Quartz sand cooling device for fracturing

Abstract

A quartz sand cooling device for fracturing comprises a main cooling pipeline. A rotating shaft is rotationally arranged in the main cooling pipeline; spiral blades are arranged outside the rotating shaft; a motor is arranged on one side of one end of the main cooling pipeline; the motor drives the rotating shaft to rotate through a gear transmission box arranged on one side; a feeding hole is formed in the upper side of one end of the main cooling pipeline close to the motor; a discharge hole is formed in the lower side of one end of the main cooling pipeline away from the motor; a cooling cavity is arranged between the feed port and the discharge port on the outer side of the main cooling pipeline; a first cooling water inlet is formed in one end, close to the discharge hole, of the cooling cavity; a first cooling water outlet is formed in the end, close to the feeding port, of the cooling cavity. Cooling water is introduced into the cooling cavity through the first cooling water inlet, the advancing direction of the cooling water is opposite to the direction of quartz sand, the overall temperature difference between the cooling water and the high-temperature quartz sand in the advancing process is large in a countercurrent cooling mode, the heat exchange efficiency is improved, and the cooling effect on the quartz sand is improved.

Description

Technical Field

[0001] The utility model belongs to the field of quartz sand production devices, in particular to a quartz sand cooling device for fracturing. Background Art

[0002] In the process of oil extraction, oil fracturing proppants are usually used to support the fracturing cracks. Quartz sand proppants have higher fracturing strength and are widely used. Quartz sand needs to be dried during the production process. The temperature of the dried quartz sand is too high to proceed to the next step. In the current production process, the process usually waits for the quartz sand to cool naturally or uses a cooling device to cool it before proceeding to the next step. The natural cooling time is long, which affects the production progress. The cooling device currently used has low cooling efficiency for quartz sand and poor cooling effect. Usually, the temperature of the quartz sand drops little after one cooling, and multiple cooling operations will greatly increase the workload of the workers. Utility Model Content

[0003] The utility model aims to provide a quartz sand cooling device for fracturing, so as to solve the technical problem that in the current production process, the method generally adopts waiting for the quartz sand to cool naturally or using a cooling device to cool it before proceeding to the next operation, and the natural cooling time is long, which affects the production progress; the cooling device currently used has low cooling efficiency for quartz sand and poor cooling effect. Usually, the temperature drop of quartz sand is small after one cooling, and multiple cooling operations will greatly increase the workload of workers.

[0004] To achieve the above-mentioned purpose, the specific technical solution of the quartz sand cooling device for fracturing in the present invention is as follows:

[0005] A quartz sand cooling device for fracturing, comprising a main cooling pipe; a rotating shaft is rotatably arranged in the main cooling pipe; spiral blades are arranged on the outside of the rotating shaft; a motor is arranged on one side of one end of the main cooling pipe; the motor drives the rotating shaft to rotate through a gear transmission box arranged on one side; a feed port is arranged on the upper side of one end of the main cooling pipe close to the motor; a discharge port is arranged on the lower side of one end of the main cooling pipe away from the motor; a cooling cavity is arranged on the outside of the main cooling pipe between the feed port and the discharge port; a first cooling water inlet is arranged on one end of the cooling cavity close to the discharge port; and a first cooling water outlet is arranged on one end of the cooling cavity close to the feed port.

[0006] Furthermore, the rotating shaft is hollow; rotating joints are provided at both ends of the rotating shaft, passing through the main body and the gear transmission box respectively; a second cooling water outlet is provided at the rotating joint near the feed port; and a second cooling water inlet is provided at the rotating joint near the discharge port.

[0007] Furthermore, the second cooling water inlet and the second cooling water outlet are connected to the hollow pipe in the rotating shaft through a rotary joint.

[0008] Furthermore, a spiral partition is provided on the outside of the main cooling pipe in the cooling cavity.

[0009] The utility model discloses a quartz sand cooling device for fracturing, which has the following advantages: the motor drives the rotating shaft to rotate the spiral blade through the gear transmission box, and the quartz sand entering through the feed port is transported in the main cooling pipe, and at the same time, cooling water is introduced into the cooling cavity through the first cooling water inlet, and the cooling water is discharged through the first cooling water outlet. The direction of the cooling water is opposite to that of the quartz sand, and the countercurrent cooling method makes the overall temperature difference between the cooling water and the high-temperature quartz sand larger during the process of traveling, thereby improving the heat exchange efficiency and increasing the cooling effect on the quartz sand; by arranging a spiral partition between the cooling cavity and the main cooling pipe, the cooling water entering through the first cooling water inlet is cooled along the spiral partition. The plate spirally circles around the outer wall of the main cooling pipe and is finally discharged through the first cooling water outlet. The cooling water spirally moves to create a more uniform cooling environment, cools the quartz sand in the main cooling pipe, and prevents uneven cooling water flow in the cooling cavity and poor cooling effect in some local positions. Rotary joints are provided at both ends of the rotating shaft, and cooling water is introduced through the second cooling water inlet, introduced into the interior of the rotating shaft through the rotary joint, and finally discharged through the second cooling water outlet of the rotary joint at the other end. The cooling water circulates in the rotating shaft to cool the rotating shaft, and the spiral blades conduct heat to cool the inside of the quartz sand in the main cooling pipe, and the cooling effect of the quartz sand is increased in cooperation with the cooling cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0012] Explanation of the markings in the figure: 1. Main cooling pipe; 2. Rotating shaft; 3. Spiral blade; 4. Motor; 5. Gear transmission box; 6. Feed inlet; 7. Discharge outlet; 8. Cooling chamber; 9. First cooling water inlet; 10. First cooling water outlet; 11. Rotary joint; 12. Second cooling water outlet; 13. Second cooling water inlet; 14. Spiral partition. DETAILED DESCRIPTION

[0013] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a quartz sand cooling device for fracturing of the present invention in conjunction with the accompanying drawings.

[0014] like Figure 1-2As shown, the utility model is a quartz sand cooling device for fracturing, comprising a main cooling pipe 1; a rotating shaft 2 is rotatably arranged in the main cooling pipe 1; a spiral blade 3 is arranged on the outside of the rotating shaft 2; a motor 4 is arranged on one side of one end of the main cooling pipe 1; the motor 4 drives the rotating shaft 2 to rotate through a gear transmission box 5 arranged on one side; a feed port 6 is arranged on the upper side of the end of the main cooling pipe 1 close to the motor 4; a discharge port 7 is arranged on the lower side of the end of the main cooling pipe 1 away from the motor 4; a cooling cavity 8 is arranged on the outside of the main cooling pipe 1 between the feed port 6 and the discharge port 7; a first cooling water inlet 9 is arranged on the end of the cooling cavity 8 close to the discharge port 7; and a first cooling water outlet 10 is arranged on the end of the cooling cavity 8 close to the feed port.

[0015] Combine Figure 1-2 As shown, when in use, the feed port of the device is connected to the quartz sand drying device, and the high-temperature quartz sand dried by the quartz sand drying device enters the main cooling pipe 1 through the feed port, and the motor 4 drives the rotating shaft 2 to drive the spiral blade 3 to rotate through the gear transmission box 5, and the quartz sand entering through the feed port is transported in the main cooling pipe 1. At the same time, cooling water is introduced into the cooling cavity 8 through the first cooling water inlet 9, and the cooling water is discharged through the first cooling water outlet 10. The direction of travel of the cooling water is opposite to that of the quartz sand. The countercurrent cooling method makes the overall temperature difference between the cooling water and the high-temperature quartz sand larger during the travel process, thereby improving the heat exchange efficiency and increasing the cooling effect on the quartz sand.

[0016] A spiral baffle 14 is provided on the outside of the main cooling pipe 1 in the cooling cavity 8. By providing the spiral baffle 14 between the cooling cavity 8 and the main cooling pipe 1, the cooling water entering through the first cooling water inlet 9 spirals around the outer wall of the main cooling pipe 1 along the spiral baffle 14 and is finally discharged through the first cooling water outlet 10. The cooling water moves in a spiral manner to create a more uniform cooling environment, cool the quartz sand in the main cooling pipe 1, and prevent the occurrence of uneven cooling water flow in the cooling cavity 8 and poor cooling effect in local locations.

[0017] The rotating shaft 2 is hollow; rotary joints 11 are respectively provided at both ends of the rotating shaft 2 through the main body and the gear transmission box 5; a second cooling water outlet 12 is provided at the rotary joint 11 near the side of the feed port 6; a second cooling water inlet 13 is provided at the rotary joint 11 near the side of the discharge port 7. The second cooling water inlet 13 and the second cooling water outlet 12 are connected with the hollow pipe of the rotating shaft 2 through the rotary joint 11. The rotating shaft 2 is provided with rotary joints 11 at both ends of the rotating shaft 2, and cooling water is introduced through the second cooling water inlet 13, and is introduced into the interior of the rotating shaft 2 through the rotary joint 11, and then discharged through the second cooling water outlet 12 of the rotary joint 11 at the other end. The cooling water is circulated in the rotating shaft 2 to cool the rotating shaft 2, and the spiral blades 3 are used to conduct heat to cool the inside of the quartz sand in the main cooling pipe 1, and the cooling effect of the quartz sand is increased in cooperation with the cooling cavity 8.

[0018] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A quartz sand cooling device for fracturing, characterized in that: The invention comprises a main cooling pipe (1); a rotating shaft (2) is rotatably arranged in the main cooling pipe (1); a spiral blade (3) is arranged on the outside of the rotating shaft (2); a motor (4) is arranged on one side of one end of the main cooling pipe (1); the motor (4) drives the rotating shaft (2) to rotate through a gear transmission box (5) arranged on one side; a feed port (6) is arranged on the upper side of one end of the main cooling pipe (1) close to the motor (4); a discharge port (7) is arranged on the lower side of one end of the main cooling pipe (1) away from the motor (4); a cooling cavity (8) is arranged on the outside of the main cooling pipe (1) between the feed port (6) and the discharge port (7); a first cooling water inlet (9) is arranged on one end of the cooling cavity (8) close to the discharge port (7); and a first cooling water outlet (10) is arranged on one end of the cooling cavity (8) close to the feed port.

2. A quartz sand cooling device for fracturing according to claim 1, characterized in that: The rotating shaft (2) is hollow; both ends of the rotating shaft (2) pass through the main body and the gear transmission box (5) and are provided with rotating joints (11); the rotating joint (11) on the side close to the feed port (6) is provided with a second cooling water outlet (12); and the rotating joint (11) on the side close to the discharge port (7) is provided with a second cooling water inlet (13).

3. A quartz sand cooling device for fracturing according to claim 2, characterized in that: The second cooling water inlet (13) and the second cooling water outlet (12) are connected to the hollow pipe of the rotating shaft (2) through the rotary joint (11).

4. The quartz sand cooling device for fracturing according to claim 1, characterized in that: A spiral partition (14) is provided in the cooling cavity (8) outside the main cooling pipe (1).

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