CN108896747B - PPR pipe life-span verifying attachment - Google Patents
PPR pipe life-span verifying attachment Download PDFInfo
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- CN108896747B CN108896747B CN201810571628.5A CN201810571628A CN108896747B CN 108896747 B CN108896747 B CN 108896747B CN 201810571628 A CN201810571628 A CN 201810571628A CN 108896747 B CN108896747 B CN 108896747B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 139
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 230000006698 induction Effects 0.000 claims abstract description 24
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 239000000523 sample Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 2
- 238000004880 explosion Methods 0.000 abstract 1
- 229920005630 polypropylene random copolymer Polymers 0.000 description 46
- 239000004033 plastic Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 239000004811 fluoropolymer Substances 0.000 description 4
- 229920002313 fluoropolymer Polymers 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
- G01N33/442—Resins; Plastics
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- General Health & Medical Sciences (AREA)
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Abstract
The invention relates to a PPR pipe service life testing device, which comprises a water collecting box, a temperature and pressure reducing device, a water storage box, a flow dividing pipe, a descending pipe, a time recorder, a temperature sensor, a positioning water leakage induction line, a water leakage controller, a collecting pipe, more than one detection pipe, a valve I and a valve II. The inspection device can determine the service life of the PPR pipes of different manufacturers, and prevent water pipe water explosion caused by advanced aging of the PPR pipes when the PPR pipes are used and installed by people.
Description
Technical Field
The invention relates to a PPR pipe service life inspection device, and belongs to the technical field of PPR pipe detection.
Background
The PPR pipe is a polypropylene random copolymer pipe, and is a water supply pipeline which is most adopted in the current home decoration engineering. In recent years, with the increasing market demands of industries such as construction industry, municipal engineering, hydraulic engineering, agriculture and industry, the PPR pipe industry in China shows a high-speed development situation. In 2015 years, in new construction, reconstruction and extension projects in China, 85% of building drainage pipelines adopt plastic pipes, 80% of building rainwater drainage pipes adopt plastic pipes, the usage amount of the plastic pipes of urban drainage pipelines reaches 50%, 85% of building water supply, hot water supply and heating pipes adopt plastic pipes, 80% of urban water supply pipelines (below DN400 mm) adopt plastic pipes, 90% of village and town water supply pipelines adopt plastic pipes, the application amount of urban gas plastic pipes (medium and low pressure pipes) reaches 40%, and 90% of building electric wire threading sheath pipes adopt plastic pipes. In conclusion, the field of application of PPR pipes has taken a position in the plastic market. However, in recent years, the quality of the PPR pipe has been problematic in the market, and this situation directly leads to the limitation of the service life of the PPR pipe in the construction industry.
Generally, a PPR pipe manufacturer can roughly estimate and guarantee the service life of a pipe when leaving a factory, and the common acceptance period in the market is 50 years, but the PPR pipe can be used for many years, and only after being installed on a building, the PPR pipe can be proved by accumulated use of months. For example, the lifetime of residential buildings is typically 70 years, and the lifetime of PPR pipes promised by manufacturers is 30-50 years, so that, because the current market does not have a practical means for measuring the lifetime of PPR pipes, one can only listen to the manufacturers' opinion, and the manufacturers can only define the lifetime based on the physical and chemical properties of the materials. When the PPR pipe is practically used, the PPR pipe is limited in length, a large number of adapters are required during construction, and the use characteristics of the adapters are not well specified in writing. The materials of PPR pipes are generally relatively reliable and normally do not leak water, but this is not absolute. The PPR pipe has the advantages of high temperature resistance and slightly poor pressure resistance, and the long-term working temperature cannot exceed 70 ℃. However, in residential houses, PPR pipes are used at the junctions of solar water heaters, household hot water pipes, and the like, and the PPR pipes are used for a long time, so that the PPR pipes basically cannot be used for 30-50 years, even about 10 years, which is promised by manufacturers, and water leakage occurs in the pipes, which increases troubles for lives of residents. Therefore, when the pipeline is modified, residents also use more hot water pipes of the PPR pipe.
In conclusion, the market does not have a device specially used for detecting the service cycle of the PPR pipe, so that people are anxious and uneasy about the service life of the PPR pipe when the PPR pipe is installed. After the water leakage protector is installed, water leakage occurs due to the fact that the water leakage does not reach the service life provided by a manufacturer, and great troubles are brought to life and economy of people. Therefore, a test station capable of detecting the service life of the PPR pipe is urgently needed in the market, and worry about the use of people is relieved.
Disclosure of Invention
The invention aims to provide a PPR pipe service life inspection device which is combined with a thermal power plant heat boiler to realize service life inspection of a PPR pipe. The invention reserves a port between the boiler superheater and the steam turbine in the steam-water system of the power plant boiler, and is connected with a downlink pipeline. Through this verifying attachment, can confirm the life-span of different producer PPR pipes, prevent that people from using when installing PPR pipe, ageing in advance because of PPR pipe, lead to the water pipe to explode water.
The technical scheme of the invention is as follows: a PPR pipe service life testing device comprises a water collecting box, a temperature and pressure reducing device, a water storage box, a flow dividing pipe, a down pipe, a time recorder, a temperature sensor, a positioning water leakage induction line, a water leakage controller, a collecting pipe, more than one detection pipe, a valve I and a valve II;
the bottom of the temperature and pressure reducing device is communicated with the top of the water storage tank, a temperature sensor is arranged at the bottom in the water storage tank, one end of a down pipe is communicated with the bottom of the water storage tank, the other end of the down pipe is communicated with one end of a flow dividing pipe, a valve I is arranged on the down pipe, each branch pipe at the other end of the flow dividing pipe is communicated with more than one detection pipe, each detection pipe is provided with a valve II, the bottom of the more than one detection pipe is communicated with each branch pipe at the upper part of the collecting pipe, a positioning water leakage induction line is fixed on the surface of the more than one detection pipe and is connected with a water leakage controller after surrounding more than one circle on the surface, the water leakage controller is connected with a time recorder, and the bottom of the collecting pipe is communicated with the upper end of a water collecting tank.
The temperature and pressure reducing device is connected with a steam-water system of the power plant boiler, an interface is reserved between a boiler superheater and a steam turbine in the steam-water system of the power plant boiler and is connected with a downlink pipeline, the temperature and pressure reducing device is connected with the downlink pipeline, and the bottom of the water collecting box is communicated with a deaerator of the steam-water system of the power plant boiler through a pipeline.
The temperature sensor is a digital temperature sensor, preferably an SF type, the temperature measuring range is 0-500 ℃, the working power supply is 24VDC, the maximum current is 50mA, the output signal is 4-20 mA, the probe of the temperature sensor is positioned at the bottom in the water storage tank, and the display screen is positioned outside the water storage tank.
The water collecting box is a slow water tank, and the temperature and pressure reducing device is an integrated temperature and pressure reducing device.
The positioning water leakage induction line is of an XW1000 type, the diameter of the cable is 6mm, the positioning water leakage induction line is a continuous detection line, the signal line is 2x26AWG, and the positioning water leakage induction line is insulated by fluoropolymer; the sensing wire was 2x30AWG with a conductive fluoropolymer sheath to detect the presence of water anywhere along the cable.
The water leakage controller is W-PC-3 type, the accuracy is 0.5% +/-0.5 meter of the length of a water leakage induction line, the power supply requires 24VAC, the 3W (220 VAC/12V/24VDC is optional) positioning water leakage induction line is matched with the water leakage controller for installation, and once water intrusion is detected, the water leakage controller can start an alarm and accurately indicate the water leakage position. In addition, when the water leakage controller detects water leakage alarm, the time recorder is controlled to memorize the water leakage time, so that the staff can conveniently check the record.
The detection tubes are of different models and are connected through the adapter.
The working process of the monitoring device is as follows:
(1) the device is arranged at a dry and clean place, before a test is detected, the stability of the device and the cleanness of each part are checked, the display temperature of a temperature sensor in a water storage tank is observed, and a temperature and pressure reducing device is adjusted to ensure that the water entering the water storage tank can be in a proper range without directly damaging a PPR test pipe;
(2) after the water temperature and the pressure in the water storage tank are proper, a valve I on the descending pipe is opened, so that water flows into each detection pipe;
(3) respectively opening valves II on the detection pipes, opening a time recorder after the water flow is stable, and recording the time;
(4) workers should regularly check the cleanliness of the surfaces of the detected PPR pipe and the water leakage induction line so as to prevent dust from falling and influencing the sensitivity of the water leakage induction line;
(5) when the water leakage controller finds out water leakage and gives an alarm, a worker should close the valve on the detection pipe of the branch as soon as possible and record the manufacturer, specification and service time of the test pipe.
(6) And after the recording is finished, quickly replacing a new tested PPR pipe, opening the branch valve, re-testing, and circulating until the PPR pipe leaks, so as to detect the service life of the PPR pipe.
The invention has the beneficial effects that:
(1) the inspection device is connected with the steam-water system part of the thermal power plant thermal boiler during inspection, so that hot water with proper pressure and temperature is not required to be additionally manufactured, and meanwhile, the normal operation of the boiler power plant is not influenced, and the inspection is convenient.
(2) The detection device can detect the service life of the PPR pipe when the PPR pipe leaves a factory, so that the service life and the performance of the PPR pipe put on the market can meet the use requirements.
(3) The pipes to be detected of different types in the detection device are connected through the adapter, so that the detection pipe is convenient to replace.
Drawings
FIG. 1 is a schematic structural diagram of the inspection apparatus of the present invention;
FIG. 2 is a schematic view of the connection structure of the inspection device of the present invention to a steam-water system of a thermal boiler of a thermal power plant;
the reference numbers in the figures are: 1-a water collecting box, 2-a temperature and pressure reducing device, 3-a water storage tank, 4-a shunt pipe, 5-a down pipe, 6-a time recorder, 7-a temperature sensor, 8-a positioning water leakage induction line, 9-a water leakage controller, 10-a collection pipe, 11-a detection pipe, 12-a valve I and 13-a valve II.
Detailed Description
Example 1: as shown in fig. 1-2, the device for testing the service life of the PPR pipe comprises a water collecting tank 1, a temperature and pressure reducing device 2, a water storage tank 3, a flow dividing pipe 4, a down pipe 5, a time recorder 6, a temperature sensor 7, a positioning water leakage induction line 8, a water leakage controller 9, a collecting pipe 10, 18 detection pipes 11, a valve i 12 and a valve ii 13;
the bottom of the temperature and pressure reducing device 2 is communicated with the top of the water storage tank 3, the bottom in the water storage tank 3 is provided with a temperature sensor 7, one end of the down pipe 5 is communicated with the bottom of the water storage tank 3, the other end of the down pipe 5 is communicated with one end of the shunt pipe 4, and the down pipe 5 is provided with a valve I12, the 18 detection pipes 11 are connected into 6 detection pipes through a connector, each branch pipe at the other end of the flow dividing pipe 4 is respectively communicated with 6 detection pipes, a valve II 13 is respectively arranged on the detection pipe at the upper part of the 6 detection pipes, the bottoms of the 6 detection pipes are respectively communicated with each branch pipe at the upper part of the collecting pipe 10, the positioning water leakage induction line 8 is fixed on the surfaces of the 6 detection pipes and is connected with the water leakage controller 9 after being encircled for 2 circles on the surfaces, the water leakage controller 9 is connected with the time recorder 6, and the bottom of the collecting pipe 10 is communicated with the upper end of the water collecting tank 1.
The temperature and pressure reducing device 2 is connected with a steam-water system of a power plant boiler, an interface is reserved between a boiler superheater and a steam turbine in the steam-water system of the power plant boiler and is connected with a downlink pipeline, the temperature and pressure reducing device 2 is connected with the downlink pipeline, and the bottom of the water collecting box 1 is communicated with a deaerator of the steam-water system of the power plant boiler through a pipeline, as shown in fig. 2.
The temperature sensor 7 is a digital temperature sensor, an SF type is selected, the temperature measuring range is 0-500 ℃, the working power supply is 24VDC, the maximum current is 50mA, the output signal is 4-20 mA, the probe of the temperature sensor 7 is positioned at the bottom in the water storage tank 3, and the display screen is positioned outside the water storage tank 3.
The water collecting box 1 is a slow water tank, and the temperature and pressure reducing device 2 is an integrated temperature and pressure reducing device.
The positioning water leakage induction line 8 is of an XW1000 type, the diameter of the cable is 6mm, the positioning water leakage induction line is a continuous detection line, the signal line is 2x26AWG, and the positioning water leakage induction line is insulated by fluoropolymer; the sensing wire was 2x30AWG with a conductive fluoropolymer sheath to detect the presence of water anywhere along the cable.
The water leakage controller 9 is of a W-PC-3 type, the accuracy is 0.5% +/-0.5 meter and 220VAC/12V/24VDC of the length of a water leakage induction line, the positioning water leakage induction line is installed in a matched mode with the water leakage controller, and once water intrusion is detected, the water leakage controller can start an alarm and accurately indicate a water leakage position. In addition, when the water leakage controller detects water leakage alarm, the time recorder is controlled to memorize the water leakage time, so that the staff can conveniently check the record.
The time recorder 6 is SR72 model of SUHED brand, the working voltage is DC 12-24V/AC 110-220V, the power consumption of the whole machine is less than or equal to 4W, and the recording range is 0-9999 times.
The working process of the checking device of the embodiment is as follows:
(1) the device is arranged at a dry and clean place, before a test is detected, the stability of the device and the cleanness of each part are checked, the display temperature of a temperature sensor in a water storage tank is observed, and a temperature and pressure reducing device is adjusted to ensure that the water entering the water storage tank can be in a proper range without directly damaging a PPR test pipe;
(2) after the water temperature and the pressure in the water storage tank are proper, a valve I on the descending pipe is opened, so that water flows into each detection pipe;
(3) respectively opening valves II on the detection pipes, opening a time recorder after the water flow is stable, and recording the time;
(4) workers should regularly check the cleanliness of the surfaces of the detected PPR pipe and the water leakage induction line so as to prevent dust from falling and influencing the sensitivity of the water leakage induction line;
(5) when the water leakage controller finds out water leakage and gives an alarm, a worker should close the valve on the detection pipe of the branch as soon as possible and record the manufacturer, specification and service time of the test pipe.
(6) And after the recording is finished, quickly replacing a new tested PPR pipe, opening the branch valve, re-testing, and circulating until the PPR pipe leaks, so as to detect the service life of the PPR pipe.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A PPR pipe service life testing device is characterized by comprising a water collecting box (1), a temperature and pressure reducing device (2), a water storage box (3), a flow dividing pipe (4), a down pipe (5), a time recorder (6), a temperature sensor (7), a positioning water leakage induction line (8), a water leakage controller (9), a collecting pipe (10), more than one detection pipe (11), a valve I (12) and a valve II (13);
the bottom of the temperature and pressure reducing device (2) is communicated with the top of the water storage tank (3), a temperature sensor (7) is arranged at the bottom in the water storage tank (3), one end of a down pipe (5) is communicated with the bottom of the water storage tank (3), the other end of the down pipe (5) is communicated with one end of a shunt pipe (4), a valve I (12) is arranged on the down pipe (5), each branch pipe at the other end of the shunt pipe (4) is respectively communicated with more than one detection pipe (11), a valve II (13) is respectively arranged on each detection pipe (11), the bottoms of more than one detection pipes (11) are respectively communicated with each branch pipe at the upper part of a collecting pipe (10), a positioning water leakage induction line (8) is fixed on the surface of more than one detection pipe (11) and is connected with a water leakage controller (9) after surrounding more than one circle on the surface, the water leakage controller (9) is connected with the time recorder (6), the bottom of the collecting pipe (10) is communicated with the upper end of the water collecting box (1), the temperature and pressure reducing device (2) is connected with a steam-water system of a boiler of a power plant, an interface is reserved in the middle of a boiler superheater and a steam turbine in the steam-water system of the boiler of the power plant, a downlink pipeline is connected, the temperature and pressure reducing device (2) is connected with the downlink pipeline, and the bottom of the water collecting box (1) is communicated with a deaerator of the steam-water system of the boiler of the power plant through a pipeline.
2. The PPR tube life testing device of claim 1, wherein: the temperature sensor (7) is a digital temperature sensor, a probe of the temperature sensor (7) is positioned at the bottom in the water storage tank (3), and the display screen is positioned on the outer side of the water storage tank (3).
3. The PPR tube life testing device of claim 1, wherein: the water collecting box (1) is a slow water tank, and the temperature and pressure reducing device (2) is an integrated temperature and pressure reducing device.
4. The PPR tube life testing device of claim 1, wherein: the positioning water leakage induction line (8) is of an XW1000 type, and the diameter of the cable is 6 mm.
5. The PPR tube life testing device of claim 1, wherein: the water leakage controller (9) is W-PC-3 type, and the accuracy is 0.5% +/-0.5 m of the length of the water leakage induction line.
6. The PPR tube life testing device of claim 1, wherein: the detection tubes (11) are of different types, and the detection tubes (11) of different types are connected through the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810571628.5A CN108896747B (en) | 2018-06-06 | 2018-06-06 | PPR pipe life-span verifying attachment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810571628.5A CN108896747B (en) | 2018-06-06 | 2018-06-06 | PPR pipe life-span verifying attachment |
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| CN108896747B true CN108896747B (en) | 2021-03-02 |
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