to 1 mm smaller than the outer diameter of the plastic tube (5), and the connecting portion (12) being used for connecting to the plastic tube (5).

5. A plastic pipe pressure resistance detection device according to claim 3, characterized in that: The material of the first plastic part (3) and the second plastic part (4) is the same as the material of the plastic tube (5).

6. A plastic pipe pressure resistance detection device according to claim 1, characterized in that: A circulating pump (13) and an electric heater (14) are provided on the outside of the constant temperature water tank (1); a water inlet of the circulating pump (13) is connected to the lower part of the constant temperature water tank (1); and a water outlet of the circulating pump (13) is connected to the upper part of the constant temperature water tank (1) via the electric heater (14).

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