A two-chamber integrated sensor

Abstract

The present invention discloses a two-chamber integrated sensor, comprising a probe, a signal processing circuit board and a connector, as well as a first chamber and a second chamber surrounded by a shell, wherein the signal processing circuit board is installed in the first chamber, the probe is provided in the second chamber, the first chamber is detachably connected to the second chamber, one end of the connector is installed on the signal processing circuit board, the other end of the connector passes through the shells of the first and second chambers and then connects to one end of the probe, and the other end of the probe passes through the shell of the second chamber to detect an object to be detected. The present invention isolates the signal processing circuit board from the probe, thereby preventing the probe from interfering with the signal processing circuit, and when debugging, repairing and replacing the signal processing circuit board, only the first chamber needs to be disassembled to achieve the disassembly of the signal processing circuit board without affecting the probe structure in the second chamber, making the sensor circuit board disassembly more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of sensors, and in particular to a two-cavity integrated sensor. Background Art

[0002] Eddy current sensors can measure the distance between a metal conductor and the probe surface statically and dynamically, non-contactly, with high linearity and high resolution. They are non-contact linear measurement tools that accurately measure static and dynamic relative displacement changes between the measured object and the probe end face. In the analysis, vibration research, and analytical measurement of high-speed rotating and reciprocating machinery, non-contact, high-precision vibration and displacement signals can continuously and accurately acquire various parameters of the rotor's vibration state, such as radial vibration, amplitude, and axial position of the shaft. Eddy current sensors are widely used in online monitoring and fault diagnosis of large rotating machinery due to their long-term reliability, wide measurement range, high sensitivity, and high resolution.

[0003] Eddy current sensors are divided into integrated eddy current sensors and split eddy current position sensors. Compared with the split eddy current position sensor, the integrated eddy current displacement sensor has the characteristics of not requiring a coaxial cable connection between the probe and the signal processing circuit, and the signal processing circuit, probe and signal display circuit are integrated in a small or micro metal housing. It has the characteristics of on-site display of sensor signals and remote transmission of sensor signals.

[0004] However, the probe and circuit board of the existing integrated eddy current sensor are enclosed in a metal cavity. When disassembling the circuit board, the cover and probe must be removed first, and then the circuit board can be taken out, which makes it inconvenient to disassemble and assemble the circuit board, and is not conducive to the debugging, maintenance and replacement of the circuit board. At the same time, when they are in the same cavity, it is easy for the probe to interfere with the circuit board when adjusting the installation gap between the probe and the object to be measured. Summary of the Invention

[0005] The present invention provides a two-cavity integrated sensor to solve the technical problems that the probe and circuit board of the integrated eddy current sensor are enclosed in a metal cavity, which makes it inconvenient to disassemble and assemble the circuit board, and the circuit board easily interferes with the probe when adjusting the installation gap between the probe and the object to be measured.

[0006] In order to solve the above technical problems, the present invention proposes a two-chamber integrated sensor, including a probe, a signal processing circuit board and a connector, and a first chamber and a second chamber surrounded by a shell, the signal processing circuit board is installed in the first chamber, the probe is arranged in the second chamber, the first chamber is detachably connected to the second chamber, one end of the connector is installed on the signal processing circuit board, and the other end of the connector passes through the shells of the first chamber and the second chamber and is connected to one end of the probe, and the other end of the probe passes through the shell of the second chamber to detect the object to be detected.

[0007] As a further improvement of the technical solution of the present invention:

[0008] The two-chamber integrated sensor also includes: a probe mounting base, a load-bearing screw sleeve, a lower chamber cover, a lower cover, an outer shell and a top cover;

[0009] The bearing screw sleeve is mounted on the probe mounting base, the lower chamber cover is mounted on the bearing screw sleeve, the probe mounting base, the bearing screw sleeve and the lower chamber cover together form the second chamber, the lower cover is detachably mounted on the lower chamber cover, the outer shell is mounted on the lower cover, the top cover is mounted on the outer shell, the lower cover, the outer shell and the top cover together form the first chamber, the connecting piece passes through the lower cover and the lower chamber cover and is connected to one end of the probe, and the other end of the probe passes through the probe mounting base and detects the object to be detected.

[0010] The connecting piece is specifically a coaxial socket, which extends into the second cavity after passing through the lower cover and the lower cavity cover. The coaxial socket is connected to the probe, so that the signal of the probe is transmitted to the signal processing circuit board after passing through the coaxial socket.

[0011] The probe includes a head body, a probe metal rod, a probe metal screw and a coaxial plug. The head body is used to sense the distance between the probe and the object to be detected. The head body is connected to one end of the probe metal rod, the other end of the probe metal rod is connected to one end of the probe metal screw, the other end of the probe metal screw is connected to the coaxial plug, and the coaxial plug is inserted into the coaxial socket.

[0012] The coaxial socket is a deep-hole socket, the coaxial plug is a long-pin plug, the depth of the coaxial plug inserted into the coaxial socket is adjustable, the depth of the coaxial plug inserted into the coaxial socket does not affect the connection effect between the coaxial plug and the coaxial socket, and at the same time, the coaxial plug can avoid interference with the signal processing circuit board when adjusting the installation gap between the probe and the object to be measured.

[0013] The diameters of the lower cover, the outer shell and the top cover are the same, and the diameter of the lower cavity cover is smaller than the diameter of the lower cover.

[0014] The inner ring of the top cover is provided with a first internal thread, the upper part of the outer shell is provided with a first external thread corresponding to the first internal thread, the first internal thread and the first external thread are threadedly matched to enable the top cover to be installed on the outer shell, the inner ring of the load-bearing screw sleeve is provided with a second internal thread, the outer ring of the probe mounting base is provided with a second external thread corresponding to the second internal thread, the second internal thread and the second external thread are threadedly matched to enable the load-bearing screw sleeve to be installed on the probe mounting base.

[0015] The outer shell is provided with a plurality of outer shell threaded blind holes, the lower cover is provided with a first lower cover screw through hole corresponding to the outer shell threaded blind hole, the lower cover is also provided with a second lower cover threaded through hole, the lower cavity cover is provided with a lower cavity cover threaded through hole corresponding to the second lower cover threaded through hole, the outer shell and the lower cover are connected by a second screw, and the lower cover and the lower cavity cover are connected by a first screw.

[0016] The load-bearing screw sleeve is specifically a hollow cylinder, and the interior of the hollow cylinder includes a first load-bearing screw sleeve through hole and a second load-bearing screw sleeve screw hole with two different diameters. The aperture of the first load-bearing screw sleeve through hole is smaller than that of the second load-bearing screw sleeve screw hole, so that an inner T-step surface is formed between the first load-bearing screw sleeve through hole and the second load-bearing screw sleeve screw hole. The lower cavity cover includes an upper part and a lower part, and the upper diameter is smaller than the lower diameter, so that an outer T-step surface is formed between the upper and lower parts. The outer T-step surface serves as a thrust locking surface of the inner T-step surface. The two cooperate to make the load-bearing screw sleeve and the lower cavity cover movably connected together.

[0017] A signal display circuit board is further provided in the first chamber. The signal display circuit board is mounted on the top cover. A signal display window is provided on the top cover facing the signal display circuit board.

[0018] The shell is also provided with an aviation socket, which is electrically connected to the signal processing circuit board.

[0019] The present invention has the following beneficial effects: a two-chamber integrated sensor of the present invention arranges a signal processing circuit board and a probe in a first chamber and a second chamber respectively, and realizes signal transmission between the probe and the circuit through a connecting piece. Since the signal processing circuit board and the probe are isolated, interference of the probe on the signal processing circuit is avoided. Moreover, when debugging, repairing and replacing the signal processing circuit board, it is only necessary to disassemble and assemble the first chamber to realize disassembly and assembly of the signal processing circuit board without affecting the probe structure in the second chamber, making disassembly and assembly of the sensor circuit board more convenient.

[0020] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute a part of this application, are used to provide a further understanding of the present invention.

[0022] The figures are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0023] Figure 1 This is a schematic structural diagram of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0025] Figure 3 1 is a schematic structural diagram of a top cover of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0026] Figure 4 yes Figure 3 A top view of the top cover;

[0027] Figure 5 1 is a schematic structural diagram of a housing of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0028] Figure 6 yes Figure 5 a bottom view of the housing;

[0029] Figure 7 1 is a schematic structural diagram of the lower cover of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0030] Figure 8 yes Figure 7 a top view of the lower cover;

[0031] Figure 9 1 is a schematic structural diagram of the lower chamber cover of the two-chamber integrated sensor of the preferred embodiment of the present invention;

[0032] Figure 10 yes Figure 9 A top view of the lower cavity cover;

[0033] Figure 11 1 is a structural schematic diagram of a load-bearing screw sleeve of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0034] Figure 12 yes Figure 11 A top view of the load-bearing screw sleeve;

[0035] Figure 13 This is a schematic structural diagram of a probe mounting base of a two-cavity integrated sensor according to a preferred embodiment of the present invention;

[0036] Figure 14 yes Figure 13 Bottom view of the probe mounting base;

[0037] Figure 15 1 is a schematic structural diagram of a probe of a two-chamber integrated sensor according to a preferred embodiment of the present invention;

[0038] Figure 16 Schematic diagram of the connection between the top cover and the housing of the two-chamber integrated sensor according to the preferred embodiment of the present invention;

