CN215341972U - Ring chain fixing device for high-temperature gas cooled reactor control rod - Google Patents
Ring chain fixing device for high-temperature gas cooled reactor control rod Download PDFInfo
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- CN215341972U CN215341972U CN202120768747.7U CN202120768747U CN215341972U CN 215341972 U CN215341972 U CN 215341972U CN 202120768747 U CN202120768747 U CN 202120768747U CN 215341972 U CN215341972 U CN 215341972U
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- 239000004677 Nylon Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model provides a ring chain fixing device for a high-temperature gas cooled reactor control rod, and belongs to the technical field of maintenance of a control rod drive mechanism of a high-temperature gas cooled reactor. This endless chain fixing device includes: a first fixing plate; the first fixing plate is provided with a first fixing groove penetrating through the thickness of the first fixing plate; the second fixing plate is provided with a second fixing groove penetrating through the thickness of the second fixing plate, the second fixing plate can be rotatably arranged relative to the first fixing plate along the horizontal direction, and when the second fixing plate rotates to be attached to the first fixing plate, the first fixing groove is communicated with the second fixing groove so as to clamp the ring chain in the first fixing groove and the second fixing groove. According to the ring chain fixing device, the control rod ring chain can be quickly fixed in a narrow space through the two fixing plates and the fixing grooves which are oppositely arranged, and then the ring chain is sheared, so that the control rod and the ring chain are prevented from falling into a reactor core.
Description
Technical Field
The utility model belongs to the technical field of maintenance of control rod drive mechanisms of high-temperature gas cooled reactors, and particularly relates to a ring chain fixing device for control rods of a high-temperature gas cooled reactor.
Background
The high-temperature gas cooled reactor is a high-temperature reactor which takes graphite as a moderator and helium as a coolant, and is an advanced nuclear reactor with good inherent safety and high power generation efficiency. During operation of a nuclear power plant, the core of the reactor is cooled by a helium coolant.
In the reactor operation process, the control rod system is used for controlling the reactivity and realizing the operation in different modes. During long-term operation, when the control rod system drive mechanism fails, the HTR-PM control rods and their ring chain of drive mechanisms need to be disconnected in order to transfer the control rod drive mechanisms to a heat engine repair shop for repair.
However, when the HTR-PM control rods and the chain of the driving mechanism thereof are quickly separated, the control rods and the connecting chain thereof need to be reliably fixed, and then the chain needs to be cut so as to prevent the control rods and the chain from falling into the reactor core.
Therefore, a stable and reliable endless chain fixing device suitable for such an environment is required.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one technical problem in the prior art and provides a ring chain fixing device for a high-temperature gas cooled reactor control rod.
The utility model provides a ring chain fixing device for a high-temperature gas cooled reactor control rod, which comprises: a first fixing plate; the first fixing plate is provided with a first fixing groove penetrating through the thickness of the first fixing plate; the second fixing plate is provided with a second fixing groove penetrating through the thickness of the second fixing plate, the second fixing plate can be rotatably arranged relative to the first fixing plate along the horizontal direction, and when the second fixing plate rotates to be attached to the first fixing plate, the first fixing groove is communicated with the second fixing groove so as to clamp the ring chain in the first fixing groove and the second fixing groove.
Optionally, the device for fixing a loop chain further comprises a first connecting piece, one end of the first connecting piece is fixedly connected with the first end of the first fixing plate, and the other end of the first connecting piece is rotatably connected with the first end of the second fixing plate.
Optionally, the other end of the first connecting piece forms a rotatable connection with the first end of the second fixing plate through a rotating shaft.
Optionally, the endless chain fixing device further includes a second connecting member, one end of the second connecting member is fixedly connected to the second end of the second fixing plate, and the other end of the second connecting member is connected to the second end of the first fixing plate in a lockable manner.
Optionally, the device for fixing a chain further comprises a locking member, and when the chain is clamped between the first fixing groove and the second fixing groove, the other end of the second connecting member is in locking connection with the first fixing plate through the locking member.
Optionally, the locking element employs a rotary plunger.
Optionally, the first connecting piece and/or the second connecting piece adopt a connecting plate.
Optionally, a first fixing block is arranged in a middle region of the first fixing plate facing the second fixing plate, the thickness of the first fixing block is greater than that of the first fixing block, and the first fixing block is provided with a first fixing groove penetrating through the thickness of the first fixing block; and the number of the first and second groups,
the second fixing plate is provided with a second fixing block facing the middle area of the first fixing plate, the thickness of the second fixing block is larger than that of the second fixing plate, and a second fixing groove penetrating through the thickness of the second fixing block is formed in the second fixing block.
Optionally, a first positioning protection pad is further disposed on one side of the first fixing plate along the thickness of the first fixing plate, and the first positioning protection pad is wound around the first fixing block; and the number of the first and second groups,
and a second positioning protection pad is further arranged on one side of the second fixing plate along the thickness of the second fixing plate, and is wound around the second fixing block.
Optionally, the first fixing plate and/or the second fixing plate are in a semicircular structure.
The utility model provides a ring chain fixing device for a high-temperature gas cooled reactor control rod, which comprises: a first fixing plate; the first fixing plate is provided with a first fixing groove penetrating through the thickness of the first fixing plate; the second fixing plate is provided with a second fixing groove penetrating through the thickness of the second fixing plate, the second fixing plate can be rotatably arranged relative to the first fixing plate along the horizontal direction, and when the second fixing plate rotates to be attached to the first fixing plate, the first fixing groove is communicated with the second fixing groove so as to clamp the ring chain in the first fixing groove and the second fixing groove. According to the ring chain fixing device, the control rod ring chain can be quickly fixed in a narrow space through the two fixing plates and the fixing grooves which are oppositely arranged, and then the ring chain is sheared, so that the control rod and the ring chain are prevented from falling into a reactor core.
Drawings
FIG. 1 is a cross-sectional view of a ring chain fixing device for a high temperature gas cooled reactor control rod according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a ring chain fixing device for a high temperature gas cooled reactor control rod according to another embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.
Unless otherwise specifically stated, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this invention belongs. The use of "including" or "comprising" and the like in this disclosure does not limit the presence or addition of any number, step, action, operation, component, element, and/or group thereof or does not preclude the presence or addition of one or more other different numbers, steps, actions, operations, components, elements, and/or groups thereof. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number and order of the indicated features.
In some descriptions of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," or "fixed" and the like are not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect through an intermediate medium, communication between two elements, or interaction between two elements. Also, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate an orientation or positional relationship based on that shown in the drawings, and are used only to indicate a relative positional relationship, which may also be changed accordingly when the absolute position of the object being described is changed.
As shown in fig. 1 and 2, the present invention provides a ring chain fixing device 100 for a high temperature gas cooled reactor control rod, comprising: a first fixing plate 110 and a second fixing plate 120. The first fixing plate 110 is provided with a first fixing groove 111 penetrating the thickness thereof. The second fixing plate 120 is provided with a second fixing groove 121 penetrating through the thickness thereof, the second fixing plate 120 is rotatably disposed along the horizontal direction with respect to the first fixing plate 110, and when the second fixing plate 120 rotates to be attached to the first fixing plate 110, the first fixing groove 111 and the second fixing groove 121 are communicated with each other, so that the link chain 200 is clamped in the first fixing groove 111 and the second fixing groove 121.
The first fixed plate and the second fixed plate that this embodiment set up through two relatively, and the second fixed plate can be rotatory along the horizontal direction for first fixed plate, can open and close for first fixed plate promptly to fix the ring chain in first fixed slot and second fixed slot, can realize fixing control rod ring chain fast in narrow and small space, then carry out the ring chain and cut, in order to avoid control rod and ring chain to fall into the reactor core.
In addition, in the present embodiment, the connection manner between the first fixing plate and the second fixing plate is not particularly limited, as long as the second fixing plate can be rotatably opened and closed with respect to the first fixing plate. It will be understood that one end of the two should be rotatably connected and the other end can be opened and closed, so that the second fixing plate can be opened or closed relative to the first fixing plate by rotating one end.
Specifically, as shown in fig. 1 and 2, in some embodiments, the endless chain fixing device 100 further includes a first connecting member 130, one end of the first connecting member 130 is fixedly connected to the first end of the first fixing plate 110, and the other end of the first connecting member 130 is rotatably connected to the first end of the second fixing plate 120.
Further, as shown in fig. 1 and 2, the other end of the first connecting element 130 of the present example is rotatably connected to the first end of the second fixing plate 120 via a rotating shaft 140, so as to realize the rotating opening and closing of the second fixing plate. Of course, one end of the first connecting member may be fixedly connected to the first end of the first fixing plate by a pin or other means.
