A blowout preventer housing forging post-cooling shaping device

Abstract

The utility model relates to the field of blowout preventer shell forging technology, especially to a blowout preventer shell forging after cooling setting device, including cooling pool, baffle, control box, drain pipe, valve, filter screen and placing plate etc.

Description

Technical Field

[0001] This utility model relates to the field of blowout preventer housing forging technology, and in particular to a cooling and shaping device for blowout preventer housing after forging. Background Technology

[0002] The blowout preventer (BOP) housing is a core pressure-bearing component in oil and gas drilling well control systems. It primarily houses the gate valve, annular rubber core, and other sealing actuators, and withstands the impact of high-pressure downhole fluids. Typically made of high-strength alloy steel through integral forging or casting, it possesses excellent pressure resistance, impact resistance, and corrosion resistance, with design pressure ratings ranging from 35 MPa to 105 MPa or even higher. The housing structure includes the main bore, side wing outlets, hydraulic control channels, and sealing surfaces. It must undergo rigorous non-destructive testing and pressure testing to ensure rapid and reliable wellhead closure during emergency shut-in, preventing blowout accidents.

[0003] In the heat treatment of complex geometric forgings such as large alloy steel blowout preventer shells, the post-forging cooling process is a crucial step determining the final dimensional accuracy, internal microstructure uniformity, and mechanical property stability. Currently, the industry commonly uses traditional cooling methods such as natural air cooling (slowly cooling the forging directly in the air after forging) or in-situ stack cooling (piling the forgings together and relying on the environment for heat dissipation). Although these methods have the advantages of simple operation and low equipment investment, their cooling rate and direction are completely uncontrollable, making it impossible to overcome the severe uneven cooling problem caused by complex geometries. This induces huge thermal and structural stresses within the workpiece, easily leading to irreversible plastic deformations such as bending, warping, and out-of-tolerance ellipticity. Subsequent mechanical straightening can partially restore the shape, but it significantly increases costs and may damage the material microstructure, introduce new residual stresses, and pose a secondary threat to product quality.

[0004] Therefore, it is necessary to design a cooling and shaping device for the blowout preventer housing after forging in order to solve the above-mentioned technical problems. Utility Model Content

[0005] To overcome the drawbacks of traditional natural air cooling or stack cooling processes, which result in uncontrollable cooling, uneven cooling of large alloy steel blowout preventer shell forgings, generating huge internal stresses, and easily causing plastic deformations such as bending and warping, subsequent straightening not only increases costs but may also damage the microstructure, introduce residual stress, and threaten product quality, this utility model provides a cooling and shaping device for blowout preventer shells after forging.

[0006] The technical solution is as follows: A cooling and shaping device for blowout preventer shells after forging includes a cooling pool, a partition, a control box, a drain pipe, a valve, a filter, a placement plate, a motor, and blades. The partition is fixedly connected inside the cooling pool, the control box is fixedly connected to the left side of the cooling pool, the drain pipe is fixedly connected and connected to the lower part of the cooling pool, the valve is fixedly connected and connected to the front of the drain pipe, the filter is embedded and fixedly connected inside the partition, more than one placement plate is fixedly connected in a linear array inside the cooling pool, the motor is fixedly connected to the left side of the cooling pool, the motor is electrically connected to the control box, and the output shaft of the motor passes through the interior of the cooling pool and is fixedly connected to blades, which are located on the left side of the partition.

[0007] Optionally, multiple placement plates are located on the right side of the partition, and V-shaped grooves are formed on the upper part of each placement plate.

[0008] Optionally, it also includes a cooling tank, an inlet pipe, a sealing cap, a top cover, a handle, an atomizing nozzle, an infusion pipe, and a liquid pump. The cooling tank is fixedly connected to the top of the cooling pool, and the inlet pipe is fixedly connected to and connected to the top of the cooling tank. The sealing cap is threadedly connected to the top of the inlet pipe. The top cover is rotatably connected to the top of the cooling pool, and the top cover covers the top of the cooling pool. A partition is opened inside the top cover. The handle is fixedly connected to the top of the top cover. Multiple atomizing nozzles are fixedly connected to and connected to the inside of the top cover. The infusion pipe is fixedly connected to and connected to the top of the top cover. The liquid pump is fixedly connected to and connected to the rear of the cooling tank. The liquid pump is electrically connected to the control box, and the rear of the liquid pump is fixedly connected to and connected to the front of the infusion pipe.

[0009] Optionally, the top cover has a semi-circular structure.

[0010] Optionally, it also includes a temperature controller, a temperature sensor, a temperature guide plate, and a condenser. The temperature controller is fixedly connected to the front of the cooling box, and the temperature sensor is fixedly connected through the middle of the top of the cooling box. The temperature sensor is electrically connected to the temperature controller. The temperature guide plate is fixedly connected inside the cooling box, and the condenser is fixedly connected to the left side of the temperature guide plate. The condenser is electrically connected to the temperature controller.

[0011] Optionally, it also includes a return pipe and a one-way valve. The return pipes are symmetrically and fixedly connected inside the cooling pool. Multiple liquid inlet slots are arranged in a ring array at the bottom of the two return pipes. One-way valves are fixedly connected inside the two return pipes. The upper part of the two return pipes extends through a partition and is fixedly connected and communicates with the cooling box.

[0012] Optionally, both return pipes are located on the left side of the partition.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model starts the motor through the control box, drives the output shaft to drive the blades to rotate at high speed and generate a strong vortex water flow to promote the full convection of the coolant, so that the surface of the high-temperature shell can achieve uniform heat exchange without dead angles, effectively eliminating the regional temperature difference caused by traditional natural cooling, thereby significantly reducing thermal stress and structural stress, fundamentally preventing plastic deformation such as shell bending and warping, avoiding subsequent straightening processes and the possible structural damage and residual stress problems, and ensuring the final quality of the product.

[0014] 2. This utility model uses a liquid pump to extract coolant, driving an atomizing nozzle to form uniform and fine atomized droplets that diffuse throughout the enclosed cooling space. Simultaneously, a closed-loop circuit consisting of the liquid pump, return pipe, and one-way valve draws the heat-exchanged coolant back to the cooling tank, where it is cooled by the condenser and temperature-conducting plate. This achieves the recycling of coolant and stable temperature control, significantly saving cooling medium consumption and continuously maintaining the coolant at a suitable low-temperature operating state, thus ensuring the high efficiency and stability of the entire cooling process.

[0015] 3. This utility model uses an arc-shaped top cover with a cavity to form an arc-shaped cooling water wall inside during the initial spraying stage, which effectively isolates the rising hot airflow below, reduces the surface temperature of the box, and plays a good role in heat insulation and protection, preventing operators from being accidentally burned. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the cooling pool, partition, and control box.

[0018] Figure 3 This is a three-dimensional structural diagram of the components of this utility model, such as the drain pipe, valve, and filter screen.

[0019] Figure 4 This is a three-dimensional structural diagram of the temperature controller, liquid inlet pipe, and sealing cap of this utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the components of this utility model, including the return pipe, one-way valve, and temperature guide plate.

[0021] Figure 6 This is a three-dimensional structural diagram of the components of this utility model, including the cooling tank, the infusion pipe, and the liquid pump.

[0022] Explanation of reference numerals in the attached drawings: 1_Cooling pool, 2_Baffle plate, 3_Control box, 4_Drain pipe, 5_Valve, 6_Filter screen, 7_Placement plate, 8_Motor, 9_Blade, 10_Cooling tank, 11_Thermostat, 12_Inlet pipe, 13_Sealing cover, 14_Temperature sensor, 15_Top cover, 16_Handle, 17_Atomizing nozzle, 18_Return pipe, 19_One-way valve, 20_Temperature guide plate, 21_Condenser pipe, 22_Inlet pipe, 23_Liquid pump. Detailed Implementation

[0023] Example: A cooling and shaping device for a blowout preventer housing after forging, such as... Figures 1-6 As shown, the system includes a cooling pool 1, a partition 2, a control box 3, a drain pipe 4, a valve 5, a filter 6, a placement plate 7, a motor 8, and blades 9. The partition 2 is welded to the left side inside the cooling pool 1. The control box 3 is installed on the left front part of the cooling pool 1 with screws. The drain pipe 4 is fixedly connected to and connected to the lower front part of the cooling pool 1. The valve 5 is fixedly connected to and connected to the front end of the drain pipe 4. The filter 6 is embedded in the partition 2 with screws. Four placement plates 7 are welded in a linear array on the right side inside the cooling pool 1. All four placement plates 7 are located to the right of the partition 2. V-grooves are opened on the upper part of each of the four placement plates 7. The motor 8 is installed on the left side of the cooling pool 1 with screws. The motor 8 is electrically connected to the control box 3. The output shaft of the motor 8 extends to the right and enters the interior of the cooling pool 1, where it is connected to blades 9 via a coupling. Blades 9 are located to the left of the partition 2.