[0039] Figure 17 This is a schematic diagram of the connection between the signal processing circuit board and the lower cover of the two-chamber integrated sensor of the preferred embodiment of the present invention;

[0040] Figure 18 This is a schematic diagram of the connection between the lower cover and the outer shell of the two-chamber integrated sensor of the preferred embodiment of the present invention;

[0041] Figure 19 This is a schematic diagram of the connection between the lower chamber cover and the load-bearing screw sleeve of the two-chamber integrated sensor of the preferred embodiment of the present invention;

[0042] Figure 20 Schematic diagram of the connection between the lower cover and the lower chamber cover of the two-chamber integrated sensor according to the preferred embodiment of the present invention;

[0043] Figure 21 This is a schematic diagram of the connection between the probe mounting base and the probe of the two-chamber integrated sensor of the preferred embodiment of the present invention;

[0044] Figure 22 It is a schematic diagram of the connection between the probe of the two-chamber integrated sensor and the signal processing circuit board in a preferred embodiment of the present invention.

[0045] The numbers in the figure represent:

[0046] 1. Probe; 101. Head body; 102. Probe metal rod; 103. Scale; 104. Probe metal screw; 2. Machine housing; 3. Probe mounting base; 301. External screw; 302. Second external thread; 303. Mounting base threaded hole; 304. Mounting base round hole; 305. Mounting base hexagonal wrench surface; 4. Load-bearing screw sleeve; 401. Screw sleeve hexagonal wrench surface; 402. First load-bearing screw sleeve through hole; 403. Second internal thread; 404. Second load-bearing screw sleeve screw hole; 405. Internal T-step surface; 406. Screw sleeve threaded through hole; 5. O-ring sealing flat washer; 6. First nut; 7. First screw; 8. Lower cavity cover; 801. External T-step surface; 802. First round hole; 803. Lower cavity cover threaded through hole; 9. First metal-rubber composite sealing ring; 10. Second metal-rubber composite sealing ring; 11. Radial Anti-loosening screw; 12. Third screw; 13. Coaxial plug; 14. Coaxial socket; 15. First O-ring; 16. Second screw; 17. Lower cover; 1701. First screw hole of lower cover; 1702. Circumferential groove of lower cover; 1703. Threaded hole of lower cover; 1704. Threaded hole of lower cover; 1705. Circumferential groove of lower cover; 18. Signal processing circuit board; 19. Second O-ring; 20. Housing; 2001. First external thread; 2002. Housing undercut; 2003. Housing threaded blind hole; 21. Aviation socket; 22. Signal display circuit board; 23. Third O-ring; 24. Top cover; 2401. Hexagonal wrench surface of top cover; 2402. Signal display window; 2403. First internal thread; 2404. Top cover undercut; 25. Fourth O-ring; 26. Transparent window glass. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0048] In addition, unless otherwise defined, the technical or scientific terms used in the description of this application should have the ordinary meanings understood by those of ordinary skill in the art to which this application belongs. The words "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inside," and "outside" used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or component must have a specific orientation, be constructed, or operate in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. Therefore, they should not be understood as limitations on this application. The words "first," "second," "third," and similar terms used in the description of this application are used only for descriptive purposes to distinguish different components and should not be understood to indicate or imply relative importance. The words "one," "an," or "the" used in the description of this application should not be understood as absolute limitations on quantity, but should be understood as meaning the presence of at least one. The words "include" or "comprises" and similar terms used in the description of this application mean that the element or object preceding the word includes the elements or objects listed after the word and their equivalents, but does not exclude other elements or objects.

[0049] It should also be noted that, unless otherwise clearly specified and limited, the words "install", "connect", "connect" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection 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, an indirect connection through an intermediate medium, or a connection between two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0050] like Figure 1 and Figure 2 As shown, the two-chamber integrated sensor of this embodiment includes a probe 1, a signal processing circuit board 18 and a connector, as well as a first chamber and a second chamber surrounded by a shell. The signal processing circuit board 18 is installed in the first chamber, and the probe 1 is arranged in the second chamber. The first chamber is detachably connected to the second chamber. One end of the connector is installed on the signal processing circuit board 18, and the other end of the connector passes through the shells of the first chamber and the second chamber and is connected to one end of the probe 1. The other end of the probe 1 passes through the shell of the second chamber to detect the object to be detected.

