CN214332344U - Pipeline air leakage detector - Google Patents
Pipeline air leakage detector Download PDFInfo
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- CN214332344U CN214332344U CN202120172760.6U CN202120172760U CN214332344U CN 214332344 U CN214332344 U CN 214332344U CN 202120172760 U CN202120172760 U CN 202120172760U CN 214332344 U CN214332344 U CN 214332344U
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Abstract
The utility model provides a pipeline air leakage detector, belonging to the field of pipeline tightness detection, comprising an air system, a control system, a pressure measuring system and a transmission system; the wind system comprises a variable frequency fan, a variable frequency speed regulator, a programmable controller, a power socket, a switch, a potentiometer knob, a signal receiving port, a power supply port and a connector; the control system comprises a touch display screen, a programmable controller, a miniature pressure gauge, a sensing element, a signal output port, an upstream receiving port, a downstream receiving port, a pipeline pressure receiving port, a memory card slot and a charging port; the pressure measuring system comprises a flow nozzle, an upstream pressure measuring port, a downstream pressure measuring port and a rubber tube; the transmission system comprises a plastic film pipeline and a conversion interface connected with the pipeline. The detector can accurately detect the air leakage rate of the pipeline, can be used for detecting the air tightness in various situations, and comprises but not limited to detecting the air tightness of the pipeline and the air tightness of a house.
Description
Technical Field
The utility model belongs to the pipeline detection field, in particular to pipeline leaks amount of wind detector.
Background
In the current market, the detector used for detecting the strength and the tightness of the pipeline, namely the air leakage rate has the following defects: the volume is large, the weight is heavy, and the carrying is inconvenient; the operation mode of the operation panel is key operation; the frequency conversion control of the fan adopts knob control; the air leakage rate is displayed under the current pressure, and the air leakage rate is converted into the air leakage rate under the acceptance standard pressure to be manually calculated; if the pressure in the pipeline cannot be increased to the set pressure, the air leakage rate under the pressure cannot be detected, and the pressure needs to be reduced for manual calculation.
SUMMERY OF THE UTILITY MODEL
Problem to above-mentioned prior art exists, the utility model provides a pipeline leaks amount of wind detector for the gas tightness of detection pipeline.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a pipeline air leakage detector comprises an air system, a control system, a pressure measuring system and a transmission system;
the wind system comprises a variable frequency fan, a variable frequency speed regulator, a programmable controller, a power socket, a switch, a potentiometer knob, a signal receiving port, a power supply port and a connecting port, wherein the variable frequency speed regulator and the programmable controller are arranged in the variable frequency fan;
the control system comprises a touch display screen, a programmable controller, a miniature pressure gauge, a sensing element, a signal output port, an upstream receiving port, a downstream receiving port, a pipeline pressure receiving port, a memory card slot and a charging port, wherein the programmable controller, the miniature pressure gauge and the sensing element are arranged in the control system;
the pressure measuring system comprises a flow nozzle, an upstream pressure measuring port, a downstream pressure measuring port and a rubber tube;
the transmission system comprises a plastic film pipeline and a conversion interface connected with the pipeline;
a signal receiving port of the wind system is connected to a signal output port of the control system through a data transmission line, and a power supply port is connected to a charging port of the control system through a charging wire; an upstream receiving port of the control system is connected to an upstream pressure taking port of the pressure measuring system through a rubber pipe, a downstream receiving port is connected to a downstream pressure taking port of the pressure measuring system through a rubber pipe, the upstream receiving port and the downstream receiving port are also connected with micro pressure gauges arranged in the control system, and a memory card is arranged in a memory card groove; and a flow nozzle of the pressure measuring system is connected to a connecting port of the air system.
Preferably, the variable frequency fan is manually adjusted by a potentiometer knob or automatically adjusted by pipeline pressure.
Preferably, the micro pressure gauge measures in the range of-5000 Pa to 5000Pa, with a precision of + -0.1% and a resolution of 0.1 Pa.
Preferably, the connection port is securely sealed by, but not limited to, a hose clamp.
Preferably, the flow nozzle consists of a nozzle throat and nozzle tube, with, but not limited to, the use of a screw-on seal.
The utility model discloses the beneficial technological effect who brings:
the detector can accurately detect the air leakage rate of the pipeline, can convert the tested air leakage rate into the air leakage rate under the test pressure specified in the national standard GB50243-2016 (acceptance Standard for construction quality of Ventilation and air Conditioning engineering) and compare the air leakage rate with the allowable air leakage rate specified in GB50243-2016 to judge whether the pipeline installation meets the requirements; the detector is provided with a sensing element which can sense environmental conditions such as atmospheric pressure, temperature, humidity and the like in a working environment to compensate the influence of factors such as water vapor and the like in the environment on a measurement result, so that the measurement precision is higher, and the applicability of the detector to the use environment is enhanced; the control system of the detector integrates the detection standards of China, America, Europe and other countries, so that the device can be suitable for multiple countries, and the adaptability of the detector to the use area is enhanced; the detector is reliable, small in size, light in weight and low in cost, and can be carried by hand; the method has universality and can be used for air tightness detection in various situations, including but not limited to detection of pipeline and house air tightness.
Drawings
FIG. 1 is the internal structure of the detector;
FIG. 2 is a connection diagram of the detector with a pipeline during operation;
FIG. 3 is a flow chart of the present detector in practical application;
wherein, 1-the utility model is a detector; 2-air outlet; 3-a seam leakage position; 4-plastic film pipes; 5-converting the interface; 101-a variable frequency fan; 102-a switch; 103-power socket; 104-potentiometer knob; 105-a signal receiving port; 106-power supply port; 107-connection port; 108-a flow nozzle; 109-upstream pressure tapping; 110-downstream pressure take-off; 111-touch display screen; 112-signal output port; 113-an upstream receiving port; 114-a downstream receiving port; 115-a line pressure receiving port; 116-a charging port; 117-hose; 118-a data transmission line; 119-a charging wire; 120-memory card slot.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 and 2, the air leakage detector for a pipeline includes an air system, a control system, a pressure measuring system, and a transmission system.
The wind system comprises a variable frequency fan 101, a variable frequency speed regulator, a programmable controller, a power socket 103, a switch 102, a potentiometer knob 104, a signal receiving port 105, a power supply port 106 and a connecting port 107, wherein the variable frequency speed regulator and the programmable controller are arranged in the variable frequency fan. The variable frequency fan 101 has manual regulation and automatic regulation functions; the manual adjustment is performed by the potentiometer knob 104, and the automatic adjustment is performed by the pipe pressure. The signal receiving port 105 is connected to the signal output port 112 of the control system through a data transmission line 118, and the power supply port 106 is connected to the charging port 116 of the control system through a charging line 119, wherein the power supply port 106 is a USB connection, and the output voltage is DC 5V.
The control system comprises a touch display screen 111, a programmable controller, a miniature pressure gauge, a sensing element, a signal output port 112, an upstream receiving port 113, a downstream receiving port 114, a pipeline pressure receiving port 115, a memory card slot 120 and a charging port 116, wherein the programmable controller, the miniature pressure gauge and the sensing element are arranged in the control system. The signal output port 112 is connected to a signal receiving port 105 of an air system through a data transmission line 118, the upstream receiving port 113 is connected to an upstream pressure taking port 109 of a pressure measuring system through a rubber tube 117, the downstream receiving port 114 is connected to a downstream pressure taking port 110 of the pressure measuring system through a rubber tube 117, wherein the upstream receiving port 113 and the downstream receiving port 114 are connected to a micro pressure gauge built in a control system, the measuring range of the micro pressure gauge is-5000 Pa, the measuring precision is +/-0.1%, and the resolution is 0.1 Pa; the charging port 116 is connected to the supply port 106 of the wind system through a charging wire 119; the memory card is placed in memory card slot 120.
The pressure measurement system includes a flow nozzle 108, an upstream pressure tap 109, a downstream pressure tap 110, and a hose 117. The upstream pressure-taking port 109 is connected to an upstream receiving port 113 of the control system through a rubber pipe 117, and the downstream pressure-taking port 110 is connected to a downstream receiving port 114 of the control system through a rubber pipe 117; the flow nozzle 108 is made of, but not limited to, plastic and aluminum, the flow nozzle 108 is connected to a connection port 107 of the wind system, the flow nozzle 108 is made of a nozzle throat and a nozzle pipe, and is fixedly sealed by, but not limited to, using screws, and the connection port 107 is fixedly sealed by, but not limited to, using a hose clamp.
The transport system comprises a plastic film pipe 4 and a switching interface 5 connected with the pipe.
As an embodiment shown in fig. 2, there is a leak department 3 in the pipeline, when measuring the pipeline air leakage, at first will seal pipeline air outlet 2, form airtight pipeline, will again the utility model discloses detector 1 is connected to the pipeline through plastic film pipeline 4, through aerifing the pressure boost to pipeline inside, makes the inside and outside pressure differential that forms of pipeline, calculates the air leakage under this pressure through the static pressure difference of the upper and lower reaches of the flow nozzle who monitors to show in real time on control system's touch display screen, and can select to show the air leakage under the different standards.
The basic principle of detecting the air leakage of the pipeline is as follows: the primary device is installed to create a static pressure differential between the upstream side and the throat, based on the flow nozzle being installed in a fluid filled pipeline. The flow rate can be determined from the measured value of the differential pressure, the knowledge of the fluid characteristics, and the use of the device.
The air leakage quantity calculation formula is
Wherein Q represents the air leakage rate (m) of the pipeline3·h)；
C represents an outflow coefficient;
beta represents the ratio of the diameter, the diameter of the throat of the nozzle to the internal diameter of the upstream measurement duct;
ε represents the coefficient of expansion;
d represents the nozzle throat diameter (m);
Δ P represents a static pressure difference (Pa) upstream and downstream of the nozzle;
ρ represents the air density (kg/m)3)。
The sensing element of the detector compensates the influence of factors such as water vapor in the environment on the measurement result by sensing the environmental conditions such as atmospheric pressure, temperature, humidity and the like in the working environment, so that the measurement precision is higher; the control system integrates national detection standards of China, America, Europe and the like, can detect the leakage level of the pipeline, judges whether the leakage level meets the national standards, and simultaneously stores the result in the memory card.
The detector can be used for detecting air tightness in various situations, including but not limited to detecting the air tightness of houses, such as business surpasses, hotels, schools, hospitals, factories and the like; the air leakage detection device can be used for detecting the air leakage quantity of a pipeline or a closed space and evaluating whether the air tightness requirement is met.
As shown in fig. 3, the specific working flow of using the air leakage detector is as follows:
(1) and (5) surveying the construction site and the pipeline system, and formulating a detection sealing scheme. And evaluating the air leakage severity of the pipeline system by surveying the surrounding environment of the site and the related parameter information of the pipeline system, and formulating a preliminary detection scheme.
(2) And dividing the whole pipeline system into a plurality of working sections by combining a construction drawing. In order to more effectively detect the air leakage of the pipeline, the whole pipeline system is integrally or sectionally detected by combining a field pipeline layout according to the air leakage severity evaluation of the pipeline system.
(3) Checking whether the structure of the pipeline system is complete. By checking the integrity of the piping system, it is determined whether the detection condition is satisfied.
(4) After the foregoing investigation and evaluation of the construction environment and the piping system, the system inspection of the piping system is started. And (3) blocking the pipeline, namely blocking all air outlets of the pipeline system to be detected, and sealing the pipeline.
(5) After the pipeline system is subjected to sealing treatment, the device in the technical scheme is connected with the pipeline. The connecting port with the pipeline is an air outlet of the pipeline or a purposeful opening on the pipeline.
(6) And starting to detect the air leakage rate of the pipeline system. The device in the technical scheme calculates the air leakage rate under the pressure through the monitored static pressure difference between the upstream and the downstream of the flow nozzle, displays the air leakage rate on a display screen of a control system in real time, and can selectively display the air leakage rate under different standards.
(7) After the whole detection is finished, the detection result can be exported by connecting a memory card in the control system with a computer.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (5)
1. A pipeline air leakage detector is characterized by comprising an air system, a control system, a pressure measuring system and a transmission system;
the wind system comprises a variable frequency fan, a variable frequency speed regulator, a programmable controller, a power socket, a switch, a potentiometer knob, a signal receiving port, a power supply port and a connecting port, wherein the variable frequency speed regulator and the programmable controller are arranged in the variable frequency fan;
the control system comprises a touch display screen, a programmable controller, a miniature pressure gauge, a sensing element, a signal output port, an upstream receiving port, a downstream receiving port, a pipeline pressure receiving port, a memory card slot and a charging port, wherein the programmable controller, the miniature pressure gauge and the sensing element are arranged in the control system;
the pressure measuring system comprises a flow nozzle, an upstream pressure measuring port, a downstream pressure measuring port and a rubber tube;
the transmission system comprises a plastic film pipeline and a conversion interface connected with the pipeline;
a signal receiving port of the wind system is connected to a signal output port of the control system through a data transmission line, and a power supply port is connected to a charging port of the control system through a charging wire; an upstream receiving port of the control system is connected to an upstream pressure taking port of the pressure measuring system through a rubber pipe, a downstream receiving port is connected to a downstream pressure taking port of the pressure measuring system through a rubber pipe, the upstream receiving port and the downstream receiving port are also connected with micro pressure gauges arranged in the control system, and a memory card is arranged in a memory card groove; and a flow nozzle of the pressure measuring system is connected to a connecting port of the air system.
2. The pipeline air leakage detector according to claim 1, wherein the variable frequency fan is manually adjusted by a potentiometer knob or automatically adjusted by pipeline pressure.
3. The air leakage rate detector according to claim 1, wherein the micro pressure gauge has a measuring range of-5000 Pa to 5000Pa, a measuring accuracy of ± 0.1%, and a resolution of 0.1 Pa.
4. The air leakage detector according to claim 1, wherein the connection port is fixedly sealed by a hose clamp.
5. The air leakage detector according to claim 1, wherein the flow nozzle comprises a nozzle throat and a nozzle tube, and is fixed and sealed by using screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120172760.6U CN214332344U (en) | 2021-01-22 | 2021-01-22 | Pipeline air leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120172760.6U CN214332344U (en) | 2021-01-22 | 2021-01-22 | Pipeline air leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214332344U true CN214332344U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120172760.6U Active CN214332344U (en) | 2021-01-22 | 2021-01-22 | Pipeline air leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214332344U (en) |
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2021
- 2021-01-22 CN CN202120172760.6U patent/CN214332344U/en active Active
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