Testing device with shielding function

Abstract

The utility model discloses a testing device with a shielding function, which relates to the technical field of testing devices in the identification test process of nuclear power DCS (Distributed Control System) and reactor core and ex-reactor nuclear testing system products, and comprises a cabinet body, the upper half part of the cabinet body is of a cuboid structure, and the lower half part of the cabinet body is of a cylinder structure; the front side of the upper half part of the cabinet body is provided with a front door, and the front door is provided with anti-electromagnetic radiation glass. Metal guide rails are arranged on the side walls of the two sides in the cabinet body, and patch boards and wiring terminals are arranged on the metal guide rails. The top of the cabinet body is provided with wire inlet and outlet holes. The outer wall of the lower half part of the cabinet body is provided with a spiral wire duct, and the top end of the spiral wire duct is communicated with the interior of the cabinet body. According to the device provided by the utility model, the defect that the conventional testing device cannot be visible and monitored in real time when the shielding function is met is overcome; the collecting and stretching requirements of the test cable are met, the wave-shaped stress of cable storage and stretching is reduced, and abrasion caused by friction between cable winding is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of testing devices for nuclear power DCS and core and external nuclear testing system products in the process of identification tests, in particular to a testing device with a shielding function. Background Art

[0002] As a new type of nuclear power identification test device, the test device with coiling, shielding and visual functions has always been an important component of the enterprise's research and development, production of prototypes, simulation parts, and equipment for identification tests. It is widely used in nuclear power identification tests and related fields, and plays an irreplaceable role in product identification tests, on-site commissioning and testing.

[0003] Currently, commonly used test devices are made of steel frames or wood (tables), which cannot provide electromagnetic radiation protection or visual real-time observation of test and metering equipment. The use and retraction of test cables can easily lead to cable damage and other problems. In particular, there are strict requirements on the bending radius of core and off-core detector (armored metal cable) cables, and the size of the bending radius directly affects the test accuracy and results of distributed capacitance and insulation resistance. At the same time, since the identification test and test process require multiple windings and stretchings, the traditional winding method of metal cables can easily lead to repeated wear and tear between cables and easy damage, which directly affects the cable life and ultimately leads to test failure. The identification test has a complex laboratory environment (electromagnetic interference from the operation of the surrounding mechanical vibration table, electromagnetic interference from the EMC test work), as well as extra-long cables connecting the test device and the identified equipment (simulation parts) (generally 25-meter multi-core cables), the detector assembly itself contains more than 10 meters of armored cables that are easily damaged by friction, the detector and nuclear testing equipment themselves have small signals (mV level) and high precision requirements, the transportation of the test device (forklift transportation operation), the small signals generated by the identified equipment in the nuclear power field and high precision requirements, the placement of the on-site test equipment, the layout of the test cables, the bending angles, and the crossings have played a key role in restricting the test results of the identification test.

[0004] Therefore, how to change the structure of the test device so that it has the characteristics of easy carrying, fast movement, standardized layout to avoid cable damage, and visual operation is a technical problem that technical personnel in this field currently need to solve. Summary of the invention

[0005] In order to solve the above technical problems, the utility model provides a testing device with a shielding function, which effectively reduces the influence of on-site electromagnetic radiation interference and cable conduction interference on the accuracy of identification testing.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a testing device with a shielding function, comprising a cabinet, wherein the upper half of the cabinet is a rectangular parallelepiped structure, and the lower half of the cabinet is a cylindrical structure; a front door is arranged on the front side of the upper half of the cabinet, and an electromagnetic radiation-proof glass is arranged on the front door; metal guide rails are arranged on the side walls on both sides of the interior of the cabinet, a plugboard is arranged on the metal guide rail on one side, and a wiring terminal is arranged on the metal guide rail on the other side; a wire inlet and outlet hole is arranged on the top of the cabinet; a spiral wire groove is arranged on the outer wall of the lower half of the cabinet, and the top end of the spiral wire groove is connected with the interior of the cabinet.

[0008] Optionally, a bottom support is provided under the cabinet.

[0009] Optionally, a sleeper is arranged under the base.

[0010] Optionally, universal wheels are provided under the sleepers.

[0011] Optionally, the sleepers are iron bars of 100*100m*1000mm.

[0012] Optionally, the base is an iron plate with a side length of 1000 mm and a thickness of 5 mm.

[0013] Optionally, the total height of the cabinet is 1500 mm, the lower half of the cabinet is a cylinder with a diameter of 900 mm and a height of 1000 mm, and the upper half of the cabinet is a cuboid with a side length of 800 mm and a height of 500 mm.

[0014] Optionally, the width and depth of the spiral wire groove are both 60 mm.

[0015] Optionally, the cabinet body is made of iron sheet.

[0016] Optionally, a cable protection loop is provided on the outer wall of the lower half of the cabinet, and the cable protection loop is used to fix the spiral wire trough on the outer wall of the lower half of the cabinet.

[0017] Compared with the prior art, the utility model has achieved the following technical effects:

[0018] The test device with shielding function in the utility model realizes that the test metering device in the test device is not subject to external electromagnetic interference through the iron sheet and the anti-electromagnetic radiation glass device, passes the commercial electromagnetic compatibility test (shielding effectiveness reaches 40dB), thereby ensuring that the test data (precision) is reliable, and has a visual function, which solves the shortcomings of the previous test device that cannot be visualized and monitored in real time when the shielding function is met; because the spiral wire groove is welded on the outside of the component, the collection and stretching requirements of the test cable are met, the winding radius of the ordinary cable shaft is small at first and then large (the winding diameter is inconsistent), and the core and the external detector cable have very high requirements on the bending radius. The cable collection radius of this component is 450mm and consistent, avoiding the phenomenon that the previous cable winding radius is too small and inconsistent, affecting the test accuracy, and the spiral design can minimize the cable rotation stress generated when the cable is stretched, reduce the occurrence of cable storage and stretching wave-shaped stress, and avoid wear caused by friction between cable winding; the lower iron sleepers of the component can play a role in stabilizing the center of gravity, highly meeting the requirements of forklift transportation operations; at the same time, the four universal wheels meet the needs of flexible and convenient movement and rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure decomposition of the test device with shielding function of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the testing device with shielding function of the utility model.

[0022] Explanation of the reference numerals: 1. cabinet; 2. base; 3. front door; 4. sleeper; 5. cable protection coil; 6. anti-electromagnetic radiation glass; 7. spiral wire trough; 8. support plate; 9. plug board; 10. metal guide rail; 11. universal wheel; 12. wire entry and exit hole; 13. hinge; 14. door lock; 15. wiring terminal. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 and 2 As shown, the present embodiment provides a test device with a shielding function, including a cabinet 1, the upper half of the cabinet 1 is a rectangular parallelepiped structure, and the lower half of the cabinet 1 is a cylindrical structure; a front door 3 is arranged on the front side of the upper half of the cabinet 1, and an anti-electromagnetic radiation glass 6 is arranged on the front door 3, one side of the front door 3 is connected to the cabinet 1 through a hinge 13, and a door lock 14 is arranged on the other side of the front door 3; metal guide rails 10 are arranged on the side walls on both sides of the interior of the cabinet 1, a plug board 9 is arranged on the metal guide rail 10 on one side, and a wiring terminal 15 is arranged on the metal guide rail 10 on the other side, and the wiring terminal 15 is used to connect the test cable and the test end (or output end) of the test metering facility; an inlet and outlet hole 12 is arranged on the top of the cabinet 1 for the entry and exit of the test cable and the plug board 9 cable and the protective grounding wire; a spiral wire groove 7 is arranged on the outer wall of the lower half of the cabinet 1, and the top of the spiral wire groove 7 is connected to the interior of the cabinet 1, and the spiral wire groove 7 is used to fix and coil the test cable.

[0025] In this specific embodiment, the cabinet 1 is made of iron sheet, so as to shield the electromagnetic interference outside the cabinet. The total height of the cabinet 1 is 1500mm. The lower part of the cabinet 1 is a cylinder with a diameter of 900mm and a height of 1000mm, and the upper part of the cabinet 1 is a rectangular parallelepiped with a side length of 800mm and a height of 500mm. A support plate 8 is provided in the cabinet 1, and the support plate 8 is used to place the monitoring and measuring equipment. The support plate 8 is connected to the cabinet 1 by welding.

[0026] A base 2 is provided under the cabinet 1. The base 2 is an iron plate with a side length of 1000mm and a thickness of 5mm. A sleeper 4 is provided under the base 2. The sleeper 4 is an iron bar with a size of 100*100m*1000mm. A universal wheel 11 is provided under the sleeper 4, and the sleeper 4 and the universal wheel 11 are connected by screws. The width and depth of the spiral wire trough 7 are both 60mm. A cable protection coil 5 is provided on the outer wall of the lower half of the cabinet 1, and the cable protection coil 5 is used to fix the spiral wire trough 7 on the outer wall of the lower half of the cabinet 1.

[0027] The metal rail 10 is connected to the cabinet 1 by screws. The PE grounding wire is connected to the connection between the metal rail 10 and the cabinet 1 and is led out of the device through the upper wire inlet and outlet hole 12 to prevent various interference signals carried on the housing of the device.

[0028] In a more specific embodiment, the operator can customize the thickness of the iron plate of the cabinet 1 and the model of the electromagnetic radiation protection glass 6 according to different shielding effectiveness level requirements in actual use, and seal the holes and gaps with copper wire mesh (film).

[0029] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0030] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A test device with shielding function, characterized in that: It includes a cabinet, the upper part of which is a rectangular structure, and the lower part of which is a cylindrical structure; a front door is provided on the front side of the upper part of the cabinet, and anti-electromagnetic radiation glass is provided on the front door; metal guide rails are provided on the side walls on both sides of the interior of the cabinet, a power strip is provided on the metal guide rail on one side, and connection terminals are provided on the metal guide rail on the other side; wire entry and exit holes are provided on the top of the cabinet; a spiral wire groove is provided on the outer wall of the lower part of the cabinet, and the top end of the spiral wire groove is connected with the interior of the cabinet.

2. The test device with shielding function according to claim 1, characterized in that: A bottom support is arranged below the cabinet.

3. The test device with shielding function according to claim 2, characterized in that: A sleeper is arranged below the bottom support.

4. The testing device with shielding function according to claim 3, characterized in that: Universal wheels are arranged under the sleepers.

5. The testing device with shielding function according to claim 3, characterized in that: The sleepers are iron bars with a size of 100*100m*1000mm.

6. The testing device with shielding function according to claim 2, characterized in that: The base is an iron plate with a side length of 1000 mm and a thickness of 5 mm.

7. The testing device with shielding function according to claim 1, characterized in that: The total height of the cabinet is 1500mm. The lower part of the cabinet is a cylinder with a diameter of 900mm and a height of 1000mm, and the upper part of the cabinet is a cuboid with a side length of 800mm and a height of 500mm.

8. The testing device with shielding function according to claim 1, characterized in that: The width and depth of the spiral wire groove are both 60 mm.

9. The testing device with shielding function according to claim 1, characterized in that: The cabinet body is made of iron sheet.

10. The testing device with shielding function according to claim 1, characterized in that: A cable protection loop is arranged on the outer wall of the lower half of the cabinet, and the cable protection loop is used to fix the spiral wire trough on the outer wall of the lower half of the cabinet.

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