CN112096944A - Nuclear-grade fireproof isolation valve - Google Patents
Nuclear-grade fireproof isolation valve Download PDFInfo
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- CN112096944A CN112096944A CN202010842413.XA CN202010842413A CN112096944A CN 112096944 A CN112096944 A CN 112096944A CN 202010842413 A CN202010842413 A CN 202010842413A CN 112096944 A CN112096944 A CN 112096944A
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- 238000002955 isolation Methods 0.000 title claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000008713 feedback mechanism Effects 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 210000004907 gland Anatomy 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
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- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/222—Shaping of the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/224—Details of bearings for the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/386—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the closure members being rotatable or pivoting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
- F16K27/0218—Butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/46—Mechanical actuating means for remote operation
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a nuclear grade fireproof isolation valve, which comprises: electric actuator, valve body, signal feedback mechanism, the valve body includes: blade, valve barrel are provided with gas passage in the valve barrel, and electric actuator is connected with the blade, and signal feedback mechanism is connected with electric actuator, and signal feedback mechanism sends shut-off signal to electric actuator and gives electric actuator when being used for receiving the signal that is higher than predetermineeing the temperature, and electric actuator is used for receiving signal feedback mechanism's shut-off signal back drive blade and closes gas passage, and nuclear level fire prevention isolating valve still includes: and the sealing mechanism is used for sealing a gap between the blade and the valve cylinder when the blade closes the gas channel. The nuclear-grade fireproof isolation valve is in a structural form integrating fireproof and closed isolation functions, so that the space occupied by system equipment is saved, the production and manufacturing efficiency is improved, the control difficulty and cost are reduced, and convenience is brought to installation and replacement.
Description
Technical Field
The invention belongs to the technical field of nuclear power equipment, and particularly relates to a nuclear-grade fireproof isolation valve.
Background
In the traditional design, a fire-proof valve is arranged on a pipeline of a ventilation system of a primary storage process room in series through an isolation valve, so that the design occupies a larger space, and the control difficulty and cost are increased.
Disclosure of Invention
The invention aims to solve the technical problem of providing the nuclear-grade fireproof isolating valve aiming at the defects in the prior art, so that the space occupied by system equipment is saved, and the production and manufacturing efficiency is improved.
The technical scheme adopted for solving the technical problem of the invention is to provide a nuclear grade fireproof isolation valve, which comprises the following components: electric actuator, valve body, signal feedback mechanism, the valve body includes: the blade, the valve barrel, be provided with gas passage in the valve barrel, the blade sets up in the valve barrel, the blade is used for moving in order to open or close gas passage for the valve barrel, signal feedback mechanism sets up on the valve barrel, electric actuator is connected with the blade, signal feedback mechanism is connected with electric actuator, signal feedback mechanism sends shut-off signal to electric actuator when being used for receiving the signal that is higher than predetermineeing the temperature and gives electric actuator, electric actuator is used for driving the blade and closes gas passage after receiving signal feedback mechanism's shut-off signal, nuclear level fire prevention isolating valve still includes: and the sealing mechanism is used for sealing a gap between the blade and the valve cylinder when the blade closes the gas channel.
Preferably, the sealing mechanism includes: set up the stopper that is used for spacing to the blade in the valve barrel, set up seal groove on blade or stopper, inlay the sealing member in the seal groove, when the blade closed gas passage, the stopper was spacing to the blade, and the sealing member is located between seal groove and the stopper, and the sealing member is used for sealing up the gap between blade and the stopper.
Preferably, the electric actuator includes: the multi-connecting-rod transmission assembly is arranged in the valve cylinder body and is also connected with the blades.
Preferably, the nuclear-grade fire isolation valve further comprises: the connecting rod wall is arranged in the valve barrel, the link arm is fixedly connected with the valve barrel, a link hole is formed in the link arm, and the driving shaft penetrates through the link hole.
Preferably, the multi-link transmission assembly includes: the blade connecting rod 6 is connected with the blade 8, the blade connecting rod 6 is pivoted with the shaft connecting rod 7, the blade connecting rod 6 is pivoted with the intermediate connecting rod 5, the intermediate connecting rod 5 is pivoted with the link arm 3, the driving shaft drives the shaft connecting rod 7 to rotate, and the shaft connecting rod 7 drives the blade connecting rod 6 to move.
Preferably, the nuclear-grade fire isolation valve further comprises: the driving motor is arranged outside the valve cylinder body, the first bearing is sleeved on the driving shaft, and the driving shaft penetrates through the first bearing and is connected with the multi-connecting-rod transmission assembly in the valve cylinder body.
Preferably, the nuclear-grade fire isolation valve further comprises: set up second bearing seat on the valve barrel, set up the second bearing in the second fluting of second bearing seat, the second bearing cover is arranged in on the drive shaft, and first bearing seat, second bearing seat set up respectively in the radial both sides of valve barrel, and nuclear level fire prevention isolating valve still includes: and the shaft end sealing cover is arranged at the end part of the driving shaft and arranged on the second bearing seat.
Preferably, the nuclear-grade fire isolation valve further comprises: the supporting seat is arranged on the valve cylinder body, and the driving motor is arranged on the supporting seat.
Preferably, the nuclear-grade fire isolation valve further comprises: the driving motor is connected with the supporting seat through the first flange.
Preferably, the signal feedback mechanism comprises: when the temperature reaches the preset temperature, the temperature sensor on the fireproof isolation valve is heated and fused, the signal switch is triggered to act to transmit a closing signal to the electric actuating mechanism, and the valve blade is closed under the action of the electric actuating mechanism.
The nuclear-grade fireproof isolation valve is in a structural form integrating fireproof and closed isolation functions, so that the space occupied by system equipment is saved, the production and manufacturing efficiency is improved, the control difficulty and cost are reduced, and convenience is brought to installation and replacement.
Drawings
FIG. 1 is a front view of a nuclear grade fire isolation valve in embodiment 2 of the present invention;
FIG. 2 is a side view of a nuclear grade fire isolation valve in accordance with example 2 of the present invention;
FIG. 3 is a top view of a nuclear grade fire isolation valve in example 2 of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 1 in accordance with the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 4 in the present invention;
FIG. 6 is an enlarged view of a portion of the area I in FIG. 4 according to the present invention;
FIG. 7 is a partial enlarged view of the area C in FIG. 6 in the present invention;
FIG. 8 is an enlarged fragmentary view of area II of FIG. 3 in accordance with the present invention;
FIG. 9 is an enlarged fragmentary view of area III of FIG. 4 in accordance with the present invention;
fig. 10 is a partially enlarged view of the iv region in fig. 5 in the present invention.
In the figure: 1-valve cylinder, 2-drive shaft, 3-link arm, 4-support seat, 5-intermediate link, 6-vane link, 7-shaft link, 8-vane, 9-pivot, 10-pivot, 11-pivot, 12-shaft end cover, 13-drive motor, 14-temperature sensor, 151-first bearing seat, 152-second bearing seat, 161-first bearing, 162-second bearing, 17-washer limit, 18-washer, 19-sealing strip, 20-hexagon bolt, 21-hexagon bolt, 22-hexagon bolt, 23-O-ring, 24-signal switch, 25-snap spring, 26-flat pad, 27-spring pad, 28-nut, 29-cable gland, 30-metal hose, 31-metal hose connector, 32-cushion block, 33-signal switch bracket, 34-hexagonal bolt, 35-flat pad, 36-elastic pad, 37-nut, 38-hexagonal bolt, 39-flat pad, 40-elastic pad, 41-base and 42-limiting block.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
The present embodiment provides a nuclear grade fire isolation valve, including: electric actuator, valve body, signal feedback mechanism, the valve body includes: the blade, the valve barrel, be provided with gas passage in the valve barrel, the blade sets up in the valve barrel, the blade is used for moving in order to open or close gas passage for the valve barrel, signal feedback mechanism sets up on the valve barrel, electric actuator is connected with the blade, signal feedback mechanism is connected with electric actuator, signal feedback mechanism sends shut-off signal to electric actuator when being used for receiving the signal that is higher than predetermineeing the temperature and gives electric actuator, electric actuator is used for driving the blade and closes gas passage after receiving signal feedback mechanism's shut-off signal, nuclear level fire prevention isolating valve still includes: and the sealing mechanism is used for sealing a gap between the blade and the valve cylinder when the blade closes the gas channel.
The nuclear-grade fireproof isolation valve in the embodiment is in a structure form integrating fireproof and airtight isolation functions, so that the space occupied by system equipment is saved, the production and manufacturing efficiency is improved, the control difficulty and cost are reduced, and convenience is brought to installation and replacement.
Example 2
As shown in fig. 1 to 10, the present embodiment provides a nuclear-grade fire isolation valve, including: electric actuator, valve body, signal feedback mechanism, the valve body includes: blade 8, valve barrel 1, be provided with gas passage in the valve barrel 1, blade 8 sets up in valve barrel 1, blade 8 is used for 1 motion in order to open or close gas passage for the valve barrel, signal feedback mechanism sets up on valve barrel 1, electric actuator is connected with blade 8, signal feedback mechanism is connected with electric actuator, signal feedback mechanism sends shut-off signal to electric actuator when being used for receiving the signal that is higher than predetermineeing the temperature and gives electric actuator, electric actuator is used for driving blade 8 to close gas passage after receiving signal feedback mechanism's shut-off signal, nuclear level fire prevention isolating valve still includes: and the sealing mechanism is used for sealing the gap between the blade 8 and the valve cylinder 1 when the blade 8 closes the gas channel.
Preferably, the sealing mechanism includes: set up the stopper 42 that is used for spacing to blade 8 in the valve barrel 1, set up seal groove on blade 8 or stopper 42, inlay the sealing member in the seal groove, when blade 8 closed gas passage, stopper 42 was spacing to blade 8, and the sealing member is located between seal groove and stopper 42, and the sealing member is used for the gap between seal blade 8 and the stopper 42. Specifically, the sealing groove in this embodiment is disposed on the blade 8. Specifically, the sealing member in this embodiment is a strip-shaped sealing strip 19.
Preferably, the electric actuator includes: the valve comprises a driving motor 13, a driving shaft 2 connected with the driving motor 13, and a multi-connecting-rod transmission assembly connected with the driving shaft 2 and used for transmission, wherein the multi-connecting-rod transmission assembly is arranged in a valve cylinder 1, and is also connected with a blade 8. The multi-connecting-rod transmission assembly is welded with the interior of the valve cylinder body 1.
Preferably, the nuclear-grade fire isolation valve further comprises: the connecting rod wall is arranged in the valve cylinder body 1, the link arm 3 is fixedly connected with the valve cylinder body 1, a link hole is formed in the link arm 3, and the driving shaft 2 penetrates through the link hole.
Preferably, the multi-link transmission assembly includes: the blade connecting rod 6 is connected with the blade 8, the blade connecting rod 6 is pivoted with the shaft connecting rod 7, the blade connecting rod 6 is pivoted with the intermediate connecting rod 5, the intermediate connecting rod 5 is pivoted with the link arm 3, the driving shaft 2 drives the shaft connecting rod 7 to rotate, and the shaft connecting rod 7 drives the blade connecting rod 6 to move.
Preferably, the nuclear-grade fire isolation valve further comprises: the driving mechanism comprises a first bearing seat 151 arranged on the valve cylinder 1 and a first bearing 161 arranged in a first groove of the first bearing seat 151, wherein the driving motor 13 is arranged outside the valve cylinder 1, the first bearing 161 is sleeved on the driving shaft 2, and the driving shaft 2 penetrates through the first bearing 161 to be connected with a multi-link transmission assembly in the valve cylinder 1.
