High-performance heat exchanger for recovering heat energy of drilling fluid

Abstract

The invention discloses a high-performance heat exchanger for recovering heat energy of drilling fluid, which relates to the technical field of heat exchanger appliances and comprises a main body, a PLC (programmable logic controller) externally connected with the main body, a rear end cover mounted at the rear end of the main body through a flange plate, an outlet formed in the rear end cover and an inlet formed in the front end of the main body. Through cooperation of turbine fan blades, a filter screen and a sealing ring, silt in drilling fluid can be conveniently filtered, then the sealing ring is opened to clean the silt in the filter box, and the function of filtering the silt in the drilling fluid is achieved; through cooperation of an air cooling plate and a flow dividing water pipe, on one hand, the contact area between the flow dividing water pipe and air is conveniently increased, on the other hand, high-speed air flow can drive the flow dividing water pipe to vibrate, and the rapid cooling and anti-blocking functions are achieved; through cooperation of a backflow pipe and a thermometer, the cooling effect is improved, and then the drilling fluid cooling function is achieved; finally, the problems that an existing device is poor in cooling effect and silt in drilling fluid easily blocks a heat exchanger are solved.

Description

Technical Field

[0001] This invention belongs to the technical field of heat exchanger equipment, and particularly relates to a high-performance heat exchanger for drilling fluid heat recovery. Background Technology

[0002] In deep and ultra-deep well drilling operations, the bottom hole temperature can rise to 200°C with increasing well depth. o Temperatures above 30°C in drilling fluid not only cause the failure of precision downhole instruments such as rotary steerable systems, measurement-while-drilling (MSWD), and logging-while-drilling (LODD), but also lead to degradation and performance deterioration of drilling fluid treatment agents, severely impacting drilling efficiency and wellbore safety. Therefore, it is necessary to cool the high-temperature drilling fluid returning from the wellhead using heat exchangers and recover its carried heat energy. This has become a crucial aspect of deep well drilling technology. However, existing drilling fluid heat exchangers face dual technical bottlenecks in practical applications: frequent mud and sand blockage and insufficient cooling effect. Specific problems are as follows:

[0003] Most devices use fixed filters to intercept mud and sand, but fine particles in drilling fluid are easily adsorbed on the surface of the filter to form scale, requiring frequent shutdowns for disassembly and cleaning. At the same time, there is a lack of effective means to monitor the filter clogging status in real time. The clogging problem is often only discovered after the drilling fluid flow rate drops significantly and the heat exchange efficiency drops sharply. At this time, stubborn sand has formed in the flow channel, requiring the heat exchanger to be completely disassembled. The maintenance cycle can last for several hours or even days, which seriously affects the drilling progress and the heat exchange efficiency of the drilling fluid. Even after preliminary filtration, fine mud and sand will still enter the heat exchange channel with the drilling fluid. Existing heat exchange tubes are mostly straight tubes or simple coil structures, and mud and sand are easy to deposit on the tube wall.

[0004] Traditional air-cooled devices typically use a single straight tube design for heat exchange, resulting in limited contact area with air and a lack of airflow guidance structure. This leads to slow heat exchange rates. Furthermore, most heat exchangers rely on a single heat exchange process and lack real-time monitoring and secondary adjustment mechanisms for the outlet drilling fluid temperature. Consequently, when the drilling fluid discharge fluctuates or the initial temperature is too high, cooling may fail to meet standards. Therefore, improvements are needed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a high-performance heat exchanger for drilling fluid heat recovery, so as to solve the above-mentioned defects in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-performance heat exchanger for drilling fluid heat recovery, comprising a main body, a PLC controller connected externally to the main body, a rear end cover mounted on the rear end of the main body via a flange, an outlet opened on the rear end cover, and an inlet located at the front end of the main body. A filter box is provided at the front end of the main body, and a filter mechanism for filtering drilling fluid mud is installed inside the filter box. A partition plate is installed inside the main body that abuts against the inner wall of the main body, and the partition plate divides the main body into two chambers. An air-cooling mechanism for cooling the drilling fluid is installed in the front chamber, and a water-cooling mechanism for cooling the drilling fluid is installed in the rear chamber.

[0007] Preferably, the filtration mechanism includes a diversion chamber installed in and communicating with the interior of the filter box. A filter screen is installed inside the filter box. A plurality of vibrating rods are fixedly connected to the front end of the filter screen, and a support ring is fixedly connected to the rear end of the inlet. A rotating shaft is rotatably connected inside the support ring. A turbine fan blade is sleeved at the front end of the rotating shaft, and a striking rod is fixedly connected to the rear end of the rotating shaft.

[0008] Preferably, a rubber ball is fixed to one end of both the striking rod and the vibrating rod, and the two rubber balls can collide when the striking rod rotates.

[0009] Preferably, the filter box has a notch on its periphery, a sealing ring is inserted into the notch, and a sealing strip is installed at the junction of the sealing ring and the notch. A flow meter is installed between the filter box and the diversion chamber.

[0010] Preferably, the air-cooling mechanism includes multiple branch water pipes installed in the front chamber of the main body. One end of each branch water pipe is connected to a branch compartment, and the other end of each branch water pipe is connected to the interior of a partition. Multiple air-cooling plates are installed longitudinally and equidistantly on the outside of each branch water pipe. Multiple air slots are longitudinally formed inside each air-cooling plate, and guide plates connected to the air slots are installed at both the upper and lower ends of each air-cooling plate.

[0011] Preferably, a first diverter is installed at the top of the main body. The input end of the first diverter is connected to a first air pump through a pipe. The first diverter has two output ends. One of the output ends is connected to multiple guide plates through multiple air pipes, and the other output end is connected to the front chamber. A second air pump is installed at the bottom of the main body. The output end of the second air pump is divided into two suction pipes. One suction pipe is connected to multiple guide plates through multiple air pipes, and the other suction pipe is connected to the interior of the front chamber.

[0012] Preferably, the water cooling mechanism includes a second distributor installed at one end of the partition, and two guide pipes connected to the other end of the second distributor. The two guide pipes are bent and distributed, and the other ends of the two guide pipes are connected to a temperature detection box. The front end of the temperature detection box is connected to the outlet, and a first solenoid valve for controlling the outlet is installed at the front end of the temperature detection box. A reflux assembly is installed on the temperature detection box.

[0013] Preferably, a coolant inlet is installed at the upper end of the main body, and two cooling pipes flow out from the coolant inlet. The cooling pipes are bent to match the guide pipe and are sleeved on the outside of the guide pipe. A sealing sleeve is installed at the connection between the guide pipe and the cooling pipes. A coolant drain is installed at the lower end of the main body, and a guide box is connected to the other end of the coolant drain. The guide box is connected to one end of the two cooling pipes.

[0014] Preferably, the reflux assembly includes a reflux pipe and a thermometer installed on the upper end of the temperature detection box, a second solenoid valve is installed on the reflux pipe, and the other end of the reflux pipe is connected to one of the guide pipes, and a one-way valve is installed at the connection between the reflux pipe and the guide pipe.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] 1) This invention facilitates the filtration of mud and sand inside the drilling fluid through the cooperation of turbine blades, filter screen and sealing ring, and automatically cleans the filter screen. With the help of a flow meter to determine whether the filter screen is blocked by mud and sand, the sealing ring is opened to clean the mud and sand in the filter box, thus realizing the filtration function of drilling fluid mud and sand.

[0017] 2) The present invention, through the combination of air-cooled plate and water distribution pipe, on the one hand, facilitates the increase of the contact area between water distribution pipe and air, thereby accelerating the speed of heat exchange; on the other hand, the high-speed airflow will cause the water distribution pipe to vibrate, thereby preventing mud and sand from adsorbing on the inner wall of the water distribution pipe and causing blockage; thus achieving rapid cooling and anti-blockage functions.

[0018] 3) This invention facilitates the monitoring of drilling fluid temperature through the combination of a return pipe and a thermometer. If the temperature does not meet the cooling standard, the fluid is returned for secondary water cooling, which improves the cooling effect and thus realizes the cooling function of the drilling fluid. Ultimately, it solves the problems of poor cooling effect and easy blockage of heat exchangers by mud and sand in the drilling fluid in existing devices. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall appearance and structure of the device of the present invention.

[0021] Figure 2 This is a side view of the overall appearance and structure of the device of the present invention.

[0022] Figure 3 This is a top view of the overall cross-sectional structure of the device of the present invention.

[0023] Figure 4 This is a schematic diagram of the overall internal structure of the device of the present invention.

[0024] Figure 5 This is a top view of the cross-sectional structure of the filter mechanism of the present invention.

[0025] Figure 6 This is a schematic diagram of the internal structure of the filtration mechanism of the present invention.

[0026] Figure 7 This is a schematic diagram of the air-cooling mechanism of the present invention.

[0027] Figure 8 This is a bottom view of the air-cooling mechanism structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the water cooling mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram of the recirculation component structure of the present invention.

[0030] Figure 11 This is a cross-sectional structural diagram of the water cooling mechanism of the present invention.

[0031] Figure 12 This is a schematic diagram of the cooling pipe structure of the present invention.

[0032] Figure 13 For the present invention Figure 10 Enlarged schematic diagram of the structure at part A in the middle.

[0033] The markings in the diagram are as follows: 1. Main body; 2. Rear end cover; 3. Outlet; 4. Filter box; 5. Baffle plate; 6. Inlet; 7. Filter screen; 8. Shaft; 9. Impact rod; 10. Turbine fan blade; 11. Vibration rod; 12. Sealing ring; 13. Flow divider; 14. Flow meter; 15. Flow divider pipe; 16. Air-cooled plate; 17. Guide plate; 18. First flow divider; 19. First air pump; 20. Second air pump; 21. Flow guide pipe; 22. Temperature detection box; 23. First solenoid valve; 24. Return pipe; 25. Second solenoid valve; 26. Thermometer; 27. Check valve; 28. Coolant inlet; 29. ​​Cooling pipe; 30. Flow divider box; 31. Coolant drain outlet; 32. Second flow divider. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Example 1:

[0036] See Figures 1 to 13This invention proposes a high-performance heat exchanger for drilling fluid heat recovery, comprising a main body 1, a PLC controller connected to the main body 1, a rear end cover 2 mounted at the rear end of the main body 1 via a flange, an outlet 3 opened on the rear end cover 2, and an inlet 6 located at the front end of the main body 1. The PLC controller facilitates connection with all intelligent control machinery and enables control through signal analysis. The outlet 3 and inlet 6 facilitate the entry and exit of drilling fluid into the main body 1. A filter box 4 is provided at the front end of the main body 1 to facilitate the filtration of mud in the drilling fluid, blocking larger mud particles inside the filter box 4 to prevent mud from clogging the water distribution pipe 15 located inside the main body 1. A filtration mechanism for filtering drilling fluid mud is installed inside the filter box 4. The main body 1 has a partition 5 installed inside, which abuts against the inner wall of the main body 1. The partition 5 facilitates the formation of two independent spaces within the main body 1, thereby achieving a dual heat exchange effect of air cooling and water cooling for the drilling fluid. The partition 5 divides the main body 1 into two chambers. The front chamber is equipped with an air cooling mechanism for cooling the drilling fluid, and the rear chamber is equipped with a water cooling mechanism for cooling the drilling fluid. The filtration mechanism includes a diversion chamber 13 installed in the filter box 4 and communicating with the inside of the filter box 4. The diversion chamber 13 facilitates the diversion of the filtered drilling fluid, increasing the contact area with air and thus improving the cooling effect. The filter box 4 is equipped with a filter screen 7 (a spring filter screen with a shaking effect), which facilitates the removal of large particles of mud and sand in the drilling fluid. Filtration; multiple vibrating rods 11 are fixed to the front end of the filter screen 7. These vibrating rods 11 facilitate the vibration of the filter screen 7 to dislodge sediment adsorbed on it, achieving a self-cleaning function. A support ring is fixed to the rear end of the inlet 6, and a rotating shaft 8 is rotatably connected within the support ring. A turbine blade 10 is sleeved at the front end of the rotating shaft 8, and a striking rod 9 is fixed to the rear end. When liquid passes through, it drives the turbine blade 10 to rotate, which in turn drives the rotating shaft 8 to rotate, thus rotating the striking rod 9. Rubber balls are fixed to one end of both the striking rod 9 and the vibrating rod 11. These rubber balls allow the striking rod 9 to rotate, causing the two rubber balls to collide and vibrate the vibrating rod 11. Furthermore, the collision of the two rubber balls during the rotation of the striking rod 9 further enhances the filtration system. The filter box 4 has openings on all four sides, with sealing rings 12 inserted into the openings. The sealing rings 12 ensure the airtightness of the filter box 4 during heat recovery. When it is necessary to clean the accumulated mud and sand inside the filter box 4, the openings on the filter box 4 can be opened to clean out the accumulated mud and sand, preventing the filter screen 7 from clogging and preventing drilling fluid from entering the main body 1. Sealing strips are installed at the joints between the sealing rings 12 and the openings. A flow meter 14 is installed between the filter box 4 and the diversion chamber 13. The flow meter 14 facilitates real-time monitoring of the drilling fluid from the filter box 4 to the diversion chamber 13. When the flow rate is low, it indicates that there is a lot of sand accumulated inside the filter box 4. At this time, the inlet 6 is closed in conjunction with the PLC controller, and the sealing rings 12 are manually opened to clean the inside of the filter box 4.

[0037] Example 2:

[0038] The technical solution is basically the same as that in Embodiment 1, except that, as Figure 3 , Figure 7 , Figure 8 As shown, the air-cooling mechanism includes multiple branch water pipes 15 installed in the front chamber of the main body 1. One end of each branch water pipe 15 is connected to the branch chamber 13, and the other end is connected to the interior of the partition 5. Multiple air-cooling plates 16 are longitudinally and equidistantly installed on the outer side of each branch water pipe 15. Multiple air ducts are equidistantly opened inside the air-cooling plates 16. On the one hand, the air ducts increase the internal airflow speed, which, combined with the larger contact area of ​​the branch water pipes 15, facilitates cooling of the branch water pipes 15 and improves cooling efficiency. On the other hand, the faster airflow speed causes the branch water pipes 15 to vibrate, which prevents fine sediment from adhering to the inner wall of the guide pipe 21 inside the water-cooling mechanism. Multiple air ducts are longitudinally opened inside the air-cooling plates 16, and guide plates 17 connected to the air ducts are installed at both the top and bottom ends of the air-cooling plates 16. A first branch water duct is installed at the top of the main body 1. The first air pump 19 is connected to the input end of the first air pump 18 via a pipe. The first air pump 18 has two output ends. One output end is connected to multiple guide plates 17 via multiple air pipes, and the other output end is connected to the front chamber. The guide plates 17 and the first air pump 18 facilitate the division of the gas drawn in by the first air pump 19 into two output directions. One output is used to cool the front chamber, and the other output is used to quickly cool the water pipe 15. A second air pump 20 is installed at the bottom of the main body 1. The output end of the second air pump 20 is divided into two suction pipes. One suction pipe is connected to multiple guide plates 17 via multiple air pipes, and the other suction pipe is connected to the interior of the front chamber. The second air pump 20 extracts air from the front chamber and the interior of the guide plates 17 respectively, thereby improving the ventilation speed and cooling speed.

[0039] Example 3:

[0040] The technical solution is basically the same as that in Embodiment 1, except that, as Figure 9 , Figure 10 , Figure 11As shown, the water-cooling mechanism includes a second distributor 32 installed at the other end of the partition 5. Two guide pipes 21 are connected to the other end of the second distributor 32. The second distributor 32 facilitates the division of the air-cooled drilling fluid into two branches that flow into the guide pipes 21. The two guide pipes 21 are bent and distributed. A coolant inlet 28 is installed at the upper end of the main body 1. Two cooling pipes 29 branch out from the coolant inlet 28. The cooling pipes 29 are designed to fit the bends of the guide pipes 21 and are sleeved on the outside of the guide pipes 21. The cooling pipes 29 sleeved on the outside of the guide pipes 21 facilitate the flow of drilling fluid. It performs heat exchange; a sealing sleeve is installed at the connection between the guide pipe 21 and the cooling pipe 29, and a coolant drain port 31 is installed at the lower end of the main body 1. The other end of the coolant drain port 31 is connected to a guide box 30, which is connected to one end of the two cooling pipes 29. The coolant circulation is facilitated through the coolant inlet 28 and the coolant drain port 31; the other end of the two guide pipes 21 is connected to a temperature detection box 22, and a return assembly is installed on the temperature detection box 22. The return assembly includes a return pipe 24 installed at the upper end of the temperature detection box 22 and a thermometer 26. 6. Facilitates real-time monitoring of the internal temperature of the temperature detection chamber 22; a second solenoid valve 25 is installed on the return pipe 24, and the other end of the return pipe 24 is connected to one of the guide pipes 21. A one-way valve 27 is installed at the connection between the return pipe 24 and the guide pipe 21. The one-way valve 27 prevents the coolant inside the guide pipe 21 from directly entering the return pipe 24; the temperature detection chamber 22 facilitates temperature measurement of the water-cooled drilling fluid. If the temperature is higher than the specified temperature, the return assembly is activated to perform secondary water cooling of the drilling fluid; the front end of the temperature detection chamber 22 is connected to the outlet 3, and the temperature detection chamber 2... 2. A first solenoid valve 23 is installed at the front end to control the outlet 3. Through the cooperation of the first solenoid valve 23, the second solenoid valve 25, the outlet 3 and the return pipe 24, when the thermometer 26 detects that the drilling fluid temperature is too high, the first solenoid valve 23 closes and the second solenoid valve 25 opens. Under the pressure impact (at this time, the PLC controller reduces the water flow of the inlet 6, so that there is a certain pressure inside the guide pipe 21 and the drilling fluid in the guide pipe 21 will not be unable to flow due to the closure of the first solenoid valve 23), the drilling fluid enters one of the guide pipes 21 through the return pipe 24 for secondary water cooling.

[0041] Working principle: In this embodiment, the present invention also proposes a method for using a high-performance heat exchanger for drilling fluid heat recovery, including the following steps:

[0042] Step 1: Connect the heat exchanger to the PLC controller and check the sealing of the heat exchanger connection. Then turn on the power. The drilling fluid enters the filter box 4 from the inlet 6. Under the impact of the drilling fluid flow, the turbine fan blade 10 is driven to rotate, which in turn drives the rotating shaft 8 and the rear impact rod 9 to rotate. During the rotation of the impact rod 9, the rubber ball at its end collides with the rubber ball at the end of the vibrating rod 11, causing the vibrating rod 11 to drive the filter screen 7 to vibrate, thereby filtering out large particles of mud in the drilling fluid and preventing mud and sand from clogging the filter screen 7 through the vibration of the filter screen 7. The filtered drilling fluid flows into the diversion pipe 15 through the diversion chamber 13. At the same time, the flow meter 14 monitors the flow rate in real time. If the flow rate is too low, it means that too much mud and sand has accumulated inside the filter box 4 and clogged the filter screen 7. The PLC controller will issue a prompt to clean the mud and sand accumulated in the filter box 4. At this time, the sealing ring 12 can be opened manually and some mud and sand inside the filter box 4 can be removed with tools. Then the sealing ring 12 is closed, and the drilling fluid continues to enter the filter box 4 from the inlet 6.

[0043] Step two: The drilling fluid entering the diversion pipe 15 is cooled by air in the front chamber. The first air pump 19 draws outside air into the first distributor 18. Part of the diverted air enters the guide plate 17 through the air pipe, and then flows through the air duct and the air-cooling plate 16 to exchange heat with the drilling fluid in the diversion pipe 15. Because the air velocity inside the air duct is relatively fast, the heat exchange speed is also relatively fast. The high air velocity will cause the diversion pipe 15 to vibrate. Vibration can prevent fine mud and sand from adhering to the inner wall of the guide pipe 21. At the same time, the diversion pipe 15 and the air-cooling plate 16 can increase the contact area between the diversion pipe 15 and the air, thereby expanding the heat exchange area. The other part of the diverted air directly enters the front chamber, enhancing the air flow in the chamber. Meanwhile, the second air pump 20 extracts the hot air from the guide plate 17, the air duct and the front chamber through the air extraction pipe, forming a continuous air circulation, which efficiently removes the heat of the drilling fluid.

[0044] Step 3: After being cooled by air, the drilling fluid enters the second distributor 32 in the rear chamber through the internal channel of the partition 5. After being split, it enters two bent guide pipes 21. The coolant flows from the coolant inlet 28 into two cooling pipes 29. The cooling pipes 29 are sleeved on the outside of the guide pipes 21. The drilling fluid in the guide pipes 21 is cooled by water through heat exchange. The coolant that has absorbed heat is collected in the guide box 30 and discharged from the coolant drain outlet 31.

[0045] Step four: After water cooling, the drilling fluid enters the temperature detection chamber 22, and the thermometer 26 detects its temperature. If the temperature meets the requirements, the first solenoid valve 23 opens, and the drilling fluid is discharged from the outlet 3. If the temperature is higher than the specified value, the first solenoid valve 23 closes, and the second solenoid valve 25 opens. At this time, the PLC controller reduces the water flow at the inlet 6, so that there is a certain pressure inside the guide pipe 21, but the drilling fluid in the guide pipe 21 will not be unable to flow due to the closure of the first solenoid valve 23. Under the action of pressure, the drilling fluid flows back to one of the guide pipes 21 through the return pipe 24 and the one-way valve 27 for secondary water cooling until the temperature reaches the standard, and then it is discharged from the outlet 3. Finally, the power is turned off and the inside of the device is cleaned by injecting clean water (during the entire operation of the heat exchanger, the intelligent part is monitored and analyzed by the PLC controller).

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-performance heat exchanger for drilling fluid heat recovery, comprising a main body (1), a PLC controller externally connected to the main body (1), a rear end cover (2) mounted on the rear end of the main body (1) via a flange, an outlet (3) opened on the rear end cover (2), and an inlet (6) located at the front end of the main body (1), characterized in that: The main body (1) is provided with a filter box (4) at the front end. The filter box (4) is equipped with a filter mechanism for filtering drilling fluid mud. The inlet (6) is installed at the front end of the filter box (4). The main body (1) is equipped with a partition (5) that abuts against the inner wall of the main body (1). The partition (5) divides the main body (1) into two chambers. The front chamber is equipped with an air-cooling mechanism for cooling the drilling fluid, and the rear chamber is equipped with a water-cooling mechanism for cooling the drilling fluid.

