CN108799604A - A kind of organic glass tablet rapid-closure damper - Google Patents
A kind of organic glass tablet rapid-closure damper Download PDFInfo
- Publication number
- CN108799604A CN108799604A CN201810693414.5A CN201810693414A CN108799604A CN 108799604 A CN108799604 A CN 108799604A CN 201810693414 A CN201810693414 A CN 201810693414A CN 108799604 A CN108799604 A CN 108799604A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- valve
- organic glass
- valve body
- closure damper
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
Abstract
The present invention provides a kind of organic glass tablet rapid-closure damper, including transparent valve body, oil-free air compressor, increased stroke-adjustable gas cylinder, sensor, two-position five-way solenoid electric valve, control cabinet, several cables and tracheae.Oil-free air compressor provides compressed gas to cylinder, two-position five-way solenoid electric valve controls cylinder intake direction, cylinder pushes valve plates to be turned on and off under the action of compressed air, sensor is for measuring cylinder piston run duration, data of the control cabinet for the operation and display acquisition of control system.Apparatus of the present invention are simple in structure, manufacture is easy, closing velocity is more quickly and stable, convenient for cavitation, the column separation phenomenon in transient process at Photographic Study valve, whole system realizes automation control and data acquisition, it is easy to operation in experimentation, it is suitable for the experiment porch of column separation and fluid structurecoupling.
Description
Technical field
The invention belongs to rapid-closure damper fields, and in particular to a kind of organic glass tablet rapid-closure damper.
Background technology
Rapid-closure damper is the important component of column separation experimental provision, and closing velocity speed when work is related to
Whether experimental provision occurs apparent column separation phenomenon, and influences the accuracy of experimental data and result.Traditional is quick
Valve is spring controlled ball valve, using spring controlled valve door quick closedown, although experimental provision can also generate column separation, and
And valve closing velocity reaches requirement of experiment.But there are the shortcomings and deficiencies of following three aspect for traditional rapid-closure damper：
(1) shut-in time is not fast enough, and as usage time increases, and the elasticity of spring can be affected, and valve closing velocity subtracts
Slowly；(2) due to being limited by valve arc-shaped surface, valve is in the observation of the cavitation phenomenon inconvenience in transient process, Er Qieyou
It is opaque in valve, therefore the experimental phenomena generated at valve can not be shot with video camera and be studied；(3) it is needed in experimentation
The opening and closing for wanting manual control valve bring inconvenience to experimentation.
The three above defect and deficiency of traditional rapid-closure damper, restrict the formation to hole stream, column separation with
And the research of fluid structurecoupling.Therefore, in order to preferably study cavitation phenomenon and column separation in transient process at valve, have
Necessity overcome this three point defect with it is insufficient, design closing velocity is fast and stablizes, convenient at shooting research valve experimental phenomena it is fast
Speed closes valve.
Invention content
In view of the problems of the existing technology, the present invention is the technical solution for solving problems of the prior art and using
It is as follows：
A kind of organic glass tablet rapid-closure damper, including valve body, the valve plates that are arranged in valve body and
The cylinder being connect with valve plates, it is characterised in that：The valve body is assembled by six pieces of transparent organic glass, valve body
Trepanning in the middle part of front and back two blocks of side plates, opening diameter is consistent with experimental channel diameter dimension, is equipped between side plate before and after valve body
Valve plates, valve plates top connect push rod, are connect with piston bar bottom after being pierced by valve body top plate above push rod, gas
Cylinder piston rod run duration acquisition sensor is mounted on outside cylinder up and down, sensor passes through cable A connection control cabinets, cylinder
The cylinder upper inlet port and cylinder lower part air inlet that side wall opens up up and down are respectively by tracheae and two-position five-way solenoid electric valve
Connection, two-position five-way solenoid electric valve connect oil-free air compressor by tracheae, and two-position five-way solenoid electric valve passes through cable B
It is connect with control cabinet.
The valve plates are the slab construction of bottom level, and valve plates are made of white PVC board, the valve of plane tabular
Plate design solves the problems, such as conventional ball valve inconvenience observation experiment phenomenon.
The cylinder is the type stroke adjustable cylinders of MAJ25 × 100, cylinder range-adjustable ranging from 50-100mm, gas
Cylinder stroke adjusting nut is equipped with above cylinder, for the adjusting cylinder piston throw of lever on demand, valve plates stroke is in the present invention
70mm, therefore 70mm is fixed in cylinder stroke adjusting.
The valve body is by the assembled cuboid of six pieces of transparent organic glass, with interior six between adjacent sheets of glass
Corner bolt reinforcement by connection, injection chloroform is for preventing leak in splicing gap, and side plate middle part is drilled with lathe before and after valve body
As the inlet and outlet of valve body, bore diameter size is consistent with experimental channel outer diameter, and experimental channel passes through valve body
Inlet and outlet are connect with valve.
The push rod is equipped with external screw thread with piston rod joint, is vertically connected with push rod and piston rod admittedly by nut
It is fixed.
The sensor is CS1-U type sensors, and sensor records the run duration of acquisition piston rod by magnetic induction.
With display touch screen on the control cabinet, by the piston rod movement time showing of sensor acquisition and recording in screen
On.
The oil-free air compressor is the type oil-free air compressors of OTS-75 × 2.
The gas outlet for being respectively equipped with automatically controlled interface on the two-position five-way solenoid electric valve, being connected to cylinder upper inlet port
A, gas outlet B, primary air inlet and the two noise reduction mouths being connected to cylinder lower part air inlet, the primary air inlet and oil-free air pressure
Contracting machine is connected to, and muffler is housed on two noise reduction mouth A and noise reduction mouth B, for reducing noise in scavenging period, automatically controlled interface with
Control cabinet connects, and oil-free air compressor is supplied by tracheae to primary air inlet, and connecing on the display touch screen of control cabinet is passed through
On and off opens button control ventilation, and when pressing push button, gas outlet A is opened, and gas outlet B is closed, and primary air inlet passes through outlet
Mouth A provides compressed gas to cylinder upper inlet port, to push down on cylinder piston rod；Gas outlet when by cut-off push button
B is opened, and gas outlet A is closed, and primary air inlet provides compressed gas by gas outlet B to cylinder lower part air inlet, thus by cylinder
Piston rod pushes up.
The invention has the advantages that：
Apparatus of the present invention are simple in structure, manufacture handling ease, easy to control, closing velocity is fast and stablizes, and ground convenient for photography
Study carefully cavitation, the column separation phenomenon at valve in transient process, whole system realizes automation control and data acquisition, experiment
It is easy to operation in the process, it is suitable for the experiment porch of column separation and fluid structurecoupling.
Description of the drawings
Fig. 1 is organic glass quick closing valve door system 3-D view；
Fig. 2 is organic glass quick closing valve door main body 3-D view；
Fig. 3 is organic glass quick closing valve door main body front view；
Fig. 4 is organic glass rapid-closure damper main body side view；
Fig. 5 is organic glass quick closing valve door main body vertical view；
Fig. 6 is organic glass quick closing valve door main body bottom view；
Fig. 7 is two-position-five-way solenoid valve structural schematic diagram；
Wherein：1- valve bodies, 2- valves inlet and outlet, 3- valve plates, 4- push rods, 5- nuts, 6- sensors, 7- cylinders,
8- cylinder upper inlet ports, 9- cylinders lower part air inlet, 10- cylinder stroke adjusting nuts, 11- tracheaes, 12- two-position five-way electromagnetism
Control valve, the automatically controlled interfaces of 12.1-, the gas outlets 12.2- A, 12.3- gas outlet B, 12.4- noise elimination mouth A, 12.5 primary air inlets,
12.6- noise elimination mouth B, 13- oil-free air compressors, 14- cables A, 15- cable B, 16- control cabinet, 17- show touch screen, 18-
Piston rod.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described, such as Fig. 1-
Shown in 7, a kind of organic glass tablet rapid-closure damper, including valve body 1, the valve plates that are arranged in valve body 1, with
The cylinder 7 of valve plates connection, wherein valve body 1 is assembled by six pieces of transparent organic glass, two pieces of sides before and after valve body
Trepanning in the middle part of plate, opening diameter is consistent with experimental channel diameter dimension, is equipped with valve plates 3, valve before and after valve body between side plate
Push rod 4 is connected above door-plate, 4 top of push rod is connect after being pierced by valve body top plate with 18 bottom of piston rod of cylinder 7, outside cylinder
Portion is mounted on cylinder piston rod run duration acquisition sensor 6 up and down, and sensor 6 passes through cable A14 connections control cabinet 16, gas
The cylinder upper inlet port 8 and cylinder lower part air inlet 9 that cylinder side wall opens up up and down are respectively by tracheae 11 and two-position five-way electromagnetism
Control valve 12 connects, and two-position five-way solenoid electric valve 12 connects the types of OTS-75 × 2 oil-free air compressor 13, two-position five-way electromagnetism
Control valve 12 is connect by cable B15 with control cabinet 16.
Valve plates 3 are slab construction, bottom level, and valve plates are made of white PVC board, and the valve plates of plane tabular are set
Meter solves the problems, such as conventional ball valve inconvenience observation experiment phenomenon.
