Transition cabin pressure adjusting system suitable for pressurizing entering and exiting of building personnel

Abstract

The utility model discloses a transition cabin pressure regulating system suitable for pressurizing building personnel to enter and exit, which is characterized in that a transition cabin is separated from a pressurizing chamber through an inner sealing door and is separated from the outside through an outer sealing door; comprising a pressure reduction pipeline communicating the outside with the inside of a transition cabin, a pressure reduction regulating valve arranged on the pressure reduction pipeline, a pressurization pipeline communicating the inside of the transition cabin with the inside of a pressurization chamber, a pressurization regulating valve arranged on the pressurization pipeline, and a pressure reduction differential pressure sensor used for detecting the pressure difference between the outside and the inside of the transition cabin, and the pressurizing differential pressure sensor is used for detecting the air pressure difference in the transition cabin and the pressurizing chamber. According to the system, the pressure reduction rate and the pressurization rate of the transition cabin can be controlled through feedback of the pressure reduction differential pressure sensor and the pressurization differential pressure sensor and adjustment of the pressure reduction adjusting valve and the pressurization adjusting valve, and the comfort of entering and exiting a pressurized building is improved.

Description

Technical Field

[0001] The utility model relates to a pressurized building, in particular to a transition cabin pressure regulating system suitable for personnel entering and exiting the pressurized building. Background Art

[0002] A pressurized building is one that uses pressurization and sealing measures to ensure that the indoor pressure is greater than the outdoor pressure during use. This increased indoor pressure also increases the indoor oxygen partial pressure, thereby alleviating altitude sickness caused by low oxygen levels. It is suitable for use in areas above 3,000 meters, such as the Yunnan-Guizhou Plateau and the Qinghai-Tibet Plateau.

[0003] In order to avoid large pressure fluctuations caused by entering and exiting pressurized buildings, pressurized buildings generally have a transition cabin, which is separated from the pressurized room by an inner sealed door and from the outside by an outer sealed door. Currently, entry and exit from the outside-transition cabin-pressurized room are achieved by opening and closing the sealed door. The pressure adjustment range cannot be accurately controlled, and the comfort is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a transition cabin pressure regulation system suitable for personnel entering and exiting a pressurized building. The system can utilize the feedback of a decompression differential pressure sensor and a pressurization differential pressure sensor as well as the regulation of a decompression regulating valve and a pressurization regulating valve to control the decompression rate and pressurization rate of the transition cabin, thereby improving the comfort of entering and exiting a pressurized building.

[0005] The technical solution adopted in this utility model is:

[0006] A pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building, wherein the transition cabin is separated from a pressurized chamber by an inner sealing door and from the outside by an outer sealing door, and comprises a decompression pipeline connecting the outside and the transition cabin, a decompression regulating valve arranged on the decompression pipeline, a pressurization pipeline connecting the transition cabin and the pressurized chamber, a pressurization regulating valve arranged on the pressurization pipeline, a decompression differential pressure sensor for detecting the pressure difference between the outside and the transition cabin, and a pressurization differential pressure sensor for detecting the pressure difference between the inside of the transition cabin and the pressurized chamber.

[0007] Furthermore, it also includes a controller, an entry request access control and an exit request access control. The entry request access control is located outside the transition cabin, and the exit request access control is located in the pressurization chamber. The controller is electrically connected to the pressure reducing regulating valve, the pressurization regulating valve, the pressure reducing differential pressure sensor, the pressurization differential pressure sensor, the entry request access control, the exit request access control, the inner sealed door and the outer sealed door respectively.

[0008] Furthermore, multiple groups of pressure regulating valves of different diameters are installed in parallel on the pressure pipeline, wherein the ends of all small-diameter pressure regulating valves are connected together and connected to muffler one, the ends of each medium-diameter pressure regulating valve are respectively connected to muffler two, and the ends of the large-diameter pressure regulating valves are directly connected to the outside world.

[0009] Preferably, the small-diameter pressure regulating valve is close to the boosting chamber on the pressure pipeline, the large-diameter pressure regulating valve is at one end of the pressure pipeline away from the boosting chamber, and the medium-diameter pressure regulating valve is located between the small-diameter pressure regulating valve and the large-diameter pressure regulating valve on the pressure pipeline.

[0010] Preferably, the first silencer is a honeycomb multi-section silencer filled with porous material, and the second silencer is a micro-porous composite silencer.

[0011] Preferably, the small-diameter pressure regulating valve, the medium-diameter pressure regulating valve, and the large-diameter pressure regulating valve are all electric ball valves.

[0012] Furthermore, multiple groups of pressure reducing regulating valves of different diameters are installed in parallel on the pressure reducing pipeline, wherein the ends of all small-diameter pressure reducing regulating valves are connected together and connected to muffler three, the ends of each medium-diameter pressure reducing regulating valve are respectively connected to muffler four, and the ends of the large-diameter pressure reducing regulating valves are directly connected to the outside world.

[0013] Preferably, the small-diameter pressure-reducing regulating valve is close to the transition chamber on the pressure-reducing pipeline, the large-diameter pressure-reducing regulating valve is at one end of the pressure-reducing pipeline away from the transition chamber, and the medium-diameter pressure-reducing regulating valve is located between the small-diameter pressure-reducing regulating valve and the large-diameter pressure-reducing regulating valve on the pressure-reducing pipeline.

[0014] Preferably, the third silencer is a honeycomb multi-section silencer filled with porous material, and the fourth silencer is a micro-porous composite silencer.

[0015] Preferably, the small-diameter pressure-reducing regulating valve, the medium-diameter pressure-reducing regulating valve, and the large-diameter pressure-reducing regulating valve are all electric ball valves.

[0016] The beneficial effects of the present invention are:

[0017] The system can use the feedback from the decompression differential pressure sensor and the pressurization differential pressure sensor as well as the regulation of the decompression regulating valve and the pressurization regulating valve to control the decompression rate and pressurization rate of the transition cabin, thereby improving the comfort of entering and exiting the pressurized building: when it is necessary to enter the pressurized room from the outside, first fully open the decompression regulating valve to quickly decompress the transition cabin until the decompression differential pressure sensor detects that the air pressure outside and inside the transition cabin are balanced. After that, the personnel enter the transition cabin through the outer sealed door and close the outer sealed door. Then, fully close the decompression regulating valve and open the pressurization regulating valve to pressurize the transition cabin. The opening of the pressurization regulating valve is adjusted as needed to adjust the pressurization rate until the pressurization differential pressure sensor detects that the air pressure inside the transition cabin and the pressurized room are balanced. When the pressure in the transition cabin is balanced, the personnel enter the boosting chamber through the inner sealed door, close the inner sealed door, and then completely close the pressurization regulating valve; when it is necessary to leave the boosting chamber and go outdoors, first fully open the pressurization regulating valve to quickly pressurize the transition cabin until the pressurization differential pressure sensor detects that the air pressure in the boosting chamber and the transition cabin is balanced. After that, the personnel enter the transition cabin through the inner sealed door, close the inner sealed door, and then completely close the pressurization regulating valve and open the decompression regulating valve to decompress the transition cabin. The opening of the decompression regulating valve is adjusted as needed to adjust the decompression rate. Until the decompression differential pressure sensor detects that the air pressure in the transition cabin and the outdoors is balanced, the personnel go outdoors through the outer sealed door, close the outer sealed door, and then completely close the decompression regulating valve.

[0018] Set up a plurality of regulating pipes of different diameters such as small, medium and large and corresponding valve bodies, and equip them with silencers respectively. By adjusting the pressure regulating sequence of different pipe diameters, the noise during the increase and decrease pressure of the transition chamber can be reduced. On the one hand, the noise can be reduced by the set silencer, and on the other hand, by first opening the small diameter pipe to reduce the pressure difference and then using the medium and large diameter pipes to quickly balance the pressure, it can avoid the noise generated by the single large diameter pressure regulation causing discomfort to people entering and leaving the transition chamber. The setting of multiple regulating pipes enables more pressure regulating channels to be provided in emergency situations, and by opening multiple channels at the same time, the pressure regulation efficiency in emergency situations can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of a pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building in a first embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of a pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building in a second embodiment of the present invention.

