A device for visualizing the resistance to external pressure of a pipe at different temperatures

Abstract

The utility model discloses a device that visual measurement pipeline's resistance to external pressure performance under different temperature, including steel sleeve, sealing pressure plate, steel welded head, connecting pipe and constant temperature control device, steel sleeve one end is sealedly connected with sealing pressure plate, and the other end is sealedly welded with steel welded head, and the middle of sealing pressure plate is equipped with the connecting port, and the one end of connecting pipe passes through the connecting port, and the other end is connected with the inner chamber intercommunication of the pipe material of waiting for testing, and the lower portion of connecting port is equipped with the pressure port, one end of pipe material with sealing fixture is sealed, and the other end is sealed after connecting with connecting pipe, the middle and lower end of steel welded head are equipped with the opening, and the middle opening is equipped with temperature sensor, and the lower end opening is equipped with heating rod, and the middle part of steel sleeve is equipped with several imaging measurement probe. The utility model discloses device can accurate control temperature, and the actual use environment is simulated to the pipe material and carries out the external pressure test, and the deformation of pipe material under different pressure is measured accurately, makes the test result more close to the pipe material actual use situation.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline pressure testing, specifically relating to a device for visually measuring the external pressure resistance of pipelines at different temperatures. Background Technology

[0002] Plastic pipes have replaced metal pipes in various fields, and the requirements for pipe performance are becoming increasingly stringent. The external pressure resistance of a pipe represents the external pressure it can withstand during actual use. Because the external pressure resistance of a pipe is affected by the actual working environment, existing external pressure testing devices cannot simulate the actual application environment and operating temperature, nor can they intuitively reflect the changes in the pipe under simulated application scenarios. For example, patent number CN218036126U provides a device for testing the external pressure deformation of a pipe, and CN108318343A provides an experimental device for testing the external pressure crush resistance of a pipe. However, these testing devices can only test the external pressure data of the pipe under large deformation and cannot accurately view and simulate the deformation of the pipe under actual working conditions.

[0003] Existing external pressure testing equipment is not simple enough and is difficult to transport. The equipment itself can only test the external pressure performance of pipes at room temperature. If it is necessary to test at different temperatures, the entire external pressure testing equipment needs to be placed in different temperature environments for treatment. It is impossible to accurately control the temperature, and it is inconvenient to transport and has a high implementation cost.

[0004] In addition, existing external pressure testing devices cannot visually observe the changes in the appearance of pipes under different pressures; they cannot accurately measure the deformation of pipes under different temperatures and pressures. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a device for visually measuring the external pressure resistance of pipes at different temperatures. This device can precisely control the temperature, simulate the actual usage environment to conduct external pressure tests on the pipes, and accurately measure the deformation of the pipes under different pressures, making the test results more consistent with the actual usage of the pipes.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A device for visually measuring the external pressure resistance of pipelines at different temperatures includes a steel sleeve, a sealing plate, a steel welded end cap, a connecting pipe, a three-dimensional imaging measuring device, and a constant temperature control device. One end of the steel sleeve is sealed to the sealing plate via a fixing component, and the other end is welded to the steel welded end cap. A connection port is provided in the middle of the sealing plate. One end of the connecting pipe passes through the connection port, and the other end communicates with the inner cavity of the pipe to be tested. A pressure port is provided below the connection port. A support frame is provided inside the steel sleeve, and the pipe to be tested is placed on the support frame. One end of the pipe to be tested is sealed with a sealing clamp, and the other end is sealed after being connected to the connecting pipe. The steel welded end cap has openings in the middle and at the lower end. A temperature sensor is installed inside the middle opening, and a heating rod is installed inside the lower opening. Both the heating rod and the temperature sensor are connected to the constant temperature control device. Several imaging measuring probes are arranged around the middle of the steel sleeve, and the imaging measuring probes are connected to the three-dimensional imaging measuring device.

[0008] In a further technical solution, the device also includes a sleeve support frame, the steel sleeve is mounted on the sleeve support frame, and the sleeve support frame is equipped with height-adjustable pulleys.

[0009] In a further technical solution, the three-dimensional imaging measurement device and the constant temperature control device are mounted on the base plate of the sleeve support frame.

[0010] In a further technical solution, a sealing gasket is provided between the sealing pressure plate and the steel sleeve.

[0011] In a further technical solution, the fixing component is a component consisting of bolts and nuts.

[0012] In a further technical solution, the connecting pipe is installed through the connection port, allowing the inner cavity of the pipe to be tested to communicate with the atmosphere.

[0013] In a further technical solution, the inside of the steel sleeve is a test chamber, and the pressure port on the sealing plate is connected to the test chamber. The pressure port is used to connect an external pressure testing device.

[0014] A further technical solution involves providing a detachable threaded sealing port on the steel sleeve, through which different test liquids can be injected into the test chamber of the steel sleeve to simulate the actual usage environment of the pipe.

[0015] In a further technical solution, the number of imaging measurement probes is three, which are distributed at 120° intervals around the middle of the steel sleeve, for real-time recording and measurement of the appearance and dimensions of the pipe to be tested.

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

[0017] (1) It can accurately control the temperature, simulate the actual use environment to conduct external pressure test on the pipe, and accurately measure the deformation of the pipe under different pressures, so that the test results are more in line with the actual use of the pipe.

[0018] (2) It can intuitively view the appearance shape of the pipe under different temperatures and pressures, and determine the location of the pipe deformation by viewing the appearance shape.

[0019] (3) It can accurately measure the external pressure performance of pipes under different environments and temperatures; it can intuitively view the changes in the appearance and shape of pipes under different temperatures and pressures. The equipment is small in size and easy to transport. Attached Figure Description

[0020] Figure 1 This is a schematic diagram (cross-sectional view) of the device structure of this utility model.

[0021] Figure 2 This is an axial view of the device structure of this utility model - 1;

[0022] Figure 3 This is an axial view of the device structure of this utility model - 2;

[0023] In the diagram: 1. Three-dimensional imaging measurement device; 2. Sleeve support frame; 3. Fixing component; 4. Pressure port; 5. Connection port; 6. Connecting pipe; 7. Sealing pressure plate; 8. Sealing gasket; 9. Removable threaded sealing port; 10. Pipe to be tested; 11. Imaging measurement probe; 12. Steel sleeve; 13. Test chamber; 14. Support frame; 15. Sealing clamp; 16. Steel welded end cap; 17. Temperature sensor; 18. Heating rod; 19. Constant temperature control device; 20. Adjustable height pulley. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] like Figures 1-3 As shown, a device for visually measuring the external pressure resistance of a pipeline at different temperatures mainly includes a sleeve support frame 2, a steel sleeve 12, a sealing pressure plate 7, a sealing gasket 8, a steel welded end cap 16, a pipe support frame 14, a constant temperature control device 19, and a three-dimensional imaging measurement device 1.

[0026] The sleeve support frame 2 is equipped with height-adjustable pulleys 20 for easy movement and connection to pressurization equipment of different heights. The steel sleeve 12 is placed on the sleeve support frame 2 and fixedly connected by welding.

[0027] One end of the steel sleeve 12 is welded and sealed to the steel welded head 16, and the other end is sealed and connected to the sealing pressure plate 7 through the fixing component 3. A sealing gasket 8 is provided between the sealing pressure plate 7 and the steel sleeve 12. The fixing component 3 consists of bolts and nuts. The sealing pressure plate 7 has a connecting port 5 in the middle, which is connected to the inner cavity of the pipe to be tested 10 through the connecting pipe 6, so that the inner cavity of the pipe to be tested 10 is in communication with the atmosphere. The lower end of the sealing pressure plate 7 has a pressure port 4 that is connected to the test chamber 13 and connected to an external pressure testing device. A support frame 14 is provided inside the steel sleeve 12, and the pipe to be tested 10 is placed on the support frame 14. One end of the pipe to be tested 10 is sealed with a sealing clamp 15, and the other end is sealed after being connected to the connecting pipe 6. The steel welded end cap 16 has openings in the middle and at the lower end. A temperature sensor 17 is installed inside the middle opening, and a heating rod 18 is installed inside the lower opening. The heating rod 18, the temperature sensor 17, and the constant temperature control device 19 are connected. The temperature can be adjusted from room temperature to 150℃ with a fluctuation range of ±0.1℃, precisely controlling the temperature inside the steel sleeve 12. The upper end of the steel sleeve 12 is provided with a detachable threaded sealing port 9, through which different test liquids can be added to the test chamber 13 to simulate the actual use environment of the pipe.

[0028] Three imaging measurement probes 11 are arranged around the circumference of the steel sleeve 12. The imaging measurement probes 11 have the function of real-time monitoring and recording of the appearance of the pipe and measuring the actual size of the pipe. The three probes are distributed at 120° intervals and are connected to the three-dimensional imaging measurement device 1 to achieve real-time recording and measurement of the appearance and size of the pipe to be tested.

[0029] The device for visually measuring the external pressure resistance of pipelines at different temperatures, according to this invention, is assembled and used as follows:

[0030] Step 1: First, seal one end of the pipe 10 to be tested through the sealing clamp 15, and then seal the other end by connecting the connecting pipe 6. The pipe 10 to be tested is connected to the connecting port 5 on the sealing pressure plate 7 through the connecting pipe 6, and the inner cavity of the pipe is connected to the atmosphere through the connecting pipe 6.

[0031] Step 2: Place the pipe to be tested 10 on the inner support frame 14 of the steel sleeve 12. The sealing pressure plate 7 is sealed to the steel sleeve 12 through the fixing component 3. The pressure port 4 is connected to the pressure testing equipment.

[0032] Step 3: After the experimental setup is installed, water is injected into the test chamber 13 through the detachable threaded sealing port 9 on the steel sleeve 12. After filling with water, the chamber is resealed. The constant temperature control device 19 is turned on, and the test temperature is set. Then, the test chamber 13 and the pipe 10 to be tested are heated and kept at a constant temperature.

[0033] Step 4: After the test chamber 13 has reached a constant temperature, turn on the three-dimensional imaging measurement device 1 to continuously record and measure the appearance and actual size of the sample to be tested.

[0034] Step 5: After setting the test pressure on the pressure testing equipment, pressurize the test chamber 13. During the pressurization process, observe the real-time appearance and size data of the pipe recorded by the three-dimensional imaging measurement device 1. Stop pressurizing when a large deformation of the pipe is found.

[0035] Step 6: By comparing the pipe's appearance shape and size recorded by the three-dimensional imaging measurement device 1 with the pipe's initial appearance shape and size, the deformation amount, deformation location, and deformation process of the pipe under different pressures can be calculated.

[0036] Step 7: By comparing the amount of deformation and appearance of the pipe under different pressures, the external pressure resistance of the pipe can be determined intuitively.

[0037] It should be noted that the three-dimensional imaging measurement device and the constant temperature control device of this utility model are both existing known devices. Any device in the prior art that can realize the function of this application can be used in this application. Their working principle and structural composition are all existing conventional technologies, and will not be described in detail here.

[0038] Furthermore, it should be noted that all contact points between the pipes and holes involved in this utility model are sealed. For example, the contact points between the connecting pipe 6 and the connecting port, the temperature sensor, the contact points between the heating rod and the steel welded end cap, etc., can all be sealed.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for visually measuring the external pressure resistance of a pipeline at different temperatures, characterized in that, The device includes a steel sleeve (12), a sealing plate (7), a steel welded end cap (16), a connecting pipe (6), a three-dimensional imaging measuring device (1), and a constant temperature control device (19). One end of the steel sleeve (12) is sealed to the sealing plate (7) through a fixing component (3), and the other end is welded to the steel welded end cap (16). A connection port (5) is provided in the middle of the sealing plate (7). One end of the connecting pipe (6) passes through the connection port (5), and the other end communicates with the inner cavity of the pipe to be tested (10). A pressure port (4) is provided below the connection port (5). A support frame (14) is provided inside the steel sleeve (12). The test tube (10) is placed on the support frame (14); one end of the test tube (10) is sealed with a sealing clamp (15), and the other end is sealed after being connected to the connecting pipe (6); the steel welded end cap (16) has openings in the middle and at the lower end, a temperature sensor (17) is installed inside the middle opening, and a heating rod (18) is installed inside the lower opening. The heating rod (18) and the temperature sensor (17) are both connected to the constant temperature control device (19); several imaging measurement probes (11) are arranged around the middle of the steel sleeve (12), and the imaging measurement probes (11) are connected to the three-dimensional imaging measurement device (1).

2. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, It also includes a sleeve support frame (2), the steel sleeve (12) is mounted on the sleeve support frame (2), and the sleeve support frame (2) is equipped with adjustable height pulleys (20).

3. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 2, characterized in that, The three-dimensional imaging measurement device (1) and the constant temperature control device (19) are mounted on the base plate of the sleeve support frame (2).

4. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, A sealing gasket (8) is provided between the sealing pressure plate (7) and the steel sleeve (12).

5. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, The fixing component (3) is a component consisting of bolts and nuts.

6. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, The connecting pipe (6) is installed through the connecting port (5) so that the inner cavity of the pipe (10) to be tested is connected to the atmosphere.

7. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, The inside of the steel sleeve (12) is a test chamber (13), and the pressure port (4) on the sealing plate (7) is connected to the test chamber (13). The pressure port (4) is used to connect an external pressure device.

8. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 7, characterized in that, The steel sleeve (12) is provided with a detachable threaded sealing port (9) for adding different test liquids into the test chamber (13) of the steel sleeve (12) through the detachable threaded sealing port (9) to simulate the actual use environment of the pipe.

9. The device for visually measuring the external pressure resistance of a pipeline at different temperatures according to claim 1, characterized in that, The number of imaging measurement probes (11) is three, distributed at 120° intervals around the middle of the steel sleeve (12), for real-time recording and measurement of the appearance and dimensions of the pipe (10) to be tested.

Images