CN115958695B - Ultrasonic mechanical composite vibration cement paste stirring and mixing system - Google Patents
Ultrasonic mechanical composite vibration cement paste stirring and mixing system Download PDFInfo
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- CN115958695B CN115958695B CN202211673047.5A CN202211673047A CN115958695B CN 115958695 B CN115958695 B CN 115958695B CN 202211673047 A CN202211673047 A CN 202211673047A CN 115958695 B CN115958695 B CN 115958695B
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- 239000004568 cement Substances 0.000 title claims abstract description 263
- 238000003756 stirring Methods 0.000 title claims abstract description 141
- 238000002156 mixing Methods 0.000 title claims abstract description 134
- 239000002131 composite material Substances 0.000 title claims abstract description 57
- 239000002002 slurry Substances 0.000 claims abstract description 194
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 33
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 25
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000009692 water atomization Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000013329 compounding Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005381 potential energy Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000009472 formulation Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a cement paste stirring and mixing system with ultrasonic mechanical composite vibration, belonging to the technical field of well cementation of oil wells. The cement paste preparation input system comprises a high-energy mixer, a cement paste driving vibration stirring device and a guide pipe; the cement slurry driving vibration stirring device is respectively connected with the high-energy mixer and the guide pipe through threads; the mixing tank stirring system comprises a composite vibration stirring device, a first bevel gear, a second bevel gear, a transmission shaft, a speed reducer, a motor and a mixing tank platform; the slurry mixing tank platform is provided with a cement slurry output pipeline, a motor bracket and a slurry mixing tank; the vibration isolation device comprises a well cementation cement slurry prying platform, a vibration isolation spring and a spring guide rod; the upper end face of the well cementation cement slurry prying platform is provided with a cylindrical groove which enables the spring guide rod to slide in the vertical direction. The invention improves the stirring efficiency and quality, and ensures that the stirring is more sufficient; the potential energy of cement paste is fully utilized, and the electric energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of oil well cementation, in particular to a cement paste stirring and mixing system with ultrasonic mechanical composite vibration.
Background
Cementing is an essential element in the process of drilling and completing well. The construction of running a casing into a well and injecting cement slurry into the annulus between the wellbore and the casing is referred to as cementing. Along with the development of oil gas gradually towards deep wells and ultra-deep wells, excellent well cementation quality is a key link for ensuring the safety and high efficiency of drilling. The cement slurry mixing system is used as a core component on the well cementation sled, and the uniformity of the outlet cement slurry directly determines the well cementation quality. The existing developed mixing system has the problems of solid phase deposition, uneven mixing density, insufficient slurry mixing capability and the like of cement slurry, so that a composite vibration cement slurry mixing system is required to be designed, the bubbles in the cement slurry are further removed, the mixing uniformity and the mixing efficiency of the cement slurry are improved, and the method has considerable economic value and important engineering significance.
Disclosure of Invention
The invention aims to provide a cement paste stirring and mixing system with ultrasonic mechanical composite vibration.
The ultrasonic mechanical composite vibration cement paste stirring and mixing system is characterized by comprising a cement paste preparation input system, a cement paste mixing pool stirring system and a vibration isolation device;
the cement slurry preparation input system comprises a first high-energy mixer, a first cement slurry vibration-driving mixer and a first guide pipe; the first cement paste vibration-driving stirrer is respectively connected with the first high-energy mixer and the first guide pipe through threads;
the slurry mixing tank stirring system comprises a first composite vibration stirring device, a first bevel gear, a second bevel gear, a first transmission shaft, a first speed reducer, a first motor and a first slurry mixing tank platform; the first slurry mixing tank platform is provided with a first cement slurry output pipeline, a first motor bracket and a slurry mixing tank; the first composite vibration stirring device is connected with the first bevel gear through a key, the first bevel gear is matched with the second bevel gear through a bevel gear, the second bevel gear is connected with the first transmission shaft through a key, the first transmission shaft is connected with the first speed reducer through a coupler, and the first speed reducer is connected with the first motor through an external coupler; the first motor is in surface contact with the first motor bracket, and the slurry mixing tank is connected with the first composite vibration stirring device through a bolt;
the vibration isolation device comprises a first well cementation cement slurry prying platform, a first vibration isolation spring and a first spring guide rod; the upper end face of the first well cementation cement slurry prying platform is provided with a cylindrical groove along the vertical direction, so that the first spring guide rod slides in the first well cementation cement slurry prying platform; the upper end face of the first spring guide rod is fixedly connected to the bottom of the slurry mixing tank, the lower end face of the first spring guide rod is in contact with a cylindrical groove of the upper end face of the first well cementation cement slurry prying platform, and the first vibration isolation spring is sleeved outside the first spring guide rod.
The first high-energy mixer comprises a first clear water atomization spray gun, a first ash inlet pipeline and a first mixing cavity;
the side wall of the first ash inlet pipeline is provided with a circular through hole; the outer cylindrical surface of the first clear water atomization spray gun is contacted with the inner cylindrical surface of the circular through hole of the first ash inlet pipeline, and is inserted into the first ash inlet pipeline to be communicated with the first mixing cavity.
The first cement paste vibration-driving stirrer comprises a first sleeve shell, a first upper supporting plate, a first stirring shaft, a first eccentric blade and a first lower supporting plate;
upper and lower annular supporting bosses are respectively arranged on two sides of the inner wall of the first sleeve shell, and circular through holes are respectively arranged on the first upper supporting plate and the first lower supporting plate; the first sleeve shell is connected with the first mixing cavity through threads, the upper end face of the first upper supporting plate is in contact with the lower end face of the first mixing cavity, the lower end face of the first upper supporting plate is in contact with the upper end face of the annular supporting boss on the first sleeve shell, the first stirring shaft is connected with the first upper supporting plate and the first lower supporting plate through rolling bearings respectively, first eccentric blades with different masses are welded on the first stirring shaft, the upper end face of the first lower supporting plate is in contact with the upper end face of the annular supporting boss under the first sleeve shell, and the lower end face is in contact with the first guide pipe.
The first compound vibration stirring device comprises a first step transmission shaft, a first fixed guide rail frame, a first cement slurry stirrer, a first ultrasonic vibrator and a first threaded end cover;
rectangular sliding grooves are symmetrically formed in the first step transmission shaft, wavy curve sliding grooves are formed in the inner wall of the first fixed guide rail frame, cylindrical sliding blocks are symmetrically arranged at the upper end of the first cement slurry stirrer along the radial direction, a hollow structure is arranged inside the first cement slurry stirrer, and eccentric blades with different masses are arranged at the lower end of the first cement slurry stirrer; the first stepped transmission shaft is connected with the first bevel gear through a key, the stepped surface of the first stepped transmission shaft is contacted with the upper end surface of the first fixed guide rail frame, and the first fixed guide rail frame is fixedly connected with the slurry mixing tank through a bolt; the cylindrical sliding block on the first cement slurry stirrer is in sliding connection with the rectangular sliding groove on the first step transmission shaft, and the cylindrical sliding block on the first cement slurry stirrer is in sliding connection with the wavy curve sliding groove; the first ultrasonic vibrator is connected with the first cement paste stirrer through threads, a connecting wire of the first ultrasonic vibrator is led out through an upper end hole of the first stepped transmission shaft, and the first threaded end cover is connected with the first cement paste stirrer through threads.
The first ultrasonic vibrator comprises a screw, a rear cover plate, a ceramic plate, a copper electrode, a front cover plate, a large stud, an amplitude transformer and a small stud;
the rear cover plate and the front cover plate are connected with the screw through threads, the ceramic plate and the copper electrode are sleeved outside the screw, and the copper electrode and the front cover plate are in surface contact with the ceramic plate; the large double-end stud is in threaded connection with the front cover plate, the large double-end stud and the small double-end stud are both in threaded connection with the amplitude transformer, and the small double-end stud is in threaded connection with the inner wall of the first cement slurry stirrer.
The application method of the ultrasonic mechanical composite vibration cement paste stirring and mixing system is characterized by comprising the following steps of:
step 1: assembling an ultrasonic mechanical composite vibration cement paste stirring and mixing system;
step 2: the first ash feeding pipeline conveys dry cement ash to the first mixing cavity and mixes the dry cement ash with cement slurry sprayed by the first clear water atomization spray gun at high pressure in the first mixing cavity;
step 3: the first upper supporting plate and the first lower supporting plate are matched with the first stirring shaft to concentrically limit the first stirring shaft to the inside of the first sleeve shell, the first stirring shaft and the first eccentric blades with different masses form an eccentric impeller, the eccentric impeller is driven to rotate by high-pressure cement paste sprayed into the first high-energy mixer, and the eccentric impeller drives cement paste in the pipeline to vibrate, so that further slurry mixing is realized; a first conduit directs the cement slurry into a slurry mixing tank;
step 4: starting a first motor and a first ultrasonic vibrator, wherein the first motor transmits power to a first speed reducer through a coupler, the first speed reducer transmits power to a second bevel gear through a first transmission shaft, the second bevel gear transmits power to a first composite vibration stirring device through a first bevel gear, the first composite vibration stirring device is used for stirring cement paste through rotation of the first composite vibration stirring device, a copper electrode is connected with a high-frequency alternating current to generate high-frequency alternating voltage so as to generate high-frequency mechanical vibration through combined action with a ceramic plate, and a variable amplitude rod is used for expanding the generated high-frequency mechanical vibration and transmitting the vibration to a first cement paste stirrer through a small double-end stud; the first step transmission shaft rotates to drive the first cement paste stirrer to slide along a rectangular chute on the first step transmission shaft, so that the first cement paste stirrer slides along the axial direction, and meanwhile, the first step transmission shaft drives the first cement paste stirrer to slide along a wavy curve chute, so that the first cement paste stirrer rotates around the axis of the first step transmission shaft; the first cement paste stirrer drives the eccentric impeller on the first cement paste stirrer to vibrate through rotation and axial sliding, so that low-frequency vibration is transmitted to cement paste, and the self low-frequency vibration and stirring of the cement paste are realized; the first ultrasonic vibrator is contacted with the first cement paste stirrer to transfer vibration to the blade, so that high-frequency vibration is transferred to cement paste, and meanwhile, low-frequency vibration and high-frequency vibration of the cement paste are realized, so that cement paste is mixed more uniformly;
step 5: the first cement slurry output pipeline conveys cement slurry which is uniformly stirred to an inlet of a cement slurry injection pump, and meanwhile, the first vibration isolation spring realizes vibration isolation by sliding along a first spring guide rod to consume vibration energy.
The ultrasonic mechanical composite vibration cement paste stirring and mixing system is characterized by comprising a cement paste preparation input system, a cement paste mixing pool stirring system and a vibration isolation device;
the cement paste preparation input system comprises a second high-energy mixer and a second conduit; the second high-energy mixer is connected with the second conduit through threads;
the slurry mixing tank stirring system comprises a second cement slurry driving and vibrating stirrer, a second composite vibration stirring device, a third bevel gear, a fourth bevel gear, a second transmission shaft, a second speed reducer, a second motor and a second slurry mixing tank platform; a second cement slurry output pipeline, a second motor bracket, an upper slurry mixing tank and a lower slurry mixing tank are arranged on the second slurry mixing tank platform, and a conical boss is arranged at the center of the upper slurry mixing tank; the upper end face and the lower end face of the second cement paste vibration driving stirrer are fixedly connected with the upper slurry mixing tank and the lower slurry mixing tank respectively; the second composite vibration stirring device is connected with a third bevel gear through a key, the third bevel gear is matched with a fourth bevel gear through a bevel gear, the fourth bevel gear is connected with a second transmission shaft through a key, the second transmission shaft is connected with a second speed reducer through a coupling, the second speed reducer is connected with a second motor through an external coupling, the second motor is in surface contact with a second motor bracket, and a lower slurry mixing tank is connected with the second composite vibration stirring device through a bolt;
the vibration isolation device comprises a second well cementation cement slurry prying platform, a second vibration isolation spring and a second spring guide rod, wherein the upper end surface of the second well cementation cement slurry prying platform is provided with a cylindrical groove which enables the second spring guide rod to slide in the second well cementation cement slurry prying platform along the vertical direction; the upper end surface of the second spring guide rod is fixedly connected to the bottom of the lower slurry mixing tank, and the lower end surface is contacted with a cylindrical groove on the upper end surface of the second well cementation cement slurry prying platform; the second vibration isolation spring is sleeved outside the second spring guide rod.
The second cement paste vibration driving stirrer comprises a second sleeve shell, a second upper supporting plate, a second stirring shaft, a second eccentric blade, a second lower supporting plate and a connecting screw; the side wall of the second sleeve shell is provided with threaded through holes along the radial direction, a plurality of circular through holes are uniformly distributed on the second upper support plate and the second lower support plate along the axial direction, and the side wall of the second sleeve shell is provided with threaded grooves along the radial direction;
the upper end face and the lower end face of the second sleeve shell are welded with the upper slurry mixing tank and the lower slurry mixing tank respectively, the second upper supporting plate and the second lower supporting plate are connected with the second sleeve shell through connecting screws, the second stirring shaft is connected with the second upper supporting plate and the second lower supporting plate through rolling bearings, and second eccentric blades with different qualities are welded on the second stirring shaft.
The application method of the ultrasonic mechanical composite vibration cement paste stirring and mixing system is characterized by comprising the following steps of:
step B1: assembling an ultrasonic mechanical composite vibration cement paste stirring and mixing system;
step B2: spraying cement slurry into the second high-energy mixer at high pressure, primarily mixing the cement slurry with dry cement ash, and guiding the cement slurry into an upper slurry mixing tank through a second guide pipe;
step B3: the second upper supporting plate and the second lower supporting plate are matched with each other through a second stirring shaft, the second stirring shaft is concentrically limited in the second sleeve shell, the second stirring shaft and second eccentric blades with different masses form an eccentric impeller, and the second cement paste vibration driving stirrer drives the eccentric impeller to rotate through cement paste entering the upper slurry mixing tank to realize eccentric vibration in a pipeline, so that the cement paste is driven to vibrate for further slurry mixing;
step B4: the cement slurry enters a lower slurry mixing tank, a second motor is powered on and started, power is transmitted to a second speed reducer through a coupling, power is transmitted to a fourth bevel gear through a second transmission shaft, the fourth bevel gear transmits power to a second composite vibration stirring device through a third bevel gear, and the cement slurry is subjected to vibration stirring through eccentric vibration and up-and-down movement of a second cement slurry stirrer and ultrasonic vibration generated by a second ultrasonic vibrator;
step B5: the second cement slurry output pipeline conveys the uniformly stirred cement slurry to an inlet of a cement slurry injection pump; the second vibration isolation spring achieves vibration isolation by sliding along the second spring guide bar to dissipate vibration energy.
The invention has the beneficial effects that:
according to the invention, the stirring shaft is internally provided with the ultrasonic vibrators and the eccentric impellers are used, so that the ultrasonic vibrators vibrate in the stirring process, and the stirring efficiency and quality are improved; the stirrer moves along the axial direction while rotating, so that stirring is more sufficient; the cement paste driving stirring device is arranged, so that the potential energy of the cement paste is fully utilized, and the electric energy consumption can be reduced; the vibration isolation device can reduce the influence of the vibration of the system on the well cementation cement slurry prying platform.
Drawings
Fig. 1 is an overall structure diagram of a scheme of an ultrasonic mechanical composite vibration cement slurry stirring and mixing system.
Fig. 2 is an overall structure diagram of an initial position of a stirrer in a scheme of an ultrasonic mechanical composite vibration cement slurry stirring and mixing system.
Fig. 3 is an overall structure diagram of a scheme-a stirrer stirring process of the ultrasonic mechanical composite vibration cement slurry stirring and mixing system.
Fig. 4 is a partial cross-sectional view of a cement slurry formulation input system, a cement slurry stirring and blending system solution of ultrasonic mechanical composite vibration.
Fig. 5 is a cross-sectional view of the compound vibration stirring device.
Fig. 6 is an assembly view of the composite vibration stirring device.
Fig. 7 is a sectional view of the fixed rail frame.
Fig. 8 is a sectional view of an ultrasonic vibrator.
Fig. 9 is a diagram of a second integral structure of the scheme of the ultrasonic mechanical composite vibration cement slurry stirring and mixing system.
Fig. 10 is an overall structure diagram of the initial position of the second stirrer of the scheme of the ultrasonic mechanical composite vibration cement slurry stirring and mixing system.
Fig. 11 is an overall structure diagram of a cement slurry stirring and mixing system adopting ultrasonic mechanical composite vibration in the stirring process of a second stirrer.
Fig. 12 is a partial cross-sectional view of a cement slurry formulation input system of a cement slurry stirring and blending system scheme of ultrasonic mechanical composite vibration.
Fig. 13 is a partial cross-sectional view of a cement slurry driven vibratory mixing device of a cement slurry mixing and blending system scheme of ultrasonic mechanical composite vibration.
Detailed Description
The invention provides a cement paste stirring and mixing system with ultrasonic mechanical compound vibration, which is further described below with reference to the accompanying drawings and specific embodiments.
Fig. 1, fig. 2 and fig. 3 are respectively an overall structure diagram of a scheme of an ultrasonic mechanical composite vibration cement paste stirring and mixing system, an overall structure diagram of an initial position of a stirrer and an overall structure diagram of the stirring process of the stirrer, wherein the system comprises a cement paste preparation input system, a slurry mixing tank stirring system and a vibration isolation device;
the cement slurry preparation input system comprises a first high-energy mixer 1, a first cement slurry vibration-driving mixer 2 and a first guide pipe 3; the first high-energy mixer 1 is connected with the first cement paste vibration-driving stirrer 2 through threads, and the first cement paste vibration-driving stirrer 2 is connected with the first guide pipe 3 through threads; the first high-energy mixer 1 can spray cement slurry into the cement slurry through high pressure to realize preliminary slurry mixing of cement slurry and dry cement ash, the first cement slurry vibration driving stirrer 2 drives the eccentric impeller to rotate through high-pressure cement slurry in the first high-energy mixer 1 to realize eccentric vibration in the pipeline, further realize further uniform slurry mixing of cement slurry, and the first guide pipe 3 guides the cement slurry into the slurry mixing pool.
The slurry mixing tank stirring system comprises a first composite vibration stirring device 4, a first bevel gear 5, a second bevel gear 6, a first transmission shaft 7, a first speed reducer 8, a first motor 9 and a first slurry mixing tank platform 10, wherein a first cement slurry output pipeline 1001, a first motor support 1002 and a slurry mixing tank 1003 are arranged on the first slurry mixing tank platform 10; the first composite vibration stirring device 4 is connected with the first bevel gear 5 through a key, the first bevel gear 5 and the second bevel gear 6 are matched through bevel gears, the second bevel gear 6 is connected with the first transmission shaft 7 through a key, the first transmission shaft 7 is connected with the first speed reducer 8 through a coupling, the first speed reducer 8 is connected with the first motor 9 through an external coupling, the first motor 9 is in surface contact with the first motor bracket 1002, and the slurry mixing tank 1003 is connected with the first composite vibration stirring device 4 through a bolt; the first motor 9 starts to rotate by being powered on, and transmits power to the first speed reducer 8 through the coupler, the first speed reducer 8 transmits power to the second bevel gear 6 through the first transmission shaft 7, the second bevel gear 6 transmits power to the first composite vibration stirring device 4 through the first bevel gear 5, the first composite vibration stirring device 4 realizes stirring of cement paste through self rotation, and the first cement paste output pipeline 1001 conveys cement paste with uniform stirring to the inlet of a cement paste injection pump;
the vibration isolation device comprises a first well cementation cement slurry prying platform 11, a first vibration isolation spring 12 and a first spring guide rod 13, wherein a cylindrical groove capable of enabling the first spring guide rod 13 to slide in the first well cementation cement slurry prying platform 11 is arranged on the upper end face of the first well cementation cement slurry prying platform along the vertical direction; the upper end surface of the first spring guide rod 13 is fixedly connected to the bottom of the slurry mixing pool 1003, the lower end surface of the first spring guide rod is contacted with a groove on the upper end surface of the first well cementation cement slurry prying platform 11, and the first vibration isolation spring 12 is sleeved outside the spring guide rod; the first vibration isolation spring 12 achieves vibration isolation by sliding along the first spring guide bar 13 to consume vibration energy;
fig. 4 is a partial cross-sectional view of a cement slurry formulation input system, a cement slurry stirring and blending system solution of ultrasonic mechanical composite vibration.
The device comprises a first clear water atomization spray gun 101, a first ash inlet pipeline 102 and a first mixing cavity 103, wherein a circular through hole is formed in the side wall of the first ash inlet pipeline 102;
the outer cylindrical surface of the first clear water atomization spray gun 101 is contacted with the inner cylindrical surface of the circular through hole of the first ash inlet pipeline 102, and is inserted into the first ash inlet pipeline 102 and communicated with the first mixing cavity 103;
the first clean water atomizing spray gun 101 sprays cement slurry into the first mixing cavity 103 under high pressure, and the first ash inlet pipeline 102 conveys dry cement ash to the first mixing cavity 103 and mixes the dry cement ash with the cement slurry sprayed by the first clean water atomizing spray gun 101 in the first mixing cavity 103.
The cement paste formulation input system also comprises a first sleeve housing 201, a first upper support plate 202, a first stirring shaft 203, a first eccentric blade 204, and a first lower support plate 205; annular supporting bosses are respectively arranged on two sides of the inner wall of the first sleeve shell 201, and a plurality of circular through holes are uniformly distributed on the first upper supporting plate 202 and the first lower supporting plate 205;
the first sleeve shell 201 is connected with the first mixing cavity 103 through threads, the upper end face of the first upper supporting plate 202 is contacted with the lower end face of the first mixing cavity 103, the lower end face is contacted with the upper end face of the annular supporting boss on the first sleeve shell 201, the first stirring shaft 203 is connected with the first upper supporting plate 202 through a rolling bearing, the first eccentric blades 204 with different masses are distributed on the first stirring shaft 203 and fixedly connected with the first stirring shaft 203 through welding, the first lower supporting plate 205 is connected with the first stirring shaft 203 through a rolling bearing, the upper end face of the first lower supporting plate 205 is contacted with the upper end face of the annular supporting boss under the first sleeve shell 201, and the lower end face is contacted with the first guide pipe 3;
the first upper supporting plate 202 and the first lower supporting plate 205 are matched with the first stirring shaft 203, the first stirring shaft 203 is concentrically limited in the first sleeve shell 201, the first stirring shaft 203 and the first eccentric blades 204 with different masses form an eccentric impeller, the high-pressure cement slurry sprayed in the first high-energy mixer 1 drives the eccentric impeller to rotate, and further the eccentric impeller drives cement slurry in a pipeline to vibrate, so that further slurry mixing is realized.
Fig. 5 and 6 are a sectional view and an assembly view of the composite vibration stirring device, respectively. Fig. 7 is a cross-sectional view of a fixed rail housing, wherein the housing includes a first stepped drive shaft 401, a first fixed rail housing 402, a first grout stirrer 403, a first ultrasonic vibrator 404, a first threaded end cap 405; rectangular sliding grooves are symmetrically formed in the first step transmission shaft 401, wavy curve sliding grooves 40201 are formed in the inner wall of the first fixed guide rail frame 402, cylindrical sliding blocks are symmetrically arranged at the upper end of the first cement slurry stirrer 403 along the radial direction, a hollow structure is arranged inside the first cement slurry stirrer, and blades with different masses are eccentrically distributed at the lower end of the first cement slurry stirrer;
the first step transmission shaft 401 is connected with the first bevel gear 5 through keys, the step surface of the first step transmission shaft 401 is contacted with the upper end surface of the first fixed guide rail frame 402, the first fixed guide rail frame 402 is fixedly connected with the slurry mixing pool 1003 through bolts, a cylindrical sliding block on the first cement slurry stirrer 403 is slidably connected with a rectangular sliding groove on the first step transmission shaft 401, a cylindrical sliding block on the first cement slurry stirrer 403 is slidably connected with a wavy curve sliding groove 40201, the first ultrasonic vibrator 404 is in threaded connection with the first cement slurry stirrer 403, a connecting wire of the first ultrasonic vibrator 404 penetrates through a through hole at the upper end of the first step transmission shaft 401 to be led out, and the first threaded end cover 405 is in threaded connection with the first cement slurry stirrer 403;
the first step transmission shaft 401 rotates to drive the first cement paste stirrer 403 to slide along a rectangular chute on the first step transmission shaft 401, so that the first cement paste stirrer 403 is axially slid, meanwhile, the first cement paste stirrer 403 is driven to slide along a wavy curve chute 40201, the first cement paste stirrer 403 is rotated around the axis of the first cement paste stirrer, the first cement paste stirrer 403 moves up and down through rotation, drives the eccentric blade to vibrate, and then transmits low-frequency vibration to cement paste, so that the cement paste is simultaneously vibrated in low frequency and stirred, the first ultrasonic vibrator 404 transmits vibration to the blade through contact with the first cement paste stirrer 403, and then transmits high-frequency vibration to cement paste, so that the cement paste is simultaneously vibrated in high frequency, and further cement paste mixing is more uniform;
fig. 8 is a sectional view of an ultrasonic vibrator. The device comprises a screw 40401, a rear cover plate 40402, a ceramic plate 40403, a copper electrode 40404, a front cover plate 40405, a large stud 40406, a luffing rod 40407 and a small stud 40408;
the rear cover plate 40402 is in threaded connection with the screw 40401, the ceramic plate 40403 is sleeved outside the screw 40401, the copper electrode 40404 is in surface contact with the ceramic plate 40403, the front cover plate 40405 is in threaded connection with the screw 40401, the front cover plate 40405 is in surface contact with the ceramic plate 40403, the large stud 40406 is in threaded connection with the front cover plate 40405, the amplitude transformer 40407 is in threaded connection with the stud one 40406, the amplitude transformer 40407 is in threaded connection with the small stud 40408, and the small stud 40408 is in threaded connection with the inner wall of the first cement slurry stirrer 403;
the copper electrode 40404 generates a high-frequency alternating voltage by switching in a high-frequency alternating current, and then cooperates with the ceramic plate 40403 to generate high-frequency mechanical vibration, and the amplitude transformer 40407 expands the generated vibration and transmits the vibration to the first cement paste mixer 403 through the small stud 40408.
The application method of the cement paste stirring and mixing system adopting ultrasonic mechanical composite vibration comprises the following steps:
step one: assembling the device;
step two: starting the first motor 9 and the first ultrasonic vibrator 404 to perform blanking of dry cement ash and pumping of cement slurry;
step three: the dry cement and the cement slurry are mixed by a first high-energy mixer 1 and are driven by high-pressure cement slurry to rotate by an eccentric impeller to perform first vibration stirring;
step four: the cement paste is conveyed to a paste mixing tank 1003 and is subjected to secondary vibration stirring by eccentric vibration generated by a first cement paste stirrer 403 and ultrasonic vibration generated by a first ultrasonic vibrator 404 by moving up and down;
and finally, the cement slurry is output to the inlet of the cement injection slurry pump through the first cement slurry output pipeline 1001, and the output cement slurry is fully mixed through multiple eccentric vibration stirring and ultrasonic vibration stirring, so that the stirring effect is improved, and the cement slurry quality is better.
Fig. 9, fig. 10 and fig. 11 are respectively an overall structure diagram of a scheme two of the ultrasonic mechanical composite vibration cement slurry stirring and mixing system, an overall structure diagram of an initial position of a stirrer and an overall structure diagram of the stirring process of the stirrer. The device comprises a cement slurry preparation input system, a slurry mixing pool stirring system and a vibration isolation device;
the cement paste preparation input system comprises a second high-energy mixer A1 and a second conduit A3; the second high-energy mixer A1 is connected with the second conduit A3 through threads; the second high-energy mixer A1 can realize preliminary mixing of cement slurry and dry cement ash by high-pressure spraying of cement slurry, and the second guide pipe A3 guides cement slurry into the upper mixing tank A1003.
The mixing pool stirring system comprises a second cement paste vibration driving stirrer A2, a second composite vibration stirring device A4, a third bevel gear A5, a fourth bevel gear A6, a second transmission shaft A7, a second speed reducer A8, a second motor A9 and a second mixing pool platform A10, wherein the second composite vibration stirring device A4 comprises a second stepped transmission shaft A401, a second fixed guide rail frame A402, a second cement paste stirrer A403, a second ultrasonic vibrator A404 and a second threaded end cover A405; a second cement slurry output pipeline A1001, a second motor bracket A1002, an upper slurry mixing tank A1003 and a lower slurry mixing tank A1004 are arranged on the second slurry mixing tank platform A10, and a conical boss is arranged at the center of the upper slurry mixing tank A1003; the upper end face and the lower end face of the second cement paste vibration driving stirrer A2 are respectively fixedly connected with an upper slurry mixing tank A1003 and a lower slurry mixing tank A1004, a second composite vibration stirring device A4 and a third bevel gear A5 are connected through keys, the third bevel gear A5 and a fourth bevel gear A6 are matched through bevel gears, the fourth bevel gear A6 and a second transmission shaft A7 are connected through keys, the second transmission shaft A7 and a second speed reducer A8 are connected through a coupling, the second speed reducer A8 and a second motor A9 are connected through an external coupling, the second motor A9 contacts with a second motor support A1002, and the lower slurry mixing tank A1004 and the second composite vibration stirring device A4 are connected through bolts; the second cement paste vibration driving stirrer A2 drives the eccentric impeller to rotate through the cement paste entering the upper slurry mixing pool A1003, so that eccentric vibration in the pipeline is realized, and the cement paste is driven to vibrate, so that the cement paste is further mixed; the second motor A9 starts to rotate through receiving electricity and starts to transmit power to the second speed reducer A8 through the coupler, the second speed reducer A8 transmits power to the fourth bevel gear A6 through the second transmission shaft A7, the fourth bevel gear A6 transmits power to the second compound vibration stirring device A4 through the third bevel gear A5, the second compound vibration stirring device A4 achieves stirring of cement paste through rotation of the second compound vibration stirring device A4, and the second cement paste output pipeline A1001 conveys cement paste evenly stirred to an inlet of a cement paste pump.
The vibration isolation device comprises a second well cementation cement slurry prying platform A11, a second vibration isolation spring A12 and a second spring guide rod A13, wherein a cylindrical groove which can enable the second spring guide rod A13 to slide in the second well cementation cement slurry prying platform A11 is arranged on the upper end surface along the vertical direction; the upper end surface of the second spring guide rod A13 is fixedly connected to the bottom of the lower slurry mixing pool A1004, the lower end surface is contacted with a groove on the upper end surface of the second well cementation cement slurry prying platform A11, and the second vibration isolation spring A12 is sleeved outside the second spring guide rod A13; the second vibration isolation spring a12 achieves vibration isolation by sliding along the spring guide rod a13 to consume vibration energy.
Fig. 12 and 13 are partial sectional views of a cement slurry preparation and input system and a cement slurry driving vibration stirring device according to the scheme, wherein the cement slurry driving vibration stirring device comprises a second clear water atomization spray gun A101, a second ash inlet pipeline A102 and a second mixing cavity A103; the device also comprises a second sleeve shell A201, a second upper supporting plate A202, a second stirring shaft A203, a second eccentric blade A204, a second lower supporting plate A205 and a connecting screw A206; the side wall of the second sleeve shell A201 is provided with threaded through holes along the radial direction, a plurality of circular through holes are uniformly distributed on the second upper support plate A202 and the second lower support plate A205 along the axial direction, and the side wall of the second sleeve shell A201 is provided with threaded grooves along the radial direction;
the upper end face and the lower end face of the second sleeve shell A201 are fixedly connected with the upper slurry mixing tank A1003 and the lower slurry mixing tank A1004 through welding respectively, the second upper supporting plate A202 is connected with the second sleeve shell A201 through a connecting screw A206, the second stirring shaft A203 is connected with the upper supporting plate A202 through a rolling bearing, second eccentric blades A204 with different masses are distributed on the second stirring shaft A203 and are fixedly connected with the second stirring shaft A203 through welding, the second lower supporting plate A205 is connected with the second sleeve shell A201 through the connecting screw A206, and the second lower supporting plate A205 is connected with the second stirring shaft A203 through a rolling bearing;
the second upper supporting plate A202 and the second lower supporting plate A205 are matched with the second stirring shaft A203, so that the second stirring shaft A203 is concentrically limited in the second sleeve shell A201, the second stirring shaft A203 and the second eccentric blades A204 with different masses form an eccentric impeller, and cement slurry entering the upper slurry mixing tank A1003 drives the eccentric impeller to rotate, and further the eccentric impeller drives cement slurry in a pipeline to vibrate, so that further slurry mixing is realized;
the using method of the cement paste stirring and mixing system with ultrasonic mechanical composite vibration comprises the following steps:
step one: assembling the device;
step two: starting a second motor A9 and a second ultrasonic vibrator A404 to perform discharging of dry cement ash and pumping of cement slurry;
step three: the dry cement and the cement slurry are mixed by a second high-energy mixer A1 and conveyed to an upper slurry mixing pool A1003 by a second conduit A3;
step four: cement slurry enters a second cement slurry vibration driving stirrer A2 to be subjected to first vibration stirring by driving the eccentric impeller to rotate;
step five: the cement paste enters a lower slurry mixing tank A1004 and is subjected to secondary vibration stirring through eccentric vibration generated by a second cement paste stirrer A403 and ultrasonic vibration generated by a second ultrasonic vibrator A404 by moving up and down;
and finally, the cement slurry is output to the inlet of the cement injection slurry pump through the second cement slurry output pipeline A1001, and the output cement slurry is fully mixed through multiple eccentric vibration stirring and ultrasonic vibration stirring, so that the stirring effect is improved, and the cement slurry quality is better.
According to the two schemes of the embodiment, the stirring efficiency and the stirring quality are improved, so that the stirring is more sufficient; the potential energy of cement paste is fully utilized, and the electric energy consumption is reduced.
Claims (2)
1. The ultrasonic mechanical composite vibration cement paste stirring and mixing system is characterized by comprising a cement paste preparation input system, a cement paste mixing pool stirring system and a vibration isolation device;
the cement paste preparation input system comprises a first high-energy mixer (1), a first cement paste vibration-driving mixer (2) and a first guide pipe (3); the first cement paste vibration-driving stirrer (2) is respectively connected with the first high-energy mixer (1) and the first guide pipe (3) through threads;
the mixing tank stirring system comprises a first composite vibration stirring device (4), a first bevel gear (5), a second bevel gear (6), a first transmission shaft (7), a first speed reducer (8), a first motor (9) and a first mixing tank platform (10); the first slurry mixing tank platform (10) is provided with a first cement slurry output pipeline (1001), a first motor bracket (1002) and a slurry mixing tank (1003); the first composite vibration stirring device (4) is connected with the first bevel gear (5) through a key, the first bevel gear (5) is matched with the second bevel gear (6) through a bevel gear, the second bevel gear (6) is connected with the first transmission shaft (7) through a key, the first transmission shaft (7) is connected with the first speed reducer (8) through a coupling, and the first speed reducer (8) is connected with the first motor (9) through an external coupling; the first motor (9) is in surface contact with the first motor bracket (1002), and the slurry mixing tank (1003) is connected with the first composite vibration stirring device (4) through bolts;
the vibration isolation device comprises a first well cementation cement slurry prying platform (11), a first vibration isolation spring (12) and a first spring guide rod (13); the upper end face of the first well cementation cement slurry prying platform (11) is provided with a cylindrical groove along the vertical direction, so that the first spring guide rod (13) slides in the first well cementation cement slurry prying platform; the upper end face of the first spring guide rod (13) is fixedly connected to the bottom of the slurry mixing tank (1003), the lower end face of the first spring guide rod is in contact with a cylindrical groove on the upper end face of the first well cementation cement slurry prying platform (11), and the first vibration isolation spring (12) is sleeved outside the first spring guide rod (13);
the first high-energy mixer (1) comprises a first clean water atomization spray gun (101), a first ash inlet pipeline (102) and a first mixing cavity (103);
the side wall of the first ash inlet pipeline (102) is provided with a circular through hole; the outer cylindrical surface of the first clear water atomization spray gun (101) is contacted with the inner cylindrical surface of the circular through hole of the first ash inlet pipeline (102), and is inserted into the first ash inlet pipeline (102) to be communicated with the first mixing cavity (103);
the first cement paste vibration driving stirrer (2) comprises a first sleeve shell (201), a first upper supporting plate (202), a first stirring shaft (203), a first eccentric blade (204) and a first lower supporting plate (205);
upper and lower annular supporting bosses are respectively arranged on two sides of the inner wall of the first sleeve shell (201), and circular through holes are respectively arranged on the first upper supporting plate (202) and the first lower supporting plate (205); the first sleeve shell (201) is connected with the first mixing cavity (103) through threads, the upper end face of the first upper supporting plate (202) is contacted with the lower end face of the first mixing cavity (103), the lower end face of the first upper supporting plate (202) is contacted with the upper end face of the annular supporting boss on the first sleeve shell (201), the first stirring shaft (203) is respectively connected with the first upper supporting plate (202) and the first lower supporting plate (205) through rolling bearings, first eccentric blades (204) with different masses are welded on the first stirring shaft (203), the upper end face of the first lower supporting plate (205) is contacted with the upper end face of the annular supporting boss under the first sleeve shell (201), and the lower end face is contacted with the first guide pipe (3);
the first composite vibration stirring device (4) comprises a first stepped transmission shaft (401), a first fixed guide rail frame (402), a first cement paste stirrer (403), a first ultrasonic vibrator (404) and a first threaded end cover (405);
rectangular sliding grooves are symmetrically formed in the first step transmission shaft (401), wavy curve sliding grooves (40201) are formed in the inner wall of the first fixed guide rail frame (402), cylindrical sliding blocks are symmetrically arranged at the upper end of the first cement slurry stirrer (403) in the radial direction, a hollow structure is arranged inside the first cement slurry stirrer, and eccentric blades with different masses are arranged at the lower end of the first cement slurry stirrer; the first stepped transmission shaft (401) is connected with the first bevel gear (5) through a key, the stepped surface of the first stepped transmission shaft (401) is contacted with the upper end surface of the first fixed guide rail frame (402), and the first fixed guide rail frame (402) is fixedly connected with the slurry mixing tank (1003) through a bolt; the cylindrical sliding block on the first cement paste stirrer (403) is in sliding connection with the rectangular sliding groove on the first step transmission shaft (401), and the cylindrical sliding block on the first cement paste stirrer (403) is in sliding connection with the wavy curve sliding groove (40201); the first ultrasonic vibrator (404) is connected with the first cement paste stirrer (403) through threads, a connecting wire of the first ultrasonic vibrator (404) is led out through an upper end hole of the first stepped transmission shaft (401), and the first threaded end cover (405) is connected with the first cement paste stirrer (403) through threads;
the first ultrasonic vibrator (404) comprises a screw (40401), a rear cover plate (40402), a ceramic plate (40403), a copper electrode (40404), a front cover plate (40405), a large stud (40406), a luffing rod (40407) and a small stud (40408);
the rear cover plate (40402) and the front cover plate (40405) are connected with the screw (40401) through threads, the ceramic plate (40403) and the copper electrode (40404) are sleeved outside the screw (40401), and the copper electrode (40404) and the front cover plate (40405) are in surface contact with the ceramic plate (40403); the large stud (40406) is in threaded connection with the front cover plate (40405), the large stud (40406) and the small stud (40408) are both in threaded connection with the amplitude transformer (40407), and the small stud (40408) is in threaded connection with the inner wall of the first cement slurry stirrer (403).
2. A method of using the ultrasonic mechanical composite vibration cement slurry mixing and compounding system of claim 1, the method comprising the steps of:
step 1: assembling an ultrasonic mechanical composite vibration cement paste stirring and mixing system;
step 2: the first ash inlet pipeline (102) conveys dry cement ash to the first mixing cavity (103) and mixes the dry cement ash with cement slurry sprayed by the first clean water atomization spray gun (101) at high pressure in the first mixing cavity (103);
step 3: the first upper supporting plate (202) and the first lower supporting plate (205) are matched with the first stirring shaft (203), the first stirring shaft (203) is concentrically limited in the first sleeve shell (201), the first stirring shaft (203) and first eccentric blades (204) with different masses form eccentric impellers, the eccentric impellers are driven to rotate by high-pressure cement paste sprayed in the first high-energy mixer (1), and then the eccentric impellers drive cement paste in a pipeline to vibrate, so that further slurry mixing is realized; a first conduit (3) for introducing cement slurry into the mixing tank (1003);
step 4: starting a first motor (9) and a first ultrasonic vibrator (404), wherein the first motor (9) transmits power to a first speed reducer (8) through a coupler, the first speed reducer (8) transmits power to a second bevel gear (6) through a first transmission shaft (7), the second bevel gear (6) transmits power to a first composite vibration stirring device (4) through a first bevel gear (5), the first composite vibration stirring device (4) realizes stirring of cement paste through self rotation, a copper electrode (40404) generates high-frequency alternating voltage through switching in high-frequency alternating current, and then the high-frequency alternating voltage and a ceramic plate (40403) act together to generate high-frequency mechanical vibration, and a variable amplitude rod (40407) expands the generated high-frequency mechanical vibration and transmits the vibration to a first cement paste stirrer (403) through a small double-ended stud (40408); the first step transmission shaft (401) rotates to drive the first cement paste stirrer (403) to slide along a rectangular chute on the first step transmission shaft (401), so that the first cement paste stirrer (403) slides along the axial direction, and meanwhile, the first step transmission shaft (401) drives the first cement paste stirrer (403) to slide along a wavy curve chute (40201), so that the first cement paste stirrer (403) rotates around the axis of the first cement paste stirrer; the first cement paste stirrer (403) drives the eccentric impeller on the first cement paste stirrer to vibrate through rotation and axial sliding, so that low-frequency vibration is transmitted to cement paste, and the self low-frequency vibration and stirring of the cement paste are realized; the first ultrasonic vibrator (404) transmits vibration to the blade through contact with the first cement paste stirrer (403), so that high-frequency vibration is transmitted to cement paste, and meanwhile, low-frequency vibration and high-frequency vibration of the cement paste are realized, so that cement paste is mixed more uniformly;
step 5: the first cement slurry output pipeline (1001) conveys cement slurry which is uniformly stirred to an inlet of a cement slurry pump, and meanwhile, the first vibration isolation spring (12) achieves vibration isolation by sliding along the first spring guide rod (13) to consume vibration energy.
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