CN203672816U - Resistance measuring device of coal sample gas desorption instrument - Google Patents
Resistance measuring device of coal sample gas desorption instrument Download PDFInfo
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- CN203672816U CN203672816U CN201420028616.5U CN201420028616U CN203672816U CN 203672816 U CN203672816 U CN 203672816U CN 201420028616 U CN201420028616 U CN 201420028616U CN 203672816 U CN203672816 U CN 203672816U
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- coal sample
- desorption
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- current signal
- desorb
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a resistance measuring device of a coal sample gas desorption instrument. The resistance measuring device comprises a coal sample tank, a desorption measuring tube, a main control unit and a power supply, wherein the main control unit comprises a current signal acquisition module and a processing unit, the coal sample tank is connected with the desorption measuring tube through a gas guide pipe, two metal guide pieces are arranged inside the desorption measuring tube and connected with the current signal acquisition module respectively through leads, a signal output end of the current signal acquisition module is connected with the processing unit, and positive and negative poles of the power supply are connected with the two metal guide pieces respectively. In a desorption process, a desorbed gas enters the desorption measuring tube, so that the resistance value is changed due to the volume change of a conducting liquid, the current signal acquisition module transmits acquired current signals to the processing unit, and the processing unit measures the resistance value in real time. The processing unit can be connected with a display unit as well as a host through a communication unit, so that the resistance value measured in real time is displayed, and the volume change of the desorbed gas can be analyzed according to the change of the resistance value.
Description
Technical field
The utility model belongs to the experiment of coal sample desorption of mash gas field, particularly a kind of electric resistance measuring apparatus of coal sample desorption of mash gas instrument.
Background technology
Particulate coal desorption of mash gas rule is that coal seam gas-bearing capacity is measured, in outburst hazard prediction, prominent development process broken coal Gas, adopt one of key scientific problems of the aspects such as coal breakage Gas and cbm development.The desorption of mash gas rule of coal body can be used for determining coal seam gas-bearing capacity, reflection coal and gas outburst risk, lot of domestic and foreign scholar has carried out a large amount of research to the desorption of mash gas rule of particulate coal, calculate the loss gas amount in gas bearing capacity mensuration process according to desorption of mash gas rule on the one hand, seek outburst danger prediction index and critical value thereof according to adsorption law on the other hand.Present stage, the research method of coal gas adsorption law mainly adopted absorption-desorption experiment method, absorption-desorption experiment method is to build laboratory experiment system, carry out the laboratory experiment at coal gas desorb initial stage, (be mainly metamorphic grade by the environmental parameter (being mainly the gas pressure of adsorption equilibrium) of change coal gas desorb and the physical property of experiment coal sample itself, destructiveness, granularity etc.) study the desorption of mash gas initial stage rule of coal body, but the desorption of mash gas initial stage rule of research coal body is mainly to measure coal sample desorption of mash gas speed and desorption quantity, the determinator of coal sample desorption of mash gas speed and desorption quantity is at present: coal sample tank is connected with desorb graduated cylinder by the wireway with syringe needle, graduated cylinder is marked with corresponding scale.Use this device to have certain deficiency:
1. need experimenter to continue 2 hours or longer time record data, waste plenty of time and energy;
2. in the time reading the scale of liquid volume in cylinder, due to the angle difference that everyone observes liquid level, easily cause reading to have error;
3. in the time reading the scale of liquid volume in cylinder, experimenter needs limit to record coal sample desorption time, and limit record data easily cause temporal error.
In the desorb buret of test coal sample desorption of mash gas speed, because constantly entering desorb buret, stripping gas cause the volume of desorption quantity liquid in pipe to change, while measuring desorption of mash gas speed, need to learn volume change, test volume changes at present various ways, but does not also occur the device of the resistance of test liquid.
Utility model content
The purpose of this utility model is to provide a kind of electric resistance measuring apparatus of coal sample desorption of mash gas instrument, can real-time testing desorb buret in the resistance value of conducting liquid.
For achieving the above object, the technical solution of the utility model is: the electric resistance measuring apparatus of coal sample desorption of mash gas instrument, comprise coal sample tank, desorb buret, main control unit and power supply, described main control unit comprises current signal collection module and processing unit, described coal sample tank is connected with desorb buret by wireway, there are two metallic laminas desorb buret inside, two metallic laminas are connected with current signal collection module by wire respectively, the signal output part of current signal collection module connects processing unit, described power positive cathode is connected with two metallic laminas respectively.
Described two metallic laminas are separately fixed at the both sides of desorption quantity pipe internal surface, and it is curved that metallic laminas is attached to desorption quantity pipe internal surface, and two metallic laminas are not joined.
On described desorb buret top, fix two binding posts, two metallic laminas are connected with two binding posts by wire respectively, and two binding posts are connected with current signal collection module by wire respectively.
Described processing unit connects display unit.
Described processing unit connects communication unit, and communication unit connects main frame.
The utility model is by fixing two metallic laminas in desorb buret inside, and the resistance value of real-time testing desorb buret internal liquid, to change according to resistance change analysis volume.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the utility model device;
Fig. 2 is the theory diagram of the embodiment 1 of the main control unit described in Fig. 1;
Fig. 3 is the theory diagram of the embodiment 2 of the main control unit described in Fig. 1;
Coal sample tank holder 1, coal sample tank 2, coal sample cover 3, air guide syringe needle 4, wireway 5, connecting pipe 6, draft tube 7, firm banking 8, feed pathway 9, liquid flowing valve 10, discharging tube 11, metallic laminas 12, desorption chamber 13, scale 14, desorb buret 15, binding post 16, wire 17, main control unit 18.
Embodiment
Embodiment 1:
As shown in Figures 1 and 2, a kind of electric resistance measuring apparatus of coal sample desorption of mash gas instrument, comprise coal sample tank 2, desorb buret 15, main control unit 18 and power supply, described main control unit 18 comprises current signal collection module and processing unit, the signal output part of current signal collection module connects the signal input part of processing unit, the signal output part of processing unit connects display unit, shows in real time the resistance value recording.
Coal sample tank 2 is positioned on coal sample tank holder 1, and coal sample tank 2 ports are provided with coal sample cover 3;
Described coal sample tank 2 is connected by wireway 5 with desorb buret 15, and wireway 5 one end are provided with air guide syringe needle 4, and air guide syringe needle 4 inserts coal sample cover 3 and realizes and being communicated with of coal sample tank 2, and wireway 5 other ends are connected by connecting pipe 6 and draft tube 7.
Open liquid flowing valve 10, in desorption chamber 13, inject conducting liquid by feed pathway 9, after filling, close liquid flowing valve 10, by wire 17, binding post 16 and the current signal collection module of main control unit 18 are coupled together; Coal sample is packed in coal sample tank 2, tighten immediately coal sample cover 3, coal sample tank 2 is positioned on coal sample tank holder 1, air guide syringe needle 4 is inserted to coal sample cover 3.
Stripping gas enters desorb buret 15, desorb buret 15 has liquid to discharge, cause the resistance of conducting liquid in desorb buret 15 to change, thereby electric current is wherein changed, current signal collection module gathers current signal by metallic laminas 12 and wire 17; The current signal collecting is flowed to processing unit by current signal collection module, and processing unit draws according to supply voltage and current value the resistance value recording in real time.Processing unit is presented at the resistance value recording in real time on display unit.
Embodiment 2:
As shown in Figures 1 and 3: described processing unit also can connect main frame by communication unit, on main frame, show the resistance value recording in real time.
The present embodiment other parts are with embodiment 1.
The utility model can reflect the resistance variations of conducting liquid in coal sample desorption of mash gas process intuitively, to change according to resistance change analysis volume.
Claims (5)
1. the electric resistance measuring apparatus of a coal sample desorption of mash gas instrument, comprise coal sample tank, it is characterized in that: also comprise desorb buret, main control unit and power supply, described main control unit comprises current signal collection module and processing unit, described coal sample tank is connected with desorb buret by wireway, there are two metallic laminas desorb buret inside, two metallic laminas are connected with current signal collection module by wire respectively, the signal output part of current signal collection module connects processing unit, and described power positive cathode is connected with two metallic laminas respectively.
2. the electric resistance measuring apparatus of coal sample desorption of mash gas instrument as claimed in claim 1, it is characterized in that: described two metallic laminas are separately fixed at the both sides of desorption quantity pipe internal surface, it is curved that metallic laminas is attached to desorption quantity pipe internal surface, and two metallic laminas are not joined.
3. the electric resistance measuring apparatus of coal sample desorption of mash gas instrument as claimed in claim 1, it is characterized in that: on described desorb buret top, fix two binding posts, two metallic laminas are connected with two binding posts by wire respectively, and two binding posts are connected with current signal collection module by wire respectively.
4. the electric resistance measuring apparatus of coal sample desorption of mash gas instrument as claimed in claim 1, is characterized in that: described processing unit connects display unit.
5. the electric resistance measuring apparatus of coal sample desorption of mash gas instrument as claimed in claim 1, is characterized in that: described processing unit connects communication unit, and communication unit connects main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028616.5U CN203672816U (en) | 2014-01-16 | 2014-01-16 | Resistance measuring device of coal sample gas desorption instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420028616.5U CN203672816U (en) | 2014-01-16 | 2014-01-16 | Resistance measuring device of coal sample gas desorption instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203672816U true CN203672816U (en) | 2014-06-25 |
Family
ID=50969097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420028616.5U Expired - Fee Related CN203672816U (en) | 2014-01-16 | 2014-01-16 | Resistance measuring device of coal sample gas desorption instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203672816U (en) |
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2014
- 2014-01-16 CN CN201420028616.5U patent/CN203672816U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20160116 |
|
| EXPY | Termination of patent right or utility model |