CN203743536U - Electromagnetic safety valve for boiler superheater system - Google Patents
Electromagnetic safety valve for boiler superheater system Download PDFInfo
- Publication number
- CN203743536U CN203743536U CN201420166909.XU CN201420166909U CN203743536U CN 203743536 U CN203743536 U CN 203743536U CN 201420166909 U CN201420166909 U CN 201420166909U CN 203743536 U CN203743536 U CN 203743536U
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- Prior art keywords
- spring
- valve
- boiler superheater
- superheater system
- shield
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- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 8
- 102000004315 Forkhead Transcription Factors Human genes 0.000 abstract 1
- 108090000852 Forkhead Transcription Factors Proteins 0.000 abstract 1
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The utility model discloses an electromagnetic safety valve for a boiler superheater system, which relates to the electromagnetic safety valve and aims to solve a problem of the existing electromagnetic discharge valve that an auxiliary valve is small in a sealing force and is subjected to leakage easily since the auxiliary valve is sealed with help of a medium. According to the electromagnetic safety valve disclosed by the utility model, a guide sleeve is installed on a valve body; a cooler is installed on the upper end face of the valve body; the cooler is in sliding fit with a valve rod; a spring shield is installed on the cooler; a lower spring base and an upper spring base are arranged in the spring shield from bottom up; a spring is arranged between the lower spring base and the upper spring base; a baffle ring is arranged below the lower spring base; a disk spring is arranged below the baffle ring; the valve rod passes through the spring shield, the upper spring base, the lower spring base, the baffle ring and the disk spring; a protective cover is installed on the spring shield; the upper end of the valve rod is placed in the protective cover; a fork head portion of a fork lever is connected with the upper end of the valve rod; a rod portion of the fork lever passes through the protective cover and is connected with a connecting rod; the connecting rod is connected with an electromagnet; the electromagnet is electrically connected with a pressure transmitter. The electromagnetic safety valve disclosed by the utility model is applied to the boiler superheater system.
Description
Technical field
The utility model relates to a kind of electromagnetic valve, is specifically related to a kind of electromagnetic valve for boiler superheater system, in order to ensure the safe operation of boiler, belongs to valve field.
Background technique
It is at present domestic that on superheater, use is mainly solenoid blowout valve (PCV).Solenoid blowout valve (PCV) all adopts major-minor valve arrangement.In the time that pressure reaches specified value, secondary valve events, drives main valve events to discharge excess steam, ensures the safe operation of boiler.Because secondary valve is by medium-tight, sealing force is less, and therefore, secondary valve is very easy to leak.And valve mechanism complexity, maintenance load is large.Valve chatter is refused to jump and is happened occasionally.Bring certain hidden danger to the safe operation of power plant.
Model utility content
The utility model is for the secondary valve that solves existing solenoid blowout valve is by medium-tight, and sealing force is little, is prone to the problem of leakage, and then a kind of electromagnetic valve for boiler superheater system is provided.
The utility model in order to solve the problems of the technologies described above taked technological scheme is:
Electromagnetic valve for boiler superheater system described in the utility model comprises valve body, flap, sleeve, valve seat and valve rod, and described valve body is arranged on valve seat, and flap is arranged in sleeve, and the lower end of valve rod coordinates with flap; The described electromagnetic valve for boiler superheater system also comprises guide sleeve, connecting rod, cooler, pressure transmitter, baffle ring, lower spring cup, spring, spring shield, upper spring seat, fork arm, electromagnet, protective housing, dish spring and outlet pipe;
Guide sleeve is sleeved on the outside of sleeve, and guide sleeve is arranged on valve body, on the upper-end surface of described valve body, cooler is installed, cooler coordinates with valve stem slides, spring shield is installed on cooler, lower spring cup and upper spring seat are arranged in spring shield from the bottom to top, between lower spring cup and upper spring seat, be provided with spring, the below of lower spring cup is provided with baffle ring, the below of baffle ring is provided with dish spring, described valve rod is through spring shield, upper spring seat, lower spring cup, baffle ring and dish spring, on described spring shield, protective housing is installed, the upper end of valve rod is placed in protective housing, the jaw portion of fork arm is connected with the upper end of valve rod, the bar portion of fork arm passes protective housing and is connected with connecting rod, described connecting rod is connected with electromagnet, electromagnet is electrically connected with pressure transmitter, outlet pipe and guide sleeve internal communication.
Preferred: the described electromagnetic valve for boiler superheater system also comprises Stroke Control ring, described Stroke Control ring is fixedly mounted on valve rod, and Stroke Control ring is between cooler upper junction plate and guide sleeve.So arrange, be convenient to control the stroke of valve rod.
Preferred: the described electromagnetic valve for boiler superheater system also comprises stop screw, described stop screw is threaded with upper spring seat, and the axis of stop screw is vertical with the axis of valve rod, on spring shield, have notch, the outer end of stop screw is movable in notch.So arrange, define the compression stroke of spring.
Preferred: the described electromagnetic valve for boiler superheater system also comprises adjusts silk braid and screw, described adjustment silk braid is arranged between spring shield and valve rod, and adjusting silk braid is threaded with spring shield, valve rod is slidably matched with adjustment silk braid, adjust the lower end abutment of silk braid on upper spring seat, screw is arranged on to be adjusted on silk braid, and the bottom end of screw and spring shield lean.So arrange, be convenient to adjust the stroke of spring, thereby set the Set pressure of safety valve.
Preferred: the described electromagnetic valve for boiler superheater system also comprises single direction thrust ball bearing, and described single direction thrust ball bearing is arranged between upper spring seat and valve rod.
The utility model compared with prior art has following effect:
Electromagnetic valve for boiler superheater system of the present utility model is single valve structure, cancel the secondary valve of solenoid blowout valve, when boiler operatiopn, safety valve is by spring force sealing, when boiler pressure reaches authorized pressure value, pressure transmitter output valve opening signal makes electromagnet produce suction, by the connecting rod on safety valve and valve rod pull-up spring, valve clack of safety valve is automatically opened and is discharged excess steam under the effect of high pressure steam, makes boiler step-down.In the time that boiler pressure drops to authorized pressure, pressure transmitter sends pass valve signal, tripping magnet power supply, and valve is throttle down under spring-force driven dual.By valve body and spring isolation, prevent that spring is subject to hot steam impact and the spring that deforms is constant to ensure the rigidity of spring by guide sleeve and cooler, make the stable performance of spring.Electromagnetic valve of the present utility model is simple in structure, be convenient to maintenance, seals by spring force, and sealing force is large, has eliminated valve leak problem, stopped valve chatter and refused to jump, and ensured the safe operation of power plant.
Brief description of the drawings
Fig. 1 is the structural drawing for the electromagnetic valve of boiler superheater system;
Fig. 2 is that the A of Fig. 1 is to view;
In figure: 1 is valve body, 2 is flap, and 3 is guide sleeve, and 4 is valve seat, 5 is sleeve, and 6 is connecting rod, and 7 is Stroke Control ring, and 8 is cooler, 9 is pressure transmitter, and 10 is baffle ring, and 11 is lower spring cup, and 12 is valve rod, 13 is spring, and 14 is spring shield, and 15 is upper spring seat, and 16 is single direction thrust ball bearing, 17 is stop screw, and 18 for adjusting silk braid, and 21 is fork arm, and 28 is electromagnet, 29 is protective housing, and 36 is screw, and 41 is dish spring, and 42 is outlet pipe.
Embodiment
Elaborate with reference to the accompanying drawings the utility model preferred embodiment below.
Embodiment: the electromagnetic valve for boiler superheater system of present embodiment comprises valve body 1, flap 2, sleeve 5, valve seat 4 and valve rod 12, described valve body 1 is arranged on valve seat 4, flap 2 is arranged in sleeve 5, and the lower end of valve rod 12 coordinates with flap 2; The described electromagnetic valve for boiler superheater system also comprises guide sleeve 3, connecting rod 6, cooler 8, pressure transmitter 9, baffle ring 10, lower spring cup 11, spring 13, spring shield 14, upper spring seat 15, fork arm 21, electromagnet 28, protective housing 29, dish spring 41 and outlet pipe 42;
Guide sleeve 3 is sleeved on the outside of sleeve 5, and guide sleeve 3 is arranged on valve body 1, cooler 8 is installed on the upper-end surface of described valve body 1, cooler 8 is slidably matched with valve rod 12, spring shield 14 is installed on cooler 8, lower spring cup 11 and upper spring seat 15 are arranged in spring shield 14 from the bottom to top, between lower spring cup 11 and upper spring seat 15, be provided with spring 13, the below of lower spring cup 11 is provided with baffle ring 10, the below of baffle ring 10 is provided with dish spring 41, described valve rod 12 is through spring shield 14, upper spring seat 15, lower spring cup 11, baffle ring 10 and dish spring 41, on described spring shield 14, protective housing 29 is installed, the upper end of valve rod 12 is placed in protective housing 29, the jaw portion of fork arm 21 is connected with the upper end of valve rod 12, the bar portion of fork arm 21 passes protective housing 29 and is connected with connecting rod 6, described connecting rod 6 is connected with electromagnet 28, electromagnet 28 is electrically connected with pressure transmitter 9, outlet pipe 42 and guide sleeve 3 internal communication, the described electromagnetic valve for boiler superheater system also comprises Stroke Control ring 7, and described Stroke Control ring 7 is fixedly mounted on valve rod 12, and Stroke Control ring 7 is between cooler 8 upper junction plates and guide sleeve 3, the described electromagnetic valve for boiler superheater system also comprises stop screw 17, described stop screw 17 is threaded with upper spring seat 15, and the axis of stop screw 17 is vertical with the axis of valve rod 12, on spring shield 14, have notch, the outer end of stop screw 17 is movable in notch, the described electromagnetic valve for boiler superheater system also comprises adjusts silk braid 18 and screw 36, described adjustment silk braid 18 is arranged between spring shield 14 and valve rod 12, and adjusting silk braid 18 is threaded with spring shield 14, valve rod 12 is slidably matched with adjustment silk braid 18, adjust the lower end abutment of silk braid 18 on upper spring seat 15, screw 36 is arranged on to be adjusted on silk braid 18, and the bottom end of screw 36 and spring shield 14 lean, the described electromagnetic valve for boiler superheater system also comprises single direction thrust ball bearing 16, and described single direction thrust ball bearing 16 is arranged between upper spring seat 15 and valve rod 12.
Further: described valve seat 4 adopts nozzle type valve seat, the spout application Laval-cavity nozzle design of valve nozzle.The very high velocity of sound that exceedes of valve seat outlet steam flow rate.Valve displacement is very large, makes boiler with speed decompression faster, ensure the safe operation of boiler.
Further: described valve seat 4 sealing surfaces adopt cobalt base hard alloy built-up welding, and sealing surface hardness is large, wear-resisting antiscour, the life-span is long.
Further: described flap 2 adopts thermal stress compensation formula structure, it is divided into two bodies is flap and preheating flap, object is the sealing that makes full use of the hot shaping of thermal valve lobe and ensure valve, and thermal valve lobe is made tongue type structure, to utilize the elasticity of its minor variations to prevent the leakage of valve.
Further: described valve rod 12 heads and flap 2 surface of contact places cobalt base hard alloy built-up welding, hardness is high, wear-resisting, and the life-span is long, ensures its use.
Present embodiment is the exemplary illustration to this patent just, does not limit its protection domain, and those skilled in the art can also change its part, as long as no the Spirit Essence that exceeds this patent, all in the protection domain of this patent.
Claims (5)
1. for the electromagnetic valve of boiler superheater system, comprise valve body (1), flap (2), sleeve (5), valve seat (4) and valve rod (12), described valve body (1) is arranged on valve seat (4), flap (2) is arranged in sleeve (5), and the lower end of valve rod (12) coordinates with flap (2); It is characterized in that: the described electromagnetic valve for boiler superheater system also comprises guide sleeve (3), connecting rod (6), cooler (8), pressure transmitter (9), baffle ring (10), lower spring cup (11), spring (13), spring shield (14), upper spring seat (15), fork arm (21), electromagnet (28), protective housing (29), dish spring (41) and outlet pipe (42);
Guide sleeve (3) is sleeved on the outside of sleeve (5), and guide sleeve (3) is arranged on valve body (1), cooler (8) is installed on the upper-end surface of described valve body (1), cooler (8) is slidably matched with valve rod (12), spring shield (14) is installed on cooler (8), lower spring cup (11) and upper spring seat (15) are arranged in spring shield (14) from the bottom to top, between lower spring cup (11) and upper spring seat (15), be provided with spring (13), the below of lower spring cup (11) is provided with baffle ring (10), the below of baffle ring (10) is provided with dish spring (41), described valve rod (12) is through spring shield (14), upper spring seat (15), lower spring cup (11), baffle ring (10) and dish spring (41), protective housing (29) is installed on described spring shield (14), the upper end of valve rod (12) is placed in protective housing (29), the jaw portion of fork arm (21) is connected with the upper end of valve rod (12), the bar portion of fork arm (21) passes protective housing (29) and is connected with connecting rod (6), described connecting rod (6) is connected with electromagnet (28), electromagnet (28) is electrically connected with pressure transmitter (9), outlet pipe (42) and guide sleeve (3) internal communication.
2. the electromagnetic valve for boiler superheater system according to claim 1, it is characterized in that: the described electromagnetic valve for boiler superheater system also comprises Stroke Control ring (7), it is upper that described Stroke Control ring (7) is fixedly mounted on valve rod (12), and Stroke Control ring (7) is positioned between cooler (8) upper junction plate and guide sleeve (3).
3. the electromagnetic valve for boiler superheater system according to claim 2, it is characterized in that: the described electromagnetic valve for boiler superheater system also comprises stop screw (17), described stop screw (17) is threaded with upper spring seat (15), and the axis of stop screw (17) is vertical with the axis of valve rod (12), spring shield has notch on (14), and the outer end of stop screw (17) is movable in notch.
4. according to claim 1, the electromagnetic valve for boiler superheater system described in 2 or 3, it is characterized in that: the described electromagnetic valve for boiler superheater system also comprises adjusts silk braid (18) and screw (36), described adjustment silk braid (18) is arranged between spring shield (14) and valve rod (12), and adjusting silk braid (18) is threaded with spring shield (14), valve rod (12) is slidably matched with adjustment silk braid (18), adjust the lower end abutment of silk braid (18) on upper spring seat (15), screw (36) is arranged on to be adjusted on silk braid (18), and the bottom end of screw (36) and spring shield (14) lean.
5. the electromagnetic valve for boiler superheater system according to claim 1, it is characterized in that: the described electromagnetic valve for boiler superheater system also comprises single direction thrust ball bearing (16), described single direction thrust ball bearing (16) is arranged between upper spring seat (15) and valve rod (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166909.XU CN203743536U (en) | 2014-04-08 | 2014-04-08 | Electromagnetic safety valve for boiler superheater system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166909.XU CN203743536U (en) | 2014-04-08 | 2014-04-08 | Electromagnetic safety valve for boiler superheater system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743536U true CN203743536U (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166909.XU Expired - Lifetime CN203743536U (en) | 2014-04-08 | 2014-04-08 | Electromagnetic safety valve for boiler superheater system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203743536U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633197A (en) * | 2015-02-28 | 2015-05-20 | 吴江市东吴机械有限责任公司 | Main steam safety valve |
| CN105066101A (en) * | 2015-09-11 | 2015-11-18 | 中国船舶重工集团公司第七�三研究所 | Safety protection system suitable for marine supercharged boiler |
| CN105257873A (en) * | 2015-10-14 | 2016-01-20 | 武汉锅炉集团阀门有限责任公司 | Controllable double-protection fall lift spring safety valve and boiler steam-water system |
| CN106763952A (en) * | 2017-02-10 | 2017-05-31 | 哈电集团哈尔滨电站阀门有限公司 | A kind of steam security valve |
| CN109441430A (en) * | 2018-12-05 | 2019-03-08 | 西安石油大学 | A kind of device for the cooling electronic device in logging tool |
| CN112879617A (en) * | 2021-01-27 | 2021-06-01 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
-
2014
- 2014-04-08 CN CN201420166909.XU patent/CN203743536U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633197A (en) * | 2015-02-28 | 2015-05-20 | 吴江市东吴机械有限责任公司 | Main steam safety valve |
| CN105066101A (en) * | 2015-09-11 | 2015-11-18 | 中国船舶重工集团公司第七�三研究所 | Safety protection system suitable for marine supercharged boiler |
| CN105066101B (en) * | 2015-09-11 | 2017-02-08 | 中国船舶重工集团公司第七�三研究所 | Safety protection system suitable for marine supercharged boiler |
| CN105257873A (en) * | 2015-10-14 | 2016-01-20 | 武汉锅炉集团阀门有限责任公司 | Controllable double-protection fall lift spring safety valve and boiler steam-water system |
| CN105257873B (en) * | 2015-10-14 | 2018-08-17 | 武汉锅炉集团阀门有限责任公司 | The double protection fall lift type spring safety valves of controllable type and boiler steam and water circuit |
| CN106763952A (en) * | 2017-02-10 | 2017-05-31 | 哈电集团哈尔滨电站阀门有限公司 | A kind of steam security valve |
| CN109441430A (en) * | 2018-12-05 | 2019-03-08 | 西安石油大学 | A kind of device for the cooling electronic device in logging tool |
| CN109441430B (en) * | 2018-12-05 | 2022-02-08 | 西安石油大学 | Device for cooling electronic device in logging tool |
| CN112879617A (en) * | 2021-01-27 | 2021-06-01 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
| CN112879617B (en) * | 2021-01-27 | 2021-12-10 | 哈电集团哈尔滨电站阀门有限公司 | Spring type safety valve and assembling method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230517 Address after: Building 334, No. 28, Sanxin District, Xiangfang District, Harbin City, Heilongjiang Province, 150046 Patentee after: Harbin Shuangli Power Station Valve Co.,Ltd. Address before: No. 289-4 Xusheng Street, Xiangfang District, Harbin City, Heilongjiang Province, 150046 Patentee before: Wang Tao |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |