CN204152531U - A kind of fully-mechanized mining working pair enters double back annular liquid feeding pipeline - Google Patents
A kind of fully-mechanized mining working pair enters double back annular liquid feeding pipeline Download PDFInfo
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- CN204152531U CN204152531U CN201420619066.4U CN201420619066U CN204152531U CN 204152531 U CN204152531 U CN 204152531U CN 201420619066 U CN201420619066 U CN 201420619066U CN 204152531 U CN204152531 U CN 204152531U
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Abstract
The utility model relates to a kind of fully-mechanized mining working pair and enters double back annular liquid feeding pipeline, comprise main feed tube and main liquid back pipe, the feed tube of work plane all hydraulic support is connected with main feed tube and main liquid back pipe respectively with liquid back pipe, main feed tube is connected with main feed tube nose end returning after last hydraulic support, and main liquid back pipe is connected with main liquid back pipe nose end returning after last hydraulic support.The utility model adopts annular feed liquid way, and main feed tube and main liquid back pipe respectively head and the tail are connected, and forms work plane head and the tail two and packs into liquid back pipe road, improve liquid feeding pipeline pressure, can meet the feed flow requirement of growth in length.
Description
Technical field
The utility model relates to a kind of liquid feeding pipeline of mine hydraulic bracket, particularly the liquid feeding pipeline of growth in length hydraulic support.
Background technology
Hydraulic support is as the support apparatus of fully-mechanized mining working, the quality of its performance determines the efficiency of coal mining, the increasing of coal mine fully-mechanized mining working length, single face output can not only be improved, facilitate roadway layout, simplify production system, be conducive to mine height centralized production, and mine resource recovery ratio can be improved, and be conducive to the protection of surface buildings, but a series of problem can be brought while enhancing productivity like this, such as emulsion power pack pressure and flow are inadequate, thus cause moving in frame process the quick movement that cannot realize multi rack support, even because pressure occurs moving motionless phenomenon not sometimes.
Such as, Changping Company of Jin Mei group 180m fully-mechanized mining working adopts the mode singly entering single time (Fig. 1) to hydraulic support feed flow, can meet work plane industrial requirements.After face length is increased to 226.3m, by calculating, under Dan Jindan returns feed liquid way, the pressure loss at last place is maximum, singly enters for 5.32MPa, 226.3m work plane uses the working condition requirement that single time feed liquid way has not met support.
Summary of the invention
It is little that the technical problems to be solved in the utility model is to provide the loss of a kind of liquid supply pressure, and the fully-mechanized mining working pair that can meet the requirement of growth in length feed flow enters double back annular liquid feeding pipeline.
For solving above technical problem, the utility model improves on the basis of existing technology.The utility model fully-mechanized mining working pair enters double back annular liquid feeding pipeline, comprise main feed tube and main liquid back pipe, the feed tube of work plane all hydraulic support is connected with main feed tube and main liquid back pipe respectively with liquid back pipe, main feed tube is connected with main feed tube nose end returning after last hydraulic support, and main liquid back pipe is connected with main liquid back pipe nose end returning after last hydraulic support.
The utility model adopts annular feed liquid way, and main feed tube and main liquid back pipe respectively head and the tail are connected, and forms work plane head and the tail two and packs into liquid back pipe road, improve liquid feeding pipeline pressure, can meet the feed flow requirement of growth in length.
Accompanying drawing explanation
Fig. 1 be prior art adopt singly enter single time liquid feeding pipeline.
Fig. 2 be the utility model adopt two enter double back annular liquid feeding pipeline.
In figure, the main feed tube of 1-, the main liquid back pipe of 2-, 3-1 support, 4-2 support, 5-n-2 support, 6-n-1 support, 7-n support.
Detailed description of the invention
In order to make those skilled in the art better understand the utility model, below in conjunction with accompanying drawing, explanation clear, complete is further done to the utility model.
Fully-mechanized mining working shown in Fig. 2 pair enters double back annular liquid feeding pipeline, comprise main feed tube 1 and main liquid back pipe 2, the feed tube of work plane all hydraulic support is connected with main feed tube 1 and main liquid back pipe 2 respectively with liquid back pipe, it is characterized in that: main feed tube 1 is connected with main feed tube 1 nose end returning after last hydraulic support, main liquid back pipe 2 is connected with main liquid back pipe 2 nose end returning after last hydraulic support.
The pressure loss of hydraulic support liquid feeding pipeline forms by along stroke pressure loss and local pressure loss, and local pressure loss is made up of the free flow coupling pressure loss and the tee pipe coupling pressure loss.
For Changping Company of Jin Mei group 226.3m fully-mechanized mining working, hydraulic support is by No. 1 support 3, No. 2 supports 4 ..., n-2 support 5, n-1 support 6 and n support 7 form.Support-moving mode is unit price sequential successively.Pumping plant flow 400 L/min, rated pressure is 31.5MPa, crossheading feed liquor caliber
63mm, liquid feeding pipeline length 250 m in crossheading; Feed liquor caliber between work plane frame
50mm, center to center distance 1.75m between frame, work face length 226.3m, has 130 frame supports, pipe pipe range 3m between frame.
If singly enter single time liquid feeding pipeline shown in employing Fig. 1.As calculated
, then the pressure loss table singly entering single time feed liquid way is:
From calculating, under singly entering single time feed liquid way, the pressure loss at last place is maximum, singly enters for 5.32MPa, 226.3m work plane uses the working condition requirement that single time feed liquid way has not met support.
If shown in employing Fig. 2 two enter double back annular liquid feeding pipeline, emulsion enters hydraulic support through two pipelines, and the flow of two pipelines is all
.Emulsion arrives the
the pressure loss of frame support is
,
mPa, can show that the loss of annular liquid supply pressure is all 0.16
, the working condition requirement of support can be met.
The claimed scope of the utility model is not limited to above detailed description of the invention; to those skilled in the art; the utility model can have various deformation and change, all in design of the present utility model and any amendment, the improvement done within principle be equal to replacement and all should be included within protection domain of the present utility model.
Claims (1)
1. a fully-mechanized mining working pair enters double back annular liquid feeding pipeline, comprise main feed tube (1) and main liquid back pipe (2), the feed tube of work plane all hydraulic support is connected with main feed tube (1) and main liquid back pipe (2) respectively with liquid back pipe, it is characterized in that: main feed tube (1) is connected with main feed tube (1) nose end returning after last hydraulic support, main liquid back pipe (2) is connected with main liquid back pipe (2) nose end returning after last hydraulic support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619066.4U CN204152531U (en) | 2014-10-24 | 2014-10-24 | A kind of fully-mechanized mining working pair enters double back annular liquid feeding pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420619066.4U CN204152531U (en) | 2014-10-24 | 2014-10-24 | A kind of fully-mechanized mining working pair enters double back annular liquid feeding pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204152531U true CN204152531U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420619066.4U Active CN204152531U (en) | 2014-10-24 | 2014-10-24 | A kind of fully-mechanized mining working pair enters double back annular liquid feeding pipeline |
Country Status (1)
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| CN (1) | CN204152531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640166A (en) * | 2016-12-20 | 2017-05-10 | 中国神华能源股份有限公司 | Liquid discharging recovery device and hydraulic system for hydraulic support |
| CN108487925A (en) * | 2018-05-07 | 2018-09-04 | 郑州煤矿机械集团股份有限公司 | Fully-mechanized mining working with fault diagnosis functions is for return liquid system |
-
2014
- 2014-10-24 CN CN201420619066.4U patent/CN204152531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640166A (en) * | 2016-12-20 | 2017-05-10 | 中国神华能源股份有限公司 | Liquid discharging recovery device and hydraulic system for hydraulic support |
| CN106640166B (en) * | 2016-12-20 | 2019-09-10 | 中国神华能源股份有限公司 | Drainage recyclable device and hydraulic system for hydraulic support |
| CN108487925A (en) * | 2018-05-07 | 2018-09-04 | 郑州煤矿机械集团股份有限公司 | Fully-mechanized mining working with fault diagnosis functions is for return liquid system |
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