CN112577887B - Water supply pipeline ambient temperature simulation test system - Google Patents
Water supply pipeline ambient temperature simulation test system Download PDFInfo
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- CN112577887B CN112577887B CN202011542486.3A CN202011542486A CN112577887B CN 112577887 B CN112577887 B CN 112577887B CN 202011542486 A CN202011542486 A CN 202011542486A CN 112577887 B CN112577887 B CN 112577887B
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
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Abstract
The invention relates to a water supply pipeline environment temperature simulation test system, which comprises: a comprehensive environment test chamber: the temperature controller is used for providing the required test temperature for the test piece; a water temperature simulation device: pressurized water with required temperature for the test is provided for the test piece; external refrigeration and safety guarantee device: the refrigeration and safety guarantee are provided for the comprehensive environment test box. Compared with the prior art, the invention has the advantages of being suitable for the environmental temperature simulation of various pipelines, complete in structure, convenient to operate, complete in function and the like.
Description
Technical Field
The invention relates to the technical field of urban underground water supply pipeline safety, in particular to a water supply pipeline environment temperature simulation test system.
Background
The running state of the urban underground water supply pipeline is closely related to functional requirements and safety states of urban production, life and the like, however, under the influence of seasonal weather, particularly winter low-temperature weather, the freezing damage of the water supply pipeline is more and more obvious, particularly in south areas where water supply networks and related facilities lack systematic protective measures, structural damage accidents caused by low temperature of the pipeline and water meters are frequent, and the winter low-temperature safety of the urban water supply pipeline faces huge opportunities and challenges.
At present, foreign scholars and partial domestic scholars perform experimental research on the characteristics of a water supply pipeline affected by temperature, but limited by test conditions, the existing indoor test can only be basically applied to a small-diameter pipeline, most of the existing indoor tests can only perform temperature simulation on partial pipe sections of a complete pipeline, the temperature effect of the complete pipe section cannot be comprehensively simulated, and the actual situation of water body flowing inside the pipeline cannot be simulated; although the integrity of the water supply pipeline and the water flow condition in the water supply pipeline can be tested in an outdoor test, the temperature condition in the test only depends on the natural environment, so that the test result is not repeatable, and a systematic and complete conclusion about the structural safety of the water supply pipeline and the environmental temperature is difficult to draw.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a water supply pipeline environment temperature simulation test system.
The purpose of the invention can be realized by the following technical scheme:
a water supply pipeline environment temperature simulation test system comprises:
a comprehensive environment test chamber: the temperature controller is used for providing the required test temperature for the test piece;
a water temperature simulation device: pressurized water with required temperature for the test is provided for the test piece;
external refrigeration and safety guarantee device: the refrigeration and safety guarantee are provided for the comprehensive environment test box.
The main structure of the comprehensive environment test box is a walk-in high-low temperature test box, an internal pipeline of the comprehensive environment test box sequentially comprises a water inlet pipe, a regulating valve, a water temperature collecting instrument, a flowmeter, a pressure gauge, a reducing pipe section and a water outlet pipe along the water flow direction, the reducing pipe section is respectively arranged at two ends of the test pipe section and is respectively connected with the pressure gauge and the water outlet pipe, the water outlet pipe is connected with an external pipeline, the water temperature collecting instrument, the flowmeter and the pressure gauge can normally work under the low-temperature condition, and collected data can be connected to an external collector through a cable.
The water temperature simulation device is composed of a water storage container and a temperature sensor arranged in the water storage container, and the water storage container is connected with a water inlet pipe through a water pipeline.
The water pipeline is provided with a high-pressure water pump and a manual valve.
External refrigeration and safety guarantee device including the air compressor unit, gas holder, control valve, the unit that dries by cold, drying unit and the refrigerating unit that connect gradually, provide the refrigeration to the combined environment test case through the mode of forced air cooling to the inside air that provides the oxygen content and be greater than 20% of combined environment test case, and report to the police when the inside air oxygen content of combined environment test case is not enough, with staff's in the guarantee box security.
The test temperature range of the comprehensive environment test box is-35-100 ℃, the temperature fluctuation degree is +/-0.5 ℃, the temperature uniformity is less than or equal to 2 ℃, the heating rate is 1.0-3.0 ℃/min, the cooling rate is 0.7-1.0 ℃/min, the temperature of the comprehensive environment test box is set to be heated or cooled according to a set rate, and a real-time temperature curve is recorded.
The capacity of the water storage container is 0.9m3The temperature sensor is connected with a control panel of the comprehensive environment test box through a data line and adjusts the temperature through the control panel.
The utility model discloses a comprehensive environment test case, including box body, cable hole, rubber buffer, hole, and the breach that is used for passing the cable is arranged to the sensor of laying on the pipeline of comprehensive environment test case is connected to outside collector, the cable hole on be provided with the rubber buffer to open on the rubber buffer has the breach that is used for passing the cable, plug up the rubber buffer cable hole during the use, only pass through the cable in rubber buffer breach department, be used for avoiding outside air to influence the control of box inside temperature, when need not use the cable, then install the rubber buffer in hole site department, and cover the lid externally.
The length of the pipeline in the comprehensive environment test box is designed according to the standard, and a space of a test pipe section with the length of 1.5m is reserved.
The test system is characterized in that a plurality of groups of test parameters are respectively set according to a single variable principle, and the test parameters comprise an ambient temperature cooling rate, a lowest ambient temperature, ambient temperature cycle change times, duration of ambient continuous low temperature, a test pipe, a pipe diameter, a connection mode of a test pipeline, water pressure in the pipe, flow and water temperature.
Compared with the prior art, the invention has the following advantages:
the system is mainly used for researching the performance change of the water supply pipeline under the change of the environmental temperature, can comprehensively reflect the relation and the rule between the structural safety and the temperature effect of the water supply pipeline, can simulate and analyze the temperature action process and the rule of different types of pipeline joints by changing the pipeline connection mode, has complete structure, convenient operation and complete functions, and can be widely applied to the environmental temperature simulation test of various types of water supply pipelines.
Drawings
FIG. 1 is a schematic structural diagram of a water supply pipeline environment temperature simulation test system according to the present invention.
Fig. 2 is a schematic structural diagram of a cable hole on the high and low temperature test chamber of the present invention, wherein fig. 2a is a schematic structural diagram of a cable needing to be penetrated out, and fig. 2b is a schematic structural diagram of a cable needing not to be penetrated out.
FIG. 3 is a schematic diagram of the connection of the internal pipelines of the high and low temperature test chamber according to the present invention.
The notation in the figure is:
201-test piece, 202-test piece cable, 203-rubber plug, 204-test box body, 205-cable hole cover; 301-a water inlet pipe, 302-a regulating valve, 303-a water temperature collector, 304-a flowmeter, 305-a pressure gauge, 306-a reducing pipe section, 307-a test pipe section and 308-a water outlet pipe.
Detailed Description
In order to make the objects, features and embodiments of the present invention clearer, the following detailed description of the present invention will be made with reference to the accompanying drawings and specific examples.
Examples
As shown in fig. 1, the present invention provides a water supply pipeline environmental temperature simulation test system, which comprises:
a comprehensive environment test chamber for providing test required temperature for a test piece and a water temperature simulator for providing test required temperature for the test piece with pressurized water, the main body structure of the comprehensive environment test chamber is a step-in comprehensive environment test chamber, can provide environment temperature simulation conditions for a test piece, a water storage container is arranged in the water temperature simulation device, a temperature sensor is arranged in the water storage container, a pipeline interface (connected with a water inlet pipe 301) is arranged in the comprehensive environment test box, the water storage tank is connected with the water storage container through a water pipeline, the water pipeline is provided with a high-pressure water pump and a manual valve, the pipeline inside the comprehensive environment test box is sequentially provided with a water flow regulating valve, a water temperature acquisition instrument, a flow meter, a pressure gauge and a reducing pipe section, and the outside of the comprehensive environment test box is connected with an air compressor unit, a refrigeration unit, a drying unit, a refrigerating unit and a gas storage tank and is used for refrigeration and safety guarantee of the test box.
In this example, the water storage container of the water temperature simulator has a volume of about 0.9m3The water temperature simulator is used for providing required temperature for water in the water storage container, and meanwhile, a temperature sensor is placed in the water storage container and connected with the monitoring system, so that the water temperature simulator is practicalThe water temperature in the pipe is monitored and collected in real time.
The temperature in the comprehensive environment test chamber and the temperature and the water pressure of the water in the water storage container need to be adjusted according to a test scheme before a test, and the adjusting device of the test system is integrated, so that the adjustment can be carried out only by installing a program on a control panel of the comprehensive environment test chamber.
It should be noted that, during specific installation, as shown in fig. 2, the sensors (the water temperature collector 303, the flow meter 304 and the pressure gauge 305) arranged at the test piece 201 (i.e. the test pipeline 307) in the comprehensive environment test chamber need to be connected to the outside of the chamber 204 through the cable 202, so a cable hole is reserved on the comprehensive environment test chamber, the cable hole is provided with a rubber plug 203, and a gap is formed on the rubber plug 203, as shown in fig. 2a, when the cable needs to be used, the cable 202 passes through the cable hole, the cable hole is blocked by the rubber plug 203, and the cable passes through only the gap of the rubber plug, so as to prevent external air from affecting the control of the temperature inside the chamber; as shown in fig. 2b, when the cable is not used, the rubber stopper 203 is installed at the cable hole site and is covered with the cover 205 on the outside.
In the invention, the main body of the comprehensive environment test chamber, namely the connecting pipeline inside the walk-in high-low temperature test chamber, is very important, closely related to the purpose of the test effect, the internal pipeline of the test box body is connected as shown in fig. 3, the test box is connected with a water flow regulating valve 302 after passing through a water inlet pipe 301, so as to adjust the flow rate of the internal pipeline, and then the water temperature collector 303, the flow meter 304 and the pressure gauge 305 are connected in sequence, and the water temperature collector 303, the flow meter 304 and the pressure gauge 305 can normally operate at a low temperature (about-20 c), the collected data can be connected to an external collector through a data line (cable), the test pipe 307 has a length of 1.5m, as the pipe diameter is a test parameter, reducing pipe sections 306 are arranged in front of and behind the test pipe section, and finally the pipe section in the box body is connected with an external pipeline through a water outlet pipe 308.
Furthermore, the structural form of the test tube section and the sensors arranged can be determined according to the test purpose. The invention can realize the test of different pipe sections such as a flange connecting pipe, a socket joint connecting pipe, a flange joint, a socket joint and the like, can acquire mechanical parameters such as strain, displacement and the like of the test pipe section through a strain sensor, a displacement sensor, a thermocouple and the like, and can acquire other parameters such as temperature, water pressure, flow and the like through a test box monitoring system, a pressure gauge, a flowmeter and the like.
The water supply pipeline environment temperature simulation test system provided by the invention utilizes the comprehensive environment test box to simultaneously and respectively provide the environment temperature and the temperature of the required internal water body for the test piece, utilizes the combination of the high-pressure water pump, the flowmeter, the pressure gauge, the water flow regulating valve, the water temperature collector and the like to realize the functions of detecting and adjusting the flow, the pressure and the water temperature, and utilizes the strain sensor, the displacement sensor, the thermocouple and the like to monitor the test piece in real time and collect data.
Claims (3)
1. A water supply pipeline environment temperature simulation test system is characterized by comprising:
a comprehensive environment test chamber: the comprehensive environment test box is mainly structurally a walk-in high-low temperature test box, an internal pipeline of the comprehensive environment test box sequentially comprises a water inlet pipe (301), an adjusting valve (302), a water temperature acquisition instrument (303), a flowmeter (304), a pressure gauge (305), a reducing pipe section (306) and a water outlet pipe (308) along the water flow direction, the reducing pipe section (306) is respectively arranged at two ends of a test pipe section (307) and is respectively connected with the pressure gauge (305) and the water outlet pipe (308), the water outlet pipe (308) is connected with an external pipeline, the test temperature range of the comprehensive environment test box is-35-100 ℃, the temperature fluctuation degree is +/-0.5 ℃, the temperature uniformity is less than or equal to 2 ℃, the temperature rise rate is 1.0-3.0 ℃/min, the temperature drop rate is 0.7-1.0 ℃/min, the temperature of the comprehensive environment test box is set to be raised or lowered according to a set rate, recording a real-time temperature curve, and reserving a space of a test pipe section (307) with the length of 1.5m in the comprehensive environment test box;
a water temperature simulation device: the water temperature simulator comprises a water storage container and a temperature sensor arranged in the water storage containerThe sensor is characterized in that the water storage container is connected with a water inlet pipe (301) through a water pipeline, and the capacity of the water storage container is 0.9m3The temperature sensor is connected with a control panel of the comprehensive environment test box through a data line and adjusts the temperature through the control panel;
external refrigeration and safety guarantee device: the external refrigeration and safety guarantee device comprises an air compressor unit, an air storage tank, a control valve, a refrigeration unit, a drying unit and a refrigeration unit which are sequentially connected, the refrigeration is provided for the comprehensive environment test box in an air cooling mode, air with the oxygen content larger than 20% is provided for the interior of the comprehensive environment test box, and an alarm is given when the oxygen content of the air in the comprehensive environment test box is insufficient so as to guarantee the safety of workers in the box;
the test system is characterized in that a plurality of groups of test parameters are respectively set according to a single variable principle, and the test parameters comprise an ambient temperature cooling rate, a lowest ambient temperature, ambient temperature cycle change times, duration of ambient continuous low temperature, a test pipe, a pipe diameter, a connection mode of a test pipeline, water pressure in the pipe, flow and water temperature.
2. The water supply pipeline environment temperature simulation test system according to claim 1, wherein a high pressure water pump and a manual valve are arranged on the water pipeline.
3. The water supply pipeline environment temperature simulation test system according to claim 1, wherein a cable hole is reserved in a side wall of a box body (204) of the comprehensive environment test box and used for connecting a sensor arranged on an internal pipeline of the comprehensive environment test box to an external collector, a rubber plug (203) is arranged on the cable hole, a notch used for penetrating through a cable (202) is formed in the rubber plug (203), the cable hole is blocked by the rubber plug (203) during use, the cable (202) is only passed through the notch of the rubber plug (203) to avoid the influence of external air on the control of the internal temperature of the box body, and when the cable is not needed, the rubber plug (203) is installed at the hole position and is covered with a cover (205) on the outside.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011542486.3A CN112577887B (en) | 2020-12-23 | 2020-12-23 | Water supply pipeline ambient temperature simulation test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011542486.3A CN112577887B (en) | 2020-12-23 | 2020-12-23 | Water supply pipeline ambient temperature simulation test system |
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| CN112577887A CN112577887A (en) | 2021-03-30 |
| CN112577887B true CN112577887B (en) | 2022-06-21 |
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| CN202011542486.3A Active CN112577887B (en) | 2020-12-23 | 2020-12-23 | Water supply pipeline ambient temperature simulation test system |
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| CN116328857A (en) * | 2023-02-16 | 2023-06-27 | 广州五所环境仪器有限公司 | Cable fixing device and environment test box |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562512U (en) * | 2011-12-06 | 2012-11-28 | 中国测试技术研究院流量研究所 | Stepping type changeable environment simulation device |
| CN107340110A (en) * | 2017-06-26 | 2017-11-10 | 天津航天瑞莱科技有限公司 | A kind of vibration integrated pilot system of accumulated ice sleet |
| CN206944539U (en) * | 2017-07-19 | 2018-01-30 | 无锡冠亚恒温制冷技术有限公司 | Air energy low-temperature refrigerator |
| CN208918809U (en) * | 2018-10-12 | 2019-05-31 | 无锡威孚高科技集团股份有限公司 | Air compressor performance test system |
| CN211603007U (en) * | 2020-01-17 | 2020-09-29 | 河北科技大学 | Measuring device for hydration temperature rise of cementing material |
-
2020
- 2020-12-23 CN CN202011542486.3A patent/CN112577887B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202562512U (en) * | 2011-12-06 | 2012-11-28 | 中国测试技术研究院流量研究所 | Stepping type changeable environment simulation device |
| CN107340110A (en) * | 2017-06-26 | 2017-11-10 | 天津航天瑞莱科技有限公司 | A kind of vibration integrated pilot system of accumulated ice sleet |
| CN206944539U (en) * | 2017-07-19 | 2018-01-30 | 无锡冠亚恒温制冷技术有限公司 | Air energy low-temperature refrigerator |
| CN208918809U (en) * | 2018-10-12 | 2019-05-31 | 无锡威孚高科技集团股份有限公司 | Air compressor performance test system |
| CN211603007U (en) * | 2020-01-17 | 2020-09-29 | 河北科技大学 | Measuring device for hydration temperature rise of cementing material |
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