2. A high-performance heat exchanger for drilling fluid heat recovery according to claim 1, characterized in that: The filtration mechanism includes a diversion chamber (13) installed in the filter box (4) and communicating with the interior of the filter box (4). A filter screen (7) is installed inside the filter box (4). A plurality of vibrating rods (11) are fixed to the front end of the filter screen (7). A support ring is fixed to the rear end of the inlet (6). A rotating shaft (8) is rotatably connected inside the support ring. A turbine fan blade (10) is sleeved at the front end of the rotating shaft (8). A striking rod (9) is fixed to the rear end of the rotating shaft (8).

3. A high-performance heat exchanger for drilling fluid heat recovery according to claim 2, characterized in that: Both the striking rod (9) and the vibrating rod (11) have rubber balls fixed to one end, and the two rubber balls can collide when the striking rod (9) rotates.

4. A high-performance heat exchanger for drilling fluid heat recovery according to claim 2, characterized in that: The filter box (4) has a notch on its periphery, and a sealing ring (12) is inserted into the notch. A sealing strip is installed at the junction of the sealing ring (12) and the notch. A flow meter (14) is installed between the filter box (4) and the diversion chamber (13).

5. A high-performance heat exchanger for drilling fluid heat recovery according to claim 1, characterized in that: The air-cooling mechanism includes multiple branch water pipes (15) installed in the front chamber of the main body (1). One end of the branch water pipe (15) is connected to the branch chamber (13), and the other end of the branch water pipe (15) is connected to the interior of the partition (5). Multiple air-cooling plates (16) are installed longitudinally and equidistantly on the outside of the branch water pipe (15). Multiple air slots are longitudinally opened inside the air-cooling plate (16), and guide plates (17) connected to the air slots are installed at both the upper and lower ends of the air-cooling plate (16).

6. A high-performance heat exchanger for drilling fluid heat recovery according to claim 5, characterized in that: The main body (1) is equipped with a first diverter (18) at the top. The input end of the first diverter (18) is connected to a first air pump (19) through a pipe. The first diverter (18) has two output ends. One of the output ends is connected to multiple guide plates (17) through multiple air pipes, and the other output end is connected to the front chamber. The main body (1) is equipped with a second air pump (20) at the bottom. The output end of the second air pump (20) is divided into two suction pipes. One of the suction pipes is connected to multiple guide plates (17) through multiple air pipes, and the other suction pipe is connected to the interior of the front chamber.

7. A high-performance heat exchanger for drilling fluid heat recovery according to claim 1, characterized in that: The water cooling mechanism includes a second distributor (32) installed at one end of the partition (5), and two guide pipes (21) connected to the other end of the second distributor (32). The two guide pipes (21) are bent and distributed, and the other end of the two guide pipes (21) is connected to a temperature detection box (22). The front end of the temperature detection box (22) is connected to the outlet (3), and a first solenoid valve (23) for controlling the outlet (3) is installed at the front end of the temperature detection box (22). A reflux assembly is installed on the temperature detection box (22).

8. A high-performance heat exchanger for drilling fluid heat recovery according to claim 7, characterized in that: The upper end of the main body (1) is equipped with a coolant inlet (28), and two cooling pipes (29) flow out from the coolant inlet (28). The cooling pipes (29) are bent to match the guide pipe (21) and are sleeved on the outside of the guide pipe (21). A sealing sleeve is installed at the connection between the guide pipe (21) and the cooling pipes (29). The lower end of the main body (1) is equipped with a coolant drain outlet (31). The other end of the coolant drain outlet (31) is connected to a guide box (30). The guide box (30) is connected to one end of the two cooling pipes (29).

9. A high-performance heat exchanger for drilling fluid heat recovery according to claim 7, characterized in that: The reflux assembly includes a reflux pipe (24) and a thermometer (26) installed on the upper end of the temperature detection box (22). A second solenoid valve (25) is installed on the reflux pipe (24), and the other end of the reflux pipe (24) is connected to one of the guide pipes (21). A one-way valve (27) is installed at the connection between the reflux pipe (24) and the guide pipe (21).

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