CN206753664U - A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device - Google Patents
A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device Download PDFInfo
- Publication number
- CN206753664U CN206753664U CN201720202654.1U CN201720202654U CN206753664U CN 206753664 U CN206753664 U CN 206753664U CN 201720202654 U CN201720202654 U CN 201720202654U CN 206753664 U CN206753664 U CN 206753664U
- Authority
- CN
- China
- Prior art keywords
- servomotor
- seal assembly
- closing valve
- steam turbine
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000003466 welding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 35
- 239000012530 fluid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 210000003660 reticulum Anatomy 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 231100001261 hazardous Toxicity 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010736 steam turbine oil Substances 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of water supply pump Quick closing valve for steam turbine servomotor to seal take-up device, including servomotor body, seal assembly and valve rod, opening is provided with servomotor body, one end of valve rod enters servomotor body interior through opening, seal assembly is arranged in described opening and is connected with valve stem seal, also include fastener, fastener is fixedly connected with seal assembly and servomotor body respectively.The utility model adds a fastener on the seal assembly of servomotor, produce the effect of pretension to the sealing ring of seal assembly, further add the sealing of seal assembly, prevent the generation of oil leak, restriction loss is reduced, improves the operational efficiency of unit.
Description
Technical field
The utility model belongs to quick-closing valve technical field, specifically, is related to a kind of water supply pump Quick closing valve for steam turbine
Servomotor seals take-up device.
Background technology
Quick-closing valve is also referred to as main inlet throttle-stop valve, and it is the main closing knot between feed pump turbine steam inlet pipeline and steam turbine
Structure, it can separate steam turbine air inlet immediately in emergency situations, make unit quick shutdown, and quick-closing valve is shut down in feed pump turbine
When be to close, start in steam turbine and be shown in a fully open operation during normal operation.
Quick-closing valve of the prior art is mainly made up of valve body and servomotor two parts, new to steam when quick-closing valve is not opened
Vapour passes to the chamber of main valve dish through stainless steel filtering net, and valve disc is pressed on valve under steam power and the effect of servomotor spring closing force
On seat, the path that initial steam enters Turbine Flow Path is cut off.Equalizing valve is housed, due to being opened in quick-closing valve in main valve dish
During, adjusting air valve is closed, and with the lifting of equalizing valve, the pressure before and after main valve dish tends to balance quickly, makes
Winner's valve disc lifting force greatly reduces.
Servomotor part is mainly by structures such as oil cylinder, piston, spring, spring base, experiment piston, piston plate and seal assemblies
Into, wherein, in addition to 3 hydraulic fluid ports, start hydraulic fluid port, speed closes hydraulic fluid port and oil return opening.
Servomotor is fixed by bolts on bonnet, and servomotor part is the executing agency that quick-closing valve opens and closes, and is passed through
When starting adjuster unlatching quick-closing valve, servomotor seal assembly of the prior art is sealed by sealing ring using oil pressure,
Prolonged work, the easy aged deterioration of sealing ring easily occur alignment error in Renewal process, gone out, it is necessary to often change
The problems such as existing setting angle inaccuracy, occurs, and can thus produce the problem of oil leak and occur, the problems such as holding fire hazardous.This
Outside, quick-closing valve servomotor seal assembly of the prior art is while speed is closed oil and is passed through on the left of piston plate, is incited somebody to action by oil pressure
Seal assembly is compressed, and the compression of seal assembly will be influenceed by being closed the foundation of oil pressure due to speed and being released, therefore the seal assembly is deposited
There is in oil leak hidden danger and repeatedly seepage.
For problem above, spy proposes the utility model.
Utility model content
For overcome the deficiencies in the prior art, it is dynamic that the utility model provides a kind of water supply pump Quick closing valve for steam turbine oil
Secret envelope take-up device, including servomotor body, seal assembly and valve rod are provided with opening on servomotor body, and the one of valve rod
End enters servomotor body interior through opening, and seal assembly is arranged in described opening and is connected with valve stem seal, also wrapped
Fastener is included, fastener is fixedly connected with seal assembly and servomotor body respectively.
The utility model installs a fastener outside seal assembly, and when opening quick-closing valve, fastener can incite somebody to action
Sealing ring tenses, and not only tightly by oil pressure, and sealing ring tension can be further increased into sealing using flange is tensed
The sealing of component, prevent the generation of oil leak.
Further, the center of seal assembly and fastener is respectively arranged with the through hole passed through for valve rod, and valve rod passes through
Through hole is connected with piston plate.
Further, fastener is bolted with seal assembly, is welded with servomotor body.
Further, described fastener has centered on described tension flange and passed through for valve rod to tense flange
Through hole circular configuration.
Further, the periphery for tensing flange is connected with servomotor body, tense the inner circumferential of flange by connector with it is close
Sealing assembly connects.
Further, tense the part that flange is connected with servomotor body and use welding.
Further, described connector is bolt, and the diameter for tensing flange is more than the diameter of seal assembly, tenses flange
The end face contacted with seal assembly is bolted.
Further, tense flange and be evenly arranged with multiple phases on the circumference centered on same radius centered on the center of circle
With the circular hole of diameter, multiple multiple screws corresponding with the circular hole are provided with seal assembly, bolt will through circular hole and screw
Flange is tensed to connect with seal assembly.
Further, be connected with piston rod positioned at the intrinsic one end of servomotor on valve rod, piston rod and seal assembly it
Between be tightly connected.
Further, seal assembly is provided with sealing ring with servomotor body and piston rod junction respectively.
Compared with prior art, the beneficial effects of the utility model are as follows：Seal assembly of the utility model in servomotor
On add a fastener, further add the sealing of seal assembly and servomotor and piston rod, anti-leak-stopping
The generation of oil, reduces restriction loss, improves the operational efficiency of unit.
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Accompanying drawing is further understood from, this practicality as a part of the present utility model for providing to of the present utility model
New schematic description and description is used to explain the utility model, but does not form to improper restriction of the present utility model.
Obviously, drawings in the following description are only some embodiments, to those skilled in the art, are not paying creation
Property work on the premise of, can also according to these accompanying drawings obtain other accompanying drawings.In the accompanying drawings：
Fig. 1：Seal component architecture schematic diagram of the present utility model；
Fig. 2：The structural representation of the present utility model for tensing flange；
Fig. 3：The sectional view of the present utility model for tensing flange；
Fig. 4：Water supply pump Quick closing valve for steam turbine servomotor of the present utility model seals take-up device；
Fig. 5：The structural representation of quick-closing valve of the present utility model.
Wherein, 1- seal assemblies, 2- screws, 3- valve rods, 4- piston rods, 5- circular holes, 6- tense flange, 7- servomotor sheets
Body, 8- cylinders housing portion, 9- valve seats, 10- main valves dish, 11- equalizing valves, 12- nuts, 13- pilot sleeves, 14- sealing glands sleeve,
15- door rods bleeder port, 16- bonnets, 17- experiments piston, 18- pressure gauge connections, 19- pistons, 20- springs, 21- spring bases, 22-
Clamp nut, 23- steam filter screens, D- steam inlets, F- start hydraulic fluid port, K- gas leakage mouth, E- speed and close hydraulic fluid port, T1- oil return openings.
It should be noted that these accompanying drawings and word description are not intended as limits design of the present utility model in any way
Scope, but be that those skilled in the art illustrate concept of the present utility model by reference to specific embodiment.
Embodiment
As Figure 1-5, the utility model provides a kind of water supply pump Quick closing valve for steam turbine servomotor sealing and tensed
Device, including servomotor body 7, seal assembly 1 and valve rod 3, opening are provided with servomotor body 7, one end of valve rod 3 passes through
Opening is entered inside servomotor body 7, and seal assembly 1 is arranged in described opening and is tightly connected with valve rod 3, in addition to tight
It is fixedly mounted with and puts, fastener is fixedly connected with seal assembly 1 and servomotor body 7 respectively.
The center of seal assembly 1 and fastener of the present utility model is respectively arranged with the through hole passed through for valve rod 3, valve rod
3 are connected with piston plate by through hole.
Embodiment 1
Fastener in the water supply pump Quick closing valve for steam turbine servomotor sealing take-up device of the present embodiment is one
Flange 6 is tensed, can be the structure that other are fixed on seal assembly 1, it is solid to be that two half of flanges are docking together
It is scheduled on seal assembly 1, or regularly or irregularly structure, structure as shown in Figure 2 are of the present utility model tight
It is fixedly mounted with and is set to a tension flange 6, a tension flange 6 is installed outside seal assembly 1, when opening quick-closing valve, tenses flange 6
Sealing ring can be tensed, not only tightly by oil pressure, and can utilize and tense flange 6 by sealing ring tension further increase
The sealing of seal assembly 1, prevents the generation of oil leak.
Tension flange 6 of the present utility model is connected by bolt with seal assembly 1, and the sealing in seal assembly 1 is enclosed
The effect of pretension is arrived, while the shell for tensing flange 6 and servomotor welds together, and further, adds seal assembly 1
With the sealing of servomotor body 7.
As shown in figure 4, the diameter for tensing flange 6 is more than the diameter of seal assembly 1, the inner circumferential of described tension flange 6 with
Seal assembly 1 is bolted, and seal assembly is connected by the periphery for tensing flange 6 by being welded with servomotor body 7, enters one
Step adds its sealing with servomotor body 7, it is therefore prevented that oil is spilt from piston 19 and servomotor body 7.
Embodiment 2
As shown in Figures 2 and 3,3 same diameters are uniformly distributed on the tension flange 6 in the present embodiment centered on the center of circle
Circular hole 5, the circular hole 5 in the present embodiment are explained exemplified by 3, according to the specific size for tensing flange 6, can also be adopted
The structure for tensing flange 6 and seal assembly 1 is fixed with multiple circular holes 5, is not limited only to 3 circular holes 5.On seal assembly 1
The position corresponding with described circular hole 5 is provided with 3 screws 2, tenses flange 6 and is connected to seal assembly 1 by turnbuckle
On, the valve rod 3 of the present embodiment passes through the center for tensing flange 6.
The present embodiment sets the installation site of 3 bolts on flange 6 is tensed, and can also set multiple installation sites, this
Embodiment using the installation site for being uniformly arranged bolt is closely connected with seal assembly 1 to tense flange 6, can will be close
Seal is carried out and tensed, and is sealed, it is therefore prevented that the generation of oil leak.
Further scheme, one end on valve rod 3 in servomotor body 7 are connected with piston rod, piston rod and sealing
It is tightly connected between component 1.
Further scheme, the junction between seal assembly 1 and piston rod 4 are provided with sealing ring, and the present embodiment uses O
Type fluorine cushion rubber, the junction of seal assembly 1 and the shell of servomotor are provided with O-shaped fluorine cushion rubber, are set in above-mentioned two position close
The purpose of seal is to further be tightly connected place, prevents the generation of oil leak.
Embodiment 3
As shown in figure 5, the present embodiment is the structure of quick-closing valve of the present utility model, quick-closing valve is mainly by valve body and servomotor
Two parts form.
Valve body is mainly by cylinder housing portion 8, valve seat 9, main valve dish 10, equalizing valve 11, nut 12, pilot sleeve 13, gas
Big envelope cylinder 14, door rod bleeder port 15, valve rod 3, bonnet 16, clamp nut 22 and steam filter screen 23 form.Bonnet 16 is applied not only to
The sealing of air chamber end face, and be also the connector between valve and servomotor body 7.
Servomotor part is by servomotor body 7, piston 19, spring 20, spring base 21, experiment piston, piston plate, tension method
Orchid 6 and seal assembly 1 form, the pressure being provided with pressure gauge connection 18 in pressure gauge test servomotor body 7.Wherein, it is oily
Motivation part has three hydraulic fluid ports to start oily F, the oily E and oil return T1 in speed pass.
The operation principle of water supply pump Quick closing valve for steam turbine of the present utility model is as follows：
In the state of quick-closing valve is not opened, initial steam is passing to master after steam inlet D by stainless steam filter screen 23
The chamber of valve disc 10, main valve dish 10 are pressed on valve seat 9 under steam power and the effect of the closing forces of servomotor spring 20, initial steam
Path into Turbine Flow Path is cut off.Equalizing valve 11 is housed, due in quick-closing valve opening process, adjusting in main valve dish 10
Air throttle is closed, with the lifting of equalizing valve 11.Pressure before and after main valve dish 10 tends to balance quickly so that main valve
The lifting force of dish 10 greatly reduces.
In quick-closing valve opening process or after quick-closing valve closes, some steam is along pilot sleeve 13 and sealing gland sleeve 14
Between interval leak out, gas leakage from gas leakage mouth K draw.And after quick-closing valve full open, main valve dish 10 and guide thimble 13
Sealing surface be bonded, the gas leakage of valve rod 3 is blocked.As shown in figure 5, servomotor is fixed by bolts on bonnet 16, servomotor portion
Point it is the executing agency that quick-closing valve opens and closes, when opening quick-closing valve by starting adjuster, servomotor part is done following dynamic
Make, start the activated hydraulic fluid port F of oil and pass to the right-hand member of piston 19, piston 19 overcomes spring force 21 to be pressed towards work in the presence of oil pressure
Disk is filled in, piston 19 is in contact with the sealing surface of piston plate, speed is closed oil and is passed through through the fast hydraulic fluid port E that closes on the left of piston plate afterwards, with
The foundation of piston plate and fast-cut oil pressure, startup oil beginning is controlled to release, then piston plate and for example same overall structure of piston
Part, in the presence of the pressure difference of both sides, persistently move right up to spacing by experiment piston 17, due to the right-hand member of valve rod 3 and piston plate
Link together, so quick-closing valve is also opened therewith while piston plate moves.
The closing of quick-closing valve is operated by security system, if fast pass action occurs for any one link in security system, all
Speed can be made to close oily decompression, under the effect of the power of spring 20, piston 19 disengages with piston plate, and the speed on the left of piston plate closes oil discharge, living
Plug disk is pushed to closed position at once with valve rod 3, main valve dish 10.
Because servomotor seal assembly is sealed by sealing ring using oil pressure, prolonged work, sealing ring is easy
Easily there is alignment error, it is necessary to often change in Renewal process in aged deterioration, the problems such as setting angle inaccuracy occurs and goes out
Existing, the problem of thus producing oil leak, occurs, the problems such as holding fire hazardous.In addition, quick-closing valve oil of the prior art is dynamic
Secret sealing assembly 1 is while speed is closed oil and is passed through on the left of piston plate, is compressed seal assembly 1 by oil pressure, because speed closes oil
The foundation of oil pressure and release and will influence the compression of seal assembly, therefore the seal assembly is deposited 1 in oil leak hidden danger and repeatedly oozed
Leakage.
Water supply pump Quick closing valve for steam turbine servomotor sealing take-up device of the present utility model is installed outside seal assembly 1
One tension flange 6, when opening quick-closing valve, tension flange 6 can stretch sealing ring outward, not only tightly by oil pressure,
And using flange 6 is tensed sealing ring can be tensed to the sealing for further increasing seal assembly 1 outward, prevent oil leak
Produce.
Tension flange 6 of the present utility model carries out pretension effect to seal assembly 1, avoids due to the frequent start and stop band of small steam turbine
The loosening of the servomotor seal assembly 1 come, occur so as to cause speed to close oil along the leakage phenomenon of piston rod 4.
Embodiment in above-described embodiment can be further combined or replace, and embodiment is only new to this practicality
The preferred embodiment of type is described, and not spirit and scope of the present utility model are defined, new not departing from this practicality
On the premise of type design philosophy, various change that professional and technical personnel in the art make to the technical solution of the utility model and
Improve, belong to the scope of protection of the utility model.
Claims (10)
1. a kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device, including servomotor body, seal assembly and
Valve rod, opening is provided with servomotor body, one end of valve rod enters servomotor body interior through opening, and seal assembly is set
Put and be connected in described opening with valve stem seal, it is characterised in that also including fastener, fastener respectively with sealing group
Part is fixedly connected with servomotor body.
2. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 1, its feature
It is, the center of seal assembly and fastener is respectively arranged with the through hole passed through for valve rod, and valve rod is connected with work by through hole
Fill in disk.
3. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 1, its feature
It is, fastener is bolted with seal assembly, is welded with servomotor body.
4. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing according to claim 1-3 any one tenses dress
Put, it is characterised in that described fastener has centered on described tension flange and led to for what valve rod passed through to tense flange
The circular configuration in hole.
5. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 4, its feature
It is, the periphery for tensing flange is connected with servomotor body, and the inner circumferential for tensing flange is connected by connector with seal assembly.
6. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 5, its feature
It is, tenses the part that flange is connected with servomotor body and use welding.
7. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 5, its feature
It is, described connector is bolt, and the diameter for tensing flange is more than the diameter of seal assembly, tenses flange and is connect with seal assembly
Tactile end face is bolted.
8. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 7, its feature
It is, tenses the circle that flange is evenly arranged with multiple same diameters centered on the center of circle on the circumference centered on same radius
Hole, is provided with multiple multiple screws corresponding with the circular hole on seal assembly, bolt through circular hole and screw will tense flange and
Seal assembly connects.
9. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 1, its feature
It is, is connected with piston rod positioned at the intrinsic one end of servomotor on valve rod, is tightly connected between piston rod and seal assembly.
10. a kind of water supply pump Quick closing valve for steam turbine servomotor sealing take-up device according to claim 9, its feature
It is, seal assembly is provided with sealing ring with servomotor body and piston rod junction respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202654.1U CN206753664U (en) | 2017-03-03 | 2017-03-03 | A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720202654.1U CN206753664U (en) | 2017-03-03 | 2017-03-03 | A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206753664U true CN206753664U (en) | 2017-12-15 |
Family
ID=60609750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720202654.1U Active CN206753664U (en) | 2017-03-03 | 2017-03-03 | A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206753664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075517A (en) * | 2019-12-25 | 2020-04-28 | 霍尔果斯明轩能源科技有限公司 | Fastening device for steam valve of steam turbine |
-
2017
- 2017-03-03 CN CN201720202654.1U patent/CN206753664U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075517A (en) * | 2019-12-25 | 2020-04-28 | 霍尔果斯明轩能源科技有限公司 | Fastening device for steam valve of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203906813U (en) | Pneumatic and manual normally-open emergency cut-off valve | |
| CN108131473A (en) | The check valve of decompression function built in a kind of band | |
| CN102822581A (en) | Control valve having live loaded packing follower with leak-off and independent secondary seal | |
| KR20130029420A (en) | Blocking device of pipe leak | |
| CN206753664U (en) | A kind of water supply pump Quick closing valve for steam turbine servomotor seals take-up device | |
| CN208331354U (en) | A kind of electromagnet bleeder valve | |
| CN204300382U (en) | High Pressure Difference multi-stage sleeve modulating valve | |
| CN118979973A (en) | A pressure automatic balancing flat gate valve | |
| US2483163A (en) | Shutoff valve | |
| CN202280871U (en) | Novel main seal structure of hydroelectric water inlet ball valve | |
| CN210600226U (en) | A double block bottom valve | |
| CN212672406U (en) | Novel stop valve for high-temperature high-pressure large-caliber power plant | |
| CN114673815B (en) | An accelerated pressure relief device and overpressure protection method for a main steam valve station | |
| CN207005315U (en) | Air bag stop valve | |
| CN109424332B (en) | Natural gas well constant pressure throttling arrangement | |
| CN109899531A (en) | A kind of gas combined valve | |
| CN210770278U (en) | Double-seat butterfly valve | |
| CN210252501U (en) | Coal pulverizer shutoff door system | |
| CN201373168Y (en) | Bolt type quick-closing valve | |
| CN205371655U (en) | Ultra -low temperature butterfly valve | |
| CN204922025U (en) | Fire -resistant type low temperature quick action emergency valve | |
| CN210318517U (en) | High-temperature high-pressure emptying valve | |
| CN208763698U (en) | A kind of improved steam turbine gland system | |
| CN106641293A (en) | Pneumatic fluorine-lined corrugated pipe single seat adjusting valve | |
| CN110388486B (en) | Anti-scouring composite valve group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |