Gas distribution device for rapid leakage detection of oil tank

Abstract

The utility model discloses a gas distribution device for rapid leakage detection of an oil tank. The gas distribution device comprises a bottom plate, a gas distribution box attached to the upper surface of the middle of the bottom plate, and a fixing sleeve and a mounting plate which are fixedly connected with the upper side of the left rear end and the upper side of the front end of the bottom plate respectively. The system further comprises an air and helium introduction regulation and control structure arranged on the left outer side of the gas distribution box, wherein the air and helium introduction regulation and control structure comprises a helium steel cylinder, a filter, a suction pump, a stop valve, a breather pipe, a pressure gauge and a control display panel; a mixed sealing structure and an adjustable bearing structure are arranged on the inner side and the rear side of the gas distribution box respectively, and the mixed sealing structure comprises a movable rod, a sealing gasket and a stirring rod. According to the gas distribution device for rapid leakage detection of the oil tank, air and helium can be conveniently introduced, regulated and mixed, ventilation is facilitated, the situation that the health of operators is affected by leaked helium is avoided, the gas distribution box can be conveniently carried and moved, the gas distribution box can be conveniently connected with the oil tank, and therefore the purpose of rapid leakage detection of the oil tank can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rapid leak detection of aviation and aerospace oil tanks, in particular to a gas distribution device used for rapid leak detection of oil tanks. Background Art

[0002] An aircraft fuel tank is a box that can hold a large amount of fuel and provide energy for the aircraft to fly. Therefore, whether the aircraft fuel tank leaks or not is directly related to the flight safety of the aircraft. In order to ensure the quality of the fuel tank, it needs to be leaked.

[0003] However, the existing fuel tank leak detection usually adopts a manual method, which is to fill air into the fuel tank first and detect the internal pressure of the fuel tank. However, there is a problem of inaccurate manual pressure control. Therefore, we propose a gas distribution device for rapid fuel tank leak detection to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a gas distribution device for rapid leak detection of oil tanks, so as to solve the problem that the existing oil tank leak detection proposed in the above background technology usually adopts a manual method, firstly filling air into the oil tank to detect the internal pressure of the oil tank, but there is a problem of inaccurate manual pressure control.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas distribution device for rapid leak detection of an oil tank, comprising: a bottom plate, a gas distribution box arranged in contact with the upper surface of the middle part of the bottom plate, and a fixing sleeve and a mounting plate respectively fixedly connected to the upper side of the left rear end and the upper side of the front end of the bottom plate;

[0006] Also includes:

[0007] An air and helium gas introduction control structure is arranged on the left outer side of the gas distribution box, wherein the air and helium gas introduction control structure includes a helium gas cylinder, a filter, a pump, a stop valve, a vent pipe, a pressure gauge and a control and display panel;

[0008] The inner side and the rear side of the gas distribution box are respectively provided with a mixed sealing structure and an adjustable back-bearing structure, wherein the mixed sealing structure includes a movable rod, a sealing pad and a stirring rod, and the adjustable back-bearing structure includes an upper connecting belt, a lower connecting belt and a limiting plate;

[0009] A fuel tank ventilation structure is arranged on the right side of the lower end of the gas distribution box, wherein the fuel tank ventilation structure includes a pressure relief valve, an air intake pipe and a connector;

[0010] An exhaust fan is fixedly mounted on the inner side of the mounting plate, and a protective plate fixed to the mounting plate by screws is arranged on the front side of the exhaust fan, and the middle parts of the mounting plate and the protective plate are both hollow structures.

[0011] Preferably, the helium cylinder is located on the upper left rear end of the bottom plate, and a fixing sleeve is provided on the outer side of the lower end of the helium cylinder to be nested and fitted therewith, and the filter and the pump connected to the right side of the filter are both located on the upper left front end of the bottom plate;

[0012] The filter is fixedly connected to the base plate via a clamp and screws, and the pump is fixed to the base plate via screws.

[0013] Preferably, a symmetrical stop valve is fixedly connected to the upper left side of the gas distribution box, and a ventilation pipe is connected to the external thread of the stop valve, and the outer ends of the ventilation pipe unit are respectively threadedly connected to the helium cylinder and the pump, and a pressure gauge and a control display panel are respectively embedded and installed on the inner side of the upper right end and the inner side of the right rear end of the gas distribution box.

[0014] Preferably, the movable rod passes through the inner middle part of the air distribution box, and a sealing gasket fixed to the bottom plate is tightly provided on the outer side of the upper end of the movable rod, and a stirring rod fitted to the air distribution box is symmetrically fixed on the outer side of the lower end of the movable rod.

[0015] Preferably, the upper connecting band and the lower connecting band are symmetrically arranged on the rear sides of the upper and lower ends of the air distribution box, respectively, and the outer ends of the upper connecting band and the lower connecting band are both pasted and fixedly connected to the air distribution box, and the upper connecting band and the lower connecting band arranged thereunder are correspondingly arranged, and the lower end of the upper connecting band is pasted and fixedly connected to the upper end of the lower connecting band by a snap-fit ​​connection.

[0016] Preferably, the pressure relief valve is fixedly installed on the right side of the lower end of the air distribution box, and an air intake pipe and a connector are sequentially arranged on the right side of the pressure relief valve, and both ends of the air intake pipe are respectively connected to the pressure relief valve and the connector by threads.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the gas distribution device for rapid oil tank leak detection is convenient for regulating and mixing the air and helium, is convenient for ventilation, avoids the health of operators affected by the leaked helium, is convenient for carrying the gas distribution box, and is convenient for connecting with the oil tank, so as to achieve the purpose of rapid oil tank leak detection;

[0018] 1. A bottom plate, a gas distribution box, a helium cylinder and a filter are provided. Since the gas distribution box is fitted on the upper middle side of the bottom plate, the left rear end of the gas distribution box is connected to the helium cylinder via a stop valve and a vent pipe, and the left front end of the gas distribution box is connected to a pump via a stop valve and a vent pipe. A filter connected to the pump is installed on the left side of the pump, and a pressure gauge and a control and display panel are embedded on the inner side of the upper right end of the gas distribution box. A movable rod sealed by a sealing gasket runs through the inner middle side of the gas distribution box, and a stirring rod fitted with the gas distribution box is symmetrically fixed on the outer side of the lower end of the movable rod, so it is convenient to adjust and mix the air and helium.

[0019] 2. A base plate, a mounting plate and an exhaust fan are provided. Since the upper front end of the base plate is fixedly connected to the mounting plate with the exhaust fan installed inside, and the front side of the mounting plate is fixedly connected to the protective plate by screws, ventilation is convenient to prevent the health of the operators from being affected by the leakage of helium;

[0020] 3. An air distribution box, an upper connecting belt, a lower connecting belt and a limit plate are provided. The upper connecting belt and the lower connecting belt are respectively fixed to the rear sides of the upper and lower ends of the air distribution box, and the limit plates fixed to the upper connecting belt and the lower connecting belt are snap-fitted. A pressure relief valve is fixedly installed on the right side of the lower end of the air distribution box, and the pressure relief valve is connected to a connector via an intake pipe. Therefore, it is convenient to carry the air distribution box on the back and connect it to the fuel tank, so as to achieve the purpose of quickly detecting leaks in the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front view structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the top view structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the overall cross-section structure of the gas distribution box of the utility model;

[0024] Figure 4 This is a schematic diagram of the rear view structure of the protection plate and the exhaust fan connected to the utility model.

[0025] In the figure: 1. bottom plate; 2. gas distribution box; 3. helium cylinder; 4. fixing sleeve; 5. filter; 6. pump; 7. stop valve; 8. ventilation pipe; 9. pressure gauge; 10. control and display panel; 11. movable rod; 12. sealing gasket; 13. stirring rod; 14. upper connecting belt; 15. lower connecting belt; 16. limit plate; 17. pressure relief valve; 18. air inlet pipe; 19. connector; 20. mounting plate; 21. exhaust fan; 22. protective plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4The utility model provides a technical solution: a gas distribution device for rapid leak detection of oil tanks, comprising a bottom plate 1, a gas distribution box 2, a helium cylinder 3, a fixing sleeve 4, a filter 5, a pump 6, a stop valve 7, a vent pipe 8, a pressure gauge 9, a control and display panel 10, a movable rod 11, a sealing pad 12, a stirring rod 13, an upper connecting belt 14, a lower connecting belt 15, a limit plate 16, a pressure relief valve 17, an air intake pipe 18, a connector 19, a mounting plate 20, an exhaust fan 21 and a protective plate 22. When the gas distribution device for rapid leak detection of oil tanks is used, as Figure 1 and Figure 2 First, the pressure gauge 9 embedded in the right upper front end of the gas distribution box 2 can be controlled to sense the pressure through the control and display panel 10 embedded in the inner side of the right upper rear end of the gas distribution box 2, and then the stop valve 7 fixedly installed on the upper side of the left rear end of the gas distribution box 2 can be controlled through the control and display panel 10 to operate, so that the helium cylinder 3 on the upper side of the left rear end of the bottom plate 1 is nested and fit through the fixed sleeve 4. Under the connection of the ventilation pipe 8 between the helium cylinder 3 and the stop valve 7, helium is introduced into the gas distribution box 2, and the amount of helium introduced can be controlled under the sensing of the pressure gauge 9. After the helium is introduced, the stop valve 7 fixedly installed on the upper side of the left rear end of the gas distribution box 2 can be controlled again. The stop valve 7 installed on the left front end of the gas distribution box 2 is operated to disconnect the connection between the helium cylinder 3 and the gas distribution box 2. Then, the stop valve 7 installed on the upper side of the left front end of the gas distribution box 2 and the filter 5 and the pump 6 fixedly installed on the upper side of the left front end of the bottom plate 1 can be controlled to cooperate with each other to allow the air filtered by the filter 5 to pass into the gas distribution box 2 through the ventilation pipe 8 through the pump 6, and the amount of air introduced can be controlled by the pressure gauge 9. After the air is introduced, the stop valve 7 installed on the upper side of the left front end of the gas distribution box 2 can be controlled again to disconnect the connection between the pump 6 and the gas distribution box 2, and the operation of the filter 5 and the pump 6 can be stopped to complete the regulation of the introduction of air and helium;

[0028] like Figure 1 , Figure 2 and Figure 3, then rotate the movable rod 11 that runs through the gas distribution box 2. Since the outer side of the movable rod 11 is tightly fitted with a sealing gasket 12 that is glued and fixed to the bottom plate 1, and the outer side of the lower end of the movable rod 11 is symmetrically fixed with a stirring rod 13 that is glued to the gas distribution box 2, the rotation of the movable rod 11 facilitates the mixing of air and helium under the sealing of the sealing gasket 12. After the mixing is completed, the threaded connection between the vent pipe 8 and the stop valve 7 can be disconnected, and the gas distribution box 2 can be carried to the oil tank to be inspected for leakage through the upper connecting belt 14 and the lower connecting belt 15 that are glued and fixed to the rear side of the gas distribution box 2. In the process of carrying, the upper connecting belt 14 and the lower connecting belt 15 are glued on the upper connecting belt 14 and the lower connecting belt 15. The fixed limit plate 16 is a snap-fit ​​connection, so the connection between the upper connecting belt 14 and the lower connecting belt 15 can be adjusted to facilitate the back-carrying movement. After the gas distribution box 2 is carried and moved on the fuel tank, the connector 19 threadedly connected to the outer end of the intake pipe 18 can be connected to the fuel tank thread, and then the pressure relief valve 17 fixedly installed on the right side of the lower end of the gas distribution box 2 can be controlled by the control and display panel 10 to operate, so that the air-helium mixed gas in the gas distribution box 2 passes into the fuel tank through the pressure relief valve 17, the intake pipe 18 threadedly connected between the pressure relief valve 17 and the connector 19, and the connector 19. Therefore, by observing the pressure change of the pressure gauge 9, the purpose of quickly detecting leaks in the fuel tank can be achieved;

[0029] like Figure 2 and Figure 4 During the process of helium introduction, regulation and mixing, the exhaust fan 21 installed in the mounting plate 20 can be fixedly connected to the upper side of the front end of the bottom plate 1 for operation. Since the front side of the exhaust fan 21 is provided with a protective plate 22 fixed with screws to the mounting plate 20, the middle parts of the mounting plate 20 and the protective plate 22 are both hollow structures, so it is convenient to carry out suction ventilation, thereby preventing the health of the operators from being affected by the leakage of helium. The above electrical components are all existing technologies and will not be described in detail here.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas distribution device for rapid leak detection of an oil tank, comprising: A base plate (1), an air distribution box (2) fitted on the upper surface of the middle portion of the base plate (1), and a fixing sleeve (4) and a mounting plate (20) respectively fixedly connected to the upper sides of the left rear end and the front end of the base plate (1); It is characterized by further comprising: An air and helium gas introduction control structure is arranged on the left outer side of the gas distribution box (2), wherein the air and helium gas introduction control structure comprises a helium gas cylinder (3), a filter (5), a pump (6), a stop valve (7), a vent pipe (8), a pressure gauge (9) and a control and display panel (10); The inner side and the rear side of the gas distribution box (2) are respectively provided with a mixed sealing structure and an adjustable back-bearing structure, wherein the mixed sealing structure comprises a movable rod (11), a sealing pad (12) and a stirring rod (13), and the adjustable back-bearing structure comprises an upper connecting belt (14), a lower connecting belt (15) and a limiting plate (16); A fuel tank ventilation structure is provided on the right side of the lower end of the gas distribution box (2), wherein the fuel tank ventilation structure includes a pressure relief valve (17), an air intake pipe (18) and a connector (19); An exhaust fan (21) is fixedly mounted on the inner side of the mounting plate (20), and a protective plate (22) fixed to the mounting plate (20) by screws is arranged on the front side of the exhaust fan (21), and the middle parts of the mounting plate (20) and the protective plate (22) are both hollow structures.

2. The gas distribution device for rapid leak detection of an oil tank according to claim 1, characterized in that: The helium cylinder (3) is located on the upper left rear end of the bottom plate (1), and a fixing sleeve (4) is provided on the outer side of the lower end of the helium cylinder (3) to be nested and fitted therewith, and the filter (5) and the pump (6) connected to the right side of the filter (5) are both located on the upper left front end of the bottom plate (1); The filter (5) is fixedly connected to the base plate (1) via a clamp and screws, and the pump (6) is fixed to the base plate (1) via screws.

3. The gas distribution device for rapid leak detection of an oil tank according to claim 1, characterized in that: A symmetrical stop valve (7) is fixedly connected to the upper left side of the gas distribution box (2), and the stop valve (7) is externally threadedly connected to a vent pipe (8), and the outer ends of the vent pipe (8) are respectively threadedly connected to the helium cylinder (3) and the pump (6), and a pressure gauge (9) and a control and display panel (10) are respectively inlaid and installed on the inner side of the upper right end and the inner side of the right rear end of the gas distribution box (2).

4. The gas distribution device for rapid leak detection of an oil tank according to claim 1, characterized in that: The movable rod (11) passes through the inner side of the middle part of the air distribution box (2), and a sealing gasket (12) which is glued and fixed to the bottom plate (1) is tightly fitted on the outer side of the upper end of the movable rod (11), and a stirring rod (13) which is fitted to the air distribution box (2) is symmetrically fixed on the outer side of the lower end of the movable rod (11).

5. The gas distribution device for rapid leak detection of an oil tank according to claim 1, characterized in that: The upper connecting belt (14) and the lower connecting belt (15) are symmetrically arranged at the rear sides of the upper and lower ends of the gas distribution box (2), and the outer ends of the upper connecting belt (14) and the lower connecting belt (15) are both glued and fixedly connected to the gas distribution box (2), and the upper connecting belt (14) and the lower connecting belt (15) arranged thereunder are correspondingly arranged, and the lower end of the upper connecting belt (14) and the limiting plate (16) glued and fixed to the upper end of the lower connecting belt (15) are snap-fittedly connected.

6. The gas distribution device for rapid leak detection of an oil tank according to claim 1, characterized in that: The pressure relief valve (17) is fixedly installed on the right side of the lower end of the gas distribution box (2), and an air intake pipe (18) and a connector (19) are sequentially arranged on the right side of the pressure relief valve (17), and the two ends of the air intake pipe (18) are respectively connected to the pressure relief valve (17) and the connector (19) by threads.

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