CN108036934A - exhaust pipe drainage performance detecting system - Google Patents
exhaust pipe drainage performance detecting system Download PDFInfo
- Publication number
- CN108036934A CN108036934A CN201711229749.3A CN201711229749A CN108036934A CN 108036934 A CN108036934 A CN 108036934A CN 201711229749 A CN201711229749 A CN 201711229749A CN 108036934 A CN108036934 A CN 108036934A
- Authority
- CN
- China
- Prior art keywords
- water
- exhaust pipe
- silencer
- level sensor
- pipe
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention provides a kind of exhaust pipe drainage performance detecting system, exhaust pipe includes tube body and silencer, system includes engine, first water filling component, second water filling component and some transparent cover plates, the one end of tube body away from silencer is connected with engine, exhaust pipe is equipped with some test points, the bottom of silencer is disposed with a test point, and a test point is arranged at each low level of tube body, exhaust pipe offers a peep hole on each test point, lid sets a transparent cover plate on each peep hole, the sealing of the outer wall of transparent cover plate and exhaust pipe is glued, first water filling component is connected with exhaust pipe, first water filling component is connected with the silencer.Exhaust pipe drainage performance detecting system in the present invention, it can carry out actual tests test to exhaust pipe, so that the exhaust pipe produced according to the parameter of the exhaust pipe of test passes, can possess good drainage performance, subsequently using not-easy-to-freeze.
Description
Technical field
The present invention relates to automobile technical field, more particularly to a kind of exhaust pipe drainage performance detecting system.
Background technology
Among the process of running car, engine will have steam generation, these steam will pass through the exhaust of engine
Pipe is discharged, and steam easily liquefies in exhaust pipe to the cold, so that there are ponding in exhaust pipe, particularly in the low of exhaust pipe
At position on (stringing is needed and produced), when winter is cold, these ponding will freeze, and block exhaust pipe, cause winter automobile
Difficulty in starting.
The reason for causing above-mentioned phenomenon is, among the prior art, shortage can carry out drainage performance detection to exhaust pipe
Device, among the production process of exhaust pipe, determined by operating personnel's experience or the mode of three-dimensional simulation
The drainage performance of exhaust pipe, causes the drainage performance of exhaust pipe substantive and bad, timely can not drain ponding.
The content of the invention
Based on this, the object of the present invention is to provide a kind of exhaust pipe drainage performance detecting system, to solve the above problems.
A kind of exhaust pipe drainage performance detecting system, the exhaust pipe include tube body and silencer, and the silencer card is set
In on an end of the tube body, the system comprises engine, the first water filling component, the second water filling component and some transparency covers
Plate, the one end of the tube body away from the silencer are connected with the engine, and the exhaust pipe is equipped with some test points, institute
The bottom for stating silencer is disposed with a test point, and a detection is arranged at each low level of the tube body
Point, the exhaust pipe offer a peep hole on each test point, and lid sets an institute on each peep hole
Transparent cover plate is stated, the outer wall sealing of the transparent cover plate and the exhaust pipe is glued, the first water filling component and the tube body
Connection, for the water filling into the tube body, the second water filling component is connected with the silencer, for into the silencer
Water filling.
Above-mentioned exhaust pipe drainage performance detecting system, when needing to carry out drainage performance test to exhaust pipe, passes through first
First water filling component and the second water filling component fill water into tube body and silencer respectively, then start engine, in engine
Scavenging action under, ponding in exhaust pipe and silencer will be discharged constantly from exhaust outlet, after being discharged there is no water, be closed
Engine, due to being respectively provided with the peep hole and transparency cover of mating reaction at each low level of the bottom of silencer and exhaust pipe
Plate, can observe the ponding feelings at each low level of silencer and tube body by corresponding peep hole and transparent cover plate at this time
Condition, if less without ponding or ponding at each low level of silencer and tube body, it is good to represent the drainage performance of exhaust pipe,
It is follow-up not-easy-to-freeze, it can subsequently be produced according to the parameter for the exhaust pipe currently tested, if there are some positions to contain more product
Water, it is not good enough to represent the drainage performance of exhaust pipe, follow-up easily to freeze, then needs the exhaust pipe relevant position to currently testing at this time
Parameter be adjusted, until reaching normal place.Therefore, the exhaust pipe drainage performance detecting system can to exhaust pipe into
Row actual tests are tested, so that the exhaust pipe produced according to the parameter of the exhaust pipe of test passes, can possess good
Drainage performance, subsequently using not-easy-to-freeze.
Further, the first water filling component includes the first water pump and the first water pipe, and the tube body is equipped with the first note
The mouth of a river, one end of first water pipe are connected with first water filling port, the other end of first water pipe and first water
Pump connection.
Further, the second water filling component includes the second water pump and the second water pipe, and the silencer is equipped with second
Water filling port, one end of second water pipe are connected with second water filling port, the other end of second water pipe and described second
Water pump connects.
Further, the water inlet end of first water pump and second water pump passes through a water inlet pipe and same water source respectively
Connection.
Further, the tube body includes first segment water pipe and second segment water pipe, and an end of the first segment water pipe is deep
Enter in the silencer, an end of the second segment water pipe is penetrated with the silencer, the end of the second segment water pipe
The height that end is penetrated with the silencer penetrates with the height in the silencer less than the end of the first segment water pipe.
Further, the first segment water pipe includes a vertical portion, and it is remote that the vertical portion is located at the first segment water pipe
One end of the silencer, the end of the vertical portion are connected with the engine, and first water filling port is arranged on described vertical
In portion.
Further, the system also includes controller and some first water level sensors, one of them described first water
Level sensor is arranged in the silencer, remaining described first water level sensor is arranged on the inner wall of the tube body, and often
A first water level sensor is faced with a test point;
The controller is electrically connected with each first water level sensor, is passed for receiving each first water level
The water level of the test point internal water accumulation on the correspondence position of sensor measurement.
Further, the water filling component further includes the second water level sensor, and second water level sensor is arranged on institute
State on the inner wall of vertical portion, and the height of the 3rd water level sensor is less than the height of first water filling port;
Second water level sensor is electrically connected with first water pump, when second water level sensor monitors institute
When stating the water accumulation level in tube body and reaching the first preset value, first water pump is closed.
Further, the second water filling component further includes the 3rd water level sensor, and the 3rd water level sensor is located at
In the silencer;
3rd water level sensor is electrically connected with second water pump, when the 3rd water level sensor monitors institute
When stating the water accumulation level in silencer and reaching the second preset value, second water pump is closed.
Further, the engine electrically connects with second water level sensor and the 3rd water level sensor respectively
Connect, when the water accumulation level that second water level sensor is monitored in the tube body reaches first preset value, and described
When three water level sensors monitor that the water accumulation level in the silencer reaches second preset value, the engine start.
Brief description of the drawings
Fig. 1 is the structure chart of the exhaust pipe drainage performance detecting system in first embodiment of the invention;
Fig. 2 is the enlarged drawing at I among Fig. 1;
Fig. 3 is the structure chart of the exhaust pipe drainage performance detecting system in second embodiment of the invention;
Fig. 4 is the enlarged drawing at II among Fig. 3.
Main element symbol description:
Following embodiment will combine above-mentioned attached drawing and further illustrate the present invention.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give some embodiments of the present invention.But the present invention can realize in many different forms, however it is not limited to this paper institutes
The embodiment of description.On the contrary, the purpose for providing these embodiments is made to the disclosure more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more phases
The arbitrary and all combination of the Listed Items of pass.
Please refer to Fig.1 to Fig. 2, the exhaust pipe drainage performance detecting system 100 showing in first embodiment of the invention, use
It is detected in the drainage performance to exhaust pipe 200, the exhaust pipe drainage performance detecting system 100 includes engine 10, the
One water filling component 20, the second water filling component 30 and three transparent cover plates 40.
The exhaust pipe 200 includes tube body 110 and silencer 120, and the silencer 120 is arranged in the tube body 110
On one end.Specifically, the tube body 110 includes first segment water pipe 1101 and second segment water pipe 1102, the first segment water pipe
1101 end is penetrated with the silencer 120, and the first segment water pipe 1101 includes a vertical portion 11011, described perpendicular
Straight portion 11011 is located at the one end of the first segment water pipe 1101 away from the silencer 120.In the first segment water pipe 1101
Portion is equipped with 11012 at two low levels, and 11012 be the position relatively low compared to the pipeline on both sides at the low level.The second segment
One end of water pipe 1102 is also penetrated with the silencer 120, and the end of the second segment water pipe 1102 penetrate with it is described
Height in silencer 120 penetrates with the height in the silencer 120 less than the end of the first segment water pipe 1101.
In addition, the exhaust pipe 200 is equipped with three test points, the bottom of the silencer 120 is disposed with described in one
Test point, and 11012 at each low level of the tube body 110 at arrange a test point, the exhaust pipe 200
A peep hole 130 is offered on each test point.
The engine 10 is connected with the end of the vertical portion 11011.
The first water filling component 20 is used for the water filling into the tube body 110, and the first water filling component 20 includes first
21 and first water pipe 22 of water pump, the vertical portion 11011 are equipped with the first water filling port, one end of first water pipe 22 with it is described
First water filling port connects, and the other end of first water pipe 22 is connected with first water pump 21.
The second water filling component 30 is used for the water filling into the silencer 120, and the second water filling component 30 includes the
Two water pumps 31 and the second water pipe 32, offer the second water filling port on the top of the silencer 120, and the one of second water pipe 32
End is connected with second water filling port, and the other end of second water pipe 32 is connected with second water pump 32.
In addition, the water inlet end of first water pump 21 and second water pump 31 passes through a water inlet pipe and same water source respectively
(figure does not regard) connection.
Lid sets a transparent cover plate 40, the transparent cover plate 40 and the exhaust on each peep hole 130
The outer wall sealing of pipe 200 is glued so that each peep hole 130 is covered by sealing, and through the transparent cover plate 40 and
The peep hole 130 is the inner case it can be seen that the exhaust pipe 200.
Further, the water filling component further includes the second water level sensor 23, and second water level sensor 23 is set
In on the inner wall of the vertical portion 11011, and the height of the 3rd water level sensor 23 is less than the height of first water filling port
Degree, second water level sensor 23 is electrically connected with first water pump 21, when second water level sensor 23 monitors
When water accumulation level in the tube body 110 reaches the first preset value, first water pump 21 is closed.
Further, the second water filling component 30 further includes the 3rd water level sensor 33, the 3rd water level sensor
33 in the silencer 120, and the 3rd water level sensor 33 is electrically connected with second water pump 32, when the described 3rd
When water level sensor 33 monitors that the water accumulation level in the silencer 120 reaches the second preset value, second water pump is closed
32。
Further, the engine 10 respectively with second water level sensor 23 and the 3rd water level sensor 33
It is electrically connected, is preset when the water accumulation level that second water level sensor 23 is monitored in the tube body 110 reaches described first
Value, and when the 3rd water level sensor 23 water accumulation level that monitors in the silencer 120 reaches second preset value,
The engine 10 starts.
Describe the exhaust pipe drainage performance detecting system 100 in detail below in conjunction with specific test process:
When needing to carry out drainage performance test to exhaust pipe 200, start the first water pump 21 and the second water pump 31 first, with
By the water filling into tube body 110 and silencer 120 respectively of the first water filling component 20 and the second water filling component 30, when the second water level passes
When 23 and the 3rd water level sensor 23 of sensor monitors that the water in tube body 110 and silencer 120 is filled with respectively, the first water pump 21
And second water pump 31 will be automatically stopped, while engine 10 is by automatic start, under the scavenging action of engine 10, tube body 110
And the ponding in silencer 120 will constantly from exhaust outlet discharge, after being discharged there is no water, close engine 10, due to
The peep hole 130 and transparent cover plate 40 of mating reaction are respectively provided with the bottom of silencer 120 and each low level of tube body 100, this
When can be observed by corresponding peep hole 130 and transparent cover plate 40 at each low level of silencer 120 and tube body 110
Ponding situation, if less without ponding or ponding at each low level of silencer 120 and tube body 110, represents exhaust pipe
100 drainage performance is good, follow-up not-easy-to-freeze, can subsequently be produced according to the parameter for the exhaust pipe currently tested, if in the presence of
Some positions contain more ponding, and it is not good enough to represent the drainage performance of exhaust pipe 100, follow-up easily to freeze, then need at this time to current
The parameter of the exhaust pipe relevant position of test is adjusted, until reaching normal place.
To sum up, the exhaust pipe drainage performance detecting system among the above embodiment of the present invention, it can carry out exhaust pipe
Actual tests are tested, so that the exhaust pipe produced according to the parameter of the exhaust pipe of test passes, can possess good
Drainage performance, subsequently using not-easy-to-freeze.
Fig. 3 to Fig. 4 is referred to, the exhaust pipe drainage performance detecting system 100 showing in second embodiment of the invention, this
Exhaust pipe drainage performance detecting system 100 among embodiment further comprises three first on the basis of first embodiment
Water level sensor 50 and a controller 60.
One of them described first water level sensor 50 is arranged in the silencer 120, remaining described first water level passes
Sensor 50 is arranged on the inner wall of the tube body, and each first water level sensor 50 with a test point phase just
Right, first water level sensor 50 is used for the water level for measuring the test point internal water accumulation on correspondence position.
The controller 60 is electrically connected with each first water level sensor 50, for receiving each first water
The water level for the test point internal water accumulation on correspondence position that level sensor 50 measures.
Shown it should be understood that these waterlevel datas can be sent to display device by the controller 60, so as to
Understand in operator.
To sum up, the exhaust pipe drainage performance detecting system 100 among the present embodiment is compared to the exhaust among the first implementation
Pipe drainage performance detecting system 100, its can be detected in silencer 120 by first water level sensor 50 of setting and
Water accumulating volume at each low level of tube body 110, identifies compared to naked eyes, and precision substantially increases, while according to accurate water accumulating volume
Adjustment amount can be calculated, so that position accurately more to water accumulating volume is adjusted, it is ensured that exhaust pipe is tested early to be passed through.
It is pointed out that among actual production, the exhaust pipe of different size can be run into, some among the present embodiment
The exhaust pipe being related to is similar, have some then may with the present embodiment when involved in exhaust pipe it is inconsistent, but either what
The exhaust pipe of kind specification, spirit according to the present invention, can be according to institute among above-described embodiment before mass production
The exhaust pipe drainage performance detecting system 100 is arranged on the exhaust pipe by the arrangement stated, thus to the exhaust pipe into
Row drainage performance is tested.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of exhaust pipe drainage performance detecting system, the exhaust pipe includes tube body and silencer, and the silencer is arranged in
On one end of the tube body, it is characterised in that the system comprises engine, the first water filling component, the second water filling component and
Some transparent cover plates, the one end of the tube body away from the silencer are connected with the engine, if the exhaust pipe is equipped with
Dry test point, the bottom of the silencer is disposed with a test point, and arranges one at each low level of the tube body
A test point, the exhaust pipe offer a peep hole on each test point, on each peep hole
Lid sets a transparent cover plate, and the outer wall sealing of the transparent cover plate and the exhaust pipe is glued, the first water filling component
It is connected with the tube body, for the water filling into the tube body, the second water filling component is connected with the silencer, for institute
State water filling in silencer.
2. exhaust pipe drainage performance detecting system according to claim 1, it is characterised in that the first water filling component bag
The first water pump and the first water pipe are included, the tube body is equipped with the first water filling port, one end of first water pipe and first note
The mouth of a river connects, and the other end of first water pipe is connected with first water pump.
3. exhaust pipe drainage performance detecting system according to claim 2, it is characterised in that the second water filling component bag
The second water pump and the second water pipe are included, the silencer is equipped with the second water filling port, one end of second water pipe and described second
Water filling port connects, and the other end of second water pipe is connected with second water pump.
4. exhaust pipe drainage performance detecting system according to claim 3, it is characterised in that first water pump and described
The water inlet end of second water pump is connected by a water inlet pipe with same water source respectively.
5. exhaust pipe drainage performance detecting system according to claim 3, it is characterised in that the tube body includes first segment
Water pipe and second segment water pipe, an end of the first segment water pipe are penetrated with the silencer, and the one of the second segment water pipe
End is penetrated with the silencer, and the height that the end of the second segment water pipe is penetrated with the silencer is less than described the
The end of one section of water pipe penetrates with the height in the silencer.
6. exhaust pipe drainage performance detecting system according to claim 5, it is characterised in that the first segment water pipe includes
One vertical portion, the vertical portion are located at the described one end of first segment water pipe away from the silencer, the end of the vertical portion with
The engine connection, first water filling port are arranged on the vertical portion.
7. exhaust pipe drainage performance detecting system according to claim 1, it is characterised in that the system also includes control
Device and some first water level sensors, one of them described first water level sensor are arranged in the silencer, described in remaining
First water level sensor is arranged on the inner wall of the tube body, and each first water level sensor and a test point
Face;
The controller is electrically connected with each first water level sensor, for receiving each first water level sensor
The water level of the test point internal water accumulation on the correspondence position of measurement.
8. exhaust pipe drainage performance detecting system according to claim 6, it is characterised in that the water filling component also wraps
The second water level sensor is included, second water level sensor is arranged on the inner wall of the vertical portion, and the 3rd level sensor
The height of device is less than the height of first water filling port;
Second water level sensor is electrically connected with first water pump, when second water level sensor monitors the pipe
When internal water accumulation level reaches the first preset value, first water pump is closed.
9. exhaust pipe drainage performance detecting system according to claim 8, it is characterised in that the second water filling component is also
Including the 3rd water level sensor, the 3rd water level sensor is located in the silencer;
3rd water level sensor is electrically connected with second water pump, when the 3rd water level sensor monitors described disappear
When water accumulation level in sound device reaches the second preset value, second water pump is closed.
10. exhaust pipe drainage performance detecting system according to claim 9, it is characterised in that the engine respectively with
Second water level sensor and the 3rd water level sensor are electrically connected, when second water level sensor monitor it is described
Water accumulation level in tube body reaches first preset value, and the 3rd water level sensor monitors the product in the silencer
When water water level reaches second preset value, the engine start.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711229749.3A CN108036934B (en) | 2017-11-29 | 2017-11-29 | Exhaust pipe drainage performance detection system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711229749.3A CN108036934B (en) | 2017-11-29 | 2017-11-29 | Exhaust pipe drainage performance detection system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108036934A true CN108036934A (en) | 2018-05-15 |
CN108036934B CN108036934B (en) | 2019-08-16 |
Family
ID=62094521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711229749.3A Active CN108036934B (en) | 2017-11-29 | 2017-11-29 | Exhaust pipe drainage performance detection system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108036934B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04240541A (en) * | 1991-01-25 | 1992-08-27 | Daifuku Co Ltd | Connecting apparatus of exhaust gas pipe for internal combustion engine tester |
CN101226105A (en) * | 2007-01-16 | 2008-07-23 | 天津勤美达工业有限公司 | Steel-ball-rolling machine for testing engine exhaust pipe |
CN202149848U (en) * | 2011-05-30 | 2012-02-22 | 哈尔滨东安汽车发动机制造有限公司 | Resistance model device of vehicle exhaust pipe |
CN103308317A (en) * | 2013-07-04 | 2013-09-18 | 交通运输部公路科学研究院 | Liquid water drainage quantity testing device and method of automobile exhaust pipe |
CN203310610U (en) * | 2013-03-22 | 2013-11-27 | 南京南汽冲压件有限公司 | Pressure-resistance performance testboard for automobile silencer |
-
2017
- 2017-11-29 CN CN201711229749.3A patent/CN108036934B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04240541A (en) * | 1991-01-25 | 1992-08-27 | Daifuku Co Ltd | Connecting apparatus of exhaust gas pipe for internal combustion engine tester |
CN101226105A (en) * | 2007-01-16 | 2008-07-23 | 天津勤美达工业有限公司 | Steel-ball-rolling machine for testing engine exhaust pipe |
CN202149848U (en) * | 2011-05-30 | 2012-02-22 | 哈尔滨东安汽车发动机制造有限公司 | Resistance model device of vehicle exhaust pipe |
CN203310610U (en) * | 2013-03-22 | 2013-11-27 | 南京南汽冲压件有限公司 | Pressure-resistance performance testboard for automobile silencer |
CN103308317A (en) * | 2013-07-04 | 2013-09-18 | 交通运输部公路科学研究院 | Liquid water drainage quantity testing device and method of automobile exhaust pipe |
Also Published As
Publication number | Publication date |
---|---|
CN108036934B (en) | 2019-08-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN202471374U (en) | Multifunctional airtightness detection apparatus | |
CN201803832U (en) | Tester using acoustic emission signals to detect valve leakage | |
CN206440441U (en) | A kind of differential pressure type air leakage tester | |
CN103511396A (en) | Hydraulic pump and hydraulic motor reliability testing device based on power recovery technology | |
CN104832419B (en) | A kind of water pump testing system | |
CN100562729C (en) | A kind of leakage detection method and equipment thereof | |
CN206479294U (en) | A kind of sealing property testing system of engineering machinery reductor | |
CN102564711A (en) | Device and method for detecting water tightness performance of underwater sensor | |
CN106352942B (en) | Liquid level emasuring device and level measuring method based on double difference pressure transmitter | |
CN208420321U (en) | Safety valve testing equipment | |
CN110530584A (en) | A kind of waterproof ventilated membrane sealing performance automated testing method and equipment | |
CN109916568A (en) | Electric machine controller sealing propertytest system, device and method | |
CN207064220U (en) | A kind of Air Compressor Test detection means | |
CN106124139B (en) | A kind of method of quick detection dialyzer leakage | |
CN108036934A (en) | exhaust pipe drainage performance detecting system | |
CN206362506U (en) | The anhydrous pressure testing device of ball valve | |
CN203259337U (en) | High-temperature valve detection test system | |
CN108254193A (en) | A kind of air compressor for vehicle performance test apparatus | |
CN108956409A (en) | A kind of minute-pressure permeameter and test method | |
CN208505607U (en) | A kind of experimental rig of harshness operating condition valve | |
KR20140124523A (en) | Fuel supplying apparatus | |
CN108709826A (en) | A kind of carbon dioxide frictional resistance measuring device and method | |
CN203869816U (en) | Equipment for detecting leakproofness of valve | |
CN206330652U (en) | A kind of domestic gas meter detection means | |
CN106092754B (en) | A kind of liquefied petroleum gas steel cylinder water test unit and method |
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 |