[0022] Figure 3 This is the dynamic adjustment strategy adopted by the controller in the second embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the pressure regulating valves in Example 3 of the present utility model installed in parallel on the pressure pipeline.

[0024] Figure 5 This is a schematic diagram of the pressure reducing regulating valves in Example 3 of the present utility model installed in parallel on the pressure reducing pipeline.

[0025] In the figure: 1-outdoors; 2-external sealed door; 3-inside the transition cabin; 4-inner sealed door; 5-inside the pressurized room; 6-decompression pipeline; 7-decompression regulating valve; 8-pressurization pipeline; 9-pressurization regulating valve; 10-decompression differential pressure sensor; 11-pressurization differential pressure sensor; 12-entry request access control; 13-exit request access control; 14-small-diameter pressurization regulating valve; 15-medium-diameter pressurization regulating valve; 16-large-diameter pressurization regulating valve; 17-muffler one; 18-muffler two; 19-small-diameter decompression regulating valve; 20-medium-diameter decompression regulating valve; 21-large-diameter decompression regulating valve; 22-muffler three; 23-muffler four. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0028] It should be noted that similar reference numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. In addition, the terms "muffler 1," "muffler 2," "muffler 3," "muffler 4," etc. are used only to distinguish the descriptions and should not be understood to indicate or imply relative importance.

[0029] The features and performance of the present application are further described in detail below with reference to the embodiments.

[0030] Example 1

[0031] This embodiment discloses a pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building. Figure 1 As shown, the transition cabin is separated from the boosting chamber by an inner sealing door 4 and from the outside 1 by an outer sealing door 2, and includes a decompression pipeline 6, a decompression regulating valve 7, a pressurization pipeline 8, a pressurization regulating valve 9, a decompression differential pressure sensor 10 and a pressurization differential pressure sensor 11; and there are: the decompression pipeline 6 connects the outside 1 and the transition cabin 3, and the decompression regulating valve 7 is arranged on the decompression pipeline 6; the pressurization pipeline 8 connects the transition cabin 3 and the boosting chamber 5, and the pressurization regulating valve 9 is arranged on the pressurization pipeline 8; the decompression differential pressure sensor 10 is used to detect the air pressure difference between the outside 1 and the transition cabin 3, and the pressurization differential pressure sensor 11 is used to detect the air pressure difference between the transition cabin 3 and the boosting chamber 5.

[0032] The system can control the decompression rate and pressurization rate of the transition cabin by using the feedback of the decompression differential pressure sensor 10 and the pressurization differential pressure sensor 11 as well as the regulation of the decompression regulating valve 7 and the pressurization regulating valve 9, thereby improving the comfort of entering and exiting the pressurized building:

[0033] When it is necessary to enter the pressurized room 5 from the outside 1, first fully open the decompression regulating valve 7 to quickly decompress the transition cabin until the decompression differential pressure sensor 10 detects that the air pressure outside 1 and inside the transition cabin 3 are balanced. After that, the person enters the transition cabin through the outer sealed door 2 and closes the outer sealed door 2. Then, fully close the decompression regulating valve 7, open the pressurization regulating valve 9, pressurize the transition cabin, and adjust the opening of the pressurization regulating valve 9 as needed to adjust the pressurization rate. Until the pressurization differential pressure sensor 11 detects that the air pressure inside the transition cabin 3 and inside the pressurized room 5 are balanced, the person enters the pressurized room 5 through the inner sealed door 4, closes the inner sealed door 4, and then fully closes the pressurization regulating valve 9.

[0034] When it is necessary to leave the pressurized room 5 and go to the outside 1, first fully open the pressurization regulating valve 9 to quickly pressurize the transition cabin until the pressurization differential pressure sensor 11 detects that the air pressure inside the pressurized room 5 and the transition cabin 3 is balanced. After that, the personnel enters the transition cabin through the inner sealed door 4 and closes the inner sealed door 4. Then, fully close the pressurization regulating valve 9 and open the decompression regulating valve 7 to decompress the transition cabin, and adjust the opening of the decompression regulating valve 7 and then adjust the decompression rate as needed, until the decompression differential pressure sensor 10 detects that the air pressure inside the transition cabin 3 and the outside 1 is balanced. After that, the personnel go out to the outside 1 through the outer sealed door 2 and close the outer sealed door 2, and then fully close the decompression regulating valve 7.

