Leakage detection mechanism for sensor assembly

Abstract

The utility model discloses a leak hunting mechanism for sensor assembly. The leak hunting mechanism comprises a rack, a feeding mechanism and a nitrogen cylinder. A working groove is formed in the surface of the rack, a leak hunting mechanism is arranged in the working groove in the rack, and a sensor body is detected through a leak hunting rack, an air cylinder and a clamp of the leak hunting mechanism; according to the utility model, the leak hunting mechanism and the feeding mechanism are specially designed, the feeding mechanism can rapidly and accurately place a sensor to be detected at a detection position, the leak hunting mechanism carries out detection by using nitrogen, and all parts work cooperatively, so that the production efficiency is greatly improved, and the detection requirements of large-scale sensor production are met; through the sleeve, the sealing cover, the lifting frame, the bottom plate, the sealing cylinder and other components in the leak detection mechanism, the components can be tightly attached to the clamp and the sensor body under the driving of the air cylinder, it is ensured that nitrogen cannot leak from non-detection parts in the detection process, the accuracy of the detection result is ensured, and the misjudgment situation caused by poor sealing is effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, concretely is sensor assembly leak detection mechanism. BACKGROUND

[0002] Sensor has wide application in many fields such as automobile, industrial automation, aerospace etc., and its sealing is crucial for normal work. The sensor assembly leak detection mechanism is a device specially used for detecting whether sensor exists leakage after assembly, to ensure good isolation between sensor interior and external environment, guarantee its measurement accuracy and reliability, and prevent faults or performance degradation caused by leakage.

[0003] In prior art, the sealing device of sensor assembly in traditional technology is simple and rough, often only simple sealing method is adopted, such as basic rubber gasket or simple plugging structure. These traditional sealing methods are difficult to closely fit sensor and clamp when facing complex sensor shape and detection environment, and nitrogen is easy to leak from non-detection part in detection process, which makes detection environment unstable, and pressure and other detection parameters cannot accurately reflect the real sealing state of sensor, which inevitably frequently appears misjudgment caused by poor sealing, and unqualified products are misjudged as qualified, or vice versa, which seriously affects the control of product quality, reduces the overall reliability of product and increases the after-sales maintenance cost. In view of this, we launch the sensor assembly leak detection mechanism. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing sensor assembly leak detection mechanism to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: sensor assembly leak detection mechanism, comprising: rack, feeding mechanism and nitrogen cylinder;

[0006] The surface of the rack is provided with a working groove, and the working groove and the rack are integrally formed, the leak detection mechanism is arranged in the working groove in the interior of the rack, and the sensor body is detected by the leak detection frame, the cylinder and the clamp of the leak detection mechanism;

[0007] The feeding mechanism is arranged on the top of the rack, and the feeding mechanism comprises a working frame.

[0008] The nitrogen cylinder is arranged on the side of the rack, and the number of the nitrogen cylinder is two groups.

[0009] Preferably, the leak detection mechanism comprises a partition plate connected to the top of the leak detection frame, the leak detection frame is located on the inner side of the frame, the air cylinders are connected to the top of the leak detection frame at equal intervals, and the partition plate is located between the two groups of air cylinders; the clamp is connected to the bottom of the leak detection frame; the sensor body is connected to the surface of the clamp; and the output end of the air cylinder is connected with the gas outlet.

[0010] Preferably, a sleeve is arranged outside the surface of the gas outlet, the sleeve is used for sealing, the bottom of the sleeve is connected with a sealing cover, the bottom of the sealing cover is connected with a lifting frame, the bottom of the lifting frame is connected with a bottom plate, the bottom of the bottom plate is connected with a sealing cylinder, the sealing cylinder can avoid the nitrogen from running out and affecting the detection, the sealing cylinder is connected to the top of the clamp, the gas outlet is aligned with the sensor body, and the output end of the nitrogen cylinder is connected with the gas outlet.

[0011] Preferably, the feeding mechanism further comprises a side frame on the inner side of the frame, the side frame is connected to the surface of the frame through bolts, the side edge of the side frame is connected with a connecting plate, the connecting plate is connected to the side edge of the side frame through bolts, the number of the connecting plates is two groups, the side edges of the two groups of connecting plates are connected with T-shaped plates, the T-shaped plates are connected to the side edges of the connecting plates through bolts, the bottom of the T-shaped plate is connected with a hydraulic cylinder, the hydraulic cylinder is connected to the bottom of the T-shaped plate through bolts, the output end of the hydraulic cylinder is connected with a clamping plate, and a workbench is connected between the two groups of clamping plates, a plurality of air slots are arranged on the surface of the workbench at equal intervals, and the air slots and the workbench are integrally formed.

[0012] Preferably, a socket is arranged on the side edge of the workbench, the socket and the workbench are integrally formed, and the clamping plate is inserted into the inside of the socket, and the clamping plate is used for fixing the workbench.

[0013] Preferably, a top plate is arranged on the top of the side frame, and the top plate is connected to the top of the side frame through bolts.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) The specially designed leak detection mechanism and feeding mechanism realize the automatic detection process after the sensor is assembled, the feeding mechanism can quickly and accurately place the sensor to be detected to the detection position, the leak detection mechanism detects by using nitrogen, and each component cooperates to complete the sealing detection of the sensor in a short time, thereby greatly improving the production efficiency and being suitable for the detection requirement of large-scale sensor production.

[0016] (2), through the sealing device in the leak detection mechanism design ingenious, including sleeve, sealing cover, lifting frame, bottom plate and sealing cylinder and other components, under the drive of the cylinder can be closely attached clamp and sensor body, ensure that the detection process nitrogen will not leak from the non-detection site, ensure the accuracy of the test results, effectively avoid the misjudgment caused by poor sealing. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is the structural schematic diagram of the leak detection mechanism of the utility model;

[0019] Figure 3 It is the structural schematic diagram of the leak detection mechanism side of the utility model;

[0020] Figure 4 It is the structural schematic diagram of the feeding mechanism of the utility model.

[0021] In the drawing: 1, rack; 2, working groove; 3, leak detection mechanism; 31, leak detection frame; 32, cylinder; 33, partition plate; 34, gas outlet; 35, sleeve; 36, sealing cover; 37, bottom plate; 38, lifting frame; 39, sealing cylinder; 310, sensor body; 311, clamp; 4, nitrogen cylinder; 5, feeding mechanism; 51, side frame; 52, top plate; 53, connecting plate; 54, T-shaped plate; 55, clamping plate; 56, working frame; 57, empty slot; 58, socket; 59, hydraulic cylinder. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: sensor assembly leak detection mechanism, comprising: rack 1, the surface of the rack 1 is equipped with working groove 2, the inside of the rack 1 is located in working groove 2 and is provided with leak detection mechanism 3, sensor body 310 is detected by the leak detection frame 31, cylinder 32 and clamp 311 of the leak detection mechanism 3;

[0024] Feeding mechanism 5, the feeding mechanism 5 is arranged at the top of rack 1, and the feeding mechanism 5 includes working frame 56;

[0025] Nitrogen cylinder 4, which is arranged at the side of the rack 1, the number of the nitrogen cylinder 4 is two groups.

[0026] The leak detection mechanism 3 includes a baffle plate 33 connected at the top of the leak detection frame 31, the leak detection frame 31 is located at the inner side of the rack 1, the air cylinder 32 is connected at the top of the leak detection frame 31 at equal intervals, and the baffle plate 33 is located between the two groups of air cylinders 32, the clamp 311 is connected at the bottom of the leak detection frame 31, the sensor body 310 is connected to the surface of the clamp 311, and the output end of the air cylinder 32 is connected with the gas outlet 34.

[0027] The surface of the gas outlet 34 is provided with a sleeve 35 for sealing, the bottom of the sleeve 35 is connected with a sealing cover 36, the bottom of the sealing cover 36 is connected with a lifting frame 38, the bottom of the lifting frame 38 is connected with a bottom plate 37, the bottom of the bottom plate 37 is connected with a sealing cylinder 39, the sealing cylinder 39 is arranged to avoid nitrogen running out and affecting detection, the sealing cylinder 39 is connected at the top of the clamp 311, and the gas outlet 34 is aligned with the sensor body 310, and the output end of the nitrogen cylinder 4 is connected with the gas outlet 34.

[0028] The feeding mechanism 5 further includes a side frame 51 at the inner side of the rack 1, the side frame 51 is connected to the surface of the rack 1 by bolts, the side frame 51 is connected with a connecting plate 53 at the side, the connecting plate 53 is connected to the side of the side frame 51 by bolts, the number of the connecting plate 53 is two groups, the side of the two groups of connecting plate 53 is connected with a T-shaped plate 54, the T-shaped plate 54 is connected to the side of the connecting plate 53 by bolts, the bottom of the T-shaped plate 54 is connected with a hydraulic cylinder 59, the hydraulic cylinder 59 is connected to the bottom of the T-shaped plate 54 by bolts, the output end of the hydraulic cylinder 59 is connected with a clamping plate 55, and a workbench 56 is connected between the two groups of clamping plates 55, the surface of the workbench 56 is provided with a hollow groove 57 at equal intervals, and the hollow groove 57 and the workbench 56 are integrally formed.

[0029] The side of the workbench 56 is provided with a socket 58, the socket 58 and the workbench 56 are integrally formed, and the clamping plate 55 is inserted into the inside of the socket 58, and the clamping plate 55 is used for fixing the workbench 56.

[0030] The top of the side frame 51 is provided with a top plate 52, which is connected to the top of the side frame 51 by bolts.

[0031] Specifically, in use, the empty slot 57 on the workbench 56 is used to place the sensor body 310 to be detected. When loading is required, the hydraulic cylinder 59 drives the clamping plate 55 to move. Since the clamping plate 55 is inserted into the socket 58 at the side of the workbench 56, under the action of the hydraulic cylinder 59, the two sets of clamping plates 55 move closer to or away from each other, thereby realizing clamping or loosening of the workbench 56. When the clamping plate 55 loosens the workbench 56, the workbench 56 with the sensor placed thereon can be moved to a suitable position for the next detection operation. When the workbench 56 needs to be fixed, the hydraulic cylinder 59 clamps the workbench 56 with the clamping plate 55, so as to ensure that the workbench 56 remains stable during detection.

[0032] The nitrogen cylinder 4 serves as a gas source, and its output end is connected with the gas outlet 34 of the leak detection mechanism 3. Nitrogen enters the detection system through the gas outlet 34. The air cylinders 32 on the leak detection frame 31 are arranged at equal intervals, which drive related components to realize sealing and detection actions. The partition plate 33 is located between the two groups of air cylinders 32, which plays a certain isolation and auxiliary support role.

[0033] The clamp 311 is used to fix the sensor body 310, so as to ensure that the sensor remains stable in position and the interface is tightly connected with the detection device during detection. The sleeve 35 outside the gas outlet 34, the sealing cover 36 connected with the bottom of the sleeve 35, the lifting frame 38, the bottom plate 37 and the sealing cylinder 39 constitute a sealing device. Before detection, the sealing cylinder 39 is tightly connected with the top of the clamp 311 through the driving of the air cylinder 32 and other driving components, and the gas outlet 34 is accurately aligned with the interface of the sensor body 310, so as to form a sealed space around the sensor, thereby preventing nitrogen from leaking and preparing for subsequent pressure detection.

[0034] Nitrogen is output from the nitrogen cylinder 4, enters the inside of the sensor body 310 or the sealed space thereof (depending on the detection requirements of the sensor body 310), at this time, the pressure change in the inside of the sensor body 310 or the sealed space is detected to determine whether the sensor body 310 has a leak. If the sensor body 310 is well sealed, the pressure should remain relatively stable within a certain period of time. If the sensor body 310 has a leak, nitrogen will escape from the leak, resulting in a decrease in the pressure in the sealed space. The pressure change can be monitored in real time by a pressure sensor and compared with a preset pressure threshold, which is a prior art and will not be described here. Whether the sensor body 310 is qualified is determined.

[0035] The pure leak detection beat per second is 25S, and 5 sets of leak detection mechanisms 3 are required to meet the requirements. The NG products are placed into the NG recycling box.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak detection mechanism for sensor assembly, characterized by, Include: Frame (1), the surface of the frame (1) is provided with a working groove (2), the inside of the frame (1) is provided with a leak detection mechanism (3) in the working groove (2), the sensor body (310) is detected by the leak detection frame (31), the air cylinder (32) and the clamp (311) of the leak detection mechanism (3); Feeding mechanism (5), the feeding mechanism (5) is arranged on the top of the frame (1), the feeding mechanism (5) comprises a working frame (56); Nitrogen cylinder (4), the nitrogen cylinder (4) is arranged on the side of the frame (1), the number of the nitrogen cylinder (4) is two groups.

2. The leak testing mechanism for sensor assembly according to claim 1, wherein The leak detection mechanism (3) comprises a partition baffle (33) connected to the top of the leak detection frame (31), the leak detection frame (31) is located on the inner side of the frame (1), the air cylinder (32) is connected to the top of the leak detection frame (31) at equal intervals, and the partition baffle (33) is located between the two groups of air cylinders (32), the clamp (311) is connected to the bottom of the leak detection frame (31), the sensor body (310) is connected to the surface of the clamp (311), and the output end of the air cylinder (32) is connected with the gas outlet (34).

3. The leak testing mechanism for sensor assembly according to claim 2, wherein The surface of the gas outlet (34) is provided with a sleeve (35), the bottom of the sleeve (35) is connected with a sealing cover (36), the bottom of the sealing cover (36) is connected with a lifting frame (38), the bottom of the lifting frame (38) is connected with a bottom plate (37), the bottom of the bottom plate (37) is connected with a sealing cylinder (39), the sealing cylinder (39) is connected to the top of the clamp (311), and the gas outlet (34) is aligned with the sensor body (310), the output end of the nitrogen cylinder (4) is connected with the gas outlet (34).

4. The leak testing mechanism for sensor assembly according to claim 1, wherein The feeding mechanism (5) further comprises a side frame (51) on the inner side of the frame (1), the side edge of the side frame (51) is connected with a connecting plate (53), the number of the connecting plate (53) is two groups, the side edge of the two groups of connecting plates (53) is connected with a T-shaped plate (54), the bottom of the T-shaped plate (54) is connected with a hydraulic cylinder (59), the output end of the hydraulic cylinder (59) is connected with a clamping plate (55), and the working frame (56) is connected between the two groups of clamping plates (55), the surface of the working frame (56) is provided with a hollow groove (57) at equal intervals.

5. The leak testing mechanism for sensor assembly according to claim 1, wherein The side edge of the working frame (56) is provided with a socket (58), and the clamping plate (55) is inserted into the inside of the socket (58).

6. The leak testing mechanism for sensor assembly according to claim 4, wherein The top of the side frame (51) is provided with a top plate (52).

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