CN113124207A - Automatic pressure relief valve and data disaster recovery storage device comprising same - Google Patents
Automatic pressure relief valve and data disaster recovery storage device comprising same Download PDFInfo
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- CN113124207A CN113124207A CN202110501987.5A CN202110501987A CN113124207A CN 113124207 A CN113124207 A CN 113124207A CN 202110501987 A CN202110501987 A CN 202110501987A CN 113124207 A CN113124207 A CN 113124207A
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- pressure relief
- pressure
- storage device
- automatic pressure
- relief valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0413—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/164—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side and remaining closed after return of the normal pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
- G11B33/1406—Reducing the influence of the temperature
- G11B33/1413—Reducing the influence of the temperature by fluid cooling
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an automatic pressure relief valve and a data disaster recovery storage device comprising the same. When the temperature gradually rises, the air pressure at one side of the pressure relief hole continuously rises along with the rise of the temperature, finally the elasticity of the elastic piece is overcome, a gap is formed between the moving piece and the valve body, the cooling liquid can be discharged in a high-temperature high-pressure steam state, and the temperature and the air pressure of the hollow cavity are reduced; when the air pressure is reduced to a certain value, the elastic element pushes the movable element back to the first position, and the pressure relief hole is closed again. The cooling liquid can fully absorb heat after the cooling liquid is completely leaked, and the heat resistance and durability of the data disaster recovery storage device are improved.
Description
Technical Field
The invention relates to the technical field of data storage, in particular to an automatic pressure relief valve and a data disaster recovery storage device comprising the same.
Background
At present, some devices in a vehicle, such as a vehicle data recorder, generally use a built-in hard disk or SD card to store vehicle data records. When an accident occurs, such as a fire accident, a crash accident, or a water drop, the data storage (such as a built-in hard disk or an SD card) is damaged due to poor protection, so that the driving data cannot be read, and the accident cause cannot be determined. Data disaster recovery storage devices for saving data storage have therefore emerged. The protection of impact and falling water is relatively mature, but the fire protection technology is not easy to realize on the premise of the limit of cost and volume. In the data disaster recovery storage device in the prior art, the utilization efficiency of cooling liquid is low, and the temperature in the device is difficult to accurately control.
Disclosure of Invention
The invention aims to overcome the defect of poor heat resistance and durability of a data disaster recovery storage device in the prior art, and provides an automatic pressure release valve and the data disaster recovery storage device comprising the same.
The invention solves the technical problems through the following technical scheme:
an automatic pressure relief valve for a data disaster recovery storage device, the automatic pressure relief valve comprising:
the first end of the valve body is provided with a pressure relief hole;
a movable member configured to be movable between a first position and a second position, the movable member closing the pressure relief aperture when the movable member is in the first position and opening the pressure relief aperture when the movable member is in the second position;
an elastic member for providing an elastic force to the movable member toward the first position.
In the scheme, the pressure relief hole can be communicated with the cooling liquid, and under the action of the elastic piece, the movable piece can be kept at the first position in a conventional state, so that the pressure relief hole is closed, and the cooling liquid cannot flow out of the pressure relief hole; when the temperature of the cooling liquid is gradually increased due to the introduction of external heat energy, the internal air pressure is increased and exceeds the standard atmospheric pressure due to the closing of the pressure relief hole, so that the boiling point of the cooling liquid is increased, the cooling liquid can absorb more heat, the air pressure at one side of the pressure relief hole is continuously increased along with the increase of the temperature, finally the elastic force of the elastic element is overcome, the movable element is pushed to the second position, a gap is formed between the movable element and the valve body, the cooling liquid can be discharged from the gap in a high-temperature and high-pressure steam state, and the temperature and the air pressure at one side of the pressure relief hole are reduced; when the air pressure is reduced to a certain value, the elastic element pushes the moving piece back to the first position, the pressure relief hole is closed again, and then the heat absorption and the pressure increase are continued on one side of the pressure relief hole until the moving piece is pushed away again, and high-temperature and high-pressure steam is discharged outwards. Repeating the above steps for several times until the cooling liquid is evaporated and leaked. Therefore, the automatic pressure relief valve can enable the cooling liquid to be discharged after the cooling liquid fully absorbs heat, the cooling liquid is fully utilized, and the heat resistance and durability of the disaster recovery storage device are improved.
