CN116672937A - Stirring device with double-isolation cabin structure for high-pressure cabin - Google Patents

Abstract

The invention provides a stirring device for a high-pressure cabin with a double-isolation cabin structure, which comprises a cabin top driving device and an in-cabin stirring device, wherein the cabin top driving device comprises a driving mechanism, a double-cabin structure and a compensation system; the in-cabin stirring device comprises a conduit structure and a stirring structure; the high-pressure cabin pressure output hydraulic pipeline receives high-pressure fluid in the high-pressure inspection cabin and inputs the high-pressure fluid into the two bag-type compensators through the lower cabin and the tee joint. The bag type compensator transmits the pressure in the high-pressure test cabin to the upper cabin body and the lower cabin body through the upper cabin pressure input hydraulic pipeline and the lower cabin pressure input hydraulic pipeline, so that the pressure balance among the upper cabin, the lower cabin and the high-pressure test cabin is realized, and the difficulty of dynamic sealing of the stirring upper shaft, the middle isolation plate and the lower cabin body bottom plate is reduced. The invention realizes the uniform distribution of medium in the large-size hyperbaric chamber, prevents the intervention of a motor in the test environment, and can not influence the experimental study in the cold spring hyperbaric chamber.

Description

A stirring device with a double isolated compartment structure for a hyperbaric cabin

technical field

The invention relates to the field of high-pressure stirring, in particular to a stirring device with a double isolated compartment structure used in a hyperbaric chamber.

Background technique

The cold spring chamber is a scientific research equipment for studying the cold seep ecosystem by simulating the environment of the seabed cold spring area. Based on the functional characteristics of the cold spring chamber to simulate the growth law of marine organisms in the marine environment, in order to ensure the stability of the environment in the cold spring chamber, the design of the cold spring chamber should be able to Ensure the circulation of water in the cold spring cabin. At the same time, there is high-risk gas in the medium in the cold spring chamber, and it is necessary to ensure that the medium will not come into contact with the motor during the work process to cause a safety accident. Therefore, in order to ensure the smooth and effective operation of the whole system, it is of great significance to design a stirring system that can ensure the homogeneous conditions of the cold spring chamber.

The general stirring device rarely involves the stirring problem of the large-scale hyperbaric chamber, and it is often difficult to solve the dynamic sealing problem of the stirring device in a high-pressure environment; at the same time, how to prevent the motor from interfering with the test environment is also a difficulty of the stirring device. The cabin has a stirring device with a double isolated compartment structure, which can achieve the purpose of stirring and homogenizing a large-scale hyperbaric cabin under the condition that the motor does not interfere with the cold spring test environment.

The mixing device designed in the present invention for a hyperbaric chamber with a double isolation compartment structure can realize the homogeneous stirring requirement for a large-scale high pressure test chamber by designing a double isolation compartment structure, a compensation system and a conduit structure.

Contents of the invention

The purpose of the present invention is to overcome the high-pressure underwater environment in the hyperbaric cabin and solve the difficult problem of dynamic sealing under the high-pressure environment to provide a stirring device with a double isolation compartment structure for the hyperbaric cabin, so as to realize the uniformity of the medium in the large-scale hyperbaric cabin The distribution prevents the motor from intervening in the test environment, and cannot affect the experimental research inside the cold spring hyperbaric chamber.

The purpose of the present invention is achieved in that it comprises a roof driving device and a stirring device in the cabin, and said roof driving device includes a driving mechanism, a double-cabin structure and a compensation system;

The driving mechanism includes an underwater driving motor and an upper stirring shaft; the underwater driving motor is installed on the motor support plate and fixed through screw connections; the upper stirring shaft and the output shaft of the underwater driving motor are splined Structural connection, through the upper cabin and the lower cabin into the hyperbaric cabin, the stirring upper shaft and each cabin are supported by water-lubricated bearings.

The double isolated cabin structure includes an upper cabin roof, an upper cabin body, an intermediate isolation plate, a lower cabin body, a lower cabin floor and a motor support plate; the upper cabin roof is equipped with relevant hydraulic interfaces and The control interface of the underwater drive motor is connected to the fixed motor support plate by bolts; the upper cabin body is connected to the upper cabin roof and the middle isolation plate by bolts to form the upper cabin; the middle isolation plate is connected to the upper cabin body, The lower cabin is connected and fixed; the motor support plate is respectively fixed with the upper cabin and the underwater driving motor through bolts.

The compensation system includes a bladder compensator, a hyperbaric cabin pressure output hydraulic pipeline, an upper cabin pressure input hydraulic pipeline and a lower cabin pressure input hydraulic pipeline; the bladder compensator is bound and fixed outside the upper cabin; The pressure output hydraulic pipeline of the hyperbaric cabin is connected to the interior of the hyperbaric cabin and the pressure input port of the bladder compensator through a joint; the pressure input hydraulic pipeline of the upper cabin is connected to the pressure output port of the bladder compensator and the upper cabin through a joint; The pressure input hydraulic pipeline of the lower compartment is connected to the pressure output port of the bladder compensator and the lower compartment through a joint;

The stirring device in the cabin includes a conduit structure and a stirring structure;

The conduit structure includes an upper conduit, a lower conduit, a conduit support frame and a stirring shaft support frame; the upper conduit is fixed through a threaded connection, and is connected and fixed with the lower conduit and the conduit support frame through a threaded connection; the lower conduit is passed through The threaded connection is fixed, and the upper conduit and the conduit support frame are connected and fixed through the threaded connection; the conduit support frame is installed on the inner wall of the hyperbaric chamber, and is fixed on the welding block of the high-pressure experimental cabin through the threaded connection; the stirring shaft support frame is fixed Inside the conduit, the stirring shaft is supported by bearings.

The stirring structure includes a stirring lower shaft, a universal joint shaft coupling and a stirring blade; the stirring lower shaft is supported on the stirring shaft supporting frame through bearings and its own shoulder structure; the universal joint shaft coupling is passed through The holes at both ends connect the upper stirring shaft and the lower stirring shaft, and are fastened by locking bolts; the stirring blades are installed on the lower side of the lower stirring shaft, and are fixed by side screws.

The present invention also includes such structural features:

Both the upper compartment and the lower compartment are designed with O-ring grooves and Gray ring grooves, and the O-rings are placed in the O-ring grooves to form a static sealing structure combining axial sealing and radial sealing to resist internal Pressure; the gray ring groove is located on the contact surface between the upper and lower chambers and the upper stirring shaft, forming a dynamic sealing structure, which isolates each chamber and prevents the underwater drive motor from intervening in the hyperbaric chamber environment.

The top of the upper cabin is designed with an electrical interface for the underwater driving motor and a hydraulic interface for the upper cabin. The electrical interface for the underwater driving motor is used to control the underwater driving motor and supply power to the driving motor. The hydraulic interface for the upper cabin is used to receive the capsule compensator. Input hyperbaric chamber pressurized fluid.

The lower cabin is designed with a pressure pipe in the hyperbaric cabin and a hydraulic interface in the lower cabin. The pressure pipeline in the hyperbaric cabin passes through the lower cabin and enters the hyperbaric cabin to input the pressure of the hyperbaric cabin into the bladder compensator; the hydraulic interface in the lower cabin is used to receive the bladder The hyperbaric chamber pressure input by the type compensator.

The conduit is located in the straight pipe section of the hyperbaric chamber and is divided into upper and lower sections. The upper section of the conduit has a smaller diameter and the lower section has a larger diameter, which can maximize the diffusion of the disturbance generated by the stirring blades and improve the stirring efficiency.

Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention adopts the structural design of double isolated compartments, which isolates the underwater driving motor from the internal environment of the hyperbaric chamber, preventing the underwater driving motor from interfering with the interior of the hyperbaric chamber The environment improves the overall safety performance and ensures the smooth progress of the high pressure test. 2. The present invention adopts the scheme design of the compensation system, and transmits the internal pressure of the hyperbaric cabin into the upper and lower compartments through the capsule compensator, thereby solving the difficult problem of dynamic sealing in a high-pressure environment. 3. O-rings are used for static sealing between each cabin of the present invention, and a sealing structure design combining axial sealing and radial sealing is adopted to overcome the high-pressure underwater environment in the high-pressure cabin. 4. The present invention adopts a segmented bell-mouth-type conduit design. The conduit has the structural characteristics of narrow top and wide bottom, which can diffuse the disturbance generated by the stirring blade to the greatest extent, and realize the uniform distribution of the medium in the large-scale high-pressure chamber .

Description of drawings

Fig. 1 is the axonometric view of the stirring device that is used for the hyperbaric chamber of the present invention and has double isolated compartment structure;

Fig. 2 is the structural representation of cabin top driving device of the present invention;

Fig. 3 is the structural representation of compensation system of the present invention;

Fig. 4 is the structural representation of stirring device in the cabin of the present invention;

Fig. 5 is the sectional view of stirring device in the cabin of the present invention;

Figure 6a-b is a schematic diagram of installation of the roof driving device of the present invention;

Fig. 7 a-d is the installation schematic diagram of the stirring device in the cabin of the present invention;

In the figure, 1-upper cabin roof; 2-underwater drive motor; 3-capsule compensator; 4-upper cabin; 5-middle partition; 6-lower cabin; 7-lower cabin floor; 8 -stirring upper shaft; 9-universal joint coupling; 10-stirring lower shaft; 11-conduit support frame; 12-upper conduit; 13-stirring blade; 14-down conduit; 15-motor support frame; 16-high pressure Cabin pressure output hydraulic pipeline; 17-upper cabin pressure input hydraulic pipeline; 18-lower cabin pressure input hydraulic pipeline; 19-tube bearing support frame; 20-high pressure test cabin.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

1 and 2, the upper cabin roof 1, the upper cabin body 4 and the middle isolation plate 5 form the upper cabin, and the lower cabin bottom plate 7, the lower cabin body 6 and the middle isolation plate 5 form the lower cabin , the upper cabin and the lower cabin are filled with high-pressure distilled water to prevent the fluid in the cabin from polluting the environment in the cabin; two O-ring grooves are set between each plate and the cabin to form an axial static seal and a radial seal with the upper cabin. Static sealing prevents the underwater driving motor from interfering with the environment of the high-voltage test chamber; the upper cover 1 of the upper chamber is provided with threaded holes for installing the motor support plate. Each plate and the cabin body are fixedly connected by bolts.

1 and 2, the stirring upper shaft 8 is supported on the intermediate isolation plate 5 and the lower cabin bottom plate 7 through the water-lubricated bearing, and the water-lubricated bearing is pressed on the intermediate isolation plate 5 and the lower cabin through the bearing transparent cover through threaded connection on the bottom plate 7. The middle partition plate 5 and the lower cabin bottom plate 7 are provided with gray ring grooves for dynamic sealing between the upper shaft 8 and the middle partition plate 5 and the lower cabin bottom plate 7, so as to prevent leakage from affecting the environment of the high-pressure experimental cabin.

1, 2 and 3, the hyperbaric chamber pressure output hydraulic pipeline 16, the upper cabin pressure input hydraulic pipeline 17, the lower cabin pressure input hydraulic pipeline 18 and the bladder compensator 3 form a compensation system. The pressure output hydraulic pipeline 16 of the hyperbaric chamber receives the high-pressure fluid in the high-pressure experimental chamber, and enters the two bladder compensators 3 through the lower chamber and the tee. The bladder compensator 3 transmits the pressure in the high-pressure test cabin to the upper and lower cabins through the upper cabin pressure input hydraulic pipeline 17 and the lower cabin pressure input hydraulic pipeline 18, so as to realize the connection between the upper cabin, the lower cabin and the high-pressure test cabin 20. pressure balance, reducing the difficulty of dynamic sealing of the stirring upper shaft 8, the middle separating plate 5 and the bottom plate 7 of the lower cabin.

1 and 4, the upper conduit 12 and the lower conduit 14 constitute a conduit supported in the high-pressure test chamber 20 through three conduit support frames, the conduit is narrow at the top and wide at the bottom, ensuring that the liquid disturbance can be transmitted to the entire cabin; The three conduit support frames are screwed through flanges on the upper conduit 12 and the lower conduit 14 , and are fixedly connected by nine welding blocks located on the inner wall of the high pressure test chamber 20 .

1 , 4 and 5 , the lower stirring shaft 10 is installed in the upper conduit 12 and the lower conduit 14 to form the inside of the conduit. The guide tube bearing support frame 19 is located inside the guide tube, the connection between the upper guide tube 12 and the lower guide tube 14 is threaded through the guide tube bearing support frame 19, and the bearing is pressed on the guide tube bearing support frame 19 through the bearing transparent cover. The stirring blade 13 is fixed to the lower stirring shaft 10 through the side set screws, and the rotation of the blade generates a suitable disturbance, and meanwhile, the conduit transmits the suitable disturbance to the entire cabin.

With reference to Fig. 1-Fig. 7d, the present invention adopts the following installation steps:

The first step: install the O-ring of the bottom plate 7 of the lower cabin and install the lower cabin 6 through bolt connection, install the hydraulic circuit in the lower cabin; install the gray ring and water lubricated bearing of the middle isolation plate 5, and stir the upper The shaft 8 passes through the intermediate isolation plate 5, and presses the water-lubricated bearing positioned at the intermediate isolation plate 5 through the bearing transparent cover; the gray ring and the water-lubricated bearing of the lower cabin bottom plate 7 are installed, and the shaft 8 on the agitation passes through the bearing and the The middle hole of the lower cabin bottom plate 7, and press the water lubricated bearing located at the lower cabin bottom plate 7 through the bearing cover; install the O-ring of the middle isolation plate 5 and connect the upper cabin body 4 and the lower cabin body 6 by bolts; install The motor support plate 15 is on the top cover 1 of the upper cabin, and is connected to the electrical interface of the underwater driving motor cabin; the O-ring is installed between the upper cabin body 4 and the top cover 1 of the upper cabin, and the top cover 1 of the upper cabin is on the top of the underwater driving motor 2. The spline is inserted into the stirring upper shaft 8, and the upper cabin body 4 and the upper cabin roof 1 are installed and fixed through bolt connection; the compensation system is installed in the hydraulic circuit outside the cabin, the pressure output hydraulic pipeline 16, the capsule compensator 3, the upper The cabin pressure input hydraulic pipeline 17 and the upper cabin pressure input hydraulic pipeline 18, the bladder compensator 3 are bound on the outer wall of the upper cabin body 4, and the out-of-the-cabin driving device has been assembled outside the cabin so far. Input pressure to the hyperbaric cabin pressure output hydraulic pipeline 16 and the connection surface between the lower cabin and the hyperbaric cabin to test the pressure resistance, operation and sealing of the external driving device. Ensure that the equipment is working properly before entering the high-voltage test chamber for the third step of installation;

The second step: install the bearing on the conduit bearing support frame 19 between the upper and lower conduits, pass the stirring lower shaft through the conduit bearing support frame 19 and install the bearing on the shoulder of the stirring lower shaft 10, and press through the bearing through the cover Live the bearings on both sides of the shaft shoulder; connect the upper conduit 12, the conduit bearing support frame 19 and the lower conduit 14 by threads; install the conduit bearing support frame 19 on the upper part of the conduit 12, install the bearing and the bearing cover on it, and install three Tube support frame 11. So far, the off-site assembly of the in-cabin stirring device has been completed.

Step 3: After arriving at the scene, when the high-pressure test cabin is not closed, the stirring device in the hoisting cabin enters the high-pressure test cabin, and the three conduit support frames 11 are connected by bolts to fix the stirring device in the cabin. And install the universal joint coupling 9 on the top of the stirring lower shaft 10; install the external driving device on the cabin roof of the high pressure test chamber 20, and insert the stirring upper shaft 8 in the external driving device into the universal joint coupling 9 , the installer exits from the bottom of the high pressure test chamber 20, and the installation is completed so far.

The working principle of the present invention is:

The stirring device used in the hyperbaric chamber has a double isolation chamber structure, and the underwater driving motor 2 drives the stirring upper shaft 8 to drive the stirring lower shaft 8 to make the stirring blade 13 generate suitable disturbance in the high-pressure experimental chamber 20 . When it is necessary to homogenize the medium in the high-voltage test chamber, the staff starts the entire stirring device by inputting voltage and electrical signals through the underwater drive motor electrical interface provided on the top cover 1 of the upper chamber. The driving torque is transmitted to the stirring blade 13 through the stirring upper shaft 8, the universal joint coupling 9 and the stirring lower shaft 10, realizing long-distance torque transmission. The appropriate disturbance generated by the stirring blade 13 is transmitted to the entire high-pressure test chamber 20 through the conduit composed of the upper conduit 12 and the lower conduit 14, so as to achieve the purpose of homogeneous circulation. When no homogeneous treatment is required, the staff only needs to stop inputting power to the underwater drive motor 2 to stop the operation. By controlling the electric signal and power of the underwater driving motor, the control of the rotating speed of the stirring blade 13 in the cabin can be realized, and then the control of the homogenization effect of the hyperbaric cabin can be realized, and it is used for the compensation of the stirring device with a double isolation compartment structure in the hyperbaric cabin The working principle of the system is as follows: the upper cabin roof 1, the upper cabin body 4 and the middle insulation plate 5 form the upper cabin, the lower cabin bottom plate 7, the lower cabin body 6 and the middle insulation plate 5 form the lower cabin, and the upper cabin The inner and lower compartments are filled with high-pressure distilled water to form a double isolation compartment structure to prevent the fluid in the compartment from polluting the environment in the compartment.

The pressure output hydraulic pipeline 16 of the hyperbaric chamber receives the high-pressure fluid in the high-pressure experimental chamber, and enters the two bladder compensators 3 through the lower chamber and the tee. The bladder compensator 3 transmits the pressure in the high-pressure test cabin to the upper and lower cabins through the upper cabin pressure input hydraulic pipeline 17 and the lower cabin pressure input hydraulic pipeline 18, so as to realize the connection between the upper cabin, the lower cabin and the high-pressure test cabin 20. pressure balance, reducing the difficulty of dynamic sealing of the stirring upper shaft 8, the middle separating plate 5 and the bottom plate 7 of the lower cabin.

Claims (6)

1. a kind of stirring device that is used for hyperbaric cabin has double isolated compartment structure, it is characterized in that: comprise cabin top driving device and cabin stirring device, described cabin top driving device comprises driving mechanism, double compartment structure and compensating system; So The driving mechanism includes an underwater driving motor and an upper stirring shaft; the underwater driving motor is installed on the motor support plate, and the upper stirring shaft is connected with the output shaft of the underwater driving motor, and enters the hyperbaric cabin through the upper cabin and the lower cabin; The structure of the above-mentioned double isolated cabin includes the roof of the upper cabin, the upper cabin body, the middle isolation plate, the lower cabin body, the bottom plate of the lower cabin body and the motor support plate; the hydraulic interface and the control interface of the underwater drive motor are installed on the upper cabin roof, The body is connected by bolts to the top cover of the upper cabin and the middle isolation plate to form the upper cabin; the middle isolation plate is connected to the upper cabin and the lower cabin by bolts; the motor support plate is respectively fixed to the upper cabin and the underwater drive motor by bolts; The compensation system includes a bladder compensator, a pressure output hydraulic pipeline from a hyperbaric cabin, an upper cabin pressure input hydraulic pipeline, and a lower cabin pressure input hydraulic pipeline; the bladder compensator is bound and fixed outside the upper cabin; the hyperbaric cabin pressure output hydraulic pipeline The pipeline connects the interior of the high pressure chamber with the pressure input port of the bladder compensator through joints; the pressure input hydraulic pipeline of the upper cabin connects the pressure output port of the bladder compensator with the upper cabin through a joint; the pressure input hydraulic pipeline of the lower cabin connects with the bladder compensator through joints The device pressure output port and the lower chamber. 2. A kind of mixing device that is used for hyperbaric cabin according to claim 1 has double isolated compartment structure, it is characterized in that: described cabin stirring device comprises conduit structure and stirring structure; Described conduit structure comprises upper conduit, lower Conduit, conduit support frame and stirring shaft support frame; the upper conduit is connected and fixed with the lower conduit and conduit support frame through threads; the conduit support frame is installed on the inner wall of the high pressure chamber and fixed on the welding block of the high pressure experimental cabin through thread connection; the stirring shaft support The frame is fixed inside the conduit and supports the stirring shaft through bearings; the stirring structure includes the lower stirring shaft, universal joint coupling and stirring blades; the lower stirring shaft is supported on the stirring shaft support frame through the bearing and its own shoulder structure; The axial coupling connects the upper stirring shaft and the lower stirring shaft through holes at both ends, and is fastened by locking bolts; the stirring blade is installed on the lower side of the lower stirring shaft, and is fixed by side screws. 3. A stirring device for a hyperbaric chamber with a double isolated compartment structure according to claim 2, characterized in that: the upper compartment and the lower compartment are all designed with O-ring grooves and gray ring grooves, O-shaped The O-ring is placed in the O-ring groove to form a static seal structure combining axial seal and radial seal; the gray ring groove is located on the contact surface between the upper and lower compartments and the upper stirring shaft, forming a dynamic seal structure and isolating each compartment. 4. A kind of agitating device for hyperbaric cabin with double isolation compartment structure according to claim 3, characterized in that: the top of the upper compartment is designed with an electrical interface for an underwater drive motor and an upper compartment hydraulic interface, and the underwater drive The electrical interface of the motor is used to control the underwater driving motor and supply power to the driving motor, and the hydraulic interface of the upper cabin is used to receive the pressure fluid in the hyperbaric chamber input by the bladder compensator. 5. a kind of mixing device that is used for hyperbaric cabin with double isolated compartment structure according to claim 4, is characterized in that: in described lower compartment, design is provided with pressure pipeline in hyperbaric cabin and lower cabin hydraulic interface, and hyperbaric cabin pressure pipeline Enter the hyperbaric chamber through the lower chamber, and input the pressure of the hyperbaric chamber into the bladder compensator; the hydraulic interface of the lower chamber is used to receive the pressure of the hyperbaric chamber input by the bladder compensator. 6. A kind of agitating device for hyperbaric cabin with double isolated compartment structure according to claim 5, characterized in that: said conduit is located at the straight pipe section of hyperbaric cabin, and is divided into upper and lower sections, the diameter of the upper section of the conduit is small, and the diameter of the lower section is Large, the disturbance generated by the stirring blade is diffused to the greatest extent.