CN115598369A - Probe positioning device of main pump rotating speed sensor - Google Patents
Probe positioning device of main pump rotating speed sensor Download PDFInfo
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- CN115598369A CN115598369A CN202211151529.4A CN202211151529A CN115598369A CN 115598369 A CN115598369 A CN 115598369A CN 202211151529 A CN202211151529 A CN 202211151529A CN 115598369 A CN115598369 A CN 115598369A
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- probe
- main pump
- positioning
- speed sensor
- movable seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
Abstract
The invention relates to a probe positioning device of a main pump rotating speed sensor, which is used for positioning a probe arranged on a main pump main shaft. The slippery setting element of probe simulator can be relative main pump main shaft's axial and radial movement, when rotating to the probe position, can fix a position the probe as the benchmark, has confirmed the relative position of probe and main pump main shaft, simple structure, and the locate mode is simple and convenient swift, has promoted location efficiency.
Description
Technical Field
The invention relates to the field of nuclear power, in particular to a probe positioning device of a main pump rotating speed sensor.
Background
The reactor coolant pump of the nuclear power plant is called a main pump for short, and the function of the main pump is to enable the coolant to form forced circulation, so that heat energy generated in the reactor is transmitted to a steam generator to generate steam to drive a steam turbine to do work. In order to ensure the normal operation of the main pump, the operation state of the main pump needs to be monitored, wherein the operation speed of the main pump can be effectively monitored by adopting the main pump speed sensing device.
Main pump rotational speed sensing device generally adopts the reluctance type to measure the principle, for the design of U type groove, mainly includes two parts, probe and speed sensor, wherein, the probe is fixed on the main shaft of main pump to can rotate along with the main pump main shaft, speed sensor is fixed in outside on the support, and this speed sensor is in quiescent condition, can produce a pulse signal when the main pump main shaft rotates and drives probe cutting main pump speed sensor, can realize the measurement of main pump rotational speed through measuring this signal.
Because need carry out the dismouting to main pump rotational speed sensing device during at every turn reloading, lead to the probe after the installation to have certain gradient, can influence rotational speed measuring accuracy and stability to a certain extent.
Therefore, the probe needs to be positioned, but the normal operation of the main pump main shaft cannot be influenced in the positioning process of the probe, otherwise, the positioning result deviates from the actual result, and the normal power generation of the main pump is influenced.
Disclosure of Invention
The invention aims to solve the technical problem that a probe of a main pump rotating speed sensor is inclined due to repeated assembly and disassembly of the main pump rotating speed sensor in the prior art, and provides a probe positioning device of the main pump rotating speed sensor.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a main pump speed sensor probe positioning device for positioning a probe installed on a main pump main shaft, wherein the positioning device comprises a probe simulator;
the probe simulator comprises a base, a positioning piece and an adjusting piece, wherein the positioning piece is arranged on the base and used for adjusting the positioning piece to be located on the base along the axial direction and the radial direction of a main pump spindle, so that the positioning piece can abut against the end portion and the side wall of a probe.
In some embodiments, the positioning member includes a positioning head, the positioning head includes a first section and a second section that are bent in sequence, the first section can abut against the end portion of the probe, and the second section can abut against the side wall of the probe.
In some embodiments, the adjusting member includes a first movable seat and a second movable seat, the first movable seat and the base can move axially along a main pump spindle, the second movable seat and the first movable seat can move radially along the main pump spindle, and the positioning member is mounted on the second movable seat.
A first guide structure for guiding the first movable seat is arranged on the base, and a second guide structure for guiding the second movable seat is arranged on the first movable seat;
the first guide structure is guided in the axial direction of the main pump main shaft, and the second guide structure is guided in the radial direction of the main pump main shaft.
In some embodiments, the first guide structure is a guide slot and/or rail and the second guide structure is a guide slot and/or rail.
In some embodiments, the probe simulator further includes a first adjusting member for moving the first movable seat, and a second adjusting member for moving the second movable seat.
In some embodiments, the base is provided with a positioning surface which is matched with the outer wall surface of the main pump main shaft.
In some embodiments, the positioning surface is a cambered surface and is matched with the outer wall surface of the main pump main shaft in shape.
In some embodiments, the positioning device further comprises a mounting assembly arranged around the periphery of the main pump main shaft, and the base is slidably mounted on the mounting assembly so as to be capable of rotating along the mounting assembly.
In some embodiments, the mounting assembly comprises an annular enclosure for detachable connection with an outer ring of the main pump main shaft, and mounting feet connected with the annular enclosure and extending towards an inner ring of the annular enclosure, the mounting feet for detachable connection with an end face of the main pump main shaft;
the annular enclosure and/or the mounting feet are used for being magnetically connected with the main pump main shaft.
The probe positioning device of the main pump rotating speed sensor has the following beneficial effects: the probe simulator is arranged on the mounting assembly in a sliding mode, so that the probe simulator can rotate around the axis of the main pump main shaft along the mounting assembly in a circular mode, the probe on the main pump main shaft can rotate relatively, the probe can be positioned as a reference when the probe simulator rotates to the position of the probe, the relative position of the probe and the main pump main shaft is determined, the structure is simple, the positioning mode is simple, convenient and fast, and the positioning efficiency is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of an assembly structure of a main pump spindle, a probe, a mounting assembly, a probe simulator and a rotation speed sensor in an embodiment of the invention;
FIG. 2 is a schematic perspective view of the main pump spindle, the probe, the mounting assembly, the probe simulator, and the rotation speed sensor of FIG. 1;
FIG. 3 is an exploded schematic view of the main pump spindle, probe, mounting assembly, probe simulator, and rotational speed sensor of FIG. 1;
FIG. 4 is an assembled schematic view of the base, adjustment member, and pan/tilt head of the probe simulator of FIG. 4;
FIG. 5 is a schematic illustration of the position of the probe and the rotational speed sensor of FIG. 1;
FIG. 6 is a schematic view of the probe and positioning member of FIG. 1;
FIG. 7 is a schematic diagram showing the positions of the probe, the rotational speed sensor and the positioning member in FIG. 1;
fig. 8 is a schematic view of the installation of the revolution speed sensor.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3 below, a main pump rotational speed probe 1 is fixed to a main pump main shaft 2 to be rotatable with the main pump main shaft 2, and the probe 1 is preferably provided on an outer wall surface of the main pump main shaft 2.
A main pump speed sensor probe positioning device is constructed in one embodiment of the present application and includes a mounting assembly 31 and a probe simulator 32.
The probe simulator 32 comprises a positioning part 321, a base 322 and an adjusting part 323, wherein the positioning part 321 is provided with a positioning head B, the positioning part 321 is arranged on the base 322, and the adjusting part 323 is used for driving the positioning part 321 to move on the base 322 along the axial direction and the radial direction of the main pump spindle 2, so that the positioning part 321 can abut against the end part and the side wall of the probe 1.
In this embodiment, for convenience of positioning the end portion and the bottom surface of the probe 1 and the top surface, the positioning head B is L-shaped, and includes the first section and the second section which are bent in sequence, the first section B1 can abut against the end portion of the probe 1, the second section B2 can abut against the side wall of the probe 1, and generally, the two side surfaces of the inner side of the included angle of the positioning head 3211 can be positioned on the end portion and the bottom surface of the probe 1 respectively or positioned on the end portion and the top surface of the probe 1 respectively.
The positioning head 3211 of L shape appearance rule, the size is easily managed and controlled, can promote the positioning accuracy to probe 1. In other embodiments, the positioning head 3211 of the positioning element 321 may also be formed in other shapes, and a first positioning area B1 and a second positioning area B2 may be formed on the positioning head 3211, where the first positioning area B1 positions the end of the probe 1, and the second positioning area B2 positions the bottom surface or the top surface of the probe 1. The first positioning area B1 and the second positioning area B2 can be planes, curved surfaces or pointed structures. Of course, the positioning head 3211 may also be U-shaped, and three surfaces in the U-shaped opening can position the end, bottom, and top surfaces of the probe 1, respectively.
The positioning member 321 is made of 316 stainless steel material, and the processing precision is 5um.316 stainless steel materials, rust prevention, corrosion prevention, high strength and bump prevention; the design of parts is minimized, and the assembly error inside the component is eliminated; the design of miniaturization, high precision and high reliability is realized.
The positioning head B positions the end of the probe 1, and the bottom surface of the probe 1, respectively, while the probe simulator 32 moves in the axial and radial directions of the main pump spindle 2.
Of course, the positioning head B may position the end of the probe 1 and the top surface of the probe 1, or position the end of the probe 1 and the top and bottom surfaces of the probe 1.
By adopting the positioning head B, the relative position of the probe 1 and the main pump spindle 2 can be determined after the relative positions of the probe 1 and the positioning piece 321 are positioned under the cold shutdown condition, the structure is simple, the positioning mode is simple, convenient and quick, and the positioning efficiency is improved.
In some embodiments, the mounting assembly 31 is disposed around the main pump main shaft 2 for positioning with the end face and the outer ring of the main pump main shaft 2, forming a fixed positioning reference relative to the main pump main shaft 2, and providing a positioning reference for mounting the probe simulator 32.
The probe simulator 32 is slidably mounted on the mounting assembly 31, and the probe simulator 32 can rotate along the mounting assembly 31 in a circular manner around the axis of the main pump spindle 2, so that the probe simulator 32 can rotate relative to the probe 1 on the main pump spindle 2, and when the probe simulator is rotated to the position of the probe 1, the probe simulator can be used as a reference to position the probe 1.
In some embodiments, the mounting assembly 31 includes an annular surrounding ring 311 and mounting feet 312, further, the size of the inner ring of the annular surrounding ring 311 is equivalent to the size of the outer ring of the main pump spindle 2, so as to be located on the outer wall surface of the main pump spindle 2, the annular surrounding ring 311 can be used as a reference for the outer wall surface, and in addition, the mounting feet 312 are distributed along the circumferential direction of the annular surrounding ring 311, connected with the annular surrounding ring 311, so as to be located on the end surface of the main pump spindle 2, so that the mounting feet 312 can be used as the location of the end surface of the main pump spindle 2.
The mounting component 31 is positioned with the outer wall surface and the end surface of the lower end of the main pump spindle 2, so that multi-directional reference can be provided for positioning of the probe simulator 32, and positioning is more accurate. In other embodiments, the mounting assembly 31 may be positioned on the outer wall surface and the end surface of the upper end of the main pump main shaft 2.
In this embodiment, the annular surrounding ring 311 and the mounting feet 312 are both positioned on the main pump spindle 2 in a magnetic adsorption manner, and certainly, in other embodiments, the annular surrounding ring 311 may only be positioned in a magnetic adsorption manner, or the mounting feet 312 may only be positioned in a magnetic adsorption manner, so that it is possible to ensure that the mounting assembly 31 is stably and reliably positioned.
In this embodiment, all be equipped with the mounting groove a that supplies the magnet installation on annular enclosure 311 and the installation foot 312, it has a plurality of mounting grooves a to distribute along the border interval on the outer wall of annular enclosure 311, lets magnet side direction card go into.
Preferably, the mounting feet 312 extend along the radial direction of the annular ring 311, so that the mounting feet 312 are distributed more uniformly and stressed more stably.
Further, in this embodiment, the annular surrounding ring 311 includes four arc surrounding tables 3111 distributed along the circumferential direction, each surrounding table 3111 is spliced into a circular ring shape along the circumferential direction, and each surrounding table 3111 is provided with two mounting feet 312.
It is understood that, in other embodiments, the annular surrounding ring 311 may also include two or more segments of other numbers of the arc-shaped surrounding platforms 3111 distributed along the circumferential direction, the arc-shaped surrounding platforms 3111 are spliced into the annular shape along the circumferential direction, and the number of the mounting feet 312 on each surrounding platform 3111 may also be one or more other numbers.
Further, the mounting feet 312 may be integrally formed with the annular ring 311, and when the annular ring 311 is disposed in sections, the mounting feet 312 may also be integrally formed with the arc-shaped surrounding platform 3111.
Preferably, each arc surrounding table 3111 is a single part, the arc surrounding table 3111 is magnetically attracted to the side surface of the main pump spindle 2, the mounting foot 312 integrally designed with the arc surrounding table 3111 is magnetically attracted to the bottom surface of the main pump spindle 2, the arc surrounding table 3111 is made of 316 stainless steel, the machining precision is 5um, rust and corrosion resistance and high-strength anti-collision performance can be achieved, the number of parts is extremely reduced, and assembly errors inside the parts are eliminated; the design of miniaturization, high precision and high reliability is realized.
Preferably, in order to ensure the mounting accuracy of the mounting assembly 31, the mounting assembly 31 is made of 316 stainless steel which is integrally machined and made of the same material, so that deformation of a large extent in the placing or moving process is avoided.
Preferably, in order to ensure that the movement locus of the probe simulator 32 is accurate, a guide structure for slidably mounting the probe simulator 32 is arranged on the mounting assembly 31, and the probe simulator 32 rotates circularly around the axis of the main pump spindle 2 along the mounting assembly 31, generally, the probe simulator 32 is in sliding fit with the guide structure, so that the probe simulator 32 rotates more smoothly, and the probe simulator 32 ensures that the axial height and radial displacement of the probe simulator 32 change within a controllable range and do not change obviously in the moving process.
Further, the guide structure is detachably mounted on the mounting assembly 31 for easy assembly. In this embodiment, the guide structure is magnetically attracted to the mounting assembly 31, improving the stability of the attraction. Preferably, the guiding structure is an annular guide rail arranged on the annular surrounding ring 311 along the circumference of the main pump main shaft 2, and in some embodiments, the guiding structure is detachably mounted on the annular surrounding ring 311, but of course, the guiding structure may also be directly formed on the annular surrounding ring 311, such as a guiding groove.
Referring to fig. 1 to 4, the present application also constructs a probe rotation simulating device of a main pump rotation speed sensor, which is used for simulating the rotation of a probe on a main shaft 2 of a main pump.
Further, the simulation rotating device comprises a positioning component 31 and a probe simulator 32, and the mounting component 31 is arranged around the periphery of the main pump spindle 2.
The probe simulator 32 comprises a positioning member 321, a base 322, and an adjusting member 323, wherein the positioning member 321 is mounted on the adjusting member 323, and the adjusting member 323 is movably mounted on the base 322 for driving the positioning member 321 to move along the radial direction and the axial direction of the main pump spindle 2 to be positioned with the probe.
The base 322 is slidably mounted to the mounting assembly 31 for sliding the positioning member along the mounting assembly. Because the probe simulator 32 can rotate along the mounting assembly 31 in a circular manner around the main pump spindle 2, relative rotation is generated between the probe 1 and the simulated rotation device to simulate the rotation of the probe 1.
The probe simulator 32 of the simulation rotating device rotates relative to the probe 1 on the main pump main shaft 2, the relative probe 1 rotates relatively, the rotation of the probe 1 can be simulated, and the relative position between the probe and the main pump main shaft during rotation is utilized, so that whether the positioning of the probe 1 is accurate or not is judged, the process can be carried out under the shutdown state of the main pump main shaft 2, and the efficiency is improved.
Preferably, the adjusting part 323 is positioned on the base 322 by magnetic adsorption, and further, the adjusting part 323 can be embedded on the base 322 and combined by embedding and adsorption, so that the positioning is accurate and the stability is good. It is understood that the magnetic attraction or embedding mode can be adopted for positioning.