[0024] like Figures 4-6 As shown, it also includes a cooling tank 10, an inlet pipe 12, a sealing cap 13, a top cover 15, a handle 16, an atomizing nozzle 17, an inlet pipe 22, and a liquid pump 23. The cooling tank 10 is screwed onto the top left side of the cooling pool 1. The inlet pipe 12 is fixedly connected to and connected to the top rear side of the cooling tank 10. The sealing cap 13 is threaded onto the top side of the inlet pipe 12. The top cover 15 is rotatably connected to the top rear side of the cooling pool 1. The top cover 15 covers the top of the cooling pool 1, allowing cooling... Pool 1 is in a sealed state. The upper cover 15 has a cavity inside. The upper cover 15 has a semi-circular structure. A handle 16 is welded to the front of the top of the upper cover 15. Multiple atomizing nozzles 17 are fixedly connected and connected to the bottom of the upper cover 15. An infusion pipe 22 is fixedly connected and connected to the middle of the top side of the upper cover 15. A liquid pump 23 is fixedly connected and connected to the lower rear side of the cooling box 10. The liquid pump 23 is electrically connected to the control box 3. The rear end of the liquid pump 23 is fixedly connected and connected to the front end of the infusion pipe 22.

[0025] like Figure 1 , Figure 4 and Figure 5As shown, it also includes a temperature controller 11, a temperature sensor 14, a temperature guide plate 20, and a condenser tube 21. The temperature controller 11 is installed on the front left side of the cooling box 10 by screws. The temperature sensor 14 is installed through the middle of the top of the cooling box 10 by screws. The temperature sensor 14 is electrically connected to the temperature controller 11. The temperature guide plate 20 is installed on the left side of the interior of the cooling box 10 by screws. The condenser tube 21 is installed on the left side of the temperature guide plate 20 by screws. The condenser tube 21 is electrically connected to the temperature controller 11.

[0026] like Figure 5 As shown, it also includes a return pipe 18 and a one-way valve 19. The return pipe 18 is symmetrically fixedly connected to the left side of the cooling tank 1. Both return pipes 18 are located on the left side of the partition 2. The lower part of both return pipes 18 has multiple liquid inlet slots arranged in a ring. The upper side of both return pipes 18 is fitted with a one-way valve 19 by screws. The upper ends of both return pipes 18 pass through the partition 2 and are fixedly connected to and communicate with the cooling box 10.

[0027] When this device is needed to cool and shape the forged 25CrNiMo blowout preventer shell, the operator first pulls handle 16 to rotate and open the top cover 15. Then, coolant is poured into the cooling pool 1. When the coolant reaches half full, the pouring is stopped. The high-temperature shell workpiece is then placed stably on the four placement plates 7 in the right-side cooling pool 1 using hoisting equipment. The V-groove effectively positions and fixes the cylindrical or flange-shaped shell parts, preventing them from rolling or shifting during the cooling process. After placement, handle 16 is pulled to reverse and close the top cover 15, tightly covering the top of the cooling pool 1, thus forming a relatively sealed cooling space. When the cooling process starts, the operator turns on the liquid pump 23 and motor 8 through the control box 3. After the liquid pump 23 starts working, it pumps the coolant stored in the cooling tank 10 into the cavity of the top cover 15 through the liquid delivery pipe 22. The coolant is then cooled inside the cavity. The liquid forms an arc-shaped cooling water wall. Since the internal hot air flows upward, the cooling water wall acts as an insulation to prevent people from being burned by accidentally touching the top cover 15. After the coolant inside the cavity is filled, it is sprayed downward through multiple evenly distributed atomizing nozzles 17, forming uniform and fine atomized droplets that diffuse throughout the entire sealed cooling space. This allows for comprehensive and uniform contact and heat exchange with the high-temperature shell surface. At the same time, the motor 8 starts, and its output shaft drives the blades 9 to rotate at high speed in the left chamber of the cooling pool 1. The rotation of the blades 9 violently agitates the coolant in this area, forming a powerful vortex water flow. This vortex water flow can penetrate the filter screen 6, causing the liquid in the entire cooling pool 1 to generate strong and uniform convection. This ensures that the liquid can achieve full contact and efficient heat exchange with all parts of the shell workpiece placed on the placement plate 7, greatly improving the uniformity of cooling and effectively preventing deformation or structural defects caused by excessively fast or slow local cooling.

[0028] Rotate to open the sealing cap 13 to fill the cooling tank 10 with coolant. Once the coolant is full, reverse the sealing cap 13 to close the cooling tank 10. The temperature sensor 14 monitors the temperature of the coolant in the cooling tank 10 in real time and transmits the signal to the temperature controller 11. When the coolant temperature rises to the set threshold due to continuous heat absorption, the temperature controller 11 will automatically start the condenser 21. The cooling energy generated by the condenser 21 is efficiently transferred to the surrounding coolant through the heat conduction plate 20, thereby cooling the liquid in the cooling tank 10 and keeping it within a suitable cooling temperature range, ensuring the stability and efficiency of the cooling process.

[0029] As cooling progresses, the sprayed and evaporated coolant collects at the bottom of cooling pool 1. When the liquid level in cooling pool 1 rises to the inlet tank at the bottom of the return pipe 18 on the left, the pump 23 continuously draws coolant from cooling tank 10 and pumps it to atomizing nozzle 17, creating a negative pressure in cooling tank 10. This negative pressure is transmitted through the return pipe 18, drawing the hotter coolant from cooling pool 1 after heat exchange into the return pipe 18 via the inlet tank. The liquid then flows through check valve 19 and is returned to cooling tank 10. Check valve 19 ensures that the liquid can only flow back to cooling tank 10 in one direction, preventing backflow. The hot liquid returning to cooling tank 10 will be cooled again by condenser 21, thus completing a full cycle and realizing the recycling of coolant. This saves resources and maintains the continuous and stable performance of the cooling system.

[0030] Once the cooling and shaping process has reached the required time, the liquid pump 23 and motor 8 are shut off via control box 3 to stop spraying and stirring. Then, valve 5 can be opened, and excess waste liquid can be discharged through drain pipe 4. After the device stops running, the operator can turn handle 16 to rotate and open the top cover 15 again. The blowout preventer housing workpiece that has completed cooling and shaping can then be removed using hoisting equipment, thus completing the entire work process. Finally, the top cover 15 and valve 5 are reversed and closed to prepare for the next processing operation.

Claims

1. A cooling and shaping device for a blowout preventer housing after forging, characterized in that: It includes a cooling pool (1), a partition (2), a control box (3), a drain pipe (4), a valve (5), a filter (6), a placement plate (7), a motor (8), and blades (9). The partition (2) is fixedly connected inside the cooling pool (1). The control box (3) is fixedly connected to the left side of the cooling pool (1). The drain pipe (4) is fixedly connected and connected to the lower part of the cooling pool (1). The valve (5) is fixedly connected and connected to the front part of the drain pipe (4). The filter (6) is embedded and fixedly connected inside the partition (2). More than one placement plate (7) is fixedly connected in a linear array inside the cooling pool (1). The motor (8) is fixedly connected to the left side of the cooling pool (1). The motor (8) is electrically connected to the control box (3). The output shaft of the motor (8) passes through the cooling pool (1) and is fixedly connected to blades (9). The blades (9) are located to the left of the partition (2).

2. The cooling and shaping device for a blowout preventer housing after forging according to claim 1, characterized in that: Multiple placement plates (7) are located to the right of the partition (2), and V-shaped grooves are provided on the upper part of the multiple placement plates (7).

3. The cooling and shaping device for a blowout preventer housing after forging according to claim 2, characterized in that: It also includes a cooling tank (10), an inlet pipe (12), a sealing cap (13), a top cover (15), a handle (16), an atomizing nozzle (17), an inlet pipe (22), and a liquid pump (23). The cooling tank (10) is fixedly connected to the top of the cooling pool (1). The inlet pipe (12) is fixedly connected to and connected to the top of the cooling tank (10). The sealing cap (13) is threadedly connected to the top of the inlet pipe (12). The top cover (15) is rotatably connected to the top of the cooling pool (1). Cover the top of the cooling tank (1), and the top cover (15) has a cavity inside. A handle (16) is fixedly connected to the top of the top cover (15). Multiple atomizing nozzles (17) are fixedly connected and connected inside the top cover (15). An infusion pipe (22) is fixedly connected and connected to the top of the top cover (15). A liquid pump (23) is fixedly connected and connected to the rear of the cooling tank (10). The liquid pump (23) is electrically connected to the control box (3). The rear of the liquid pump (23) is fixedly connected and connected to the front of the infusion pipe (22).

4. The cooling and shaping device for a blowout preventer housing after forging according to claim 3, characterized in that: The top cover (15) has a semi-circular structure.

5. The cooling and shaping device for a blowout preventer housing after forging according to claim 4, characterized in that: It also includes a temperature controller (11), a temperature sensor (14), a temperature guide plate (20), and a condenser (21). The temperature controller (11) is fixedly connected to the front of the cooling box (10). The temperature sensor (14) is fixedly connected through the middle of the top of the cooling box (10). The temperature sensor (14) is electrically connected to the temperature controller (11). The temperature guide plate (20) is fixedly connected inside the cooling box (10). The condenser (21) is fixedly connected to the left side of the temperature guide plate (20). The condenser (21) is electrically connected to the temperature controller (11).

6. A cooling and shaping device for a blowout preventer housing after forging, as described in claim 5, characterized in that: It also includes a return pipe (18) and a one-way valve (19). The return pipe (18) is symmetrically fixedly connected inside the cooling pool (1). The lower part of the two return pipes (18) is provided with multiple liquid inlet slots in a ring array. The two return pipes (18) are fixedly connected with one-way valves (19). The upper part of the two return pipes (18) passes through the partition (2) and is fixedly connected and communicated with the cooling box (10).

7. A cooling and shaping device for a blowout preventer housing after forging, as described in claim 6, characterized in that: Both return pipes (18) are located to the left of the partition (2).

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