CN112460496B

CN112460496B - Warm protection system that leaks that leads to

Info

Publication number: CN112460496B
Application number: CN202011267429.9A
Authority: CN
Inventors: 杨启敖
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2022-08-12
Anticipated expiration: 2040-11-13
Also published as: CN112460496A

Abstract

The invention relates to a heating, ventilation and water leakage protection system which comprises an ultrasonic flow detector and a water leakage protection module. The invention sets a water leakage protection module with a learning mode to specify the total inflow water flow qa0, the total outflow water flow qb0 and the average inflow water temperature in time tc1

Average water outlet temperature

And average indoor temperature

The heating, ventilation and water leakage protection system comprises a heating, ventilation and water leakage protection system, a water inlet correction coefficient alpha and a water outlet correction coefficient beta are respectively calculated on the basis, the initial water inlet flow Qa0 is corrected to be a preset water inlet flow matrix Qa by using the correction coefficients, the initial water outlet flow Qb0 is corrected to be a preset water outlet flow matrix Qb, and the initial matrix is corrected by using actually detected data, so that the heating, ventilation and water leakage protection system can adjust the specific water flow condition in the pipeline in a targeted manner when being used for different heating and ventilation pipelines, and the protection efficiency of the heating, ventilation and water leakage protection system on different pipelines is improved.

Description

Warm protection system that leaks that leads to

Technical Field

The invention relates to the technical field of heating, ventilation and water leakage protection, in particular to a heating, ventilation and water leakage protection system.

Background

In actual life, the water leakage of the heating and ventilating pipe is caused by the fact that water pipes are aged, leaked and broken frequently, on one hand, water resource waste is caused, on the other hand, the water leakage can harm buildings to cause house damage and property loss when the water pipes are serious, and particularly in a residential dense area, the water leakage at one position can cause loss to nearby and lower-layer multiple units, so that inconvenience is brought to daily life of residents. In places such as high-grade hotels, flood disasters can be caused by burst of water pipes, high-grade facilities in the hotels are damaged or seriously, and the situation frequently occurs in real life, so that water leakage monitoring is very needed, hidden danger is avoided and enlarged in an early finding way, and water leakage monitoring equipment is produced at the right moment.

The monitoring facilities that leak among the prior art adopts the expensive advanced parts of high accuracy to constitute more, and is with high costs, is not suitable for ordinary family daily demand, very easily damages moreover, and it is inconvenient to maintain and change, and simultaneously, the domestic detector that leaks among the prior art mostly sets up in the pipeline department of intaking, because aquatic contains impurity, and the detector can't leak in to the pipeline and make accurate judgement.

Chinese patent publication No.: CN108105450A discloses an ultrasonic wave monitoring protector that leaks, belongs to the monitoring utensil technical field that leaks. Including the pipeline that is provided with water inlet and delivery port, the pipeline in be equipped with ultrasonic sensor and electric ball valve, be provided with flow adjustment device in ultrasonic sensor's one side that is close to the water inlet, be provided with the controller that control electric ball valve opened and closed outside the pipeline, ultrasonic sensor and electric ball valve are connected with the controller electricity respectively. Therefore, the ultrasonic water leakage monitoring protector has the following problems:

firstly, although the ultrasonic water leakage monitoring protector can detect whether water leaks from the pipeline, the detection method is too single, and the water leakage condition in the pipeline cannot be comprehensively and accurately detected by aiming at various conditions;

secondly, the ultrasonic water leakage monitoring protector is only provided with a single water leakage judgment standard, and the water leakage judgment standard cannot be learned and intelligently adjusted according to the actual water flow in the pipeline, so that the protection efficiency of the pipeline is low.

Disclosure of Invention

Therefore, the invention provides a heating ventilation water leakage protection system which is used for solving the problem of low heating ventilation pipeline protection efficiency caused by the fact that the water leakage judgment standard cannot be intelligently adjusted according to the actual water flow in a heating ventilation pipeline in the prior art.

In order to achieve the above object, the present invention provides a heating, ventilation and water leakage protection system, which comprises:

the ultrasonic flow detector comprises a water inlet flow detector arranged on a water inlet pipeline of the main pipeline and a water outlet flow detector arranged on a water return pipeline of the main pipeline, and each ultrasonic flow detector respectively detects the water inlet flow/water outlet flow in the corresponding pipeline by using ultrasonic waves;

the water leakage protection module is arranged outside the pipeline, is respectively connected with the water inlet flow detector and the water outlet flow detector, and is used for judging the water leakage state in the pipeline according to the water inlet flow/the water outlet flow measured by the water inlet flow detector and the water outlet flow detector and the relation between the water inlet flow and the water outlet flow;

the water leakage protection module is also externally connected with temperature detectors, and each temperature detector is respectively arranged in the water inlet pipeline, the water outlet pipeline and the house wall and is used for respectively detecting the water temperature Ta in the water inlet pipeline, the water temperature Tb in the water outlet pipeline and the indoor temperature Tc in the house wall;

the water leakage protection module is provided with an initial water inlet flow matrix Qa0, an initial water outlet flow matrix Qb0 and a preset flow difference matrix Q0; for the initial influent water flow matrices Qa0, Qa0(Qa01, Qa02, Qa03, Qa04), where Qa01 is the first initial influent water flow, Qa02 is the second initial influent water flow, Qa03 is the third initial influent water flow, Qa04 is the fourth initial influent water flow, and the flow values of the initial influent water flows are gradually increased in order; for the initial effluent flow rate matrixes Qb0 and Qb0(Qb01, Qb02, Qb03 and Qb04), wherein Qb01 is the first initial effluent flow rate, Qb02 is the second initial effluent flow rate, Qb03 is the third initial effluent flow rate, Qb04 is the fourth initial effluent flow rate, and the flow rate values of the initial effluent flow rates are gradually increased in sequence; for a preset flow difference matrix Q0(Q1, Q2, Q3, Q4), where Q1 is a first preset flow difference, Q2 is a second preset flow difference, Q3 is a third preset flow difference, Q4 is a fourth preset flow difference, and the numerical values of the preset flow differences gradually increase in order of groups;

a timer is arranged in the water leakage protection module and used for recording and managing the flowing time of water, a preset detection period matrix tc0 and tc0(tc1, tc2 and tc3) is arranged in the water leakage protection module, wherein tc1 is the detection time length of the water leakage protection module in a learning mode, tc2 is the detection period of a detection pipeline of the water leakage protection module, and tc3 is the period of the water leakage protection module entering the next learning mode;

the water leakage protection module is also provided with a preset water inlet detection time matrix ta0 and a preset water outlet detection time matrix tb 0; for the preset intake water detection time matrix ta0, ta0(ta1, ta2, ta3, ta4), wherein ta1 is a first preset intake water detection time, ta2 is a second preset intake water detection time, ta3 is a third preset intake water detection time, ta4 is a fourth preset intake water detection time, and time values of the preset intake water detection times are gradually increased in sequence; for the preset effluent detection time matrixes tb0, tb0(tb1, tb2, tb3, tb4), wherein tb1 is the first preset effluent detection time, tb2 is the second preset effluent detection time, tb3 is the third preset effluent detection time, tb4 is the fourth preset effluent detection time, and the time values of the preset effluent detection times are gradually increased in sequence;

when the heating, ventilation and water leakage protection system is operated for the first time, the water leakage protection module enters a learning mode, a timer starts to time, the water leakage protection module respectively detects and counts the water inlet flow, the water outlet flow, the water inlet temperature, the water outlet temperature and the indoor temperature in a pipeline, when the timing time reaches tc1, the water leakage protection module counts the total water inlet flow Qa0 and the total water outlet flow Qb0 within tc1 time, calculates the average water inlet temperature, the average water outlet temperature and the average indoor temperature within tc1 time, calculates a water inlet flow correction coefficient alpha and a water outlet flow correction coefficient beta according to the parameters, wherein, for the water inlet flow correction coefficient alpha, for the water outlet flow correction coefficient beta, after calculating the flow correction coefficient, the water leakage protection module corrects an initial water inlet flow matrix Qa0 and an initial water outlet flow matrix Qb0 into a preset water inlet flow matrix Qa (Qa1, qa2, Qa3, Qa4) and a preset outlet flow matrix Qb (Qb1, Qb2, Qb3, Qb 4); for Qai, i is 1, 2, 3, 4, Qai is Qa0i a; for Qbj, j-1, 2, 3, 4, Qbj-Qb 0j β;

after the correction is completed, the water leakage protection module compares Qa0 with the values in the Qa matrix, and compares Qb0 with the values in the Qb matrix:

when Qa0 is less than or equal to Qa1, the water leakage protection module sets the water inlet detection time to ta 1;

when Qa1 is more than Qa0 and less than or equal to Qa2, the water leakage protection module sets the water inlet detection time to ta 2;

when Qa2 is more than Qa0 and less than or equal to Qa3, the water leakage protection module sets the water inlet detection time to ta 3;

when Qa3 is more than Qa0 and less than or equal to Qa4, the water leakage protection module sets the water inlet detection time to ta 4;

when Qb0 is less than or equal to Qb1, the water leakage protection module sets the water outlet detection time to be tb 1;

when Qb1 is more than or equal to Qb0 and less than or equal to Qb2, the water leakage protection module sets the water outlet detection time to be tb 2;

when Qb2 is more than or equal to Qb0 and less than or equal to Qb3, the water leakage protection module sets the water outlet detection time to be tb 3;

when Qb3 is more than or equal to Qb0 and less than or equal to Qb4, the water leakage protection module sets the water outlet detection time to be tb 4;

after setting is finished, the water leakage protection module enters a detection mode; when the water leakage detection module performs water leakage detection on a pipeline, the water inflow detector can detect the water inflow qa in the water inflow pipeline within the specified water inflow detection time tai, the water outflow detector can detect the water outflow qb in the water outflow pipeline within the specified water outflow detection time tbj, after the detection is completed, the water leakage detection module calculates a pipeline flow difference value Q, Q is | qa-qb |, and after the calculation is completed, the water leakage detection module compares Q with each numerical value in the preset flow difference matrix Q0:

when Q is less than or equal to Q1, the water leakage protection module judges that no water leakage occurs in the pipeline;

when Q is more than Q1 and less than or equal to Q2, the water leakage protection module judges that the pipeline has micro water leakage;

when Q2 is more than Q and less than or equal to Q3, the water leakage protection module judges that moderate water leakage occurs in the pipeline, closes the valve and gives out a moderate water leakage alarm;

when Q is more than Q3 and less than or equal to Q4, the water leakage protection module judges that serious water leakage occurs in the pipeline, closes the valve and gives out a serious water leakage alarm;

when Q is larger than Q4, the water leakage protection module judges that the pipe is burst, closes the valve and gives out a pipe burst alarm;

after the detection is finished, a timer is newly built for timing, and when the recording time of the timer reaches tc2, the water leakage protection module carries out water leakage detection again;

when the water leakage protection module enters a detection mode, a timer is newly set to time, and enters a learning mode again when the recording time reaches tc3, the Qa matrix is set as an initial water inlet flow matrix, and the Qb matrix is set as an initial water outlet flow matrix to correct each initial matrix again.

Further, the single ultrasonic flow detector includes:

the connecting pipe is arranged in the pipeline and used for conveying water in the pipeline;

the ultrasonic detector is arranged outside the pipeline, is respectively connected with the connecting pipe and the water leakage protection module, and is used for detecting the water flow in the connecting pipe and transmitting a detection value to the water leakage protection module;

the reflecting support is arranged in the connecting pipe, at least two reflecting plates are arranged on the reflecting support, and the reflecting plates and the direction of water flow in the connecting pipe form a certain included angle and are used for reflecting ultrasonic waves emitted by the ultrasonic detector;

and the electric ball valve is arranged at the water inlet of the connecting pipe, is connected with the ultrasonic detector and is used for controlling the flow of water in the pipeline.

Furthermore, the surface of the reflecting plate is provided with a reflecting sheet, and the reflecting sheet is three sections of integrally connected arc-shaped sheets and is used for reflecting the ultrasonic waves to the designated direction.

Furthermore, the ultrasonic detector is externally connected with at least two ultrasonic probes, and the ultrasonic probes are respectively arranged in the connecting pipe and used for transmitting and receiving ultrasonic waves so as to accurately detect the water flow in the connecting pipe.

Furthermore, the connecting pipe is a cylindrical pipe, two detection pipes are arranged above the connecting pipe and used for respectively loading the ultrasonic probes, a fixing pipe is arranged between the two detection pipes, and a fixing screw is arranged in the fixing pipe and used for fixing the reflection bracket at a specified position in the connecting pipe; and a control pipe is arranged at the upper end of the water inlet of the connecting pipe and used for loading the electric ball valve.

Furthermore, each detection tube is also internally provided with an O-shaped ring with a corresponding size, the O-shaped rings are arranged in the detection tubes and are respectively positioned below the ultrasonic probes so as to respectively seal gaps between the ultrasonic probes and the detection tubes; the fixing pipe is internally provided with an O-shaped ring with a corresponding size, the O-shaped ring is arranged below the fixing screw and used for sealing a gap between the fixing screw and the fixing pipe so as to prevent water in the connecting pipe from leaking into the fixing pipe.

Furthermore, the end part of the detection pipe is provided with a pressing cap used for fixing each ultrasonic probe at a designated position.

Furthermore, a gasket is arranged below the pressing cap to prevent the pressing cap from damaging the ultrasonic probes.

Further, the reflection support further comprises:

the fixing hole is a through hole formed above the reflecting bracket and is used for connecting and fixing the reflecting bracket and the connecting pipe through a fixing screw;

at least two fixing grooves which are respectively arranged at the connecting grooves at the top end of the edge of the reflecting bracket and are used for connecting the ultrasonic probe and fixing the ultrasonic probe at a specified position;

the end parts of the first connecting rods are connected with the reflecting plate and used for fixing the reflecting plate at a specified position;

and the at least four second connecting rods are respectively arranged at the lower parts of two sides of the reflecting support and are used for positioning the reflecting support and the reflecting plate.

Further, the electric ball valve is connected with the ultrasonic detector to control the opening and closing of the pipeline according to the flow rate measured by the ultrasonic detector, and comprises:

the actuator is arranged at the upper end of the control pipe, is connected with the ultrasonic detector and is used for controlling the opening and closing of the electric ball valve;

a valve stem disposed within the control tube and coupled to the actuator;

the ball valve is arranged at the water inlet of the water leakage protection pipe and is connected with the valve rod;

at least two valve seats are respectively arranged on two sides of the ball valve and used for fixing the ball valve;

the water inlet is arranged at the water inlet of the water leakage protection pipe and is used for fixing the valve cover of the valve seat.

Compared with the prior art, the invention has the advantages that the water leakage protection module with a learning mode is arranged, the water inlet correction coefficient alpha and the water outlet correction coefficient beta are respectively calculated on the basis of the total water inlet flow Qa0, the total water outlet flow Qb0, the average water inlet temperature, the average water outlet temperature and the average indoor temperature in the specified time tc1, the initial water inlet flow Qa0 is corrected into a preset water inlet flow matrix Qa by using the correction coefficients, the initial water outlet flow Qb0 is corrected into a preset water outlet flow matrix Qb, the corresponding water inlet detection time ti is selected according to the comparison result of the Qa0 and the parameters in the Qa matrix, the corresponding water outlet monitoring time tj is selected according to the comparison result of the parameters in the Qb0 and the Qb matrix, the water inlet flow Qa and the water outlet flow Qb of the pipeline in the corresponding detection time are detected by taking the tj and the tj as the reference, the judgment of the water inlet flow Qa and outlet flow Qb state in the pipeline in the corresponding detection time is completed according to the difference value Q between the Qa and the water leakage state, by correcting the initial matrix by using actually detected data, the heating, ventilation and water leakage protection system can adjust the specific water flow condition in the pipeline in a targeted manner when being used for different heating and ventilation pipelines, so that the protection efficiency of the heating, ventilation and water leakage protection system on different pipelines is improved.

Further, a learning period t3 is also arranged in the timer, when the system enters the protection mode, the timer starts timing, and when the recording time reaches t3, the system enters a new learning mode from the new time, the existing preset matrix is set as an initial matrix, the new initial matrix is further corrected, and through a continuous learning-correcting process, the system can be more suitable for the pipeline to which the system belongs, so that the protection efficiency of the heating, ventilation and water leakage protection system on different pipelines is further improved.

Furthermore, a detection period t2 is also set in the timer, and by setting the system to be in a periodic detection mode, the running power consumption of the system can be reduced while the efficiency of the system for protecting the pipeline is ensured, so that the service life of the heating, ventilation and water leakage protection system is prolonged.

Furthermore, the heating, ventilation and water leakage protection system can accurately measure the specific water flow in the household pipeline by measuring the water flow in the pipeline by using the ultrasonic detector, and the water meter device reflects the ultrasonic waves sent by the flow detector to an appointed position by using the reflecting plate, so that the detection precision of the ultrasonic water meter is improved; meanwhile, the electric ball valve is arranged at the connecting pipe, so that the pipeline can be closed in time when water leakage occurs in the pipeline, water resource loss caused by pipeline leakage is prevented, and the service efficiency of the heating ventilation water leakage protection system is improved.

Furthermore, still be equipped with two at least sense tubes on the connecting pipe for place ultrasonic transducer respectively, through placing each ultrasonic transducer in the assigned position, can make ultrasonic detector further carry out accurate detection to pipeline intermediate water flow, improved ultrasonic flow detector's detection precision.

Particularly, the control pipe is further arranged on the connecting pipe and used for loading the electric ball valve, so that the electric ball valve can be fixed at a specified position, and when the electric ball valve is closed, a pipeline can be better sealed, and the protection efficiency of the heating, ventilation and water leakage protection system is further improved.

Further, a fixing pipe is arranged between the two detection pipes, the fixing screw is installed in the fixing pipe, the fixing screw is connected with the reflecting support inside the connecting pipe, and therefore the reflecting support is fixed at the designated position.

In particular, the O-shaped rings with corresponding sizes are arranged in the connecting pipe and the fixing pipe, so that water in the connecting pipe cannot leak out of the pipeline through the detecting pipe or the fixing pipe, pipeline leakage occurs, and the sealing performance of the heating ventilation water leakage protection system is improved.

Furthermore, each detection tube top still is equipped with presses the cap, through will pressing the cap to screw in order to fix each ultrasonic transducer at the assigned position, like this, ultrasonic transducer can not receive rivers influence and change the position, makes the discharge in the detection pipeline that ultrasonic flow detector can be more accurate.

In particular, a gasket is arranged below the pressing cap, so that the pressing cap cannot damage the ultrasonic probes in the screwing process, the service life of each ultrasonic probe is prolonged, and the service life of the heating, ventilation and water leakage protection system is prolonged.

Furthermore, be equipped with the reflection support in the connecting pipe, the reflection support is connected with the reflecting plate is firm, like this, the reflecting plate can be fixed in the assigned position and with ultrasonic reflection to assigned direction, has further improved ultrasonic flow detector's detection precision.

Furthermore, an actuator in the electric ball valve is connected with the water leakage protection module, when the water leakage protection module judges that water leakage occurs in the pipeline, the water leakage protection module can directly send a signal to the actuator, so that the controller controls the spherical valve to be closed, the pipeline is protected, and the protection efficiency of the heating, ventilation and water leakage protection system is improved.

In particular, the valve seats are arranged on two sides of the ball valve, so that when the electric ball valve is used, the valve seats can enable the ball valve to be fixed at a specified position, and further protection on a pipeline is achieved.

Drawings

Fig. 1 is a block diagram of a heating, ventilation and water leakage protection system according to the present invention;

FIG. 2 is an exploded view of the ultrasonic flow detector of the present invention;

FIG. 3 is a schematic view of the reflection mount according to the present invention;

FIG. 4 is a schematic structural view of a multi-segment cambered-surface metal sheet reflector according to the present invention.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example one

Fig. 1 is a block diagram of a heating, ventilation and water leakage protection system according to the present invention, which includes an ultrasonic flow detector and a water leakage protection module. The ultrasonic flow detector comprises a water inlet flow detector arranged on a water inlet pipeline of the main pipeline and a water outlet flow detector arranged on a water return pipeline of the main pipeline, and each ultrasonic flow detector respectively detects the water inlet flow/water outlet flow in the corresponding pipeline by using ultrasonic waves. The water leakage protection module is arranged outside the pipeline, is respectively connected with the water inlet flow detector and the water outlet flow detector, and is used for judging the water leakage state in the pipeline according to the water inlet flow/water outlet flow measured by the water inlet flow detector and the water outlet flow detector and the relation between the water inlet flow and the water outlet flow.

Particularly, the water leakage protection module is also externally connected with temperature detectors, and each temperature detector is respectively arranged in the water inlet pipeline, the water outlet pipeline and the house wall and is used for respectively detecting the water temperature Ta in the water inlet pipeline, the water temperature Tb in the water outlet pipeline and the indoor temperature Tc in the house wall.

Specifically, the water leakage protection module is provided with an initial inflow water flow matrix Qa0, an initial outflow water flow matrix Qb0 and a preset flow difference matrix Q0; for the initial influent water flow matrices Qa0, Qa0(Qa01, Qa02, Qa03, Qa04), where Qa01 is the first initial influent water flow, Qa02 is the second initial influent water flow, Qa03 is the third initial influent water flow, Qa04 is the fourth initial influent water flow, and the flow values of the initial influent water flows are gradually increased in order; for the initial effluent flow rate matrixes Qb0 and Qb0(Qb01, Qb02, Qb03 and Qb04), wherein Qb01 is the first initial effluent flow rate, Qb02 is the second initial effluent flow rate, Qb03 is the third initial effluent flow rate, Qb04 is the fourth initial effluent flow rate, and the flow rate values of the initial effluent flow rates are gradually increased in sequence; for the preset flow rate difference matrix Q0(Q1, Q2, Q3, Q4), where Q1 is a first preset flow rate difference, Q2 is a second preset flow rate difference, Q3 is a third preset flow rate difference, and Q4 is a fourth preset flow rate difference, values of the preset flow rate differences gradually increase in the same group.

Specifically, a timer is arranged in the water leakage protection module and used for recording and managing the flowing time of water, a preset detection period matrix tc0, tc0(tc1, tc2, tc3) is arranged in the water leakage protection module, wherein tc1 is the detection time length of the water leakage protection module in the learning mode, tc2 is the detection period of a detection pipeline of the water leakage protection module, and tc3 is the period of the water leakage protection module entering the next learning mode.

Specifically, the water leakage protection module is further provided with a preset water inlet detection time matrix ta0 and a preset water outlet detection time matrix tb 0; for the preset intake water detection time matrix ta0, ta0(ta1, ta2, ta3, ta4), wherein ta1 is a first preset intake water detection time, ta2 is a second preset intake water detection time, ta3 is a third preset intake water detection time, ta4 is a fourth preset intake water detection time, and time values of the preset intake water detection times are gradually increased in sequence; for the preset effluent detection time matrixes tb0, tb0(tb1, tb2, tb3, tb4), wherein tb1 is the first preset effluent detection time, tb2 is the second preset effluent detection time, tb3 is the third preset effluent detection time, tb4 is the fourth preset effluent detection time, and the time values of the preset effluent detection times are gradually increased in sequence.

When the heating, ventilation and water leakage protection system is operated for the first time, the water leakage protection module enters a learning mode, a timer starts to time, the water leakage protection module respectively detects and counts the water inlet flow, the water outlet flow, the water inlet temperature, the water outlet temperature and the indoor temperature in a pipeline, when the timing time reaches tc1, the water leakage protection module counts the total water inlet flow Qa0 and the total water outlet flow Qb0 within tc1 time, calculates the average water inlet temperature, the average water outlet temperature and the average indoor temperature within tc1 time, calculates a water inlet flow correction coefficient alpha and a water outlet flow correction coefficient beta according to the parameters, wherein, for the water inlet flow correction coefficient alpha, for the water outlet flow correction coefficient beta, after calculating the flow correction coefficient, the water leakage protection module corrects an initial water inlet flow matrix Qa0 and an initial water outlet flow matrix Qb0 into a preset water inlet flow matrix Qa (Qa1, qa2, Qa3, Qa4) and a preset outlet flow matrix Qb (Qb1, Qb2, Qb3, Qb 4); for Qai, i is 1, 2, 3, 4, Qai is Qa0i a; for Qbj, j is 1, 2, 3, 4, Qbj is Qb0 j.

when Qb3 < Qb0 is not less than Qb4, the water leakage protection module sets the water outlet detection time to be tb 4.

After the setting is finished, the water leakage protection module enters a detection mode; when the water leakage detection module performs water leakage detection on a pipeline, the water inflow detector can detect the water inflow qa in the water inflow pipeline within the specified water inflow detection time tai, the water outflow detector can detect the water outflow qb in the water outflow pipeline within the specified water outflow detection time tbj, after the detection is completed, the water leakage detection module calculates a pipeline flow difference value Q, Q is | qa-qb |, and after the calculation is completed, the water leakage detection module compares Q with each numerical value in the preset flow difference matrix Q0:

and after the detection is finished, a timer is newly established for timing, and when the recording time of the timer reaches tc2, the water leakage protection module carries out water leakage detection again.

Fig. 2 is an exploded view of the ultrasonic flow detector according to the present invention, including; a connecting pipe 1, an ultrasonic probe 2, an ultrasonic detector (not shown in the figure), a reflecting bracket 3 and an electric ball valve 4; the connecting pipe 1 is arranged on a pipeline and used for conveying water in the pipeline; the ultrasonic probe 2 is arranged in the connecting pipe 1 and used for detecting the water flow in the connecting pipe 1 and transmitting the measured flow value to the ultrasonic detector; the reflection bracket 3 is arranged inside the connecting pipe 1 and used for reflecting the ultrasonic waves emitted by the ultrasonic probe 2 to a specified position; the electric ball valve 4 is arranged at an inlet of the connecting pipe 1, is connected with the water leakage protection module and is closed to protect the pipeline when water leakage occurs to the pipeline.

When the ultrasonic flow detector is used, the connecting pipe 1 is installed in the pipeline, water starts to flow after the installation is finished, and the ultrasonic flow detector is started, so that the ultrasonic probe 2 detects the water flow in the pipeline. When the ultrasonic detector detects the water flow in the connecting pipe 1, the ultrasonic probe 2 can emit ultrasonic waves at a specified position in the connecting pipe, the ultrasonic waves reach the specified position after being reflected by the reflecting support 3, and the ultrasonic detector calculates the water flow in the connecting pipe 1 by counting the time length of the ultrasonic wave emitted and received by the ultrasonic probe; when the water leakage protection module judges that water leakage or pipe explosion occurs in the pipeline, the water leakage protection module can control the electric ball valve 4 to be closed so as to protect the pipeline.

Referring to fig. 2, the connection pipe 1 of the present invention is a metal pipe, two detection pipes are disposed above the metal pipe, a fixed pipe is disposed between the two detection pipes, and a control pipe is disposed above an inlet of the connection pipe 1. The connection pipe 1 includes: an O-ring 11, a set screw 12 and a press cap 13. The O-rings 11 are respectively disposed inside the detection tube and the fixing tube, and are respectively in contact with the ultrasonic probe and the fixing screw 12, so as to maintain the inside of the connection tube 1 in a sealed state. The fixing screw 12 is provided in the fixing tube to fix the reflection bracket 3 at a designated position. The pressing cap 13 is arranged at the upper end of the detection tube and used for fixing the ultrasonic probe at a specified position. When the connecting pipe 1 is installed, the reflecting support 3 is firstly placed into the connecting pipe 1, the O-shaped rings 11 are respectively placed inside the detecting pipe and the fixing pipe, the reflecting support 3 is fixed at a designated position through the fixing screws 12, after the fixing is completed, the ultrasonic probes are respectively placed inside the detecting pipes, and after the fixing is completed, the pressing caps 13 are installed at the top ends of the detecting pipes to fix the ultrasonic probes. It can be understood that the connection manner of the connection tube 1, the detection tube and the fixing tube may be welding, integral connection or other connection manners, as long as the connection between the detection tube and the fixing tube and the connection tube 1 is satisfied.

Specifically, the O-rings 11 are provided inside the detection tubes and the fixing tube, respectively, and are in contact with the ultrasonic probe 2 and the fixing screw 12, respectively, to maintain the inside of the connection tube 1 hermetically. When the ultrasonic flow detector is installed, the O-shaped rings 11 with corresponding sizes are firstly respectively placed into the detection pipe and the fixing pipe, the ultrasonic probes and the fixing screws 12 are respectively installed after the placement is completed, and the O-shaped rings 11 are respectively in close contact with the ultrasonic probes 2 and the fixing screws 12 to seal the detection pipe and the fixing pipe, so that water leakage in the connecting pipe 1 is prevented.

Specifically, the fixing screw 12 is provided inside the fixing tube to fix the reflection bracket 3 at a designated position. When the reflection bracket 3 is installed, the reflection bracket 3 is firstly placed at a designated position in the connecting pipe 1, the fixing screw 12 is arranged in the fixing pipe and screwed, and the fixing screw 12 passes through the fixing pipe and is connected with the reflection bracket 3, so that the reflection bracket 3 is fixed at the designated position. It is understood that the type and material of the fixing screw 12 are not limited in this embodiment, as long as the fixing screw 12 can reach its designated working state.

Specifically, the pressing cap 13 is two nuts respectively disposed at the upper end of the detection tube for fixing the ultrasonic probe at a specified position, and a gasket 131 is disposed between the pressing cap 13 and the ultrasonic probe for preventing the pressing cap 13 from damaging the ultrasonic probe during the screwing process. When the ultrasonic probe 2 is installed, the ultrasonic probe is placed in the detection tube, after the ultrasonic probe is placed, the gasket 131 is placed at the upper end of the ultrasonic probe, the pressing cap 13 is installed, and the ultrasonic probe is fixed at a specified position by screwing the pressing cap 13. It is understood that the gasket 131 may be a rubber gasket, an asbestos-free rubber gasket, a flexible graphite metal composite gasket, a teflon-coated gasket, or other types of non-metallic gaskets, as long as the gasket 131 can prevent the pressing cap 13 from damaging the ultrasonic probe.

Referring to fig. 2, the ultrasonic probe 2 of the present invention is two probes connected to the ultrasonic detector, and the two probes are respectively disposed inside the detection tube for transmitting and receiving ultrasonic waves, detecting water flow inside the connection tube 1, and transmitting the detected data to the ultrasonic detector. When the ultrasonic detector runs, the two ultrasonic probes 2 can respectively transmit and receive ultrasonic waves, the time from the transmission of the ultrasonic waves to the reception of the ultrasonic waves is converted into data to be sent to the ultrasonic detector, the ultrasonic detector can calculate the real-time flow rate of water in the connecting pipe 1 according to the transmission time of the ultrasonic waves and calculate the water flow rate in the connecting pipe 1 according to the sectional area in the connecting pipe 1, and after the calculation is completed, the ultrasonic detector can record the flow rate and display the flow rate at a designated position for a user to observe. It is understood that the connection mode of the ultrasonic detector and the ultrasonic probe 2 may be a wired connection, a wireless connection or other connection modes as long as the ultrasonic probe 2 can transmit the measured data to the ultrasonic detector.

Referring to fig. 2, the electric ball valve 4 of the present invention is disposed at the water inlet of the connection pipe 1 and connected to the control pipe, and includes an actuator 41, a valve rod 42, a ball valve 43, a valve seat 44 and a valve cover 45. The actuator 41 is arranged at the top end of the control pipe and is used for controlling the electric ball valve 4; the valve rod 42 is arranged in the control pipe to connect the actuator 41 and the ball valve 43, the ball valve 43 is arranged in the connecting pipe 1 to control the opening and closing of the pipeline in the connecting pipe 1, the valve seats 44 are respectively arranged on two sides of the ball valve 43 to fix the ball valve 43 at a designated position, and the valve cover 45 is arranged at the water inlet of the connecting pipe 1 and connected with the water inlet to fix the valve seat 44 at the designated position.

When the pipeline carries water, the ultrasonic detector can measure the water flow in the connecting pipe 1 and convey the flow to the water leakage protection module, when the water leakage protection module judges that water leaks in the pipeline, the water leakage protection module can send a signal to the actuator 41, the actuator 41 can start to operate, the valve rod 42 is controlled to rotate, the valve rod 42 drives the spherical valve 43 to rotate and seals the inside of the connecting pipe 1, and therefore the pipeline is prevented from continuously leaking water.

Specifically, the actuator 41 is disposed at an upper end of the control pipe and connected thereto, and is connected at a bottom thereof to the valve stem 42 for controlling rotation thereof. When the water leakage protection module determines that water leaks from the pipeline, the water leakage protection module sends a control signal to the actuator 41 to control the valve rod 42 to rotate. It is understood that the connection mode of the actuator 41 and the detection tube may be a bolt connection, an integral connection or other connection modes, as long as the actuator 41 can be fixed on the control tube.

Specifically, the valve stem 42 is a cylindrical rod vertically disposed inside the control pipe and horizontally rotatable therein for connecting the controller 21 and the ball valve 43. When the actuator 41 starts to operate, it will control the valve rod 42 to rotate, and when the valve rod 42 rotates, it will drive the ball valve 43 to rotate, so as to protect the pipeline. It is understood that the material of the valve stem 42 is not particularly limited in this embodiment, as long as the valve stem 42 can achieve a given strength.

Specifically, the ball valve 43 is a ball valve with a through hole, which is disposed in the connection pipe 1 and below the control pipe, and is connected to the valve rod 42 to control the connection pipe 1 to open and close to protect the pipeline. When the ball valve 43 is opened, the water in the pipeline enters the connecting pipe 1 through the through hole of the ball valve 43 and enters the household through the water leakage protection pipe 1; when the water leakage protection module determines that water leaks from the pipeline, the actuator 41 controls the valve rod 42 to drive the ball valve 43 to rotate, so that the direction of the through hole in the ball valve 43 is perpendicular to the direction of the pipeline to close the ball valve 43, and water cannot pass through the ball valve 43 at this time, thereby protecting the pipeline. It is understood that the connection manner of the ball valve 43 and the valve rod 42 may be a threaded connection, a welding connection, an integral connection or other connection manners, as long as the valve rod 42 can drive the ball valve 43 to rotate when rotating.

Specifically, the valve seats 44 are respectively disposed on both sides of the ball valve 43 to fix the ball valve 43 at a predetermined position. When the valve rod 42 rotates the ball valve 43, the valve seat 44 restrains the ball valve 43 and rotates the ball valve 43 at a specified position, thereby preventing the valve rod 42 from being damaged due to the displacement of the valve seat 23 caused by the water flow. It is understood that the material of the valve seat 44 may be EPDM, NBR, NR, PTFE, PEEK, PFA, SS315, STELLITE or other types of metallic or non-metallic materials, as long as the valve seat 44 is satisfied to enable the ball valve 43 to be fixed in a given position.

Specifically, the valve cover 45 is a nut having a through hole at the center, and is disposed at the water inlet of the connection pipe 1 and connected to the connection pipe 1 to fix the valve seat 44 at a predetermined position. When the electric ball valve 4 is installed, the valve cover 45 is installed at the water inlet of the connecting pipe 1, and after the installation is completed, the valve cover 45 restrains the valve seat 44, so that the valve seat 44 is fixed at a specified position and the valve seat 44 restrains the ball valve 43. And after the installation is finished, the valve cover 45 is connected with a water outlet of the pipeline so as to install the single ultrasonic water leakage protector in the pipeline. It is understood that the material of the valve cover 45 is not particularly limited in this embodiment, as long as the valve cover 45 can achieve its designated operating state.

Referring to fig. 3, the reflection bracket 3 of the present invention is a hollow cylindrical tube, which is disposed inside the connection tube 1 and is fixedly connected to the reflection plate 31 for fixing the reflection plate 31 at a designated position; comprises a reflecting plate 31, a fixing hole 32, a fixing groove 33, a first fixing rod 34 and a second fixing rod 35; the reflecting plates 31 are respectively arranged at two ends of the reflecting bracket 3, and are used for reflecting the ultrasonic waves emitted by the ultrasonic emission probe 21 to a specified position; the fixing hole 32 is formed above the reflecting bracket 3 and is used for matching with the fixing screw 12 and fixing the reflecting bracket 3 at a specified position; the fixing grooves 33 are respectively arranged at the upper end edges of two sides of the reflecting bracket 3, and are used for fixing the ultrasonic probes at specified positions respectively; the first fixing rods 34 are arranged at two sides of the reflecting bracket 3 and fixedly connected with the reflecting plate 31 to fix the reflecting plate 31; the second fixing bars 35 are disposed at both sides of the reflection bracket 3, and further fix the reflection plate 31 while fixing the reflection bracket 3.

Specifically, the reflecting plate 31 is disposed inside the connecting pipe 1, connected to the reflecting bracket 3, and forms an included angle of 45 ° with the water flow direction, and a reflecting sheet is disposed on the surface of the reflecting plate 31 to reflect the scattered ultrasonic waves to a specific direction. When the ultrasonic detector measures the flow of water in the pipeline, the ultrasonic transmitting probe 21 can transmit ultrasonic waves, the ultrasonic waves are transmitted to the ultrasonic receiving probe 22 after being reflected by the reflecting plate 31, the ultrasonic detector can record the transmission time of the ultrasonic waves, the flow velocity of the water in the pipeline is calculated according to the principle that the transmission velocity of the ultrasonic waves is different under the same medium and different flow velocities, the flow of the water in the pipeline is obtained according to the cross section of the pipeline, and the flow is monitored to judge whether water leaks in the pipeline. It is understood that the material of the reflective plate 31 is not limited in this embodiment, and the reflective sheet on the surface can be copper sheet, aluminum sheet, iron sheet, tempered glass, polyethylene or other kinds of metal or nonmetal material, as long as the reflective plate can reflect the ultrasonic wave emitted by the ultrasonic detector.

Specifically, the fixing hole 32 is a cylindrical through hole opened above the reflection bracket 3 to fix the reflection bracket 3 at a designated position by a fixing screw 12. When the reflection bracket 3 is installed, the reflection bracket 3 is installed inside the connection pipe 1, the fixing pipe is aligned with the fixing hole 32, and after the alignment, the fixing screw 12 is screwed into the fixing pipe and penetrates through the fixing hole 32, so that the reflection bracket 3 and the fixing pipe are relatively fixed. It is understood that the size of the fixing hole 32 is not particularly limited in this embodiment, as long as the fixing hole 32 can be fixed relative to the connection pipe 1 by the fixing screw 12.

Specifically, the fixing grooves 33 are two connecting grooves respectively formed at the top end of the edge of the reflection frame 3, and are used for matching with and fixing the ultrasonic probe 2. When the ultrasonic probes are installed, the ultrasonic probes are respectively inserted into the connecting pipe 1 from the detecting pipe, and a connecting protrusion is provided on a side surface of each ultrasonic probe, and when the ultrasonic probe is inserted into the connecting pipe 1, the connecting protrusion is engaged with the fixing groove 33 to fix each ultrasonic probe at a designated position. It is understood that the shape of the fixing groove 33 may be a square, circular or other groove, as long as it is satisfied that the fixing groove 33 can be interconnected with the ultrasonic probes to fix the ultrasonic probes at the designated positions, respectively.

Specifically, the first fixing rods 34 are four short rods, which are respectively disposed above two ends of the reflection bracket 3 and fixedly connected to the reflection plate 31, so as to fix the reflection plate 31 at a predetermined position. When the reflection bracket 3 is installed, the first fixing rod 34 fixes the reflection bracket 3, and after the fixing is completed, since the reflection plate 31 is fixedly connected with the first fixing rod 34, the reflection plate 31 is also fixed at a designated position. It is understood that the connection manner of the first fixing rod 34 and the reflection bracket 3 may be mechanical fit, welding, integral connection or other connection manners, as long as the first fixing rod 34 can be stably connected with the reflection bracket 3. Of course, the connection mode between the first fixing rod 34 and the reflection plate 31 is not particularly limited in this embodiment, as long as the reflection plate 31 can be stably connected to the first fixing rod 34.

Specifically, the second fixing rods 35 are four short rods, which are respectively disposed below and connected to two ends of the reflection bracket 3, and are used for positioning the reflection bracket 3 and the reflection plate 31. When the reflection bracket 3 is installed, the reflection bracket 3 is placed into the connection pipe 1, and at this time, the second fixing rod 35 positions the reflection bracket 3 and vertically places the reflection bracket in the connection pipe 1; after the placement, the second fixing bars 35 contact both sides of the reflection plate 31 and fix them at a designated position. It is understood that the connection manner of the second fixing rod 35 and the reflection bracket 3 may be mechanical fit, welding, integral connection or other connection manners, as long as the second fixing rod 35 can be stably connected with the reflection bracket 3.

Example two

The embodiment of the invention is an ultrasonic water meter, and the structure of the water meter is the same as that of the first embodiment.

Different from the above embodiments, the reflector plate 31 of the present embodiment uses a multi-segment and integrated arc-shaped metal plate as the reflector plate, so that the ultrasonic detector can obtain a more comprehensive and accurate flow value during detection.

Please refer to fig. 3, which is a schematic diagram of a side structure of the reflector plate according to this embodiment, the reflector plate includes three sections, namely, an ab section, a bc section and a cd section, wherein the ab section is an arc-shaped protrusion, the bc section is an arc-shaped recess, and the cd section is a straight line, so as to divide the ultrasonic wave into three sections for reflection and reception respectively, so as to detect no specific flow rate and no water in the pipeline.

Compared with the above embodiments, the present embodiment uses the same structure at any time, but because the metal plates with different shapes are used on the reflection sheet in the reflection plate 31, the ultrasonic waves are reflected to the ultrasonic receiving probe 22 and received in three different forms, so that the ultrasonic flow detector records the transmission time of the ultrasonic waves, the comprehensive detection of the pipeline is completed, and the detection precision of the ultrasonic water meter is improved.

Furthermore, the reflecting plate is provided with at least three sections of metal sheets which are integrally connected, and the length and the angle of each section of metal sheet are different, so that when the reflecting plate reflects the ultrasonic wave, the diffused ultrasonic wave can be accumulated and accurately reflected to the other reflecting plate, and the detection precision of the ultrasonic detector is improved.

Particularly, the ab section of the reflector plate is in a shape of a convex approximate arc, so that the reflector plate can be stably contacted with the protective shell, and deviation caused by shaking due to the influence of water flow can be avoided; meanwhile, since the ab-section is located at a position where ultrasonic scattering is most dispersed, ultrasonic waves can be effectively reflected and unnecessary sound waves can be removed by using the convex arc.

Particularly, the reflector plate bc section is in a shape of a concave approximate arc, and the bc section is located at a position where ultrasonic scattering is concentrated, so that the accumulated ultrasonic can be effectively reflected to the same direction by adopting the concave arc, and the detection precision is improved.

Particularly, the cd section of the reflector plate is linear, and because the cd section is located at a position where ultrasonic scattering is relatively dispersed, the metal plate adopting the linear shape is more directly reflected onto the metal plate of the other reflector plate 31; meanwhile, the cd section can be compared with the ab section and the bc section, and a more accurate real-time flow value can be obtained by comparing and analyzing a plurality of measured data.

Particularly, since the reflecting plate 31 has a multi-stage shape, when detecting water flow, the specific water level in the pipeline can be detected according to the principle that the transmission speed of ultrasonic waves is different under different media and the flow value detected by each stage, and whether the pipeline leaks water can be judged.

Further, the method for determining the length and angle of each arc in the reflective plate 31 is as follows:

step 1: the section curve shape of the ab-section metal sheet is determined by the formula (1):

wherein L1 is the arc length of ab section sheetmetal, and r is the internal diameter of pipeline, and theta 1 is the contained angle of ab section sheetmetal and rivers direction, just:

rho is the actual density of water in the pipeline and can be measured by an ultrasonic detector, rho 0 is the standard density of water, theta 0 is a preset included angle of the reflecting plate, and theta 0 is 45 degrees;

the ab section adopts the shape of convex approximate circular arc, when stabilizing the sheetmetal at the reflecting plate, can effectively reflect dispersed ultrasonic wave to with its reflection to the specified direction.

Step 2: the shape of the cross-sectional curve of the bc-segment metal sheet is determined by equation (3):

wherein, L2 is the arc length of bc section sheetmetal, and D is length between two reflecting plates 31, theta 2 is the contained angle of bc section sheetmetal and rivers direction, just:

wherein rho is the actual density of water in the pipeline, and rho 0 is the standard density of water;

the bc section adopts a shape of a concave gold wire arc, reflects the collected ultrasonic waves and disperses the ultrasonic waves, so that the reflected ultrasonic waves can be emitted to the other reflecting plate in parallel.

And step 3: the sectional curve shape of the cd segment metal sheet is determined by equation (5):

wherein, L3 is the arc length of cd section sheetmetal, and theta 3 is the contained angle of cd section sheetmetal and rivers direction, just:

the cd section chooses the straight line shape for use, can reflect the ultrasonic wave steady relatively to another reflecting plate on, its data when the reflection ultrasonic wave can be used for contrasting with the data when ab section and bc section reflection ultrasonic wave simultaneously to this whether leaks in the pipeline and makes more accurate judgement.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heating, ventilation and water leakage protection system is characterized by comprising:

when the heating, ventilation and water leakage protection system is operated for the first time, the water leakage protection module enters a learning mode, a timer starts to time, the water leakage protection module respectively detects and counts the water inlet flow, the water outlet flow, the water inlet temperature, the water outlet temperature and the indoor temperature in a pipeline, when the timing time reaches tc1, the water leakage protection module counts the total water inlet flow Qa0 and the total water outlet flow Qb0 within tc1 time, calculates the average water inlet temperature, the average water outlet temperature and the average indoor temperature within tc1 time, calculates a water inlet flow correction coefficient alpha and a water outlet flow correction coefficient beta according to the parameters, wherein, for the water inlet flow correction coefficient alpha, for the water outlet flow correction coefficient beta, after calculating the flow correction coefficient, the water leakage protection module corrects an initial water inlet flow matrix Qa0 and an initial water outlet flow matrix Qb0 into a preset water inlet flow matrix Qa (Qa1, qa2, Qa3, Qa4) and a preset outlet flow matrix Qb (Qb1, Qb2, Qb3, Qb 4); for Qai, i is 1, 2, 3, 4, Qai is Qa0i a; for Qbj, j is 1, 2, 3, 4, Qbj is Qb0j × β;

after the correction is completed, the water leakage protection module compares the values Qa0 and Qa matrix, and compares the values Qb0 and Qb matrix:

2. The heating and ventilation water leakage protection system according to claim 1, wherein the single ultrasonic flow detector comprises:

3. The heating ventilation water leakage protection system according to claim 2, wherein the reflection plate is provided with a reflection sheet on a surface thereof, and the reflection sheet is a three-segment integrally connected arc-shaped sheet for reflecting the ultrasonic waves to a designated direction.

4. The heating, ventilation and water leakage protection system according to claim 2, wherein the ultrasonic detector is externally connected with at least two ultrasonic probes, and the ultrasonic probes are respectively arranged inside the connecting pipe to transmit and receive ultrasonic waves so as to accurately detect water flow in the connecting pipe.

5. The heating ventilation water leakage protection system as claimed in claim 4, wherein said connection pipe is a cylindrical pipe, two detection pipes are provided above the connection pipe for respectively loading said ultrasonic probes, a fixing pipe is provided between the two detection pipes, and a fixing screw is provided in the fixing pipe for fixing said reflection bracket at a designated position in said connection pipe; and a control pipe is arranged at the upper end of the water inlet of the connecting pipe and is used for loading the electric ball valve.

6. The heating, ventilation and water leakage protection system according to claim 5, wherein each detection pipe is further provided with an O-ring with a corresponding size, the O-ring is arranged in the detection pipe and is respectively positioned below each ultrasonic probe so as to respectively seal a gap between each ultrasonic probe and each detection pipe; the fixing pipe is internally provided with an O-shaped ring with a corresponding size, the O-shaped ring is arranged below the fixing screw and used for sealing a gap between the fixing screw and the fixing pipe so as to prevent water in the connecting pipe from leaking into the fixing pipe.

7. The heating ventilation water leakage protection system as claimed in claim 5, wherein the ends of the detection tube are provided with press caps for respectively fixing each ultrasonic probe at a designated position.

8. The heating ventilation water leakage protection system of claim 7, wherein a gasket is further disposed under the pressing cap to prevent the pressing cap from damaging the ultrasonic probes.

9. The heating and ventilation water leakage protection system of claim 2, wherein the reflective bracket further comprises:

at least two fixing grooves which are respectively arranged at the connecting grooves at the top end of the edge of the reflecting bracket and are used for connecting with the ultrasonic probe and fixing the ultrasonic probe at a specified position;

10. The heating ventilation water leakage protection system according to claim 2, wherein the electric ball valve is connected to the ultrasonic detector to control the opening and closing of the pipeline according to the flow rate measured by the ultrasonic detector, and comprises:

a valve stem disposed within the control tube and coupled to the actuator;