Eddy current probe shell assembly

Abstract

An eddy current probe shell assembly comprises a shell base and a probe, a threaded through hole penetrating front and back is formed in the shell base, a lengthened sleeve is installed in the threaded through hole, internal threads are arranged on the inner surface of one end of the lengthened sleeve, external threads are arranged on the outer surface of the fixed end of the probe, and the probe is matched with the internal threads of the lengthened sleeve through the external threads; the outer surface of the lengthened sleeve is sleeved with a support adapter, and the support adapter is connected to the outer surface of the threaded installation pipe at one end of the shell base through threads. A mounting notch is formed in the other end of the shell base, a shell end cover is arranged on the outer side of the mounting notch, a fixing column is arranged in the mounting notch, and the outer surface of the lengthened sleeve is in threaded connection with a locking nut; a waterproof connector threaded hole is formed in the side face of the shell base and communicated with the installation notch. According to the utility model, the defects in the prior art are overcome, and the long-short two-section type adjustment effect on the axis position of the probe can be realized through the lengthened sleeve and the support adapter.

Description

Technical Field

[0001] The utility model relates to the technical field of eddy current probes, in particular to an eddy current probe housing component. Background Art

[0002] The eddy current sensor can statically and dynamically measure the distance between the measured metal conductor and the probe surface in a non-contact, high linearity and high resolution manner. It is a non-contact linear measurement tool. It uses the principle of eddy current effect to accurately measure the relative position between the measured object (must be a metal conductor) and the probe end face. It is characterized by good long-term working reliability, high sensitivity, strong anti-interference ability, non-contact measurement, fast response speed, and no influence from media such as oil and water. It is often used for long-term real-time monitoring of parameters such as shaft displacement, shaft vibration, and shaft speed of large rotating machinery. It can analyze the working condition and cause of failure of the equipment, and effectively protect and pre-repair the equipment.

[0003] In order to achieve accurate measurement, the installation position of the eddy current sensor needs to be adjustable so that the distance between the probe and the axis reaches the optimal value. However, the layout of different body parts and the setting positions of various sensors are also different, which brings great interference to the installation of eddy current sensors. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides an eddy current probe housing assembly, which overcomes the deficiencies of the prior art and has a reasonable design. The probe axis position can be adjusted in two stages by extending the sleeve and the support adapter.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An eddy current probe housing assembly comprises a shell base and a probe, wherein the shell base is provided with a threaded through hole extending from front to back, an extended sleeve is installed in the threaded through hole, two ends of the extended sleeve are respectively located outside the two ends of the shell base, an inner surface of one end of the extended sleeve is provided with an internal thread, an outer surface of the fixed end of the probe is provided with an external thread, and the fixed end of the probe is matched and connected with the internal thread of the end of the extended sleeve through the external thread; a support adapter is sleeved on the outer surface of one end of the extended sleeve close to the probe, a threaded mounting tube is provided at one end of the shell base, and the support adapter is connected to the outer surface of the threaded mounting tube through threads;

[0007] A mounting slot is provided at the other end of the shell base, a shell end cover is installed on the outside of the mounting slot, a fixing column is provided in the mounting slot, a locking nut is threadedly connected to the outer surface of the other end of the extended sleeve, and the locking nut is abutted against the fixing column; a waterproof joint threaded hole is provided on the side of the shell base, and the waterproof joint threaded hole is communicated with the mounting slot.

[0008] Preferably, a wrench flat is provided on the outer surface of one end of the extended sleeve close to the shell end cover.

[0009] Preferably, a fixing gasket and a sealing gasket are arranged between the locking nut and the fixing column, and the sealing gasket is arranged in close contact with the fixing column.

[0010] Preferably, a sealing protrusion ring is provided on the inner ring surface of the sealing gasket, and the extended sleeve is sealingly connected to the inner wall of the fixing column via the sealing protrusion ring.

[0011] The utility model provides an eddy current probe housing assembly. It has the following beneficial effects: by installing an extended sleeve into a threaded through hole in the middle of a shell base, the external thread on the outer surface of the probe shell is screwed into the internal thread at the end of the extended sleeve, and the axial position of the extended sleeve is adjusted according to the installation requirements, and the support adapter is threadedly installed on the threaded mounting tube at one end of the shell base; then the support adapter is assembled and fixed with an external mounting part, and a locking nut is threadedly connected at the other end of the extended sleeve, so that after the axial position of the extended sleeve is adjusted in place, the locking nut can be tightened so that the locking nut is pressed against the outside of the fixing column, thereby achieving a locking and fixing effect on the extended sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings required for describing the prior art are briefly introduced below.

[0013] Figure 1 A schematic diagram of the structure of the utility model;

[0014] Figure 2 A schematic diagram of the cross-sectional structure of the utility model;

[0015] Description of the numbers in the figure:

[0016] 1. Shell base; 2. Probe; 3. Extension sleeve; 4. External thread; 5. Support adapter; 6. Threaded mounting tube; 7. Mounting notch; 8. Locking nut; 9. Fixing column; 10. Threaded hole of waterproof connector; 11. Wrench flat; 12. Fixing gasket; 13. Sealing gasket; 14. Shell end cover. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0018] Embodiment 1, as Figure 1-2As shown, an eddy current probe housing assembly comprises a shell base 1 and a probe 2, the shell base 1 is provided with a threaded through hole which passes through from front to back, an extended sleeve 3 is installed in the threaded through hole, two ends of the extended sleeve 3 are respectively located outside the two ends of the shell base 1, an inner surface of one end of the extended sleeve 3 is provided with an internal thread, an outer surface of the fixed end of the probe 2 is provided with an external thread 4, and the fixed end of the probe 2 is matched and connected with the internal thread at the end of the extended sleeve 3 through the external thread 4; a support adapter 5 is sleeved on the outer surface of one end of the extended sleeve 3 close to the probe 2, a threaded mounting tube 6 is provided at one end of the shell base 1, and the support adapter 5 is connected to the outer surface of the threaded mounting tube 6 through threads;

[0019] A mounting slot 7 is provided at the other end of the shell base 1, a shell end cover 14 is installed on the outside of the mounting slot 7, a fixing column 9 is provided inside the mounting slot 7, and a locking nut 8 is threadedly connected to the outer surface of the other end of the extended sleeve 3, and the locking nut 8 is abutted against the fixing column 9; a waterproof joint threaded hole 10 is provided on the side of the shell base 1, and the waterproof joint threaded hole 10 is connected to the mounting slot 7.

[0020] Working principle:

[0021] During installation, first install the extension sleeve 3 into the threaded through hole in the middle of the shell base 1, screw the external thread 4 on the outer surface of the probe 2 shell into the internal thread at the end of the extension sleeve 3, and adjust the axial position of the extension sleeve 3 according to the installation requirements, and install the support adapter 5 on the threaded mounting tube 6 at one end of the shell base 1 through threads; then assemble and fix the support adapter 5 with the external mounting parts. In this embodiment, the support adapter 5 adopts an insulating adapter; thereby, the probe 2 is installed and fixed. And by connecting the locking nut 8 through threads at the other end of the extension sleeve 3, after the axial position of the extension sleeve 3 is adjusted to the right position, the locking nut 8 can be tightened so that the locking nut 8 is pressed against the outside of the fixing column 9, thereby achieving the locking and fixing effect of the extension sleeve 3. The signal cable of the probe 2 passes through the upper end along the extension sleeve 3, and then passes through the waterproof joint threaded hole 10 on the side of the shell base 1, and is tightened into the waterproof joint threaded hole 10 through the waterproof joint.

[0022] Embodiment 2, as a further preferred embodiment of embodiment 1, a spanner flat surface 11 is provided on the outer surface of one end of the extension sleeve 3 close to the housing end cover 14. When tightening the locking nut 8, the extension sleeve 3 can be fixed by the spanner flat surface 11 to prevent the extension sleeve 3 from rotating with the locking nut 8; and when the axial position of the extension sleeve 3 needs to be fine-tuned, the axial position of the extension sleeve 3 can be adjusted by rotating the spanner flat surface 11 to meet the requirements of different insertion depth sensors on site.

[0023] Embodiment 3, as a further preferred embodiment of embodiment 1, a fixing gasket 12 and a sealing gasket 13 are provided between the locking nut 8 and the fixing column 9, and the sealing gasket 13 is provided in close contact with the fixing column 9. The sealing gasket 13 can achieve a sealing effect at the position where the extension sleeve 3 and the fixing column 9 are connected.

[0024] Embodiment 4, as a further preferred embodiment of embodiment 1, a sealing protrusion ring is provided on the inner ring surface of the sealing gasket 13, and the extended sleeve 3 is sealedly connected to the inner wall of the fixed column 9 through the sealing protrusion ring. The sealing protrusion ring further ensures the sealing effect between the inner wall of the fixed column 9 and the outer wall of the extended sleeve 3.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An eddy current probe housing assembly, Features: The invention comprises a shell base (1) and a probe (2), wherein the shell base (1) is provided with a threaded through hole extending from front to back, an extended sleeve (3) is installed in the threaded through hole, and the two ends of the extended sleeve (3) are respectively located outside the two ends of the shell base (1), an inner surface of one end of the extended sleeve (3) is provided with an internal thread, and the outer surface of the fixed end of the probe (2) is provided with an external thread (4), and the fixed end of the probe (2) is matched and connected with the internal thread of the end of the extended sleeve (3) through the external thread (4); a support adapter (5) is sleeved on the outer surface of one end of the extended sleeve (3) close to the probe (2), and a threaded mounting tube (6) is provided at one end of the shell base (1), and the support adapter (5) is connected to the outer surface of the threaded mounting tube (6) through a thread; The other end of the shell base (1) is provided with a mounting notch (7), a shell end cover (14) is installed outside the mounting notch (7), a fixing column (9) is arranged inside the mounting notch (7), and a locking nut (8) is connected to the outer surface of the other end of the extension sleeve (3) through a thread, and the locking nut (8) abuts against the fixing column (9); a waterproof joint threaded hole (10) is provided on the side of the shell base (1), and the waterproof joint threaded hole (10) is connected to the mounting notch (7).

2. An eddy current probe housing assembly according to claim 1, Features: A wrench flat surface (11) is provided on the outer surface of one end of the extended sleeve (3) close to the shell end cover (14).

3. The eddy current probe housing assembly according to claim 1, Features: A fixing gasket (12) and a sealing gasket (13) are arranged between the locking nut (8) and the fixing column (9), and the sealing gasket (13) is arranged to fit the fixing column (9).

4. An eddy current probe housing assembly according to claim 3, Features: The inner ring surface of the sealing gasket (13) is provided with a sealing protrusion ring, and the extended sleeve (3) is sealedly connected to the inner wall of the fixing column (9) via the sealing protrusion ring.

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