Pressure charging and discharging device and overall pressure test system for containment vessel

Abstract

The application provides a pressure charging and discharging device and a pressure charging and discharging system for a whole containment vessel pressure test. The pressure charging and discharging device comprises a valve body, a valve core and an adjusting module. The valve body is provided with an airflow channel and a mounting port communicated with the airflow channel. The valve core is located at the mounting port and extends into the airflow channel. The adjusting module comprises a mounting body, a driving mechanism, a lead screw, a nut and an anti-rotation mechanism. The lead screw is driven to rotate by the driving mechanism, and the valve core is driven to move relative to the valve body by the nut and the anti-rotation mechanism, so that the adjusting precision of the opening degree of the pressure charging and discharging device is improved, the adjusting speed is accelerated, the pressure charging and discharging device can charge or discharge the containment vessel at a stable speed, manual intervention is not needed, and the safety and working efficiency of the whole containment vessel pressure test pressure charging and discharging system are improved.

Description

Technical Field

[0001] This invention relates to the field of containment pressure testing technology, and in particular to a pressure charging and depressurizing device and a containment pressure testing system. Background Technology

[0002] The containment pressure test involves filling the containment with compressed air to create a test pressure platform for testing. After the target pressure platform is reached, the air inside the containment needs to be vented. Currently, the pressurization and depressurization phases of the test are mainly conducted manually by adjusting valves. During the pressurization and depressurization phases, as the pressure difference between the inside and outside of the containment decreases, the pressurization and depressurization rates decrease continuously while the valve opening remains constant, requiring manual intervention. However, manual intervention is limited by the characteristics of the valves themselves and the influence of on-site noise, resulting in long adjustment times, high adjustment difficulty, and high adjustment frequency. Furthermore, adjusting the pressurization valves further increases the time spent by personnel in the asphyxiation space, the time of noise injury, and the risks of human error and collisions, which is detrimental to inherent safety on-site and the improvement of work efficiency. Summary of the Invention

[0003] Therefore, it is necessary to provide a pressure charging and depressurizing device and a pressure charging and depressurizing system for overall containment pressure testing to address the above problems.

[0004] The technical solution is as follows:

[0005] On the one hand, a pressurization / depressurization device is provided, comprising:

[0006] The valve body is provided with an airflow channel and an installation port communicating with the airflow channel;

[0007] The valve core is located at the mounting port and extends into the airflow channel;

[0008] The adjustment module includes a mounting body, a drive mechanism, a lead screw, a nut, and an anti-rotation mechanism. The mounting body is sealed at the mounting port, the drive mechanism is mounted on the mounting body, the lead screw passes through the mounting body along the axial direction of the mounting port and is sealed to the mounting body, one end of the lead screw is connected to the drive mechanism, the nut is mounted on the other end of the lead screw and connected to the valve core, and the anti-rotation mechanism is connected to the nut and is used to limit the rotation of the nut relative to the lead screw.

[0009] The drive mechanism is used to drive the lead screw to rotate, thereby causing the nut to move axially along the mounting port and causing the valve core to reciprocate relative to the valve body.

[0010] In the pressure charging / discharging device described in the above embodiments, during use, the drive mechanism drives the lead screw to rotate, while the nut on the lead screw cannot rotate relative to the lead screw due to the restriction of the anti-rotation mechanism. This causes the nut to move axially along the lead screw, and simultaneously drives the valve core to reciprocate axially relative to the valve body along the mounting port, thereby adjusting the opening of the pressure charging / discharging device to achieve the effect of regulating the flow rate and pressure charging / discharging rate. Compared with the manual adjustment method in the prior art, this application uses a drive mechanism to control the rotation of the lead screw, and the lead screw, through the cooperation of the nut and the anti-rotation mechanism, drives the valve core to move relative to the valve body. This improves the adjustment accuracy and speed of the pressure charging / discharging device opening, enabling the device to maintain a stable rate for pressurizing or depressurizing the containment without manual intervention, thus improving the safety and working efficiency of the overall containment pressure test pressure charging / discharging system.

