Angle detection mechanism of heat exchange pipe for heat exchange unit of high-temperature gas cooled reactor

Abstract

The utility model discloses an angle detection mechanism of a heat exchange pipe for a heat exchange unit of a high-temperature gas cooled reactor, which comprises an upper end plate and a lower end plate which are used for detecting the angle of a heat exchange bent pipe of each layer of heat exchange assembly in a heat exchange device of the high-temperature gas cooled reactor, the heat exchange bent pipe is provided with an upper end and a lower end which are communicated with each other, and the upper end plate is provided with a plurality of upper detection insertion holes. The upper detection insertion holes are staggered into layers from inside to outside, and the positions of all the upper detection insertion holes in each layer are arranged according to the positions of the upper ends of the heat exchange bent pipes in the heat exchange assembly in the corresponding layer; the lower end plate is provided with a plurality of lower detection inserting holes which are arranged in a staggered mode from inside to outside to form layers, and the positions of the lower detection inserting holes in each layer are arranged according to the positions of the lower ends of the heat exchange bent pipes in the heat exchange assembly of the corresponding layer. The beneficial effects of the utility model are that the angle distribution of the heat exchange bend pipe can be rapidly detected; the guide mechanism solves the problem of non-alignment, and the service life of the angle detection mechanism for the heat exchange pipe in repeated use is prolonged; operation is simple, acquisition speed is stable, and detection result reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to an angle detection mechanism for a heat exchange pipe used in a high-temperature gas-cooled reactor heat exchange unit. Background Art

[0002] High temperature gas-cooled reactors belong to the fourth generation of nuclear reactor technology. The heat exchange assembly is the core component of the high temperature gas-cooled reactor nuclear power plant, which is usually assembled in a five-layer set. The upper and lower ends of each heat exchange tube in the heat exchange assembly need to be inspected by inspectors to verify whether the angle distribution of the heat exchange tube after the S-bend is within the error range. When inspecting the angle distribution of the tube, the inspectors need to inspect the angle distribution according to the requirements of the technical drawings each time. This method has the following problems: (i) Low inspection efficiency: The entire inspection process requires manual inspection of each layer of heat exchange tubes, which is inefficient; (ii) Low inspection accuracy: Since the inspection results will produce errors based on the actual operation and experience of the inspectors, the inspection accuracy is low and the reliability of the results is poor. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides an angle detection mechanism for heat exchange pipes for a high temperature gas-cooled reactor heat exchange unit, which has high detection accuracy and high detection efficiency.

[0004] The utility model is realized through the following technical measures:

[0005] A heat exchange pipe angle detection mechanism for high-temperature gas-cooled reactor heat exchange, characterized in that it includes an upper end plate and a lower end plate for detecting the angle of the heat exchange bend pipe of each layer of heat exchange components in the high-temperature gas-cooled reactor heat exchange device, the heat exchange bend pipe has a connected upper end and a lower end, the upper end plate is provided with a plurality of upper detection holes, the upper detection holes are arranged in layers in a staggered manner from the inside to the outside, and the position of each of the upper detection holes in each layer is set according to the upper end position of the heat exchange bend pipe of the corresponding layer in the heat exchange component; the lower end plate is provided with a plurality of lower detection holes, the lower detection holes are arranged in layers in a staggered manner from the inside to the outside, and the position of each of the lower detection holes in each layer is set according to the lower end position of the heat exchange bend pipe of the corresponding layer in the heat exchange component.

[0006] Preferably, the upper detection sockets of each layer are located on the same base circle with the center of the upper end plate as the center.

[0007] Preferably, the lower detection sockets of each layer are located on the same base circle with the center of the lower end plate as the center.

[0008] Preferably, the detection mechanism further includes a guiding mechanism for guiding the heat exchange elbow to be inserted into the upper detection socket and / or the lower detection socket.

[0009] Preferably, the guiding mechanism comprises a connecting head and a plug-in rod, the connecting head having an abutment plane, a plug-in rod perpendicular to the abutment plane being provided on the abutment plane, one end of the plug-in rod being connected to the connecting head, and the other end being tightly inserted into the end portion of the heat exchange elbow to be tested; when the plug-in rod is inserted into the upper detection socket, the projection contour line of the abutment plane on the upper end plate has at least a part located outside the area surrounded by the boundary of the upper detection socket; when the plug-in rod is inserted into the lower detection socket, the projection contour line of the abutment plane on the lower end plate has at least a part located outside the area surrounded by the boundary of the lower detection socket.

[0010] Preferably, the length of the plug-in rod is greater than the thickness of the upper end plate and the lower end plate.

[0011] More preferably, the plug rod and the connecting head are integrally formed.

[0012] Preferably, the upper end plate and the lower end plate are made of materials that do not contain harmful elements such as Cl, F, S, Pb, etc., and are not easy to expand and shrink, so they are made of non-damaged nylon material in this application.

[0013] Preferably, the upper end plate is a circular panel.

[0014] More preferably, a plurality of hanging rib holes are provided at equal intervals on the upper end plate.

[0015] More preferably, three hanging rib holes are provided on the upper end plate at equal intervals.

[0016] Preferably, the lower end plate is a circular panel.

[0017] Preferably, the diameter of the upper end plate is slightly larger than the diameter of the lower end plate.

[0018] More preferably, a disc-shaped boss is provided on the end surface of the lower end plate close to the abutting plane.

[0019] Preferably, three rectangular hanging rib holes are provided on the upper end plate at equal intervals, and the centers of the hanging rib holes are located on a base circle with the center of the upper end plate as the center.

[0020] When the lower end plate of the utility model is used: determine the direction and position of each lower detection socket on the lower end plate, and then insert the guide mechanism into the lower detection socket. Since the length of the plug-in rod is greater than the thickness of the plate body of the lower end plate, the end of the plug-in rod can extend out of the lower end plate, and the heat exchange elbow to be tested is smoothly inserted into the corresponding lower detection socket under the guidance of the plug-in rod until the end of the heat exchange elbow contacts the abutment plane of the connector. At this time, the heat exchange elbow is plugged in place, so that the heat exchange elbow is smoothly inserted into the lower end plate. After the plug-in is completed, the guide mechanism can be pulled out;

[0021] When the upper end plate is in use: determine the direction and position of each lower detection socket on the upper end plate, and then insert the guide mechanism into the upper detection socket. Since the length of the plug-in rod is greater than the thickness of the upper end plate, the end of the plug-in rod can extend out of the lower end plate. The heat exchange elbow to be tested is smoothly inserted into the corresponding upper detection socket under the guidance of the plug-in rod until the end of the heat exchange elbow contacts the abutment plane of the connector. At this time, the heat exchange elbow is plugged in place, so that the hanging rib plate can ensure that the upper end plate can smoothly cover the pipe through the guide mechanism.

[0022] The beneficial effects of the present invention are as follows: (1) the angle distribution within the standard error of the five-layer heat exchange bend is concentrated on the same end plate, so that the angle distribution of the heat exchange bend can be quickly detected; (2) the design of the guide mechanism provides convenience for the template to be inserted into the heat exchange tube. This design is conducive to solving the problem of misalignment caused by the need to insert the upper end plate or the lower end plate at the same time due to the excessive number of tubes, and also improves the life of the heat exchange tube angle detection mechanism after repeated use; (3) the present invention is easy to operate and has a stable acquisition speed, which improves the reliability of the detection results; (4) it adopts dense nylon material, which is low in cost and easy to process, reduces the scratches and bumps between the tube and the upper end plate and the lower end plate, and improves the rate of tube angle distribution detection; (5) the principle is clear and simple, the subcontracting equipment is easy to purchase, and the organization and assembly are easy to implement, which has a high practical promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 : is a structural diagram of the upper end plate of the utility model (the dotted lines at A'~E' in the figure represent the base circles where the detection sockets on different layers are located).

[0024] Figure 2 It is a side view of the upper end plate of the utility model.

[0025] Figure 3 : is a structural diagram of the lower end plate of the utility model (in the figure, the dotted lines at A~E represent the base circles where the detection holes are located at different layers; the dotted line at F represents the contour line of the boss).

[0026] Figure 4 It is a side view of the lower end plate of the utility model.

[0027] Figure 5 It is a structural diagram of the guide mechanism of the utility model.

[0028] In the attached drawings: 1. upper end plate; 11. upper detection socket; 12. hanging rib hole; 2. lower end plate; 21. lower detection socket; 22. boss; 3. guide mechanism; 31. connector; 311. abutment plane; 32. plug-in rod. DETAILED DESCRIPTION

[0029] The following describes the implementation of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application.

[0030] It should be noted that the process equipment or devices not specifically specified in the following embodiments are all conventional equipment or devices in the art.

[0031] In addition, it should be understood that one or more method steps mentioned in this application do not exclude the existence of other method steps before or after the combination step or the insertion of other method steps between these explicitly mentioned steps, unless otherwise specified; it should also be understood that the combination connection relationship between one or more devices / apparatuses mentioned in this application does not exclude the existence of other devices / apparatuses before or after the combination device / apparatus or the insertion of other devices / apparatuses between these two explicitly mentioned devices / apparatuses, unless otherwise specified. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or the scope of implementation of this application. Changes or adjustments in their relative relationships shall also be regarded as the scope of implementation of this application without substantial changes in the technical content.

[0032] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0036] The present application is further described below in conjunction with specific embodiments, but the protection scope of the present application is not limited thereto.

[0037] The utility model discloses a heat exchange pipe angle detection mechanism for heat exchange of a high-temperature gas-cooled reactor, comprising an upper end plate 1 and a lower end plate 2 for detecting the angle of a heat exchange bend of a five-layer heat exchange assembly in a high-temperature gas-cooled reactor heat exchange device. The heat exchange bend has a connected upper end and a lower end. The upper end plate 1 is provided with a plurality of upper detection holes 11, and the upper detection holes 11 are arranged in layers in a staggered manner from the inside to the outside, and the position of each of the upper detection holes in each layer is set according to the upper end position of the heat exchange bend of the corresponding layer in the heat exchange assembly; the lower end plate 2 is provided with a plurality of lower detection holes 21, and the lower detection holes 21 are arranged in layers in a staggered manner from the inside to the outside, and the position of each of the lower detection holes in each layer is set according to the lower end position of the heat exchange bend of the corresponding layer in the heat exchange assembly.

[0038] In some embodiments of the present invention, the upper detection holes 11 of each layer are located on the same base circle with the center of the upper end plate as the center.

[0039] In some embodiments of the present invention, the lower detection holes 21 of each layer are located on the same base circle with the center of the lower end plate as the center.

[0040] In some embodiments of the present invention, the detection mechanism further includes a guiding mechanism 3 for guiding the heat exchange elbow to be inserted into the upper detection socket and / or the lower detection socket.

[0041] In some embodiments of the utility model, the guide mechanism 3 includes a connecting head 31 and a plug-in rod 32, the connecting head 31 has an abutment plane 311, and the abutment plane 311 is provided with a plug-in rod 32 perpendicular to the abutment plane, one end of the plug-in rod 32 is connected to the connecting head 31, and the other end is tightly inserted into the end of the heat exchange elbow to be tested; when the plug-in rod 32 is inserted into the upper detection socket 11, the projection contour line of the abutment plane 311 on the upper end plate has at least a part outside the area surrounded by the boundary of the upper detection socket; when the plug-in rod 32 is inserted into the lower detection socket 21, the projection contour line of the abutment plane 311 on the lower end plate has at least a part outside the area surrounded by the boundary of the lower detection socket.

[0042] In some embodiments of the present invention, the length of the plug rod 32 is greater than the thickness of the upper end plate and the lower end plate, so as to ensure that when the plug rod is inserted into the upper end plate or the lower end plate, the end of the plug rod can extend from the upper end plate or the lower end plate to form a plug end that is plugged in with the heat exchange elbow to be tested.

[0043] In some embodiments of the present invention, the plug rod 32 and the connector 31 are integrally formed.

[0044] In some embodiments of the present invention, the upper end plate 1 and the lower end plate 2 are selected to be free of harmful elements such as Cl, F, S, Pb, and are not easy to expand and shrink, so they are made of non-damaged nylon material in this application.

[0045] In some embodiments of the present invention, the upper end plate 1 is a circular panel.

[0046] In some embodiments of the present invention, a plurality of hanging rib holes 12 are provided on the upper end plate 1 at equal intervals.

[0047] In some embodiments of the present invention, the lower end plate 2 is a circular panel.

[0048] In some embodiments of the present invention, the diameter of the upper end plate 1 is slightly larger than the diameter of the lower end plate 2 .

[0049] In some embodiments of the present invention, a disc-shaped boss 22 is provided on the end surface of the lower end plate 2 close to the abutting plane.

[0050] In some embodiments of the present invention, a plurality of notches 221 are processed on the side wall of the boss 22 to prevent the edge of the boss from obstructing the lower detection socket 21 .

[0051] In some embodiments of the present invention, three rectangular hanging rib holes 12 are evenly spaced on the upper end plate 1, and the centers of the hanging rib holes 12 are located on a base circle with the center of the upper end plate 1 as the center.

[0052] When the lower end plate of the utility model is used: determine the direction and position of each lower detection socket 21 on the lower end plate 2, and then insert the guide mechanism 3 into the lower detection socket 21. Since the length of the plug-in rod 32 is greater than the thickness of the plate body of the lower end plate 2, the end of the plug-in rod 32 can extend out of the lower end plate 2, and the heat exchange elbow to be tested is smoothly inserted into the corresponding lower detection socket under the guidance of the plug-in rod 32 until the end of the heat exchange elbow contacts the abutment plane of the connector. At this time, the heat exchange elbow is plugged in place, so that the heat exchange elbow is smoothly inserted into the lower end plate. After the plug-in is completed, the guide mechanism can be 3 Pull out; when the upper end plate 1 is used: determine the direction and position of each lower detection socket on the upper end plate, and then insert the guide mechanism 3 into the upper detection socket 11. Since the length of the plug rod 32 is greater than the thickness of the upper end plate 1, the end of the plug rod 32 can extend out of the lower end plate 2. The heat exchange elbow to be tested is smoothly inserted into the corresponding upper detection socket 11 under the guidance of the plug rod 32, until the end of the heat exchange elbow contacts the abutment plane 311 of the connector 31. At this time, the heat exchange elbow is plugged in place, so that the hanging rib plate can ensure that the upper end plate can smoothly cover the pipe through the guide mechanism. The upper and lower end plates are made of nylon, which is simple to process and low in cost. The principle of this embodiment is clear and simple, the subcontracting equipment is easy to purchase, and the organization and assembly are easy to implement, which has a high practical promotion value.

[0053] The above examples are intended to illustrate the embodiments disclosed in the present utility model and should not be construed as limitations on the present utility model. In addition, the various modifications listed herein and the changes in the methods and compositions in the utility model are obvious to those skilled in the art without departing from the scope and spirit of the present utility model. Although the present utility model has been specifically described in conjunction with a variety of specific preferred embodiments of the present utility model, it should be understood that the present utility model should not be limited to these specific embodiments. In fact, various modifications as described above that are obvious to those skilled in the art to obtain the utility model should be included in the scope of the present utility model.

Claims

1. An angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units, characterized in that: It comprises an upper end plate and a lower end plate for detecting the angle of the heat exchange bend of each layer of the heat exchange assembly in the high-temperature gas-cooled reactor heat exchange device. The heat exchange bend has a connected upper end and a lower end. The upper end plate is provided with a plurality of upper detection holes, which are arranged in layers in a staggered manner from the inside to the outside, and the positions of the upper detection holes of each layer are arranged according to the upper end positions of the heat exchange bends of the corresponding layer in the heat exchange assembly; the lower end plate is provided with a plurality of lower detection holes, which are arranged in layers in a staggered manner from the inside to the outside, and the positions of the lower detection holes of each layer are arranged according to the lower end positions of the heat exchange bends of the corresponding layer in the heat exchange assembly.

2. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 1, characterized in that: The upper detection sockets of each layer are located on the same base circle with the center of the upper end plate as the center.

3. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 1, characterized in that: The lower detection sockets of each layer are located on the same base circle with the center of the lower end plate as the center.

4. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 1, characterized in that: The detection mechanism also includes a guiding mechanism for guiding the heat exchange elbow to be inserted into the upper detection socket and / or the lower detection socket.

5. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 4, characterized in that: The guide mechanism includes a connector and a plug rod, the connector has an abutment plane, the abutment plane is provided with a plug rod perpendicular to the abutment plane, one end of the plug rod is connected to the connector, and the other end is tightly inserted into the end of the heat exchange elbow to be tested; when the plug rod is inserted into the upper detection socket, the projection contour line of the abutment plane on the upper end plate has at least a part located outside the area surrounded by the boundary of the upper detection socket; When the insertion rod is inserted into the lower detection socket, the projection contour line of the abutment plane on the lower end plate has at least a portion located outside the area surrounded by the boundary of the lower detection socket.

6. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 5, characterized in that: The length of the plug-in rod is greater than the thickness of the upper end plate and the lower end plate.

7. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 1, characterized in that: The upper end plate is a circular panel.

8. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 1, characterized in that: The lower end plate is a circular panel.

9. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 7, characterized in that: The upper end plate is provided with a plurality of hanging rib holes at equal intervals.

10. The angle detection mechanism for heat exchange pipes for high temperature gas-cooled reactor heat exchange units according to claim 9, characterized in that: The upper end plate is provided with three rectangular hanging rib holes at equal intervals, and the centers of the hanging rib holes are located on a base circle with the center of the upper end plate as the center.

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