CN102635699B - Regulating cut-off-type discharging exhaust valve - Google Patents
Regulating cut-off-type discharging exhaust valve Download PDFInfo
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- CN102635699B CN102635699B CN 201210112208 CN201210112208A CN102635699B CN 102635699 B CN102635699 B CN 102635699B CN 201210112208 CN201210112208 CN 201210112208 CN 201210112208 A CN201210112208 A CN 201210112208A CN 102635699 B CN102635699 B CN 102635699B
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- valve rod
- valve
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- cage
- valve body
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Abstract
The invention relates to a valve, and in particular relates to a regulating cut-off-type discharging exhaust valve, wherein a valve frame is configured on the upper end of a valve body; a stuffing chamber is configured in the valve body; a rolling bearing and a valve rod nut are configured in the top end of the valve frame; a power-driven head is connected with the valve rod nut; one end of a valve rod is fixed on the valve rod nut and the other end of the valve rod penetrates through the stuffing chamber and extends into a valve opening at the center of the valve body; a pore plate is configured at the edge of the valve opening in the valve body; a cage sleeve is configured on the pore plate; and a pressing nut is configured between the cage sleeve and the stuffing chamber. According to the regulating cut-off-type discharging exhaust valve provided by the invention, the structure form of the cage-type throttling pore plate type enables the valve to obtain the required specific flow rate displacement quantity under different apertures; and the exhaust of the flow rate is carried out in classifications, after the exhaust pressure is subjected to multiple attenuation by a restriction orifice, the noise can be reduced obviously, and the cavitation effect of the seal surface of the valve body is reduced.
Description
Technical field
The present invention relates to a kind of valve, relate in particular to a kind of adjusting cut-off type to empty drain tap.
Background technique
Can under safe condition, normally use for the boiler that guarantees the thermal power generation project at present, need be before the boiler safety valve events, have one or one group to be used for the valve of safe condition discharging, the applying working condition of this or one group of valve is the steam of temperature 〉=540 ℃, pressure 〉=10.0MPa normally.Be that the high temperature that adopts, the power station type stop valve of high pressure use as outlet valve at present.Shortcoming is: 1. Pai Fang the vapor volume steam that can not control 2. high temperature, high pressure effectively acts directly on and is easy to produce cavitation effect on the spool, cause the damage of valve sealing face, influencing the flap of sealing effect 3. valves of valve and valve seat is in friction in the moment of closing and rotatablely moves, friction under this condition of high temperature rotatablely moves and also can cause the damage of valve sealing face, influences the sealing effect of valve.4. stop valve is the moment discharging to the discharging of steam, and the noise that produces is usually more than 100dB.
Summary of the invention
The present invention is directed to above-mentioned deficiency provides a kind of adjusting cut-off type to empty drain tap.
The present invention adopts the following technological scheme that goes up:
A kind of adjusting cut-off type of the present invention comprises valve body, vavle shelf, rolling bearing, valve rod, Stem Mut, electrical header, filler chamber to empty drain tap; Vavle shelf is arranged in described valve body upper end, filler chamber is arranged in the valve body, arrange rolling bearing and Stem Mut in the top of vavle shelf, electrical header is connected with Stem Mut, and valve rod one end and the Stem Mut fixedly the other end pass the valve port place that filler chamber extends into the valve body center; Also comprise orifice plate, cage cover, gland nut; Described orifice plate is arranged in the valve port edge in the valve body, arranges the cage cover on the orifice plate, arranges gland nut between cage cover and the filler chamber.
Adjusting cut-off type of the present invention is to empty drain tap, the cross section of described filler chamber becomes stepped shaft, arranges the selfsealings filler on first ladder of filler chamber bottom, and piezometer ring is arranged in the upper end of selfsealings filler, arrange block on second ladder, arrange four fens rings between block and the valve interior wall; The top end of valve body is arranged support plate and is pind down plate and both all are nested with in filler chamber, clamping plate are arranged in the both sides, close top of filler chamber, have groove between the top of filler chamber and the valve rod, Packing seat is arranged in the bottom of groove, fill filler on the Packing seat, compress the filler gland on the filler, arrange hold-down grid on the filler gland, clamping plate are connected by bolt with pressing plate.
Adjusting cut-off type of the present invention is to empty drain tap, and described valve rod comprises upper valve rod and lower valve rod; Mesh between upper valve rod and the lower valve rod, upper valve rod becomes deformable convex surface with the Surface of action of lower valve rod, and stem head is arranged in the bottom of lower valve rod.
Adjusting cut-off type of the present invention is to empty drain tap, and parcel folding circle in the outside of the engagement place between described upper valve rod and the lower valve rod is arranged guide plate on the upper valve rod on folding circle top.
Adjusting cut-off type of the present invention is to empty drain tap, cage and outer cage in being divided into of described cage cover, and the cage window is all arranged in the bottom of interior cage and outer cage, interior cage window is consistent with outer cage window center.
Beneficial effect
Adjusting cut-off type provided by the invention is to empty drain tap, and the structural type that the cage throttle orifice is board-like makes valve obtain needed particular flow rate discharge amount under different opening.The discharging classification of flow is carried out, discharge pressure through restriction orifice many after decaying noise can obviously reduce and the valve body sealing surface cavitation effect be weakened.The flap sealing surface directly acts on the sealing surface of valve body by thrust, but not spin friction acts on valve body sealing surface, makes that the valve seal performance is more lasting.The torque that many rotating electric actuator produce, the forward thrust that changes valve rod into through the adjustment of the structure of double stub shaft can reduce the power of electric actuator effectively.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is cage nested structure schematic representation of the present invention;
Fig. 3 is cage nested structure plan view of the present invention;
Fig. 4 is upper valve rod structural representation of the present invention;
Fig. 5 is lower valve rod structural representation of the present invention;
1 is valve body among the figure, the 2nd, and orifice plate, the 3rd, cage cover, the 4th, lower valve rod, the 5th, valve port, the 6th, vavle shelf, the 7th, rolling bearing, the 8th, Stem Mut, the 9th, electrical header, the 10th, upper valve rod, the 11st, guide plate, the 12nd, folding circle, the 13rd, filler chamber, the 14th, gland nut, the 15th, stem head, the 16th, the selfsealings filler, the 17th, pressure ring, the 18th, block, 19 is four fens rings, the 20th, support plate, the 21st, pin down plate, the 22nd, clamping plate, the 23rd, Packing seat, the 24th, filler, the 25th, filler gland, the 26th, hold-down grid, the 27th, bolt.
Embodiment
The present invention is described in more detail below in conjunction with accompanying drawing:
As shown in the figure: a kind of adjusting cut-off type comprises valve body 1 to empty drain tap, orifice plate 2, cage cover 3, lower valve rod 4, valve port 5, vavle shelf 6, rolling bearing 7, Stem Mut 8, electrical header 9, upper valve rod 10, guide plate 11, folding circle 12, filler chamber 13, gland nut 14, stem head 15, stuffing box packing 16, pressure ring 17, support plate 20 pins down plate 21, clamping plate 22, Packing seat 23, filler gland 25.
Vavle shelf 6 is arranged in valve body 1 upper end, filler chamber 13 is arranged in the valve body 1, arrange rolling bearing 7 and Stem Mut 8 in the top of vavle shelf 6, electrical header 9 is connected with Stem Mut 8, and valve rod one end and the Stem Mut 8 fixedly the other end pass valve port 5 places that filler chamber 13 extends into valve body 1 center; Orifice plate 2 is arranged in valve port 5 edges in the valve body 1, arranges cage cover 3 on the orifice plate 2, arranges gland nut 14 between cage cover 3 and the filler chamber 13.
The cross section of filler chamber 13 becomes stepped shaft, arranges selfsealings filler 16 on first ladder of filler chamber 13 bottoms, arranges block 18 on upper end layout piezometer ring 17, the second ladders of selfsealings filler 16, arranges four fens rings 19 between block 18 and valve body 1 inwall; The top end of valve body 1 is arranged support plate 20 and is pind down plate 21 and both all are nested with in filler chamber 13, clamping plate 22 are arranged in the both sides, close top of filler chamber 13, have groove between the top of filler chamber 13 and the valve rod, Packing seat 23 is arranged in the bottom of groove, fill filler 24 on the Packing seat 23, compress filler gland 25 on the filler 24, arrange hold-down grid 26 on the filler gland 25, clamping plate 22 are connected by bolt 27 with pressing plate 26.
Engagement between upper valve rod 10 and the lower valve rod 4, upper valve rod 10 becomes deformable convex surface with the Surface of action of lower valve rod 4, and stem head 15 is arranged in the bottom of lower valve rod 4.
The outside parcel folding circle 12 of the engagement place between upper valve rod 10 and the lower valve rod 4 is arranged guide plate 11 on the upper valve rod 10 on folding circle 12 tops.Cage and outer cage in being divided into of cage cover 3, the cage window is all arranged in the bottom of interior cage and outer cage, interior cage window is consistent with outer cage window center.
Valve drives the transmission of power
By electrical header 9(electric actuator) rotation change hard iron and drive Stem Mut 8 rotations, the rotation of Stem Mut 8 drive upper valve rod 10 moves up and down again, the transmission of this form that moves up and down by folding circle 12 changes the push-pull effort that moves up and down to lower valve rod 4 into, thereby obtains the effect of valve folding.
Valve flow is regulated
When lower valve rod 4 moved up and down, the flow section area of orifice plate 2 changed, thus the effect of adjusted flow.Lower valve rod can all make high compressed steam discharge (stroke of regulating valve optionally) rapidly as circulation area because of the window area in the cage cover when valve wide open.
The decompression of valve, noise reduction, anti-cavitation erosion function high compressed steam by the diagram importer when flowing into valve body, after the different effect that subtracts discharge orifice of multistage distribution in the orifice plate of labyrinth, the pressure of steam and flow all reach decay, steam after this decay is because of the corresponding minimizing of kinetic energy to the cavitation erosion of the sealing surface of valve of weakening of pressure and flow, to the impact noise of valve and pipeline also corresponding weakening.
Claims (4)
1. regulate cut-off type to empty drain tap for one kind, comprise valve body (1), vavle shelf (6), rolling bearing (7), valve rod, Stem Mut (8), electrical header (9), filler chamber (13); Vavle shelf (6) is arranged in described valve body (1) upper end, filler chamber (13) is arranged in the valve body (1), arrange rolling bearing (7) and Stem Mut (8) in the top of vavle shelf (6), electrical header (9) is connected with Stem Mut (8), and valve rod one end and Stem Mut (8) the fixedly the other end pass the valve port (5) that filler chamber (13) extends into valve body (1) center and locate; It is characterized in that: also comprise orifice plate (2), cage cover (3), gland nut (14); Described orifice plate (2) is arranged in valve port (5) edge in the valve body (1), and orifice plate (2) is gone up and arranged cage cover (3), arranges gland nut (14) between cage cover (3) and the filler chamber (13); The cross section of filler chamber (13) becomes stepped shaft, arrange selfsealings fillers (16) on first ladder of filler chamber (13) bottom, piezometer ring (17) is arranged in the upper end of selfsealings filler (16), arrange block (18) on second ladder, arrange four fens rings (19) between block (18) and valve body (1) inwall; The top end of valve body (1) is arranged support plate (20) and is pind down plate (21) and both all are nested with in filler chamber (13), clamping plate (22) are arranged in the both sides, close top of filler chamber (13), have groove between the top of filler chamber (13) and the valve rod, Packing seat (23) is arranged in the bottom of groove, Packing seat (23) is gone up and is filled filler (24), compress filler gland (25) on the filler (24), filler gland (25) is gone up and is arranged hold-down grid (26), and clamping plate (22) are connected by bolt (27) with pressing plate (26).
