CN201535399U - Polyvinyl chloride hose for discharging gas under coal mine - Google Patents
Polyvinyl chloride hose for discharging gas under coal mine Download PDFInfo
- Publication number
- CN201535399U CN201535399U CN2009202223899U CN200920222389U CN201535399U CN 201535399 U CN201535399 U CN 201535399U CN 2009202223899 U CN2009202223899 U CN 2009202223899U CN 200920222389 U CN200920222389 U CN 200920222389U CN 201535399 U CN201535399 U CN 201535399U
- Authority
- CN
- China
- Prior art keywords
- pvc
- flexible pipe
- coal mine
- hose
- polyvinyl chloride
- 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
- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 57
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 56
- 239000003245 coal Substances 0.000 title claims abstract description 16
- 238000007599 discharging Methods 0.000 title abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 22
- 229920012485 Plasticized Polyvinyl chloride Polymers 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 10
- 238000002485 combustion reaction Methods 0.000 abstract description 8
- 239000003063 flame retardant Substances 0.000 abstract description 6
- 239000002216 antistatic agent Substances 0.000 abstract description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract description 2
- 230000032683 aging Effects 0.000 abstract 1
- 230000000979 retarding effect Effects 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 description 15
- 239000004033 plastic Substances 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000007779 soft material Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 239000004744 fabric Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000005204 segregation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Abstract
The utility model discloses a polyvinyl chloride (PVC) hose for discharging gas under a coal mine, comprising soft PVC and a framework layer which is embedded in the soft PVC and formed by an unplasticized PVC hard bar. The PVC hose of the utility model does not separate under the actions of aging and temperature change by taking the unplasticized PVC hard bar as the framework layer, wherein the hard bar has the same material as that of the soft PVC, both of which have an excellent compatibility and small differences in creep deformation and coefficient of expansion and shrinkage; and in addition, an antistatic agent and a flame retardant are added in the soft PVC to enhance the antistatic property and the flame retarding property of the hose and meet the standards of combustion resisting and antistatic hose used under the coal mine.
Description
Technical field
The utility model relates to rubber and plastic flexible pipe technical field, particularly relates to drawing out methane under a kind of coal mine with PVC (Poly Vinyl Chloride, PVC) flexible pipe.
Background technique
Flexible pipe is meant the pipeline that has than the small-bend radius ability, with the requirement of satisfying the demand and conveniently installing and laying than the environmental conditions of small-bend radius.The flexible pipe of current application for satisfying the needs than small-bend radius, all adopts the quality softness, the lower material of Young's modulus just, as PE flexible pipe, PVC flexible pipe etc., the structure of the flexible pipe that this single soft material is made as shown in Figure 1, wherein 11 is soft material.The flexible pipe that this single soft material is made, its tensile strength and Young's modulus are lower, can't satisfy the service condition of bearing powerful interior pressure and external pressure.So just produced the enhancing flexible pipe, be exactly other high-strength material that in hose material, embeds different shape, increase the ability that tubing bears malleation, negative pressure, increase the ring stiffness of tubing.Enhancement layer in this embedding hose material is called framework layer, and framework layer is that the flexible pipe fabric, cord and/or the metal that are different from Lining Hose layer or overcoating strengthen component.In the existing flexible pipe of producing, its framework layer that strengthens usefulness also only has fabric, cord and/or metal really.Modal is exactly that steel wire twine to strengthen flexible pipe, a kind of steel wire twine strengthen flexible pipe structure as shown in Figure 2, wherein 21 is soft material, 22 is winding steel wire.
But, there be not the flame resistant that uses under the coal mine, the antistatic flexible pipe standard of being suitable in the standard of flexible pipe.There are the following problems for plastics of producing by prior art and current standard and rubber hose:
(1) do not possess satisfied " MT181-underground mine use plastic tube Safety performance inspection specification " desired flame resistant, anti-static electricity property, under coal mine, use to have huge potential safety hazard, used the flexible pipe that is not inconsistent above-mentioned Safety performance to connect the accident that draws out methane pipeline and cause gas ignition because of the generation static spark.
(2) no matter framework layer adopts fabric, cord or metallic material, for example winding steel wire, steel wire, or braided steel wire, all be and the inconsistent material of plastics, its creep coefficient is mutually far short of what is expected with plastics with coefficient of thermal expansion and contraction, under the timeliness effect and under the temperature variation effect, framework layer and plastic layer just produce segregation phenomenon, can't reconstruct synergy between the two, the intensity of tubing is declined to a great extent, the life-span reduces.
(3) for the flexible pipe that adopts the metal frame layer, after producing above-mentioned plastics and metal frame layer segregation phenomenon, fed sheet of a media or airborne oxygen and moisture content will be invaded by the gap between plastics and the metal, cause the corrosion of metal frame layer, lose its original function, shorten the life-span of tubing.
(4) for the flexible pipe that adopts fabric, cord etc. as framework layer, though its framework layer has advantages of higher tensile strength, Young's modulus is extremely low, therefore only the pipeline of pressing in bearing is had humidification, in the face of bearing external pressure or need be than the tubing of high ring rigidity, they are inoperative.
The model utility content
Problem to be solved in the utility model provides to draw out methane under a kind of coal mine uses the PVC flexible pipe, to overcome the defective of separating with plastic layer with temperature variation effect sending down the fishbone rack-layer in the prior art under the timeliness effect.
For achieving the above object, the technical solution of the utility model provides to draw out methane under a kind of coal mine uses PVC flexible pipe, described flexible pipe to comprise flexible PVC and the framework layer that is embedded in the described flexible PVC, and described framework layer is made of unplasticised PVC runner.
Preferably, separate by flexible PVC between the adjacent unplasticised PVC runner.
Preferably, in described flexible PVC, include carbon black, graphite or organic antistatic agents.
Preferably, in described flexible PVC, include organic fire-retardant or inorganic combustion inhibitor.
Compared with prior art, the technical solution of the utility model has following advantage:
Draw out methane under the coal mine of the present utility model and use the PVC flexible pipe, owing to adopt unplasticised PVC runner as framework layer, this runner and flexible PVC belong to material of the same race, the compatibility of the two is fabulous, creep and coefficient of thermal expansion and contraction differ minimum, therefore can not separate under the timeliness effect with under the temperature variation effect; In addition,, strengthened the antistatic and flame retardant property of flexible pipe, reached the flame resistant that uses under the coal mine, antistatic flexible pipe standard owing in flexible PVC, added anti-static agent and fire retardant.
Description of drawings
Fig. 1 is the structural drawing of the flexible pipe made of a kind of single soft material of prior art;
Fig. 2 is that a kind of steel wire of prior art twines the structural drawing that strengthens flexible pipe;
Fig. 3 is for drawing out methane under a kind of coal mine of the present utility model with the structural drawing of PVC flexible pipe.
Fig. 4 is for drawing out methane under a kind of coal mine of the present utility model with the cross section structure figure of PVC flexible pipe.
Wherein, 11 is soft material, and 21 is soft material, and 22 is winding steel wire, and 31 is outer flexible PVC, and 32 is unplasticised PVC runner, and 33 is the flexible PVC between adjacent runner.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
The structure of the usefulness that draws out methane under a kind of coal mine of the present utility model PVC flexible pipe as shown in Figures 3 and 4, described flexible pipe comprises flexible PVC and the framework layer that is embedded in the described flexible PVC, described framework layer is made of unplasticised PVC runner, is separated by flexible PVC between the adjacent unplasticised PVC runner.In described flexible PVC, include carbon black, graphite or organic antistatic agents, and organic fire-retardant or inorganic combustion inhibitor.
Present embodiment adopts unplasticised PVC runner as framework layer, the high tensile and the high elastic modulus of hard PVC have been made full use of, can and need the flexible pipe of high ring rigidity all to have tangible humidification to the flexible pipe that bears inside and outside pressure, reduce the wall thickness of flexible pipe, save material.Owing to adopt the framework layer of unplasticised PVC runner as flexible pipe, belong to material of the same race with soft material, the compatibility of the two is fabulous, and creep and coefficient of thermal expansion and contraction differ minimum, therefore can under the timeliness effect, not separate, solve the problem that other material framework layer separates with plastics.
The preparation process of PVC flexible pipe of the present utility model is as follows: according to the prescription of development, respectively with polyvinyl chloride resin, various auxiliary agents add in the batch mixer, obtain runner mixed ingredients and soft mixed ingredients.Mixed ingredients is added single screw rod granulating extruder, make runner pellet and soft pellet by granulating head.
The runner pellet is dropped into extruder, produce the PVC runner by mould, qualified runner enters the compound die head after revolving winding by torsion machine by designing shape.Simultaneously soft pellet is dropped into another single screw extrusion machine, extrude flexible PVC, soft material enters compound die head, is combined with each other with the PVC runner, becomes finished product behind cooling, the bundling that spirals.
The PVC flexible pipe of present embodiment has solved antistatic problem, and test result shows that the surface resistance of 1 meter long former traditional flexible pipe is 1.3 * 10
14～2.1 * 10
15Between, surface resistance of the present utility model is 2 * 10
5, reached MT-181 and required smaller or equal to 1.0 * 10
6The requirement of Ω.
The PVC flexible pipe of present embodiment has solved fire-retardant problem, and the alcohol blast burner combustion test shows that the flaming combustion time of former traditional flexible pipe, 6 sample summations were 30～52 seconds, and the flameless combustion time is 150～450 seconds; Do not meet the MT-181 regulation, the flaming combustion time of the present utility model, 6 sample summations were 16 seconds, single maximum value 3 seconds; Flameless combustion time 6 summations 35 seconds; Single maximum value is 12 seconds; Be better than the MT181 regulation.
The PVC flexible pipe of present embodiment has solved framework layer and plastic layer separation problem, the test of employing baking oven, detect the conventional hoses and the utility model flexible pipe that adopt different framework layers to strengthen, the separation case of framework layer and plastics, 110 ℃ of oven temperatures, each stoving time is 24 hours, at room temperature places after the taking-up to be one-period in 24 hours again.Test result shows that steel wire, is immersed in sample in the tap water of dyeing as the transparent hose of framework layer after 6 test periods, can see after 24 hours that steel wire and plastics surface of contact place are colored, and illustrate that steel wire and plastics have taken place to separate.With the flexible pipe that polyester thread is strengthened, behind 10 baking cycles, polyester thread obviously separates with plastics.And the utility model tubing is behind 20 baking cycles, no any segregation phenomenon between PVC runner and the flexible PVC, and the peeling strength between two-layer only descends 5.5%.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (2)
1. draw out methane under the coal mine and use polyvinyl chloride hose, it is characterized in that, described flexible pipe comprises soft PVC and is embedded in framework layer in the described soft PVC that described framework layer is made of the not plasticized polyvinyl chloride runner.
2. draw out methane under the coal mine as claimed in claim 1 and use polyvinyl chloride hose, it is characterized in that, separate by soft PVC between the adjacent not plasticized polyvinyl chloride runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202223899U CN201535399U (en) | 2009-09-03 | 2009-09-03 | Polyvinyl chloride hose for discharging gas under coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202223899U CN201535399U (en) | 2009-09-03 | 2009-09-03 | Polyvinyl chloride hose for discharging gas under coal mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535399U true CN201535399U (en) | 2010-07-28 |
Family
ID=42535178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202223899U Expired - Lifetime CN201535399U (en) | 2009-09-03 | 2009-09-03 | Polyvinyl chloride hose for discharging gas under coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692634A (en) * | 2013-12-10 | 2014-04-02 | 山西青科恒安矿业新材料有限公司 | Tube extrusion mold as well as tube and hose manufactured by using mold |
-
2009
- 2009-09-03 CN CN2009202223899U patent/CN201535399U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692634A (en) * | 2013-12-10 | 2014-04-02 | 山西青科恒安矿业新材料有限公司 | Tube extrusion mold as well as tube and hose manufactured by using mold |
| CN103692634B (en) * | 2013-12-10 | 2015-09-09 | 山西青科恒安矿业新材料有限公司 | Tube extrusion die and utilize tubing and the flexible pipe of this Making mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyvinyl chloride hose for discharging gas under coal mine Effective date of registration: 20111122 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2011990000447 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20120709 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2011990000447 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyvinyl chloride hose for discharging gas under coal mine Effective date of registration: 20120709 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2012990000357 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20130207 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2012990000357 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyvinyl chloride hose for discharging gas under coal mine Effective date of registration: 20130207 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2013990000096 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140321 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2013990000096 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Polyvinyl chloride hose for discharging gas under coal mine Effective date of registration: 20140321 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2014990000188 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Jiahua hi tech Development Zone, Shanxi province Taiyuan city 030006 Street No. 7, block C (International High Shuai science building 11 floor) Patentee after: Shanxi Qingke Hengan Mining New Material Co., Ltd. Address before: 030006, new development building, No. 288, Changzhi Road, Taiyuan hi tech Zone, Shanxi, 4 Patentee before: Shanxi Qingke Hengan Mining New Material Co., Ltd. |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170809 Granted publication date: 20100728 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Taiyuan branch Pledgor: Shanxi Qingke Hengan Mining New Material Co., Ltd. Registration number: 2014990000188 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100728 |
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| CX01 | Expiry of patent term |