Leak detection device and leak detection tool

Abstract

The utility model discloses a leak detection device and a leak detection tool. The leak detection device comprises a first joint, a first detection mechanism, a second joint and a second detection mechanism. The first connector is provided with a first connecting end and a second connecting end which are communicated with each other, and the first connecting end is connected with a to-be-detected piece; the first detection mechanism is detachably connected with the second connection end; the second connector is provided with a third connecting end and a fourth connecting end which are communicated with each other, and the third connecting end is detachably connected to the second connecting end; and the second detection mechanism is detachably connected with the fourth connecting end. And connecting a first detection mechanism with the second connection end of the first joint, and carrying out air tightness detection on the to-be-detected piece through the first detection mechanism. Or the third connecting end can be connected with the second connecting end, then the second detection mechanism is connected with the fourth connecting end, and air tightness detection is performed on the to-be-detected piece through the second detection mechanism. And when the detection mechanism is switched for detection, only the second joint needs to be connected or dismounted, so that the efficiency is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of air tightness detection equipment, and specifically relates to a leak detection device and a leak detection tool. Background Art

[0002] At present, most of the domestic polysilicon manufacturers use CVD reduction furnaces. The working principle of the reduction furnace is to heat the silicon core so that the mixed gas of trichlorosilane and hydrogen reacts to generate polysilicon and deposit it on the silicon core. The silver electrode body is the electrode of the reduction furnace, which is mainly made by combining oxygen-free copper and pure silver. The silver electrode body needs to be welded during the preparation process, and an airtightness test is required after the welding is completed to detect whether there is a cold weld during the welding process. The existing airtightness test usually selects the corresponding detection equipment according to the joints on the silver electrode body. The detection method is relatively single. If a different method is used for airtightness detection, the original joint needs to be removed and another joint needs to be installed. The process is relatively cumbersome and inefficient. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing different air tightness detection methods for the parts to be detected are inefficient. In order to solve this technical problem, a leak detection device and leak detection tooling that can use different air tightness detection methods and have high efficiency are provided.

[0004] The technical solution proposed by the utility model is:

[0005] A leak detection device, comprising:

[0006] A first connector, having a first connecting end and a second connecting end that are interconnected, wherein the first connecting end is used to connect to a to-be-detected component;

[0007] A first detection mechanism, detachably connected to the second connection end;

[0008] A second connector having a third connection end and a fourth connection end that are interconnected, wherein the third connection end is detachably connected to the second connection end; and

[0009] The second detection mechanism is detachably connected to the fourth connection end, and both the first detection mechanism and the second detection mechanism can perform airtightness detection on the part to be detected.

[0010] Furthermore, the leak detection device also includes a connecting component, which is sealed and connected to the part to be detected, and the connecting component has a detection port connected to the part to be detected, and the first connecting end is sealed and connected to the connecting component and connected to the detection port.

[0011] Further, the connecting component includes a first connecting member and a second connecting member, the first connecting member is connected to the member to be detected, the second connecting member is connected to the first connecting member, and the second connecting member is in sealing contact with the member to be detected, the second connecting member is provided with the detection port, and the first connecting end is sealingly connected to the second connecting member.

[0012] Furthermore, the connection component also includes a sealing member, a sealing groove is opened on one side of the second connection member, the sealing groove is arranged around the detection port, the sealing member is arranged in the sealing groove, and the sealing member is in sealing contact with the to-be-detected member.

[0013] Furthermore, the first connecting member is penetrated by a connecting port, and the connecting port includes a connecting section and a guide section that are interconnected. The connecting section is used to connect with the part to be detected, and the guide section is located at one end of the connecting section away from the second connecting member. The radial dimension of the guide section gradually increases from one end connected to the connecting section to the other end opposite thereto.

[0014] Furthermore, the connection assembly also includes a locking member, and the locking member is connected to the first connection member and the second connection member to fix the first connection member and the second connection member.

[0015] Furthermore, the first detection mechanism is a helium detector.

[0016] Furthermore, the second detection mechanism includes a connecting tube and a pressure detector, one end of the connecting tube is detachably connected to the fourth connecting end, and the other end is connected to the pressure detector.

[0017] Furthermore, the leak detection device also includes a connecting sleeve and a fastener, the connecting sleeve is detachably connected to the second connecting end and the third connecting end, and the fastener is detachably arranged on the outside of the connecting sleeve to press and fix the connecting sleeve to the outer surface of the second connecting end.

[0018] A leak detection tool, comprising:

[0019] A connecting component is sealed and connected to the part to be detected, and the connecting component has a detection port communicating with the part to be detected;

[0020] A first connector, comprising a first connecting end and a second connecting end which are connected to each other, wherein the first connecting end is sealedly connected to the connecting assembly and is connected to the detection port, and the second connecting end can be detachably connected to the first detection mechanism;

[0021] The second connector has a third connection end and a fourth connection end which are interconnected. The third connection end is detachably connected to the second connection end, and the fourth connection end can be detachably connected to the second detection mechanism.

[0022] By using the above-mentioned leak detection device, the first joint is connected to the part to be detected, and then the first detection mechanism can be connected to the second connection end of the first joint, so that the air tightness test of the part to be detected is performed through the first detection mechanism. The third connection end of the second joint can also be connected to the second connection end, and then the second detection mechanism is connected to the fourth connection end of the second joint, so that the air tightness test of the part to be detected is performed through the second detection mechanism. When switching the detection mechanism for detection, it is only necessary to connect or remove the second joint, which is simple to operate and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0024] Figure 1 A schematic diagram of the application structure of a leak detection tool provided in one embodiment of the utility model;

[0025] Figure 2 for Figure 1 A partial structural schematic diagram of the leak detection tool shown;

[0026] Figure 3 for Figure 1 The schematic diagram of the partial cross-section structure of the leak detection tool and the part to be detected is shown.

[0027] Description of labels:

[0028] 100. Leak detection tool; 200. Part to be detected; 110. First joint; 120. Second joint; 111. First connecting end; 112. Second connecting end; 121. Third connecting end; 122. Fourth connecting end; 130. First connecting member; 140. Second connecting member; 141. Inspection port; 150. Sealing member; 142. Sealing groove; 160. Locking member; 131. Connecting port; 132. Connecting section; 133. Guide section; 170. Connecting sleeve; 180. Fastener. DETAILED DESCRIPTION

[0029] 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.

[0030] 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" 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.

[0031] The utility model provides a leak detection device, which includes a leak detection tool 100 (see Figure 1 ) and the first detection mechanism and the second detection mechanism, the leak detection tool 100 is used with the to-be-detected part 200 (see Figure 1 ), the first detection mechanism and the second detection mechanism can both be connected to the leak detection tool 100, so as to realize the air tightness detection of the mechanism to be detected. It can be understood that the first detection mechanism and the second detection mechanism are different detection mechanisms, such as a helium detector and a pressure-maintaining detection mechanism.

[0032] It should be noted that, in this embodiment, the part to be detected 200 is a silver electrode body. Of course, in other embodiments, the part to be detected 200 can also be other products. The part to be detected 200 has an interface, and the leak detection tool 100 can be connected to the interface of the part to be detected 200 and communicate with the interface.

[0033] See also Figures 1 to 3 Further, the leak detection tool 100 includes a first joint 110 and a second joint 120. The first joint 110 has a first connection end 111 and a second connection end 112 that are interconnected. The first connection end 111 is used to connect to the to-be-detected component 200, and the second connection end 112 is detachably connected to the first detection mechanism. The second joint 120 has a third connection end 121 and a fourth connection end 122 that are interconnected. The third connection end 121 is detachably connected to the second connection end 112, and the fourth connection end 122 is detachably connected to the second detection mechanism.

[0034] By using the above-mentioned leak detection device, the first joint 110 is connected to the part to be detected 200, and then the first detection mechanism can be connected to the second connection end 112 of the first joint 110, so that the first detection mechanism can be used to perform air tightness detection on the part to be detected 200. The third connection end 121 of the second joint 120 can also be connected to the second connection end 112, and then the second detection mechanism can be connected to the fourth connection end 122 of the second joint 120, so that the second detection mechanism can be used to perform air tightness detection on the part to be detected 200. When switching the detection mechanism for detection, it is only necessary to connect or remove the second joint 120, which is simple to operate and more efficient.

[0035] In this embodiment, the first detection mechanism is a helium detector, and the detection process is as follows: connect the helium detector to the second connection end 112, evacuate the interior of the part to be detected 200, and then purge the part to be detected 200 with helium, mainly purging the weld of the part to be detected 200. Because helium molecules are tiny, if helium enters the interior of the part to be detected 200 through the weld, the helium detector connected to the interior of the part to be detected 200 will alarm, indicating that there is a cold weld in the weld. The second detection mechanism is a pressure-maintaining detection mechanism, and the detection process is as follows: connect the second joint 120 to the first joint 110, and then connect the pressure detector to the fourth connection end 122, input compressed gas into the part to be detected 200, maintain the pressure for a period of time, and detect the internal pressure change of the part to be detected 200 through the pressure detector during the pressure-maintaining process, and judge the airtightness of the part to be detected 200 according to the pressure change.

[0036] In addition, it should be noted that, since the leak detection tool 100 can be connected to different detection mechanisms through the first joint 110 and the second joint 120, the applicability of the leak detection tool 100 is improved. At the same time, when there is no need to use different airtightness detection methods, the leak detection tool 100 has a high applicability, which effectively reduces the detection cost.

[0037] It needs to be further explained that, taking the first detection mechanism as a helium detector and the second detection mechanism as a pressure-maintaining detection mechanism as an example, when the leak detection tool 100 only has a first connector 110, that is, it can only be connected to a helium detector, if the manufacturer is only equipped with a pressure-maintaining detection mechanism, it is also necessary to purchase a helium detector additionally to realize the airtightness detection of the component 200 to be detected, and the detection cost is high.

[0038] It should be noted that the second detection mechanism includes a connecting tube and a pressure detector. One end of the connecting tube is detachably connected to the fourth connecting end 122 , and the other end is connected to the pressure detector, thereby achieving pressure-maintaining detection of the component 200 to be detected.

[0039] See also Figure 3In one embodiment, the leak detection tool 100 also includes a connecting component, which is sealed and connected to the part to be detected 200, and the connecting component has a detection port 141 connected to the part to be detected 200, and the first connecting end 111 is sealed and connected to the connecting component and connected to the detection port 141.

[0040] Furthermore, the connecting component includes a first connecting member 130 and a second connecting member 140, the first connecting member 130 is connected to the part to be detected 200, the second connecting member 140 is connected to the first connecting member 130, and the second connecting member 140 is in sealing contact with the part to be detected 200, the second connecting member 140 is provided with the above-mentioned detection port 141, the first connecting end 111 is sealedly connected to the second connecting member 140, so that the first joint 110 is sealedly connected to the part to be detected 200.

[0041] Furthermore, the connecting component also includes a sealing member 150. A sealing groove 142 is provided on one side of the second connecting member 140. The sealing groove 142 is arranged around the detection port 141. The sealing member 150 is arranged in the sealing groove 142, and the sealing member 150 is in sealing contact with the part to be detected 200, thereby sealing the detection port 141 connected to the part to be detected 200 to avoid leakage that affects the detection accuracy.

[0042] In practical applications, the first connection end 111 of the first connector 110 and the second connection member 140 can be sealed by welding, and the first connection end 111 can be inserted into the detection port 141, and then the outer wall of the first connection end 111 and the inner wall of the detection port 141 are welded to achieve a sealed connection between the two. In addition, optionally, the sealing member 150 is a rubber sealing ring.

[0043] In one embodiment, the connection assembly further includes a locking member 160, which is connected to the first connection member 130 and the second connection member 140 to fix the first connection member 130 and the second connection member 140. Further, one end of the locking member 160 passes through the second connection member 140 and is threadedly connected to the first connection member 130, and the other end abuts against a side surface of the second connection member 140 that is away from the first connection member 130, thereby locking and fixing the second connection member 140 and the first connection member 130.

[0044] In practical applications, the locking member 160 includes a plurality of locking members 160 to improve the stability of the connection between the first connecting member 130 and the second connecting member 140. Optionally, the locking member 160 is a screw.

[0045] In one embodiment, the first connecting member 130 is provided through the connecting port 131, and the connecting port 131 is connected to the to-be-detected member 200. Further, the connecting port 131 includes a connecting section 132 and a guide section 133 that are interconnected, the connecting section 132 is used to connect to the to-be-detected member 200, the guide section 133 is located at one end of the connecting section 132 away from the second connecting member 140, and the radial dimension of the guide section 133 gradually increases from one end connected to the connecting section 132 to the other end opposite thereto, so as to facilitate the to-be-detected member 200 to be inserted into the connecting port 131 and connected to the connecting section 132. Specifically, the connecting section 132 is provided with an internal thread to be threadedly connected to the to-be-detected member 200.

[0046] Specific to Figure 2 In the illustrated embodiment, the first connector 130 and the second connector 140 are both annular, and after the first connector 130 is threadedly connected to the interface of the part to be detected 200, the surface of the first connector 130 facing the second connector 140 is flush with the end face of the interface of the part to be detected 200. The second connector 140 is provided with the above-mentioned sealing groove 142 on one side facing the part to be detected 200, so that after the second connector 140 is connected to the first connector 130, the sealing member 150 in the sealing groove 142 is in sealing contact with the end face of the interface of the part to be detected 200. In addition, a plurality of locking members 160 are arranged at intervals along the circumference of the first connector 130 and the second connector 140, and are arranged at intervals around the interface of the part to be detected 200, so as to achieve the first connector 130 and the second connector 140 fixed to each other.

[0047] It can be understood that the first connecting member 130 and the second connecting member 140 are connected and fixed by the locking member 160, the first connecting member 130 is used to connect to the part to be detected 200, and the sealing between the connecting assembly and the part to be detected 200 is achieved by the second connecting member 140 and the sealing member 150.

[0048] In one embodiment, the leak detection device further includes a connecting sleeve 170 and a fastener 180, wherein the connecting sleeve 170 is detachably connected to the second connecting end 112 and the third connecting end 121, and the fastener 180 is detachably disposed on the outside of the connecting sleeve 170 to press and fix the connecting sleeve 170 to the outer surface of the second connecting end 112, thereby sealingly connecting the connecting sleeve 170 and the second connecting end 112. Optionally, the fastener 180 is a clamp.

[0049] Furthermore, the connecting sleeve 170 is threadedly connected to the third connecting end 121 , that is, the connecting sleeve 170 is provided with an internal thread, and the third connecting end 121 is provided with an external thread matching therewith.

[0050] In order to facilitate the understanding of the technical solution of the utility model, the first detection mechanism is a helium detector, and the second detection mechanism is a pressure-maintaining detection mechanism as an example. Figure 1 and Figure 2 The working process of the leak detection device in the above embodiment is described:

[0051] Initially, the first connector 130 is threadedly connected to the interface of the detected component 200, and then the second connector 140 is connected to the first connector 130 through the locking component 160, and the sealing component 150 in the sealing groove 142 abuts against the end surface of the interface of the detected component 200.

[0052] When the air tightness test is performed by the helium detector, the helium detector is connected to the second connection end 112, and then the vacuum is drawn inside the part to be tested 200. Next, helium is used to purge the weld of the part to be tested 200. If the helium detector detects helium, it means that the part to be tested 200 has a cold weld. Otherwise, it means that the weld does not have a cold weld. When the air tightness test is performed by the pressure-maintaining detection mechanism, the connecting sleeve 170 is connected to the second connection end 112 and the third connection end 121, and the connecting sleeve 170 is pressed and fixed to the outer surface of the second connection end 112 by the fastener 180, and the connecting pipe is connected to the fourth connection end 122, and the other end of the connecting pipe is connected to the pressure detector. Next, 0.7MPa of compressed air is input into the part to be tested 200, and the pressure is maintained for a period of time. During the pressure maintenance process, the pressure inside the part to be tested 200 is detected by the pressure detector, and it is judged whether the part to be tested 200 has a cold weld according to the change of the pressure detector. For example, if the value of the pressure detector decreases and the change range is large, it can be judged that the part to be tested 200 has a cold weld.

[0053] It is understandable that when the helium detector needs to be used for air tightness detection again, the fastener 180 and the connecting sleeve 170 are removed in sequence, and then the helium detector is connected to the second connecting end 112, which is easy to operate and efficient.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak detection device, characterized in that: include: A first connector, having a first connecting end and a second connecting end that are interconnected, wherein the first connecting end is used to connect to a to-be-detected component; A first detection mechanism, detachably connected to the second connection end; A second connector having a third connection end and a fourth connection end that are interconnected, wherein the third connection end is detachably connected to the second connection end; and The second detection mechanism is detachably connected to the fourth connection end, and both the first detection mechanism and the second detection mechanism can perform airtightness detection on the part to be detected.

2. The leak detection device according to claim 1, characterized in that: The leak detection device also includes a connecting component, which is sealed and connected to the part to be detected, and has a detection port communicated with the part to be detected. The first connecting end is sealed and connected to the connecting component and communicated with the detection port.

3. The leak detection device according to claim 2, characterized in that: The connecting component includes a first connecting member and a second connecting member, the first connecting member is connected to the member to be detected, the second connecting member is connected to the first connecting member, and the second connecting member is in sealing contact with the member to be detected, the second connecting member is provided with the detection port, and the first connecting end is sealingly connected to the second connecting member.

4. The leak detection device according to claim 3, characterized in that: The connection assembly further includes a sealing member. A sealing groove is formed on one side of the second connection member. The sealing groove is arranged around the detection port. The sealing member is arranged in the sealing groove, and the sealing member is in sealing contact with the to-be-detected member.

5. The leak detection device according to claim 3, characterized in that: The first connecting member is provided with a connecting port, which includes a connecting section and a guide section that are interconnected. The connecting section is used to connect with the part to be detected. The guide section is located at one end of the connecting section away from the second connecting member. The radial dimension of the guide section gradually increases from one end connected to the connecting section to the other end opposite thereto.

6. The leak detection device according to claim 3, characterized in that: The connection assembly further includes a locking member, and the locking member is connected to the first connection member and the second connection member to fix the first connection member and the second connection member.

7. The leak detection device according to claim 1, characterized in that: The first detection mechanism is a helium detector.

8. The leak detection device according to claim 1, characterized in that: The second detection mechanism includes a connecting tube and a pressure detector. One end of the connecting tube is detachably connected to the fourth connecting end, and the other end is connected to the pressure detector.

9. The leak detection device according to claim 1, characterized in that: The leak detection device also includes a connecting sleeve and a fastener, wherein the connecting sleeve is detachably connected to the second connecting end and the third connecting end, and the fastener is detachably arranged on the outside of the connecting sleeve to press and fix the connecting sleeve to the outer surface of the second connecting end.

10. A leak detection tool, characterized in that: include: A connecting component is sealed and connected to the part to be detected, and the connecting component has a detection port communicating with the part to be detected; A first connector, comprising a first connecting end and a second connecting end which are connected to each other, wherein the first connecting end is sealedly connected to the connecting assembly and is connected to the detection port, and the second connecting end can be detachably connected to the first detection mechanism; The second connector has a third connection end and a fourth connection end which are interconnected. The third connection end is detachably connected to the second connection end, and the fourth connection end can be detachably connected to the second detection mechanism.

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