Supercharging building system and two-stage supercharging device thereof

Abstract

The utility model provides a pressurizing building system and a two-stage pressurizing device thereof. The two-stage supercharging device of the supercharging building system comprises a first-stage supercharging device and a second-stage supercharging device, the first-stage supercharging device comprises first-stage supercharging equipment and a first supercharging pipeline communicated with an outlet of the first-stage supercharging equipment, and an outlet of the first supercharging pipeline is communicated with an inlet of a transition chamber; the second-stage supercharging device comprises a second supercharging pipeline and second-stage supercharging equipment arranged in the middle of the second supercharging pipeline, an inlet of the second supercharging pipeline communicates with an outlet of the transition chamber, and an outlet of the second supercharging pipeline communicates with an inlet of the supercharging building. According to the two-stage supercharging device, the vortex fan is used as supercharging equipment of a supercharging building at the altitude of 4500 m or above and a supercharging building for increasing the indoor air pressure of the building to 0.9 standard atmospheric pressure or above within 3500-4500 m, the cost of the supercharging device can be reduced, and the supercharging device can be conveniently overhauled.

Description

Technical Field

[0001] This utility model relates to the field of pressurization system technology, and in particular to a pressurized building system and its two-stage pressurization device. Background Technology

[0002] Pressurized buildings have the function of increasing the internal pressure of a building, which can create a low-altitude air pressure environment in high-altitude areas and alleviate acute and chronic altitude sickness in people who live or travel for a long time.

[0003] The increase in internal air pressure in a pressurized building is achieved through a complete equipment system, with the pressurization equipment being the key component. Vortex blowers are a preferred choice for pressurization equipment due to their small size, light weight, low cost, high reliability, low maintenance requirements, and lack of low-frequency noise. However, the airflow of a vortex blower decreases rapidly with increasing back pressure; therefore, vortex blowers are currently used in the following pressurized buildings:

[0004] 1) Pressurized buildings at altitudes of 3500-4500 meters that increase the internal pressure to below 0.9 atmospheres;

[0005] 2) Pressurized buildings at altitudes above 4,500 meters.

[0006] For pressurized buildings at altitudes of 3,500-4,500 meters that increase the internal pressure to more than 0.9 atmospheres, and for pressurized buildings at altitudes above 4,500 meters, the pressurization equipment used is mostly screw fans and screw air compressors.

[0007] Screw blowers and screw air compressors have the following disadvantages:

[0008] 1. Large size and heavy weight make installation difficult at high altitudes: In areas above 4000m altitude, the physical functions of construction workers decline significantly, and the large size and heavy weight of screw fans and screw air compressors pose a huge challenge to the installation personnel.

[0009] 2. High life-cycle cost: Screw fans and screw air compressors have many parts and are highly complex, resulting in high initial investment costs. Furthermore, due to the large number of parts, there are more potential failures later on, increasing maintenance costs after construction and commissioning, leading to a high overall life-cycle cost.

[0010] 3. Increased complexity of the booster system: Due to issues such as low-frequency noise at the air outlet, screw air compressors and screw fans require specialized noise reduction devices; and due to lubricating oil contamination at the outlet, air purification devices are needed. The complexity of the booster system is thus increased. Utility Model Content

[0011] The main purpose of this utility model is to provide a two-stage pressurization device and system for pressurized buildings, which aims to use vortex blowers in pressurized buildings at altitudes above 4,500 meters or in pressurized buildings at altitudes between 3,500 and 4,500 meters to increase the indoor air pressure to more than 0.9 standard atmospheres.

[0012] To achieve the above objectives, this utility model provides a two-stage pressurization device for a pressurized building system, comprising a primary pressurization device and a secondary pressurization device, wherein...

[0013] The first-stage booster device includes a first-stage booster device and a first booster pipe connected to the outlet of the first-stage booster device. The outlet of the first booster pipe is connected to the inlet of the transition chamber.

[0014] The secondary booster device includes a second booster pipe and a second-stage booster device located in the middle of the second booster pipe. The inlet of the second booster pipe is connected to the outlet of the transition chamber, and the outlet of the second booster pipe is connected to the inlet of the booster building.

[0015] Both the first-stage and second-stage pressurization equipment include vortex fans. The first-stage pressurization unit uses outdoor air as a source to perform primary pressurization and send it to the transition chamber. The second-stage pressurization unit performs secondary pressurization on the air in the transition chamber and sends it to the pressurized building.

[0016] Preferably, the two-stage pressurization device of the pressurized building system further includes a controller electrically connected to the first-stage pressurization device and the second-stage pressurization device to control their opening or closing.

[0017] Preferably, the two-stage pressurization device of the pressurized building system further includes a first pressure transmitter installed in the transition room and electrically connected to the controller.

[0018] Preferably, the two-stage pressurization device of the pressurization building system further includes a second pressure transmitter installed inside the pressurization building and electrically connected to the controller.

[0019] Preferably, the two-stage pressurization device of the pressurized building system further includes a CO2 concentration sensor installed inside the pressurized building and electrically connected to the controller.

[0020] Preferably, the two-stage pressurization device of the pressurized building system further includes a pressure relief valve installed on the exhaust port of the pressurized building.

[0021] Preferably, the pressure relief valve is an electric pressure relief valve, which is electrically connected to the controller.

[0022] Preferably, the primary booster device includes multiple primary booster units connected in parallel, each primary booster unit including a first-stage booster device and a first booster pipe; the secondary booster device includes multiple secondary booster units connected in parallel, each secondary booster unit including a second-stage booster device and a second booster pipe.

[0023] Preferably, a valve is also installed on the first pressurization pipeline.

[0024] This utility model further proposes a pressurized building system, including the above-mentioned two-stage pressurization device, and also including a transition room and a pressurized building.

[0025] The two-stage pressurization device for the pressurized building system proposed in this utility model has the following beneficial effects:

[0026] 1. To realize the use of vortex fans as pressurization equipment for pressurized buildings at altitudes above 4500 meters and pressurized buildings at altitudes of 3500-4500 meters to increase the indoor air pressure to above 0.9 standard atmospheres;

[0027] 2. The cost of this booster unit is low: because the cost of a vortex blower is much lower than that of a screw blower and a screw air compressor, the initial investment of the project can be reduced;

[0028] 3. Its maintenance complexity is greatly reduced and its reliability is improved: because the complexity of vortex blowers is far lower than that of screw air compressors and screw blowers, their reliability is higher; and because vortex blowers are small in weight and size, they are easy to replace during maintenance and will not cause the pressurization building to be unusable for a long time during maintenance.

[0029] 4. Since the vortex fan does not require a complex silencing system and air purification system, the structure of this two-stage booster device is simpler. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the first embodiment of the two-stage pressurization device of the pressurized building system of this utility model;

[0031] Figure 2 This is a schematic diagram of the second embodiment of the two-stage pressurization device of the pressurized building system of this utility model.

[0032] In the diagram, 1-first-stage booster equipment, 11-first-stage booster equipment, 12-second-stage booster equipment, 13-third-stage booster equipment, 14-fourth-stage booster equipment, 2-second-stage booster equipment, 21-first-second-stage booster equipment, 22-second-second-stage booster equipment, 23-third-second-stage booster equipment, 24-fourth-second-stage booster equipment, 3-transfer chamber, 4-boosting structure, 5-valve, 6-first pressure transmitter, 7-second pressure transmitter, 8-CO2 concentration sensor, 9-electric pressure relief valve, 10-controller.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0035] It should be noted that in the description of this utility model, the terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] This utility model proposes a two-stage pressurization device for a pressurized building system.

[0037] The invention presents a first embodiment of a two-stage pressurization device for a pressurized building system. (Refer to...) Figure 1 In this embodiment, the two-stage pressurization device of the pressurized building system includes a primary pressurization device and a secondary pressurization device, wherein,

[0038] The first-stage booster device includes a first-stage booster 1 and a first booster pipe connected to the outlet of the first-stage booster 1. The outlet of the first booster pipe is connected to the inlet of the transition chamber 3.

[0039] The secondary booster device includes a second booster pipe and a second-stage booster device 2 located in the middle of the second booster pipe. The inlet of the second booster pipe is connected to the outlet of the transition chamber 3, and the outlet of the second booster pipe is connected to the inlet of the booster building 4.

[0040] Both the first-stage booster 1 and the second-stage booster 2 include a vortex fan. The first-stage booster uses outdoor air as the air source to perform first-stage boosting and send it to the transition chamber 3. The second-stage booster performs second-stage boosting on the air in the transition chamber 3 and sends it to the booster building 4.

[0041] This embodiment employs a two-stage pressurization method. The first stage uses outdoor air as the air source and delivers it to the transition chamber 3. The second stage uses the air from the transition chamber 3 as the air source and delivers it to the pressurized building 4. For ease of description, let the outdoor air pressure be p0, the transition chamber 3 air pressure be p1, the pressurized building 4 internal air pressure be p2, and the fresh air demand within the pressurized building 4 be q2 (the internal air pressure of the pressurized building 4 corresponds to the fresh air demand; the fresh air demand varies under different air pressure conditions, and the air pressure used to calculate q2 is p2). q2 is determined according to the "General Specification for Building Energy Conservation and Renewable Energy Utilization".

