CN107102600B - Industrial chromatograph positive pressure inflates explosion-proof interlock - Google Patents
Industrial chromatograph positive pressure inflates explosion-proof interlock Download PDFInfo
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- CN107102600B CN107102600B CN201710412576.2A CN201710412576A CN107102600B CN 107102600 B CN107102600 B CN 107102600B CN 201710412576 A CN201710412576 A CN 201710412576A CN 107102600 B CN107102600 B CN 107102600B
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Program-control systems
- G05B19/02—Program-control systems electric
- G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/00584—Control arrangements for automatic analysers
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of industrial chromatograph positive pressures to inflate explosion-proof interlock, include a shell, a locking three-way air valve is equipped in the shell, the upstream of the locking three-way air valve is equipped with a pressure maintaining valve and flow meters, the downstream of the locking three-way air valve is equipped with one and resets valve, the downstream of the reset valve is equipped with a gate interlock, the downstream of the gate interlock is equipped with a time-delay valve, the downstream of the time-delay valve is equipped with a state switching valve, the downstream of the state switching valve be equipped with a gas electrical relay, an electric control panel and a pressure transmitter.The industrial chromatograph positive pressure is inflated explosion-proof interlock and is mounted in positive pressure inflation explosion-proof chamber, barotropic state in the electric controling part to monitor and detect process-scale chromatography, and lasting is blown into incombustible gas to prevent explosive gas from entering this region.It can power, be automatically performed to chromatograph only after electrical equipment control device is sufficiently purged, explosive-proof grade is high, is particularly suitable for the miniaturization of equipment.
Description
Technical field
The present invention relates to a kind of process-scale chromatographies, more precisely, being a kind of explosion-proof interlocking dress of industrial chromatograph positive pressure inflation
It sets.
Background technique
It is well known that the explosive-proof grade of national regulation will be reached in the electrical equipment that chemical industry scene uses and explosion-proof wanted
It asks, existing industrial chromatograph blast resistance construction is complicated, and submission is huge, uses inconvenience.
Summary of the invention
The present invention mainly solves technical problem present in the prior art, to provide a kind of industrial chromatograph positive pressure
Inflate explosion-proof interlock.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
The invention discloses a kind of industrial chromatograph positive pressures to inflate explosion-proof interlock, includes a shell, the shell
It is inside equipped with a locking three-way air valve, the upstream of the locking three-way air valve is equipped with a pressure maintaining valve and flow meters, the band
Locking three-way air valve includes the outlet of one first three-way air valve and the outlet of one second three-way air valve, the downstream of the locking three-way air valve
Valve is resetted equipped with one, the reset valve resets valve inlet comprising one first, one second reset valve inlet and one resets valve outlet,
The first reset valve inlet is connected with the first three-way air valve outlet, and the downstream of the reset valve is equipped with one
Interlocking, the downstream of the gate interlock are equipped with a time-delay valve, and the time-delay valve includes that a delay valve inlet and a time-delay valve go out
Mouthful, the delay valve inlet is connected with the gate interlock, and the downstream of the time-delay valve is equipped with a state switching valve, institute
The state switching valve stated include one first switching valve inlet, one second switching valve inlet and one switching valve outlet, described first
Switching valve inlet is connected with the delay valve outlet of the time-delay valve, the second switching valve inlet and the described the 2nd 3
Ventilation valve outlet is connected, and the downstream of the state switching valve is equipped with a Qi electrical relay, the Qi electrical relay packet
Containing a first entrance terminal, a second entrance terminal and an outlet terminal, the first entrance terminal and the switching valve
Outlet is connected, and the second entrance terminal is connected with alternating current, and the outlet terminal is connected with an electric control panel,
It transfinites terminal on the electric control panel comprising a tonifying Qi terminal and one, the tonifying Qi terminal changes aeration valve with one and is connected
It connects, the described terminal that transfinites is connected with the second reset valve inlet, and the described aeration valve that changes includes one first to change and fill into
Mouthful, one second change and fill into mouth and one and change benefit outlet, described first changes and fills into mouth and be connected with the tonifying Qi terminal, described
Second changes and fills into mouth and be connected with the outlet of the pressure maintaining valve, and the electric control panel is equipped with a pressure transmitter.
As preferred embodiments of the present invention, the shell is made of steel plate.
Industrial chromatograph positive pressure of the invention inflates explosion-proof interlock and has the advantage that the industrial chromatograph positive pressure
It inflates explosion-proof interlock to be mounted in positive pressure inflation explosion-proof chamber, in the electric controling part to monitor and detect process-scale chromatography
Barotropic state, lasting is blown into incombustible gas to prevent explosive gas from entering this region.Only when electrical equipment control device quilt
It can sufficiently power, be automatically performed to chromatograph after purging, explosive-proof grade is high, and it is compact-sized, it is particularly suitable for the miniaturization of equipment.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the schematic perspective view that industrial chromatograph positive pressure of the invention inflates explosion-proof interlock.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention
It can be easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in Figure 1, it includes a shell that the industrial chromatograph positive pressure, which inflates explosion-proof interlock, which is steel plate system
At.
A locking three-way air valve V1 is equipped in the shell, the upstream of the locking three-way air valve V1 is equipped with a pressure maintaining valve 1 and one
Flowmeter 2, the locking three-way air valve V1 include that one first three-way air valve outlet V11 and one second three-way air valve export V12, the band
The downstream for locking three-way air valve V1 is equipped with one and resets valve V2, which resets comprising one first reset valve inlet V21, one second
Valve inlet V23 and one resets valve outlet V22, which is connected with first three-way air valve outlet V11,
The downstream of reset valve V2 is equipped with a gate interlock V3, and the downstream of gate interlock V3 is equipped with a time-delay valve V4, and time-delay valve V4 includes
An one delay valve inlet V41 and delay valve outlet V42, which is connected with gate interlock V3, time-delay valve V4
Downstream be equipped with a state switching valve V5, state switching valve V5 includes that one first switching valve inlet V51, one second switching valve enters
The switching valve outlet V53 of mouth V52 and one, first switching valve inlet V51 are connected with the delay valve outlet V42 of time-delay valve V4,
The second switching valve inlet V52 is connected with second three-way air valve outlet V12, and the downstream of state switching valve V5 is equipped with one
Gas electrical relay QJ, the gas electrical relay QJ include a first entrance terminal QJ1, a second entrance terminal QJ2 and one outlet
Terminal QJ3, the first entrance terminal QJ1 are connected with switching valve outlet V53, which is electrically connected with city
It connects, outlet terminal QJ3 is connected with an electric control panel 3, transfinites on the electric control panel 3 comprising a tonifying Qi terminal 31 and one
Terminal 32, the tonifying Qi terminal 31 change aeration valve V6 with one and are connected, which is connected with second reset valve inlet V23
Connect, this change aeration valve V6 include one first change fill into a mouthful V61, one second change fill into mouthful V62 and one change benefit outlet V63, this first
It changes and fills into mouthful V61 and be connected with the tonifying Qi terminal 31, this second changes and fill into mouthful V62 and be connected with the outlet of the pressure maintaining valve 1, the electricity
Gas control making sheet 3 is equipped with a pressure transmitter KG1.
The course of work for inflating explosion-proof interlock to the industrial chromatograph positive pressure below is illustrated.
Scavenging period:
User makes locking three-way air valve V1 be in operating position with key, and instrument wind passes through pressure maintaining valve 1, locking three-way air valve
V1 and change aeration valve V6 to positive pressure inflation explosion-proof chamber be passed through air.The air pressure of instrument wind is 0.4-0.6Mpa.At this point, time-delay valve
V4 starts timing, after 15 minutes, is attracted get Qi electrical relay QJ by state switching valve V5, gives chromatography power transmission.
Monitoring and protecting process:
After the normal power transmission of chromatography, that is, enter monitoring guard mode, it is ensured that have an opposite pressure in pressurized enclosure with external environment
Difference.When normal operation, pressure transmitter KG1 monitors always the pressure of positive pressure inflation explosion-proof chamber, when pressure value is set lower than a certain
When definite value, changes tonifying Qi electricity valve V6 and ftercompction is carried out to positive-pressure explosion-proof chamber.When pressure value is higher than a certain setting value, tonifying Qi electricity valve V6 is changed
Stop carrying out ftercompction to positive-pressure explosion-proof chamber.
When pressure transmitter KG1 monitor positive pressure inflation explosion-proof chamber pressure value superpressure (> 800Pa) or under-voltage (<
When 200Pa), at this moment electric control panel 3 resets valve V2 movement to valve V2 mono- electric signal is resetted, cutting gas electrical relay QJ
Gas supply, while original gas being discharged, due to gas the gas supply of electrical relay QJ be cut off, internal electric shock disconnects, to reach
The purpose of power-off then cuts off chromatographic power supply.
When user misoperation opens the front door of microcomputer control unit, gate interlock V3 movement, cutting gas electrical relay QJ
Gas supply, while original gas being discharged.Due to gas the gas supply of electrical relay QJ broken, internal electric shock disconnects, to reach disconnected
The purpose of electricity automatically closes the power supply of instrument, avoids user's explosion danger because caused by chamber door is opened in maloperation.
After resetting valve V2 movement, it is necessary to which the door for opening controller part clicks the positive-pressure explosion-proof positioned at right side and even joins
The reset button of mechanism closes control unit behind the door, and positive-pressure explosion-proof connects interlocking mechanism can task again.
Before instrument carries out normal industry park plan, it should be passed through enough protective gas (air) into pressurized enclosure, make
Explosive mixture concentration is down to lower explosion limit or less in pressurized enclosure.When instrument carries out normal industry park plan, gas is protected
Body (air) continues through pressurized enclosure, makes the normal pressure for keeping opposite instrument installation environment in shell, prevents external mix object
Into pressurized enclosure, safety is good, high reliablity.
Not limited to this, any change or replacement expected without creative work should all be covered in guarantor of the invention
Within the scope of shield.Therefore, protection scope of the present invention should be determined by the scope of protection defined in the claims.
Claims (2)
1. a kind of industrial chromatograph positive pressure inflates explosion-proof interlock, includes a shell, be equipped with one locking three in the shell
The upstream of breather valve (V1), the locking three-way air valve (V1) is equipped with a pressure maintaining valve (1) and flow meters (2), the band
Locking three-way air valve (V1) includes one first three-way air valve outlet (V11) and one second three-way air valve outlet (V12), and described is locking
The downstream of three-way air valve (V1) be equipped with one reset valve (V2), the reset valve (V2) include one first reset valve inlet (V21),
One second, which resets valve inlet (V23) and one, resets valve outlet (V22), and described first resets valve inlet (V21) and described the
One three-way air valve outlet (V11) is connected, and the downstream of the reset valve (V2) is equipped with a gate interlock (V3), the gate interlock
(V3) downstream is equipped with a time-delay valve (V4), and the time-delay valve (V4) includes that delay valve inlet (V41) and a time-delay valve go out
Mouth (V42), the delay valve inlet (V41) are connected with the gate interlock (V3), the downstream of the time-delay valve (V4)
Equipped with a state switching valve (V5), the state switching valve (V5) includes one first switching valve inlet (V51), one second switching
Valve inlet (V52) and switching valve outlet (V53), first switching valve inlet (V51) and the time-delay valve (V4)
Delay valve outlet (V42) is connected, and second switching valve inlet (V52) and second three-way air valve export (V12)
Be connected, the downstream of the state switching valve (V5) be equipped with a gas electrical relay (QJ), the gas electrical relay (QJ)
Include a first entrance terminal (QJ1), a second entrance terminal (QJ2) and outlet terminal (QJ3), the first entrance end
Sub (QJ1) is connected with the switching valve outlet (V53), and the second entrance terminal (QJ2) is connected with alternating current, described
Outlet terminal (QJ3) be connected with an electric control panel (3), on the electric control panel (3) include a tonifying Qi terminal
(31) it transfinites terminal (32) with one, the tonifying Qi terminal (31) changes aeration valve (V6) with one and is connected, the terminal that transfinites
(32) it resets valve inlet (V23) with described second to be connected, described change aeration valve (V6) includes one first to change and fill into mouth
(V61), it one second changes and fills into mouth (V62) and one and change benefit outlet (V63), described first changes and fill into mouth (V61) and the benefit
Gas terminal (31) is connected, and described second changes and fill into mouth (V62) and be connected with the outlet of the pressure maintaining valve (1), described
Electric control panel (3) is equipped with a pressure transmitter (KG1).
2. industrial chromatograph positive pressure according to claim 1 inflates explosion-proof interlock, which is characterized in that the shell
It is made of steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412576.2A CN107102600B (en) | 2017-06-05 | 2017-06-05 | Industrial chromatograph positive pressure inflates explosion-proof interlock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412576.2A CN107102600B (en) | 2017-06-05 | 2017-06-05 | Industrial chromatograph positive pressure inflates explosion-proof interlock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107102600A CN107102600A (en) | 2017-08-29 |
| CN107102600B true CN107102600B (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710412576.2A Expired - Fee Related CN107102600B (en) | 2017-06-05 | 2017-06-05 | Industrial chromatograph positive pressure inflates explosion-proof interlock |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843681A (en) * | 2017-12-19 | 2018-03-27 | 上海神开石油科技有限公司 | A kind of explosion-proof chromatograph of well head |
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| CN107102600A (en) | 2017-08-29 |
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Granted publication date: 20190212 |