Equipment for detecting interface tightness of nuclear power generation steam generator
Technical Field
The invention relates to the field of nuclear power generation, in particular to equipment for detecting the tightness of a nuclear power generation steam generator interface.
Background
With the progress of society and the continuous development of science and technology, nuclear power generation is widely applied and popularized nationwide, and the nuclear power generation technology is more and more mature and advanced, so that the nuclear power generation becomes an extremely important component of the electric quantity source in China.
At present, a nuclear power generation device is composed of a plurality of components, wherein a steam generator is one important component, the steam generator needs to be completely sealed, and once the phenomenon of air leakage occurs, the power generation efficiency is influenced and energy is wasted.
Disclosure of Invention
The invention aims to solve the technical problem of providing equipment for detecting the tightness of the interface of the nuclear power generation steam generator, solving the problems that the air leakage phenomenon cannot be found in time and the air leakage place cannot be blocked in time and the like, and increasing the air leakage alarming function and the air leakage blocking function.
The invention is realized by the following technical scheme.
The invention discloses equipment for detecting the tightness of a nuclear power generation steam generator interface, which comprises a shell, wherein a transmission cavity is arranged at the left end in the shell, an induction cavity is arranged at the lower side of the transmission cavity, a transmission mechanism for providing power for a device is arranged in the transmission cavity, a blocking mechanism for re-sealing the interface is also arranged in the transmission cavity, an alarm mechanism for reminding air leakage is arranged at the left end in the shell, and an air leakage induction mechanism for inducing air leakage is arranged at the lower side in the shell;
the blocking mechanism comprises a sliding cavity which is positioned on the right cavity wall of the transmission cavity and has a leftward opening, two sliding blocks which can slide up and down in the cavity are arranged in the sliding cavity, a screw rod is fixedly arranged on the outer wall of the two sliding blocks, a sealing ring is arranged on the inner ring of the screw rod, a threaded sleeve is in threaded connection with the outer wall of the screw rod, a gear ring is arranged on the outer wall of the threaded sleeve, a sealing plate which isolates the transmission cavity from the sensing cavity is arranged on the upper cavity wall of the sensing cavity, the sealing plate can slide up and down in the sensing cavity, a compression spring is fixedly arranged on the lower cavity wall of the sealing plate and is connected with the lower cavity wall of the sensing cavity, a movable cavity is arranged on the lower side of the sensing cavity, the left end of the movable cavity is provided with a left-right movable plate which can move left and right in the, the upper end face of the lifting block is fixedly provided with a reciprocating spring connected with the upper cavity wall, the left end face of the transmission cavity is fixedly provided with two telescopic springs connected with the left cavity wall of the movable cavity, the left end face of the transmission cavity is also fixedly connected with a hemp rope, the upper cavity wall of the movable cavity is connected with a pressure rod in a penetrating manner, the lower end face of the pressure rod is fixedly provided with a fixed plate, and the upper end face of the fixed plate is fixedly provided with a connecting spring connected with the upper cavity wall of the movable cavity;
the device is through whether gas leakage is responded to the mechanism response of leaking gas, the rethread drive mechanism with block up the mechanism and seal the position of leaking gas again to can pass through alarm mechanism plays the warning effect to the position of leaking gas.
Further, drive mechanism is including fixing the motor of transmission chamber upper chamber wall, motor lower extreme power connection has the transmission shaft, the transmission shaft upper end is equipped with first cam, the transmission shaft upper end still is equipped with and is located the second cam of first cam downside, transmission shaft lower extreme key connection have with the jam mechanism passes through the slip gear that the ring gear meshing is connected, be equipped with the decurrent slip chamber of opening in the slip gear, it can be at the gliding slider of intracavity to be equipped with in the slip chamber, the terminal surface is connected with stay cord one end under the slider, the transmission shaft lower extreme still is equipped with and is located the annular plate of slip gear upside, the fixed two reset springs that are equipped with of terminal surface under the annular plate with the slip gear up end is connected.
Further, the air leakage sensing mechanism comprises a piston cavity which is positioned on the left cavity wall of the sensing cavity and has a right opening, a piston plate capable of sliding left and right in the cavity is arranged in the piston cavity, a conductive cavity is arranged on the left side of the piston cavity, a push rod with the left end extending into the conductive cavity is fixedly arranged on the left end surface of the piston plate, a first conductive block capable of moving left and right in the cavity is arranged on the right end in the conductive cavity, a fixed conductive cavity is fixedly arranged on the left end in the reset spring, the left end of the fixed conductive cavity is electrically connected with a second lead, the right end of the first conductive block is electrically connected with a first lead, a tension spring is arranged on the right end surface of the first conductive block and connected with the right cavity wall of the conductive cavity, a moving cavity with an opening facing right is arranged on the left cavity wall of the transmission cavity, a push plate capable of moving left and right, the left end face of the push plate is fixedly provided with an elastic spring which is connected with the left cavity wall of the moving cavity, and the upper end and the lower end of the machine shell are both provided with sealing rings.
Further, alarm mechanism is including being located remove chamber upside and opening circular telegram chamber to the right, circular telegram chamber right-hand member is equipped with the removal circular telegram piece that can be at intracavity horizontal slip, remove the fixed elastic spring that is equipped with of circular telegram piece left end face with circular telegram chamber left side cavity wall is connected, the fixed circular telegram piece that is equipped with in circular telegram chamber left end, fixed circular telegram piece left end electricity is connected with the electric wire, the fixed alarm that is equipped with of casing left end face, the alarm right-hand member with the connection of electric lines.
Further, the pulling force of the return spring is larger than the sum of the friction force borne by the sliding gear when the sliding gear slides on the transmission shaft and the self gravity of the sliding gear.
Furthermore, the first cam and the second cam are in friction connection on the transmission shaft, the movable power-on block can be pushed leftwards by the forward rotation of the first cam, the movable power-on block cannot be pushed leftwards by the reverse rotation of the first cam, the push plate cannot be pushed leftwards by the forward rotation of the second cam, and the push plate can be pushed leftwards by the reverse rotation of the second cam.
In an initial state, the sliding gear is positioned at the upper end of the transmission shaft and is in meshed connection with the gear ring on the threaded sleeve.
The invention has the beneficial effects that: the device simple structure, the simple operation, the device at the during operation, the gas leakage state of automated inspection kneck can open the jam measure automatically when leaking gas to and reduce the loss that gas leakage brought in time, the device still provides the warning function, in order to remind the staff in time to remedy this department.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram at B-B in FIG. 1 according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of FIG. 1 at C according to an embodiment of the present invention.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The equipment for detecting the tightness of the interface of the nuclear power generation steam generator comprises a shell 10, wherein a transmission cavity 66 is arranged at the left end in the shell 10, a sensing cavity 54 is arranged at the lower side of the transmission cavity 66, a transmission mechanism 47 for providing power for a device is arranged in the transmission cavity 66, a blocking mechanism 51 for re-sealing the interface is also arranged in the transmission cavity 66, an alarm mechanism 37 for air leakage reminding is arranged at the left end in the shell 10, an air leakage sensing mechanism 13 for sensing air leakage is arranged at the lower side in the shell 10, the blocking mechanism 51 comprises a sliding cavity 49 which is positioned on the right cavity wall of the transmission cavity 66 and has a leftward opening, two sliding blocks 48 which can slide up and down in the cavity are arranged in the sliding cavity 49, a screw rod 70 is fixedly arranged on the outer walls of the two sliding blocks 48, a sealing ring 50 is arranged on the inner ring of the screw rod 70, and a threaded sleeve 53, the outer wall of the threaded sleeve 53 is provided with a gear ring 52, the upper cavity wall of the induction cavity 54 is provided with a closed plate 25 for isolating the transmission cavity 66 from the induction cavity 54, the closed plate 25 can slide up and down in the induction cavity 54, the lower cavity wall of the closed plate 25 is fixedly provided with a compression spring 24 and is connected with the lower cavity wall of the induction cavity 54, the lower side of the induction cavity 54 is provided with a movable cavity 55, the left end of the movable cavity 55 is provided with a left-right moving part which can move in the cavity, the transmission cavity 66 is internally provided with a 65 with a right opening, the 65 is internally provided with a lifting block 58 which can move up and down in the cavity, the right end face of the lifting block 58 is fixedly provided with a connecting block 63, the upper end face of the lifting block 58 is fixedly provided with a reciprocating spring 59 and is connected with the upper cavity wall of the 65, the left end face of the transmission cavity 66 is fixedly provided with two telescopic, the device is characterized in that a pressing rod 60 penetrates through the upper wall of the movable cavity 55, a fixing plate 62 is fixedly arranged on the lower end face of the pressing rod 60, a connecting spring 61 is fixedly arranged on the upper end face of the fixing plate 62 and connected with the upper wall of the movable cavity 55, whether air leaks or not is sensed by the air leakage sensing mechanism 13, the air leakage part is sealed again by the transmission mechanism 47 and the blocking mechanism 51, and the air leakage part can be warned by the warning mechanism 37.
Advantageously, the transmission mechanism 47 includes a motor 44 fixed on the upper cavity wall of the transmission cavity 66, a transmission shaft 43 is dynamically connected to the lower end of the motor 44, a first cam 46 is provided at the upper end of the transmission shaft 43, a second cam 45 located below the first cam 46 is further provided at the upper end of the transmission shaft 43, a sliding gear 29 engaged with the blocking mechanism 51 through the gear ring 52 is keyed at the lower end of the transmission shaft 43, a sliding cavity 27 with a downward opening is provided in the sliding gear 29, a sliding block 28 slidable in the sliding cavity 27 is provided in the sliding cavity 28, the lower end surface of the sliding block 28 is connected to one end of the pull rope 26, an annular plate 31 located on the upper side of the sliding gear 29 is further provided at the lower end surface of the transmission shaft 43, and two return springs 30 are fixedly provided at the lower end surface of the annular plate 31 and connected to.
Beneficially, the air leakage sensing mechanism 13 includes a piston cavity 15 located on the left cavity wall of the sensing cavity 54 and having a rightward opening, a piston plate 14 capable of sliding left and right in the cavity is disposed in the piston cavity 15, a conductive cavity 20 is disposed on the left side of the piston cavity 15, a push rod 17 having a left end extending into the conductive cavity 20 is fixedly disposed on the left end surface of the piston plate 14, a first conductive block 19 capable of moving left and right in the cavity is disposed on the right end of the conductive cavity 20, a fixed conductive cavity 21 is fixedly disposed on the left end of the reset spring 30, a second conductive wire 23 is electrically connected to the left end of the fixed conductive cavity 21, a first conductive wire 22 is electrically connected to the right end of the first conductive block 19, a tension spring 18 is disposed on the right end surface of the first conductive block 19 and connected to the right cavity wall of the conductive cavity 20, a moving cavity 33 having an rightward opening is disposed on the left cavity wall of the transmission cavity 66, the lower end face of the push plate 36 is fixedly connected with one end of the hemp rope 57, the left end face of the push plate 36 is fixedly provided with an elastic spring 34 which is connected with the left cavity wall of the moving cavity 33, and the upper end and the lower end of the machine shell 10 are both provided with sealing rings 11.
Beneficially, alarm mechanism 37 is including being located remove chamber 33 upside and opening circular telegram chamber 39 to the right, circular telegram chamber 39 right-hand member is equipped with can be at intracavity horizontal slip's removal circular telegram piece 42, remove circular telegram piece 42 left end face fixed be equipped with elastic spring 41 with circular telegram chamber 39 left side chamber wall is connected, circular telegram chamber 39 left end is fixed to be equipped with fixed circular telegram piece 40, fixed circular telegram piece 40 left end electricity is connected with electric wire 38, the fixed alarm 35 that is equipped with of casing 10 left end face, alarm 35 right-hand member with electric wire 38 is connected.
Advantageously, the tension of the return spring 30 is greater than the sum of the friction to which the sliding gear 29 is subjected when sliding on the transmission shaft 43 and the weight of the sliding gear 29 itself.
Advantageously, the first cam 46 and the second cam 45 are in friction connection on the transmission shaft 43, the first cam 46 is capable of pushing the movable electric block 42 to the left in a positive rotation mode, the movable electric block 42 is incapable of being pushed to the left in a negative rotation mode, the second cam 45 is incapable of pushing the push plate 36 to the left in a positive rotation mode, and the push plate 36 is capable of being pushed to the left in a negative rotation mode.
In the initial state, the sliding gear 29 is located at the upper end of the transmission shaft 43 and is in meshing connection with the gear ring 52 on the threaded sleeve 53.
Sequence of mechanical actions of the whole device:
1: when the interface leaks air, the air enters the sensing cavity 54, the air pressure in the sensing cavity 54 is increased, the piston plate 14 moves leftwards under the action of the air pressure, so that the push rod 17 is pushed to move leftwards, the first conductive block 19 is pushed to move leftwards to be in contact connection with the fixed conductive cavity 21, and the motor 44 is switched on to start working;
2: the motor 44 works in a forward rotation mode, so that the transmission shaft 43 is driven to rotate, the first cam 46, the second cam 45 and the sliding gear 29 are driven to rotate, the first cam 46 rotates to push the movable electrifying block 42 to the left, the movable electrifying block 42 is electrically connected with the fixed electrifying block 40, the alarm 35 starts to warn, the second cam 45 cannot push the push plate 36 to move to the left and slide on the transmission shaft 43, and the electrifying cavity 39 rotates to drive the blocking mechanism 51 meshed with the push plate to rotate;
3: the blocking mechanism 51 rotates to drive the screw rod 70 in threaded connection with the blocking mechanism to move downwards, the screw rod 70 moves downwards to drive the sealing ring 50 to move downwards to an air leakage interface to prevent air leakage at the interface, the screw rod 70 moves downwards to push the pressure rod 60 to move downwards, so that the fixing plate 62 pushes the connecting block 63 to move downwards, the pull rope 26 is tensioned, the sliding gear 29 is pulled to move downwards through the pull rope 26 to be disengaged from the threaded sleeve 53, and the screw rod 70 stops moving downwards to complete the blocking process of the air leakage position;
4: when the resetting device is needed after the blockage is finished, the motor 44 is started to rotate reversely, so that the second cam 45 is driven to rotate reversely through mechanical transmission, the push plate 36 is pushed leftwards, the hemp rope 57 is tensioned, the transmission cavity 66 is pulled to move leftwards, the connecting block 63 is separated from the lower side of the fixing plate 62, the sliding gear 29 moves upwards to reset under the action of the reciprocating spring 59, the pull rope 26 is loosened, the sliding gear 29 loses the pulling force of the pull rope 26, moves upwards to reset under the action of the pulling force of the resetting spring 30 and is meshed with the threaded sleeve 53 again, the threaded sleeve 53 is driven to move upwards to reset, the motor 44 is turned off, and the operation process is completed;
the above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.