CN219282559U

CN219282559U - Self-checking formula automatic vent valve

Info

Publication number: CN219282559U
Application number: CN202320496891.9U
Authority: CN
Inventors: 岳星龙; 杨文东; 郑现涛; 刘艳立; 王福成; 张建茹
Original assignee: Beijing Keruile Aviation Oil Plants Equipment Co ltd; China Aviation Oil Co ltd Beijing Branch
Current assignee: Beijing Keruile Aviation Oil Plants Equipment Co ltd; China Aviation Oil Co ltd Beijing Branch
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-30
Anticipated expiration: 2033-03-15

Abstract

The utility model discloses a self-checking automatic exhaust valve, belongs to the field of oil navigation equipment, and aims to solve the problem that the automatic exhaust valve is in a normally-closed state and cannot automatically exhaust. Including last valve bonnet, lower valve bonnet, disk seat, movable valve rod and floater, it has the exhaust runner to go up the processing on the valve bonnet, it has the oil feed runner to process on the lower valve bonnet, disk seat and the bottom sealing connection of exhaust runner, the top of movable valve rod is equipped with the flange valve clack, the movable valve rod slides from top to bottom and sets up, the flange valve clack passes through sealed pad and disk seat sealing fit, the bottom of movable valve rod is equipped with the floater, the floater is located the inside of valve bonnet down, surpass the both ends of pipeline respectively with exhaust runner and oil feed runner intercommunication, surpass and be equipped with the ball valve on the pipeline. The overrun pipeline is used for detecting the exhaust function of the automatic exhaust valve, when the pressure of the filter tank reaches the working pressure, a ball valve on the overrun pipeline is opened, and if no aviation kerosene is discharged, the exhaust function is lost; if aviation kerosene is discharged immediately, the exhaust function is good.

Description

Self-checking formula automatic vent valve

Technical Field

The utility model belongs to the field of aviation oil equipment, and particularly relates to a self-checking automatic exhaust valve.

Background

In order to prevent accidents, air is strictly forbidden to enter the oil tank of the aircraft, so that no matter a tank type fuelling vehicle or a pipeline fuelling vehicle is adopted to fuelling the aircraft, an automatic exhaust valve is arranged in a fuelling system and is generally arranged at the high point of a filtering tank of the fuelling system, in the process of pumping aviation kerosene into the filtering tank, the air in the filtering tank is gradually exhausted by the automatic exhaust valve, when the aviation kerosene is filled in the filtering tank and overflows into the automatic exhaust valve, and a floating ball on a floating valve rod of the aviation kerosene enables a valve clack and a valve seat to be sealed, so that the automatic valve closing is realized.

Certain impurities exist in aviation kerosene, the filtering tank is only primary filtering, impurities in aviation kerosene cannot be completely and thoroughly filtered, if the impurities enter the automatic exhaust valve to be clamped at the valve rod, or due to mechanical faults of the automatic exhaust valve, the valve rod cannot slide smoothly, the valve clack is stopped at a certain position, the valve seat cannot be opened or closed, and the automatic exhaust valve is in a normally opened or normally closed state and loses functions.

If the automatic exhaust valve is in a normally open state, after the air in the filter tank is exhausted, aviation kerosene is leaked through an exhaust port of the automatic exhaust valve, and a steam exhaust port of the automatic exhaust valve is generally connected with a peeping device, so that leakage can be easily found; if the automatic exhaust valve is in a normally closed state, the air in the filter tank cannot be intuitively found at present and smoothly discharged out of the oiling system, so that potential safety hazards are formed.

Disclosure of Invention

The utility model aims to provide a self-checking automatic exhaust valve, which solves the problems that the automatic exhaust valve is in a normally-closed state and cannot automatically exhaust, so that potential safety hazards are formed. The technical scheme adopted by the utility model is as follows:

the utility model provides a self-checking formula air relief valve, includes valve bonnet, lower valve bonnet, disk seat, movable valve rod, valve rod support and floater, is equipped with the coupling on the valve bonnet, and it has the exhaust runner to go up processing on the coupling, and the bottom of valve bonnet is equipped with down the coupling, and processing has the oil feed runner on the coupling down, goes up valve bonnet and lower valve bonnet upper and lower sealing connection, the disk seat with the bottom sealing connection of exhaust runner, the valve rod support links to each other with last valve bonnet, and the top of movable valve rod is equipped with the flange valve clack, is equipped with sealed the pad on the up end of flange valve clack, and the movable valve rod slides from top to bottom and sets up on the valve rod support, and the flange valve clack passes through sealed the lower opening sealing fit of sealing pad and disk seat, and the bottom of movable valve rod is equipped with the floater, and the floater is located the inside of valve bonnet down, surpass the both ends of pipeline respectively with exhaust runner with surpass oil feed runner intercommunication, be equipped with the ball valve on the pipeline.

Further, the movable valve rod further comprises a valve rod column and a threaded column which are coaxially connected with the flange valve clack in sequence, a back nut is arranged on the threaded column, a connecting nut is welded on the floating ball, and the threaded column is connected with the connecting nut and locked through the back nut.

Further, the valve rod support is of a disc-shaped structure in a horizontal posture, a valve rod hole is formed in the middle of the valve rod support, the valve rod hole is matched with the valve rod column, and a plurality of vent holes are formed in the valve rod support.

Further, the circumferential level of valve rod support inwards penetrates restriction torsion screw, one side of valve stem post is provided with the plane of stopping rotating, the bottom surface of restriction torsion screw stretches into the valve rod hole and with stopping rotating the plane and near the cooperation.

Further, the upper end face of the flange valve clack is provided with a sinking groove, the sinking groove and the sealing gasket are both in a truncated cone shape, the sealing gasket is embedded in the sinking groove, and the upper end face of the sealing gasket protrudes out of the upper end face of the flange valve clack.

Further, the valve seat comprises a valve nozzle head with external threads on the outer wall and a valve nozzle mounting seat with two groups of symmetrical mounting holes on the bottom.

Further, the valve nozzle head and the valve nozzle mounting seat are of an integrated structure.

Compared with the prior art, the utility model has the beneficial effects that:

1. the overrun pipeline is used for detecting whether the exhaust function of the automatic exhaust valve is good or not, when the pressure of the indication pressure gauge of the filter tank reaches the working pressure, the ball valve on the overrun pipeline is opened, if the automatic exhaust valve does not exhaust air, the air is necessarily compressed and accumulated at the top of the filter tank, after the overrun pipeline becomes a passage, the air can be exhausted by the overrun pipeline by bypassing the inside of the automatic exhaust valve, no aviation kerosene is exhausted at the moment, the exhaust function of the automatic exhaust valve is lost, and the exhaust valve is in a normally-closed state; if the automatic exhaust valve is opened beyond the ball valve on the pipeline, aviation kerosene is discharged immediately in the exhaust flow channel of the automatic exhaust valve, the automatic exhaust valve is thoroughly exhausted, the exhaust function is good, and the potential safety hazard that the automatic exhaust valve is in a normally closed state and can not exhaust is eliminated.

2. If the automatic exhaust valve is found to be in a normally-closed state, a large amount of aviation kerosene is pumped into the filter tank, the valve is opened to temporarily and manually operate the exhaust, the aviation kerosene is found to enter the peeping device communicated with the exhaust runner, namely, the exhaust is finished, the valve is closed to continue oiling work, the automatic exhaust valve can be subsequently maintained, and work stagnation caused by shutdown maintenance is avoided.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a semi-sectional view of the upper bonnet;

FIG. 3 is a semi-sectional view of the lower valve housing;

FIG. 4 is a schematic illustration of the structure of a movable valve stem;

FIG. 5 is a schematic illustration of the structure of a valve stem bracket;

FIG. 6 is a schematic structural view of a valve seat;

fig. 7 is a schematic structural view of the floating ball.

In the figure: 1-upper valve cover, 11-upper pipe joint, 12-exhaust runner, 2-valve seat, 21-valve nozzle head, 22-valve nozzle mounting seat, 221-symmetrical mounting hole, 3-valve rod support, 31-valve rod hole, 32-vent hole, 33-limit torsion screw, 4-movable valve rod, 41-flange valve clack, 411-sinking groove, 42-valve rod column, 421-rotation stopping plane, 43-screw column, 44-sealing gasket, 5-floating ball, 51-connecting nut, 6-lower valve cover, 61-lower pipe joint, 62-oil inlet runner and 7-overrun pipeline.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

The connection mentioned in the utility model is divided into fixed connection and detachable connection, wherein the fixed connection is a conventional fixed connection mode such as folding connection, rivet connection, bonding connection, welding connection and the like, the detachable connection comprises a conventional detachable mode such as bolt connection, buckle connection, pin connection, hinge connection and the like, and when a specific connection mode is not limited, at least one connection mode can be found in the conventional connection mode by default to realize the function, and the person skilled in the art can select the function according to the needs. For example: the fixed connection is welded connection, and the detachable connection is bolted connection.

The present utility model will be described in further detail below with reference to the accompanying drawings, the following examples being illustrative of the present utility model and the present utility model is not limited to the following examples.

Examples: as shown in fig. 1-7, a self-checking automatic exhaust valve comprises an upper valve cover 1, a lower valve cover 6, a valve seat 2, a movable valve rod 4, a valve rod support 3 and a floating ball 5, wherein an upper pipe joint 11 is arranged on the upper valve cover 1, an exhaust runner 12 is machined on the upper pipe joint 11, a lower pipe joint 61 is arranged at the bottom of the lower valve cover 6, an oil inlet runner 62 is machined on the lower pipe joint 61, the upper valve cover 1 and the lower valve cover 6 are in up-and-down sealing connection, the valve seat 2 is in sealing connection with the bottom of the exhaust runner 12, the valve rod support 3 is connected with the upper valve cover 1, a flange valve clack 41 is arranged at the top of the movable valve rod 4, a sealing gasket 44 is arranged on the upper end face of the flange valve clack 41, the movable valve rod 4 is arranged on the valve rod support 3 in a up-and-down sliding manner, the flange valve clack 41 is in sealing fit with the lower opening of the valve seat 2, the bottom of the movable valve rod 4 is provided with the floating ball 5, the floating ball 5 is positioned inside the lower valve cover 6, two ends of an overrun pipeline 7 are respectively communicated with the exhaust runner 12 and the oil inlet runner 62, and the overrun pipeline 7 is provided with a ball valve.

The movable valve rod 4 further comprises a valve rod column 42 and a threaded column 43 which are coaxially connected with the flange valve clack 41 in sequence, a back nut is arranged on the threaded column 43, a connecting nut 51 is welded on the floating ball 5, and the threaded column 43 is connected with the connecting nut 51 and locked through the back nut.

The valve rod support 3 is of a disc-shaped structure in a horizontal posture, a valve rod hole 31 is formed in the middle of the valve rod support 3, the valve rod hole 31 is matched with the valve rod column 42, and a plurality of vent holes 32 are formed in the valve rod support 3.

The circumferential direction of the valve rod bracket 3 horizontally penetrates into the limiting torsion screw 33, one side of the valve rod column 42 is provided with a rotation stopping plane 421, and the bottom end surface of the limiting torsion screw 33 extends into the valve rod hole 31 and is in close fit with the rotation stopping plane 421.

The upper end face of the flange valve clack 41 is provided with a countersink 411, the countersink 411 and the sealing gasket 44 are both in a truncated cone shape, the sealing gasket 44 is embedded in the countersink 411, and the upper end face of the sealing gasket 44 protrudes out of the upper end face of the flange valve clack 41.

The valve seat 2 comprises a valve nozzle head 21 with external threads on the outer wall and a valve nozzle mounting seat 22 with two groups of symmetrical mounting holes 221 on the bottom.

The valve nozzle head 21 and the valve nozzle mounting seat 22 are of an integrated structure.

When the air is discharged completely, aviation kerosene enters the exhaust valve from the oil inlet flow channel 62, the aviation kerosene generates buoyancy effect on the floating ball 5, so that the floating ball 5 floats upwards against the gravity and pushes the movable valve rod 4 supported by the valve rod support 3 to move upwards, the flange valve clack 41 seals the lower opening of the valve seat 2 through the sealing gasket 44, the exhaust valve is in a valve closing state at the moment, the aviation kerosene in the tank to be filtered is discharged outwards, the aviation kerosene liquid level in the exhaust valve is reduced, and when the floating ball 5 and the movable valve rod 4 are stressed to slide downwards again, the exhaust valve is opened again.

The valve nozzle head 21 can be connected on the thread section at the bottom of the exhaust runner 12 by inserting a U-shaped installation tool into any one of the two groups of symmetrical installation holes 221, and an O-shaped sealing ring is arranged between the valve nozzle installation seat 22 and the upper valve cover 1 for sealing.

When the plurality of vent holes 32 are used for exhausting, air smoothly passes through the valve rod bracket 3 and is exhausted out of the exhaust valve through the valve seat 2.

The sealing gasket 44 is in sealing fit with the lower opening of the valve seat 2, and since the sealing gasket 44 is generally made of nitrile oil-resistant rubber or silicone rubber, when the valve is closed, the valve seat 2 can press an indentation on the sealing gasket 44, the bottom end surface of the limiting torsion screw 33 is in abutting fit with the rotation stopping plane 421 for limiting the rotation of the movable valve rod 4, so that the sealing gasket 44 is in sealing fit with the lower opening of the valve seat 2 in a fixed posture, and even if the valve seat is repeatedly pressed on the indentation pressed by the sealing gasket 44 each time, the sealing performance of the exhaust valve can be improved.

Because the bottom end surface of the torsion screw 33 is restricted to be too tightly matched with the rotation stopping plane 421, or because impurities are blocked at the valve rod, the movable valve rod 4 cannot slide down after the valve is closed, and the automatic exhaust valve can be in a normally closed state and cannot exhaust again. The central portion of the gasket 44 arches to seal against the valve seat, which also causes the valve to be normally closed and to lose its venting function.

If the automatic exhaust valve is in a normally closed state, the automatic exhaust valve cannot be intuitively found, and air cannot be smoothly exhausted out of the oiling system, so that potential safety hazards are formed. The air is easy to compress, the vibration is larger when the oil pump works, and whether the air in the filter tank is completely discharged is difficult to see through the change of the indication pressure gauge connected with the filter tank. The overrun pipeline 7 is used for detecting whether the exhaust function of the automatic exhaust valve is good, when the pressure of the indication pressure gauge of the filter tank reaches the working pressure, a ball valve on the overrun pipeline 7 is opened, if the automatic exhaust valve does not exhaust air, the air is necessarily compressed and accumulated at the top of the filter tank, after the overrun pipeline 7 becomes a passage, the air can be exhausted by the overrun pipeline 7 by bypassing the inside of the automatic exhaust valve, no aviation kerosene is exhausted at the moment, the loss of the exhaust function of the automatic exhaust valve is indicated, and the exhaust valve is in a normally-closed state; if aviation kerosene is discharged immediately after the ball valve on the overrun pipeline 7 is opened, the exhaust channel 12 of the automatic exhaust valve indicates that the automatic exhaust valve has thorough exhaust and perfect exhaust function, and the potential safety hazard that the automatic exhaust valve is in a normally closed state and can not exhaust is eliminated.

If the automatic exhaust valve is found to be in a normally closed state, a large amount of aviation kerosene is pumped into the filter tank, the air exhaust can be temporarily operated manually by opening the ball valve on the overrun pipeline 7, the aviation kerosene is found to enter the peeping device communicated with the air exhaust runner 12, that is, the air exhaust is finished, the oil filling work can be continued by closing the ball valve on the overrun pipeline 7, the automatic exhaust valve can be maintained subsequently, and work stagnation caused by shutdown maintenance is avoided.

The above embodiments are only illustrative of the present utility model and do not limit the scope thereof, and those skilled in the art may also make modifications to parts thereof without departing from the spirit of the utility model.

Claims

1. A self-checking formula automatic vent valve, its characterized in that: including last valve bonnet (1), lower valve bonnet (6), disk seat (2), movable valve rod (4), valve rod support (3) and floater (5), upward be equipped with on valve bonnet (1) and go up coupling (11), upward processing has exhaust runner (12) on coupling (11), the bottom of lower valve bonnet (6) is equipped with coupling (61) down, processing has oil feed runner (62) on coupling (61) down, go up valve bonnet (1) and lower valve bonnet (6) and go up sealing connection from top to bottom, disk seat (2) with the bottom sealing connection of exhaust runner (12), valve rod support (3) link to each other with last valve bonnet (1), the top of movable valve rod (4) is equipped with flange valve clack (41), be equipped with on the up end of flange valve clack (41) sealed pad (44), the upper and lower slip setting of movable valve rod (4) is on valve rod support (3), the bottom of movable valve rod (4) is equipped with floater (5) through the sealed cooperation of the lower opening of sealing pad (44) and disk seat (2), inside that floater (5) are located lower valve bonnet (6), two surpass runner (7) respectively with exhaust runner (7).

2. The self-checking automatic exhaust valve according to claim 1, characterized in that: the movable valve rod (4) further comprises a valve rod column (42) and a threaded column (43) which are coaxially connected with the flange valve clack (41) in sequence, a back nut is arranged on the threaded column (43), a connecting nut (51) is welded on the floating ball (5), and the threaded column (43) is connected with the connecting nut (51) and locked through the back nut.

3. A self-checking automatic exhaust valve according to claim 2, characterized in that: the valve rod support (3) is of a disc-shaped structure in a horizontal posture, a valve rod hole (31) is formed in the middle of the valve rod support (3), the valve rod hole (31) is matched with a valve rod column (42), and a plurality of vent holes (32) are formed in the valve rod support (3).

4. A self-checking automatic exhaust valve according to claim 3, characterized in that: the circumference level of valve rod support (3) inwards penetrates restriction torsion screw (33), one side of valve stem post (42) is provided with and ends the round plane (421), the bottom face of restriction torsion screw (33) stretches into valve stem hole (31) and with end round plane (421) near cooperation.

5. The self-checking automatic exhaust valve according to claim 1, characterized in that: the upper end face of the flange valve clack (41) is provided with a sinking groove (411), the sinking groove (411) and the sealing gasket (44) are in a truncated cone shape, the sealing gasket (44) is embedded in the sinking groove (411), and the upper end face of the sealing gasket (44) protrudes out of the upper end face of the flange valve clack (41).

6. A self-checking automatic exhaust valve according to any one of claims 1 to 5, characterized in that: the valve seat (2) comprises a valve nozzle head (21) with external threads arranged on the outer wall and a valve nozzle mounting seat (22) with two groups of symmetrical mounting holes (221) arranged at the bottom.

7. The self-checking automatic exhaust valve according to claim 6, characterized in that: the valve nozzle head (21) and the valve nozzle mounting seat (22) are of an integrated structure.