CN203162555U - Liquid leakage detection device for floor heating pipeline - Google Patents
Liquid leakage detection device for floor heating pipeline Download PDFInfo
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- CN203162555U CN203162555U CN 201320162642 CN201320162642U CN203162555U CN 203162555 U CN203162555 U CN 203162555U CN 201320162642 CN201320162642 CN 201320162642 CN 201320162642 U CN201320162642 U CN 201320162642U CN 203162555 U CN203162555 U CN 203162555U
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Abstract
The utility model belongs to the technical field of floor heating and relates to a liquid leakage detection device for a floor heating pipeline. The device solves the technical problems that the design is not reasonable enough in the prior art and the like. The device comprises a liquid inlet flow detector, a liquid outlet flow detector, a liquid inlet and outlet flow comparator and a flow cutoff valve, wherein the liquid inlet flow detector, the liquid outlet flow detector and the flow cutoff valve are connected with the liquid inlet and outlet flow comparator. The liquid leakage detection device for the floor heating pipeline has the advantages that the liquid leakage detection device is reasonable in design, simple in structure, high in working precision, good in sensitivity, and easy to operate and use, and effectively eliminates initial start interference of a floor heating system. Since an electromagnetic flowmeter is adopted, the sensitivity of the electromagnetic flowmeter cannot be reduced by accumulation of impurities even if the electromagnetic flowmeter is used for a long time, and the working precision is ensured adequately. Since an alarm device is adopted, an alarm signal can be sent out timely to remind a user or maintenance personnel.
Description
Technical field
The utility model belongs to the floor heating technical field, relates to the floor heating pipe detection, especially relates to a kind of floor heating pipeline liquid leak detection apparatus.
Background technique
Ground radiation heating is the heating system of the most comfortable, and indoor surface temperature is even, and room temperature is from bottom to top successively decreased gradually, gives the cool good feel of pin temperature head; Be difficult for causing the vitiated air convection current, the indoor air cleaning; Improve blood circulation, enhance metabolism.In addition, radiator and arm thereof have been cancelled in the floor heating heat supply, increase utilization area, are convenient to finishing and house fitting-up, reduce the corner or spot as yet untouched by a clean-up campaign.The radiant heating mode is than convection current heating system thermal efficiency height, and heat concentrates in the benefited height of human body; Heat loss is little in the transport process; Low temperature ground radiation heat practicable layering, branch family, locellus control, the user can according to circumstances regulate and control, effectively energy saving.Energy-conservation at least about 20% than other heating equipment, can take full advantage of the low-temperature water heating resource or utilize electrovalence policy, reduce operating cost.
Yet floor heating belongs to disguised engineering, easy-maintaining not, and there is the problem of maintenance difference in the ground heating equipment.To select withstand voltage heatproof corrosion-resistant during laying, the high-tech environmental protection tubing that thermal stability is good.Nonetheless, also be difficult to guarantee not occur pipe leakage.When pipe leakage occurring; owing to exist disguised; be difficult in time be found; caused bigger economic loss when discovered; soaked such as finishing, equipment water inlet etc., and unit, the resident family that can bring disaster to periphery usually; not only self economic loss is bigger, also will bear the loss that other people are caused.For this reason, people have carried out long-term exploration, have proposed various solutions.
For example; Chinese patent literature discloses a kind of automatic safety device for the floor heating leakproof [application number: 201220111755.5]; the signal of first flow sensor and second flow transducer are monitored inflow and the water-outlet quantity of ground hot water pipe in real time; central processing control module receives the signal through first analog-digital converter and the conversion of second analog-digital converter; the line program computing of going forward side by side; during local hot water pipe proper functioning; central processing control module control electromagnetism water valve keeps normally open; alarm module does not give the alarm; when being in underground ground hot water pipe and breaking; central processing control module control electromagnetism water valve cuts out the floor heating intake pipe, prevents that the ground hot water pipe from continuing to leak.
Though such scheme can realize the ground hot water pipe when breaking warning and close the floor heating intake pipe, but still exist following problems: 1, occur false alarm easily: in the ground heating system initial start stage, the water of water inlet manifold is warmmer, the water of outfall sewer is colder, even outfall sewer exists owing to lastly enable the air that the back produces because of cooling, and therefore passing in and out the water yield itself just exists volume differences.When practical application, the ground heating system initial start stage is easy to generate misoperation especially, even causes and can't normally use.2, control accuracy is lower: in order to spend the ground heating system initial start stage smoothly, need to set bigger turnover water yield difference, thereby only cause when a large amount of the leakage, could carry out warning and close the floor heating intake pipe.3, long-term use can cause sensitivity to reduce: the water in the ground heating system carries impurity easily in running, and flow transducer can reduce detection sensitivity because of the accumulation of impurity after long-term the use.4, working stability is relatively poor, and energy loss is more, has increased the use burden, in case interruption of power supply occurs, is easy to occur paralysis.
