Multi-degree-of-freedom control rod drive rod simulation device

Abstract

The utility model discloses a multi-degree-of-freedom control rod drive rod simulation device, which is used for being connected with a control rod unconnecting buckle tool and comprises a plurality of supporting legs used for adjusting levelness. The horizontal position adjusting unit is connected with each supporting leg, the height adjusting unit is connected with the horizontal position adjusting unit, and the control rod drive rod simulation unit is connected with the height adjusting unit; the control rod drive rod simulation unit comprises an annular rod and a core rod which are used for being connected with two clamps of the control rod connection and disconnection buckle tool respectively, and the annular rod is connected to the periphery of the core rod in a sleeving mode. The annular rod and the core rod are respectively connected with the two clamps of the control rod connecting and disconnecting tool, and can be used for testing the functions of the two cylinders of the control rod connecting and disconnecting tool. The levelness, the horizontal position and the height position of the control rod drive rod simulation unit can be adjusted through the supporting legs, the horizontal position adjusting unit and the height adjusting unit respectively, the work of building a scaffold is omitted, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unlocking and separating a control rod driving rod and a control rod assembly, in particular to a multi-degree-of-freedom control rod driving rod simulation device. Background Art

[0002] There are 89 control rod assemblies in the reactor of a nuclear power plant. The control rod assemblies are connected to the control rod drive rods. The relative movement between the control rod drive rods and the control rod assemblies is controlled by the CRDM (control rod drive mechanism), thereby controlling the core reactivity, achieving the control rod assembly to reach the target height or power off and drop the rods, and completing the functions of reactor startup, power regulation, power maintenance, safe shutdown and accident shutdown. During the reactor refueling overhaul, the upper components need to be hoisted out. Before hoisting out the upper components, the control rod drive rods must be separated from the control rod assemblies to prevent the control rod assemblies from being taken out together when hoisting out the upper components. After the loading is completed and the upper components are hoisted back, the control rod drive rods need to be reconnected to the control rod assembly to restore the relevant reactor regulation and control functions of the control rod assembly.

[0003] The control rod disconnection tool is a tool used to connect the control rod drive rods and realize the connection and separation between the control rod drive rods and the control rod assembly. In order to ensure the availability of the control rod disconnection tool, the control rod disconnection tool needs to be functionally tested before each overhaul. The control rod drive rod dummy body is required for the functional test to simulate the connection between the control rod drive rod and the disconnection tool. The disconnection tool can only be put into use after ensuring that the function is normal. During the functional test on site, the control rod disconnection tool is fixedly mounted on the evaporator wall (located at +35.985 meters of the nuclear island). The height difference between the ground where the control rod drive rod dummy body can be placed and the control rod disconnection tool is large. Therefore, it is usually necessary to first build a scaffolding about 4.9 meters high under the control rod disconnection tool, and then place the control rod drive rod dummy body on the scaffolding so that the control rod drive rod dummy body and the control rod disconnection tool can be connected. However, during field tests, there are still height deviations and level deviations between the control rod drive rod simulation body on the scaffolding and the control rod disconnecting tool, which often leads to connection jams between the two. At this time, it is often necessary to readjust the height and level of the scaffolding, resulting in low work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an improved control rod driving rod simulation device to improve the working efficiency of the control rod disconnecting tool function test.

[0005] The utility model solves the technical problem by adopting the following technical solution: providing a multi-degree-of-freedom control rod driving rod simulation device for connecting a control rod decoupling tool, comprising a plurality of legs for adjusting horizontality, a horizontal position adjustment unit connected to each of the legs, a height adjustment unit connected to the horizontal position adjustment unit, and a control rod driving rod simulation unit connected to the height adjustment unit; the control rod driving rod simulation unit comprises an annular rod and a core rod of two clamps respectively used for connecting the control rod decoupling tool, and the annular rod is sleeved on the outer periphery of the core rod.

[0006] Preferably, the control rod driving rod simulation unit further comprises a bracket, an elastic member, and a supporting member;

[0007] The bracket is connected between the height adjustment unit and the annular rod, and encloses an accommodating space;

[0008] The support member and the elastic member are arranged in the accommodating space;

[0009] The core rod sequentially passes through the interior of the annular rod and the rear portion of the bracket, extends into the accommodating space, and is connected to the support member;

[0010] The elastic member is connected between the supporting member and the bracket.

[0011] Preferably, the support member divides the accommodating space into a first area and a second area, the first area being closer to an end of the core rod away from the support member than the second area; and the elastic member is located in the first area.

[0012] Preferably, the multi-degree-of-freedom control rod drive rod simulation device further comprises a coaxiality adjustment member connected between the horizontal position adjustment unit and the height adjustment unit, wherein the coaxiality adjustment member has an arc surface in sliding contact with the horizontal position adjustment unit.

[0013] Preferably, the coaxiality adjustment member is hemispherical; the height adjustment unit comprises a telescopic hydraulic cylinder connected between the coaxiality adjustment member and the control rod drive rod simulation unit;

[0014] The center of the coaxiality adjusting member is collinear with the central axis of the telescopic hydraulic cylinder.

[0015] Preferably, the multi-degree-of-freedom control rod drive rod simulation device also includes at least four fixing components for fixing the position of the coaxiality adjustment member; each of the fixing components includes a base arranged on the horizontal position adjustment unit, and an abutment member that can be movably penetrated through the base and can abut against the coaxiality adjustment member.

[0016] Preferably, the horizontal position adjustment unit comprises a first support, a second support and a third support connected in sequence;

[0017] The first support is connected to each of the legs, and the height adjustment unit is connected to the third support;

[0018] The second support is slidably matched with the first support; the third support is slidably matched with the second support;

[0019] The relative sliding direction between the first support and the second support is perpendicular to the relative sliding direction between the second support and the third support.

[0020] Preferably, the horizontal position adjustment unit further comprises a first guide rail and a second guide rail;

[0021] The first guide rail is connected between the first support and the second support, and the second support is slidably matched with the first guide rail;

[0022] The second guide rail is connected between the second support and the third support, and the third support is slidably matched with the second guide rail.

[0023] Preferably, a limiting piece is provided at the end of the first guide rail and / or the second guide rail.

[0024] Preferably, the horizontal position adjustment unit is provided with a through hole penetrating two opposite surfaces thereof, and the height adjustment unit comprises a telescopic hydraulic cylinder; the telescopic hydraulic cylinder partially passes through the through hole;

[0025] And / or, the supporting leg includes a first base and a second base, the first base is supported on the ground, the second base is connected to the horizontal position adjustment unit, and the first base and the second base can move relative to each other along the length direction.

[0026] The utility model has at least the following beneficial effects: the control rod drive rod simulation device of the utility model, on the one hand, connects the two clamps of the control rod decoupling tool respectively through the annular rod and the core rod, and can be used to test the functions of the two cylinders of the control rod decoupling tool, thereby completing the functional test of the control rod decoupling tool; on the other hand, the horizontality, horizontal position and height position of the control rod drive rod simulation unit can be adjusted respectively through various legs, horizontal position adjustment units and height adjustment units, so that the control rod drive rod simulation unit has the characteristics of multiple degrees of freedom, eliminates the relative position error between the control rod drive rod simulation unit and the control rod decoupling tool, avoids the connection jamming between the two, saves the work of building scaffolding, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments, in which:

[0028] Figure 1 It is a schematic diagram of the on-site position during the function test of the existing control rod disconnection tool;

[0029] Figure 2 It is a structural schematic diagram of a multi-degree-of-freedom control rod driving rod simulation device according to an embodiment of the utility model;

[0030] Figure 3 yes Figure 2 A vertical cross-sectional view of a multi-degree-of-freedom control rod drive rod simulator;

[0031] Figure 4 yes Figure 2 A schematic diagram of partial structural decomposition of a multi-degree-of-freedom control rod drive rod simulation device is shown. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0033] Please refer to Figure 1 During the on-site functional test, the control rod disconnection tool 1 is fixedly mounted on the evaporator wall (located at the nuclear island elevation of +35.985 meters). The control rod disconnection tool 1 is about 11.028 meters long, and the fixture assembly is located at the nuclear island elevation of +24.957 meters. Because the control rod disconnection tool 1 is relatively long, the height difference between the ground where the control rod drive rod simulation body 12 can be placed and the control rod disconnection tool 1 is relatively large. Therefore, it is usually necessary to first set up a scaffolding 11 about 4.9 meters high under the control rod disconnection tool 1, and then place the control rod drive rod simulation body 12 on the scaffolding 11, so that the control rod drive rod simulation body 12 and the control rod disconnection tool 1 can be connected. For example Figure 1 In one case shown, the overall fixed height of the control rod driving rod dummy 12 is 0.805 m. However, during the field test, there is still a certain height deviation and level deviation between the control rod driving rod dummy 12 on the scaffolding 11 and the control rod disconnecting tool 1, resulting in frequent connection jams between the two. At this time, the height and level of the scaffolding 11 often need to be readjusted, which results in low work efficiency.

[0034] like Figure 2As shown, a multi-degree-of-freedom control rod driving rod simulation device (hereinafter referred to as the control rod driving rod simulation device) of an embodiment of the utility model is used to connect a control rod decoupling tool 1, which includes a plurality of legs 2, a horizontal position adjustment unit 3 connected to each leg 2, a height adjustment unit 4 connected to the horizontal position adjustment unit 3, and a control rod driving rod simulation unit 5 connected to the height adjustment unit 4. Among them, each leg 2 is used to adjust the horizontality of the control rod driving rod simulation unit 5. The horizontal position adjustment unit 3 is used to adjust the horizontal position of the control rod driving rod simulation unit 5. The height adjustment unit 4 is used to adjust the height of the control rod driving rod simulation unit 5. The control rod driving rod simulation unit 5 is used to connect the control rod decoupling tool 1. The control rod driving rod simulation unit 5 includes an annular rod 54 and a core rod 53, the annular rod 54 is sleeved on the outer circumference of the core rod 53, and the annular rod 54 and the core rod 53 are respectively used to connect two clamps (not shown) of the control rod decoupling tool 1.

[0035] When the horizontality of the leg 2 is adjusted, the horizontal position adjustment unit 3, the height adjustment unit 4 and the control rod driving rod simulation unit 5 on the leg 2 change their horizontality together, thereby changing the horizontality of the control rod driving rod simulation unit 5, so that the central axis of the core rod 53 (annular rod 54) is parallel to the central axis of the control rod disconnection tool 1; operating the horizontal position adjustment unit 3 can change the horizontal position of the height adjustment unit 4 and the control rod driving rod simulation unit 5 thereon, thereby changing the horizontal position of the control rod driving rod simulation unit 5; operating the height adjustment unit 4 can change the height position of the control rod driving rod simulation unit 5. Therefore, the various units are integrated into one, so that the multi-degree-of-freedom control rod driving rod simulation device of the utility model has high integration, small occupied volume, and can be applied to some narrow space environments in nuclear power plants. The control rod driving rod simulation device of the utility model can at least adjust the horizontality, height and horizontal position of the control rod driving rod simulation unit 5, and successfully complete the docking between the control rod driving rod simulation unit 5 and the control rod disconnection tool 1.

[0036] Specifically, the control rod disconnection tool 1 has two cylinders (not shown) that control the reciprocating motion of the two clamps respectively. A circle of grooves is respectively provided on the outer circumference of the annular rod 54 and the core rod 53. During the functional test, the driving force of the two cylinders of the control rod disconnection tool 1 can be tested by the annular rod 54 and the core rod 53 respectively. When performing a functional test on one of the cylinders, after one of the clamps of the control rod disconnection tool 1 is engaged with the groove on the annular rod 54, the cylinder of the control rod disconnection tool 1 is started to drive the annular rod 54 to reciprocate relative to the core rod 53, simulating the process of the annular rod 54 rising when the control rod disconnection tool 1 is connected to the annular rod 54. When the rising height, rising speed, etc. of the annular rod 54 meet the standards, it is considered that the performance of the cylinder meets the standards. Similarly, when the function test is carried out on another cylinder, after another clamp of the control rod uncoupling tool 1 is engaged with the groove on the core rod 53, another cylinder of the control rod uncoupling tool 1 is started to drive the core rod 53 to reciprocate relative to the annular rod 54, simulating the process of the core rod 53 rising when the control rod uncoupling tool 1 is connected to the core rod 53. When the rising height and rising speed of the core rod 53 meet the standards, it is considered that the performance of the other cylinder meets the standards.

[0037] In summary, the control rod driving rod simulation device of the utility model, on the one hand, connects the two clamps of the control rod disconnecting tool 1 respectively through the annular rod 54 and the core rod 53, and can be used to test the functions of the two cylinders of the control rod disconnecting tool 1, thereby completing the functional test of the control rod disconnecting tool 1; on the other hand, the horizontality, horizontal position and height position of the control rod driving rod simulation unit 5 can be adjusted respectively through each support leg 2, the horizontal position adjustment unit 3 and the height adjustment unit 4, so that the control rod driving rod simulation unit 5 has the characteristics of multiple degrees of freedom, eliminates the relative position error between the control rod driving rod simulation unit 5 and the control rod disconnecting tool 1, avoids the connection jam between the two, saves the work of building a scaffolding 11, and improves work efficiency.

[0038] like Figure 2In the illustrated embodiment, the control rod drive rod simulation unit 5 further includes a bracket 50, an elastic member 51 and a support member 52. The bracket 50 is connected between the height adjustment unit 4 and the annular rod 54, and encloses a receiving space 63. The support member 52 and the elastic member 51 are arranged in the receiving space 63. The core rod 53 sequentially passes through the inside of the annular rod 54 and the rear part of the bracket 50 to extend into the receiving space 63, and is connected to the support member 52. The support member 52 is connected to the bracket 50. The elastic member 51 is connected between the support member 52 and the bracket 50. In this embodiment, the bracket 50 includes two bottom plates 501 and two vertical plates 502, and the two vertical plates 502 are arranged in parallel and are respectively connected between the two bottom plates 501. The two bottom plates 501 and the two vertical plates 502 together enclose a semi-open receiving space 63 that is roughly square, but the specific structure of the bracket 50 is not limited thereto, and the bracket 50 can also enclose a completely enclosed receiving space 63.

[0039] by Figure 2 Taking the position shown as an example, when one of the cylinders of the control rod decoupling tool 1 is started, the annular rod 54 moves upward as the active part, and the bracket 50 is also driven to move upward. At this time, relative displacement occurs between the bracket 50 and the support member 52, and the elastic member 51 is stretched and deformed accordingly. At this time, it can be determined that when the deformation of the elastic member 51 reaches the preset value, or when the relative displacement between the bracket 50 and the support member 52 reaches the preset value, the functional test of the corresponding cylinder meets the standard. Similarly, when another cylinder of the control rod decoupling tool 1 is started, the core rod 53 moves upward, and the core rod 53 drives the support member 52 to move upward. At this time, relative displacement also occurs between the bracket 50 and the support member 52, but the active part is the core rod 53. The elastic member 51 is compressed and deformed accordingly. At this time, it can be determined that when the deformation of the elastic member 51 reaches the preset value, or when the relative displacement between the bracket 50 and the support member 52 reaches the preset value, the functional test of the corresponding cylinder meets the standard. For example, when the relative displacement between the bracket 50 and the support member 52 reaches 40 cm (equivalent to the core rod 53 rising 40 cm), it can be determined that the corresponding cylinder performance of the control rod disconnection tool 1 meets the standard. Because the real control rod drive rod and the control rod assembly are several meters long, the relative movement stroke of the two when they are pulled out is large. The role of the elastic member 51 is to provide a resistance for the lifting of the core rod 53 and the annular rod 54 through its own deformation, thereby compressing the relative movement stroke between the control rod drive rod and the control rod assembly, so that the control rod drive rod simulation device can also simulate the connection and separation between the control rod drive rod and the control rod assembly with a small volume. In addition, the lifting displacement of the core rod 53 or the annular rod 54 can be conveniently quantified through the compression amount of the elastic member 51 or the relative displacement between the bracket 50 and the support member 52, thereby more intuitively verifying the usability of the control rod disconnection tool 1.

[0040] For example Figure 2In the illustrated embodiment, the support member 52 divides the accommodating space 63 into a first area 631 and a second area 632. The first area 631 is closer to the end of the core rod 53 away from the support member 52 than the second area 632. The elastic member 51 is located in the first area 631. Specifically, the elastic member 51 can be a spring, which surrounds the outer periphery of the core rod 53. In this embodiment, when the core rod 53 moves upward, the elastic member 51 is compressed; when the annular rod 54 moves upward, the elastic member 51 is stretched. In other embodiments, the elastic member 51 can also be located in the second area 632. The movement at this time is the same as Figure 2 The illustrated embodiment is the opposite: when the core rod 53 moves upward, the elastic member 51 is stretched; when the annular rod 54 moves upward, the elastic member 51 is compressed.

[0041] like Figure 2 and Figure 3 In the illustrated embodiment, the height adjustment unit 4 includes a telescopic hydraulic cylinder. Preferably, the central axis of the telescopic hydraulic cylinder is colinear with the central axis of the core rod 53 and the central axis of the annular rod 54. The multi-degree-of-freedom control rod driving rod simulation device also includes a coaxiality adjustment member 62 connected between the horizontal position adjustment unit 3 and the height adjustment unit 4. The coaxiality adjustment member 62 has an arc surface that is in sliding contact with the horizontal position adjustment unit 3. The coaxiality adjustment member 62 can slide with the horizontal position adjustment unit 3 along the shape of the arc surface through the arc surface, thereby changing the position of the central axis of the telescopic hydraulic cylinder, so that the inclination of the control rod driving rod simulation unit 5 changes. Specifically, during the docking process with the control rod decoupling tool 1, if the coaxiality tolerance between the control rod decoupling tool 1 and the core rod 53 (or the annular rod 54) is relatively large, the central axis of the control rod decoupling tool 1 is made collinear with the central axis of the core rod 53 (or the annular rod 54) by changing the inclination of the core rod 53 (or the annular rod 54) (in this process, relative sliding occurs between the coaxiality adjusting member 62 and the horizontal position adjusting unit 3), thereby completing the docking between the control rod decoupling tool 1 and the core rod 53 (or the annular rod 54).

[0042] like Figure 3 and Figure 4 In the embodiment shown, the coaxiality adjusting member 62 is hemispherical, and its spherical surface serves as the arc surface. The center of the coaxiality adjusting member 62 is colinear with the central axis of the telescopic hydraulic cylinder. In other embodiments, the coaxiality adjusting member 62 may also be in other shapes.

[0043] like Figures 2 to 4In the embodiment shown, the control rod driving rod simulation device of the utility model further includes four fixing components 7 for fixing the position of the coaxiality adjustment member 62. In other embodiments, the number of the fixing components 7 may be more than four. Each fixing component 7 includes a base 71 disposed on the horizontal position adjustment unit 3, and an abutment member 72 movably disposed on the base 71 and capable of abutting against the coaxiality adjustment member 62. Figures 2 to 4 In the illustrated embodiment, the abutment 72 is a bolt. Specifically, when the core rod 53 (or the annular rod 54) is not docked with the control rod disconnecting tool 1, the abutment 72 may not contact the coaxiality adjustment member 62 first, and the core rod 53 (or the annular rod 54) has a certain inclination adjustment space, so that it can adjust the coaxiality tolerance between itself and the control rod disconnecting tool 1 by changing the inclination. When the coaxiality tolerance between the core rod 53 (or the annular rod 54) and the control rod disconnecting tool 1 is approximately zero (macroscopically manifested as the core rod 53 or the annular rod 54 being able to smoothly engage and connect with the control rod disconnecting tool 1), it means that the inclination of the core rod 53 (or the annular rod 54) has reached a suitable value. At this time, the abutment 72 is moved again to abut against the coaxiality adjustment member 62, thereby fixing the position of the coaxiality adjustment member 62 there, and limiting the sliding between the coaxiality adjustment member 62 and the horizontal position adjustment unit 3. Figure 2 and Figure 4 As shown, four fixing components 7 are symmetrically and evenly distributed on the horizontal position adjustment unit 3, and respectively fix four points of the coaxiality adjustment member 62 along the cross direction, so as to position the core rod 53 (or the annular rod 54) at a suitable inclination.

[0044] like Figures 2 to 4 In the illustrated embodiment, the horizontal position adjustment unit 3 includes a first support 31, a second support 32 and a third support 33 connected in sequence. The first support 31 is connected to each of the legs 2, and the height adjustment unit 4 is connected to the third support 33. The second support 32 is slidably fitted to the first support 31. The third support 33 is slidably fitted to the second support 32. The relative sliding direction y between the first support 31 and the second support 32 is perpendicular to the relative sliding direction x between the second support 32 and the third support 33, and the relative sliding direction y between the first support 31 and the second support 32 (the relative sliding direction x between the second support 32 and the third support 33) is perpendicular to the central axis of the core rod 53 or the annular rod 54. As a result, the uppermost core rod 53 or the annular rod 54 of the device has two degrees of freedom in the horizontal direction and can move in two mutually perpendicular directions (refer to Figure 2 x and y directions).

[0045] Furthermore, if Figure 2In the illustrated embodiment, the horizontal position adjustment unit 3 further includes a first guide rail 34 and a second guide rail 35. The first guide rail 34 extends along the y direction, and the second guide rail 35 extends along the x direction. The first guide rail 34 is connected between the first support 31 and the second support 32, and the second support 32 is slidably matched with the first guide rail 34. When the second support 32 moves along the first guide rail 34, the uppermost core rod 53 (or annular rod 54) also moves along the y direction. The second guide rail 35 is connected between the second support 32 and the third support 33, and the third support 33 is slidably matched with the second guide rail 35. When the third support 33 moves along the second guide rail 35, the uppermost core rod 53 (or annular rod 54) also moves along the x direction.

[0046] Specifically, Figure 2 In the illustrated embodiment, the second support 32 is provided with a first slot, through which the second support 32 is engaged with the first guide rail 34 ; the third support 33 is provided with a second slot, through which the third support 33 is engaged with the second guide rail 35 .

[0047] Furthermore, a stopper (not shown) is provided at the end of the first guide rail 34 and / or the second guide rail 35. When the second support 32 moves to the end of the first guide rail 34, the second support 32 abuts against the stopper to stop the movement, thereby preventing the second support 32 from falling out of the first guide rail 34. Similarly, when the third support 33 moves to the end of the second guide rail 35, the third support 33 abuts against the stopper to stop the movement, thereby preventing the third support 33 from falling out of the second guide rail 35. For example, the stopper may be a stopper provided at the end of the first guide rail 34 and / or the second guide rail 35.

[0048] like Figures 2 to 4 In the illustrated embodiment, the horizontal position adjustment unit 3 is provided with a through hole 80 penetrating two opposite surfaces thereof. The telescopic hydraulic cylinder part passes through the through hole 80, which is respectively connected to the horizontal position adjustment unit 3 and the control rod driving rod simulation unit 5. The coaxiality adjustment member 62 is also provided with a through hole for the telescopic hydraulic cylinder to pass through. Thus, the lower half of the telescopic hydraulic cylinder can be arranged between the legs 2, reducing the height of the height adjustment unit 4, thereby reducing the overall volume of the device.

[0049] In some embodiments, each leg 2 may include a first base 21 and a second base 22 that are movably connected. The first base 21 is supported on the ground 81, which is a placement surface for placing the entire device, and the placement surface may be a horizontal surface. The second base 22 is connected to the horizontal position adjustment unit 3. The first base 21 and the second base 22 can move relative to each other along the length direction, thereby changing the height of each leg 2. For example, the first base 21 and the second base 22 may be threadedly connected. For example, Figure 2In the illustrated embodiment, the first base 21 includes a first support column 211 and a first nut 212, and the second base 22 includes a second support column 221 and a second nut 222. The first support column 211 is supported on the ground 81, and the second nut 222 is threadedly connected to the first support column 211. The second support column 221 is connected to the horizontal position adjustment unit 3 and the second nut 222, respectively. The second nut 222 is threadedly connected to the first support column 211. The length of the first support column 211 is greater than the length of the second nut 222. By screwing the second nut 222, the position of the second nut 222 on the first support column 211 can be changed, thereby changing the height of the first support column 211. The first nut 212 can be used to limit the maximum displacement of the second base 22. The four legs 2 are symmetrically and evenly distributed below the horizontal position adjustment unit 3, corresponding to the heights of the four diagonal positions of the horizontal position adjustment unit 3, respectively. By adjusting the height of each leg 2, the horizontality of all components above the leg 2 can be changed, thereby completing the horizontality adjustment of the core rod 53 (annular rod 54). Furthermore, in order to better observe the horizontality of the core rod 53 (annular rod 54 ) in real time, a level (not shown) may be installed on the first support 31 , the second support 32 , or the third support 33 .

[0050] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A multi-degree-of-freedom control rod driving rod simulation device, used for connecting a control rod disconnection tool (1), characterized in that: The invention comprises a plurality of legs (2) for adjusting horizontality, a horizontal position adjustment unit (3) connected to each of the legs (2), a height adjustment unit (4) connected to the horizontal position adjustment unit (3), and a control rod drive rod simulation unit (5) connected to the height adjustment unit (4); the control rod drive rod simulation unit (5) comprises an annular rod (54) and a core rod (53) for connecting two clamps of the control rod disconnecting tool (1), respectively; the annular rod (54) is sleeved on the outer periphery of the core rod (53).

2. The multi-degree-of-freedom control rod driving rod simulation device according to claim 1, characterized in that: The control rod driving rod simulation unit (5) further comprises a bracket (50), an elastic member (51), and a support member (52); The bracket (50) is connected between the height adjustment unit (4) and the annular rod (54), and encloses a containing space (63); The support member (52) and the elastic member (51) are arranged in the accommodating space (63); The core rod (53) sequentially passes through the interior of the annular rod (54) and the rear portion of the bracket (50), extends into the accommodating space (63), and is connected to the support member (52); The elastic member (51) is connected between the support member (52) and the bracket (50).

3. The multi-degree-of-freedom control rod driving rod simulation device according to claim 2, characterized in that: The support member (52) divides the accommodating space (63) into a first area (631) and a second area (632); the first area (631) is closer to an end of the core rod (53) away from the support member (52) than the second area (632); the elastic member (51) is located in the first area (631).

4. The multi-degree-of-freedom control rod driving rod simulation device according to claim 1, characterized in that: The multi-degree-of-freedom control rod drive rod simulation device also includes a coaxiality adjustment member (62) connected between the horizontal position adjustment unit (3) and the height adjustment unit (4), and the coaxiality adjustment member (62) has an arc surface that is in sliding contact with the horizontal position adjustment unit (3).

5. The multi-degree-of-freedom control rod driving rod simulation device according to claim 4, characterized in that: The coaxiality adjustment member (62) is hemispherical; the height adjustment unit (4) comprises a telescopic hydraulic cylinder connected between the coaxiality adjustment member (62) and the control rod drive rod simulation unit (5); The center of the coaxiality adjusting member (62) is colinear with the center axis of the telescopic hydraulic cylinder.

6. The multi-degree-of-freedom control rod driving rod simulation device according to claim 4, characterized in that: The multi-degree-of-freedom control rod drive rod simulation device also includes at least four fixing components (7) for fixing the position of the coaxiality adjustment member (62); each of the fixing components (7) includes a base (71) arranged on the horizontal position adjustment unit (3), and an abutment member (72) movably inserted through the base (71) and capable of abutting against the coaxiality adjustment member (62).

7. The multi-degree-of-freedom control rod driving rod simulation device according to claim 1, characterized in that: The horizontal position adjustment unit (3) comprises a first support (31), a second support (32) and a third support (33) which are connected in sequence; The first support (31) is connected to each of the legs (2), and the height adjustment unit (4) is connected to the third support (33); The second support (32) is slidably matched with the first support (31); the third support (33) is slidably matched with the second support (32); The relative sliding direction of the first support (31) and the second support (32) is perpendicular to the relative sliding direction of the second support (32) and the third support (33).

8. The multi-degree-of-freedom control rod driving rod simulation device according to claim 7, characterized in that: The horizontal position adjustment unit (3) further comprises a first guide rail (34) and a second guide rail (35); The first guide rail (34) is connected between the first support (31) and the second support (32), and the second support (32) is slidably matched with the first guide rail (34); The second guide rail (35) is connected between the second support (32) and the third support (33), and the third support (33) is slidably matched with the second guide rail (35).

9. The multi-degree-of-freedom control rod driving rod simulation device according to claim 8, characterized in that: A limiting piece is provided at the end of the first guide rail (34) and / or the second guide rail (35).

10. The multi-degree-of-freedom control rod driving rod simulation device according to claim 1, characterized in that: The horizontal position adjustment unit (3) is provided with a through hole (80) penetrating two opposite surfaces thereof, and the height adjustment unit (4) comprises a telescopic hydraulic cylinder; the telescopic hydraulic cylinder partially passes through the through hole (80); And / or, the support leg (2) comprises a first base (21) and a second base (22), the first base (21) being supported on the ground (81), the second base (22) being connected to the horizontal position adjustment unit (3), and the first base (21) and the second base (22) being capable of relative movement along the length direction of each other.

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