CN205374768U - Ground -source heat pump pipe laying vertically recharges closely knit degree test system - Google Patents
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- CN205374768U CN205374768U CN201521130386.4U CN201521130386U CN205374768U CN 205374768 U CN205374768 U CN 205374768U CN 201521130386 U CN201521130386 U CN 201521130386U CN 205374768 U CN205374768 U CN 205374768U
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- 238000012360 testing method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 71
- 238000007405 data analysis Methods 0.000 claims abstract description 41
- 230000002285 radioactive effect Effects 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims description 89
- 238000005056 compaction Methods 0.000 claims description 45
- 239000002689 soil Substances 0.000 claims description 24
- 238000001514 detection method Methods 0.000 claims description 5
- 238000007639 printing Methods 0.000 claims description 3
- 230000011664 signaling Effects 0.000 abstract 4
- 230000008054 signal transmission Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005260 alpha ray Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005250 beta ray Effects 0.000 description 1
- 238000001739 density measurement Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Measurement Of Radiation (AREA)
Abstract
The utility model provides a ground -source heat pump pipe laying vertically recharges closely knit degree test system, include: signalling collection equipment, signal transmission line, data analysis equipment and winch, produce the radioactive ray that intensity was preset in transmission through signalling collection equipment, and detect the intensity of recharging the radioactive ray that the layer reflected around the measuring position, signal transmission line transmits the equipment for data analysis with the intensity of the radioactive ray that reflect that signalling collection equipment detected, data analysis equipment is according to the intensity of the radioactive ray line of signalling collection equipment emergence, the intensity of the radioactive ray that reflect that detect and the information of measuring position, calculation obtains the volume density who recharges the layer around the measuring position, confirm the closely knit degree that recharges the layer around the measuring position according to the volume density who recharges the layer around the measuring position. Utilize the radioactive ray measurement to recharge the volume density on layer, the accuracy of confirming to recharge the closely knit degree on layer, assurance measuring result according to the volume density who recharges the layer.
Description
Technical field
This utility model relates to soil source heat pump technical field, particularly relates to a kind of soil source heat pump Vertical pendulum tiltmeters and recharges degree of compaction test system.
Background technology
nullDue to energy-conservation and environmental protection demand，The soil source heat pump of Vertical pendulum tiltmeters is adopted to obtain substantial amounts of application and popularization at present，But，In application process, a lot of problem is also cruelly spilt at the soil source heat pump adopting Vertical pendulum tiltmeters，Wherein very important point is exactly the construction quality problem of Vertical pendulum tiltmeters，Bury underground due to underground pipe and belong to concealed work，After boring is recharged，It is difficult to that it is recharged quality detect，Therefore，Partly do not master a skill main points，Or part does not have the unit in charge of construction of Professional knowledge，Some inappropriate measures are often taked when Vertical pendulum tiltmeters recharges，Namely cannot check after completion hurriedly，Result in some projects of poor quality owing to recharging，The heat transfer effect causing Vertical pendulum tiltmeters is undesirable，Have impact on the operation of whole soil source heat pump，Serious even project is completely discarded cannot be used，That therefore how to check Vertical pendulum tiltmeters recharges quality，Namely how to differentiate that the degree of compaction that Vertical pendulum tiltmeters recharges is a difficult problem for an engineer applied.
After recharging due to Vertical pendulum tiltmeters boring, just it is permanently disposed on underground, currently without effective physical detecting means, it can be carried out degree of compaction test, what generally adopt uses ground thermal property tester, records static water temperature in Vertical pendulum tiltmeters, by the comparison of water temperature, rule of thumb judging that it recharges degree of compaction, error is bigger.
Have also been proposed, at embedded underground signal generator, then pass through the signal intensity at whole Vertical pendulum tiltmeters and judge degree of compaction situation, this situation operability is very poor, because Vertical pendulum tiltmeters bury underground all at about 100m, even deeper, and caliber of holing is only small, is placed on bottom pipe laying by signal generator and is difficult to.
