Temperature measuring assembly

Abstract

The utility model belongs to the technical field of large-scale unit bearing bush temperature detection devices, and discloses a temperature measurement assembly. The temperature measuring assembly is applied to bearing bush temperature measurement of a large unit and comprises a thermocouple and a wire connected with the thermocouple, the hot end of the thermocouple is in contact with the bearing bush of the large unit, and the temperature measuring assembly is characterized by further comprising a first shell sleeve, a second shell sleeve and a temperature measuring device, a second housing sleeve; the buffer mechanism is configured to counteract the displacement of the first shell sleeve and the second shell sleeve in the radial direction and / or the axial direction; the corrugated pipe is coaxially arranged on the inner side of the first shell sleeve and the inner side of the second shell sleeve; the corrugated pipe is sleeved on the outer side of the thermocouple and / or the wire. According to the utility model, the buffer mechanism and the corrugated pipe are arranged to absorb and counteract axial and radial vibration generated by the temperature measuring assembly in the operation process of the unit, so that lubricating oil is prevented from invading into the shell sleeve, and the vibration resistance and the leakage resistance are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of large unit bearing bush temperature detection device, concretely relates to a temperature measurement subassembly. BACKGROUND

[0002] Large unit bearing bush temperature measurement is mainly for monitoring the working state of bearing bush. Bearing bush plays a key role in supporting rotating shaft neck and reducing friction during the operation of the unit. If the bearing bush temperature is too high, it may cause bearing bush wear and burn, and further cause serious consequences such as unit vibration aggravation, shaft neck damage, and affect the normal operation and service life of the unit.

[0003] In large unit bearing bush temperature measurement, the lead is usually connected with signal conduction by using soft wire and armored wire. During the operation of the unit, vibration is generated, and the cooling lubricating oil is stirred and washed to the lead, which is easy to cause the lead and the temperature measurement element to be separated, and the lead is broken due to abrasion with the shell wall of the unit, resulting in failure of the measurement system and serious impact on safety production.

[0004] Therefore, it is urgent to provide a temperature measurement subassembly with better anti-vibration performance and effective prevention of lubricating oil seepage and washing of the lead to solve the above problems.

[0005] Therefore, the present application is proposed. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to overcome the poor anti-vibration performance and poor anti-leakage performance of the temperature measurement subassembly applied to large unit bearing bush temperature measurement in the prior art, and to provide a temperature measurement subassembly with better anti-vibration and anti-leakage performance.

[0007] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows: a temperature measurement subassembly applied to large unit bearing bush temperature measurement, comprising a thermocouple and a lead connected with the cold end of the thermocouple, the hot end of the thermocouple is in contact with the large unit bearing bush, and the temperature measurement subassembly further comprises:

[0008] A first housing sleeve is arranged on the outer side of the thermocouple and / or lead;

[0009] A second housing sleeve is arranged on the outer side of the thermocouple; the second housing sleeve and the first housing sleeve are both cylindrical structural members; the projection of the second housing sleeve and the projection of the first housing sleeve coincide along the axial direction parallel to the second housing sleeve; and the second housing sleeve is at least partially arranged on the outer side of the first housing sleeve;

[0010] A buffering mechanism is arranged on the side where the first casing sleeve and the second casing sleeve are close to each other, and is configured to offset the displacement of the first casing sleeve and the second casing sleeve in the radial direction and / or the axial direction.

[0011] A bellows is coaxially arranged on the inner side of the first casing sleeve and the second casing sleeve, and is arranged on the outer side of the thermocouple and / or the wire; the extension length of the bellows in the direction parallel to the axis of the second casing sleeve is greater than the extension length of the second casing sleeve.

[0012] According to an embodiment of the utility model, the buffering mechanism comprises:

[0013] A first connecting portion is recessed from the end of the first casing sleeve close to the second casing sleeve towards the direction close to the axis of the first casing sleeve; the first connecting portion comprises a first recessed portion and a second recessed portion, the recessed depth of the first recessed portion is greater than the recessed depth of the second recessed portion, the first recessed portion and the second recessed portion form an L-shaped recess, and the end of the second recessed portion away from the first recessed portion extends to the end face of the first casing sleeve close to the second casing sleeve.

[0014] A second connecting portion is extended from the end of the second casing sleeve close to the first casing sleeve towards the direction close to the axis of the second casing sleeve; the second connecting portion comprises a first protruding portion and a second protruding portion, the first protruding portion is matched with the first recessed portion, and the second protruding portion is matched with the second recessed portion.

[0015] An elastic element is arranged on the first recessed portion of the first connecting portion and / or the first protruding portion of the second connecting portion; the arrangement direction of the elastic element is perpendicular or parallel to the recessed direction of the first recessed portion; a plurality of elastic elements are arranged, and the arrangement directions of at least two elastic elements among the plurality of elastic elements are perpendicular.

[0016] According to an embodiment of the utility model, the temperature measuring assembly further comprises:

[0017] A third casing sleeve is arranged on the side of the first casing sleeve away from the second casing sleeve; the inner diameter of the third casing sleeve is equal to or smaller than the inner diameter of the first casing sleeve; and the end of the wire away from the cold end of the thermocouple at least partially extends out of the third casing sleeve.

[0018] A first fixing structure coaxially connects the third casing sleeve and the first casing sleeve.

[0019] According to an embodiment of the utility model, wherein, the first shell cover and the third shell cover are mutually close to one end, all be provided with first outer thread structure;

[0020] The third shell cover is also provided with second outer thread structure on the outer periphery away from the first outer thread structure;

[0021] The outer periphery of the third shell cover is provided with a receiving ring groove recessed towards its own axis direction;

[0022] The first fixed structure includes:

[0023] The first threaded sleeve is internally provided with a first inner thread structure matched with the first outer thread structure;The first threaded sleeve connects the first shell cover and the third shell cover;

[0024] The second threaded sleeve is internally provided with a second inner thread structure matched with the second outer thread structure;The second threaded sleeve is provided at one end of the first threaded sleeve away from the first shell cover;

[0025] The first annular gasket is provided between the first threaded sleeve and the second threaded sleeve;

[0026] The cap is provided at one end of the second threaded sleeve away from the first threaded sleeve;

[0027] The second annular gasket is provided in the receiving ring groove;Along the axis direction perpendicular to the third shell cover, the projection of the second annular gasket provided in the receiving ring groove at least partially coincides with the projection of the cap.

[0028] According to an embodiment of the utility model, wherein, the second threaded sleeve is provided with a first annular groove, a second annular groove and a third annular groove on the side close to the cap, the axis coincides, and is recessed in the direction away from the cap, the diameter of the first annular groove is greater than the diameter of the second annular groove, and the diameter of the second annular groove is greater than the diameter of the third annular groove;

[0029] The cap is provided with a first annular protrusion, a second annular protrusion and a third annular protrusion on the side close to the second threaded sleeve, the axis coincides, and is protruded in the direction close to the second threaded sleeve, the first annular protrusion corresponds the first annular groove, the second annular protrusion corresponds the second annular groove, and the third annular protrusion corresponds the third annular groove.

[0030] According to an embodiment of the utility model, wherein, the temperature measuring assembly further comprises: a second fixing structure, the second fixing structure is connected at one end of the second shell sleeve away from the first shell sleeve;

[0031] The second fixing structure is provided with an extension shell at one end away from the first shell sleeve, and a hot end of the thermocouple at least partially extends out of the extension shell.

[0032] According to an embodiment of the utility model, wherein, the second shell sleeve is provided with a third external thread structure at one end away from the first shell sleeve;

[0033] The second fixing structure comprises:

[0034] A fixing cylinder is provided with a third internal thread structure matched with the third external thread structure, the extension shell is arranged at one end of the fixing cylinder away from the first shell sleeve, and the fixing cylinder is provided with a fourth external thread structure at one end close to the first shell sleeve.

[0035] A fastening nut is provided with a fourth internal thread structure matched with the fourth external thread structure.

[0036] After the above technical scheme is adopted, the utility model has the following beneficial effects compared with the prior art:

[0037] 1) In the utility model, the buffer mechanism and the bellows are arranged to absorb and offset the axial and radial vibration of the temperature measuring assembly caused during the operation of the unit, and at the same time, the wires and the thermocouple are physically protected, so that the anti-vibration performance and the anti-leakage performance of the temperature measuring assembly are improved.

[0038] 2) In the utility model, the second threaded sleeve and the cap are arranged to form a local sealing structure, when the lubricating oil leaks, the lubricating oil will first enter the first annular groove, at this time, the outer edge of the cap is lifted, the force of the cap pressing the second annular gasket is increased, sealing is realized, the lubricating oil is prevented from flowing into the shell sleeve to abnormally wash the wires, and the overall anti-leakage performance of the temperature measuring assembly is effectively improved.

[0039] The specific embodiments of the utility model will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0040] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the descriptions thereof serve to explain the present application, but do not constitute an improper limitation on the present application. Obviously, the drawings described below are only some embodiments, and other drawings can be obtained by those skilled in the art according to these drawings without any creative effort. In the drawings:

[0041] Figure 1 It is a structure schematic view of a temperature measuring assembly in an embodiment of the present application;

[0042] Figure 2 It is a structure schematic view of a temperature measuring assembly in an embodiment of the present application;

[0043] Figure 3 It is a structure schematic view of a temperature measuring assembly in an embodiment of the present application;

[0044] Figure 4 It is a structure schematic view of a temperature measuring assembly in an embodiment of the present application; Figure 3 It is a structure detail enlarged view of A in the figure;

[0045] Figure 5 It is a structure detail enlarged view of B in the figure; Figure 3 It is a structure detail enlarged view of B in the figure;

[0046] Figure 6 It is a structure schematic view of a temperature measuring assembly in an embodiment of the present application;

[0047] Figure 7 It is a structure schematic view of a second shell sleeve 32 in an embodiment of the present application.

[0048] Main element description in the figure:

[0049] 1, thermocouple; 2, wire; 31, first housing sleeve; 32, second housing sleeve; 33, third housing sleeve; 331, accommodating ring groove; 4, buffer mechanism; 41, first connecting part; 411, first recessed part; 412, second recessed part; 42, second connecting part; 421, first protruding part; 422, second protruding part; 423, hoop groove; 424, hoop; 43, elastic element; 5, bellows; 6, first fixing structure; 61, first threaded sleeve; 62, second threaded sleeve; 621, first annular groove; 622, second annular groove; 623, third annular groove; 624, fourth annular protrusion; 625, fifth annular protrusion; 63, first annular gasket; 64, buckle cap; 641, first annular protrusion; 642, second annular protrusion; 643, third annular protrusion; 644, fourth annular groove; 645, fifth annular groove; 65, second annular gasket; 7, second fixing structure; 71, extension sleeve; 72, fixing cylinder; 73, fastening nut.

[0050] It should be noted that the drawings and the written description are not intended to limit the scope of the present application in any way, but are merely to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0052] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0053] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] As Figures 1 to 7The utility model discloses a temperature measuring assembly, be applied to the bearing temperature measurement of large unit, including thermocouple 1 and with the cold end of thermocouple 1 is connected wire 2, the hot end (temperature measuring end) of thermocouple 1 is contacted with large unit bearing, the temperature measuring assembly still includes:

[0055] First housing cover 31, first housing cover 31 set up in the outside of thermocouple 1 and / or wire 2;

[0056] Second housing cover 32, second housing cover 32 set up in the downside of first housing cover 31 (second housing cover 32 is compared with first housing cover 31 and is closer to the hot end of thermocouple 1), second housing cover 32 set up in the outside of thermocouple 1, second housing cover 32 and first housing cover 31 are all cylindrical structural members, along the axial direction parallel to second housing cover 32, the projection of second housing cover 32 and the projection of first housing cover 31 coincide (first housing cover 31 coincides with the axis of second housing cover 32), second housing cover 32 is at least partially covered in the outside of first housing cover 31;

[0057] Buffer mechanism 4, buffer mechanism 4 set up in the side of first housing cover 31 and second housing cover 32 are close to each other, buffer mechanism 4 is configured to offset the displacement of first housing cover 31 and second housing cover 32 in the radial direction and / or axial direction;

[0058] Bellows 5, bellows 5 are coaxially set up in the inside of first housing cover 31 and second housing cover 32, bellows 5 are covered in the outside of thermocouple 1 and / or wire 2, along the axial direction parallel to second housing cover 32, the extension length of bellows 5 is at least greater than the extension length of second housing cover 32.

[0059] In the utility model, by setting up the first housing cover and the second housing cover of protecting thermocouple and wire, physical protection is provided for thermocouple and wire.In the complex operating environment of large unit, various mechanical collisions, foreign matter interference and the like can exist.Housing cover can prevent thermocouple and wire from being damaged directly by these external factors, plays the role of buffering and protection, and ensures the stability and accuracy of temperature measurement;

[0060] By setting the configuration of the buffer mechanism, the displacement of the first shell sleeve and the second shell sleeve in the radial direction and / or the axial direction can be effectively offset. During the operation of a large unit, vibrations may be generated, which may be transmitted to the temperature measurement assembly. The displacement of the shell sleeve may cause the position of the thermocouple to change, affecting the fit between the hot end and the bearing bush, and thus generating measurement errors. By setting the buffer mechanism, the relative displacement of the shell sleeve caused by vibrations can be reduced, thereby ensuring good contact between the hot end of the thermocouple and the bearing bush;

[0061] By setting the bellows, when the bearing bush may displace or deform slightly due to thermal expansion, mechanical stress, etc. during the operation of the unit, the bellows can expand and contract accordingly, avoiding damage to the thermocouple and the wire due to the deformation or displacement of the bearing bush. At the same time, it can also compensate for the thermal expansion and contraction of the assembly caused by temperature changes to some extent, ensuring the integrity of the temperature measurement assembly and the reliability of the measurement.

[0062] In one specific embodiment of the present embodiment, the second shell sleeve 32 is at least one end away from the first shell sleeve 31 is a shell structure made of wear-resistant, high-temperature-resistant material; for example, stainless steel material (304, 316), high-temperature alloy material (K1320, 3YC52, GH3030), silicon carbide ceramic, metal ceramic, etc.

[0063] In one specific embodiment of the present embodiment, the bellows 5 is an alloy material structure, for example, 304 / 316 stainless steel bellows, copper bellows;

[0064] The axis of the tube body of the bellows 5 is parallel (or coincides) with the axis of the first shell sleeve 31 and the second shell sleeve 32.

[0065] Please refer to the accompanying Figure 1 to the accompanying Figure 3 and the accompanying Figure 5 In one specific embodiment of the present embodiment, the buffer mechanism 4 comprises:

[0066] The first connecting portion 41 is recessed from the end of the first shell sleeve 31 close to the second shell sleeve 32 towards the direction close to its own axis; the first connecting portion 41 comprises a first recessed portion 411 and a second recessed portion 412, the recessed depth of the first recessed portion 411 is greater than the recessed depth of the second recessed portion 412, the first recessed portion 411 and the second recessed portion 412 form an "L" type recess, the second recessed portion 412 extends to the end face of the first shell sleeve 31 close to the second shell sleeve 32 away from the end of the first recessed portion 411; the outer diameter of the first recessed portion of the first shell sleeve 31 is smaller than the outer diameter of the second recessed portion of the first shell sleeve 31;

[0067] The second connecting part 42 is formed by the second shell sleeve 32 extending towards the direction close to its own axis at one end close to the first shell sleeve 31; the second connecting part 42 comprises a first protruding part 421 and a second protruding part 422, the protruding height (extension length) of the first protruding part 421 is greater than the protruding height (extension length) of the second protruding part 422, the first protruding part 421 and the second protruding part 422 form an “L” type protrusion, the second protruding part 422 extends to the end face of the second shell sleeve 32 close to the first shell sleeve 31 at one end away from the first protruding part 421; the first protruding part 421 is matched with the first recessed part 411, and the second protruding part 422 is matched with the second recessed part 412;

[0068] The elastic element 43 is arranged on the first recessed part 411 of the first connecting part 41 and / or the first protruding part 421 of the second connecting part 42; the arrangement direction of the elastic element 43 is perpendicular or parallel to the recessed direction of the first recessed part 411; the elastic element 43 is arranged in multiple, and the arrangement directions of at least two elastic elements 43 in the multiple elastic elements 43 are perpendicular.

[0069] In the utility model, the arrangement of the elastic element 43 enables the elastic element to be elastically deformed when the first shell sleeve 31 and the second shell sleeve 32 move relatively or are subjected to external force, absorbs and converts the energy generated by the external force, plays a buffering role, and avoids damage to components or affects the normal operation of related equipment due to rigid collision. For example, when the equipment is subjected to vibration, impact and the like, the elastic element can effectively buffer the impact force and protect the internal structure;

[0070] Since the arrangement directions of at least two elastic elements in the multiple elastic elements 43 are perpendicular, it means that buffering and energy absorption can be realized in different directions, whether it is horizontal external force or vertical impact, and the buffering and response can be relatively effectively carried out, the overall buffering comprehensiveness and effectiveness are enhanced, and the buffering mechanism can adapt to more complex stress environments;

[0071] By directly designing recesses and protrusions on the shell sleeve to form connecting parts and arranging elastic elements on the connecting parts, the overall structure of the buffering mechanism is relatively compact, does not occupy too much external space, is beneficial to the layout of the entire equipment in limited space, and is especially suitable for application scenarios with high space requirements, such as the buffering structure arrangement inside some precision instruments and small devices;

[0072] The buffer-related components are arranged by using the structure of the shell sleeve, the space around the shell sleeve is reasonably utilized, the buffer device installation space of large volume is not additionally configured, the space utilization is improved, the overall miniaturization design of the equipment is facilitated, and the buffer function is realized.

[0073] In one specific embodiment of the present embodiment, the elastic element 43 is a spring.

[0074] In one specific embodiment of the present embodiment, the projection of the first protruding part 421 along the axis direction perpendicular to the second shell sleeve 32 is smaller than the projection of the first recessed part 411.

[0075] Please refer to the accompanying Figure 3 and the accompanying Figure 5 In one specific embodiment of the present embodiment, the first protruding part 421 comprises three circumferential edges of a first edge, a second edge and a third edge in turn and perpendicularly two by two; the first edge and the third edge are parallel to each other; the first edge and / or the third edge is / are provided with a first groove, the second edge is provided with a first groove, and the corresponding position of the corresponding edge of the first recessed part 411 is also provided with a second groove corresponding to the first groove, and the first groove and the second groove form an accommodation space for accommodating the elastic element 43.

[0076] The elastic element 43 is arranged in the accommodation space formed by the first groove and the second groove.

[0077] In one specific embodiment of the present embodiment, the elastic element 43 is at least fixedly connected to the groove bottom of one of the first groove and the second groove.

[0078] In one specific embodiment of the present embodiment, the protruding structure formed by the first protruding part 421 and the second protruding part 422 of the first connecting part 41 is an arc-shaped protruding structure, the first connecting part 41 is provided with a plurality of protruding structures formed by the first protruding part 421 and the second protruding part 422, and the plurality of protruding structures are circumferentially arranged.

[0079] The recessed structure formed by the first recessed part 411 and the second recessed part 412 corresponds to the protruding structure in position and in number.

[0080] In another specific embodiment of the present embodiment, the protruding structure formed by the first protruding part 421 and the second protruding part 422 of the first connecting part 41 is an annular protruding structure.

[0081] The recessed structure formed by the first recessed part 411 and the second recessed part 412 is an annular recessed structure, and the recessed structure is arranged corresponding to the protruding structure.

[0082] In one specific implementation of the embodiment, the second protruding portion 422 of the second connecting portion 42 has a certain elasticity, and the first protruding portion 421 of the second connecting portion 42 can be aligned in position with the first recessed portion 411 of the first connecting portion 41 by bending the second protruding portion 422 outward (away from the axis direction of the second shell sleeve 32), and then releasing the second protruding portion 422 to reset it.

[0083] Please refer to the accompanying drawings Figure 7 In one specific implementation of the embodiment, the outer side (the side of the second protruding portion 422 away from the axis of the second shell sleeve 32) of the second protruding portion 422 of the second connecting portion 42 is provided with an arc-shaped (corresponding to a plurality of arc-shaped protruding structures of the second connecting portion 42) or ring-shaped (corresponding to a ring-shaped protruding structure of the second connecting portion 42) hoop groove 423, and a hoop 424 is arranged in the hoop groove 423. The arrangement of the hoop 424 can ensure that the second protruding portion 422 of the second connecting portion 42 is in close contact (with a small gap therebetween) with the second recessed portion 412 of the first connecting portion 41.

[0084] Please refer to the accompanying drawings Figure 1 to the accompanying drawings Figure 3 In one specific implementation of the embodiment, the temperature measuring assembly further comprises:

[0085] The third shell sleeve 33 is arranged on the side of the first shell sleeve 31 away from the second shell sleeve 32 (the third shell sleeve 33 is arranged on the upper side of the first shell sleeve 31); the inner diameter of the third shell sleeve 33 is equal to or smaller than the inner diameter of the first shell sleeve 31; and the end of the lead wire 2 away from the cold end of the thermocouple 1 at least partially extends out of the third shell sleeve 33.

[0086] The first fixing structure 6 coaxially connects the third shell sleeve 33 and the first shell sleeve 31; the axis of the third shell sleeve 33 coincides with the axis of the first shell sleeve 31.

[0087] In one specific implementation of the embodiment, the buffer structure 4 is arranged close to the first fixing structure 6 and away from the second fixing structure 7.

[0088] In one specific implementation of the embodiment, the inner peripheral wall of the first shell sleeve 31 or the inner peripheral wall of the third shell sleeve 33 is provided with a support platform (not shown in the drawings) extending towards the direction close to its own axis; the cold end of the thermocouple 1 and / or the end of the lead wire 2 connected to the cold end of the thermocouple 1 are placed on or hooked on the support platform.

[0089] In one specific implementation of the embodiment, the first fixed structure 6 corresponds to the inside of the first casing sleeve 31 (which contains particles of insulating material along the position of the wire 2 and / or the thermocouple 1), which is filled with particles of insulating material, such as polystyrene (PS) particles, polyvinyl chloride (PVC) particles, polypropylene (PP) particles, nitrile rubber (NBR) particles, silicone rubber particles, alumina ceramic particles, boron nitride (BN) ceramic particles, etc.

[0090] Please refer to the accompanying drawings Figure 3 In one specific implementation of the embodiment, the first casing sleeve 31 and the third casing sleeve 33 are each provided with a first external thread structure at one end close to each other;

[0091] The third casing sleeve 33 is further provided with a second external thread structure on the outer periphery away from the first external thread structure;

[0092] The third casing sleeve 33 is provided with a receiving ring groove 331 recessed towards its own axis direction on the outer periphery;

[0093] The first fixed structure 6 comprises:

[0094] A first threaded sleeve 61, which is provided with a first internal thread structure inside that matches the first external thread structure; the first internal thread structure of the first threaded sleeve 61 is connected to the first external thread structure of the first casing sleeve 31 and the first external thread structure of the third casing sleeve 33 at the same time, and the first threaded sleeve 61 connects the first casing sleeve 31 and the third casing sleeve 33;

[0095] A second threaded sleeve 62, which is provided with a second internal thread structure inside that matches the second external thread structure; the second threaded sleeve 62 is provided at one end of the first threaded sleeve 61 away from the first casing sleeve 31;

[0096] A first ring-shaped gasket 63, which is provided between the first threaded sleeve 61 and the second threaded sleeve 62;

[0097] A cap 64, which is capped at one end of the second threaded sleeve 62 away from the first threaded sleeve 61;

[0098] A second ring-shaped gasket 65, which is provided in the receiving ring groove 331; along the direction perpendicular to the axis of the third casing sleeve 33, the projection of the second ring-shaped gasket 65 provided in the receiving ring groove 331 at least partially coincides with the projection of the cap 64.

[0099] In the present invention, the first threaded sleeve 61, through its internal first internal thread structure, mates with the first external thread structures of the first and third outer shells 31, 33, thereby securely connecting the first and third outer shells 31, 33. This threaded connection provides high strength, capable of withstanding certain axial forces and torques, and preventing loosening or separation between the first and third outer shells 31, 33 during normal use of the device.

[0100] The second threaded sleeve 62 cooperates with the second external thread structure of the third outer shell 33, further strengthening the connection stability of one end of the third outer shell 33. Located at the end of the first threaded sleeve 61 away from the first outer shell 31, it provides additional fixing, effectively dispersing external forces and enhancing the stability of the overall structure, especially when subjected to external tension or impact.

[0101] The first annular gasket 63 is positioned between the first threaded sleeve 61 and the second threaded sleeve 62, filling any small gap therebetween and providing a seal to prevent dust, moisture, and other impurities from entering the device. The second annular gasket 65 is positioned within the receiving annular groove 331 of the third outer shell 33, with its projection at least partially overlapping that of the buckle cap 64. This also helps enhance sealing performance, particularly by effectively blocking any lubricant leakage in a direction perpendicular to the axis of the third outer shell 33.

[0102] At the same time, the annular gasket also has a certain buffering performance. When the equipment is subjected to vibration or slight collision, the annular gasket can absorb and disperse part of the energy, reduce the rigid collision between the outer shells, and thus protect the internal components from damage.

[0103] In a specific implementation of this embodiment, the first annular gasket 63 and / or the second annular gasket 65 is a rubber gasket or a silicone gasket.

[0104] Please see the attached Figure 1 To the attached Figure 4 In a specific implementation of this embodiment, a first annular groove 621, a second annular groove 622, and a third annular groove 623 are provided on a side of the second threaded sleeve 62 close to the buckle cap 64, with their axes coincident with each other and recessed in a direction away from the buckle cap 64. The diameter of the first annular groove 621 is larger than that of the second annular groove 622, and the diameter of the second annular groove 622 is larger than that of the third annular groove 623.

[0105] A first annular protrusion 641, a second annular protrusion 642 and a third annular protrusion 643 are provided on one side of the buckle cap 64 close to the second threaded sleeve 62, and the axes thereof coincide with each other and protrude (extend) toward the direction close to the second threaded sleeve 62. The diameter of the first annular protrusion 641 is larger than the diameter of the second annular protrusion 642, and the diameter of the second annular protrusion 642 is larger than the diameter of the third annular protrusion 643; the first annular protrusion 641 corresponds to the first annular groove 621, the second annular protrusion 642 corresponds to the second annular groove 622, and the third annular protrusion 643 corresponds to the third annular groove 623.

[0106] In a specific implementation of this embodiment, the protrusion height (extension length) of the first annular protrusion 641 is less than or equal to the protrusion height (extension length) of the second annular protrusion 642; the protrusion height (extension length) of the second annular protrusion 642 is less than or equal to the protrusion height (extension length) of the third annular protrusion 643;

[0107] Correspondingly, the first annular groove 621 , the second annular groove 622 and the third annular groove 623 have corresponding recessed depths.

[0108] It should be noted that the annular protrusion corresponds to the annular groove in terms of position and length; however, it is inevitable that (taking the first annular groove 621 and the first annular protrusion 641 as an example) after the first annular protrusion 641 extends into the first annular groove 621, the extended end of the first annular protrusion 641 is at a distance from the bottom of the first annular groove 621.

[0109] In a specific implementation of this embodiment, the distance between the extended end of the first annular protrusion 641 and the bottom of the first annular groove 621 is greater than or equal to the distance between the extended end of the second annular protrusion 642 and the second annular groove 622; the distance between the extended end of the second annular protrusion 642 and the second annular groove 622 is greater than or equal to the distance between the extended end of the third annular protrusion 643 and the third annular groove 623.

[0110] Please see the attached Figure 1 To the attached Figure 4In a specific implementation of the embodiment, the second threaded sleeve 62 is further provided with a fourth annular protrusion 624 and a fifth annular protrusion 625, which are coaxial with each other and protrude (extend) towards the side close to the cap 64, the diameter of the fourth annular protrusion 624 is smaller than that of the first annular groove 621 and larger than that of the second annular groove 622, and the diameter of the fifth annular protrusion 625 is smaller than that of the second annular groove 622 and larger than that of the third annular groove 623.

[0111] The cap 64 is provided with a fourth annular groove 644 and a fifth annular groove 645, which are coaxial with each other and recessed towards the side away from the second threaded sleeve 62, the diameter of the fourth annular groove 644 is smaller than that of the first annular protrusion 641 and larger than that of the second annular protrusion 642, and the diameter of the fifth annular groove 645 is smaller than that of the second annular protrusion 642 and larger than that of the third annular protrusion 643; the fourth annular groove 644 corresponds to the fourth annular protrusion 624, and the fifth annular groove 645 corresponds to the fifth annular protrusion 625.

