CN103364155A - Well group comprehensive quality fuzzy detection device and use method - Google Patents
Well group comprehensive quality fuzzy detection device and use method Download PDFInfo
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- CN103364155A CN103364155A CN 201310005361 CN201310005361A CN103364155A CN 103364155 A CN103364155 A CN 103364155A CN 201310005361 CN201310005361 CN 201310005361 CN 201310005361 A CN201310005361 A CN 201310005361A CN 103364155 A CN103364155 A CN 103364155A
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Abstract
The invention discloses a well group comprehensive quality fuzzy detection device and a use method, and relates to test devices and use methods for testing the construction quality of the central air conditioning project of a ground source heat pump. The detection device comprises a constant temperature water tank, a water pump, a water replenishing device and a buried pipe well group. According to actual conditions, wells are grouped, and generally, each well group preferably comprises 2-40 geothermal wells. During the test, the well group comprising a plurality of geothermal wells is used as a unit instead of a single geothermal well, and the device is used for comprehensive analysis according to water temperature change values, water flow rates, pressure, differential pressure and the like at a general inlet and a general outlet of each buried pipe well group, so that the construction quality of buried pipes is judged. The well group check test time is short, and generally the test can be finished within 0.5-24 hours. The device also can be used for detecting construction quality of underwater heat exchangers, each heat exchange tube unit group comprising 2-40 heat exchange tube units can be detected, and the test time of each heat exchange tube unit group is within 0.5-24 hours.
Description
Technical field
The fuzzy pick-up unit of gang of wells overall quality and using method invention belong to Construction Quality check field, particularly a kind of proving installation and using method of checking the construction quality of ground-source heat pump central air-conditioning engineering.
Background technology
Ground source heat pump technology has obtained applying on a large scale in China's development rapidly now.The key of underground pipe earth source heat pump success or not is ground heat exchanger, and the construction quality of ground heat exchanger directly has influence on the heat transfer effect of engineering economics and long-time running.Even a good design has been arranged, also good construction must be arranged, the total quality of guarantee engineering, and, because ground heat exchanger is hidden in underground, can't see also and can not touch, various influence factors have a lot of uncertainties, cause the design of underground pipe to adjust and to revise design proposal according to the concrete condition of site operation.
For Practical Project, the underground pipe engineering often has several buried pipe wells not wait to a hundreds of buried pipe well, arranges the ground heat exchanger of a double-H groove weld or single U in each underground pipe.For design, the convenience of construction and operational management, general all buried pipe wells with whole engineering, be divided into several or tens even tens pipe laying zones, ground heat exchanger in the same zone is connected to same group of condensate correcting-distribuing device (secondary of the bottom or three grades of condensate correcting-distribuing devices), be connected to machine room by condensate correcting-distribuing device by pipeline again, the ground heat exchanger under the same group of condensate correcting-distribuing device in these same pipe laying zones just consists of a gang of wells.
Because the many reasons such as construction area geologic condition, construction factor, material factor, cause in same gang of wells, the degree of depth of every mouthful of well is not identical, the water resistance of heat interchanger is not identical yet ... and the quantity of the buried pipe well in each gang of wells also not necessarily meets designing requirement (existence causes disused well because of the accident of constructing in the practice of construction), situation more complicated.In this case, if the underground pipe testing apparatuss such as employing ZL201020626425.0 (a kind of underground pipe testing apparatus of high intelligence) are carried out the test of construction quality to every mouthful of well in the whole engineering, detect construction quality, obviously workload is too large, and test period is very long, both there is no need also to be difficult to real enforcement.Therefore, present way can only be the situation of random inspection partial test well, takes a part for the whole, and is unavoidable.
The underwater heat-exchanging pipe unit is a kind of enclosed heat interchanger that uses in the middle of the surface water such as lake water, river, river, sewage, seawater, be with the key distinction of underground pipe: underground pipe is to use Rock And Soil as thermal source, and the underwater heat-exchanging pipe unit is to use surface water as thermal source, and both have a lot of similar parts.In the hot pipe heat exchanger cellular system, exist the problem of quality testing aspect under water, same, existing proving installation also is not suitable for underwater heat-exchanging pipe unit group is detected yet.
The invention provides a kind of construction quality to underground pipe and blur the device that detects, when the underground pipe engineering is finished substantially, carry out fuzz testing take the underground pipe gang of wells as unit integral body, detect by the procedure quality in the middle of the pipe laying gang of wells carries out over the ground, supervise reliably the construction quality of underground pipe, be convenient to simultaneously the designer according to the situation of procedure inspection, timely adjusted design scheme, thereby the safe operation of assurance engineering.
By the retrieval to existing patent and other data, find no the quality detection device that similarly carries out the Fast Fuzzy test take whole gang of wells as unit.
Summary of the invention
In order to overcome the above problems, patent of the present invention provides the fuzzy pick-up unit of a kind of gang of wells overall quality and using method, it is a kind of underground pipe proving installation that is formed by constant temperature water tank, water pump, water replanishing device, pipeline and ground heat exchanger, the ground heat exchanger gang of wells that ground heat exchanger is made of jointly the underground pipe heat exchange well more than 2 is equipped with the measurement mechanisms such as water pump and temperature sensor, flow sensor, pressure transducer the Inlet and outlet water house steward of ground heat exchanger gang of wells.
In test process, the output temperature of the fuzzy pick-up unit of gang of wells overall quality keeps constant, and perhaps the output power of the fuzzy pick-up unit supply of gang of wells overall quality ground heat exchanger gang of wells keeps constant.
Constant temperature water tank can provide cold water or hot water according to the test working condition requirement, heating capacity or refrigerating capacity are 5-10KW or 10-20KW or 20-50KW or 50-70KW, specifically, cold water is provided during the imitation winter condition, the heat capacity of test underground pipe gang of wells, provide hot water during the imitation summer condition, the heat-sinking capability of test underground pipe gang of wells.Water pump can be the variable frequency adjustment circulating water flow, also flow automatic regulation and use firm discharge to test not.According to the Practical Project situation underground pipe heat exchange well is divided into some zones, generally each zone is a gang of wells, comprises 2-40 underground pipe heat exchange well, as: the ground heat exchanger gang of wells is made of jointly 2-5 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 6-7 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 8-9 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 10-12 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 13-16 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 17-20 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 21-30 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 31-40 underground pipe heat exchange wells; A ground heat exchanger that list is U-shaped or double-U-shaped is arranged in each underground pipe heat exchange well, be connected in parallel between each ground heat exchanger in the same gang of wells.
Because the degree of depth of each well is not quite identical, cause the water resistance in the heat exchanger tube of each well also not identical, water flow velocity and flow when operation in each heat exchanger tube are naturally also inconsistent, that is to say, the heat exchange amount of each the buried pipe well in the same gang of wells and inconsistent, and these actual conditions of engineering operation just.During this device to test, do not tangle in the heat transfer effect of every mouthful of well and concrete heat exchange amount, but be conceived to overall heat exchange effect and the heat exchange amount of whole gang of wells, both greatly reduced the number of times of test, more meet the engineering actual conditions yet.
At the total water inlet pipe and water outlet pipe of underground pipe gang of wells a water pump and some temperature sensors, flow sensor, pressure transducer, differential pressure pickup etc. are installed, add watt transducer, the data of these sensor collections are responsible for record and storage by processor.Not as unit during test take imbedded pipe heat-exchanging well individually, but the gang of wells that forms take a plurality of heat exchange wells is as measuring unit, the pipeline of all ground heat exchangers in the whole gang of wells is coupled together, the fuzzy pick-up unit of access gang of wells overall quality, temperature on the pipe laying gang of wells Inlet and outlet water house steward of base area, flow, pressure, pressure reduction etc., select wherein one or multinomial numerical value and numerical value change rule, carry out analysis-by-synthesis, so that entirely the buried tube heat exchanger gang of wells is as unit, fuzzy Judgment is the construction quality of buried tube heat exchanger gang of wells entirely.