[0035] The entire system can manually adjust the pressurization rate and the decompression rate; other methods can also be used to adjust the pressurization rate and the decompression rate, as shown in the following Examples 2 and 3 for details.

[0036] Example 2

[0037] This embodiment discloses a pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building. Figure 2 As shown: On the basis of embodiment one, a controller, an entry request access control 12 and an exit request access control 13 are added. The entry request access control 12 is located outside the transition cabin, and the exit request access control 13 is located inside the pressurized chamber 5. The controller is electrically connected to the pressure reducing regulating valve 7, the pressurizing regulating valve 9, the pressure reducing differential pressure sensor 10, the pressurizing differential pressure sensor 11, the entry request access control 12, the exit request access control 13, the inner sealed door 4 and the outer sealed door 2 respectively.

[0038] When it is necessary to enter the pressurized room 5 from the outside 1, the person presses the entry request access control 12. After receiving the entry request instruction, the controller first fully opens the pressure reducing regulating valve 7 to quickly depressurize the transition cabin until the pressure reducing differential pressure sensor 10 feedbacks that the air pressure outside the room 1 and inside the transition cabin 3 is balanced. The outer sealed door 2 is controlled to open, and the person enters the transition cabin through the outer sealed door 2 and closes the outer sealed door 2. After the controller determines that the outer sealed door 2 is closed, it controls the pressure reducing regulating valve 7 to be fully closed and the pressurization regulating valve 9 to be opened to pressurize the transition cabin, and adjusts the opening of the pressurization regulating valve 9 to adjust the pressurization rate. Until the pressurization differential pressure sensor 11 feedbacks that the air pressure in the transition cabin 3 and the pressurized room 5 is balanced, the inner sealed door 4 is controlled to be opened, and the person enters the pressurized room 5 through the inner sealed door 4 and closes the inner sealed door 4. After the controller determines that the inner sealed door 4 is closed, it controls the pressurization regulating valve 9 to be fully closed.

[0039] When it is necessary to leave the pressurized room 5 to go to the outside 1, the person presses the exit request access control 13. After receiving the exit request instruction, the controller first fully opens the pressurization regulating valve 9 to quickly pressurize the transition cabin until the pressurization differential pressure sensor 11 feedbacks that the air pressure in the pressurized room 5 and the transition cabin 3 is balanced. The inner sealed door 4 is controlled to open, and the person enters the transition cabin through the inner sealed door 4 and closes the inner sealed door 4. After the controller determines that the inner sealed door 4 is closed, it controls the pressurization regulating valve 9 to be fully closed and the pressure reduction regulating valve 7 to be opened to decompress the transition cabin, and adjusts the opening of the pressure reduction regulating valve 7 to adjust the pressure reduction rate. Until the pressure reduction differential pressure sensor 10 feedbacks that the air pressure in the transition cabin 3 and the outside 1 is balanced, the outer sealed door 2 is controlled to be opened, and the person goes out to the outside 1 through the outer sealed door 2 and closes the outer sealed door 2. After the controller determines that the outer sealed door 2 is closed, it controls the pressure reduction regulating valve 7 to be fully closed.

[0040] The controller automatically controls each step of entering and exiting the door according to the set program. Various strategies can be used to control the pressurization rate and decompression rate. In order to allow different groups of people to enter and exit comfortably, a dynamic adjustment strategy for different groups of people is adopted: through user group portrait analysis, appropriate adjustment rates are selected for different groups of people, such as Figure 3As shown in the figure, the instruction rate is accumulated over time, and the deviation caused by external pressure disturbance and inaccurate system modeling is compensated at the same time, forming a pressure deviation value that is fed back to the controller, and the controller dynamically controls the valve opening.

[0041] Specifically:

[0042] Set the controller discrete output variable to , the controller is described as a piecewise feedforward compensation PID control

[0043]

[0044] Where, is the segmentation threshold, is the closed-loop feedback deviation, As the discrete output of the controller, different segment thresholds, different control parameters, and different outputs are also different.

[0045]

[0046] Where, represents the proportionality coefficient, represents the integration time, represents the differential time;

[0047] At the same time, since the pressure change process is a time-delay link, the introduction of feedforward compensation control can greatly improve the system tracking performance.

[0048]

[0049] in, is the feedforward compensation, is the feedforward compensation coefficient, Detect the actual pressure difference value of the current transition tank.

[0050] Accumulate user portraits for different groups of people, mainly reflected in the proportion coefficient , integration time , differential time , feedforward coefficient , segmentation threshold Coordination of five parameters:

[0051] The user groups are divided into three categories: A, B, and C. Category A is suitable for young and middle-aged people, officers and soldiers, maintenance personnel, and other people who need to quickly enter and exit the transition cabin; Category B is suitable for people who have certain altitude sickness and need to enter the pressurized cabin to alleviate the symptoms; Category C is suitable for the elderly or people with mild underlying diseases. They can only choose slow pressurization. Faster pressurization speed will cause symptoms such as tinnitus and chest tightness.

[0052] For Class A population, the segmentation threshold Defined as 5kPa: When the pressure difference is large, ignore the integral and differential links, set the proportional coefficient to 1.5-2.3, and the actual opening of the proportional control valve increases rapidly to 80-90%; when the pressure difference is less than 5kPa, add a feedforward link, set the coefficient to 0.3-0.7, set the proportional coefficient to 0.7-1.4, add integral and differential links, set the integral time to 30-45s, and the differential time to 10-15s;

[0053] For category B, the segmentation threshold Defined as 10kPa: When the pressure difference is large, the integral and differential steps are ignored, and the proportional coefficient is set to 0.5-1.3; when the pressure difference is less than 10kPa, the proportional coefficient is reduced to alleviate the adverse reactions of the human body caused by rapid pressurization, and is set to 0.7-1.4. Only the integral step is considered, and the integral time is set to 20-30s;

[0054] For Category C people, the transition process speed is reduced throughout the entire process to avoid adverse reactions as much as possible. The proportional coefficient is reduced, the integral coefficient is set to 0.1-0.5, only the integral link is considered, and the integral time is set to 10-20s. The pressure difference adjustment process is the slowest and may even produce some oscillations, but the process is the most comfortable and has the least adverse reactions to the human body.

[0055] In addition to using a controller, multi-stage adjustment of the pressurization rate and the decompression rate can also be achieved through a combination of valves, as shown in the following embodiment three.

[0056] Example 3

[0057] This embodiment discloses a pressure regulating system for a transition cabin suitable for personnel entering and exiting a pressurized building. Figure 4 and Figure 5 As shown in FIG, based on the first embodiment, the pressurizing regulating valve 9 and the decompressing regulating valve 7 are improved.

[0058] like Figure 4As shown, multiple groups of pressure regulating valves 9 of different diameters are installed in parallel on the pressure pipeline 8, wherein the ends of all small-diameter pressure regulating valves 14 are connected together and connected to silencer 17, the ends of each medium-diameter pressure regulating valve 15 are respectively connected to silencer 2 18, and the ends of the large-diameter pressure regulating valve 16 are directly connected to the outside world. When it is necessary to pressurize the transition cabin, the small-diameter pressure regulating valve 14 is opened first. Under the restriction of the small diameter and silencer 17, the airflow in the boosting chamber 5 enters the transition chamber at a lower flow rate. After the pressure difference between the boosting chamber 5 and the transition cabin 3 drops to a certain level, the medium-diameter pressure regulating valve 15 is opened (keeping the small-diameter pressure regulating valve 14 open). This can increase the airflow rate and avoid excessive noise. When the pressure difference between the boosting chamber 5 and the transition cabin 3 drops to a smaller range, the large-diameter pressure regulating valve is opened. The pressure regulating valve 16 (maintaining the medium-caliber pressure regulating valve 15 and the small-caliber pressure regulating valve 14 open) rapidly increases the flow rate, quickly reduces the pressure differential, and completes the connection. Simultaneously, the silencer 17 and the silencer 2 18 reduce noise. In an emergency, when the transition compartment needs to be pressurized to facilitate evacuation, the small-caliber pressure regulating valve 14, the medium-caliber pressure regulating valve 15, and the large-caliber pressure regulating valve 16 can be opened simultaneously, rapidly connecting the boost chamber 5 with the transition compartment 3 at high flow rates. Thus, multi-stage pressure regulation is achieved, and in an emergency, the transition chamber can be rapidly pressurized, connecting it to the boost chamber 5, ensuring rapid evacuation. While normally, opening the valves during pressurization produces a sharp whistling sound of 100dB, this combined pressure regulating valve 9 can reduce the noise level during the pressurization process to 50-60dB, a reduction of up to 50%, achieving a level of near-instability to the human body.

[0059] like Figure 4 As shown, in this embodiment, preferably: the small-diameter pressure regulating valve 14 is close to the boosting chamber 5 on the pressurizing pipeline 8, the large-diameter pressure regulating valve 16 is at one end of the pressurizing pipeline 8 away from the boosting chamber 5, and the medium-diameter pressure regulating valve 15 is located between the small-diameter pressure regulating valve 14 and the large-diameter pressure regulating valve 16 on the pressurizing pipeline 8. This arrangement can reduce fluctuations in the pressurization process.

[0060] In this embodiment, preferably: silencer 17 is a honeycomb multi-section silencer filled with porous material, silencer 2 18 is a micro-hole composite silencer; the small-diameter pressure regulating valve 14, the medium-diameter pressure regulating valve 15, and the large-diameter pressure regulating valve 16 are all electric ball valves.

[0061] like Figure 5As shown, multiple groups of pressure reducing regulating valves 7 of different diameters are installed in parallel on the pressure reducing pipeline 6, wherein the ends of all small-diameter pressure reducing regulating valves 19 are connected together and connected to the muffler three 22, the ends of each medium-diameter pressure reducing regulating valve 20 are respectively connected to the muffler four 23, and the ends of the large-diameter pressure reducing regulating valves 21 are directly connected to the outside world. When it is necessary to decompress the transition cabin, first open the small-diameter pressure-reducing regulating valve 19. Under the restriction of the small-diameter and the silencer three 22, the air flow in the transition chamber enters the outdoor 1 at a lower flow rate. After the pressure difference between the transition chamber and the outdoor 1 drops to a certain level, open the medium-diameter pressure-reducing regulating valve 20 (keep the small-diameter pressure-reducing regulating valve 19 open) to increase the air flow rate and avoid excessive noise. When the pressure difference between the transition chamber and the outdoor 1 drops to a smaller range, open the large-diameter pressure-reducing regulating valve 21 (keep the medium-diameter pressure-reducing regulating valve 20 and the small-diameter pressure-reducing regulating valve 19 open). The flow rate increases rapidly, the pressure difference is reduced rapidly, and the connection is completed. At the same time, the silencer three 22 and the silencer four 23 can reduce noise. When it is necessary to decompress the transition chamber to achieve personnel evacuation in an emergency, the small-diameter pressure-reducing regulating valve 19, the medium-diameter pressure-reducing regulating valve 20, and the large-diameter pressure-reducing regulating valve 21 can be opened at the same time to quickly complete the connection between the transition chamber and the outdoor 1 at a high flow rate. Therefore, it is possible to achieve multi-stage pressure reduction and, in an emergency, quickly reduce the pressure in the transition chamber, connecting it to the outside 1, ensuring rapid evacuation of personnel. While a typical pressure reduction valve opening produces a sharp whistling sound of 100dB, the combined pressure-reducing regulating valve 7 can reduce the noise level during the pressure reduction process to 50-60dB, a reduction of up to 50%, achieving a level of near-instability to the human body.

[0062] like Figure 5 As shown, in this embodiment, preferably: the small-diameter pressure-reducing regulating valve 19 is located on the pressure-reducing pipeline 6 close to the transition chamber, the large-diameter pressure-reducing regulating valve 21 is located on one end of the pressure-reducing pipeline 6 away from the transition chamber, and the medium-diameter pressure-reducing regulating valve 20 is located on the pressure-reducing pipeline 6 between the small-diameter pressure-reducing regulating valve 19 and the large-diameter pressure-reducing regulating valve 21. This arrangement can reduce fluctuations in the pressure-reducing process.