[0011] The technical solution will be further explained below:

[0012] In one embodiment, the adjustment module further includes a connecting sleeve, which is sleeved on the lead screw and located on the side of the nut away from the valve core. One end of the connecting sleeve is fixedly connected to the nut, and the other end of the connecting sleeve is connected to the anti-rotation mechanism.

[0013] In one embodiment, the outer side wall of the mounting body away from the valve body is provided with a limiting hole. The anti-rotation mechanism includes a locking member and a sliding sleeve. The sliding sleeve is sleeved on the connecting sleeve. The outer side wall of the sliding sleeve is provided with a limiting part. The limiting part extends into the limiting hole and is circumferentially limited and engaged with the inner wall of the limiting hole along the lead screw, and is axially movable and engaged with the inner wall of the limiting hole along the lead screw. The locking member is used to lock the sliding sleeve and the connecting sleeve in a locking engagement.

[0014] In one embodiment, the locking member is a locking screw, the limiting portion is provided with a mounting through hole extending radially along the sliding sleeve, the outer side wall of the connecting sleeve is provided with a connecting hole corresponding to the mounting through hole, and the locking screw passes through the mounting through hole and is inserted into the connecting hole.

[0015] In one embodiment, the locking screw is shaped like a frustum near the connecting sleeve and is configured to engage with the inner wall of the connecting hole when the locking screw is inserted into the connecting hole.

[0016] In one embodiment, the end face of the mounting body near the valve body is provided with a movable cavity communicating with the mounting port, and the end face of the mounting body away from the valve body is provided with a mounting cavity communicating with the movable cavity. The top wall of the movable cavity is provided with a clearance hole, and the mounting cavity communicates with the movable cavity through the clearance hole. The lead screw passes through the mounting cavity, the clearance hole and the movable cavity in sequence, and extends into the airflow channel.

[0017] In one embodiment, the adjustment module further includes a sealing sleeve disposed on the outer side wall of the nut, and the valve core disposed on the outer side wall of the sealing sleeve;

[0018] And / or, the adjustment module further includes an anti-friction ring, which is sleeved on the outer wall of the valve core and used to reduce the friction between the valve core and the inner wall of the movable cavity.

[0019] In one embodiment, the valve body includes a valve body and a valve seat. The airflow channel and the mounting port are both located on the valve body. The airflow channel has a first inlet and outlet, a second inlet and outlet, and an airflow cavity. The mounting port communicates with the top of the airflow cavity. The first inlet and outlet communicate with one side of the airflow cavity. The second inlet and outlet communicate with the bottom of the airflow cavity. The valve seat is installed at the bottom of the airflow cavity and communicates with the airflow cavity and the second inlet and outlet. The valve core passes through the valve seat and is controlled by the driving mechanism to move relative to the valve seat to adjust the airflow cross-sectional area between the valve core and the valve seat.

[0020] In one embodiment, the mounting body is provided with a movable cavity communicating with the mounting port, and the adjustment module further includes a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are spaced apart along the axial direction of the valve core and are respectively sealed to the inner side wall of the movable cavity and the inner side wall of the valve seat.

[0021] On the other hand, a containment pressure test filling and depressurization system is provided, including a controller, a detection element and the aforementioned filling and depressurization device. The filling and depressurization device is used to communicate with the containment. The controller is communicatively connected to both the detection element and the filling and depressurization device. The detection element is used to detect the filling and depressurization rate at the filling and depressurization device.

[0022] In the containment overall pressure test pressurization and depressurization system described in the above embodiments, when the containment is pressurized or depressurized through the pressurization and depressurization device, the detection component detects the pressurization and depressurization rate at the pressurization and depressurization device in real time and feeds the detection result back to the controller. The controller then automatically controls the pressurization and depressurization device to adjust the opening degree according to the detection result and the preset set rate value, so as to ensure that the containment is pressurized or depressurized at a stable rate without manual intervention, thereby improving the safety and working efficiency of the containment overall pressure test pressurization and depressurization system. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the pressure charging and depressurizing device according to one embodiment.

[0026] Figure 2 This is a schematic diagram of the pressure charging and depressurizing device according to another embodiment.

[0027] Figure 3 for Figure 2 A schematic diagram of the installation body.

[0028] Figure 4 for Figure 2 A magnified view of part A in the middle.

[0029] Figure 5 for Figure 2 A magnified view of part B in the middle section.

[0030] Figure 6 for Figure 2 A schematic diagram of the sliding sleeve in the middle.

[0031] Figure 7 for Figure 2 A schematic diagram of the valve body.

[0032] Figure 8 This is a schematic diagram of the pressure charging and depressurizing device according to another embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Pressurization / depressurization device; 100. Valve body; 110. Airflow passage; 120. Valve body; 121. Mounting port; 122. First inlet / outlet; 123. Second inlet / outlet; 124. Airflow chamber; 130. Valve seat; 200. Valve core; 300. Adjustment module; 310. Mounting body; 311. Movable chamber; 312. Clearance hole; 313. Mounting chamber; 314. Limiting hole; 320. Drive mechanism; 321. Servo Serving motor; 322, reducer; 331, lead screw; 332, nut; 340, anti-rotation mechanism; 341, locking element; 342, sliding sleeve; 3421, limiting part; 3422, mounting through hole; 351, sealing sleeve; 352, anti-friction ring; 353, connecting sleeve; 3531, connecting hole; 354, first sealing ring; 355, second sealing ring; 400, frame body; 410, rolling wheel; 420, lifting ring. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In one embodiment, a containment integral pressure test pressurization and depressurization system is provided, including a controller, a detection element, and a pressurization and depressurization device 10. The pressurization and depressurization device 10 is used to communicate with the containment. The controller is communicatively connected to both the detection element and the pressurization and depressurization device 10. The detection element is used to detect the pressurization and depressurization rate at the pressurization and depressurization device 10. Thus, when the containment is pressurized or depressurized through the pressurization and depressurization device 10, the detection element detects the pressurization and depressurization rate at the pressurization and depressurization device 10 in real time and feeds the detection result back to the controller. The controller then automatically controls the pressurization and depressurization device 10 to adjust its opening degree accordingly based on the detection result and a preset set rate value, ensuring that the containment is pressurized or depressurized at a stable rate without manual intervention, thereby improving the safety and working efficiency of the containment integral pressure test pressurization and depressurization system.

[0037] The detection element can be a wind speed sensor, a flow sensor, or other device capable of directly or indirectly detecting the pressurization / depressurization rate. The installation position of the detection element can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, the detection element is installed on the pressurization / depressurization device 10.

[0038] Specifically, in this embodiment, the containment overall pressure test pressurization and depressurization system also includes an isolation valve. The containment, isolation valve, and pressurization and depressurization device 10 are connected in sequence. The controller includes a host computer and a local programmable logic controller (PLC). The controller can communicate with the test component and pressurization and depressurization device 10 via data cable, power cable, Bluetooth, wireless network communication technology, or other means.

[0039] Specifically, in this embodiment, the containment overall pressure test pressurization and depressurization system may further include a display and an alarm connected in communication with the controller. The display is used to show the opening degree of the pressurization and depressurization device 10, the pressurization and depressurization rate, and the pressure reading. The alarm is used for overspeed alarm.

[0040] like Figure 1 and Figure 2 As shown, in one embodiment, a pressurization / depressurization device 10 is provided, including a valve body 100, a valve core 200, and an adjustment module 300. The valve body 100 has an airflow channel 110 and a mounting port 121 communicating with the airflow channel 110. The valve core 200 is located at the mounting port 121 and extends into the airflow channel 110. The adjustment module 300 includes a mounting body 310, a drive mechanism 320, a lead screw 331, a nut 332, and an anti-rotation mechanism 340. The mounting body 310 is sealed at the mounting port 121. The drive mechanism 320 is mounted on the mounting body 310. The lead screw 331 passes through the mounting body 310 along the axial direction of the mounting port 121 and is sealed to the mounting body 310. One end of the lead screw 331 is connected to the drive mechanism 320. The nut 332 is mounted on the other end of the lead screw 331 and connected to the valve core 200. The anti-rotation mechanism 340 is connected to the nut 332 and is used to limit the rotation of the nut 332 relative to the lead screw 331. The drive mechanism 320 is used to drive the lead screw 331 to rotate, so as to drive the nut 332 to move axially along the mounting port 121 and drive the valve core 200 to reciprocate relative to the valve body 100.

[0041] In the above embodiment, the pressurization / depressurization device 10, when in use, is driven by the drive mechanism 320 to rotate the lead screw 331. The nut 332 on the lead screw 331, restricted by the anti-rotation mechanism 340, cannot rotate relative to the lead screw 331, causing the nut 332 to move axially along the lead screw 331. This, in turn, drives the valve core 200 to reciprocate axially relative to the valve body 100 along the mounting port 121, thereby adjusting the opening of the pressurization / depressurization device 10 and achieving the effect of regulating the flow rate and pressurization / depressurization rate. Compared to the manual adjustment method in the prior art, this application uses the drive mechanism 320 to control the rotation of the lead screw 331. The lead screw 331, through the nut 332 and the anti-rotation mechanism 340, drives the valve core 200 to move relative to the valve body 100. This improves the adjustment accuracy and speed of the opening of the pressurization / depressurization device 10, enabling the device to maintain a stable rate for pressurizing or depressurizing the containment without manual intervention, thus improving the safety and efficiency of the overall containment pressure test pressurization / depressurization system.

[0042] It should be noted that the pressurization / depressurization device 10 can be used for automatic pressurization or automatic depressurization. The maximum flow rate of the pressurization / depressurization device 10 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, when the pressurization / depressurization device 10 is used for automatic pressurization, the maximum flow rate of the pressurization / depressurization device 10 is set to 20000 m³ / h. 3 / h, the inlet pressure of the airflow channel 110 corresponds to 0.75 MPa. When the pressurization and depressurization device 10 is used for automatic depressurization, the maximum flow rate of the pressurization and depressurization device 10 is set to 40000 m³ / h. 3 / h.

[0043] The drive mechanism 320 can be configured as any existing structure capable of driving the lead screw 331 to rotate. Specifically, in this embodiment, the drive mechanism 320 includes a servo motor 321 and a reducer 322 that is driveably connected to the servo motor 321. The reducer 322 is mounted on the mounting body 310 and is driveably connected to the lead screw 331. The lead screw 331 is configured as a ball screw 331, with an effective precision stroke of 0.525 mm and a flow control accuracy of up to 460 Nm. 3 The pressure-relief rate of the pressure-relief device 10 is adjustable with an accuracy of ±10 mbar / h. The adjustment time for the pressure-relief rate of the pressure-relief device 10 to reach the set rate value is no more than 3 minutes, which is a significant improvement compared to the existing manual adjustment time of tens of minutes.

[0044] In this specific embodiment, the valve core 200 has a tapered end that passes through the mounting port 121 and extends into the airflow channel 110. The anti-rotation mechanism 340 can be fixedly connected to the nut 332. The anti-rotation mechanism 340 is circumferentially limited to the mounting body 310 along the lead screw 331 and is axially movable to the mounting body 310 along the lead screw 331. In other embodiments, the anti-rotation mechanism 340 can also be fixed to the mounting body 310. The anti-rotation mechanism 340 is circumferentially limited to the nut 332 along the lead screw 331 and is axially movable to the nut 332 along the lead screw 331.

[0045] like Figure 2 , Figure 3 and Figure 4 As shown, in one embodiment, the adjustment module 300 further includes a connecting sleeve 353. The connecting sleeve 353 is sleeved on the lead screw 331 and located on the side of the nut 332 away from the valve core 200. One end of the connecting sleeve 353 is fixedly connected to the nut 332, and the other end of the connecting sleeve 353 is connected to the anti-rotation mechanism 340. Thus, the anti-rotation mechanism 340 is connected to the nut 332 through the connecting sleeve 353, so as to facilitate the adjustment of the position of the anti-rotation mechanism 340 relative to the nut 332 and improve the assembly convenience of the pressurization and depressurization device 10.

[0046] like Figure 2 , Figure 5 and Figure 6 As shown, further, a limiting hole 314 is provided on the outer side wall of the end of the mounting body 310 away from the valve body 100. The anti-rotation mechanism 340 includes a locking member 341 and a sliding sleeve 342. The sliding sleeve 342 is sleeved on the connecting sleeve 353. A limiting portion 3421 is provided on the outer side wall of the sliding sleeve 342. The limiting portion 3421 extends into the limiting hole 314 and is circumferentially limited and engaged with the inner wall of the limiting hole 314 along the lead screw 331, and is axially movable and engaged with the inner wall of the limiting hole 314 along the lead screw 331. The locking member 341 is used to lock the sliding sleeve 342 and the connecting sleeve 353 in a locking engagement. Thus, the sliding sleeve 342 is fixed to the connecting sleeve 353 by the locking member 341, and the limiting part 3421 and the inner wall of the limiting hole 314 are circumferentially limited to restrict the nut 332 from rotating relative to the lead screw 331, so as to ensure that the valve core 200 can move stably and reliably relative to the valve body 100 along the axial direction of the mounting port 121, thereby improving the reliability of the pressure charging and depressurizing device 10.

[0047] The limiting part 3421 can be configured as a limiting post, a limiting block, or other limiting structure. The locking member 341 can be configured as a locking clamp, a locking pin, a locking screw, or other locking structure. The number and installation position of the limiting parts 3421, the number and shape of the limiting holes 314, and the number of locking members 341 can all be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, there are two limiting parts 3421, which are symmetrically arranged on both sides of the sliding sleeve 342 and are integrally formed with the sliding sleeve 342.

[0048] like Figure 5 As shown, optionally, the locking element 341 is a locking screw. The limiting part 3421 is provided with a mounting through hole 3422 extending radially along the sliding sleeve 342. The outer side wall of the connecting sleeve 353 is provided with a connecting hole 3531 corresponding to the mounting through hole 3422. The locking screw passes through the mounting through hole 3422 and is inserted into the connecting hole 3531. In this way, the locking engagement between the sliding sleeve 342 and the connecting sleeve 353 can be controlled or released by tightening or loosening the locking screw, thereby improving the ease of assembly of the pressurization and depressurization device 10. Specifically, when the locking screw is tightened towards the connecting hole 3531, the locking screw is inserted into the connecting hole 3531 to lock the sliding sleeve 342 and the connecting sleeve 353 together. At this time, the limiting part 3421 on the outer wall of the sliding sleeve 342 and the inner wall of the limiting hole 314 are in a circumferential limiting fit along the lead screw 331, so that the sliding sleeve 342, the connecting sleeve 353 which is locked together with the sliding sleeve 342, and the nut 332 which is fixedly connected to the connecting sleeve 353 cannot rotate relative to the lead screw 331, thus achieving locking. Conversely, when the locking screw is loosened away from the connecting hole 3531, the locking screw is removed from the connecting hole 3531 to release the locking fit between the sliding sleeve 342 and the connecting sleeve 353. At this time, the connecting sleeve 353 and the nut 332 which is fixedly connected to the connecting sleeve 353 can rotate relative to the lead screw 331, thus achieving unlocking.

[0049] Specifically, in this embodiment, the locking screw is shaped like a frustum near the connecting sleeve 353 and is configured to engage with the inner wall of the connecting hole 3531 when the locking screw is inserted into the connecting hole 3531. Thus, the hysteresis can be adjusted by adjusting the locking screw, thereby improving the hysteresis accuracy of the pressurization / depressurization device 10.

[0050] like Figure 2 and Figure 3As shown, in one embodiment, the end face of the mounting body 310 near the valve body 100 is provided with a movable cavity 311 communicating with the mounting port 121. The end face of the mounting body 310 away from the valve body 100 is provided with a mounting cavity 313 communicating with the movable cavity 311. The top wall of the movable cavity 311 is provided with a clearance hole 312, and the mounting cavity 313 communicates with the movable cavity 311 through the clearance hole 312. The lead screw 331 passes through the mounting cavity 313, the clearance hole 312 and the movable cavity 311 in sequence, and extends into the airflow channel 110. In this way, the nut 332 and the valve core 200 are at least partially hidden in the movable cavity 311, and are integrated with the lead screw 331, the nut 332, the anti-rotation mechanism 340 and the drive mechanism 320 on the mounting body 310 to form an adjustment module 300. Then the adjustment module 300 is installed on the valve body 100, which improves the convenience of assembling the pressurization and depressurization device 10.

[0051] Specifically, in this embodiment, the connecting sleeve 353 passes through the clearance hole 312. The nut 332 is located inside the movable cavity 311 and is fixedly connected to one end of the connecting sleeve 353 located inside the movable cavity 311. The sliding sleeve 342 is correspondingly sleeved on one end of the connecting sleeve 353 located inside the mounting cavity 313. The limiting hole 314 is located at the end of the mounting body 310 away from the valve body 100 and communicates with the mounting cavity 313. In this way, the anti-rotation mechanism 340 is located outside the airflow path, reducing the impact of airflow on the anti-rotation mechanism 340 and improving the reliability of the pressurization and depressurization device 10.

[0052] like Figure 2 and Figure 4 As shown, optionally, the adjustment module 300 also includes a sealing sleeve 351. The sealing sleeve 351 is disposed on the outer wall of the nut 332, and the valve core 200 is sleeved on the outer wall of the sealing sleeve 351. In this way, the sealing sleeve 351 can increase the sealing performance between the nut 332 and the valve core 200, thereby improving the reliability of the pressurization and depressurization device 10.

[0053] Specifically, in this embodiment, the valve core 200, sealing sleeve 351, nut 332, and connecting sleeve 353 are connected to form an integrated movable adjustment structure. The lead accuracy class of the lead screw 331 is C. The backlash / reverse backlash accuracy class of the reducer 322 is 8 arc minutes. The servo motor 321 drives the movable adjustment structure to reciprocate along the circumference of the mounting port 121 through the reducer 322 and the lead screw 331, without couplings or other intermediate links, thus improving the transmission accuracy of the pressurization and depressurization device 10.

[0054] like Figure 4As shown, optionally, the adjustment module 300 also includes an anti-friction ring 352. The anti-friction ring 352 is sleeved on the outer wall of the valve core 200 and is used to reduce the friction between the valve core 200 and the inner wall of the movable cavity 311. In this way, the anti-friction ring 352 can reduce the friction between the valve core 200 and the inner wall of the movable cavity 311, ensuring that the valve core 200 can move smoothly and steadily along the axial direction of the mounting port 121, thereby improving the reliability of the pressurization and depressurization device 10.

[0055] The number of anti-friction rings 352 can be flexibly adjusted according to actual usage needs. Specifically, in this embodiment, there are two anti-friction rings 352, which are spaced apart along the axial direction of the valve core 200 and are both sleeved on the outer side wall of the valve core 200.

[0056] like Figure 2 and Figure 7 As shown, in one embodiment, the valve body 100 includes a valve body 120 and a valve seat 130. An airflow passage 110 and a mounting port 121 are both located on the valve body 120. The airflow passage 110 has a first inlet / outlet 122, a second inlet / outlet 123, and an airflow cavity 124. The mounting port 121 communicates with the top of the airflow cavity 124. The first inlet / outlet 122 communicates with one side of the airflow cavity 124. The second inlet / outlet 123 communicates with the bottom of the airflow cavity 124. The valve seat 130 is mounted on the bottom of the airflow cavity 124 and connects the airflow cavity 124 and the second inlet / outlet 123. A valve core 200 passes through the valve seat 130 and is controlled by a drive mechanism 320 to move relative to the valve seat 130 to adjust the airflow cross-sectional area between the valve core 200 and the valve seat 130. Thus, when the controller controls the servo motor 321, the reducer 322 drives the lead screw 331 to rotate. The lead screw 331 drives the valve core 200 to move relative to the valve seat 130 through the nut 332 and the anti-rotation mechanism 340, thereby changing the airflow cross-sectional area between the valve core 200 and the valve seat 130, so as to achieve the purpose of regulating the flow rate and regulating the charging and depressurizing rate.

[0057] like Figure 2 and Figure 4As shown, optionally, the mounting body 310 is provided with a movable cavity 311 communicating with the airflow channel 110. The adjustment module 300 also includes a first sealing ring 354 and a second sealing ring 355. The first sealing ring 354 and the second sealing ring 355 are spaced apart along the axial direction of the valve core 200 on the outer side wall of the valve core 200, and respectively seal against the inner side wall of the movable cavity 311 and the inner side wall of the valve seat 130. Thus, when air enters through the first inlet / outlet 122, the gas acts on the first sealing ring 354 and the second sealing ring 355. Since the first sealing ring 354 and the second sealing ring 355 have the same cross-sectional area, the same pressure, and opposite directions, the force of the gas pressure on the valve core 200 is canceled out, greatly reducing the power of the drive mechanism 320. In addition, the combined sealing design of the first sealing ring 354 and the second sealing ring 355 not only increases the sealing stroke to effectively prevent the valve core 200 from being damaged by impact, but also has a fixed sealing specific pressure to prevent internal leakage and improve the reliability of the pressure charging and depressurizing device 10.

[0058] Specifically, in this embodiment, the adjustment module 300 further includes a third sealing ring, a fourth sealing ring, a fifth sealing ring, a sixth sealing ring, a seventh sealing ring, and an eighth sealing ring. The third sealing ring is installed on the inner wall of the clearance hole 312 and seals against the outer wall of the connecting sleeve 353. The fourth sealing ring is installed on the end face of the connecting sleeve 353 near the nut 332 and seals against the end face of the nut 332. The fourth sealing ring is coaxially arranged with the connecting sleeve 353. There is at least one fifth sealing ring. Each fifth sealing ring is spaced apart along the axial direction of the sealing sleeve 351 and is installed on the inner wall of the sealing sleeve 351. Each fifth sealing ring is used to seal against the outer wall of the nut 332. The sixth sealing ring is installed on the outer wall of the mounting body 310 and seals against the inner wall of the mounting port 121. The seventh sealing ring is installed on the inner wall of the valve core 200 and seals against the outer wall of the nut 332. The eighth sealing ring is fitted onto the outer wall of the valve seat 130 and seals against the bottom of the airflow chamber 124.

[0059] like Figure 8 As shown, in one embodiment, the pressurization / depressurization device 10 further includes a frame body 400, a plurality of rollers 410 mounted on the bottom of the frame body 400, and at least one lifting ring 420 mounted on the top of the frame body 400. The valve body 100 is fixedly mounted on the frame body 400. Thus, both the rollers 410 and the lifting ring 420 can improve the ease of assembly between the pressurization / depressurization device 10 and the mounting housing.

[0060] The frame body 400 can be configured as any existing frame structure capable of mounting the valve body 100.

[0061] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0062] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0066] It should also be understood that, in interpreting the connection or positional relationships of components, although not explicitly described, connection and positional relationships are interpreted to include a range of error, which should be within the acceptable deviation range of a specific value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0067] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0068] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A pressure charging and depressurizing device, characterized in that, include: The valve body is provided with an airflow channel and an installation port communicating with the airflow channel; The valve core is located at the mounting port and extends into the airflow channel; The adjustment module includes a mounting body, a drive mechanism, a lead screw, a nut, and an anti-rotation mechanism. The mounting body is sealed at the mounting port, the drive mechanism is mounted on the mounting body, the lead screw passes through the mounting body along the axial direction of the mounting port and is sealed to the mounting body, one end of the lead screw is connected to the drive mechanism, the nut is mounted on the other end of the lead screw and connected to the valve core, and the anti-rotation mechanism is connected to the nut and is used to limit the rotation of the nut relative to the lead screw. The drive mechanism is used to drive the lead screw to rotate, thereby moving the nut along the axial direction of the mounting port and causing the valve core to reciprocate relative to the valve body. The adjustment module also includes a connecting sleeve, which is sleeved on the lead screw and located on the side of the nut away from the valve core. One end of the connecting sleeve is fixedly connected to the nut, and the other end of the connecting sleeve is connected to the anti-rotation mechanism. The outer side wall of the mounting body away from the valve body is provided with a limiting hole. The anti-rotation mechanism includes a locking member and a sliding sleeve. The sliding sleeve is sleeved on the connecting sleeve. The outer side wall of the sliding sleeve is provided with a limiting part. The limiting part extends into the limiting hole and is in circumferential limiting cooperation with the inner wall of the limiting hole along the lead screw and axially moving cooperation with the inner wall of the limiting hole along the lead screw. The locking member is used to lock the sliding sleeve and the connecting sleeve in a locking cooperation. The limiting part is provided with a mounting through hole extending radially along the sliding sleeve, and the outer side wall of the connecting sleeve is provided with a connecting hole corresponding to the mounting through hole. The locking member passes through the mounting through hole and is inserted into the connecting hole. The valve body includes a valve body and a valve seat. The airflow channel and the mounting port are both located on the valve body. The airflow channel has a first inlet and outlet, a second inlet and outlet, and an airflow cavity. The mounting port communicates with the top of the airflow cavity. The first inlet and outlet communicate with one side of the airflow cavity. The second inlet and outlet communicate with the bottom of the airflow cavity. The valve seat is installed at the bottom of the airflow cavity and communicates with the airflow cavity and the second inlet and outlet. The valve core passes through the valve seat and is controlled by the driving mechanism to move relative to the valve seat to adjust the airflow cross-sectional area between the valve core and the valve seat. The mounting body is provided with a movable cavity communicating with the mounting port. The adjustment module further includes a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are sleeved on the outer side wall of the valve core at intervals along the axial direction of the valve core, and respectively seal and cooperate with the inner side wall of the movable cavity and the inner side wall of the valve seat.

2. The pressurization and depressurization device according to claim 1, characterized in that, The locking component is a locking screw, and the end of the locking screw near the connecting sleeve is shaped like a frustum. It is configured to limit the engagement with the inner wall of the connecting hole when the locking screw is inserted into the connecting hole.

3. The pressurization and depressurization device according to claim 1 or 2, characterized in that, The end face of the mounting body near the valve body is provided with a movable cavity communicating with the mounting port. The end face of the mounting body away from the valve body is provided with a mounting cavity communicating with the movable cavity. The top wall of the movable cavity is provided with a clearance hole. The mounting cavity communicates with the movable cavity through the clearance hole. The lead screw passes through the mounting cavity, the clearance hole and the movable cavity in sequence and extends into the airflow channel.

4. The pressurization and depressurization device according to claim 3, characterized in that, The adjustment module also includes a sealing sleeve, which is disposed on the outer side wall of the nut, and the valve core is sleeved on the outer side wall of the sealing sleeve; And / or, the adjustment module further includes an anti-friction ring, which is sleeved on the outer wall of the valve core and used to reduce the friction between the valve core and the inner wall of the movable cavity.

5. A containment integral pressure test pressurization and depressurization system, characterized in that, The device includes a controller, a detection element, and a pressurization / depressurization device as described in any one of claims 1 to 4, wherein the pressurization / depressurization device is used to communicate with the containment, the controller is communicatively connected to both the detection element and the pressurization / depressurization device, and the detection element is used to detect the pressurization / depressurization rate at the pressurization / depressurization device.

Images