Ventilation filtering system

Abstract

The utility model relates to a ventilation filtering system. Comprising a storage assembly used for storing compressed air; the air inlet end of the valve assembly communicates with the storage assembly, and the valve assembly is used for outputting the compressed air stored in the storage assembly from the air outlet end of the valve assembly when the valve is opened; the gas inlet end of the filtering assembly is used for being communicated with a to-be-ventilated area, and the filtering assembly is used for filtering gas flowing through the filtering assembly; the air inlet end of the air ejector communicates with the air outlet end of the valve assembly and the air outlet end of the filtering assembly. The utility model provides a passive ventilation filtering system which can work under the condition of no power supply, and is higher in reliability and low in cost.

Description

Technical Field

[0001] The present application relates to the field of ventilation technology, and in particular to a ventilation and filtering system. Background Art

[0002] With the development of science and technology, the application of nuclear power technology is becoming more and more extensive. In order to ensure the safety of nuclear power plants, it is necessary to install ventilation and filtration systems in nuclear power plants. During the operation of nuclear power plants, ventilation and filtration systems are put into operation to maintain a certain negative pressure in the radioactive control area of ​​the nuclear power plant relative to the outdoor environment, collect and filter radioactive gases in the area, so as to limit the release of airborne radioactivity to the environment, ensure the safety of nuclear power plants and avoid leakage and pollution of the environment.

[0003] In conventional ventilation and filtration systems, fans are used to provide the pressure required to transport gas through the filtration system.

[0004] However, if there is an unexpected situation such as power outage, the fan will run. Therefore, in order to ensure the stable operation of the fan, emergency power supply measures need to be designed, such as equipping the fan with a nuclear safety-grade emergency diesel engine. Therefore, the equipment procurement and operation and maintenance costs are high. Utility Model Content

[0005] Based on this, it is necessary to provide a ventilation and filtration system that can work normally without external power supply to address the above technical problems.

[0006] The present application provides a ventilation and filtration system, comprising: a storage component for storing compressed air; a valve component, wherein the air inlet end of the valve component is connected to the storage component, and the valve component is used to output the compressed air stored in the storage component from the air outlet end of the valve component when the valve is opened; a filter component, wherein the air inlet end of the filter component is used to be connected to an area to be ventilated, and the filter component is used to filter the gas flowing through the filter component; and an air injector, wherein the air inlet end of the air injector is respectively connected to the air outlet end of the valve component and the air outlet end of the filter component.

[0007] In one embodiment, the storage component includes:

[0008] at least one compressed air tank, the compressed air tank being used to store compressed air;

[0009] At least one first isolation valve, each of the first isolation valves is arranged corresponding to a compressed air tank, a first end of the first isolation valve is communicated with the corresponding compressed air tank, and a second end of the first isolation valve is communicated with the valve assembly.

[0010] In one embodiment, the storage component also includes: an air intake valve, the air intake end of the air intake valve is connected to an external air compression system, and the air outlet end of the air intake valve is connected to the second end of each of the first isolation valves, wherein when the air intake valve and the first isolation valve are opened, the external air compression system delivers compressed air to the compressed air tank.

[0011] In one embodiment, the valve assembly includes: at least one valve branch, wherein the valve branch includes: a pressure regulating valve, the air inlet end of the pressure regulating valve is connected to the storage assembly, and the pressure regulating valve is used to regulate the pressure of the gas flowing through the pressure regulating valve; at least one second isolation valve, the air inlet end of the second isolation valve is connected to the air outlet end of the pressure regulating valve, and the air outlet end of the second isolation valve is connected to the air inlet end of the air injector.

[0012] In one embodiment, a valve branch includes: two second isolation valves, the air inlet ends of the two second isolation valves are respectively connected to the air outlet ends of the pressure regulating valve, and the air outlet ends of the two second isolation valves are respectively connected to the air inlet end of the air injector.

[0013] In one embodiment, the second isolation valve is one of an electrically controlled isolation valve and a mechanically controlled isolation valve.

[0014] In one embodiment, the filter assembly comprises:

[0015] An exhaust pipe network, the exhaust pipe network is used to communicate with the area to be ventilated;

[0016] At least one filter, the air inlet end of the filter is connected to the exhaust pipe network, and the air outlet end of the filter is connected to the air inlet end of the air injector.

[0017] In one embodiment, the at least one filter comprises:

[0018] A particle air filter, wherein the air inlet end of the particle air filter is connected to the exhaust pipe network;

[0019] An iodine adsorber, wherein an air inlet end of the iodine adsorber is communicated with an air outlet end of the particulate air filter, and an air outlet end of the iodine adsorber is communicated with an air inlet end of the air injector.

[0020] In one embodiment, the at least one filter further comprises:

[0021] A pre-air filter, wherein the air inlet end of the pre-air filter is connected to the exhaust pipe network, and the air outlet end of the pre-air filter is connected to the air inlet end of the particle air filter;

[0022] A post-air filter, wherein the air inlet end of the post-air filter is communicated with the air outlet end of the iodine adsorber, and the air outlet end of the post-air filter is communicated with the air inlet end of the air injector.

[0023] In one embodiment, the filter assembly further comprises:

[0024] A heater is arranged at the air inlet end of the filter assembly and is used to adjust the humidity of the gas entering the air inlet end of the filter assembly.

[0025] The above-mentioned ventilation and filtration system. By setting up a storage component, compressed air can be stored. By setting up a valve component, it is possible to control whether the compressed air stored in the storage component can be output and to achieve pressure regulation of the compressed air. By setting up a filter component, it is possible to filter the gas, and by setting up an air ejector, the gas after filtering can be discharged to achieve the exhaust effect. In the present application, due to the design of the storage component and the valve component, the pressure of the compressed air can be adjusted by the valve component, so that a negative pressure environment is formed at the air inlet end of the air ejector, and then the air in the area to be ventilated can be directed to the air inlet end of the filter component, and then reach the air inlet end of the air ejector through the filter component, so as to discharge the filtered gas. Therefore, there is no need to use a fan, and the effect of conveying gas can be achieved by forming a negative pressure environment at the air inlet end of the air ejector, thereby providing a passive ventilation and filtration system that can work without power supply, has higher reliability, and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of a ventilation and filtration system in one embodiment;

[0028] Figure 2 This is a second structural schematic diagram of a ventilation and filtration system in an embodiment;

[0029] Figure 3 This is a third structural diagram of a ventilation and filtration system in an embodiment;

[0030] Figure 4 This is a fourth structural diagram of a ventilation and filtration system in one embodiment;

[0031] Figure 5This is a fifth structural diagram of a ventilation and filtration system in one embodiment;

[0032] Figure 6 This is a sixth structural diagram of a ventilation and filtration system in one embodiment;

[0033] Figure 7 This is a seventh structural diagram of a ventilation and filtration system in one embodiment;

[0034] Figure 8 This is an eighth structural diagram of a ventilation and filtration system in one embodiment;

[0035] Fig. 9 This is a ninth structural diagram of a ventilation and filtration system in one embodiment;

[0036] Fig.10 This is the tenth structural diagram of a ventilation and filtration system in one embodiment.

[0037] Description of reference numerals:

[0038] 10-storage assembly, 20-valve assembly, 30-filter assembly, 40-air injector, 11-compressed air tank, 12-first isolation valve, 13-intake valve, 50-air compression system, 21-pressure regulating valve, 22-second isolation valve, 31-exhaust pipe network, 32-filter, 33-particle air filter, 34-iodine adsorber, 35-pre-air filter, 36-post-air filter, 37-heater. DETAILED DESCRIPTION

[0039] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0042] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatially relative terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0043] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. In addition, the "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is transmission of electrical signals or data between the connected objects.

[0044] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0045] In one embodiment, Figure 1 As shown, a ventilation and filtering system is provided, comprising: a storage component 10, a valve component 20, a filter component 30, and an air ejector 40, wherein:

[0046] The storage assembly 10 is used to store compressed air.

[0047] The storage component 10 may include a compressed air tank 11 , in which compressed air is stored, and the compressed air serves as a power source for the ventilation and filtration system of the present application.

[0048] The air inlet end of the valve assembly 20 is connected to the storage assembly 10. The valve assembly 20 is used to adjust the compressed air stored in the storage assembly 10 to a preset pressure when the valve is opened, and then output the compressed air stored in the storage assembly 10 from the air outlet end of the valve assembly 20.

[0049] The valve assembly 20 can control the compressed air stored in the storage assembly 10 to be output by opening and closing the valve. The valve assembly 20 can adjust the parameters such as the pressure and flow rate of the output compressed air, so as to adjust the output compressed air according to the actual situation and needs, and ensure that a negative pressure environment that meets the standards can be formed.

[0050] The air inlet end of the filter assembly 30 is used to communicate with the area to be ventilated, and the filter assembly 30 is used to filter the gas flowing through the filter assembly 30.

[0051] Among them, the filter component 30 is a component that can filter gas, including but not limited to filtering dust, toxic and harmful particles, iodine, and other pollutants in control, to ensure that the gas processed by the filter component 30 is discharged into the atmosphere without polluting the atmosphere.

[0052] The air inlet end of the air injector 40 is communicated with the air outlet end of the valve assembly 20 and the air outlet end of the filter assembly 30 respectively.

[0053] The air injector 40 is a device capable of injecting gas to achieve the exhaust function.

[0054] Among them, the pressure of compressed air is adjusted through the valve assembly 20, so that a negative pressure environment is formed at the air inlet end of the air injector 40, and then the air in the area to be ventilated can be directed to the air inlet end of the filter assembly 30, and reaches the air inlet end of the air injector 40 through the filter assembly 30, so as to discharge the filtered gas. The pressure of the compressed air stored in the compressed air tank 11 can be used as the operating driving force of the ventilation and filtration system of the present application, so there is no need to set up a fan, and there is no need to connect an additional power supply to power the fan.

[0055] In this embodiment, by setting up a storage component 10, compressed air can be stored. By setting up a valve component 20, it is possible to control whether the compressed air stored in the storage component 10 can be output and to achieve pressure regulation of the compressed air. By setting up a filter component 30, it is possible to filter the gas, and by setting up an air ejector 40, the gas after filtering can be discharged to achieve the exhaust effect. In the present application, since the storage component 10 and the valve component 20 are designed, the pressure of the compressed air can be adjusted by the valve component 20, so that a negative pressure environment is formed at the air inlet end of the air ejector 40, and then the air in the area to be ventilated can be diverted to the air inlet end of the filter component 30, and reaches the air inlet end of the air ejector 40 through the filter component 30, so as to discharge the filtered gas. Therefore, there is no need to use a fan, and the effect of conveying gas can be achieved by forming a negative pressure environment at the air inlet end of the air ejector 40, thereby providing a non-active ventilation and filtration system with higher reliability and low cost.

[0056] In one embodiment, Figure 2 As shown, the storage assembly 10 comprises: at least one compressed air tank 11, at least one first isolation valve 12, wherein:

[0057] The compressed air tank 11 is used to store compressed air.

[0058] Each first isolation valve 12 is disposed corresponding to a compressed air tank 11 , a first end of the first isolation valve 12 is communicated with the corresponding compressed air tank 11 , and a second end of the first isolation valve 12 is communicated with the valve assembly 20 .

[0059] In this embodiment, compressed air can be stored by providing the compressed air tank 11. The compressed air in the compressed air tank 11 can be released to the outside by providing the first isolation valve 12.

[0060] In one embodiment, Figure 3 As shown, the storage assembly 10 further includes an air intake valve 13 . The air intake end of the air intake valve 13 is communicated with the external air compression system 50 , and the air outlet end of the air intake valve 13 is communicated with the second end of each first isolation valve 12 .

[0061] When the air intake valve 13 and the first isolation valve 12 are opened, the external air compression system 50 delivers compressed air to the compressed air tank 11 .

[0062] The external air compression system 50 can provide compressed air, and its specific structure is not limited, as long as it can provide compressed air.

[0063] In this embodiment, the air inlet valve 13 is designed to connect the external air compression system 50 and the second end of each first isolation valve 12 , so that the external air compression system 50 can be used to supplement the compressed air in the compressed air tank 11 .

[0064] In one embodiment, Figure 4 As shown, the valve assembly 20 includes: at least one valve branch, wherein the valve branch includes: a pressure regulating valve 21, at least one second isolation valve 22, wherein:

[0065] The air inlet end of the pressure regulating valve 21 is communicated with the storage assembly 10 , and the pressure regulating valve 21 is used to regulate the pressure of the gas flowing through the pressure regulating valve 21 .

[0066] The pressure regulating valve 21 can adjust the pressure and flow rate of the compressed air passing through by controlling its own valve opening, thereby maintaining the pressure of the compressed air within a required range and forming a negative pressure environment at the air inlet end of the air ejector 40 .

[0067] The air inlet end of the second isolation valve 22 is communicated with the air outlet end of the pressure regulating valve 21 , and the air outlet end of the second isolation valve 22 is communicated with the air inlet end of the air injector 40 .

[0068] By designing the second isolation valve 22 , it is possible to control whether the compressed air output by the valve assembly 20 can be provided to the air inlet end of the air injector 40 .

[0069] In this embodiment, the pressure of the compressed air is regulated and whether the compressed air can be released can be controlled by designing the pressure regulating valve 21 and the second isolation valve 22. Multiple valve branches can be designed, so that even if a valve branch fails, the compressed air can be regulated and released through other valve branches through redundant settings, thereby improving the reliability of the entire system.

[0070] In one embodiment, Figure 5 As shown, a valve branch includes: two second isolation valves 22, the air inlet ends of the two second isolation valves 22 are respectively connected to the air outlet ends of the pressure regulating valve 21, and the air outlet ends of the two second isolation valves 22 are respectively connected to the air inlet end of the air injector 40.

[0071] The second isolation valve 22 is one of an electrically controlled isolation valve and a mechanically controlled isolation valve. The second isolation valve 22 can be electrically controlled to control whether it is open, or it can be mechanically controlled to control whether it is open, thereby improving safety.

[0072] In this embodiment, a valve branch may be designed to include two second isolation valves 22, thereby decomposing the valve branch into two sub-branches, further realizing a redundant setting and improving the reliability of the entire system.

[0073] In one embodiment, Figure 6 As shown, the filter assembly 30 includes: an exhaust pipe network 31, at least one filter 32, wherein:

[0074] The exhaust pipe network 31 is used to communicate with the area to be ventilated.

[0075] The exhaust pipe network 31 is arranged in the area to be ventilated, such as a room to be ventilated, so that the gas in the area to be ventilated can be sucked in.

[0076] The air inlet end of the filter 32 is communicated with the exhaust pipe network 31 , and the air outlet end of the filter 32 is communicated with the air inlet end of the air injector 40 .

[0077] The gas entering from the exhaust pipe network 31 will pass through the filter 32 and then reach the air inlet end of the air injector 40. During this process, the filter 32 can filter the gas.

[0078] In this embodiment, the filter assembly 30 is designed to include a filter 32, thereby achieving a gas filtering effect.

[0079] In one embodiment, Figure 7 As shown, at least one filter 32 includes: a particle air filter 33, an iodine adsorber 34, wherein:

[0080] The air inlet end of the particulate air filter 33 is communicated with the exhaust pipe network 31 .

[0081] The particle air filter 33 may be a FIA filter 32 or a HEPA (High Efficiency Particulate Air Filter) filter 32, which can filter pollutants such as aerosols.

[0082] The air inlet end of the iodine adsorber 34 is communicated with the air outlet end of the particulate air filter 33 , and the air outlet end of the iodine adsorber 34 is communicated with the air inlet end of the air injector 40 .

[0083] The iodine adsorber 34 can adsorb iodine in the gas.

[0084] In this embodiment, the gas filtering is achieved by designing the particle air filter 33 and the iodine adsorber 34 .

[0085] In one embodiment, Figure 8 As shown, at least one filter 32 further includes: a front air filter 35 and a rear air filter 36, wherein:

[0086] The air inlet end of the pre-air filter 35 is communicated with the exhaust pipe network 31 , and the air outlet end of the pre-air filter 35 is communicated with the air inlet end of the particle air filter 33 .

[0087] The pre-air filter 35 may be a FIF filter 32, which may filter pollutants such as dust.

[0088] The air inlet end of the post-air filter 36 is communicated with the air outlet end of the iodine adsorber 34 , and the air outlet end of the post-air filter 36 is communicated with the air inlet end of the air injector 40 .

[0089] The post-air filter 36 may be a FIF filter 32, which may filter activated carbon or the like.

[0090] In this embodiment, by providing the front air filter 35 and the rear air filter 36, more sufficient filtering can be achieved.

[0091] In one embodiment, Fig. 9As shown, the filter assembly 30 further includes a heater 37 . The heater 37 is disposed at the air inlet end of the filter assembly 30 and is used to adjust the humidity of the gas entering the air inlet end of the filter assembly 30 .

[0092] In this embodiment, by providing a heater 37 , the humidity of the gas entering the air inlet end of the filter assembly 30 can be adjusted so that the relative humidity of the gas meets the requirement, thereby ensuring the adsorption efficiency of the iodine adsorber 34 .

[0093] In one embodiment, Fig.10 As shown, a structural schematic diagram of a ventilation and filtration system is provided, wherein the various parts thereof have been mentioned in the above embodiments and will not be described in detail.

[0094] In the description of this specification, the descriptions with reference to the terms "some embodiments", "other embodiments", "ideal embodiments", etc., mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

[0095] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0096] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A ventilation and filtration system, characterized in that: include: A storage assembly for storing compressed air; A valve assembly, wherein the air inlet end of the valve assembly is connected to the storage assembly, and the valve assembly is used to adjust the compressed air stored in the storage assembly to a preset pressure and output it from the air outlet end of the valve assembly when the valve is opened; A filter assembly, wherein the air inlet end of the filter assembly is used to communicate with the area to be ventilated, and the filter assembly is used to filter the gas flowing through the filter assembly; An air injector, wherein an air inlet end of the air injector is respectively connected with an air outlet end of the valve assembly and an air outlet end of the filter assembly.

2. The ventilation and filtration system according to claim 1, characterized in that: The storage component comprises: at least one compressed air tank, the compressed air tank being used to store compressed air; At least one first isolation valve, each of the first isolation valves is arranged corresponding to a compressed air tank, a first end of the first isolation valve is communicated with the corresponding compressed air tank, and a second end of the first isolation valve is communicated with the valve assembly.

3. The ventilation and filtration system according to claim 2, characterized in that: The storage component also includes: An air intake valve, the air intake end of the air intake valve is connected to an external air compression system, and the air outlet end of the air intake valve is connected to the second end of each of the first isolation valves, wherein when the air intake valve and the first isolation valve are opened, the external air compression system delivers compressed air to the compressed air tank.

4. The ventilation and filtration system according to claim 1, characterized in that: The valve assembly comprises: at least one valve branch, wherein the valve branch comprises: a pressure regulating valve, wherein the air inlet end of the pressure regulating valve is connected to the storage assembly, and the pressure regulating valve is used to regulate the pressure of the gas flowing through the pressure regulating valve; At least one second isolation valve, the air inlet end of the second isolation valve is communicated with the air outlet end of the pressure regulating valve, and the air outlet end of the second isolation valve is communicated with the air inlet end of the air injector.

5. The ventilation and filtration system according to claim 4, characterized in that: The valve branch includes: two second isolation valves, the air inlet ends of the two second isolation valves are respectively connected to the air outlet ends of the pressure regulating valve, and the air outlet ends of the two second isolation valves are respectively connected to the air inlet end of the air injector.

6. The ventilation and filtration system according to claim 5, characterized in that: The second isolation valve is one of an electrically controlled isolation valve and a mechanically controlled isolation valve.

7. The ventilation and filtration system according to claim 1, characterized in that: The filter assembly comprises: An exhaust pipe network, the exhaust pipe network is used to communicate with the area to be ventilated; At least one filter, the air inlet end of the filter is connected to the exhaust pipe network, and the air outlet end of the filter is connected to the air inlet end of the air injector.

8. The ventilation and filtration system according to claim 7, characterized in that: The at least one filter comprises: A particle air filter, wherein the air inlet end of the particle air filter is connected to the exhaust pipe network; An iodine adsorber, wherein an air inlet end of the iodine adsorber is communicated with an air outlet end of the particulate air filter, and an air outlet end of the iodine adsorber is communicated with an air inlet end of the air injector.

9. The ventilation and filtration system according to claim 8, characterized in that: The at least one filter further comprises: A pre-air filter, wherein the air inlet end of the pre-air filter is connected to the exhaust pipe network, and the air outlet end of the pre-air filter is connected to the air inlet end of the particle air filter; A post-air filter, wherein the air inlet end of the post-air filter is communicated with the air outlet end of the iodine adsorber, and the air outlet end of the post-air filter is communicated with the air inlet end of the air injector.

10. The ventilation and filtration system according to claim 1, characterized in that: The filter assembly also includes: A heater is arranged at the air inlet end of the filter assembly and is used to adjust the humidity of the gas entering the air inlet end of the filter assembly.

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