[0051] The two-chamber integrated sensor in this embodiment also includes: a probe mounting base 3, a bearing screw sleeve 4, a lower chamber cover 8, a lower cover 17, an outer shell 20 and a top cover 24; the bearing screw sleeve 4 is installed on the probe mounting base 3, the lower chamber cover 8 is installed on the bearing screw sleeve 4, the probe mounting base 3, the bearing screw sleeve 4 and the lower chamber cover 8 together form a second chamber, the lower cover 17 is detachably installed on the lower chamber cover 8, the outer shell 20 is installed on the lower cover 17, and the top cover 24 is installed on the outer shell 20, the lower cover 17, the outer shell 20 and the top cover 24 together form a first chamber, the connecting piece passes through the lower cover 17 and the lower chamber cover 8 and is connected to one end of the probe 1, and the other end of the probe 1 passes through the probe mounting base 3 and detects the object to be detected.

[0052] In the two-chamber integrated sensor of this embodiment, a signal display circuit board 22 is also provided in the first chamber. The signal display circuit board 22 is installed on the top cover 24. A signal display window 2402 is provided on the top cover 24 opposite the signal display circuit board 22. A transparent window glass 26 is also provided between the signal display circuit board 22 and the signal display window 2402. The data of the signal display circuit board 22 can be observed in real time through the signal display window 2402 and the transparent window glass 26. The transparent window glass 26 can protect the signal display circuit board 22.

[0053] In other embodiments, the transparent window glass 26 installed on the outer shell 20 can also be embedded in the signal display window 2402, or the signal display circuit board 22 and the transparent window glass 26 can be installed on the outer shell 20 through a mounting bracket. In all of the above methods, the signal display circuit board 22 can be directly observed through the transparent window glass 26 outside the sensor, thereby realizing on-site digital display of sensor data without having to increase the size of the sensor.

[0054] In this embodiment, an aviation socket 21 is further provided on the housing 20. The aviation socket 21 is electrically connected to the signal processing circuit board 18 for outputting the sensor signal to a remote end.

[0055] In the two-chamber integrated sensor of this embodiment, the connecting part is specifically a coaxial socket 14, which is fixedly mounted on the signal processing circuit board 18. The coaxial socket 14 passes through the lower cover 17 and the lower chamber cover 8 and extends into the second chamber. The coaxial socket 14 is connected to the probe 1, so that the signal of the probe 1 is transmitted to the signal processing circuit board 18 after passing through the coaxial socket 14.

[0056] Figure 3 and Figure 4As shown, a hexagonal wrench surface 2401 of the top cover is provided at the radial upper end of the top cover 24, and the signal display window 2402 is a through hole opened in the center of the top cover 24, which is used to observe the data of the signal display circuit board 22 in real time. A first internal thread 2403 for connecting with the upper cavity shell is vertically processed from bottom to top along the axial direction of the top cover 24, which is used to connect with the upper cavity shell 20, and a top cover back-off groove 2404 is provided on the inner side of the top cover for placing the fourth O-ring 25.

[0057] like Figure 5 and Figure 6 As shown, the shell 20 is a cylindrical structure. A first external thread 2001 corresponding to the first internal thread 2403 is provided on the outside of the shell 20. A shell tool recess 2002 for accommodating the third O-ring 23 is provided below the first external thread 2001. The circular through hole inside the shell 20 forms the main space of the first chamber. The shell 20 is vertically provided with a plurality of shell thread blind holes 2003 along the axial circumference from bottom to top. In this embodiment, there are specifically six shell thread blind holes 2003. In other embodiments, there can be any number of shell thread blind holes 2003.

[0058] In this embodiment, the signal display circuit board 22 and the transparent window glass 26 are installed on the top of the housing 20 in sequence, and then the third O-ring 23 is placed in the housing undercut 2002, and the fourth O-ring 25 is placed in the top cover undercut 2404. Then, the top cover 24 is put on the housing 20, and the hexagonal wrench surface 2401 of the top cover is clamped by a tool so that the first internal thread 2403 of the top cover 24 and the first external thread 2001 of the housing 20 are threadedly matched and tightened. At the same time, the gap between the top cover 24 and the transparent window glass 26 is filled by the fourth O-ring 25, and the gap between the top cover 24 and the housing is filled by the third O-ring 23, thereby enhancing the waterproof and dustproof performance.

[0059] like Figure 7 and Figure 8 As shown, the lower cover 17 is a circular plate with a circle of grooves on each of the upper and lower surfaces. The first lower cover circumferential groove 1702 on the upper surface of the lower cover 17 is used to accommodate the first O-ring 15, and the second lower cover circumferential groove 1705 on the lower surface of the lower cover 17 is used to accommodate the second O-ring 19. The lower cover 17 is provided with six first lower cover screw holes 1701 corresponding to the threaded blind holes 2003 of the shell, and the lower cover 17 is also provided with six second lower cover threaded holes 1704 along the circumference. The lower cover 17 also has a third lower cover threaded hole 1703 in the center.

