CN209372740U - Fuel gas detection system - Google Patents
Fuel gas detection system Download PDFInfo
- Publication number
- CN209372740U CN209372740U CN201822254456.7U CN201822254456U CN209372740U CN 209372740 U CN209372740 U CN 209372740U CN 201822254456 U CN201822254456 U CN 201822254456U CN 209372740 U CN209372740 U CN 209372740U
- Authority
- CN
- China
- Prior art keywords
- detecting instrument
- terminals
- power supply
- connect
- switch
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of fuel gas detection system, including gas detecting instrument, gas detecting instrument detects imflammable gas concentration and generates current signal according to the concentration of imflammable gas；Further include: the first connecting terminal being electrically connected with gas detecting instrument；First switch, the first switch are electrically connected with the first connecting terminal；DC power supply, the straight line power supply are electrically connected with the first connecting terminal；The current signal that gas detecting instrument generates is converted to analog signal output by the conversion module being electrically connected respectively with the first connecting terminal and DC power supply, the conversion module.The utility model has the advantages that installation multiple-gas detector can be compatible with.
Description
Technical field
The utility model relates to combustible gas monitoring field, in particular to a kind of fuel gas detection system.
Background technique
Domestic at present combustible gas gas-detecting device mainly include the following types:
1, portable gas alarm, such device are mainly carried, are powered using battery, carrier is according to the area
Domain pernicious gas that may be present carries corresponding gas detecting instrument, detector can the correspondence gas of real-time display region contain
Amount, the data of detection cannot enter detection system by signal transmission form.
2, gas detecting instrument is divided into two-wire system, three-wire system, three kinds of four-wire system according to device working principle is different again.
Two-wire system gas detecting instrument needs to be equipped with corresponding distributor for defeated to the power supply of on-site test probe and signal
Out.
Three-wire system gas detecting instrument needs to be equipped with corresponding controller and is powered and signal acquisition.Such gas detecting instrument
It is currently domestic most commonly used one kind.
Four-wire system gas detecting instrument is usually independent for 220VAC power supply, has individual signal output end, does not need distribution
Device and controller.
Different types of gas detecting instrument requires to be equipped with different since working principle and signal producing method are different
Signal conversion equipment can not accomplish that substitution uses between each other.If the controller damage of certain detection device in production scene,
When spare part could not be in time, the fuel gas detection in the region will sink into state of paralysis.Simultaneously as testing principle
Difference, wiring of on-site signal line etc. is different, will cause that entire detection system route is mixed and disorderly, be unfavorable for failure inspection,
It excludes.
Summary of the invention
The purpose of this utility model is to provide a kind of fuel gas detection systems of the compatible installation multiple-gas detector of energy
System.
Realize that the technical solution of above-mentioned purpose is as follows:
Fuel gas detection system, including gas detecting instrument, gas detecting instrument detects imflammable gas concentration and basis can
The concentration of combustion property gas generates current signal；Further include:
The first connecting terminal being electrically connected with gas detecting instrument；
First switch, the first switch are electrically connected with the first connecting terminal；
DC power supply, the DC power supply are electrically connected with the first connecting terminal；
The conversion module being electrically connected respectively with the first connecting terminal and DC power supply, the conversion module produce gas detecting instrument
Raw current signal is converted to analog signal output.
The fuel gas detection system of the utility model, according to the type of gas detecting instrument, adjustment and the first connecting terminal
The mode of connection and select isolator or distributor as converter, therefore, the fuel gas detection system of the utility model,
And to install one of two-wire system gas detecting instrument, three-wire system gas detecting instrument or four-wire system gas detecting instrument, so that two wires
The gas detecting instrument of gas detecting instrument processed, three-wire system gas detecting instrument or four-wire system gas detecting instrument is in certain detection of production scene
The controller of device damages, and when spare part could not be in time, can choose another gas detecting instrument and is installed, example
Such as, when three-wire system gas detecting instrument damages, two-wire system gas detecting instrument or four-wire system gas detecting instrument and first be can choose
Connecting terminal is attached, and this ensures that, the fuel gas in the region to detect the state that will not paralyse, and is obviated simultaneously
Because of the difference of testing principle, wiring of on-site signal line etc. is different, causes entire detection system route mixed and disorderly, is unfavorable for event
The factor of inspection, the exclusion of barrier.Therefore, have the advantages that easy to use.
Detailed description of the invention
Fig. 1 is the circuit block diagram of the fuel gas detection system in the utility model；
Fig. 2 is the schematic diagram of the 1st embodiment of the utility model；
Fig. 3 is the schematic diagram of the 2nd embodiment of the utility model；
Fig. 4 is the schematic diagram of the 3rd embodiment of the utility model；
Fig. 5 is that embodiment 1 to 3 is integrated in first case intracorporal schematic diagram；
Label in Figure of description:
1 it is gas detecting instrument, 11 be power supply positive terminal, 12 be signal positive terminal, 13 be common end, 14 is that signal is negative
Extremely；
2 be the first connecting terminal, 21 be the first terminals, 22 be the second terminals, 23 be third terminals；
3 it is first switch, 4 be DC power supply, 5 be conversion module, 6 is Analog input mModule；
A is the first cabinet, and B is the second cabinet.
Specific embodiment
As shown in Figure 1, the fuel gas detection system of the utility model, including gas detecting instrument 1, the first connecting terminal 2,
First switch 3, DC power supply 4, conversion module 5, Analog input mModule 6, gas detecting instrument 1 detect imflammable gas concentration simultaneously
Current signal is generated according to the concentration of imflammable gas, gas concentration difference can generate not in 1 current loop of gas detecting instrument
Same current value；First connecting terminal 2 is electrically connected with gas detecting instrument 1, and first switch 3 is electrically connected with the first connecting terminal, straight line
Power supply 4 is electrically connected with the first connecting terminal 2；Conversion module 5 is electrically connected with the first connecting terminal 2 and DC power supply 4 respectively, this turn
The current signal that gas detecting instrument 1 generates is converted to analog signal output by mold changing block 5, and the electric current that current signal is 4-20mA is believed
Number.Analog input mModule 6 acquires the analog signal that conversion module 5 exports and uploads to host computer, computer master system
It is realized according to the data of module acquisition and shows specific data.Conversion module 5 in the utility model has fully considered that it is extended
Property, it is uploaded to level two when needing will test signal, two ways, which can be used, to be carried out data transmission, and first way is direct
Analog signals are divided into two-way at isolator, the first via is acquired for primary system, and the second tunnel is acquired for level two,
If third road signal is also needed to export, it is only necessary to increase the isolator of an one-to-two.The second way is by logical
The mode of news directly uploads the data of computer acquisition by software.
Embodiment 1
As shown in Fig. 2, the connecting terminal 2 includes the first terminals 21, the second terminals 22, third terminals 23, institute
The a part for stating first switch 3 is connect with the anode of DC power supply 4, another part and DC power supply 4 of the first switch 3
Cathode connection, the part that first switch 3 connects the anode of DC power supply 4 also connect with the first terminals 21, the connection of first switch 3
The part of 4 cathode of DC power supply is also connect with third terminals 23, and the second terminals 22 also connect with the positive terminal of conversion module 5
It connects, third terminals 23 are also connect with the negative pole end of conversion module 5.The first switch 3 is breaker, the DC power supply 4
The preferential DC power supply for using 24V.
The conversion module 5 preferentially uses isolator, and the current signal that gas detecting instrument 1 generates carries out defeated after isolation conversion
Out to Analog input mModule 6.DC power supply 4 also provides the DC voltage of 24V for isolator.The described in when detection system works
One switch 3 is kept closed.Analog input mModule 6 is DCS (dcs) or PLC (programmable logic control
Device processed) system analog module.
The gas detecting instrument 1 is three-wire system gas detecting instrument, and the output end of three-wire system gas detecting instrument includes power supply electricity
Source positive terminal 11, signal positive terminal 12 and common end 13, power supply positive terminal 1 are connect with first terminals 21, letter
Number positive terminal 12 is connect with second terminals 22, and common end 13 is connect with the third terminals 23, public in the present embodiment
End 13 is the shared end of power cathode and signal cathode altogether.
The utility model, which has abandoned every kind of traditional gas gas detector and needs to be equipped with corresponding controller, just can be carried out
The working method of data acquisition.It only needs to provide 24VDC power supply, after breaker closing, gas gas to gas on-site detector
It brings into operation after body detector access 24VDC power supply, while gas gas detector internal circuit can be in the anode of signal end
Can have 24VDC power supply, the anode of gas gas detector signal end anode and isolator is connected, the cathode of isolator with
The cathode of 24VDC power supply is connected, and forms a complete electric current between three kinds of power supply, gas detecting instrument and isolator equipment and returns
Road, after gas on-site content changes, the current value in gas detecting instrument circuit can change accordingly, isolator pair
Output is acquired and calculates to Computer signal module after the current value of variation carries out isolation pick-up.
Embodiment 2
As shown in figure 3, the connecting terminal 2 includes the first terminals 21, the second terminals 22, third terminals 23, institute
The a part for stating first switch 3 is connect with the anode of DC power supply 4, another part and DC power supply 4 of the first switch 3
Cathode connection, the part that first switch 3 connects the anode of DC power supply 4 also connect with the first terminals 21, the connection of first switch 3
The part of 4 cathode of DC power supply is also connect with third terminals 23；Second terminals 22 also connect with the positive terminal of conversion module 5
It connects, third terminals 23 are also connect with the negative pole end of conversion module 5.The first switch 3 is breaker, the DC power supply 4
The preferential DC power supply for using 24V.
The conversion module 5 exported after preferentially using distributor, the current signal that gas detecting instrument 1 generates to be converted to
Analog input mModule 6.In addition, distributor be two-wire system gas detecting instrument be powered, therefore, two-wire system gas detecting instrument without
Need external power supply.DC power supply 4 also provides the DC voltage of 24V for isolator.First switch 3 remains off, either
No in running order, first switch 3 remains off.Analog input mModule 6 is the simulation of DCS or PLC system
Measure module.
The gas detecting instrument 1 be two-wire system gas detecting instrument, the output end of two-wire system gas detecting instrument include signal just
Extreme 12 and signal negative pole end 14, signal positive terminal 12 connect with second terminals 22, signal negative pole end 14 with it is described
Third terminals 23 connect.
Embodiment 3
As shown in figure 4, the connecting terminal 2 includes the first terminals 21, the second terminals 22, third terminals 23, institute
The a part for stating first switch 3 is connect with the anode of DC power supply 4, another part and DC power supply 4 of the first switch 3
Cathode connection, the part that first switch 3 connects the anode of DC power supply 4 also connect with the first terminals 21, the connection of first switch 3
The part of 4 cathode of DC power supply is also connect with third terminals 23；Second terminals 22 also connect with the positive terminal of conversion module 5
It connects, third terminals 23 are also connect with the negative pole end of conversion module 5.The first switch 3 is breaker, the DC power supply 4
The preferential DC power supply for using 24V.
The conversion module 5 preferentially uses isolator, and the current signal that gas detecting instrument 1 generates carries out defeated after isolation conversion
Out to Analog input mModule 6.DC power supply 4 also provides the DC voltage of 24V for isolator.First switch 3 remains open shape
State, regardless of whether in running order, first switch 3 is remained off.Analog input mModule 6 is DCS PLC system
The analog module of system.
The gas detecting instrument 1 be four-wire system gas detecting instrument, the output end of four-wire system gas detecting instrument include signal just
Extreme 12 and signal negative pole end 14, signal positive terminal 12 connect with second terminals 22, signal negative pole end 14 with it is described
Third terminals 23 connect；Four-wire system gas detecting instrument voltage required when working is 220V voltage, therefore, the inspection of four-wire system gas
Survey the power supply that instrument needs to connect 220V.
As shown in figure 5, two-wire system gas detecting instrument, three-wire system gas detecting instrument, four-wire system gas detecting instrument will be connected
The first cabinet A is separately mounted to for 34,3 conversion modules 5 of DC power supply of first switch 3,3 of the first connecting terminal 2,3
It is interior, and 3 Analog input mModules 6 are mounted in the second cabinet B, when specifically used, user selects two wires as needed
One or more of gas detecting instrument processed, three-wire system gas detecting instrument, four-wire system gas detecting instrument, according to above embodiment
Wiring requirement in 1 to 3, connect with wherein one or more first connecting terminals 2, forms the inspection of one or more imflammable gas
Examining system, when forming multichannel imflammable gas detection system, can choose it is therein connect gas detecting instrument all the way, and in addition
All the way or two-way is not connected to gas detecting instrument using as spare.
The advantage of the utility model be its abandoned completely the gas alarm controller of original band 220V forceful electric power and
Different type, which is popped one's head in, needs to be equipped with the limitation of corresponding controller, and not collinear system has been fully considered on interfacility link road
Equipment catenation principle, just can access different types of detection probe using identical signal conversion line, simplify detection line
Road process, the complete production of system is simple, scalability and adaptable.Use safe and reliable DC power supply for conversion module confession
Distribution, the power supply and signal of each probe carry out independent isolation processing, even if the case where route has short circuit or seals in forceful electric power
Occur also can only impact an individual route or relevant equipment, so as to avoid because line short or sealing in
Whole system fault condition caused by forceful electric power occurs.Distributed collection and the centralized processing of data are carried out using computer DCS program,
System flow is simple, facilitates the acquisition of data and the maintenance of record and hardware device, when in system some hardware break down,
When no signal inputs, DCS system can carry out immediately warning note in host computer, and indicate faulty hardware position, facilitate dimension
Protect personnel inspection processing.Each hardware of system is conventional equipment, is convenient for tissue spare part.In addition its data is all drawn in coking operation
It is shown and is alarmed on face, realize 24 hours someone's monitored states, it can to the case where live imflammable gas concentration over-standard
Discovery in time avoids generation personnel's imflammable gas intoxication accident from occurring to greatest extent.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical new to this
The range of type is defined, and under the premise of not departing from the design spirit of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (7)
1. fuel gas detection system, including gas detecting instrument, gas detecting instrument detects imflammable gas concentration and according to flammable
Property gas concentration generate current signal；It is characterized by further comprising:
The first connecting terminal being electrically connected with gas detecting instrument；
First switch, the first switch are electrically connected with the first connecting terminal；
DC power supply, the DC power supply are electrically connected with the first connecting terminal；
The conversion module being electrically connected respectively with the first connecting terminal and DC power supply, the conversion module generate gas detecting instrument
Current signal is converted to analog signal output.
2. fuel gas detection system according to claim 1, which is characterized in that the connecting terminal includes the first wiring
End, the second terminals, third terminals, a part of the first switch and the anode of DC power supply connect, and described first opens
Another part of pass and the cathode of DC power supply connect, and the part of the first switch connection DC power anode also connects with first
The part of line end connection, first switch connection DC power cathode is also connect with third terminals；
The gas detecting instrument is three-wire system gas detecting instrument, and the output end of three-wire system gas detecting instrument includes power supply anode
End, signal positive terminal and common end, power supply positive terminal are connect with first terminals, signal positive terminal and described the
The connection of two terminals, common end is connect with the third terminals；
The conversion module is isolator；
The first switch is kept closed when detection system work.
3. fuel gas detection system according to claim 1, which is characterized in that the connecting terminal includes the first wiring
End, the second terminals, third terminals, a part of the first switch and the anode of DC power supply connect, and described first opens
Another part of pass and the cathode of DC power supply connect, and the part of the first switch connection DC power anode also connects with first
The part of line end connection, first switch connection DC power cathode is also connect with third terminals；
The gas detecting instrument is two-wire system gas detecting instrument, the output end of two-wire system gas detecting instrument include signal positive terminal with
And signal negative pole end, signal positive terminal are connect with second terminals, signal negative pole end is connect with the third terminals；
The conversion module is distributor；
The first switch remains off.
4. fuel gas detection system according to claim 1, which is characterized in that the connecting terminal includes the first wiring
End, the second terminals, third terminals, a part of the first switch and the anode of DC power supply connect, and described first opens
Another part of pass and the cathode of DC power supply connect, and the part of the first switch connection DC power anode also connects with first
The part of line end connection, first switch connection DC power cathode is also connect with third terminals；
The gas detecting instrument is four-wire system gas detecting instrument, the output end of four-wire system gas detecting instrument include signal positive terminal with
And signal negative pole end, signal positive terminal are connect with second terminals, signal negative pole end is connect with the third terminals；
The conversion module is isolator；
The first switch remains off.
5. according to claim 1 to fuel gas detection system described in one of 4, which is characterized in that the first switch is disconnected
Road device.
6. according to claim 1 to fuel gas detection system described in one of 4, which is characterized in that the DC power supply is 24V
DC power supply.
7. according to claim 1 to fuel gas detection system described in one of 4, which is characterized in that further include analog input
Module, the analog signal of Analog input mModule acquisition conversion module output simultaneously upload to host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254456.7U CN209372740U (en) | 2018-12-29 | 2018-12-29 | Fuel gas detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822254456.7U CN209372740U (en) | 2018-12-29 | 2018-12-29 | Fuel gas detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372740U true CN209372740U (en) | 2019-09-10 |
Family
ID=67828387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822254456.7U Active CN209372740U (en) | 2018-12-29 | 2018-12-29 | Fuel gas detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209372740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989550A (en) * | 2019-11-19 | 2020-04-10 | 邯郸钢铁集团有限责任公司 | Operation method for searching strong current in series of direct current module of automatic control system without shutdown |
| CN112964913A (en) * | 2021-03-02 | 2021-06-15 | 三一重能股份有限公司 | Analog quantity signal acquisition device and control cabinet |
-
2018
- 2018-12-29 CN CN201822254456.7U patent/CN209372740U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989550A (en) * | 2019-11-19 | 2020-04-10 | 邯郸钢铁集团有限责任公司 | Operation method for searching strong current in series of direct current module of automatic control system without shutdown |
| CN112964913A (en) * | 2021-03-02 | 2021-06-15 | 三一重能股份有限公司 | Analog quantity signal acquisition device and control cabinet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103997298B (en) | Monitoring data collecting terminal of photovoltaic power station and monitoring data system | |
| CN205067643U (en) | Direct current system's of transformer substation distributed insulation monitoring and warning device | |
| CN204231318U (en) | A kind of ac solid relay | |
| CN106291201A (en) | The lightning monitoring of a kind of lightning protection box and deterioration state monitoring system and method | |
| CN104135074A (en) | Extra-high-voltage substation equipment temperature monitoring and alarming method based on outlier detection | |
| CN209372740U (en) | Fuel gas detection system | |
| CN205232151U (en) | Photovoltaic exchanges measurement and control device that converges | |
| CN106768018B (en) | Site installs the on-line monitoring and diagnostic system and method for second power equipment | |
| CN207074246U (en) | A kind of GIS partial discharge on-line monitoring system | |
| CN104898580A (en) | Wireless oil pumping unit controller with three-phase electric acquisition | |
| CN109828166A (en) | A kind of intelligent monitor system and its intelligent monitoring method based on transformation cabinet failure | |
| CN103675606A (en) | Bridge type direct-current fault monitoring alarm | |
| CN201364482Y (en) | Integrated measurement, monitoring alarm and control system | |
| CN105759172A (en) | Active grounding system abnormality detection device | |
| CN102944580B (en) | Colliery self diagnosis methane transducer and self-diagnosing method | |
| CN205829309U (en) | A kind of intelligent power distribution monitoring device | |
| CN106774026A (en) | A kind of intelligent line controller | |
| CN202814597U (en) | High-voltage power transmission line temperature measuring system | |
| CN109324257A (en) | Residual current on-Line Monitor Device | |
| CN206193160U (en) | Direct current equipment frame insulation monitoring and warning device among subway direct current traction power supply system | |
| CN112557784B (en) | Automatic analysis device for power grid alarm | |
| CN212340302U (en) | High-voltage ring main unit all-state sensing system | |
| CN211452652U (en) | 10KV middling pressure power cable temperature electric power operation maintenance detection device | |
| CN204390472U (en) | A kind of panel box power information sensing and controlling system | |
| CN208092163U (en) | A kind of EKL5-D-Q novel cables type accident indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |