CN111238253A

CN111238253A - Slurry cooling system

Info

Publication number: CN111238253A
Application number: CN202010055028.0A
Authority: CN
Inventors: 王刚
Original assignee: Shaanxi Aishu Machinery Manufacturing Co Ltd
Current assignee: Shaanxi Aishu Machinery Manufacturing Co Ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-06-05
Anticipated expiration: 2040-01-17
Also published as: CN111238253B

Abstract

The invention discloses a mud cooling system, which relates to the field of well drilling auxiliary equipment and comprises a sand pump, a plate heat exchanger, a cooling water tower and a water tank, wherein the plate heat exchanger comprises a first fluid inlet, a first fluid outlet communicated with the first fluid inlet, a second fluid inlet and a second fluid outlet communicated with the second fluid inlet; the output end of the sand pump is communicated to the second fluid inlet, and the second fluid outlet is connected with a discharge pipe; the water tank is communicated to the first fluid inlet through the first water pump and used for guiding water into the plate heat exchanger, the first fluid outlet is communicated to the cooling water tower, a water guide pipe is communicated between the cooling water tower and the water tank, a second water pump is communicated to the water guide pipe, and the cooling water tower conveys the cooled water to the water tank through the second water pump. Through setting up sand pump, plate heat exchanger, cooling tower and water pitcher for whole cooling efficiency is faster, makes the cooling of hot mud more convenient.

Description

Slurry cooling system

Technical Field

The invention relates to the field of drilling auxiliary equipment, in particular to a mud cooling system.

Background

In the drilling process, the drilling tool can generate a large amount of heat when cutting rocks, meanwhile, the drilling tool and the hole wall generate a large amount of heat through friction, the ground temperature at the bottom of the hole gradually rises along with the increase of the drilling depth, and the heat is transferred to slurry to be taken out of the well. The mud temperature also rises gradually in the process, and the rise of the mud temperature causes certain corrosion to a drilling tool and conveying equipment, shortens the service life of the drilling tool and influences the mud components and the mud effect. At present, mud prepared according to geological conditions is used for land drilling and oil drilling, so that the cost is high, and the mud liquid is generally recycled. In order to prevent the high-temperature mud from repeatedly entering the bottom of the hole and recycling the mud, a mud cooling system is needed to cool the mud, so that the temperature of the hot mud is quickly reduced.

The existing slurry cooling system adopts a route of lengthening a slurry groove, so that the slurry is naturally cooled in a circulating flow, the cooling efficiency is low, the implementation is troublesome, and the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a slurry cooling system which has the advantage of more convenient cooling of hot slurry.

In order to achieve the purpose, the invention provides the following technical scheme:

a mud cooling system comprises a sand pump, a plate heat exchanger, a cooling water tower and a water tank, wherein the plate heat exchanger comprises a first fluid inlet, a first fluid outlet communicated with the first fluid inlet, a second fluid inlet and a second fluid outlet communicated with the second fluid inlet; the output end of the sand pump is communicated to a second fluid inlet, and a discharge pipe is connected to the second fluid outlet; the water tank is communicated to the first fluid inlet through the first water pump and used for guiding water into the plate heat exchanger, the first fluid outlet is communicated to the cooling water tower, a water guide pipe is communicated between the cooling water tower and the water tank, the water guide pipe is communicated with the second water pump, and the cooling water tower conveys the cooled water to the water tank through the second water pump.

Through the technical scheme, the plate heat exchanger is a novel efficient heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The plate heat exchanger is an ideal device for heat exchange of liquid-liquid and liquid-vapor. When the hot mud needs to be cooled, the hot mud is pumped into the second fluid inlet and enters the plate heat exchanger through the sand pump and then is discharged from the second fluid outlet, and meanwhile, the cooling water in the water tank is pumped into the first fluid inlet through the first water pump and enters the plate heat exchanger and then is discharged through the first fluid outlet. The cooling water may cool the hot slurry as it flows through the plate heat exchanger. The cooling water is discharged, cooled by a cooling water tower and then discharged into a water tank to realize the recycling of the cooling water. The plate heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, convenience in installation and cleaning, wide application, long service life and the like. Under the condition of the same pressure loss, the heat transfer coefficient of the system is 3-5 times higher than that of a tubular heat exchanger, the occupied area of the system is one third of that of the tubular heat exchanger, the heat recovery rate can reach more than 90%, and compared with the existing cooling mode of a route for lengthening a mud trough, the system has the advantage of higher cooling efficiency, so that the hot mud is more convenient to cool.

The present invention in a preferred example may be further configured to: still include the mount pad, sand pump and plate heat exchanger all are located the mount pad, the entrance of sand pump is connected with the feed liquor pipe, water pitcher fixed connection sets up in the side of mount pad.

Through above-mentioned technical scheme, set up the mount pad, all be fixed in the mount pad with sand pump and plate heat exchanger on for sand pump and plate heat exchanger's connection is more stable, and water pitcher and mount pad fixed connection make overall structure compacter stable in addition.

The present invention in a preferred example may be further configured to: a filter is connected between the first water pump and the first fluid inlet.

Through above-mentioned technical scheme, set up the filter, the filter can filter the water that enters into plate heat exchanger, reduces the interior slab of plate heat exchanger because the incrustation scale is piled up and is influenced heat exchange efficiency for whole use is more stable.

The present invention in a preferred example may be further configured to: the water tank is internally and rotatably connected with a rotating shaft, the axis of the rotating shaft is horizontally arranged, a rotating part is coaxially arranged on the rotating shaft, and a plurality of shifting pieces are arranged on the rotating part along the circumferential outer side wall of the rotating shaft; the water guide pipe is communicated to the middle upper part of the water tank and penetrates into the water tank, a nozzle is arranged at one end of the water guide pipe facing the shifting sheet, and when the second water pump discharges water through the nozzle, the nozzle impacts the shifting sheet to drive the rotating part to rotate.

Through above-mentioned technical scheme, when the second water pump passes through the nozzle with water and discharges, the nozzle strikes the plectrum and drives rotation portion and rotate, and plectrum and rotation portion form a water wheel this moment, and the water column that strikes the plectrum with the nozzle is broken, realizes the further cooling to water. The rotating part and the shifting piece are arranged, so that the water cooling effect is better.

The present invention in a preferred example may be further configured to: the nozzle sets up towards the well upper portion of rotating part, the up end of water pitcher is provided with the hang plate, the hang plate is located the rotating part top and extends downwards towards the one side slope of keeping away from the nozzle.

Through above-mentioned technical scheme, when the nozzle water sprays out the plectrum of the well upper portion of strikeing the rotation portion and makes plectrum and rotation portion rotate, the rotation of rotation portion can make the splash to the hang plate with the splash whipping, then through hang plate water conservancy diversion to the water pitcher in to the cooling time has been prolonged, makes water cooling effect better.

The present invention in a preferred example may be further configured to: the water tank is characterized in that the inclined plate is an aluminum plate, a plurality of radiating fins are fixed on the upper end face of the inclined plate, and radiating fan blades used for blowing towards the radiating fins are further arranged on the water tank.

Through above-mentioned technical scheme, when water flows along the hang plate, the heat of water can make the hang plate generate heat and rise temperature. The heat dissipation device is provided with the heat dissipation fins and the heat dissipation fan blades, the heat dissipation fan blades rotate to form air flow, the heat dissipation effect of the heat dissipation fins is better, the heat of the inclined plate can be taken away in time, the heat dissipation capacity of the inclined plate is guaranteed, and the overall cooling effect is better.

The present invention in a preferred example may be further configured to: radiating fin all is on a parallel with the axis setting of pivot, it is connected with the transmission shaft still to rotate on the water pitcher, heat dissipation fan blade coaxial be fixed in on the transmission shaft and towards the radiating fin setting, be provided with drive assembly between transmission shaft and the pivot, drive assembly including coaxial be fixed in the epaxial action wheel of pivot, coaxial be fixed in the transmission epaxial follow driving wheel and tensioning in action wheel and follow the epaxial drive belt of follow driving.

Through above-mentioned technical scheme, strike the plectrum when the nozzle and drive rotation portion and pivot and rotate, the rotation of pivot can drive the action wheel and rotate to drive through the drive belt and rotate from the driving wheel and make the transmission shaft rotate, thereby make the heat dissipation fan blade rotate and cool off the hang plate. The transmission assembly is arranged, so that the use of a power source can be saved, and the whole use is more energy-saving and environment-friendly.

The present invention in a preferred example may be further configured to: the diameter of the driving wheel is larger than that of the driven wheel.

Through the technical scheme, the diameter of the driving wheel is larger than that of the driven wheel, and the diameter ratio is usually 3:1, so that the rotating speed of the transmission shaft is higher, and the heat dissipation fan blades can form airflow heat dissipation.

The present invention in a preferred example may be further configured to: side baffles are fixed at two axial ends of the rotating part, and the shifting piece is fixed on the side baffles along two axial ends of the rotating part respectively.

Through above-mentioned technical scheme, set up the side shield, block the splash of both sides through the side shield for behind the nozzle spun water impact plectrum most of are fallen down and are further cooled on the hang plate, thereby make holistic cooling effect more stable.

Compared with the prior art, the invention has the beneficial effects that:

(1) by arranging the sand pump, the plate heat exchanger, the cooling water tower and the water tank, the overall cooling efficiency is higher, and the hot slurry is more convenient to cool;

(2) the rotating part and the shifting piece are arranged, so that the water cooling effect is better;

(3) through setting up radiating fin and heat dissipation fan blade and drive assembly, make the rotation of rotation portion can drive the heat dissipation fan blade and rotate and cool off the hang plate through drive assembly for holistic use is energy-concerving and environment-protective more.

Drawings

FIG. 1 is an overall schematic view of an embodiment;

FIG. 2 is a schematic view of the structure of a water tank of the embodiment;

FIG. 3 is a schematic cross-sectional view of the water tank of the embodiment;

fig. 4 is a partial structural schematic diagram of the embodiment, which is used for showing the structure of the transmission assembly.

Reference numerals: 1. a mounting seat; 2. a sand pump; 3. a plate heat exchanger; 31. a first fluid inlet; 32. a first fluid outlet; 33. a second fluid inlet; 34. a second fluid outlet; 4. a cooling water tower; 5. a water tank; 6. a liquid inlet pipe; 7. a discharge pipe; 8. a first water pump; 9. a filter; 10. a water conduit; 11. a second water pump; 12. a rotating shaft; 13. a rotating part; 14. a shifting sheet; 15. a side dam; 16. a nozzle; 17. an inclined plate; 18. a heat dissipating fin; 19. a drive shaft; 20. a heat dissipation fan blade; 21. a transmission assembly; 211. a driving wheel; 212. a driven wheel; 213. a transmission belt.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

Example (b):

a slurry cooling system, as shown in fig. 1, comprises a mounting base 1, a sand pump 2, a plate heat exchanger 3, a cooling water tower 4 and a water tank 5. Sand pump 2 and plate heat exchanger 3 all are located mount pad 1, and water pitcher 5 fixed connection sets up in the side of mount pad 1. The plate heat exchanger 3 is a novel high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates to form a first fluid channel (not shown) through which a cooling fluid flows and a second fluid channel (not shown) through which a fluid to be cooled passes for heat exchange through the plates. The plate heat exchanger 3 comprises a first fluid inlet 31 communicating with the first fluid channel, a first fluid outlet 32 communicating with the first fluid channel and the first fluid inlet 31, a second fluid inlet 33 communicating with the second fluid channel, a second fluid outlet 34 communicating with the second fluid channel and the second fluid inlet 33. The output end of the sand pump 2 is communicated to the second fluid inlet 33, the inlet of the sand pump 2 is connected with the liquid inlet pipe 6, and the second fluid outlet 34 is connected with the discharge pipe 7.

One end of the water pipe 5, which is far away from the mounting seat 1, is provided with a water inlet, and the water inlet is used for supplementing water into the water tank 5. The water tank 5 is communicated to the first fluid inlet 31 near the bottom through a first water pump 8 for guiding water into the plate heat exchanger 3, and a filter 9 is connected between the first water pump 8 and the first fluid inlet 31. Filter 9 is prior art, can filter the water that enters into plate heat exchanger 3 through filter 9, reduces the interior slab of plate heat exchanger 3 and influences heat exchange efficiency because the incrustation scale is piled up. The first fluid outlet 32 is connected to the cooling water tower 4, and the cooling water tower 4 is a device for cooling water, in which the water exchanges heat with air flowing therethrough, so that the temperature of the water is lowered, and the cooling water is cooled and reused. A water guide pipe 10 is communicated between the cooling water tower 4 and the water tank 5, a second water pump 11 is communicated on the water guide pipe 10, and the cooling water tower 4 conveys the cooled water to the water tank 5 through the second water pump 11.

As shown in fig. 2 and 3, a rotating shaft 12 is rotatably connected in the water tank 5, the axis of the rotating shaft 12 is horizontally arranged, and two ends of the rotating shaft 12 are rotatably connected with the water tank 5 through bearings. The rotating portion 13 is coaxially arranged on the rotating shaft 12, the rotating portion 13 is cylindrical, and a plurality of shifting pieces 14 are uniformly fixed on the rotating portion 13 along the circumferential outer side wall of the rotating shaft 12. Side baffles 15 are fixed at two axial ends of the rotating part 13, and the two axial ends of the shifting piece 14 along the rotating part 13 are respectively fixed on the side baffles 15.

The water conduit 10 is communicated with the middle upper part of the water tank 5 and penetrates into the water tank 5, one end of the water conduit 10 facing the shifting piece 14 is fixedly communicated with a nozzle 16, and the nozzle 16 is arranged facing the shifting piece 14 on the middle upper part of the rotating part 13. When the second water pump 11 discharges water through the nozzle 16, the nozzle 16 impacts the paddle 14 to drive the rotating part 13 to rotate, at the moment, the paddle 14 and the rotating part 13 form a water wheel, and a water column of the nozzle 16 impacting the paddle 14 is crushed to form water spray, so that further cooling of the water is realized.

As shown in fig. 2 and 3, the upper end surface of the water tank 5 is provided with an inclined plate 17, and the inclined plate 17 is located above the rotating portion 13 and extends obliquely downward toward a side away from the nozzle 16. A plurality of radiating fins 18 are fixed on the upper end face of the inclined plate 17, the inclined plate 17 and the radiating fins 18 are both aluminum plates, and the radiating fins 18 are all arranged in parallel to the axis of the rotating shaft 12.

As shown in fig. 2 and 4, the rotating shaft 12 axially penetrates through the water tank 5, the water tank 5 is further rotatably connected with a transmission shaft 19, the transmission shaft 19 is parallel to the rotating shaft 12, a heat dissipation fan blade 20 is coaxially fixed on the transmission shaft 19, and the heat dissipation fan blade 20 is arranged towards the heat dissipation fins 18. A transmission assembly 21 is arranged between the transmission shaft 19 and the rotating shaft 12, the transmission assembly 21 is positioned outside the water tank 5, the transmission assembly 21 comprises a driving wheel 211 coaxially fixed on the rotating shaft 12, a driven wheel 212 coaxially fixed on the transmission shaft 19 and a transmission belt 213 tensioned on the driving wheel 211 and the driven wheel 212, and the diameter of the driving wheel 211 is larger than that of the driven wheel 212.

When the water of the nozzle 16 is sprayed to impact the shifting piece 14 at the middle upper part of the rotating part 13, so that the shifting piece 14 and the rotating part 13 rotate, the rotation of the rotating part 13 can throw the spray to enable the spray to splash onto the inclined plate 17 and then be guided into the water tank 5 through the inclined plate 17, and therefore the cooling time is prolonged. The water flows along the inclined plate 17, and after a certain time, the heat of the water causes the inclined plate 17 to heat up. At this time, the nozzle 16 impacts the poking piece 14 to drive the rotating part 13 and the rotating shaft 12 to rotate, the rotating shaft 12 can drive the transmission shaft 19 to rotate through the transmission assembly 21, the transmission shaft 19 rotates to enable the heat dissipation fan blade 20 to rotate to form air flow, the air flow enables the heat dissipation effect of the heat dissipation fins 18 to be better through gaps among the heat dissipation fins 18, the heat dissipation fan blade 20 cools the inclined plate 17, and the heat dissipation capacity of the inclined plate 17 is ensured.

The working principle of the embodiment is as follows:

when the hot slurry needs to be cooled, the hot slurry is pumped into the second fluid inlet 33 by the sand pump 2, enters the second fluid channel in the plate heat exchanger 3, and is then discharged from the second fluid outlet 34, and meanwhile, the first water pump 8 pumps the cooling water in the water tank 5 to the first fluid inlet 31, enters the first fluid channel in the plate heat exchanger 3, and is then discharged through the first fluid outlet 32. The cooling water may cool the hot slurry as it flows through the plate heat exchanger 3. The cooling water discharges the back and discharges to the realization cooling water's cyclic utilization in the water pitcher 5 again through cooling tower 4 cooling back, cooperates the work of rotation portion 13 and plectrum 14 and hang plate 17 for the water-cooling effect that enters into in the water pitcher 5 is better.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A mud cooling system, its characterized in that: the sand pump type heat exchanger comprises a sand pump (2), a plate type heat exchanger (3), a cooling water tower (4) and a water tank (5), wherein the plate type heat exchanger (3) comprises a first fluid inlet (31), a first fluid outlet (32) communicated with the first fluid inlet (31), a second fluid inlet (33) and a second fluid outlet (34) communicated with the second fluid inlet (33); the output end of the sand pump (2) is communicated to a second fluid inlet (33), and a discharge pipe (7) is connected to a second fluid outlet (34); the water tank (5) is communicated with a first fluid inlet (31) through a first water pump (8) and is used for guiding water into the plate heat exchanger (3), a first fluid outlet (32) is communicated with the cooling water tower (4), a water guide pipe (10) is communicated between the cooling water tower (4) and the water tank (5), a second water pump (11) is communicated on the water guide pipe (10), and the cooling water tower (4) conveys the cooled water to the water tank (5) through the second water pump (11).

2. A mud cooling system according to claim 1, wherein: still include mount pad (1), sand pump (2) and plate heat exchanger (3) all are located mount pad (1), the entrance of sand pump (2) is connected with feed liquor pipe (6), water pitcher (5) fixed connection sets up in the side of mount pad (1).

3. A mud cooling system according to claim 1, wherein: a filter (9) is connected between the first water pump (8) and the first fluid inlet (31).

4. A mud cooling system according to claim 1, wherein: a rotating shaft (12) is rotatably connected in the water tank (5), the axis of the rotating shaft (12) is horizontally arranged, a rotating part (13) is coaxially arranged on the rotating shaft (12), and a plurality of shifting sheets (14) are arranged on the rotating part (13) along the circumferential outer side wall of the rotating shaft (12); the water guide pipe (10) is communicated to the middle upper part of the water tank (5) and penetrates into the water tank (5), a nozzle (16) is arranged at one end, facing the shifting piece (14), of the water guide pipe (10), and when the second water pump (11) discharges water through the nozzle (16), the nozzle (16) impacts the shifting piece (14) to drive the rotating part (13) to rotate.

5. A mud cooling system according to claim 4, wherein: the nozzle (16) is arranged towards the middle upper part of the rotating part (13), the upper end face of the water tank (5) is provided with an inclined plate (17), and the inclined plate (17) is positioned above the rotating part (13) and extends downwards towards one side far away from the nozzle (16) in an inclined mode.

6. A mud cooling system according to claim 5, wherein: the water tank is characterized in that the inclined plate (17) is an aluminum plate, a plurality of radiating fins (18) are fixed on the upper end face of the inclined plate (17), and radiating fan blades (20) used for blowing towards the radiating fins (18) are further arranged on the water tank (5).

7. A mud cooling system according to claim 6, wherein: all be on a parallel with the axis setting of pivot (12) radiating fin (18), it is connected with transmission shaft (19) still to rotate on water pitcher (5), heat dissipation fan blade (20) coaxial fixation in on transmission shaft (19) and towards radiating fin (18) setting, be provided with drive assembly (21) between transmission shaft (19) and pivot (12), drive assembly (21) including coaxial drive wheel (211) that is fixed in on pivot (12), coaxial driven wheel (212) that is fixed in on transmission shaft (19) and tensioning in drive belt (213) on drive wheel (211) and driven wheel (212).

8. The mud cooling system of claim 7, wherein: the diameter of the driving wheel (211) is larger than that of the driven wheel (212).

9. A mud cooling system according to claim 5, wherein: side baffles (15) are fixed at two axial ends of the rotating part (13), and the shifting piece (14) is fixed on the side baffles (15) along two axial ends of the rotating part (13).