CN111933886A - Filling gun capable of automatically identifying liquid level - Google Patents
Filling gun capable of automatically identifying liquid level Download PDFInfo
- Publication number
- CN111933886A CN111933886A CN202010799103.4A CN202010799103A CN111933886A CN 111933886 A CN111933886 A CN 111933886A CN 202010799103 A CN202010799103 A CN 202010799103A CN 111933886 A CN111933886 A CN 111933886A
- Authority
- CN
- China
- Prior art keywords
- water
- gun
- liquid level
- filling
- probe
- 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.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a filling gun capable of automatically identifying liquid level, which comprises a gun body, a sensor assembly, an indicating device and a controller, wherein the sensor assembly is arranged on the gun body; the gun body comprises a water gun and a supporting part, and the supporting part is arranged at a water outlet of the water gun; the sensor assembly and the indicating device are respectively fixedly arranged on the supporting part; the controller is electrically connected with the sensor assembly and the indicating device respectively. The gun body can provide a liquid channel for injecting distilled water into the automobile storage battery; the sensor assembly can automatically identify the liquid level height in the storage battery to form a liquid level signal. The controller can analyze the liquid level signal, and if the filled distilled water reaches the specified liquid level, the controller finishes filling by stopping supplying water filling power to the water gun. After the specified liquid level is reached, the controller can control the indicating device to give an early warning so that the filling personnel can move the filling gun. The filling gun solves the technical problem that the traditional filling equipment cannot realize automatic detection and filling.
Description
Technical Field
The invention relates to the technical field of special equipment for filling distilled water into an automobile storage battery, in particular to a filling gun capable of automatically identifying liquid level.
Background
The electrolyte of the storage battery is prepared by mixing sulfuric acid and distilled water in proportion. In the use process of the storage battery, the temperature rises, and the storage battery is frequently charged and discharged, so that the proportion of the electrolyte is disordered, the concentration of sulfuric acid in the electrolyte is increased, and corrosion is formed. Therefore, a proper amount of distilled water is periodically added to the storage battery to compensate for water consumption. Only in this way, the normal charging and discharging functions of the electrolyte can be maintained, and the service life of the battery is prolonged.
At present, the automobile industry still uses traditional filling equipment to fill distilled water into the automobile storage battery, namely, a filling person fills distilled water into the automobile storage battery through a water gun or a manual self-sealing gun. Because different storage batteries need to be filled with different amounts of distilled water, when the storage batteries are filled with the distilled water, an operator is required to judge whether the filling is finished or not by observing, the requirement on the operator is higher, and meanwhile, the filling efficiency is lower, and if the experience of the operator is insufficient or the operation is improper, the situation that the actual filling liquid level is higher than or lower than the required liquid level height often occurs.
In view of this, it is a technical problem to be solved urgently in the field to provide a filling gun with high filling efficiency, high precision and strong practicability.
Disclosure of Invention
The invention aims to provide a filling gun capable of automatically identifying liquid level, which can automatically control the filling amount of distilled water in a storage battery by identifying the filling liquid level and solve the technical problem that the traditional filling equipment cannot realize automatic detection and filling.
The invention provides a filling gun capable of automatically identifying liquid level, which comprises a gun body, a sensor assembly, an indicating device and a controller, wherein the sensor assembly is arranged on the gun body;
the gun body comprises a water gun and a supporting part, and the supporting part is arranged at a water outlet of the water gun;
the sensor assembly and the indicating device are respectively fixedly arranged on the supporting component;
the controller is electrically connected with the sensor assembly and the indicating device respectively.
In the present invention, the gun body is a main component for filling distilled water into the battery. The water gun can provide a passage for filling distilled water, and the supporting component can not only provide a mounting position for the sensor assembly and the indicating device, but also protect a liquid passage in the gun body. When filling distilled water into the battery, the sensor assembly can monitor the filling liquid level of the distilled water, and a liquid level signal is formed. The liquid level signal is transmitted to the controller through a signal wire, and the controller can analyze the liquid level signal. If the distilled water reaches the preset standard liquid level line, the controller (PLC) finishes filling in a mode of stopping providing water injection power for the water gun (namely, controls the starting and stopping of the pump to regulate and control the filling work of the water gun). At this time, the controller can control the indicating device to send out a filling completion signal, and a filling technician removes the filling gun.
