CN204284520U - A kind of pipe safety construction external member - Google Patents
A kind of pipe safety construction external member Download PDFInfo
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- CN204284520U CN204284520U CN201420404935.1U CN201420404935U CN204284520U CN 204284520 U CN204284520 U CN 204284520U CN 201420404935 U CN201420404935 U CN 201420404935U CN 204284520 U CN204284520 U CN 204284520U
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- sacculus
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- gas injection
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Abstract
The utility model relates to a kind of pipe safety construction external member, described construction external member comprises pipeline, be arranged on the sacculus in pipeline, described sacculus is provided with pressure gauge, sacculus is provided with gas injection port, the diameter of described gas injection port is 1.5mm-25mm, described gas injection port is provided with valve or Special air nozzle.Advantage of the present utility model is as follows, 1) overall construction design is ingenious, and disassembly and assembly convenient maintenance and replacement, cost are lower, are convenient to promote the use of on a large scale; 2) this technological scheme by arranging sacculus in pipeline, by injecting pressurized gas in sacculus, guarantee the sealing effect of pipeline further, can pass through the fire retardant matter such as water or nitrogen flow in pipes in addition, the effect of its sealing of further reinforcement and obstruct combustible gas, to stop the generation of burning or blast; 3) for special pipeline, this technological scheme proposes the solution simultaneously arranging two sacculus and blocker, and sealing is better with flame retardant effect, and application area is more extensive.
Description
Technical field
The present invention relates to a kind of construction external member, specifically a kind of pipe safety construction external member, belongs to tubular service, Welding Safety processing technology field.
Background technique
In process treatment process before petrochemical plant maintenance, need after oil releasing remaining in equipment, pipeline, then purge, to reach the requirement of construction.And for longer factory's border pipeline etc., all need to carry out top water treatment, need to waste a large amount of water resourcess.In these pipeline technology processing procedures, need wash with water or after some hours, detect qualified row construction more afterwards with vapour cooking.And the frequent long time treatment of some pipeline is defective, cannot implement construction, or in work progress, the greasy filth deposited in pipeline discharges inflammable gas, causes detonation in pipe, personnel suffocate or even the accident such as fire explosion.And the cleaning of some under ground piping, inspection shaft, be limited to operating condition, under ground piping effectively cannot be isolated, often can cause hydrogen sulfide poisoning accident.Fire or blast must possess three key elements: inflammable matter, oxidizer and ignition source.These three key elements are indispensable, otherwise would not breaking out of fire or blast.In normal service process, we usually use as under type controls the generation of fire or blast: reduce or eliminate inflammable matter and combustible gas concentration, and within making its concentration be down to safety range, or carry out effectively isolating stoping entering of air to it.Method effect of the prior art is poor, entering or effusion that is poisonous, flammable explosive gas of air cannot be stoped, often occur blast or the poisoning dead situation of workmen in fire or pipeline construction process, therefore, a kind of new technological scheme of exigence solves the problems of the technologies described above.
Summary of the invention
The present invention is just for the technical problem existed in prior art, a kind of pipe safety construction external member is provided, this device overall construction design is ingenious, easy to operate, by isolating oxidizer, nitrogen displacement is carried out in pipeline, or water-filling seal isolation etc., and cost is lower, and easy to carry, can reuse, be convenient to promote the use of on a large scale.
To achieve these goals, the technical solution used in the present invention is, a kind of pipe safety construction external member, it is characterized in that, described construction external member comprises pipeline, is arranged on the sacculus in pipeline, described sacculus is provided with pressure gauge, sacculus is provided with gas injection port, and the diameter of described gas injection port is 1.5mm-25mm, described gas injection port is provided with valve or valve.
As a modification of the present invention, the centre of described sacculus is provided with injection tubule, and described injection tubule is arranged on the centre of sacculus, and diameter is 3mm-25mm, and described injection tubule is provided with valve.
As a modification of the present invention, described sacculus is also provided with exhaust duct, filling pipe, described exhaust duct, filling pipe are separately positioned on the both sides of gas injection tubule, and described exhaust duct, filling pipe are provided with valve.
A kind of vertical pipeline safe construction method, it is characterized in that, described method concrete steps are as follows, and 1) material in used pipeline to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open 3) sacculus is inserted in the pipeline cut open; 4) in sacculus, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa, 5) close gas injection port valve or valve, and above sacculus, add water seal isolation; 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out sacculus.
A kind of vertical pipeline safe construction method, it is characterized in that, described method concrete steps are as follows, and 1) material in used pipeline to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open 3) sacculus is inserted in the pipeline cut open; 4) in sacculus, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa, 5) close gas injection port valve or valve, add water seal isolation by the water injecting pipe through sacculus toward the top of sacculus; 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out sacculus.
A kind of horizontal pipe safe construction method, it is characterized in that, described method concrete steps are as follows, and 1) material in used pipeline to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open 3) two duplex sacculus are inserted in the pipeline cut open; 4) by gas injection port to injecting compressed air in two sacculus, internal pressure is 0.1-0.3MPa, 5) gas injection port valve or valve is closed, add water seal isolation by the water injecting pipe through sacculus toward the zone line of two sacculus or be filled with nitrogen and replace for several times, ensureing that in this part protection gas, oxygen content is lower than 0.5% (V); 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out sacculus.
The safe construction method that underground utility are effectively isolated, is characterized in that, described method concrete steps are as follows: 1) insert in pipeline by the sacculus matched with under ground piping diameter by inspection shaft; 2) in sacculus, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa; 3) harmful gas concentration is reduced to meeting the requirements to by air blast in inspection shaft; Combustible gas concentration is qualified lower than 0.2%; Oxygen content is 19.5% ~ 23.5%; H
2s MPC must not be greater than 10mg/m3; 4) personnel enter in well and carry out prune job; 5), after construction operation completes, venting, takes out sacculus.
Relative to prior art, advantage of the present invention is as follows, 1) overall construction design is ingenious, and disassembly and assembly maintenance is easy to carry, cost is lower, or recycling, is convenient to promote the use of on a large scale; 2) this technological scheme by arranging sacculus in pipeline, by injecting pressurized gas in sacculus, realizing the sealing effect of pipeline, can inject water or nitrogen in addition by waterflood-transmission line, strengthens its sealing and isolation effect further; 3) for special pipeline, this technological scheme proposes the scheme that colleague arranges two sacculus solutions, and sealing is better with isolation effect, and application area is more extensive; 4) involved in this technological scheme scheme is simple, easily operates, good sealing effect, further ensure that the Security of construction.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Wherein, 1, pipeline, 2, sacculus, 3, gas-injecting pipe, 4, valve or valve, 5, inject tubule, 6, filling pipe, 7, exhaust duct.
Embodiment
In order to deepen the understanding of the present invention and understanding, below in conjunction with accompanying drawing, the invention will be further described and introduce.
embodiment 1:as Fig. 1, a kind of pipe safety construction external member, described construction external member comprises pipeline 1, is arranged on the sacculus 2 in pipeline, and described sacculus 3 is provided with pressure gauge, sacculus is provided with gas injection port 3, the diameter of described gas injection port 3 is 1.5mm-25mm, determines, described gas injection port is provided with valve or valve 4 according to the size of sacculus or pipeline, the diameter of gas injection port 3 is traditionally arranged to be 2.0mm-25mm, determines according to the size of sacculus or pipeline.
embodiment 2:as Fig. 2, as a modification of the present invention, the centre of described sacculus 2 is provided with injects tubule 5, described injection tubule 5 is arranged on the centre of sacculus 2, and diameter is 3mm-25mm, determines according to the size of sacculus or pipeline, be traditionally arranged to be 4mm, described injection tubule is provided with valve 4.All the other structures are identical with embodiment 1 with advantage.
embodiment 3:as Fig. 3, as a modification of the present invention, described sacculus 2 is also provided with exhaust duct 7, filling pipe 6, described exhaust duct 7, filling pipe 6 are separately positioned on the both sides injecting tubule 5, and described exhaust duct 7, filling pipe 6 are provided with valve 4.
