Sand removal apparatus and sand removal method for sand removal apparatus

Abstract

The application provides a sand removal device and a sand removal method thereof. The sand removal device comprises a first separation device, a second separation device and a sand removal device. The first separation device comprises a first sand collecting cylinder and is connected with an air inlet pipeline. The second separation device comprises a second sand collecting cylinder and is connected with an air outlet pipeline. The second separation device is communicated with the first separation device to enable the gas to enter the air outlet pipeline from the air inlet pipeline. The sand removal device comprises a connecting cylinder and a sand removal mechanism. Two ends of the connecting cylinder are communicated with the first sand collecting cylinder and the second sand collecting cylinder to form a sand removal space. At least a part of the sand removal mechanism is arranged in the sand removal space. The connecting cylinder has a sand removal opening. The sand removal mechanism removes the sand from the sand removal opening to the sand removal space. The application solves the problem of low sand cleaning efficiency of the sand removal device in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of natural gas desanding, in particular to a desanding device and a sand discharging method of the desanding device. BACKGROUND

[0002] Natural gas is an important clean energy combustible gas stored in stratum. When natural gas is exploited, the raw gas directly extracted from the gas well often contains a small amount of sand particles. In recent years, in order to increase production, a large amount of fracturing operation is adopted, and a part of the proppant sand carried by the fracturing fluid will also rise to the wellhead with the exploited natural gas. If the sand is not removed, the sand will erode the pipeline and even block the pipeline, which seriously affects the service life of the gas transmission system. Therefore, desanding devices are generally used for desanding in gas fields. The desanding device in the prior art adopts a two-stage desanding device, and the two sand collecting cylinders in the lower part of the two-stage desanding device are not connected and are not communicated. When the internal sand particles need to be removed, the desanding device needs to be stopped, and each sand collecting cylinder needs to be opened separately to remove the internal accumulated sand, which undoubtedly increases the workload and greatly reduces the desanding efficiency. In addition, due to the significant difference in the amount of sand particles between the first stage and the second stage, the amount of sand particles accumulated in the internal part is also different, which easily causes the problem that one of them is full of sand particles while the other has a small amount of sand particles, and the utilization of the device is not sufficient.

[0003] That is, the desanding device in the prior art has the problem of low efficiency in cleaning accumulated sand. SUMMARY

[0004] The main purpose of the present application is to provide a desanding device and a sand discharging method of the desanding device to solve the problem of low efficiency in cleaning accumulated sand of the desanding device in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a desanding device is provided, which comprises: a first-stage separation device, the first-stage separation device comprising a first-stage sand collecting cylinder, the first-stage separation device being used for being connected with a gas inlet pipeline; a second-stage separation device, the second-stage separation device comprising a second-stage sand collecting cylinder, the second-stage separation device being used for being connected with a gas outlet pipeline, the second-stage separation device being communicated with the first-stage separation device to enable gas to enter the gas outlet pipeline from the gas inlet pipeline; a sand discharging device, the sand discharging device comprising a connecting cylinder and a sand discharging mechanism, two ends of the connecting cylinder being communicated with the first-stage sand collecting cylinder and the second-stage sand collecting cylinder respectively to form a sand discharging space, at least a part of the sand discharging mechanism being arranged in the sand discharging space, the connecting cylinder having a sand discharging opening, and the sand discharging mechanism discharging sand particles out of the sand discharging space through the sand discharging opening.

[0006] Further, the sand discharging mechanism comprises: a rotating shaft, the rotating shaft penetrates the sand discharging space, two ends of the rotating shaft are connected with the inner wall surfaces of the first sand collecting cylinder and the second sand collecting cylinder respectively; a driving assembly, the driving assembly is arranged at the center of the rotating shaft, and the driving assembly is used for controlling the rotating shaft to rotate; and two spiral blades, the two spiral blades are wound from the two ends of the rotating shaft to the direction close to the driving assembly, and the winding directions of the two spiral blades are opposite.

[0007] Further, the driving assembly comprises: a wheel disc, the wheel disc is fixed on the rotating shaft; and a pull rope, one end of the pull rope is fixed on the wheel disc, and the pull rope is wound around the wheel disc until the other end of the pull rope faces the sand discharging port.

[0008] Further, the wheel disc is a magnetic member, and the pull rope is a ferromagnetic member.

[0009] Further, the two ends of the rotating shaft are provided with two rotating assemblies, the rotating assemblies are fixed on the inner wall surfaces of the first sand collecting cylinder or the second sand collecting cylinder, and the rotating assemblies can drive the rotating shaft to rotate.

[0010] Further, the rotating assembly comprises: a fixer, the fixer is fixed on the inner wall surface of the first sand collecting cylinder or the second sand collecting cylinder, and the fixer has a containing groove; a rotating groove, the rotating groove is coaxially arranged in the containing groove, and the end of the rotating shaft is inserted into the rotating groove; and a torsional spring, the torsional spring is arranged between the fixer and the rotating groove, so as to drive the rotating groove to rotate relative to the fixer.

[0011] Further, the rotating groove is a spline groove, and the rotating shaft is spline-connected with the rotating groove.

[0012] Further, the spiral blades are arranged at intervals from the driving assembly, and the sand discharging mechanism further comprises two blocking pieces, the blocking pieces are fixed between the spiral blades and the driving assembly.

[0013] Further, the sand discharging port is located on the side of the connecting cylinder, and the central axis of the sand discharging port is perpendicular to the extension direction of the sand discharging space.

[0014] Further, the bottom surface of the connecting cylinder comprises a first sand collecting section, a sand discharging section and a second sand collecting section which are connected in sequence, the sand discharging port is arranged on the side of the sand discharging section, the first sand collecting section is connected with the first sand collecting cylinder, the second sand collecting section is connected with the second sand collecting cylinder, and the first sand collecting section and the second sand collecting section are arranged to be inclined to the sand discharging section.

[0015] Further, the bottom surface of the connecting cylinder is arranged to be inclined to the sand discharging port.

[0016] Further, the sand discharging device further comprises a sealing device, the sealing device is arranged outside the sand discharging port to seal the sand discharging space.

[0017] Further, the sealing device comprises: a cover plate, the outer periphery of the cover plate is located outside the outer periphery of the sand discharging port; and a locking mechanism, the locking mechanism is connected with the cover plate and the connecting cylinder.

[0018] Further, the side of the connecting cylinder with the sand outlet is provided with two flange edges, the two flange edges respectively extend from the opposite sides of the sand outlet, and the cover plate is connected with the flange edges.

[0019] Further, the outer periphery of the cover plate coincides with the outer periphery of the flange edge, and the locking mechanism covers the flange edge and the cover plate.

[0020] According to another aspect of the present application, a sand removal method of a sand removal device is provided, which adopts the sand removal device described above, and the sand removal method comprises the following steps: opening the closing device of the sand removal device; pulling the pull rope of the driving assembly of the sand removal device to rotate the rotating shaft of the sand removal mechanism of the sand removal device; the spiral blade of the sand removal mechanism gathers and discharges the sand from the sand outlet of the connecting cylinder of the sand removal device until the sand is completely discharged, and the pulling of the pull rope is stopped; the pull rope is returned, and the reverse rotation of the rotating shaft is driven by the reverse rotation assembly of the rotating shaft to make the pull rope wind around the disc of the driving assembly.

[0021] By adopting the technical scheme of the present application, the sand removal device comprises a first separation device, a second separation device and a sand removal device, the first separation device comprises a first sand collecting cylinder, and the first separation device is used to be connected with an air inlet pipeline; the second separation device comprises a second sand collecting cylinder, and the second separation device is used to be connected with an air outlet pipeline, the second separation device is communicated with the first separation device to make the gas enter the air outlet pipeline from the air inlet pipeline; the sand removal device comprises a connecting cylinder and a sand removal mechanism, the two ends of the connecting cylinder are respectively communicated with the first sand collecting cylinder and the second sand collecting cylinder to form a sand removal space, at least a part of the sand removal mechanism is arranged in the sand removal space, the connecting cylinder has a sand outlet, and the sand removal mechanism discharges the sand from the sand outlet to the sand removal space.

[0022] By arranging the first separation device and the second separation device, the gas passing through the sand removal device can be subjected to twice sand removal, the sand obtained by the twice sand removal is respectively collected in the first sand collecting cylinder and the second sand collecting cylinder, the first sand collecting cylinder and the second sand collecting cylinder are communicated through the connecting cylinder, so that the first sand collecting cylinder and the second sand collecting cylinder have the linkage effect, and the sand is discharged through the sand removal mechanism, thereby avoiding the twice cleaning process of the first sand collecting cylinder and the second sand collecting cylinder, and greatly improving the cleaning efficiency of the accumulated sand. In addition, since the first sand collecting cylinder and the second sand collecting cylinder are communicated, the accumulated sand or water in the first sand collecting cylinder and the second sand collecting cylinder can flow to each other, so that the situation that one sand collecting cylinder is filled with too much sand and the other sand collecting cylinder is filled with less sand is avoided, the utilization rate of the device is improved, the downtime of the sand removal device is relatively reduced, and the working efficiency of the gas sand removal is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide further understanding of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0024] Figure 1Fig. 2 shows a cross-sectional view of the sand removal device of the embodiment of the present application from one angle;

[0025] Figure 2 Fig. 3 shows an enlarged schematic view of part A in Fig. 2; Figure 1

[0026] Figure 3 Fig. 4 shows a cross-sectional view of the sand removal device of the embodiment of the present application from another angle; Figure 2

[0027] Figure 4 Fig. 5 shows a schematic view of part structure in Fig. 4; Figure 3

[0028] Figure 5 Fig. 6 shows a schematic view of the rotating assembly in Fig. 4 from one angle; Figure 1

[0029] Fig. 7 shows a flow chart of the sand removal method of the sand removal device of an alternative embodiment of the present application. Figure 6 In the drawings, the following reference signs are used:

[0030] 10, primary separation device; 11, primary sand collecting cylinder; 111, first bore enlarging section; 12, primary separator; 20, secondary separation device; 21, secondary sand collecting cylinder; 211, second bore enlarging section; 22, secondary separator; 30, sand removal device; 31, connecting cylinder; 311, sand removal opening; 312, first sand collecting section; 313, sand outlet section; 314, second sand collecting section; 315, flange edge; 32, sand removal mechanism; 321, rotating shaft; 322, driving assembly; 323, helical blade; 324, wheel disc; 325, pull rope; 326, rotating assembly; 327, fixer; 328, rotating groove; 33, baffle; 40, closing device; 41, cover plate; 42, locking mechanism; 50, air-sand cutoff valve.

[0031] DETAILED DESCRIPTION It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0032] It should be noted that, unless otherwise specified, all the technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0033]

[0034] ​​​​In the present application, the orientation words such as "upper, lower, top, bottom" used without the opposite description are generally directed to the direction shown in the drawings, or directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner, outer" refers to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0035] In order to solve the problem of low efficiency of cleaning accumulated sand in the prior art, the present application provides a sand removal device and a sand removal method of the sand removal device.

[0036] As shown in Figures 1 to 6 The sand removal device includes a first separation device 10, a second separation device 20 and a sand discharge device 30, the first separation device 10 includes a first sand collecting cylinder 11, and the first separation device 10 is used to be connected with an air inlet pipeline; the second separation device 20 includes a second sand collecting cylinder 21, and the second separation device 20 is used to be connected with an air outlet pipeline, the second separation device 20 is communicated with the first separation device 10 to make the gas enter the air outlet pipeline from the air inlet pipeline; the sand discharge device 30 includes a connecting cylinder 31 and a sand discharge mechanism 32, both ends of the connecting cylinder 31 are communicated with the first sand collecting cylinder 11 and the second sand collecting cylinder 21 respectively to form a sand discharge space, at least a part of the sand discharge mechanism 32 is arranged in the sand discharge space, the connecting cylinder 31 has a sand discharge port 311, and the sand discharge mechanism 32 discharges the sand from the sand discharge port 311 out of the sand discharge space.

[0037] By arranging the first separation device 10 and the second separation device 20, the gas passing through the sand removal device can be sand-removed twice, and the sand obtained by the twice sand-removal is collected in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 respectively, the first sand collecting cylinder 11 and the second sand collecting cylinder 21 are communicated through the connecting cylinder 31, so that the first sand collecting cylinder 11 and the second sand collecting cylinder 21 have the linkage effect, and the sand is discharged through the sand discharge mechanism 32, which avoids the twice cleaning process of the first sand collecting cylinder 11 and the second sand collecting cylinder 21, greatly improves the efficiency of cleaning accumulated sand. In addition, since the first sand collecting cylinder 11 and the second sand collecting cylinder 21 are communicated, the accumulated sand or water in the interior will flow to each other, which will not cause the situation that one sand collecting cylinder is filled with too much sand and the other sand collecting cylinder is filled with less sand, improves the utilization rate of the equipment, at the same time, the downtime of the sand removal device is relatively reduced, and the working efficiency of sand removal of the gas is improved.

[0038] As shown in Figure 2As shown, the sand discharging mechanism 32 comprises a rotating shaft 321, a driving assembly 322 and two spiral blades 323. The rotating shaft 321 penetrates the sand discharging space, and the two ends of the rotating shaft 321 are connected with the inner wall surfaces of the first sand collecting cylinder 11 and the second sand collecting cylinder 21 respectively. The driving assembly 322 is arranged at the center of the rotating shaft 321, and is used for controlling the rotation of the rotating shaft 321. The two spiral blades 323 are wound from the two ends of the rotating shaft 321 to the direction close to the driving assembly 322, and the winding directions of the two spiral blades 323 are opposite. By penetrating the rotating shaft 321 through the entire sand discharging space, and winding the spiral blades 323 from the two ends of the rotating shaft 321 to the center respectively, and the winding directions of the two spiral blades 323 are opposite, the accumulated sand in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 can be discharged, and under the driving of the driving assembly 322, the rotation of the rotating shaft 321 makes the accumulated sand in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 pushed to the center of the rotating shaft 321 by the two spiral blades 323 respectively, which is beneficial to promote the discharge of the accumulated sand in the first sand collecting cylinder 11 and the second sand collecting cylinder 21.

[0039] As shown in Figure 3 The driving assembly 322 comprises a wheel disc 324 and a pull rope 325. The wheel disc 324 is fixed on the rotating shaft 321. One end of the pull rope 325 is fixed on the wheel disc 324, and the pull rope 325 is wound on the wheel disc 324 until the other end of the pull rope 325 faces the sand discharging port 311. By winding the pull rope 325 on the wheel disc 324 fixed on the rotating shaft 321, the pull rope 325 can be pulled at the sand discharging port 311, so as to drive the rotating shaft 321 to rotate, so as to discharge the sand and gravel. After the pull rope 325 is pulled out completely, the pull rope 325 can be wound on the wheel disc 324 again, and the pull rope 325 is pulled repeatedly, so as to continue discharging sand and gravel, and ensure that the sand and gravel is discharged completely.

[0040] Optionally, the wheel disc 324 is a magnetic member, and the pull rope 325 is a ferromagnetic member, so as to facilitate the winding of the pull rope 325 on the wheel disc 324 again.

[0041] As shown in Figure 2 The two ends of the rotating shaft 321 are provided with two rotating assemblies 326. The rotating assemblies 326 are fixed on the inner wall surfaces of the first sand collecting cylinder 11 or the second sand collecting cylinder 21, and can drive the rotating shaft 321 to rotate. By arranging the rotating assemblies 326, the rotating shaft 321 can be driven to rotate reversely by the rotating assemblies 326 after the pull rope 325 is pulled out completely, so as to make the pull rope 325 wound on the wheel disc 324 again, for discharging sand and gravel again.

[0042] As shown in Figure 5As shown in the figure, the rotating assembly 326 comprises a fixer 327, a rotating groove 328 and a torsion spring. The fixer 327 is fixed on the inner wall surface of the first sand collecting cylinder 11 or the second sand collecting cylinder 21, and the fixer 327 has a containing groove. The rotating groove 328 is coaxially arranged in the containing groove, and the end of the rotating shaft 321 is inserted into the rotating groove 328. The torsion spring is arranged between the fixer 327 and the rotating groove 328 to drive the rotating groove 328 to rotate relative to the fixer 327. By arranging the torsion spring between the fixer 327 and the rotating groove 328, and inserting the end of the rotating shaft 321 into the rotating groove 328, when the torsion spring is deformed, the rotating groove 328 can rotate relative to the fixer 327, thereby driving the rotating shaft 321 to rotate. During the process of pulling the rotating shaft 321 by the pull rope 325, the torsion spring is deformed, but is pulled by the pull rope 325. At this time, the rotating shaft 321 still maintains the original rotating direction. After the pull rope 325 is completely pulled out, the pulling force is removed, the potential energy stored in the torsion spring is released, and in the process of restoring the original shape of the torsion spring, the rotating groove 328 is driven to rotate relative to the fixer 327. The rotating groove 328 drives the rotating shaft 321 to rotate in the opposite direction, thereby driving the pull rope 325 to be rewound on the wheel disc 324.

[0043] Optionally, the rotating groove 328 is a spline groove, and the rotating shaft 321 is spline-connected with the rotating groove 328.

[0044] As shown in the figure, Figure 2 The spiral blade 323 is arranged between the driving assembly 322 and the two blocking pieces 33. By arranging the blocking pieces 33, the flowing sand and gravel can be prevented from directly impacting the driving assembly 322, thereby ensuring the normal operation of the sand discharging process.

[0045] As shown in the figure, Figure 3 and Figure 4 The sand discharging port 311 is located on the side surface of the connecting cylinder 31, and the central axis of the sand discharging port 311 is perpendicular to the extension direction of the sand discharging space. That is, the sand and gravel flows in parallel to the extension direction of the sand discharging space, and the sand discharging port 311 is arranged on the side surface of the connecting cylinder 31. In this way, the sand and gravel can be discharged from the side surface of the connecting cylinder 31 by flowing and gathering.

[0046] As shown in the figure, Figure 2As shown, the bottom surface of the connecting cylinder 31 comprises a first sand collecting section 312, a sand discharging section 313 and a second sand collecting section 314 connected in sequence, the sand discharging port 311 is arranged on the side surface of the sand discharging section 313, the first sand collecting section 312 is connected with the first sand collecting cylinder 11, the second sand collecting section 314 is connected with the second sand collecting cylinder 21, and the first sand collecting section 312 and the second sand collecting section 314 are arranged obliquely to the sand discharging section 313. When the sand in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 is pushed, the oblique first sand collecting section 312 and the second sand collecting section 314 can make the sand flow to the sand discharging section 313 more quickly, thereby improving the sand discharging efficiency. Arranging the sand discharging port 311 on the side surface of the sand discharging section 313 is beneficial to the smooth discharge of the sand after flowing and gathering to the sand discharging section 313.

[0047] As shown in Figure 3 and Figure 4 As shown, the bottom surface of the connecting cylinder 31 is arranged obliquely towards the sand discharging port 311, which can facilitate the quick discharge of the sand.

[0048] As shown in Figure 3 The sand removing device further comprises a sealing device 40 arranged outside the sand discharging port 311 to seal the sand discharging space. In this way, the sealing property of the device is ensured during the sand removing process of the sand removing device.

[0049] As shown in Figure 3 The sealing device 40 comprises a cover plate 41 and a locking mechanism 42, the outer periphery of the cover plate 41 is located outside the outer periphery of the sand discharging port 311, and the locking mechanism 42 is connected with the cover plate 41 and the connecting cylinder 31. In this way, the sand discharging port 311 can be completely covered by the cover plate 41 to avoid leakage of the sand removing device, and the cover plate 41 is connected with the connecting cylinder 31 by the locking mechanism 42 to ensure stable sealing.

[0050] As shown in Figure 3 The connecting cylinder 31 further comprises two flange edges 315 arranged on one side of the sand discharging port 311, the two flange edges 315 respectively extend from the opposite sides of the sand discharging port 311, and the cover plate 41 is connected with the flange edges 315. In this way, the connection stability of the connecting cylinder 31 and the cover plate 41 can be ensured, and the flange edges 315 are used to press and fix the cover plate 41 for convenient dismounting, thereby avoiding the workload of removing many bolts.

[0051] As shown in Figure 3 The outer periphery of the cover plate 41 coincides with the outer periphery of the flange edges 315, and the locking mechanism 42 covers the flange edges 315 and the cover plate 41.

[0052] Optionally, the locking mechanism 42 is a hydraulic locker.

[0053] As shown in Figure 6As shown, the present application also provides a sand discharging method of the sand removing device, which adopts the sand removing device of the present application, and the sand discharging method comprises the following steps: step S10, opening the closing device 40 of the sand removing device; step S20, pulling the pull rope 325 of the driving assembly 322 of the sand removing device to rotate the rotating shaft 321 of the sand discharging mechanism 32 of the sand discharging device 30 of the sand removing device; step S30, the spiral blade 323 of the sand discharging mechanism 32 gathers and discharges the sand and gravel to the sand discharging port 311 of the connecting cylinder 31 of the sand discharging device 30 of the sand removing device, and the process is repeated until the sand and gravel is completely discharged, and the pulling of the pull rope 325 is stopped; and step S40, the pull rope 325 is returned, and the reverse rotation assembly 326 of the rotating shaft 321 drives the rotating shaft 321 to rotate reversely, so that the pull rope 325 is wound around the wheel disc 324 of the driving assembly 322.

[0054] It should be noted that before discharging the sand, the sand removing device is kept closed in normal operation, and the sand removing device needs to be stopped before step S10, and the sand discharging method of the present application is used. In an optional embodiment, the locking mechanism 42 is opened, the cover plate 41 is separated from the connecting cylinder 31, the sand discharging port 311 is exposed, the pull rope 325 is found, the pull rope 325 is pulled, the rotating shaft 321 is driven to rotate, the spiral blade 323 pushes and discharges the sand and gravel in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 to the sand discharging port 311. After the pull rope 325 is completely pulled out, the pull rope 325 is returned, the reverse rotation assembly 326 drives the rotating shaft 321 to rotate reversely, so that the pull rope 325 is wound around the wheel disc 324 again to prepare for the next use. It should be noted that the length of the pull rope 325 can ensure that even if the first sand collecting cylinder 11 and the second sand collecting cylinder 21 are full of sand and gravel, complete discharge can be achieved.

[0055] Embodiment one

[0056] As shown, Figures 1 to 6 The first separating device 10 further comprises a first separator 12, and the second separating device 20 further comprises a second separator 22. The first separator 12 and the first sand collecting cylinder 11 are provided with a gas-sand cutoff valve 50, and the second separator 22 and the second sand collecting cylinder 21 are also provided with a gas-sand cutoff valve 50.

[0057] As shown, Figure 3 and Figure 4 The height of the sand discharging port 311 is the same as the height of the connecting cylinder 31.

[0058] As shown, Figure 2 The bottom surface of the first sand collecting cylinder 11 is provided with a first hole expanding section 111, and the first hole expanding section 111 is connected with the first sand collecting section 312. Similarly, the bottom surface of the second sand collecting cylinder 21 is provided with a second hole expanding section 211, and the second hole expanding section 211 is connected with the second sand collecting section 314. Such a design is further conducive to the sliding and gathering of the sand and gravel to the sand discharging section 313, thereby facilitating the discharge from the sand discharging port 311.

[0059] It should be noted that the inclination degree of the first sand collecting section 312 is greater than that of the first reaming section 111, and the inclination degree of the second sand collecting section 314 is greater than that of the second reaming section 211, so as to further improve the sliding speed of the sand and gravel.

[0060] Specifically, the wheel disc 324 is dumbbell-shaped, which is beneficial to keep the pull rope 325 stable when winding on the wheel disc 324.

[0061] It should be noted that when the sand removing device is installed, the connecting cylinder 31 is bolted but not fastened with the first sand collecting cylinder 11 and the second sand collecting cylinder 21, when the sand discharging device 30 is installed, the sand discharging mechanism 32 is first put into the sand discharging space, one end of the rotating shaft 321 is inserted into the fixator 327, the other end of the rotating shaft 321 is inserted into the other fixator 327 by the tool extending from the sand discharging port 311, the connecting cylinder 31 is fastened, and the cover plate 41 is fixed with the connecting cylinder 31 by the locking mechanism 42.

[0062] When sand discharging is needed, the gas sand cutting valve needs to be closed first, and then the sand and gravel is discharged by the sand discharging method provided by the application. It should be noted that the staff can manually hold the auxiliary tool to discharge the sand and gravel at the sand discharging port 311 outward, and a single person can complete the sand discharging operation.

[0063] From the above description, it can be seen that the above-mentioned embodiments of the application achieve the following technical effects:

[0064] 1. By arranging the first separation device 10 and the second separation device 20, the gas passing through the sand removing device can be sand removed twice, and the sand and gravel obtained by the two sand removing processes is collected in the first sand collecting cylinder 11 and the second sand collecting cylinder 21 respectively.

[0065] 2. The first sand collecting cylinder 11 and the second sand collecting cylinder 21 are communicated by the connecting cylinder 31, so that they have the effect of linkage, and the sand and gravel is discharged by the sand discharging mechanism 32, avoiding the two cleaning processes of the first sand collecting cylinder 11 and the second sand collecting cylinder 21, and greatly improving the efficiency of cleaning the accumulated sand.

[0066] 3. Since the first sand collecting cylinder 11 and the second sand collecting cylinder 21 are communicated, the accumulated sand or water inside will also flow to each other, which will not cause the situation that one sand collecting cylinder is filled with too much sand and the other sand collecting cylinder is filled with less sand, improving the utilization rate of the equipment, and the downtime of the sand removing device is also relatively reduced, improving the working efficiency of sand removing of the gas.

[0067] Obviously, the above-described embodiments are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the application.

[0068] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, as the scope of the exemplary embodiments of this application is limited only by the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Also, unless otherwise indicated herein, the materials described herein can be used in a variety of applications.

[0069] It should be noted that the terms "first", "second", and the like, as used herein do not necessarily have an ordinal meaning. Rather, such terms are used to distinguish different structures or steps from one another. Terms concerning descriptions of orientations such as "vertical", "horizontal", "top", "bottom", "upper", "lower", and the like are used herein for convenience to describe the exemplary embodiments of this application made in the context of the accompanying drawings. It is to be understood, however, that such terms are not to be construed as limiting the application, unless otherwise explicitly recited in the appended claims.

[0070] The preferred embodiments of the application are described herein with reference to the accompanying drawings, in which the same or similar elements in the drawings are referred to with the same reference numerals. The application is not limited to the preferred embodiments described herein, but can be practiced with modification and alteration within the scope of the present application. Accordingly, the specification and drawings are to be regarded in an illustrative, rather than a restrictive, sense.

Claims

1. A desanding apparatus, characterized in that, The utility model relates to a sand separating device, which comprises: a primary separating device (10) comprising a primary sand collecting cylinder (11), the primary separating device (10) being used in connection with an air inlet pipeline; a secondary separating device comprising a secondary sand collecting cylinder (21), the secondary separating device being used in connection with an air outlet pipeline, the secondary separating device being in communication with the primary separating device (10) to enable gas to pass from the air inlet pipeline to the air outlet pipeline; a sand discharging device (30) comprising a connecting cylinder (31) and a sand discharging mechanism (32), two ends of the connecting cylinder (31) being in communication with the primary sand collecting cylinder (11) and the secondary sand collecting cylinder (21) respectively to form a sand discharging space, at least a part of the sand discharging mechanism (32) being arranged in the sand discharging space, the connecting cylinder (31) having a sand discharging opening (311), and the sand discharging mechanism (32) discharging sand from the sand discharging opening (311) out of the sand discharging space; the sand discharging mechanism (32) comprising: a rotating shaft (321) penetrating through the sand discharging space, two ends of the rotating shaft (321) being connected with the inner wall surfaces of the primary sand collecting cylinder (11) and the secondary sand collecting cylinder (21) respectively; a driving assembly (322) arranged at the center of the rotating shaft (321), the driving assembly (322) being used to control the rotation of the rotating shaft (321); two helical blades (323) wound from the two ends of the rotating shaft (321) towards the driving assembly (322), the two helical blades (323) being wound in opposite directions.

2. The sand removal apparatus of claim 1, wherein, the driving assembly (322) comprising: a wheel disc (324) fixed on the rotating shaft (321); a pull rope (325) having one end fixed on the wheel disc (324), the pull rope (325) being wound around the wheel disc (324) until the other end of the pull rope (325) faces the sand discharging opening (311).

3. The sand removal apparatus of claim 2, wherein, the wheel disc (324) is a magnetic member, and the pull rope (325) is a ferromagnetic member.

4. The sand removal apparatus of claim 1, wherein, two rotating assemblies (326) are arranged at the two ends of the rotating shaft (321), the rotating assemblies (326) being fixed on the inner wall surfaces of the primary sand collecting cylinder (11) or the secondary sand collecting cylinder (21), and the rotating assemblies (326) being capable of driving the rotating shaft (321) to rotate.

5. The sand removal apparatus of claim 4, wherein, the rotating assembly (326) comprising: a fixer (327) fixed on the inner wall surface of the primary sand collecting cylinder (11) or the secondary sand collecting cylinder (21), the fixer (327) having a receiving groove; a rotating groove (328) coaxially arranged in the receiving groove, the end of the rotating shaft (321) being inserted into the rotating groove (328); a torsional spring arranged between the fixer (327) and the rotating groove (328) to drive the rotating groove (328) to rotate relative to the fixer (327).

6. The sand removal apparatus of claim 5, wherein, The rotating groove (328) is a spline groove, and the rotating shaft (321) is spline-connected with the rotating groove (328).

7. The sand removal apparatus of claim 1, wherein, The spiral blade (323) is arranged in a spaced manner with the driving assembly (322), and the sand discharging mechanism (32) further comprises two blocking pieces (33) fixed between the spiral blade (323) and the driving assembly (322).

8. The sand removal apparatus of any one of claims 1 to 7, wherein, The sand discharging port (311) is located on the side of the connecting cylinder (31), and the central axis of the sand discharging port (311) is perpendicular to the extension direction of the sand discharging space.

9. The sand removal apparatus of claim 8, wherein, The bottom surface of the connecting cylinder (31) comprises a first sand collecting section (312), a sand discharging section (313) and a second sand collecting section (314) connected in sequence, the sand discharging port (311) is arranged on the side of the sand discharging section (313), the first sand collecting section (312) is connected with the first-stage sand collecting cylinder (11), the second sand collecting section (314) is connected with the second-stage sand collecting cylinder (21), and the first sand collecting section (312) and the second sand collecting section (314) are arranged in an inclined manner towards the sand discharging section (313).

10. The sand removal apparatus of claim 8, wherein, The bottom surface of the connecting cylinder (31) is arranged in an inclined manner towards the sand discharging port (311).

11. The sand removal apparatus of any one of claims 1 to 7, wherein, The sand discharging device further comprises a sealing device (40) arranged outside the sand discharging port (311) to seal the sand discharging space.

12. The sand removal apparatus of claim 11, wherein, The sealing device (40) comprises: a cover plate (41), the outer periphery of the cover plate (41) is located outside the outer periphery of the sand discharging port (311); a locking mechanism (42) connected with the cover plate (41) and the connecting cylinder (31).

13. The sand removal apparatus of claim 12, wherein, The connecting cylinder (31) further comprises two flange edges (315) arranged on one side of the sand discharging port (311), the two flange edges (315) are respectively arranged on the opposite sides of the sand discharging port (311), and the cover plate (41) is connected with the flange edges (315).

14. The sand removal apparatus of claim 13, wherein, The outer periphery of the cover plate (41) coincides with the outer periphery of the flange edges (315), and the locking mechanism (42) is arranged to cover the flange edges (315) and the cover plate (41).

15. A sand discharge method of a sand discharging apparatus, characterized by, The sand discharging device comprises a driving assembly (322) comprising: a wheel disc (324) fixed on the rotating shaft (321); a pull rope (325) having one end fixed on the wheel disc (324), and being wound around the wheel disc (324) until the other end of the pull rope (325) is directed towards the sand discharging port (311); both ends of the rotating shaft (321) are provided with two rotating assemblies (326) fixed on the inner wall surface of the first-stage sand collecting cylinder (11) or the second-stage sand collecting cylinder (21), and the rotating assemblies (326) can drive the rotating shaft (321) to rotate; the sand discharging device further comprises a sealing device (40) arranged outside the sand discharging port (311) to seal the sand discharging space; the sealing device (40) comprises: a cover plate (41), the outer periphery of the cover plate (41) is located outside the outer periphery of the sand discharging port (311); a locking mechanism (42) connected with the cover plate (41) and the connecting cylinder (31). the connecting cylinder (31) further comprises two flange edges (315) arranged on one side of the sand discharging port (311), the two flange edges (315) are respectively arranged on the opposite sides of the sand discharging port (311), and the cover plate (41) is connected with the flange edges (315). the outer periphery of the cover plate (41) coincides with the outer periphery of the flange edges (315), and the locking mechanism (42) is arranged to cover the flange edges (315) and the cover plate (41). the sand discharging device comprises a driving assembly (322) comprising: a wheel disc (324) fixed on the rotating shaft (321); a pull rope (325) having one end fixed on the wheel disc (324), and being wound around the wheel disc (324) until the other end of the pull rope (325) is directed towards the sand discharging port (311); both ends of the rotating shaft (321) are provided with two rotating assemblies (326) fixed on the inner wall surface of the first-stage sand collecting cylinder (11) or the second-stage sand collecting cylinder (21), and the rotating assemblies (326) can drive the rotating shaft (321) to rotate; the sand discharging device further comprises a sealing device (40) arranged outside the sand discharging port (311) to seal the sand discharging space; The sand discharging method comprises: opening the closing device (40); pulling the pull rope (325) to rotate the rotating shaft (321); the spiral blade (323) of the sand discharging mechanism (32) gathers and discharges the sand to the sand discharging port (311) of the connecting cylinder (31) of the sand discharging device (30), until the sand is completely discharged, and the pulling of the pull rope (325) is stopped; the pull rope (325) is returned, the return assembly (326) drives the rotating shaft (321) to rotate reversely, so that the pull rope (325) is wound on the wheel disc (324).

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