A test device for verifying the accuracy of ball counters in fuel loading and unloading systems

Abstract

The present invention relates to the technical field of test equipment, and in particular to a test equipment for verifying the accuracy of a ball counter in a fuel loading and unloading system, comprising: a frame; a fuel ball loading and unloading environment simulation part, which is arranged on the frame and is used to simulate the loading / unloading environment of the fuel balls rolling along a conveying pipeline; an electromagnetic counter, which is sleeved and installed on the outside of the fuel ball loading and unloading environment simulation part and is used to count the fuel balls rolling inside the part; a vibration environment simulation part, which is used to test the working performance of the electromagnetic counter in a vibration environment; and a temperature environment simulation part, which is used to test the working performance of the electromagnetic counter at different temperatures. The present invention imparts vibration and temperature adjustment functions to the pipeline, and simulates the feeding environment in the fuel loading and unloading system to the maximum extent, thereby making the data verified by the electromagnetic counter more accurate and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of test equipment, and in particular to a test equipment for verifying the accuracy of a ball counter in a fuel loading and unloading system. Background Art

[0002] The fuel loading and unloading system is an important system connected to the primary circuit of the reactor. It mainly performs the functions of loading new fuel into the core, unloading spent fuel from the core, recycling fuel elements back to the core, unloading and shutting down the reactor, emptying the core, and reloading.

[0003] The counter is an important process control device of the fuel loading and unloading system. Its main function is to detect the passing information of fuel balls and graphite balls in the stainless steel pipeline and provide the passing information to the superior control system. The counter has the functions of one-way counting and two-way counting, and can count whole balls and broken balls.

[0004] In order to ensure the reliability of the ball counter's performance, it is necessary to test it with test equipment to ensure that it can perform monitoring work after installation. However, the current methods for testing the accuracy of the ball counter are relatively simple and cannot adapt to the environment in the fuel loading and unloading system, which makes it impossible to verify the accuracy and reliability of the counter's detection performance. Summary of the invention

[0005] In view of the above-mentioned problems existing in the existing test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system, the present invention is proposed.

[0006] It is therefore an object of the present invention to provide a test apparatus for verifying the accuracy of a ball counter in a fuel handling system.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a test device for verifying the accuracy of a ball counter in a fuel loading and unloading system, comprising:

[0008] Frame;

[0009] The fuel ball loading and unloading environment simulation part is arranged on the frame and is used to simulate the loading / unloading environment of the fuel balls rolling along the conveying pipeline;

[0010] An electromagnetic counter is sleeved and installed outside the fuel ball loading and unloading environment simulation part to count the fuel balls rolling inside it;

[0011] The vibration environment simulation part is installed outside the fuel ball loading and unloading environment simulation part. It simulates the vibration of the conveying pipeline in the loading and unloading system and is used to test the working performance of the electromagnetic counter in the vibration environment.

[0012] The temperature environment simulation part is installed outside the electromagnetic counter and is used to test the working performance of the electromagnetic counter at different temperatures.

[0013] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention, the fuel ball loading and unloading environment simulation part includes:

[0014] pipeline;

[0015] A retainer, arranged inside the pipe;

[0016] The ball placement groove is provided on the surface of the retainer and is used to place the fuel balls;

[0017] A reciprocating pushing mechanism is arranged at one end of the retaining frame and is used to drive the retaining frame to make reciprocating motion in the pipeline;

[0018] The counting verification mechanism is installed at the tail of the reciprocating pushing mechanism and is used to verify the accuracy of the electromagnetic counter test by the pushing distance.

[0019] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system described in the present invention, the length of the retaining bracket is 1 / 3 of the total length of the pipeline, and a roller is rotatably installed at the front end center of the retaining bracket, and the roller rolls along the axial direction of the pipeline.

[0020] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system described in the present invention, the number of the ball placing grooves is not less than 5, and the 5 ball placing grooves are arranged on the surface of the retaining frame at equal intervals.

[0021] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention, the reciprocating pushing mechanism includes:

[0022] A rack, one end of which is connected to the rear end of the cage;

[0023] The speed regulating motor is installed on the top of the frame;

[0024] The gear is installed on the transmission end of the speed regulating motor and meshes with the rack. The speed regulating motor is used to drive the rack to move back and forth.

[0025] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system described in the present invention, the rack and the gear both use helical teeth, and the gear mold circle diameter is ≥65mm.

[0026] As a preferred solution of the test equipment for verifying the accuracy of the ball passing counter in the fuel loading and unloading system described in the present invention, the speed of the speed regulating motor is 50 rpm.

[0027] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention, the counting verification mechanism includes:

[0028] The number of light holes is the same as that of the ball slots, and they are horizontally penetrated on the rack;

[0029] The photoelectric counter is installed on the frame and is used to calculate the number of balls passing through the light hole.

[0030] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention, the vibration environment simulation part includes:

[0031] A vibration source is sleeve-mounted on the pipeline;

[0032] There are two sets of vibration seats, which are respectively sleeved and installed at both ends of the pipeline, so that the pipeline and the frame are elastically connected.

[0033] As a preferred solution of the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system described in the present invention, the vibration seat includes a clamp sleeved on the outside of the pipeline and a base installed on the frame, and an elastic column is connected between the clamp and the base.

[0034] Beneficial effects of the present invention: The present invention imparts vibration and temperature regulation functions to the pipeline, maximally simulating the material conveying environment in the fuel loading and unloading system, thereby making the data verified by the electromagnetic counter more accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0036] Figure 1 The figure is a schematic diagram of the overall structure of the test equipment used for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention.

[0037] Figure 2 It is a structural schematic diagram of the fuel ball loading and unloading environment simulation part in the test equipment of the present invention for verifying the accuracy of the ball passing counter in the fuel loading and unloading system.

[0038] Figure 3 The present invention is a schematic structural diagram of a reciprocating push mechanism in a test device for verifying the accuracy of a ball counter in a fuel loading and unloading system.

[0039] Figure 4The present invention is a schematic diagram of the structure of a counting verification mechanism in a test device for verifying the accuracy of a ball counter in a fuel loading and unloading system.

[0040] Figure 5 It is a schematic structural diagram of the vibration environment simulation part of the test equipment used for verifying the accuracy of the ball counter in the fuel loading and unloading system of the present invention.

[0041] Figure 6 The present invention is a schematic diagram of the structure of an elastic column in a test device for verifying the accuracy of a ball counter in a fuel loading and unloading system. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0045] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0046] Example 1

[0047] Reference Figure 1-4 , provides a test equipment for verifying the accuracy of ball counters in fuel loading and unloading systems, including:

[0048] Frame 100;

[0049] The fuel ball loading and unloading environment simulation part 200 is arranged on the frame 100 and is used to simulate the loading / unloading environment of the fuel ball rolling along the conveying pipeline;

[0050] The electromagnetic counter 300 is sleeved and installed outside the fuel ball loading and unloading environment simulation part 200, and is used to count the fuel balls rolling inside the fuel ball loading and unloading environment simulation part 200.

[0051] The fuel ball loading and unloading environment simulation part 200 includes:

[0052] Pipeline 201, the pipeline is made of 0Cr18Ni11Ti stainless steel pipe;

[0053] A retainer 202 is disposed inside the pipeline;

[0054] The ball placement groove 203 is provided on the surface of the retainer 202 and is used for placing the fuel balls;

[0055] The reciprocating pushing mechanism 204 is disposed at one end of the retaining frame 202 and is used to drive the retaining frame 202 to reciprocate in the pipe 201;

[0056] The counting verification mechanism 205 is installed at the tail of the reciprocating pushing mechanism 204 and is used to verify the accuracy of the electromagnetic counter 300 test by the pushing distance.

[0057] Specifically, the reciprocating pushing mechanism 204 drives the retaining frame 202 to move axially along the pipe 201. A combustion ball is placed in the ball-setting groove 203 on the surface of the retaining frame 202. When the retaining frame 202 moves, the combustion ball is driven to move synchronously. When the combustion ball moves to the electromagnetic counter 300, it will be counted by the electromagnetic counter 300. The counting verification mechanism 205 obtains the number of combustion balls through the reciprocating displacement distance, thereby verifying the accuracy of the counting of the electromagnetic counter 300.

[0058] The length of the retaining frame 202 is 1 / 3 of the total length of the pipeline 201, and a roller is rotatably installed at the front end center of the retaining frame 202, and the roller rolls along the axial direction of the pipeline 201. There are no less than 5 ball-setting grooves 203, and 5 ball-setting grooves 203 are evenly spaced on the surface of the retaining frame 202. The electromagnetic counter 300 is installed at 1 / 2 of the pipeline 201, and then when the retaining frame 202 is pushed, the combustion balls can be pushed to the electromagnetic counter 300 one by one, and the number of combustion balls is monitored by the electromagnetic counter 300.

[0059] The reciprocating pushing mechanism 204 comprises:

[0060] A rack 204a, one end of which is connected to the rear end of the retaining frame 202;

[0061] The speed regulating motor 204b is installed on the upper part of the frame 100;

[0062] The gear 204c is installed at the transmission end of the speed regulating motor 204b and meshes with the rack 204a. The gear 204c is driven by the speed regulating motor 204b to drive the rack 204a to move back and forth.

[0063] Specifically, a limit guide wheel 204d is provided at the bottom of the rack 204a to play a limit guide support role when the rack 204a moves back and forth.

[0064] Specifically, the rack 204a and the gear 204c both use helical teeth, the die diameter of the gear 204c is ≥65mm, and the speed of the speed regulating motor 204b is 50 rpm, ensuring that the speed range of the fuel balls in the ball slot 203 is 0.01 to 5.0 m / s, which better simulates the movement state of the fuel balls in the high temperature gas-cooled reactor.

[0065] The speed regulating motor 204b is regulated by the PLC controller, and the PLC controller controls the speed regulating motor 204b to operate. After the speed regulating motor 204b operates, it drives the gear 204c to rotate. The gear 204c is meshed with the rack 204a, so the rack 204a is driven to move linearly back and forth through linkage. The linear reciprocating motion can drive the retainer 202 to move back and forth in the pipe 201;

[0066] The counting verification mechanism 205 includes:

[0067] The light holes 205a, the number of which is the same as the ball-setting grooves 203, are horizontally penetrated on the rack 204a;

[0068] The photoelectric counter 205b is installed on the frame 100 and is used to count the amount of balls passing through the light hole 205a.

[0069] Specifically, the photoelectric counter 205b includes a counter, on which a light emitter and a light receiver are symmetrically installed. The light emitter and the light receiver are respectively located on both sides of the rack 204a. The light emitter will emit a light beam to illuminate the outside of the rack 204a. When the rack 204a is linearly displaced, a signal will be recorded each time the light beam passes through the light hole 205a and illuminates the light receiver. Each signal represents that the electromagnetic counter 300 will detect a burning ball. After complete testing, when the signal recorded on the counter is consistent with the detection quantity on the electromagnetic counter 300, it means that the electromagnetic counter 300 is accurate.

[0070] Example 2

[0071] Reference Figure 5-6 This embodiment is different from the first embodiment in that the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system disclosed in this embodiment further includes:

[0072] The vibration environment simulation part 400 is installed outside the fuel ball loading and unloading environment simulation part 200, which simulates the vibration of the conveying pipeline in the fuel loading and unloading system, and is used to test the working performance of the electromagnetic counter 300 in the vibration environment;

[0073] The vibration environment simulation part 400 includes:

[0074] A vibration source 401 is sleeve-mounted on the pipe 201;

[0075] There are two sets of vibration seats 402 , which are respectively sleeved and installed at both ends of the pipe 201 , so that the pipe 201 and the frame 100 are elastically connected.

[0076] The vibration base 402 includes a tie hoop 402a sleeved on the outside of the pipe 201 and a base 402b installed on the frame 100, and an elastic column 402c is connected between the tie hoop 402a and the base 402b.

[0077] Specifically, the elastic column 402c includes a pressing plate 402c-1, a column 402c-2 penetrating the base 402b is fixed to the bottom of the pressing plate 402c-1, a bolt 402c-3 penetrating the tie hoop 402a is fixed to the upper end of the pressing plate 402c-1, and a spring 402c-4 is sleeved on the outside of the column 402c-2.

[0078] The vibration source 401 adopts a vibration motor with a vibration frequency of 10 to 100 Hz. After vibration, the force will be transmitted to the pipeline 201, and the pipeline 201 transmits the vibration force to the vibration seat 402. The elastic setting of the vibration seat 402 makes the pipeline 201 vibrate at a certain frequency. This vibration can be used to vibrate the conveying pipeline in the fuel loading and unloading system, which is reliable for the electromagnetic counter 300 to detect data under different vibration frequencies.

[0079] The rest of the structure is the same as that of Example 1.

[0080] Example 3

[0081] Reference Figure 1 , this embodiment is different from the above embodiment in that: the test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system disclosed in this embodiment further includes:

[0082] The temperature environment simulation part 500 is used to test the working performance of the electromagnetic counter 300 at different temperatures;

[0083] Specifically, the temperature environment simulation part 500 includes a pipeline heater and a counter heater;

[0084] The pipe heater is mounted on the outside of the pipe 201 to control the temperature inside the pipe 201 at 10°C-250°C. The counter heater is installed on the electromagnetic counter 300 to simulate the temperature in the fuel loading and unloading system to ensure the reliability of the electromagnetic counter 300's detection data under different temperature environments.

[0085] The rest of the structure is the same as that of Example 2.

[0086] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to several modifications still falling within the scope of the appended claims.

[0087] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0088] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A test device for verifying the accuracy of a ball counter in a fuel loading and unloading system, characterized in that: include: A frame (100); A fuel ball loading and unloading environment simulation part (200) is arranged on the frame (100) and is used to simulate the loading / unloading environment of the fuel ball rolling along the conveying pipeline; An electromagnetic counter (300) is sleeved and installed outside the fuel ball loading and unloading environment simulation part (200) and is used to count the fuel balls rolling inside the part; A vibration environment simulation part (400) is installed outside the fuel ball loading and unloading environment simulation part (200) and simulates the vibration of the conveying pipeline in the loading and unloading system to test the working performance of the electromagnetic counter (300) in the vibration environment; The temperature environment simulation part (500) is installed outside the electromagnetic counter (300) and is used to test the working performance of the electromagnetic counter (300) at different temperatures.

2. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 1, characterized in that: The fuel ball loading and unloading environment simulation part (200) includes: pipeline(201); A retainer (202) is arranged inside the pipeline; A ball placement groove (203) is provided on the surface of the retaining frame (202) and is used for placing fuel balls; A reciprocating pushing mechanism (204) is arranged at one end of the retaining frame (202) and is used to drive the retaining frame (202) to perform reciprocating motion in the pipe (201); The counting verification mechanism (205) is installed at the tail of the reciprocating pushing mechanism (204) and is used to verify the accuracy of the electromagnetic counter (300) test through the pushing distance.

3. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system as claimed in claim 2, characterized in that: The length of the retaining frame (202) is 1 / 3 of the total length of the pipeline (201), and a roller is rotatably mounted at the center of the front end of the retaining frame (202), and the roller rolls axially along the pipeline (201).

4. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system as claimed in claim 3, characterized in that: The number of the ball placement grooves (203) is no less than 5, and the 5 ball placement grooves (203) are arranged at equal intervals on the surface of the retaining frame (202).

5. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 4, characterized in that: The reciprocating pushing mechanism (204) comprises: A rack (204a), one end of which is connected to the rear end of the retaining frame (202); A speed regulating motor (204b) is installed above the frame (100); The gear (204c) is installed on the transmission end of the speed regulating motor (204b) and meshes with the rack (204a). The gear (204c) is driven by the speed regulating motor (204b) to drive the rack (204a) to move back and forth.

6. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 5, characterized in that: The rack (204a) and the gear (204c) both use helical teeth, and the die diameter of the gear (204c) is ≥65mm.

7. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 6, characterized in that: The speed of the speed regulating motor (204b) is 50 revolutions per second.

8. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 7, characterized in that: The counting verification mechanism (205) comprises: The light-through holes (205a) are the same in number as the ball-setting grooves (203) and are horizontally penetrated on the rack (204a); The photoelectric counter (205b) is installed on the frame (100) and is used to calculate the amount of balls passing through the light hole (205a).

9. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 8, characterized in that: The vibration environment simulation part (400) comprises: A vibration source (401) is sleeve-mounted on the pipeline (201); The vibration seats (402) are provided in two groups and are respectively sleeved and installed at the two ends of the pipeline (201), so that the pipeline (201) and the frame (100) are elastically connected.

10. The test equipment for verifying the accuracy of the ball counter in the fuel loading and unloading system according to claim 9, characterized in that: The vibration seat (402) comprises a tie hoop (402a) sleeved on the outside of the pipeline (201) and a base (402b) installed on the frame (100), and an elastic column (402c) is connected between the tie hoop (402a) and the base (402b).

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