Checking device for anti-load voltage regulator
By introducing a pressure regulating device and a lifting adjustment frame into the anti-load pressure regulator calibration device, the problems of cumbersome operation and inaccurate testing of traditional calibration equipment are solved, realizing efficient and accurate anti-load pressure regulator testing and meeting the high-precision calibration requirements of the aviation field.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NAVAL AVIATION UNIV
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional load regulator calibration equipment requires frequent weight changes, which is cumbersome, inefficient, costly, and produces inaccurate test data, failing to meet the high-precision calibration requirements of the aerospace industry.
An anti-load pressure regulator calibration device is adopted, including an operating cabinet, a thrust gauge, a lifting and adjusting frame, and a pressure regulating device. The pressure regulating device precisely regulates the high-pressure gas. Combined with the lifting and adjusting frame and push rod assembly, the performance of the anti-load pressure regulator under different overload conditions is simulated. Multi-stage pressure reducing valves and pressure gauges are used to ensure the accuracy of the test.
It achieves efficient and accurate testing of anti-load regulators without the need for frequent weight changes, reducing operational complexity and cost, improving testing efficiency and result reliability, and meeting the high-standard calibration requirements of the aviation industry.
Smart Images
Figure CN224146182U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of anti-load voltage regulator calibration technology, specifically an anti-load voltage regulator calibration device. Background Technology
[0002] In the aviation field, anti-G regulators are critical equipment for ensuring pilot safety, and their reliability is paramount. During flight, especially when encountering complex flight conditions such as high G-forces, anti-G regulators must precisely adjust the pressure to provide necessary anti-G protection for the pilot, preventing dangerous situations such as blackouts and fainting caused by overload, thereby ensuring flight safety.
[0003] The specific working principle of the anti-load voltage regulator is as follows:
[0004] When an aircraft performs maneuvers that generate a positive load factor, pressurized air from the engine's environmental control bleed air inlet is automatically pressurized by the anti-G regulator based on the load factor value before entering the anti-G suit. This pressurized air compresses the pilot's abdomen and lower limbs, preventing a rapid flow of blood to these areas, maintaining normal blood circulation, preventing excessive cerebral anemia, and limiting the displacement and extension of internal organs, thereby increasing the body's tolerance limit to the positive load factor. When the positive load factor exceeds 2g, the counterweight compresses the spring and moves downwards under the action of inertial force. At this point, the counterweight's position creates a channel between its trapezoidal groove and the inlet and outlet pipe joints of the anti-G regulator. Pressurized air enters the tension tube of the pilot's high-altitude compensation suit through this channel. As the load factor increases, the air pressure entering the tension tube also increases, until the maximum load factor reaches 8g. When the positive load factor decreases, the air pressure inside the tension tube decreases accordingly. When the positive load factor is less than 2g, the anti-load pressure regulator does not work, and there is no residual pressure inside the tension tube of the anti-load device.
[0005] Existing equipment for calibrating load regulators typically uses a bracket to fix the load regulator in place and frequently changes different weights to compress the load regulator's counterweight, thus simulating the load regulator's operation under different overload conditions. However, this traditional calibration method has many insurmountable drawbacks.
[0006] On the one hand, because the loading methods of the weights used to adapt to different models of load regulators vary greatly, and the corresponding weight values are different under the same overload, it is difficult to achieve a universal design for the calibration bench when facing the calibration requirements of various models of load regulators. Calibration personnel have to frequently change the appropriate weights and related loading devices for different models of load regulators, which is not only cumbersome to operate, but also greatly reduces calibration efficiency and increases calibration costs.
[0007] On the other hand, the aging of the calibration equipment itself during long-term use also seriously affects the accuracy of the test data. Weights exposed to air for extended periods are highly susceptible to oxidation and corrosion, causing their actual weight to gradually deviate from their nominal weight. Simultaneously, frequent loading, unloading, and use lead to weight wear, further exacerbating weight errors. These factors combine to cause a significant deviation between the actual force applied to the counterweight of the anti-G regulator during simulated aircraft overload and the theoretical value, ultimately resulting in test data that severely deviates from the true value. Inaccurate calibration data may lead to substandard anti-G regulators being mistakenly judged as qualified and put into use. During flight, in the event of high overload conditions, these regulators cannot provide effective anti-G protection for the pilot, posing a significant potential threat to flight safety.
[0008] With the continuous development of aviation technology, aircraft flight performance is constantly improving, and the requirements for flight safety are becoming increasingly stringent. Relevant industry standards have set higher requirements for the performance testing accuracy and reliability of load regulators. Traditional calibration equipment, due to its inherent limitations, is no longer sufficient to meet the high standards required for load regulator calibration in the current aviation field. Utility Model Content
[0009] To address the problems of traditional load regulator calibration equipment, which involves frequently changing different weights to compress the load regulator's counterweight, resulting in cumbersome operation, reduced calibration efficiency, increased calibration costs, and inability to guarantee the accuracy and authenticity of calibration data, this utility model provides a load regulator calibration device.
[0010] This utility model is achieved through the following technical solution:
[0011] An anti-load pressure regulator calibration device includes an operating cabinet and a thrust gauge. The operating cabinet is equipped with an anti-load pressure regulator mounting bracket for positioning the anti-load pressure regulator and a lifting adjustment bracket for vertically adjusting the thrust gauge. The lower working end of the thrust gauge is connected to a push rod assembly that abuts against the counterweight position of the anti-load pressure regulator. The air inlet of the anti-load pressure regulator is connected to a pressure regulating device, and the air outlet of the anti-load pressure regulator is connected to a third pressure gauge.
[0012] A further improvement of this utility model is that the lifting and adjusting frame includes a second mounting plate and a first mounting plate arranged vertically opposite each other. The first mounting plate is positioned and installed on the upper side of the operating cabinet. Two vertically arranged guide rods are positioned and installed between the second mounting plate and the first mounting plate, and a vertically arranged screw is rotatably installed thereon. A moving block that is threadedly engaged with the screw is vertically slidably installed on the two guide rods, and a thrust gauge is positioned and connected to the moving block.
[0013] A further improvement of this utility model is that a crank handle is connected and installed at the upper end of the screw.
[0014] A further improvement of this utility model is that the push rod assembly includes a push rod, the upper end of which is connected to a connecting cylinder threadedly connected to the working end of the thrust gauge, and the lower end of the push rod is threadedly connected to a push block.
[0015] A further improvement of this utility model is that the control cabinet is equipped with a gas storage cylinder connected to the pressure regulating device.
[0016] A further improvement of this utility model is that it also includes an inflation pipe connected between the pressure regulating device and the gas storage cylinder, and an inflation valve and a one-way valve are sequentially provided on the inflation pipe.
[0017] A further improvement of this utility model is that an air filter is provided between the inflation valve and the one-way valve.
[0018] A further improvement of this utility model is that the pressure regulating device includes a first pressure reducing valve and a second pressure reducing valve connected in series, a first pressure gauge is provided between the first pressure reducing valve and the second pressure reducing valve, and a second pressure gauge is provided on the side of the second pressure reducing valve near the anti-load pressure regulator.
[0019] A further improvement of this utility model is that the pressure regulating device is provided with a first connector at one end near the anti-load pressure regulator, and the third pressure gauge is provided with a second connector at one end near the anti-load pressure regulator.
[0020] A further improvement of this utility model is that a buffer bottle is provided between the anti-load pressure regulator and the third pressure gauge.
[0021] As can be seen from the above technical solutions, the beneficial effects of this utility model are:
[0022] After the external high-pressure gas is regulated by a pressure regulating device, it enters the anti-load pressure regulator. The position of the thrust gauge is adjusted by the lifting and adjusting frame, causing the push rod assembly to press down on the counterweight position of the anti-load pressure regulator, and controlling the displayed value of the thrust gauge (i.e., the simulated counterweight pressure value). The control performance of the anti-load pressure regulator is detected by the third pressure gauge at the outlet of the anti-load pressure regulator. This allows for convenient and efficient testing of different anti-load pressure regulators without the need for frequent weight changes to adjust the counterweight, effectively ensuring the accuracy and authenticity of the test, reducing calibration costs, and improving calibration efficiency. The overall structure is simple, easy to use, and highly practical. Attached Figure Description
[0023] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.
[0025] Figure 2 This is a partially enlarged schematic diagram of a specific embodiment of the present utility model.
[0026] Figure 3 This is a schematic diagram illustrating the principle of a specific embodiment of the present invention.
[0027] In the attached diagram: 1. Control cabinet; 11. Display panel; 12. First pressure gauge; 13. Second pressure gauge; 14. Third pressure gauge; 15. First connector; 16. Second connector; 17. First pressure reducing valve; 18. Second pressure reducing valve; 2. Lifting and adjusting frame; 21. First mounting plate; 22. Guide rod; 23. Screw; 24. Second mounting plate; 25. Crank handle; 26. Moving block; 3. Thrust gauge; 4. Push rod assembly; 41. Connecting cylinder; 42. Push rod; 43. Push block; 5. Anti-load pressure regulator mounting bracket; 6. Anti-load pressure regulator; 7. Gas cylinder; 71. Inflation valve; 72. Air filter; 73. Check valve; 8. Buffer bottle. Detailed Implementation
[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0029] like Figure 1-3 As shown, this utility model discloses a load regulator calibration device, including an operating cabinet 1 and a thrust gauge 3. The upper side of the operating cabinet 1 is equipped with a load regulator mounting bracket 5 that can position and install a load regulator 6, and a lifting adjustment bracket 2 that can vertically adjust and install the thrust gauge 3. The lower working end of the thrust gauge 3 is connected to a push rod assembly 4 that can abut (press down) against the counterweight position of the load regulator 6. The air inlet of the load regulator 6 is connected to a pressure regulating device, and the air outlet of the load regulator 6 is connected to a third pressure gauge 14.
[0030] After the external high-pressure gas is regulated by the pressure regulating device, it enters the anti-load pressure regulator 6. The position of the thrust gauge 3 is adjusted by the lifting adjustment frame 2, causing the push rod assembly 4 to press down on the counterweight position of the anti-load pressure regulator 6, and controlling the displayed value of the thrust gauge 3 (i.e., the simulated counterweight pressure value). The control performance of the anti-load pressure regulator 6 is detected by the third pressure gauge 14 at the gas outlet of the anti-load pressure regulator 6. This allows for convenient and efficient testing of different anti-load pressure regulators 6 without the need for frequent weight changes to adjust the counterweight, effectively ensuring the accuracy and authenticity of the test, reducing calibration costs, and improving calibration efficiency. The overall structure is simple, easy to use, and highly practical.
[0031] The control cabinet 1 has a display panel 11 on the upper rear side, which has a forward-facing and upward-sloping operating surface. Various pressure gauges, valves, connectors, etc. are installed on the operating surface.
[0032] The bottom of the control cabinet 1 is equipped with casters for easy movement and flexible use.
[0033] The pressure regulating device includes a first pressure reducing valve 17 and a second pressure reducing valve 18 connected in series. A first pressure gauge 12 is installed between the first and second pressure reducing valves 17 and 18, and a second pressure gauge 13 is installed on the side of the second pressure reducing valve 18 near the anti-G pressure regulator 6. The first pressure reducing valve 17 initially reduces the pressure of the high-pressure gas from the high-pressure gas source, lowering the gas pressure to a certain range. Then, the second pressure reducing valve 18 further finely regulates the pressure, enabling precise control of the gas pressure entering the anti-G pressure regulator 6. This meets the stringent requirements of different anti-G pressure regulators for the inlet pressure, ensuring that the simulated working pressure during calibration more closely matches the actual pressure conditions experienced by the anti-G pressure regulator during flight, thus improving calibration accuracy. The first and second pressure gauges 12 and 13 provide precise display of the pressure regulation, ensuring the stability and reliability of the calibration work. By employing two-stage decompression and dual pressure gauge monitoring, the intake pressure that the anti-G regulator 6 experiences during the calibration process can be ensured to be stable and accurate, simulating a pressure environment that is closer to actual flight conditions. This helps to accurately evaluate the performance of the anti-G regulator 6, avoid deviations in calibration results due to inaccurate intake pressure, effectively guarantee the quality of the anti-G regulator calibration work, and improve the reliability of the calibration results.
[0034] The control cabinet 1 houses a gas cylinder 7 connected to the pressure regulating device. The independent and convenient gas cylinder 7 provides the gas source, avoiding the hassle of frequent external gas supply connections during calibration. It eliminates the need for a complex and potentially unstable external gas supply system, allowing for convenient and readily available gas supply to the pressure regulating device at the calibration site. This significantly improves the efficiency and flexibility of the calibration work. The gas cylinder 7 stores a certain amount of gas, ensuring a continuous and stable gas supply throughout the calibration process. This provides a relatively stable gas input to the pressure regulating device, helping to maintain the stability of the inlet pressure during the calibration of the anti-load pressure regulator, thereby improving the accuracy and reliability of the calibration results. Furthermore, the device is integrated, resulting in a compact structure that reduces the complexity of external connection pipelines and lowers the risk of malfunctions such as gas leaks due to improper pipeline connections. It also facilitates the overall handling and installation of the equipment, improving its practicality and operability.
[0035] It also includes an inflation pipe connecting the pressure regulating device and the gas cylinder 7, with an inflation valve 71 and a one-way valve 73 sequentially installed on the inflation pipe. The inflation pipe and the gas cylinder 7 are connected in parallel, which can realize selective gas supply between the inflation pipe and the gas cylinder 7, provide alternative gas supply, avoid the gas cylinder 7 from being unusable due to failure, and ensure the reliability of use; in addition, gas can be filled into the gas cylinder 7 through the inflation pipe to ensure the continuous and repeated use of the gas cylinder 7.
[0036] Both the inflation valve 71 and the one-way valve 73 are located on the operating surface of the display panel 11.
[0037] An air filter 72 is provided between the inflation valve 71 and the one-way valve 73. The air filter 72 filters and purifies the gas supplied from the outside (to the gas storage cylinder 7 or directly to the anti-load pressure regulator 6) to ensure the cleanliness of the test gas and avoid the influence of impurities in the gas on the test results.
[0038] The pressure regulating device has a first connector 15 at one end near the anti-load pressure regulator 6, and the third pressure gauge 14 has a second connector 16 at one end near the anti-load pressure regulator 6. Both the first connector 15 and the second connector 16 are located on the operating surface of the display stand 11. The anti-load pressure regulator 6 can be quickly connected and installed through the first connector 15 and the second connector 16, ensuring the convenience and efficiency of the testing operation.
[0039] A buffer bottle 8 is installed between the anti-load pressure regulator 6 and the third pressure gauge 14. This effectively buffers instantaneous fluctuations in the gas pressure at the outlet of the anti-load pressure regulator 6. During operation, the outlet pressure of the anti-load pressure regulator may fluctuate momentarily due to minor changes in its internal structure or during calibration. Such fluctuations can lead to unstable readings on the third pressure gauge 14, making accurate readings difficult. The buffer bottle 8 acts as a pressure stabilizer, absorbing these instantaneous pressure shocks and making the gas pressure entering the third pressure gauge 14 more stable. This results in more accurate and reliable readings from the third pressure gauge 14, providing calibration personnel with more precise pressure data. Furthermore, it effectively protects the third pressure gauge 14 from impact damage, improving the accuracy and reliability of the anti-load pressure regulator 6 calibration.
[0040] The lifting and adjusting frame 2 includes a second mounting plate 24 and a first mounting plate 21 arranged vertically opposite each other. The first mounting plate 21 is positioned and installed on the upper side of the operating cabinet 1. Two vertically arranged guide rods 22 are positioned and installed between the second mounting plate 24 and the first mounting plate 21, and a vertically arranged screw 23 is rotatably installed. A moving block 26 that is threadedly engaged with the screw 23 is vertically slidably installed on the two guide rods 22. The thrust gauge 3 is positioned and connected to the moving block 26. The first mounting plate 21 and the second mounting plate 24 are arranged opposite each other, and two guide rods 22 and a screw 23 are positioned between them. The moving block 26, which is threaded with the screw 23 and slides vertically on the guide rod 22, makes the vertical position adjustment of the thrust gauge 3 precise and stable. When the screw 23 is rotated, the moving block 26 moves up and down precisely along the guide rod 22, thereby driving the thrust gauge 3, which is positioned and connected to it, to move synchronously. This allows the push rod assembly 4 to accurately contact the counterweight position of the anti-load regulator 6 and apply different levels of pressure as required, meeting the pressure simulation requirements when calibrating different models of anti-load regulators. It also has a self-locking characteristic to ensure the stability and reliability of the thrust gauge 3 pressing down on the anti-load regulator 6.
[0041] Furthermore, a crank handle 25 is connected and installed at the upper end of the screw 23. The crank handle 25 enables the convenient manual rotation of the screw 23, thereby achieving flexibility in moving the thrust gauge 3 up and down.
[0042] The push rod assembly 4 includes a push rod 42, with a connecting cylinder 41 threadedly connected to the working end of the thrust gauge 3 at the upper end of the push rod 42, and a push block 43 threadedly connected to the lower end of the push rod 42. This allows for easy assembly and disassembly of the push rod assembly 4 and facilitates inspection and maintenance.
[0043] This anti-load pressure regulator calibration device uses a pressure regulating device to regulate the external high-pressure gas before it enters the anti-load pressure regulator 6. The position of the thrust gauge 3 is adjusted via the lifting and adjusting frame 2, causing the push rod assembly 4 to press down on the counterweight position of the anti-load pressure regulator 6. The device also controls the displayed value of the thrust gauge 3 (i.e., the simulated counterweight pressure value). The control performance of the anti-load pressure regulator 6 is detected by the third pressure gauge 14 at the outlet of the anti-load pressure regulator 6. This allows for convenient and efficient testing of different anti-load pressure regulators 6 without the need for frequent weight changes to adjust the counterweight, effectively ensuring the accuracy and authenticity of the test, reducing calibration costs, and improving calibration efficiency. The overall structure is simple, easy to use, and highly practical.
[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. Anti-G Straining Vest checking device comprising an operating cabinet (1) and a thrust meter (3), characterized in that, The control cabinet (1) is equipped with a load regulator mounting bracket (5) that can be used to position the load regulator (6) and a lifting adjustment bracket (2) that can be used to adjust the vertical movement of the thrust gauge (3). The lower working end of the thrust gauge (3) is connected to a push rod assembly (4) that can abut against the counterweight position of the load regulator (6). The air inlet of the load regulator (6) is connected to a pressure regulating device, and the air outlet of the load regulator (6) is connected to a third pressure gauge (14).
2. The load regulator calibration device of claim 1, wherein, The lifting adjustment frame (2) includes a second mounting plate (24) and a first mounting plate (21) arranged opposite each other. The first mounting plate (21) is positioned on the upper side of the operating cabinet (1). Two vertically arranged guide rods (22) are positioned between the second mounting plate (24) and the first mounting plate (21), and a vertically arranged screw rod (23) is rotatably installed. A moving block (26) that is threadedly engaged with the screw rod (23) is vertically slidably installed on the two guide rods (22). The thrust gauge (3) is positioned and connected to the moving block (26).
3. The load regulator verification apparatus of claim 2, wherein A crank handle (25) is connected and installed at the upper end of the screw (23).
4. The load regulator calibration device of claim 1, wherein, The push rod assembly (4) includes a push rod (42), the upper end of which is connected to a connecting cylinder (41) that is threaded to the working end of the thrust gauge (3), and the lower end of which is threaded to a push block (43).
5. The load alleviation regulator verification apparatus of claim 1, wherein, The control cabinet (1) contains a gas storage cylinder (7) connected to the pressure regulating device.
6. The load regulator calibration device of claim 5, wherein, It also includes an inflation pipe connecting the pressure regulating device and the gas cylinder (7), and an inflation valve (71) and a one-way valve (73) are sequentially provided on the inflation pipe.
7. The load regulator calibration device of claim 6, wherein, An air filter (72) is provided between the air filling valve (71) and the one-way valve (73).
8. The load alleviation regulator verification apparatus of claim 1, wherein, The pressure regulating device includes a first pressure reducing valve (17) and a second pressure reducing valve (18) connected in series. A first pressure gauge (12) is provided between the first pressure reducing valve (17) and the second pressure reducing valve (18). A second pressure gauge (13) is provided on the side of the second pressure reducing valve (18) near the anti-load pressure regulator (6).
9. The load alleviation regulator verification apparatus of claim 1, wherein, The pressure regulating device has a first connector (15) at one end near the anti-load pressure regulator (6), and the third pressure gauge (14) has a second connector (16) at one end near the anti-load pressure regulator (6).
10. The load alleviation regulator verification apparatus of claim 1, wherein, A buffer bottle (8) is provided between the anti-load pressure regulator (6) and the third pressure gauge (14).