CN210920969U - Portable natural gas leakage detector - Google Patents
Portable natural gas leakage detector Download PDFInfo
- Publication number
- CN210920969U CN210920969U CN201921461836.6U CN201921461836U CN210920969U CN 210920969 U CN210920969 U CN 210920969U CN 201921461836 U CN201921461836 U CN 201921461836U CN 210920969 U CN210920969 U CN 210920969U
- Authority
- CN
- China
- Prior art keywords
- gas
- resistor
- electromagnetic valve
- air pump
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a portable natural gas leakage detector belongs to natural gas check out test set technical field. The portable natural gas leakage detector comprises a shell, wherein the shell is provided with a gas inlet, a gas outlet, a display unit and an alarm unit, and a gas pump, a three-way electromagnetic valve, a gas chromatographic column for separating gas components, a gas detection unit and a processing unit are arranged in the shell; the air inlet end of the air pump is communicated with the air inlet, the gas to be detected pumped by the air pump is gated by the three-way electromagnetic valve, one path of the gas to be detected passes through the gas chromatographic column and then enters the gas detection unit for detecting the components of the gas to be detected, and the other path of the gas to be detected directly enters the gas detection unit for detecting the concentration. The utility model discloses a tee bend solenoid valve rationally distributed gas circuit is connected, has retrencied the inside structural space of detecting instrument, has increased its portability.
Description
Technical Field
The utility model relates to a portable natural gas leakage detector belongs to natural gas check out test set technical field.
Background
A small amount of the ethane component is present in the natural gas, whereas the ethane component is absent in the biogas. In the inspection of the leakage of the natural gas pipeline, whether the leakage is natural gas leakage or methane is distinguished, and whether ethane components exist at a suspected leakage point is mainly detected, so that whether the natural gas leakage or the methane exists at the current leakage point can be distinguished through ethane analysis at the suspected leakage point, the inspection of the leakage of the natural gas pipeline is realized, and blind excavation is avoided.
The existing ethane detector is large in size, inconvenient to carry and inconvenient for inspection personnel to use.
Therefore, there is a need for a portable natural gas leakage detector to solve the problem of inconvenience in carrying of the conventional natural gas leakage detector.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a portable natural gas leakage detector to there is the inconvenient problem of carrying in the natural gas leakage detector who solves current.
The utility model provides a portable natural gas leakage detector for solving the technical problems, which comprises a shell, wherein the shell is provided with an air inlet, an air outlet, a display unit and an alarm unit, and the shell is internally provided with an air pump, a three-way solenoid valve, a gas chromatographic column for separating gas components, a gas detection unit and a processing unit;
the gas inlet end of the gas pump is communicated with the gas inlet, the gas to be detected pumped by the gas pump is gated by the three-way electromagnetic valve, one path of the gas to be detected passes through the gas chromatographic column and then enters the gas detection unit for detecting the components of the gas to be detected, and the other path of the gas to be detected directly enters the gas detection unit for detecting the concentration;
the gas detection unit is connected with the processing unit so as to send a detection result to the processing unit;
the processing unit is connected with the three-way electromagnetic valve in a control mode so as to control the gating of the three-way electromagnetic valve;
the processing unit is connected with the air pump in a control mode so as to control the action of the air pump;
the processing unit is connected with the display unit to control the display unit to display the detection result;
the processing unit is also connected with the alarm unit so as to control the alarm unit to alarm and remind when the concentration of alkane gas exceeds a set threshold value.
Furthermore, the portable natural gas leakage detector further comprises an inner shell, the three-way electromagnetic valve and the gas chromatographic column are arranged in the inner shell, an air inlet end and an air outlet end are arranged on the surface of the inner shell, the air inlet end of the inner shell is connected with the air inlet end of the three-way electromagnetic valve, and the air outlet end of the inner shell is connected with the air outlet end of the gas chromatographic column.
Further, the air inlet with the gas outlet sets up adjacently, the inner shell is located the next door of air inlet, the air pump is located the inner shell with the homonymy of air inlet, gaseous detecting element locates the air pump is close to one side of gas outlet.
Furthermore, the portable natural gas leakage detector also comprises an air pump electromagnetic valve control circuit, and the processing unit is connected with the control end of the air pump through the air pump electromagnetic valve control circuit;
the air pump electromagnetic valve control circuit comprises an operational amplifier U1, a triode Q1, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a diode D1 and an air pump control terminal connector P1;
the resistor R1 is connected between the air pump control end of the processing unit and the positive input end of the operational amplifier U1; the resistor R2 is connected between the ground and the positive input end of the operational amplifier U1 after being connected with the capacitor C1 in parallel; the collector of the triode Q1 is connected with VDD and is grounded through a second capacitor; the emitter of the triode Q1 is grounded through the resistor R3; the output end of the operational amplifier U1 is connected with the base of the triode Q1; the reverse input end of the operational amplifier U1 is connected with the positive terminal of the air pump control end connector P1; the negative terminal of the air pump control terminal connector P1 is grounded, and is connected with the positive terminal of the air pump control terminal connector P1 through a diode D2.
Furthermore, the portable natural gas leakage detector also comprises a three-way electromagnetic valve control circuit, and the processing unit is connected with the control end of the three-way electromagnetic valve through the three-way electromagnetic valve control circuit;
the three-way electromagnetic valve control circuit comprises a boost regulator U2, a triode Q2, a capacitor C3, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC4, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an inductor L1, a diode D2 and an electromagnetic valve control end connector P2;
the electrolytic capacitor EC1, the electrolytic capacitor EC2 and the electrolytic capacitor EC3 are connected in parallel and then connected between a +12V power supply end and the ground; the resistor R4 and the resistor R5 are connected in series between the anode of the electrolytic capacitor EC3 and the ground; the FB terminal of the boost regulator U2 is connected to the connection point of the resistor R4 and the resistor R5; the SW terminal of the boost regulator U2 is connected with the anode of the electrolytic capacitor EC3 through the diode D2, and is also connected with the VIN terminal of the boost regulator U2 through an inductor L1; the GND end of the boost regulator U2 is grounded; the capacitor C3 is connected in parallel with the electrolytic capacitor EC4 and then is connected between a VDD power supply end and the ground; the anode of the electrolytic capacitor EC4 is connected with the VIN end of the boost regulator U2; the resistor R6 and the resistor R7 are connected in series between the VIN terminal of the boost regulator U2 and ground; the EN end of the boost regulator U2 is connected with the base electrode of the triode Q2 through the connection point of the resistor R6 and the resistor R7 and the resistor R8; the control end of a three-way solenoid valve of the processing unit is connected with the base electrode of the triode Q2 through the resistor R8; the collector of the triode Q2 is connected with the negative terminal of the electromagnetic valve control end connector P2; and the positive terminal of the electromagnetic valve control end connector P2 is connected with a +12V power supply end.
Further, the gas detection unit is a semiconductor gas sensor.
Furthermore, the portable natural gas leakage detector also comprises a Bluetooth module, and the processing unit is connected with the Bluetooth module and used for being connected with a computer or a Bluetooth printer.
The utility model has the advantages that:
the utility model discloses can go out methane, ethane, propane composition in the natural gas at on-the-spot rapid analysis to confirm that the gas of leaking is the natural gas, and other interference gas such as instead marsh gas, thereby realize the detection to the natural gas leakage. The utility model simplifies the structure space inside the detecting instrument and increases the portability through the reasonable layout of the gas circuit connection of the three-way electromagnetic valve; meanwhile, the semiconductor gas sensor is used for replacing the existing infrared gas sensor, so that the internal space and the raw material cost of the detection instrument are further reduced, and the portability and the practicability of the detection instrument are further improved.
Additionally, the utility model discloses with three way solenoid valve and gas chromatography column encapsulation together, only leave the inlet end and give vent to anger the end, still given the concrete distribution of inside each part simultaneously, overall arrangement is succinct orderly, has utilized the inside space of casing high-efficiently, is an optimal inside overall arrangement scheme, has greatly improved its portability and practicality.
Drawings
Fig. 1 is the internal structure schematic diagram of the embodiment of the portable natural gas leakage detector of the utility model:
fig. 2 is a schematic front structure diagram of an embodiment of the portable natural gas leakage detector of the utility model:
fig. 3 is a schematic connection diagram of the control circuit of the air pump solenoid valve of the portable natural gas leakage detector embodiment:
FIG. 4 is a schematic connection diagram of a three-way solenoid valve control circuit according to an embodiment of the portable natural gas leakage detector of the present invention;
FIG. 5 is a schematic diagram of the signal amplification circuit of the semiconductor gas sensor according to an embodiment of the portable natural gas leakage detector of the present invention;
FIG. 6 is a pin diagram of an embodiment of the portable natural gas leak detector of the present invention, LTC1867 ADC chip;
the device comprises a gas inlet 1, a gas outlet 2, a gas pump 3, a gas inlet end of the gas pump 3-1, a gas outlet end of the gas pump 3-2, a three-way solenoid valve 4-1, a first gas outlet end of the three-way solenoid valve 4-2, a second gas outlet end of the three-way solenoid valve 4-3, a gas chromatographic column 5, a gas inlet end of the gas chromatographic column 5-1, a gas outlet end of the gas chromatographic column 5-2, a semiconductor gas sensor 6, an audible and visual alarm 7, a Bluetooth module 8, a battery 9, a charging interface 10, a liquid crystal display 11 and a key 12.
Detailed Description
Embodiments of the present embodiment will be specifically described below with reference to the drawings.
Fig. 1 is a schematic diagram of the internal structure of the present embodiment, and fig. 2 is a schematic diagram of the front structure of the present embodiment, which specifically includes a housing, the housing is provided with an air inlet, an air outlet, a display unit, a key and an alarm unit, and the housing is internally provided with an air pump, a three-way electromagnetic valve, a gas chromatography column, a gas detection unit and a processing unit.
Specifically, in the embodiment, the processing unit adopts an STM32 singlechip series of ST company, the display unit adopts a liquid crystal display screen, the gas detection unit adopts a semiconductor gas sensor, and the alarm unit adopts an audible and visual alarm; the air inlet adopts a stainless steel quick connector, so that the sampling probe rod can be quickly and conveniently connected or removed.
The gas chromatography column comprises a gas inlet end and a gas outlet end and is used for carrying out component separation on gas entering from the gas inlet end of the gas chromatography column. The gas to be detected enters a gas chromatographic column through a three-way valve of an electromagnetic valve, and then components such as methane, ethane and the like in the gas to be detected are separated and enter the semiconductor gas sensor one by one.
The air pump comprises an air inlet end, an air outlet end and an air pump electromagnetic valve, and is used for pumping air or detecting air to enter the equipment from the outside, effectively flows in the equipment through the pushing of the air pump, and finally is discharged from an air outlet of the equipment. The STM32 singlechip is connected with the control end of the air pump electromagnetic valve, and can adjust the working power of the air pump, so that the air pumping speed of the air pump is in the range of detection requirement conditions.
The three-way electromagnetic valve comprises an air inlet end, a first air outlet end and a second air outlet end; the STM32 singlechip is connected with the control end of the three-way electromagnetic valve and is used for controlling the gas circuit switching of the three-way electromagnetic valve. In this embodiment, select different detection function through the panel button, can adjust three way solenoid valve's break-make electricity, switch the gas circuit, realize the detection demand of different functions.
The semiconductor gas sensor comprises a gas inlet end and a gas outlet end, and is connected with the STM32 single chip microcomputer and used for detecting and analyzing components of gas entering from the gas inlet end of the semiconductor gas sensor and sending a detection result to the STM32 single chip microcomputer. The high-sensitivity semiconductor sensor is used as a detection core for analyzing the concentration of each component of the separated gas to be detected.
The embodiment further comprises a Bluetooth module, and the processing unit is connected with the Bluetooth module and used for being connected with a computer or a Bluetooth printer to transmit the detection result.
The STM32 single chip microcomputer is connected with the liquid crystal display screen and used for controlling the liquid crystal display screen to display the detection result;
the STM32 singlechip is also connected with audible and visual alarm for when alkane gas concentration surpasses the settlement threshold value control alarm unit and report to the police and remind. When the MCU judges that the concentration of the alkane gas exceeds the preset value, the equipment can send out alarm sound and alarm light to prompt a user that the gas to be detected leaks.
Concrete gas circuit connecting structure of embodiment
The air inlet is connected with the air inlet end of the three-way electromagnetic valve through the air inlet end of the air pump and the air outlet end of the air pump in sequence; a first gas outlet end of the three-way electromagnetic valve is connected with a gas inlet end of the semiconductor gas sensor through a gas inlet end of the gas chromatographic column and a gas outlet end of the gas chromatographic column in sequence; the second air outlet end of the three-way electromagnetic valve is connected with the air inlet end of the semiconductor gas sensor; the gas outlet end of the semiconductor gas sensor is connected with the gas outlet.
In the embodiment, the gas circuit connection is reasonably arranged through the three-way electromagnetic valve, so that the structural space in the detection instrument is simplified, and the portability of the detection instrument is improved; meanwhile, the semiconductor gas sensor is used for replacing the existing infrared gas sensor, so that the internal space and the raw material cost of the detection instrument are further reduced, and the portability and the practicability of the detection instrument are further improved.
Internal layout of the present embodiment
This embodiment still includes the inner shell, and three way solenoid valve and gas chromatography column set up in the inner shell, and the inner shell surface is equipped with the inlet end and gives vent to anger the end, and the inlet end of inner shell is connected with three way solenoid valve's inlet end, and the end of giving vent to anger of inner shell is connected with gas chromatography column's the end of giving vent to anger.
The air inlet and the air outlet are adjacently arranged, the inner shell is arranged beside the air inlet, the air pump is arranged at the same side of the inner shell and the air inlet, and the semiconductor gas sensor is arranged at one side of the air pump close to the air outlet.
The embodiment encapsulates the three-way electromagnetic valve and the gas chromatographic column together, only reserves the air inlet end and the air outlet end, and simultaneously provides the concrete distribution of each part inside, the whole layout is simple and orderly, the space inside the shell is efficiently utilized, the optimal internal layout scheme is provided, and the portability and the practicability of the gas chromatographic column are greatly improved.
Control and amplification circuit of the present embodiment
In this embodiment, the STM32 singlechip is connected with the control end of air pump solenoid valve through air pump solenoid valve control circuit.
Fig. 3 is a schematic connection diagram of a control circuit of the air pump solenoid valve, which includes an operational amplifier U1, a transistor Q1, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a diode D1, and a solenoid valve control terminal connector P1.
The resistor R1 is connected between the air pump control end of the processing unit and the positive input end of the operational amplifier U1; the resistor R2 is connected between the ground and the positive input end of the operational amplifier U1 after being connected with the capacitor C1 in parallel; the collector of the triode Q1 is connected with VDD and is grounded through a second capacitor; the emitter of the transistor Q1 is grounded through a resistor R3; the output end of the operational amplifier U1 is connected with the base electrode of the triode Q1; the reverse input end of the operational amplifier U1 is connected with the positive terminal of the electromagnetic valve control end connector P1; the negative terminal of solenoid valve control terminal P1 is grounded and is connected to the positive terminal of solenoid valve control terminal P1 through diode D2.
In this embodiment, the STM32 singlechip is connected with the control end of three-way solenoid valve through three-way solenoid valve control circuit.
Fig. 4 is a schematic connection diagram of a three-way solenoid valve control circuit, which includes a boost regulator U2, a transistor Q2, a capacitor C3, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC4, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an inductor L1, a diode D2, and a solenoid valve control terminal connector P2.
The electrolytic capacitor EC1, the electrolytic capacitor EC2 and the electrolytic capacitor EC3 are connected in parallel and then connected between a +12V power supply end and the ground; the resistor R4 and the resistor R5 are connected in series between the anode of the electrolytic capacitor EC3 and the ground; the FB terminal of the boost regulator U2 is connected to the connection point of the resistor R4 and the resistor R5; the SW end of the boost regulator U2 is connected with the anode of an electrolytic capacitor EC3 through a diode D2, and is also connected with the VIN end of the boost regulator U2 through an inductor L1; the GND end of the boost regulator U2 is grounded; the capacitor C3 is connected in parallel with the electrolytic capacitor EC4 and then is connected between a VDD power supply end and the ground; the anode of the electrolytic capacitor EC4 is connected with the VIN end of the boost regulator U2; the resistor R6 and the resistor R7 are connected in series between the VIN end of the boost regulator U2 and the ground; the EN end of the boost regulator U2 is connected with the base electrode of the triode Q2 through the connection point of the resistor R6 and the resistor R7 and the resistor R8; the control end of a three-way electromagnetic valve of the processing unit is connected with the base electrode of a triode Q2 through a resistor R8; the collector of the triode Q2 is connected with the negative terminal of the electromagnetic valve control end connector P2; the positive terminal of the solenoid valve control end connector P2 is connected with the +12V power supply end.
The boost regulator in this embodiment specifically uses an MCP1661 chip.
The semiconductor gas sensor is connected with the analog-to-digital conversion chip through a signal amplification circuit, and then connected with the STM32 single chip microcomputer through a pin of the analog-to-digital conversion chip, as shown in FIG. 5, the connection schematic diagram of the signal amplification circuit is shown.
In this embodiment, an LTC1867 ADC chip is used as an analog-to-digital conversion chip, and a pin diagram thereof is shown in fig. 6.
Working principle of the embodiment
The present embodiment is divided into two functions: and (4) rapid detection, sampling, separation and analysis.
The quick detection function is in order to fix a position of the suspected leak point department through gas concentration fast, specifically is to give vent to anger the end switch-on with three-way solenoid valve's first, through the suction of air pump, blows the gas that awaits measuring through semiconductor gas sensor, the gaseous concentration of short-term test current position, when concentration exceedes the settlement threshold value, audible-visual annunciator can report to the police and remind, this moment this position is exactly the suspected leak point department.
The sampling separation analysis function is that after the suspected leakage point is positioned, whether natural gas leakage occurs at the current position is judged by judging whether ethane gas exists or not, specifically, a second gas outlet end of the three-way electromagnetic valve is communicated, and the gas to be detected is injected into the gas chromatographic column through the suction of the gas pump to finish the sampling work; because the speed of each component in the gas to be detected passing through the gas chromatographic column is different, different components can be led out from the gas chromatographic column at different time, thereby realizing the separation of the gas components; and then, the separated components of the gas to be detected are blown through the semiconductor gas sensor in sequence through the suction of the gas pump so as to analyze the components of the components and finish the final natural gas leakage judgment work. When the presence of ethane gas is detected in each component, a natural gas leak is displayed on the screen, and inspection personnel is notified.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.
Claims (7)
1. A portable natural gas leakage detector which is characterized in that: the portable natural gas leakage detector comprises a shell, wherein the shell is provided with a gas inlet, a gas outlet, a display unit and an alarm unit, and a gas pump, a three-way electromagnetic valve, a gas chromatographic column for separating gas components, a gas detection unit and a processing unit are arranged in the shell;
the gas inlet end of the gas pump is communicated with the gas inlet, the gas to be detected pumped by the gas pump is gated by the three-way electromagnetic valve, one path of the gas to be detected passes through the gas chromatographic column and then enters the gas detection unit for detecting the components of the gas to be detected, and the other path of the gas to be detected directly enters the gas detection unit for detecting the concentration;
the gas detection unit is connected with the processing unit so as to send a detection result to the processing unit;
the processing unit is connected with the three-way electromagnetic valve in a control mode so as to control the gating of the three-way electromagnetic valve;
the processing unit is connected with the air pump in a control mode so as to control the action of the air pump;
the processing unit is connected with the display unit to control the display unit to display the detection result;
the processing unit is also connected with the alarm unit so as to control the alarm unit to alarm and remind when the concentration of alkane gas exceeds a set threshold value.
2. The portable natural gas leak detector according to claim 1, wherein: the portable natural gas leakage detector further comprises an inner shell, the three-way electromagnetic valve and the gas chromatographic column are arranged in the inner shell, the surface of the inner shell is provided with an air inlet end and an air outlet end, the air inlet end of the inner shell is connected with the air inlet end of the three-way electromagnetic valve, and the air outlet end of the inner shell is connected with the air outlet end of the gas chromatographic column.
3. The portable natural gas leak detector of claim 2, wherein: the air inlet with the gas outlet sets up adjacently, the inner shell is located the next door of air inlet, the air pump is located the inner shell with the homonymy of air inlet, gaseous detecting element is located the air pump is close to one side of gas outlet.
4. The portable natural gas leak detector of claim 3, wherein: the portable natural gas leakage detector also comprises an air pump electromagnetic valve control circuit, and the processing unit is connected with the control end of the air pump through the air pump electromagnetic valve control circuit;
the air pump electromagnetic valve control circuit comprises an operational amplifier U1, a triode Q1, a resistor R1, a resistor R2, a resistor R3, a capacitor C1, a capacitor C2, a diode D1 and an air pump control terminal connector P1;
the resistor R1 is connected between the air pump control end of the processing unit and the positive input end of the operational amplifier U1; the resistor R2 is connected between the ground and the positive input end of the operational amplifier U1 after being connected with the capacitor C1 in parallel; the collector of the triode Q1 is connected with VDD and is grounded through a second capacitor; the emitter of the triode Q1 is grounded through the resistor R3; the output end of the operational amplifier U1 is connected with the base of the triode Q1; the reverse input end of the operational amplifier U1 is connected with the positive terminal of the air pump control end connector P1; the negative terminal of the air pump control terminal connector P1 is grounded, and is connected with the positive terminal of the air pump control terminal connector P1 through a diode D2.
5. The portable natural gas leak detector of claim 4, wherein: the portable natural gas leakage detector also comprises a three-way electromagnetic valve control circuit, and the processing unit is connected with the control end of the three-way electromagnetic valve through the three-way electromagnetic valve control circuit;
the three-way electromagnetic valve control circuit comprises a boost regulator U2, a triode Q2, a capacitor C3, an electrolytic capacitor EC1, an electrolytic capacitor EC2, an electrolytic capacitor EC3, an electrolytic capacitor EC4, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, an inductor L1, a diode D2 and an electromagnetic valve control end connector P2;
the electrolytic capacitor EC1, the electrolytic capacitor EC2 and the electrolytic capacitor EC3 are connected in parallel and then connected between a +12V power supply end and the ground; the resistor R4 and the resistor R5 are connected in series between the anode of the electrolytic capacitor EC3 and the ground; the FB terminal of the boost regulator U2 is connected to the connection point of the resistor R4 and the resistor R5; the SW terminal of the boost regulator U2 is connected with the anode of the electrolytic capacitor EC3 through the diode D2, and is also connected with the VIN terminal of the boost regulator U2 through an inductor L1; the GND end of the boost regulator U2 is grounded; the capacitor C3 is connected in parallel with the electrolytic capacitor EC4 and then is connected between a VDD power supply end and the ground; the anode of the electrolytic capacitor EC4 is connected with the VIN end of the boost regulator U2; the resistor R6 and the resistor R7 are connected in series between the VIN terminal of the boost regulator U2 and ground; the EN end of the boost regulator U2 is connected with the base electrode of the triode Q2 through the connection point of the resistor R6 and the resistor R7 and the resistor R8; the control end of a three-way solenoid valve of the processing unit is connected with the base electrode of the triode Q2 through the resistor R8; the collector of the triode Q2 is connected with the negative terminal of the electromagnetic valve control end connector P2; and the positive terminal of the electromagnetic valve control end connector P2 is connected with a +12V power supply end.
6. The portable natural gas leak detector according to claim 1, wherein: the gas detection unit is a semiconductor gas sensor.
7. The portable natural gas leak detector according to claim 1, wherein: the portable natural gas leakage detector further comprises a Bluetooth module, and the processing unit is connected with the Bluetooth module and used for being connected with a computer or a Bluetooth printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921461836.6U CN210920969U (en) | 2019-09-04 | 2019-09-04 | Portable natural gas leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921461836.6U CN210920969U (en) | 2019-09-04 | 2019-09-04 | Portable natural gas leakage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210920969U true CN210920969U (en) | 2020-07-03 |
Family
ID=71347598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921461836.6U Active CN210920969U (en) | 2019-09-04 | 2019-09-04 | Portable natural gas leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210920969U (en) |
-
2019
- 2019-09-04 CN CN201921461836.6U patent/CN210920969U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103293280B (en) | A kind of gas testing device | |
| CN205749448U (en) | A kind of multifunctional gas detector | |
| CN103235009A (en) | Portable combustible gas detector | |
| CN201417180Y (en) | Temperature and humidity detection alarm | |
| CN207649856U (en) | A kind of fuel cell bipolar plate tightness detection device | |
| CN102384360B (en) | Mine lamp with functions of displaying carbon monoxide concentration in digitized way, detecting carbon monoxide concentration and alarming | |
| CN202256247U (en) | Multifunction handheld harmful gas detector | |
| CN206609846U (en) | A kind of portable gas detector | |
| CN210920969U (en) | Portable natural gas leakage detector | |
| CN200944255Y (en) | Current cycle checking device for oil field wireless remote sensing pumping unit | |
| CN106768654A (en) | A kind of multifunctional gas quantitative leak detector | |
| CN201749004U (en) | Hand-held SF6 gas quantitative leakage detection instrument | |
| CN202195838U (en) | Multi-parameter measuring device for coal mine gas extraction pipeline | |
| CN205919876U (en) | Portable liquid level measurement device and liquid level measurement circuit of piercing through of high sensitivity | |
| CN206470378U (en) | Power of computer room monitoring device | |
| CN204374132U (en) | A kind of practical water quality testing meter | |
| CN207704619U (en) | A kind of carbonic oxide alarming detector | |
| CN204719036U (en) | A kind of novel portable water body detecting device | |
| CN211553977U (en) | Gas detection device | |
| CN207636575U (en) | A kind of accurate safe and portable residual toxicity rapid test appearance | |
| CN202486085U (en) | Methane carbon monoxide tester | |
| CN205405821U (en) | Alarming monitoring device is leaked in intelligence gas | |
| CN205374576U (en) | Automatically controlled board test device of fixed frequency air conditioner | |
| CN203241369U (en) | Portable combustible gas detection instrument | |
| CN213810057U (en) | Multifunctional portable gas leak detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |