A kind of pressure fan tank assembly for super-large depth saturation cabin environmental control system

Abstract

The application provides a pressure-resistant fan tank assembly for a super-large-depth saturation chamber environment control system, and belongs to the technical field of auxiliary equipment related to saturation diving operations. The pressure-resistant fan tank assembly for the super-large-depth saturation chamber environment control system comprises a vertical tank body, the lower end of the tank body is a closed end, and the upper end is an open end; a cover is detachably fixed to the open end of the tank body and used for closing the open end of the tank body; an air inlet is formed in one side of the tank body; an air outlet is formed in the cover; the cover is further provided with a through hole for the joint entry of strong electricity, weak electricity and a cooling water pipe and a through-passage part; a plurality of connecting holes for fixing and connecting the fan are arranged on the cover; all the connecting holes are located on the same circumference, the air outlet is connected with the inside of the tank body and located in the region surrounded by all the connecting holes; and the through hole is connected with the inside of the tank body and located between the connecting holes and the inner wall of the tank body. The fan tank assembly has a compact structure, a reasonable layout, and is convenient for the installation of the fan and use.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of auxiliary equipment related to saturation diving operation, and relates to a super-large depth saturation chamber environment control system, in particular to a pressure-resistant fan tank assembly for a super-large depth saturation chamber environment control system. BACKGROUND

[0002] Deep saturation diving refers to a long-time diving work of a diver directly exposed to water at a depth of more than 120 meters (even up to 300-500 meters). Under this operation mode, the diver first needs to stay in a high-pressure environment saturation chamber for a long time to adapt to the high-pressure environment at a large depth underwater, and then directly enters and exits the water at a large depth to carry out work, which can last for up to one month. The gas in such a high-pressure environment saturation chamber is generally composed of helium, oxygen, a small amount of carbon dioxide, water and nitrogen, and the pressure in the chamber generally exceeds 12 standard atmospheres (even up to 30-50 standard atmospheres). When the diver is adapting to the high-pressure environment and resting in the high-pressure environment saturation chamber, oxygen needs to be taken in and carbon dioxide needs to be exhaled to maintain the health needs of the diver. The environment control system for controlling the environment in the saturation chamber is an important supporting equipment of the high-pressure environment saturation chamber, which can realize the control of the gas environment in the saturation chamber, and the main functions include oxygen supply, heating / cooling of the environment gas in the chamber, removal of CO2 in the chamber, and reduction of humidity in the chamber. The fan is an important device for realizing the circulation of gas. Since the noise of the fan in operation is high, it is directly placed in the living chamber, which will affect the normal life of the diver, so a pressure-resistant fan tank needs to be separately arranged to place the fan.

[0003] Chinese patent application file (publication number: CN118034416A; publication date: May 14, 2024) discloses an external environment control system for a pressurized chamber, which includes a high-pressure water module, a harmful gas removal module, a fan module, a first gas control module, a second gas control module and a control module; the control module is used to start the fan module, and the gas in the pressurized chamber enters the harmful gas removal module under the drive of the fan module; the fan module includes a fan tank, the fan tank is fixed with a fan, the inlets of the fan tank are connected with the lower outlets of the first and second harmful gas absorption tanks through pipelines, and the outlet of the fan tank is connected with the first gas control module through a pipeline. The above patent document does not disclose the specific structure of the fan tank, and the traditional pressure-resistant fan tank has a relatively large overall volume, the internal structure is not compact enough, and the overall layout is not reasonable enough. SUMMARY

[0004] The present application provides a pressure-resistant fan tank assembly for a super-large depth saturation chamber environment control system to solve the above problems existing in the prior art, and the technical problem to be solved by the present application is how to improve the structural compactness and overall layout rationality of the pressure-resistant fan tank assembly.

[0005] The object of the present application can be achieved by the following technical solutions:

[0006] A pressure-resistant fan tank assembly for a super-large depth saturation cabin environmental control system, comprising a vertical tank body, the lower end of the tank body being a closed end and the upper end being an open end; characterized in that the open end of the tank body is detachably fixed with an end cover for closing the open upper end of the tank body.

[0007] An air inlet is formed on one side of the tank body; an air outlet is formed on the end cover; a through hole for the joint entry of strong current, weak current and cooling water pipes and a water-tight cabin-penetrating piece are further provided on the end cover.

[0008] A plurality of connection holes for fixedly connecting the fan are provided on the end cover; all the connection holes are located on the same circumference, the air outlet is in communication with the inside of the tank body and is located within the region enclosed by all the connection holes.

[0009] The through hole is in communication with the inside of the tank body and is located between the connection holes and the inner wall of the tank body.

[0010] The working principle is as follows: the fan installed in the tank body in the present application is a vortex fan, the motor of the fan is cooled by water cooling, the axial direction of the fan is consistent with the axial direction of the tank body when the fan is installed in the tank body, and the impeller of the fan is close to the position of the end cover; the motor of the fan is located away from the end cover, and the end close to the impeller of the motor has a flange connection disc for fixedly connecting with the end cover. The air inlet of the tank body in the present application is in communication with the saturation cabin through an air inlet pipe, and the air outlet on the end cover is in communication with the saturation cabin through an air outlet pipe, thus forming a circulating air duct, the function of the fan is to drive the gas in the saturation cabin to circulate in the circulating air duct, thereby providing conditions for the removal of harmful gases and the control of temperature and humidity in the living cabin of the saturation cabin. The fan tank assembly in the present application places the fan in an environment with the same pressure as the saturation cabin, thereby ensuring that the fan can work normally. The fan can adapt to an environmental background pressure of 10 MPa.

[0011] The fan tank assembly in the present application has compact structure, reasonable layout, and is convenient for the installation of the fan, and is easy to use.

[0012] In the above-mentioned pressure-resistant fan tank assembly for a super-large depth saturation cabin environmental control system, a connecting bolt for fixedly connecting the fan is inserted into each of the connection holes; the center line of the circle formed by all the connection holes is eccentrically arranged with the central axis of the tank body.

[0013] By adopting the technical scheme, the motor strong current cable, weak current cable and cooling water pipe of the fan are led out from the end face of the motor tail, pass through the gap between the fan side and the inner wall of the tank body, and do not occupy the radial space of the tank body, so that the internal layout is more reasonable and the structure is more compact. The strong current cable, weak current cable and cooling water pipe are connected through the water-tight cabin penetrating part on the end cover and the outside, and the driver of the motor can be located in a normal pressure environment, thereby improving the service life.

[0014] In the above-mentioned pressure-resistant fan tank assembly for super-large depth saturation cabin environmental control system, the number of the connecting holes and the connecting bolts is four; the center line of the circle formed by all the connecting holes is eccentric to the central axis of the tank body by 30-40 mm.

[0015] The eccentric distance between the center line of the circle formed by the connecting holes and the central axis of the tank body is preferably 35 mm; by adopting the technical scheme, the penetration space requirement of the motor strong current cable, weak current cable and cooling water pipe can be met, and the space is maximized.

[0016] In the above-mentioned pressure-resistant fan tank assembly for super-large depth saturation cabin environmental control system, the outer side of the open end of the tank body has an annular boss, the end cover is a flange plate, and the periphery of the end cover is fixedly connected to the annular boss by a plurality of groups of fixing bolts and fixing nuts.

[0017] By adopting the technical scheme, the fixed connection of the end cover and the tank body is facilitated, and the stability and reliability of the connection are ensured.

[0018] In the above-mentioned pressure-resistant fan tank assembly for super-large depth saturation cabin environmental control system, an annular groove is formed in the annular boss, the side surface of the end cover facing the annular boss has an annular protrusion, a sealing ring is embedded in the annular groove, and the annular protrusion is inserted into the annular groove and abuts against the sealing ring.

[0019] By adopting the technical scheme, the sealing property of the connection between the end cover and the tank body can be effectively improved.

[0020] In the above-mentioned pressure-resistant fan tank assembly for super-large depth saturation cabin environmental control system, the air outlet and the through hole on the end cover are arranged at intervals, and a first flange connecting piece is arranged on the outer side of the air outlet of the tank body; when the fan is fixedly installed in the tank body, the air outlet of the tank body is opposite to the impeller air outlet at one end of the fan, and the strong current cable, weak current cable and cooling water pipe are led out from the other end of the fan, pass through the gap between the fan shell and the inner wall of the tank body, and then pass out through the through hole and the water-tight cabin penetrating part.

[0021] The first flange connecting piece is used for connecting the air outlet pipe, and by adopting the technical scheme, the space layout requirement can be met, the mutual interference between the components can be reduced, and assembly is facilitated.

[0022] In the above-mentioned super-large depth saturation cabin environment control system pressure fan tank assembly, the air inlet is located at the middle or near the lower part of the side of the tank body, and the outside of the air inlet of the tank body is provided with a second flange connecting piece.

[0023] The second flange connecting piece is used to connect the air inlet pipe. By adopting the above technical scheme, the position and layout of the air inlet and the air outlet are convenient for the circulation of airflow, reduce turbulence, and also facilitate the installation and connection of the air inlet pipe and the air outlet pipe, avoiding interference.

[0024] In the above-mentioned super-large depth saturation cabin environment control system pressure fan tank assembly, the end face of the closed end of the tank body is arc-shaped, and the outside of the closed end of the tank body is provided with a plurality of supporting feet, and all the supporting feet are uniformly and spacedly distributed along the circumference of the tank body.

[0025] By adopting the above technical scheme, the stability of the tank body installation and placement, the sealing and pressure resistance of the tank body can be improved, and the smooth circulation of airflow can be ensured.

[0026] In the above-mentioned super-large depth saturation cabin environment control system pressure fan tank assembly, the weight of the tank body is 1650kg-1850kg, the outer diameter of the tank body is 800mm-900mm, and the height of the tank body is 1400mm-1500mm.

[0027] As a preferred scheme, the weight of the tank body in the application is 1750kg, the outer diameter is 855mm, and the height is 1440mm; the maximum working pressure is 10MPa. The tank body can be made of 6061 aluminum alloy material; this size specification has the best cost performance.

[0028] Compared with the prior art, the application has the following advantages:

[0029] 1. The fan tank assembly structure in the application is compact, reasonable in layout, and convenient for installation of the fan, and easy to use.

[0030] 2. In the application, the fan and the tank body are eccentrically arranged, which can meet the space requirements of penetrating motor strong current, weak current cable and cooling water pipe, and maximize the space saving.

[0031] 3. The fan outlet of the application has a groove type end face sealing structure. After the fan is assembled with the end cover, the fan outlet connected to the end cover at the fan outlet forms an effective sealing air duct structure.

[0032] 4. The layout structure design of the tank body in the application can reduce the mutual interference between the components and ensure the smooth circulation of airflow. BRIEF DESCRIPTION OF DRAWINGS

[0033] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the embodiments so as to illustrate exemplary principles of the embodiments. The same reference numerals in different figures identify the same element, and these drawings are not intended to be limiting in that regard, unless otherwise specified. The figures in the drawings are not necessarily drawn to scale.

[0034] Figure 1 is a front view structural schematic diagram of a fan tank assembly in the present application.

[0035] Figure 2 is a use state schematic diagram of a fan tank assembly in the present application.

[0036] Figure 3 is a partial cross-sectional structural schematic diagram of a fan tank assembly after installation of a fan in the present application.

[0037] Figure 4 is Figure 3 is a local enlarged structural schematic diagram of A in the present application.

[0038] Reference signs: 10, tank body; 11, air inlet; 12, annular boss; 121, annular groove; 20, end cover; 21, through hole; 22, watertight passage piece; 23, connecting hole; 24, annular protrusion; 25, air outlet; 30, connecting bolt; 40, fixing bolt; 50, sealing ring; 60, first flange connecting piece; 70, second flange connecting piece; 80, supporting leg; 90, fan; 91, motor; 92, impeller. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in the present specification are for the purpose of illustration only. In the description of the present application, the terms "first", "second" are only for the purpose of description and cannot be understood as indicating relative importance or implying the number of the indicated technical features. Therefore, unless otherwise specified, the features with "first", "second" can explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "comprise" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof can be present or added.

[0040] Furthermore, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intermediate medium, or internal communication of two elements. All technical and scientific terms used in the specification have the same meaning as understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0041] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as there is no conflict.

[0042] The fan tank assembly in the present application places the fan 90 in the same environment as the internal pressure of the saturation cabin, so as to ensure that the fan 90 can work normally. The fan 90 adapts to such an environmental background pressure as 10 MPa.

[0043] As shown in Figure 1 The large-depth saturation cabin environmental control system in the present embodiment uses a pressure-resistant fan tank assembly, which includes a vertical tank body 10. The tank body 10 can be made of 6061 aluminum alloy material or stainless steel material. The weight of the tank body 10 ranges from 1650 kg to 1850 kg, the outer diameter of the tank body 10 ranges from 800 mm to 900 mm, and the height of the tank body 10 ranges from 1400 mm to 1500 mm. As a preferred solution, the weight of the tank body 10 in the present application can be selected as 1750 kg, the outer diameter is 855 mm, the height is 1440 mm, and the maximum working pressure is 10 MPa.

[0044] As shown in Figure 1 and Figure 2 The lower end of the tank body 10 is a closed end, and the upper end is an open end. The end face of the closed end of the tank body 10 is in the shape of a circular arc. A plurality of supporting feet 80 are arranged on the outside of the closed end of the tank body 10. All the supporting feet 80 are uniformly and circumferentially distributed on the tank body 10, which can improve the stability of the installation and placement of the tank body 10, and the sealing and pressure resistance of the tank body 10, and at the same time ensure the smooth circulation of airflow in the tank body 10.

[0045] As shown in Figure 2 , Figure 3 and Figure 4As shown, the open end of the tank body 10 is detachably fixed with an end cover 20 for closing the open end of the tank body 10; specifically, the open end of the tank body 10 has an annular boss 12, the end cover 20 is a flange, and the periphery of the end cover 20 is fixed on the annular boss 12 by a plurality of groups of fixing bolts 40 and fixing nuts; in this way, the end cover 20 and the tank body 10 are fixedly connected, and the stability and reliability of the connection are ensured; the annular boss 12 is also provided with an annular groove 121, the side of the end cover 20 facing the annular boss 12 has an annular protrusion 24, a sealing ring 50 is embedded in the annular groove 121, and the annular protrusion 24 is inserted into the annular groove 121 and abuts against the sealing ring 50; in this way, the sealing property of the connection between the end cover 20 and the tank body 10 can be effectively improved.

[0046] As shown in Figure 2 and Figure 3 , the end cover 20 is provided with an air outlet 25; the end cover 20 is also provided with a through hole 21 for the common entry of strong current, weak current and cooling water pipes and a water-tight cabin-penetrating piece 22, the water-tight cabin-penetrating piece 22 is inserted into the through hole 21, the water-tight cabin-penetrating piece 22 is a product of the prior art, and its structure will not be described here again, and it can realize the sealed penetration of the strong current, weak current and cooling water pipes on the tank body 10. The air outlet 25 and the through hole 21 on the end cover 20 are arranged at intervals, the outside of the air outlet 25 of the tank body 10 is provided with a first flange connecting piece 60, and the first flange connecting piece 60 is used for connecting an air outlet pipe; one side of the tank body 10 is provided with an air inlet 11, and the air inlet 11 is located at the middle or near the lower part of the side of the tank body 10; the outside of the air inlet 11 of the tank body 10 is provided with a second flange connecting piece 70; the second flange connecting piece 70 is used for connecting an air inlet pipe; the positions of the air inlet 11 and the air outlet 25 are arranged to facilitate the circulation of airflow, reduce turbulence, and also facilitate the installation and connection of the air inlet pipe and the air outlet pipe, avoiding interference.

[0047] As shown in Figure 2 and Figure 3 , the end cover 20 is provided with a plurality of connecting holes 23 for fixedly connecting a fan 90; all the connecting holes 23 are located on the same circumference, and each connecting hole 23 is inserted with a connecting bolt 30 for fixedly connecting the fan 90; in the present application, the number of the connecting holes 23 and the connecting bolts 30 can be four.

[0048] As shown in Figure 2 and Figure 3As shown, the air outlet 25 in the application is connected to the inside of the tank body 10 and is located in the area surrounded by all the connecting holes 23; the through hole 21 is connected to the inside of the tank body 10 and is located between the connecting holes 23 and the inner wall of the tank body 10; the center line of the circle formed by all the connecting holes 23 is eccentrically arranged with the central axis of the tank body 10. Specifically, the center line of the circle formed by all the connecting holes 23 is eccentrically arranged with the central axis of the tank body 10 by 30mm-40mm, preferably 35mm; after the fan 90 is fixedly installed in the tank body 10, the air outlet 25 of the tank body 10 is opposite to the air outlet of the impeller 92 at one end of the fan 90, and the strong current, weak current and cooling water pipes are led out from the other end of the fan 90, then pass through between the shell of the fan 90 and the inner wall of the tank body 10, and finally pass out from the through hole 21 and the water-tight cabin-penetrating piece 22, so that the radial space of the tank body 10 is not occupied, the strong current, weak current cables and cooling water pipes are connected with the outside through the water-tight cabin-penetrating piece 22 on the end cover 20, and the driver of the motor 91 can be located in the normal pressure environment to improve its service life.

[0049] The tank body 10 in the embodiment is manufactured, inspected and accepted according to GB / T150-2011 "Pressure Vessels", and is supervised by TSG21-2016 "Supervision Regulation for Safety Technology of Fixed Pressure Vessels". The material thickness of the elliptical head at the lower end of the tank body 10 in the embodiment is determined by the factory, and the minimum thickness of the formed head is not less than 23.7mm; after the elliptical head is manufactured, it is welded at the lower end of the cylinder of the tank body 10 to form the closed end of the tank body 10.

[0050] In the embodiment, arc welding is used for welding between the cylinder of the tank body 10 and the elliptical head at the lower end, and the welding rod is E308-16. If argon arc welding is used, the welding wire steel grade is H08Cr21Ni10. The welding process between each joint on the tank body 10 and the tank body 10 adopts full penetration process, and 100% radiographic testing and 100% penetration testing are performed after welding; the radiographic testing is qualified according to NB / T47013.2 standard II level, the penetration testing is qualified according to NB / T47013.5 standard I level, and the radiographic testing technical level is not less than AB level. The inner and outer surfaces of the tank body 10 are pickled and passivated, and the coating and transportation packaging of the tank body 10 are performed according to NB / T10558-2021. The tank body 10 is also provided with a safety valve, which is installed on the pipeline close to the tank body 10, and the set pressure is 10.5MPa, and the deviation should not exceed ±3%.

[0051] After the whole fan tank assembly is manufactured, water pressure test is performed at 13.75MPa gauge pressure, the liquid temperature should not be lower than 5℃ during the test, and the water should be drained and dried after the test is qualified.

[0052] The working principle is as follows: the fan 90 installed in the tank body 10 in the application selects a vortex fan 90, the motor 91 of the fan 90 is cooled in a water cooling mode, when the fan 90 is installed in the tank body 10, the axial direction of the fan 90 is consistent with the axial direction of the tank body 10, and the impeller 92 of the fan 90 is close to the position of the end cover 20; the motor 91 of the fan 90 is located away from the end cover 20, and the end close to the impeller 92 of the motor 91 has a flange connecting disc for fixed connection with the end cover 20. In the application, the air inlet 11 of the tank body 10 is connected with the saturation cabin through an air inlet pipe, and the air outlet 25 on the end cover 20 is connected with the saturation cabin through an air outlet pipe, so as to form a circulating air duct, and the function of the fan 90 is to drive the gas in the saturation cabin to circulate in the circulating air duct, so as to provide conditions for harmful gas removal and temperature and humidity control of the living cabin of the saturation cabin. In the application, the penetration space requirement of the motor 91, the weak current cable and the cooling water pipe can be met, and the space is maximized. The internal layout is more reasonable, the structure is more compact, and the installation of the fan 90 is facilitated, and the use is convenient.

[0053] In the application, the cooling water pipe includes an inlet pipe and an outlet pipe, a bypass pipe is arranged between the inlet pipe and the outlet pipe on one side of the motor 91, and a flow regulating valve is arranged on the bypass pipe. The bypass pipe can adjust the water flow entering the motor 91, and when the heat dissipation requirement is not high, the cooling water flow entering the motor 91 can be reduced to save energy. A plurality of temperature sensors are arranged on the outer surface of the shell of the motor 91, the temperature of the motor can be monitored in real time through the temperature sensors, and the opening degree of the flow regulating valve is adjusted based on the average value of the plurality of temperature sensors. The temperature sensors provide accurate temperature monitoring data, so that the system can automatically adjust the flow of cooling water according to the actual heat dissipation requirement, thereby maximizing the energy efficiency and energy saving effect under the premise of ensuring that the motor 91 does not overheat. A pressure sensor is further arranged in the tank body 10, the pressure change in the tank body is monitored in real time through the pressure sensor, the opening degree of the flow regulating valve is preliminarily adjusted according to the pressure change, and after a predetermined time, the opening degree of the flow regulating valve is further adjusted based on the monitoring data of the temperature sensor, so as to ensure that the motor works in a suitable temperature range. The pressure sensor can quickly respond to the pressure change in the tank body, and the cooling water flow is increased in advance to cope with the potential temperature rise, and this kind of advance adjustment mode effectively prevents the occurrence of overheating. For example, as the process of diving into the seabed, the pressure of the working environment will increase, and through this kind of adjustment mode, the cooling water flow can be increased in advance.

[0054] The above examples are only used to illustrate the technical solutions of the present application, but not to limit the present application; the technical features in the above examples or different examples can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for simplicity; although the present application has been described in detail with reference to the foregoing examples, it should be understood by those of ordinary skill in the art that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pressure-resistant blower tank assembly for an environmental control system of an ultra-deep saturation tank, comprising a vertical tank body (10), wherein the lower end of the tank body (10) is a closed end and the upper end is an open end; characterized in that: The open end of the tank body (10) is detachably fixed with an end cover (20) for closing the upper end opening of the tank body (10); An air inlet (11) is provided on one side of the tank body (10); an air outlet (25) is provided on the end cover (20); and a through hole (21) for the common inlet and outlet of strong current, weak current and cooling water pipes and a watertight penetration member (22) are also provided on the end cover (20); The end cover (20) is provided with a plurality of connection holes (23) for fixedly connecting to the fan (90); all the connection holes (23) are located on the same circumference, the air outlet (25) is connected to the interior of the tank body (10), and the air outlet (25) is located in an area surrounded by all the connection holes (23); The through hole (21) is connected to the interior of the tank body (10), and the through hole (21) is located between the connecting hole (23) and the inner wall of the tank body (10); A connecting bolt (30) for fixing the fan (90) is inserted into each of the connecting holes (23); the center line of the circle formed by all the connecting holes (23) is eccentrically arranged with respect to the central axis of the tank body (10); The number of the connecting holes (23) and the number of the connecting bolts (30) are both four; the eccentric distance between the center line of the circle formed by all the connecting holes (23) and the central axis of the tank body (10) is 30 mm to 40 mm; The air outlet (25) and the through hole (21) on the end cover (20) are arranged at intervals, and a first flange connector (60) is provided on the outer side of the air outlet (25) of the tank body (10); when the fan (90) is fixedly installed in the tank body (10), the air outlet (25) of the tank body (10) is directly opposite to the air outlet of the impeller (92) at one end of the fan (90), and the strong current, weak current and cooling water pipes are led out from the other end of the fan (90) and then pass through between the fan (90) shell and the inner wall of the tank body (10) and then pass out from the through hole (21) and the watertight penetration part (22); the air inlet (11) is located in the middle or near the lower part of the side of the tank body (10), and a second flange connector (70) is provided on the outer side of the air inlet (11) of the tank body (10); The axial direction of the fan (90) is consistent with the axial direction of the tank body (10), and the impeller (92) of the fan (90) is located close to the end cover (20); the motor (91) of the fan (90) is located away from the end cover (20), and one end of the motor (91) close to the impeller (92) has a flange connection plate for fixed connection with the end cover (20).

2. The pressure-resistant fan tank assembly for the environmental control system of the ultra-deep saturation tank according to claim 1 is characterized in that: The outer side of the open end of the tank body (10) is provided with an annular boss (12), the end cover (20) is a flange, and the four sides of the end cover (20) are fixedly connected to the annular boss (12) by a plurality of sets of fixing bolts (40) and fixing nuts.

3. The pressure-resistant blower tank assembly for the environmental control system of the ultra-deep saturation tank according to claim 2 is characterized in that: An annular groove (121) is provided on the annular boss (12), and an annular protrusion (24) is provided on the side of the end cover (20) facing the annular boss (12). A sealing ring (50) is embedded in the annular groove (121), and the annular protrusion (24) is inserted into the annular groove (121) and abuts against the sealing ring (50).

4. The pressure-resistant blower tank assembly for the environmental control system of the ultra-deep saturation tank according to claim 1, 2 or 3, characterized in that: The closed end surface of the tank body (10) is in an arc shape; a plurality of supporting legs (80) are provided on the outside of the closed end of the tank body (10), and all the supporting legs (80) are evenly spaced and distributed along the circumference of the tank body (10).

5. The pressure-resistant fan tank assembly for the environmental control system of the ultra-deep saturation tank according to claim 1, 2 or 3, characterized in that: The weight of the tank body (10) is 1650 kg to 1850 kg, the outer diameter of the tank body (10) is 800 mm to 900 mm, and the height of the tank body (10) is 1400 mm to 1500 mm.

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