[0112] In the utility model, through setting up the second threaded sleeve 62 and the cap 64, the sealing structure is formed, when the lubricating oil leaks, the lubricating oil will first enter the first annular groove 621, at this time, the outer side edge (the edge of the side away from the axis) of the cap 64 is lifted, the force of the cap 64 extruding the second annular gasket 65 increases, and the lubricating oil is more difficult to enter the second annular groove 622 (the path is longer and the height is higher), when the lubricating oil flows into the second annular groove 622, the lifting degree of the outer side edge of the cap is greater, the sealing is realized, the lubricating oil is prevented from flowing into the shell sleeve to abnormally wash the conductor, and the overall anti-leakage performance of the temperature measuring assembly is effectively improved.

[0113] In a specific implementation of the embodiment, the protrusion height (extension length) of the fourth annular protrusion 624 and the fifth annular protrusion 625 is equal and greater than the protrusion height (extension length) of the first annular protrusion 641, the second annular protrusion 642 and the third annular protrusion 643.

[0114] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 and the accompanying drawings Figure 6 In a specific implementation of the embodiment, the temperature measuring assembly further comprises a second fixing structure 7 connected to the end of the second shell sleeve 32 away from the first shell sleeve 31.

[0115] The hot end of the thermocouple 1 at least partially extends out of the second fixing structure 7 away from one end of the first outer sleeve 31.

[0116] In another specific embodiment of the present embodiment, the second fixing structure 7 away from one end of the first outer sleeve 31 is provided with an extension sleeve 71, and the hot end of the thermocouple 1 at least partially extends out of the extension sleeve 71.

[0117] Please refer to the accompanying Figure 1 , the accompanying Figure 2 and the accompanying Figure 6 , in a specific embodiment of the present embodiment, the second outer sleeve 32 away from one end of the first outer sleeve 31 is provided with a third outer threaded structure;

[0118] The second fixing structure 7 comprises:

[0119] The fixed cylinder 72 is provided with a third inner threaded structure matched with the third outer threaded structure; the extension sleeve 71 is arranged at one end of the fixed cylinder 72 away from the first outer sleeve 31; and the fixed cylinder 72 is provided with a fourth outer threaded structure at one end close to the first outer sleeve 31;

[0120] The fastening nut 73 is provided with a fourth inner threaded structure matched with the fourth outer threaded structure.

[0121] In the present utility model, the second fixing structure 7 is arranged, which has positive significance for improving the overall stability, sealing property and replaceability of the temperature measuring assembly.

[0122] The above is only the preferred embodiment of the present utility model, and does not limit the present utility model in any form. Although the present utility model has been disclosed as above, it is not intended to limit the present utility model. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present utility model, and the equivalent embodiments with equivalent changes can be obtained. The implementation schemes in the above-mentioned embodiments can be further combined or replaced. Any simple modification, equivalent change and modification of the above-mentioned embodiments according to the technical essence of the present utility model are still within the scope of the present utility model.

Claims

1. A temperature measuring assembly, used for measuring the temperature of a bearing bush of a large unit, comprising a thermocouple (1) and a wire (2) connected to the cold end of the thermocouple (1), wherein the hot end of the thermocouple (1) contacts the bearing bush of the large unit, and characterized in that: The temperature measurement component further includes: A first outer shell (31), the first outer shell (31) being arranged outside the thermocouple (1) and / or the wire (2); a second outer shell (32), the second outer shell (32) being arranged outside the thermocouple (1); the second outer shell (32) and the first outer shell (31) being both cylindrical structural members; along an axial direction parallel to the second outer shell (32), a projection of the second outer shell (32) and a projection of the first outer shell (31) are overlapped; the second outer shell (32) is at least partially sleeved outside the first outer shell (31); a buffer mechanism (4), the buffer mechanism (4) being arranged on a side where the first outer shell (31) and the second outer shell (32) are close to each other; the buffer mechanism (4) being configured to offset radial and / or axial displacement of the first outer shell (31) and the second outer shell (32); A bellows (5) is coaxially arranged on the inner sides of the first outer shell (31) and the second outer shell (32); the bellows (5) is sleeved on the outer sides of the thermocouple (1) and / or the wire (2); and an extension length of the bellows (5) in a direction parallel to the axis of the second outer shell (32) is greater than an extension length of the second outer shell (32).

2. A temperature measuring component according to claim 1, characterized in that: The buffer mechanism (4) comprises: A first connecting portion (41), wherein the first connecting portion (41) is formed by an end of the first outer shell (31) close to the second outer shell (32) being recessed in a direction close to the axis thereof; the first connecting portion (41) comprises a first recessed portion (411) and a second recessed portion (412); the recessed depth of the first recessed portion (411) is greater than the recessed depth of the second recessed portion (412); the first recessed portion (411) and the second recessed portion (412) form an "L"-shaped recess; the second recessed portion (412) extends from an end of the first recessed portion (411) away from the first recessed portion to an end surface of the first outer shell (31) close to the second outer shell (32); a second connecting portion (42), the second connecting portion (42) being formed by extending from one end of the second outer shell (32) close to the first outer shell (31) toward its own axis; the second connecting portion (42) comprising a first protruding portion (421) and a second protruding portion (422), the first protruding portion (421) being adapted to the first recessed portion (411), and the second protruding portion (422) being adapted to the second recessed portion (412); An elastic element (43), wherein the elastic element is arranged on the first recessed portion (411) of the first connecting portion (41) and / or the first raised portion (421) of the second connecting portion (42); the arrangement direction of the elastic element (43) is perpendicular or parallel to the recessed direction of the first recessed portion (411); a plurality of the elastic elements (43) are arranged, and the arrangement directions of at least two of the plurality of elastic elements (43) are perpendicular to each other.

3. A temperature measurement component according to claim 1, characterized in that: The temperature measurement component also includes: a third outer shell (33), the third outer shell (33) being arranged on a side of the first outer shell (31) away from the second outer shell (32); an inner diameter of the third outer shell (33) being equal to or smaller than an inner diameter of the first outer shell (31); an end of the wire (2) away from the cold end of the thermocouple (1) at least partially extending out of the third outer shell (33); A first fixing structure (6) coaxially connects the third outer shell (33) and the first outer shell (31).

4. A temperature measurement component according to claim 3, characterized in that: The first outer shell (31) and the third outer shell (33) are both provided with a first external thread structure at one end close to each other; A second external thread structure is further provided on the outer periphery of the third outer shell (33) away from the first external thread structure; The outer periphery of the third outer shell (33) is provided with an accommodating annular groove (331) which is recessed toward the axis of the third outer shell; The first fixing structure (6) comprises: a first threaded sleeve (61), wherein a first internal threaded structure adapted to the first external threaded structure is provided inside the first threaded sleeve (61); the first threaded sleeve (61) connects the first outer shell (31) and the third outer shell (33); a second threaded sleeve (62), wherein a second internal threaded structure adapted to the second external threaded structure is provided inside the second threaded sleeve (62); the second threaded sleeve (62) is provided at an end of the first threaded sleeve (61) away from the first outer sleeve (31); a first annular gasket (63), the first annular gasket (63) being arranged between the first threaded sleeve (61) and the second threaded sleeve (62); a buckle cap (64), the buckle cap (64) being buckled on an end of the second threaded sleeve (62) away from the first threaded sleeve (61); A second annular gasket (65) is arranged in the receiving annular groove (331); along the axial direction perpendicular to the third outer shell (33), the projection of the second annular gasket (65) arranged in the receiving annular groove (331) at least partially overlaps with the projection of the buckle cap (64).

5. A temperature measurement component according to claim 4, characterized in that: A first annular groove (621), a second annular groove (622) and a third annular groove (623) are provided on a side of the second threaded sleeve (62) close to the buckle cap (64), the axes of which coincide and are recessed in a direction away from the buckle cap (64); the diameter of the first annular groove (621) is larger than the diameter of the second annular groove (622), and the diameter of the second annular groove (622) is larger than the diameter of the third annular groove (623); A first annular protrusion (641), a second annular protrusion (642) and a third annular protrusion (643) are provided on one side of the buckle cap (64) close to the second threaded sleeve (62), the axes of which coincide and protrude toward the second threaded sleeve (62). The first annular protrusion (641) corresponds to the first annular groove (621), the second annular protrusion (642) corresponds to the second annular groove (622), and the third annular protrusion (643) corresponds to the third annular groove (623).

6. A temperature measurement component according to any one of claims 1 to 5, characterized in that: The temperature measurement assembly further comprises: a second fixing structure (7), the second fixing structure (7) being connected to an end of the second outer shell (32) away from the first outer shell (31); An extension shell (71) is provided at one end of the second fixing structure (7) away from the first outer shell (31), and the hot end of the thermocouple (1) at least partially extends out of the extension shell (71).

7. A temperature measurement component according to claim 6, characterized in that: An end of the second outer shell (32) away from the first outer shell (31) is provided with a third external thread structure; The second fixing structure (7) comprises: A fixing cylinder (72), wherein the fixing cylinder (72) is provided with a third internal thread structure adapted to the third external thread structure; the extension shell (71) is provided at an end of the fixing cylinder (72) away from the first outer shell (31); and the end of the fixing cylinder (72) close to the first outer shell (31) is provided with a fourth external thread structure; A fastening nut (73), wherein the fastening nut (73) is provided with a fourth internal thread structure adapted to the fourth external thread structure.

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