CN201884050U - Flow rate gap bridge device for gas drainage pipeline - Google Patents
Flow rate gap bridge device for gas drainage pipeline Download PDFInfo
- Publication number
- CN201884050U CN201884050U CN2010206504644U CN201020650464U CN201884050U CN 201884050 U CN201884050 U CN 201884050U CN 2010206504644 U CN2010206504644 U CN 2010206504644U CN 201020650464 U CN201020650464 U CN 201020650464U CN 201884050 U CN201884050 U CN 201884050U
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- CN
- China
- Prior art keywords
- gas drainage
- gap bridge
- gas
- orifice flowmeter
- under suction
- 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.)
- Expired - Lifetime
Links
- 238000000605 extraction Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000003245 coal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model relates to a flow rate gap bridge device for a gas drainage pipeline. The flow rate gap bridge device comprises a gas pipeline main pipe and a gas drainage branch pipe which are connected with each other through a main pipe three-way pipe, an orifice flowmeter is arranged at the part of the gas drainage branch pipe near the main pipe three-way pipe, and a flow rate gap bridge connected in parallel with the orifice flowmeter is also arranged below the orifice flowmeter. Through the use of the gap bridge device connected in parallel with the orifice flowmeter of the gas drainage branch pipe, the flow rate gap bridge device for the gas drainage pipeline effectively reduces the local resistance of the gas drainage pipeline. An automatic water drainage device arranged on the gap bridge device can prevent water from being accumulated in the gas pipeline, so as to improve gas drainage. Furthermore, the flow rate gap bridge device can eliminate potential gas risks caused by manual efforts to stop a pump and discharge water.
Description
Technical field
The utility model relates to a kind of pipeline orifice flowmeter bindiny mechanism that draws out methane, and particularly relates to a kind of gas drainage under suction piping flow Overbridge device.
Background technology
According to the policy of gas control, must carry out " take out afterwards earlier and adopt ".Along with the coal production up-to-dateness improves, the working surface production ability has also obtained large increase, and low gaseous mine originally becomes highly gassy mine.But the gas problem but is the principal element of puzzlement Safety of Coal Mine Production always.
Drawing out methane is the essential measure of administering mine gas, in order accurately to measure the gas amount of extraction, generally all is to install the measurement flow apparatus on the pipeline that draws out methane.What use was maximum at present is orifice flowmeter, and orifice flowmeter is connected on the gas pipeline, utilizes measuring diaphragm both sides pressure reduction calculated flow rate.
In taking out the coal-bed gas process in advance, generally be to arrange boring along the seam inclination direction in work plane glue fortune lane, install for not influencing glue fortune lane belt, the main line that draws out methane is generally all installed by the top by group, several borings are linked to be one group, be connected with the extraction main line by arm, on each bye-pass, install orifice flowmeter, measure the gas drainage under suction amount of zones of different, different borings.
But there is following technological deficiency in prior art:
1, orifice plate is actually on a circular slab and is provided with an aperture, and local resistance is big, and particularly the less orifice plate local resistance in aperture is bigger, increases the negative pressure of gas pump, influences the extraction effect.
2, for the pre-gas pumping in coal seam, water is often arranged in the pipeline, water can produce impact by orifice plate the time, cause orifice plate both sides pressure reduction instability and error bigger, can not accurately reflect the gas bearing capacity of actual extraction.
3, too much directly influence the extraction effect when pipeline ponding,, also want per tour manually to discharge water, under the effect of gas pump negative pressure, manually be difficult to emit water again, must termination of pumping discharge water if the water yield is bigger in the coal seam.And the shortcoming of termination of pumping, the one, influence the extraction time, the 2nd, when manually discharging water, the high concentration gas in the boring can be discharged in the tunnel, have bigger potential safety hazard.
The utility model content
The purpose of this utility model is, overcome the defective of above-mentioned prior art and provide a kind of simple in structure, can reduce the local resistance of gas drainage under suction pipeline effectively, solve the gas drainage under suction piping flow Overbridge device of gas pipeline ponding problem.
For achieving the above object, the utility model is taked following design scheme:
A kind of gas drainage under suction piping flow Overbridge device of the present utility model, comprise by being responsible for the gas pipeline person in charge and the gas drainage under suction arm that tee piece is connected, be provided with orifice flowmeter near described person in charge's tee piece place on the described gas drainage under suction arm, below described orifice flowmeter, also be provided with the flow in parallel and pass a bridge with this orifice flowmeter.
Preferably, described flow is passed a bridge and is positioned at the minimum point of extraction arm pipeline.
Preferably, described flow is passed a bridge and is provided with by-pass valve control.
Preferably, described flow also is provided with automatic tailrace on passing a bridge.
Preferably, described flow is passed a bridge parallel with one another by two arm three way cock and described orifice flowmeter.
Preferably, between described orifice flowmeter and person in charge's tee piece, also be provided with valve.
The utility model has the advantages that: since the utility model in the orifice flowmeter place parallel connection of gas drainage under suction arm Overbridge device, therefore, make the utility model reduce the local resistance of gas drainage under suction pipeline effectively; And can solve gas pipeline ponding problem by the automatic tailrace that is arranged on the Overbridge device, improve the gas drainage under suction effect; Further, the utility model can also be eliminated the gas hidden danger that artificial termination of pumping waterproof causes.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Referring to Fig. 1, the preferred embodiment of a kind of gas drainage under suction piping flow of the utility model shown in it Overbridge device, comprise by being responsible for the gas pipeline person in charge 1 and the gas drainage under suction arm 3 that tee piece 2 is connected, be provided with orifice flowmeter 4 near described person in charge's tee piece 2 places on the described gas drainage under suction arm 3, below described orifice flowmeter 4, also be provided with the flow in parallel and pass a bridge 5 with this orifice flowmeter 4.Preferably, described flow gap bridge 5 is positioned at the minimum point of extraction arm 3 pipelines, and is provided with by-pass valve control 6 on described flow gap bridge 5, further preferably, also is provided with automatic tailrace 7 on the described flow gap bridge 5.
Preferably, described flow gap bridge 5 is parallel with one another by two arm three way cock 8 and described orifice flowmeter 4, and, between described orifice flowmeter 4 and person in charge's tee piece 2, also be provided with valve 9.
Particularly, operating principle of the present utility model is:
The orifice flowmeter 4 of gas drainage under suction arm 3 is arranged near near person in charge's tee piece 2, as shown in Figure 1, be arranged in parallel flow gap bridge 5 in orifice flowmeter 4 both sides and orifice flowmeter 4, and, preferably, make flow gap bridge 5 be in the minimum point of gas drainage under suction arm 3 pipelines; Further, on flow gap bridge 5, install a by-pass valve control 6 and an automatic tailrace 7.
When measuring the flow of extraction arm 3, close the by-pass valve control 6 of flow gap bridge 5 earlier, the gas that makes extraction arm 3 is all by orifice flowmeter 4.
When measure finishing, open pass a bridge 5 by-pass valve control 6 of flow, flow pass a bridge 5 with extraction bye-pass 3 on orifice flowmeter 4 two ends together with, just reduced the local resistance of extraction arm 3 pipeline up-hole plate flow meters 4 thus.Because flow gap bridge 5 is in the extreme lower position of extraction arm 3 pipelines, so, if there is ponding in the pipeline, it also can remain in the pipeline of flow gap bridge 5, and further can emit automatically by the automatic tailrace 7 that the utility model is arranged on the flow gap bridge 5.
On the other hand, this utility model can use in the installation process of automatic tailrace 7 separately, also can use separately when orifice flowmeter 4 is installed simultaneously.
Obviously, those of ordinary skill in the art can constitute various types of piping flow Overbridge devices with a kind of gas drainage under suction piping flow Overbridge device of the present utility model.
The foregoing description is only for the usefulness that the utility model is described; and be not to be to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the utility model scope; can also make various variations and modification; therefore all technical schemes that are equal to also should belong to category of the present utility model, and scope of patent protection of the present utility model should be limited by each claim.
Claims (6)
1. gas drainage under suction piping flow Overbridge device, it is characterized in that: comprise by being responsible for the gas pipeline person in charge (1) and the gas drainage under suction arm (3) that tee piece (2) is connected, described gas drainage under suction arm (3) is gone up near described person in charge's tee piece (2) and is located to be provided with orifice flowmeter (4), also is provided with the flow gap bridge (5) in parallel with this orifice flowmeter (4) in the below of described orifice flowmeter (4).
2. gas drainage under suction piping flow Overbridge device according to claim 1 is characterized in that: described flow gap bridge (5) is positioned at the minimum point of extraction arm (3) pipeline.
3. gas drainage under suction piping flow Overbridge device according to claim 1 and 2 is characterized in that: described flow gap bridge (5) is provided with by-pass valve control (6).
4. gas drainage under suction piping flow Overbridge device according to claim 3 is characterized in that: also be provided with automatic tailrace (7) on the described flow gap bridge (5).
5. gas drainage under suction piping flow Overbridge device according to claim 4 is characterized in that: described flow gap bridge (5) is parallel with one another by two arm three way cock (8) and described orifice flowmeter (4).
6. gas drainage under suction piping flow Overbridge device according to claim 1 is characterized in that: also be provided with valve (9) between described orifice flowmeter (4) and person in charge's tee piece (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206504644U CN201884050U (en) | 2010-12-03 | 2010-12-03 | Flow rate gap bridge device for gas drainage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206504644U CN201884050U (en) | 2010-12-03 | 2010-12-03 | Flow rate gap bridge device for gas drainage pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884050U true CN201884050U (en) | 2011-06-29 |
Family
ID=44181590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206504644U Expired - Lifetime CN201884050U (en) | 2010-12-03 | 2010-12-03 | Flow rate gap bridge device for gas drainage pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119979A (en) * | 2019-12-08 | 2020-05-08 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
| CN113266415A (en) * | 2021-06-16 | 2021-08-17 | 陕西长武亭南煤业有限责任公司 | Gas extraction equipment and method with alternative pumping and pressing |
-
2010
- 2010-12-03 CN CN2010206504644U patent/CN201884050U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119979A (en) * | 2019-12-08 | 2020-05-08 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
| CN111119979B (en) * | 2019-12-08 | 2021-12-03 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
| CN113266415A (en) * | 2021-06-16 | 2021-08-17 | 陕西长武亭南煤业有限责任公司 | Gas extraction equipment and method with alternative pumping and pressing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |