High-pressure efficient fracturing wellhead device

Abstract

The utility model discloses a high-pressure efficient fracturing wellhead device which comprises a fracturing head, pressure pumps are connected to the upper end of the fracturing head in a bilateral symmetry mode, a connector is installed on each pressure pump, a rectangular insertion opening communicated with the interior is formed in the surface of each connector, and an installation plate is inserted into each rectangular insertion opening in a sliding mode. A mounting hole is formed in the position, located in the connector, of the mounting plate, a filter screen is fixedly mounted in the mounting hole, a sealing assembly is arranged on the mounting plate, and a locking assembly used for locking the mounting plate is arranged on the mounting plate. The petroleum fracturing device has the advantages that the filter screen arranged on the mounting plate can filter impurities in petroleum, so that the situation that the impurities enter the fracturing device to cause blockage is reduced, and normal use of the fracturing device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of oil drilling equipment, in particular to a high-pressure and high-efficiency fracturing wellhead device. Background Art

[0002] With the development of society, oil and gas extraction technology has become more mature, and the application of oil has become more extensive. However, for low-yield oil fields, fracturing technology is needed to increase the output of oil and gas fields. It is usually necessary to install a high-pressure and high-efficiency fracturing wellhead device at the wellhead to achieve high-pressure and high-flow injection, thereby improving the hydraulic efficiency of the fracturing wellhead device.

[0003] The existing wellhead device lacks a filtering device, which may cause impurities in the oil to enter the fracturing device during oil extraction, causing blockage and affecting the use of the fracturing device. Utility Model Content

[0004] The utility model aims to solve the following shortcomings in the prior art and proposes a high-pressure and high-efficiency fracturing wellhead device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-pressure and high-efficiency fracturing wellhead device comprises a fracturing head, wherein a pressure pump is symmetrically connected to the upper end of the fracturing head, and a connecting head is installed on the pressure pump via a connecting flange; a rectangular socket connected to the interior is provided on the surface of the connecting head, a mounting plate is slidably inserted in the rectangular socket, a mounting hole is provided at a portion of the mounting plate located in the connecting head, and a filter is fixedly installed in the mounting hole; a sealing assembly is provided on the mounting plate, and the sealing assembly is used to prevent oil from overflowing from the rectangular socket, and a locking assembly is provided on the mounting plate for locking itself.

[0007] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: an annular mounting groove is provided on the surface of the mounting plate, an annular circular groove is provided on the side wall of the mounting groove, a movable groove is provided on the inner wall of the circular groove, and a threaded hole connected to the movable groove is provided at one end of the mounting plate. The sealing assembly includes a sealing ring sleeved in the mounting groove, a movable ring slidably inserted in the circular groove, a movable block slidably installed in the movable groove and a threaded rod threadedly inserted in the threaded hole, one end of the threaded rod extends into the movable groove and is rotatably connected to the movable block, and the movable block is fixedly connected to the movable ring.

[0008] In order to better achieve the above purpose, the utility model adopts a further technical solution: one end of the threaded rod away from the moving block is fixedly connected to the adjusting block, and a plurality of anti-sliding blocks are fixedly installed on the adjusting block.

[0009] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: one end of the mounting plate is symmetrically provided with a slide groove, and the locking assembly includes two positioning rods respectively slidably installed in the two slide grooves, two positioning blocks symmetrically fixedly installed at one end of the mounting plate and a transmission component for driving the two positioning rods away from each other, and positioning holes are provided on the two positioning blocks.

[0010] In order to better achieve the above purpose, the utility model adopts a further technical solution: the transmission component includes a rectangular plate rotatably sleeved on the threaded rod and two support rods rotatably installed at both ends of the rectangular plate, and the end of the support rod away from the rectangular plate is rotatably connected to the surface of the positioning rod.

[0011] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: the circular groove is located in the rectangular socket, and the width of the moving groove is the same as the width of the moving block.

[0012] The advantages of the utility model are: the mounting plate is mounted on the connecting head through a locking assembly, so that the filter screen is installed in the connecting head; when in use, the filter screen arranged on the mounting plate can filter impurities in the oil, thereby reducing the occurrence of impurities entering the interior of the fracturing device and causing blockage, thereby ensuring the normal use of the fracturing device; when the mounting plate is mounted in the rectangular socket, the mutual cooperation of the threaded rod, the moving block, the moving ring and the sealing ring can reduce the gap between the mounting plate and the rectangular socket, thereby achieving better sealing and preventing oil from leaking out of the rectangular socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the high-pressure and high-efficiency fracturing wellhead device proposed by the utility model;

[0014] Figure 2 This is a three-dimensional structural schematic diagram of a connector in a high-pressure and high-efficiency fracturing wellhead device proposed by the utility model;

[0015] Figure 3 This is a schematic diagram of a three-dimensional partial cross-sectional structure of a mounting plate in a high-pressure and high-efficiency fracturing wellhead device proposed by the utility model;

[0016] Figure 4 This is a partial cross-sectional structural schematic diagram of the mounting plate in the high-pressure and high-efficiency fracturing wellhead device proposed by the utility model;

[0017] Figure 5 for Figure 2 A magnified view of the structure at center;

[0018] Figure 6 for Figure 3 Enlarged view of the structure at point B in the middle.

[0019] In the figure: 1 fracturing head, 2 pressure pump, 3 connecting head, 4 mounting plate, 5 filter screen, 6 mounting groove, 7 circular groove, 8 movable groove, 9 sealing ring, 10 movable ring, 11 movable block, 12 threaded rod, 13 adjusting block, 14 positioning rod, 15 positioning block, 16 rectangular plate, 17 support rod. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Reference Figure 1-Figure 6 As shown, a high-pressure and high-efficiency fracturing wellhead device comprises a fracturing head 1, a pressure pump 2 is symmetrically connected to the upper end of the fracturing head 1, a connector 3 is installed on the pressure pump 2 through a connecting flange, and the pressure pumps 2 on both sides can be arranged to simultaneously inject fracturing fluid into the wellbore, so as to achieve high-pressure and high-flow injection, thereby improving the hydraulic efficiency of the fracturing wellhead device, a rectangular socket connected to the interior is provided on the surface of the connector 3, a mounting plate 4 is slidably inserted in the rectangular socket, a mounting hole is provided at the portion of the mounting plate 4 located in the connector 3, a filter screen 5 is fixedly installed in the mounting hole, the filter screen 5 is installed on the connector 3 through the mounting plate 4, and the filter screen 5 is located inside the connector 3, when the oil passes through the connector 3, the impurities in the oil will be filtered out by the filter screen 5, so that the impurities entering the interior of the fracturing device and causing blockage are reduced, thereby ensuring the normal use of the fracturing device.

[0022] A sealing assembly is provided on the mounting plate 4, and the sealing assembly is used to prevent oil from overflowing from the rectangular socket. A locking assembly for locking itself is provided on the mounting plate 4. An annular mounting groove 6 is provided on the surface of the mounting plate 4, and an annular circular groove 7 is provided on the side wall of the mounting groove 6. A moving groove 8 is provided on the inner wall of the circular groove 7. A threaded hole connected to the moving groove 8 is provided at one end of the mounting plate 4. The sealing assembly includes a sealing ring 9 sleeved in the mounting groove 6, a moving ring 10 slidably inserted in the circular groove 7, a moving block 11 slidably installed in the moving groove 8, and a threaded rod 12 threadedly inserted in the threaded hole, one end of the threaded rod 12 extends into the moving groove 8 and is rotatably connected to the moving block 11, the moving block 11 is fixedly connected to the moving ring 10, and one end of the threaded rod 12 away from the moving block 11 is fixedly connected to the adjusting block 13, and a plurality of anti-sliding blocks are fixedly installed on the adjusting block 13, the circular groove 7 is located in the rectangular socket, and the width of the moving groove 8 is the same as the width of the moving block 11.

[0023] When the mounting plate 4 is inserted into the rectangular notch, the mounting groove 6 provided on the mounting plate 4 will move into the rectangular notch, and at the same time, the sealing ring 9 in the mounting groove 6 will contact the inner wall of the rectangular notch. The sealing ring 9 is made of rubber. Then, the threaded rod 12 can be driven to rotate by rotating the adjusting block 13. Under the action of the threaded hole, the moving block 11 can be driven to move in the direction of the moving ring 10, and at the same time, the moving ring 10 can be driven to move in the direction of the sealing ring 9, and the sealing ring 9 can be squeezed from one side of the sealing ring 9. Since the sealing ring 9 is sleeved in the annular mounting groove 6, when the sealing ring 9 is squeezed, under the limitation of the mounting groove 6, the sealing ring 9 will be deformed to the outside of the mounting groove 6, and the sealing ring 9 will become thicker, so that the sealing ring 9 is in tight contact with the inner wall of the rectangular socket, reducing the gap between the mounting plate 4 and the rectangular socket, achieving better sealing, and preventing oil from seeping out of the rectangular socket.

[0024] One end of the mounting plate 4 is symmetrically provided with sliding grooves, and the locking assembly includes two positioning rods 14 slidably installed in the two sliding grooves, two positioning blocks 15 symmetrically fixedly installed at one end of the mounting plate 4, and a transmission component for driving the two positioning rods 14 away from each other. Positioning holes are provided on the two positioning blocks 15, and the transmission component includes a rectangular plate 16 rotatably sleeved on the threaded rod 12 and two support rods 17 rotatably installed at both ends of the rectangular plate 16, and one end of the support rod 17 away from the rectangular plate 16 is rotatably connected to the surface of the positioning rod 14.

[0025] When the mounting plate 4 is inserted into the rectangular socket, while the threaded rod 12 is rotated, the threaded rod 12 will drive the rectangular plate 16 to move toward the mounting plate 4. During the movement of the rectangular plate 16, the two positioning rods 14 will be driven away from each other through the two support rods 17. During the process of moving away, one end of the positioning rod 14 will be inserted into the positioning hole provided on the positioning block 15. Under the action of the positioning rod 14 and the positioning block 15, the mounting plate 4 can be limited to achieve the installation of the mounting plate 4. At the same time, during the installation process, the sealing ring 9 can be squeezed, which is easy to operate and has a compact structure.

[0026] In the utility model, the filter screen 5 is installed on the connector 3 through the mounting plate 4, and the filter screen 5 is inside the connector 3. When the oil passes through the connector 3, the impurities in the oil will be filtered out by the filter screen 5, thereby reducing the occurrence of impurities entering the interior of the fracturing device and causing blockage, thereby ensuring the normal use of the fracturing device.

Claims

1. A high-pressure and high-efficiency fracturing wellhead device, comprising a fracturing head (1), characterized in that: The upper end of the fracturing head (1) is symmetrically connected to a pressure pump (2), and a connecting head (3) is installed on the pressure pump (2) via a connecting flange; a rectangular socket connected to the interior is provided on the surface of the connecting head (3), a mounting plate (4) is slidably inserted in the rectangular socket, a mounting hole is provided at a portion of the mounting plate (4) located in the connecting head (3), and a filter screen (5) is fixedly installed in the mounting hole; a sealing component is provided on the mounting plate (4), and the sealing component is used to prevent oil from overflowing from the rectangular socket, and a locking component for locking the mounting plate (4) is provided on the mounting plate (4).

2. The high-pressure and high-efficiency fracturing wellhead device according to claim 1, characterized in that: The surface of the mounting plate (4) is provided with an annular mounting groove (6), the side wall of the mounting groove (6) is provided with an annular circular groove (7), the inner wall of the circular groove (7) is provided with a movable groove (8), one end of the mounting plate (4) is provided with a threaded hole connected to the movable groove (8), the sealing assembly comprises a sealing ring (9) sleeved in the mounting groove (6), a movable ring (10) slidably inserted in the circular groove (7), a movable block (11) slidably installed in the movable groove (8) and a threaded rod (12) threadedly inserted in the threaded hole, one end of the threaded rod (12) extends into the movable groove (8) and is rotatably connected to the movable block (11), and the movable block (11) is fixedly connected to the movable ring (10).

3. The high-pressure and high-efficiency fracturing wellhead device according to claim 2, characterized in that: One end of the threaded rod (12) away from the moving block (11) is fixedly connected to the adjusting block (13), and a plurality of anti-sliding blocks are fixedly mounted on the adjusting block (13).

4. The high-pressure and high-efficiency fracturing wellhead device according to claim 2, characterized in that: One end of the mounting plate (4) is symmetrically provided with sliding grooves, and the locking assembly comprises two positioning rods (14) respectively slidably mounted in the two sliding grooves, two positioning blocks (15) symmetrically fixedly mounted on one end of the mounting plate (4), and a transmission component for driving the two positioning rods (14) to move away from each other, and positioning holes are provided on the two positioning blocks (15).

5. The high-pressure and high-efficiency fracturing wellhead device according to claim 4, characterized in that: The transmission component comprises a rectangular plate (16) rotatably sleeved on the threaded rod (12) and two support rods (17) rotatably mounted on both ends of the rectangular plate (16); one end of the support rod (17) away from the rectangular plate (16) is rotatably connected to the surface of the positioning rod (14).

6. The high-pressure and high-efficiency fracturing wellhead device according to claim 2, characterized in that: The circular groove (7) is located in the rectangular socket, and the width of the moving groove (8) is the same as the width of the moving block (11).

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