Pressure control valve for aircraft ground refueling

Abstract

The utility model relates to the field of control valves, and particularly discloses a pressure control valve for aircraft ground refueling, which comprises a left valve body and a right valve body detachably connected with the left valve body, the right valve body is provided with an inlet for conveying oil products, the left valve body is provided with an outlet, and the right valve body is provided with an inlet for conveying oil products. The inside of the left valve body and the inside of the right valve body are communicated to form a hollow cavity, a valve clack, a valve seat pressing ring and a diaphragm are arranged in the hollow cavity, the valve clack is connected with the diaphragm through a connecting rod, the connecting rod penetrates through the valve seat pressing ring, an oil connection venturi tube connector communicated with the hollow cavity is arranged on the left valve body, and the valve seat pressing ring is connected with the oil connection venturi tube connector. The right valve body is provided with an oil connection venturi joint communicated with the hollow cavity, the right valve body is provided with a gas connection venturi joint communicated with the hollow cavity, the oil connection venturi joint and the gas connection venturi joint are communicated with the same oil storage device, and the gas connection venturi joint and the oil connection venturi joint drive the valve clack to be opened and closed by controlling transverse movement of the diaphragm so as to reduce oil pressure. The oil filling control valve solves the problems that an existing oil filling control valve is complex in structure and high in manufacturing cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to control valve field especially, it is a kind of pressure control valve for airplane ground refueling. BACKGROUND

[0002] In the field of aircraft refueling equipment, airplane ground refueling is a key task, and its purpose is to fill fuel for the aircraft to ensure the normal operation of the aircraft. In this process, pressure control valve and test system need to be used to ensure the stability and accuracy of the refueling pressure. Pressure control valve is an important fluid control equipment, which can control the pressure and flow of fluid by adjusting the valve opening. And test system is a tool for testing and evaluating equipment performance, which can verify the performance and reliability of equipment by simulating various working conditions. In the existing technology, the traditional pressure control valve and test system are usually used for airplane ground refueling. These devices are mainly composed of external frame, airplane pressure refueling connector, airplane refueling static conductive rubber hose, ball valve, flowmeter, metal pipeline and other parts. Through these components, the control and adjustment of refueling pressure can be realized, so as to ensure the safety and efficiency of the refueling process. However, the existing pressure control valve and test system still have some problems and shortcomings in practical application. First of all, the existing pressure control valve structure is complex, the manufacturing cost is high, and it is not easy to maintain and repair, and there is a certain safety hazard, for example, high pressure injection caused by valve failure may cause damage to operators and equipment. SUMMARY

[0003] In view of the above-mentioned deficiencies of the existing clamp, the utility model provides a pressure control valve for airplane ground refueling, which can solve the problems of complex structure and high manufacturing cost of the existing refueling control valve.

[0004] To achieve the above-mentioned purpose, the embodiments of the utility model adopt the following technical solutions:

[0005] A pressure control valve for airplane ground refueling, comprising a left valve body and a right valve body detachably connected with the left valve body, an inlet for conveying oil products is arranged on the right valve body, an outlet is arranged on the left valve body, the left valve body and the right valve body are internally communicated to form a hollow chamber, a valve disc, a valve seat compression ring and a diaphragm are arranged in the hollow chamber, the valve disc is connected with the diaphragm through a connecting rod, the connecting rod penetrates through the valve seat compression ring, an oil connection venturi joint in communication with the hollow chamber is arranged on the left valve body, a gas connection venturi joint in communication with the hollow chamber is arranged on the right valve body, the oil connection venturi joint and the gas connection venturi joint are in communication with the same oil storage device, the gas connection venturi joint and the oil connection venturi joint drive the diaphragm to move transversely to control the pressure of the conveyed oil products through the change of oil pressure of the oil storage device.

[0006] According to one aspect of the utility model, the valve cover is sleeved with a valve cover sleeve.

[0007] According to one aspect of the utility model, the diaphragm is provided with a first diaphragm pressing plate at one end close to the left valve body.

[0008] According to one aspect of the utility model, the diaphragm is provided with a second diaphragm pressing plate at one end close to the right valve body.

[0009] According to one aspect of the utility model, a sealing valve seat is arranged between the valve cover and the valve seat pressing ring.

[0010] According to one aspect of the utility model, one end of the connecting rod is threadedly connected with the valve cover.

[0011] According to one aspect of the utility model, the other end of the connecting rod is threadedly connected with the diaphragm.

[0012] According to one aspect of the utility model, the oil connecting venturi connector comprises a vertical section and a buffer section.

[0013] According to one aspect of the utility model, the buffer section is arranged obliquely with the vertical section.

[0014] According to one aspect of the utility model, a sealing gasket is arranged in the buffer section.

[0015] The utility model has the advantages that: the air connecting venturi connector and the oil connecting venturi connector are driven to move horizontally by the oil pressure change of the oil storage device to control the pressure of the oil to be transported; the oil connecting venturi connector comprises a vertical section and a buffer section, and is designed in two sections, so that the pipe wall is not damaged by the excessively large entering oil pressure. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is the first schematic view of the utility model;

[0019] Figure 3 It is the second schematic view of the utility model.

[0020] 1, left valve body; 2, valve sleeve; 3, sealing valve seat; 4, right valve body; 5, connecting rod; 6, valve seat compression ring; 7, oil connection venturi connector; 71, buffer section; 72, vertical section; 8, sealing gasket; 9, gas connection venturi connector; 10, diaphragm; 11, first diaphragm pressing plate; 12, valve flap; 13, second diaphragm pressing plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Embodiment 1

[0023] A pressure control valve for aircraft ground refueling, comprising a left valve body 1 and a right valve body 4 detachably connected with the left valve body 1, the right valve body 4 being provided with an inlet for conveying oil products, the left valve body 1 being provided with an outlet, the left valve body 1 and the right valve body 4 being internally communicated to form a hollow chamber, the hollow chamber being provided with a valve flap 12, a valve seat compression ring 6 and a diaphragm 10, the valve flap 12 being connected with the diaphragm 10 through a connecting rod 5, the connecting rod 5 penetrating through the valve seat compression ring 6, the left valve body 1 being provided with an oil connection venturi connector 7 communicated with the hollow chamber, the right valve body 4 being provided with a gas connection venturi connector 9 communicated with the hollow chamber, the oil connection venturi connector 7 and the gas connection venturi connector 9 being communicated with the same oil storage device, the gas connection venturi connector 9 and the oil connection venturi connector 7 driving the diaphragm 10 to move transversely through the oil pressure change of the oil storage device to control the pressure of the conveyed oil products.

[0024] In use, when the incoming oil product is low pressure, the oil connection venturi connector 7 is filled with oil, so that the diaphragm 10 moves to the right to form a seal, and the oil product directly goes out from the outlet (as shown in FIG. 1). Figure 3 When the incoming oil product is too high in pressure, the gas connection venturi connector 9 is filled with gas, which pushes the diaphragm 10 to move to the left, driving the valve flap 12 to close the outlet, and the oil product enters the intermediate hollow chamber to reduce the pressure of the oil product (as shown in FIG. 2). Figure 2

[0025] In actual application, the valve flap 12 is provided with a valve sleeve 2. The valve sleeve 2 improves the sealing performance, so as to seal the outlet or prevent the oil product from entering the hollow chamber.

[0026] In actual application, the diaphragm 10 is provided with a first diaphragm pressing plate 11 close to the left valve body 1. The first diaphragm pressing plate 11 is used for fixing and sealing the diaphragm 10.

[0027] ​In practical application, the diaphragm 10 is provided with a second diaphragm pressing plate 13 near one end of the right valve body 4. The second diaphragm pressing plate 13 is used for fixing and sealing the diaphragm 10.

[0028] The two sides of the second diaphragm pressing plate 13 are stepped, and the shorter side is in contact with the diaphragm. The stepped design makes the second diaphragm pressing plate 13 more convenient to install and disassemble. The operator can more easily find and fix the position of the back diaphragm pressing plate 11, thereby saving the time of installation and disassembly.

[0029] In practical application, the valve disc 12 is provided with a sealing valve seat 3 between the valve seat pressing ring 6. The sealing valve seat 3 is used for supporting and positioning the valve disc 12.

[0030] In practical application, one end of the connecting rod 5 is screwed with the valve disc 12. The leftmost end of the connecting rod 5 is fixed with the valve disc 12 through a fixed nut.

[0031] In practical application, the other end of the connecting rod 5 is screwed with the diaphragm 10. The diaphragm 10 is further fixed, and the stability of the diaphragm 10 when moving horizontally is improved.

[0032] In practical application, the sealing gasket 8 is arranged in the buffer section 71. The sealing gasket 8 prevents the medium from leaking.

[0033] The beneficial effects of the utility model are as follows: the air connection venturi connector 9 and the oil connection venturi connector 7 drive the diaphragm 10 to move horizontally to control the pressure of the transported oil product through the oil pressure change of the oil storage device.

[0034] Embodiment 2:

[0035] A pressure control valve for aircraft ground refueling, comprising a left valve body 1 and a right valve body 4 detachably connected with the left valve body 1, the right valve body 4 is provided with an inlet for transporting oil product, the left valve body 1 is provided with an outlet, the left valve body 1 and the right valve body 4 are internally communicated to form a hollow chamber, the hollow chamber is provided with a valve disc 12, a valve seat pressing ring 6 and a diaphragm 10, the valve disc 12 is connected with the diaphragm 10 through a connecting rod 5, the connecting rod 5 penetrates through the valve seat pressing ring 6, the left valve body 1 is provided with an oil connection venturi connector 7 communicated with the hollow chamber, the right valve body 4 is provided with an air connection venturi connector 9 communicated with the hollow chamber, the oil connection venturi connector 7 and the air connection venturi connector 9 are communicated with the same oil storage device, the air connection venturi connector 9 and the oil connection venturi connector 7 drive the diaphragm 10 to move horizontally to control the pressure of the transported oil product through the oil pressure change of the oil storage device, the oil connection venturi connector 7 comprises a vertical section 72 and a buffer section 71, and the buffer section 71 is arranged obliquely with the vertical section 72. In order to avoid that the entering oil pressure is too large to damage the pipe wall of the oil connection venturi connector 7, the two-section design is adopted to buffer the impact of the oil entering the oil connection venturi connector 7.

[0036] In practical application, the sealing gasket 8 is arranged in the buffer section 71. The sealing gasket 8 prevents the medium from leaking.

[0037] In use, when the oil pressure is low, the oil enters the oil connection venturi joint 7, and the diaphragm 10 moves to the right to form a seal, and the oil directly exits from the outlet (as shown in Figure 3 When the oil pressure is too high, the gas enters the gas connection venturi joint 9, and the diaphragm 10 is pushed to move to the left, and the valve disc 12 is driven to close the outlet, and the oil enters the hollow chamber in the middle to reduce the oil pressure (as shown in Figure 2

[0038] In practical application, the valve disc sleeve 2 is arranged on the valve disc 12. The valve disc sleeve 2 improves the sealing performance, thereby sealing the outlet or preventing the oil from entering the hollow chamber.

[0039] In practical application, the first diaphragm pressing plate 11 is arranged on the left end of the diaphragm close to the left valve body 1. The first diaphragm pressing plate 11 is used to fix and seal the diaphragm 10.

[0040] In practical application, the second diaphragm pressing plate 13 is arranged on the right end of the diaphragm close to the right valve body 4. The first diaphragm pressing plate 11 is used to fix and seal the diaphragm 10.

[0041] The two sides of the second diaphragm pressing plate 13 are stepped, and the shorter side is in contact with the diaphragm. The stepped design makes the second diaphragm pressing plate 13 more convenient to install and disassemble. The operator can more easily find and fix the position of the back diaphragm pressing plate 11, thereby saving the installation and disassembly time.

[0042] In practical application, the sealing valve seat 3 is arranged between the valve disc 12 and the valve seat pressing ring 6. The sealing valve seat 3 is used to support and position the valve disc 12.

[0043] In practical application, one end of the connecting rod 5 is threadedly connected with the valve disc 12. The leftmost end of the connecting rod 5 is fixed with the valve disc 12 through a fixing nut.

[0044] In practical application, the other end of the connecting rod 5 is threadedly connected with the diaphragm 10. The diaphragm 10 is further fixed, and the stability of the diaphragm 10 when moving horizontally is improved.

[0045] The beneficial effects of the utility model are as follows: the gas connection venturi joint 9 and the oil connection venturi joint 7 drive the diaphragm 10 to move horizontally to control the pressure of the oil to be transported through the oil pressure change of the oil storage device; the oil connection venturi joint 7 comprises a vertical section 72 and a buffer section 71, and a two-section design is adopted, thereby avoiding that the entering oil pressure is too large to damage the pipe wall.

[0046] ​The above merely illustrates the specific implementation manners of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pressure control valve for aircraft ground refueling, comprising a left valve body (1) and a right valve body (4) detachably connected to the left valve body (1), the right valve body (4) being provided with an inlet for delivering fuel, the left valve body (1) being provided with an outlet, the left valve body (1) and the right valve body (4) being internally connected to form a hollow chamber, characterized in that, The hollow chamber is provided with a valve flap (12), a valve seat pressing ring (6) and a diaphragm (10), the valve flap (12) is connected with the diaphragm (10) through a connecting rod (5), the connecting rod (5) penetrates the valve seat pressing ring (6), the left valve body (1) is provided with an oil connecting venturi joint (7) in communication with the hollow chamber, the right valve body (4) is provided with a gas connecting venturi joint (9) in communication with the hollow chamber, the oil connecting venturi joint (7) and the gas connecting venturi joint (9) communicate with the same oil storage device, the gas connecting venturi joint (9) and the oil connecting venturi joint (7) drive the diaphragm (10) to move transversely to control the pressure of the delivered oil product through the change of oil pressure of the oil storage device.

2. The pressure control valve for ground refueling of an aircraft of claim 1, wherein, The valve flap (12) is sleeved with a valve flap sleeve (2).

3. The pressure control valve for aircraft refueling at ground level according to claim 1, characterized in that, The diaphragm is provided with a first diaphragm pressing plate (11) at one end close to the left valve body (1).

4. The pressure control valve for aircraft refuelling at ground level according to claim 3, characterized in that, The diaphragm is provided with a second diaphragm pressing plate (13) at one end close to the right valve body (4).

5. The pressure control valve for aircraft refueling on the ground according to claim 3, characterized in that, The valve flap (12) and the valve seat pressing ring (6) are provided with a sealing valve seat (3).

6. The pressure control valve for aircraft refueling on the ground according to claim 1, characterized in that, One end of the connecting rod (5) is threadedly connected with the valve flap (12).

7. The pressure control valve for aircraft refuelling at ground level according to claim 6, characterized in that, The other end of the connecting rod (5) is threadedly connected with the diaphragm (10).

8. Pressure control valve for the ground refuelling of aircraft according to any one of claims 1 to 7, characterised in that The oil connecting venturi joint (7) comprises a vertical section (72) and a buffer section (71).

9. The pressure control valve for aircraft refuelling at ground level according to claim 8, characterized in that, The buffer section (71) is inclined to the vertical section (72).

10. The pressure control valve for aircraft refueling at ground level according to claim 8, characterized in that, The buffer section (71) is provided with a sealing gasket (8).

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