CN201288882Y

CN201288882Y - Hydraulic controlled piston type water-attack discharging valve

Info

Publication number: CN201288882Y
Application number: CNU2008201590788U
Authority: CN
Inventors: 刘涌; 易祖成; 杨晓燕
Original assignee: Hunan Xiangtianyuan Valve Manufacturing Co Ltd
Current assignee: Hunan Xiangtianyuan Valve Manufacturing Co Ltd
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-08-12
Anticipated expiration: 2018-11-07

Abstract

The utility model discloses a liquid control piston water hammer discharge valve. A piston cylinder (6) and a piston (9) thereof are arranged on a valve body (11). A control cavity on a pilot valve assembly (3) is communicated with pressure medium at stable position in the front of a main valve via a first pass-by control pipeline (15). One branch circuit of one end of a working cavity of the pilot valve assembly (3) is connected with an upper cavity of the piston cylinder (6) via a third pass-by control pipeline (19), and another branch circuit is connected with an inlet end (13) via a second pass-by control pipeline (18) which is provided with a flow regulating valve (1) and a filter (2). The other end of the working cavity of the pilot valve assembly (3) is connected with an outlet end (12) via a fourth pass-by control pipeline (20). The utility model has the advantages of simple and compact structure, sensitive response when the water hammer condition happens, convenient maintenance, small floor area, high reliability, etc., can rapidly discharge, and can effectively guarantee the safe operation of the feed system in the water hammer condition.

Description

Hydraulic control piston type water attack bleeder valve

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of hydraulic control piston type water attack bleeder valve.

Background technique

In the prior art; general water attack bleeder valve; its structure is that a valve plate is arranged in the Y valve body; be connected with valve rod on the valve plate; be connected with the diaphragm and the upper and lower pressing plate of diaphragm that are synchronized with the movement on the valve rod again, pilot valve by having the pressure gathering-device and the pilot line that is attached thereto realize releasing of water attack protected the security purpose of pipe-line system.Because their complex structures, volume is big, and part is many, so the defective that pair wasting of resources is many, floor space big, maintenance is inconvenient, cost of production is high is arranged.

The model utility content

Problem to be solved in the utility model is the technical problem that exists at prior art, providing a kind of is quick on the draw under the water attack situation takes place, release rapidly, can guarantee the hydraulic control piston type water attack bleeder valve of the safe operation of supply system under the water attack situation effectively.

For solving the problems of the technologies described above, the hydraulic control piston type water attack bleeder valve that the utility model provides, be provided with the entrance point and the outlet end of connection in the valve body, on described valve body, be provided with piston cylinder and valve gap thereof, in described piston cylinder, be provided with piston with the corresponding sealing of described entrance point, can be communicated with or cut off described entrance point and outlet end during described piston up-down, described piston is equipped with the area of O RunddichtringO and its top one side greater than the opposite side water side, described piston side wall leaves the cavity that is communicated with atmosphere with described piston cylinder, seal ring is equipped with in underpart at described piston cylinder, control chamber on the guide valve component is by the pressure medium at stable place before the first by-pass governing pipeline connection main valve valve, a branch road of described guide valve component active chamber one end links to each other with described piston cylinder epicoele by the 3rd by-pass governing pipeline, another branch road links to each other with described entrance point by the second by-pass governing pipeline that flow control valve and filter are housed, and the described guide valve component active chamber the other end links to each other with described outlet end by the 4th by-pass governing pipeline.

The indicating arm that passes described valve gap is installed above the described piston.

The area of described piston top one side is 2 times of opposite side water side.

Described piston lower end surface is provided with ball bumps, and the sealing surface Position Design of described piston becomes to be lower than guide face.

Adopt the hydraulic control piston type water attack bleeder valve of technique scheme, compared with prior art, advantage of the present utility model just is:

1, the utility model hydraulic control piston type water attack bleeder valve, have simple in structure, compact, the existing bleeder valve of main valve volume ratio greatly reduces, floor space is few, assembling, maintenance, debugging are convenient, water attack can be when taking place in it, and rapid response and action have higher-security and reliability.

2, in the hydraulic control piston type water attack bleeder valve of model utility, valve body is designed to angie type (or straight-through type), and the middle part is the expanded letter streamline shape, can fully hold the medium of releasing.

3, in the hydraulic control piston type water attack bleeder valve of model utility, a piston movable up and down is arranged, the area of piston top one side is 2 times of opposite side water side, and the power of closing on top is enough guaranteed.The piston lower end surface is designed to the spherical rather than plane of projection, it has not only increased the intensity of piston, improve the ability of the anti-moment water attack of piston, can be fairshaped permeable medium again, the flow resistance of bringing that reduces turbulent flow increases phenomenon, the sealing surface Position Design becomes to be lower than guide face, to reduce the erosion effect of flow at high speed medium to sealing surface, prolongs the life-span of sealing surface.

4, in the hydraulic control piston type water attack bleeder valve of model utility, in the piston cylinder flowing hole that is designed to petal shape is arranged, under the situation of piston different opening, the linear relationship that can keep flow, other harm phenomenon of bringing to system such as it can eliminate vibration that medium brings effectively, utter long and high-pitched sounds.

5, the valve gap in the hydraulic control piston type water attack bleeder valve of model utility be designed to spherical, with the intensity that increases valve gap and can reduce its thickness with economical with materials.

6, on the movable part (piston) in the hydraulic control piston type water attack bleeder valve of model utility, in sealing, adopt the seal form of O RunddichtringO, simple in structure, cost is low, sealing is reliable.

In sum, the utlity model has simple in structure, compact, under the water attack situation takes place, be quick on the draw, release rapidly, can guarantee the safe operation of supply system under the water attack situation effectively, have simultaneously easy to maintenance, floor space is little, the reliability advantages of higher.

Description of drawings

Fig. 1 is that the utility model is in the structural representation when opening;

Fig. 2 is that the utility model is in the structural representation when closing.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1 and Fig. 2, valve body 11 is designed to angie type, also can be designed to straight-through type, the middle part is the expanded letter streamline shape, can fully hold the medium of releasing, be provided with the entrance point 13 and the outlet end 12 of connection in the valve body 11, on valve body 11, be provided with piston cylinder 6, on piston cylinder 6, be connected with valve gap 5 by bolt 7, in piston cylinder 6, be provided with piston 9 with entrance point 13 corresponding sealings, the area of piston 9 tops one side is 2 times of opposite side water side, piston 9 lower end surface are provided with ball bumps 14, the sealing surface Position Design of piston 9 becomes to be lower than guide face, when moving up and down, piston 9 can be communicated with or cut off entrance point 13 and outlet end 12, piston 9 is equipped with O RunddichtringO 8, the indicating arm 4 that passes valve gap 5 is installed above the piston 9, piston 9 sidewalls leave the cavity 17 that is communicated with atmosphere by pore 16 with piston cylinder 6, in the underpart of piston cylinder 6 seal ring 10 is housed, control chamber on the guide valve component 3 is stablized the pressure medium of locating before being communicated with the main valve valve by the first by-pass governing pipeline 15, a branch road of guide valve component 3 active chambers one end links to each other with piston cylinder 6 epicoeles by the 3rd by-pass governing pipeline 19, another branch road links to each other with entrance point 13 by the second by-pass governing pipeline 18 that flow control valve 1 and filter 2 are housed, and the guide valve component 3 active chamber the other ends link to each other with outlet end 12 by the 4th by-pass governing pipeline 20.

The area of piston 9 tops one side is 2 times of opposite side water side, and the power of closing on top is enough guaranteed.Piston 9 lower end surface are designed to ball bumps 14 rather than plane, it has not only increased the intensity of piston 9, improve the ability of the anti-moment water attack of piston, can be fairshaped permeable medium again, the flow resistance of bringing that reduces turbulent flow increases phenomenon, the sealing surface Position Design of piston 9 becomes to be lower than guide face, to reduce the erosion effect of flow at high speed medium to sealing surface, prolongs the life-span of sealing surface.

The flowing hole that is designed to petal shape is arranged in piston cylinder 6, under the situation of piston 9 different opening, can keep the linear relationship of flow, other harm phenomenon of bringing to system such as it can eliminate vibration that medium brings effectively, utter long and high-pitched sounds.

Valve gap 5 is designed to spherical, also can reduce its thickness with economical with materials with the intensity that increases valve gap.

Referring to Fig. 1 and Fig. 2, working principle of the present utility model is:

Referring to Fig. 2, during proper functioning, before pressure medium enters the main valve valve, this moment, a part of pressure medium also entered in piston cylinder 6 epicoeles by modulating valve 1, some also enters in the cavity of resorption of the control chamber on the guide valve component 3 simultaneously, because the spring in the guide valve component 3 is being regulated on the pressing plate that acts on its diaphragm top under the power effect in advance, the upwards active force that this moment, spring force produced greater than diaphragm downforce medium, flashboard in the guide valve component 3 is in downward closed condition, and pressure medium can not be by after the opening flow valves in the guide valve component 3.Because piston 9 top areas are 2 times of bottom water side, so piston 9 downward active forces are 2 times of active force upwards, make piston 9 be in reliable closed condition, the interior medium of valve can not flow valves after.

Referring to Fig. 1; when water attack produces; the instantaneous pressure ripple is delivered on the upstream face of piston 9 bottoms; piston 9 tops that simultaneously also are delivered to the diaphragm cavity of resorption of the control chamber on the guide valve component 3 and are delivered to piston cylinder 6 epicoeles; because the effect of damming of modulating valve 1; make that the susceptibility of the control chamber diaphragm cavity of resorption on the guide valve component 3 is stronger relatively than the susceptibility of piston cylinder 6 epicoeles; guide valve component 3 interior springs were compressed under the effect that increases upward force and moved up this moment; driving the flashboard that blocks intercommunicating pore in the guide valve component 3 synchronously moves up; intercommunicating pore is opened at this moment; the pressure medium of piston cylinder 6 epicoele inner carriers 9 is by intercommunicating pore pressure release behind valve; this moment, piston 9 was under the effect of upstream face power; promote upwards fast moving of piston 9, after the pressure medium in the main valve is discharged into valve very soon, thus the safety of protection pipe network.

After water attack weakens, when guide valve component 3 inner springs are set up active force in advance greater than the active force of its diaphragm bottom, guide valve component 3 springs promote inner flashboard and move down and close at last opening, at this moment, the pressure on piston cylinder 6 inner carriers 9 tops strengthens lentamente gradually, promote piston 9 at last and slowly be moved downward to the position of closing primary valve, make main valve get back to initial wait water attack arriving state.

Claims

1, a kind of hydraulic control piston type water attack bleeder valve, it is characterized in that: the entrance point (13) and the outlet end (12) that are provided with connection in the valve body (11), on described valve body (11), be provided with piston cylinder (6) and valve gap (5) thereof, in described piston cylinder (6), be provided with piston (9) with the corresponding sealing of described entrance point (13), described piston (9) can be communicated with or cut off described entrance point (13) and outlet end (12) when moving up and down, described piston (9) is equipped with the area of O RunddichtringO (8) and its top one side greater than the opposite side water side, described piston (9) sidewall leaves the cavity (17) that is communicated with atmosphere with described piston cylinder (6), in the underpart of described piston cylinder (6) seal ring (10) is housed, control chamber on the guide valve component (3) is stablized the pressure medium of locating before being communicated with the main valve valve by the first by-pass governing pipeline (15), a branch road of described guide valve component (3) active chamber one end links to each other with described piston cylinder (6) epicoele by the 3rd by-pass governing pipeline (19), another branch road links to each other with described entrance point (13) by the second by-pass governing pipeline (18) that flow control valve (1) and filter (2) are housed, and described guide valve component (3) the active chamber the other end links to each other with described outlet end (12) by the 4th by-pass governing pipeline (20).

2, hydraulic control piston type water attack bleeder valve according to claim 1 is characterized in that: the indicating arm (4) that passes described valve gap (5) is installed above the described piston (9).

3, hydraulic control piston type water attack bleeder valve according to claim 1 and 2 is characterized in that: the area of described piston (9) top one side is 2 times of opposite side water side.

4, hydraulic control piston type water attack bleeder valve according to claim 1 and 2, it is characterized in that: described piston (9) lower end surface is provided with ball bumps (14), and the sealing surface Position Design of described piston (9) becomes to be lower than guide face.