Cylinder 7 is the type stroke adjustable cylinders of MAJ25 × 100, cylinder range-adjustable ranging from 50-100mm, on cylinder 7
Side is equipped with cylinder stroke adjusting nut 10, and for the adjusting cylinder piston throw of lever on demand, valve plates stroke is 70mm in the present invention,
Therefore 70mm is fixed in cylinder stroke adjusting.
Valve body 1 is by the assembled cuboid of six pieces of transparent organic glass, with interior hexagonal between adjacent sheets of glass
It is bolted reinforcing, injection chloroform is for preventing leak in splicing gap, with lathe drilling work in the middle part of side plate before and after valve body
For the inlet and outlet of valve body, bore diameter size is consistent with experimental channel outer diameter, experimental channel by valve body into
Outlet is connect with valve.
Push rod 4 is equipped with external screw thread with 18 joint of piston rod, is vertically connected with push rod and piston rod admittedly by nut 5
It is fixed.
Sensor 6 is CS1-U type sensors, and sensor records the run duration of acquisition piston rod 18 by magnetic induction.
With display touch screen on control cabinet 16, screen is shown in by 18 run duration of piston rod of 6 acquisition and recording of sensor
On curtain.
It is respectively equipped with automatically controlled interface 12.1 on two-position five-way solenoid electric valve 12, goes out with what cylinder upper inlet port 8 was connected to
Gas port A12.2, the gas outlet B12.3 being connected to cylinder lower part air inlet 9, primary air inlet 12.5 and two noise reduction mouths, main air inlet
Mouth 12.5 is connected to oil-free air compressor, muffler is housed on two noise reduction mouth A12.4 and noise reduction mouth B12.6, for changing
Noise is reduced during gas, automatically controlled interface 12.1 is connect with control cabinet 16, oil-free air compressor 13 by tracheae 11 to lead into
Gas port 12.5 supply, by the display touch screen 17 of control cabinet switch on and off button control ventilation, when press connection by
When button gas outlet A12.1 open, gas outlet B12.2 close, primary air inlet 12.5 by gas outlet A12.1 to 7 top of cylinder into
Gas port 8 provides compressed gas, to push down on cylinder piston rod 18；Gas outlet B12.2 is opened when by cut-off push button, is gone out
Gas port A12.1 is closed, and primary air inlet 12.5 provides compressed gas by gas outlet B12.2 to cylinder lower part air inlet 9, thus will
Cylinder piston rod 18 pushes up.
When needing to close with Open valve main body 1, gives cylinder 7 to inflate using oil-free air compressor 13, pass through two
Five-way electromagnetic valve 12 controls the airintake direction of cylinder 7, the valve rapid-closing when cylinder upper inlet port 8 is inflated, when under cylinder
Valve is quickly opened when portion's air inlet 9 is inflated, and the induced magnet on piston bar 18 moves, and passes through external sensing
The movement of 6 induced magnet of device is to measure the run duration of valve inner piston rod；The opening and closing of valve pass through on control cabinet
Display touch screen 17 realize, a whole set of quick closing valve door system realize automation control and data acquisition, valve body 1
It is transparent organic glass and valve plates 3 are surface plates, valve is in the cavitation phenomenon in transient process convenient for observation.
Protection scope of the present invention is not limited to the above embodiments, it is clear that those skilled in the art can be to this hair
It is bright to carry out various changes and deformation without departing from scope and spirit of the present invention.If these changes and deformation belong to power of the present invention
In the range of profit requirement and its equivalent technologies, then including the intent of the present invention also includes these changes and deforms.
Claims (9)
1. a kind of organic glass tablet rapid-closure damper, including valve body, the valve plates that are arranged in valve body and with
The cylinder of valve plates connection, it is characterised in that：The valve body is assembled by six pieces of transparent organic glass, before valve body
Trepanning in the middle part of two blocks of side plates afterwards, opening diameter is consistent with experimental channel diameter dimension, is equipped with valve before and after valve body between side plate
Door-plate, valve plates top connect push rod, are connect with piston bar bottom after being pierced by valve body top plate above push rod, cylinder
External to be mounted on cylinder piston rod run duration acquisition sensor up and down, sensor passes through cable A connection control cabinets, cylinder side
The cylinder upper inlet port and cylinder lower part air inlet that wall opens up up and down are connected by tracheae and two-position five-way solenoid electric valve respectively
Connect, two-position five-way solenoid electric valve by tracheae connect oil-free air compressor, two-position five-way solenoid electric valve by cable B with
Control cabinet connects.
2. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The valve plates are bottom
The slab construction of portion's level, valve plates are made of white PVC board.
3. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The cylinder is
The type stroke adjustable cylinders of MAJ25 × 100, cylinder range-adjustable ranging from 50-100mm, cylinder top are equipped with cylinder stroke tune
Save nut.
4. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The valve body is
By the assembled cuboid of six pieces of transparent organic glass, hexagon socket head cap screw reinforcement by connection, splicing seams are used between adjacent sheets of glass
Injection chloroform is for preventing leak in gap, uses lathe drilling as the inlet and outlet of valve body before and after valve body in the middle part of side plate,
Bore diameter size is consistent with experimental channel outer diameter.
5. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The push rod and piston
Bar joint is equipped with external screw thread, and push rod and piston rod are vertically connected with fixation by nut.
6. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The sensor is
CS1-U type sensors.
7. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：Band on the control cabinet
There is display touch screen.
8. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The oil-free air pressure
Contracting machine is the type oil-free air compressors of OTS-75 × 2.
9. a kind of organic glass tablet rapid-closure damper as described in claim 1, it is characterised in that：The two-position five-way electricity
It is respectively equipped with automatically controlled interface on magnetic control valve, the gas outlet A that is connected to cylinder upper inlet port, is connected to cylinder lower part air inlet
Gas outlet B, primary air inlet and two noise reduction mouths, the primary air inlet be connected to oil-free air compressor, two noise reduction mouth A and
Muffler is housed, automatically controlled interface is connect with control cabinet on noise reduction mouth B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810693414.5A CN108799604A (en) | 2018-06-29 | 2018-06-29 | A kind of organic glass tablet rapid-closure damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810693414.5A CN108799604A (en) | 2018-06-29 | 2018-06-29 | A kind of organic glass tablet rapid-closure damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108799604A true CN108799604A (en) | 2018-11-13 |
Family
ID=64072833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810693414.5A Pending CN108799604A (en) | 2018-06-29 | 2018-06-29 | A kind of organic glass tablet rapid-closure damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108799604A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848447A (en) * | 2019-12-13 | 2020-02-28 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Pneumatic type active explosion-proof gate valve and explosion-proof method |
| CN110848439A (en) * | 2019-12-13 | 2020-02-28 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Active bidirectional explosion-proof quick gate valve and quick explosion-proof method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841797A (en) * | 1971-11-18 | 1974-10-15 | W Fitzgerald | Power units |
| CN101598232A (en) * | 2009-07-20 | 2009-12-09 | 山东大学 | The control valve electro-hydraulic driver |
| CN102187142A (en) * | 2008-08-13 | 2011-09-14 | 鲍勃埃菲尔德控股私人有限公司 | Method and apparatus for purging air from automatic lubrication systems |
| CN202302233U (en) * | 2011-09-20 | 2012-07-04 | 铜陵祥云消防科技有限责任公司 | Electric closing device of valve |
| CN102537396A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Pneumatic slag discharge valve capable of being continuously opened and closed automatically |
| CN102563188A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Pneumatic residual cake valve |
| CN203051813U (en) * | 2013-01-16 | 2013-07-10 | 胜利油田营海实业集团有限公司 | Novel rainproof device of pneumatic gate valve |
| CN103459907A (en) * | 2011-01-11 | 2013-12-18 | 欧根·施密特博士仪器和泵制造有限责任公司 | Device for actuating a control valve |
| US20140210119A1 (en) * | 2011-11-23 | 2014-07-31 | Synventive Molding Solutions, Inc. | Controlled valve pin movement based on cavity sensor feedback |
| CN204372206U (en) * | 2014-12-26 | 2015-06-03 | 山东华泰英特罗斯化工有限公司 | Chemical industry push-pull valve protective gear |
| CN204533746U (en) * | 2015-01-12 | 2015-08-05 | 江苏金陵自控技术有限公司 | Mining electric hydraulic control quick closing valve |
| CN206053669U (en) * | 2016-08-18 | 2017-03-29 | 河北拓达车门有限公司 | A kind of upper shifting glass mechanism arrangement based on bus safety escape system |
| CN206145159U (en) * | 2016-08-31 | 2017-05-03 | 江苏辰龙阀门制造有限公司 | Can monitor opening degree's gate valve |
| CN206449225U (en) * | 2016-12-29 | 2017-08-29 | 天津天地众恒仪表技术有限公司 | A kind of gauge valve for the visual type that throttles |
-
2018
- 2018-06-29 CN CN201810693414.5A patent/CN108799604A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841797A (en) * | 1971-11-18 | 1974-10-15 | W Fitzgerald | Power units |
| CN102187142A (en) * | 2008-08-13 | 2011-09-14 | 鲍勃埃菲尔德控股私人有限公司 | Method and apparatus for purging air from automatic lubrication systems |
| CN101598232A (en) * | 2009-07-20 | 2009-12-09 | 山东大学 | The control valve electro-hydraulic driver |
| CN102537396A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Pneumatic slag discharge valve capable of being continuously opened and closed automatically |
| CN102563188A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Pneumatic residual cake valve |
| CN103459907A (en) * | 2011-01-11 | 2013-12-18 | 欧根·施密特博士仪器和泵制造有限责任公司 | Device for actuating a control valve |
| CN202302233U (en) * | 2011-09-20 | 2012-07-04 | 铜陵祥云消防科技有限责任公司 | Electric closing device of valve |
| US20140210119A1 (en) * | 2011-11-23 | 2014-07-31 | Synventive Molding Solutions, Inc. | Controlled valve pin movement based on cavity sensor feedback |
| CN203051813U (en) * | 2013-01-16 | 2013-07-10 | 胜利油田营海实业集团有限公司 | Novel rainproof device of pneumatic gate valve |
| CN204372206U (en) * | 2014-12-26 | 2015-06-03 | 山东华泰英特罗斯化工有限公司 | Chemical industry push-pull valve protective gear |
| CN204533746U (en) * | 2015-01-12 | 2015-08-05 | 江苏金陵自控技术有限公司 | Mining electric hydraulic control quick closing valve |
| CN206053669U (en) * | 2016-08-18 | 2017-03-29 | 河北拓达车门有限公司 | A kind of upper shifting glass mechanism arrangement based on bus safety escape system |
| CN206145159U (en) * | 2016-08-31 | 2017-05-03 | 江苏辰龙阀门制造有限公司 | Can monitor opening degree's gate valve |
| CN206449225U (en) * | 2016-12-29 | 2017-08-29 | 天津天地众恒仪表技术有限公司 | A kind of gauge valve for the visual type that throttles |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848447A (en) * | 2019-12-13 | 2020-02-28 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Pneumatic type active explosion-proof gate valve and explosion-proof method |
| CN110848439A (en) * | 2019-12-13 | 2020-02-28 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Active bidirectional explosion-proof quick gate valve and quick explosion-proof method |
| CN110848447B (en) * | 2019-12-13 | 2023-11-24 | 汇乐因斯福环保安全研究院（苏州）有限公司 | Pneumatic active explosion-proof gate valve and explosion-proof method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105158077B (en) | A kind of hydraulic pressure environmental simulation test device | |
| CN108799604A (en) | A kind of organic glass tablet rapid-closure damper | |
| CN206804436U (en) | A kind of steel construction resistance to compression detection means | |
| CN106840550A (en) | Multifunction ball valve fatigue tester | |
| CN206095596U (en) | Intelligent valve examines test table | |
| CN208458950U (en) | Building element testing machine and its building element test cover | |
| CN106057061A (en) | Laboratory simulation system and method for coal mine gas extraction boring leakage position detection | |
| CN206725424U (en) | Transformer oil spectrum monitoring equipment calibration oil storage tank | |
| CN210603444U (en) | Flow monitoring device convenient to detach for water supply pipeline | |
| CN113047825B (en) | Pressure detection device for injecting air into tight oil reservoir | |
| CN208187644U (en) | A kind of equipment for doing pressure rating test for valve body | |
| CN105910775A (en) | Large-caliber all-welded ball-valve integrated multifunctional detection equipment | |
| CN206710351U (en) | A kind of waste gas of pollutant detection means | |
| CN207751681U (en) | A kind of pulling apparatus of pipe gas self-closing valve detection | |
| CN110870989A (en) | Device for realizing dynamic vacuum degassing and using method thereof | |
| CN206531338U (en) | A kind of Automobile Parts Inspection fast freezing case | |
| CN209311226U (en) | A kind of test device of high pressure resistant aluminum substrate | |
| CN209247271U (en) | A kind of building doors and windows field detecting device | |
| CN113551155A (en) | Steam pipeline operation comprehensive maintenance device | |
| CN102182489A (en) | Automated control throttle for belt roadway of mechanical mine | |
| CN101788369B (en) | Machine for checking tightness of pressure retaining valve of air conditioning indoor unit | |
| CN207005346U (en) | A kind of definite value depressurizes real time sample valve | |
| CN207455813U (en) | Cultural Relics Storage Special constant temperature constant humidity machine | |
| CN211766994U (en) | Shield constructs quick-witted tool storage box | |
| CN201673022U (en) | Air-conditioner indoor unit pressure retaining valve air tightness checking machine |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |