A double-layer sealing plugging mechanism for sealing detection

Abstract

The utility model discloses a double-layer sealing plugging mechanism for sealing detection, comprising: a plugging head, a plugging fixing seat, a plugging connecting seat and a plugging base, the plugging head is installed on the plugging fixing seat, the plugging fixing seat is installed on the plugging connecting seat, the plugging connecting seat is installed on the plugging base, an end face sealing ring is arranged on the upper end face of the plugging head, a radial sealing ring is sleeved on the plugging fixing seat, a ventilation channel is opened between the end face sealing ring and the radial sealing ring, a first channel is opened through the plugging head, a second channel is opened through the plugging fixing seat, a first connecting port and a second connecting port are opened on the plugging base, the first connecting port is connected with the ventilation channel, and the second connecting port is connected with the second channel; through the above method, the utility model can perform more effective sealing on the workpiece through double-layer plugging, and at the same time can avoid the influence of the gap between the double-layer plugging on the detection result.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing detection, in particular to a double-layer sealing and plugging mechanism for sealing detection. Background Art

[0002] When conducting air tightness testing, a sealing mechanism is usually used to seal the workpiece so that there is a closed space inside the workpiece, and the closed space is inflated. During the testing process, the closed space inside the workpiece is usually evacuated in a vacuum environment and then filled with a test gas, such as helium. The helium concentration is measured in the vacuum environment outside the workpiece to determine whether the workpiece has leakage. Some workpieces with extremely high air tightness requirements also have high requirements for the sealing of the plugging.

[0003] At present, although there are some double-layer or multi-layer sealing and plugging mechanisms, the gaps between the layers of plugging in these mechanisms will have a certain impact when the workpiece is vacuumed and filled with helium. The gaps between the layers of plugging will cause incomplete vacuuming of the workpiece, or there will be a certain amount of residual helium in the gaps, which will affect the testing of the workpiece. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a double-layer sealing plugging mechanism for sealing detection, which can more effectively seal the workpiece through the double-layer plugging and at the same time avoid the influence of the gap between the double-layer plugging on the detection result.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a double-layer sealing plugging mechanism for sealing detection, including: a sealing head, a sealing fixing seat, a sealing connecting seat and a sealing base, the sealing head is installed on the sealing fixing seat, the sealing fixing seat is installed on the sealing connecting seat, the sealing connecting seat is installed on the sealing base, an end face sealing ring is arranged on the upper end face of the sealing head, a radial sealing ring is sleeved on the sealing fixing seat, a ventilation channel is opened between the end face sealing ring and the radial sealing ring, a first channel is opened through the sealing head, a second channel is opened through the sealing fixing seat, a first connecting port and a second connecting port are opened on the sealing base, the first connecting port is connected to the ventilation channel, and the second connecting port is connected to the second channel.

[0006] Preferably, an internal sealing ring and a sealing ring pressure ring are provided between the lower end of the plugging head and the plugging fixing seat, the sealing ring pressure ring forces the internal sealing ring to deform, and the internal sealing ring seals between the plugging head and the plugging fixing seat.

[0007] Preferably, a first fixed seat sealing ring is provided between the blocking fixed seat and the blocking connecting seat, and the first fixed seat sealing ring is used to seal the gap between the blocking fixed seat and the blocking connecting seat.

[0008] Preferably, a connection seat sealing ring is provided between the sealing connection seat and the sealing base, and the connection seat sealing ring is used to seal the gap between the sealing connection seat and the sealing base.

[0009] Preferably, a second fixed seat sealing ring is provided between the sealing fixed seat and the sealing base, and the second fixed seat sealing ring is used to seal the gap between the sealing fixed seat and the sealing base.

[0010] Preferably, a clamp is provided on the blocking connecting seat, the clamp is connected to the blocking fixing seat, and the clamp is used to fix the blocking fixing seat on the blocking connecting seat.

[0011] Preferably, the ventilation channel includes a first ventilation channel, a second ventilation channel and a third ventilation channel which are interconnected, the first ventilation channel is opened on the sealing head, the second ventilation channel is opened on the sealing fixing seat, the third ventilation channel is opened on the sealing connecting seat, and the third ventilation channel is connected to the first connecting port.

[0012] The beneficial effects of the utility model are:

[0013] 1. A ventilation channel is opened between the end face sealing ring and the radial sealing ring, and the ventilation channel is connected to the first connection port of the plugging base, so that the space between the end face sealing ring and the radial sealing ring is evacuated by an evacuation pump, thereby avoiding residual detection gas between the plugging layers and affecting the detection results;

[0014] 2. The vacuum pump can evacuate the interior of the workpiece through the first channel and the second channel, and can fill the workpiece with detection gas through the first channel and the second channel to detect the sealing of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the utility model when it is matched with a workpiece;

[0016] Figure 2 It is a cross-sectional view of the utility model without the blocking base;

[0017] Figure 3 It is a three-dimensional diagram of the utility model without the blocking base;

[0018] Figure 4 It is a schematic diagram of the overall structure of the utility model.

[0019] The markings of the components in the accompanying drawings are as follows:

[0020] 1. Sealing head; 11. End face sealing ring; 12. First channel;

[0021] 2. Blocking fixed seat; 21. Radial sealing ring; 22. Second channel; 23. First fixed seat sealing ring;

[0022] 24. Second fixed seat sealing ring;

[0023] 3. Sealing connection seat; 31. Sealing ring of connection seat; 32. Clamp;

[0024] 4. Blocking base; 41. First connection port; 42. Second connection port;

[0025] 51, first ventilation channel; 52, second ventilation channel; 53, third ventilation channel;

[0026] 6. Internal sealing ring; 7. Sealing ring pressure ring; 8. Workpiece. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0033] Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0034] Example:

[0035] refer to Figure 1-Figure 4A double-layer sealing plugging mechanism for sealing detection includes: a plugging head 1, a plugging fixed seat 2, a plugging connecting seat 3 and a plugging base 4. The plugging head 1 is mounted on the plugging fixed seat 2, the plugging fixed seat 2 is mounted on the plugging connecting seat 3, a first fixed seat sealing ring 23 is mounted between the plugging fixed seat 2 and the plugging connecting seat 3, the first fixed seat sealing ring 23 can be sleeved on the plugging fixed seat 2, and the first fixed seat sealing ring 23 is used to seal the gap between the plugging fixed seat 2 and the plugging connecting seat 3. The plugging connecting seat 3 is mounted on the plugging base 4, a connecting seat sealing ring 31 is mounted between the plugging connecting seat 3 and the plugging base 4, the connecting seat sealing ring 31 can be sleeved on the plugging connecting seat 3, and the connecting seat sealing ring 31 is used to seal the gap between the plugging connecting seat 3 and the plugging base 4. The lower end of the sealing fixed seat 2 is in contact with the sealing base 4, so a second fixed seat sealing ring 24 is installed between the sealing fixed seat 2 and the sealing base 4. The second fixed seat sealing ring 24 can be sleeved on the lower end of the sealing fixed seat 2 in contact with the sealing base 4. The second fixed seat sealing ring 24 is used to seal the gap between the sealing fixed seat 2 and the sealing base 4.

[0036] refer to Figure 1-Figure 4 An end face sealing ring 11 is installed on the upper end face of the plugging head 1, and the end face sealing ring 11 contacts the inner hole with a step inside the workpiece 8, thereby performing the first layer of plugging and sealing on the workpiece 8. A radial sealing ring 21 is sleeved on the plugging fixed seat 2, and the radial sealing ring 21 contacts the inner wall of the workpiece 8, thereby performing the second layer of plugging and sealing on the workpiece 8. A ventilation channel is opened between the end face sealing ring 11 and the radial sealing ring 21, and a first channel 12 is opened through the plugging head 1, and a second channel 22 is opened through the plugging fixed seat 2. A first connecting port 41 and a second connecting port 42 are opened on the plugging base 4, and the first connecting port 41 is connected to the ventilation channel, and the second connecting port 42 is connected to the second channel 22. The vacuum pump is connected to the first connecting port 41, so that the space between the end face sealing ring 11 and the radial sealing ring 21 is evacuated through the first connecting port 41. The evacuation pump is connected to the second connection port 42, so as to evacuate the internal space of the workpiece 8 through the second connection port 42. The evacuation pump can be controlled by the control valve to evacuate the space between the end face sealing ring 11 and the radial sealing ring 21 after evacuating the internal space of the workpiece 8.

[0037] refer to Figure 1 and Figure 2 An internal sealing ring 6 and a sealing ring pressing ring 7 are arranged between the lower end of the plugging head 1 and the plugging fixed seat 2. The sealing ring pressing ring 7 forces the internal sealing ring 6 to deform, and the internal sealing ring 6 seals between the plugging head 1 and the plugging fixed seat 2 to prevent the detection gas from leaking. The sealing ring pressing ring 7 acts as a gasket to enable the internal sealing ring 6 to deform with the plugging head 1 to produce a sealing effect.

[0038] refer to Figure 1 and Figure 2 In order to stabilize the position of the end face sealing ring 11, a sealing ring groove matching with the end face sealing ring 11 can be opened on the upper end face of the plugging head 1. Similarly, a sealing groove matching with the radial sealing ring 21, a sealing groove matching with the first fixed seat sealing ring 23, and a sealing groove matching with the second fixed seat sealing ring 24 can also be opened on the plugging fixed seat 2. A sealing groove matching with the connecting seat sealing ring 31 can also be opened on the plugging connecting seat 3.

[0039] refer to Figure 1 and Figure 2 A clamp 32 is installed on the blocking connection seat 3 , and the clamp 32 is connected to the blocking fixing seat 2 . The clamp 32 is used to fix the blocking fixing seat 2 in the blocking connection seat 3 .

[0040] refer to Figure 1 and Figure 2 The ventilation channel includes a first ventilation channel 51, a second ventilation channel 52 and a third ventilation channel 53 which are interconnected. The first ventilation channel 51 is opened on the plugging head 1, the second ventilation channel 52 is opened on the plugging fixing seat 2, and the third ventilation channel 53 is opened on the plugging connecting seat 3. The third ventilation channel 53 is connected to the first connecting port 41.

[0041] refer to Figure 1 and Figure 2 , through the first fixed seat sealing ring 23, the fixed seat 2 and the connecting seat 3 are sealed, so that the ventilation channel is kept in a sealed state. Through the second fixed seat sealing ring 21, the fixed seat 2 and the blocking base 4 are sealed, so that the first channel 12 and the second channel 22 are in a sealed state. Through the connecting seat sealing ring 31, the entire blocking base 4 and the connecting seat 3 are sealed, so that the entire blocking mechanism is in a sealed state. The direct sealing of the components produced in this way makes the entire mechanism only have the ventilation channel, the first channel 12, the second channel 22, and two first connecting ports 41 and the second connecting ports 42 connected to the outside, thereby achieving the purpose of eliminating the influence of the area between the end face sealing ring 11 and the radial sealing ring 21 on the test results of the workpiece 8, without affecting the rhythm of evacuating and filling the workpiece 8 with detection gas.

[0042] Operation process: put the sealing mechanism into the hole to be sealed in the workpiece 8, apply pressure to the other side of the workpiece 8, so that the end face of the inner hole with a step inside the workpiece 8 is tightly fitted with the end face sealing ring 11, and at the same time, the inner wall at the lower end of the inner hole of the workpiece 8 is tightly fitted with the radial sealing ring 21. Under the action of the end face sealing ring 11 and the radial sealing ring 21, there is a gap space between the end face sealing ring 11 and the radial sealing ring 21, and the gap space is connected to the ventilation channel, so that under the action of the vacuum pump, the inside of the workpiece 8 is evacuated through the second connecting port 42, the second channel 22, and the first channel 12, and at the same time, the vacuum pump is used to evacuate the gap space between the end face sealing ring 11 and the radial sealing ring 21 through the first connecting port 41, the third ventilation hole, the second ventilation hole, and the first ventilation hole, so as to achieve the emptying of the residual gas between the double-layer sealing. Then, a detection gas, such as helium, is filled into the workpiece 8 through the second connecting port 42 , the second channel 22 , and the first channel 12 , and then the helium concentration is measured in the vacuum environment outside the workpiece 8 to determine whether the workpiece 8 has a leak.

[0043] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A double-layer sealing and plugging mechanism for sealing detection, characterized in that: include: A plugging head (1), a plugging fixing seat (2), a plugging connecting seat (3) and a plugging base (4), wherein the plugging head (1) is mounted on the plugging fixing seat (2), the plugging fixing seat (2) is mounted on the plugging connecting seat (3), and the plugging connecting seat (3) is mounted on the plugging base (4); an end face sealing ring (11) is arranged on the upper end face of the plugging head (1), a radial sealing ring (21) is sleeved on the plugging fixing seat (2), a ventilation channel is provided between the end face sealing ring (11) and the radial sealing ring (21), a first channel (12) is provided through the plugging head (1), a second channel (22) is provided through the plugging fixing seat (2), and a first connecting port (41) and a second connecting port (42) are provided on the plugging base (4), the first connecting port (41) is communicated with the ventilation channel, and the second connecting port (42) is communicated with the second channel (22).

2. A double-layer sealing and plugging mechanism for sealing detection according to claim 1, characterized in that: An internal sealing ring (6) and a sealing ring pressure ring (7) are provided between the lower end of the plugging head (1) and the plugging fixing seat (2); the sealing ring pressure ring (7) forces the internal sealing ring (6) to deform; and the internal sealing ring (6) is used to seal between the plugging head (1) and the plugging fixing seat (2).

3. A double-layer sealing and plugging mechanism for sealing detection according to claim 1, characterized in that: A first fixed seat sealing ring (23) is provided between the blocking fixed seat (2) and the blocking connecting seat (3), and the first fixed seat sealing ring (23) is used to seal the gap between the blocking fixed seat (2) and the blocking connecting seat (3).

4. A double-layer sealing and plugging mechanism for sealing detection according to claim 1, characterized in that: A connection seat sealing ring (31) is provided between the sealing connection seat (3) and the sealing base (4), and the connection seat sealing ring (31) is used to seal the gap between the sealing connection seat (3) and the sealing base (4).

5. A double-layer sealing and plugging mechanism for sealing detection according to claim 1, characterized in that: A second fixing seat sealing ring (24) is provided between the blocking fixing seat (2) and the blocking base (4), and the second fixing seat sealing ring (24) is used to seal the gap between the blocking fixing seat (2) and the blocking base (4).

6. A double-layer sealing and plugging mechanism for sealing detection according to claim 1 or 3, characterized in that: The plugging connection seat (3) is provided with a clamp (32), the clamp (32) is connected to the plugging fixing seat (2), and the clamp (32) is used to fix the plugging fixing seat (2) on the plugging connection seat (3).

7. A double-layer sealing and plugging mechanism for sealing detection according to any one of claims 1 to 5, characterized in that: The ventilation channel comprises a first ventilation channel (51), a second ventilation channel (52) and a third ventilation channel (53) which are interconnected, wherein the first ventilation channel (51) is provided on the plugging head (1), the second ventilation channel (52) is provided on the plugging fixing seat (2), the third ventilation channel (53) is provided on the plugging connecting seat (3), and the third ventilation channel (53) is connected to the first connecting port (41).

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