CN109432877A - Three-in-one vertical grit catcher and sand removing process - Google Patents
Three-in-one vertical grit catcher and sand removing process Download PDFInfo
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- CN109432877A CN109432877A CN201811422550.7A CN201811422550A CN109432877A CN 109432877 A CN109432877 A CN 109432877A CN 201811422550 A CN201811422550 A CN 201811422550A CN 109432877 A CN109432877 A CN 109432877A
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- 239000004576 sand Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 10
- 239000013049 sediment Substances 0.000 claims abstract description 18
- 238000003860 storage Methods 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 229910001220 stainless steel Inorganic materials 0.000 claims description 17
- 239000010935 stainless steel Substances 0.000 claims description 17
- 238000000926 separation method Methods 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 230000008092 positive effect Effects 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
- B01D36/045—Combination of filters with centrifugal separation devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of three-in-one vertical grit catcher and sand removing process, desander includes fast opening blind and vertical cylinder, medium entrance is arranged on the vertical cylinder top, media outlet is arranged in middle part, and lower part setting recoil mouth, sand removing hole is arranged in bottom；Screen casing is set inside the vertical cylinder, and the screen casing top is connected with vertical cylinder top, and screen casing lower part is connect with media outlet；The medium entrance is the medium entrance of tangent line air inlet, and rotational flow guide device is arranged at medium entrance, and in the lower part of media outlet setting storage sand space, conical hopper is arranged below storage sand space；Import difference gauge is set at medium entrance, and a mouthful difference gauge is set out at media outlet.Compared with prior art, the positive effect of the present invention is: improving desanding precision, reduces the influence operated normally to upstream device, monitors the sediment outflow time by differential pressure, determine the opportunity of sediment outflow operation, sediment outflow is easy to operate, reduces operation difficulty.
Description
Technical field
The present invention relates to a kind of three-in-one vertical grit catcher and sand removing processs.
Background technique
What shale gas exploitation generallyd use at present is hydrofracturing method, and when exploitation need to be by a large amount of water mixing silt particles and small amount
Learn in substance injection well, the main component of silt particle is 30~100 mesh haydites, and the haydite quantity is big, and hardness is high, individual well sand feeding amount compared with
Greatly, if this part haydite and silt particle not separated, by the equipment and the serious erosion of pipeline generation to downstream, system is influenced
Safety and steady operation, therefore it is most important to carry out effective desanding.
Existing desander is Horizontal-type filtering structure, and aqueous and sand shale gas enters desander, sand grains along medium entrance
It is deposited in screen casing, gas and water and part sand pass through screen casing to downstream line.When sand grains passes through desander downstream line and valve,
Pipeline and valve inner wall can be washed away, the damage of valve and pipeline and the generation of accident are caused.Sand grains deposits to centainly in screen casing
When amount, it is necessary to open the fast opening blind of desander, take out screen casing and clear up sand grains therein.It opens in fast opening blind cleaning screen casing
Sand grains workload it is relatively complicated, and early period, operating frequency was high, and screen casing generally uses cutting seam sieve tube formula, and filtering accuracy is in 0.20mm
Left and right.
It is found according to field practice, there are following deficiencies for existing desander:
First, the interference connection that the connection of desander and screen casing uses, the benefit of this connection is no gap, convenient for sieve
The sealing of pipe.Disadvantageously the disassembly of screen casing is inevitable, in the process of disassembly, because using Hard link, end
Portion is easily damaged, and repeatedly disassembly is difficult to ensure its sealing performance
Second, the haydite that shale gas uses is generally all between 0.1mm~0.5mm, most using cutting seam sieve tube formula screen casing
Small filter diameter is 0.20mm, therefore diameter is less than the gravel of 0.20mm, which can not separate, low separation efficiency.
Third, filtered depositing gravel can block the circulation area of screen casing, influence separative efficiency in screen casing.
Summary of the invention
The shortcomings that in order to overcome the prior art, the present invention provides a kind of three-in-one vertical grit catcher and sand removing processs, will
Eddy flow, filtering, Gravity Separation technology combine, improve the separative efficiency of gravel in shale gas, effectively protect downstream
Equipment and pipeline even running, extend system overhaul maintenance period, there is high Social benefit and economic benefit.It is novel
The rotational flow guide device and boxing stainless steel that shale gas includes vertical cylinder with three-in-one desander and is arranged in vertical cylinder
Screen casing, is respectively set medium entrance and media outlet on vertical cylinder top and middle part, and the bottom of vertical cylinder is provided with row
Sand outlet.Boxing stainless steel screen casing of the invention has the characteristics that handling simple, sealed reliable, critical external compressive resistance, capable of washing, improves
The separative efficiency of desander, avoiding boxing stainless steel screen casing, there is a situation where external pressures to destroy, and greatly protects setting for downstream
Standby and pipeline.
The technical scheme adopted by the invention is that: a kind of three-in-one vertical grit catcher, including fast opening blind and vertical cylinder,
Medium entrance is set on the vertical cylinder top, media outlet is arranged in middle part, and lower part setting recoil mouth, sediment outflow is arranged in bottom
Mouthful；Screen casing is set inside the vertical cylinder, and the screen casing top is connected with vertical cylinder top, and screen casing lower part goes out with medium
Mouth connection；The medium entrance is the medium entrance of tangent line air inlet, and rotational flow guide device is arranged at medium entrance, goes out in medium
The lower part setting storage sand space of mouth, is arranged conical hopper below storage sand space；Import difference gauge is set at medium entrance, is being situated between
Matter exit sets out a mouthful difference gauge.
The present invention also provides a kind of sand removing processs using three-in-one vertical grit catcher, including following content:
One, the shale gas containing sand and water enters inner barrel from medium entrance in tangential direction, is led by the eddy flow of setting
Eddy flow centrifugal force is formed to device, gravel is carried out to preliminary separation；The shale gas and screen casing containing sand and water after initial gross separation
It being collided, the gravel greater than separation accuracy not can enter inside screen casing, by separating twice, sand and the water conservancy weight isolated
Power enters storage sand space, and the water having more is flowed out from media outlet；
Two, judge whether screen casing blocks using two difference gauges that desander import and export is arranged in, when passing through differential manometer
When showing that screen casing inside and outside differential pressure is larger, illustrate that screen casing needs to clean, is accessed at the larger bolt hole of screen casing cover plate central setting
Low pressure clear water carries out recoil cleaning to screen casing；
Three, when carrying out sediment outflow operation, recoil mouth connects low pressure water to the cylinder lower part space Chu Sha from the separator in downstream
Interior gravel is rinsed, and the gravel after flushing is discharged using gravity from sand removing hole.
Compared with prior art, the positive effect of the present invention is: improving desanding precision, reduces normal to upstream device
The influence of operation monitors the sediment outflow time by differential pressure, determines the opportunity of sediment outflow operation, and sediment outflow is easy to operate, and it is difficult to reduce operation
Degree.Specific manifestation is as follows:
1, at the top of vertical cylinder, fast opening blind is set, fast opening blind uses when overhauling screen casing, can accomplish quickly to tear open
It unloads, reduces labor intensity.
2, on vertical cylinder top, the medium entrance of tangent line air inlet is set, and eddy flow is set at medium entrance and is oriented to dress
It sets, after guaranteeing that medium enters equipment, can use the kinetic energy of medium itself, form eddy flow, size gravel is separated, big
Gravel enters the storage sand space of device bottom due to the effect nature of the centrifugal force of gravity.
3, dismountable boxing stainless steel screen casing, one end setting wedge structure and O of screen casing are set inside vertical cylinder
Cover board and trunnion is arranged in type sealing ring, the other end, guarantees the convenient disassembly and sealing performance of screen casing, centre setting boxing stainless steel
Screen casing, precision are adjusted from 0.05mm to 0.25mm according to the characteristic of medium and isolated requirement, but boxing stainless steel screen casing
Circulation area SSieveKS should be not less thanInto, wherein SIntoFor equipment importation circulation area, K is empirical coefficient.
4, vertical cylinder middle part be arranged media outlet, guarantee medium in if aqueous, water can by screen casing from
Outflow, makes water non clogging screen pipe, guarantees the circulation area of screen casing in the middle part of equipment.
5, in the lower part of vertical cylinder there are storage sand space, size can sediment outflow minimum time according to the technological requirements it is true
It is fixed.
6, vertical cylinder bottom is provided with recoil mouth and sand removing hole, when carrying out sediment outflow operation, the mouth that recoils is from downstream
It connects low pressure water in separator to be rinsed the gravel in the space Chu Sha of cylinder lower part, the gravel after flushing is since gravity is from sediment outflow
Mouth discharge.
7, difference gauge is set in the inlet and outlet of vertical cylinder, judges whether screen casing blocks using difference gauge, determine that sediment outflow is made
The opportunity of industry.
8, vertical grit catcher is using being arranged in parallel two-by-two, and when work, two desanders carry out desanding operation, Dang Yitai simultaneously
The prompting of equipment difference gauge closes the imported valve of this TV station desander when needing sediment outflow operation, and another desander is temporarily simultaneously
Handle the treating capacity of 2 equipment.This TV station equipment is first vented, and accesses storage sand space of the low pressure water to cylinder lower part of downstream separator
It being backwashed, after flushing, the imported valve for opening this TV station desander works on, restore two equipment parallel connection desanding,
The function of rotation sediment outflow meets the needs that technique is worked continuously.
And boxing stainless steel screen casing of the invention is easy with handling, sealed reliable, critical external compressive resistance, feature capable of washing,
The separative efficiency of desander is referred to, the equipment and pipeline in downstream are greatly protected, solves existing boxing stainless steel screen casing
Poor, the easy to damage problem of operability.Compared to boxing stainless steel screen casing is directlyed adopt, detachable desander screen casing of the invention exists
Top is provided with connection bolt and opens bolt, is easy for installation and removal；Wedge-shape connector and O-shaped close is provided in screen casing bottom
Seal was not only easily installed, but also guaranteed sealing；It is provided with three stiffening rings inside screen casing, not only increases intensity, but also light and handy easily peace
Dress；Four biggish bolts hole are provided in screen casing top center, can be used at work as balance port, it can also be clear
It is used when washing as backwash mouth.Specific manifestation is as follows:
1, screen casing top blind flange is circle, is surrounded by four trunnions, matches on trunnion and bore four biggish screw holes, in desanding
Corresponding position sets four supporting plates inside device, a lesser bolt hole is bored on each supporting plate, and with there are four lesser interior hexagonals
Bolt is used when screen casing is connected with desander as fastening.
2, handle is set in screen casing top blind flange, it is easy to disassemble.
3, screen body uses the boxing stainless steel screen casing of standard, and filtering accuracy is between 0.1mm to 0.25mm, Ke Yigen
It is adjusted according to the needs of user.
4, upper, middle and lower respectively serves as a contrast one of reinforcing ring in screen casing, is equipped with a cross hang in each reinforcing ring, guarantees screen casing
Critical external compressive resistance ability, the critical external compressive resistance ability of entire screen casing is in 2MPa or so.
5, screen casing bottom be arranged Wedge-shape connector, wedge shape connection ensure that screen casing installation when to neutrality, simple to install.
6, it is provided with a circle O-ring seal on Wedge-shape connector, ensure that the leakproofness of installation ethmoid canal,posterior.
7, four biggish bolts hole are set at screen casing top blind flange center, and the biggish hexagon socket head cap screw with there are four removes
When sand device water is larger, inside and outside differential pressure can be avoided too big, cause screen damage with the larger bolt hole of blow-by；Desander operation
When steady, separative efficiency can be improved with sealing bolt hole；When showing that screen casing inside and outside differential pressure is larger by differential manometer, illustrate to sieve
Pipe needs to clean, and low pressure clear water can be accessed at bolt hole, carries out recoil cleaning to screen casing.
8, four biggish hexagon socket head cap screws that screen casing top blind flange is matched, the unlatching bolt that can be used as screen casing use,
When screen casing needs maintenance and inspection, four lesser hexagon socket head cap screws of fastening are first opened, then with four biggish interior hexagonals
Screen casing top pine is finally utilized handle by screen casing removal by bolt.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of this three-in-one vertical grit catcher；
Fig. 2 is the structural schematic diagram of screen casing；
Fig. 3 is the top view of Fig. 2；
Fig. 4 is the structural schematic diagram of extracting tool；
Fig. 5 is the structural schematic diagram of smaller hexagon socket head cap screw；
Fig. 6 is the structural schematic diagram of larger hexagon socket head cap screw.
Specific embodiment
A kind of three-in-one vertical grit catcher, as shown in Figure 1, comprising: fast opening blind 21, medium entrance 22, eddy flow guiding dress
Set 23, media outlet 24, storage sand space 25, the bearing of ear formula 26, conical hopper 27, import difference gauge 28, sand removing hole 29, end socket
30, recoil mouth 31, exports difference gauge 32, cylinder 33, screen casing 34, cover board trunnion 35, in which:
At the top of the three-in-one vertical grit catcher cylinder 33 of novel shale gas be arranged fast opening blind 21, top be arranged medium into
Media outlet 24 is arranged in mouth 22, middle part, and lower part setting recoil mouth 31, sand removing hole 29 is arranged in bottom.It is arranged at medium entrance 22
Rotational flow guide device 23, is arranged screen casing 34 inside cylinder 33, the wedge structure and O-shaped sealing that screen casing 34 is arranged by itself one end
The cover board trunnion 35 and cylinder 33 of circle and the other end are attached installation, and after being installed, screen casing 34 is located in cylinder 33
The heart, while guaranteeing that the sealing inside and outside screen casing 34 completely cuts off, it is provided with handle at the top of screen casing 34, it is easy to disassemble.The setting of 34 lower part of screen casing
Media outlet 24, filtered medium are flowed out from outlet.24 lower part of media outlet is provided with storage sand space 25, when difference gauge is more than
When certain differential pressure, sediment outflow operation is carried out, low pressure water flows into storage sand space 25 from recoil mouth 31, and conical hopper 27, which plays, to be prevented from blocking
Effect, due to gravity storage sand space 25 in gravel from sand removing hole 29 be discharged.Import difference gauge 28 is arranged in medium entrance 22, is situated between
24 setting outlet difference gauge 32 of matter outlet determines the time of sediment outflow operation for monitoring differential pressure.
The screen casing is boxing stainless steel screen casing, and structure is as shown in Figures 2 to 6, comprising: handle 1, cover board 2, branch ear snail
Keyhole 3, boxing stainless steel screen casing 4, reinforcing ring 5, Wedge-shape connector 6, O-ring seal 7, centre bolt hole 8, extracting tool 9, compared with
Small hexagon socket head cap screw 10, larger hexagon socket head cap screw 11, in which:
There is cover board 2 at the top of screen casing, there is handle 1 on cover board 2,2 surrounding of cover board is there are four trunnion, with boring four on trunnion
Screen casing is fixed in desander by biggish bolt hole 3 using four lesser hexagon socket head cap screws 10.Screen body part uses
Boxing stainless steel screen casing 4, inside set three reinforcing ring 5 of upper, middle and lower, and per pass reinforcing ring 5 is equipped with cross hang.Wedge is arranged at screen casing bottom
Shape connector 6, and it is equipped with O-ring seal 7, guarantee the leakproofness connected with desander.Have four at 2 center of top blind flange of screen casing
A larger bolt hole 8, and the larger hexagon socket head cap screw 11 with there are four may be selected opening and closing and are used as balance pressure in desander work
The balance port of difference uses, and in desander maintenance, biggish hexagon socket head cap screw 11, which can be used as, opens bolt use.Screen casing is equipped with special
It with workpiece 9, uses for convenience, the size that biggish hexagon socket head cap screw 11 covers can be unified for lesser model, be furnished with one
Lesser interior hexagonal special handling tool.
The working principle of boxing stainless steel screen casing is: novel dismountable desander screen casing is mounted in desander, desander
Using outside into it is interior go out by the way of, by screen casing filtering sand, and inlet and outlet be arranged differential manometer, by measure pressure difference determine filter cylinder
Whether need to clean.
When this screen casing is installed, it is directed at the connector inside desander with Wedge-shape connector 6, due to the characteristic of wedge structure,
Screen casing can be very good centering, guarantees the secured of equipment installation, four smaller hexagon socket head cap screws are tightened at larger bolt hole 3,
The sealing for guaranteeing O-ring seal 7, is installed.
This screen casing is in use, medium is flowed out of screen casing extroversion screen casing, using the strainability of boxing stainless steel screen casing 4,
By the gravel separation in medium, due to the presence of reinforcing ring 5, screen casing can bear biggish external pressure, about 2MPa.Work as simultaneously and removes
When water is larger in sand device, inside and outside differential pressure can be avoided too big, cause screen damage with the larger bolt hole 8 of blow-by；Desander fortune
When row is steady, larger bolt hole 8 can be sealed, improves separative efficiency；When showing that screen casing inside and outside differential pressure is larger by differential manometer,
Illustrate that screen casing needs to clean, low pressure clear water can be accessed at larger bolt hole 8, recoil cleaning is carried out to screen casing.
When this screen casing is dismantled, back-out at the larger bolt hole 8 in 2 center of cover board four compared with imperial palace hexagonal spiral shell using specific purpose tool 9
Four larger hexagon socket head cap screws are screwed into cover board by four smaller hexagon socket head cap screws at bolt and the larger bolt hole 3 of 2 surrounding trunnion of cover board
It is using bolt that screen casing top is loose at the larger bolt hole 3 of 2 surrounding trunnions, then integrally proposed screen casing with handle 1.
The working principle of the invention is: the shale gas containing sand and water enters inner barrel from medium entrance in tangential direction,
Eddy flow centrifugal force is formed by the rotational flow guide device of setting, gravel is carried out to preliminary separation.
Shale gas containing sand and water and screen casing after initial gross separation are collided, and the separation accuracy of screen casing arrives for 0.05mm
0.25mm is adjustable, guarantees that the gravel for being greater than separation accuracy not can enter inside screen casing, while screen casing uses wedge structure, can avoid
The blocking of gravel.
By separating twice, the sand and water conservancy gravity isolated enter storage sand space can be improved point using Gravity Separation
From efficiency.
Equipment uses vertical structure, separates gravel using screen casing, is separated water using gravity, equipment medium
Outlet is arranged in the middle part of cylinder, and the water having more can be flowed out from media outlet, and screen casing is avoided to block.
Difference gauge using equipment inlet and outlet setting judges whether screen casing blocks, and two difference gauges are separately positioned on desander
Import and export achievees the purpose that accurate sediment outflow opportunity.
Resolution element uses boxing stainless steel screen casing, and precision is adjustable in 0.05mm to 0.25mm, is arranged by itself one end
The bolt connecting device setting of wedge structure and O-ring seal and the other end handle is set at the top of inner barrel, screen casing,
Facilitate the installation of screen casing.
The novel three-in-one vertical grit catcher of this shale gas, the technology of eddy flow, filtering, Gravity Separation is combined, and is improved
The separative efficiency of gravel, effectively protects the equipment in downstream and the even running of pipeline in shale gas, extends system inspection
Maintenance period is repaired, solves existing equipment low separation efficiency, operability is poor, causes high risks to ask downstream line and equipment
Topic, there is high Social benefit and economic benefit.
Claims (10)
1. a kind of three-in-one vertical grit catcher, it is characterised in that: including fast opening blind and vertical cylinder, in the vertical cylinder
Medium entrance is arranged in portion, and media outlet is arranged in middle part, and lower part setting recoil mouth, sand removing hole is arranged in bottom；In the vertical cylinder
Inside setting screen casing, the screen casing top are connected with vertical cylinder top, and screen casing lower part is connect with media outlet；The medium into
Mouth is the medium entrance of tangent line air inlet, and rotational flow guide device is arranged at medium entrance, in the lower part of media outlet setting storage sand
Conical hopper is arranged below storage sand space in space；Import difference gauge is set at medium entrance, and it is poor that mouth is set out at media outlet
Pressure meter.
2. three-in-one vertical grit catcher according to claim 1, it is characterised in that: the screen casing is boxing stainless steel sieve
Pipe, is arranged cover board at the top of screen casing, and cover board surrounding is provided with trunnion, a larger bolt hole is bored on each trunnion, vertical
Inner barrel corresponding position sets four supporting plates, bores a lesser bolt hole on each supporting plate, passes through four smaller interior hexagonal spiral shell
Screen casing is fixed on inside vertical cylinder by bolt.
3. three-in-one vertical grit catcher according to claim 2, it is characterised in that: in cover plate central setting, there are four larger
Bolt hole.
4. three-in-one vertical grit catcher according to claim 2, it is characterised in that: the screen casing bottom passes through wedge shape connection
Part and O-ring seal and media outlet are tightly connected.
5. three-in-one vertical grit catcher according to claim 2, it is characterised in that: be provided with handle on the cover board of screen casing
Hand.
6. three-in-one vertical grit catcher according to claim 1, it is characterised in that: be internally provided with reinforcing ring in screen casing.
7. three-in-one vertical grit catcher according to claim 6, it is characterised in that: be provided with cross-shaped on reinforcing ring
Support.
8. a kind of sand removing process using three-in-one vertical grit catcher described in claim 1, it is characterised in that: in following
Hold:
One, the shale gas containing sand and water enters inner barrel from medium entrance in tangential direction, is oriented to dress by the eddy flow of setting
It sets to form eddy flow centrifugal force, gravel is carried out to preliminary separation；Shale gas containing sand and water and screen casing after initial gross separation carry out
Collision, the gravel greater than separation accuracy not can enter inside screen casing, by separating twice, the sand and water conservancy gravity isolated into
Enter to store up sand space；The water having more is flowed out from media outlet；
Two, judge whether screen casing blocks using two difference gauges that desander import and export is arranged in, shown when by differential manometer
When screen casing inside and outside differential pressure is larger, illustrate that screen casing needs to clean, low pressure is accessed at the larger bolt hole of screen casing cover plate central setting
Clear water carries out recoil cleaning to screen casing；
Three, when carrying out sediment outflow operation, the mouth that recoils is from low pressure water is connect in the space Chu Sha of cylinder lower part in the separator in downstream
Gravel is rinsed, and the gravel after flushing is discharged using gravity from sand removing hole.
9. the sand removing process of three-in-one vertical grit catcher according to claim 8, it is characterised in that: screen casing cover plate central is set
The bolt hole set is used as balance port to use at work: when desander water is larger, bolt hole being kept to open；When desander is transported
When row is steady, bolt hole is sealed using the larger hexagon socket head cap screw of configuration.
10. the sand removing process of three-in-one vertical grit catcher according to claim 9, it is characterised in that: when disassembly screen casing, benefit
Back-out at cover plate central four lesser hexagon socket head cap screws at four biggish hexagon socket head cap screws and trunnion with extracting tool, by four
A larger hexagon socket head cap screw is screwed at branch lug bolt holes, using bolt that screen casing top is loose, then is integrally proposed screen casing with handle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811422550.7A CN109432877A (en) | 2018-11-27 | 2018-11-27 | Three-in-one vertical grit catcher and sand removing process |
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| CN201811422550.7A CN109432877A (en) | 2018-11-27 | 2018-11-27 | Three-in-one vertical grit catcher and sand removing process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026012A (en) * | 2019-05-30 | 2019-07-19 | 江苏一仲石油装备有限公司 | A kind of integral type desander |
| CN110130868A (en) * | 2019-05-20 | 2019-08-16 | 中国石油工程建设有限公司 | A kind of shale gas desanding separation system and method |
| CN113482580A (en) * | 2021-07-27 | 2021-10-08 | 四川华宇石油钻采装备有限公司 | Vertical filtering desander suitable for high-pressure environment |
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| CN108612513A (en) * | 2018-05-24 | 2018-10-02 | 新疆中元天能油气科技股份有限公司 | Desander |
| CN209646025U (en) * | 2018-11-27 | 2019-11-19 | 中国石油工程建设有限公司 | Three-in-one vertical grit catcher |
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|---|---|---|---|---|
| CN206158690U (en) * | 2016-11-22 | 2017-05-10 | 四川科宏石油天然气工程有限公司 | Shale gas well station desander |
| CN206917646U (en) * | 2017-05-22 | 2018-01-23 | 成都汇川新能科技有限公司 | A kind of vertical type backwashing desander |
| CN108612513A (en) * | 2018-05-24 | 2018-10-02 | 新疆中元天能油气科技股份有限公司 | Desander |
| CN209646025U (en) * | 2018-11-27 | 2019-11-19 | 中国石油工程建设有限公司 | Three-in-one vertical grit catcher |
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