CN202483612U - Polyvinyl chloride gas-drainage pipe for underground coal mine - Google Patents
Polyvinyl chloride gas-drainage pipe for underground coal mine Download PDFInfo
- Publication number
- CN202483612U CN202483612U CN201220091262XU CN201220091262U CN202483612U CN 202483612 U CN202483612 U CN 202483612U CN 201220091262X U CN201220091262X U CN 201220091262XU CN 201220091262 U CN201220091262 U CN 201220091262U CN 202483612 U CN202483612 U CN 202483612U
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- Prior art keywords
- polyvinyl chloride
- drainage pipe
- chloride gas
- coal mine
- sample
- 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.)
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Abstract
The utility model relates to a polyvinyl chloride gas-drainage pipe for underground coal mine. The polyvinyl chloride gas-drainage pipe comprises a polyvinyl chloride pipe body. Gas collecting holes are reserved on the wall of the polyvinyl chloride pipe body. A plug is disposed at one end of the polyvinyl chloride pipe body. The polyvinyl chloride gas-drainage pipe has excellent physical properties, and is simple to mount, convenient to use, and applicable to the technical field of pipeline transportation.
Description
Technical field
The utility model belongs to the pipe transportation technology field, relates to being specifically designed to the tubing that draws out methane under a kind of coal mine, especially relates to a kind of underground mine use polyvinyl chloride pipe that draws out methane.
Background technology
At present; Be specifically designed to the tubing that draws out methane on the market under the coal mine and need bear very big negative pressure, the tubing that existing special use draws out methane generally is to roll with steel plate to form, and the raw material that consume like this are more; The also corresponding raising of cost thereupon, and increased transportation, mounting hardness.
In the prior art; During with the outside extraction of gas under the coal mine, polyvinyl chloride pipe is widely used owing to its good antistatic, stretch-proof and fire resistance, but because it is withstand voltage, impact resistance intensity and pliability are relatively poor; When the length distances; Be prone to make pipeline to produce dead folding or fracture, cause conveying circuit to interrupt, form accident potential.
The utility model content
The purpose of the utility model is to the defective that exists in the prior art, and a kind of underground mine use polyvinyl chloride pipe that draws out methane is provided.
The technical scheme of the utility model is following:
A kind of underground mine use polyvinyl chloride pipe that draws out methane comprises the polyvinyl chloride body, on the tube wall of said body, is provided with gas collection hole, is provided with plug at an end of body.
Further preferred, said plug is conical.
The utility model is its beneficial effect compared with prior art:
(1) installation is simple, easy to connect: after the pipe-expanding machine enlarging, can couple together easily.In order to guarantee sealing, can carry out bonding with glue.
(2) wear-resistant, corrosion-resistant: inner wall smooth, friction factor is little, can the dielectric corrosion of anti-the number of chemical, be particularly suitable under coal mine, using in the moisture laden air.
(3) bigger feed flow: tube wall is level and smooth, can improve velocity of medium, and augmented flow is compared with identical metallic conduit, can carry more flow, saves power consumption.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is done explanation in further detail.
Fig. 1 is the utility model structural representation.
The specific embodiment
With reference to Fig. 1, a kind of underground mine use polyvinyl chloride pipe that draws out methane comprises the polyvinyl chloride body, on the tube wall of said body 1, is provided with gas collection hole 2, lets in the coal seam gas such as gas get in the pipe that draws out methane, and is provided with plug 3 at an end of body.Said plug 3 is conical.Conical plug is convenient to the pipe that draws out methane is inserted in the extraction hole in the coal seam, prevents simultaneously that enterings such as cinder from drawing out methane to manage.
The utility model product underground mine use polyvinyl chloride draw out methane the pipe technical characteristic following:
(1) anti-malleation: under 2 times of nominal pressures, pressurize 1h, leakproof and destruction.
Method by GB/T 15560 regulations is carried out.Test pressure is 2 times of nominal pressure, and sample quantities is three.
(2) anti-negative pressure: under the 0.097MPa negative pressure, pressurize 100h does not have and inhales flat and destruction.
Testing equipment: vacuum pump, final vacuum reaches 1.33 * 10
-2Pa; Vacuum meter, measurement category-0.1MPa～0MPa, certainty of measurement ± 0.001MPa.
Specimen preparation: specimen length is 5 times a tubing nominal diameter, is 1000mm perhaps, gets them among both than the elder, and sample quantities is three.
Test procedure: 1. remove oil stain or other pollutants of specimen surface, make its clean dry, at environment temperature (23 ± 2) ℃ condition held 24h; 2. select suitable seal nipple that tubing is sealed, and seal sample is linked to each other with pressure experimental device; 3. seal sample is applied negative pressure to (0.097 ± 0.001) MPa, pressurize 100h, environment temperature remains on (20 ± 2) ℃ in the pressure maintaining period.
(3) tensile strength: the tensile strength of tubing is not less than 9.0MPa.
Testing equipment: tensile testing machine, range are 20kN, and the degree of accuracy is 1%, has automatic recording function; Slide measure, the degree of accuracy are 0.02mm.
Specimen preparation: the regulation according to 5.2.2.2 among the GB/T8804.1-2003 and 5.2.2.3 is carried out specimen preparation.Before the test, the environment that sample is placed (23 ± 2) ℃ is 4h at least.
Test procedure: measure the width and the thickness of sample, be accurate to 0.01mm; Sample is placed on the testing machine, the sample longitudinal axis and last lower clamp center line are coincided, and want degree of tightness suitable, try to shirk responsibility to prevent sample; Draw speed is (5 ± 0.5) mm/min.
(4) ring stiffness: the ring stiffness of tubing is not less than 16kN/m
2
Method by GB/T 9647 regulations is carried out.
(5) drop impact: tubing behind drop impact, flawless and destruction.
Testing equipment: mainframe and guide rail, mainframe and guide rail vertical fixing can regulate vertically, freely discharge and drop hammer; When tubing nominal outside diameter during less than 160mm, test hammer body quality be (2 ± 0.02) kg, and when tubing nominal outside diameter during more than or equal to 160mm, testing the hammer body quality is (3 ± 0.03) kg.The height that hammer is risen to 2m freely falls.
Specimen preparation: intercepted length is ten on the sample of (200 ± 10) mm, sample both ends of the surface and axis normal, both ends of the surface cleaning, not damaged.
Test procedure: sample should carry out status adjustment in the water of (23 ± 2) ℃ or air.After the status adjustment,, should from air bath, take out 10s or from water-bath, take out completion test in the 20s for the sample of wall thickness smaller or equal to 8.6mm; Wall thickness should take out 20s or from water-bath, take out completion test in the 30s greater than the sample of 8.6mm from air bath.One by one sample is impacted, each sample only bears one-shot.
(6) antistatic property: the arithmetic mean of instantaneous value of the inside and outside wall surface resistance of tubing is not more than 1.0 * 10
6Ω.
Testing equipment: sheet resistance tester, range 10
3Ω～10
10Ω.
Test conditions: temperature is (25 ± 5) ℃, and relative humidity is (65 ± 5) %.
Test procedure: two electrodes closely attached to the outer wall surface of test specimen, and are spreaded all over one week of tubing, between two electrodes at a distance of 1000mm.Test tubing inner wall surface resistance, then with two electrodes closely attached to the test specimen inner wall surface, and spread all over one week of inwall, between two electrodes at a distance of 1000mm.Two electrodes are inserted the high resistant appearance with lead-in wire respectively, apply test voltage 1min after, read the resistance measurement value.Each does the inside and outside surface of every test specimen once.
(7) fire resistance: the arithmetic mean of instantaneous value of the flaming combustion time of 6 samples is not more than 3s, and the flaming combustion time of wherein any 1 sample is not more than 10s; The arithmetic mean of instantaneous value of the flameless combustion time of 6 samples is not more than 20s, and the flameless combustion time of wherein any 1 sample is not more than 60s.
Testing equipment: alcohol blast burner corrosion chamber, fuel are Capacity Ratio 95% industrial alcohol and 5% methanol mixture; Has scale and is the 0.01s or the stopwatch of down scale more.
Specimen preparation: test uses test specimen longly to be 600mm at one, and diameter is not less than intercepting on the representative tubing of 50mm; Test specimen is wide to be the circular of 25mm, and two end faces of ring should be perpendicular with the longitudinal axis of the tubing of testing usefulness; Test specimen quantity is six; Diameter can be cut into circular-arc test specimen greater than the tubing of 300mm and make an experiment.
Test procedure: test specimen is placed on the flame of alcohol blast burner burner, behind the burning 30s, remove the alcohol blast burner burner, measure flame or Mars burning time of test specimen.
The above; Be merely the preferable specific embodiment of the utility model; The protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the simple change of the technical scheme that obtains or equivalence replacement all fall in the protection domain of the utility model with may be obvious that.
Claims (2)
1. underground mine use polyvinyl chloride pipe that draws out methane comprises the polyvinyl chloride body, it is characterized in that, on the tube wall of said body, is provided with gas collection hole, is provided with plug at an end of body.
2. the underground mine use polyvinyl chloride according to claim 1 pipe that draws out methane is characterized in that, said plug is conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220091262XU CN202483612U (en) | 2012-03-13 | 2012-03-13 | Polyvinyl chloride gas-drainage pipe for underground coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220091262XU CN202483612U (en) | 2012-03-13 | 2012-03-13 | Polyvinyl chloride gas-drainage pipe for underground coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202483612U true CN202483612U (en) | 2012-10-10 |
Family
ID=46958039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220091262XU Expired - Fee Related CN202483612U (en) | 2012-03-13 | 2012-03-13 | Polyvinyl chloride gas-drainage pipe for underground coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202483612U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939128A (en) * | 2014-04-10 | 2014-07-23 | 河南理工大学 | Gas extraction tube drilling feeding method |
| CN103982219A (en) * | 2014-05-16 | 2014-08-13 | 中国矿业大学(北京) | Soft coal gas drainage anti-sloughing hole device and method |
| CN110196315A (en) * | 2019-05-30 | 2019-09-03 | 余明高 | A kind of gas solid extraction and Study on Protection of Spontaneous Combustion coupling test system |
-
2012
- 2012-03-13 CN CN201220091262XU patent/CN202483612U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939128A (en) * | 2014-04-10 | 2014-07-23 | 河南理工大学 | Gas extraction tube drilling feeding method |
| CN103939128B (en) * | 2014-04-10 | 2016-03-16 | 河南理工大学 | Gas pumping pipe bit delivery method |
| CN103982219A (en) * | 2014-05-16 | 2014-08-13 | 中国矿业大学(北京) | Soft coal gas drainage anti-sloughing hole device and method |
| CN110196315A (en) * | 2019-05-30 | 2019-09-03 | 余明高 | A kind of gas solid extraction and Study on Protection of Spontaneous Combustion coupling test system |
| CN110196315B (en) * | 2019-05-30 | 2021-08-17 | 余明高 | Gas three-dimensional extraction and goaf natural ignition coupling test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HENAN TIANCHENG ENVIRONMENTAL PROTECTION TECHNOLOG Free format text: FORMER OWNER: TIANCHENG INDUSTRIAL BRANCH OF CHINA PINGMEI SHENMA ENERGY CHEMICAL GROUP CO., LTD. Effective date: 20150807 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150807 Address after: Pingdingshan City, Henan Province, Xinhua District 467000 Ping An Avenue and Pui Ying Street 100 meters north of the intersection of East Patentee after: HENAN TIANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: Pingdingshan City Zhanhe District Xiyuan road 467000 Henan province No. 16 Patentee before: The China Ping Meishenma derived energy chemical Tian Cheng of Co., Ltd of group industry branch company |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20210313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |