Positioning and adjusting dynamometer
Through the design of the positioning and adjustment force measuring device, the inertia overturning and stuck problems of the RIC system selector motor of the nuclear power plant is solved during shutdown and start-up, and the accurate adjustment of torque is achieved and the operation efficiency and safety of the nuclear power plant is improved.
Patent Information
- Application Number
- CN202421491201.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-26
AI Technical Summary
In the prior art, the selector motor of the RIC system of a nuclear power plant is prone to inertia overturning or stuck during shutdown and startup, and the lack of effective torque measurement tools leads to inaccurate adjustment.
A positioning and regulating force measuring device is provided, which adjusts the torque of the selector motor through the combination of the reference rod, the support part and the counterweight part, and uses the support part to engage with the driving gear. The counterweight part adjusts the torque at different positions, combining the scale line and the limiting part to ensure accuracy.
It improves the accuracy and repeatability of torque adjustment, simplifies the operation process, enhances the stability and safety of the RIC system in the nuclear power plant, and reduces maintenance costs.
Smart Images
Figure CN223140394U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of auxiliary instruments in nuclear power plants, and particularly relates to a positioning and adjusting force measuring device. Background Technique
[0002] The RIC system consists of three parts, namely the core temperature measurement system, the pressure vessel water level measurement system and the core neutron flux system. The selector is an important part of the core neutron flux measurement system. The selector realizes the switching of the measurement channel by rotating the positioning ring to change the channel for the neutron detector to enter. The motor installed on the selector provides the power for the rotation of the positioning ring.
[0003] The motor transmits the power to the positioning ring through structures such as the driving gear, the intermediate gear, and the driven gear. The specific process is that the motor works to provide rotational power, and the power is transmitted to the driving gear through the clutch. The driving gear transmits the power to the meshing intermediate gear, and the intermediate gear then transmits the power to the meshing driven gear. The driven gear is integrated with the positioning ring, and the power is transmitted to the positioning ring. When the motor stops, the positioning ring stops rotating. When the motor starts, the positioning ring starts to rotate. There are 10 round pits on the edge of the positioning ring. Every time the positioning ring rotates 36°, part of the volume of the small ball opposite the round pit will sink into the round pit. At this time, the motor stops rotating, and the holes on the positioning ring are communicated with the connecting pipes before and after the selector, and the detector can enter and exit this channel. After the motor starts again, the positioning ring continues to rotate under the power transmitted by the motor, and the small ball slides on the edge of the positioning ring out of the round pit. When the positioning ring rotates 36°, at this time, part of the volume of the small ball slides into another round pit, and the motor stops rotating. The holes on the positioning ring are communicated with other connecting pipes before and after the selector, and the detector can enter and exit this channel. In turn, every time the positioning ring rotates 36°, the selector completes the conversion of a channel.
[0004] In order to ensure that the positioning ring stops immediately when the motor stops rotating and does not have the over-rotation phenomenon caused by inertia, and at the same time can continue to rotate immediately when the motor starts and does not have the jamming phenomenon, therefore, when installing the selector, a torque measuring tool is needed to adjust the pre-tightening force of the small ball spring. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is to provide a positioning and adjusting force measuring device for the above problems.
[0006] The technical solution adopted by the utility model to solve the above technical problems is to provide a positioning and adjusting force measuring device for adjusting the torque of the selector motor used in the RIC system of a nuclear power plant, which includes a reference rod, a support part connected to one end of the reference rod, and a counterweight arranged on the reference rod;
[0007] The supporting part engages with the driving gear of the selector motor. The reference rod is provided with a first position and a second position. When the counterweight is arranged at the first position, the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate. When the counterweight is arranged at the second position, the driving gear rotates, and at this time, the torque of the selector motor is appropriate.
[0008] Further, it is preferred that an adjustment hole is radially formed on the outer wall of the supporting part, and a tightening adjustment member is inserted through the adjustment hole to adjust the engagement between the supporting part and the driving gear of the selector motor.
[0009] Further, it is preferred that the inner side wall of the supporting part is a semi-circular structure, and the side wall of the semi-circular structure matches the outer wall surface of the driving gear.
[0010] Further, it is preferred that a clamping groove is formed on the counterweight, the clamping groove matches the reference rod, the reference rod is inserted into the clamping groove, and the counterweight further includes a fastening member, and the fastening member fixes and limits the reference rod and the counterweight.
[0011] Further, it is preferred that a gasket is arranged between the fastening member and the counterweight.
[0012] Further, it is preferred that the fastening member is arranged at the edge of the clamping groove, the fastening member is a nut, and part of the nut limits the reference rod.
[0013] Further, it is preferred that at least one fastening member is arranged at the center of the counterweight, a first scale line is formed on the reference rod to form the first position, the fastening member arranged at the center of the counterweight is aligned with the first scale line, the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate.
[0014] Further, it is preferred that a second scale line is formed on the reference rod to form the second position. When the fastening member arranged at the center of the counterweight is aligned with the second scale line, the driving gear rotates, and at this time, the torque of the selector motor is appropriate.
[0015] Further, it is preferred that a first limiting member is arranged on the reference rod to form the first position, the outer wall of the counterweight abuts against the first limiting member, the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate.
[0016] Further, it is preferred that a second limiting member is arranged on the reference rod to form the second position, the outer wall of the counterweight abuts against the second limiting member, the driving gear rotates, and at this time, the torque of the selector motor is appropriate.
[0017] The positioning and adjusting force measuring device of the present utility model has at least the following beneficial effects:
[0018] 1. It improves the accuracy and repeatability of torque adjustment and reduces the dependence on the experience of operators.
[0019] 2. It realizes efficient torque testing and adjustment through a simple mechanical structure, improving work efficiency.
[0020] 3. It enhances the stability and safety of the RIC system in nuclear power plants and reduces potential risks caused by improper torque.
[0021] 4. The device has a simple structure, low maintenance cost, and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0023] Figure 1 It is a schematic structural diagram of the first implementation manner of the positioning and adjusting force measuring device in the present invention;
[0024] Figure 2 It is Figure 1 an exploded view of;
[0025] Figure 3 a schematic structural diagram of the second implementation manner of the positioning and adjusting force measuring device in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0027] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0028] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.
[0029] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection", "fixation", etc. shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0030] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0031] As Figures 1 - 3 shown, a positioning and adjusting force measuring device provided by the present utility model is used to adjust the torque of the selector motor for the RIC system of a nuclear power plant, and includes a reference rod 10, a support portion 20 connected to one end of the reference rod 10, and a counterweight 30 disposed on the reference rod 10; the reference rod 10 serves as the basic component of the entire device, providing stable support and reference. The support portion 20 is connected to one end of the reference rod 10 and tightly engages with the driving gear of the selector motor to ensure the accuracy of torque transmission. The counterweight 30 is movably disposed on the reference rod 10, and the torque of the motor is adjusted by changing its position.
[0032] Moreover, a first position 40 and a second position 50 are provided on the reference rod 10. When the counterweight 30 is placed at the first position 40, the torque generated by it exactly makes the driving gear remain stationary, indicating that the torque of the motor is in a suitable state. On the contrary, when the counterweight 30 is moved to the second position 50, the driving gear starts to rotate, which also indicates that the torque of the motor has been adjusted to a suitable range. The weight of the counterweight 30 and the selection of the first position 40 and the second position 50 are set according to the parameters of the motor. This design not only simplifies the torque adjustment process but also greatly improves the accuracy and repeatability of the adjustment.
[0033] In a specific implementation, first, the support part 20 needs to be correctly engaged with the driving gear of the selector motor. Then, the counterweight 30 is installed on the reference rod 10, and its position can be adjusted as needed. When it is necessary to test or adjust the torque of the motor, the counterweight 30 can be gradually moved to the first position 40 or the second position 50 on the reference rod 10. By observing the rotation of the driving gear, it can be judged whether the torque of the motor is appropriate. For example, when the counterweight 30 is moved to the second position 50 on the reference rod 10, if the driving gear rotates, the torque is considered appropriate; otherwise, a tool is used to adjust the nut to change the pre-tightening force of the spring until the driving gear rotates. When the counterweight 30 is moved to the first position 40 on the reference rod 10 and the driving gear does not rotate, the torque is considered appropriate; otherwise, a tool is used to adjust the nut to change the pre-tightening force of the spring until the driving gear does not rotate.
[0034] In a specific embodiment, an adjustment hole is radially formed on the outer wall of the support part 20, and a tightening adjustment member 60 is inserted through the adjustment hole to adjust the engagement between the support part 20 and the driving gear of the selector motor. By adjusting the inward extension amount of the tightening adjustment member 60, the engagement degree between the support part 20 and the driving gear can be more precisely controlled, so as to adapt to the driving gears of selector motors of different specifications.
[0035] In a preferred embodiment, the inner side wall of the support part 20 is a semi-circular structure, and the side wall of the semi-circular structure matches the outer wall surface of the driving gear. By setting the inner side wall of the support wall as a semi-circular structure, the tight fit between the two and the effective transmission of torque are ensured.
[0036] In a specific embodiment, a clamping groove 31 is provided on the counterweight 30, and the clamping groove 31 matches the reference rod 10. The reference rod 10 is inserted into the clamping groove 31, so that the counterweight 30 can stably move on the reference rod 10. At the same time, the counterweight 30 further includes a fastener 70, and the fastener 70 fixes and limits the reference rod 10 and the counterweight 30 to prevent accidental movement during the adjustment process. Further, preferably, the fastener 70 is provided at the edge of the clamping groove 31, and the fastener 70 is a nut. A part of the nut limits the reference rod 10, that is, a part of the nut cap is on the reference rod 10 and a part is on the counterweight 30, pressing the reference rod 10 against the clamping groove 31 of the counterweight 30 to prevent the counterweight 30 from falling off the reference rod 10.
[0037] Further, the fasteners 70 are distributed at the two side edges of the clamping groove 31, so that the fixing and limiting are more firm. For example, the fasteners 70 are distributed in a triangular shape at the two side edges of the clamping groove 31. The triangular shape increases the support points, making the connection between the reference rod 10 and the counterweight 30 more firm.
[0038] In a specific embodiment, a gasket 80 is provided between the fastener 70 and the counterweight 30 to prevent the nut from scraping the reference rod 10 and to make the connection between the reference rod 10 and the counterweight 30 more secure.
[0039] In a specific embodiment, as Figure 1 shown, at least one of the fasteners 70 is disposed at the center of the counterweight 30. A first scale line 41 is provided on the reference rod 10 to form the first position 40. The fastener 70 disposed at the center of the counterweight 30 is aligned with the first scale line 41, and the driving gear does not rotate. At this time, the torque of the selector motor is appropriate. Such a setting can determine that the counterweight 30 has moved to the target judgment position by aligning the fastener 70 at the center with the first scale line 41, which is intuitive, simple to operate, and thus ensures that each adjustment can achieve the expected effect.
[0040] In a specific embodiment, as Figure 1 shown, a second scale line 51 is provided on the reference rod 10 to form the second position 50. When the fastener 70 disposed at the center of the counterweight 30 is aligned with the second scale line 51, the driving gear rotates. At this time, the torque of the selector motor is appropriate. Such a setting can determine that the counterweight 30 has moved to the target judgment position by aligning the fastener 70 at the center with the second scale line 51, which is intuitive, simple to operate, and thus ensures that each adjustment can achieve the expected effect.
[0041] In a specific embodiment, as Figure 3 shown, a first limiting member 42 is provided on the reference rod 10 to form the first position 40. The outer wall of the counterweight 30 abuts against the first limiting member 42, and the driving gear does not rotate. At this time, the torque of the selector motor is appropriate. The first limiting member 42 can be a limiting protrusion or a limiting baffle. Such a setting can determine that the counterweight 30 has moved to the target judgment position by the outer wall of the counterweight 30 abutting against the first limiting member 42, which is intuitive, simple to operate, and thus ensures that each adjustment can achieve the expected effect.
[0042] In a specific embodiment, as Figure 3 shown, a second limiting member 52 is provided on the reference rod 10 to form the second position 50. The outer wall of the counterweight 30 abuts against the second limiting member 52, and the driving gear rotates. At this time, the torque of the selector motor is appropriate. The second limiting member 52 can be a limiting protrusion or a limiting baffle. Such a setting can determine that the counterweight 30 has moved to the target judgment position by the outer wall of the counterweight 30 abutting against the first limiting member 42, which is intuitive, simple to operate, and thus ensures that each adjustment can achieve the expected effect.
[0043] Generally speaking, the positioning and adjusting force measuring device of the present utility model realizes accurate adjustment of the torque of the selector motor of the RIC system in a nuclear power plant through ingenious structural design and fine adjustment mechanism. This not only improves the operation efficiency and safety of the nuclear power plant, but also provides a beneficial reference for the technological progress in related fields.
[0044] The positioning and adjusting force measuring device of the present utility model has at least the following beneficial effects:
[0045] 1. It improves the accuracy and repeatability of torque adjustment and reduces the dependence on the experience of operators.
[0046] 2. It realizes efficient torque testing and adjustment through a simple mechanical structure, improving work efficiency.
[0047] 3. It enhances the stability and safety of the RIC system in the nuclear power plant and reduces potential risks caused by improper torque.
[0048] 4. The device has a simple structure, low maintenance cost, and is easy to promote and apply.
[0049] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A positioning and adjusting force measuring device for adjusting the torque of a selector motor used in the RIC system of a nuclear power plant, characterized in that, It includes a reference rod, a support portion connected to one end of the reference rod, and a counterweight disposed on the reference rod; The support portion engages with the driving gear of the selector motor. There are a first position and a second position provided on the reference rod. When the counterweight is disposed at the first position, the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate; when the counterweight is disposed at the second position, the driving gear rotates, and at this time, the torque of the selector motor is appropriate.
2. The positioning and adjusting force measuring device according to claim 1, characterized in that, An adjustment hole is radially formed on the outer wall of the support portion, and a tightening adjustment member is inserted through the adjustment hole to adjust the engagement between the support portion and the driving gear of the selector motor.
3. The positioning and adjusting force measuring device according to claim 1, characterized in that, The inner side wall of the support portion is a semi-circular structure, and the side wall of the semi-circular structure matches the outer wall surface of the driving gear.
4. The positioning and adjusting force measuring device according to claim 1, wherein A clamping groove is provided on the counterweight, and the clamping groove matches the reference rod. The reference rod is inserted into the clamping groove. The counterweight further includes a fastener, and the fastener fixes and limits the reference rod and the counterweight.
5. The positioning and adjusting force measuring device according to claim 4, wherein A gasket is provided between the fastener and the counterweight.
6. The positioning and adjusting force measuring device according to claim 4, characterized in that, The fastener is disposed at the two side edges of the clamping groove. The fastener is a nut, and the top of the nut at least presses and limits the reference rod.
7. The positioning and adjusting force measuring device according to claim 4, characterized in that, At least one fastener is disposed at the center of the counterweight. A first scale line is provided on the reference rod to form the first position. When the fastener disposed at the center of the counterweight is aligned with the first scale line, the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate.
8. The positioning and adjusting force measuring device according to claim 7, wherein, A second scale line is provided on the reference rod to form the second position. When the fastener disposed at the center of the counterweight is aligned with the second scale line, the driving gear rotates, and at this time, the torque of the selector motor is appropriate.
9. The positioning and adjusting force measuring device according to claim 1, characterized in that, A first limiting member is provided on the reference rod to form the first position. The outer wall of the counterweight abuts against the first limiting member, and the driving gear does not rotate, and at this time, the torque of the selector motor is appropriate.
10. The positioning and adjusting force measuring device according to claim 9, characterized in that, A second limiting member is provided on the reference rod to form the second position. The outer wall of the counterweight abuts against the second limiting member, and the driving gear rotates, and at this time, the torque of the selector motor is appropriate.