CN200979005Y

CN200979005Y - Internal tube pressure control valve

Info

Publication number: CN200979005Y
Application number: CN 200620134175
Authority: CN
Inventors: 俞昌祐
Original assignee: BEIJING KERUILE AVIATION OIL EQUIPMENT Co Ltd
Current assignee: BEIJING KERUILE AVIATION OIL EQUIPMENT Co Ltd
Priority date: 2006-10-26
Filing date: 2006-10-26
Publication date: 2007-11-21
Anticipated expiration: 2016-10-26

Abstract

Enclosed is a pressure control valve inside a pipe, wherein a piston is equipped inside a lower valve body, the piston is connected with a film clip on the middle of an upper valve body, an upper inner rip is equipped on the upper valve body, the upper inner rip is equipped with an upper valve gas hole which is connected with a gas controlling double ways valve, a gas chamber is communicated with the valve body gas hole, the valve body inner rib and an inner chamber are equipped on the lower valve body, a lining jacket is equipped with a lower valve body oil hole communicated with the lower valve body inner rib by the oil hole the inner chamber circled by the lining jacket, the film chip and a piston central axis portion, the lower valve body is connected with an oil mouth, a sealing ball held by the spring is equipped between an inner hole of the oil mouth and the lower valve body oil hole, the oil mouth is equipped with an oil passing hole communicating the inner hole on the oil mouth and the lower body oil hole, the outlet of the lower valve body is communicated with the inlet of the upper valve body by gaps between the adjacent lower valve body inner ribs and gaps between the adjacent upper valve body inner ribs, and the spring is held between the film clip and the lining jacket. The valve has simple structure, big flowing quantity, low error rate and reliable performance.

Description

Pipe internal pressure control valve

Technical field

The utility model relates to a kind of valve, and particularly a kind of pipe internal pressure control valve mainly is used in the fuel loading system of all kinds of aircrafts, realizes the safety oiling.

Background technique

At present, fuel tank on all kinds of aircrafts refueled all adopt special fuel loading system, valve all is installed in order to pilot pressure, flow etc. in the fuel loading system, existing control valve is a plunger type, its structure is very complicated, and flow is low, the rate of fault height, adjust trouble, sealing and operational reliability are poor.

Practical content

The purpose of this utility model provide a kind of simple in structure, reliable and stable work, rate of fault low, be convenient to assemble and adjust and pipe internal pressure control valve easy to maintenance, overcome the deficiencies in the prior art.

Pipe internal pressure control valve of the present utility model, comprise interconnective upper valve body and following valve body, inboard at following valve body is furnished with piston mutually, described piston is connected with the diaphragm clamping plate that are positioned at the valve body middle part, diaphragm is fixed on the diaphragm clamping plate, the periphery of diaphragm is clamped in the inboard of upper valve body and following valve body and forms air chamber in upper valve body inside, in upper valve body, be provided with muscle in the upper valve body, gas control two-way valve outside muscle is provided with the upper valve body pore and is located at upper valve body in the upper valve body links to each other, air chamber is communicated with the upper valve body pore, in descending valve body, be provided with muscle and the lining that is positioned at the middle part in the following valve body, lining is provided with following valve body oilhole and the lining on the interior muscle of valve body under the connection of lining oilhole, diaphragm, the formed inner chamber of piston middle spindle part, the following valve body outside is provided with the oil nozzle of band oil nozzle endoporus, be provided with the ball sealer that leans by spring between the inner of oil nozzle endoporus and the following valve body oilhole, on oil nozzle, be provided with the oil permeable hole that is communicated with oil nozzle endoporus and following valve body oilhole, the outlet of following valve body by in the adjacent following valve body between the muscle in gap and the adjacent upper valve body between the muscle gap be connected with the import of upper valve body, be provided with between described diaphragm clamping plate and the lining and lean spring.

Pipe internal pressure control valve of the present utility model, wherein said lining is bowl-shape, its periphery is clamped in the inboard of described upper valve body and following valve body with the periphery of diaphragm, bowl-shape lining mesopore is sleeved on the piston middle spindle part outside, is connected and fixed by the axial piston bolt between the central shaft of described diaphragm clamping plate and piston.

Pipe internal pressure control valve of the present utility model, bolt is connected with the diaphragm inner splint on the wherein said diaphragm clamping plate, and described diaphragm is clipped between diaphragm clamping plate and the diaphragm inner splint.

Pipe internal pressure control valve of the present utility model, the wherein said spring that leans is made up of inner spring and outer spring, each spring all is sleeved on the piston middle spindle part outside, described inner spring one end leans in the groove of diaphragm clamping plate, the other end leans on lining, described outer spring one end leans on the diaphragm inner splint, and the other end leans in the groove of lining.

Pipe internal pressure control valve of the present utility model is equipped with Sealing between between the junction plane of wherein said down valve body and upper valve body, between the inboard of the piston outside and following valve body, outside the lining and between the inboard of following valve body, outside the central shaft of lining mesopore and piston.

Pipe internal pressure valve of the present utility model, owing to utilized diaphragm and the piston that is connected with diaphragm and associated oil control device and two-way Pneumatic valve in this device, make the valve general structure simple, easily make, be easy for installation and maintenance, good control, latus rectum is big in the valve, causes flow big, working flow can reach 4500 liters/minute, the rate of fault that also causes simple in structure is low, and reliability of operation improves, long service life.

Description of drawings

Fig. 1 is the structural representation of the utility model pipe internal pressure control valve embodiment.

Embodiment

As shown in the figure: 1 for taking the following valve body of mouth 29 out of, and 16 for bringing the upper valve body of mouth 30 into, uses fixing bolt 27 fixedly connected between the two.

Inboard at following valve body 1 is furnished with piston 3 mutually, and the periphery of piston 3 is cylindric, matches with the endoporus of following valve body 1 in the outside of cylinder, and is provided with down valve seals 2 sealings.The core of piston 3 is cylindric formation central shaft, and the equally distributed connecting tendon of circumference is arranged between mandrel segment and the outer cylinder therein, and the intermediate portion of adjacent connecting tendon forms passage.

The central axis of piston 3 is fixedly connected with diaphragm clamping plate 9 with axial piston bolt 7, and diaphragm clamping plate 9 are positioned at the central position of upper valve body 16.The middle part of disc diaphragm 15 is fixed between diaphragm clamping plate 9 and the diaphragm inner splint 14, and is fastening with piston bolt 7 between diaphragm clamping plate 9 and the diaphragm inner splint 14.The periphery of diaphragm 15 is clamped in the inboard of upper valve body 16 and following valve body 1 and forms air chambers 11 in upper valve body 16 inside, be evenly distributed with muscle 31 in the upper valve body in upper valve body 16 inner circumferential, be processed with upper valve body pore 17 on the muscle 31 in the upper valve body therein, upper valve body pore 17 links to each other with the gas control two-way valve 18 that is located at upper valve body 16 outsides, the gas control two-way valve 18 that is made of gas control mouth 19 exhaust ports nail 28 and passage and diaphragm is the prior art part, is not described in detail in this.Air chamber 11 is communicated with upper valve body pore 17.

Muscle 32 in the valve body forms passage between the muscle 32 in the adjacent following valve body under valve body 1 inner circumference is evenly distributed with down.The central position is provided with lining 5 in the following valve body 1, and lining 5 is bowl-shape, and intermediate throughholes is enclosed within on the central shaft of piston 3.The periphery of lining 5 is clipped between upper valve body 16 and the following valve body 1 with the periphery of diaphragm 15.Lining 5 is provided with lining oilhole 13, following valve body oilhole 10 under lining 13 is communicated with on the interior muscle 32 of valve body and lining 5, diaphragm 15, the formed inner chamber of piston 3 central shaft parts.Following valve body 1 outside screw is connected with the oil nozzle 25 of band oil nozzle endoporus 26, between oil nozzle 25 and the following valve body 1 seal ring 24 is housed, between the inner of oil nozzle endoporus 26 and the following valve body oilhole 10 sealed steel ball 21 that is leaned by spring 20 is housed, on oil nozzle 25, is processed with the oil permeable hole 23 that is communicated with oil nozzle endoporus 26 and following valve body oilhole 10.

The outlet 29 of following valve body 1 by in the adjacent following valve body between the muscle 32 in formed passage and the adjacent upper valve body between the muscle 31 formed passage be connected with the import 30 of upper valve body 16.

Be provided with between diaphragm clamping plate 9 and lining 5 and lean spring, lean spring and be made up of inner spring 6 and outer spring 8, inner spring 6 is enclosed within the piston 3 central shafts part outside, and outer spring 8 is enclosed within the outside of inner spring 6.Inner spring 6 one ends lean in the groove on diaphragm clamping plate 9, and the other end leans on lining 5, and outer spring 8 one ends lean on diaphragm inner splint 14, and the other end leans in the groove of lining 5.

In order to guarantee sealing, between between the junction plane of down valve body 1 and upper valve body 16, between the inboard of lining 5 outsides and following valve body 1, outside the central shaft of lining 5 mesopores and piston 3, be equipped with seal ring.

