CN201687464U - Drilling gas inrush initial velocity measurement device - Google Patents
Drilling gas inrush initial velocity measurement device Download PDFInfo
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- CN201687464U CN201687464U CN2010202117750U CN201020211775U CN201687464U CN 201687464 U CN201687464 U CN 201687464U CN 2010202117750 U CN2010202117750 U CN 2010202117750U CN 201020211775 U CN201020211775 U CN 201020211775U CN 201687464 U CN201687464 U CN 201687464U
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- initial velocity
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Abstract
The utility model discloses a drilling gas inrush initial velocity measurement device, relating to a gas flow rate measurement device. The drilling gas inrush initial velocity measurement device comprises a sealing chamber, a multi-position shift valve and a pressure gauge, wherein a gas inlet pipe and a gauge interface are arranged on the sealing chamber, the gauge interface is connected with the pressure gauge, the multi-position shift valve is arranged at one end of the sealing chamber and consists of a rotor and a stator which are overlapped, a diversion hole and a locating resistance are arranged on the stator, the rotor is at least provided with two gear jet orifices which correspond to the diversion hole and have different sizes and also locating grooves which have the same amount as the gear jet orifices, and the locating grooves correspond to the locating resistance. The measurement device has the advantages that the structure is compact, the operation is convenient, and the initial velocity can be directly obtained by converting pressure reading lookup of the pressure gauge into flow rate reading; a measured flow rate is a measured present instantaneous flow rate; and a measured gear is adjustable, therefore, the measurement device has larger measurement range, and the measurement accuracy is enhanced.
Description
Technical field
The utility model relates to the gas flow rate determinator, specifically a kind of boring gas initial velocity determinator of gushing out.
Background technology
The boring gas initial velocity determinator of gushing out is mainly used in channel of coal mining working surface and directly measures the coal bed drilling gas initial velocity of gushing out, the gas outburst risk of prediction working face of coal seam.For coal seam getting working face outburst hazard prediction work is passed through a kind of tester.At present, it mainly is TWY type and ZLD-2 type that China is used to measure the coal bed drilling gas initial velocity of gushing out, and wherein, the dangerous precursor major defect of TWY type gas is a complicated operation, use inconvenient, the manufacturing cost height; ZLD-2 type gas surveying instrument is a kind of multistage flow meter, and major defect is the reading inconvenience, and the water capacity easily sprayed when pressure reduction was big, and nozzle number is too much, uses inconvenient.And what most of original measuring apparatuss were measured is the average of flow velocity in the certain hour, and certainty of measurement is not high.
The utility model content
Technical problem to be solved in the utility model provides a kind of boring gas initial velocity determinator of gushing out, and has easy to usely, and reading is directly perceived, measures the adjustable characteristics of gear.
The utility model is the deficiency that solves the problems of the technologies described above, the technical scheme that is adopted is: a kind of boring gas initial velocity determinator of gushing out, form by closed chamber, multidigit shift valve and pressure meter, closed chamber is provided with air inlet pipe and table interface, the table interface is connected with pressure meter, the multidigit shift valve is arranged on an end of closed chamber, is made up of the rotor and the stator of overlapping setting.Be provided with pod apertures and location resistance on stator, be provided with two corresponding with pod apertures and differ in size gear spray orifices at least on rotor, also be provided with the locating slot identical with the gear nozzle hole number on rotor, the position of locating slot is corresponding with the location resistance.
Described gear spray orifice is provided with four.
Described rotor is provided with the gearshift knob.
The described rotor outside also is provided with baffle plate, and baffle plate is provided with the exhaust opening that coincides with pod apertures.
Be provided with screen pack in the described air inlet pipe.
Described exhaust opening also is provided with screen pack.
The resistance of described location is made up of spring and gear pearl.
The beneficial effects of the utility model are: the measurement mechanism compact conformation, and easy and simple to handle.What measure is the instantaneous delivery of measuring at that time.Adopt the multidigit shift valve, can pass through rotor, make the gear spray orifice of different sizes corresponding with pod apertures, the adjustments of gas discharge, thus change the interior pressure of closed chamber.According to the pressure in selected gear and the closed chamber, utilize manometric force value of reading, convert flow reading to through check table, can draw the gas initial velocity of gushing out.Because it is adjustable to measure gear, thereby makes it have bigger measurement category, and has improved certainty of measurement.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model rotor.
Fig. 3 is the structural representation of stator in the utility model.
Mark among the figure: 1, rotor, 2, stator, 3, closed chamber, 4, the gearshift knob, 5, air inlet pipe, 6, the table interface, 7, exhaust opening, 8, pod apertures, 9, the gear spray orifice, 10, locating slot, 11, the location resistance, 12, housing, 13, baffle plate, 14, pressure meter.
The specific embodiment
As shown in the figure, a kind of boring gas initial velocity determinator of gushing out is made up of closed chamber 3, multidigit shift valve and pressure meter 14.The multidigit shift valve is made up of the rotor 1 and the stator 2 of overlapping setting.Closed chamber 3 is made of housing 12 and stators 2 sealings that are arranged in the housing 12, and the multidigit shift valve is arranged on an end of closed chamber 3.Housing 12 and stator 2 can be structure as a whole, and do as a wholely, and portion is provided with closed chamber within it.Closed chamber 3 is provided with air inlet pipe 5 and table interface 6, and air inlet pipe 5 connects the boring gas export, and table interface 6 is connected with pressure meter 14.Be provided with pod apertures 8 on stator 2, be provided with two corresponding with pod apertures 8 and differ in size gear spray orifices 9 at least on rotor 1, the rotor 1 shown in Fig. 2 is provided with four gear spray orifices 9.On rotor 1, also be provided with the locating slot 10 identical, on stator 2, be provided with and locating slot 10 positions corresponding location resistance 11 with gear spray orifice 9 quantity.Described location resistance 11 can be made up of spring and gear pearl, makes it have certain elasticity, can compress and eject.Described rotor 1 outside also is provided with baffle plate 13, and baffle plate 13 is fixedlyed connected with housing 12, can play the effect of protection rotor 1.On baffle plate 13, be provided with the exhaust opening 7 that coincides with pod apertures 8.Be respectively equipped with screen pack in exhaust opening 7 and the air inlet pipe 5, can prevent that dust from entering measurement mechanism, avoid influencing certainty of measurement.
The gas of boring enters closed chamber 3 and pressure meter 14 by air inlet pipe, and flows out by pod apertures 8 and gear spray orifice 9.Because the throttling action of pod apertures 8 and gear spray orifice 9, the gas pressure in the closed chamber 3 raises, and pressure meter 14 produces reading.By gearshift knob 4 rotary rotors 1 that are provided with on the rotor 1, the gear spray orifice 9 of different sizes is overlapped with pod apertures 8, can adjust the discharge of methane gas, change throttling action, adjust the pressure in the closed chamber 3.Locate resistance 11 and different locating slot 10 coincidences, can determine the position of gear spray orifice 9, guarantee that the gear spray orifices 9 of different sizes just in time overlap with pod apertures 8.The force value of measuring in advance according to the reading inquiry of selected gear and pressure meter 14 and the contrast table of flow can draw the gas initial velocity of gushing out.This mensuration mode is very directly perceived, simple.The result who is drawn is the instantaneous velocity of measuring at that time, the certainty of measurement height.Because it is adjustable to measure gear, thereby makes it that bigger measurement category be arranged, its measurement category is 0.5-30L/min.
Claims (7)
1. boring gas initial velocity determinator of gushing out, it is characterized in that: by closed chamber (3), multidigit shift valve and pressure meter (14) are formed, closed chamber (3) is provided with air inlet pipe (5) and table interface (6), table interface (6) is connected with pressure meter (14), the multidigit shift valve is arranged on an end of closed chamber (3), rotor (1) and stator (2) by overlapping setting are formed, on stator (2), be provided with pod apertures (8) and location resistance (11), on rotor (1), be provided with two corresponding with pod apertures (8) and differ in size gear spray orifices (9) at least, also be provided with the locating slot (10) identical with gear spray orifice (9) quantity on rotor (1), the position of locating slot (10) is corresponding with location resistance (11).
2. a kind of boring gas as claimed in claim 1 initial velocity determinator of gushing out, it is characterized in that: described gear spray orifice (9) is provided with four.
3. a kind of boring gas as claimed in claim 1 initial velocity determinator of gushing out is characterized in that: described rotor (1) is provided with gearshift knob (4).
4. a kind of boring gas as claimed in claim 1 initial velocity determinator of gushing out is characterized in that: described rotor (1) outside also is provided with baffle plate (13), and baffle plate (13) is provided with the exhaust opening (7) that coincides with pod apertures (8).
5. a kind of boring gas as claimed in claim 1 initial velocity determinator of gushing out, it is characterized in that: described air inlet pipe is provided with screen pack in (5).
6. a kind of boring gas as claimed in claim 4 initial velocity determinator of gushing out, it is characterized in that: described exhaust opening (7) also is provided with screen pack.
7. a kind of boring gas as claimed in claim 1 initial velocity determinator of gushing out is characterized in that: described location resistance (11) is made up of spring and gear pearl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202117750U CN201687464U (en) | 2010-06-02 | 2010-06-02 | Drilling gas inrush initial velocity measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202117750U CN201687464U (en) | 2010-06-02 | 2010-06-02 | Drilling gas inrush initial velocity measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687464U true CN201687464U (en) | 2010-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202117750U Expired - Fee Related CN201687464U (en) | 2010-06-02 | 2010-06-02 | Drilling gas inrush initial velocity measurement device |
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| CN (1) | CN201687464U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832157A (en) * | 2015-05-25 | 2015-08-12 | 开滦(集团)有限责任公司技术中心 | Outburst prediction and forecast device based on coal bed drilled hole gas parameter detection |
| CN105735967A (en) * | 2016-04-12 | 2016-07-06 | 中国矿业大学 | Method for measuring initial emission velocity of gas from drill hole |
| CN106285626A (en) * | 2016-08-16 | 2017-01-04 | 中煤科工集团重庆研究院有限公司 | Gas emission initial velocity measuring device |
-
2010
- 2010-06-02 CN CN2010202117750U patent/CN201687464U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832157A (en) * | 2015-05-25 | 2015-08-12 | 开滦(集团)有限责任公司技术中心 | Outburst prediction and forecast device based on coal bed drilled hole gas parameter detection |
| CN105735967A (en) * | 2016-04-12 | 2016-07-06 | 中国矿业大学 | Method for measuring initial emission velocity of gas from drill hole |
| CN105735967B (en) * | 2016-04-12 | 2018-09-21 | 中国矿业大学 | Method for measuring initial velocity of gas emission in drill hole |
| CN106285626A (en) * | 2016-08-16 | 2017-01-04 | 中煤科工集团重庆研究院有限公司 | Gas emission initial velocity measuring device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20170602 |