Preferably, the moving part has an accommodating groove, an opening of the accommodating groove is far away from the pressure relief hole, a top block made of low-melting-point alloy is arranged in the accommodating groove, the automatic pressure relief valve further comprises a support, and the support is fixed relative to the valve body and extends into the accommodating groove to abut against the top block.
In this scheme, under normal condition, the kicking block cooperatees with the pillar for the moving part keeps in the first position. When the temperature around the automatic pressure release valve rises, the ejector pad made of low-melting-point alloy melts and no longer plays a supporting role for the moving part, at the moment, if the air pressure on one side of the pressure release hole is enough to overcome the elastic force of the elastic part, the moving part leaves the first position, and the cooling liquid on one side of the pressure release hole can be discharged in a high-temperature and high-pressure steam state, so that the effect of reducing the temperature is achieved, and the purpose of accurately releasing the pressure under the condition of constant temperature and constant pressure is achieved. If the temperature is reduced to be lower than the melting point of the low-melting-point alloy, the low-melting-point alloy is re-solidified into the top block in the accommodating groove and is matched with the support column, so that the moving part is kept at the first position, the leakage amount of the cooling liquid from the pressure release hole is reduced, and the cooling liquid can be discharged in a high-temperature and high-pressure steam mode after the cooling liquid fully absorbs heat. Preferably, the low melting point alloy has a melting point higher than the boiling point of the cooling liquid at normal atmospheric pressure. In certain embodiments, the low melting point alloy is a tin-bismuth-lead alloy or an indium-tin-bismuth alloy.
Preferably, the pillar has a tip, and the tip abuts against the top block.
In this scheme, when the assembly, need guarantee that the pillar supports and leans on the kicking block, just so can make between moving part and the valve body closely cooperate, prevent that the pressure release hole is sealed tight. Because the end of the pillar is a tip, the pillar is in contact with the top block and has plastic deformation and elastic deformation, stable rigid support is finally ensured, and meanwhile, the pillar is easy to assemble.
Preferably, the elastic member is a spring, one end of the spring is fixed relative to the pillar, and the other end of the spring abuts against the movable member.
In this scheme, the spring pressurized under the conventional state for the moving part receives the pressure towards the pressure release hole. As a preferred embodiment, the second end of the valve body is provided with a gland, the gland is fixed relative to the valve body, wherein the first end and the second end are opposite ends, one end of the spring abuts against the gland, and the other end abuts against the movable member. Preferably, the movable part is provided with an annular part extending towards the second end, the inner side of the annular part forms a containing groove, the spring is located on the outer side of the annular part, the annular part can play a role in guiding the spring, and meanwhile, the annular part separates the top block from the spring to prevent the melted low-melting-point alloy from influencing the operation of the spring.
Preferably, the valve body is provided with an inner cavity, the movable member is arranged in the inner cavity, and the pressure relief hole is communicated with the inner cavity.
In this scheme, the moving part is in comparatively confined inner chamber, and is isolated relatively with external world, is difficult to take place ageing and damage, and preferably, the elastic component also is arranged in the inner chamber, and the inner chamber also plays certain guard action to the elastic component. When the pressure is released, the high-temperature and high-pressure gas is discharged through the pressure release hole and the inner cavity in sequence. The inner cavity is communicated with the outside through the exhaust hole, so that the air pressure in the inner cavity is standard atmospheric pressure, the space of the inner cavity is far larger than a gap when the pressure is released by the pressure release hole, and high-pressure steam or high-temperature liquid leaked from one side of the pressure release hole can be further expanded in the inner cavity or vaporized, expanded and exhausted by the liquid.
Preferably, the inner cavity is filled with grease.
In the scheme, the lubricating grease can play a role in enhancing sealing in the inner cavity, so that volatilization of the cooling liquid in a conventional state is reduced; but also can prevent the metal components from rusting; and impurities can be prevented from entering the inner cavity and being stuck on the spring, so that the damping of the spring is prevented from being increased, and the accuracy of temperature control during eruption is prevented from being influenced. The material of the grease is preferably a high temperature resistant grease, such as a perfluoropolyether grease.
