CN-121994636-A - Accelerated comparison test evaluation method and system for anti-scaling performance of plastic pipeline

CN121994636ACN 121994636 ACN121994636 ACN 121994636ACN-121994636-A

Abstract

The invention discloses an acceleration contrast test evaluation method and system for the anti-scaling performance of a plastic pipeline, comprising a constant temperature water tank and a plurality of test units, wherein the water outlet of the constant temperature water tank is connected with the input end of the test units through an input pipe, the water return port of the constant temperature water tank is connected with the output end of the test units through an output pipe, the test units comprise a plurality of test branches, each test branch is provided with a branch input port and a branch output port, the branch input ports are connected with the constant temperature water tank output port through the input port of the test unit where the test branch is positioned, and the branch output ports are connected with the water return port of the constant temperature water tank through the output port of the test unit where the test branch is positioned. And judging the anti-scaling capability of the pipeline by weighing the weight difference of the pipeline before and after the test. The smaller the weight increase, the better the anti-scaling capability of the tested pipeline.

Inventors

LU GANGFENG
YU LINJIE
CHEN YUGUANG

Assignees

临海伟星新型建材有限公司
浙江伟星新型建材股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260407

Claims (9)

1. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline is characterized by comprising a constant-temperature water tank (1) and a plurality of test units, wherein a water outlet (101) of the constant-temperature water tank (1) is connected with an input end of the test units through an input pipe, a water return port (102) of the constant-temperature water tank (1) is connected with an output end of the test units through an output pipe, the test units comprise a plurality of test branches, each test branch is provided with a branch input port and a branch output port, each branch input port is connected with an output port of the constant-temperature water tank (1) through an input port of the test unit where the branch input port is located, and each branch output port is connected with a water return port of the constant-temperature water tank (1) through an output port of the test unit where the branch output port is located.
2. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline according to claim 1 is characterized in that the test branch comprises a tested pipeline (24), two ports of the tested pipeline (24) are connected with stainless steel corrugated hoses (3), the ports corresponding to the stainless steel corrugated hoses (3) and the tested pipeline are connected through a clamping-pressing type adapter (4), the stainless steel corrugated hoses (3) at the input port of the test branch are connected with a male movable joint (5), the male movable joint (5) is connected with a return pipe (6), a branch flow meter (7) is installed at the upper branch pipe of the return pipe (6), a second shut-off valve (2) is installed at the branch pipe on one side of the return pipe (6), a third shut-off valve (8) and a fourth shut-off valve (9) are installed at the branch pipe on the other side of the return pipe (6), the input port of the return pipe (6) is connected with the water outlet of a constant temperature water tank (1), the stainless steel corrugated hoses (3) at the output port of the test branch are connected with the male movable joint (5), and the first shut-off valve (10) is connected with the first shut-off valve (10).
3. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline according to claim 1 or 2 is characterized in that the constant-temperature water tank (1) comprises a water tank body, a stirrer (12) and a heating net (13) are arranged inside the water tank body, a temperature sensing probe (14) and a plurality of liquid level probes (15) are arranged on the inner wall of the water tank body, and a heat preservation movable cover door (16) is arranged at the top port of the water tank body.
4. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline according to claim 3, wherein the water tank body is provided with a water supplementing port (17) and a sewage draining port (18).
5. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline according to claim 1 or 4 is characterized by comprising a circulating pump (19), wherein a water outlet (101) of the constant temperature water tank (1) is connected with a liquid channel of the circulating pump (19) and an input end of a test unit through an input pipe.
6. The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline according to claim 5 is characterized in that a first main shut-off valve (20), a pressure gauge (21) and a main flow regulating valve (22) are sequentially arranged on the input end of the input pipe from the constant temperature water tank (1) to the test unit; The second main shut-off valve (23) is arranged at the section from the constant temperature water tank (1) to the circulating pump (19), and the clamp-type flowmeter (25) is arranged at the section from the circulating pump (19) to the output end of the test unit.
7. An accelerated comparative test evaluation system for anti-fouling performance of plastic tubing according to claim 1, characterized in that it comprises a heat-retaining cover (26), said test unit being mounted in the heat-retaining cover (26), said test unit comprising 48 test branches.
8. An accelerated comparative test evaluation method for anti-fouling performance of plastic pipes using the system according to any one of claims 1-7, characterized by comprising the steps of: 1) Sample preparation and initial load bearing Firstly, 48 clean sample tubes are taken, the serial numbers of the clean sample tubes are 1, 2, 47 and 48 in sequence, the pipelines are sequentially cleaned and dried, then the dried pipelines are taken out and weighed, the serial numbers of each pipeline are marked for the initial weight of each sample to be measured to be A 1 、A 2 ……A 47 、A 48 and the data record is made, and finally, the sample tubes are sequentially arranged on the corresponding branch of a test platform, so that the sealing firmness and the looseness of the joint are ensured; 2) After the step 1) is finished, firstly opening a first main road shutoff valve (20) and a second main road shutoff valve (23), opening a first shutoff valve (10), a second shutoff valve (2) and a third shutoff valve (8) of a branch to be tested, and closing a fourth shutoff valve (9); Then, opening a water supplementing port (17) to inject the specified water quality of the experiment, observing a liquid level probe (15), stopping water injection after the water level reaches a set height, starting a circulating pump (19) to enable water flow to fill all branches, lightly knocking a pipeline to help air bubble discharge until no air bubble emerges at the water outlet of each branch; Then the circulating pump (19) is closed, the second shut-off valve (2) and the third shut-off valve (8) of each branch are closed, and the fourth shut-off valve (9) is opened; 3) After the step 2) is finished, starting a circulating pump (19), opening a heating network (13), raising the temperature of water in the system to the experimental set temperature, keeping the temperature stable, and according to the test environment of a scaling experiment, proportioning relevant solutions, respectively dissolving each reagent in a container, sequentially pouring the dissolved reagents into a constant-temperature water tank (1), and recording the adding time and the environmental condition; 4) After the step 3) is finished, the main road flow regulating valve is regulated to restore the main road flow to the reference value recorded during hydraulic balance regulation, then the system is kept to continuously run at the set temperature and flow, and key parameters of pressure, temperature and flow are monitored and recorded; 5) After the step 4) is finished, 4 branches are selected according to a preset sequence every 15 days, a first shut-off valve (10) and a fourth shut-off valve (9) of the corresponding branches are closed, the clamping and pressing type adapter (4) is disassembled, the sample tube is carefully taken out, the liquid in the tube is discharged, the inner wall is washed, then the inner wall is dried, the sample tube is weighed after cooling, the weight B 1 、B 2 、B 3 、B 4 after sampling is recorded, the sample tube after testing is remounted to the original branch, and the first shut-off valve (10) and the fourth shut-off valve (9) of the branch are opened to enable the sample tube to participate in circulation again.
9. The method for evaluating the anti-scaling performance of the plastic pipeline by the accelerated comparison test according to claim 8, wherein the weight change of the single sample pipe is calculated as delta m=B 1 -A 1 in the step 5), and the arithmetic average value is obtained when the weight change of 4 pipes are sampled for recording.

Description

Accelerated comparison test evaluation method and system for anti-scaling performance of plastic pipeline Technical Field The invention belongs to the technical field of detection of fluid conveying pipelines, and particularly relates to an acceleration contrast test evaluation method and system for anti-scaling performance of a plastic pipeline. Background With the improvement of the requirements of people on drinking water sanitation and heating efficiency, the problem of scaling on the inner wall of a pipeline is increasingly focused. Scaling not only affects water quality safety, but also reduces heat transfer efficiency and flow cross section of the pipeline. At present, a test and evaluation platform capable of standardizing, accelerating and simulating the pipeline scaling process and objectively comparing the scaling resistance of pipelines with different materials is lacking in the industry. The existing test means often have the problems of long period, single environment and the like, and the requirements of rapid screening of product research and development and quality control are difficult to meet. Therefore, the invention provides an acceleration contrast test evaluation method and system for the anti-scaling performance of a plastic pipeline. Disclosure of Invention In view of the problems existing in the prior art, the invention aims to provide an accelerated comparison test evaluation method and system for the anti-scaling performance of a plastic pipeline, and aims to solve the problem that the prior art lacks a standardized comparison test means. In order to achieve the above purpose, the technical scheme of the invention is as follows: The accelerated comparison test evaluation system for the anti-scaling performance of the plastic pipeline comprises a constant-temperature water tank and a plurality of test units, wherein a water outlet of the constant-temperature water tank is connected with an input end of the test units through an input pipe, a water return port of the constant-temperature water tank is connected with an output end of the test units through an output pipe, the test units comprise a plurality of test branches, each test branch is provided with a branch input port and a branch output port, each branch input port is connected with the output port of the constant-temperature water tank through an input port of the test unit where the branch input port is located, and each branch output port is connected with the water return port of the constant-temperature water tank through an output port of the test unit where the branch output port is located. Further, the test branch comprises a tested pipeline, two ports of the tested pipeline are connected with stainless steel corrugated hoses, the ports, corresponding to the tested pipeline, of the stainless steel corrugated hoses are connected through clamping and pressing type connectors, the stainless steel corrugated hoses located at the input ports of the test branch are connected with male screw movable connectors, the male screw movable connectors are connected with return pipes, branch flow meters are installed at the upper branch pipe positions of the return pipes, second shut-off valves are installed at the branch pipe positions on one side of the return pipes, third shut-off valves and fourth shut-off valves are installed at the branch pipe positions on the other side of the return pipes, the input ports of the branch pipe positions on the side of the return pipes are connected with the water outlet of a constant-temperature water tank, the stainless steel corrugated hoses located at the output ports of the test branch are connected with the male screw movable connectors, the first shut-off valves are connected with the first shut-off valves, and the first shut-off valves are connected with flow regulating valves. Further, the constant-temperature water tank comprises a water tank body, wherein a stirrer and a heating net are arranged in the water tank body, a temperature sensing probe and a plurality of liquid level probes are arranged on the inner wall of the water tank body, and a heat-preservation movable cover door is arranged at the top port of the water tank body. Further, a water supplementing port and a sewage draining port are formed in the water tank body. Further, the constant temperature water tank comprises a circulating pump, and a water outlet of the constant temperature water tank is connected with a liquid channel of the circulating pump and an input end of the testing unit through an input pipe. Further, a first main road shutoff valve, a pressure gauge and a main road flow regulating valve are sequentially arranged on the input end of the input pipe from the constant temperature water tank to the testing unit; And the output pipe is provided with a second main path shutoff valve from the constant temperature water tank to the circulating pump section, and a clamping type flowmeter is arranged from t