[0042] The back pressure of the first-stage booster device 1 is approximately Δp1 = p1 - p0; the air volume of the first-stage booster device is q0 = (q2 * p2) / p0. When selecting the fan, the air volume is taken as 1.05 to 1.3 times q0, denoted as Q0. Q0 is the air volume of the booster device when the back pressure is Δp1, which is obtained through the fan characteristic curve.

[0043] Similarly, the back pressure of the second-stage booster device 2 is approximately Δp2 = p2 - p1; the air volume of the second-stage booster device is q1 = (q2 * p2) / p1. When selecting a fan, the air volume is taken as 1.05 to 1.2 times q1, denoted as Q1. Q1 is the air volume when the back pressure of the booster device is Δp2, which is obtained through the fan characteristic curve.

[0044] Furthermore, the two-stage pressurization device of this pressurized building system also includes a controller 10 electrically connected to the first-stage pressurization device 1 and the second-stage pressurization device 2 to control their opening or closing. It should be noted that the connection circuit between the controller 10 and the first-stage pressurization device 1 and the second-stage pressurization device 2 is a conventional design in the prior art; therefore, its circuit diagram is omitted here.

[0045] In this embodiment, by setting up a controller 10, automatic control of the switching of the first-stage booster device 1 and the second-stage booster device 2 is realized, simplifying the manual operation process.

[0046] Furthermore, the two-stage pressurization device of this pressurized building system includes a first pressure transmitter 6 installed inside the transition chamber 3 and electrically connected to the controller 10. The two-stage pressurization device of this pressurized building system also includes a second pressure transmitter 7 installed inside the pressurized building 4 and electrically connected to the controller 10. The two-stage pressurization device of this pressurized building system also includes a CO2 concentration sensor 8 installed inside the pressurized building 4 and electrically connected to the controller 10.

[0047] The controller 10 is electrically connected to the first pressure transmitter 6, the second pressure transmitter 7, and the CO2 concentration sensor 8. The controller 10 can adjust the operation of different booster devices according to different pressure values, making the device more intelligent and greatly simplifying manual operation.

[0048] The two-stage pressurization device of this pressurized building system also includes a pressure relief valve installed on the exhaust port of the pressurized building 4. The pressure relief valve is an electric pressure relief valve 9, which is electrically connected to the controller 10. The controller 10 can selectively open the electric pressure relief valve 9 according to the internal pressure of the pressurized building 4 to reduce the internal pressure of the pressurized building 4.

[0049] Furthermore, valve 5 is also installed on the first pressurization pipeline. In certain situations where the first-stage pressurization equipment 1 is not required to supply air, the corresponding valve can be closed. Valve 5 is a one-way valve.

[0050] The two-stage booster unit operates in three modes: boosting, pressurizing, and ventilation. These will be explained in detail below.

[0051] Boost mode:

[0052] Step 1: After the building pressurization begins, the first-stage pressurization equipment 1 starts working, and at this time the air pressure in the transition chamber 3 and the pressurization building 4 increases simultaneously;

[0053] Step 2: When the pressure of the second pressure transmitter 7 rises to p1, the second-stage booster device 2 starts to work.

[0054] Step 3: When the pressure of the second pressure transmitter 7 rises to p2, the first-stage booster device 1 and the second-stage booster device 2 stop working simultaneously, and the pressurization is completed.

[0055] Pressure replenishment status:

[0056] Step 1: When the pressure of the second pressure transmitter 7 drops to the baseline pressure, the controller 10 controls the first-stage booster device 1 and the second-stage booster device 2 to start simultaneously;

[0057] Step 2: When the pressure of the second pressure transmitter 7 rises to P2, the controller 10 controls the first-stage booster device 1 and the second-stage booster device 2 to stop working simultaneously, and the pressure replenishment is completed.

[0058] Ventilation status:

[0059] Step 1: When the CO2 concentration sensor 8 measures 1500ppm, the controller 10 controls the electric pressure relief valve 9 to open, the air pressure in the pressurization building 4 decreases, and the first-stage pressurization device 1 and the second-stage pressurization device 2 are started at the same time.

[0060] Step 2: When the CO2 concentration sensor 8 drops to 600ppm or below, the controller 10 closes the electric pressure relief valve 9.

[0061] Step 3: When the pressure of the second pressure transmitter 7 rises to P2, the controller 10 controls the first-stage booster device 1 and the second-stage booster device 2 to stop working simultaneously, and the air exchange is completed.

[0062] The two-stage pressurization device for the pressurized building system proposed in this embodiment has the following beneficial effects:

[0063] 1. To realize the use of vortex fans as pressurization equipment for pressurized buildings at altitudes above 4500 meters and pressurized buildings at altitudes of 3500-4500 meters to increase the indoor air pressure to above 0.9 standard atmospheres;

[0064] 2. The cost of this booster unit is low: because the cost of a vortex blower is much lower than that of a screw blower and a screw air compressor, the initial investment of the project can be reduced;

[0065] 3. Its maintenance complexity is greatly reduced and its reliability is improved: because the complexity of vortex blowers is far lower than that of screw air compressors and screw blowers, their reliability is higher; and because vortex blowers are small in weight and size, they are easy to replace during maintenance and will not cause the pressurization building to be unusable for a long time during maintenance.

[0066] 4. Since the vortex fan does not require a complex silencing system and air purification system, the structure of this two-stage booster device is simpler.

[0067] This utility model also proposes a second embodiment of a two-stage pressurization device for a pressurized building system. (Refer to...) Figure 2 The difference between this embodiment and the first embodiment is that in this embodiment, the first-stage booster device includes a group of multiple parallel first-stage booster units forming a first-stage booster equipment group, and each first-stage booster unit includes a first-stage booster device 1 and a first booster pipe; the second-stage booster device includes a group of multiple parallel second-stage booster units forming a second-stage booster equipment group, and each second-stage booster unit includes a second-stage booster device 2 and a second booster pipe.

[0068] At this point, Q0 is the sum of the air volume of all fans in the first-stage booster group when the back pressure is Δp1, and Q1 is the sum of the air volume of all fans in the second-stage booster system when the back pressure is Δp2.

[0069] By setting up multiple parallel primary and secondary booster units, when one primary or secondary booster unit fails, the other primary and secondary booster units can take over. This ensures the stability of the pressure supply to the booster building and facilitates the maintenance and replacement of the primary and secondary booster units.

[0070] This utility model also proposes a pressurized building system.

[0071] In this preferred embodiment, a pressurized building system includes a two-stage pressurization device, a transition chamber 3, and a pressurized building 4. The specific structure and beneficial effects of the two-stage pressurization device are the same as those in the above embodiment, and will not be repeated here.

[0072] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A two-stage pressurization device for pressurizing a building system, characterized by, The two-stage pressurization device comprises a first-stage pressurization device and a second-stage pressurization device, wherein, the first-stage pressurization device comprises a first-stage pressurization equipment and a first pressurization pipeline in communication with the outlet of the first-stage pressurization equipment, and the outlet of the first pressurization pipeline is in communication with the inlet of the transition chamber; the second-stage pressurization device comprises a second pressurization pipeline and a second-stage pressurization equipment arranged in the middle of the second pressurization pipeline, the inlet of the second pressurization pipeline is in communication with the outlet of the transition chamber, and the outlet of the second pressurization pipeline is in communication with the inlet of the pressurized building; the first-stage pressurization equipment and the second-stage pressurization equipment each comprise a vortex fan, the first-stage pressurization device sends outdoor air as a gas source to the transition chamber after first-stage pressurization, and the second-stage pressurization device sends air in the transition chamber to the pressurized building after second-stage pressurization.

2. The two-stage booster of a boosted building system according to claim 1, wherein, The two-stage pressurization device further comprises a controller in electrical connection with the first-stage pressurization equipment and the second-stage pressurization equipment to control the opening or closing thereof.

3. The two-stage booster of a boosted building system according to claim 2, wherein The two-stage pressurization device further comprises a first pressure transmitter installed in the transition chamber and in electrical connection with the controller.

4. The two-stage booster of claim 3, wherein the first stage booster is a centrifugal booster and the second stage booster is a positive displacement booster. The two-stage pressurization device further comprises a second pressure transmitter installed in the pressurized building and in electrical connection with the controller.

5. The two-stage booster of claim 3, wherein the first stage booster is a centrifugal booster and the second stage booster is a positive displacement booster. The two-stage pressurization device further comprises a CO2 concentration sensor arranged in the pressurized building and in electrical connection with the controller.

6. The two-stage booster of claim 5, wherein the first stage booster is a centrifugal booster and the second stage booster is a positive displacement booster. The two-stage pressurization device further comprises a pressure relief valve installed on the exhaust port of the pressurized building.

7. The two-stage booster of claim 6, wherein the first stage booster is a centrifugal booster and the second stage booster is a positive displacement booster. The pressure relief valve is an electric pressure relief valve in electrical connection with the controller.

8. The two-stage booster of claim 1, wherein, The first-stage pressurization device comprises a plurality of first-stage pressurization units in parallel, each of which comprises a first-stage pressurization equipment and a first pressurization pipeline; and the second-stage pressurization device comprises a plurality of second-stage pressurization units in parallel, each of which comprises a second-stage pressurization equipment and a second pressurization pipeline.

9. A two-stage booster for a pressurized building system according to any one of claims 1 to 8, characterized in that The first pressurization pipeline is further provided with a valve.

10. A pressurized building system, characterized in that The two-stage pressurization device comprising the pressurized building system according to any one of claims 1 to 9 further comprises a transition chamber and a pressurized building.

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