Preferably, a gland is fixedly arranged at the second end of the valve body, the gland is provided with an exhaust hole communicated with the inner cavity, and the first end and the second end are opposite.
In the scheme, the gland enables the inner cavity to be more closed, and parts in the inner cavity are further isolated from the outside; the high-temperature and high-pressure gas in the inner cavity can be exhausted through the exhaust hole on the gland.
Preferably, a sealing member is arranged between the movable member and the valve body, so that when the movable member is located at the first position, the movable member seals the pressure relief hole.
In this scheme, the sealing member has improved the leakproofness between moving part and the valve body, reduces the coolant liquid and just volatilize the possibility from pressure release hole department after insufficient heat absorption to the waste of coolant liquid has been reduced.
Preferably, the movable member has an annular protrusion protruding toward the first end, the annular protrusion is disposed around the pressure relief hole, and the sealing member includes a sealing ring disposed inside the annular protrusion.
In this scheme, the annular is protruding to surround the pressure release hole completely, prevents that the pressure release hole from taking place to leak, and the sealing member is by the pressfitting between moving part and valve body, realizes sealedly, and the annular is protruding to provide the support in the outside of sealing member, prevents that the sealing member from taking place deformation or dislocation outwards under the effect of inside and outside pressure differential.
The utility model provides a data disaster recovery is storage device, is including the inner bag that has well cavity, well cavity is equipped with the coolant liquid, the coolant liquid is around in data storage ware, the inner bag has the opening, the opening part is provided with as before automatic relief valve.
In the scheme, the automatic pressure release valve is applied to the data disaster backup storage device, the pressure release hole can be communicated with the cooling liquid, the pressure release valve can ensure that the inner container is in a sealing state under a conventional state, the cooling liquid in the hollow cavity cannot leak from the opening, when the data disaster backup storage device is in a heated state, the internal air pressure exceeds the standard atmospheric pressure due to the fact that the pressure release hole is closed, so that the boiling point of the cooling liquid is increased, the cooling liquid can absorb more heat, the air pressure on one side of the pressure release hole continuously rises along with the rise of the temperature, the elastic force of the elastic element is overcome finally, the movable element is pushed to the second position, a gap is formed between the movable element and the valve body, the cooling liquid can be discharged from the gap under a high-temperature high-pressure steam state, and the temperature and the air pressure on; when the air pressure is reduced to a certain value, the elastic element pushes the moving piece back to the first position, the pressure relief hole is closed again, and then the heat absorption and the pressure increase are continued on one side of the pressure relief hole until the moving piece is pushed away again, and high-temperature and high-pressure steam is discharged outwards. Repeating the above steps for several times until the cooling liquid is evaporated and leaked. Therefore, the automatic pressure relief valve can enable the cooling liquid to be discharged after the cooling liquid fully absorbs heat, the cooling liquid is fully utilized, and the heat resistance and durability of the disaster recovery storage device are improved. Preferably, the automatic pressure release valve is arranged at the top of the inner container, when cooling liquid steam leaks, the automatic pressure release valve can overflow downwards around the outer wall of the inner container, so that part of heat of the outer wall of the inner container can be taken away additionally while the cooling liquid is consumed, and the heat resistance and durability of the disaster recovery storage device are further improved. In a preferred embodiment, the coolant is water.
Preferably, a housing shell is arranged in the hollow cavity, at least part of the valve body is located in a containing cavity of the housing shell, so that the cooling liquid is isolated from the valve body, a gap is reserved between the valve body and the housing shell, a communication hole communicated with the containing cavity is formed in the housing shell, and the position of the communication hole is higher than the liquid level of the cooling liquid.
In this scheme, under conventional state, the coolant liquid is kept apart with the valve body, and the interval between valve body and the dustcoat casing forms a gas passage, and when the data disaster recovery storage device was heated, the steam that the coolant liquid evaporation produced got into the dustcoat casing through the intercommunicating pore, after above-mentioned gas passage, finally discharged from the pressure release hole, like this, the coolant liquid just communicates with the pressure release hole through a gas passage to prevent that the coolant liquid from direct and pressure release hole intercommunication, reduce and even avoid the coolant liquid directly to discharge from pressure release hole department with the form of liquid, guarantee that the coolant liquid can fully absorb heat. In addition, due to the arrangement, even if the data disaster recovery storage device is overturned and the communication hole is positioned below the liquid level of the cooling liquid, the high-pressure gas in the gas passage can apply certain pressure to the communication hole, so that the liquid is prevented from directly flowing into the housing shell to a certain extent.
Preferably, the hole diameter of the communication hole is not more than 0.5 mm.
In this scheme, the size of intercommunicating pore is less, can prevent effectively that the coolant liquid directly from flowing into in the dustcoat casing in the form of liquid.
Preferably, the data memory is located at the bottom of the inner container.
In this scheme, through above-mentioned setting, can reduce and the contact of high temperature steam, play the anticorrosion and guarantee data security's effect.
The positive progress effects of the invention are as follows: the automatic pressure release valve repeatedly sprays high-temperature high-pressure steam for multiple times under the action of the elastic element and the movable element until the cooling liquid is evaporated and completely leaks, the cooling liquid can be fully utilized, and meanwhile, the sealing performance of the pressure release hole under the non-high-temperature condition is ensured by utilizing the action of the top block and the support column made of low-melting-point alloy. According to the disaster recovery storage device, the automatic pressure relief valve is arranged, so that the cooling liquid can be discharged after fully absorbing heat, the cooling liquid is fully utilized, and the heat resistance and durability of the disaster recovery storage device are improved. By selecting the combination of the elastic pieces with different elastic coefficients and the low-melting-point alloy top blocks with different melting points, the more accurate temperature control protection function can be realized.
Drawings
Fig. 1 is a schematic structural diagram of a data disaster recovery storage device according to embodiment 1 of the present invention.
Fig. 2 is a schematic partial structure diagram of a data disaster recovery storage device according to embodiment 1 of the present invention.
Fig. 3 is a schematic partial structure diagram of a data disaster recovery storage device according to embodiment 2 of the present invention.
Fig. 4 is a schematic partial structure diagram of a data disaster recovery storage device according to embodiment 3 of the present invention.
Description of the reference numerals
Layer of insulating material 3
Mounting base 6
Automatic pressure relief valve 7
Sealing ring 77
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and fig. 2, an embodiment 1 of the present invention provides a data disaster recovery storage device, which includes an inner container 1 having a hollow cavity 11, wherein the hollow cavity 11 contains a cooling liquid, and the cooling liquid surrounds a data storage 2. Specifically, in this embodiment, the outer wall of the inner container 1 is recessed inward to form a groove for accommodating the data storage 2, that is, the wall of the groove is integrally connected with the wall of the inner container 1, and the above structure may be implemented by welding, sheet metal stamping, or flange mounting, which is not limited in this respect. With this configuration, the data storage 2 can be mounted outside the inner container 1 without affecting the protection of the data storage 2 by the coolant.
The inner container 1 has an opening 12, and the cooling liquid can be injected into the hollow cavity 11 of the inner container 1 through the opening 12. The outer side of the inner container 1 is coated with a thermal insulation material layer 3 to prevent the conduction of external heat to the data memory 2. Further, the exterior of the heat insulating material layer 3 is covered with a metal cover 4, and the bottom of the metal cover 4 is mounted on a mounting base 6 by a fixing bracket 5. In a preferred embodiment, the coolant is water.
An automatic pressure relief valve 7 is arranged at the opening 12. As shown in fig. 2, the automatic relief valve 7 includes a valve body 71, a movable member 72, and an elastic member 73, wherein a relief hole 711 is opened at a first end 10 of the valve body 71, the movable member 72 is movably configured to be movable between a first position and a second position, the relief hole 711 is closed by the movable member 72 when the movable member 72 is at the first position, the relief hole 711 is opened when the movable member 72 is at the second position, and the elastic member 73 is configured to provide elastic force to the movable member 72 toward the first position. The pressure relief hole 711 can be communicated with the coolant, and under the action of the elastic member 73, the movable member 72 can be kept at the first position in a normal state, so that the coolant cannot flow out of the pressure relief hole 711 in a closed state of the pressure relief hole 711; when the temperature of the cooling liquid gradually rises, the cooling liquid is vaporized continuously when boiling, and the pressure of the side of the pressure relief hole 711 (i.e., the pressure in the hollow cavity 11 of the inner container 1) exceeds the standard atmospheric pressure due to the closing of the pressure relief hole 711, so that the boiling point of the cooling liquid rises accordingly, and the cooling liquid can absorb more heat. If the temperature does not rise any more, the coolant stops boiling and vaporizing when the air pressure and the temperature reach equilibrium, and the air pressure on the side of the pressure relief hole 711 stops rising. If the air pressure at one side of the pressure relief hole 711 continuously rises along with the rise of the temperature, the movable member 72 is pushed to the second position by overcoming the elastic force of the elastic member 73 finally, a gap is formed between the movable member 72 and the valve body 71, the cooling liquid can be discharged from the gap in a high-temperature and high-pressure steam state, the temperature and the air pressure in the hollow cavity 11 are reduced, and the boiling point of the cooling liquid is also reduced; when the air pressure is reduced to a certain value, a new balance between the air pressure and the temperature is realized, the elastic element 73 pushes the movable element 72 back to the first position, the pressure relief hole 711 is closed again, and then the heat absorption and the pressure increase of one side of the pressure relief hole 711 are continued until the movable element 72 is pushed open again, and high-temperature and high-pressure steam is discharged outwards. Repeating the above steps for several times until the cooling liquid is evaporated and leaked. Therefore, the automatic pressure release valve 7 of the scheme can enable the cooling liquid to be discharged after fully absorbing heat, the cooling liquid is fully utilized, and the improvement of the heat resistance and durability of the disaster recovery storage device is facilitated. By controlling the elastic force of the elastic member 73, the opening pressure of the relief hole 711 can be precisely controlled. For example, in the case that the cooling liquid is water, the movable member 72 may be pushed open when the water in the inner container 1 is heated to 120 ℃ by controlling the properties of the elastic member 73.
The movable member 72 has an accommodating groove 721, an opening 12 of the accommodating groove 721 is far from the pressure relief hole 711, an ejector block 74 made of low melting point alloy is disposed in the accommodating groove 721, the automatic pressure relief valve 7 further includes a pillar 75, and the pillar 75 is fixed relative to the valve body 71 and extends into the accommodating groove 721 to abut against the ejector block 74.
Under normal conditions (i.e., when the disaster recovery storage device is not being heated by the outside world), top piece 74 engages post 75 to retain moveable member 72 in the first position. When the temperature around the automatic pressure release valve 7 rises, the top block 74 made of low-melting-point alloy melts and no longer supports the moving member 72, at this time, if the air pressure on one side of the pressure release hole 711 is enough to overcome the elastic force of the elastic member 73, the moving member 72 leaves the first position, and the cooling liquid on one side of the pressure release hole 711 can be discharged in a high-temperature and high-pressure steam state, so that the effect of reducing the temperature is achieved, and the purpose of accurately releasing the pressure under the condition of constant temperature and constant pressure is achieved. If the temperature is lowered to below the melting point of the low-melting-point alloy, the low-melting-point alloy is re-solidified into the top block 74 in the accommodating groove 721 and is engaged with the pillar 75, so that the movable member 72 is maintained at the first position, thereby reducing the amount of the coolant leaking from the pressure-releasing hole 711 and ensuring that the coolant can be discharged in the form of high-temperature and high-pressure steam after sufficiently absorbing heat. Preferably, the low melting point alloy has a melting point higher than the boiling point of the cooling liquid at normal atmospheric pressure. In certain embodiments, the low melting point alloy is a tin-bismuth-lead alloy or an indium-tin-bismuth alloy. For example, in the case where the coolant is water, the top block 74 may be made of a low melting point alloy having a melting point of 120 ℃ by controlling the properties of the elastic member 73 so that the difference between the internal pressure and the external pressure of the inner container 1 is sufficient to overcome the elastic force of the elastic member 73 when the water in the inner container 1 is heated to 120 ℃.
It will be appreciated that in some embodiments, a low melting point alloy slightly higher than 120 ℃ may be selected, for example, the melting point is 120-130 ℃, and specifically, 123 ℃, 125 ℃, 128 ℃ and so on, in which case, even when 120 ℃ is reached, the pressure difference between the inside and the outside of the liner 1 is sufficient to overcome the elastic force, but since the top block 74 is not yet melted, the movable member 72 will not leave the first position, and the pressure relief hole 711 will not be opened until the temperature is further raised to the melting point and the top block 74 is melted.
The post 75 has a pointed end 751, the pointed end 751 abutting against the top block 74. During assembly, it is necessary to ensure that the pillar 75 abuts against the top block 74, so that the movable member 72 and the valve body 71 are tightly fitted to prevent the pressure relief hole 711 from being sealed. Since the tip 751 of the stay 75 can be partially inserted into the top block 74, the complete abutment of the stay 75 with the top block 74 is ensured. Otherwise, if the end of the stay 75 is a flat surface, the stay 75 is not easily inserted into the top block 74 when abutting against the top block 74, and the assembly may not be performed.
The elastic member 73 is preferably a spring having one end fixed to the pillar 75 and the other end abutting against the movable member 72. The spring is normally compressed so that the mover 72 receives a pressure toward the relief hole 711. In a preferred embodiment, the second end 20 of the valve body 71 is provided with a gland 76, and the gland 76 is fixed relative to the valve body 71, wherein the first end 10 and the second end 20 are opposite ends, and one end of the spring abuts against the gland 76 and the other end abuts against the movable member 72. Preferably, the movable element 72 has an annular portion 722 extending toward the second end 20, the inner side of the annular portion 722 forms the receiving slot 721, the spring is located on the outer side of the annular portion 722, the annular portion 722 can guide the spring, and at the same time, the annular portion 722 separates the top block 74 from the spring to prevent the melted low-melting-point alloy from affecting the operation of the spring.
The elastic force of the spring has a certain linear relation with the deformation, and once the pressure of the inner container 1 rises, the spring is deformed correspondingly, so that the coolant is easy to leak in advance. Through setting up the kicking block 74 of being made by the low melting point alloy, can guarantee when the temperature does not reach safe threshold value, even the pressure of inner bag 1 is higher, also can't promote the spring and take place to warp to before guaranteeing that the temperature does not reach safe threshold value, no matter how the inner bag 1 atmospheric pressure changes, can not cause the leakage in advance of coolant liquid because of the deformation of spring, therefore the automatic relief valve of this embodiment can realize the accurate control of pressure release temperature.
The valve body 71 has an inner cavity 30, the movable member 72 is disposed in the inner cavity 30, and the relief hole 711 communicates with the inner cavity 30. The movable member 72 is located in the relatively closed cavity 30 and is relatively isolated from the outside, and is not prone to aging or damage, and preferably, the elastic member 73 is also located in the cavity 30, and the cavity 30 also plays a certain role in protecting the elastic member 73. When the pressure is released, the high-temperature and high-pressure gas is discharged through the pressure release hole 711 and the inner cavity 30 in sequence.
The inner cavity 30 is filled with grease. The lubricating grease can play a role in enhancing sealing in the inner cavity 30, so that volatilization of the cooling liquid in a conventional state is reduced; but also prevent the aging of parts, such as the rusting of metal components and the oxidation of rubber components; and impurities can be prevented from entering the inner cavity 30 and being stuck on the spring, so that the phenomenon that the damping of the spring is increased and the accuracy of temperature control during eruption is influenced is avoided. The material of the grease is preferably a high temperature grease, such as a perfluoropolyether grease, which is commercially available.
The second end 20 of the valve body 71 is fixedly provided with a gland 76, the gland 76 is provided with an exhaust hole 761 communicated with the inner cavity 30, and the first end 10 and the second end 20 are opposite. The gland 76 makes the inner cavity 30 more closed, further isolating the parts in the inner cavity 30 from the outside; the high temperature and high pressure gas in the inner cavity 30 can be exhausted through the exhaust holes 761 of the gland 76. The strut 75 may be secured to the gland 76.
A seal is provided between hinge 72 and valve body 71 so that hinge 72 seals relief hole 711 when hinge 72 is in the first position. The sealing member improves the sealing property between the movable member 72 and the valve body 71, and reduces the possibility that the coolant volatilizes from the relief hole 711 without absorbing heat sufficiently, thereby reducing the waste of the coolant.
By applying the automatic pressure release valve 7 on the data disaster recovery storage device, the pressure release hole 711 can be communicated with the cooling liquid, in a conventional state, the automatic pressure release valve 7 can ensure that the liner 1 is in a sealed state, the cooling liquid in the hollow cavity 11 cannot leak from the opening 12, when the data disaster recovery storage device is in a heated state, the internal air pressure exceeds the standard atmospheric pressure due to the fact that the pressure release hole 711 is closed, so that the boiling point of the cooling liquid is increased, the cooling liquid can absorb more heat, the air pressure on one side of the pressure release hole 711 continuously rises along with the rise of the temperature, finally the elastic force of the elastic member 73 is overcome, the movable member 72 is pushed to the second position, a gap is formed between the movable member 72 and the valve body 71, the cooling liquid can be discharged from the gap in a high-temperature high-pressure steam state, and the temperature and the air pressure on one side; when the air pressure is reduced to a certain value, the elastic element 73 pushes the movable element 72 back to the first position, the pressure relief hole 711 is closed again, and then the heat absorption and the pressure increase are continued on one side of the pressure relief hole 711 until the movable element 72 is pushed open again, and high-temperature and high-pressure steam is discharged outwards. Repeating the above steps for several times until the cooling liquid is evaporated and leaked. Therefore, the automatic pressure relief valve 7 of the embodiment enables the cooling liquid to be discharged after fully absorbing heat, the cooling liquid is fully utilized, and the improvement of the heat resistance and durability of the disaster recovery storage device is facilitated. Preferably, the automatic pressure release valve 7 is arranged at the top of the inner container 1, and when the cooling liquid steam leaks, the cooling liquid steam can overflow downwards around the outer wall of the inner container 1 (namely, flows in a gap between the inner container 1 and the heat insulation material layer 3), so that the cooling liquid can be consumed, and a part of heat can be taken away additionally, and the heat resistance and durability of the disaster recovery storage device can be further improved.
Be provided with the dustcoat casing 8 in the well cavity 11, valve body 71 is at least partly located the chamber that holds of dustcoat casing 8 to make coolant liquid and valve body 71 keep apart, and there is the interval between valve body 71 and the dustcoat casing 8, dustcoat casing 8 offer with hold the intercommunicating pore 81 that the chamber communicates, the position of intercommunicating pore 81 is higher than the liquid level of coolant liquid.
In a conventional state, the cooling liquid is isolated from the valve body 71, an air passage is formed between the valve body 71 and the outer cover shell 8, when the data disaster recovery storage device is heated, steam generated by evaporation of the cooling liquid enters the outer cover shell 8 through the communication hole 81, and is finally discharged from the pressure release hole 711 after passing through the air passage, so that the cooling liquid is communicated with the pressure release hole 711 through one air passage, the direct communication between the cooling liquid and the pressure release hole 711 is prevented, the direct discharge of the cooling liquid from the pressure release hole 711 in a liquid form is reduced or even avoided, and the cooling liquid can fully absorb heat. Furthermore, with this arrangement, even if the data disaster recovery storage device is turned over and the communication hole 81 is located below the liquid level of the coolant, the high-pressure gas in the gas passage can apply a certain pressure to the communication hole 81, thereby preventing the liquid from rapidly flowing into the housing case 8 to some extent.
The communication hole 81 is small in size, and can effectively prevent the coolant from directly flowing into the housing case 8 in a liquid form. Preferably, the hole diameter of the communication hole 81 is not more than 0.5 mm.
Example 2
As shown in fig. 3, which is an embodiment 2 of the present invention, the automatic pressure relief valve provided in this embodiment is substantially the same as the automatic pressure relief valve provided in embodiment 1, except that in this embodiment, a plunger 723 protruding toward a pressure relief hole 711 is provided on a movable member 72, and the plunger 723 cooperates with the pressure relief hole 711 to improve the sealing performance of the pressure relief hole 711. When the plunger 723 is removed from the pressure relief hole 711 due to the pressure difference, the pressure relief hole 711 is opened, and high-temperature and high-pressure steam can be discharged through the pressure relief hole 711. In this embodiment, the pressure relief hole 711 is completely filled with the plunger 723, thereby ensuring that the pressure relief hole 711 is sealed.
Example 3
As shown in fig. 4, which is an embodiment 3 of the present invention, the automatic pressure relief valve provided in this embodiment is substantially the same as the automatic pressure relief valve of embodiment 2, except that in this embodiment, the length of the plunger 723 is shorter, and when the movable element 72 is at the first position, only a part of the pressure relief hole 711 is filled by the plunger 723, so that the movable element 72 is lifted up by a short distance, so that the pressure relief hole 711 can discharge high-temperature and high-pressure steam. In addition, the end of the plunger 723 is provided with a lead angle, so that when the movable element 72 moves from the second position to the first position, the plunger 723 can easily enter the pressure relief hole 711, and the plunger 723 is prevented from being clamped outside the pressure relief hole 711 and being incapable of realizing sealing.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (13)
1. An automatic pressure relief valve for a data disaster recovery storage device, the automatic pressure relief valve comprising:
the first end of the valve body is provided with a pressure relief hole;
a movable member configured to be movable between a first position and a second position, the movable member closing the pressure relief aperture when the movable member is in the first position and opening the pressure relief aperture when the movable member is in the second position;
an elastic member for providing an elastic force to the movable member toward the first position.
2. The automatic pressure relief valve of claim 1 wherein the movable member has a receiving groove, an opening of the receiving groove is away from the pressure relief hole, a top block made of a low melting point alloy is disposed in the receiving groove, the automatic pressure relief valve further comprises a support post, the support post is fixed relative to the valve body, and the support post extends into the receiving groove to abut against the top block.
3. The automatic pressure relief valve of claim 2 wherein the post has a tip that abuts the top block.
4. The automatic pressure relief valve of claim 2 wherein the resilient member is a spring having one end fixed relative to the post and the other end abutting the movable member.
5. The automatic pressure relief valve of claim 1 wherein said valve body has an interior chamber, said movable member being disposed in said interior chamber, said pressure relief orifice being in communication with said interior chamber.
6. The automatic pressure relief valve of claim 5 wherein the internal chamber is filled with grease.
7. The automatic pressure relief valve according to claim 5 or 6, characterized in that a gland is fixedly arranged at the second end of the valve body, the gland is provided with an exhaust hole communicated with the inner cavity, and the first end and the second end are opposite ends.
8. The automatic pressure relief valve according to any one of claims 1 to 6 wherein a seal is provided between the moveable member and the valve body such that the moveable member seals the pressure relief orifice when the moveable member is in the first position.
9. The automatic pressure relief valve of claim 8 wherein the movable member has an annular projection projecting toward the first end, the annular projection being disposed about the pressure relief orifice, and the sealing member comprises a sealing ring disposed inside the annular projection.
10. A data disaster recovery storage device comprising a liner having a hollow chamber, wherein the hollow chamber contains a cooling fluid, the cooling fluid surrounds a data storage device, the liner has an opening, and the opening is provided with an automatic pressure relief valve according to any one of claims 1 to 9.
11. The data disaster recovery storage device according to claim 10, wherein a housing casing is disposed in the hollow chamber, the valve body is at least partially located in a receiving chamber of the housing casing, so that the cooling fluid is isolated from the valve body, a space is provided between the valve body and the housing casing, the housing casing is provided with a communication hole communicating with the receiving chamber, and the communication hole is higher than a liquid level of the cooling fluid.
12. The data disaster recovery storage device as set forth in claim 11 wherein the hole diameter of said communication hole is not more than 0.5 mm.
13. The data disaster recovery storage device as in any one of claims 10-12 wherein said data storage is located at the bottom of said inner container.
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| CN202110501987.5A CN113124207B (en) | 2021-05-08 | 2021-05-08 | Automatic pressure relief valve and data disaster recovery storage device comprising same |
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| CN202110501987.5A CN113124207B (en) | 2021-05-08 | 2021-05-08 | Automatic pressure relief valve and data disaster recovery storage device comprising same |
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| CN113124207B CN113124207B (en) | 2022-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220223178A1 (en) * | 2019-06-11 | 2022-07-14 | Shanghai Sanly Digital Technology Co., Ltd. | Data disaster recovery storage device and carrier |
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| CN113124207B (en) | 2022-08-09 |
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