An integrated board card type pressure precision control system

Abstract

The application relates to an integrated plate-type pressure precision control system and relates to the technical field of atmospheric data testing equipment. The integrated plate-type pressure precision control system comprises a sensor assembly, a control valve assembly, a mouth connecting pipe and a gas path integrated block. The sensor assembly, the control valve assembly and the mouth connecting pipe are all installed on the gas path integrated block. The gas path integrated block is provided with a central gas cavity, a detection gas hole assembly and a control gas hole assembly. The detection gas hole assembly is used for connecting the central gas cavity and the sensor assembly. The control gas hole assembly is used for connecting the central gas cavity, the control valve assembly and the mouth connecting pipe. The mouth connecting pipe is used for connecting with a measured equipment. The control valve assembly is used for controlling the inflation and air extraction of the central gas cavity and is used for controlling the on-off of the central gas cavity and the mouth connecting pipe. The sensor assembly is used for detecting the air pressure value in the central gas cavity. The control valve assembly is used for controlling the air pressure value of the central gas cavity according to the detection result of the sensor assembly. The application has the effect of improving the use flexibility of the atmospheric testing equipment.

Description

Technical Field

[0001] This application relates to the technical field of atmospheric data testing equipment, and in particular to an integrated board-type precision pressure control system. Background Technology

[0002] To ensure the safety of aircraft takeoff, landing, and testing, all types of aircraft are equipped with atmospheric pressure sensing systems. These systems must be tested and calibrated in situ before takeoff and after landing to guarantee flight safety.

[0003] Atmospheric testing equipment is generally used to test the atmospheric pressure sensing system of aircraft. Existing atmospheric testing equipment uses pipes and connectors to connect various air circuit components. Among them, the sensor module and control valve module are set in different positions, which makes the overall weight and volume of atmospheric testing equipment large. It also limits the expansion of the number of channels of atmospheric testing equipment, and has obvious defects such as inconvenience in moving, inconvenience in disassembly and assembly, and limited number of test channels. As a result, the use flexibility of atmospheric testing equipment is poor and it is difficult to meet the current requirements for atmospheric testing equipment. Utility Model Content

[0004] To improve the flexibility of atmospheric testing equipment, this application provides an integrated board-type precision pressure control system.

[0005] This application provides an integrated board-type precision pressure control system, which adopts the following technical solution: An integrated board-type precision pressure control system includes a sensor assembly, a control valve assembly, a nozzle tube, and an air circuit integration block. The sensor assembly, control valve assembly, and nozzle tube are all mounted on the air circuit integration block. The air circuit integration block is provided with a central air chamber, a detection air port assembly, and a control air port assembly. The detection air port assembly is used to connect the central air chamber and the sensor assembly. The control air port assembly is used to connect the central air chamber, the control valve assembly, and the nozzle tube. The nozzle tube is used to connect to the device under test. The control valve assembly is used to control the inflation and deflation of the central air chamber and to control the connection and disconnection between the central air chamber and the nozzle tube. The sensor assembly is used to detect the air pressure value in the central air chamber. The control valve assembly is used to control the air pressure value in the central air chamber based on the detection result of the sensor assembly.

[0006] Optionally, the sensor assembly includes a digital sensor and an analog sensor, and the venting assembly includes a digital vent and an analog vent. The two ends of the digital vent are connected to the digital sensor and the central air chamber, respectively, and the two ends of the analog vent are connected to the analog sensor and the central air chamber, respectively.

[0007] Optionally, the detection vent assembly includes a spare vent, one end of which is connected to the central air chamber, and the other end is connected to a spare connector installed on the air circuit integration block. The spare connector is normally closed.

[0008] Optionally, the control valve assembly includes a switching solenoid valve, an inflation solenoid valve, and a suction solenoid valve. The control vent assembly includes a first vent section and two second vent sections. The first vent section connects to the central air chamber, the switching solenoid valve, and the nozzle tube. One of the second vent sections connects to the central air chamber and the inflation solenoid valve, and is connected to an inflation connector mounted on the air circuit integration block. The inflation connector is used to connect to an external inflation air source. The other second vent section connects to the central air chamber and the suction solenoid valve, and is connected to a suction connector mounted on the air circuit integration block. The suction connector is used to connect to an external suction air source.

[0009] Optionally, the first air vent includes a first connecting hole and a second connecting hole. The two ends of the first connecting hole are connected to the central air chamber and the solenoid valve, respectively, and the two ends of the second connecting hole are connected to the solenoid valve and the nozzle tube, respectively.

[0010] Optionally, the second air vent includes a third connecting hole, a fourth connecting hole, and a fifth connecting hole. One end of the third connecting hole is connected to the central air chamber, and the other end is connected to an inflation solenoid valve or an air extraction solenoid valve. One end of the fourth connecting hole is connected to an inflation solenoid valve or an air extraction solenoid valve, and the other end is connected to the fifth connecting hole. The other end of the fifth connecting hole is connected to an inflation connector or an air extraction connector.

[0011] Optionally, it also includes a venting assembly, which includes an electromagnetic venting valve and a third vent. The electromagnetic venting valve is mounted on the gas circuit integrated block, and the third vent is located on the gas circuit integrated block. The third vent connects the central gas chamber and the electromagnetic venting valve, and is also connected to a first venting connector mounted on the gas circuit integrated block. The electromagnetic venting valve is normally closed.

[0012] Optionally, the third vent section includes a sixth connecting hole, a seventh connecting hole, and an eighth connecting hole. The two ends of the sixth connecting hole are respectively connected to the central air chamber and the electromagnetic vent valve. The two ends of the seventh connecting hole are respectively connected to the electromagnetic vent valve and the eighth connecting hole. The other end of the eighth connecting hole is connected to the first vent connector.

[0013] Optionally, it also includes a venting assembly, which includes a manual venting valve installed on the gas circuit integrated block. The manual venting valve is connected to one end of a first venting hole opened on the gas circuit integrated block. The other end of the first venting hole is connected to a second venting connector installed on the gas circuit integrated block. The other end of the second venting connector is connected to a venting pipe. The venting pipe is connected to a third venting connector installed on the gas circuit integrated block. The other end of the third venting connector is connected to one end of the second venting hole opened on the gas circuit integrated block. The other end of the second venting hole is connected to a second connecting hole. The manual venting valve is normally closed.

[0014] Optionally, the gas circuit integration block is connected to a mounting plate, and the mounting plate has at least one mounting hole.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This application discloses an integrated board-type precision pressure control system, comprising a sensor assembly, a control valve assembly, a nozzle tube, and an air path integration block. The sensor assembly, control valve assembly, and nozzle tube are all mounted on the air path integration block. A detection air port assembly, using a port instead of a tube, integrates the sensor assembly with the central air chamber. Similarly, a control air port assembly, using a port instead of a tube, integrates the control valve assembly and nozzle tube with the central air chamber. This reduces the weight of the entire system, eliminates piping and connectors, and decreases its size, making the system easier to move, disassemble, and expand its channel count, thus improving the overall system's flexibility. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a schematic diagram of the central air chamber. Figure 3 This is a schematic diagram of the backup air vent; Figure 4 This is a schematic diagram of the structure of the first pore section; Figure 5 This is a schematic diagram of the structure of the second pore section; Figure 6 This is a schematic diagram of the third pore section; Figure 7 This is a schematic diagram of the structure of the first vent hole; Figure 8 This is a schematic diagram of the mounting holes.

[0017] Explanation of reference numerals in the attached figures: 1. Sensor assembly; 11. Digital sensor; 12. Analog sensor; 2. Control valve assembly; 21. Switching solenoid valve; 22. Inflation solenoid valve; 23. Suction solenoid valve; 3. Connecting pipe; 31. Dust cap; 4. Air circuit integrated block; 5. Central air chamber; 51. Air chamber blind hole; 52. Sealing cover; 6. Detection air port assembly; 61. Digital air port; 62. Analog air port; 63. Spare air port; 64. Spare connector; 7. Control air port assembly; 71. First air port section; 711. First connecting hole; 712. Second connecting hole; 72. Second air port section; 721. Third connecting hole; 72 2. Fourth connecting hole; 723. Fifth connecting hole; 724. Inflation connector; 725. Air extraction connector; 726. Ball expansion plug; 8. Air release assembly; 81. Electromagnetic air release valve; 82. Third air hole; 821. Sixth connecting hole; 822. Seventh connecting hole; 823. Eighth connecting hole; 824. First air release connector; 83. Manual air release valve; 831. First air release hole; 832. Second air release connector; 833. Air release pipe; 834. Third air release connector; 835. Second air release hole; 9. Mounting plate; 91. Mounting hole; 92. Handle; 93. Mounting slot; 94. Circuit board. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0019] This application discloses an integrated board-type precision pressure control system. (Refer to...) Figure 1 An integrated board-type precision pressure control system includes a sensor assembly 1, a control valve assembly 2, a nozzle tube 3, and an air circuit integration block 4.

[0020] Sensor assembly 1, control valve assembly 2, and nozzle pipe 3 are all mounted on the gas circuit integrated block 4.

[0021] Reference Figure 2 The air circuit integrated block 4 is equipped with a central air chamber 5, a detection air hole assembly 6, and a control air hole assembly 7.

[0022] The detection vent assembly 6 is used to connect the central air chamber 5 and the sensor assembly 1; the control vent assembly 7 is used to connect the central air chamber 5, the control valve assembly 2, and the nozzle tube 3; the nozzle tube 3 is fixed to the air circuit integrated block 4 and is used to connect with the device under test.

[0023] The control valve assembly 2 is used to control the inflation and deflation of the central air chamber 5, and to control the connection and disconnection between the central air chamber 5 and the nozzle pipe 3; the sensor assembly 1 is used to detect the air pressure value in the central air chamber 5, and the control valve assembly 2 is used to control the air pressure value in the central air chamber 5 according to the detection result of the sensor assembly 1.

[0024] In use, the control valve assembly 2 enables the central air chamber 5 to be inflated or deflated. After the central air chamber 5 is inflated, the control valve assembly 2 enables the central air chamber 5 to be connected to the nozzle pipe 3, so that the nozzle pipe 3 can supply air to the device under test. The sensor assembly 1 detects the air pressure value in the central air chamber 5. The control valve assembly 2 controls the inflation and deflating volume of the central air chamber 5 according to the detection result of the sensor assembly 1, so that the nozzle pipe 3 can provide accurate and stable detection air pressure to the device under test. For example, when the air pressure value in the central air chamber 5 is greater than the preset value, the inflation volume of the central air chamber 5 is reduced and the deflating volume of the central air chamber 5 is increased. When the air pressure value in the central air chamber 5 is less than the preset value, the inflation volume of the central air chamber 5 is increased and the deflating volume of the central air chamber 5 is decreased. The inflation and deflating volume of the central air chamber 5 are always dynamically adjusted in real time.

[0025] Since the sensor assembly 1, control valve assembly 2, and nozzle tube 3 are connected by the central air chamber 5, detection air hole assembly 6, and control air hole assembly 7 on the air circuit integration block 4, there is no need to use physical pipes and connectors for air circuit connection, so that physical pipes can be replaced by virtual holes.

[0026] Firstly, the gas path setup is centralized, reducing the space occupied by the gas path in the entire system. Secondly, the virtualization of physical pipes into orifices reduces the space occupied and the weight of the entire system, thus reducing the space required for the gas path and effectively lowering the burden of transporting the entire system. Thirdly, the sensor assembly 1 and control valve assembly 2 can be arranged around the gas path integration block 4, improving the spatial integration of the sensor assembly 1 and control valve assembly 2. Fourthly, replacing pipes with orifices improves the sealing performance of the entire system's gas path, effectively reducing the probability of system leakage. Fifthly, since the system's gas path does not require connectors, the entire system is easy to disassemble, facilitating rapid maintenance. Sixthly, each nozzle pipe 3 is a channel that can independently supply gas to a device under test. Under the condition of reducing the overall system size, multiple systems can be installed on mounting brackets or mounting plates, enabling multi-channel gas supply and facilitating the expansion of the number of channels.

[0027] Based on the above analysis, the integrated plate-type pressure precision control system of this application reduces the space occupied by the entire system, reduces the weight of the entire system, and improves the disassembly of the entire system by replacing pipes with holes, thereby improving the flexibility of the entire system and meeting the current requirements for atmospheric testing equipment.

[0028] Reference Figure 1 and Figure 2In this embodiment, the air circuit integrated block 4 is provided with an air chamber blind hole 51. The opening of the air chamber blind hole 51 is fixed and the sealing cover is provided with a sealing cover 52. The air chamber blind hole 51 and the sealing cover 52 together form a central air chamber 5. A dust cap 31 is connected to the nozzle tube 3 by a steel wire rope. When the nozzle tube 3 is not connected to the device under test, the dust cap 31 is sealed on the nozzle tube 3. On the one hand, it prevents dust from entering the nozzle tube 3, and on the other hand, it can realize the self-test of the air circuit sealing of the entire system.

[0029] Specifically, refer to Figure 2 The sensor assembly 1 includes a digital sensor 11 and an analog sensor 12.

[0030] The detection vent assembly 6 includes a digital vent 61 and an analog vent 62. The two ends of the digital vent 61 are connected to the digital sensor 11 and the central air chamber 5, respectively, and the two ends of the analog vent 62 are connected to the analog sensor 12 and the central air chamber 5, respectively.

[0031] The digital sensor 11 and the analog sensor 12 are both fixedly connected to the air circuit integrated block 4. The digital sensor 11 and the analog sensor 12 are both used to output the air pressure signal in the central air chamber 5 to the host computer to form a dual feedback of analog and digital signals, so that the host computer can perform dual feedback of analog closed loop and digital closed loop on the control valve assembly 2.

[0032] The digital vent 61 enables tubeless communication between the digital sensor 11 and the central air chamber 5, and the analog vent 62 enables tubeless communication between the analog sensor 12 and the central air chamber 5, making it easy to integrate the digital sensor 11 and the analog sensor 12 onto the air circuit integration block 4.

[0033] Furthermore, referring to Figure 3 To improve the flexibility of sensing and detection, the detection vent assembly 6 also includes a spare vent 63. One end of the spare vent 63 is connected to the central air chamber 5, and the other end is connected to a spare connector 64 fixed on the air circuit integration block 4. The spare connector 64 is used to connect the sensor, and the spare connector 64 is an open and closed air circuit connector. Under normal conditions, the spare connector 64 is in the closed state.

[0034] By setting up a backup connector 64, the central air chamber 5 can be connected to a backup air path, enabling rapid repair in case of damage to the digital sensor 11 or the analog sensor 12.

[0035] Specifically, refer to Figure 1 The control valve assembly 2 includes a switching solenoid valve 21, an inflation solenoid valve 22, and an air extraction solenoid valve 23.

[0036] Reference Figure 2 The control vent assembly 7 includes a first vent portion 71 and two second vent portions 72.

[0037] The first air vent 71 connects the central air chamber 5, the solenoid valve 21, and the nozzle tube 3 to achieve communication between the nozzle tube 3 and the central air chamber 5.

[0038] Reference Figure 1 and Figure 2 One of the second air holes 72 connects the central air chamber 5 and the inflation solenoid valve 22, and is connected to an inflation connector 724 installed on the air circuit integration block 4. The inflation connector 724 is used to connect an external inflation air source to realize the inflation operation of the central air chamber 5.

[0039] Another second air port 72 connects the central air chamber 5 and the suction solenoid valve 23, and is connected to a suction connector 725 installed on the air circuit integration block 4. The suction connector 725 is used to connect an external suction air source to realize the suction operation of the central air chamber 5.

[0040] Among them, reference Figure 1 The solenoid valve 21, the inflation solenoid valve 22, and the depressurization solenoid valve 23 are all fixedly connected to the air circuit integrated block 4. The solenoid valve 21, the inflation solenoid valve 22, and the depressurization solenoid valve 23 are all electrically connected to the host computer. The host computer controls the opening and closing of the solenoid valve 21, the inflation solenoid valve 22, and the depressurization solenoid valve 23 and the degree of opening based on the air pressure signals fed back by the digital sensor 11 and the analog sensor 12.

[0041] The first air port 71 allows the switching solenoid valve 21 to be connected to the central air chamber 5 and the nozzle pipe 3 without a pipe, and the second air port 72 allows the inflation solenoid valve 22 or the depressurization solenoid valve 23 to be connected to the central air chamber 5 without a pipe, so that the switching solenoid valve 21, the inflation solenoid valve 22 and the depressurization solenoid valve 23 can all be integrated and installed on the air circuit integration block 4.

[0042] Specifically, refer to Figure 4 The first vent portion 71 includes a first connecting hole 711 and a second connecting hole 712.

[0043] The two ends of the first connecting hole 711 are connected to the central air chamber 5 and the solenoid valve 21 respectively, and the two ends of the second connecting hole 712 are connected to the solenoid valve 21 and the nozzle pipe 3 respectively.

[0044] The first connecting hole 711 and the second connecting hole 712 cooperate to enable the switching solenoid valve 21 to be connected to the air path between the central air chamber 5 and the nozzle pipe 3, so that the switching solenoid valve 21 can control the on / off state of the central air chamber 5 and the nozzle pipe 3.

[0045] Specifically, refer to Figure 5 The second vent portion 72 includes a third connecting hole 721, a fourth connecting hole 722 and a fifth connecting hole 723.

[0046] One end of the third connecting hole 721 is connected to the central air chamber 5, and the other end is connected to the inflation solenoid valve 22 or the suction solenoid valve 23. One end of the fourth connecting hole 722 is connected to the inflation solenoid valve 22 or the suction solenoid valve 23, and the other end is connected to the fifth connecting hole 723. The other end of the fifth connecting hole 723 is connected to the inflation connector 724 or the suction connector 725. The third connecting hole 721, the fourth connecting hole 722 and the fifth connecting hole 723 are arranged in a U-shape.

[0047] In this embodiment, the portion of the gas path integrated block 4 containing the fifth connecting hole 723 protrudes outward from the surface of the gas path integrated block 4 to reduce the weight of the gas path integrated block 4; the end of the fourth connecting hole 722 near the fifth connecting hole 723 extends through to the surface of the gas path integrated block 4 and is sealed with a ball-expanding plug 726 to facilitate the processing of the fourth connecting hole 722.

[0048] The third connecting hole 721, the fourth connecting hole 722, and the fifth connecting hole 723 arranged in a U-shape effectively utilize the space on the air circuit integrated block 4, so that the inflation solenoid valve 22 or the de-inflation solenoid valve 23 can be connected to the air circuit connecting the central air chamber 5 to the external air source, making it easy to control the inflation or de-inflation of the central air chamber 5.

[0049] Reference Figure 6 In order to prevent the control valve assembly 2 from failing to slowly depressurize the device under test in the event of a power failure, the integrated board-type pressure precision control system of this application also includes a venting assembly 8, which includes an electromagnetic venting valve 81 and a third vent 82.

[0050] The electromagnetic vent valve 81 is fixedly connected to the gas circuit integrated block 4. The third vent part 82 is provided on the gas circuit integrated block 4. The third vent part 82 connects the central gas chamber 5 and the electromagnetic vent valve 81, and is also connected to the first vent connector 824 fixedly connected to the gas circuit integrated block 4. The electromagnetic vent valve 81 is normally closed.

[0051] The third vent 82 allows the electromagnetic vent valve 81 to be connected to the central air chamber 5 without a pipe. When the inflation solenoid valve 22 and the depressurization solenoid valve 23 malfunction, the electromagnetic vent valve 81 can control the air pressure of the central air chamber 5 and the device under test. When the malfunction of the inflation solenoid valve 22 and the depressurization solenoid valve 23 can be easily and quickly eliminated, the electromagnetic vent valve 81 can maintain the air pressure of the central air chamber 5 and the device under test so that the test can continue at the current air pressure after the malfunction of the inflation solenoid valve 22 and the depressurization solenoid valve 23 is eliminated. When the malfunction of the inflation solenoid valve 22 and the depressurization solenoid valve 23 is difficult to eliminate quickly, the electromagnetic vent valve 81 can slowly release the air pressure of the central air chamber 5 and the device under test so that the device under test can be safely vented.

[0052] Specifically, refer to Figure 6The third vent portion 82 includes a sixth connecting hole 821, a seventh connecting hole 822, and an eighth connecting hole 823.

[0053] The two ends of the sixth connecting hole 821 are connected to the central air chamber 5 and the electromagnetic vent valve 81, respectively. The two ends of the seventh connecting hole 822 are connected to the electromagnetic vent valve 81 and the eighth connecting hole 823, respectively. The other end of the eighth connecting hole 823 is connected to the first vent connector 824. The sixth connecting hole 821, the seventh connecting hole 822 and the eighth connecting hole 823 are arranged in a U-shape.

[0054] Reference Figure 5 and Figure 6 In this embodiment, the third vent portion 82 and the second vent portion 72 have the same structure, that is: the part of the air passage integrated block 4 where the eighth connecting hole 823 is located also protrudes outward from the surface of the air passage integrated block 4; the end of the seventh connecting hole 822 near the eighth connecting hole 823 also penetrates into the surface of the air passage integrated block 4, and is also sealed with a ball expansion plug 726.

[0055] The sixth connecting hole 821, the seventh connecting hole 822 and the eighth connecting hole 823 arranged in a U-shape effectively utilize the space on the air circuit integrated block 4, so that the electromagnetic venting valve 81 can be connected to the central air chamber 5, making the venting of the central air chamber 5 easier to control.

[0056] Reference Figure 7 In order to meet the venting requirements of different tested devices, the venting assembly 8 also includes a manual venting valve 83 fixed on the gas circuit integration block 4.

[0057] Reference Figure 1 , Figure 4 and Figure 7 The manual vent valve 83 is connected to one end of the first vent hole 831 opened on the gas circuit integrated block 4. The other end of the first vent hole 831 is connected to the second vent connector 832 fixed on the gas circuit integrated block 4. The other end of the second vent connector 832 is connected to the vent pipe 833. The vent pipe 833 is connected to the third vent connector 834 fixed on the gas circuit integrated block 4. The other end of the third vent connector 834 is connected to one end of the second vent hole 835 opened on the gas circuit integrated block 4. The other end of the second vent hole 835 is connected to the second connecting hole 712. The manual vent valve 83 is normally closed.

[0058] Reference Figure 4 In this embodiment, both the second vent connector 832 and the third vent connector 834 are open-closed gas connectors, and in order to improve the air leakage prevention capability of the second connecting hole 712, both the second vent connector 832 and the third vent connector 834 are normally closed.

[0059] When the device under test needs to be manually vented, open the second vent connector 832, the third vent connector 834 and the manual vent valve 83 so that the gas in the device under test can be slowly discharged from the second connecting hole 712, the second vent hole 835, the third vent connector 834, the vent pipe 833, the second vent connector 832 and the first vent hole 831 through the manual vent valve 83.

[0060] Reference Figure 1 and Figure 8 To facilitate the expansion of the number of channels, the gas path integration block 4 is connected to a mounting plate 9. The mounting plate 9 has at least one mounting hole 91. By using bolts through the mounting hole 91, the mounting plate 9 can be fixed to the mounting bracket or mounting support, thereby facilitating multi-channel expansion.

[0061] In this embodiment, the mounting plate 9 has four mounting holes 91; the nozzle tube 3 and the manual vent valve 83 are both fixedly installed on the mounting plate 9; in order to facilitate the removal of the mounting plate 9, two handles 92 are screwed onto the mounting plate 9; two mounting slots 93 are screwed onto the mounting plate 9, and a circuit board 94 is sandwiched between the two mounting slots 93, and the circuit board 94 is screwed onto both mounting slots 93.

[0062] The implementation principle of an integrated board-type precision pressure control system according to an embodiment of this application is as follows: In use, the sensor assembly 1, control valve assembly 2, and nozzle pipe 3 are all installed on the air circuit integrated block 4. The sensor assembly 1 is connected to the central air chamber 5 through the detection air hole assembly 6, and the control valve assembly 2 and nozzle pipe 3 are connected to the central air chamber 5 through the control air hole assembly 7. This realizes the air circuit connection by replacing pipes with holes, allowing the sensor assembly 1 and control valve assembly 2 to be arranged around the air circuit integrated block 4. The pipes and connectors are eliminated, reducing the space occupied by the entire system, facilitating the expansion of the number of channels, improving the disassembly of the entire system, facilitating maintenance, reducing the weight of the entire system, and facilitating the transportation of the entire system, thereby improving the flexibility of the entire system.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An integrated board-type precision pressure control system, characterized in that: The device includes a sensor assembly (1), a control valve assembly (2), a nozzle tube (3), and an air circuit integration block (4). The sensor assembly (1), the control valve assembly (2), and the nozzle tube (3) are all mounted on the air circuit integration block (4). The air circuit integration block (4) is provided with a central air chamber (5), a detection air port assembly (6), and a control air port assembly (7). The detection air port assembly (6) is used to connect the central air chamber (5) and the sensor assembly (1). The control air port assembly (7) is used to connect the central air chamber (5), the control valve assembly (2), and the nozzle tube (3). The nozzle tube (3) is used to connect with the device under test. The control valve assembly (2) is used to control the inflation and deflation of the central air chamber (5) and to control the connection and disconnection between the central air chamber (5) and the nozzle tube (3). The sensor assembly (1) is used to detect the air pressure value in the central air chamber (5). The control valve assembly (2) is used to control the air pressure value in the central air chamber (5) according to the detection result of the sensor assembly (1).

2. The integrated board-type precision pressure control system according to claim 1, characterized in that: The sensor assembly (1) includes a digital sensor (11) and an analog sensor (12). The vent detection assembly (6) includes a digital vent (61) and an analog vent (62). The two ends of the digital vent (61) are connected to the digital sensor (11) and the central air chamber (5) respectively. The two ends of the analog vent (62) are connected to the analog sensor (12) and the central air chamber (5) respectively.

3. The integrated board-type precision pressure control system according to claim 1, characterized in that: The detection vent assembly (6) includes a spare vent (63), one end of which is connected to the central air chamber (5), and the other end is connected to a spare connector (64) installed on the air circuit integration block (4). The spare connector (64) is normally closed.

4. The integrated board-type precision pressure control system according to claim 1, characterized in that: The control valve assembly (2) includes a switching solenoid valve (21), an inflation solenoid valve (22), and a suction solenoid valve (23). The control vent assembly (7) includes a first vent section (71) and two second vent sections (72). The first vent section (71) is connected to the central air chamber (5), the switching solenoid valve (21), and the nozzle tube (3). One of the second vent sections (72) is connected to the central air chamber (5) and the inflation solenoid valve (22), and is connected to an inflation connector (724) installed on the air circuit integration block (4). The inflation connector (724) is used to connect to an external inflation air source. The other second vent section (72) is connected to the central air chamber (5) and the suction solenoid valve (23), and is connected to a suction connector (725) installed on the air circuit integration block (4). The suction connector (725) is used to connect to an external suction air source.

5. The integrated board-type precision pressure control system according to claim 4, characterized in that: The first air vent (71) includes a first connecting hole (711) and a second connecting hole (712). The two ends of the first connecting hole (711) are connected to the central air chamber (5) and the solenoid valve (21) respectively, and the two ends of the second connecting hole (712) are connected to the solenoid valve (21) and the nozzle tube (3) respectively.

6. The integrated board-type precision pressure control system according to claim 4, characterized in that: The second air vent (72) includes a third connecting hole (721), a fourth connecting hole (722) and a fifth connecting hole (723). One end of the third connecting hole (721) is connected to the central air chamber (5), and the other end is connected to the inflation solenoid valve (22) or the suction solenoid valve (23). One end of the fourth connecting hole (722) is connected to the inflation solenoid valve (22) or the suction solenoid valve (23), and the other end is connected to the fifth connecting hole (723). The other end of the fifth connecting hole (723) is connected to the inflation connector (724) or the suction connector (725).

7. The integrated board-type precision pressure control system according to claim 1, characterized in that: It also includes a venting assembly (8), which includes an electromagnetic venting valve (81) and a third vent (82). The electromagnetic venting valve (81) is installed on the gas circuit integration block (4), and the third vent (82) is located on the gas circuit integration block (4). The third vent (82) connects the central gas chamber (5) and the electromagnetic venting valve (81), and is also connected to a first venting connector (824) installed on the gas circuit integration block (4). The electromagnetic venting valve (81) is normally closed.

8. The integrated board-type precision pressure control system according to claim 7, characterized in that: The third vent section (82) includes a sixth connecting hole (821), a seventh connecting hole (822) and an eighth connecting hole (823). The two ends of the sixth connecting hole (821) are connected to the central air chamber (5) and the electromagnetic vent valve (81) respectively. The two ends of the seventh connecting hole (822) are connected to the electromagnetic vent valve (81) and the eighth connecting hole (823) respectively. The other end of the eighth connecting hole (823) is connected to the first vent connector (824).

9. The integrated board-type precision pressure control system according to claim 1, characterized in that: It also includes a venting assembly (8), which includes a manual venting valve (83) installed on the gas circuit integration block (4). The manual venting valve (83) is connected to one end of a first venting hole (831) opened on the gas circuit integration block (4). The other end of the first venting hole (831) is connected to a second venting connector (832) installed on the gas circuit integration block (4). The other end of the second venting connector (832) is connected to a venting pipe (833). The venting pipe (833) is connected to a third venting connector (834) installed on the gas circuit integration block (4). The other end of the third venting connector (834) is connected to one end of a second venting hole (835) opened on the gas circuit integration block (4). The other end of the second venting hole (835) is connected to a second connecting hole (712). The manual venting valve (83) is normally closed.

10. The integrated board-type precision pressure control system according to claim 1, characterized in that: The gas circuit integration block (4) is connected to a mounting plate (9), and the mounting plate (9) has at least one mounting hole (91).

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