Utility model content
This utility model provides a kind of soil source heat pump Vertical pendulum tiltmeters to recharge degree of compaction test system, it is possible to accurately measures Vertical pendulum tiltmeters and recharges degree of compaction.
This utility model first aspect provides a kind of soil source heat pump Vertical pendulum tiltmeters to recharge degree of compaction test system, and this system includes: signal launches collecting device, signal transmssion line, data analysis facilities and winch；
Described signal is launched collecting device and is connected with the first end of described signal transmssion line and the cable of described winch respectively, and the second end of described signal transmssion line is connected with described data analysis facilities, and described data analysis facilities is also connected with the monitor of described winch；
Described winch is placed on the measurement position in Vertical pendulum tiltmeters for described signal being launched collecting device by described cable, and by described monitor, the information of described measurement position is sent to described data analysis facilities；
Described signal launches collecting device for being generated and transmitted by the lonizing radiation of preset strength, and detects the intensity recharging the lonizing radiation that layer reflects around described measurement position；
Described signal transmssion line is transferred to described data analysis facilities for the intensity that described signal is launched the lonizing radiation reflected that collecting device detects；
Described data analysis facilities launches the intensity of the lonizing radiation that collecting device is launched and the information of described measurement position for the intensity of the lonizing radiation reflected, the described signal detected according to described signal transmitting collecting device, calculate the bulk density recharging layer obtaining around described measurement position, determine the degree of compaction recharging layer around described measurement position according to the bulk density recharging layer around described measurement position.
Optionally, described signal is launched collecting device and is included: radioactive source, the first radiation monitor and the second radiation monitor, and the position of described first radiation monitor is higher than described radioactive source, and the position of described second radiation monitor is higher than described first radiation monitor；
Described radioactive source is for being generated and transmitted by the lonizing radiation of described preset strength；
Described first radiation monitor and the described second radiation monitor detection intensity recharging the lonizing radiation that layer reflects around described measurement position.
Optionally, described data analysis facilities includes: build-out signal compensation module, signal amplifier, computing module and display, the described input of build-out signal compensation module is connected with the second end of described signal transmssion line, the described outfan of build-out signal compensation module is connected with the input of described signal amplifier, the outfan of described signal amplifier is connected with the input of described computing module, and the outfan of described computing module is connected with described display；
Described build-out signal compensation module is transferred to described signal amplifier after carrying out build-out compensation for the signal that the transmission of described signal transmssion line is come；
Described signal amplifier is for being transferred to described computing module after the signal of described build-out signal compensation module output is amplified；
Described computing module is identified obtaining described signal for the signal that described signal amplifier is exported and launches the intensity of the lonizing radiation reflected that collecting device detects, launch, according to described signal, the intensity of the lonizing radiation reflected that collecting device detects, described signal launches the intensity of lonizing radiation that collecting device launches and the information of described measurement position, calculate the bulk density recharging layer obtaining around described measurement position, determine the degree of compaction recharging layer around described measurement position according to the bulk density recharging layer around described measurement position；
Described display is for showing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position.
Optionally, described data analysis facilities also includes:
Memory module, for storing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position；
Print module, for printing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position.
Optionally, described signal transmitting collecting device also includes:
Temperature sampler, for gathering the temperature around described measurement position；
The temperature that described data line is additionally operable to around by described measurement position is sent to described data analysis facilities；
Described display is additionally operable to show the temperature around described measurement position.
The soil source heat pump Vertical pendulum tiltmeters that this utility model provides recharges degree of compaction test system and includes: signal launches collecting device, signal transmssion line, data analysis facilities and winch, launch collecting device by signal and be generated and transmitted by the lonizing radiation of preset strength, and detection is through measuring the intensity recharging the lonizing radiation that layer reflects around position, signal is launched the intensity of the lonizing radiation reflected that collecting device detects and is transferred to data analysis facilities by signal transmssion line, data analysis facilities launches the intensity of the lonizing radiation line that collecting device occurs according to signal, the information of the intensity of the lonizing radiation reflected detected and measurement position, calculate and obtain measuring the bulk density recharging layer around position, according to the degree of compaction recharging layer around the true measurement position of the bulk density recharging layer measured around position.Utilize radiation measurement to recharge the bulk density of layer, determine the degree of compaction recharging layer according to the bulk density recharging layer, it is ensured that the accuracy of measurement result.
