CN223050805U - Valve leak hunting device - Google Patents
Valve leak hunting device Download PDFInfo
- Publication number
- CN223050805U CN223050805U CN202422075052.7U CN202422075052U CN223050805U CN 223050805 U CN223050805 U CN 223050805U CN 202422075052 U CN202422075052 U CN 202422075052U CN 223050805 U CN223050805 U CN 223050805U
- Authority
- CN
- China
- Prior art keywords
- component
- valve
- alarm
- pressure
- communication
- 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
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a valve leakage detection device, relates to the field of semiconductor part testing, and aims to solve the problem that a plurality of valves are inconvenient to leak for a long time at the same time. The valve leakage detection device comprises a plurality of accommodating grooves, alarm parts, pressure detection assemblies, timing parts, communication parts and a power supply, wherein each accommodating groove is used for accommodating one valve to be detected, each accommodating groove is internally provided with the alarm part which is used for sending alarm characteristics and position signals, each accommodating groove is internally provided with the pressure detection assemblies which are used for detecting whether the valve to be detected leaks or not, each accommodating groove is internally provided with the timing parts which are used for presetting detection time and triggering the alarm parts when the detection time is reached, the communication parts are arranged in the accommodating grooves and are in communication connection with the alarm parts and are used for receiving the position signals and transmitting the position signals to a user terminal or a cloud server, and the power supply is in conductive connection with the parts.
Description
Technical Field
The utility model relates to the field of semiconductor part testing, in particular to a valve leakage detection device.
Background
In the production process of semiconductors, the leakage of the pipe valve member and the particulate matters are required to be high, if leakage occurs, the chip yield is likely to be reduced, and even the leakage of toxic and harmful gas can cause the danger of the lives of operators.
After the production of a semiconductor-grade valve, it needs to be subjected to stringent testing. The test method comprises the steps of firstly, introducing test gas into a device formed by a valve to be tested, smearing leakage detection liquid to a position where leakage of the valve is likely to occur, observing whether bubbles are generated, if no bubbles exist, representing that the valve is not leaked, then, carrying out short-time leakage detection by using a leakage detection device, wherein the short time can be three minutes, and the like, then, carrying out long-time leakage detection by using the leakage detection device, wherein the long time can be twelve hours or twenty four hours, and the like, and finally, carrying out helium detection.
When the leakage detection is carried out for a long time, the leakage detection of the valve is not easy to realize if the leakage detection device is still used as a short-time handheld leakage detection device, the leakage detection device and the valve to be detected are arranged beside the leakage detection device for a long time and are easy to forget, and the valve to be detected can be taken back after the set time is finished if an alarm clock is arranged at the position of the valve for the long-time leakage detection. However, when a plurality of valves are tested simultaneously, people cannot know which alarm clock sound is transmitted, which causes inconvenience when the valves are tested simultaneously for a long time.
Disclosure of utility model
The utility model aims to provide a valve leakage detection device which is used for solving the problem that the leakage detection of a plurality of valves is inconvenient when the leakage detection of the valves is carried out for a long time.
In order to achieve the above object, the present utility model provides the following technical solutions:
A valve leak detection apparatus comprising:
the device comprises a plurality of accommodating grooves, a plurality of valve to be tested and a plurality of valve to be tested, wherein each accommodating groove is used for accommodating one valve to be tested;
The alarm parts are arranged in each accommodating groove and used for sending out alarm characteristics and position signals, and the position signals comprise position information of the corresponding accommodating grooves;
The pressure detection assembly is arranged in each accommodating groove and is in communication connection with the alarm component, and is used for detecting the pressure at the valve to be detected so as to detect whether the valve to be detected leaks or not, and when the valve to be detected leaks, the alarm component is triggered to send alarm characteristics and position signals;
The timing component is arranged in each accommodating groove and is in communication connection with the alarm component, and the timing component is used for presetting detection time and triggering the alarm component to send alarm characteristics and position signals when the detection time is reached;
The communication component is arranged in the accommodating groove, is in communication connection with the alarm component, and is used for receiving the position signal and transmitting the position signal to the user terminal or the cloud server;
And the power supply is respectively and conductively connected with the alarm component, the pressure detection component, the timing component and the communication component.
Under the condition of adopting the technical scheme, the valve to be detected is arranged in the accommodating groove, the power supply is turned on, all the components start to work, the pressure detection component is used for detecting the pressure at the valve to be detected and is used for detecting whether the valve to be detected leaks, when the valve leaks, the pressure detection component triggers the alarm component which is in communication connection with the pressure detection component to enable the valve to be detected to alarm, the alarm component is triggered to display the alarm characteristic, the position signal of the valve to be detected which leaks is transmitted to the user terminal or the cloud server through the communication component which is in communication connection with the alarm component, or an observation time is preset for the timing component, when the observation time is reached, the timing component triggers the alarm component which is in communication connection with the timing component to enable the alarm component to alarm, the alarm component is triggered to display the alarm characteristic, and the position signal of the valve to be detected which reaches the detection time is transmitted to the user terminal or the cloud server through the communication component which is in communication connection with the pressure detection component, and when the detection of a plurality of valves is carried out, the valve leakage detection device provided by the utility model can be arranged, and the alarm detection device can be accurately distinguished by operators. Therefore, the utility model can assist the valve to accurately detect leakage for a long time, is convenient to use and has high user experience.
Optionally, in the above valve leak detection apparatus, the alarm part includes:
The alarm part is used for sending out sound alarm characteristics and/or light alarm characteristics;
And the communication part is in communication connection with the communication component and is used for sending a position signal to the communication component.
Optionally, in the above valve leak detection apparatus, the pressure detection means includes:
the air pump is used for introducing air into the valve to be tested;
the two pressure sensors are respectively arranged at the gas inlet end and the gas outlet end of the valve to be detected and are respectively used for detecting the inlet pressure and the outlet pressure of the valve to be detected;
The pressure detection component is in communication connection with the pressure sensors and is in communication connection with the alarm component, and the pressure detection component is used for triggering the alarm component according to the difference change of the pressures detected by the two pressure sensors.
Optionally, in the above valve leak detection device, the pressure detection assembly further includes a check valve, and the check valve is disposed at a gas inlet end of the valve to be detected and is used for guiding the test gas to the valve to be detected.
Optionally, in the above valve leak detection device, the pressure detection assembly further includes a switch valve, and the switch valve is disposed at a gas inlet end of the valve to be detected and is used for controlling the opening and closing of the pressure detection assembly.
Optionally, in the above valve leak detection device, the valve leak detection device further includes a gas detection component, each of the accommodating grooves is provided with a gas detection component, the gas detection component is connected with the alarm component in a communication manner, and the gas detection component is used for triggering the alarm component when detecting the leaked gas in the accommodating groove.
Optionally, in the above-mentioned valve leak hunting device, the valve leak hunting device still includes weighing part, all is provided with weighing part in every accommodation groove, weighing part and power conductive connection, and weighing part is used for supporting pressure detection subassembly and valve that awaits measuring, when pressure detection subassembly and valve that awaits measuring are placed on weighing part, and weighing part is triggered, opens the power supply.
Optionally, in the valve leak detection device, the plurality of accommodating grooves are arranged in a rectangular array.
Optionally, in the valve leak detection device, the number of the communication components is one or more, and a plurality of alarm components are connected to one communication component in a communication manner.
Optionally, in the valve leak detection device, the number of the power sources is one or more, and the power sources are electrically connected with the alarm component, the pressure detection component, the timing component and the communication component in the one or more accommodating grooves.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a top view of a valve leak detection system according to an embodiment of the utility model;
Fig. 2 is a front view of a valve leak detection system according to an embodiment of the utility model;
FIG. 3 is a partial enlarged top view of a valve leak detection system according to an embodiment of the utility model;
fig. 4 is a partially enlarged front view of a valve leak detection system according to an embodiment of the utility model.
The reference sign is 1a containing groove, 2 an alarm component, 3 a pressure detection component, 31a one-way valve, 32 a pressure sensor, 33 a switch valve, 34 a pressure detection component, 4a timing component, 5a communication component, 6 a power supply, 7 a gas detection component, 8 a weighing component and 9 a valve to be tested.
Detailed Description
In order to clearly describe the technical solution of the embodiments of the present utility model, in the embodiments of the present utility model, the words "first", "second", etc. are used to distinguish the same item or similar items having substantially the same function and effect. For example, the first threshold and the second threshold are merely for distinguishing between different thresholds, and are not limited in order. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.
In the present utility model, the words "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
In the present utility model, "at least one" means one or more, and "a plurality" means two or more. "and/or" describes an association of associated objects, meaning that there may be three relationships, e.g., A and/or B, and that there may be A alone, while A and B are present, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (a, b or c) of a, b, c, a and b combination, a and c combination, b and c combination, or a, b and c combination, wherein a, b and c can be single or multiple.
Referring to fig. 1, the valve leak detection device provided by the embodiment of the utility model comprises a plurality of accommodating grooves 1, alarm parts 2, pressure detection assemblies 3, a timing part 4, communication parts 5 and a power supply 6, wherein each accommodating groove 1 is used for accommodating one valve 9 to be detected, each accommodating groove 1 is internally provided with the alarm part 2, the alarm part 2 is used for sending out alarm characteristics and position signals, the position signals comprise position information of the corresponding accommodating groove 1, each accommodating groove 1 is internally provided with the pressure detection assemblies 3, the pressure detection assemblies 3 are in communication connection with the alarm part 2, the pressure detection assemblies 3 are used for detecting the pressure at the valve 9 to be detected to detect whether the valve 9 to be detected leaks, the alarm part 2 is triggered to send out alarm characteristics and position signals when the valve 9 to be detected leaks, the timing part 4 is arranged in each accommodating groove 1 and is in communication connection with the alarm part 2, the timing part 4 is used for presetting detection time and triggering the alarm part 2 to send out alarm characteristics and position signals when the detection time is reached, the communication part 5 is arranged in the accommodating groove 1, the communication part 5 is in each accommodating groove 5, the communication part 5 is in communication part 5 is connected with the communication part 2 and the communication part 5 is used for receiving the alarm signals from the communication part 5 and the communication terminal and the communication part 3 or the communication part 6 is connected with the power supply terminal and the communication part 6.
In the specific implementation, the valve 9 to be tested is placed in the accommodating groove 1, the power supply 6 is started to supply power to all the components, all the components start to work, the pressure detection assembly 3 is used for detecting the pressure at the valve 9 to be tested to detect whether the valve 9 to be tested leaks, when the valve leaks, the pressure detection assembly 3 triggers the alarm component 2 which is in communication connection with the valve to be tested to alarm, the alarm component 2 is triggered to display an alarm characteristic, a position signal of the valve 9 to be tested which leaks is transmitted to a user terminal or a cloud server through the communication component 5 which is in communication connection with the valve to be tested, or an observation time is preset for the timing component 4, when the observation time is reached, the timing component 4 triggers the alarm component 2 which is in communication connection with the valve to alarm, the alarm component 2 is triggered to display the alarm characteristic, and the position signal of the valve 9 to be tested which reaches the detection time is transmitted to the user terminal or the cloud server through the communication component 5 which is in communication connection with the valve to be tested, and when the detection of a plurality of valves is performed, the leakage detection valve can be accurately distinguished by setting the valve device provided by the utility model, and the position signal can be transmitted to the user terminal or the cloud server through the communication component 5 to the user terminal to distinguish the leakage valve. Therefore, the utility model can assist the valve to accurately detect leakage for a long time, is convenient to use and has good user experience.
As a possible implementation, the alarm part 2 comprises an alarm part for emitting an audible alarm feature and/or an optical alarm feature, and a communication part in communication connection with the communication part 5 for emitting a position signal to the communication part 5.
The alarm portion includes an acoustic alarm unit and/or an optical alarm unit, and the alarm portion is configured to emit an acoustic alarm feature or emit an optical alarm feature, or the alarm portion emits an acoustic alarm feature and an optical alarm feature at the same time, where specific features of the acoustic alarm feature and the optical alarm feature are not limited, meaning that the acoustic alarm feature may be a beep or a booming sound or other noise for warning, and the optical alarm feature may be a red light or a blue light or other light for warning. In some embodiments, the specific characteristics of the audible/visual alarm feature may be manually adjusted.
It should be noted that, a self-checking component is disposed in the alarm component 2, specifically, after a certain preset time, the self-checking component detects whether the current value or the voltage value in the sound alarm unit or the light alarm unit deviates from the preset current value or voltage value, and judges whether the sound alarm function or the light alarm function has a fault according to the current value and the voltage value, and if the fault has a fault, a fault prompt is sent.
In the specific implementation, when the alarm part 2 is triggered, the alarm part sends out an acoustic alarm characteristic and/or an optical alarm characteristic, so that the position of the valve 9 to be detected, which is leaked, is conveniently observed nearby manually, meanwhile, when the alarm part 2 is triggered, the communication part transmits a position signal to the communication part 5 in communication connection with the alarm part, and then the position signal is transmitted to a user terminal or a cloud server by the communication part 5, and the position signal comprises the position information of the accommodating groove 1, so that the specific valve 9 to be detected can be known in a remote way.
As a possible implementation manner, the pressure detecting assembly 3 includes two pressure sensors 32 and a pressure detecting component 34, where the two pressure sensors 32 are respectively disposed at a gas inlet end and a gas outlet end of the valve 9 to be detected and are respectively used to detect an inlet pressure and an outlet pressure of the valve 9 to be detected, and the pressure detecting component 34 is communicatively connected to the pressure sensors 32 and is communicatively connected to the alarm component 2 and is used to trigger the alarm component 2 according to a difference change of the pressures detected by the two pressure sensors 32.
Specifically, two pressure sensors 32 are respectively installed at the gas inlet and the gas outlet of the valve 9 to be tested, and are used for detecting gas pressure signals of the inlet and the outlet and transmitting the gas pressure signals to a pressure detection component 34, the pressure detection component 34 calculates the pressure difference between the inlet and the outlet according to the gas pressure signals, under the premise of not adjusting the control valve, the gas inlet pressure of the valve 9 to be tested is greater than the gas outlet pressure, P 1、P2 is obtained by detecting the inlet and outlet pressure through the two pressure sensors 32, and then according to the calculation formula of the pressure difference:
P=P1-P2
Wherein, P 1 is the pressure value at the inlet of the valve 9 to be tested, P 2 is the pressure value at the outlet of the valve 9 to be tested, and the pressure difference is obtained by subtracting the pressure value at the outlet from the pressure value at the inlet. If the pressure difference is smaller than the threshold value, the leakage condition of the valve 9 to be tested is represented. The pressure detection unit 34 then transmits a leak message of the valve 9 to be tested to the alarm unit 2 connected in communication therewith, the alarm unit 2 being triggered to emit an alarm characteristic and a position signal. It should be noted that, the common processing method of obtaining the differential pressure according to the pressure signal detected by the pressure sensor 32 and comparing the differential pressure with the threshold value is a common device combination formed by the common pressure sensor 32 and the component with computing processing capability, and the method does not belong to improvement of the control program, but only connects the common component, so as to play a corresponding function.
Further, the pressure detecting assembly 3 further includes a check valve 31, where the check valve 31 is disposed at the gas inlet end of the valve 9 to be detected, and is used for guiding the test gas to the valve 9 to be detected.
When the leak detection of the valve 9 to be detected is carried out, a check valve 31 is arranged at the inlet end of the test gas of the valve 9 to be detected, and the check valve 31 is used for controlling the flow direction of the test gas when an external gas source is connected, so that the leak detection of the gas is successfully completed.
Further, the pressure detecting assembly 3 further includes an on-off valve 33, and the on-off valve 33 is disposed at the gas outlet end of the valve 9 to be detected, for controlling the opening and closing of the pressure detecting assembly 3. Namely, a switch valve 33 is arranged at the gas outlet end of the valve 9 to be detected, and when the leak detection of the valve 9 to be detected is carried out, the working state of the pressure detection assembly 3 can be adjusted by adjusting the opening and closing states of the switch valve 33, so that the valve is simple and easy to adjust and control.
It should be noted that, in the case that the pressure detecting assembly 3 only includes the pressure sensor 32 and the pressure detecting component 34, the test gas may be introduced into the valve 9 to be detected by always using an external gas source, so that the leak detection operation of the valve 9 to be detected is completed, where the external gas source may be a component such as an air pump.
As a possible implementation manner, the valve leak detection device further comprises a gas detection component 7, each accommodating groove 1 is internally provided with the gas detection component 7, the gas detection component 7 is in communication connection with the alarm component 2, and the gas detection component 7 is used for triggering the alarm component 2 when detecting the leaked gas in the accommodating groove 1. Specifically, in this embodiment, the gas detecting part 7 is a catalytic combustion type sensor, the catalytic combustion type sensor comprises a control unit, a sensor and the like, the sensor is composed of a detecting unit and a compensating unit, the detecting unit and the compensating unit are balanced in resistance in clean air when no detected gas leaks, when the detected gas leaks into the air, the combustible detected gas enters the sensor to react with the detecting unit in a flameless combustion mode, the temperature rises, the temperature in the compensating unit is kept unchanged, the resistance balance is damaged due to temperature difference, a change signal is amplified through a differential operational amplifier and is output to the control unit, and the control unit outputs the signal to the alarm part 2 so as to realize the alarm function of the alarm part 2.
In this embodiment, the type of the test gas is limited, and the test gas should be detected by the gas detecting member 7, which has the advantages that if the valve 9 to be detected leaks, the test gas leaks into the accommodating groove 1, the leaked test gas is detected by the gas detecting member 7, the gas detecting member 7 alarms the alarm member 2 connected with the gas detecting member in a communication manner, and since the external mode of the specific test gas can only be detected by the valve leakage, if the alarm member 2 alarms, the leakage of the valve 9 to be detected can be accurately and timely detected.
As a possible implementation manner, the valve leak detection device further comprises weighing components 8, each accommodating groove 1 is internally provided with a weighing component 8, the weighing components 8 are electrically connected with the power supply 6, the weighing components 8 are used for supporting the pressure detection assembly 3, when the pressure detection assembly 3 is placed on the weighing components 8, the weighing components 8 are triggered, and the power supply 6 is started to supply power.
Specifically, when placing pressure detection subassembly 3 on weighing part 8, weighing part 8 experiences the contact of pressure detection subassembly 3 to open power 6, as the beginning of valve leak hunting work, weighing part 8 plays the effect of a power 6 switch, only needs place pressure detection subassembly 3 on weighing part 8, weighing part 8 can open power 6 voluntarily, realizes the power supply work to each part, need not the manual work and opens each power 6, has simplified the operation when carrying out the valve leak hunting, has increased operating personnel's use experience.
The arrangement of the plurality of accommodating grooves 1 is in a rectangular array arrangement, specifically, the rectangular array is 1*1, 2 x 2 or 3*3, and the like, and the number of the valves 9 to be detected in different batches is considered in the specific arrangement, so that when the leakage detection of the plurality of valves 9 to be detected is performed, the plurality of valves are respectively arranged in the plurality of accommodating grooves 1 in a one-to-one correspondence manner, and the leakage detection of the plurality of valves 9 to be detected is performed simultaneously, thereby being efficient and accurate.
As a possible implementation, the number of communication units 5 is one or more, and a plurality of alarm units 2 are communicatively connected to one communication unit 5. The communication device is provided with only one communication part 5, the communication part 5 is in communication connection with a plurality of alarm parts 2 positioned in a plurality of accommodating grooves 1, when the pressure detection assembly 3 detects that the valve 9 to be detected leaks, the alarm part 2 positioned in the same accommodating groove 1 with the pressure detection assembly 3 transmits the position information of the leakage of the valve 9 to be detected to the communication part 5 for a user to know, when the timing part 4 reaches the preset detection time, the alarm part 2 positioned in the same accommodating groove 1 with the timing part 4 transmits the information of the time of the timing part 4 reaching the detection time to the communication part 5 for the user to know, when the gas detection part 7 detects that the valve 9 to be detected leaks, the alarm part 2 positioned in the same accommodating groove 1 with the gas detection part 7 transmits the position information of the leakage of the valve 9 to the communication part 5 for the user to know, and the communication part 5 can distinguish the position information transmitted by different alarm parts 2 so as to transmit the position information of the specific leakage valve to the user, or the position information of the accommodating groove 1 reaching the preset detection time of the timing part 4 to the user.
Further, the number of power sources 6 is one or more, it being understood that the power sources 6 provide power to the various components of the valve leak detection apparatus. The power source 6 may include a power management system, one or more power sources 6, and other components associated with generating, managing, and distributing power for the valve leak detection apparatus. Preferably, in the present embodiment, one power supply 6 may be used to electrically connect multiple components in different accommodating tanks 1 at the same time, which has the beneficial effects that the operating state of the valve leak detection device can be controlled only by controlling the power supply 6, thus simplifying the operation and increasing the use experience of operators.
Although the invention is described herein in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.
Although the invention has been described in connection with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made without departing from the spirit and scope of the invention. Accordingly, the specification and drawings are merely exemplary illustrations of the present invention as defined in the appended claims and are considered to cover any and all modifications, variations, combinations, or equivalents that fall within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422075052.7U CN223050805U (en) | 2024-08-26 | 2024-08-26 | Valve leak hunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422075052.7U CN223050805U (en) | 2024-08-26 | 2024-08-26 | Valve leak hunting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223050805U true CN223050805U (en) | 2025-07-01 |
Family
ID=96143696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422075052.7U Active CN223050805U (en) | 2024-08-26 | 2024-08-26 | Valve leak hunting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223050805U (en) |
-
2024
- 2024-08-26 CN CN202422075052.7U patent/CN223050805U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102227642B1 (en) | Smart valve | |
| EP3306292B1 (en) | Sensor unit and airtightness inspection device | |
| US10775259B2 (en) | Spray device and leak detection module | |
| RU2011136628A (en) | MANAGEMENT DEVICE, MANAGEMENT SYSTEM AND METHOD OF MANAGEMENT | |
| RU2008110526A (en) | METHOD AND DEVICE FOR DETECTING THE DEGREE OF INTENSITY OF WATER LEAKS | |
| US20200056793A1 (en) | Hvac monitoring apparatus and method | |
| KR102073028B1 (en) | Device for unmanned chemical detection | |
| CN217304901U (en) | Gas flowmeter or gas meter with laser detection combustible gas concentration | |
| US8201438B1 (en) | Detection of gas leakage | |
| GB2500998A (en) | A Testing System And Method For Performing Integrity Testing In A Gas Piping System | |
| EP3710803A1 (en) | Installation and method for detecting and locating a leak in a fluid transport circuit, notably of an aircraft | |
| US9118753B2 (en) | Autonomous systems for remote control of handheld devices | |
| CN223050805U (en) | Valve leak hunting device | |
| KR102176143B1 (en) | Boiler safety management device and boiler safety management system including the same | |
| CN113984711A (en) | Gas flow meter or gas meter with laser detection of combustible gas concentration and method | |
| US3802249A (en) | Method and apparatus for checking fire detectors | |
| BE1031091B1 (en) | Monitoring system for remote contactless diagnosis and control of automatic fire extinguishing devices for local protection of electrical devices | |
| CN213364158U (en) | Valve sealing performance testing system for nuclear power station | |
| CN211318408U (en) | An automatic detection device and system for liquid monitoring sensor state | |
| CN110333273B (en) | Detection system for providing standard gas for electrochemical sensor | |
| CN210665590U (en) | Air monitor with electrochemical sensor self-detection system | |
| WO2021258787A1 (en) | Endoscope capable of detecting fluid inflow, and fluid inflow test method for endoscope | |
| JP2004036937A (en) | Gas security equipment | |
| US20210140846A1 (en) | Method for checking water sealing of instrumentation for underwater use | |
| CN222687977U (en) | A multifunctional gas leak detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |