CN101776169A - Nuclear grade valve electric device - Google Patents
Nuclear grade valve electric device Download PDFInfo
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- CN101776169A CN101776169A CN201010132738A CN201010132738A CN101776169A CN 101776169 A CN101776169 A CN 101776169A CN 201010132738 A CN201010132738 A CN 201010132738A CN 201010132738 A CN201010132738 A CN 201010132738A CN 101776169 A CN101776169 A CN 101776169A
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Abstract
The invention provides a nuclear grade valve electric device which can operate stably in a nuclear power plant containment vessel and has the function of moment overload protection function, and the magnitude of moment overload protection is adjustable. The nuclear grade valve electric device comprises an actuating mechanism linked to a motor output shaft and a control mechanism driven by the actuating mechanism, wherein the actuating mechanism comprises a moment control assembly and a travel control assembly; the control mechanism comprises a microswitch assembly. The moment control assembly comprises a fixed bracket, a resetting part and a displacement converting part. The fixed bracket is fixedly arranged in a case; one end of the displacement converting part is linked to the motor output shaft, and the other end is linked to the microswitch assembly. The fixed bracket is provided with an installation hole, and the displacement converting part rotates circumferentially in the installation hole. The resetting part is located between the displacement converting part and the fixed bracket and realizes resetting of the displacement converting part after the displacement converting part rotates circumferentially along the installation hole. When a motor moves exceeding a safe range during operation, the moment control assembly can trigger the microswitch assembly and stop the motor.
Description
Technical field
The present invention relates to a kind of valve technology field, especially a kind of nuclear grade valve electric device.
Background technique
Exhausted day by day current of resource, nuclear energy becomes the first-selected new energy of more and more national, and is also more and more outstanding for the proportion in the electric energy structure of China.In November, 2007 State Council approved " national nuclear power developing special topic planning (2005-2020) ", according to planning, to the year two thousand twenty, China's nuclear power operation electric motor power strives for reaching 4,000 ten thousand kilowatts, is building 1,800 ten thousand kilowatts.Nuclear power construction scale according to newly-started construction in 15 years and operation estimates that roughly nuclear power projects construction fund total demand is about 4,500 hundred million RMB.The use of nuclear grade valve electric device is almost monopolized by foreign vendor in the nuclear power station that moves now at home, and the K1 class electric device for valve that especially uses in nuclear power plant containment shell all relies on imported France bernards' products at present.At present domestic for technology and safety requirement the most the production of strict K1 class nuclear grade valve electric device also do not have which producer can be by using approval, therefore domestic nuclear grade valve electric device still is in an infancy in research and development and use aspect.Conventional valves Electric actuator and valve are used, and the closure or openness of control valve, valve comprises valve body, valve rod, handwheel, spool, worm gear, worm screw, motor, spool places in the cavity of valve body, one end and the spool of valve rod are fixed, the other end and handwheel interlock, and worm gear set is located on the valve rod, end of worm screw and worm gear interlock, the other end and motor output shaft interlock; The conventional valves Electric actuator comprises and the actuator of motor output shaft interlock and the control mechanism that drives by actuator, control mechanism includes the control circuit that can detect motor torque value and valve rod travel value, actuator has guaranteed valve opening under the adjusting of control mechanism and the stroke when closing is in the value range of setting, also guarantees the work when motor play automatic stall motor during greater than rating value simultaneously.Control mechanism in the conventional valves Electric actuator is by electronic component, chip, the control circuit that control program etc. constitute, comprise the electronics sensing element in its circuit, high temperature because of nuclear power station inside, envirment factors such as high pressure and nuclear power radiation are extremely serious to the influence and the interference of sensing element, so the complex environment factor must cause situations such as movable valve electric installation internal electronic equipment cisco unity malfunction in the nuclear power plant containment shell, thereby cause the instability of electric device for valve self work, and make conventional valves in nuclear power plant containment shell, normally to use, again because the nuclear power station enclose inside, the staff can't enter inside easily and keep in repair, and has influence on the working efficiency of nuclear power station especially.In addition; because the influence of the factor of this particular surroundings of nuclear power station; current electric device for valve lack can be in nuclear power plant containment shell the moment overload protection and the stroke limit function of reliable operation, therefore can't guarantee its safety and reliable operation in nuclear power plant containment shell.Reason to sum up, a kind of domestic autonomous production, its Safety function can in nuclear power station, be carried out, and security of operation, reliable, economic electric device for valve become the problem of present technique field each scientific research personnel's research and development.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming and defect that prior art exists, and provide a kind of in nuclear power plant containment shell also can stable operation have the moment overload protection function and a nuclear grade valve electric device of can regulate moment overload protection size.
The technical solution adopted for the present invention to solve the technical problems is: a kind of nuclear grade valve electric device, include and the actuator of motor output shaft interlock and the control mechanism that drives by actuator, described actuator includes Torque Control assembly and Stroke Control assembly, control mechanism includes the sensitive switch assembly, the output terminal of described Torque Control assembly and motor output shaft axially links, the Torque Control assembly comprises fixing frame, return unit and displacement conversion part, described fixing frame is fixedly arranged in the casing, one end of displacement conversion part and motor output shaft interlock, the other end and the interlock of sensitive switch assembly, described fixing frame is provided with mounting hole, mounting hole and displacement conversion part are suitable, the displacement conversion part is positioned at mounting hole to be done circumferentially to rotate, and return unit is resetting between displacement conversion part and the fixing frame and after constituting the displacement conversion part and rotating in a circumferential direction along mounting hole.When play in the safety range appears surpassing in motor in running, Torque Control mechanism will trigger the sensitive switch assembly, and the sensitive switch assembly is the stall motor, thereby avoid the moment overload of valve, and it is safe and reliable to guarantee that valve moves.Can draw simultaneously the relation of displacement and angular transition between return unit and displacement conversion part, make to cause that for much moment this factor of startup of sensitive switch assembly has played controlled regulating action according in advance calculating.In addition, described displacement conversion part comprises displacement conversion part body and straight pin, displacement conversion part body is a tubulose, displacement conversion part body is provided with along the axial screw setting of displacement conversion part body and penetrates the guide groove of displacement conversion part body, guide groove has two at least, straight pin is placed in the guide groove and extends to the displacement conversion part this is external, mounting hole on the described fixing frame is cylindric, the mounting hole inwall offers the guide rail for the straight pin motion, guide rail is provided with along the mounting hole axial direction, and number may is consistent with the guide groove number.The displacement conversion part can transform into circumferential angular deflection with axial power quickly and easily, thus detection and protection when realizing to the motor play.
The further setting of the present invention is: the described motor output shaft the other end of its output terminal relatively is arranged with damping stroke spring, damping stroke spring one end and motor output shaft are fixed, the other end and fixing frame are fixed, be installed with moment push rod on the motor output shaft with the motor output shaft interlock, moment push rod and motor output shaft are positioned on the same axis, the link the other end of an end of moment push rod and motor output shaft places in the displacement conversion part and with the intrinsic straight pin of displacement conversion part and conflicts, constitute interlock with straight pin, the link the other end of an end of displacement conversion part and moment push rod is installed with central shaft, central shaft and displacement conversion part are positioned on the same axis, the displacement conversion part is by this central shaft and sensitive switch assembly, described return unit is a spiral spring, spiral spring one end and displacement conversion part are fixed, the other end and fixing frame are fixed, described sensitive switch assembly comprises moment adjustment dish, the switch selective pan, switch block and sensitive switch body, described moment adjustment dish is fixed on the central shaft, the switch selective pan is mobilizable to be sheathed on the central shaft, and intermittently link with moment adjustment dish, switch block is fixed on the moment adjustment dish, and links with the sensitive switch body.The setting of this damping stroke spring, the one, reduce the impact of electric device for valve when the open and close valve, the 2nd, control the displacement amount of motor shaft play by spring, make the amount of displacement of play be within the allowed band of Torque Control mechanism, make the size of displacement amount and the size of control moment form fixing proportionate relationship simultaneously.Because the motor output shaft end is not suitable for repacking, the size of moment push rod end then just can arbitrarily be set according to the size of displacement conversion part center hole by the setting of moment push rod, thereby satisfies situation about fitting each other.
The further setting of the present invention is: the Stroke Control assembly comprises fixing frame, driving component, spacing stroke shaft, caging bolt, declutch shift shaft, link, travelling nut, limit assembly, shifting block, be fixed in the clamp pin on the fixing frame, and be sheathed on torsion spring and torsion spring seat on the spacing stroke shaft, fixing frame is provided with the axis hole that passes for spacing stroke shaft, spacing stroke shaft and fixing frame are circumferential rotation and axial limiting, driving component one end and live axle interlock, the other end and the interlock of spacing stroke shaft, be arranged with caging bolt with the link the other end of an end of driving component on the spacing stroke shaft, caging bolt and spacing stroke shaft circumferentially link, be arranged with travelling nut on the caging bolt with the caging bolt screw-thread fit, link is sheathed on the spacing stroke shaft and with spacing stroke shaft and rotates, declutch shift shaft is set up on the link and with link and circumferentially links, mobilizable being located on the caging bolt and with travelling nut of limit assembly linked, on the link and declutch shift shaft link an end the right the other end link with shifting block, shifting block is sheathed on the central shaft, shifting block and central shaft circumferentially rotate, shifting block and the interlock of sensitive switch assembly, the torsion spring seat is fixedly arranged on the spacing stroke shaft and with spacing stroke shaft and links, be arranged with on the torsion spring seat and the suitable torsion spring of torsion spring seat, when nuclear grade valve electric device is in closed condition, the contravention that balances or cancel each other on the torsion spring constitutes spacing the cooperation with the clamp pin, and declutch shift shaft links between the contravention and with torsion spring balancing or cancel each other on the torsion spring.Displacement amount when the Stroke Control assembly can be opened spool or close changes into corresponding signal; and predefined spool travel reference value and signal can be compared; stop motor when making the displacement amount of spool reach setting value, thereby valve has been played the effect of stroke protection.Because the setting of torsion spring makes declutch shift shaft have automatically reset function, reset and need not manual tune again, the clamp pin has played position-limiting action to the original state of torsion spring simultaneously, avoids declutch shift shaft just to rotate with travelling nut under the effect of very little power.
The further setting of the present invention is: described spacing stroke shaft is provided with the shoulder rank, place, shoulder rank is provided with and takes on the inconsistent dish spring in rank, dish spring and torsion spring seat are inconsistent, torsion spring seat and caging bolt are inconsistent, caging bolt and STATEMENT OF FEDERALLY SPONSORED are inconsistent, and STATEMENT OF FEDERALLY SPONSORED and spacing stroke shaft are circumferentially gone up interlock, and STATEMENT OF FEDERALLY SPONSORED and gland nut are inconsistent, torsion spring seat, caging bolt, STATEMENT OF FEDERALLY SPONSORED and gland nut are circumferentially gone up interlock each other, and axially upper limit cooperates.Shoulder rank and fixed base that spacing stroke shaft self is provided with have constituted spacing cooperation, cooperate gland nut to the compressing of caging bolt again, thereby realize that compacted nut of spacing stroke shaft and fixed base are fixing in the axial direction, and week upwards is rotatably assorted.STATEMENT OF FEDERALLY SPONSORED is a cylindrical shape, inwall in the tube is installed with block, spacing stroke shaft is provided with the groove suitable with block, and the rotation of spacing stroke shaft will drive STATEMENT OF FEDERALLY SPONSORED and rotate together, and the rotation of STATEMENT OF FEDERALLY SPONSORED is rotated gland nut, caging bolt and the torsion spring seat that drive is under the static friction together.
The further setting of the present invention is: described limit assembly comprises locking nut and spacing adjustment nut; locking nut and spacing adjustment nut rotate in opposite directions on caging bolt and conflict fixing; being provided with of limit assembly can be optionally be set the stroke protection according to calculated value and be the mobile stroke range of spool, and be simple and quick.Travelling nut is equipped with positive stop lug boss on the bi-side, the side relative with travelling nut is provided with position limit pin a on the limit assembly, positive stop lug boss interlock on position limit pin a and the travelling nut, travelling nut is provided with position limit pin b with respect to the opposite side of limit assembly place one side on the caging bolt, the positive stop lug boss interlock on position limit pin b and the travelling nut.Positive stop lug boss, position limit pin a and position limit pin b cooperatively interact, and make travelling nut can realize playing the effect of interlock each other under the simplest mechanical structure.
Of the present inventionly further be set to again: be provided with the conflict piece towards the place, side of moment adjustment dish on the described switch selective pan, the moment that the end of moment adjustment dish is respectively equipped with is adjusted knob, moment is adjusted knob and is run through moment adjustment dish, be provided with moment towards the end of switch selective pan on the moment adjustment knob and adjust piece, moment adjustment piece can circumferentially rotate and link with the conflict piece, described switch selective pan is provided with the link that resets, this reset link one end and the interlock of switch selective pan, the other end and fixing frame are fixed, the end of described switch selective pan is provided with switch and selects knob, this switch is selected knob penetrating switch selective pan, switch is selected to be provided with switch towards the end of shifting block on the knob and is selected piece, and switch is selected piece circumferentially to rotate and linked with shifting block.Conflict piece and moment are adjusted the cooperation of piece, and switch is selected being linked of piece and shifting block, the control of the moment size that has transformed when having realized respectively and to the startup of Stroke Control or close for the motor play, satisfy in dissimilar valves requirement, thereby go for how different valves moment and stroke.
Below in conjunction with specification drawings and specific embodiments the present invention is done further introduction.
Description of drawings
Fig. 1 is the schematic representation of the embodiment of the invention.
The generalized section that Fig. 2 installs in valve for the present invention.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the generalized section of the embodiment of the invention.
Fig. 5 is the explosive view of embodiment of the invention Torque Control assembly.
Fig. 6 is the explosive view of embodiment of the invention sensitive switch assembly.
Fig. 7 is the schematic representation of Fig. 6 backsight.
Fig. 8 is the plan view of the embodiment of the invention.
Fig. 9 is the side view of the embodiment of the invention.
Figure 10 is the B-B sectional view of Fig. 9.。
Figure 11 is the schematic representation of embodiment of the invention Stroke Control assembly.
Figure 12 is the schematic representation of the spacing stroke shaft of the embodiment of the invention, STATEMENT OF FEDERALLY SPONSORED and gland nut.
Figure 13 is the explosive view of embodiment of the invention Stroke Control assembly
Figure 14 is the explosive view of embodiment of the invention limit assembly.
The schematic representation of Figure 15 embodiment of the invention shift fork.
The schematic representation of Figure 16 embodiment of the invention travelling nut.
Embodiment
Below by embodiment the present invention is carried out concrete description; only be used for the present invention is further specified; can not be interpreted as the qualification to protection domain of the present invention, the technician in this field can make some nonessential improvement and adjustment to the present invention according to the content of foregoing invention.
As Fig. 1; 2; shown in 3; present embodiment comprises casing 1; handwheel 12; and be located at motor 11 in the casing 11; worm screw 15; worm gear 14; live axle 13 and wiring base 16; handwheel 12 is fixing with live axle 13; worm gear 14 is sheathed on the live axle 13; end of worm screw 15 and worm gear 14 interlocks; the other end and motor output shaft 111 interlocks; worm screw 15 is rotated with motor output shaft 111; worm screw 15 is given live axle 13 with the torque transmitting of motor output shaft 111 outputs; live axle 13 will drive the closure or openness of valve; wiring base 16 is fixedly arranged in the casing 1 and UNICOM's casing 1 internal circuit and casing 1 external circuit; play the conductor function of input and output electric energy and input and output electrical signal; and responsive electronic component is not installed in the present invention; and the actuator of the mechanical structure by positioned inside of the present invention and control mechanism replace having in the existing valve electronic equipment of protective function; thereby can avoid interference and the erosion of radiation environment complicated in the nuclear power plant containment shell, guarantee electric device for valve reliable and stable running in nuclear power plant containment shell thus nuclear grade valve.Actuator includes Torque Control assembly 2 and Stroke Control assembly 3, and control mechanism includes sensitive switch assembly 4.Sensitive switch assembly 4 among the present invention is an electric elements, sensitive switches in the sensitive switch assembly 4 are being linked between simple tinsel and lead, compare more stable with the electronic component in the conventional valves Electric actuator, there is not the electronic component sensitivity, so be not subject to the influence of complex environment factor in the nuclear power plant containment shell.
In the present embodiment, the output terminal of motor output shaft 111 is provided with moment push rod 112, moment push rod 112 is axially settled along motor output shaft 111, one end of moment push rod 112 and the output terminal end of motor output shaft 111 are inconsistent, the other end is provided with and its axially Torque Control assembly 2 of interlock, this Torque Control assembly 2 and 4 interlocks of sensitive switch assembly.Torque Control assembly 2 comprises fixing frame 5, return unit 22, displacement conversion part 21 and central shaft 23, described fixing frame 5 is fixedly arranged in the casing 1, one end of displacement conversion part 21 and motor output shaft 111 interlocks, one end of the other end and central shaft 23 is fixed, the other end of central shaft 23 and 4 interlocks of sensitive switch assembly.Fixing frame 5 is provided with mounting hole 51, mounting hole 51 is suitable with displacement conversion part 21, displacement conversion part 21 is positioned at mounting hole 51 and does circumferentially to rotate, described displacement conversion part 21 comprises displacement conversion part body 211 and straight pin 212, displacement conversion part body 211 is a tubulose, displacement conversion part body 211 is provided with along the 211 axial screw settings of displacement conversion part body and penetrates two guide grooves 2111 of displacement conversion part body, article two, guide groove 2111 is symmetrical arranged, straight pin 212 is placed in the guide groove 2111 and two end part extend to outside the displacement conversion part body 211, mounting hole 51 on the fixing frame 5 is cylindric, mounting hole 51 inwalls offer two guide rails 511 for the straight pin motion, and guide rail 511 is along mounting hole 51 axial direction settings.This return unit 22 is a spiral spring 22, spiral spring 22 is sheathed on the displacement conversion part 21, one end of spiral spring 22 and displacement conversion part 21 are fixing, and the other end and fixing frame 5 are fixing, thereby constitute the return unit 22 after displacement conversion part 21 rotates in a circumferential direction along mounting hole 51.When moment push rod 112 not with displacement conversion part body 211 in straight pin 212 when conflicting, displacement conversion part 21 will rotate to the home position under the effect of spiral spring 22, this moment, straight pin 212 was positioned at the guide groove 2111 near motor output shaft 111, this nuclear grade valve electric device installs and when being in normal operation position, moment push rod 112 is the middle position of mortgage straight pin 212 to displacement conversion part body 211 upper rails 2111, so be provided with, then motor output shaft 111 is in and promotes or drop back all to cause the variation of straight pin displacements in the displacement conversion part 21, drive displacement conversion part body 211 and rotate corresponding angle, thereby drive central shaft 23, moment adjustment dish rotates 41, will drive on-off mode selective pan 42 and rotate and triggering sensitive switch 44 when turning to the angle of setting.Motor 11 plaies can appear when motor 11 starts or run into situation such as card machine in movement process, this displacement conversion part 21 is converted into circumferential rotation with motor output shaft 111 axial plaies, by the calculating and the adjusting of precision, the displacement of axial float and the angle of circumferentially rotating can obtain standardized quantitative.When play appears in motor 11; moment push rod 112 will produce corresponding change in displacement; this change in displacement is reflected in the promotion of straight pin 212 or the recession simultaneously intuitively; because straight pin 212 slippage in guide rail 511; thereby drive 211 rotations of displacement conversion part body; driving central shaft 23 simultaneously deflects; if motor 11 plaies have surpassed predefined value; central shaft 23 deflection respective angles and start sensitive switch assembly 4 then; 4 of sensitive switch assemblies quit work motor 11, thereby valve is played a protective role.The other end of motor output shaft 111 relative its output terminals is arranged with damping stroke spring 113, this damping stroke spring 113 is a dish spring 113, dish spring 113 1 ends and motor output shaft 111 are fixing, the other end and fixing frame 5 are fixing, no matter motor is a play left or to the right, dish spring 113 will absorb the kinetic energy of play, and according to predefined value, the energy size that makes dish spring 113 be absorbed is reflected in the compression or extension value of dish spring 113, thereby be reacted to by displacement conversion part 21 in the angle variation of central shaft 23, and then be transferred to sensitive switch assembly 4, judge whether to export corresponding signal according to predefined value.Wherein, because nuclear grade valve when work, the power of motor 11 axial floats is in a tonne order of magnitude substantially, thus dish spring 113 be arranged as a plurality of stacks and two-way fixedly installing.And the number of guide groove 2111 can be not limited to two, can three or more, but effect is the same, promptly reaches straight pin 212 stable axial-movement in displacement conversion part body 211.The setting of this damping stroke spring 113, the one, reduce the impact of electric device for valve when the open and close valve, the 2nd, control the displacement amount of motor shaft play by spring, make the amount of displacement of play be within the allowed band of Torque Control mechanism, make the size of displacement amount and the size of control moment form fixing proportionate relationship simultaneously.Can also simply release in addition, fixing frame can be wholely set with casing 1, also can the split setting.
In the present embodiment, sensitive switch assembly 4 comprises moment adjustment dish 41, switch selective pan 42, switch block 43 and sensitive switch body 44, described moment adjustment dish 41 is fixed on the central shaft 23, switch selective pan 42 mobilizable being sheathed on the central shaft 23, and between moment adjustment dish 42 and fixing frame 5, constitute with the intermittence of moment adjustment dish 41 and link, switch selective pan 42 is provided with conflict piece 422 towards the side middle position of moment adjustment dish 41, this conflict piece 422 and 41 interlocks of moment adjustment dish.Switch block 43 is fixed in switch selective pan 42 tops, and with sensitive switch body 44 interlock, and sensitive switch body 44 is fixed on the fixing frame 5 and towards switch selective pan 42 by bearing pin etc. and is provided with.Wherein, sensitive switch body 44 is fixed into whole set by three common on the market sensitive switches, sensitive switch body 44 is the two end part that the set of two groups of sensitive switches is individually fixed in fixing frame 5 sides, on ﹠ off switch 441 on the sensitive switch body 44 and switch block 43 interlocks.Can also simply release in addition, being provided with of switch block 43 and switch selective pan 42 can be wholely set, also can the split setting.In the present embodiment; the moment adjustment is coiled the left and right sides, 41 upper end portion and is provided with moment adjustment knob 411; moment is adjusted knob 411 and is run through moment adjustment dish 41; be provided with moment towards the end of switch selective pan 42 on the moment adjustment knob 411 and adjust piece 4111; it is crescent shape that moment is adjusted piece 4111; the end that moment is adjusted piece 4111 is fixed on the hinging shaft on the moment adjustment dish 41; the other end can circumferentially rotate around bearing pin; and can regulate moment by rotation and adjust the distance of the end of piece 4111, thereby to being input to the carrying out protection setting in advance of the moment conversion values in the sensitive switch assembly 4 apart from conflict piece 422.The distance of adjusting 422 of piece 4111 and conflict pieces when moment in short-term, the angle variables that only needs to change behind very little motor 11 plaies sensitive switch body 44 that just can set out, if and distance between the two is when longer, then need the bigger moment sensitive switch body 44 that just can set out, therefore can realize adjusting by selecting moment on the moment adjustment dish 41 to adjust knob 411 to predefined moment values, thereby satisfy under the different operating condition, for the situation of different moments requirements.Switch selective pan 42 is provided with the link 54 that resets, this link 54 that resets is that a release link 541 and Returnning spring 542 are formed, release link 541 1 ends and 42 interlocks of switch selective pan, the other end and fixing frame 5 are fixing, Returnning spring 542 is fixed on fixing frame 5 and the release link 541, thereby satisfy the requirement when now switch selective pan 42 is reused, need not manual tune.Wherein, both sides, described switch selective pan 42 underpart are provided with switch and select knob 421, this switch is selected knob 421 penetrating switch selective pans 42, switch is selected to be provided with switch towards the end of shifting block a38 on the knob 421 and is selected piece 4211, switch select piece 4211 around the hinging shaft of himself hinged usefulness circumferentially rotate and with 3 interlocks of Stroke Control assembly.It is rectangular that switch is selected piece 4211, and switch selects an end of piece 4211 to be fixed on the hinging shaft on the switch selective pan 42, and the other end is around its hinging shaft rotation.Therefore can select knob 421 to come by-pass cock to select the distance of spin-block 4211 ends and shifting block a38 by rotary switch, make rotary switch selection knob 421 can realize the unlatching of Stroke Control or close.When Stroke Control is opened, the shifting block a38 in Stroke Control assembly 3 will turn an angle and select the end of spin-block 4211 to conflict with switch, thereby drive switch selective pan 42 interlock together, and then trigger sensitive switch body 44; When Stroke Control is closed, switch selects spin-block 4211 far away apart from shifting block a38, and make both to contact, then no matter shifting block a38 rotates much angles, switch selects spin-block 4211 all can't conflict with shifting block a38, thereby switch selective pan 42 can not rotate, and then sensitive switch body 44 can not be triggered.
In the present embodiment, described Stroke Control assembly 3 comprises driving component 31, fixing frame 5, spacing stroke shaft 32, the caging bolt 33 of tubulose, limit assembly 36, be sheathed on the caging bolt 33 and along the travelling nut 35 of caging bolt 33 axial motions, declutch shift shaft 34 with travelling nut 35 interlock on circumferentially, link 341, torsion spring 391, torsion spring seat 392, jump ring 393, gland nut 371, STATEMENT OF FEDERALLY SPONSORED, shifting block a38, described spacing stroke shaft 32 passes axis hole suitable with it on the fixing frame 5, be positioned on the spacing stroke shaft 32 and have two circle seal grooves 323 on the perisporium of axis hole, seal groove 323 places are installed on the seal ring suitable with it, and the setting of sealing circle is to enter in the electric device for valve with other impurity for the oil that prevents the motor place.Spacing stroke shaft 32 1 ends are installed with driving component 31, driving component 31 comprises connecting tube 311 and helical gear 312, connecting tube 311 and spacing stroke shaft 32 are fixed by latch, connecting tube 311 ends are installed with a helical gear 312, worm gear 16 interlocks on this helical gear 312 and the live axle 13, this worm gear 16 and with motor output shaft on 111 worm gear 15 be not same, therefore can change the stroke range of Stroke Control assembly 3 by the conditions such as the number of teeth on the worm gear 15 by different worm gears 15 is installed.Wherein, spacing stroke shaft 3 is provided with two shoulder rank 321 with the opposite setting of driving component 31 place directions, shoulder 321 places, rank near the fixing frame upper shaft hole are arranged with a jump ring 323, these jump ring 323 1 sides and fixing frame 5 are inconsistent, the other end and torsion spring seat 392 are inconsistent, another shoulder 321 places, rank are arranged with multi-disc dish spring, and the positive and negative conflict of dish spring cooperates.Torsion spring seat 392 is a sleeve shape, torsion spring seat 392 1 ends are provided with the flange that extends internally, this flange inner and dish spring inconsistent cooperate of shoulder on the rank 321, the other end of the flange that extends internally on the torsion spring seat 392 extends outward flange, this flange has played when torsion spring 391 is sheathed on the torsion spring seat 392 and has stopped that torsion spring 391 takes place from the situation that this end breaks away from, the length of this torsion spring seat 392 is greater than the length of torsion spring 391, the internal diameter of the diameter of torsion spring seat 392 and torsion spring 391 is suitable, and torsion spring 392 is sheathed on the torsion spring seat 392 and can does and relatively rotates.Caging bolt 33 and next-door neighbour's torsion spring seat 392 are settled, STATEMENT OF FEDERALLY SPONSORED 372 next-door neighbour's caging bolts 33, gland nut 371 next-door neighbour's STATEMENT OF FEDERALLY SPONSORED 372 are settled, and be sheathed on successively on the spacing stroke shaft 32, torsion spring seat 392, caging bolt 33, the permanent order of STATEMENT OF FEDERALLY SPONSORED 372 and gland nut 371 successively from spacing stroke shaft 32 and axis hole touching position to spacing stroke shaft 32 end arranged cells, gland nut 371 is by screwing to the axis hole direction, thereby make gland nut 371, torsion spring seat 392, caging bolt 33, jump ring 323 and fixed base 5 are conflicted to each other mutually, and then realize fixing torsion spring seat 392 and caging bolt 33.It is fixing according to being: the stiction after being pressed against each other has played drag effect, makes torsion spring seat 392, caging bolt 33 and 371 nothings of gland nut relatively rotate, promptly static together each other or axial rotation together, thus form unified integral body.STATEMENT OF FEDERALLY SPONSORED 372 is a cylindrical shape, the inwall of STATEMENT OF FEDERALLY SPONSORED 372 is installed with block, spacing stroke shaft 32 is provided with the groove suitable with block, the rotation of spacing stroke shaft 32 will drive STATEMENT OF FEDERALLY SPONSORED 372 and rotate rotation together, and the rotation of STATEMENT OF FEDERALLY SPONSORED 372 is rotated gland nut 371, caging bolt 33 and the torsion spring seat 392 that drive is under the static friction together.Can simply release, the inwall block of interlock piece 372 can be irregularly shaped for other, and spacing stroke shaft 32 first line of a couplet motion blocks 372 positions are suitable with interlock piece 372 inner wall shape, admittedly can realize that interlock piece 372 and spacing stroke shaft 32 are in the interlock that makes progress in week by this structure.On the torsion spring 391 distance of 3911 at two conflict ends that stretch out just and the diameters of declutch shift shaft 34 ends suitable, declutch shift shaft 34 passes the contravention that balances or cancel each other, therefore torsion spring 391 plays spacing fixation by the 3911 pairs of declutch shift shafts 34 of end of conflicting, when declutch shift shaft 34 rotates, torsion spring 391 can be with declutch shift shaft 34 interlocks, but after putting on external force on the declutch shift shaft 34 and withdrawing, torsion spring 391 will make declutch shift shaft 34 be reset to initial position.Link 341 comprises shift fork 3412 and connecting sheet 3411, one end of shift fork 3412 and connecting sheet 3411 is provided with axis hole and is sheathed on the caging bolt 33 and circumferentially rotates, the other end relative with the axis hole position fixedlyed connected with declutch shift shaft 34 on shift fork 3412 and the connecting sheet 3411, and 34 of declutch shift shafts are set up on the link and with link 341 and circumferentially are rotatably assorted.On the shift fork 3412 and declutch shift shaft 34 the other end of fixing an end have fixing port 34121, shifting block a38 is tabular, the end of shifting block a38 is provided with axis hole and is sheathed on the central shaft 23 and is rotatably assorted, the other end places in the fixing port 34121 and with shift fork 3412 and links, shifting block a38 also can drive 43 interlocks of switch selective pan with the rotation of shift fork 3412, thereby touches the sensitive switch body 44 in the sensitive switch assembly 4.Wherein, also be installed on symmetrically arranged gear pin 53 respectively in fixing frame 5 two bottom sides; when triggering sensitive switch assembly 4 when declutch shift shaft 34 rotation and by shifting block a38; gear pin 53 just and declutch shift shaft 34 inconsistent; and restriction declutch shift shaft 34 is rotated further; and then protected the stable operation of Stroke Control assembly 3, avoided the overload of Stroke Control assembly 3.Wherein, no matter declutch shift shaft 34 both sides are equipped with gear pin 53, all can obtain position limitation protection so no matter declutch shift shaft 34 changes still to reverse.
In the present embodiment, described limit assembly 36 is fixedly arranged on the caging bolt 33, and can be at the relative position of caging bolt 33 adjusted self, limit assembly 36 comprises locking nut 362, pad 363 and spacing adjustment nut 361, pad 363 is positioned at 361 on locking nut 362 and spacing adjustment nut, locking nut 362 and spacing adjustment nut 361 are sheathed on the caging bolt 33, and can on caging bolt 33, rotate in opposite directions and grip gasket 363, therefore can be by after unscrewing locking nut 362, regulate the position of spacing adjustment nut 361 on caging bolt 33 then, thereby realize adjustment, and then regulating valve standard-sized sheet motor output shaft 111 during complete shut-down angle of being changeed or total to limit assembly 36 positions.Wherein, described travelling nut 35 is between connecting sheet 3411 and limit assembly 36, travelling nut 35 can with caging bolt 33 screw-thread fit, have on the circumference of travelling nut 35 and the suitable restraining groove 351 of declutch shift shaft 32 diameters, just be positioned at restraining groove 351 after declutch shift shaft 34 is fixing.When caging bolt 33 rotates, because 34 pairs of travelling nuts 35 of declutch shift shaft at the position-limiting action that makes progress in week, make travelling nut 35 can't satisfy circumferential rotation, so travelling nut 35 can be done axial moving along caging bolt 33.In addition, be provided with the positive stop lug boss 352 of protrusion on the travelling nut 35 respectively near the place, bi-side of screw, and spacing adjustment nut 361 is provided with the position limit pin a3611 that links with positive stop lug boss 352 towards the end face of travelling nut 35.Be provided with the flange of protrusion on the caging bolt 33 near connecting sheet 3411 places, flange is provided with position limit pin b331 towards the sidewall of travelling nut 35, position limit pin b331 rotates with caging bolt 33, and when travelling nut 35 near to position limit pin b331 when enough near, position limit pin b331 will link with the positive stop lug boss 352 on the travelling nut 35.And in an embodiment, when travelling nut 35 close to spacing adjustment nut 361 under the interlock of caging bolt 33, when the position limit pin a3611 on the spacing adjustment nut 361 inconsistent because of the positive stop lug boss 352 on rotation and the travelling nut 35, overcome the spacing of declutch shift shaft 34 and rotate driving travelling nut 35, and then drive declutch shift shaft 34 and overcome the reposition force of torsion spring 391 and rotate.The rotation of declutch shift shaft 34 then drives shift fork 3412 and makes corresponding rotation, and shift fork 3412 because of with sensitive switch assembly 4 interlock, so touch sensitive switch assembly 4, thereby realization is to the control of motor 11.In addition, in the present embodiment, also being arranged with on the central shaft 23 can be around the shifting block b6 of central shaft 23 rotations, shifting block b6 upper end extends to sensitive switch body 44 places and can link with sensitive switch body 44, the interlock sheet 61 of source sheet is extended in the lower end, also be arranged with torsion spring 391 on the central shaft 23, the contravention 3911 that balances or cancel each other on the torsion spring 391 is sandwiched in respectively on shifting block a38 and the shifting block b6, make shifting block a38 and shifting block b6 link, shifting block b6 will link with two other sensitive switch on the sensitive switch body 44, can realize extra signal output, thereby satisfy when valve being had more work require that the staff has the more leeway of more options signal.
Claims (10)
1. nuclear grade valve electric device, include and the actuator of the motor output shaft of motor interlock and the control mechanism that drives by actuator, it is characterized in that: described actuator includes Torque Control assembly and Stroke Control assembly, control mechanism includes the sensitive switch assembly, the output terminal of described Torque Control assembly and motor output shaft axially links, the Torque Control assembly comprises fixing frame, return unit and displacement conversion part, described fixing frame is fixedly arranged in the casing, one end of displacement conversion part and motor output shaft interlock, the other end and the interlock of sensitive switch assembly, described fixing frame is provided with mounting hole, mounting hole and displacement conversion part are suitable, the displacement conversion part is positioned at mounting hole to be done circumferentially to rotate, and return unit is resetting between displacement conversion part and the fixing frame and after constituting the displacement conversion part and rotating in a circumferential direction along mounting hole.
2. nuclear grade valve electric device according to claim 1, it is characterized in that: described displacement conversion part comprises displacement conversion part body and straight pin, displacement conversion part body is a tubulose, displacement conversion part body is provided with along the axial screw setting of displacement conversion part body and penetrates the guide groove of displacement conversion part body, guide groove has two at least, straight pin is placed in the guide groove and extends to the displacement conversion part this is external, the mounting hole inwall offers the guide rail for the straight pin motion, guide rail is provided with along the mounting hole axial direction, and number may is consistent with the guide groove number.
3. nuclear grade valve electric device according to claim 1 and 2, it is characterized in that: the described motor output shaft the other end of its output terminal relatively is arranged with damping stroke spring, damping stroke spring one end and motor output shaft are fixed, the other end and fixing frame are fixed, be installed with moment push rod on the motor output shaft with the motor output shaft interlock, moment push rod and motor output shaft are positioned on the same axis, the link the other end of an end of moment push rod and motor output shaft places in the displacement conversion part and with the intrinsic straight pin of displacement conversion part and conflicts, constitute interlock with straight pin, the link the other end of an end of displacement conversion part and moment push rod is installed with central shaft, central shaft and displacement conversion part are positioned on the same axis, the displacement conversion part is by this central shaft and sensitive switch assembly, described return unit is a spiral spring, spiral spring one end and displacement conversion part are fixed, the other end and fixing frame are fixed, described sensitive switch assembly comprises moment adjustment dish, the switch selective pan, switch block and sensitive switch body, described moment adjustment dish is fixed on the central shaft, the switch selective pan is mobilizable to be sheathed on the central shaft, and intermittently link with moment adjustment dish, switch block is fixed on the moment adjustment dish, and links with the sensitive switch body.
4. nuclear grade valve electric device according to claim 1, it is characterized in that: described Stroke Control assembly comprises fixing frame, driving component, spacing stroke shaft, caging bolt, declutch shift shaft, link, travelling nut, limit assembly and shifting block, fixing frame is provided with the axis hole that passes for spacing stroke shaft, spacing stroke shaft and fixing frame are circumferential rotation and axial limiting, driving component one end and live axle interlock, the other end and the interlock of spacing stroke shaft, be arranged with caging bolt with the link the other end of an end of driving component on the spacing stroke shaft, be arranged with travelling nut on the caging bolt with the caging bolt screw-thread fit, link is sheathed on the spacing stroke shaft and with spacing stroke shaft and rotates, declutch shift shaft is set up on the link and with link and circumferentially links, mobilizable being located on the caging bolt and with travelling nut of limit assembly linked, on the link and declutch shift shaft link an end the right the other end link with shifting block, shifting block is sheathed on the central shaft, shifting block and central shaft circumferentially rotate, shifting block and the interlock of sensitive switch assembly.
5. nuclear grade valve electric device according to claim 3, it is characterized in that: described Stroke Control assembly comprises fixing frame, driving component, spacing stroke shaft, caging bolt, declutch shift shaft, link, travelling nut, limit assembly, shifting block, be fixed in the clamp pin on the fixing frame, and be sheathed on torsion spring and torsion spring seat on the spacing stroke shaft, fixing frame is provided with the axis hole that passes for spacing stroke shaft, spacing stroke shaft and fixing frame are circumferential rotation and axial limiting, driving component one end and live axle interlock, the other end and the interlock of spacing stroke shaft, be arranged with caging bolt with the link the other end of an end of driving component on the spacing stroke shaft, caging bolt and spacing stroke shaft circumferentially link, be arranged with travelling nut on the caging bolt with the caging bolt screw-thread fit, link is sheathed on the spacing stroke shaft and with spacing stroke shaft and rotates, declutch shift shaft is set up on the link and with link and circumferentially links, mobilizable being located on the caging bolt and with travelling nut of limit assembly linked, on the link and declutch shift shaft link an end the right the other end link with shifting block, shifting block is sheathed on the central shaft, shifting block and central shaft circumferentially rotate, shifting block and the interlock of sensitive switch assembly, the torsion spring seat is fixedly arranged on the spacing stroke shaft and with spacing stroke shaft and links, be arranged with on the torsion spring seat and the suitable torsion spring of torsion spring seat, when nuclear grade valve electric device is in closed condition, the contravention that balances or cancel each other on the torsion spring constitutes spacing the cooperation with the clamp pin, and declutch shift shaft links between the contravention and with torsion spring balancing or cancel each other on the torsion spring.
6. nuclear grade valve electric device according to claim 5, it is characterized in that: described spacing stroke shaft is provided with the shoulder rank, place, shoulder rank is provided with and takes on the inconsistent dish spring in rank, dish spring and torsion spring seat are inconsistent, and torsion spring seat and caging bolt are inconsistent, and caging bolt and STATEMENT OF FEDERALLY SPONSORED are inconsistent, STATEMENT OF FEDERALLY SPONSORED and spacing stroke shaft are circumferentially gone up interlock, STATEMENT OF FEDERALLY SPONSORED and gland nut are inconsistent, and torsion spring seat, caging bolt, STATEMENT OF FEDERALLY SPONSORED and gland nut are circumferentially gone up interlock each other, and axially upper limit cooperates.
7. nuclear grade valve electric device according to claim 5, it is characterized in that: described limit assembly comprises locking nut and spacing adjustment nut, locking nut and spacing adjustment nut rotate in opposite directions on caging bolt and conflict fixing, travelling nut is equipped with positive stop lug boss on the bi-side, the side relative with travelling nut is provided with position limit pin a on the limit assembly, positive stop lug boss interlock on position limit pin a and the travelling nut, travelling nut is provided with position limit pin b with respect to the opposite side of limit assembly place one side on the caging bolt, the positive stop lug boss interlock on position limit pin b and the travelling nut.
8. nuclear grade valve electric device according to claim 6, it is characterized in that: described limit assembly comprises locking nut and spacing adjustment nut, locking nut and spacing adjustment nut rotate in opposite directions on caging bolt and conflict fixing, travelling nut is equipped with positive stop lug boss on the bi-side, the side relative with travelling nut is provided with position limit pin a on the limit assembly, positive stop lug boss interlock on position limit pin a and the travelling nut, travelling nut is provided with position limit pin b with respect to the opposite side of limit assembly place one side on the caging bolt, the positive stop lug boss interlock on position limit pin b and the travelling nut.
9. nuclear grade valve electric device according to claim 3, it is characterized in that: be provided with the conflict piece towards the place, side of moment adjustment dish on the described switch selective pan, the moment that the end of moment adjustment dish is respectively equipped with is adjusted knob, moment is adjusted knob and is run through moment adjustment dish, be provided with moment towards the end of switch selective pan on the moment adjustment knob and adjust piece, moment adjustment piece can circumferentially rotate and link with the conflict piece, described switch selective pan is provided with the link that resets, this reset link one end and the interlock of switch selective pan, the other end and fixing frame are fixed, the end of described switch selective pan is provided with switch and selects knob, this switch is selected knob penetrating switch selective pan, switch is selected to be provided with switch towards the end of shifting block on the knob and is selected piece, and switch is selected piece circumferentially to rotate and linked with shifting block.
10. according to claim 5 or 6 or 7 or 8 described nuclear grade valve electric devices, it is characterized in that: be provided with the conflict piece towards the place, side of moment adjustment dish on the described switch selective pan, the moment that the end of moment adjustment dish is respectively equipped with is adjusted knob, moment is adjusted knob and is run through moment adjustment dish, be provided with moment towards the end of switch selective pan on the moment adjustment knob and adjust piece, moment adjustment piece can circumferentially rotate and link with the conflict piece, described switch selective pan is provided with the link that resets, this reset link one end and the interlock of switch selective pan, the other end and fixing frame are fixed, the end of described switch selective pan is provided with switch and selects knob, this switch is selected knob penetrating switch selective pan, switch is selected to be provided with switch towards the end of shifting block on the knob and is selected piece, and switch is selected piece circumferentially to rotate and linked with shifting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010132738.5A CN101776169B (en) | 2010-03-22 | 2010-03-22 | Nuclear grade valve electric device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010132738.5A CN101776169B (en) | 2010-03-22 | 2010-03-22 | Nuclear grade valve electric device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101776169A true CN101776169A (en) | 2010-07-14 |
| CN101776169B CN101776169B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010132738.5A Active CN101776169B (en) | 2010-03-22 | 2010-03-22 | Nuclear grade valve electric device |
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| Country | Link |
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| CN (1) | CN101776169B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112837952A (en) * | 2021-01-25 | 2021-05-25 | 重庆川仪自动化股份有限公司 | Swing arm type valve limit switch |
| CN115076437A (en) * | 2022-07-04 | 2022-09-20 | 常州市环宇电站辅机有限公司 | Direct-connected torque transmission mechanism and application method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057514A (en) * | 1990-06-18 | 1992-01-01 | 郑正 | Digital valve driving device |
| CN2726193Y (en) * | 2004-09-20 | 2005-09-14 | 项美根 | Valve torque limiting electric apparatus |
| CN201621347U (en) * | 2010-03-22 | 2010-11-03 | 特福隆集团有限公司 | Nuclear grade valve electric apparatus |
-
2010
- 2010-03-22 CN CN201010132738.5A patent/CN101776169B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1057514A (en) * | 1990-06-18 | 1992-01-01 | 郑正 | Digital valve driving device |
| CN2726193Y (en) * | 2004-09-20 | 2005-09-14 | 项美根 | Valve torque limiting electric apparatus |
| CN201621347U (en) * | 2010-03-22 | 2010-11-03 | 特福隆集团有限公司 | Nuclear grade valve electric apparatus |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112837952A (en) * | 2021-01-25 | 2021-05-25 | 重庆川仪自动化股份有限公司 | Swing arm type valve limit switch |
| CN112837952B (en) * | 2021-01-25 | 2022-11-11 | 重庆川仪自动化股份有限公司 | Swing arm type valve limit switch |
| CN115076437A (en) * | 2022-07-04 | 2022-09-20 | 常州市环宇电站辅机有限公司 | Direct-connected torque transmission mechanism and application method thereof |
| CN115076437B (en) * | 2022-07-04 | 2024-05-14 | 常州市环宇电站辅机有限公司 | Direct-connection type torque transmission mechanism and application method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101776169B (en) | 2014-11-05 |
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Effective date of registration: 20191105 Address after: No. 950 Feidu Road, Nicheng Town, Pudong New Area, Shanghai, 200120 Patentee after: Teflon (Shanghai) Technology Co., Ltd. Address before: 325000 No. 66, No. 1, Gao Lu, Wenzhou economic and Technological Development Zone, Zhejiang Patentee before: Tefulong Group Co., Ltd. |
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