CN204420141U - A kind of bidirectional metal sealing hydraulic butterfly valve - Google Patents
A kind of bidirectional metal sealing hydraulic butterfly valve Download PDFInfo
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- CN204420141U CN204420141U CN201420787677.XU CN201420787677U CN204420141U CN 204420141 U CN204420141 U CN 204420141U CN 201420787677 U CN201420787677 U CN 201420787677U CN 204420141 U CN204420141 U CN 204420141U
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- hydrodynamic reciprocating
- reciprocating sealing
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Abstract
The utility model relates to a kind of bidirectional metal sealing hydraulic butterfly valve, comprise valve body section, operating device, servomotor and drive unit, drive unit connects and drives servomotor, servomotor connects and drives operating device, operating device is arranged on valve body section, valve body section comprises valve body and valve plate, valve plate is positioned at valve inner, the outward edge of valve plate installs a valve plate seal ring, the inwall of valve body installs a valve body hydrodynamic reciprocating sealing seat by hydrodynamic reciprocating sealing seat pressure ring, between this hydrodynamic reciprocating sealing seat pressure ring and valve body hydrodynamic reciprocating sealing seat, cylindrical compression spring is set, the madial wall of this valve body hydrodynamic reciprocating sealing seat is inclined-plane, and valve plate seal ring contacts with this sloped roof means of press seals.The utility model is a kind of design science, bidirectional metal sealing hydraulic butterfly valve rational in infrastructure, easy to use, because this butterfly valve can realize two way sealed, therefore can improve sealing effect after using, realize zero leakage, for the work such as use, maintenance of water turbine set provides great convenience.
Description
Technical field
The utility model relates to valve technology field, especially a kind of bidirectional metal sealing hydraulic butterfly valve.
Background technique
Water turbine inlet butterfly valve is arranged on the penstock before water turbine.Its Main Function is: 1, unit generation emergency episode, and when water distributor cannot be closed, can move water and close water inlet butterfly valve, realizes emergency shutdown, avoids fault spread.2, when unit needs maintenance down, water inlet butterfly valve is closed, press water after atmospheric valve, need not press water before atmospheric valve in diversion steel pipe, can unit maintenance be carried out.3, for the power station adopting fork pipelines to supply water, before every platform water turbine, installing water inlet butterfly valve, can cut out when a unit breaks down or overhauls butterfly valve of correspondingly intaking, and not affect the normal operation of other unit.
At present, the butterfly valve that loine pressure steel pipe is installed is generally one-way sealing, i.e. forward sealing, when valve plate is subject to positive acting power, good sealing effect, can play the effect preventing from leaking.And when valve plate is subject to opposition, due to not sealing, therefore there will be leakage phenomenon, especially when being arranged on water pump in pump station outlet, because the refluence of pipeline medium can damage water pump, the water hammer of generation can destroy pipe-line system, causes water supply pipe net system not work.
Summary of the invention
The purpose of this utility model is to make up the deficiencies in the prior art part, provides a kind of metal sealing hydraulic butterfly valve that can realize two way sealed.
The purpose of this utility model is realized by following technological means:
A kind of bidirectional metal sealing hydraulic butterfly valve, comprise valve body section, operating device, servomotor and drive unit, drive unit connects and drives servomotor, servomotor connects and drives operating device, operating device is arranged on valve body section, valve body section comprises valve body and valve plate, valve plate is positioned at valve inner, it is characterized in that: the outward edge of valve plate installs a valve plate seal ring, the inwall of valve body installs a valve body hydrodynamic reciprocating sealing seat by hydrodynamic reciprocating sealing seat pressure ring, between this hydrodynamic reciprocating sealing seat pressure ring and valve body hydrodynamic reciprocating sealing seat, cylindrical compression spring is set, the madial wall of this valve body hydrodynamic reciprocating sealing seat is inclined-plane, and valve plate seal ring contacts with this sloped roof means of press seals.
And described valve plate seal ring adopts seal ring pressure ring and bolt to be arranged on valve plate.
And, be provided with multiple O-ring seals between described valve body hydrodynamic reciprocating sealing seat and valve body.
And, be provided with O-ring seals between described hydrodynamic reciprocating sealing seat pressure ring and valve body.
And the wall thickness of close hydrodynamic reciprocating sealing seat pressure ring one end of described valve body hydrodynamic reciprocating sealing seat is greater than the wall thickness away from hydrodynamic reciprocating sealing seat pressure ring one end.
And described drive unit is electric control system and hydraulic system, electric control system and hydraulic system composition control cabinet, and with valve body section apart arrangement.
And described hydraulic system is provided with in system dead electricity situation can the hand pump of manual-lock or Open valve.
Advantage of the present utility model and good effect are:
1, valve plate seal ring installed by this butterfly valve on valve plate, and valve body is installed valve body hydrodynamic reciprocating sealing seat, and this valve plate seal ring contacts with the sloped roof means of press seals of valve body hydrodynamic reciprocating sealing seat, achieves two way sealed.Be arranged on by this butterfly valve on the penstock before water turbine, upstream side is design pressure, and when downstream side is with no pressure, leakage rate is zero.Upstream side is with no pressure, and when downstream side is the design pressure of 0.8 times, valve leakage automatic inspection is zero.When the water turbine set long period shuts down, close water inlet butterfly valve, leaking of water distributor or jet pipe place can be reduced, avoid or alleviate clearance cavitation erosion or abrasion.
2, this butterfly valve adopts single sealing, bilateral sealing device, and seal arrangement is detachable, and sealing adopts elastic metal hard sealing, and material is 1Cr18Ni9Ti.In addition, sealing is whole circle, and the Design and manufacture reliable performance of seal arrangement, life-span are long.
3, this butterfly valve can handle the opening and closing of valve with electronic or manual two cover systems, utilizes the device such as hydraulic system and manually operated valve in maintenance or without open and close valve manual during electricity, can add the convenience of operation.
4, the main body of this butterfly valve is two eccentric structures, during valve closing, utilizes two eccentric structure slowly to close to complete shut-down under dynamic waterpower and oil pressure mixed function, reduces inner pipe water pressure fluctuation, avoid water hammer accident to occur.
5, the operating device of this butterfly valve is provided with locking device, can lock, avoid misoperation, improve Security when valve is in complete shut-down or fully open position.
6, the servomotor of this butterfly valve is two-way cylinder, and the import installing throttle valve in the opening and closing chamber of servomotor, with the switching time of regulating butterfly valve, throttling arrangement is stable, reliable, can meet the needs of different operating mode.
7, this butterfly valve both can be used as water turbine inlet butterfly valve be arranged on water turbine before penstock on; also can be used as pipeline hydraulic butterfly check valve to use; mainly be arranged on the exit of pump of all kinds of pumping plants such as water conservancy, electric power, plumbing; be used for avoiding and reduce pipe-line system medium flow backwards and produce excessive water hammer, to protect pipe-line system.Its function is with valve generation two valves (join safety check with gate valve in traditional circuit design or join safety check with common butterfly valve).
8, this hydraulic butterfly check valve is pipeline control apparatus more advanced both at home and abroad at present; during work; valve coordinates with pipeline main frame; according to Calculations of Hydraulic Transient principle; by the keying program preset; effective elimination pipeline water hammer, realizes the reliable cut-off of pipeline, plays the effect of protection pipeline security of system.
9, the utility model is a kind of design science, bidirectional metal sealing hydraulic butterfly valve rational in infrastructure, easy to use, because this butterfly valve can realize two way sealed, therefore can improve sealing effect after using, realize zero leakage, for the work such as use, maintenance of water turbine set provides great convenience.
Accompanying drawing illustrates:
Fig. 1 a is the schematic diagram of main body, operating device and servomotor;
Fig. 1 b is the schematic diagram of electric control system;
Fig. 1 c is the schematic diagram of hydraulic system;
Fig. 2 is Bidirectional seal structure figure.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing; It should be noted that, the present embodiment is narrative, is not determinate, can not limit protection domain of the present utility model with this.
A kind of bidirectional metal sealing hydraulic butterfly valve, comprise valve body section 1, operating device 2, servomotor 3 and drive unit, drive unit connects and drives servomotor, servomotor is two-way cylinder, import installing throttle valve in the opening and closing chamber of servomotor, servomotor connects and drives operating device, and operating device is arranged on valve body section, valve body section comprises valve body 6 and valve plate 15, and valve plate is positioned at valve inner.
Innovative point of the present utility model is: the outward edge of valve plate adopts seal ring pressure ring 17 and bolt 16 to install a valve plate seal ring 14, the inwall of valve body installs a valve body hydrodynamic reciprocating sealing seat 13 by hydrodynamic reciprocating sealing seat pressure ring 8 and hexagon socket head cap screw 7, between this hydrodynamic reciprocating sealing seat pressure ring and valve body hydrodynamic reciprocating sealing seat, cylindrical compression spring 9 is set, the madial wall of this valve body hydrodynamic reciprocating sealing seat is inclined-plane, that is: the wall thickness near hydrodynamic reciprocating sealing seat pressure ring one end is greater than the wall thickness away from hydrodynamic reciprocating sealing seat pressure ring one end.Valve plate seal ring now seals with this sloped roof compacting and contacts.
Multiple O-ring seals 11 and 12 is provided with between valve body hydrodynamic reciprocating sealing seat and valve body.O-ring seals 10 is provided with between hydrodynamic reciprocating sealing seat pressure ring and valve body.Sealing in the present embodiment adopts elastic metal hard sealing, and material is 1Cr18Ni9Ti, and sealing is whole circle.
This butterfly valve can handle the opening and closing of valve with electronic, manual two cover systems.That is: drive unit is electric control system 4 and hydraulic system 5, electric control system and hydraulic system composition control cabinet, and with valve body section apart arrangement.Hydraulic system is provided with hand pump, can manual-lock or Open valve in system dead electricity situation.Utilize the device such as hydraulic system and manually operated valve, can in maintenance or without manual on/off valve during electricity.Electric automatic control case can realize on the spot, remote auto controls and be connected with computer system control or operate butterfly valve.
Operating device is provided with stop pin, when valve closed positions (B) locks, can manual locking, and avoid misoperation.When valve wide open position (A) locks, this stop pin energy electrical control, hydraulic operation also can manually-operables, and can send input and signal of pulling pin.
Working principle of the present utility model is:
As shown in Figure 2, when water (flow) direction is forward, valve plate seal ring, under the pressure of current, forms forward seal pressure with valve body hydrodynamic reciprocating sealing seat, realizes forward sealing.
When water (flow) direction reverse flow, under the effect of cylindrical compression spring and pressure medium, valve body hydrodynamic reciprocating sealing seat moves forward, and is formed seal with valve plate seal ring, realizes oppositely sealing, and achieves Bidirectional zero and reveals sealing.
Claims (7)
1. a bidirectional metal sealing hydraulic butterfly valve, comprise valve body section, operating device, servomotor and drive unit, drive unit connects and drives servomotor, servomotor connects and drives operating device, operating device is arranged on valve body section, valve body section comprises valve body and valve plate, valve plate is positioned at valve inner, it is characterized in that: the outward edge of valve plate installs a valve plate seal ring, the inwall of valve body installs a valve body hydrodynamic reciprocating sealing seat by hydrodynamic reciprocating sealing seat pressure ring, between this hydrodynamic reciprocating sealing seat pressure ring and valve body hydrodynamic reciprocating sealing seat, cylindrical compression spring is set, the madial wall of this valve body hydrodynamic reciprocating sealing seat is inclined-plane, and valve plate seal ring contacts with this sloped roof means of press seals.
2. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 1, is characterized in that: described valve plate seal ring adopts seal ring pressure ring and bolt to be arranged on valve plate.
3. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 1, is characterized in that: be provided with multiple O-ring seals between described valve body hydrodynamic reciprocating sealing seat and valve body.
4. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 1, is characterized in that: be provided with O-ring seals between described hydrodynamic reciprocating sealing seat pressure ring and valve body.
5. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 1, is characterized in that: the wall thickness of close hydrodynamic reciprocating sealing seat pressure ring one end of described valve body hydrodynamic reciprocating sealing seat is greater than the wall thickness away from hydrodynamic reciprocating sealing seat pressure ring one end.
6. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 1, is characterized in that: described drive unit is electric control system and hydraulic system, electric control system and hydraulic system composition control cabinet, and with valve body section apart arrangement.
7. a kind of bidirectional metal sealing hydraulic butterfly valve according to claim 6, is characterized in that: described hydraulic system is provided with in system dead electricity situation can the hand pump of manual-lock or Open valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787677.XU CN204420141U (en) | 2014-12-11 | 2014-12-11 | A kind of bidirectional metal sealing hydraulic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420787677.XU CN204420141U (en) | 2014-12-11 | 2014-12-11 | A kind of bidirectional metal sealing hydraulic butterfly valve |
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| Publication Number | Publication Date |
|---|---|
| CN204420141U true CN204420141U (en) | 2015-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420787677.XU Active CN204420141U (en) | 2014-12-11 | 2014-12-11 | A kind of bidirectional metal sealing hydraulic butterfly valve |
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| CN (1) | CN204420141U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482228A (en) * | 2014-12-11 | 2015-04-01 | 天津国际机械有限公司 | Bidirectional metal seal hydraulic control butterfly valve |
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2014
- 2014-12-11 CN CN201420787677.XU patent/CN204420141U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482228A (en) * | 2014-12-11 | 2015-04-01 | 天津国际机械有限公司 | Bidirectional metal seal hydraulic control butterfly valve |
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| GR01 | Patent grant |