Accompanying drawing explanation
Fig. 1 recharges the structural representation of degree of compaction test system for a kind of soil source heat pump Vertical pendulum tiltmeters that this utility model provides；
Fig. 2 launches the structural representation of collecting device for a kind of signal that this utility model provides；
Fig. 3 recharges the structural representation of degree of compaction test system for the another kind of soil source heat pump Vertical pendulum tiltmeters that this utility model provides.
Description of reference numerals:
Signal launches collecting device: 1；Signal transmssion line: 2；
Winch: 3；Data analysis facilities: 4；
Radioactive source: 11；First radiation monitor: 12；
Second radiation monitor: 13；Temperature sampler 14；
Build-out signal compensation module: 41；Signal amplifier: 42；
Computing module: 43；Display: 44.
Detailed description of the invention
Soil source heat pump is a kind of to realize the equipment to ground architecture refrigerating or heating by carrying out heat exchange with soil, the critical piece carrying out heat exchange in soil source heat pump with soil is vertical U-type underground pipe, in the process installing soil source heat pump, first hole in soil, then vertical U-type underground pipe is placed in the borehole, inject between the most backward borehole wall and U underground pipe and recharge material, recharge material for sealing boring, prevent from causing infiltration by boring between the surface water and underground different water cut layer, strengthen the heat exchange effect of vertical U-type underground pipe and surrounding soil simultaneously, therefore, the degree of compaction to recharging body is needed to measure after having constructed.The soil source heat pump Vertical pendulum tiltmeters that this utility model provides recharges degree of compaction test system and is just used to soil source heat pump Vertical pendulum tiltmeters recharges degree of compaction measurement.
Fig. 1 recharges the structural representation of degree of compaction test system for a kind of soil source heat pump Vertical pendulum tiltmeters that this utility model provides, as shown in Figure 1, this system includes: signal launches collecting device 1, signal transmssion line 2, winch 3 and data analysis facilities 4, signal is launched collecting device 1 and is connected with the first end of signal transmssion line 2 and the cable of winch 3 respectively, second end of signal transmssion line 2 is connected with data analysis facilities 4, and data analysis facilities 4 is also connected with the monitor of winch 3.
Winch 3 for launching, by cable, the measurement position that collecting device 1 is placed in Vertical pendulum tiltmeters by signal, and by monitor, the information of measurement position is sent to data analysis facilities 4.Vertical pendulum tiltmeters is generally longer, can areal survey, such as, measure once every 1 meter or 2 meters, signal can be launched collecting device 1 place by controlling the length of cable of winch 3 and measure position accurately, what the length of cable of winch 3 represented is exactly the measurement position in Vertical pendulum tiltmeters, and therefore, length of cable is sent to data analysis facilities 4 as the information measuring position by the monitor of winch 3.
Signal launches collecting device 1 for being generated and transmitted by the lonizing radiation of preset strength, lonizing radiation include: gamma-rays (gamma ray), X ray, alpha ray, β ray etc., the classification of lonizing radiation is not limited by this utility model, meet test condition demand, and do not violate country relevant regulations ray all can attempt adopt, signal launch collecting device 1 can adopt existing any lonizing radiation.Lonizing radiation corpuscular radiation is gone out and can layer scattering of recharging around the detected position of part be absorbed, remaining lonizing radiation particle can be reflected back, signal is launched collecting device 1 and is detected through measuring the intensity recharging the lonizing radiation particle that layer reflects around position, and signal transmssion line 2 is transferred to data analysis facilities 4 for the intensity that signal is launched the lonizing radiation reflected that collecting device 1 detects.Launch collecting device 1 due to signal and be placed in inside underground pipe, although it is smooth in pipe, but there will still likely be the rotation of different angles in various degree and bending, therefore, signal launches the design of collecting device 1 to be needed to take into full account practical application factor, and the restriction of the underground pipe pipe diameter owing to applying in the market, signal is launched the size of collecting device 1 and diameter can be adopted less than 15mm, the length structure less than 40cm.
