Vacuumizing test device

Abstract

The utility model discloses a vacuumizing test device, which is used for solving the technical problems of clumsy design and complicated use of the vacuumizing test device in the prior art, and belongs to the technical field of test devices. The device comprises an air exhaust joint, the air exhaust joint is provided with an upper interface, a lower interface, a left interface and a right interface, the interiors of the four interfaces are mutually communicated, the upper interface of the air exhaust joint is connected with a pressure instrument, the lower interface of the air exhaust joint can be inserted into an assembly to be examined, the left interface of the air exhaust joint is connected with the right end of a straight-through ball valve I, and the right end of the straight-through ball valve II is connected with the air exhaust joint. The left end of the first straight-through ball valve is connected with a hose assembly, the hose assembly is an air exhaust end, a right connector of the air exhaust connector is connected with the left end of a second straight-through ball valve, and the right end of the second straight-through ball valve is a pressure relief opening.

Description

Technical Field

[0001] The utility model belongs to the technical field of test devices, and particularly relates to a vacuum pumping test device. Background Art

[0002] Vacuum pumping inspection is a conventional operation for sealing inspection of underwater vehicles, etc., and the vacuum pumping inspection needs to be completed through a device, and through it, the sealing inspection work can be completed quickly and efficiently.

[0003] The existing vacuum pumping test devices are clumsy in design, various in forms, without a unified standard, and the interface forms are diverse, including those with 74° conical seals and those with radial O-ring seals, resulting in high processing costs and difficult operation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a vacuum pumping test device, which is used to solve the technical problems of clumsy design and complex use of the existing vacuum pumping test devices.

[0005] The utility model is realized by adopting the following technical scheme:

[0006] A vacuum pumping test device includes an air extraction joint, the air extraction joint is provided with four interfaces, namely upper, lower, left and right interfaces, the interiors of the four interfaces are mutually communicated, a pressure gauge is connected to the upper interface of the air extraction joint, the lower interface of the air extraction joint can be inserted into a component to be inspected, the left interface of the air extraction joint is connected to the right end of a straight-through ball valve I, the left end of the straight-through ball valve I is connected to a hose assembly, the hose assembly is the air extraction end, the right interface of the air extraction joint is connected to the left end of a straight-through ball valve II, and the right end of the straight-through ball valve II is a pressure relief port.

[0007] During application, first insert the lower interface of the device into the vacuum pumping hole of the component to be inspected, connect the hose assembly to a vacuum pump, rotate the handle of the straight-through ball valve II to be perpendicular to the hose assembly, at this time the pressure relief port is in a closed state, and then rotate the handle of the straight-through ball valve I to be parallel to the hose assembly, and the equipment before vacuum pumping inspection is completed.

[0008] Then start the vacuum pumping operation of the component by turning on the vacuum pump, observe the indication value of the pressure gauge, when the indication value of the pressure gauge reaches the required value, rotate the handle of the straight-through ball valve I to be perpendicular to the hose assembly, at this time the air extraction end is closed, and the pressure holding starts.

[0009] Finally, after the vacuum pumping test is completed, rotate the handle of the straight-through ball valve II to a position parallel to the hose assembly, start pressure relief, and after the pressure is relieved, disassemble the device from the component.

[0010] Further preferably, the upper interface of the air extraction joint is a standard interface for a pressure gauge. A rubber pad is fixed at the connection between the pressure gauge and the upper interface of the air extraction joint, which is conducive to quickly replacing the pressure gauge. The rubber pad is added to increase the sealing performance of the device.

[0011] Further preferably, the lower interface of the air extraction joint is provided with two stepped circular steps. The circular step with a smaller diameter is longer than the circular step with a larger diameter, avoiding the risk of fracture caused by large root stress due to the direct reduction of the diameter of the lower interface.

[0012] Further preferably, a sealing ring is sleeved on the outer periphery of the circular step with a smaller diameter of the air extraction joint. The sealing ring is used to increase the sealing performance of the device.

[0013] Further preferably, it further includes an adapter. Both ends of the adapter are provided with hollow external threads. The left end of the straight-through ball valve 1 is connected to the right end of the adapter by threads. The left end of the adapter is connected with a quick connector 3 by threads. The hose assembly includes a quick connector 1. The quick connector 1 is connected to a straight-through connector 1. The straight-through connector 1 is connected to the right end of the rubber hose assembly. The left end of the rubber hose assembly is connected to a straight-through connector 2. The straight-through connector 2 is connected to a quick connector 2. The quick connector 3 and the quick connector 1 are quickly inserted and connected. By providing the adapter, the quick connector 1 and the quick connector 3 in the prior art can be utilized. Through the cooperation of the quick connector 1 and the quick connector 3, the use of this device can be made more convenient. Through the conversion of the straight-through connector 1 and the straight-through connector 2, the quick connector 1 and the quick connector 2 can be connected to the rubber hose assembly together.

[0014] Further preferably, it further includes welding heads. The number of welding heads is two. One side of each welding head is provided with a hollow external thread. One welding head is welded to each of the left and right joints of the air extraction joint. Both the straight-through ball valve 1 and the straight-through ball valve 2 are internal-thread straight-through ball valves. The two welding heads are respectively connected to the straight-through ball valve 1 and the straight-through ball valve 2 by threads. By providing the welding heads, the straight-through ball valve 1 and the straight-through ball valve 2 can be made into detachable structures. If they are damaged, the straight-through ball valve 1 and the straight-through ball valve 2 can be quickly replaced.

[0015] Further preferably, the cross-section of the air extraction joint is a regular hexagon, and the whole is in the shape of a hexagonal prism.

[0016] The present utility model provides a device for a vacuum pumping test. The device has a simple structure, low cost, short manufacturing cycle, and is convenient to use. With this device, the vacuum pumping tests of various components can be easily and quickly completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative work, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It represents one of the structural schematic diagrams of the present invention.

[0020] Figure 2 It represents the second structural schematic diagram of the present invention.

[0021] Figure 3 It represents the connection schematic diagram of the present invention and the component to be tested.

[0022] In the figure: 1 - air extraction joint, 11 - rubber pad, 12 - sealing ring, 2 - pressure gauge, 3 - component to be tested, 4 - direct-through ball valve one, 5 - hose assembly, 51 - quick connector one, 52 - hose assembly, 53 - quick connector two, 54 - direct-through joint two, 55 - direct-through joint one, 6 - direct-through ball valve two, 7 - transition joint, 8 - welding joint, 9 - quick connector three. Specific embodiments

[0023] In order to more clearly understand the above-mentioned objects, features, and advantages of the present invention, the following will further describe the solutions of the present invention. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be noted that unless otherwise clearly defined 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0026] The following will specifically describe the embodiments of the present invention in conjunction with the drawings.

[0027] A vacuum pumping test device includes an air extraction joint 1. The air extraction joint 1 is provided with four interfaces, namely upper, lower, left and right. The interiors of the four interfaces communicate with each other. The upper interface of the air extraction joint 1 is connected to a pressure gauge 2. The lower interface of the air extraction joint 1 can be inserted into the component 3 to be tested. The left interface of the air extraction joint 1 is connected to the right end of a direct-through ball valve 1 4. The left end of the direct-through ball valve 1 4 is connected to a hose assembly 5. The hose assembly 5 is the air extraction end. The right interface of the air extraction joint 1 is connected to the left end of a direct-through ball valve 2 6. The right end of the direct-through ball valve 2 6 is the pressure relief port.

[0028] In this embodiment, the air extraction joint 1 is the central component of the entire device. The air extraction joint 1 is generally in the shape of a hexagonal prism. The upper joint is at the top of the hexagonal prism, the lower interface is at the lower part of the hexagonal prism, and the left and right interfaces are arranged in the middle. The upper interface is used to connect a precision pressure vacuum gauge. The upper interface of the air extraction joint 1 is a standard interface (M20×1.5-7H) of the pressure gauge 2. A rubber gasket 11 is fixed at the connection between the pressure gauge 2 and the upper interface of the air extraction joint 1.

[0029] The lower interface of the air extraction joint 1 is provided with two stepped circular steps. The circular step with a smaller diameter is longer than the circular step with a larger diameter. An O-ring 12 is sleeved on the outer periphery of the circular step with a smaller diameter of the air extraction joint 1. Specifically, the lower interface is a φ14 male quick-insert structure design, and the lower interface is the interface for connecting with the component 3 to be tested.

[0030] It further includes an adapter joint 7. Both ends of the adapter joint 7 are provided with hollow external threads. The left end of the direct-through ball valve 1 4 is connected to the right end of the adapter joint 7 through threads. The left end of the adapter joint 7 is connected with a quick connector 3 9 through threads; The hose assembly 5 includes a quick connector 1 51. The quick connector 1 51 is connected to a straight connector 1 55. The straight connector 1 55 is connected to the right end of a hose assembly 52. The left end of the hose assembly 52 is connected to a straight connector 2 54. The straight connector 2 54 is connected to a quick connector 2 53. The quick connector 3 9 and the quick connector 1 51 are connected by quick insertion. Specifically, the quick connector 1 51 is a female head, the quick connector 2 53 is a male head, and the quick connector 3 9 is a male head. Both the air extraction joint 1 and the adapter joint 7 are made of stainless steel, which can play a good role in rust prevention and corrosion protection. The length of the hose assembly 52 can be selected according to needs. In this embodiment, it is 3m.

[0031] It further includes welding joints 8. The number of welding joints 8 is two. One side of the welding joint 8 is provided with a hollow external thread. One welding joint 8 is welded to each of the left and right joints of the air extraction joint 1. Both the direct-through ball valve 1 4 and the direct-through ball valve 2 6 are internal thread direct-through ball valves (DN8 ZG1 / 2〃). The two welding joints 8 are respectively connected to the direct-through ball valve 1 4 and the direct-through ball valve 2 6 through threads.

[0032] The working principle is as follows:

[0033] When in use, as Figure 3As shown in the figure, first directly insert the lower interface of the device into the vacuum hole of the component 3 to be tested. If the vacuum hole of the component 3 to be tested does not match the lower interface of the device, a adapter can be added to solve the problem.

[0034] Then rotate the handle of the straight-through ball valve II 6 so that the handle is perpendicular to the axis of the straight-through ball valve II 6. At this time, the pressure relief port is closed; rotate the handle of the straight-through ball valve I 4 so that it is parallel to the axis of the straight-through ball valve I 4. At this time, the vacuum pump connection end is opened; then connect the quick connector II 53 (male head) at the other end of the hose assembly 5 to the vacuum pump. At this time, the preparation before the vacuum pumping inspection is completed.

[0035] Finally, turn on the vacuum pump switch to perform the vacuum pumping operation on the component.

[0036] The specific operation is as follows: Observe the indication value of the vacuum pressure gauge. When the required value is reached, rotate the handle of the straight-through ball valve I 4 to close the air extraction end, and then keep the pressure. After the vacuum pumping test is completed, rotate the handle of the straight-through ball valve II 6 to a direction parallel to the device to start pressure relief. After the pressure is released, disassemble the vacuum pumping device from the component, and the test process ends.

[0037] The utility model has the advantages of simple structure, low manufacturing cost, convenient operation, and is not restricted by the structure of the component 3 to be tested. It can effectively complete the vacuum pumping tests of various components. At present, it has been widely used in various models of underwater vehicles, meeting the use requirements of products, greatly reducing the workload and working intensity; the connection end with the component to be tested adopts a φ14 female and male head quick-insert structure design, which is reliable and quick to connect; it can also be popularized and applied in other fields such as aviation, etc., and has high social and military benefits.

[0038] The above are only specific embodiments of the utility model, enabling those skilled in the art to understand or implement the utility model. Although the above embodiments have been described in detail, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the above embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A vacuum pumping test device, characterized in that: It includes an air extraction joint (1). The air extraction joint (1) is provided with four interfaces, namely upper, lower, left and right. The interiors of the four interfaces communicate with each other. The upper interface of the air extraction joint (1) is connected to a pressure gauge (2). The lower interface of the air extraction joint (1) can be inserted into the component to be tested (3). The left interface of the air extraction joint (1) is connected to the right end of a direct-through ball valve I (4). The left end of the direct-through ball valve I (4) is connected to a hose assembly (5). The hose assembly (5) is the air extraction end. The right interface of the air extraction joint (1) is connected to the left end of a direct-through ball valve II (6). The right end of the direct-through ball valve II (6) is the pressure relief port.

2. The vacuum testing device according to claim 1, characterized in that: The upper interface of the air extraction joint (1) is a standard interface for the pressure gauge (2). A rubber gasket (11) is fixed at the connection between the pressure gauge (2) and the upper interface of the air extraction joint (1).

3. The vacuum test device according to claim 1, characterized in that: The lower interface of the air extraction joint (1) is provided with two stepped circular steps, and the circular step with a smaller diameter is longer than the circular step with a larger diameter.

4. The vacuum test device according to claim 3, wherein: A sealing ring (12) is sleeved on the outer periphery of the circular step with a smaller diameter of the air extraction joint (1).

5. A vacuum pumping test device according to claim 1, characterized in that: It further includes an adapter (7). Both ends of the adapter (7) are provided with hollow external threads. The left end of the direct-through ball valve I (4) is connected to the right end of the adapter (7) by threads. The left end of the adapter (7) is connected to a quick connector III (9) by threads. The hose assembly (5) includes a quick connector I (51). The quick connector I (51) is connected to a straight-through connector I (55). The straight-through connector I (55) is connected to the right end of a rubber hose assembly (52). The left end of the rubber hose assembly (52) is connected to a straight-through connector II (54). The straight-through connector II (54) is connected to a quick connector II (53). The quick connector III (9) is quickly inserted and connected to the quick connector I (51).

6. The vacuum pumping test device according to claim 1, characterized in that: It further includes welding joints (8). The number of the welding joints (8) is two. One side of each welding joint (8) is provided with a hollow external thread. One welding joint (8) is welded to each of the left and right joints of the air extraction joint (1). Both the direct-through ball valve I (4) and the direct-through ball valve II (6) are internal thread direct-through ball valves. The two welding joints (8) are respectively connected to the direct-through ball valve I (4) and the direct-through ball valve II (6) by threads.

7. A vacuum pumping test device according to any one of claims 1-6, characterized in that: The cross-section of the air extraction joint (1) is a regular hexagon, and the whole is in the shape of a hexagonal prism.

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