[0060] An external socket thread is provided on the outer surface of the coaxial socket 14, which cooperates with the third lower cover threaded through hole 1703 to enable the coaxial socket 14 to be installed on the lower cover 17, while positioning and fixing the signal processing circuit board 18. Then, a second O-ring 19 is placed on the second lower cover circumferential groove 1705, and then six second screws 16 are respectively screwed into the six first lower cover screw through holes 1701 and the six outer shell threaded blind holes 2003 to connect the outer shell 20 and the lower cover 17. The gap between the outer shell 20 and the lower cover 17 is filled by the second O-ring 19 to enhance the waterproof and dustproof performance of the sensor.

[0061] like Figure 9 and Figure 10 As shown, the lower cavity cover 8 is an inverted T-step structure, which is divided into an upper part and a lower part. The diameter of the upper part is smaller than the diameter of the lower part, so that an outer T-step surface 801 is formed between the upper and lower parts. A first circular hole 802 for the coaxial socket 14 to pass through is opened in the center of the lower cavity cover 8, and a lower cavity cover threaded through hole 803 corresponding to the second lower cover threaded through hole 1704 is provided on the lower cavity cover 8.

[0062] After placing the first O-ring 15 on the first lower cover circumferential groove 1702 of the lower cover 17, align the lower chamber cover threaded through hole 803 of the lower chamber cover 8 with the second lower cover threaded through hole 1704, and then screw in the first screw 7. This completes the installation of the lower chamber cover 8 and the lower cover. The first O-ring 15 fills the gap between the lower cover 17 and the lower chamber cover 8 to enhance the waterproof and dustproof performance of the sensor.

[0063] Since the diameters of the lower cover 17, the outer shell 20 and the top cover 24 are the same, the diameter of the lower chamber cover 8 is smaller than the diameter of the lower cover 17. Therefore, the six first lower cover screw holes 1701 of the lower cover 17 are arranged along the circumference, and the circumferential diameter formed by the six first lower cover screw holes 1701 is larger than the diameter of the lower chamber cover 8, thereby facilitating the disassembly of the lower chamber cover 8 and the lower cover 17, and facilitating the separation of the upper second chamber.

[0064] like Figure 11 and Figure 12 As shown, the load-bearing screw sleeve 4 is a hollow cylindrical structure, and the upper part of the outer contour of the load-bearing screw sleeve 4 is provided with a screw sleeve hexagonal wrench surface 401, and the interior of the load-bearing screw sleeve 4 is provided with two first load-bearing screw sleeve through holes 402 and second load-bearing screw sleeve screw holes 404 with different diameters. The aperture of the first load-bearing screw sleeve through hole 402 is smaller than that of the second load-bearing screw sleeve screw hole 404, so that an inner T-step surface 405 is formed between the first load-bearing screw sleeve through hole 402 and the second load-bearing screw sleeve screw hole 404, and a second internal thread 403 is provided on the second load-bearing screw sleeve screw hole 404. A plurality of screw sleeve threaded through holes 406 are radially provided on the load-bearing screw sleeve 4, and there are specifically three screw sleeve threaded through holes 406 in this embodiment.

[0065] The load-bearing screw sleeve 4 is put on the lower cavity cover 8 from top to bottom, and the outer T-step surface 801 of the lower cavity cover 8 serves as the thrust locking surface of the inner T-step surface 405 of the load-bearing screw sleeve 4. The two cooperate to make the load-bearing screw sleeve 4 and the lower cavity cover 8 movably connected together.

[0066] like Figure 13 and Figure 14 As shown, the probe mounting base has a T-shaped outer contour structure with a screw hole in the middle. A second outer thread 302 corresponding to the second inner thread 403 is provided on the outer surface of the probe mounting base 3. An outer screw 301 is further provided under the second outer thread 302 on the outer surface of the probe mounting base 3. The outer screw 301 is used to cooperate and tighten with the inner thread hole of the machine housing 2 or the on-site mounting bracket. A mounting base threaded through hole 303 is opened in the middle of the probe mounting base 3 and passes through the upper and lower parts. A mounting base circular hole 304 is vertically processed from top to bottom on the upper part of the probe mounting base 3. The diameter of the mounting base circular hole 304 is larger than the diameter of the mounting base threaded through hole 303. A mounting base hexagonal wrench surface 305 is provided at the top of the outer contour of the probe mounting base 3 at a position corresponding to the screw sleeve threaded through hole 406.

[0067] The load-bearing screw sleeve 4 is installed on the probe mounting base 3 through the threaded cooperation of the second internal thread 403 and the second external thread 302. The load-bearing screw sleeve 4 and the probe mounting base 3 are locked by screwing the hexagonal wrench surface 401 of the screw sleeve. Then, three radial anti-loosening screws 11 are screwed into the screw sleeve threaded through hole 406 of the load-bearing screw sleeve 4. When the radial anti-loosening screws 11 are tightened against the hexagonal wrench surface 305 of the mounting base of the probe mounting base 3, the load-bearing screw sleeve 4 will not be loosened due to external force.

[0068] like Figure 15 As shown, the probe 1 includes a head body 101, a probe metal rod 102, a probe metal screw 104 and a coaxial plug 13. The head body 101 is used to sense the distance between the probe and the object to be detected. The head body 101 is connected to one end of the probe metal rod 102, the other end of the probe metal rod 102 is connected to one end of the probe metal screw 104, and the other end of the probe metal screw 104 is connected to the coaxial plug 13, and the coaxial plug 13 is inserted into the coaxial socket 14.

[0069] The outer surface of the probe metal screw 104 of the probe 1 is threaded, which is used to cooperate with the mounting seat threaded through hole 303 of the probe mounting seat 3 to adjust the installation gap between the probe 1 and the target object to be measured. The axial direction of the probe metal polished rod 102 of the probe 1 is engraved with a scale ruler 103, which is used as a reference when adjusting the gap of the probe 1.

[0070] The coaxial socket 14 is a deep-hole socket, and the coaxial plug 13 is a long-pin plug. The depth of the coaxial plug 13 inserted into the coaxial socket 14 is adjustable, and the coaxial socket 14 and the coaxial plug 13 are telescopically connected. The depth of the coaxial plug 13 inserted into the coaxial socket 14 does not affect the connection effect of the coaxial plug 13 and the coaxial socket 14. The telescopic connection method can avoid interference between the coaxial plug 13 and the circuit board when adjusting the installation gap between the probe and the object to be measured.

[0071] Put the first metal-rubber composite washer 9 on the outer screw 301 of the probe mounting base 3 and screw it into the machine housing 2. Use a wrench to tighten it through the hexagonal wrench surface 305 of the mounting base to fix the probe mounting base 3 on the machine housing 2, which is convenient for the installation of the probe 1.

[0072] Then insert the probe 1 into the mounting seat threaded through hole 303 of the probe mounting seat 3, rotate the probe metal screw 104 to adjust the gap between the end face of the probe head body 101 and the target surface to be measured. The scale 103 on the probe can be used as a reference for the gap movement amount, and then put the second metal-rubber composite sealing gasket 10 on the probe metal screw 104, and then screw in the probe locking first nut 6. Finally, use two third screws 12 to screw into the screw holes of the two first nuts 6 respectively to prevent the first nuts 6 from loosening. Finally, place the O-ring sealing flat gasket 5 on the axial surface of the hexagonal wrench surface 305 of the mounting seat of the probe mounting seat 3.

[0073] The first nut 6 is a cap with two axially symmetrical through-threaded holes along its edge. After adjusting the installation clearance between the probe 1 and the target, place the metal-rubber composite screw seal 10 over the metal screw 104 of the probe 1 and tighten it with the first nut 6. Finally, screw the third screw 12 into the through-threaded hole of the first nut 6, ensuring that the top of the third screw 12 is firmly pressed against the flat surface at the top of the probe mounting base 3 to ensure that the first nut 6 is axially locked and prevents it from loosening.

[0074] The assembly process of the two-chamber integrated sensor of this embodiment is as follows:

[0075] like Figure 16 As shown, the signal display circuit board 22 and the transparent window glass 26 are first installed on the upper part of the housing 20 in sequence, and then the third O-ring 23 is placed in the housing undercut 2002, and the fourth O-ring 25 is placed in the top cover undercut 2404. Then, the top cover 24 is put on the housing 20, and the hexagonal wrench surface 2401 of the top cover is clamped by a tool so that the first internal thread 2403 of the top cover 24 and the first external thread 2001 of the housing 20 are threadedly matched and tightened. The assembly of the top cover 24 and the housing 20 is completed.

[0076] like Figure 17As shown, a socket external thread is provided on the outer surface of the coaxial socket 14, and the socket external thread cooperates with the third lower cover threaded through hole 1703 of the lower cover 17, so that the coaxial socket 14 is installed on the lower cover 17, and the signal processing circuit board 18 is positioned and fixed at the same time, thereby completing the assembly of the signal processing circuit board 18 and the lower cover 17.

[0077] like Figure 18 As shown, a second O-ring 19 is placed on the circumferential groove 1705 of the second lower cover, and six second screws 16 are screwed into the six first lower cover screw holes 1701 and the six outer shell threaded blind holes 2003, respectively, to complete the assembly of the outer shell 20 and the lower cover 17. At this point, the first chamber is assembled.

[0078] like Figure 19 As shown, the load-bearing screw sleeve 4 is sleeved on the lower cavity cover 8, and the outer T-step surface 801 of the lower cavity cover 8 serves as the thrust surface of the inner T-step surface 405 of the load-bearing screw sleeve 4, thereby completing the assembly of the lower cavity cover 8 and the load-bearing screw sleeve 4.

[0079] like Figure 20 As shown, after placing the first O-ring 15 on the first lower cover circumferential groove 1702 of the lower cover 17, align the lower chamber cover threaded through hole 803 of the lower chamber cover 8 with the second lower cover threaded through hole 1704, and then screw in the first screw 7 to make it Figure 19 The lower chamber cover 8, the load-bearing nut 4 and the lower cover 17 of the first chamber are assembled.

[0080] like Figure 21 As shown, the outer thread screw 301 of the probe mounting base 3 is covered with the first metal-rubber composite gasket 9 and screwed into the machine housing 2, and is tightened with a wrench through the hexagonal wrench surface 305 of the mounting base to fix the probe mounting base 3 on the machine housing 2, and then the probe 1 is inserted into the mounting base threaded through hole 303 of the probe mounting base 3, and the probe metal screw 104 is rotated to adjust the gap between the end face of the probe head body 101 and the target surface to be measured, and then the second metal-rubber composite sealing gasket 10 is covered on the probe metal screw 104, and then the first nut 6 for locking the probe is screwed in, and finally the third screw 12 is screwed into the screw through hole of the first nut 6 to prevent the first nut 6 from loosening, and finally the O-type sealing flat gasket 5 is placed on the axial surface of the hexagonal wrench surface 305 of the mounting base of the probe mounting base 3.

[0081] like Figure 2 As shown, Figure 21 Probe mount 3 and Figure 20The load-bearing screw sleeve 4 is connected, and the load-bearing screw sleeve 4 is installed on the probe mounting seat 3 through the threaded cooperation of the second internal thread 403 and the second external thread 302. The hexagonal wrench surface 401 of the screw sleeve is screwed to lock the load-bearing screw sleeve 4 and the probe mounting seat 3. Then, three radial anti-loosening screws 11 are screwed into the screw sleeve threaded through holes 406 of the load-bearing screw sleeve 4. When the radial anti-loosening screws 11 are tightened against the hexagonal wrench surface 305 of the mounting seat of the probe mounting seat 3, the load-bearing screw sleeve 4 will not be loosened due to external force. At the same time, Figure 22 As shown, the coaxial plug 13 of the probe 1 can be retractably inserted into the coaxial socket 14 .

[0082] The dual-chamber integrated sensor of this embodiment adopts a two-chamber structure, with the circuit board and probe 1 each occupying an independent chamber, independent of each other and preventing interference with the circuit board by the probe 1. The sensor housing adopts a modular, detachable structure, so disassembly of the circuit board requires only the first chamber, without affecting the second chamber or the probe, facilitating assembly and maintenance of the circuit board. A retractable high-frequency coaxial connector is used between the circuit board and the probe 1, facilitating on-site adjustment of the gap between the probe 1 and the target as needed. This retractable high-frequency coaxial connector prevents interference between the probe 1 and the circuit board when adjusting the installation gap between the probe and the object being measured, and allows for real-time reading of the gap distance via a graduated scale 103. The signal display circuit board 22 can be directly observed from outside the sensor through the transparent window glass 26, enabling on-site digital display of sensor data without increasing the size of the sensor. The two chambers provide a more stable and robust structure, capable of withstanding human intervention. Multiple O-rings are used within the two chambers to enhance the airtightness of the sensor, enhancing the waterproof, dustproof, and corrosion-resistant properties of the circuit board and probe within the sensor chamber.

[0083] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A two-chamber integrated sensor, characterized in that: The invention comprises a probe (1), a signal processing circuit board (18) and a connector, and a first chamber and a second chamber surrounded by a shell, wherein the signal processing circuit board (18) is installed in the first chamber, the probe (1) is arranged in the second chamber, the first chamber is detachably connected to the second chamber, one end of the connector is installed on the signal processing circuit board (18), the other end of the connector passes through the shells of the first chamber and the second chamber and is connected to one end of the probe (1), and the other end of the probe (1) passes through the shell of the second chamber and detects the object to be detected; It also includes: a probe mounting seat (3), a bearing screw sleeve (4), a lower cavity cover (8), a lower cover (17), an outer shell (20) and a top cover (24); the bearing screw sleeve (4) is mounted on the probe mounting seat (3), the lower cavity cover (8) is mounted on the bearing screw sleeve (4), the probe mounting seat (3), the bearing screw sleeve (4) and the lower cavity cover (8) are enclosed to form the second cavity, the lower cover (17) is detachably mounted on the lower cavity cover (8), the outer shell (20) is mounted on the lower cover (17), the top cover (24) is mounted on the outer shell (20), the lower cover (17), the outer shell (20) and the top cover (24) are enclosed to form the first cavity, the connecting piece passes through the lower cover (17) and the lower cavity cover (8) and is connected to one end of the probe (1), and the other end of the probe (1) passes through the probe mounting seat (3) and detects the object to be detected; The lower cover (17), the outer shell (20) and the top cover (24) have the same diameter, and the diameter of the lower chamber cover (8) is smaller than the diameter of the lower cover (17); The bearing screw sleeve (4) is specifically a hollow cylinder, and the interior of the hollow cylinder includes a first bearing screw sleeve through hole (402) and a second bearing screw sleeve screw hole (404) with different diameters. The aperture of the first bearing screw sleeve through hole (402) is smaller than that of the second bearing screw sleeve screw hole (404), so that an inner T-step surface (405) is formed between the first bearing screw sleeve through hole (402) and the second bearing screw sleeve screw hole (404). The lower cavity cover (8) includes an upper part and a lower part, and the diameter of the upper part is smaller than the diameter of the lower part, so that an outer T-step surface (801) is formed between the upper and lower parts. The outer T-step surface (801) serves as a thrust locking surface of the inner T-step surface (405). The two cooperate to enable the bearing screw sleeve (4) and the lower cavity cover (8) to be movably connected together.

2. A two-chamber integrated sensor according to claim 1, characterized in that: The connecting member is specifically a coaxial socket (14), which extends into the second cavity after passing through the lower cover (17) and the lower cavity cover (8). The coaxial socket (14) is connected to the probe (1), so that the signal of the probe (1) is transmitted to the signal processing circuit board (18) after passing through the coaxial socket (14).

3. The two-chamber integrated sensor according to claim 2, characterized in that: The probe (1) comprises a head body (101), a probe metal polished rod (102), a scale (103), a probe metal screw (104) and a coaxial plug (13); the head body (101) is used to sense the distance to an object to be detected; the head body (101) is connected to one end of the probe metal polished rod (102); the other end of the probe metal polished rod (102) is connected to one end of the probe metal screw (104); the other end of the probe metal screw (104) is connected to the coaxial plug (13); the scale (103) is engraved on the probe metal polished rod (102); and the coaxial plug (13) is inserted into the coaxial socket (14).

4. The two-chamber integrated sensor according to claim 3, characterized in that: The coaxial socket (14) is a deep-hole socket, and the coaxial plug (13) is a long-pin plug. The depth of the coaxial plug (13) inserted into the coaxial socket (14) is adjustable. The depth of the coaxial plug (13) inserted into the coaxial socket (14) does not affect the connection effect between the coaxial plug (13) and the coaxial socket (14). At the same time, when adjusting the installation gap between the probe (1) and the object to be measured, interference between the coaxial plug (13) and the signal processing circuit board (18) can be avoided.

5. The two-chamber integrated sensor according to claim 1, characterized in that: The inner ring of the top cover (24) is provided with a first internal thread (2403), the upper part of the outer shell (20) is provided with a first external thread (2001) corresponding to the first internal thread (2403), the first internal thread (2403) and the first external thread (2001) are threadedly matched so that the top cover (24) is installed on the outer shell (20), the inner ring of the load-bearing screw sleeve (4) is provided with a second internal thread (403), the outer ring of the probe mounting seat (3) is provided with a second external thread (302) corresponding to the second internal thread (403), the second internal thread (403) and the second external thread (302) are threadedly matched so that the load-bearing screw sleeve (4) is installed on the probe mounting seat (3).

6. The two-chamber integrated sensor according to claim 1, characterized in that: The housing (20) is provided with a plurality of housing threaded blind holes (2003), the lower cover (17) is provided with a first lower cover screw through hole (1701) corresponding to the housing threaded blind hole (2003), the lower cover (17) is further provided with a second lower cover threaded through hole (1704), the lower chamber cover (8) is provided with a lower chamber cover threaded through hole (803) corresponding to the second lower cover threaded through hole (1704), the housing (20) and the lower cover (17) are connected by a second screw (16), and the lower cover (17) and the lower chamber cover (8) are connected by a first screw (7).

7. The two-chamber integrated sensor according to claim 1, characterized in that: A signal display circuit board (22) is further provided in the first chamber. The signal display circuit board (22) is mounted on the top cover (24). A signal display window (2402) is provided on the top cover (24) at a position directly opposite the signal display circuit board (22).

8. The two-chamber integrated sensor according to claim 1, characterized in that: An aviation socket (21) is also provided on the housing (20), and the aviation socket (21) is electrically connected to the signal processing circuit board (18).

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