CN211696726U

CN211696726U - Vibration-proof thermal resistor

Info

Publication number: CN211696726U
Application number: CN202020283139.2U
Authority: CN
Inventors: 刘振波; 于淑萍
Original assignee: Jumo Automation Dalian Co ltd
Current assignee: Jumo Automation Dalian Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-16
Anticipated expiration: 2030-03-10

Abstract

The utility model provides a antivibration thermal resistance, include: the temperature measuring device comprises a plug, a sheath, a fixed sleeve, a vibration damper, a temperature measuring chip and a first stopper; the sheath includes: the sheath body and the probe rod; the fixing sleeve comprises a fixing sleeve body and a threaded connecting part; the fixed sleeve is provided with a through hole; the temperature measuring chip is positioned in the accommodating hole and is arranged at the bottom end of the probe rod; the fixing sleeve is sleeved outside the probe rod, and the fixing sleeve body is in contact connection with the sheath body; the vibration damping device is sleeved outside the probe rod and is arranged between the fixed sleeve and the probe rod, one end of the vibration damping device is in contact connection with the first annular groove, and the other end of the vibration damping device is in contact connection with the first blocking piece. Due to the arrangement of the spring and the fixed sleeve structure, in the working process of the temperature measuring device, the temperature measuring end is always in close contact with the temperature surface to be measured under the action force of the spring, so that the temperature measuring accuracy is ensured, and meanwhile, the influence of vibration on the temperature measuring precision can be reduced; the fixed cover is in threaded connection with the temperature measuring equipment, so that the sensor is convenient to replace.

Description

Vibration-proof thermal resistor

Technical Field

The utility model relates to an industrial production equipment temperature measurement field especially relates to a antivibration thermal resistance.

Background

In industrial temperature measurement, vibration equipment (such as a compressor and the like) installed in an outdoor environment is often encountered, and environmental rain, high-frequency vibration and the like need to be overcome for temperature measurement of the vibration equipment installed in the outdoor environment.

In the prior art, in order to avoid rainwater and the like from entering the measuring inner space, the welding type fixed thread is usually adopted to ensure sealing, but the thread and the sheath are of a rigid structure, so that the tight contact between the measuring end and the measured object cannot be ensured under the vibration condition, a larger measuring error exists, and the service life of the sensor is shorter.

SUMMERY OF THE UTILITY MODEL

The utility model provides a antivibration thermal resistance to overcome above-mentioned technical problem.

The utility model provides a antivibration thermal resistance, include: the temperature measuring device comprises a plug, a sheath, a fixed sleeve, a vibration damper, a temperature measuring chip and a first stopper;

the sheath includes: the sheath body and the probe rod; the sheath body and the probe rod are integrally formed with the central axis; the first stopper is fixedly connected with the free end of the probe rod; the sheath is provided with a containing hole, the containing hole and the sheath body are coaxial, and the containing hole is communicated with the outside at one end of the sheath body; a first annular groove is formed in the inner wall of the fixed sleeve;

the fixing sleeve comprises a fixing sleeve body and a threaded connecting part; the fixed sleeve body and the threaded connecting part are integrally formed with the central axis; the fixing sleeve is provided with a through hole, and the through hole and the fixing sleeve body have the same central axis;

the plug is connected with the temperature measuring chip through a silver wire;

the plug is clamped with the sheath body, and the temperature measuring chip is positioned in the accommodating hole and is arranged at the bottom end of the probe rod;

the fixing sleeve is sleeved outside the probe rod, and the fixing sleeve body is in contact connection with the sheath body; the vibration damping device is sleeved outside the probe rod and positioned between the fixed sleeve and the probe rod, one end of the vibration damping device is in contact connection with the first annular groove, and the other end of the vibration damping device is in contact connection with the first stopper.

Further, a second annular groove is formed in the inner wall of the sheath body;

the diameter of the second ring groove is smaller than that of the first ring groove;

a first O-shaped ring is arranged between the second annular groove and the probe rod.

Further, the damping device is a spring.

Furthermore, a second retaining ring is arranged between the first annular groove and the probe rod, and the second retaining ring is in contact connection with the vibration damping device.

Furthermore, one end of the probe rod, which is used for accommodating the temperature measuring chip, is filled with heat-conducting silicone grease.

Further, when the fixing sleeve is in contact with the sheath body, the distance a between the first blocking piece and the second blocking ring is 1-2mm smaller than the static length of the spring.

Compared with the prior art, antivibration thermal resistance have following beneficial effect:

due to the arrangement of the spring and the fixed sleeve structure, in the working process of the temperature measuring device, the temperature measuring end is always in close contact with the temperature surface to be measured under the action force of the spring, the temperature measuring accuracy is ensured, and meanwhile, the service life of the sensor can be prolonged; the fixed cover is in threaded connection with the temperature measuring equipment, so that the sensor is convenient to replace.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic view of the whole structure of the anti-vibration thermal resistor of the present invention;

FIG. 2 is a schematic view of the structure of the anti-vibration thermal resistance sheath of the present invention;

FIG. 3 is a schematic view of the structure of the anti-vibration thermal resistance fixing sleeve of the present invention;

fig. 4 is an enlarged view of a in fig. 1 of the vibration-proof thermal resistor of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, for the utility model relates to a antivibration thermal resistance overall structure sketch map, include: the plug comprises a plug 1, a sheath 3, a fixed sleeve 6, a vibration damper 7, a temperature measuring chip 11 and a first stopper 9;

the sheath 3 is used for protecting and guiding the temperature measurement chip 11 to enter the device to be measured 12 and measuring the temperature of the surface to be measured 13, as shown in fig. 2, the sheath is a schematic diagram of the sheath structure of the present invention; the sheath 3 includes: the plug comprises a sheath body 31 and a probe rod 32, wherein the sheath body 31 is a hexagonal prism, and is easy to clamp by a clamping device so as to be fastened with the plug 1; the sheath body 31 and the probe 32 are integrally formed with the central axis; the first stopper 9 is annular and is welded and fixed with the free end of the probe rod 32; the sheath 3 is provided with a receiving hole which is coaxial with the sheath body 31 and is communicated with the outside at one end of the sheath body 31; as shown in fig. 4, which is an enlarged view of a in fig. 1 of the present invention, a first ring groove 63 is formed on an inner wall of the fixing sleeve 6; as shown in fig. 3, for the fixing sleeve 6 of the structure schematic diagram of the fixing sleeve of the present invention includes: the fixing sleeve body 61 is a hexagonal prism, so that the fixing sleeve body 61 is easy to mount and dismount by tools such as a wrench and the like, and is fastened or separated with the equipment to be tested 12, and the sensor is convenient to mount and replace; the fixing sleeve body 61 and the threaded connecting part 62 are integrally formed with the same central axis; the fixing sleeve 6 is provided with a through hole which is the same as the central axis of the fixing sleeve body 61; the plug 1 is connected with the temperature measuring chip 11 through a silver wire; the plug 1 is clamped with the sheath body 31, the temperature measuring chip 11 is positioned in the accommodating hole and is arranged at the bottom end of the probe rod 32, and the bottom end of the probe rod 32 is contacted with the surface to be measured 13, so that the temperature of the surface to be measured 13 is measured; the fixing sleeve 6 is sleeved outside the probe rod 32, and the fixing sleeve body 61 is in contact connection with the sheath body 31; the vibration damping device 7 is a spring, the spring is sleeved outside the probe rod 32 and is positioned between the fixed sleeve 6 and the probe rod 32, one end of the spring is in contact connection with the first annular groove 63, and the other end of the spring is in contact connection with the first stopper 9; in the working process, the bottom end of the probe rod 32 is always in close contact with the temperature surface 13 to be measured under the action of the spring, so that the temperature measurement accuracy of the temperature measurement chip 11 is ensured.

Further, in order to prevent outdoor rainwater or impurities from entering the device to be measured 12, as shown in fig. 4, a second annular groove 64 is further disposed on the inner wall of the sheath body 31; the diameter of the second ring groove 64 is smaller than that of the first ring groove 63; an O-ring 4 is disposed between the second annular groove 64 and the probe 32.

Further, in order to prevent the edge of the spring from damaging the O-ring 4, a second retaining ring 5 is disposed between the first ring groove 63 and the probe 32, and the second retaining ring 5 is in contact connection with the spring.

Further, in order to reduce the shaking of the temperature measuring chip 11 at the bottom end of the probe rod 32 due to the vibration of the device 12 to be measured, the end of the probe rod 32, which contains the temperature measuring chip 11, is filled with the heat-conducting silicone grease 10.

Further, when the fixed sleeve 6 contacts the sheath body 31, the distance a between the first stopper 9 and the second stopper 5 is 1-2mm smaller than the static length of the spring, which is beneficial for the spring to have enough elasticity when the temperature measuring device 12 shakes, so that the bottom end of the probe rod 32 is in close contact with the surface 13 to be measured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A vibration-proof thermal resistor, comprising: the temperature measuring device comprises a plug (1), a sheath (3), a fixing sleeve (6), a vibration damper (7), a temperature measuring chip (11) and a first stopper (9);

the sheath (3) comprises: a sheath body (31) and a probe (32); the sheath body (31) and the probe rod (32) are integrally formed; the first stopper (9) is fixedly connected with the probe rod (32); the sheath (3) is provided with a containing hole which is communicated with the outside at one end of the sheath body (31); a first annular groove (63) is formed in the inner wall of the fixed sleeve (6);

the fixing sleeve (6) comprises a fixing sleeve body (61) and a threaded connecting part (62); the fixed sleeve body (61) and the threaded connecting part (62) are integrally formed with the central axis; the fixing sleeve (6) is provided with a through hole which is the same as the central axis of the fixing sleeve body (61);

the plug (1) is connected with the temperature measuring chip (11) through a silver wire;

the plug (1) is clamped with the sheath body (31), and the temperature measuring chip (11) is positioned in the accommodating hole and is arranged at the bottom end of the probe rod (32);

the fixing sleeve (6) is sleeved outside the probe rod (32), and the fixing sleeve body (61) is in contact connection with the sheath body (31);

the vibration reduction device (7) is used for reducing vibration of the thermal resistor and the temperature surface (13) to be measured.

2. The thermal resistor according to claim 1, characterized in that the inner wall of the sheath body (31) is further provided with a second ring groove (64);

the diameter of the second ring groove (64) is smaller than that of the first ring groove (63);

a first O-shaped ring (4) is arranged between the second annular groove (64) and the probe rod (32).

3. The thermal resistor according to claim 1, wherein the damping device (7) is a spring, the spring is sleeved outside the probe rod (32) and is located between the fixing sleeve (6) and the probe rod (32), one end of the damping device (7) is in contact connection with the first annular groove (63), and the other end of the damping device is in contact connection with the first stopper (9).

4. A thermal resistor according to claim 3, wherein a second retaining ring (5) is arranged between the first ring groove (63) and the probe rod (32), and the second retaining ring (5) is in contact connection with the damping device (7).

5. The thermal resistor according to claim 4, characterized in that the end of the probe rod (32) containing the temperature measuring chip (11) is filled with a heat-conducting silicone grease (10).

6. A thermal resistor according to claim 5, characterised in that the distance a of said first stop (9) from said second stop ring (5) when said fixing sheath (6) is in contact with said sheath body (31) is 1-2mm less than the static length of said spring.