When the magnetic adsorption mode is adopted for positioning, the magnets can be distributed, so that the magnetic attraction force is more uniform and balanced. Further, magnetic adsorption is adopted, and the following effects are achieved:
1. the contact surfaces of the two parts which are magnetically attracted with each other are complete and smooth, so that the interference on the magnetic attraction effect and the movement effect can be eliminated;
2. the magnetic attraction force is uniformly distributed, the size of the magnetic attraction force can be adjusted, the adsorption is reliable, and the installation, the disassembly and the movement of the probe simulator 32 are convenient;
3. on the premise of miniaturization and strength guarantee, the weight of parts can be reduced, and the light weight design is facilitated.
The base 322 of the probe simulator 32 is also made of 316 stainless steel material, and the processing precision is 5um; the lower end surface of the base 322 and the annular surrounding ring 311 are also installed in a magnetic attraction manner.
The surface of the base 322 matched with the main pump main shaft 2 adopts the fitting design with the circumferential surface of the main pump main shaft 2, the bottom of the base 322 is provided with an embedded, distributed and programmable sheet-shaped magnet bin C corresponding to the circumferential surface of the main pump main shaft 2 and a soft iron belt bin magnetically attracted with the annular surrounding ring 311, and in addition, the embedded sheet-shaped magnet is designed on the annular surrounding ring 311, so that the magnet can not be used any more at the part corresponding to the base 322 magnetically attracted with the annular surrounding ring 311, but a soft iron belt is adopted.
In some embodiments, referring to fig. 3 and 4, the adjusting member 323 includes a first movable seat 3231 and a second movable seat 3232, the first movable seat 3231 and the base 322 are movable along an axial direction of the main pump spindle 2, the second movable seat 3232 and the first movable seat 3231 are movable along a radial direction of the main pump spindle 2, and the positioning member 321 is mounted on the second movable seat 3232.
Further, be equipped with on the base 322 and be used for the first guide structure for first movable seat 3231 direction, so that can relative movement between first movable seat and the base, be equipped with on the first movable seat 3231 and be used for the second guide structure for second movable seat 3232 direction, so that can relative movement between second movable seat and the first movable seat, when adjusting first movable seat and second movable seat, thereby can realize the position control of setting element 321, be convenient for adjust the position of setting element 321 in order to fix a position probe 1.
Preferably, the first guide structure is guided along the axial direction of the main pump spindle 2, the second guide structure is guided along the radial direction of the main pump spindle 2, one is guided along the axial direction of the main pump spindle 2, and the other is guided along the radial direction of the main pump spindle 2, so that the position adjustment of the positioning member 321 in different directions can be realized, and the adjustment is more accurate and flexible; the second guide structure includes the guide rail that sets up between second sliding seat and second sliding seat, and this guide rail is along main pump main shaft 2's radial extension to make the second sliding seat along main pump main shaft 2's radial reciprocating motion for first sliding seat, thereby drive the radial reciprocating motion of setting element along main pump main shaft 2. In other embodiments, the guiding directions of the first guiding structure and the second guiding structure may also form an included angle, so as to facilitate adjusting the position of the positioning element 321 in different directions.
Of course, in other embodiments, the first guiding structure is a guiding groove, and may also be a combination of a guiding groove and a guiding rail, which can provide stable guiding. Further, the second guide structure is a guide groove, and may also be a combination of a guide groove and a guide rail, so as to provide stable guiding.
The probe simulator 32 further includes a measuring assembly 324, and the measuring assembly 324 further includes a first adjusting member 3241 for driving the first movable seat 3231 to move, and a second adjusting member 3242 for driving the second movable seat 3232 to move, so that when the first movable seat 3231 and the second movable seat 3232 are driven to move, the positioning head 3211 is driven to move.
The first adjusting member 3241 is rotatably disposed on the base and rotatably engaged with the first movable seat, and the second adjusting member 3242 is rotatably disposed on the first movable seat and rotatably engaged with the second movable seat.
The measurement assembly 324 of the probe simulator 32 may optionally be a miniaturized precision stage, typically LE40-L, which may be used to detect the movement displacement of the base 322 and the adjustment member 323, the stage having a range of motion of 10mm.
In this embodiment, the first adjusting element 3241 and the second adjusting element 3242 may be knobs on two pan/tilt heads, respectively, and the position of the positioning element 321 on the adjusting element 323 can be adjusted and moved by rotating the knobs.
The original spiral micrometer of the holder of the measuring assembly 324 is replaced by the digital micrometer DMH-1, the digital micrometer DMH-DL-U is communicated with the display, the digital micrometer with a digital interface is used, the measured value of the multidimensional gap is displayed in a centralized manner, and the first adjusting piece 3241 and the second adjusting piece 3242 can measure the moving displacement of the positioning piece 321 in the adjusting process.
As shown in fig. 4, in order to facilitate the simulation of the positioning of the rotating device and improve the positioning accuracy, a positioning surface D that is matched with the outer wall surface of the main pump spindle 2 is provided on the base 322, and the surface of the main pump spindle 2 is used for positioning, so that the reference is stable and the deviation is not easy to occur.
Preferably, positioning surface D on base 322 is the cambered surface, and matches with the outer wall surface appearance of main pump main shaft 2, relies on positioning surface D to laminate to the outer wall surface of main pump main shaft 2, realizes the location. In other embodiments, the positioning surface D on the base 322 may also be provided with a plurality of positioning protrusions, and each protrusion can be attached to the surface of the main pump spindle 2, so as to position the base 322.
Further, the mounting assembly 31 is positioned with the end face and the outer ring of the main pump spindle 2, the base 322 is magnetically adsorbed on the mounting assembly 31, and the base 322 is positioned by the mounting assembly 31, so that the positioning is more stable and reliable.
After the probe simulator 32 finishes positioning the probe 1, the rotation speed sensor 4 can finish detecting the rotation speed of the probe 1.
Generally, the rotation speed sensor 4 adopts a reluctance type measurement principle, and a sensing groove 41 is formed in the rotation speed sensor 4, in this embodiment, the sensing groove 41 is U-shaped, when measuring the rotation speed of the probe 1, the sensing groove 41 of the rotation speed sensor 4 is located at one end opposite to the main pump main shaft 2, the sensing groove 41 penetrates along the circumferential direction of the main pump main shaft 2, preferably, the width of the sensing groove 41 is greater than the thickness of the probe 1, and the probe 1 and the positioning head 3211 for positioning the probe 1 can be clamped in and then pass through simultaneously during the rotation process.
Combine fig. 5 to fig. 8 to show, the application still discloses a main pump speed sensor timing device for speed sensor to main pump main shaft 2 carries out the timing, is provided with probe 1 on the outer wall of main pump main shaft 2, and speed sensor 4 is equipped with along the sensing groove 41 that circumference runs through with the relative one end of main pump main shaft 2, and the sensing groove is used for supplying the probe to rotate and passes through.
The adjusting device comprises a mounting bracket 5 and a probe simulator 32, wherein the mounting bracket 5 is arranged on the main pump shell and is used for mounting a rotation speed sensor 4, and the rotation speed sensor 4 is used for detecting the rotation speed of the probe 1 along with the rotation of the main pump main shaft 2.
On main pump speed sensor 4 was fixed in installing support 5, was in quiescent condition, can produce a pulse signal when main pump main shaft 2 rotated and drove 1 cutting speed sensor 4 of probe, so the main pump normal operating, speed sensor 4 can produce a specific frequency signal, through the measurement of this signal measurement realization main pump rotational speed.
Preferably, the mounting bracket 5 is mounted on the pump body and supported by the pump body, so that the mounting bracket 5 can be mounted more stably, further, the position of the mounting bracket 5 on the pump body can be adjusted, and further, when the position of the mounting bracket 5 is adjusted, the position of the rotation speed sensor 4 relative to the probe 1 is adjusted.
Probe 1 and positioning head 3211 rotate through the sensing groove, through first regulating part 3241, second regulating part 3242 of adjusting measuring subassembly 324, let positioning head 3211 remove, when removing, measuring subassembly 324 can measure positioning head 3211's removal displacement, obtains the relative position before and after removing, and measuring subassembly 324 obtains positioning head 3211 to the axial inside wall of sensing groove 41, the distance of radial diapire.
Preferably, the position of the rotation speed sensor 4 on the mounting bracket 5 is adjustable, the position of the rotation speed sensor 4 relative to the probe 1 and the positioning part 321 can be adjusted, the relative position between the rotation speed sensor 4 and the probe 1 is accurate, and the requirement that the rotation speed sensor 4 performs normal rotation speed detection on the probe 1 is met.
In some embodiments, the first mounting hole 42 is formed in the rotation speed sensor 4, the first locking member passes through the first mounting hole 42 and then is locked to the mounting bracket 5, and the first locking member is in clearance fit with the first mounting hole 42, so that the rotation speed sensor 4 can be laterally adjusted in position relative to the first locking member, and the rotation speed sensor 4 can meet the requirement of relative position with the probe 1.
Further, in the present embodiment, the axial direction of the first mounting hole 42 is the same as the penetrating direction of the sensing groove 41, and due to the clearance fit between the first mounting hole 42 and the first locking member, the rotational speed sensor can be shifted from different sides of the first locking member, so that the rotational speed sensor 4 can be adjusted in position in the horizontal direction and the vertical direction relative to the probe 1, and at the same time, the swinging direction of the rotational speed sensor 4 can be adjusted.
Preferably, the mounting bracket 5 is provided with a second mounting hole 51, and the second locking piece passes through the second mounting hole 51 and then is locked on the pump body; clearance fit between second closure and the second mounting hole 51 can let rotational speed sensor 4 adjust the position to the second closure side direction relatively to let rotational speed sensor 4 satisfy with probe 1 between the relative position demand.
Further, in order to realize multidirectional adjustment, an included angle is formed between the axial direction of the first mounting hole 42 and the axial direction of the second mounting hole 51, and the axial direction of the second mounting hole 51 is the same as the axial direction of the main pump spindle 2, so that the position of the rotation speed sensor 4 in the horizontal direction can be adjusted relative to the probe 1, and meanwhile, the swing direction of the rotation speed sensor 4 can also be adjusted.
In general, since the relative position between the main pump speed probe 1 and the main pump speed sensor 4 directly affects the accuracy and stability of the measurement, strict requirements are imposed on the installation of the main pump speed probe 1 and the main pump speed sensor 4.
The main pump rotating speed probe 1 is placed in the middle of a sensing groove 41 of a main pump rotating speed sensor 4 by a main shaft 2 of the disc-driven main pump, and the gap between the main pump rotating speed probe 1 and the sensing groove 41 needs to be measured, wherein the measured gap comprises the upper gap of the sensing groove 41, the lower gap of the sensing groove 41 and the bottom gap between the probe 1 and the sensing groove 41, so that whether the installation standard requirement is met is judged.
Further, another embodiment of the present application further discloses a method for installing a spindle speed sensor 4, which includes the following steps:
circularly rotating the probe simulator 32 around the axis of the main pump spindle 2 to the sensing groove 41 of the rotating speed sensor 4;
adjusting the position of the mounting bracket 5, locking the mounting bracket 5 when the positioning head 3211 and the sensing groove 41 of the probe simulator 32 are in contact with the side surface of the main pump spindle 2 opposite to each other, and obtaining a top gap d of the sensing groove x ；
When the positioning head 3211 contacts the lower side surface of the sensing groove 41, a lower sensing groove gap h is obtained dy ；
When the positioning head 3211 contacts the upper side of the sensing groove 41, a gap h is obtained above the sensing groove uy ；
Confirming the gap h above the sensing groove uy A gap h below the sensing groove dy The requirement is met, otherwise, the upper and lower positions of the rotating speed sensor 4 are adjusted to reach the gap h on the sensing groove uy A gap h below the sensing groove dy After the requirements are met, the mounting bracket 5 is locked.
Further, the gap on the sensing groove satisfies the formula: h is uy ＝Δh uy +h sy -h hy Wherein, Δ h uy For sensing the amount of upward movement of the tank, h sy To position the height of the vertical edge of the head 3211, h hy Is the height of the transverse edge of the positioning head 3211;
the gap requirement on the sensing groove meets the range: h is a total of ub ±h uj Wherein h is ub Mounting a standard value for the gap on the sensing groove, h uj The gap installation precision on the sensing groove is measured;
in the adjusting process, if the upper clearance of the sensing groove meets the following requirements: h is ub -h uj ≤h uy ≤h ub +h uj And then the installation of the rotating speed sensor meets the installation requirement.
Further, the sensing under-groove clearance satisfies the formula: h is a total of dy ＝Δh dy +h hy Wherein h is dy For sensing the gap under the groove, h hy To locate the height of the lateral edge of head 3211, Δ h dy For sensing the tank down shift amount;
required range of gap under sensing groove: h is a total of db ±h dj Wherein h is db For sensing the installation of a reference value, h, for the gap under the groove dj The accuracy of the installation of the lower gap of the sensing groove is measured;
during the adjustment, if h db -h dj ≤h dy ≤h db +h dj The installation requirements are met.
Further, the vertical side thickness h of the positioning head 3211 sx ＝d b Wherein h is sx To locate the head 3211 vertical edge thickness, d b Installing a standard value for the top clearance of the sensing groove;
adjust the secondA locking piece, when the top plane of the U-shaped sensing groove is contacted with the vertical edge plane of the positioning head 3211, the second locking piece is locked, and the mode ensures the top clearance d of the sensing groove x ＝d b Realizing the required range d of the top clearance of the sensing groove b ±d j Wherein d is j The mounting requirement is met if the mounting precision of the top clearance of the sensing groove is high;
in the adjusting process, if the height h of the transverse edge of the positioning head 3211 is adjusted hy ＝h db -0.8*h dj Wherein h is db For sensing the installation of a reference value, h, for the gap under the groove dj In order to sense the mounting accuracy of the gap under the groove,
this height design ensures that the positioning member 321 can normally enter the sensor sensing slot 41, and also ensures that there is 0.2 × h dj The qualified margin meets the installation requirement;
if the positioning head 3211 vertical edge height h sy ≥h t The thickness of the probe 1 is h t If the thickness is not less than 4 +/-0.1 mm, the installation requirement is met;
h hy to position the height of the transverse edge of the head 3211, h sy To locate the height of the vertical side of the head 3211, h db For sensing the installation of a reference value, h, for the gap under the groove dj To sense the gap installation accuracy under the slot.
The rotating speed sensor 4 is installed on the installation support 5 through a first locking piece, and the installation support 5 is installed on a main pump body through a second locking piece. The rotation speed sensor 4 can be adjusted to move forwards and backwards through the second locking piece; the sensor can be adjusted to move forwards and backwards, move upwards and downwards and rotate for a certain angle through the first locking piece.
When the locking device is installed, the second locking piece is firstly positioned, and the gap d at the top of the profiled groove is adjusted by the second locking piece x . Sensing the gap h in the groove if the second locking member is positioned uy A gap h below the sensing groove dy And a sensing groove top gap d x And if the requirements of the installation standard are all met, the first locking piece does not need to be adjusted, and if the requirements of the installation standard are not met, the first locking piece needs to be adjusted.
And measuring the gap between the rotating speed sensor 4 and the probe 1, and measuring and confirming the starting state of the platform top shaft oil pump at 2.5 Mpa.
The measuring part for measurement has the same shape and size as those of the positioning head 3211 of the positioning part 321, is a high-precision workpiece, and has the following specific dimensions:
height h of transverse edge of measuring part hy ＝h db -h dj Wherein h is db For sensing the installation of a reference value, h, for the gap under the groove dj The accuracy of the installation of the lower gap of the sensing groove is measured;
height h of vertical edge of measuring part sy ≥h t The thickness of the probe 1 is h t ＝4±0.1mm，；
Thickness h of vertical edge of measuring piece sx ＝d b -d j Wherein d is b For sensing the tank top clearance mounting reference value, d j The top gap of the groove is sensed and installed with precision.
Specifically, the method comprises the following measuring steps:
the main pump spindle 2 is driven to rotate, and the probe 1 is rotated to the sensing groove 41 of the rotating speed sensor 4;
moving the measuring part around the main pump spindle 2 along the guide mechanism of the annular enclosure 311, and moving the measuring part to the rotating speed sensor 4;
using a high-precision two-dimensional moving device to make the top of the probe 1 contact with the inner plane of the vertical edge of the measuring part, and making the lower plane of the probe 1 contact with the upper plane of the transverse edge of the measuring part to obtain the datum location of the measuring part;
when the plane of the U-shaped top is in contact with the outer plane of the vertical edge of the measuring part, the top gap of the sensing groove is obtained;
a high-precision two-dimensional moving device is used for contacting the lower plane of the transverse edge of the measuring part with the lower plane of the sensing groove 41 to obtain a lower gap of the sensing groove;
and (3) using a high-precision two-dimensional moving device to make the upper plane of the measuring piece and the upper plane of the sensing groove 41 contact to obtain the gap on the sensing groove.
The measuring part is arranged on a high-precision two-dimensional moving device, so that the movement in the two-dimensional directions of the x axis and the y axis is realized, and the high-precision measurement is carried out on the movement amount.
The reference speed sensor 4 is calibrated, and similarly, the gap h on the sensing groove uy ＝Δh uy +h sy -h hy Wherein, Δ h uy For sensing the amount of upward movement of the tank, h sy To locate the height of the vertical edge of head 3211, h hy The height of the transverse edge of the positioning head 3211;
required range of gap on sensing groove: h is ub ±h uj Wherein h is ub For sensing the gap in the tank, a reference value, h uj The gap installation precision on the sensing groove is measured;
if h is ub -h uj ≤h uy ≤h ub +h uj If the installation requirement is met, displaying green on the display picture, otherwise, displaying red.
Sensing the gap h under the groove dy ＝Δh dy +h hy Wherein h is dy For sensing the gap under the groove, h hy To position the height of the lateral edge of head 3211, Δ h dy For sensing the tank down-shift amount;
required range of gap on sensing groove: h is db ±h dj Wherein h is db For sensing the mounting standard value of the under-groove clearance, h dj The accuracy of the installation of the lower gap of the sensing groove is measured;
if h is db -h dj ≤h dy ≤h db +h dj If the installation requirement is met, displaying green on the display picture, otherwise, displaying red.
Sensing groove top clearance d x ＝h sx +Δd x ；
Required range of top gap of sensing groove: d is a radical of b ±d j Wherein h is sx To locate the vertical edge thickness of the head 3211, d b For sensing the tank top clearance mounting reference value, d j The mounting precision of the top clearance of the sensing groove is measured;
if d is b -d j ≤d x ≤d b +d j If the installation requirement is met, displaying green on the display picture, otherwise, displaying red.
Wherein the sensor slot is moved up by an amount Δ h uy The amount of groove down movement Δ h is sensed dy The advancing amount of the top gap of the sensing groove Deltad x 。
Has the following innovation points:
(1) the adjusting device has the characteristics of miniaturization, light weight, collision prevention, rust prevention, corrosion prevention, simple and easy field operation, extremely small part number, high precision and high reliability.
(2) The adjusting device and the displacement sensor have no mechanical interference, and the adjusting device, the probe 1 and the rotating speed sensor 4 have no mechanical interference.
(3) Under the cold condition of shutting down, probe 1 is in any position on the main shaft, and the timing device only needs once simply to install, just can realize fast that main pump main shaft 2 rotates the simulation, carries out real-time high accuracy synchronous measurement to probe 1 and sensing groove top clearance, upper gap and lower clearance to can present with the digital display form, adopt green sign if data is qualified, adopt red sign if data is unqualified, realize rotational speed sensor 4 timing installation.
(4) The surrounding table 3111 is designed in an integrated manner with 4 sections, and each section is a single part; the probe simulator 32 employs a single part design; the number of parts is reduced, the assembly error in the part is eliminated, and the design of miniaturization, high precision and high reliability is realized; 316, anti-collision, rust-proof and corrosion-proof.
(5) The adjusting device does not need any tool during field installation and disassembly; the side surfaces of the integrally designed surrounding table 3111 and the main shaft with 4 petals and the bottom feet of the integrally designed surrounding table 3111 and the bottom surface of the main shaft adopt a magnetic attraction mode; the holder base and the main shaft of the measuring component 324 with 2 degrees of freedom in the axial and radial directions and the surrounding table 3111 are magnetically attracted; the magnetic attraction adopts a magnet embedded, distributed and programmable design scheme.
(6) In the research and development process of the adjusting device, the main shaft simulation debugging rack is made of the same material as the main shaft, and the magnetic attraction force between the enclosing table 3111 and the side surface of the main shaft and between the bottom foot of the enclosing table 3111 and the bottom surface of the main shaft in the integrated design is proper, uniform in magnetic attraction distribution, convenient to assemble and disassemble and reliable in adsorption by adjusting the magnetic force design of the sheet-shaped magnets and the quantity and distribution of the sheet-shaped magnets; the force of the magnetic attraction between the holder base of the measuring component 324 and the side surface of the main shaft and the surrounding table 3111 is proper, the magnetic attraction distribution is uniform, the mounting, dismounting and moving are convenient, and the adsorption is reliable. The contact surfaces of the magnetic attraction are not provided with open holes and grooves, and are complete and smooth.
The installation adjusting window of the multi-base nuclear power unit main pump rotating speed sensor 4 is a platform with a loop pressure of 2.5Mpa, and the platform works on the main line path of the refueling overhaul, so that the refueling overhaul period and the unit generating capacity are directly influenced; if the nuclear power generating set is optimized and adjusted to a cold state window, namely a loop pressure 0Mpa platform is used, the main line time for refueling and overhaul can be saved by about 3 hours, the generating capacity of the nuclear power generating set is effectively improved, and the economic and social benefits are remarkable.
The device and the method for adjusting the main pump rotating speed sensor in the cold shutdown condition are researched, the main pump rotating speed sensor 4 is adjusted under the cold shutdown condition, the production process is optimized and improved, and great production value can be created. Meanwhile, the existing method for calibrating the rotating speed sensor of the main pump has universality for domestic multi-base nuclear power units and foreign French EDF nuclear power units, research results have obvious reference and reference significance, and the method has wide popularization and use values.
It is to be understood that the above-described technical features may be used in any combination without limitation.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (10)
1. A probe positioning device of a main pump rotating speed sensor is used for positioning a probe (1) arranged on a main pump main shaft (2), and is characterized by comprising a probe simulator (32),
the probe simulator (32) comprises a positioning piece (321), a base (322) and an adjusting piece (323), wherein the positioning piece (321) is arranged on the base (322), and the adjusting piece (323) is used for adjusting the positioning piece (321) to move on the base (322) along the axial direction and the radial direction of the main pump spindle (2) so that the positioning piece (321) can abut against the end part and the side wall of the probe (1).
2. The positioning device for the probe of the main pump rotational speed sensor, as set forth in claim 1, characterized in that said positioning member (321) comprises a positioning head (B), said positioning head (B) comprises a first section (B1) and a second section (B2) which are bent in sequence, said first section (B1) can abut against the end of said probe (1), and said second section (B2) can abut against the side wall of said probe (1).
3. The positioning device for the probe of the main pump rotational speed sensor, as set forth in claim 1, characterized in that said adjusting member (323) comprises a first movable seat (3231), a second movable seat (3232), said first movable seat (3231) and said base (322) being movable axially along the main pump spindle (2), said second movable seat (3232) and said first movable seat (3231) being movable radially along the main pump spindle (2), said positioning member (321) being mounted on said second movable seat (3232).
4. The device for positioning the probe of the main pump rotating speed sensor, according to the claim 3, is characterized in that a first guide structure for guiding the first movable seat (3231) is arranged on the base (322), and a second guide structure for guiding the second movable seat (3232) is arranged on the first movable seat (3231);
the first guide structure is guided in the axial direction of the main pump main shaft (2), and the second guide structure is guided in the radial direction of the main pump main shaft (2).
5. The main pump speed sensor probe positioning device of claim 4, wherein the first guide structure is a guide slot and/or rail and the second guide structure is a guide slot and/or rail.
6. The main pump rotational speed sensor probe positioning device according to any one of claims 3 to 5, characterized in that the probe simulator (32) further comprises a first adjusting member (3241) for moving the first movable seat (3231), and a second adjusting member (3242) for moving the second movable seat (3232).
7. The device for positioning the probe of the main pump rotational speed sensor according to any one of claims 1 to 5, characterized in that the base (322) is provided with a positioning surface (D) which is engaged with the outer wall surface of the main pump main shaft (2).
8. The device for positioning the probe of the main pump rotating speed sensor, according to claim 7, is characterized in that the positioning surface (D) is a cambered surface and is matched with the outer wall surface of the main pump spindle (2) in shape.
9. A main pump rotational speed sensor probe positioning device according to any one of claims 1 to 5, characterized in that the positioning device further comprises a mounting assembly (31) provided around the outer periphery of the main pump main shaft (2), and the base (322) is slidably mounted to the mounting assembly (31) so as to be rotatable along the mounting assembly (31).
10. A main pump rotational speed sensor probe positioning device according to claim 9, characterized in that said mounting assembly (31) comprises an annular enclosure (311) and mounting feet (312), said annular enclosure (311) being adapted to be removably connected with an outer ring of said main pump main shaft (2), said mounting feet (312) being connected with said annular enclosure (311) and extending towards an inner ring of said annular enclosure (311), said mounting feet (312) being adapted to be removably connected with an end face of said main pump main shaft;
the annular surrounding ring (311) and/or the mounting feet (312) are used for magnetic connection with the main pump main shaft (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151529.4A CN115598369A (en) | 2022-09-20 | 2022-09-20 | Probe positioning device of main pump rotating speed sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211151529.4A CN115598369A (en) | 2022-09-20 | 2022-09-20 | Probe positioning device of main pump rotating speed sensor |
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| CN202211151529.4A Pending CN115598369A (en) | 2022-09-20 | 2022-09-20 | Probe positioning device of main pump rotating speed sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061291A1 (en) * | 2022-09-20 | 2024-03-28 | 中广核核电运营有限公司 | Adjustment apparatus and adjustment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024061291A1 (en) * | 2022-09-20 | 2024-03-28 | 中广核核电运营有限公司 | Adjustment apparatus and adjustment method |
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