Data analysis facilities 4 is launched the intensity of the lonizing radiation that collecting device 1 is launched for the intensity of the lonizing radiation reflected detected according to signal transmitting collecting device 1, signal and measures the information of position, calculate and obtain measuring the bulk density recharging layer around position, according to the degree of compaction recharging layer around the true measurement position of the bulk density recharging layer measured around position.
Wherein, the intensity of the lonizing radiation that signal launches collecting device 1 transmitting can be pre-stored in data analysis facilities 4, it is also possible to is launched collecting device 1 by signal and is sent to data analysis facilities 4.The intensity that data analysis facilities 4 launches the intensity of the lonizing radiation reflected that collecting device 1 detects and the lonizing radiation of signal transmitting collecting device 1 transmitting according to signal can calculate the bulk density recharging layer obtained around measurement position, how calculating bulk density is prior art, repeats no more here.After calculating the bulk density obtaining recharging layer, the size of the bulk density relatively recharging layer and the bulk density recharging layer standard, owing to the bulk density of different medium is different, may determine that according to the bulk density recharging layer and recharge whether layer fills closely knit, recharging layer bulk density of standard can obtain through great many of experiments measurement.If the bulk density recharging layer around calculated measurement position less than with the bulk density recharging layer standard, and the difference of the two is more than default threshold value, then may determine that the degree of compaction recharging layer measured around position is undesirable.If the bulk density recharging layer around measurement position is more than or equal to the bulk density recharging layer standard, although or measure the bulk density recharging layer around position less than the bulk density recharging layer standard, but the difference of the two is less than default threshold value, then may determine that the degree of compaction recharging layer measured around position meets the requirements.
The soil source heat pump Vertical pendulum tiltmeters of the present embodiment recharges degree of compaction test system and includes: signal launches collecting device, signal transmssion line, data analysis facilities and winch, launch collecting device by signal and be generated and transmitted by the lonizing radiation of preset strength, and detection is through measuring the intensity recharging the lonizing radiation that layer reflects around position, signal is launched the intensity of the lonizing radiation reflected that collecting device detects and is transferred to data analysis facilities by signal transmssion line, data analysis facilities launches the intensity of the lonizing radiation line that collecting device occurs according to signal, the information of the intensity of the lonizing radiation reflected detected and measurement position, calculate and obtain measuring the bulk density recharging layer around position, according to the degree of compaction recharging layer around the true measurement position of the bulk density recharging layer measured around position.Utilize radiation measurement to recharge the bulk density of layer, determine, according to the bulk density recharging layer, the degree of compaction recharging layer further, it is ensured that the accuracy of measurement result.
It addition, signal transmitting collecting device volume is little in the present embodiment, it is possible to after Vertical pendulum tiltmeters is recharged, signal is launched collecting device and is placed in Vertical pendulum tiltmeters and measures.
Fig. 2 launches the structural representation of collecting device for a kind of signal that this utility model provides, as shown in Figure 2, signal is launched collecting device 1 and is included: radioactive source the 11, first radiation monitor 12 and the second radiation monitor 13, the position of the first radiation monitor 12 is higher than radioactive source 11, and the position of the second radiation monitor 13 is higher than the first radiation monitor 12.In the present embodiment, distance between second radiation monitor 13 and the first radiation monitor 12 should arrange suitable distance according to the difference of lonizing radiation, this is because through measuring the direction of the lonizing radiation recharging layer reflection around position and uncertain, in order to the lonizing radiation that all directions reflect detected, so arranging two radiation monitors, and between two detectors, there is certain distance.
Wherein, radioactive source 11 for being generated and transmitted by the lonizing radiation of preset strength, lonizing radiation can adopt the slightly lower radioactive source of energy density as137CSDeng, radioactive source can be placed in radiation source slot, and the first radiation monitor and the second radiation monitor utilize the Compton effect detection of gamma ray through measuring the intensity recharging the lonizing radiation that layer reflects around position.The number of radiation monitor detector is not limited by the application, and the number of certain radiation monitor detector is more many, and the result of measurement is likely to more accurate.
As shown in Figure 2, signal launches collecting device 4 can also include Temperature sampler 14, Temperature sampler 14 is for gathering the temperature measured around position, data line 2 is additionally operable to the temperature measured around position is sent to data analysis facilities 4, the position of Temperature sampler 14 can be arranged between radioactive source 11 and the first radiation monitor 12, certainly, the position of Temperature sampler 14 can be above the position of the second radiation monitor 13, and this is not limited by the application.
Fig. 3 recharges the structural representation of degree of compaction test system for the another kind of soil source heat pump Vertical pendulum tiltmeters that this utility model provides, as shown in Figure 3, in the present embodiment, signal is launched collecting device 1 and is included: radioactive source the 11, first radiation monitor the 12, second radiation monitor 13 and Temperature sampler 14.Data analysis facilities 4 includes: build-out signal compensation module 41, signal amplifier 42, computing module 43 and display 44, the input of build-out signal compensation module 41 is connected with the second end of signal transmssion line 2, the outfan of build-out signal compensation module 41 is connected with the input of signal amplifier 42, the outfan of signal amplifier 42 is connected with the input of computing module 43, and the outfan of computing module 43 is connected with display 44.
Owing to long range propagation can be brought error by signal, build-out signal compensation module 41 is transferred to signal amplifier after carrying out build-out compensation for the signal that signal transmssion line 2 transmission is come, and it is prior art that length of cable compensates, and no longer describes in detail here.
Signal amplifier 42 is for being transferred to computing module 43 after the signal of build-out signal compensation module output is amplified, computing module 43 launches the intensity of the lonizing radiation reflected that collecting device 1 detects for the signal of signal amplifier 42 output is identified obtain signal, the intensity of the lonizing radiation reflected that collecting device 1 detects is launched according to signal, signal is launched the intensity of the lonizing radiation that collecting device 1 is launched and measures the information of position, calculate and obtain measuring the bulk density recharging layer around position, according to the degree of compaction recharging layer around the true measurement position of the bulk density recharging layer measured around position.
Display 44 is measured position, the bulk density recharging layer measured around position for showing and measures the degree of compaction recharging layer around position, in order to survey crew will appreciate that measure around position the degree of compaction recharging layer.
Optionally, data analysis facilities 4 also includes: memory module and print module, memory module is measured position, the bulk density recharging layer measured around position for storing and measures the degree of compaction recharging layer around position, it is also possible to storage signal launches the data that collecting device 1 collects.Print module is measured position, the bulk density recharging layer measured around position for printing and measures the degree of compaction recharging layer around position.
Launching collecting device 1 due to signal and also include Temperature sampler 14, therefore display 44 is additionally operable to display and measures the temperature around position.Wherein, computing module 43 can also according to the degree of compaction recharging layer around the true measurement position of temperature measured around position, the degree of compaction recharging layer obtained according to temperature survey is contrasted with the degree of compaction recharging layer obtained according to radiation measurement, if it is consistent that the two measures the degree of compaction recharging layer obtained, then may determine that the accuracy of measurement result further.Display 44 is by being shown to survey crew by the temperature measured around position, it is also possible to verify that a layer accuracy for density measurement result is recharged in the inspection of existing employing temperature method.
Last it is noted that various embodiments above is only in order to illustrate the technical solution of the utility model, it is not intended to limit；Although this utility model being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of this utility model.
Claims (5)
1. a soil source heat pump Vertical pendulum tiltmeters recharges degree of compaction test system, it is characterised in that including: signal launches collecting device, signal transmssion line, data analysis facilities and winch；
Described signal is launched collecting device and is connected with the first end of described signal transmssion line and the cable of described winch respectively, and the second end of described signal transmssion line is connected with described data analysis facilities, and described data analysis facilities is also connected with the monitor of described winch；
Described winch is placed on the measurement position in Vertical pendulum tiltmeters for described signal being launched collecting device by described cable, and by described monitor, the information of described measurement position is sent to described data analysis facilities；
Described signal launches collecting device for being generated and transmitted by the lonizing radiation of preset strength, and detects the intensity recharging the lonizing radiation that layer reflects around described measurement position；
Described signal transmssion line is transferred to described data analysis facilities for the intensity that described signal is launched the lonizing radiation reflected that collecting device detects；
Described data analysis facilities launches the intensity of the lonizing radiation that collecting device is launched and the information of described measurement position for the intensity of the lonizing radiation reflected, the described signal detected according to described signal transmitting collecting device, calculate the bulk density recharging layer obtaining around described measurement position, determine the degree of compaction recharging layer around described measurement position according to the bulk density recharging layer around described measurement position.
2. system according to claim 1, it is characterized in that, described signal is launched collecting device and is included: radioactive source, the first radiation monitor and the second radiation monitor, the position of described first radiation monitor is higher than described radioactive source, and the position of described second radiation monitor is higher than described first radiation monitor；
Described radioactive source is for being generated and transmitted by the lonizing radiation of described preset strength；
Described first radiation monitor and the described second radiation monitor detection intensity recharging the lonizing radiation that layer reflects around described measurement position.
3. system according to claim 1 and 2, it is characterized in that, described data analysis facilities includes: build-out signal compensation module, signal amplifier, computing module and display, the described input of build-out signal compensation module is connected with the second end of described signal transmssion line, the described outfan of build-out signal compensation module is connected with the input of described signal amplifier, the outfan of described signal amplifier is connected with the input of described computing module, and the outfan of described computing module is connected with described display；
Described build-out signal compensation module is transferred to described signal amplifier after carrying out build-out compensation for the signal that the transmission of described signal transmssion line is come；
Described signal amplifier is for being transferred to described computing module after the signal of described build-out signal compensation module output is amplified；
Described computing module is identified obtaining described signal for the signal that described signal amplifier is exported and launches the intensity of the lonizing radiation reflected that collecting device detects, launch, according to described signal, the intensity of the lonizing radiation reflected that collecting device detects, described signal launches the intensity of lonizing radiation that collecting device launches and the information of described measurement position, calculate the bulk density recharging layer obtaining around described measurement position, determine the degree of compaction recharging layer around described measurement position according to the bulk density recharging layer around described measurement position；
Described display is for showing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position.
4. system according to claim 3, it is characterised in that described data analysis facilities also includes:
Memory module, for storing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position；
Print module, for printing the bulk density recharging layer around described measurement position, described measurement position and the degree of compaction recharging layer around described measurement position.
5. system according to claim 3, it is characterised in that described signal is launched collecting device and also included:
Temperature sampler, for gathering the temperature around described measurement position；
The temperature that described data line is additionally operable to around by described measurement position is sent to described data analysis facilities；
Described display is additionally operable to show the temperature around described measurement position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130386.4U CN205374768U (en) | 2015-12-30 | 2015-12-30 | Ground -source heat pump pipe laying vertically recharges closely knit degree test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521130386.4U CN205374768U (en) | 2015-12-30 | 2015-12-30 | Ground -source heat pump pipe laying vertically recharges closely knit degree test system |
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| Publication Number | Publication Date |
|---|---|
| CN205374768U true CN205374768U (en) | 2016-07-06 |
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|---|---|---|---|
| CN201521130386.4U Expired - Fee Related CN205374768U (en) | 2015-12-30 | 2015-12-30 | Ground -source heat pump pipe laying vertically recharges closely knit degree test system |
Country Status (1)
| Country | Link |
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| CN (1) | CN205374768U (en) |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20211230 |
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