Further, as shown in fig. 1 and 2, in other embodiments, the endless chain fixing device 100 further includes a second connecting member 150, one end of the second connecting member 150 is fixedly connected to the second end of the second fixing plate 120, and the other end of the second connecting member 150 is lockably connected to the second end of the first fixing plate 110.
It is understood that one end of the second connecting member in this example may also be fixedly connected to the second end of the second fixing plate by using a pin or the like, and the other end of the second connecting member is locked to the second end of the first fixing plate by using a locking member, and the type of the locking member is not particularly limited, for example, the locking member is a rotary plunger or the like, as long as the locking of the first fixing plate to the second fixing plate is achieved.
Specifically, as shown in fig. 1 and 2, the link chain fixing device 100 further includes a rotating plunger locking member 160, and when the link chain 200 is clamped in the first fixing groove 111 and the second fixing groove 121, the other end of the second connecting member 150 is locked to the first fixing plate 110 by the rotating plunger locking member 160, so that the first fixing plate and the second fixing plate are locked.
It should be noted that the first connecting member and the second connecting member of the present embodiment may be connecting plates.
Further, in other embodiments, as shown in fig. 1 and 2, the first fixing block 112 is disposed on the first fixing plate 110 toward the middle region of the second fixing plate 120, the thickness of the first fixing block 112 is greater than that of the first fixing plate 110, and the first fixing block 112 is provided with a first fixing groove 111 penetrating the thickness thereof. And a second fixing block 122 is disposed on the second fixing plate 120 toward a middle region of the first fixing plate 110, a thickness of the second fixing block 122 is greater than that of the second fixing plate 120, and a second fixing groove 121 penetrating the thickness of the second fixing block 122 is disposed on the second fixing block 122. That is to say, in order to increase the contact area between the chain and the fixing groove, a fixing block with a larger thickness may be disposed in the central region of each fixing plate, and the fixing groove is disposed in the fixing block, so that the chain is clamped in the fixing groove, thereby not only fixing the chain in the fixing groove, but also reducing the thickness of the whole device, and facilitating the operation.
In order to engage the link chain with each of the fixing grooves, the fixing grooves may be formed in a link chain shape.
It should be further noted that the first fixing plate and the second fixing plate of the present embodiment are in a semicircular structure, which is equivalent to a male head and a female head, so that when the two fixing plates are folded to form a circle, the ring chain is locked and placed at the nozzle position of the control rod driving mechanism to form a complete cover plate-shaped device, and at the same time, foreign objects can be prevented from falling into the core.
Furthermore, in order to position and seal the nozzle, as shown in fig. 1, a first positioning protection pad (not shown) is further disposed on one side of the first fixing plate along the thickness thereof, and the first positioning protection pad is wound around the first fixing block. And a second positioning protection pad 123 is further disposed on one side of the second fixing plate 120 along the thickness thereof, the second positioning protection pad 123 is wound around the second fixing block 122, and the second positioning protection pad can be fixed on the second fixing plate by a countersunk screw 170. That is, a ring of positioning protection pads is provided on the side of each fixed plate facing away from the connecting member, i.e., the bottom of each fixed plate, by which the crdm nozzle is ensured to be concentric with the endless chain fixture of this example, and functions to position and protect the nozzle sealing surface.
It should be noted that the present embodiment is not limited to the type of the positioning protection pad, and for example, a nylon cushion block may be used.
Based on the above structure, and with reference to fig. 1 and fig. 2, the specific usage of the endless chain fixing device of the present embodiment is as follows: the second fixing plate 120 (male) is connected to the first fixing plate 110 (female) by a first connecting member 130, one end of the first connecting member 130 is fixed to the first fixing plate 110 (female) by a pin, and the other end of the first connecting member 130 is connected to the second fixing plate 120 (male) by a rotating shaft 140 to realize the rotation of the male, and the ring chain is clamped in a first fixing groove and a second fixing groove between the first fixing plate and the second fixing plate. The crdm is lifted to a proper height, the second fixing plate 120 (male) and the first fixing plate 110 (female) are fastened to a link chain 200 above the nozzle, and the second connector 150 is locked by the rotating plunger locking member 160, so that the second fixing plate 120 (male) and the first fixing plate 110 (female) are locked. And the lifting height of the driving mechanism is finely adjusted, so that the whole set of ring chain fixing tool falls on the nozzle of the control rod driving mechanism and is ensured to be concentric through the nylon cushion block, and the subsequent chain shearing work can be performed after the installation is finished.
The utility model provides a ring chain fixing device for a high-temperature gas cooled reactor control rod, which has the following beneficial effects compared with the prior art: through two fixed plates and fixed slots that set up relatively, can realize fixing control rod chain link fast in narrow and small space, the small and exquisite compactness of structure hangs control rod and chain weight reliably on top cap actuating mechanism mouthpiece, then carries out the chain link and cuts to control rod and chain link fall into in the reactor core. Secondly, the whole ring chain fixing device is of a circular structure, so that the nozzle of the top cover driving mechanism can be completely covered, and foreign matters are prevented from entering a reactor core during shearing. In addition, the bottom parts of the first fixing plate and the second fixing plate are provided with positioning protection pads, and the positioning protection pads can play a role in positioning and protecting the sealing surface of the nozzle after being folded and placed at the position of the nozzle.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the utility model, and these modifications and improvements are also considered to be within the scope of the utility model.
Claims (10)
1. A ring chain fixing device for a high temperature gas cooled reactor control rod is characterized by comprising:
a first fixing plate; the first fixing plate is provided with a first fixing groove penetrating through the thickness of the first fixing plate;
the second fixing plate is provided with a second fixing groove penetrating through the thickness of the second fixing plate, the second fixing plate can be rotatably arranged relative to the first fixing plate along the horizontal direction, and when the second fixing plate rotates to be attached to the first fixing plate, the first fixing groove is communicated with the second fixing groove so as to clamp the ring chain in the first fixing groove and the second fixing groove.
2. The apparatus according to claim 1, further comprising a first connecting member having one end fixedly connected to the first end of the first fixing plate and another end rotatably connected to the first end of the second fixing plate.
3. The apparatus according to claim 2, wherein the other end of the first connecting member is rotatably connected to the first end of the second fixing plate through a rotating shaft.
4. The endless chain fixing device of claim 3, further comprising a second connecting member, one end of said second connecting member being fixedly connected to a second end of said second fixing plate, the other end of said second connecting member being lockably connected to a second end of said first fixing plate.
5. The apparatus according to claim 4, further comprising a locking member, wherein when the link chain is caught in the first and second fixing grooves, the other end of the second link member is brought into locking connection with the first fixing plate by the locking member.
6. The endless chain fixing device of claim 5, wherein said locking element employs a rotating plunger.
7. The link chain fixing device according to claim 5, wherein the first connecting member and/or the second connecting member employ a connecting plate.
8. The endless chain fixing device according to any one of claims 1 to 7, wherein a first fixing block is provided to the first fixing plate toward a middle region of the second fixing plate, the first fixing block having a thickness greater than that of the first fixing plate, and the first fixing block is provided with the first fixing groove penetrating the thickness thereof; and the number of the first and second groups,
the second fixing plate is provided with a second fixing block facing the middle area of the first fixing plate, the thickness of the second fixing block is larger than that of the second fixing plate, and a second fixing groove penetrating through the thickness of the second fixing block is formed in the second fixing block.
9. The device for fixing a link chain according to claim 8, wherein a first positioning protection pad is further disposed on one side of the first fixing plate along the thickness thereof, and the first positioning protection pad is wound around the first fixing block; and the number of the first and second groups,
and a second positioning protection pad is further arranged on one side of the second fixing plate along the thickness of the second fixing plate, and is wound around the second fixing block.
10. The endless chain fixing device according to any one of claims 1 to 7, wherein the first fixing plate and/or the second fixing plate is in a semicircular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768747.7U CN215341972U (en) | 2021-04-15 | 2021-04-15 | Ring chain fixing device for high-temperature gas cooled reactor control rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120768747.7U CN215341972U (en) | 2021-04-15 | 2021-04-15 | Ring chain fixing device for high-temperature gas cooled reactor control rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215341972U true CN215341972U (en) | 2021-12-28 |
Family
ID=79594062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120768747.7U Active CN215341972U (en) | 2021-04-15 | 2021-04-15 | Ring chain fixing device for high-temperature gas cooled reactor control rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215341972U (en) |
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2021
- 2021-04-15 CN CN202120768747.7U patent/CN215341972U/en active Active
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