The quantity of various sensors, tool for mounting body position and erection sequence can be as shown in drawings, also can be not according to shown in the accompanying drawing, position such as flow sensor, pressure transducer, differential pressure pickup, power sensor, temperature sensor and pressure transducer can change, flow sensor, temperature sensor and pressure transducer both can be installed near constant temperature water tank, also closely install pipe laying gang of wells house steward's gateway, and pressure transducer, differential pressure pickup, power sensor also can omit.
Form a closed circuit by constant temperature water tank, water pump, water replanishing device and underground pipe gang of wells, in test process, the output temperature of the fuzzy pick-up unit of gang of wells overall quality and using method keeps constant, and perhaps the output power of the fuzzy pick-up unit of gang of wells overall quality and using method supply ground heat exchanger gang of wells keeps constant.Gang of wells is applied the hot water flow of steady temperature, adopt the self-recording devices such as temperature, pressure, electric current, voltage, flow, the dynamic parameter of test overall process is finally calculated the exchange capability of heat of gang of wells.And according to electric current and power for backwater pressure reduction and water pump, judge whether system exists stopping state.According to the rate of water make-up of water replanishing device and the relation of time, judge whether system exists the situation of leakage and Partial Blocking.
At water replanishing device water flow sensor is installed, according to rate of water make-up what and with the relation of moisturizing time, can judge whether whole gang of wells has the place of leakage, can also further judge the size of leakage rate.As a closed circulation system that does not have leak case, the rate of water make-up of gang of wells test macro and the relation of time generally are very regular, present the early stage rate of water make-up large, the characteristics that the later stage rate of water make-up is little, As time goes on, rate of water make-up gradually reduces until level off to zero, the difference of the quantity of the underground pipe heat exchange well that comprises according to the gang of wells test macro, and all can there be certain difference the peak value of rate of water make-up and zero the time of leveling off to.And if a closed circulation system that has leak case, the corresponding relation characteristic of the rate of water make-up of gang of wells test macro and time generally has obvious variation, the corresponding relation regularity of rate of water make-up and time has not existed, As time goes on, even gradually reducing, rate of water make-up also is difficult to level off to zero, whether the size of leakage situation and leakage rate is arranged, very clear.
Same, at water replanishing device water flow sensor is installed, according to rate of water make-up what and with the corresponding relation of moisturizing time, can judge whether whole gang of wells has the place of obstruction, can also further judge the size of chocking-up degree.As a closed circulation system that does not have stopping state, the rate of water make-up of gang of wells test macro and the relation of time generally are very regular, present the early stage rate of water make-up large, the characteristics that the later stage rate of water make-up is little, As time goes on, rate of water make-up gradually reduces until level off to zero, the difference of the quantity of the underground pipe heat exchange well that comprises according to the gang of wells test macro, and all can there be certain difference the peak value of rate of water make-up and zero the time of leveling off to.And if a closed circulation system that has the Partial Blocking situation, the corresponding relation characteristic of the rate of water make-up of gang of wells test macro and time generally also has obvious variation, because underground pipe Partial Blocking, so that the air in the underground pipe can not be discharged smoothly, the corresponding relation regularity of rate of water make-up and time has obvious change, As time goes on, the amplitude less that rate of water make-up gradually reduces, and zero the time of leveling off to is also long, thereby can find out whether the situation of obstruction and the degree of obstruction are arranged in the system.
It is short that gang of wells is checked the test duration, generally can finish within 2-24 hour.Test duration can be: the test duration of each gang of wells is between 1-2 hour; Perhaps the test duration of each gang of wells is between 2-3 hour; Perhaps the test duration of each gang of wells is between 3-4 hour; Perhaps the test duration of each gang of wells is between 4-6 hour; Perhaps the test duration of each gang of wells is between 6-8 hour; Perhaps the test duration of each gang of wells is between 8-12 hour; Perhaps the test duration of each gang of wells is between 12-18 hour; Perhaps the test duration of each gang of wells is between 18-24 hour; Perhaps the test duration of each gang of wells is between 24-60 hour.
According to electric current and the power for backwater pressure reduction and water pump, can judge whether system exists stopping state.At water replanishing device water flow sensor is installed, according to rate of water make-up what and with the corresponding relation of moisturizing time, judge whether whole gang of wells has leakage or the local place of stopping up, the further size of judgement leakiness or local chocking-up degree.
By all gang of wells in the whole engineering are detected one by one, test the actual exchange capability of heat of total gang of wells, be analyzed with design data, judge whether to satisfy the requirement of design, and need to determine whether adjusted design.If the overall heat exchange ability less than design calculated value, needs to consider to mend well or other energy form.
After test is finished, can carry out following adjustment according to test result:
Check individual well or the perpendicularly buried pipe of gang of wells and silt and the dirty stifled situation of dirt of horizontal connecting leg, if the situation that is blocked is serious, can't recover unimpeded, then close problematic individual well in this gang of wells, again replenish and arrange heat exchange well or gang of wells.Check individual well or the perpendicularly buried pipe of gang of wells and the leakage situation of horizontal connecting leg, can't repair if leak, then must close this individual well or gang of wells, again replenish and arrange heat exchange well or gang of wells.
Exchange capability of heat according to each gang of wells is different, recomputate each branch flow of Adjustment System, guarantee that there is maximum exchange capability of heat in the underground pipe system, take static balancing valve as means, the realization of the design discharge after guaranteeing to adjust, if can't satisfy former designing requirement, then should consider to increase the quantity of underground pipe heat exchange well.
With above-mentioned underground pipe gang of wells test class seemingly, this device also can be used for the construction quality of underwater heat-exchanging pipe is detected, the underwater heat-exchanging pipe is a kind of enclosed heat interchanger that uses in the middle of the surface water such as lake water, river, river, sewage, seawater, be with the key distinction of underground pipe: underground pipe is to use Rock And Soil as thermal source, and the underwater heat-exchanging pipe is to use surface water as thermal source, and both are similar at aspects such as application target, functions.Underwater heat-exchanging pipe unit one by one is distributed under water, its construction quality also needs strict control, the heat exchange coil one-element group that the individual underwater heat-exchanging pipe unit of 2-40 is formed detects, as: 2-6 or 6-12 or 12-20 or 20-30 or underwater heat-exchanging pipe unit group of 30-40 underwater heat-exchanging pipe unit composition.Can find whether the situations such as leakage, obstruction are arranged, the problem that the heat exchange amount of also being convenient to cause because heat disturbs between unit coil pipe that timely discovery may exist and the unit coil pipe reduces, thereby in time adjusted, guarantee the quality of whole engineering, because the heat-transfer effect of heat exchanger tube in water is well more a lot of than Rock And Soil, thereby the test duration can significantly reduce, the test duration of each heat exchange coil one-element group namely can reach balance between 0.2-24 hour.Test duration can be: 0.2 hour or 0.2-1 hour or 1-2 hours or 2-3 hour or 3-6 hour or 6-10 hour or 10-15 hour or 15-24 hour.
The fuzzy pick-up unit of gang of wells overall quality and using method, it is a kind of underwater heat-exchanging pipe unit group proving installation that is formed by constant temperature water tank, water pump, water replanishing device, pipeline and underwater heat-exchanging device, the underwater heat-exchanging pipe unit group that the underwater heat-exchanging device is made of jointly the underwater heat-exchanging unit more than 2 is equipped with the measurement mechanisms such as water pump and temperature sensor, flow sensor, pressure transducer under water on heat exchange tube unit group's the Inlet and outlet water house steward.
Beneficial effect:
The invention provides a kind of construction quality to the ground buried pipe of ground source heat pump engineering and blur the device that detects, carry out fuzz testing take the underground pipe gang of wells as unit integral body, thereby within the shortest time, understand fast and relatively accurately the overall heat exchange situation of each gang of wells, and whether have stifled or the situations such as leakage, detect by the procedure quality in the middle of the pipe laying gang of wells carries out over the ground, supervise reliably the construction quality of underground pipe, be convenient to the designer according to the situation of gang of wells check, timely adjusted design scheme or the part that goes wrong in time processed, thus the safe operation of engineering guaranteed.
Description of drawings:
In test philosophy Fig. 1 of the fuzzy pick-up unit of gang of wells overall quality, the 1st, constant temperature water tank, the 2nd, water pump, the 3rd, flow sensor, the 4th, pressure transducer, the 5th, temperature sensor, the 6th, underground pipe gang of wells, the 7th, gang of wells house steward, the 8th, temperature sensor, the 9th, pressure transducer, the 10th, water replanishing device, the 11st, refill flow sensor.
Specific embodiment:
Specific embodiment one: as shown in Figure 1, after recirculated water in the constant temperature water tank 1 is heated, under the driving of the water pump 2 on the water-main, enters underground pipe gang of wells 6 and carry out heat exchange with Rock And Soil, then get back in the constant temperature water tank 1 by house steward 7, in whole closed system, carry out iterative cycles.Water replanishing device 10 is responsible for providing supplementing water to system, and refill flow sensor 11 detects the size of rate of water make-up.Entering water temperature sensor 5, leaving water temperature sensor 8, water entry pressure sensor 4, discharge pressure sensor 9, flow sensor 3 is installed on the Inlet and outlet water supervisor.Underground pipe gang of wells 6 is comprised of eight underground pipe individual wells, water pump 2 and pressure transducer 4(9), temperature sensor 5(8), flow sensor 3 all is installed on the water-main 7.Because the degree of depth of eight wells is not quite identical, cause the water resistance in the heat exchanger tube of eight wells also not identical, water flow velocity and flow when operation in each heat exchanger tube are naturally also inconsistent, that is to say, the heat exchange amount of each the buried pipe well in the same gang of wells and inconsistent, and these actual conditions of engineering operation just.During this device to test, do not tangle in the heat transfer effect of every mouthful of well and concrete heat exchange amount, but be conceived to overall heat exchange effect and the heat exchange amount of whole gang of wells, both greatly reduced the number of times of test, more meet the engineering actual conditions yet.
Specific embodiment two: after the recirculated water in the constant temperature water tank 1 is heated, under the driving of the water pump 2 on the water-main, enter underwater heat-exchanging pipe unit group and the surface water water body carries out heat exchange, then get back in the constant temperature water tank 1 by house steward 7, in whole closed system, carry out iterative cycles.Water replanishing device 10 is responsible for providing supplementing water to system, and refill flow sensor 11 detects the size of rate of water make-up.Entering water temperature sensor 5, leaving water temperature sensor 8, water entry pressure sensor 4, discharge pressure sensor 9, flow sensor 3 is installed on the Inlet and outlet water supervisor.Tool for mounting body position and the erection sequence of various sensors can be shown in schematic diagrams, also can be not according to shown in the schematic diagram, position such as flow sensor, temperature sensor and pressure transducer can exchange, flow sensor, temperature sensor and pressure transducer both can be installed near constant temperature water tank, also can install near underwater heat-exchanging pipe unit group's gateway.
Claims (8)
1. the gang of wells overall quality blurs pick-up unit and using method, it is a kind of underground pipe proving installation that is formed by constant temperature water tank, water pump, water replanishing device, pipeline and ground heat exchanger, it is characterized in that: the ground heat exchanger gang of wells that ground heat exchanger is made of jointly the underground pipe heat exchange well more than 2 is equipped with the measurement mechanisms such as water pump and temperature sensor, flow sensor, pressure transducer the Inlet and outlet water house steward of ground heat exchanger gang of wells.
2. according to the fuzzy pick-up unit of the described gang of wells overall quality of claim l and using method, it is characterized in that: the temperature on the pipe laying gang of wells Inlet and outlet water house steward of base area, flow, pressure, pressure reduction etc., select wherein one or multinomial numerical value and numerical value change rule, carry out analysis-by-synthesis, so that entirely the buried tube heat exchanger gang of wells is as unit, fuzzy Judgment is the construction quality of buried tube heat exchanger gang of wells entirely.
3. gang of wells overall quality according to claim 1 blurs pick-up unit and using method, and it is characterized in that: the ground heat exchanger gang of wells is made of jointly 2-5 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 6-7 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 8-9 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 10-12 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 13-16 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 17-20 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 21-30 underground pipe heat exchange wells; Perhaps the ground heat exchanger gang of wells is made of jointly 31-40 underground pipe heat exchange wells, is connected in parallel between each ground heat exchanger in the same gang of wells.
4. gang of wells overall quality according to claim 1 blurs pick-up unit and using method, it is characterized in that: in test process, the output temperature of the fuzzy pick-up unit of gang of wells overall quality keeps constant, and perhaps the output power of the fuzzy pick-up unit supply of gang of wells overall quality ground heat exchanger gang of wells keeps constant.
5. gang of wells overall quality according to claim 1 blurs pick-up unit and using method, and it is characterized in that: the test duration of each gang of wells is between 1-2 hour; Perhaps the test duration of each gang of wells is between 2-3 hour; Perhaps the test duration of each gang of wells is between 3-4 hour; Perhaps the test duration of each gang of wells is between 4-6 hour; Perhaps the test duration of each gang of wells is between 6-8 hour; Perhaps the test duration of each gang of wells is between 8-12 hour; Perhaps the test duration of each gang of wells is between 12-18 hour; Perhaps the test duration of each gang of wells is between 18-24 hour; Perhaps the test duration of each gang of wells is between 24-60 hour.
6. the gang of wells overall quality blurs pick-up unit and using method, it is a kind of underwater heat-exchanging pipe unit group proving installation that is formed by constant temperature water tank, water pump, water replanishing device, pipeline and underwater heat-exchanging device, it is characterized in that: the underwater heat-exchanging pipe unit group that the underwater heat-exchanging device is made of jointly the underwater heat-exchanging unit more than 2 is equipped with the measurement mechanisms such as water pump and temperature sensor, flow sensor, pressure transducer under water on heat exchange tube unit group's the Inlet and outlet water house steward.
7. the fuzzy pick-up unit of gang of wells overall quality according to claim 6 and using method is characterized in that: can the heat exchange coil one-element group that be comprised of 2-40 underwater heat-exchanging pipe unit be detected.
8. require the fuzzy pick-up unit of 6 described gang of wells overall qualities and using method according to patent, it is characterized in that: each underwater heat-exchanging pipe unit group's test duration is between 0.2-24 hour.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115532A (en) * | 2018-09-06 | 2019-01-01 | 陕西延长石油国际勘探开发工程有限公司 | A kind of mid-deep strata concentric locking collar tubular type performance testing device of heat exchanger and method |
| CN114577413A (en) * | 2022-03-04 | 2022-06-03 | 中广核核电运营有限公司 | Isolation valve sealing test device |
-
2013
- 2013-01-08 CN CN 201310005361 patent/CN103364155A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109115532A (en) * | 2018-09-06 | 2019-01-01 | 陕西延长石油国际勘探开发工程有限公司 | A kind of mid-deep strata concentric locking collar tubular type performance testing device of heat exchanger and method |
| CN114577413A (en) * | 2022-03-04 | 2022-06-03 | 中广核核电运营有限公司 | Isolation valve sealing test device |
| CN114577413B (en) * | 2022-03-04 | 2023-10-24 | 中广核核电运营有限公司 | Isolation valve tightness test device |
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Application publication date: 20131023 |