CN114286586A - Marine temperature self-adaptation forced air cooling rack - Google Patents
Marine temperature self-adaptation forced air cooling rack Download PDFInfo
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- CN114286586A CN114286586A CN202111475049.9A CN202111475049A CN114286586A CN 114286586 A CN114286586 A CN 114286586A CN 202111475049 A CN202111475049 A CN 202111475049A CN 114286586 A CN114286586 A CN 114286586A
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Abstract
The application discloses a temperature self-adaptive air-cooled cabinet for a ship, wherein the cabinet is a three-area cabinet consisting of an air supply area, an equipment area and an air return area, the air supply area and the equipment area are further divided into a plurality of sub-areas in vertical height, and the air supply sub-area and the equipment sub-area in the same height form a relatively independent heat dissipation unit; the public air return area collects hot air flow flowing out of the heat dissipation unit; the airflow organization in the cabinet is clear and the heat exchange efficiency is improved through the airflow stabilizing and distributing mechanism consisting of the air supply area cavity, the air supply pipe, the proportion regulating valve and the guide plate; the heat dissipation unit is combined with the multi-loop temperature control unit to form a temperature self-adaptive air cooling system with complete functions. The system realizes the zone control of the temperature and matches the running condition of the equipment in each heat dissipation unit. According to the temperature set value and the actual temperature feedback value, the cold air conveying amount of the branch circuit is controlled according to the requirement, the fine refrigeration management in different areas is realized, and the energy consumption index of unit load is further reduced.
Description
Technical Field
The application relates to a marine temperature self-adaptation air-cooled rack belongs to boats and ships data center rack cooling heat dissipation technical field.
Background
For a long time, in the field of ships, Information and Communication Technology (ICT) is not applied in a large scale due to lack of traction requirements of related services, so that a common transport ship is not provided with a single IT machine room basically except for a part of special ships for performing scientific exploration work which are provided with simple small machine rooms. In this case, the heat dissipation mode of the cabinet is not specifically designed according to the characteristics of the heat source, and a central air conditioner is generally adopted for unified cooling or a unit air conditioner is added for air supply on the basis.
According to the ship building example, the heat dissipation of the cabinet, with or without a machine room, basically follows the overall refrigeration measures of the place where the cabinet is located. The top supply/return arrangement is used primarily for central air conditioning (as shown in fig. 1) and the front direct supply arrangement is used for unit air conditioning (as shown in fig. 2). The actual ship operation proves that the refrigeration effects of the two methods are not ideal, the refrigerating capacity calculated according to the heat dissipation requirement cannot fully neutralize the heat generated by the cabinet, the main reasons are that the airflow organization is disordered, the heat exchange between cold air and hot air is insufficient, the distance between a feeding port and a return air port is short in a partial area, the fact cold air short circuit is caused, and the quantity of the arranged air outlets is limited, so that the cold air accumulation is easily formed in the partial area due to the arrangement influence of the cabinet.
In the field of large land-based machine rooms, the whole circuit is divided into two parts (as shown in fig. 3) with mutually isolated cold and hot channels by researching the form of airflow organization. At present, the cold channel is more frequently used in the form of sealing, an overhead layer is arranged at the bottom of a machine room, a cabinet is arranged in a back-to-back and face-to-face mode, a cold pool is formed after the channel formed in a face-to-face mode is sealed, a cold air outlet is arranged in the middle of the channel to form a cold channel isolated from the outside, after cold air comes out of an air conditioner, the cold air enters the cold channel after passing through a static pressure box formed by an overhead floor and the ground, then the cold air flows through the cabinet to carry out heat exchange, hot air is generated and discharged into the hot channels in the backs of two rows of cabinets, and the cold air returns to an air conditioning system through a return air inlet arranged above the hot channels. However, the application of this refrigeration method to ships has two problems: 1) because the raised floor needs to be laid, the machine room has higher floor height requirements, and the height of the superstructure of the ship can be raised, so that the overall performance of the ship is influenced; 2) the scale of the ship machine room is small, the machine cabinet is usually configured according to services, the probability of wrong running is high, and if the machine cabinet is uniformly designed into a cold pool form, the energy use efficiency (PUE) is difficult to achieve the optimum.
Disclosure of Invention
The technical problem that this application will be solved is the cold and hot inequality that brings, the radiating effect is poor of boats and ships IT rack tradition refrigeration mode air current organization to and there is the spatial layout when the ship end is suitable in the cold pond technique of land-use computer lab to require highly, and the not good problem of energy consumption performance is used to the small-scale.
In order to solve the technical problem, the technical scheme of this application provides a marine temperature self-adaptation forced air cooling rack, a serial communication port, including the rack, the rack is the modularization closed cabinet, including roof, bottom plate and confined preceding door plant, back door plant and curb plate, horizontal division is three region in the rack: the air supply area I is close to the rear door plate, the air return area III is close to the front door plate, and the equipment area II is positioned between the air supply area I and the air return area III; the air supply area I and the equipment area II are divided into two or more air supply subareas and equipment subareas according to the height, and the air supply subareas and the equipment subareas with the same height are set as independent heat dissipation units; the bottom plate at the position of the air supply area is provided with an air inlet, the outside of the air inlet is connected with an air supply loop of the air conditioner through flexible connection, the inside of the air inlet is connected to all air supply subareas through air supply pipes, and the air supply pipe of each air supply subarea is provided with an independent proportion regulating valve for supplying air to the air supply subarea; each equipment subarea is provided with an independent air check valve which is communicated to the air return area for air exhaust, and the position of the air check valve of each equipment subarea is also provided with an independent temperature sensor; the top plate of the position of the air return area is provided with an air outlet, and the air outlet is connected with a ship air conditioner air return pipeline through flexible connection.
Preferably, the device also comprises an automatic temperature control module; the direct control object of the automatic temperature control module is the proportional control valve used for adjusting the flow of cold air, and the feedback and final control object is the air temperature after heat exchange; setting and maintaining the temperature of each heat dissipation unit independently; the automatic temperature control module comprises a signal acquisition unit, a signal processing decision unit and an action execution unit, wherein the signal acquisition unit acquires signals, the signal acquisition is completed by temperature sensors distributed in each heat dissipation unit, the signal processing decision unit is a multi-loop PID temperature controller, the multi-loop PID temperature controller processes and logically controls original temperature signals of all the heat dissipation units, and the action execution unit is a proportional control valve and is used for executing an output command of the multi-loop PID temperature controller.
Preferably, a liquid crystal control panel is arranged outside the cabinet and used as a human-computer interaction interface to complete temperature partition setting, display and alarm of each radiating unit.
Preferably, the heat dissipation units with different heights are separated by partition plates, the partition plates are fixed on mounting beams in the cabinet, and the edges of the partition plates are coated with rubber pads to prevent air flow channeling between adjacent heat dissipation units.
Preferably, a diversion plate for division is arranged at the junction of the air supply sub-area and the equipment sub-area; the guide plate is provided with guide holes, the diameter of the guide hole in the middle of the guide plate is set to be the minimum, and the diameter of the guide hole from the middle to the two sides is gradually increased.
Preferably, a front panel for division is arranged at the junction of the equipment sub-area and the air return area, and the air check valve is arranged on the front panel.
Preferably, the front panel is hinged, one side of the front panel is provided with a hinge, and the other side of the front panel is fixed on the mounting beam through a hasp.
Preferably, a tray for placing the equipment is arranged in the equipment subarea, and guide rails are arranged on two sides of the tray to realize drawer type operation.
Preferably, the cavity of the air supply subarea is a static pressure box.
The application provides a three regional rack inner structure that a special design is constituteed by air supply district, equipment district and return air district, and this structure has guaranteed the certainty of air current flow direction on the whole, avoids cold and hot air current cross flow. The air supply area and the equipment area are further divided into a plurality of subareas on the vertical height, and the air supply subareas and the equipment subareas on the same height form a relatively independent heat dissipation unit; the public air return area collects hot air flow flowing out of the heat dissipation unit; the air flow stabilizing and distributing mechanism consists of an air supply area cavity, an air supply pipe, a proportion regulating valve and a guide plate, wherein the air supply area cavity forms a small static pressure box; the airflow outlet of the equipment area is provided with a non-return air valve for separating cold airflow and hot airflow, so that the airflow organization in the cabinet is clear, and the heat exchange efficiency is improved; the heat dissipation unit is combined with the multi-loop temperature control unit to form a temperature self-adaptive air cooling system with complete functions. The system can conveniently realize the zone control of the temperature and match the running condition of the equipment in each heat dissipation unit. According to the temperature set value and the actual temperature feedback value, the cold air conveying amount of the branch circuit is controlled according to the requirement, the fine refrigeration management in different areas is realized, and the energy consumption index of unit load is further reduced.
Drawings
FIG. 1 is a top return air/air configuration of a prior art central air conditioner;
FIG. 2 is a structural form of a unit type air conditioner in the prior art adopting direct air supply in front of a cabinet;
FIG. 3 is a prior art air flow organization diagram for a land data center room;
fig. 4 is a structural schematic diagram of a cabinet provided in the embodiment, wherein fig. 4-1 is a structural side view, fig. 4-2 is a structural front view, and fig. 4-3 is a structural top view;
FIG. 5 is a schematic view of a baffle configuration;
FIG. 6 is a logic block diagram of an automatic temperature control module;
FIG. 7 is a gas flow diagram of the cabinet provided in the example;
description of reference numerals: 1. an air outlet; 2. a temperature sensor; 3. a non-return air valve; 4. a tray; 5. a baffle; 6. an air supply pipe; 7. a proportional regulating valve; 8. a front panel; 9. a partition plate; 10. a liquid crystal control panel; 11. mounting a beam; 12. an air inlet; I. a blowing zone; II, a device area; III, a return air zone.
Detailed Description
In order to make the present application more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Examples
The embodiment provides a technical scheme of a temperature self-adaptive marine air cooling cabinet, which comprises two parts: the temperature control system comprises a modularized closed cabinet and an automatic temperature control module;
the modular closed cabinet is basically constructed as shown in fig. 4, and compared with a common network cabinet, the frame of the modular closed cabinet adopts a totally-enclosed structure, so that heat is dissipated in a closed loop, and heat exchange with the ambient environment is reduced (heat exchange with the ambient environment is basically avoided). The front door plate, the rear door plate and the two side plates of the cabinet are not provided with heat dissipation holes or grids, and the top plate is provided with an air outlet close to the front door plate and is connected with a ship air conditioner return air pipeline through flexible connection; the air inlet is arranged at the position of the bottom plate close to the rear door plate and is connected with an air supply loop of the air conditioner through flexible connection, and the air supply loop is laid on the top of the ceiling of the lower deck so as to reduce the requirement of the floor on height.
The interior of the machine cabinet is horizontally divided into three areas, namely an air supply area I, an equipment area II and an air return area III. The air supply area I and the equipment area II can be divided into a whole subarea, or can be divided into two or more air supply subareas and equipment subareas according to the height, and if the air supply subareas and the equipment subareas are divided into two or more subareas, the air supply subareas and the equipment subareas on the same height form a relatively independent heat dissipation unit; the return air area is shared by all the heat dissipation units.
The radiating units with different heights are separated by the partition plates 9, the partition plates 9 are fixed on the mounting beams 11, and the edges of the partition plates 9 are coated with rubber pads to prevent air flow channeling between the adjacent radiating units. A flow guide plate 5 is arranged at the junction of the air supply subarea and the equipment subarea (as shown in figure 5); the guide plate 5 is provided with guide holes, the aperture of the middle part is small, and the apertures of the guide plate are gradually increased towards the two sides, so that the distribution of the airflow field entering the equipment area is relatively uniform. The air supply sub-area is enclosed by a cabinet side plate, a rear door plate, a partition plate 9 and a guide plate 5, an air supply pipe 6 is arranged in the middle area of the rear part of the air supply sub-area, the air supply pipe 6 penetrates through the whole air supply area I and is connected with an air inlet 12, and a proportion regulating valve 7 is arranged on the air supply pipe 6 and used for controlling the cooling air volume; the air supply subarea also has the function of an air-conditioning static pressure box. The equipment subregion is enclosed by rack curb plate, guide plate 5, baffle 9 and front panel 8, and equipment district II and return air district III are cut apart to front panel 8, and the equipment subregion is used for laying network information equipment such as server, switch. A plurality of trays 4 for equipment installation are arranged in the equipment subarea, and guide rails are arranged on two sides of each tray 4, so that drawer type operation can be realized. The front panel 8 is of a hinge type, one side of the front panel is provided with a hinge, the other side of the front panel can be fixed on the mounting beam 11 through a hasp, and the tray 4 can be drawn out by opening the front panel 8; the upper part of the front panel 8 is provided with a non-return air valve 3, the non-return air valve 3 is communicated to the air return area III, and the air return valve 3 is arranged at an air flow outlet of the equipment subarea and can prevent the hot air flow of the non-return air area III from flowing backwards. And a temperature sensor 2 is arranged in the equipment subarea close to the air check valve 3 and used for measuring the temperature of the air flow at the air flow outlet after heat exchange.
The air return area III is formed by enclosing a cabinet front door plate, a side plate, a top plate, a bottom plate and a front panel 8, and hot air exhausted by each heat dissipation unit is collected through the air return valve 3. The top of the air return area III is connected with the air outlet 1.
The cabinet is provided with one multi-loop intelligent PID temperature controller which comprises input and output, logic operation and external interface functions. The front door panel of the cabinet is provided with a liquid crystal control panel 10.
The direct control object of the automatic temperature control module is the cold air flow, and the feedback and final control objects are the air temperature after heat exchange. The specific method comprises the following steps: on the basis of the physical separation of the design of the cabinet, the opening of the proportional control valve of the air supply subarea is controlled by monitoring the air temperature at the airflow outlet of the equipment subarea, and finally, the independent temperature setting and maintaining of each heat dissipation unit are realized.
The automatic temperature control module (logic block diagram is shown in fig. 6) is divided into three parts according to functions: the device comprises a signal acquisition unit, a signal processing decision unit and an action execution unit. The signal acquisition unit acquires signals which are completed by temperature sensors distributed in each equipment subarea, the multi-loop PID temperature controller realizes the processing and logic control functions of original temperature signals, the liquid crystal control panel is used as a human-computer interaction interface to complete the functions of temperature subarea setting, displaying, alarming and the like, and the proportional control valve executes the output command of the temperature controller. The automatic temperature control module supports serial port communication, and multiple cabinets can be networked in a daisy chain manner, so that the upper computer can conveniently implement remote unified monitoring and management.
The technical scheme provided by the embodiment is explained as follows:
cold air flow sent from the ship-end air conditioning system enters the cabinet air supply pipe through flexible connection, and the temperature controller calculates according to the refrigeration temperature set by each heat dissipation unit and the actual temperature at an outlet by a PID control method to obtain opening information of the proportional control valve and sends the opening information to the corresponding valve piece to perform corresponding action. The air flow is controlled by the valve and output and then accumulated in the air supply sub-area, which plays a part of functions similar to the static pressure box and is beneficial to the stable and uniform distribution of the air flow, but because the volume of the box body in the air supply area is limited and the air supply is concentrated at one point, a guide plate with the aperture gradually increased from the middle to two sides is specially designed, so that the air flow can form a uniform flow field in the equipment area after flowing through the guide plate, and the heat emitted from each part of the equipment can be quickly and efficiently taken away.
The temperature of the cold air flow is increased after the heat exchange with the equipment, the cold air flow flows to the front part of the equipment area, and pushes the non-return air valve to be opened and then flows into the return air area. Meanwhile, the temperature sensor collects an outlet temperature signal and transmits the outlet temperature signal back to the temperature controller, the temperature controller compares the temperature value with a set temperature value, the PID controller continuously outputs a control command to the proportional control valve to execute corresponding actions, and the whole control logic is closed-loop. Because the controlled system has great inertia, the temperature change needs a certain time, so the output refresh rate of the temperature controller does not need to be set too high, the control system is prevented from being in a working state all the time, and even the system is prevented from being unstable due to too frequent adjustment.
Because each heat dissipation unit is provided with the air check valve, airflow cannot flow backwards after entering the air return area and being collected, complete isolation between cold airflow and hot airflow is achieved, and airflow organization is quite clear (as shown in fig. 7); the hot air flows upwards to the air outlet and finally returns to the ship-end air conditioning system. The heat dissipation process of the whole cabinet is basically isolated from the outside, the system realizes closed operation, and the energy consumption index is further improved.
The beneficial effect of this application is as follows:
both open heat dissipation adopted by the ship network information cabinet and cold pool heat dissipation adopted by the land data center cabinet belong to external heat dissipation, namely, the cooling mode of the cabinet has larger heat interaction with the environment. The scheme is characterized in that a micro-circulation cooling system which is independently composed of cabinets and does not depend on the environment is constructed, and the cold and hot air flows run inside the cabinet body in the interface with the ship-end air conditioner, so that the loss of cold energy is reduced to the greatest extent and the energy consumption is reduced;
according to the large water flood irrigation type refrigeration mode of the traditional cabinet, the air flow is gradually heated from bottom to top, the distribution difference of the temperature field inside the cabinet is large, the heat accumulation condition possibly occurs in individual positions, and the fluctuation of the temperature of the cabinet along with the use condition of equipment is large due to the fact that the delivery quantity of cold air cannot be accurately adjusted. The design of independent heat dissipation unit is passed through to this scheme to and cooperation multiloop temperature control system, can realize the subregion control of temperature very conveniently, the heat dissipation demand of the different equipment of adaptation better, can cut off the air conditioning to the heat dissipation unit at shutdown device place and carry, realize the refrigeration management that becomes more meticulous, further reduced the energy consumption index of unit load.
According to the scheme, the independent air supply area is arranged in the cabinet and is also used as the static pressure box, and the specially designed guide plate is matched, so that cold air flow entering the equipment area can be uniformly distributed, each heating point of the equipment can be subjected to sufficient heat exchange, and the utilization rate of air flow cold quantity is improved; meanwhile, cold and hot air flows are separated through the non-return air valve at the outlet of the heat dissipation unit, so that the influence of air flow channeling on the heat dissipation effect of the equipment is prevented.
Because the air supply pipeline of rack lug connection air conditioner consequently compares cold pool heat dissipation, this scheme need not to set up the built on stilts in the aspect of arranging the installation, and this can bring the favourable factor in two aspects: i) the limit of the overall design of the ship on the layer height can be better met; ii) the heat exchange between the overhead layer and the surrounding environment is eliminated, and the cold loss caused by the arrangement of a large-area overhead layer is avoided.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111475049.9A CN114286586A (en) | 2021-12-06 | 2021-12-06 | Marine temperature self-adaptation forced air cooling rack |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111475049.9A CN114286586A (en) | 2021-12-06 | 2021-12-06 | Marine temperature self-adaptation forced air cooling rack |
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| CN202111475049.9A Pending CN114286586A (en) | 2021-12-06 | 2021-12-06 | Marine temperature self-adaptation forced air cooling rack |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116261315A (en) * | 2023-05-12 | 2023-06-13 | 合肥创科电子工程科技有限责任公司 | Cabinet temperature regulation control system |
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