CN204522835U - Stirring tank - Google Patents
Stirring tank Download PDFInfo
- Publication number
- CN204522835U CN204522835U CN201420872044.9U CN201420872044U CN204522835U CN 204522835 U CN204522835 U CN 204522835U CN 201420872044 U CN201420872044 U CN 201420872044U CN 204522835 U CN204522835 U CN 204522835U
- Authority
- CN
- China
- Prior art keywords
- agitator tank
- space
- housing
- baffle plate
- agitator
- 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 - Fee Related
Links
- 238000003756 stirring Methods 0.000 title claims abstract description 20
- 239000002245 particle Substances 0.000 claims abstract description 40
- 239000007787 solid Substances 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims description 17
- 210000002837 heart atrium Anatomy 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 8
- 239000003814 drug Substances 0.000 abstract description 18
- 239000000243 solution Substances 0.000 abstract description 15
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 description 23
- 206010000496 acne Diseases 0.000 description 19
- 239000007788 liquid Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002904 solvent Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003129 oil well Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000006193 liquid solution Substances 0.000 description 2
- 238000010794 Cyclic Steam Stimulation Methods 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The utility model discloses an agitator tank, it includes: a housing having an interior cavity; the baffle is fixedly arranged in the shell, a plurality of holes are formed in the baffle, the baffle divides an inner cavity of the shell into a first space and a second space, and a feed inlet communicated with the first space and a discharge outlet communicated with the second space are formed in the shell; a motor disposed on the housing; the transmission shaft is in transmission connection with the motor and extends into the first space in the shell; and the stirring device is in transmission connection with the transmission shaft and is arranged in the first space in the shell. This agitator tank is through setting up the baffle that has the hole, and the bold hard lump that exists in with the solution is broken for solid particle class drier homodisperse in the final outflow solution has guaranteed the medicament quality and has avoided the damage of injection pump.
Description
Technical field
The utility model relates to petroleum production engineering field, particularly a kind of agitator tank.
Background technology
Oil well cyclic steam stimulation, steam driving exploitation, waterflooding extraction process be medium-term and long-term is subject to washing away of steam and water filling, due to permeability contrast between reservoir, cause defining a large amount of macropores between oil well and oil well, between well and oil well, steam or water are along macropore fingering, oil reservoir is caused to employ inequality in longitudinal direction and plane, steam soak, steam flooding and waterflooding effect are deteriorated, and have a strong impact on the exploitation of oil well.For these problems, can effectively solve the contradiction existed in above-mentioned oil development by water plugging and profile controlling transfer drive technology, make water plugging and profile controlling transfer drive complete sets of Techniques technique obtain large-scale promotion application at the scene.
For reaching, effective shutoff is carried out to macropore, water plugging and profile controlling transfer drive complete sets of Techniques technique needs to prepare the liquid medicine of variable concentrations at the scene in work progress and is divided into several slug and injects, especially in rearmounted slug, need the consumption and the concentration that increase medicament, the a high proportion of solid particle class of mixture does agent simultaneously, could set up shutoff pressure in well like this, obtain better water plugging and profile controlling profile modification.But in process for preparation, it is very big that solid particle class does agent consumption, sometimes even reaches tens tons, liquid dispensing device specification major part in existing water plugging and profile controlling transfer drive complete sets of Techniques system is so made to be the large-scale cuboid agitator tank of 7m*2.2m*2.4m.When solid particle in preparating liquid solution do agent ratio higher time; dead angle area is formed because agitating device stirs range limited; simultaneously solid particle class is done agent and can not be dispersed in liquid medicine; solid particle can be piled up at the bottom of tank or dead angle area is piled up; the concentration of the liquid medicine flowed out is reduced, and then affects the plugging effect of liquid medicine.Be deposited at the bottom of tank or the solid particle at dead angle slowly can flock together, form the hard pimple of the bulk with some strength, once when the hard pimple of bulk flows into injection pump by agitator tank outlet with pipeline, injection pump likely can be made to damage or directly block, continuation operation cannot be carried out, take off as operating personnel can be added in the case labour intensity and the working time that pump repaiied by pump, have impact on the progress of site operation.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model there is provided a kind of agitator tank, and it is dispersed that it can make solid particle class in the liquid medicine flowed out in agitator tank do agent.
Concrete technical scheme of the present utility model is:
A kind of agitator tank, it is characterized in that, it comprises: the housing with inner chamber; Be fixedly installed on the baffle plate in described housing, described baffle plate offers multiple eyelet, the inner chamber of described housing is divided into the first space and second space by described baffle plate, and described housing is provided with the charging aperture be connected with described first space and the discharging opening be connected with described second space; Be arranged at the motor on described housing; Be in transmission connection mutually with described motor and stretch into the power transmission shaft in described housing in the first space; Be in transmission connection mutually with described power transmission shaft and be arranged on the agitating device in the first space in described housing.
Preferably, described housing is cuboid, has the chamfering of arc-shaped between described case inside wall.
Preferably, the eyelet on described baffle plate is triangular in shape.
Preferably, when dropping into the solid particle class in agitator tank to do agent particle size range being 50 to 100 order number, described Atria limit is of a size of 1cm; When to do agent particle size range be 100 to 200 order number to solid particle class, described Atria limit is of a size of 0.5cm; When to do agent particle size range be 200 to 400 order number to solid particle class, described Atria limit is of a size of 0.3cm.
Preferably, the madial wall of described housing is provided with the chute extended longitudinally, in described chute, is provided with the described baffle plate longitudinally slided.
Preferably, described baffle plate comprises framework and is arranged on the screen pack in described framework, and described framework is made up of two side frames and upper side frame.
Preferably, described hull outside wall is fixed with multiple suspension ring, and described suspension ring are connected with described framework by rope.
Preferably, described agitating device comprises upper mixer and lower floor's agitator, and the stirring scope diameter of the stirrer paddle of described lower floor agitator is greater than the stirring scope diameter of the stirrer paddle of described upper mixer.
Preferably, described upper mixer is positioned at the middle part of described housing, and described lower floor agitator is positioned at the bottom of described housing.
The utility model has following remarkable beneficial effect:
1, the utility model agitator tank is provided with the perforated baffle plate of band within it in chamber, its inner chamber is divided into the first space and second space, stirring vane is provided with in first space, discharging opening is connected with second space, when the solution in the first space needs to discharge to discharging opening, baffle plate must be passed through, baffle plate is by broken for the hard pimple of bulk that may exist in solution, it is made to disperse in the solution, making finally to flow out solid particle class in solution, to do agent dispersed, ensures pharmacy quality and avoid the damage of injection pump.
2, do agent granule size according to solid particle class in dosage component, have chosen the eyelet of different size, when varigrained solid particle class do agent formed the hard pimple of bulk by baffle plate time, crushing effect is better.
3, add curved plate between the sidewall of this agitator tank and sidewall, reduce the dead angle area in agitator tank, effectively prevent the solid particle in the solvent in agitator tank from depositing in the corner of sidewall, and form hard pimple.
4, the double-layer paddle agitator be provided with in agitator tank, upper mixer is positioned at the middle part of agitator tank, effectively solvent is stirred, lower floor's agitator is positioned at bottom agitator tank, blade is longer, and blade is close to diapire, the solvent of bottom in agitator tank is fully stirred, makes solid particle cannot form hard pimple at agitator tank bottom deposit.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 is the side view of the utility model agitator tank.
Fig. 2 is the top view of the utility model agitator tank.
Fig. 3 is the structural representation of baffle plate in the utility model agitator tank.
The Reference numeral of above accompanying drawing:
1, housing; 11, discharging opening; 12, charging aperture; 13, steel plate, 14, protection network; 15, protection network breach; 16, curved plate; 17, shoulder guard; 2, motor; 3, power transmission shaft; 4, agitating device; 41, upper mixer; 42, lower floor's agitator; 5, baffle plate; 51, framework; 52, hanger; 53, screen pack; 6, explosion-proof electrical distribution box; 7, level monitor; 8, suspension ring.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technical staff can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
A kind of agitator tank, it comprises: the housing 1 with inner chamber; Be fixedly installed on the baffle plate 5 in housing 1, baffle plate 5 offers multiple eyelet, the inner chamber of housing 1 is divided into the first space and second space by baffle plate 5, and housing 1 is provided with the charging aperture 12 be connected with the first space and the discharging opening 11 be connected with second space; Be arranged at the motor 2 on housing 1; Be in transmission connection mutually with motor 2 and penetrate the power transmission shaft 3 in housing 1 in first space; Be in transmission connection mutually with power transmission shaft 3 and be arranged on the agitating device 4 in the first space in housing 1.
In the present embodiment, Fig. 1 is the side view of the utility model agitator tank, and as shown in Figure 1, the housing 1 of agitator tank is formed by stainless steel welded.Agitator tank inner cavity size specification is the cuboid container of long 1.2m* wide 1m* height 1m, and the dimensional values in present embodiment just conveniently explains the general proportions relation illustrated between each several part, and it does not specifically represent a certain fixed numbers.In agitator, vertical direction is provided with baffle plate 5, the inner chamber of housing 1 is divided into the first space and second space by baffle plate 5, and the first space is of a size of long 1m* wide 1m* height 1m, and the dimensions of second space is long 1m* wide 0.2m* height 1m.Baffle plate 5 offers many fine and closely woven eyelets, be connected with second space to make the first space.The square region in the first space is used for the stirring of liquid medicine, and second space is used for storing the uniform doses solution be stirred in the first space.Housing 1 is provided with the charging aperture 12 be connected with the first space and the discharging opening 11 be connected with second space, and charging aperture 12 and the pipeline of discharging opening 11 are provided with butterfly valve to control.Fig. 2 is the top view of the utility model agitator tank, as shown in Figure 2, the top of agitator tank housing 1 can be opening-like, the housing 1 in the first top, space is welded with a steel plate 13, on steel plate 13, tiling is provided with motor 2, motor 2 is in transmission connection mutually with power transmission shaft 3, and power transmission shaft 3 penetrates in the first space of housing 1 inside, is provided with the agitating device 4 be in transmission connection mutually with power transmission shaft 3 in the first space.The remainder of the upper opening of agitator tank housing 1 is provided with the protection network 14 with protection network breach 15, and acting as of protection network breach 15 conveniently does agent to agitator tank inside interpolation solid particle class.
Agitating device 4 is double-layer paddle agitator, comprise upper mixer 41 and lower floor's agitator 42, upper mixer 41 and lower inferior agitator all have three stirrer paddles, mutual angle between stirrer paddle is 120 degree, and the stirring scope diameter of the stirrer paddle of lower floor's agitator 42 is greater than the stirring scope diameter of the stirrer paddle of upper mixer 41.The diameter of upper mixer 41 is 80cm, the height of upper mixer 41 is positioned at the middle part of housing 1, and upper mixer 41 is 45cm apart from tank deck distance, and lower floor's agitator 42 diameter is 95cm, lower floor's agitator 42 is positioned at the bottom of housing 1, and at the bottom of lower floor's agitator 42 to tank, distance is 5cm.The diameter of upper mixer 41 is relatively little, and so, when agitator tank stirs, the linear velocity of upper mixer 41 is relatively little, and upper mixer 41 has certain distance to agitator tank top simultaneously, can prevent liquid solution from splashing tank and pollute on-the-spot surrounding environment outward.Lower floor's agitator 42 diameter is relatively large, so, when agitator tank stirs, the linear velocity of lower floor's agitator 42 is larger, wider liquid can be promoted, lower floor's agitator 42 distance at the bottom of tank is very near simultaneously, fully can stir agitator tank bottom liquid medicine, prevents the solid particle class of bottom from doing agent and forms the hard pimple of bulk, making solid particle class do agent is dispersed in liquid medicine, realizes the uniform stirring of liquid medicine in tank body, does not pile up.
Operation principle of the present utility model is as follows:
First, the material that needs stir is added in agitator tank, general liquid can add from charging aperture 12, solid particle class is done agent and can directly be added by the protection network breach 15 above housing 1, after material adds the first space " Agitation Tank ", open agitator tank motor 2, motor 2 drives double-layer paddle agitator to stir material by power transmission shaft 3.Because material is that the dry agent solution of fraction solid particulate species increased by high concentration medicament, even if under double-layer paddle agitator stirring action, it still there will be the hard pimple of bulk.When oil well operation needs the solution stirred, open discharging opening 11 and use to carry out discharge, discharging opening 11 is connected with second space.Now, due to the existence of baffle plate 5, and baffle plate 5 offers many fine and closely woven eyelets, effectively prevent the hard pimple of bulk in the first space and enter second space and discharge.Secondly, in whipping process, the bulk pimple formed in first space is when by baffle plate 5, owing to being subject to the impact of fine and closely woven cell structure, under the effect of baffle plate 5, bulk pimple is fractured into tiny graininess and is dispersed in liquid medicine and flows to second space, if bulk pimple is not broken, then it still rests in the first space and continues to be stirred.So, solve the problem that discharging opening 11 there will be bulk pimple, ensure that the solution concentration flowed out in discharging opening 11 is even, do not have block pimple and enter injection pump with pipeline and cause injection pump to damage.Because the amount of solution used in water plugging and profile controlling transfer drive technology is huge, in whole whipping process, be generally discharging on one side, charging on one side, circulation like this is continuous, by being provided with perforated baffle plate 5 structure of band, ensure that the concentration of the liquid medicine of the middle discharge of whole process is in a controlled homogeneity range, and can the stirring discharging of continuation.
The utility model agitator tank is provided with the perforated baffle plate 5 of band within it in chamber, inner chamber is divided into the first space and second space by baffle plate 5, agitating device 4 is provided with in first space, discharging opening 11 is connected with second space, when the solution in the first space needs to discharge to discharging opening 11, baffle plate 5 must be passed through, hard for the bulk that may exist in solution pimple is smashed by baffle plate 5, it is made to disperse in the solution, making finally to flow out solid particle class in solution, to do agent dispersed, ensures pharmacy quality and prevent injection pump from damaging.The double-layer paddle agitator be provided with in agitator tank, upper mixer 41 is positioned at the middle part of agitator tank, effectively solvent is stirred, lower floor's agitator 42 is positioned at bottom agitator tank, blade is longer, and blade is close to diapire, the solvent of bottom in agitator tank is fully stirred, makes solid particle cannot form hard pimple at agitator tank bottom deposit.
In one preferably embodiment, Fig. 3 is the structural representation of baffle plate 5 in the utility model agitator tank, and as shown in Figure 3, baffle plate 5 comprises framework 51 and is arranged on the screen pack 53 in framework 51.Framework 51, in square, the madial wall of housing 1 is provided with the chute extended longitudinally, is provided with the baffle plate 5 longitudinally slided in chute, to make baffle plate 5, housing 1 inner chamber is divided into the first space and second space.Four side angles of agitator tank lateral wall are fixed with suspension ring 8, suspension ring 8 are in L-type, and the top of framework 51 is fixedly connected with two hangers 52, is connected between suspension ring 8 and hanger 52 by rope, so, steel shoe 5 can pull out agitator tank to carry out cleaning filter net 53 in time by rope.
In the preferred embodiment of one, framework 51 is made up of two side frames and upper side frame, the bottom of framework 51 is not provided with frame, when framework 51 inserts in agitator tank chute, screen pack 53 fixing on framework 51 directly contacts with the diapire of agitator tank, avoid the dead angle area that the lower frame of framework 51 and agitator tank diapire form right angle, decrease the possibility forming hard pimple in agitator tank.
In a preferred embodiment, the eyelet shape on baffle plate 5 is triangular in shape.When to do agent particle size range be 50 to 100 order number to solid particle class, Atria limit is of a size of 1cm; When to do agent particle size range be 100 to 200 order number to solid particle class, Atria limit is of a size of 0.5cm; When to do agent particle size range be 200 to 400 order number to solid particle class, little Atria limit is of a size of 0.3cm.When solid particle class does agent change of granularity, on baffle plate 5, the size of eyelet is also corresponding has done adjustment and measurement, play crushing effect to do to solid particle class the block pimple that agent formed further, and make broken after the solvent that formed of fine particle meet job requirements.Through test, find that above-mentioned corresponding size assortment crushing effect is ideal, the final solvent uniformity formed is better.
In a preferred embodiment, when housing 1 constructs for integral type, there is between the sidewall of its inside and sidewall the chamfering of arc-shaped.When housing 1 is cuboid, during for being welded, curved plate 16 can be welded at the sidewall of housing 1 with the rectangular area between sidewall, making between adjacent wall in circular arc chamfering.When the sidewall of housing 1 is provided with chute, also in circular arc chamfering between chute and sidewall.So, the first space in housing 1 in being similar to cylindrical container, the uniform stirring of the liquid medicine advantageously in agitator tank.What the dead angle area in the first space and second space was talked about most obtains reduction, further reduces in corner because the possibility of the hard pimple of bulk appears in deposition.
In a preferred embodiment, the outer upper ends of agitator tank is welded with the shoulder guard of thickening, be welded with bracing frame below shoulder guard, shoulder guard can ensure pouring in order of medicament as the region storing medicament, thus improve efficiency of construction; Agitator tank exterior side wall is fixed with level monitor 7 simultaneously, operating personnel can directly in the inner liquid medicine liquid level of agitator tank External Observation agitator tank, directly add solid particle class by the valve and housing 1 top controlling charging aperture 12 and do agent, maintain the balance of material in whole agitator tank, and then keep continuation discharging.This agitator tank sidewall is provided with explosion-proof electrical distribution box 6 outward simultaneously, in order to ensure that the smooth of site operation and safety.
Each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (9)
1. an agitator tank, is characterized in that, it comprises: the housing with inner chamber; Be fixedly installed on the baffle plate in described housing, described baffle plate offers multiple eyelet, the inner chamber of described housing is divided into the first space and second space by described baffle plate, and described housing is provided with the charging aperture be connected with described first space and the discharging opening be connected with described second space; Be arranged at the motor on described housing; Be in transmission connection mutually with described motor and stretch into the power transmission shaft in described housing in the first space; Be in transmission connection mutually with described power transmission shaft and be arranged on the agitating device in the first space in described housing.
2. agitator tank according to claim 1, is characterized in that, described housing is cuboid, has the chamfering of arc-shaped between described case inside wall.
3. agitator tank according to claim 1, is characterized in that, the eyelet on described baffle plate is triangular in shape.
4. agitator tank according to claim 3, is characterized in that, when dropping into the solid particle class in described agitator tank to do agent particle size range being 50 to 100 order number, described Atria limit is of a size of 1cm; When to do agent particle size range be 100 to 200 order number to solid particle class, described Atria limit is of a size of 0.5cm; When to do agent particle size range be 200 to 400 order number to solid particle class, described Atria limit is of a size of 0.3cm.
5. agitator tank according to claim 1, is characterized in that, the madial wall of described housing is provided with the chute extended longitudinally, and is provided with the described baffle plate longitudinally slided in described chute.
6. agitator tank according to claim 5, is characterized in that, described baffle plate comprises framework and is arranged on the screen pack in described framework, and described framework is made up of two side frames and upper side frame.
7. agitator tank according to claim 6, is characterized in that, described hull outside wall is fixed with multiple suspension ring, and described suspension ring are connected with described framework by rope.
8. agitator tank according to claim 1, it is characterized in that, described agitating device comprises upper mixer and lower floor's agitator, and the stirring scope diameter of the stirrer paddle of described lower floor agitator is greater than the stirring scope diameter of the stirrer paddle of described upper mixer.
9. agitator tank according to claim 8, is characterized in that, described upper mixer is positioned at the middle part of described housing, and described lower floor agitator is positioned at the bottom of described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872044.9U CN204522835U (en) | 2014-12-31 | 2014-12-31 | Stirring tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420872044.9U CN204522835U (en) | 2014-12-31 | 2014-12-31 | Stirring tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204522835U true CN204522835U (en) | 2015-08-05 |
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ID=53736890
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420872044.9U Expired - Fee Related CN204522835U (en) | 2014-12-31 | 2014-12-31 | Stirring tank |
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| Country | Link |
|---|---|
| CN (1) | CN204522835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492322A (en) * | 2014-12-31 | 2015-04-08 | 中国石油天然气股份有限公司 | Stirring tank |
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2014
- 2014-12-31 CN CN201420872044.9U patent/CN204522835U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492322A (en) * | 2014-12-31 | 2015-04-08 | 中国石油天然气股份有限公司 | Stirring tank |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |