CN114408208A - Access type pressure detection and control equipment and method - Google Patents
Access type pressure detection and control equipment and method Download PDFInfo
- Publication number
- CN114408208A CN114408208A CN202111600069.4A CN202111600069A CN114408208A CN 114408208 A CN114408208 A CN 114408208A CN 202111600069 A CN202111600069 A CN 202111600069A CN 114408208 A CN114408208 A CN 114408208A
- Authority
- CN
- China
- Prior art keywords
- air
- pressure
- hand valve
- gas
- pressure gauge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004378 air conditioning Methods 0.000 claims abstract description 41
- 238000012360 testing method Methods 0.000 claims abstract description 26
- 238000009825 accumulation Methods 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 3
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 230000000740 bleeding effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013102 re-test Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides an access type pressure detection and control device and method, which solve the problems that the integrity of an air conditioning system is required to be damaged and the air release force is difficult to control when the pressure of the system is released in the test of the existing air conditioning system. The equipment comprises a shell, a first air hand valve and a second air hand valve which are positioned on the shell, and a first pressure gauge and a second pressure gauge which are positioned in the shell; the shell is also provided with an air inlet, an air outlet and an air outlet; the gas enters the first gas hand valve through the gas inlet and then is discharged from the gas outlet, namely the main pipeline is the gas inlet, the gas hand valve and the gas outlet; a first pressure gauge is connected between the air inlet and the first air hand valve; a second pressure gauge and a second air hand valve are connected between the first air hand valve and the air outlet; the other port of the second air hand valve is communicated with the air outlet.
Description
Technical Field
The invention belongs to the technical field of cold air system tests, and particularly relates to an access type pressure detection and control device and method, which can be used for detecting and regulating and controlling the pressure in a system during an aircraft cold air system test.
Background
Generally, in aircraft repair, air tightness and functionality detection tests are required to be carried out on the cooling system to ensure the reliability of the operation of the cooling system, and the tests require that the pressure of the system is within a certain range, so that the pressure of the system needs to be detected and controlled. The pressure is now provided by inflating the aircraft cooling system using only a ground inflation device, and the pressure within the system is reflected by a pressure gauge on the ground inflation device. The air-conditioning system of the airplane generally comprises a pressure storage bottle (i.e. air-conditioning bottle), a one-way valve, an actuating cylinder and the like, and can be simplified into a pressure storage end and a working end, wherein the pressure storage end and the working end are connected through a through joint, and the one-way valve is arranged between the ground inflation equipment and the pressure storage bottle of the air-conditioning system of the airplane to ensure that the air in the air-conditioning system cannot reversely flow.
Generally, the pipeline of the on-board air conditioning system is directly used in the air conditioning system test, however, the pressure required by the process of each test stage of the air conditioning system is not consistent, the pressure supply control method cannot directly solve the problem that the on-board pressure is greater than the test requirement, and at the moment, the pressure of the air conditioning system is reduced by breaking the integrity of the air conditioning system and disconnecting the air discharge of a connecting joint at a certain position on the machine. However, the air bleeding method cannot accurately control the air bleeding amount, and if the screwing and loosening amount of the joint is small, the air bleeding amount is small, and the air bleeding time is long; if the unscrewing quantity is too large, the high-pressure gas can directly impact and separate the joint, so that the joint is damaged and scrapped, and even the guide pipe flies disorderly to cause other product damage and personnel injury. Meanwhile, when the faults are eliminated and the parts of the working end are replaced, the pressure of the whole air conditioning system needs to be released, so that the air releasing and inflating time is too long, and the maintenance efficiency is too low.
In view of the above, it is desirable to design an apparatus and method for releasing pressure of a cooling system more safely, conveniently and efficiently.
Disclosure of Invention
The invention aims to solve the technical problems that the integrity of an existing air conditioning system needs to be damaged, the air discharging force is difficult to control, and the efficiency of replacing a fault part is low when the existing air conditioning system is tested and cleared, and provides access type pressure detection and control equipment and a method.
In order to achieve the purpose, the technical solution provided by the invention is as follows:
an access type pressure detection and control device is characterized in that: the gas-liquid pressure meter comprises a shell, a first gas hand valve and a second gas hand valve which are positioned on the shell, and a first pressure meter and a second pressure meter which are positioned in the shell;
the shell is also provided with an air inlet, an air outlet and an air outlet;
the gas enters the first gas hand valve through the gas inlet and then is discharged from the gas outlet, namely the main pipeline is the gas inlet, the gas hand valve and the gas outlet;
a first pressure gauge is connected between the air inlet and the first air hand valve;
a second pressure gauge and a second air hand valve are connected between the first air hand valve and the air outlet;
the other port of the second air hand valve is communicated with the air outlet.
The parts and components are connected through a conduit; the air hand valve is equivalent to a switch, the opening of the air hand valve is controlled to control the size of the air displacement, namely, the air hand valve can be adjusted to control the size and speed of the air displacement.
Further, one of the cover panels of the housing may be slid open for ease of maintenance and test reading.
Furthermore, in order to facilitate installation and control and make the structural layout of the whole equipment more reasonable, the first air hand valve and the second air hand valve are arranged on two opposite side plates of the shell;
the air inlet and the air outlet are both arranged on the bottom plate of the shell.
Further, when in use, the air inlet is communicated with a pressure accumulation end of an aircraft cold air system;
the air outlet is communicated with the working end of the aircraft cold air system;
the exhaust port is in communication with the atmosphere.
The invention also provides a method for performing an air tightness test on an aircraft cold air system by adopting the access type pressure detection and control equipment, which is characterized by comprising the following steps:
1) the method comprises the following steps that an access type pressure detection and control device is accessed between a pressure accumulation end and a working end of an airplane cold air system, wherein an air inlet is communicated with the pressure accumulation end, an air outlet is communicated with the working end, and an air outlet is communicated with the atmospheric environment;
2) opening the first air hand valve, closing the second air hand valve, filling compressed air with certain pressure into the air conditioning system of the airplane through ground inflation equipment, and closing the first air hand valve when the readings of the first pressure gauge and the second pressure gauge are the same;
3) observing the indication change of the first pressure gauge and the second pressure gauge, and judging whether the air-cooling system of the airplane leaks air;
if the reading of the first pressure gauge is reduced, searching a gas leakage part, opening the first gas hand valve and the second gas hand valve to release pressure, removing a gas leakage fault and repeating the test in the step 2);
if the reading of the second pressure gauge is reduced, searching for a gas leakage part, opening the second gas hand valve to release the pressure of the working end, removing the fault, and repeating the step 2) to perform the test.
And, adopt the above-mentioned cut-in type pressure to measure and control the method that the apparatus carries on pressure measurement to the air conditioning system of the plane, its special character lies in:
the method comprises the following steps that an access type pressure detection and control device is accessed between a pressure accumulation end and a working end of an airplane cold air system, wherein an air inlet is communicated with the pressure accumulation end, an air outlet is communicated with the working end, and an air outlet is communicated with the atmospheric environment;
the following measurement states are included:
A. opening the first air hand valve, closing the second air hand valve, communicating the pressure accumulation end with the working end, and measuring the pressure of the whole air conditioning system by the first pressure gauge and the second pressure gauge with the same readings;
B. opening the first air hand valve, adjusting the second air hand valve, communicating the pressure of the air-conditioning system with the exhaust port through the second air hand valve to release the pressure, reducing the pressure of the air-conditioning system, and measuring the pressure of the whole air-conditioning system by the first pressure gauge and the second pressure gauge with the same number of readings;
C. and closing the first air hand valve and the second air hand valve, wherein the first air hand valve divides the system into a pressure accumulation end and a working end, the first pressure gauge measures the pressure of the pressure accumulation end, and the second pressure gauge measures the pressure of the working end.
D. And closing the first pneumatic hand valve, adjusting the second pneumatic hand valve, keeping the pressure of the pressure accumulation end unchanged, releasing the pressure of the working end through the second pneumatic hand valve, reducing the pressure, measuring the pressure of the pressure accumulation end by the first pressure gauge, and measuring the pressure of the working end by the second pressure gauge.
The invention has the beneficial effects that:
1. the access type pressure detection and control equipment can separate the pressure of the air inlet end from the pressure of the air outlet end through the first air hand valve, and the first pressure gauge and the second pressure gauge can respectively detect the pressure of the air inlet end and the pressure of the air outlet end, so that the pressure of each part in the system can be detected. Opening the second pneumatic hand valve can release the system pressure; the first air hand valve is closed, and the second air hand valve is opened, so that the function of retaining the pressure of the air inlet end and releasing the pressure of the air outlet end can be realized.
2. The access type pressure detection and control equipment is matched with ground inflation equipment for use, the ground inflation equipment controls the pressure rise in the air conditioning system, and the access type pressure detection and control equipment controls the pressure reduction, one charging and one discharging of the air conditioning system, so that the pressure required by various tests can be conveniently achieved.
3. The invention relates to an access type pressure detection and control device which adopts two pressure meters and two air hand valves. The combination of the two air hand valves of opening and closing realizes the control of the pressure of each part, and the two pressure gauges reflect the real pressure of each part in real time along with the state of the air hand valves.
4. The pressure control and measurement device realizes the control and measurement of the pressure in the air conditioning system, the equipment is connected into the system before the test, the pressure of the air conditioning system is regulated and controlled by the pressure relief function of the equipment without unscrewing the joint, and the problems of inconvenient operation and unsafety caused by unscrewing the joint are solved; compared with the ground inflation equipment for reflecting the pressure of the cold air system, the pressure of the cold air system measured by the access type pressure detection and control equipment is more real and accurate.
5. The access type pressure detection and control device adopts the combined control of the two air hand valves and the separate measurement of the two pressure gauges, thereby realizing the measurement and control of the pressure in the system during the test of the air conditioning system, ensuring that the test pressure meets the technical standard and ensuring the effectiveness and the reliability of the test of the air conditioning system. The pressure relief mode of this equipment when still having improved air conditioning system test for the pressure relief process is more convenient, controllable, and the operation is simpler, safety.
6. The access type pressure detection and control equipment realizes accurate measurement and accurate control of the pressure in the air conditioning system through the pressure gauge and the air hand valve, realizes pressure detection and control in the air conditioning system test, and has the advantages of convenience in disassembly and assembly, simplicity and convenience in operation, reduction in workload, compressed gas saving and the like.
Drawings
FIG. 1 is a first schematic structural diagram of an access pressure detecting and controlling device of the present invention;
FIG. 2 is a schematic structural diagram of an on-type pressure detection and control device II;
FIG. 3 is a schematic diagram of the on-board pressure sensing and control device of the present invention;
FIG. 4 is a schematic diagram of the access pressure sensing and control device connection of the present invention;
the reference numbers are as follows:
the pressure measuring device comprises a cover plate 1, a shell 2, a first air hand valve 3, an air inlet 4, an air outlet 5, a second air hand valve 6, an air outlet 7, a first pressure gauge 8 and a second pressure gauge 9.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
an access type pressure detection and control device comprises a shell, a first pneumatic hand valve, a second pneumatic hand valve, a first pressure gauge, a second pressure gauge and various connectors for connection. The installation mode is shown in figures 1 and 2, and the working principle is shown in figure 3.
The shell is a cuboid, and a cover plate on the shell can be opened in a sliding mode. Each part and each component are connected by a conduit, the main pipeline comprises an air inlet 4, a first air hand valve 3 and an air outlet 5, a first pressure gauge 8 is connected between the air inlet 4 and the first air hand valve 3, a second pressure gauge 9 is connected between the first air hand valve 3 and the air outlet 5, and the other end of the second air hand valve 6 is connected with a conduit to be communicated with the atmosphere. The first air hand valve and the second air hand valve are arranged on two opposite side plates of the shell; the air inlet and the air outlet are both arranged on the bottom plate of the shell.
The air-conditioning system of the airplane generally comprises a pressure storage bottle, a one-way valve, an actuating cylinder and the like, and can be simplified into a pressure storage end and a working end. When the air-conditioning system is used, the equipment is connected between the pressure accumulation end and the working end, the guide pipes connected with the two ends of the straight-through connector are disconnected, the guide pipe from the pressure accumulation end is connected with the air inlet of the equipment, the guide pipe leading to the working end is connected with the air outlet of the equipment, and the air path of the original air-conditioning system is not changed, as shown in fig. 4.
Referring to fig. 4, the following working conditions are provided for connecting the equipment to the cooling system:
opening a first air hand valve c, closing a second air hand valve d, communicating a pressure accumulation end with a working end, and measuring the pressure of the whole system by a first pressure gauge a and a second pressure gauge b, wherein the readings are the same.
And secondly, opening the first pneumatic hand valve c, adjusting the second pneumatic hand valve d, enabling the system pressure to be communicated with the atmosphere through the second pneumatic hand valve d to release the pressure, enabling the system pressure to be reduced, and enabling the first pressure gauge a and the second pressure gauge b to measure the pressure of the whole system and to have the same number.
And thirdly, closing the first air hand valve c and the second air hand valve d, wherein the first air hand valve divides the system into a pressure accumulation end and a working end, the first pressure gauge a measures pressure at the pressure accumulation end, and the second pressure gauge b measures pressure at the working end.
Closing the first air hand valve c, adjusting the second air hand valve d, keeping the pressure at the pressure accumulation end unchanged, releasing the pressure at the working end through the second air hand valve d, reducing the pressure, measuring the pressure at the pressure accumulation end by the first pressure gauge a, and measuring the pressure at the working end by the second pressure gauge b.
When the air-tight test of the air-conditioning system is carried out, firstly, the first air hand valve c is opened, the second air hand valve d is closed, compressed air with certain pressure is injected into the system through the ground inflation equipment, when the pressure in the system is stable and the readings of the first pressure gauge a and the second pressure gauge b are the same, the first air hand valve c is closed, and whether each part leaks air or not is judged by observing the readings of the first pressure gauge a and the second pressure gauge b. If the pressure of the pressure accumulation end is reduced, searching a gas leakage part, opening the first gas hand valve c and the second gas hand valve d to release pressure, removing a gas leakage fault, and repeating the steps to perform a test; if the pressure of the working end is reduced, searching for a gas leakage part, opening a second gas hand valve d to release the pressure of the working end, removing the fault, and repeating the steps for testing.
Use access type pressure detection and controlgear to divide into pressure accumulation end and work end with the system, the benefit lies in that the pressure accumulation end part is few, gas leakage position is easily look for and is got rid of, the work end relates to the pipe, connect, some annex are many, but need not get rid of whole air conditioning system pressure, only need open the pipe of second gas hand valve release work end and the gas in the annex, alright change problem part, whole process "gassing-changing one-tenth-inflation, easy operation is convenient, the displacement is few, only need can reach the experimental requirement to the quantity of gas that air conditioning system supplemendation work end released during retest, adopt this equipment, to same kind of part, the single time of changing one-tenth time is shortened to 5 minutes by half an hour, maintenance efficiency promotes by a wide margin, save time cost and economic cost.
Besides the air tightness test, other functional tests which have requirements on the system pressure can also be measured and controlled by using the equipment.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present disclosure.
Claims (6)
1. An access type pressure detection and control device is characterized in that: the gas-liquid pressure meter comprises a shell, a first gas hand valve and a second gas hand valve which are positioned on the shell, and a first pressure meter and a second pressure meter which are positioned in the shell;
the shell is also provided with an air inlet, an air outlet and an air outlet;
the gas enters the first gas hand valve through the gas inlet and then is discharged from the gas outlet;
a first pressure gauge is connected between the air inlet and the first air hand valve;
a second pressure gauge and a second air hand valve are connected between the first air hand valve and the air outlet;
the other port of the second air hand valve is communicated with the air outlet.
2. The on-coming pressure detection and control device of claim 1, characterized in that:
one of the cover plates of the housing is slidably openable.
3. The on-coming pressure detection and control device according to claim 1 or 2, characterized in that:
the first air hand valve and the second air hand valve are arranged on two opposite side plates of the shell;
the air inlet and the air outlet are both arranged on the bottom plate of the shell.
4. The on-coming pressure detection and control device of claim 3, characterized in that:
the air inlet is communicated with a pressure accumulation end of an aircraft cold air system;
the air outlet is communicated with the working end of the aircraft cold air system;
the exhaust port is in communication with the atmosphere.
5. A method for performing an air-tightness test on an aircraft cold air system by using the on-board pressure detection and control device of any one of claims 1 to 4, comprising the steps of:
1) the method comprises the following steps that an access type pressure detection and control device is accessed between a pressure accumulation end and a working end of an airplane cold air system, wherein an air inlet is communicated with the pressure accumulation end, an air outlet is communicated with the working end, and an air outlet is communicated with the atmospheric environment;
2) opening the first air hand valve, closing the second air hand valve, filling compressed air with certain pressure into the air conditioning system of the airplane through ground inflation equipment, and closing the first air hand valve when the readings of the first pressure gauge and the second pressure gauge are the same;
3) observing the indication change of the first pressure gauge and the second pressure gauge, and judging whether the air-cooling system of the airplane leaks air;
if the reading of the first pressure gauge is reduced, searching a gas leakage part, opening the first gas hand valve and the second gas hand valve to release pressure, removing a gas leakage fault and repeating the test in the step 2);
if the reading of the second pressure gauge is reduced, searching for a gas leakage part, opening the second gas hand valve to release the pressure of the working end, removing the fault, and repeating the step 2) to perform the test.
6. A method of pressure measurement in an aircraft air conditioning system using the on-board pressure sensing and control device of any of claims 1-4, wherein:
the method comprises the following steps that an access type pressure detection and control device is accessed between a pressure accumulation end and a working end of an airplane cold air system, wherein an air inlet is communicated with the pressure accumulation end, an air outlet is communicated with the working end, and an air outlet is communicated with the atmospheric environment;
the following measurement states are included:
A. opening the first air hand valve, closing the second air hand valve, communicating the pressure accumulation end with the working end, and measuring the pressure of the whole air conditioning system by the first pressure gauge and the second pressure gauge with the same readings;
B. opening the first air hand valve, adjusting the second air hand valve, communicating the pressure of the air-conditioning system with the exhaust port through the second air hand valve to release the pressure, reducing the pressure of the air-conditioning system, and measuring the pressure of the whole air-conditioning system by the first pressure gauge and the second pressure gauge with the same number of readings;
C. closing the first air hand valve and closing the second air hand valve, wherein the first air hand valve divides the system into a pressure accumulation end and a working end, the first pressure gauge measures the pressure of the pressure accumulation end, and the second pressure gauge measures the pressure of the working end;
D. and closing the first pneumatic hand valve, adjusting the second pneumatic hand valve, keeping the pressure of the pressure accumulation end unchanged, releasing the pressure of the working end through the second pneumatic hand valve, reducing the pressure, measuring the pressure of the pressure accumulation end by the first pressure gauge, and measuring the pressure of the working end by the second pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600069.4A CN114408208B (en) | 2021-12-24 | 2021-12-24 | Access type pressure detection and control equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111600069.4A CN114408208B (en) | 2021-12-24 | 2021-12-24 | Access type pressure detection and control equipment and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114408208A true CN114408208A (en) | 2022-04-29 |
| CN114408208B CN114408208B (en) | 2024-02-13 |
Family
ID=81270454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111600069.4A Active CN114408208B (en) | 2021-12-24 | 2021-12-24 | Access type pressure detection and control equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114408208B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU789693A1 (en) * | 1978-12-25 | 1980-12-23 | Предприятие П/Я В-2775 | Method of tightness testing of hollow articles |
| US6318155B1 (en) * | 1997-07-25 | 2001-11-20 | Bruce Carr | Pressure testing apparatus |
| US20140041388A1 (en) * | 2012-08-08 | 2014-02-13 | Tronair, Inc. | Aircraft Fuel System Test Unit |
| CN203772508U (en) * | 2014-03-04 | 2014-08-13 | 上海诺地乐通用设备制造有限公司 | Large-scale ventilating device air leakage rate detector |
| CN108627308A (en) * | 2018-06-29 | 2018-10-09 | 杭州固恒能源科技有限公司 | From high-pressure air source to the inflation method of workpiece, air charging system and differential pressure air-leakage detector |
| CN208138529U (en) * | 2018-03-28 | 2018-11-23 | 沈阳航天新光集团有限公司 | A kind of low-pressure gas safety monitoring device |
| CN210071266U (en) * | 2019-07-02 | 2020-02-14 | 芜湖航翼集成设备有限公司 | Two-stage combined decompression aircraft fuel tank air tightness inspection device |
| CN113390581A (en) * | 2021-05-17 | 2021-09-14 | 浙江蓝箭航天空间科技有限公司 | Liquid carrier rocket diaphragm capsule is aerifyd and testing arrangement |
| CN113758658A (en) * | 2021-10-11 | 2021-12-07 | 中国商用飞机有限责任公司 | Airplane pipeline airtightness test device and method |
| US20210387735A1 (en) * | 2020-06-16 | 2021-12-16 | Airbus Operations Sas | Depressurizing system and method for a cabin of an aircraft on the ground from the outer side of the aircraft |
-
2021
- 2021-12-24 CN CN202111600069.4A patent/CN114408208B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU789693A1 (en) * | 1978-12-25 | 1980-12-23 | Предприятие П/Я В-2775 | Method of tightness testing of hollow articles |
| US6318155B1 (en) * | 1997-07-25 | 2001-11-20 | Bruce Carr | Pressure testing apparatus |
| US20140041388A1 (en) * | 2012-08-08 | 2014-02-13 | Tronair, Inc. | Aircraft Fuel System Test Unit |
| CN203772508U (en) * | 2014-03-04 | 2014-08-13 | 上海诺地乐通用设备制造有限公司 | Large-scale ventilating device air leakage rate detector |
| CN208138529U (en) * | 2018-03-28 | 2018-11-23 | 沈阳航天新光集团有限公司 | A kind of low-pressure gas safety monitoring device |
| CN108627308A (en) * | 2018-06-29 | 2018-10-09 | 杭州固恒能源科技有限公司 | From high-pressure air source to the inflation method of workpiece, air charging system and differential pressure air-leakage detector |
| CN210071266U (en) * | 2019-07-02 | 2020-02-14 | 芜湖航翼集成设备有限公司 | Two-stage combined decompression aircraft fuel tank air tightness inspection device |
| US20210387735A1 (en) * | 2020-06-16 | 2021-12-16 | Airbus Operations Sas | Depressurizing system and method for a cabin of an aircraft on the ground from the outer side of the aircraft |
| CN113390581A (en) * | 2021-05-17 | 2021-09-14 | 浙江蓝箭航天空间科技有限公司 | Liquid carrier rocket diaphragm capsule is aerifyd and testing arrangement |
| CN113758658A (en) * | 2021-10-11 | 2021-12-07 | 中国商用飞机有限责任公司 | Airplane pipeline airtightness test device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114408208B (en) | 2024-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109752649A (en) | A kind of density monitor intelligent checking monitoring device and its tonifying Qi method of calibration | |
| CN108760279B (en) | Harsh working condition valve test device capable of monitoring valve torque and sealing | |
| CN202133551U (en) | Airplane fuel accessory performance test system | |
| CN100585359C (en) | Gas pressure regulator test device | |
| CN212539610U (en) | Low-temperature valve test bed | |
| CN203216669U (en) | Pressure checking apparatus | |
| CN203688152U (en) | Novel gas pressure reducer verifying device | |
| CN114408208B (en) | Access type pressure detection and control equipment and method | |
| CN204050762U (en) | Fire product hydraulic pressure testing device and explosion testing arrangement | |
| CN202494561U (en) | Portable safety valve calibrator | |
| CN209055285U (en) | A kind of experimental rig for examining valve high-low pressure to seal | |
| CN204679261U (en) | A kind of reduction valve, pressure governor pilot system | |
| CN111721478A (en) | Air tightness checking system for aircraft | |
| CN206930643U (en) | Sulfur hexafluoride gas spot sampling test device | |
| CN107796574A (en) | A kind of aircraft is airtight to check complex control system and its application method | |
| CN203629805U (en) | Simulated testing device for pressure switch of marine low-speed diesel engine | |
| CN114993573A (en) | One-way valve testing device and testing method | |
| CN114252215A (en) | Aeroengine casing mounting edge sealing performance testing system | |
| CN108760271A (en) | A kind of the safety valve engaging pressure test device and method of simulation actual condition | |
| CN201903429U (en) | Piezometric device of fuel gas micro pressure meter | |
| CN112798083A (en) | Flowmeter compressive strength and leakproofness test device | |
| CN201210104Y (en) | Test apparatus for gas regulator | |
| CN219870201U (en) | Test system of main steam safety valve of high-temperature gas cooled reactor | |
| CN218156837U (en) | Tank car emergency cut-off valve calibration equipment | |
| CN108918131B (en) | Testing device for valve under severe working condition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |