CN109099963A - A kind of multrirange multi output pneumatic control detection device - Google Patents
A kind of multrirange multi output pneumatic control detection device Download PDFInfo
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- CN109099963A CN109099963A CN201810726430.XA CN201810726430A CN109099963A CN 109099963 A CN109099963 A CN 109099963A CN 201810726430 A CN201810726430 A CN 201810726430A CN 109099963 A CN109099963 A CN 109099963A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
A kind of multrirange multi output pneumatic control detection device, comprising: shell, instrument board and detachable cover；The instrument board is located in the shell, and the detachable cover is removably attached on the shell；Measuring instrument, control valve and pipe-line system are fixedly installed on the instrument board, gas reaches measuring instrument by pipe-line system, and control valve is used to control the on-off and flow direction of gas；The measuring instrument includes the measuring instrument of at least two different ranges, and the pipe-line system includes at least two output interface.The present invention is integrated with multrirange range detection and multiple-channel output interface, using manually adjust, easy to operate, indicator indicates, quickly accurate detection can be carried out to every aeroperformance of space suit and other closed pressurizing structures.
Description
Technical field
The present invention relates to fast pneumatics to control detection field, and in particular to a kind of multrirange multi output pneumatic control detection dress
It sets.
Background technique
Space suit is that spacefarer is used to protect outer space environments to people when space environment is survived or carries out extravehicular activity
The personal protection operation full pressure suit of body harm, for spacefarer provide atmospheric pressure appropriate, enough oxygen, suitable temperature and
Humidity, to ensure spacefarer's vital movement needs.Space suit assembly front and back, needs pneumatically to examine its auxiliary products and system
It looks into, including the multinomial static and dynamic performance test such as gas tightness, gas flow and flow resistance.It is required, is surveyed according to state of the art
Examination index is more, and range ability is wide, and test interface is more, and there are no integrated multipath output interfaces and volume that one kind can facilitate connection
The professional Pneumatic Test Set of journey range.The present invention devises one kind can quick auxiliary connecting device (pipeline fittings), covering
Multrirange range, realize multiple-channel output mechanical pneumatic detection device, the device using manually adjust, be easy to operate, indicator
Instruction, can be to every aeroperformance progress quickly accurate detection of other closed pressurizing structures such as space suit.
Summary of the invention
The purpose of the present invention is to provide a kind of multrirange multi output pneumatic control detection devices, are integrated with multrirange range
Detection and multiple-channel output interface, for space flight dress system and its auxiliary products dynamic and static aeroperformance carry out detection and
The quick accurate detection under different pressures environment is realized in test.
To solve the above problems, of the invention provides a kind of multrirange multi output pneumatic control detection device, comprising: shell
Body, instrument board and detachable cover；The instrument board is installed in the shell, and the detachable cover is removably attached to described
On shell；
Measuring instrument, control valve and pipe-line system are fixedly installed on the instrument board, gas is arrived by pipe-line system
Up to measuring instrument, control valve is used to control the on-off and flow direction of gas；
The measuring instrument includes the measuring instrument of at least two different ranges, and the pipe-line system includes at least two
A above output interface.
In the particular embodiment, the measuring instrument includes precision pressure gauge, pressure vacuum gauge and suspended body flowmeter, is led to
Cross the gas pressure detection within the scope of the pressure gauge for connecting different ranges and suspended body flowmeter realization -0.1MPa~25.0MPa with
And the detection of gas flow rate within the scope of 0.1NL/min~30.0NL/min.
In the particular embodiment, the control valve includes controlled valve and pressure reducing valve；The controlled valve is controllable
Gas flow and adjusting gas flow size；The pressure reducing valve be used for be the high pressure air reducing of front end rear end low pressure gas
Body.
In the particular embodiment, the pipe-line system includes interface and pipeline, and the interface includes gas source interface, input
Interface and output interface；The pipe-line system is installed on the instrument back.
In the particular embodiment, gas source interface (1) connects high-pressure air source, and the pressure limit of the high-pressure air source is 0~
25.0MPa is transported to the first precision pressure gauge (25) to show input pressure, separately by being divided into two-way after valve (23) all the way
It is divided into four tunnels after depressurizing all the way by the first pressure reducing valve (16), the first via is transported to the second precision pressure gauge (18) to show through one
Gas pressure after grade decompression, by valve (11) connection output interface (5) with big flow output gas, third road is logical on the second tunnel
Valve (10) connection output interface (4) is crossed with small flow output gas, the 4th tunnel is subtracted by the second pressure reducing valve (14) by second level
Low pressure exports after pressure；The detection range of first precision pressure gauge (25) is 0~25.0MPa, second precision pressure gauge
(18) detection range is 0~1.6MPa.
In the particular embodiment, the low-pressure gas after second depressurized is divided into three tunnels, and the first via passes through first
Interface (7) directly exports, and the second tunnel is sequentially connected the first suspended body flowmeter (24) and the second float after passing through the first valve (17)
Flowmeter (31), and exported by output interface (8), third road passes through the second valve (12) connection third suspended body flowmeter (20)
It is exported afterwards by output interface (8).
In the particular embodiment, first suspended body flowmeter (24) and third suspended body flowmeter (20) are separately connected defeated
Incoming interface (27), (30), and the input interface (27), (30) can be used as input interface with first interface (7), for measuring
The flow for the interiors of products gas being attached to；The inspection of first suspended body flowmeter (24) and the second suspended body flowmeter (31)
Survey range is 0.1NL/min~3.0NL/min, and the detection range of third suspended body flowmeter (20) is 3.0NL/min~30.0NL/
min。
It in the particular embodiment, further include first pressure detection interface (6) and second pressure detection interface (21), difference
Third precision pressure gauge (19) and the 4th precision pressure gauge (22) are connected, testing product internal pressure is used for；The third is accurate
The detection range of pressure gauge (19) is 0~1.0MPa, and the detection range of the 4th precision pressure gauge (22) is 0~0.1MPa.
It in the particular embodiment, further include the vacuum interface (2) and product interface (3) communicated, the vacuum interface (2)
One end connects vacuum pump, other end connection third valve (9) and the 4th valve (26), third valve (9) front end and vacuum pump phase
Even, the 4th valve (26) rear end is communicated with atmosphere；Described product interface (3) one end connecting test product, the other end connect vacuum
Pressure gauge (15) is to show the vacuum degree inside current production；The vacuum pump vacuumizes the test product, the third
Valve (9) controls the on-off of the test product and vacuum pump, and the 4th valve (26) controls the test product and atmosphere
The on-off of environment；The detection range of the pressure vacuum gauge (15) is -0.10~0MPa.In the particular embodiment, described can
Disassembly lid is fixed on the housing by instrument lock；Handle is provided on the shell.
In conclusion the present invention provides a kind of multrirange multi output pneumatic control detection devices, comprising: shell, instrument
Plate and detachable cover；The instrument board is installed in the shell, and the detachable cover is removably attached on the shell；
Measuring instrument, control valve and pipe-line system are fixedly installed on the instrument board, gas reaches measuring instrument by pipe-line system
Device, control valve are used to control the on-off and flow direction of gas；The measuring instrument includes the survey of at least two different ranges
Measuring appratus, the pipe-line system include at least two output interface.The present invention is integrated with multrirange range detection and multichannel
Output interface, using manually adjust, easy to operate, indicator indicates, can be to every gas of space suit and other closed pressurizing structures
Dynamic performance carries out quickly accurate detection.
The beneficial effects of the present invention are: using certain gases such as clean air or oxygens as working media, in room temperature
Under condition of normal pressure, by selecting the measuring instrument of different range abilities, realize closed to space flight dress system and its auxiliary products etc.
The aeroperformance of pressurizing structure detects and aerodynamic testing, be able to carry out quickly fill, pressure release, be provided simultaneously with multiple range pressure and control
And the function of measurement, flow control and measurement and low-pressure performance test.
Detailed description of the invention
Fig. 1 is multrirange multi output pneumatic control detection device schematic diagram of the present invention；
Fig. 2 is the shell structure figure of pneumatic control detection device of the present invention；
Fig. 3 is the schematic illustration of pneumatic control detection device of the present invention.
1: gas source interface；2,3,4,5,6,7,8,21,27,30: input/output interface；9,10,11,12,17,23,26:
Controlled valve；14,16: pressure reducing valve；15: pressure vacuum gauge；18,19,22,25: precision pressure gauge；20,24,31: float-type
Meter.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, With reference to embodiment and join
According to attached drawing, the present invention is described in more detail.It should be understood that these descriptions are merely illustrative, and it is not intended to limit this hair
Bright range.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to avoid this is unnecessarily obscured
The concept of invention.
As depicted in figs. 1 and 2, the present apparatus is made of shell I, instrument board II and detachable cover III, and detachable cover III is by 4
Instrument locking is scheduled on I on shell, shields to instrument board II, and when use is easily detached.Instrument board II include measuring instrument,
Control valve and pipe-line system three parts, instrument board and necessary instrument mounted thereto are screwed in shell structure.
Dust and other impurities in order to prevent are respectively arranged with sealing blanking cover on all test interfaces.I top of shell is equipped with handle, side
Just it moves and carries.
The main part of the device --- measuring instrument, control valve and pipe-line system three parts are installed on instrument board.
Measuring instrument includes precision pressure gauge, pressure vacuum gauge and suspended body flowmeter, by connect different pressure gauge and
Flowmeter can realize gas pressure detection and 0.1NL/min~30.0NL/min range within the scope of -0.1MPa~25.0MPa
Interior detection of gas flow rate.
Control valve includes controlled valve and pressure reducing valve, and each controlled valve connects for controlling gas from input interface to output
On-off and gas supply flow direction between mouthful, valve opening adjustable gas uninterrupted；Pressure reducing valve is for being stored in front end in gas cylinder
High pressure air reducing be low-pressure gas needed for back outlet, needed according to measurement condition, it can be achieved that second depressurized, output is full
The working medium pressure of sufficient test requirements document.
Pipe-line system includes interface and pipeline, and the interface includes gas source interface, input interface and output interface, wherein
Gas source interface is inputted for connecting high-pressure air source, highest up to 21MPa, remaining total interface is used to connect to pneumatic detection device
For mating gas piping attachment, it can be achieved that fast sealing connects, part of interface, which can not only be used for input interface, also can be used as output interface.
High pressure gas is after level-one or second depressurized, it can be achieved that air source device exports；Gas piping is installed on instrument back, instrument
Pipeline arrangement and trend are given on plate.
The invention has the advantages that using certain gases such as clean air or oxygens as working media, in room temperature
Under condition of normal pressure, by selecting the measuring instrument of different range abilities, realize closed to space flight dress system and its auxiliary products etc.
The aeroperformance of pressurizing structure detects and aerodynamic testing, can quickly be filled, pressure release, and multiple range pressure control is provided simultaneously with
And the function of measurement, flow control and measurement and low-pressure performance test, pneumatic control principle are as shown in Fig. 3.
3 invention is further described in detail with reference to the accompanying drawing.
The present invention provides a kind of fast pneumatic detection device of multrirange covering multiple-channel output, apparatus main body part packets
Include measuring instrument, control valve and pipe-line system three parts.
Measuring instrument includes precision pressure gauge 18,19,22,25, pressure vacuum gauge 15, and suspended body flowmeter 20,24,31 covers
Cover following range ability and precision:
Pressure gauge 25,0~25.0MPa of range；
Pressure gauge 18,0~1.6MPa of range；
Pressure gauge 19,0~1.0MPa of range；
Pressure gauge 22,0~0.1MPa of range；
Pressure gauge 15 is vacuum meter, range -0.10~0MPa；
Suspended body flowmeter 24,0.1~1.0NL/min of range；
Suspended body flowmeter 31,1.0~10.0NL/min of range；
Suspended body flowmeter 20,3.0~30NL/min of range.
The multiple range pressure detecting of covering and flow detection can be realized by connecting different pressure gauge and flowmeter.
Control valve includes controlled valve 9,10,11,12,17,23,26 and pressure reducing valve 14,16, and each controlled valve is for controlling
Gas processed is from gas source interface to the on-off and gas supply flow direction between output interface, valve opening adjustable gas uninterrupted；Decompression
High pressure air reducing in the gas cylinder of access is low-pressure gas needed for output by valve 16, according to measurement condition needs, pressure reducing valve 14
Second depressurized can be achieved, set up output pressure 0.1MPa, end interface exports backward.
Pipe-line system includes gas source interface 1, input/output interface 2,3,4,5,6,7,8,21,27,30 and internal gas pipe
Road, gas source interface 1 can be connected by high-pressure hose with high-pressure air source, and the work of 0~25.0MPa can be inputted for pneumatic detection device
Pressure controls gas source feed open and close by valve 23, and shows input pressure by pressure gauge 25.Access working media, i.e. pressure
Table 25 has instruction, and pressure reducing valve 16 can carry out decompression output to the working media of access, can be set by slowly adjusting pressure reducing valve 16
Output pressure size is shown that output meets the pressure medium of test requirements document by pressure gauge 18；Gas piping connects each interface and survey
Measuring appratus, internal duct arrangement are as shown in Fig. 3；Each input/output interface is used to connect mating gas to pneumatic detection device
Body pipeline fittings, it can be achieved that pressure detecting, flow detection, air source device output and the pneumatic inspection of vacuum and negative pressure system and
Measurement:
(1) pressure detecting:
1. connecting interface 6 can measure the pressure of 0~1MPa inside product systems by precision pressure gauge 19；
2. connecting interface 21 can measure the pressure of 0~0.1MPa inside product systems by precision pressure gauge 22.
(2) flow detection:
1. the gas medium after 14 second depressurized of pressure reducing valve controls gas supply flow direction by valve 17,12, road output can lead to
Cross suspended body flowmeter 20,24 and 31 and measure the gas flow exported from interface 8: a. opens valve 17, closes valve 12, passes through stream
Meter 24,31 can measure the flow within the scope of 0.1~3.0NL/min；B. it opens valve 12, close valve 17, pass through flowmeter
20 can measure the flow within the scope of 3.0~30.0NL/min；
2. interface 7,27 and 30 also can be used as input interface, the gas flowed out out of product systems is measured using suspended body flowmeter
Body flow, the operating condition lower interface 8 open wide: a. interface 27 supplies, and can measure 0.1~3.0NL/min range by flowmeter 24,31
Interior flow, gas are flowed out from interface 8；B. interface 30 supplies, and is measured within the scope of 3.0~30.0NL/min by flowmeter 20
Flow, gas are flowed out from interface 8；
3. can be concatenated in output interface exterior line attachment a greater amount of if the throughput of 30.0NL/min or more need to be detected
The flowmeter of journey.
(3) multiple-channel output:
1. big flow export, connecting interface 5, by pressure reducing valve 16 decompression after gas medium can by valve 11 control open,
It closes, the medium of big flow, valve opening adjusting output flow is exported by output interface 5；
2. small flow output, connecting interface 4, the gas medium after the decompression of pressure reducing valve 16, through metering hole 13 by valve
10 control open and close, the medium of small flow, valve opening adjusting output flow are exported by output interface 4；
3. low pressure exports, the gas medium after the decompression of pressure reducing valve 16 can pass through 14 second depressurized of pressure reducing valve to 0.1MPa
Hereinafter, gas supply flow direction of the low-pressure gas by the control output of valve 17,12, realizes low pressure output by output interface 7,8.
(4) the pneumatic inspection and measurement of vacuum and negative pressure system: interface 2 is controlled to a vacuum pump, and 3 connecting test of interface produces
Product, 9 front end of valve are connected with vacuum pump, and 26 rear end of valve is communicated with atmosphere；Product is vacuumized using vacuum pump, valve
The 9 controllable switchings vacuumized, and vacuum degree in current system, the max vacuum that can be monitored are measured by precise vacuum table 15
Degree is 0.1MPa；Valve 26 can control the switching of current negative pressure system and atmospheric environment.
The implementation steps of this pneumatic detection device are as follows:
Step 1: gas source interface 1 is securely connect with high pressure gas cylinder, and confirmation valve 23 is in closing shape before opening gas source switch
State, pressure reducing valve 16 are in close state.Gas source switch is opened, valve 23 is opened, pressure gauge 25 shows bleed pressure；
Step 2: according to measuring instrument needed for test requirements document Selection experiment, joint test pipeline, confirmation is except valve 23
Other valves are in closed state；Pressure reducing valve 16 is opened, the pressure of test determination is adjusted to, is confirmed by pressure gauge 18 and is depressurized
Pressure afterwards；
Step 3: opening control valve corresponding with connected output interface, realizes gas circuit output, meanwhile, by connecting
The pressure gauge or flowmeter connect reads test data；
Step 4: after the completion of test, closing gas source, close pressure reducing valve 16, the external examination being connected with pneumatic detection device
The pressure tested in pipeline is let out to ground.The control valve that interface is communicated with the atmosphere in pneumatic detection device is opened, pneumatic detection is drained
Device internal duct overbottom pressure；
Step 5: test pipeline is removed, all valves in detection device are closed, total interface covers protection cap.
In conclusion the present invention provides a kind of multrirange multi output pneumatic control detection devices, comprising: shell, instrument
Plate and detachable cover；The instrument board is installed in the shell, and the detachable cover is removably attached on the shell；
Measuring instrument, control valve and pipe-line system are fixedly installed on the instrument board, gas reaches measuring instrument by pipe-line system
Device, control valve are used to control the on-off and flow direction of gas；The measuring instrument includes the survey of at least two different ranges
Measuring appratus, the pipe-line system include at least two output interface.The present invention is integrated with multrirange range detection and multichannel
Output interface, using manually adjust, easy to operate, indicator indicates, can be to every gas of space suit and other closed pressurizing structures
Dynamic performance carries out quickly accurate detection.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.In addition, appended claims purport of the present invention
Covering the whole variations fallen into attached claim scope and boundary or this range and the equivalent form on boundary and is repairing
Change example.
Claims (10)
1. a kind of multrirange multi output pneumatic control detection device characterized by comprising shell, instrument board and detachable cover；
The instrument board is fixed on the shell, and the detachable cover is removably attached on the shell；
Measuring instrument, control valve and pipe-line system are fixedly installed on the instrument board, gas is reached by pipe-line system and surveyed
Measuring appratus, control valve are used to control the on-off and flow direction of gas；
The measuring instrument includes the measuring instrument of at least two different range, the pipe-line system include at least two with
Upper output interface.
2. multrirange multi output pneumatic control detection device according to claim 1, which is characterized in that the measuring instrument
It is real by the pressure gauge and suspended body flowmeter that connect different ranges including precision pressure gauge, pressure vacuum gauge and suspended body flowmeter
The gas stream within the scope of gas pressure detection and 0.1NL/min~30.0NL/min within the scope of existing -0.1MPa~25.0MPa
Amount detection.
3. multrirange multi output pneumatic control detection device according to claim 1, which is characterized in that the control valve
Including controlled valve and pressure reducing valve；The controlled valve can control gas flow and adjusting gas flow size；The pressure reducing valve
For being the low-pressure gas of rear end the high pressure air reducing of front end.
4. multrirange multi output pneumatic control detection device according to claim 1, which is characterized in that the pipe-line system
Including interface and pipeline, the interface includes gas source interface, input interface and output interface；The pipe-line system is installed on described
Instrument back.
5. multrirange multi output pneumatic control detection device according to claim 1-4, which is characterized in that gas source
Interface (1) connects high-pressure air source, and the pressure limit of the high-pressure air source is 0~25.0MPa, by being divided into two after valve (23)
Road, after being transported to the first precision pressure gauge (25) all the way to show that input pressure, another way are depressurized by the first pressure reducing valve (16)
It is divided into four tunnels, the first via is transported to the second precision pressure gauge (18) to show the gas pressure after level-one depressurizes, and the second tunnel is logical
Valve (11) connection output interface (5) is crossed with big flow output gas, third road by valve (10) connection output interface (4) with
Small flow output gas, by the second pressure reducing valve (14), the low pressure after second depressurized is exported on the 4th tunnel；Described first accurate pressure
The detection range of power table (25) is 0~25.0MPa, and the detection range of second precision pressure gauge (18) is 0~1.6MPa.
6. multrirange multi output pneumatic control detection device according to claim 5, which is characterized in that described to pass through second level
Low-pressure gas after decompression is divided into three tunnels, and the first via is directly exported by first interface (7), and the second tunnel passes through the first valve (17)
After be sequentially connected the first suspended body flowmeter (24) and the second suspended body flowmeter (31), and exported by output interface (8), third road
It is exported afterwards by output interface (8) by the second valve (12) connection third suspended body flowmeter (20).
7. multrirange multi output pneumatic control detection device according to claim 6, which is characterized in that first float
Flowmeter (24) and third suspended body flowmeter (20) are separately connected input interface (27), (30), and the input interface (27),
(30) it can be used as input interface with first interface (7), for measuring the flow for the interiors of products gas being attached to；It is described
The detection range of first suspended body flowmeter (24) and the second suspended body flowmeter (31) is 0.1NL/min~3.0NL/min, and third is floating
The detection range of subflow meter (20) is 3.0NL/min~30.0NL/min.
8. multrirange multi output pneumatic control detection device according to claim 1-7, which is characterized in that also wrap
First pressure detection interface (6) and second pressure detection interface (21) are included, third precision pressure gauge (19) and the 4th are separately connected
Precision pressure gauge (22) is used for testing product internal pressure；The detection range of the third precision pressure gauge (19) be 0~
1.0MPa, the detection range of the 4th precision pressure gauge (22) are 0~0.1MPa.
9. multrirange multi output pneumatic control detection device according to claim 1-8, which is characterized in that also wrap
The vacuum interface (2) and product interface (3) communicated is included, vacuum interface (2) one end connection vacuum pump, the other end connect third
Valve (9) and the 4th valve (26), third valve (9) front end are connected with vacuum pump, and the 4th valve (26) rear end is communicated with atmosphere；
Described product interface (3) one end connecting test product, other end connection pressure vacuum gauge (15) are to show inside current production
Vacuum degree；The vacuum pump vacuumizes the test product, and the third valve (9) controls the test product and vacuum pump
On-off, the 4th valve (26) controls the on-off of the test product and atmospheric environment；The pressure vacuum gauge (15)
Detection range is -0.10~0MPa.
10. -9 described in any item multrirange multi output pneumatic control detection devices according to claim 1, which is characterized in that institute
It is fixed on the housing by instrument lock to state detachable cover；Handle is provided on the shell.
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| CN201810726430.XA CN109099963A (en) | 2018-07-04 | 2018-07-04 | A kind of multrirange multi output pneumatic control detection device |
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| CN201810726430.XA CN109099963A (en) | 2018-07-04 | 2018-07-04 | A kind of multrirange multi output pneumatic control detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005950A (en) * | 2019-03-28 | 2019-07-12 | 珠海市奥吉赛科技有限公司 | Vertical shaft medical gas multifunction control system |
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| CN203981382U (en) * | 2014-05-27 | 2014-12-03 | 北京富华惠航飞机附件维修有限责任公司 | Large flow pneumatic accessories testing table |
| CN204612907U (en) * | 2015-04-08 | 2015-09-02 | 南京王行航空附件维修工程有限公司 | A kind of aircraft Pneumatic high-altitude annex proving installation |
| CN106017828A (en) * | 2016-06-22 | 2016-10-12 | 苏州艾酷玛赫设备制造有限公司 | Airtight type air tightness detection apparatus |
| CN107783480A (en) * | 2016-08-25 | 2018-03-09 | 张桂春 | A kind of aircraft pneumatic element integrated test system |
| CN107380482A (en) * | 2017-08-01 | 2017-11-24 | 中国人民解放军海军航空工程学院青岛校区 | Pneumatic accessories of aircraft universal test platform |
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| CN110005950A (en) * | 2019-03-28 | 2019-07-12 | 珠海市奥吉赛科技有限公司 | Vertical shaft medical gas multifunction control system |
| CN110005950B (en) * | 2019-03-28 | 2024-03-01 | 珠海奥吉赛医疗科技股份有限公司 | Shaft medical gas multifunctional control system |
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