Flexible plastic pipeline oxygen resistance comparison test evaluation platform

Abstract

The utility model discloses a flexible plastic pipeline oxygen resistance comparison test evaluation platform, which comprises a vacuum degassing deaerator, a copper water segregator, a copper water collector, an oxygen bottle and a group of test barrels, a water outlet of the vacuum degassing deaerator is connected with a water inlet of the copper water segregator through a steel pipe, each water outlet of the copper water segregator is divided into two paths, according to the first path, a water outlet of the copper water segregator is connected with a water return port of the testing barrel through a pipeline, a water outlet of the testing barrel is connected with a water inlet of the copper water collector through a pipeline, and a water outlet in the side portion of the copper water collector is connected with a water return port in the side portion of the vacuum degassing and deoxidizing machine through a pipeline. Circulation is carried out in an oxygen-enriched environment in the test barrel, the content of oxygen in the pipeline is detected through the online dissolved oxygen meter, and if data detected and displayed by the dissolved oxygen meter is small, the oxygen content of the detected pipeline is low, and the oxygen blocking effect of the pipeline is good; if the data detected and displayed by the dissolved oxygen meter is large, the oxygen content of the detected pipeline is high, and the oxygen blocking effect of the pipeline is poor.

Description

Technical Field

[0001] This utility model belongs to the field of underfloor heating systems, specifically relating to a comparative testing and evaluation platform for oxygen barrier properties of flexible plastic pipes. Background Technology

[0002] As people's living standards improve, residents are demanding higher levels of indoor comfort. Underfloor heating is a comfortable heating method widely used in some cities in northern and southern China. Underfloor heating systems primarily use interconnected pipes, with connections often made of metal. Over time, oxidation can cause corrosion and aging of these materials, significantly impacting the heat transfer efficiency of the system.

[0003] Therefore, this utility model proposes a comparative testing and evaluation platform for oxygen barrier properties of flexible plastic pipes. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model proposes a flexible plastic pipe oxygen barrier comparative test and evaluation platform, which can conduct comparative tests on multiple groups of tested pipes and evaluate the quality of their respective oxygen barrier effects.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A flexible plastic pipe oxygen barrier comparative testing and evaluation platform includes a vacuum deaerator, a copper water distributor, a copper water collector, an oxygen cylinder, and a set of test tanks. The outlet of the vacuum deaerator is connected to the inlet of the copper water distributor via a steel pipe. Each outlet of the copper water distributor is divided into two paths. The first path is as follows: the outlet of the copper water distributor is connected to the return outlet of the test tank via a pipeline; the outlet of the test tank is connected to the inlet of the copper water collector via a pipeline; and the side outlet of the copper water collector is connected to the side return outlet of the vacuum deaerator via a pipeline.

[0007] Furthermore, including a circulating pump and an online dissolved oxygen meter, the second outlet of the copper water distributor is as follows: the outlet of the copper water distributor is connected to the inlet of the circulating pump through a pipeline, the outlet of the circulating pump is connected to the inlet of the online dissolved oxygen meter through a pipeline, and the outlet of the online dissolved oxygen meter is connected to the inlet of the copper water collector through a pipeline.

[0008] Furthermore, the test barrel includes a barrel body, a sealed barrel cover is provided on the barrel body, an oxygen concentration tester and an exhaust valve are installed on the upper surface of the sealed barrel cover, a core is provided inside the barrel body, and an air inlet is provided on the side of the barrel body near the bottom.

[0009] Furthermore, the air inlet of the barrel is connected to the oxygen cylinder via an oxygen delivery pipe, which is equipped with an air valve.

[0010] Furthermore, each outlet of the copper water distributor is equipped with a copper ball valve at the intersection of the two branches.

[0011] Furthermore, the vacuum degassing and deaerator is provided with a water inlet on its side, and a water supply pipe is installed at the water inlet, with a water supply shut-off valve on the water supply pipe.

[0012] Furthermore, each outlet of the copper water distributor is equipped with a water distributor valve, and each inlet of the copper water collector is equipped with a water collector valve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1) The experimental platform of this utility model can generate oxygen-free water, which is introduced into the test pipeline and circulated in the oxygen-rich environment in the test tank. The oxygen content in the pipeline is detected by an online dissolved oxygen meter. If the data displayed by the dissolved oxygen meter is small, the oxygen content of the tested pipeline is low and the oxygen barrier effect of the pipeline is good; if the data displayed by the dissolved oxygen meter is large, the oxygen content of the tested pipeline is high and the oxygen barrier effect of the pipeline is poor.

[0015] 2) The large circulation platform of this utility model uses oxygen-free water produced by the vacuum deaerator to be transported to each test group through copper pipes and copper water distributors. Then it is collected by the water collector and circulated back to the vacuum deaerator. At the same time, in order to ensure that the system is full of oxygen-free water, the vacuum deaerator is also equipped with a water supply pipe to transport industrial distilled water from the outside.

[0016] 3) This invention features a separate small-circulation system for each test group. Each test group consists of a circulation pump, an online dissolved oxygen meter, and a test tank. Once the entire large circulation system is filled with deoxygenated water, the external valve is closed, and the small-circulation system for each test group begins. The online dissolved oxygen meter is used to periodically record changes in the oxygen content of the small-circulation system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the platform of this utility model;

[0018] Figure 2 This is a cross-sectional view of the test barrel of this utility model;

[0019] Figure 3 This is a diagram showing the installation of the test pipeline for this utility model.

[0020] Figure 4 This is a diagram illustrating the application of the platform for the production of oxygen-free water in this utility model.

[0021] Figure 5 This is a partial view of the platform of this utility model. Figure 1 ;

[0022] Figure 6 This is a partial view of the platform of this utility model. Figure 2.

[0023] In the diagram: 1. Vacuum deaerator; 2. Copper water distributor; 3. Copper water collector; 4. Oxygen cylinder; 5. Test tank; 6. Circulation pump; 7. Online dissolved oxygen meter; 8. Tank body; 9. Sealed tank lid; 10. Oxygen concentration meter; 11. Exhaust valve; 12. Roller core; 13. Air inlet; 14. Oxygen delivery pipeline; 15. Gas valve; 16. Copper ball valve; 17. Water inlet; 18. Water inlet shut-off valve; 19. Water distributor valve; 20. Water collector valve; 21. Pipeline to be tested. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the scope described herein.

[0025] Please refer to Figure 1 A flexible plastic pipe oxygen barrier comparative test and evaluation platform includes a vacuum deaerator 1, a copper water distributor 2, a copper water collector 3, an oxygen cylinder 4, and a set of test tanks 5. The outlet of the vacuum deaerator 1 is connected to the inlet of the copper water distributor 2 via a steel pipe. Each outlet of the copper water distributor 2 is divided into two paths. The first path is as follows: the outlet of the copper water distributor 2 is connected to the return water outlet of the test tank 5 via a pipeline; the outlet of the test tank 5 is connected to the inlet of the copper water collector 3 via a pipeline; and the side outlet of the copper water collector 3 is connected to the side return water outlet of the vacuum deaerator 1 via a pipeline.

[0026] Please refer to Figure 5 The platform of this utility model includes a circulating pump 6 and an online dissolved oxygen meter 7. The second outlet of the copper water distributor 2 is connected to the inlet of the circulating pump 6 through a pipeline, the outlet of the circulating pump 6 is connected to the inlet of the online dissolved oxygen meter 7 through a pipeline, and the outlet of the online dissolved oxygen meter 7 is connected to the inlet of the copper water collector 3 through a pipeline.

[0027] The large-scale circulation system of this invention uses a platform to produce oxygen-free water through a vacuum deaerator 1. This water is then transported to various test groups via copper pipes and a copper water distributor 2. It is then collected by a copper water collector 3 and circulated back to the vacuum deaerator 1. In order to ensure that the system is full of oxygen-free water, the vacuum deaerator 1 is also equipped with a water supply pipe to supply industrial distilled water from the outside.

[0028] Please refer to Figure 2 The test barrel 5 includes a barrel body 8, a sealed barrel cover 9 on the barrel body 8, an oxygen concentration tester 10 and an exhaust valve 11 installed on the upper surface of the sealed barrel cover 9, a core 12 inside the barrel body 8, and an air inlet 13 on the side of the barrel body 8 near the bottom.

[0029] Please refer to Figure 3 Wrap the pipe to be tested around the core 12, then insert it into the barrel 8, and cover it with the sealing barrel lid 9.

[0030] Please refer to Figure 6 The air inlet 13 of the barrel 8 is connected to the oxygen cylinder 4 through the oxygen delivery pipe 14, and the oxygen delivery pipe 14 is equipped with an air valve 15.

[0031] The copper manifold 2 has a copper ball valve 16 at the junction of the two branches at each outlet. The copper manifold 2 has a manifold valve 19 at each outlet, and the copper collector 3 has a collector valve 20 at each inlet.

[0032] The vacuum deaerator 1 has a water inlet 17 on its side, and a water supply pipe is installed at the water inlet 17. The water supply pipe is equipped with a water supply shut-off valve 18.

[0033] Please refer to Figure 4 Test pipe installation: Open the sealed lid 9 of the test bucket 5, take out the core 12, wrap the flexible pipe to be tested around the core 12, put it into the test bucket 5, and then connect one end of the pipe to be tested to the return water port inside the bucket and the other end to the outlet water port inside the bucket.

[0034] Oxygen-free water production and filling: This involves a large-scale circulation process. Open the platform's water supply shut-off valve 18, distributor valve 19, collector valve 20, and branch copper ball valve 16. Industrial distilled water enters the water supply inlet, is treated by the vacuum deaerator 1 to become oxygen-free water, flows through the copper distributor 2 to each branch, and then returns to the vacuum deaerator 1 via the copper collector 3. The vacuum deaerator 1 then removes air (including oxygen) from the pipelines. This circulation continues for several hours, while simultaneously monitoring the online dissolved oxygen meter 7 (which detects the liquid oxygen content in the pipelines) in each branch, until the liquid oxygen content in all branch pipelines is the same and no longer decreases.

[0035] Oxygen-free water circulation: also known as small circulation, shut down vacuum deaerator 1, shut down water supply shut-off valve 18 and all copper ball valves 16 on the branch line, and at the same time turn on circulation pump 6.

[0036] Oxygen Injection Test Tanks: Open the exhaust valve 11 and air valve 15 on top of each branch test tank 5, and open the air valve 15 on the oxygen cylinder 4. During this process, pure oxygen enters each test tank 5 from the bottom through the oxygen delivery pipeline. Since the density of oxygen is greater than that of air, the continuous supply of oxygen will slowly "squeeze out" the air in the test tank 5 from the exhaust valve above. At this time, by observing the oxygen concentration tester 10, adjust the exhaust valve 11 until the oxygen concentration in each branch test tank 5 is the same and no longer increases. Then close the exhaust valve 11 and air valve 15 of the test tank 5, and the air valve 15 on the oxygen cylinder 4.

[0037] Test Records: Oxygen content data from the online dissolved oxygen meter 7 on each branch was recorded periodically. The branch with the lowest oxygen content and the slowest increase was the optimal oxygen-blocking pipeline.

[0038] In this utility model, apart from the pipes inside the test tank 5, all the water pipes on this platform are copper pipes.

Claims

1. A flexible plastic pipe oxygen barrier test evaluation platform, comprising a vacuum degassing oxygen removal machine (1), a copper water distributor (2), a copper water collector (3), an oxygen cylinder (4) and a set of test barrels (5), the water outlet of the vacuum degassing oxygen removal machine (1) is connected with the water inlet of the copper water distributor (2) through a steel pipe, characterized in that The copper water distributor (2) is divided into two paths at each outlet, wherein the first path is that the outlet of the copper water distributor (2) is connected with the return water outlet of the test barrel (5) through a pipeline, the outlet of the test barrel (5) is connected with the water inlet of the copper water collector (3) through a pipeline, and the side outlet of the copper water collector (3) is connected with the side return water outlet of the vacuum degassing oxygen remover (1) through a pipeline.

2. A flexible plastic pipe oxygen barrier test evaluation platform according to claim 1, wherein The copper water distributor (2) is divided into two paths at each outlet, wherein the first path is that the outlet of the copper water distributor (2) is connected with the return water outlet of the test barrel (5) through a pipeline, the outlet of the test barrel (5) is connected with the water inlet of the copper water collector (3) through a pipeline, and the side outlet of the copper water collector (3) is connected with the side return water outlet of the vacuum degassing oxygen remover (1) through a pipeline.

3. A flexible plastic pipe oxygen barrier test evaluation platform according to claim 1, wherein The test barrel (5) comprises a barrel body (8), a sealing barrel cover (9) is arranged on the barrel body (8), an oxygen concentration tester (10) and an exhaust valve (11) are arranged on the upper surface of the sealing barrel cover (9), a winding core (12) is arranged in the barrel body (8), and an air inlet (13) is arranged on the side of the barrel body (8) close to the bottom.

4. A flexible plastic pipe oxygen barrier comparative test evaluation platform according to claim 3, wherein The air inlet (13) of the barrel body (8) is connected with the oxygen cylinder (4) through an oxygen conveying pipeline (14), wherein the oxygen conveying pipeline (14) is provided with an air valve (15).

5. A flexible plastic pipe oxygen barrier comparative test evaluation platform according to claim 2, wherein The copper water distributor (2) is divided into two paths at each outlet, wherein the first path is that the outlet of the copper water distributor (2) is connected with the return water outlet of the test barrel (5) through a pipeline, the outlet of the test barrel (5) is connected with the water inlet of the copper water collector (3) through a pipeline, and the side outlet of the copper water collector (3) is connected with the side return water outlet of the vacuum degassing oxygen remover (1) through a pipeline.

6. A flexible plastic pipe oxygen barrier comparative test evaluation platform according to claim 2, characterized in that The copper water distributor (2) is divided into two paths at each outlet, wherein the first path is that the outlet of the copper water distributor (2) is connected with the return water outlet of the test barrel (5) through a pipeline, the outlet of the test barrel (5) is connected with the water inlet of the copper water collector (3) through a pipeline, and the side outlet of the copper water collector (3) is connected with the side return water outlet of the vacuum degassing oxygen remover (1) through a pipeline.

7. A flexible plastic pipe oxygen barrier comparative test evaluation platform according to claim 2, wherein ​

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