embodiment 4:as Fig. 1, a kind of vertical pipeline safe construction method, upward, described method concrete steps are as follows for this pipeline construction work surface, and 1) material in used pipeline 1 to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open; 3) sacculus 2 is inserted in the pipeline 1 cut open; 4) in sacculus, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa; 5) close gas injection port valve or valve 4, above sacculus, add water seal isolation, the liquid level height of water is made by oneself; 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out sacculus.
embodiment 5:as Fig. 2, a kind of vertical pipeline safe construction method, down, described method concrete steps are as follows for this pipeline construction work surface, and 1) material in used pipeline 1 to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open; 3) sacculus is put in 2 pipelines entering to cut open 1; 4) in sacculus 2, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa, 5) close gas injection port valve or valve 4, add water seal isolation by the water injecting pipe through sacculus toward the top of sacculus 2; 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out sacculus.
embodiment 6:as Fig. 3, a kind of horizontal pipe safe construction method, described method concrete steps are as follows, and 1) material in used pipeline 1 to be put quiet, pressure is let out to normal pressure; 2) at the pipeline place needing construction, with without flaming mode, pipeline is cut open; 3) two duplex sacculus 2 are inserted in the pipeline cut open; 4) by gas injection port to injecting compressed air in two sacculus, internal pressure is 0.1-0.3MPa; 5) close gas injection port valve or valve 4, add water seal isolation by the water injecting pipe through sacculus toward the zone line of two sacculus or be filled with nitrogen and replace for several times, ensureing that in this part protection gas, oxygen content is lower than 0.5%(V); 6) carry out the fiery construction operation of the laggard action of process treating in the side cut open, after construction operation completes, venting, takes out two sacculus 2.
embodiment 7:as Fig. 4, the safe construction method that a kind of underground utility are effectively isolated, described method concrete steps are as follows: 1) insert in pipeline by the sacculus matched with under ground piping diameter by inspection shaft; 2) in sacculus, carry out injecting compressed air by gas injection port, internal pressure is 0.1-0.3MPa; 3) harmful gas concentration is reduced to meeting the requirements to by air blast in inspection shaft; Combustible gas concentration is qualified lower than 0.2%; Oxygen content is 19.5% ~ 23.5%; H
2s MPC must not be greater than 10mg/m3; 4) personnel enter in well and carry out prune job; 5), after construction operation completes, venting, takes out sacculus.
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, equivalents done on the basis of technique scheme or the alternative scope all falling into the claims in the present invention and protect.
Claims (3)
1. a pipe safety construction external member, it is characterized in that, described construction external member comprises pipeline, be arranged on the sacculus in pipeline, described sacculus be provided with pressure gauge, sacculus is provided with gas injection port, the diameter of described gas injection port is 1.5mm-25mm, described gas injection port is provided with valve or valve.
2. pipe safety construction external member as claimed in claim 1, it is characterized in that, the centre of described sacculus is provided with injection tubule, and described injection tubule is arranged on the centre of sacculus, and diameter is 3mm-25mm, and described injection tubule is provided with valve or valve.
3. a kind of pipe safety construction external member as claimed in claim 2, it is characterized in that, described sacculus is also provided with exhaust duct, filling pipe, and described exhaust duct, filling pipe are separately positioned on the both sides injecting tubule, described exhaust duct, filling pipe are provided with valve or valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404935.1U CN204284520U (en) | 2014-07-22 | 2014-07-22 | A kind of pipe safety construction external member |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420404935.1U CN204284520U (en) | 2014-07-22 | 2014-07-22 | A kind of pipe safety construction external member |
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| CN204284520U true CN204284520U (en) | 2015-04-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214364A (en) * | 2014-07-22 | 2014-12-17 | 张寒军 | Pipeline safety construction suite and method |
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2014
- 2014-07-22 CN CN201420404935.1U patent/CN204284520U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214364A (en) * | 2014-07-22 | 2014-12-17 | 张寒军 | Pipeline safety construction suite and method |
| CN104214364B (en) * | 2014-07-22 | 2017-06-16 | 张寒军 | A kind of pipe safety construction external member and method |
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