Furthermore, the gun body also comprises a conversion head, a quick-connection plug and a water passing hose;
the conversion head is arranged at a water outlet of the water gun, and the support component is sleeved on the conversion head;
the quick connector is arranged on the conversion head, one end of the water passing hose is connected with the quick connector, and the other end of the water passing hose penetrates through the supporting part and extends to the sensor assembly.
The supporting component is connected with the water outlet of the water gun through the conversion head. The water passing hose communicated with the water outlet of the water gun through the quick connector can provide a channel for filling distilled water.
Further, the sensor assembly includes a liquid level sensor and a probe;
the liquid level sensor is arranged at one end of the probe; the other end of the probe is fixedly arranged on the supporting component, and the other end of the water passing hose extends to the end of the probe.
The probe can be used as a water tap for water flowing out of the water hose and also can be used as a carrier of the liquid level sensor, and a storage space and a connecting channel are provided for a signal wire of the liquid level sensor. The probe is arranged at one end of the supporting component, and a signal wire of the liquid level sensor can be ensured to penetrate through the probe and reach the inside of the supporting component.
Further, the indicating device comprises an indicating lamp and a lamp holder; the indicating lamp is arranged on the lamp holder, and the lamp holder is fixedly arranged on the supporting part;
and a signal wire of the liquid level sensor sequentially penetrates through the probe and the supporting part, extends to the lamp holder and is connected with a lamp wire of the indicator lamp.
The lamp holder is arranged on the supporting part and can provide a fixing part for the indicator lamp. The signal line of the liquid level sensor is connected with the lamp line of the indicator light, and finally the indicator light is turned on when the filled distilled water reaches the standard liquid level.
Furthermore, the gun body also comprises a water inlet pipe joint seat, and the water inlet pipe joint seat is fixedly arranged at the water inlet of the water gun.
The water inlet pipe joint seat arranged at the water inlet of the water gun can provide a fixed part for other components.
Furthermore, the device also comprises a circuit protection tube, a circuit integrated block and an aviation socket;
the circuit integrated block is sleeved on the water pipe connector seat;
one end of the circuit protection tube is communicated with the lamp holder, and the other end of the circuit protection tube is communicated with the circuit integrated block;
one end of the aviation socket is fixedly arranged on the circuit integrated block; the circuit of the aviation socket sequentially penetrates through the circuit integrated block and the circuit protection tube and is connected with the signal wire and the lamp wire;
the other end of the aviation socket is electrically connected with the controller.
The line chip can provide storage space for lines that are routed from an airline socket. The other end of the aviation socket is electrically connected with the controller, and the circuit of the aviation socket is connected with the signal line of the liquid level sensor and the lamp line of the indicating lamp, so that the controller can control the on-off of the indicating lamp by analyzing the liquid level signal of the liquid level sensor.
Further, the device also comprises a cushion block, a sealing ring and a locking nut;
the cushion block is sleeved at one end of the water hose extending to the probe and is in close contact with the supporting part;
the locking nut is arranged on the probe and fixes the probe and the supporting component together; the sealing ring is arranged between the locking nut and the supporting component.
The cushion block plays a role in fixing the water passing hose. The probe is fixed with the supporting component through a locking nut. The sealing ring can prevent the distilled water from leaking outwards when the distilled water is filled.
Furthermore, a jackscrew is arranged on the circuit integrated block and fixes the circuit integrated block and the water pipe joint seat.
The line manifold block is tightly fixed on the water pipe joint seat through a jackscrew.
Further, the device also comprises a first joint and a second joint;
one end of the circuit protection tube is communicated with the lamp holder through the first connector;
the other end of the circuit protection pipe is communicated with the circuit integrated block through the second connector.
The first connector and the second connector are used for communicating the lamp holder, the circuit protection tube and the circuit integrated block.
The filling gun capable of automatically identifying the liquid level comprises a gun body, a sensor module and an indicating device. The gun body can provide a liquid channel for injecting distilled water into the automobile storage battery; the sensor assembly can automatically identify the liquid level height in the storage battery to form a liquid level signal. The controller can analyze the liquid level signal, and if the filled distilled water reaches the specified liquid level, the controller finishes filling by stopping supplying water filling power to the water gun. After the specified liquid level is reached, the controller can control the indicating device to give an early warning so that the filling personnel can move the filling gun. The invention reduces the skill requirement on filling personnel, improves the filling efficiency and has higher practicability. In addition, the filling gun provided by the invention is used for filling distilled water into the storage battery, and has the advantage of high precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic overall view of a filling gun of the present invention that automatically identifies fluid level;
fig. 2 is a partial schematic view of the filling gun capable of automatically identifying the liquid level provided by the invention.
Description of reference numerals:
1: a controller; 2: a water gun; 3: a support member; 4: a conversion head; 5: a quick connector; 6: a water hose; 7: a liquid level sensor; 8: a probe; 9: an indicator light; 10: a lamp socket; 11: a water inlet pipe joint seat; 12: a circuit protection pipe; 13: a circuit integrated block; 14: an aviation socket; 15: cushion blocks; 16: a seal ring; 17: locking the nut; 18: carrying out top thread; 19: a first joint; 20: a second joint.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms also include the plural forms unless the context clearly dictates otherwise, and further, it is understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2: a filling gun capable of automatically identifying liquid level comprises a gun body, a sensor assembly, an indicating device and a controller 1;
the gun body comprises a water gun 2 and a supporting part 3, and the supporting part 3 is arranged at a water outlet of the water gun 2;
the sensor assembly and the indicating device are respectively fixedly arranged on the supporting part 3;
the controller 1 is electrically connected to the sensor assembly and the indicating device, respectively.
On the basis of the scheme, in order to better realize the filling of distilled water into the filling gun, the gun body also comprises a conversion head 4, a quick-connection-peg 5 and a water-passing hose 6;
the conversion head 4 is arranged at the water outlet of the water gun 2, and the support component 3 is sleeved on the conversion head 4;
the quick-connection-peg 5 is arranged on the conversion head 4, one end of the water passing hose 6 is connected with the quick-connection-peg 5, and the other end of the water passing hose 6 penetrates through the supporting component 3 and extends to the sensor assembly.
The supporting component 3 is fixedly connected with the water gun 2 through the conversion head 4. One end of a quick connector 5 arranged on the conversion head 4 is communicated with a water outlet of the water gun 2, and the other end is communicated with a water passing hose 6. Therefore, distilled water can sequentially pass through the water outlet of the water gun 2 and the water passing hose 6 and is injected into the automobile storage battery at the position of the sensor assembly.
In order to function as a sensor assembly to monitor liquid level, a preferred sensor assembly includes a level sensor 7 and a probe 8;
the liquid level sensor 7 is arranged at one end of the probe 8; the other end of the probe 8 is fixedly arranged on the supporting part 3, and the other end of the water hose 6 extends to the end of the probe 8.
The level sensor 7 is preferably an optoelectronic level sensor which contains a near infrared light emitting diode and a light sensitive receiver inside. The light emitted by the light emitting diodes is directed into a lens on top of the sensor. When the lens of the photoelectric liquid level switch is immersed in the distilled water, the light is refracted into the distilled water, so that the receiver cannot receive or can receive only a small amount of light. The level sensor 7 is fixed on the support part 3 by a probe 8, and the probe 8 can provide a channel for a data line extending from the level sensor 7.
On the basis of the scheme, in order to realize the prompting function of the indicating device, the indicating device comprises an indicating lamp 9 and a lamp holder 10; the indicator light 9 is arranged on the lamp holder 10, and the lamp holder 10 is fixedly arranged on the supporting part 3;
the signal line of the liquid level sensor 7 passes through the probe 8 and the support member 3 in sequence, extends to the lamp holder 10, and is connected with the lamp line of the indicator lamp 9.
The liquid level signal that level sensor 7 formed is transmitted to controller 1, and controller 1 analysis distilled water filling is accomplished the back, can turn on pilot lamp 9.
In order to provide a fixed part for other components, the gun body further comprises a water inlet joint seat 11 which is fixedly arranged at the water inlet of the water gun 2.
The water joint base 11 can provide a fixing part for other components.
On the basis of the scheme, the air-conditioning device preferably further comprises a line protective pipe 12, a line integrated block 13 and an aviation socket 14;
the circuit integrated block 13 is sleeved on the water pipe joint seat;
one end of the circuit protection tube 12 is communicated with the lamp holder 10, and the other end is communicated with the circuit integrated block 13;
one end of the aviation socket 14 is fixedly arranged on the circuit integrated block 13; the circuit of the aviation socket 14 sequentially passes through the circuit integrated block 13 and the circuit protective tube 12 and is connected with the signal line and the lamp line;
the other end of the aviation socket 14 is electrically connected with the controller 1.
The line chip 13 can provide storage space for lines exiting the airline socket 14. The other end of the aviation socket 14 is electrically connected with the controller 1, and the circuit of the aviation socket 14 is connected with the signal line of the liquid level sensor 7 and the lamp line of the indicator lamp 9, so that the controller 1 can analyze the liquid level signal of the liquid level sensor 7 to control the on-off of the indicator lamp 9.
On the basis of the above scheme, in order to fix the water hose 6 and prevent the distilled water from leaking out during filling, the water hose preferably further comprises a cushion block 15, a sealing ring 16 and a locking nut 17;
the cushion block 15 is sleeved at one end of the water hose 6 extending to the probe 8 and is tightly contacted with the supporting part 3;
a lock nut 17 is provided on the probe 8 and fixes the probe 8 and the support member 3 together; a sealing ring 16 is arranged between the lock nut 17 and the support member 3.
The spacer 15 serves to fix the water hose 6. The probe 8 is fixed with the support member 3 by a lock nut 17. The packing 16 prevents the distilled water from leaking out during filling.
In order to tightly fix the circuit manifold block 13 to the water pipe joint seat, on the basis of the above scheme, the circuit manifold block 13 is provided with a jackscrew 18, and the jackscrew 18 fixes the circuit manifold block 13 and the water pipe joint seat.
More preferably, in order to communicate the lamp socket 10, the line protection tube 12 and the line manifold 13, a first connector 19 and a first connector 20 are further included;
one end of the line protection tube 12 is communicated with the lamp holder 10 through a first connector 19;
the other end of the line sheath 12 communicates with the line manifold 13 through the first joint 20.
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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A filling gun capable of automatically identifying liquid level is characterized by comprising a gun body, a sensor assembly, an indicating device and a controller (1);
the gun body comprises a water gun (2) and a supporting part (3), and the supporting part (3) is arranged at a water outlet of the water gun (2);
the sensor assembly and the indicating device are respectively fixedly arranged on the supporting part (3);
the controller (1) is electrically connected with the sensor assembly and the indicating device respectively.
2. The filling gun capable of automatically identifying the liquid level according to claim 1, wherein the gun body further comprises a conversion head (4), a quick-connect joint (5) and a water passing hose (6);
the conversion head (4) is arranged at a water outlet of the water gun (2), and the support component (3) is sleeved on the conversion head (4);
the quick-connection-peg (5) is arranged on the conversion head (4), one end of the water passing hose (6) is connected with the quick-connection-peg (5), and the other end of the water passing hose (6) penetrates through the supporting component (3) and extends to the sensor assembly.
3. Filling gun with automatic level identification according to claim 2, characterized in that the sensor assembly comprises a level sensor (7) and a probe (8);
the liquid level sensor (7) is arranged at one end of the probe (8); the other end of the probe (8) is fixedly arranged on the supporting part (3), and the other end of the water passing hose (6) extends to the end of the probe (8).
4. Filling gun with automatic level identification according to claim 3, characterized in that the indicating means comprise an indicator light (9) and a lamp holder (10); the indicator light (9) is arranged on the lamp holder (10), and the lamp holder (10) is fixedly arranged on the supporting part (3);
and a signal wire of the liquid level sensor (7) sequentially penetrates through the probe (8) and the supporting part (3), extends to the lamp holder (10), and is connected with a lamp wire of the indicator lamp (9).
5. The filling gun with automatic level recognition according to claim 4, characterized in that the gun body further comprises a water inlet pipe joint seat (11) fixedly arranged at the water inlet of the water gun (2).
6. The filling gun with automatic liquid level identification function according to claim 5, characterized by further comprising a line protective tube (12), a line manifold block (13) and an aviation socket (14);
the circuit integrated block (13) is sleeved on the water pipe joint seat;
one end of the circuit protection tube (12) is communicated with the lamp holder (10), and the other end of the circuit protection tube is communicated with the circuit integrated block (13);
one end of the aviation socket (14) is fixedly arranged on the circuit integrated block (13); the circuit of the aviation socket (14) sequentially penetrates through the circuit integrated block (13) and the circuit protection tube (12) and is connected with the signal wire and the lamp wire;
the other end of the aviation socket (14) is electrically connected with the controller (1).
7. The filling gun capable of automatically identifying the liquid level according to claim 5, further comprising a cushion block (15), a sealing ring (16) and a locking nut (17);
the cushion block (15) is sleeved at one end of the water passing hose (6) extending to the probe (8) and is tightly contacted with the supporting part (3);
the locking nut (17) is arranged on the probe (8) and fixes the probe (8) and the supporting component (3) together; the sealing ring (16) is arranged between the locking nut (17) and the supporting component (3).
8. The filling gun capable of automatically identifying the liquid level as in claim 6, wherein a jackscrew (18) is arranged on the circuit manifold block (13), and the jackscrew (18) fixes the circuit manifold block (13) and the water pipe joint seat.
9. Filling gun with automatic level identification according to claim 8, characterized in that it further comprises a first joint (19) and a second joint (20);
one end of the line protection tube (12) is communicated with the lamp holder (10) through the first connector (19);
the other end of the line protection pipe (12) is communicated with the line integrated block (13) through the second connector (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799103.4A CN111933886B (en) | 2020-08-11 | 2020-08-11 | Filling gun capable of automatically identifying liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799103.4A CN111933886B (en) | 2020-08-11 | 2020-08-11 | Filling gun capable of automatically identifying liquid level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111933886A true CN111933886A (en) | 2020-11-13 |
| CN111933886B CN111933886B (en) | 2021-10-29 |
Family
ID=73308171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010799103.4A Active CN111933886B (en) | 2020-08-11 | 2020-08-11 | Filling gun capable of automatically identifying liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111933886B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203556483U (en) * | 2013-10-24 | 2014-04-23 | 林初明 | Self-sealing filling gun |
| CN204732471U (en) * | 2015-06-26 | 2015-10-28 | 上海宏信设备工程有限公司 | A kind of storage battery distilled water adding set |
| CN210349961U (en) * | 2019-10-16 | 2020-04-17 | 林德（中国）叉车有限公司 | Storage battery water adding device and storage battery water adding trolley |
-
2020
- 2020-08-11 CN CN202010799103.4A patent/CN111933886B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203556483U (en) * | 2013-10-24 | 2014-04-23 | 林初明 | Self-sealing filling gun |
| CN204732471U (en) * | 2015-06-26 | 2015-10-28 | 上海宏信设备工程有限公司 | A kind of storage battery distilled water adding set |
| CN210349961U (en) * | 2019-10-16 | 2020-04-17 | 林德（中国）叉车有限公司 | Storage battery water adding device and storage battery water adding trolley |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111933886B (en) | 2021-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111933886B (en) | Filling gun capable of automatically identifying liquid level | |
| EP0746046B1 (en) | Electrolyte level sensing and automatic topping up apparatus for storage wet cell | |
| CN110615196A (en) | Oiling machine leakage detection and air return fault detection system | |
| CN115371747A (en) | Electromagnetic water meter and air tightness monitoring method thereof | |
| CN211374445U (en) | Porous medium low-pressure displacement microscopic visual observation system | |
| CN106092259A (en) | For the method monitoring the function of the rinsing table of liquid-transfering needle | |
| CN214667491U (en) | Oil gas recovery multi-parameter detection device of gas station | |
| CN206419198U (en) | The detection device of fire-fighting equipment | |
| CN104297178A (en) | Detection device and online water quality detection system provided with detection device | |
| CN214190154U (en) | Unmanned aerial vehicle oil tank self-cleaning and test device | |
| US7523645B2 (en) | Water detector probe | |
| CN209843736U (en) | Acid etching additive liquid supplementing device for photovoltaic silicon wafer wet cleaning process | |
| US11073054B2 (en) | Technique for collecting and measuring oil drained from a vehicle | |
| CN108007705B (en) | Humidification quantity measuring device for air conditioner | |
| CN216928694U (en) | Liquid feeding cover structure of lead-acid storage battery capable of monitoring liquid level | |
| CN220224645U (en) | Liquid detector, detergent throwing device and washing equipment | |
| CN215851970U (en) | Helicopter fuel system test equipment device | |
| CN210883631U (en) | Oiling machine leakage detection and air return fault detection system | |
| CA3049881C (en) | Temperature and voltage controlled multi-level battery electrolyte level monitor | |
| CN209778286U (en) | Oil field uninterrupted oil transportation control device | |
| CN116873852B (en) | Nine-in-one quantitative oiling machine | |
| CN219865191U (en) | Generating set and engine oil automatic supplementing device thereof | |
| CN220930823U (en) | Oiling system | |
| JP2010078454A (en) | Flow tester | |
| CN217843484U (en) | Mobile hydrogen quality detection vehicle for hydrogenation station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |