Efficient well washing equipment for geothermal well and well washing process method of efficient well washing equipment

Abstract

The invention discloses efficient well washing equipment for a geothermal well and a well washing process method of the efficient well washing equipment, and belongs to the technical field of well washing equipment. Comprising a main rod, a sealing mechanism is arranged at the outer end of the main rod, the end face of the main rod is connected with a flushing mechanism, the flushing mechanism is connected with a sewage discharging mechanism, the sealing mechanism comprises a sleeve, a plurality of turning rods, a plurality of hydraulic telescopic rods, an air pump, an annular plate and an adjusting motor, and inner plates are arranged in the turning rods; the end faces of the multiple inner plates are each connected with two fan-shaped air bags, four pulling springs are arranged in each fan-shaped air bag, and two sliding blocks are arranged on the inner wall of the sleeve. By means of the adjustable fan-shaped air bag, the device is suitable for geothermal wells with different diameters, water flow sprayed out at a high speed carries bubbles to impact the wall of the geothermal well, the flushing effect is effectively improved, and by means of the pressurization characteristic of the Venturi tube, large chippings can be broken, and the blocking risk is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of well washing equipment, more particularly to a high-efficiency well washing equipment for geothermal wells and a well washing process method thereof. BACKGROUND

[0002] A geothermal well is a key engineering channel for exploiting underground heat energy, and high-temperature geothermal water or steam is transported to the ground through the wellbore structure for utilization. In the long-term operation, the wellbore and the near-wellbore zone will produce complex plugging problems such as mineral scaling, corrosion product deposition, fine particle plugging and biofilm attachment due to temperature and pressure changes, chemical reactions and microbial action, resulting in a decrease in heat production and an increase in energy consumption, and even causing the geothermal well to fail. In order to restore its productivity and service life, well washing operation must be carried out.

[0003] Traditional well washing relies on the combination of equipment using single technologies such as high-pressure water jet, chemical agent injection or mechanical scraping, but these methods often have poor synergy and low intelligence, making it difficult to cope with the complexity of geothermal well plugging. To solve these problems, the present application proposes a new type of high-efficiency well washing equipment for geothermal wells and a well washing process method thereof. SUMMARY

[0004] The purpose of the present application is to provide a high-efficiency well washing equipment for geothermal wells and a well washing process method thereof to solve the problems raised in the background art: facilitating use in geothermal wells of different diameters, effectively improving the flushing effect on the well wall and reducing the possibility of plugging.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: A high-efficiency well washing equipment for geothermal wells comprises a main rod, a sealing mechanism is arranged at the outer end of the main rod, a flushing mechanism is connected to the end face of the main rod, and a sewage discharge mechanism is connected to the flushing mechanism. The sealing mechanism comprises a sleeve, a plurality of turning rods, a plurality of hydraulic telescopic rods, an air pump, a ring plate and an adjusting motor, the inside of each of the plurality of turning rods is provided with an inner plate, the end face of each of the plurality of inner plates is connected to two fan-shaped air bags, the inside of each of the plurality of fan-shaped air bags is provided with four pulling springs, the inner wall of the sleeve is provided with two sliding blocks, the inside of each of the two sliding blocks is provided with a pressing block, the inner wall of the ring plate is provided with two inclined blocks, and each of the two inclined blocks is connected to an embedded block. The flushing mechanism comprises a flushing motor and four air bubble makers, the inside of the flushing motor is provided with a hollow shaft, the inside of the hollow shaft is provided with a tapered head pipe, the end face of the hollow shaft is connected to a stepped ball head, and the end face of the stepped ball head is provided with a plurality of flushing heads. The sewage discharge mechanism comprises a base and a Venturi tube, and the end face of the base is provided with a flexible disc.

[0006] By adopting the above technical solution, and through the adjustable fan-shaped airbag, it is applicable to geothermal wells of different diameters; The high-speed jet of water carries air bubbles that impact the walls of the geothermal well, effectively improving the flushing effect. By utilizing the pressurization characteristics of the venturi tube, large pieces of debris can be broken up, reducing the risk of clogging.

[0007] Preferably, a water pipe is installed inside the main rod, a sewage pipe is installed inside the water pipe, and two sliding grooves are opened at the outer end of the main rod.

[0008] By adopting the above technical solution, the sewage pipe is set inside the water pipe. Water can be flushed into the flushing mechanism through the water pipe to flush the inside of the geothermal well, while sewage can be discharged through the sewage pipe. Moreover, the position of the sealing mechanism on the main rod can be adjusted by the slider.

[0009] Preferably, the outer end of the sleeve is provided with multiple placement slots, and multiple flip rods are respectively disposed in the multiple placement slots. The inner wall of the flip rod is provided with an air groove, and each of the multiple flip rod end faces is provided with a connector. The multiple hydraulic telescopic rods are respectively connected to the multiple connectors.

[0010] By adopting the above technical solution, the hydraulic telescopic rod pulls the tilting rod through the connecting parts, so that the tilting rod can leave the placement groove and open from top to bottom to fit into the interior of geothermal wells of different diameters.

[0011] Preferably, each of the inner plate end faces is provided with a plurality of communicating grooves, each of the placement grooves inner walls is provided with holes, and each of the hydraulic telescopic rods is respectively disposed inside the plurality of holes.

[0012] By adopting the above technical solution, air can enter the fan-shaped airbag through the connecting groove opened on the inner plate, allowing the fan-shaped airbag to inflate and form a seal.

[0013] Preferably, each of the multiple placement slots has two connection holes on its inner wall, each of the multiple connection holes has a vertical pipe inside, and an air ring groove is formed between the multiple slots. The air pump is connected to the air ring groove through a pipe, and the multiple vertical pipes are respectively connected to the multiple air grooves.

[0014] By adopting the above technical solution, the air pump fills the air ring groove with air, and the gas enters the air groove through the vertical pipe. The gas inside the air groove enters the fan-shaped air bag through the connecting groove.

[0015] Preferably, the inner wall of the sleeve is provided with an adjusting ring groove, the ring plate is disposed inside the adjusting ring groove, the end face of the ring plate is provided with a toothed plate, the output end of the adjusting motor is connected to a toothed block, the toothed block and the toothed plate are meshed and connected, and the two embedded blocks are respectively connected to the four extrusion blocks.

[0016] By adopting the above technical solution, the starting adjustment motor drives the toothed block to rotate. The rotating toothed block drives the toothed plate to move through meshing. The toothed plate drives the ring plate to move. The ring plate squeezes the embedded block through the inclined block. The embedded block is pressed between the two squeezing blocks, so that the squeezing block is pressed into the inside of the slide groove to form a fixed position.

[0017] Preferably, the flushing motor end face is provided with a frame, the stepped ball head is disposed inside the frame, and four sub-blocks are disposed between the hollow shaft and the conical tube.

[0018] By adopting the above technical solution, the flushing motor is started. The output shaft of the flushing motor is the central shaft, which drives the stepped ball head to rotate, forming a rotary flushing.

[0019] Preferably, the stepped ball head is provided with an outer tube, and the outer tube is provided with an inner tube, and the four bubble generators are all located at the outer end of the outer tube.

[0020] By adopting the above technical solution, the flushing water is between the outer pipe and the inner pipe, the sewage is discharged from the inner pipe, and the bubble generator fills the inside of the stepped ball head with bubbles.

[0021] Preferably, the base end face is provided with multiple arc grooves, the venturi tube end face is provided with a connecting tube, the outer end of the connecting tube is provided with a connecting seat, and three support rods are provided between the connecting seat and the base.

[0022] By adopting the above technical solution, the connecting seat and the sewage pipe are connected and set. The connecting seat is fixed on the base by the support rod. The bottom of the base is provided with an arc groove, which allows water to enter the interior of the base and finally enter the interior of the Venturi tube.

[0023] A high-efficiency well-washing process for geothermal wells includes the following steps: Step 1: Lower the device into the geothermal well using a hoisting frame; Step 2: Start the hydraulic telescopic rod to pull the flip bar open and fit against the geothermal well wall. Then start the air pump to inflate the fan-shaped airbags through the inner plate, so that the fan-shaped airbags inflate and come into contact with each other to form a seal inside the geothermal well. Step 3: Water is injected into the flushing mechanism through the water pipe. The water passes through the bubble generator and enters the interior of the stepped ball head. The water with bubbles is impacted by the flushing head onto the geothermal well wall. At the same time, the flushing motor drives the stepped ball head to rotate. Step 4: The continuously descending main rod will drive the sewage discharge mechanism and flushing mechanism to descend synchronously with the main rod, forming a top-down flushing process; Step 5: The continuous flushing and injection of water will cause the sealed geothermal well to expand. The expanding gas will draw the sewage into the sewage discharge mechanism and eventually discharge it through the sewage pipe. Step Six: Once the drain pipe discharges clean water, turn off the water supply. Step 7: The air inside the fan-shaped airbag is extracted by the air pump. The fan-shaped airbag is pulled into the flip bar by the pull spring. The hydraulic telescopic rod pushes the flip bar back into the placement slot. Step 8: Use a gantry to lift the main rod away from the geothermal well, completing the well washing process.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1) When using this well cleaning equipment, start the hydraulic telescopic rod to pull the flip bar to open and fit against the geothermal well wall. After the fit is completed, start the air pump to inflate the fan-shaped airbags. The airbags inflate and fit together, thus forming a seal on the bottom of the geothermal well. The adjustable fan-shaped airbags are suitable for geothermal wells of different diameters. This sealing structure can avoid affecting the upper section of the well barrel during the cleaning process and reduce the radial diffusion of the cleaning capacity.

[0025] 2) When using this well cleaning equipment, start the flushing motor to drive the stepped ball head to rotate. The high-speed rotation of the stepped ball head makes the water sprayed from the flushing head have a stronger impact force. In addition, the bubble generator inside the stepped ball head will create bubbles. The high-speed water jet carries the bubbles and impacts the geothermal well wall. When the bubbles burst, they will generate impact, effectively improving the flushing effect on the well wall.

[0026] 3) When this well cleaning equipment is in use, the flexible disc catches the debris falling from above when the sewage discharge mechanism enters the geothermal well. Moreover, the soft flexible disc can fit into geothermal wells of different diameters. After the sewage is squeezed into the Venturi tube, the pressurization characteristics of the Venturi tube can break up large pieces of debris, reduce the risk of blockage, and make the sewage discharge speed faster. Attached Figure Description

[0027] Figure 1 This is an isometric view of the present invention; Figure 2 This is a schematic diagram of the sealing mechanism of the present invention from an axonal perspective; Figure 3 This is a cross-sectional axial view of the sealing mechanism of the present invention; Figure 4 This is a schematic diagram of the axial side of the sleeve of the present invention; Figure 5 This is a top-section axial view of the flip rod of the present invention; Figure 6 This is an axial side view of the ring plate of the present invention; Figure 7 This is an axonal view of the rinsing mechanism of the present invention; Figure 8 This is a cross-sectional axial view of the rinsing mechanism of the present invention; Figure 9 This is an isometric view of the sewage discharge mechanism of the present invention.

[0028] Explanation of the numbers in the diagram: 1. Main rod; 2. Slide groove; 3. Water pipe; 4. Drain pipe; 5. Sealing mechanism; 6. Flushing mechanism; 7. Drainage mechanism; 501. Sleeve; 502. Placement groove; 503. Flip rod; 504. Inner plate; 505. Fan-shaped airbag; 506. Connecting groove; 507. Hole groove; 508. Connecting hole; 509. Hydraulic telescopic rod; 510. Air ring groove; 511. Air pump; 512. Adjusting ring groove; 513. Slider; 514. Embedded block; 515. Adjusting motor; 516. Air groove; 517. Connecting piece; 51 8. Extrusion block; 519. Pulling spring; 520. Ring plate; 521. Toothed plate; 522. Inclined block; 523. Toothed block; 524. Vertical tube; 601. Flushing motor; 602. Hollow shaft; 603. Conical tube; 604. Frame; 605. Stepped ball head; 606. Flushing head; 607. Inner tube; 608. Sub-block; 609. Outer tube; 610. Bubble maker; 701. Connecting seat; 702. Connecting pipe; 703. Support rod; 704. Venturi tube; 705. Flexible disc; 706. Base; 707. Arc groove. Detailed Implementation

[0029] Example 1, please refer to Figure 1 A high-efficiency well cleaning device for geothermal wells includes a main rod 1, a sealing mechanism 5 at the outer end of the main rod 1, a flushing mechanism 6 connected to the end face of the main rod 1, and a sewage discharge mechanism 7 connected to the flushing mechanism 6. The sealing mechanism 5 forms a seal, and the impact mechanism flushes the inside of the geothermal well. The negative pressure formed allows the sewage to be discharged from the sewage discharge mechanism 7.

[0030] Specifically, a water pipe 3 is installed inside the main rod 1, a sewage pipe 4 is installed inside the water pipe 3, and two sliding grooves 2 are opened at the outer end of the main rod 1.

[0031] Furthermore, the sealing mechanism 5 is slidably sleeved on the outer end face of the main rod 1, the flushing mechanism 6 is fixedly installed on the lower end face of the main rod 1, the sewage discharge mechanism 7 is rotatably installed on the lower end face of the flushing mechanism 6, the water pipe 3 is fixedly installed on the inner wall of the main rod 1, the sewage discharge pipe 4 is fixedly installed inside the water pipe 3, and the upper bend of the sewage discharge pipe 4 passes through the water pipe 3.

[0032] The steps of using this invention are as follows: the main rod 1 is lifted by the hanger and placed into the geothermal well. The sealing mechanism 5 is activated to seal the geothermal well. Water is injected into the flushing mechanism 6 through the water pipe 3. The rotating flushing mechanism 6 flushes the interior of the chamber created by the sealing mechanism 5. Because water is continuously injected, the water will be discharged from the sewage discharge mechanism 7 and finally discharged through the sewage discharge pipe 4.

[0033] Example 2, please refer to Figures 2 to 6The difference from Embodiment 1 is that the sealing mechanism 5 includes a sleeve 501, multiple flip rods 503, multiple hydraulic telescopic rods 509, an air pump 511, an annular plate 520, and an adjusting motor 515. Each of the multiple flip rods 503 has an inner plate 504 inside, and each of the inner plates 504 has two fan-shaped airbags 505 connected to its end face. Each of the fan-shaped airbags 505 has four tension springs 519 inside. The inner wall of the sleeve 501 has two sliders 513, and each of the two sliders 513 has a pressing block 518 inside. The inner wall of the annular plate 520 has two inclined blocks 522, and each of the two inclined blocks 522 is connected to an embedding block 514. The adjustable fan-shaped airbags 505 make it easy to use in geothermal wells of different diameters.

[0034] Specifically, the outer end of the sleeve 501 has multiple placement slots 502, and multiple flip rods 503 are respectively disposed inside the multiple placement slots 502. The inner wall of the flip rod 503 has an air groove 516, and the end face of each of the multiple flip rods 503 is provided with a connector 517. Multiple hydraulic telescopic rods 509 are respectively connected to the multiple connectors 517. The end face of each of the multiple inner plates 504 has multiple connecting slots 506, and the inner wall of each of the multiple placement slots 502 has a hole slot 507. The multiple hydraulic telescopic rods 509 are respectively disposed inside the multiple hole slots 507, and the inner wall of each of the multiple placement slots 502 has two connecting holes 5. 08. Each of the multiple connecting holes 508 has a vertical pipe 524 inside. An air ring groove 510 is opened between the multiple hole slots 507. An air pump 511 is connected to the air ring groove 510 through a pipe. The multiple vertical pipes 524 are connected to the multiple air grooves 516 respectively. An adjusting ring groove 512 is opened on the inner wall of the sleeve 501. A ring plate 520 is set inside the adjusting ring groove 512. A toothed plate 521 is set on the end face of the ring plate 520. A toothed block 523 is connected to the output end of the adjusting motor 515. The toothed block 523 and the toothed plate 521 are meshed. Two embedded blocks 514 are connected to four extrusion blocks 518 respectively.

[0035] Furthermore, the inner plate 504 is fixedly positioned in the middle of the inside of the flip rod 503; two fan-shaped airbags 505 are fixedly positioned on both sides of the inner plate 504; four tension springs 519 are equidistantly fixed between the fan-shaped airbags 505 and the plate, with the tension springs 519 becoming shorter closer to the inner ring; two sliders 513 are fixedly positioned in the middle of the inner walls on both sides of the sleeve 501; two extrusion blocks 518 are slidably positioned on the front and rear inner walls of the sliders 513; and two inclined blocks 522... Equivalently fixed on the inner wall of the ring plate 520, the embedded block 514 is slidably disposed between the two extrusion blocks 518, and the embedded block 514 and the inclined block 522 are slidably connected. Multiple placement slots 502 are equidistantly opened on the upper side of the outer end face of the sleeve 501. The flip rod 503 is hinged to the bottom surface of the placement slot 502. The air groove 516 is opened in the middle of the rear inner wall of the flip rod 503. The connecting piece 517 is fixedly disposed on the lower end face of the flip rod 503 inside the placement slot 502. The hydraulic telescopic rod 509 is fixedly disposed on... A plurality of connecting grooves 506 are equidistantly formed on both sides of the inner plate 504, located on the lower end face of the connector 517. A slot 507 is formed in the middle of the bottom surface of the placement groove 502, near the front side. Two connecting holes 508 are formed on both sides of the bottom surface of the placement groove 502. Two vertical pipes 524 are fixedly installed inside the two connecting holes 508. An air ring groove 510 is formed between the bottom surfaces of the plurality of slots 507. An air pump 511 is fixedly installed on one side of the sleeve 501, near the lower side. The air pump 511 delivers... The inlet end passes through the sleeve 501 via a pipe. The upper end of the vertical ring is embedded in the air groove 516. The adjusting ring groove 512 is opened between the inner walls of both sides of the sleeve 501. The ring plate 520 is slidably disposed in the adjusting ring groove 512. The toothed plate 521 is fixedly disposed on one side of the lower end face of the ring plate 520. The adjusting motor 515 is fixedly disposed on the lower side of the other side of the sleeve 501. The toothed block 523 is fixedly disposed at the output end of the adjusting motor 515. The two sliders 513 are slidably disposed in the two sliding grooves 2 respectively.

[0036] The steps of using this invention are as follows: After the sealing mechanism 5 enters the geothermal well, the hydraulic telescopic rod 509 is activated to pull the tilting rod 503 through the connector 517. The tilting rod 503 slowly descends and adheres to the geothermal well wall. The air pump 511 is activated to inflate the air ring groove 510. The gas inside the air ring groove 510 enters the air groove 516 through the vertical pipe 524. The gas inside the air groove 516 enters the fan-shaped airbag 505 through the inner plate 504. The gas pushes the fan-shaped airbag 505 to inflate, and due to the basic shape of the fan-shaped airbag 505, it moves to one side and opens. The opened fan-shaped airbags 505 adhere to each other to form a seal. In this state, the sealing mechanism 5 has formed a fixed connection with the geothermal well. At this time, the regulating motor 515 is activated to drive the toothed block 523 to rotate. 3. The toothed plate 521 drives the ring plate 520 to rotate, causing the inclined block 522 to release the pressure on the embedded block 514. At this time, the pressing block 518 releases the pressure and fixation on the inner wall of the slide groove 2, and the main rod 1 can continue to move downward. After cleaning is completed, the adjusting motor 515 is restarted, causing the ring plate 520 to move in the opposite direction. At this time, the inclined block 522 presses the embedded block 514, and the embedded block 514 inserts between the pressing blocks 518, so that the pressing blocks 518 are pressed inside the slide groove 2, and the main rod 1 is fixed again. Then, the air pump 511 is started to draw air from inside the air ring groove 510. The reverse flow of gas causes the fan-shaped airbag 505 to re-enter the flip rod 503 under the traction of the pull spring 519. Then, the hydraulic telescopic rod 509 pushes the flip rod 503 back into the placement groove 502.

[0037] Example 3, please refer to Figure 7 and Figure 8 The difference from embodiment 2 is that the flushing mechanism 6 includes a flushing motor 601 and four bubble generators 610. The flushing motor 601 has a hollow shaft 602 inside, and a conical tube 603 inside the hollow shaft 602. A stepped ball head 605 is connected to the end face of the hollow shaft 602, and multiple flushing heads 606 are provided on the end face of the stepped ball head 605. The high-speed water jet carries bubbles to impact the geothermal well wall, effectively improving the flushing effect.

[0038] Specifically, a frame 604 is provided on the end face of the flushing motor 601, a stepped ball head 605 is provided inside the frame 604, four sub-blocks 608 are provided between the hollow shaft 602 and the conical tube 603, an outer tube 609 is provided inside the stepped ball head 605, an inner tube 607 is provided inside the outer tube 609, and four bubble generators 610 are all provided at the outer end of the outer tube 609.

[0039] Furthermore, the flushing motor 601 is fixedly mounted on the lower end face of the main rod 1, the hollow shaft 602 is the output shaft of the flushing motor 601, the conical tube 603 is fixedly mounted inside the hollow shaft 602 through the sub-block 608, the bottom of the conical tube 603 is inserted into the drain pipe 4, the frame 604 is fixedly mounted on the lower end face of the flushing motor 601, the stepped ball head 605 is rotatably mounted on the lower inner wall of the frame 604, and multiple flushing heads 606 are equidistantly embedded on the outer end of the stepped ball head 605. On the stepped surface, the upper flushing head 606 is inclined upward, the lower flushing head 606 is inclined downward, and the middle flushing head 606 is parallel. The outer tube 609 is fixedly installed between the inner bottom surface and the inner top surface of the stepped ball head 605. The inner tube 607 passes through the stepped ball head 605. A hole is opened on the upper surface of the stepped ball head 605 to allow clean water in the hollow shaft 602 to enter. Four bubble generators 610 are fixedly installed at equal intervals in the middle position of the outer end face of the outer tube 609.

[0040] The steps of using this invention are as follows: Start the flushing motor 601 to drive the stepped ball head 605 to rotate. Clean water enters from the hollow shaft 602 and reaches the inside of the outer tube 609. Then, gas passes through the bubble generator 610 and enters the inside of the stepped ball head 605. Sewage enters the inner tube 607 and then enters the conical tube 603 and is finally discharged. The clean water carrying the bubbles will be sprayed out from the flushing head 606 and impact the well wall of the geothermal well to form a cleaning of the well wall. The bubbles carried in the clean water will burst, which increases the cleaning force on the geothermal well wall.

[0041] Example 4, please refer to Figure 9 The difference from embodiment 3 is that the sewage discharge mechanism 7 includes a base 706 and a venturi tube 704. A flexible disc 705 is provided on the end face of the base 706. Because of the characteristics of the venturi tube 704, it can pressurize the sewage, break up large pieces of debris, and reduce the possibility of blockage.

[0042] Specifically, the end face of the base 706 is provided with multiple arc grooves 707, the end face of the venturi tube 704 is provided with a connecting tube 702, the outer end of the connecting tube 702 is provided with a connecting seat 701, and three support rods 703 are provided between the connecting seat 701 and the base 706.

[0043] Furthermore, the flexible disk 705 is fixedly installed on the outer ring of the upper end face of the base 706, the venturi tube 704 is installed inside the flexible disk 705, multiple arc grooves 707 are equidistantly opened on the lower end face of the base 706, the connecting tube 702 is fixedly installed in the middle of the upper end face of the venturi tube 704, the connecting seat 701 is rotatably installed on the upper side of the outer end face of the connecting tube 702, three support rods 703 are equidistantly fixed between the outer end face of the connecting seat 701 and the upper end face of the base 706, and the inner tube 607 is rotatably sleeved on the inner wall of the connecting seat 701.

[0044] The steps of using this invention are as follows: The main rod 1 drives the sewage discharge mechanism 7 to the bottom of the geothermal well. The negative pressure generated inside the working chamber will cause the sewage to enter the interior of the venturi tube 704 from below. Due to the acceleration of the venturi tube 704, large impurities in the sewage are broken up and then discharged through the connecting pipe 702. The sewage and impurities washed above will fall onto the flexible disc 705 and then slide into the interior of the base 706.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency well washing device for geothermal wells, comprising a main rod (1), characterized in that: The main rod (1) outer end is provided with sealing mechanism (5), the main rod (1) end surface is connected with flushing mechanism (6), the flushing mechanism (6) is connected with blowdown mechanism (7); The sealing mechanism (5) includes sleeve (501), a plurality of turnover rods (503), a plurality of hydraulic telescopic rods (509), air pump (511), ring plate (520) and adjusting motor (515), a plurality of the inner plate (504) end surface is connected with two fan-shaped air bags (505), a plurality of the fan-shaped air bags (505) are provided with four pull springs (519) in the inside, the sleeve (501) inner wall is provided with two sliding blocks (513), two the sliding block (513) is provided with extrusion block (518) in the inside, the ring plate (520) inner wall is provided with two inclined blocks (522), two the inclined block (522) is connected with the embedded block (514). The flushing mechanism (6) includes flushing motor (601) and four bubble makers (610), the flushing motor (601) is provided with hollow shaft (602) in the inside, the hollow shaft (602) is provided with taper head pipe (603) in the inside, the hollow shaft (602) end surface is connected with stepped ball head (605), the stepped ball head (605) end surface is provided with a plurality of flushing heads (606). The blowdown mechanism (7) includes base (706) and venturi (704), the base (706) end surface is provided with flexible disc (705).

2. The high-efficiency well washing device for geothermal wells according to claim 1, characterized in that: The main rod (1) is provided with water pipe (3) in the inside, the water pipe (3) is provided with blowdown pipe (4) in the inside, the main rod (1) outer end is provided with two sliding grooves (2).

3. The high-efficiency well washing device for geothermal wells according to claim 2, characterized in that: The sleeve (501) outer end is provided with a plurality of placing grooves (502), a plurality of the turnover rods (503) are respectively arranged in a plurality of placing grooves (502), the turnover rod (503) inner wall is provided with air groove (516), a plurality of the turnover rod (503) end surface is provided with connecting piece (517), a plurality of the hydraulic telescopic rods (509) are respectively connected with a plurality of connecting pieces (517).

4. The high-efficiency well washing device for geothermal wells according to claim 3, characterized in that: A plurality of the inner plate (504) end surface is provided with a plurality of communication grooves (506), a plurality of the placing grooves (502) inner wall is provided with hole groove (507), a plurality of the hydraulic telescopic rods (509) are respectively arranged in a plurality of hole grooves (507).

5. The high-efficiency well washing device for geothermal wells according to claim 4, characterized in that: A plurality of the placing grooves (502) inner wall is provided with two connecting holes (508), a plurality of the connecting holes (508) are provided with vertical pipes (524) in the inside, a plurality of the hole grooves (507) are provided with air ring grooves (510) between them, the air pump (511) is connected with air ring groove (510) through pipeline, a plurality of the vertical pipes (524) are respectively connected with a plurality of air grooves (516).

6. The high-efficiency well washing device for geothermal wells according to claim 5, characterized in that: The sleeve (501) inner wall is provided with an adjusting ring groove (512), the ring plate (520) is arranged in the adjusting ring groove (512), the ring plate (520) end face is provided with a toothed plate (521), the adjusting motor (515) output end is connected with a tooth block (523), the tooth block (523) and the toothed plate (521) are engagedly connected, and the two embedding blocks (514) are connected with four extrusion blocks (518) respectively.

7. The high-efficiency well washing device for geothermal wells according to claim 6, characterized in that: The frame (604) is arranged on the end face of the flushing motor (601), and the stepped ball head (605) is arranged in the frame (604).

8. The high-efficiency well washing device for geothermal wells according to claim 7, characterized in that: The stepped ball head (605) is internally provided with an outer tube (609), the outer tube (609) is internally provided with an inner tube (607), and the four bubble generators (610) are arranged at the outer end of the outer tube (609).

9. The high-efficiency well washing device for geothermal wells according to claim 8, characterized in that: The base (706) end face is provided with a plurality of arc grooves (707), the Venturi tube (704) end face is provided with a connecting pipe (702), the connecting pipe (702) outer end is provided with a connecting seat (701), and the connecting seat (701) and the base (706) are provided with three supporting rods (703).

10. A high efficiency well washing process method of a geothermal well, using the high efficiency well washing equipment of any one of claims 1-9, characterized in that, The following steps are included: Step one: the device is lifted by a hanger and placed into a geothermal well; Step two: the hydraulic telescopic rod (509) is started to pull the turning rod (503) to open and adhere to the geothermal well wall, and then the air pump (511) is started to inflate the fan-shaped air bag (505) through the inner plate (504), so that the fan-shaped air bag (505) is inflated and contacts each other to form a seal in the geothermal well; Step three: water is injected into the flushing mechanism (6) through the water pipe (3), the water passes through the bubble generator (610) and enters the stepped ball head (605), and the water with bubbles is impacted on the geothermal well wall by the flushing head (606), and the flushing motor (601) drives the stepped ball head (605) to rotate; Step four: the continuously descending main rod (1) drives the sewage discharge mechanism (7) and the flushing mechanism (6) to descend synchronously with the main rod (1), forming upward flushing; Step five: the continuously injected water will cause the sealed geothermal well to expand, and the expanded gas will suck the sewage into the sewage discharge mechanism (7), and finally discharge the sewage through the sewage discharge pipe (4); Step six: when the sewage discharge pipe (4) discharges clean water, the water injection is closed; Step seven: the air in the fan-shaped air bag (505) is extracted by the air pump (511), the fan-shaped air bag (505) is pulled into the turning rod (503) by the pulling spring (519), and the hydraulic telescopic rod (509) pushes the turning rod (503) to re-enter the placing groove (502); Step eight: the main rod (1) is lifted by a hanger and leaves the geothermal well, and the well washing process is completed.

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