Cover body test assembly for testing sealing performance of small-volume container

Abstract

The utility model discloses a cover body testing assembly for testing the sealing performance of a small-volume container, and particularly relates to the technical field of container top cover sealing testing, the cover body testing assembly comprises a testing cover and a pump body, the testing cover is arranged on the periphery of a top cover in a sealing and covering mode, and a plurality of gas leakage detectors are installed in the testing cover. The air inlet end of the pump body is connected with an air inlet pipe, a flow meter is installed on the air inlet pipe, and the air outlet end of the pump body is connected with an air outlet pipe. The device is simple in structure and convenient to use, in the testing process, it is firstly guaranteed that the testing cover is sealed on the top cover, then the pump body is started to introduce gas into the pressure container provided with the top cover for pressurization, whether leakage occurs or not can be monitored in real time through the gas leakage detector, and the pressure range can be adjusted by adjusting the pressure range. The flow meter is used for observing different gas flows and the pressure gauge is used for observing different pressures, so that the fluctuation condition in actual operation is simulated, and the sealing durability and reliability of the top cover under different pressure grades can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of container top cover sealing test, in particular to a cover body testing component for testing the sealing performance of a small-volume container. Background Art

[0002] In nuclear power plants, especially during the reactor maintenance phase, the "top cover" (Dummy Head or Dummy TopClosure) is a device that temporarily replaces the top structure of the real reactor pressure vessel. It is mainly used to cover the opening of the pressure vessel when the reactor is shut down for maintenance to maintain the closed environment inside and prevent contaminants from entering, while also preventing coolant leakage and maintaining nuclear safety.

[0003] Before the top cover of a pressure vessel is put into use, a sealing test is required to ensure that the top cover can effectively prevent coolant leakage after installation and maintain a closed environment inside the reactor. Based on this, a cover test assembly for testing the sealing performance of a small-volume container is proposed. Utility Model Content

[0004] The utility model aims to provide a cover body testing assembly for testing the sealing performance of a small-volume container, so as to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a cover body testing assembly for testing the sealing performance of a small-volume container, comprising:

[0006] A test cover, which can be sealed around the outer periphery of the top cover of the container, and a plurality of gas leakage detectors are installed in the test cover;

[0007] A pump body, wherein the air inlet end of the pump body is connected to an air inlet pipe, a flow meter is installed on the air inlet pipe, the air outlet end of the pump body is connected to an air outlet pipe, a pressure gauge is installed on the air outlet pipe, and the air outlet end of the air outlet pipe is connected to a pressure container with a top cover installed.

[0008] Preferably, the test cover comprises a first half cover and a second half cover, first fillet strips are fixed at both ends of the first half cover facing the second half cover, first fillet grooves are formed at both ends of the second half cover facing the first half cover, and the first fillet strips are inserted and matched with the first fillet grooves.

[0009] Preferably, a second fillet is fixed to the bottom end of the first half cover facing the second half cover, a second fillet groove is formed at the bottom end of the second half cover facing the first half cover, and the second fillet is inserted and matched in the second fillet groove.

[0010] Preferably, screw holes are provided on the first fillet and the second fillet, and fastening screws that can pass through the screw holes are screwed onto the outer wall of the second half cover.

[0011] Preferably, the upper end surfaces of the first half cover and the second half cover are both fixed with arc-shaped convex edges, and the inner wall of the arc-shaped convex edge is provided with a slot.

[0012] Preferably, an upper sealing strip is fixed to the inner upper end of the slot, and a lower sealing strip is fixed to the inner lower end of the slot.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The utility model has a simple structure and is easy to use. During the test, first ensure that the test cover is sealed on the top cover, then start the pump body to pass gas to pressurize the pressure vessel with the top cover installed, and use the gas leakage detector to monitor whether there is leakage in real time. By adjusting the pressure range, using a flow meter to observe different gas flow rates and a pressure gauge to observe different pressures, the fluctuations in actual operation can be simulated, and the sealing durability and reliability of the top cover at different pressure levels can be tested.

[0015] 2. The test cover of the utility model is assembled from a first half cover and a second half cover, so it is more convenient to connect with the top cover, and does not require a large number of bolts to tighten while ensuring sealing. The upper sealing strip and the lower sealing strip can squeeze the edge of the top cover, thereby increasing the sealing of the test cover after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application 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 recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the pump body, the air inlet pipe and the air outlet pipe of the utility model;

[0019] Figure 3 This is one of the schematic diagrams of the disassembly of the first half cover and the second half cover of the utility model;

[0020] Figure 4 This is the second schematic diagram of the disassembly of the first half cover and the second half cover of the utility model.

[0021] Description of reference numerals:

[0022] 1. Test cover; 101. First half cover; 102. Second half cover; 2. Arc convex edge; 3. Slot; 4. Pump body; 5. Inlet pipe; 6. Outlet pipe; 7. Flow meter; 8. Pressure gauge; 9. Upper sealing strip; 10. Lower sealing strip; 11. First embedded groove; 12. First embedded strip; 13. Screw hole; 14. Second embedded groove; 15. Second embedded strip; 16. Gas leak detector; 17. Fastening screws. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model provides Figure 1-2 A cover body test assembly for testing the sealing performance of a small-volume container is shown, comprising a test cover 1 and a pump body 4. The test cover 1 can be sealingly covered on the periphery of the top cover of the container, and a plurality of gas leakage detectors 16 are installed in the test cover 1. The gas leakage detectors 16 are installed in multiple positions in the test cover 1, and can detect leakage in the first time, and can accurately determine whether there is a tiny leakage, to ensure that strict safety standards are met. The air inlet end of the pump body 4 is connected to an air inlet pipe 5, on which a flow meter 7 is installed, and the air outlet end of the pump body 4 is connected to an air outlet pipe 6, on which a pressure gauge 8 is installed, and the air outlet end of the air outlet pipe 6 is connected to the pressure vessel on which the top cover is installed. By adjusting the pressure range, the flow meter 7 is used to observe different gas flow rates and the pressure gauge 8 is used to observe different pressures to simulate the fluctuations in actual operation, so as to test the sealing durability and reliability of the top cover at different pressure levels.

[0025] Among them, see also Figure 3 and Figure 4 As shown, the upper end faces of the first half cover 101 and the second half cover 102 are both fixed with an arcuate convex edge 2, the inner wall of the arcuate convex edge 2 is provided with a slot 3, the upper end of the inner part of the slot 3 is fixed with an upper sealing strip 9, and the lower end of the inner part of the slot 3 is fixed with a lower sealing strip 10.

[0026] In addition, see Figure 3 and Figure 4 As shown, the test cover 1 includes a first half cover 101 and a second half cover 102. First fillet strips 12 are fixed at both ends of the first half cover 101 facing the second half cover 102. First embedding grooves 11 are opened at both ends of the second half cover 102 facing the first half cover 101. The first fillet strips 12 are inserted and matched with the first embedding grooves 11.

[0027] Secondly, a second fillet 15 is fixed to the bottom end of the first half cover 101 facing the second half cover 102 , and a second embedding groove 14 is formed at the bottom end of the second half cover 102 facing the first half cover 101 . The second fillet 15 is inserted and matched in the second embedding groove 14 .

[0028] Screw holes 13 are formed on the first molding 12 and the second molding 15 , and fastening screws 17 that can penetrate the screw holes 13 are screwed onto the outer wall of the second half cover 102 .

[0029] Through the above technical solution:

[0030] When the first half cover 101 and the second half cover 102 are butt-jointedly mounted on the top cover, the slot 3 on the arc-shaped convex edge 2 is first aligned with the edge of the top cover, and then the first half cover 101 and the second half cover 102 are brought close together to embed the edge of the top cover, and at the same time, the first fillet 12 is embedded in the first embedding groove 11, and the second fillet 15 is embedded in the second embedding groove 14, and finally the fastening screws 17 are screwed on to tighten.

[0031] The upper sealing strip 9 and the lower sealing strip 10 can squeeze the edge of the top cover, thereby increasing the sealing performance of the test cover 1 after installation.

[0032] Secondly, a sealing gasket may be provided at the connection between the first half cover 101 and the second half cover 102. When the gaskets are connected, they are pressurized against each other, which can further improve the sealing performance.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cover testing assembly for testing the sealing performance of a small-volume container, characterized in that: include: A test cover (1), the test cover (1) can be sealedly covered on the periphery of the top cover of the container, and a plurality of gas leakage detectors (16) are installed in the test cover (1); A pump body (4), wherein the air inlet end of the pump body (4) is connected to an air inlet pipe (5), a flow meter (7) is installed on the air inlet pipe (5), the air outlet end of the pump body (4) is connected to an air outlet pipe (6), a pressure gauge (8) is installed on the air outlet pipe (6), and the air outlet end of the air outlet pipe (6) is connected to a pressure container with a top cover installed.

2. A cover testing assembly for testing the sealing performance of a small-volume container according to claim 1, characterized in that: The test cover (1) comprises a first half cover (101) and a second half cover (102); first fillet strips (12) are fixed to both ends of the first half cover (101) facing the second half cover (102); first embedding grooves (11) are formed on both ends of the second half cover (102) facing the first half cover (101); and the first embedding strips (12) are inserted and matched in the first embedding grooves (11).

3. A cover testing assembly for testing the sealing performance of a small-volume container according to claim 2, characterized in that: A second fillet (15) is fixed to the bottom end of the first half cover (101) on the side facing the second half cover (102), a second embedding groove (14) is formed at the bottom end of the second half cover (102) on the side facing the first half cover (101), and the second fillet (15) is inserted and matched in the second embedding groove (14).

4. A cover testing assembly for testing the sealing performance of a small-volume container according to claim 3, characterized in that: The first fillet (12) and the second fillet (15) are both provided with screw holes (13), and the outer wall of the second half cover (102) is screwed with a fastening screw (17) that can penetrate the screw hole (13).

5. A cover testing assembly for testing the sealing performance of a small-volume container according to claim 2, characterized in that: The upper end surfaces of the first half cover (101) and the second half cover (102) are both fixed with arc-shaped convex edges (2), and the inner wall of the arc-shaped convex edge (2) is provided with a slot (3).

6. A cover testing assembly for testing the sealing performance of a small-volume container according to claim 5, characterized in that: An upper sealing strip (9) is fixed to the inner upper end of the slot (3), and a lower sealing strip (10) is fixed to the inner lower end of the slot (3).

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