Preferably, the nuclear-grade fire isolation valve further comprises: set up second bearing frame 152 on valve barrel 1, set up second bearing 162 in the second fluting of second bearing frame 152, second bearing 162 overlaps and arranges in on drive shaft 2, and first bearing frame 151, second bearing frame 152 set up respectively in the radial both sides of valve barrel 1, and nuclear level fire prevention isolating valve still includes: and a shaft end cover 12 provided at an end portion of the drive shaft 2, the shaft end cover 12 being provided on the second bearing housing 152.
The drive shaft 2 is connected to the valve cylinder 1 via a first bearing housing 151 and a second bearing housing 152.
Preferably, the nuclear-grade fire isolation valve further comprises: the supporting seat 4 is arranged on the valve cylinder 1, and the driving motor 13 is arranged on the supporting seat 4. The supporting seat 4 is disposed on the first bearing seat 151, and the supporting seat 4 is connected to the first bearing seat 151 through a second flange.
Preferably, the nuclear-grade fire isolation valve further comprises: the first flange, driving motor 13 and supporting seat 4 pass through first flange connection.
Preferably, the signal feedback mechanism comprises: when the temperature reaches the preset temperature, the temperature sensor 14 on the fireproof isolation valve is heated and fused, the signal switch 24 is triggered to act to transmit a closing signal to the electric actuating mechanism, and the valve blade 8 is closed under the action of the electric actuating mechanism, so that the fireproof function is achieved. The temperature sensor 14 can be replaced at any time. The signal switch 24 and the temperature sensor 14 are arranged on the valve cylinder 1. Specifically, the preset temperature in this embodiment is 70 ℃. On the other hand, because the sealing element is arranged on the blade 8, when the blade 8 is closed, the sealing element is extruded to be completely attached to the limiting block 42, and a sealing effect is achieved. The nuclear-grade fireproof isolating valve in the embodiment belongs to the initiation in China, fills the blank in China, and initiates a two-in-one structure.
In particular, nuclear-grade fire isolation valves are used in the event of a sodium fire in a radioactive environment.
Specifically, the method for partially assembling the nuclear-grade fire isolating valve in this embodiment is as follows:
the first bearing seat 151 and the second bearing seat 152 are respectively welded on two radial sides of the valve cylinder 1, the first bearing 161 is installed in a first slot on the first bearing seat 151, and the second bearing 162 is installed in a second slot on the second bearing seat 152. The link arm 3 is welded in the valve cylinder 1, and then the driving shaft 2 passes through the first bearing 161, the link hole of the link arm 3 and the second bearing 162 in sequence, and the shaft link 7 is fixed on both sides of the link arm 3. Fixing the blade connecting rod 6 on the blade 8 by using an M10 multiplied by 25 hexagon bolt 21, a phi 10 flat pad 26 and a phi 10 elastic pad 27, fixing the blade connecting rod 6 and the shaft connecting rod 7 by using a pivot 9 and a phi 18 snap spring 25, fixing the blade connecting rod 6 and the intermediate connecting rod 5 by using the pivot 10 and the phi 18 snap spring 25, and fixing the intermediate connecting rod 5 and the connecting rod 3 by using a pivot 11 and a phi 18 snap spring 25 to form a multi-link transmission assembly to transmit force to control the action of the blade 8; the shaft end cover 12 is fixed on the second bearing seat 152 at one end of the valve body through an M10 multiplied by 30 hexagon bolt 20, a phi 10 flat pad 26 and a phi 10 elastic pad 27; a gasket 18, a gasket limit 17 and an O-shaped ring 23 are sequentially arranged in a first groove on a first bearing seat 151, and a supporting seat 4 passes through the driving shaft 2 and then is fixed on the first bearing seat 151 at the other end through an M10 multiplied by 30 hexagon bolt 20, a phi 10 flat cushion 26 and a phi 10 elastic cushion 27; the blade 8 is opened to be in an opening state, and the sealing strip 19 is arranged in the trapezoidal groove on the blade 8; the base 41 is welded to the valve cartridge 1.
The vane 8 in this embodiment is eccentric to the valve cylinder 1 and the drive shaft 2, while the drive shaft 2 is eccentric to the center of the valve cylinder 1. When the vanes 8 move from closing to opening, the driving shaft 2 rotates to drive the shaft connecting rod 7 in the multi-connecting-rod transmission assembly to rotate, and the shaft connecting rod 7 rotates to drive the vane connecting rod 6 to move. Since the link arm 3 is welded to the valve cylinder 1 and the intermediate link 5 is connected to both the link arm 3 and the vane link 6, the vane link 6 is lifted horizontally at the start of the operation. In the lifting process, the intermediate link 5 is forced to rotate around the pivot 11, and after the intermediate link 5 rotates to a certain angle (namely, the blade link 6 is lifted to a certain height), the blade link 6 starts to rotate to drive the blade 8 to be opened to 90 degrees, and the valve is in an opening state.
In this embodiment, the electric actuator 13 is fixed to the support seat 4 of the valve body by the M10 × 35 hexagon bolt 22, the Φ 10 flat washer 26, the Φ 10 elastic washer 27, and the M10 nut 28, and the electric actuator 13 locks and fixes the driving shaft 2. The driving shaft 2 can be driven to rotate by rotating a hand wheel on the electric actuating mechanism 13 or electrifying the electric actuating mechanism 13.
In this embodiment, the signal feedback mechanism includes: the temperature sensor 14, the signal switch 24, the cable gland 29, the metal hose 30, the metal hose joint 31, the cushion block 32, the signal switch bracket 33, the M3 multiplied by 45 hexagon bolt 34, the phi 3 flat pad 35, the phi 3 elastic pad 36, the M3 nut 37, the M8 multiplied by 25 hexagon bolt 38, the phi 8 flat pad 39 and the phi 8 elastic pad 40. The temperature sensor 14 is arranged in a base 41 on the valve cylinder 1; the signal switch 24, the cushion block 32 and the signal switch bracket 33 are fixed in sequence by an M3 multiplied by 45 hexagon bolt 34, a phi 3 flat cushion 35, a phi 3 elastic cushion 36 and an M3 nut 37, and the signal switch bracket 33 is fixed on a base 41 by an M8 multiplied by 25 hexagon bolt 38, a phi 8 flat cushion 39 and a phi 8 elastic cushion 40; the signal switch 24 is connected with the driving motor 13 by a cable gland 29, a metal hose 30 and a metal hose connector 31. When the valve is in an opening state, when the temperature sensor 14 is heated and fused, the signal switch 24 is triggered, the signal switch 24 sends a closing signal to the driving motor 13, the driving motor 13 rotates to drive the driving shaft 2 to rotate, and the multi-link transmission assembly connected with the driving shaft 2 acts to close the blades 8.
The nuclear-grade fireproof isolation valve in the embodiment is in a structure form integrating fireproof and airtight isolation functions, so that the space occupied by system equipment is saved, the production and manufacturing efficiency is improved, the control difficulty and cost are reduced, and convenience is brought to installation and replacement.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A nuclear grade fire isolation valve, comprising: electric actuator, valve body, signal feedback mechanism, the valve body includes: the blade, the valve barrel, be provided with gas passage in the valve barrel, the blade sets up in the valve barrel, the blade is used for moving in order to open or close gas passage for the valve barrel, signal feedback mechanism sets up on the valve barrel, electric actuator is connected with the blade, signal feedback mechanism is connected with electric actuator, signal feedback mechanism sends shut-off signal to electric actuator when being used for receiving the signal that is higher than predetermineeing the temperature and gives electric actuator, electric actuator is used for driving the blade and closes gas passage after receiving signal feedback mechanism's shut-off signal, nuclear level fire prevention isolating valve still includes: and the sealing mechanism is used for sealing a gap between the blade and the valve cylinder when the blade closes the gas channel.
2. The nuclear grade fire isolation valve of claim 1, wherein the sealing mechanism comprises: set up the stopper that is used for spacing to the blade in the valve barrel, set up seal groove on blade or stopper, inlay the sealing member in the seal groove, when the blade closed gas passage, the stopper was spacing to the blade, and the sealing member is located between seal groove and the stopper, and the sealing member is used for sealing up the gap between blade and the stopper.
3. The nuclear grade fire isolation valve of claim 1, wherein the electric actuator comprises: the multi-connecting-rod transmission assembly is arranged in the valve cylinder body and is also connected with the blades.
4. The nuclear grade fire isolation valve of claim 3, further comprising: the connecting rod wall is arranged in the valve barrel, the link arm is fixedly connected with the valve barrel, a link hole is formed in the link arm, and the driving shaft penetrates through the link hole.
5. The nuclear grade fire isolation valve of claim 4, wherein the multi-link drive assembly comprises: the driving shaft drives the shaft connecting rod to rotate, and the shaft connecting rod drives the blade connecting rod to move.
6. The nuclear grade fire isolation valve of claim 3, further comprising: the driving motor is arranged outside the valve cylinder body, the first bearing is sleeved on the driving shaft, and the driving shaft penetrates through the first bearing and is connected with the multi-connecting-rod transmission assembly in the valve cylinder body.
7. The nuclear grade fire isolation valve of claim 6, further comprising: set up second bearing seat on the valve barrel, set up the second bearing in the second fluting of second bearing seat, the second bearing cover is arranged in on the drive shaft, and first bearing seat, second bearing seat set up respectively in the radial both sides of valve barrel, and nuclear level fire prevention isolating valve still includes: and the shaft end sealing cover is arranged at the end part of the driving shaft and arranged on the second bearing seat.
8. The nuclear grade fire isolation valve of claim 3, further comprising: the supporting seat is arranged on the valve cylinder body, and the driving motor is arranged on the supporting seat.
9. The nuclear grade fire isolation valve of claim 8, further comprising: the driving motor is connected with the supporting seat through the first flange.
10. The nuclear grade fire isolation valve of any one of claims 1 to 9, wherein the signal feedback mechanism comprises: when the temperature reaches the preset temperature, the temperature sensor on the fireproof isolation valve is heated and fused, the signal switch is triggered to act to transmit a closing signal to the electric actuating mechanism, and the valve blade is closed under the action of the electric actuating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842413.XA CN112096944A (en) | 2020-08-20 | 2020-08-20 | Nuclear-grade fireproof isolation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010842413.XA CN112096944A (en) | 2020-08-20 | 2020-08-20 | Nuclear-grade fireproof isolation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112096944A true CN112096944A (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010842413.XA Pending CN112096944A (en) | 2020-08-20 | 2020-08-20 | Nuclear-grade fireproof isolation valve |
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| CN (1) | CN112096944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114811116A (en) * | 2021-12-27 | 2022-07-29 | 贵州航天智慧农业有限公司 | Multifunctional three-way intelligent butterfly valve |
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| CN208935405U (en) * | 2018-11-14 | 2019-06-04 | 东莞市博雅实业有限公司 | A kind of smoke-and fire-proof regulating valve |
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| CN202040392U (en) * | 2011-04-20 | 2011-11-16 | 上海理工大学 | Fire resisting damper provided with temperature response device and used for air conditioner system |
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| CN114811116A (en) * | 2021-12-27 | 2022-07-29 | 贵州航天智慧农业有限公司 | Multifunctional three-way intelligent butterfly valve |
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Application publication date: 20201218 |
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| RJ01 | Rejection of invention patent application after publication |