[0063] In this embodiment, preferably: silencer three 22 is a honeycomb multi-section silencer filled with porous material, silencer four 23 is a micro-hole composite silencer; the small-diameter pressure reducing regulating valve 19, the medium-diameter pressure reducing regulating valve 20, and the large-diameter pressure reducing regulating valve 21 are all electric ball valves.

[0064] Of course, the second embodiment and the third embodiment may also be combined to control the pressure reducing regulating valve 7 and the pressure increasing regulating valve 9 of different calibers through the controller.

[0065] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Claims

1. A pressure regulating system for a transition chamber for personnel entering and exiting a pressurized building, wherein the transition chamber is separated from the pressurized chamber by an inner sealing door and from the outside by an outer sealing door, and is characterized by: It includes a decompression pipeline connecting the outside and the transition cabin, a decompression regulating valve arranged on the decompression pipeline, a pressurization pipeline connecting the transition cabin and the boost chamber, a pressurization regulating valve arranged on the pressurization pipeline, a decompression differential pressure sensor for detecting the air pressure difference between the outside and the transition cabin, and a pressurization differential pressure sensor for detecting the air pressure difference between the transition cabin and the boost chamber.

2. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 1, characterized in that: It also includes a controller, an entry request access control and an exit request access control. The entry request access control is located outside the transition cabin, and the exit request access control is located in the pressurized room. The controller is electrically connected to the pressure reducing regulating valve, the pressurizing regulating valve, the pressure reducing differential pressure sensor, the pressurizing differential pressure sensor, the entry request access control, the exit request access control, the inner sealed door and the outer sealed door respectively.

3. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 1 or 2, characterized in that: Multiple groups of pressure regulating valves with different diameters are installed in parallel on the pressure pipeline, among which the ends of all small-diameter pressure regulating valves are connected together and connected to muffler 1, the ends of each medium-diameter pressure regulating valve are connected to muffler 2 respectively, and the ends of large-diameter pressure regulating valves are directly connected to the outside world.

4. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building as claimed in claim 3, characterized in that: The small-diameter pressure regulating valve is close to the boost chamber on the pressure pipeline, the large-diameter pressure regulating valve is at one end of the pressure pipeline away from the boost chamber, and the medium-diameter pressure regulating valve is located between the small-diameter pressure regulating valve and the large-diameter pressure regulating valve on the pressure pipeline.

5. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building as claimed in claim 3, characterized in that: The first silencer is a honeycomb multi-section silencer filled with porous materials, and the second silencer is a micro-hole composite silencer.

6. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building as claimed in claim 3, characterized in that: Small-diameter pressure regulating valves, medium-diameter pressure regulating valves, and large-diameter pressure regulating valves are all electric ball valves.

7. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 1 or 2, characterized in that: Multiple groups of pressure reducing regulating valves with different diameters are installed in parallel on the pressure reducing pipeline, wherein the ends of all small-diameter pressure reducing regulating valves are connected together and connected to muffler three, the ends of each medium-diameter pressure reducing regulating valve are respectively connected to muffler four, and the ends of the large-diameter pressure reducing regulating valves are directly connected to the outside world.

8. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 7, characterized in that: The small-diameter pressure reducing regulating valve is close to the transition chamber on the pressure reducing pipeline, the large-diameter pressure reducing regulating valve is at one end of the pressure reducing pipeline away from the transition chamber, and the medium-diameter pressure reducing regulating valve is located between the small-diameter pressure reducing regulating valve and the large-diameter pressure reducing regulating valve on the pressure reducing pipeline.

9. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 7, characterized in that: The third silencer is a honeycomb multi-section silencer filled with porous materials, and the fourth silencer is a micro-hole composite silencer.

10. The pressure regulating system for a transition cabin suitable for personnel entry and exit of a pressurized building according to claim 7, characterized in that: Small-diameter pressure reducing regulating valves, medium-diameter pressure reducing regulating valves, and large-diameter pressure reducing regulating valves are all electric ball valves.

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