Working procedure is as follows, following valve body 1 and upper valve body 16 in this valve are connected in the fuel loading system by flange, gas control mouth 19 joins with the gas control device, oil nozzle 25 joins with the in-line of quilt oiling fuel tank, at first drive 18 work of gas control two-way valve by Pneumatic actuator, inflate in air chamber 11 by upper valve body 17, air chamber 11 internal pressures are increased, under pressure, promoting diaphragm clamping plate 9 is moved to the left, the central shaft of piston 3 partly drives piston 3 and is moved to the left with respect to following valve body 1, diaphragm 15 distortion this moment, inner spring 6, outer spring 8 is compressed, and has been communicated with outlet 29 simultaneously, passage in the adjacent following valve body between the muscle 32, passage in the adjacent upper valve body between the muscle 31, import 30, this device are in the oiling working state.In moving process, the oil in the inner chamber that is surrounded by the central shaft of bowl-shape lining 5, diaphragm 15, piston 3 part can pass through lining oilhole 13, valve body oilhole 10, gap 22, oil permeable hole 23,26 discharges of oil nozzle endoporus down.When tank pressure increases, pressure in the oil nozzle endoporus 26 increases thereupon, spring 20 is compressed, the chamber pressure that is surrounded by the central shaft of bowl-shape lining 5, diaphragm 15, piston 3 part is increased, the elastic force of inner spring 6 and outer spring 8 in addition, if this power is during greater than the set pressure of Pneumatic actuator, piston 3 can move right, automatically close the filling passage of this device, reach the purpose of safety, voltage stabilizing oiling.

Claims

1, a kind of pipe internal pressure control valve, it comprises interconnective upper valve body (16) and following valve body (1), it is characterized in that: the inboard at following valve body (1) is furnished with piston (3) mutually, described piston (3) is connected with the diaphragm clamping plate (9) that are positioned at the valve body middle part, diaphragm (15) is fixed on the diaphragm clamping plate (9), the periphery of diaphragm (15) is clamped in the inboard of upper valve body (16) and following valve body (1) and forms air chamber (11) in upper valve body (16) inside, in upper valve body (16), be provided with muscle in the upper valve body (31), gas control two-way valve (18) outside muscle (31) is provided with upper valve body pore (17) and is located at upper valve body (16) in the upper valve body links to each other, air chamber (11) is communicated with upper valve body pore (17), in following valve body (1), be provided with muscle (32) in the valve body down and be positioned at the lining (5) at middle part, lining (5) is provided with following valve body oilhole (10) and the lining (5) on the interior muscle (32) of valve body under lining oilhole (13) connection, diaphragm (15), the formed inner chamber of piston (3) central shaft part, following valve body (1) outside is provided with the oil nozzle (25) of band oil nozzle endoporus (26), be provided with the ball sealer (21) that leans by spring (20) between the inner of oil nozzle endoporus (26) and the following valve body oilhole (10), on oil nozzle (25), be provided with the oil permeable hole (23) that is communicated with oil nozzle endoporus (26) and following valve body oilhole (10), the outlet (29) of following valve body (1) by in gap between the muscle (32) in the adjacent following valve body and the adjacent upper valve body between the muscle (31) gap be connected with the import (30) of upper valve body (16), be provided with between described diaphragm clamping plate (9) and the lining (5) and lean spring.

2, pipe internal pressure control valve according to claim 1, it is characterized in that: described lining (5) is bowl-shape, its periphery is clamped in the inboard of described upper valve body (16) and following valve body (1) with the periphery of diaphragm (15), bowl-shape lining (5) mesopore is sleeved on piston (3) the central shaft part outside, is connected and fixed by axial piston bolt (7) between the central shaft of described diaphragm clamping plate (9) and piston (3).

3, pipe internal pressure control valve according to claim 2 is characterized in that: described diaphragm clamping plate (9) are gone up bolt and are connected with diaphragm inner splint (14), and described diaphragm (15) is clipped between diaphragm clamping plate (9) and the diaphragm inner splint (14).

4, pipe internal pressure control valve according to claim 3, it is characterized in that: the described spring that leans is made up of inner spring (6) and outer spring (8), each spring all is sleeved on piston (3) the central shaft part outside, described inner spring (6) one ends lean in the groove of diaphragm clamping plate (9), the other end leans on lining (5), described outer spring (8) one ends lean on diaphragm inner splint (14), and the other end leans in the groove of lining (5).

5, pipe internal pressure control valve according to claim 4 is characterized in that: be equipped with Sealing between between the junction plane of described down valve body (1) and upper valve body (16), between the inboard of piston (3) outside and following valve body (1), outside the lining (5) and between the inboard of following valve body (1), outside the central shaft of lining (5) mesopore and piston (3).