2. adjusting cut-off type according to claim 1 is characterized in that empty drain tap: described valve rod comprises upper valve rod (10) and lower valve rod (4); Engagement between upper valve rod (10) and the lower valve rod (4), upper valve rod (10) becomes deformable convex surface with the Surface of action of lower valve rod (4), and stem head (15) is arranged in the bottom of lower valve rod (4).
3. adjusting cut-off type according to claim 2 is to empty drain tap, it is characterized in that: the outside parcel folding circle (12) of the engagement place between described upper valve rod (10) and the lower valve rod (4), the upper valve rod (10) on folding circle (12) top is gone up and is arranged guide plate (11).
4. adjusting cut-off type according to claim 1 is characterized in that empty drain tap: cage and outer cage in being divided into of described cage cover (3), and the cage window is all arranged in the bottom of interior cage and outer cage, interior cage window is consistent with outer cage window center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210112208 CN102635699B (en) | 2012-04-17 | 2012-04-17 | Regulating cut-off-type discharging exhaust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210112208 CN102635699B (en) | 2012-04-17 | 2012-04-17 | Regulating cut-off-type discharging exhaust valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102635699A CN102635699A (en) | 2012-08-15 |
| CN102635699B true CN102635699B (en) | 2013-07-17 |
Family
ID=46620214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210112208 Expired - Fee Related CN102635699B (en) | 2012-04-17 | 2012-04-17 | Regulating cut-off-type discharging exhaust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635699B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU208881U1 (en) * | 2021-05-04 | 2022-01-19 | Открытое акционерное общество "Торговый дом "Воткинский завод" | SHUT-OFF AND REGULATING VALVE |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878331A (en) * | 2012-10-13 | 2013-01-16 | 南通国电电站阀门有限公司 | Self seal guiding type stop check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227240Y (en) * | 1995-02-27 | 1996-05-15 | 上海平安高压调节阀门厂 | Minimum discharge controlled valve for boiler water supply pump |
| CN201909106U (en) * | 2010-12-31 | 2011-07-27 | 无锡华益电力阀门有限公司 | Soot blowing pressure reducing valve |
| CN201982704U (en) * | 2011-01-26 | 2011-09-21 | 凯泰阀门(集团)有限公司 | Low-noise stepwise pressure-reducing flow-control valve |
| CN202597748U (en) * | 2012-04-17 | 2012-12-12 | 南京华宁阀门有限公司 | Adjusting stop-type exhaust valve facing air |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MA33988B1 (en) * | 2010-01-13 | 2013-02-01 | Bayard Sas | Valves range |
-
2012
- 2012-04-17 CN CN 201210112208 patent/CN102635699B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2227240Y (en) * | 1995-02-27 | 1996-05-15 | 上海平安高压调节阀门厂 | Minimum discharge controlled valve for boiler water supply pump |
| CN201909106U (en) * | 2010-12-31 | 2011-07-27 | 无锡华益电力阀门有限公司 | Soot blowing pressure reducing valve |
| CN201982704U (en) * | 2011-01-26 | 2011-09-21 | 凯泰阀门(集团)有限公司 | Low-noise stepwise pressure-reducing flow-control valve |
| CN202597748U (en) * | 2012-04-17 | 2012-12-12 | 南京华宁阀门有限公司 | Adjusting stop-type exhaust valve facing air |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU208881U1 (en) * | 2021-05-04 | 2022-01-19 | Открытое акционерное общество "Торговый дом "Воткинский завод" | SHUT-OFF AND REGULATING VALVE |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635699A (en) | 2012-08-15 |
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Granted publication date: 20130717 Termination date: 20200417 |
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| CF01 | Termination of patent right due to non-payment of annual fee |