CN1144326A - High pressure polyethylene insulated galvanized blasting bus - Google Patents
High pressure polyethylene insulated galvanized blasting bus Download PDFInfo
- Publication number
- CN1144326A CN1144326A CN 96104686 CN96104686A CN1144326A CN 1144326 A CN1144326 A CN 1144326A CN 96104686 CN96104686 CN 96104686 CN 96104686 A CN96104686 A CN 96104686A CN 1144326 A CN1144326 A CN 1144326A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- galvanized
- pressure polyethylene
- polyethylene insulated
- blasting
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
- C06C7/00—Non-electric detonators; Blasting caps; Primers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Insulated Conductors (AREA)
Abstract
The present invention provides a high-pressure polyethylene insulating galvanized blasting main lead. It is made up by using seven galvanized wires with diameter of 0.25-0.35 mm, twisting them into a strand by means of wire-twisting machine and using extruder to wind and wrap polyethylene on it. As compared with copper and aluminium coductors the high-pressure polyethylene insulating galvanized blasting lead wire has the advantages of lower cost, high tensile strength and reliable safety.
Description
The present invention relates to be applicable to the lead that connects in the engineering explosion between detonator lead-in wire and the exploder, specifically a kind of high pressure polyethylene insulated galvanized blasting bus.
Shot firing cable is the lead that connects between exploder and the electric cap, and its effect is to bear the electric current that exploder moment sends to greatest extent, can reduce resistance to greatest extent again, reduces the loss of electric current, plays the effect of igniting electric cap.At first, shot firing cable will have certain tensile strength, this can avoid produce and use in conductor fracture or segment conductor fractures, when electric current by the time cause breaking phenomena.Secondly, detonating fuse is a kind of running stores, and in use putting a big gun will loss 20m-100m.Therefore should consider its conductivity and pull resistance in use, consider its cost problem again, to avoid unnecessary waste.
At present China connects the lead between exploder and the electric cap line in industrial explosion, adopts 2.52 " copper is moulded line ", " plastics flexible cord ", " light-duty bedding and clothing line " to wait more and replaces use.The problem that this this lead exists is:
1, adopt copper to do conductor, the cost height, tensile strength is low;
2, adopt polyvinyl chloride insulation, be prone to crack performance at low temperatures, cause electric leakage, when electric current by the time can produce electric spark; When using under in coal mine, because of under the coal mine methane gas is arranged, meet electric spark and can blast; In addition, polyvinyl chloride is prone to aging phenomenon under the temperature condition with higher.
The objective of the invention is to problems, a kind of novel high pressure polyethylene insulated galvanized blasting bus is provided according to existing lead existence.
This kind high pressure polyethylene insulated galvanized blasting bus provided by the present invention be with seven diameters galvanized wire that is 0.25～0.35mm after the streakline machine is combined into one, twine with polyethylene from high pressure process through plastic extruding machine.
High pressure polyethylene insulated galvanized blasting line provided by the present invention at hot galvanizing silk that to adopt 7 diameters be 0.25～0.35mm through stranded for after one, diameter can reach between 0.75～1.05mm, safety can be born the pulse voltage up to 2500V of exploder moment generation, through evidence; Can stand 50Hz, 3000V alternating current; The test of dry type spark-over, service time was greater than 0.2 second; Its dc resistance is in the time of 20 ℃ Celsius, and every meter less than 0.5 ohm (actual measurement is 0.169 ohm/meter); Every meter of insulation resistance is more than or equal to 0.005M Ω; The zinc coat surface does not have crackle or peels off; Adopt polyethylene from high pressure process as insulating material, insulation thickness is more than or equal to 0.5mm, insulation evenly,, smooth, circle just, no burr, free from admixture particle, cross section and surperficial no bubble and trachoma; Polyethylene from high pressure process is high temperature resistant, low temperature resistant, between-50 ℃～+ 60 ℃, can not produce the be full of cracks and aging phenomenon, still can keep good insulation performance performance and flexibility.
Thereby the performance of high pressure polyethylene insulated galvanized blasting line provided by the invention is censured and is:
(1) tensile strength: Φ is the galvanized wire between 0.25～0.35mm, and monofilament tensile strength is 25%～40%mm, and development length is more than 10%～15%;
(2) can stand 50Hz, 3000V alternating current, do examination spark-over and test service time above 0.2 second;
(3) galvanized wire surface flawless or peeling phenomenon;
(4) insulation thickness is more than or equal to 0.5mm, and insulating barrier is uniform and smooth;
(5) in the time of 20 ℃ Celsius, every kilometer of insulation resistance is more than or equal to 5M Ω.
High pressure polyethylene insulated galvanized blasting line provided by the present invention is compared with copper, aluminum component conductor, and its advantage strengthens tensile strength for reducing cost; And adopt copper, aluminum component conductor, thick conductor cost height, thin conductor does not reach tensile strength, can cause and open circuit, therefore relatively prove through repetition test repeatedly, the lead that adopts hot galvanizing silk conductor, high pressure polyethylene insulated system to become is all to help engineering from every side and be superior to other lead.
Claims (3)
1, high pressure polyethylene insulated galvanized blasting bus is characterized in that: be made up of the wrapped zinc-plated thread that is covered with polyethylene from high pressure process of outer shroud.
2, the described high pressure polyethylene insulated galvanized blasting bus of claim 1 is characterized in that: stranded the forming of galvanized wire that described zinc-plated thread is is 0.25～0.35mm by seven diameters.
3, the described high pressure polyethylene insulated galvanized blasting bus of claim 1 is characterized in that: being characterized as of described shot firing cable:
(1) tensile strength: Φ is the galvanized wire between 0.25～0.35mm, and monofilament tensile strength is 25%～40%mm, and development length is more than 10%～15%;
(2) can stand 50Hz, 3000V alternating current, do examination spark-over and test service time above 0.2 second;
(3) galvanized wire surface flawless or peeling phenomenon;
(4) insulation thickness is more than or equal to 0.5mm, and insulating barrier is uniform and smooth;
(5) in the time of 20 ℃ Celsius, every kilometer of insulation resistance is more than or equal to 5M Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96104686 CN1144326A (en) | 1996-04-19 | 1996-04-19 | High pressure polyethylene insulated galvanized blasting bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96104686 CN1144326A (en) | 1996-04-19 | 1996-04-19 | High pressure polyethylene insulated galvanized blasting bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1144326A true CN1144326A (en) | 1997-03-05 |
Family
ID=5118451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96104686 Pending CN1144326A (en) | 1996-04-19 | 1996-04-19 | High pressure polyethylene insulated galvanized blasting bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1144326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8221160B2 (en) | 2009-12-15 | 2012-07-17 | Hon Hai Precision Ind. Co., Ltd. | Connector assembly having grounding means |
-
1996
- 1996-04-19 CN CN 96104686 patent/CN1144326A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8221160B2 (en) | 2009-12-15 | 2012-07-17 | Hon Hai Precision Ind. Co., Ltd. | Connector assembly having grounding means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |