CN107552505A - A kind of petroleum pipeline Special cleaning retracting device - Google Patents
A kind of petroleum pipeline Special cleaning retracting device Download PDFInfo
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- CN107552505A CN107552505A CN201710776784.0A CN201710776784A CN107552505A CN 107552505 A CN107552505 A CN 107552505A CN 201710776784 A CN201710776784 A CN 201710776784A CN 107552505 A CN107552505 A CN 107552505A
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- petroleum pipeline
- stainless steel
- retracting device
- special cleaning
- mild steel
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Abstract
The invention discloses a kind of petroleum pipeline Special cleaning retracting device, it is related to cleaning device technical field, the present invention includes the handle being sequentially connected in petroleum pipeline, electric pushrod one, motor, stainless steel waterpipe and support, the support surrounding is uniformly distributed four electric pushrods two, each end of electric pushrod two has been arranged alternately spatula and mild steel brush, the one end of the support away from stainless steel waterpipe is also associated with bowl-shape residue groove, gas absorption ball is also associated between the motor and stainless steel waterpipe, the present invention alternately coordinates realization to strike off petroleum pollution by spatula and mild steel brush, cleaning, crumbs collector is set to realize effective recovery of petroleum pollution simultaneously, the present invention is simple in construction, with energy-conservation, the advantages that reducing cleaning risk.
Description
Technical field
The present invention relates to cleaning device technical field, reclaims and fills more particularly to a kind of petroleum pipeline Special cleaning
Put.
Background technology
Oil is a kind of sticky, dark brown liquid, is referred to as " industrial blood ".The property of oil is different because of the place of production,
Density is 0.8~1.0g/cm3, range of viscosities is very wide, and freezing point difference is very big (30~-60 degrees Celsius), and boiling spread is normal temperature
To more than 500 degrees Celsius, a variety of organic solvents are dissolved in, it is not soluble in water, but emulsion can be formed with water.Oil is also manyization
Learn the raw material of industrial products such as solvent, chemical fertilizer, insecticide and plastics etc..
The composition of oil mainly has：Oily (this is its main component), colloid (a kind of sticky semi-solid material), pitch
Matter (crineous or black brittle solid material), carbonaceous.Oil has special gas by mixing based on hydrocarbon
Taste, coloured flammable oily liquid.Strictly speaking, the hydro carbons that oil is formed using hydrogen and carbon is main component.Form oil
Chemical substance with distillation can decompose.
Corresponding machining sector must be transported after oil exploitation can just put into utilization by processing, and petroleum pipeline is conveying
The essential equipment of oil, pipeline transportation has the characteristics that big freight volume, good airproof performance, cost is low and safety coefficient is high.Oil
Pipeline is made up of the steel pipe, oil transportation station and storage tank farm for connecting into line.Oil is in continuous transportation, on petroleum pipeline inwall
Many impurity, oil stain, rusty stain etc. can be remained, if if irregularly carrying out pipeline cleaning, these residual waste residue, oil stain and rusty stains
Aggregation can influence the freight volume of pipeline, cause the blocking of pipeline, influence transfer efficiency, therefore, it is necessary to periodically to petroleum pipeline
Cleaned.Generally to the method for petroleum pipeline cleaning, body surface dirt is removed using a kind of chemical agent, by chemical drugs
Agent and oil stain, the chemical conversion of residue, dissolving, stripping etc. reach the effect of degreasing, derusting and decontamination.
One number of patent application is that 201521000980.1 utility model patents disclose a kind of petroleum pipeline Special cleaning
Device, the device include handle, electric pushrod I, motor, stainless steel waterpipe and the support being sequentially connected, set successively on support
Electric pushrod II and electric pushrod III are put, in the setting arc shovel head symmetrical above and below of electric pushrod II, is set on electric pushrod III
Mild steel brush with sparge pipe, sparge pipe are connected by hose with stainless steel waterpipe, and swivel joint is housed on stainless steel waterpipe, rotation
Water inlet pipe is installed, the utility model is by controlling the flexible adjustment both sides mild steel brush of two electric pushrods III and oil on adapter
Pipe diameter is identical, starts motor and water pump, the rotation of motor driven support, and the electric pushrod III for making to connect on support rotates, entered
And mild steel brush and the cleaning fluid sprayed rotation are driven, clean up the pollutant in petroleum pipeline, when needing with scoop to stone
When the pollutant for being difficult to clean in oil-piping is struck off, control the flexible of electric pushrod II or electric pushrod I, adjustment scoop with
Petroleum pipeline diameter is identical, and pull handle makes scoop forward-reverse back and forth, reaches and pollutant is struck off.The device can be directed to
The petroleum pipeline of different-diameter height carries out cleaning, simple in construction, but the device there is also it is certain the defects of：The device
The residue, oil stain and rusty stain of petroleum pipeline inwall are cleaned, but the residue after clearing up is not returned preferably
Receipts processing, simultaneously because not only existing waste residue oil stain in petroleum pipeline, can also have some toxic gases, such as hydrogen sulfide, such as
Fruit handles these gases not in time, can give cleaning petroleum pipeline work bring certain harm, it is therefore desirable to one kind collection cleaning and
Integral energy-saving washing device is recovered in, improves petroleum pipeline cleaning efficiency.
The content of the invention
It is an object of the invention to：Terminate the skills such as residue treatment is insufficient to solve petroleum pipeline cleaning in the prior art
Art problem, the present invention provide a kind of petroleum pipeline Special cleaning retracting device.
The present invention specifically uses following technical scheme to achieve these goals：
A kind of petroleum pipeline Special cleaning retracting device, including be sequentially connected in petroleum pipeline handle, electronic push away
Bar one, motor, stainless steel waterpipe and support, the support surrounding are uniformly distributed four electric pushrods two, each electric pushrod two
End has been arranged alternately spatula and mild steel brush, and the one end of the support away from stainless steel waterpipe is also associated with bowl-shape residue groove, institute
State and gas absorption ball is also associated between motor and stainless steel waterpipe.
Further, multiple water spray ducts are set in the mild steel brush brush body, multiple arcs are set on the mild steel brush brush body
Shape bristle, the mild steel brush bristle are bonded with petroleum pipeline inwall, and the cleaning fluid in stainless steel waterpipe is by support and electronic pushes away
The intake tunnel that the inside of bar two is set enters water spray duct and sprayed, and mild steel brush bristle is arranged to the arc being bonded with petroleum pipeline wall
Shape, it is more abundant that cambered design makes mild steel brush bristle be contacted with petroleum pipeline wall, and the cleaning performance of bristle is more preferable.
Further, the spatula head configuration is arranged to continuous tooth form, using continuous tooth form spatula in petroleum pipeline
Pollutant when being struck off, spatula contacts fully with petroleum pipeline inwall, makes spatula more laborsaving when working, while can be more
Thorough scraped clean.
Further, spiraled on the petroleum pipeline outer wall and be provided with heating tube, because oil has certain viscosity, meeting
Constantly adhere on petroleum pipeline wall, the heating tube spiraled on petroleum pipeline transfers thermal energy to tube wall, makes tube wall temperature liter
Height, the viscosity of crude of attachment are reduced, easily flowed down from tube wall, are also offered convenience to tube wall cleaning.
Further, swivel joint is installed on the stainless steel waterpipe, water inlet pipe, institute are installed on the swivel joint
State water inlet pipe to be connected with water pump, water pump extracts cleaning fluid out, enters in stainless steel waterpipe by water inlet pipe.
Further, the bowl-shape residue frid tapers into along end thickness becomes arc spade, sets bowl-shape residue
On the one hand groove can carry out a collection recovery to striking off the petroleum residue to get off；On the other hand, it is bowl-shape under the driving of motor
Residue groove constantly rotates, while under the telescopic action of electric pushrod one, the arc shovel on bowl-shape residue frid edge can also play
The effect of striking off to petroleum pipeline inwall oil stain, dirt.
Further, activated carbon is provided with the gas absorption ball, the gas absorption ball surface is provided with stomata, living
Property charcoal can adsorb some toxic gases in petroleum pipeline, reduce the risk of petroleum pipeline cleaning；Gas absorption ball surface is set
The air vent aperture put is smaller, passes the gas through aperture into being absorbed by the activated carbon in gas absorption ball, prevents in gas absorption ball
Activated carbon motor drive rotational case under drop in petroleum pipeline.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the present invention is replaced by being uniformly arranged four electric pushrods two in support surrounding in each end of electric pushrod two
Spatula and mild steel brush be set, and under the driving of motor, while spatula strikes off the pollutant of petroleum pipeline, mild steel brush is to striking off
Pollutant is cleaned, and carries out recovery collection to the pollutant residue for striking off cleaning using bowl-shape residue groove, whole device is not only
Realize to the striking off of residue pollutant in petroleum pipeline, clean, while effective recovery also has been carried out to residue pollutant, clearly
Wash efficiency raising, energy-conserving and environment-protective.
2nd, the present invention sets multiple water spray ducts, motor driven stainless steel waterpipe and support rotation on mild steel brush brush body,
Mild steel brush on support is rotated, the rotation of the cleaning fluid and mild steel brush that are sprayed by duct of spraying water, makes the pollution in petroleum pipeline
Thing cleans up, and mild steel brush bristle is shaped to arc, mild steel brush bristle is contacted with petroleum pipeline wall more abundant, and cleaning is more
Thoroughly.
3rd, the present invention sets heating tube by being spiraled on petroleum pipeline outer wall, and heating tube transfers thermal energy to tube wall, made
Tube wall temperature raises, and reduces viscosity of crude, so as to be easier to be flowed down from petroleum pipeline, offers convenience, subtracts to tube wall cleaning
Light cleaning dynamics.
4th, spatula profile of the present invention sets continuous tooth form, and the contact range of continuous tooth form spatula and petroleum pipeline increases,
When being struck off to the pollutant in petroleum pipeline, make spatula more laborsaving when working, while being capable of more thorough scraped clean.
5th, for the present invention by setting bowl-shape residue groove in support one end, bowl-shape residue frid tapers into change along end thickness
Camber spade, set bowl-shape residue groove on the one hand can carry out a collection recovery to striking off the petroleum residue to get off；It is another
Aspect, under the driving of motor, bowl-shape residue groove constantly rotates, under the telescopic action of electric pushrod one, bowl-shape residue frid
The arc shovel on edge can also strike off to petroleum pipeline, reach the purpose for striking off oil tube wall pollutant.
6th, the present invention is provided with by setting gas absorption ball between motor and stainless steel waterpipe in gas absorption ball
Activated carbon, some toxic gases in petroleum pipeline are adsorbed, reduce the risk of petroleum pipeline cleaning；Gas absorption ball surface simultaneously
The less stomata in aperture is provided with, aperture is passed the gas through into while being absorbed by the activated carbon in gas absorption ball, prevents gas
Activated carbon in body adsorbing sphere is dropped in petroleum pipeline in the case where motor drives rotational case.
Operation principle of the present invention：When being cleaned using the present invention to petroleum pipeline inwall, heating tube is spiraled in petroleum pipeline
On pipeline outer wall, petroleum pipeline is transferred heat to, petroleum pipeline temperature is constantly raised, and whole device is pushed into petroleum pipeline,
Control electric pushrod two flexible, it is straight with petroleum pipeline by the distance between flexible the adjustment mild steel brush and spatula of electric pushrod two
Footpath is identical, and the mild steel brush and spatula for alloing both sides are deep into petroleum pipeline, starts water pump and motor, and water pump extracts cleaning
Liquid, cleaning fluid spray by water inlet pipe, stainless steel waterpipe, and from water spray duct, motor driven stainless steel waterpipe and support rotation,
Make the mild steel brush on support and spatula rotation, cleaning fluid sprays from water spray duct, coordinates mild steel brush together to clean, make petroleum pipeline
Interior pollutant impurity cleans up, while pull handle or does flexible fortune by starting the pushing meanss of electric pushrod one back and forth
It is dynamic, whole cleaning device can be made to advance or retreat in petroleum pipeline, spatula and mild steel brush alternation, spatula are first carried out
Strike off, mild steel brush is then cleared up, and and so on, realizes the cleaning to pollutant in petroleum pipeline, the pollutant cleaned out
Drop in petroleum pipeline, for bowl-shape residue groove under motor turning effort, bowl-shape residue frid is dirty along the rusty stain to petroleum pipeline
Thing etc. is struck off, while under the telescopic action of electric pushrod one, bowl-shape residue groove is received the residue waste cleaned out
Collection, processing to be cleaned are completed, and whole device is extracted out of petroleum pipeline, carry out the processing such as follow-up cleaning.
Brief description of the drawings
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein：
Fig. 1 is a kind of petroleum pipeline Special cleaning retracting device structural representation (front view) of the present invention；
Fig. 2 is a kind of petroleum pipeline Special cleaning retracting device structural representation (left view) of the present invention；
Fig. 3 is the bowl-shape residue slot structure schematic diagram (left view (left side) and front view (right side)) of the present invention；
Reference：001- heating tubes, 002- mild steel brushes, 003- stainless steel waterpipes, 004- gas absorption balls, 005- electricity
Machine, 006- electric pushrods one, 007- handles, 008- water inlet pipes, 009- water pumps, 010- swivel joints, 011- spatuves, 012- machines
Seat, 013- electric pushrods two, the bowl-shape residue grooves of 014-, 015- petroleum pipelines, 016- water sprays duct.
Embodiment
In order to which those skilled in the art are better understood from the present invention, below in conjunction with the accompanying drawings with following examples to the present invention
It is described in further detail.
Embodiment 1
As shown in figure 1, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in 015, the support
012 surrounding is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and mild steel
Brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the motor 005 and not
Gas absorption ball 004 is also associated between rust molten steel pipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
In the present embodiment, control electric pushrod two is flexible, by flexible the adjustment mild steel brush and spatula of electric pushrod two it
Between distance it is identical with petroleum pipeline diameter, the mild steel brush and spatula for alloing both sides are deep into petroleum pipeline, start water pump
And motor, water pump extract cleaning fluid, cleaning fluid passes through water inlet pipe and stainless steel waterpipe, and the water spray duct out of mild steel brush brush body
Spray, motor driven stainless steel waterpipe and support rotation, make mild steel brush on support and spatula rotation, cleaning fluid is from water spray duct
Spray, coordinate mild steel brush together to clean, clean up the pollutant impurity in petroleum pipeline, while pull handle or logical back and forth
Cross the pushing meanss of startup electric pushrod one and do stretching motion, can make whole cleaning device advance in petroleum pipeline or after
Move back, spatula and mild steel brush alternation, spatula are first struck off, and mild steel brush is then cleared up, and and so on, is realized to oil
The cleaning of pollutant in pipeline.
Embodiment 2
As shown in Figure 1-2, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in 015, the support
012 surrounding is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and mild steel
Brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the motor 005 and not
Gas absorption ball 004 is also associated between rust molten steel pipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
Multiple water spray ducts 016 are set in the brush body of mild steel brush 003, multiple arcs are set on the brush body of mild steel brush 002
Shape bristle, the bristle of mild steel brush 002 are bonded with the inwall of petroleum pipeline 015.
In the present embodiment, start water pump and motor, water pump extracts cleaning fluid, and cleaning fluid passes through in support and electric pushrod two
The intake tunnel that portion is set enters water spray duct and sprayed, and motor driven stainless steel waterpipe and support rotation, makes the mild steel on support
Brush and spatula rotation, mild steel brush bristle are arranged to the arc being bonded with petroleum pipeline wall, make mild steel brush bristle and petroleum pipeline wall
Contact is more abundant, and the cleaning performance of bristle is more preferable.
Embodiment 3
As shown in Figure 1-2, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in 015, the support
012 surrounding is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and mild steel
Brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the motor 005 and not
Gas absorption ball 004 is also associated between rust molten steel pipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
The head configuration of spatula 011 is arranged to continuous tooth form.
In the present embodiment, start water pump and motor, water pump extracts cleaning fluid, and cleaning fluid passes through in support and electric pushrod two
The intake tunnel that portion is set enters water spray duct and sprayed, and motor driven stainless steel waterpipe and support rotation, makes the mild steel on support
Brush and spatula rotation, when being struck off using continuous tooth form spatula to the pollutant in petroleum pipeline, continuous tooth form spatula and stone
The contact of oil-piping inwall is abundant, makes spatula more laborsaving when working, while being capable of more thorough scraped clean.
Embodiment 4
As shown in figure 1, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in 015, the support
012 surrounding is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and mild steel
Brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the motor 005 and not
Gas absorption ball 004 is also associated between rust molten steel pipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
Spiraled on the outer wall of petroleum pipeline 015 and be provided with heating tube 001.
In the present embodiment, the heating tube spiraled on petroleum pipeline transfers thermal energy to tube wall, raises tube wall temperature, attached
The viscosity of crude reduces, and is easily flowed down from tube wall, be easy to mild steel brush and spatula in petroleum pipeline petroleum pollution it is clear
Wash and strike off.
Embodiment 5
As shown in Figure 1, Figure 3, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in road 015, the machine
012 surrounding of seat is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and soft
Steel brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the He of motor 005
Gas absorption ball 004 is also associated between stainless steel waterpipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
The bowl-shape plate of residue groove 014 tapers into along end thickness becomes arc spade.
In the present embodiment, set bowl-shape residue groove on the one hand can be collected back to striking off the petroleum residue to get off progress one
Receive；On the other hand, under the driving of motor, bowl-shape residue groove constantly rotates, while under the telescopic action of electric pushrod one, bowl
The arc shovel on shape residue frid edge can also strike off to the oil stain in petroleum pipeline, dirt.
Embodiment 6
As shown in figure 1, the present embodiment provides a kind of petroleum pipeline Special cleaning retracting device, including positioned at petroleum pipeline
Handle 007, electric pushrod 1, motor 005, stainless steel waterpipe 003 and the support 012 being sequentially connected in 015, the support
012 surrounding is uniformly distributed four electric pushrods 2 013, and each end of electric pushrod 2 013 has been arranged alternately spatula 011 and mild steel
Brush 002, the described one end of support 012 away from stainless steel waterpipe 003 are also associated with bowl-shape residue groove 014, the motor 005 and not
Gas absorption ball 004 is also associated between rust molten steel pipe 003.
Swivel joint 010 is installed on the stainless steel waterpipe 003, water inlet pipe is installed on the swivel joint 010
008, the water inlet pipe 008 is connected with water pump 009, and water pump 009 extracts clean water out, and stainless steel is entered by water inlet pipe 008
In water pipe 003.
Activated carbon is provided with the gas absorption ball 004, the surface of gas absorption ball 004 is provided with stomata.
In the present embodiment, activated carbon is provided with gas absorption ball, it is smaller that gas absorption ball surface is provided with aperture
Stomata, activated carbon can adsorb some toxic gases in petroleum pipeline, reduce the risk of petroleum pipeline cleaning；Gas absorption
The air vent aperture that ball surface is set is smaller, passes the gas through aperture into being absorbed by the activated carbon in gas absorption ball, prevents gas
Activated carbon in adsorbing sphere is dropped in petroleum pipeline in the case where motor drives rotational case.
Described above, only presently preferred embodiments of the present invention is not intended to limit the invention, patent protection model of the invention
Enclose and be defined by claims, the equivalent structure change that every specification and accompanying drawing content with the present invention is made, similarly
It should include within the scope of the present invention.
Claims (7)
1. a kind of petroleum pipeline Special cleaning retracting device, including the handle being sequentially connected in petroleum pipeline (015)
(007), electric pushrod one (006), motor (005), stainless steel waterpipe (003) and support (012), it is characterised in that the machine
Seat (012) surrounding is uniformly distributed four electric pushrods two (013), and each (013) end of electric pushrod two has been arranged alternately spatula
(011) and mild steel brush (002), the one end of the support (012) away from stainless steel waterpipe (003) are also associated with bowl-shape residue groove
(014), it is also associated with gas absorption ball (004) between the motor (005) and stainless steel waterpipe (003).
2. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that the mild steel brush (003)
Multiple water sprays duct (016) are set in brush body, multiple arcs bristle, the mild steel brush are set on mild steel brush (002) brush body
(002) bristle is bonded with petroleum pipeline (015) inwall.
3. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that spatula (011) head
Portion's profile is arranged to continuous tooth form.
4. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that the petroleum pipeline
(015) spiraled on outer wall and be provided with heating tube (001).
5. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that the stainless steel waterpipe
(003) swivel joint (010) is installed on, water inlet pipe (008), the water inlet pipe are installed on the swivel joint (010)
(008) it is connected with water pump (009).
6. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that the bowl-shape residue groove
(014) plate tapers into along end thickness becomes arc spade.
7. petroleum pipeline Special cleaning retracting device according to claim 1, it is characterised in that the gas absorption ball
(004) activated carbon is provided with, gas absorption ball (004) surface is provided with stomata.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776784.0A CN107552505A (en) | 2017-08-31 | 2017-08-31 | A kind of petroleum pipeline Special cleaning retracting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710776784.0A CN107552505A (en) | 2017-08-31 | 2017-08-31 | A kind of petroleum pipeline Special cleaning retracting device |
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|---|---|
| CN107552505A true CN107552505A (en) | 2018-01-09 |
Family
ID=60978135
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| CN201710776784.0A Withdrawn CN107552505A (en) | 2017-08-31 | 2017-08-31 | A kind of petroleum pipeline Special cleaning retracting device |
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Application publication date: 20180109 |
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