Summary of the invention
The purpose of this utility model is at the problems referred to above, provides a kind of reasonable in design, simple in structure, control accuracy height, the floor heating pipeline liquid leak detection apparatus of good operating stability.
For achieving the above object, the utility model has adopted following technical proposal: this floor heating pipe road liquid leak detection apparatus, be connected on the ground heating system, and it is characterized in that this device comprises:
The feed liquor flow detector is arranged on the feed liquor house steward upward and can gathers feed liquor house steward's real-time feed liquor flux signal;
The fluid flow detector is arranged on the fluid house steward upward and can gathers fluid house steward's real-time fluid flux signal;
Liquid in-out flow comparator can be compared with real-time fluid flux signal advancing real-time feed liquor flux signal, and can export control signal when the difference of real-time feed liquor flux signal and real-time fluid flux signal is met or exceeded the difference setting value;
The flow cut-off valve is arranged on the feed liquor house steward upward and when liquid in-out flow comparator output control signal the feed liquor house steward is in and forbids the feed liquor state;
Described feed liquor flow detector, fluid flow detector and flow cut-off valve all link to each other with liquid in-out flow comparator.
In above-mentioned floor heating pipeline liquid leak detection apparatus, described feed liquor flow detector and fluid flow detector are electromagnetic flowmeter.Electromagnetic flowmeter is the flowmeter that carries out flow measurement according to Faraday law of electromagnetic induction.The advantage of electromagnetic flowmeter is that crushing is minimum, and the measurable flow weight range is big.The ratio of peak rate of flow and minimum discharge is generally more than the 20:1, the industrial caliber wide ranges that is suitable for, maximum can reach 3m, output signal and measured flux are linear, validity is higher, can measure acid, alkali, salt solution, water, sewage, corrosive liquids and the mud of conductivity 〉=1 μ s/cm, the fluid flow of ore pulp.When conductor is made cutting magnetic line movement in magnetic field, in conductor, can produce induced potential, the size of induced potential is done to be directly proportional perpendicular to the speed of magnetic direction motion in magnetic field with middle effect length and the conductor of conductor in magnetic field.In like manner, conductive fluid is done in magnetic field that Vertical direction flows and during the cutting magnetic induction stress line, also can be produced induced potential at the electrode on pipeline both sides.Therefore, even if long-term the use, electromagnetic flowmeter can not cause susceptibility to reduce because of the accumulation of impurity yet, fully guarantees operating accuracy.
In above-mentioned floor heating pipeline liquid leak detection apparatus, also be connected with the warning device that when the difference of real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value, can send alarm signal on the described liquid in-out flow comparator.Owing to be provided with warning device, can in time send alarm signal, remind user or maintenance man.
In above-mentioned floor heating pipeline liquid leak detection apparatus, described real-time feed liquor flux signal and in real time the difference of fluid flux signal meet or exceed the difference setting value refer in the set time section in real time the feed liquor flux signal and in real time the inconsistent rate of fluid flux signal meet or exceed 10%.According to actual conditions, the inconsistent rate of real-time feed liquor flux signal and real-time fluid flux signal can also be set at and meet or exceed 20% in the set time section, is preferably 15%.The set time section is here chosen as required, as endurance 3s-60s, 1min-5min etc.
As another kind of scheme, in above-mentioned floor heating pipeline liquid leak detection apparatus, the difference of described real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 10% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal.According to actual conditions, the percentage that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal can also be set at and meet or exceed 20%, is preferably 15%.
In above-mentioned floor heating pipeline liquid leak detection apparatus, also be connected with the time delay module that the energy delay adjustments is compared to real-time feed liquor flux signal and real-time fluid flux signal after the time again after ground heating system starts on the described liquid in-out flow comparator.Owing to be provided with time delay module, can't normally compare the problem of liquid in-out flow start up period of can solving ground heating system easily.Set time is determined as required, as 1min-10min.Move to steady-working state with ground heating system in principle and be advisable, namely get rid of air among the fluid house steward and the feed liquor among the feed liquor house steward and move to the fluid house steward.
In above-mentioned floor heating pipeline liquid leak detection apparatus, also be connected with for the switch power that links to each other with civil power and emergency power supply on the described liquid in-out flow comparator; Also being connected with on the described liquid in-out flow comparator can be to the control panel of liquid in-out flow comparator input parameter.
Floor heating pipeline liquid leak detection method based on floor heating pipeline liquid leak detection apparatus is characterized in that this method comprises the steps:
A, when ground heating system is in running order, gather feed liquor house steward's real-time feed liquor flux signal and fluid house steward's real-time fluid flux signal respectively;
B, the real-time feed liquor flux signal that will collect and real-time fluid flux signal are compared, and think that when the difference of real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value there is leakage in ground heating system, and output control signal;
C, when output control signal when output, control feed liquor house steward is in and forbids the feed liquor state.
In above-mentioned floor heating pipeline liquid leak detection method, in above-mentioned step B, described real-time feed liquor flux signal and in real time the difference of fluid flux signal meet or exceed the difference setting value refer in the set time section in real time the feed liquor flux signal and in real time the inconsistent rate of fluid flux signal meet or exceed 10%; Perhaps the difference of described real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 10% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal.
According to actual conditions, the inconsistent rate of real-time feed liquor flux signal and real-time fluid flux signal can also be set at and meet or exceed 20% in the set time section, is preferably 15%.The set time section is here chosen as required, as endurance 3s-60s, 1min-5min etc.According to actual conditions, the percentage that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal can also be set at and meet or exceed 20%, is preferably 15%.
In above-mentioned floor heating pipeline liquid leak detection method, described ground heating system starts the back delay adjustments time, begins to gather feed liquor house steward's real-time feed liquor flux signal and fluid house steward's real-time fluid flux signal then; After perhaps described ground heating system starts, the difference of real-time feed liquor flux signal and real-time fluid flux signal is compared with the starting stage setting value earlier, behind ground heating system work set time, again difference and the difference setting value of real-time feed liquor flux signal with real-time fluid flux signal compared, and the starting stage setting value is greater than the difference setting value.
Compared with prior art, the advantage of this floor heating pipe road liquid leak detection apparatus is: reasonable in design, simple in structure, and the operating accuracy height, sensitivity is good, and easy operating uses, and has effectively got rid of the interference of ground heating system initial start stage.Owing to be provided with electromagnetic flowmeter, even if long-term the use, electromagnetic flowmeter can not cause susceptibility to reduce because of the accumulation of impurity yet, fully guarantees operating accuracy.Owing to be provided with warning device, can in time send alarm signal, remind user or maintenance man.
Description of drawings
Fig. 1 is the structured flowchart that the utility model provides.
Among the figure, feed liquor flow detector 1, feed liquor house steward 2, fluid flow detector 3, fluid house steward 4, liquid in-out flow comparator 5, flow cut-off valve 6, warning device 7, time delay module 8, switch power 9, emergency power supply 10.
Embodiment
As shown in Figure 1, this floor heating pipe road liquid leak detection apparatus is connected that this device comprises on the ground heating system: feed liquor flow detector 1 is arranged on the feed liquor house steward 2 and can gathers real-time feed liquor flux signal of the feed liquor house steward 2; Fluid flow detector 3 is arranged on the fluid house steward 4 and can gathers real-time fluid flux signal of the fluid house steward 4; Liquid in-out flow comparator 5 can be compared with real-time fluid flux signal advancing real-time feed liquor flux signal, and can export control signal when the difference of real-time feed liquor flux signal and real-time fluid flux signal is met or exceeded the difference setting value; Flow cut-off valve 6 is arranged on the feed liquor house steward 2 and when liquid in-out flow comparator 5 output control signals feed liquor house steward 2 is in and forbids the feed liquor state.Feed liquor flow detector 1, fluid flow detector 3 and flow cut-off valve 6 all link to each other with liquid in-out flow comparator 5.Also be connected with on the liquid in-out flow comparator 5 for the switch power 9 that links to each other with civil power and emergency power supply 10, also being connected with on the liquid in-out flow comparator 5 can be to the control panel of liquid in-out flow comparator 5 input parameters.
In the utility model, feed liquor flow detector 1 and fluid flow detector 3 are electromagnetic flowmeter.Electromagnetic flowmeter is the flowmeter that carries out flow measurement according to Faraday law of electromagnetic induction.The advantage of electromagnetic flowmeter is that crushing is minimum, and the measurable flow weight range is big.The ratio of peak rate of flow and minimum discharge is generally more than the 20:1, the industrial caliber wide ranges that is suitable for, maximum can reach 3m, output signal and measured flux are linear, validity is higher, can measure acid, alkali, salt solution, water, sewage, corrosive liquids and the mud of conductivity 〉=1 μ s/cm, the fluid flow of ore pulp.When conductor is made cutting magnetic line movement in magnetic field, in conductor, can produce induced potential, the size of induced potential is done to be directly proportional perpendicular to the speed of magnetic direction motion in magnetic field with middle effect length and the conductor of conductor in magnetic field.In like manner, conductive fluid is done in magnetic field that Vertical direction flows and during the cutting magnetic induction stress line, also can be produced induced potential at the electrode on pipeline both sides.Therefore, even if long-term the use, electromagnetic flowmeter can not cause susceptibility to reduce because of the accumulation of impurity yet, fully guarantees operating accuracy.
Also be connected with the warning device 7 that when the difference of real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value, can send alarm signal on the liquid in-out flow comparator 5.Owing to be provided with warning device, can in time send alarm signal, remind user or maintenance man.
In real time the feed liquor flux signal and in real time the difference of fluid flux signal meet or exceed the difference setting value refer in the set time section in real time the feed liquor flux signal and in real time the inconsistent rate of fluid flux signal meet or exceed 10%.According to actual conditions, the inconsistent rate of real-time feed liquor flux signal and real-time fluid flux signal can also be set at and meet or exceed 20% in the set time section, is preferably 15%.The set time section is here chosen as required, as endurance 3s-60s, 1min-5min etc.As another kind of scheme, the difference of feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 10% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal in real time.According to actual conditions, the percentage that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal can also be set at and meet or exceed 20%, is preferably 15%.Above-mentioned two kinds of schemes all can realize the judgement of leakage, select for use according to actual needs.
Also be connected with the time delay module 8 that the energy delay adjustments is compared to real-time feed liquor flux signal and real-time fluid flux signal after the time again after ground heating system starts on the liquid in-out flow comparator 5.Owing to be provided with time delay module, can't normally compare the problem of liquid in-out flow start up period of can solving ground heating system easily.Set time is determined as required, as 1min-10min.Move to steady-working state with ground heating system in principle and be advisable, namely get rid of air among the fluid house steward and the feed liquor among the feed liquor house steward and move to the fluid house steward.Certainly, at initial operating stage, the situation that leaking appears in ground heating system also exists, so the utility model required time of plateau, i.e. set time when having set under normal circumstances the ground heating system operation according to the day-to-day operation situation.
By control panel can import easily comprise in the set time section feed liquor flux signal in real time and in real time the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of inconsistent rate, synchronization of fluid flux signal meet or exceed the parameters such as percentage, set time section, delay adjustments time of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal, thereby easily working state is adjusted.
Based on the floor heating pipeline liquid leak detection method of floor heating pipeline liquid leak detection apparatus, this method comprises the steps:
A, when ground heating system is in running order, gather real-time feed liquor flux signal of the feed liquor house steward 1 and real-time fluid flux signal of the fluid house steward 3 respectively; B, the real-time feed liquor flux signal that will collect and real-time fluid flux signal are compared, and think that when the difference of real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value there is leakage in ground heating system, and output control signal; C, when output control signal when output, control feed liquor house steward 1 is in and forbids the feed liquor state.
In above-mentioned step B, described real-time feed liquor flux signal and in real time the difference of fluid flux signal meet or exceed the difference setting value refer in the set time section in real time the feed liquor flux signal and in real time the inconsistent rate of fluid flux signal meet or exceed 10%; Perhaps the difference of described real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 10% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal.
In the utility model, ground heating system starts the back delay adjustments time, begins to gather real-time feed liquor flux signal of the feed liquor house steward 1 and real-time fluid flux signal of the fluid house steward 3 then; After perhaps described ground heating system starts, the difference of real-time feed liquor flux signal and real-time fluid flux signal is compared with the starting stage setting value earlier, behind ground heating system work set time, again difference and the difference setting value of real-time feed liquor flux signal with real-time fluid flux signal compared.
Because the start up period of ground heating system, the feed-water end that itself exists and the water temperature difference of waterexit end, even if cause not occurring leaking, the difference of feed liquor flux signal and real-time fluid flux signal is also inevitable bigger in real time, so the starting stage setting value is greater than the difference setting value.The starting stage setting value can be set in set time section (the set time section can be that the water heating system system starts back 1min-10min) in real time, and the inconsistent rate of feed liquor flux signal and real-time fluid flux signal meets or exceeds 90%; Perhaps the difference of described real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 70% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as feed liquor flow detector 1, feed liquor house steward 2, fluid flow detector 3, fluid house steward 4, liquid in-out flow comparator 5, flow cut-off valve 6, warning device 7, time delay module 8, switch power 9, emergency power supply 10 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (7)
1. a floor heating pipeline liquid leak detection apparatus is connected on the ground heating system, it is characterized in that this device comprises:
Feed liquor flow detector (1) is arranged on feed liquor house steward (2) upward and can gathers feed liquor house steward's (2) real-time feed liquor flux signal;
Fluid flow detector (3) is arranged on fluid house steward (4) upward and can gathers fluid house steward's (4) real-time fluid flux signal;
Liquid in-out flow comparator (5) can be compared with real-time fluid flux signal advancing real-time feed liquor flux signal, and can export control signal when the difference of real-time feed liquor flux signal and real-time fluid flux signal is met or exceeded the difference setting value;
Flow cut-off valve (6) is arranged on feed liquor house steward (2) upward and when liquid in-out flow comparator (5) output control signal feed liquor house steward (2) is in and forbids the feed liquor state;
Described feed liquor flow detector (1), fluid flow detector (3) and flow cut-off valve (6) all link to each other with liquid in-out flow comparator (5).
2. floor heating pipeline liquid leak detection apparatus according to claim 1 is characterized in that, described feed liquor flow detector (1) and fluid flow detector (3) are electromagnetic flowmeter.
3. floor heating pipeline liquid leak detection apparatus according to claim 1, it is characterized in that, also be connected with the warning device (7) that when the difference of real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value, can send alarm signal on the described liquid in-out flow comparator (5).
4. according to claim 1 or 2 or 3 described floor heating pipeline liquid leak detection apparatus, it is characterized in that, described real-time feed liquor flux signal and in real time the difference of fluid flux signal meet or exceed the difference setting value refer in the set time section in real time the feed liquor flux signal and in real time the inconsistent rate of fluid flux signal meet or exceed 10%.
5. according to claim 1 or 2 or 3 described floor heating pipeline liquid leak detection apparatus, it is characterized in that the difference of described real-time feed liquor flux signal and real-time fluid flux signal meets or exceeds the difference setting value and refers to that the corresponding real-time liquid outlet quantity of the real-time fluid flux signal of synchronization meets or exceeds 10% of real-time feed liquor amount less than the value of the corresponding real-time feed liquor amount of feed liquor flux signal.
6. according to claim 1 or 2 or 3 described floor heating pipeline liquid leak detection apparatus, it is characterized in that, also be connected with the time delay module (8) that the energy delay adjustments is compared to real-time feed liquor flux signal and real-time fluid flux signal after the time again after ground heating system starts on the described liquid in-out flow comparator (5).
7. according to claim 1 or 2 or 3 described floor heating pipeline liquid leak detection apparatus, it is characterized in that, also be connected with on the described liquid in-out flow comparator (5) for the switch power that links to each other with civil power (9) and emergency power supply (10); Also being connected with on the described liquid in-out flow comparator (5) can be to the control panel of liquid in-out flow comparator (5) input parameter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162642 CN203162555U (en) | 2013-04-02 | 2013-04-02 | Liquid leakage detection device for floor heating pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320162642 CN203162555U (en) | 2013-04-02 | 2013-04-02 | Liquid leakage detection device for floor heating pipeline |
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| CN203162555U true CN203162555U (en) | 2013-08-28 |
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| CN 201320162642 Expired - Fee Related CN203162555U (en) | 2013-04-02 | 2013-04-02 | Liquid leakage detection device for floor heating pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225745A (en) * | 2013-04-02 | 2013-07-31 | 浙江澳亚新能源科技有限公司 | Detection device and detection method for liquid leakage of ground heating pipeline |
| CN112942727A (en) * | 2021-02-02 | 2021-06-11 | 李翱 | Real ground warm structure of spreading |
-
2013
- 2013-04-02 CN CN 201320162642 patent/CN203162555U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225745A (en) * | 2013-04-02 | 2013-07-31 | 浙江澳亚新能源科技有限公司 | Detection device and detection method for liquid leakage of ground heating pipeline |
| CN103225745B (en) * | 2013-04-02 | 2015-08-05 | 华星澳亚控股有限公司 | Floor heating pipeline leak of liquid detection device and detecting method thereof |
| CN112942727A (en) * | 2021-02-02 | 2021-06-11 | 李翱 | Real ground warm structure of spreading |
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