CN209026258U - Fast opening and closing power station exhaust check valve - Google Patents
Fast opening and closing power station exhaust check valve Download PDFInfo
- Publication number
- CN209026258U CN209026258U CN201821583542.6U CN201821583542U CN209026258U CN 209026258 U CN209026258 U CN 209026258U CN 201821583542 U CN201821583542 U CN 201821583542U CN 209026258 U CN209026258 U CN 209026258U
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- connect
- pilot hole
- sealing ring
- push rod
- guide sleeve
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Abstract
The utility model discloses fast opening and closing power station exhaust check valves, including valve body, water inlet pipe, drainpipe, flap, first push rod, reinforcing rib, first guide sleeve, spring pocket, reset spring, ram seat, water inlet, discharge outlet, relief hole, switch handle, first end cover, second guide sleeve, second push rod, first sealing ring, second sealing ring, guide rod, gas port, piston, first pilot hole, second pilot hole, pilot hole, third sealing ring, second end cover and third pilot hole, the valve body side is connect by welding with drainpipe, and discharge outlet is offered on the inside of drainpipe, third sealing ring is provided on the inside of the discharge outlet, and third sealing ring side is provided with flap, described flap one end is connect by welding with the first push rod, the check-valves can be in interior fluid mediums adverse current, voluntarily close flap, to vapour Turbine or extract system can tilt installation with maximum protection, and fluid dynamic is not easy to lose in pipeline.
Description
Technical field
The utility model relates to check-valves technical fields, specially fast opening and closing power station exhaust check valve.
Background technique
Check-valves is usually used on the non-aggressives medium pipeline such as steam and water of steam power plant's extract system or other systems,
Prevent pressure of the Steam Turbine in unexpected removal of load in steam turbine from reducing suddenly, in extraction steam pipe and each heater steam flow backwards into
Entering in steam turbine causes turbine vane to smash, and damages the serious accident of steam turbine generator, and prevents heater system pipe leakage
Water is set to enter in steam turbine from bleed steam pipework and water hammer accident occurs, it is in the prior art to protect the safe operation of steam turbine
Check-valves is mostly lift check valve, generally relies on flap gravity closing, and when check-valves installs run-off the straight, gravity is made
It with decrease, cannot voluntarily close, cause the normally opened state that do not close, and open and close that torque is larger to be difficult to realize fast opening and closing, in addition valve
For internal runner than more tortuous, fluid media (medium) flow resistance is big, and fluid dynamic is caused to lose in pipeline greatly, and therefore, design is quick
It is necessary for opening and closing power station exhaust check valve.
Utility model content
The purpose of this utility model is to provide fast opening and closing power station exhaust check valves, to solve to mention in above-mentioned background technique
Out the problem of.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solutions: fast opening and closing power station exhaust non-return
Valve, including valve body, water inlet pipe, drainpipe, flap, the first push rod, reinforcing rib, the first guide sleeve, spring pocket, reset spring, push away
Pole socket, water inlet, discharge outlet, relief hole, switch handle, first end cover, the second guide sleeve, the second push rod, the first sealing ring,
Two sealing rings, guide rod, gas port, piston, the first pilot hole, the second pilot hole, pilot hole, third sealing ring, second end cover
With third pilot hole, the valve body side is connect by welding with drainpipe, and offers discharge outlet, the row on the inside of drainpipe
It is provided with third sealing ring on the inside of the mouth of a river, and third sealing ring side is provided with flap, described flap one end passes through welding and the
The connection of one push rod is connect on the inside of the drainpipe with the first guide sleeve by reinforcing rib, and the first guide sleeve inside offers the
One pilot hole, first push rod pass through the first pilot hole and are connect by bolt with ram seat, and are provided with bullet on the outside of ram seat
Spring set, the spring pocket inside are provided with reset spring, and the body top is connect by welding with water inlet pipe, and in water inlet pipe
Side offers water inlet, and described valve body one end connect by welding with first end cover, and first end cover inside passes through bolt and the
The connection of two guide sleeves, second guide sleeve side offer the second pilot hole, and the ram seat side passes through bolt and second
Push rod connection, and the second push rod passes through the second pilot hole and is connect by welding with piston, the piston side is provided with second end
Lid, and second end cover is connect by bolt with guide rod, the piston side offer third pilot hole, and guide rod is across the
Three pilot holes are connect by cooperation with the second push rod.
Further, the ram seat passes through cooperation with the first guide sleeve and connect with spring pocket, and ram seat passes through again
Position spring is connect with the first guide sleeve.
Further, the body base is provided with relief hole, and relief hole side is provided with switch handle.
Further, second push rod and piston side are respectively arranged with the first sealing ring, the second sealing ring.
Further, the water inlet pipe and drainpipe side offer several pilot holes.
Further, second guide sleeve one end is connect by bolt with second end cover, and second end cover side opens up
There is gas port.
Compared with prior art, the utility model beneficial effect achieved is:
1. the valve quickly can closely close flap, prevent liquid from adverse current occurs, to steam turbine or extract system with maximum
Protection；
2. the flap of the valve body does not depend on gravity closing, even if inclination installation, can also normally open and close；
3. the valve body inner flow passage is straight, fluid media (medium) flow resistance is small, and fluid dynamic is not easy to lose in pipeline；
It 4. body base is provided with relief hole, can be opened and closed by switch handle, cut down surge pressure, prevent water attack
Accident.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the overall structure cross-section front view of the utility model；
Fig. 3 is the overall structure cross sectional side view of the utility model；
In figure: 1, valve body；2, water inlet pipe；3, drainpipe；4, flap；5, the first push rod；6, reinforcing rib；7, the first guiding
Set；8, spring pocket；9, reset spring；10, ram seat；11, water inlet；12, discharge outlet；13, relief hole；14, switch handle；
15, first end cover；16, the second guide sleeve；17, the second push rod；18, the first sealing ring；19, the second sealing ring；20, guide rod；
21, gas port；22, piston；23, the first pilot hole；24, the second pilot hole；25, pilot hole；26, third sealing ring；27, second
End cap；28, third pilot hole.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: fast opening and closing power station exhaust check valve, including valve
Body 1, drainpipe 3, flap 4, the first push rod 5, reinforcing rib 6, the first guide sleeve 7, spring pocket 8, reset spring 9, pushes away water inlet pipe 2
Pole socket 10, water inlet 11, discharge outlet 12, relief hole 13, switch handle 14, first end cover 15, the second guide sleeve 16, the second push rod
17, the first sealing ring 18, the second sealing ring 19, guide rod 20, gas port 21, piston 22, the first pilot hole 23, the second pilot hole
24, pilot hole 25, third sealing ring 26, second end cover 27 and third pilot hole 28,1 side of valve body pass through welding and drainpipe 3
Connection, and discharge outlet 12 is offered on the inside of drainpipe 3, third sealing ring 26, and third sealing ring are provided on the inside of discharge outlet 12
26 sides are provided with flap 4, and 4 one end of flap is connect by welding with the first push rod 5, pass through reinforcing rib 6 and the on the inside of drainpipe 3
The connection of one guide sleeve 7, and the first pilot hole 23 is offered on the inside of the first guide sleeve 7, the first push rod 5 is logical across the first pilot hole 23
It crosses bolt to connect with ram seat 10, and is provided with spring pocket 8 on the outside of ram seat 10, reset spring 9 is provided on the inside of spring pocket 8,
It is connect by welding with water inlet pipe 2 at the top of valve body 1, and offers water inlet 11 on the inside of water inlet pipe 2,1 one end of valve body passes through welding
It connect, and is connect by bolt with the second guide sleeve 16 inside first end cover 15,16 side of the second guide sleeve with first end cover 15
The second pilot hole 24 is offered, 10 side of ram seat is connect by bolt with the second push rod 17, and the second push rod 17 passes through second
Pilot hole 24 is connect by welding with piston 22, and 22 side of piston is provided with second end cover 27, and second end cover 27 passes through bolt
It is connect with guide rod 20,22 side of piston offers third pilot hole 28, and guide rod 20 passes through third pilot hole 28 by matching
Conjunction is connect with the second push rod 17, and ram seat 10 is connect by cooperation with spring pocket 8 with the first guide sleeve 7, and ram seat 10 is logical
It crosses reset spring 9 to connect with the first guide sleeve 7,1 bottom of valve body is provided with relief hole 13, and 13 side of relief hole is provided with switch
Handle 14, the second push rod 17 are respectively arranged with the first sealing ring 18, the second sealing ring 19, water inlet pipe 2 and row with 22 side of piston
3 side of water pipe offers several pilot holes 25, and 16 one end of the second guide sleeve is connect by bolt with second end cover 27, and second
27 side of end cap offers gas port 21；In use, liquid is entered inside valve body 1 by water inlet pipe 2, when 1 internal pressure of valve body
When increasing to a certain extent, flap 4 is pushed to slide in and out, flap 4 pulls the first push rod 5 first leading in the first guide sleeve 7
It is slided to hole 23,9 drawn stem seat 10 of reset spring, which is squeezed, at this time stores elastic potential energy in compressive state, and the first push rod 5 drives
Second pilot hole 24 sliding of second push rod 17 in the second guide sleeve 16, band piston 22 are slided along guide rod 20, and compression is lived
Air inside plug 22 and the second guide sleeve 16, when adverse current occurs for liquid in drainpipe 3,1 internal pressure of valve body reduces, at this time
Reset spring 9 discharges elastic potential energy, while the compressed air inside piston 22 and the second guide sleeve 16 expands reverse push piston
22, accelerate the closing speed of flap 4, when flap 4 is closed, change dramatically, 1 bottom of valve body occur for 1 internal liquid flow velocity of valve body
Be provided with relief hole 13, can be opened and closed by switch handle 14, cut down surge pressure, prevent water hammer accident, valve body 1, into
Water pipe 2 and drainpipe 3 form L-type inner flow passage, and fluid media (medium) flow resistance is small.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (6)
1. fast opening and closing power station exhaust check valve, including valve body (1), water inlet pipe (2), drainpipe (3), flap (4), the first push rod
(5), reinforcing rib (6), the first guide sleeve (7), spring pocket (8), reset spring (9), ram seat (10), water inlet (11), draining
Mouth (12), relief hole (13), switch handle (14), first end cover (15), the second guide sleeve (16), the second push rod (17), first
Sealing ring (18), the second sealing ring (19), guide rod (20), gas port (21), piston (22), the first pilot hole (23), second
Pilot hole (24), pilot hole (25), third sealing ring (26), second end cover (27) and third pilot hole (28), it is characterised in that:
Valve body (1) side is connect by welding with drainpipe (3), and offers discharge outlet (12), the row on the inside of drainpipe (3)
It is provided with third sealing ring (26) on the inside of the mouth of a river (12), and third sealing ring (26) side is provided with flap (4), the flap
(4) one end is connect by welding with the first push rod (5), passes through reinforcing rib (6) and the first guide sleeve on the inside of the drainpipe (3)
(7) it connects, and is offered the first pilot hole (23) on the inside of the first guide sleeve (7), first push rod (5) passes through the first pilot hole
(23) it is connect by bolt with ram seat (10), and is provided with spring pocket (8) on the outside of ram seat (10), in the spring pocket (8)
Side is provided with reset spring (9), is connect by welding with water inlet pipe (2) at the top of the valve body (1), and is opened on the inside of water inlet pipe (2)
Equipped with water inlet (11), described valve body (1) one end is connect by welding with first end cover (15), and logical inside first end cover (15)
It crosses bolt to connect with the second guide sleeve (16), the second guide sleeve (16) side offers the second pilot hole (24), described to push away
Pole socket (10) side is connect by bolt with the second push rod (17), and the second push rod (17) passes through the second pilot hole (24) and passes through weldering
Connect and connect with piston (22), piston (22) side is provided with second end cover (27), and second end cover (27) by bolt with
Guide rod (20) connection, piston (22) side offer third pilot hole (28), and guide rod (20) is oriented to across third
Hole (28) is connect by cooperation with the second push rod (17).
2. fast opening and closing power station exhaust check valve according to claim 1, it is characterised in that: the ram seat (10) and the
One guide sleeve (7) is connect by cooperation with spring pocket (8), and ram seat (10) passes through reset spring (9) and the first guide sleeve
(7) it connects.
3. fast opening and closing power station exhaust check valve according to claim 1, it is characterised in that: valve body (1) bottom is set
It is equipped with relief hole (13), and relief hole (13) side is provided with switch handle (14).
4. fast opening and closing power station exhaust check valve according to claim 1, it is characterised in that: second push rod (17) with
Piston (22) side is respectively arranged with the first sealing ring (18), the second sealing ring (19).
5. fast opening and closing power station exhaust check valve according to claim 1, it is characterised in that: the water inlet pipe (2) and row
Water pipe (3) side offers several pilot holes (25).
6. fast opening and closing power station exhaust check valve according to claim 1, it is characterised in that: second guide sleeve (16)
One end is connect by bolt with second end cover (27), and second end cover (27) side offers gas port (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821583542.6U CN209026258U (en) | 2018-09-27 | 2018-09-27 | Fast opening and closing power station exhaust check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821583542.6U CN209026258U (en) | 2018-09-27 | 2018-09-27 | Fast opening and closing power station exhaust check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209026258U true CN209026258U (en) | 2019-06-25 |
Family
ID=66904991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821583542.6U Active CN209026258U (en) | 2018-09-27 | 2018-09-27 | Fast opening and closing power station exhaust check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209026258U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058528A (en) * | 2018-09-27 | 2018-12-21 | 欧通集团青田万鑫阀门科技有限公司 | Fast opening and closing power station exhaust check valve |
-
2018
- 2018-09-27 CN CN201821583542.6U patent/CN209026258U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058528A (en) * | 2018-09-27 | 2018-12-21 | 欧通集团青田万鑫阀门科技有限公司 | Fast opening and closing power station exhaust check valve |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |