CN213748813U

CN213748813U - Bimetal thermometer

Info

Publication number: CN213748813U
Application number: CN202022942235.6U
Authority: CN
Inventors: 张政松
Original assignee: Tour Instruments Jiangsu Co ltd
Current assignee: Tour Instruments Jiangsu Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-07-20
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to the technical field of instruments and meters, and particularly provides a bimetallic thermometer, which comprises a bearing sleeve and a probe rod, wherein the probe rod is sleeved with a protective cover, the protective cover is convexly provided with a limiting disc, the bearing sleeve is sleeved with a sealing sleeve in a threaded manner, a cover plate is arranged in the sealing sleeve, the sealing sleeve is provided with a locking assembly, the locking assembly comprises a holding ring, a moving block, a linkage screw rod and a linkage pin shaft which is used for inserting and connecting the linkage screw rod and the moving block, the moving block is slidably inserted in the holding ring, the moving block is slidably sleeved on the linkage screw rod, the moving block is inclined relative to the axial lead of the protective cover, the linkage pin shaft can be inserted on the moving block and the linkage screw rod in a relatively rotating manner, the linkage screw rod is sleeved with a holding nut in a matching manner, when the holding nut is screwed on the linkage screw rod, the inclination state of the moving block relative to the axial lead of the protective cover is changed, the movable block drives the linkage screw and the protective cover to move towards the cover plate through the linkage pin shaft, and the close contact degree of the limiting disc and the cover plate is improved.

Description

Bimetal thermometer

Technical Field

The utility model relates to an instrument and meter technical field especially relates to a bimetal thermometer.

Background

When the thermometer is used for monitoring the real-time temperature in a production system, in order to reduce the probability of collision damage of a probe rod on the thermometer during installation, a protective sleeve is often covered on the probe rod of the thermometer, when the protective sleeve enters the production system along with the probe rod, the protective sleeve replaces collision between the probe rod and the production system, the probability of collision damage of the probe rod is reduced, after the protective sleeve is additionally arranged on the probe rod, the volume of the probe rod is increased, the gap area between the probe rod and the production system is increased, the tightness between the probe rod and the production system is reduced, and gas with high volatility in the production system is easy to leak from a gap between the probe rod and the production system.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the joint between the thermometer and the production system after the protective cover is added is easy to leak.

The utility model provides a technical scheme that its technical problem adopted is: a bimetal thermometer comprises a bearing sleeve and a probe rod inserted into the bearing sleeve, wherein a protective cover is sleeved on the probe rod, a limiting disc is arranged on the protective cover in a protruding mode, the limiting disc is attached to the end face of the bearing sleeve, a sealing sleeve is sleeved on the bearing sleeve in a threaded mode, a cover plate is arranged in the sealing sleeve, the cover plate and the bearing sleeve clamp the limiting disc, and a locking assembly is installed on the sealing sleeve;

the locking assembly comprises a butting ring arranged on the cover plate, a movable block slidably arranged on the butting ring, a linkage screw rod corresponding to the movable block and fixedly arranged on the protective cover, and a linkage pin shaft which is inserted and connected with the linkage screw rod and the movable block, the movable block is slidably inserted and connected in the butting ring, the movable block is slidably sleeved on the linkage screw rod, the movable block is inclined relative to the axial lead of the protective cover, the linkage pin shaft is inserted and connected to the movable block and the linkage screw rod in a relatively rotating manner, a butting nut is sleeved on the linkage screw rod in a matching manner, when the butting nut is screwed on the linkage screw rod, the inclined state of the movable block relative to the axial lead of the protective cover is changed, and the movable block drives the linkage screw rod and the protective cover to move towards the cover plate direction through the linkage pin shaft, the close degree of the limiting disc and the cover plate is improved.

Furthermore, the locking assembly further comprises two bearing blocks symmetrically mounted on the abutting ring, and the moving block can be abutted to the bearing blocks in a relatively sliding manner.

Furthermore, a sliding groove is formed in the bearing block, and the end portion of the moving block can be arranged in the sliding groove in a relatively sliding mode.

Furthermore, a limit groove is formed in the groove wall of the sliding groove, a rotating wheel is mounted at the end of the moving block, and the rotating wheel is contained in the limit groove in a sliding mode.

Furthermore, a nut is fixedly installed on the sealing sleeve, and the abutting ring is fixedly installed on the nut.

Further, the protection casing includes canned paragraph, elasticity section and activity section, the canned paragraph elasticity section and the activity section connects gradually, spacing dish fixed mounting be in on the canned paragraph, the activity section epirelief is equipped with the restriction flange, restriction flange activity joint to bear on the telescopic inner wall.

Furthermore, a supporting step is arranged in the bearing sleeve, and the limiting flange is clamped to the supporting step.

Furthermore, the elastic section is a spring tube, and two ends of the spring tube are fixedly connected with the fixed section and the movable section.

Furthermore, the end face of the bearing sleeve is provided with a sealing step, a sealing flange is fixedly mounted on the limiting disc, and the sealing flange is clamped to the sealing step.

Further, a sealing ring is arranged between the sealing step and the sealing flange.

The utility model has the advantages that the protective cover is externally sleeved with the sealing sleeve, the sealing sleeve presses the limiting disc to the bearing sleeve through the cover plate, namely, when the gas in the production system leaks, the gas can leak from the gap between the cover plate and the limiting disc, a locking assembly is arranged on the side surface of the cover plate of the sealing sleeve, a locking ring in the locking assembly is fixedly arranged on the sealing sleeve, the locking assembly controls the inclination angle of the moving block relative to the axial lead of the protective cover by abutting against the nut to ensure that the moving block is gradually changed from the inclined state to the parallel state, in the process of changing, the required space between the linkage screw rod and the locking ring is gradually increased, the movable block pushes the protective cover to move towards the direction far away from the sealing sleeve through the linkage pin shaft, so that the attaching force between the cover plate and the limiting disc is increased, thereby improve the leakproofness between spacing dish and the apron, avoid the gas leakage in the production system.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a perspective view of a bimetallic thermometer of the present invention in use in a production system;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

in the figure: the bimetallic thermometer comprises a bimetallic thermometer 100, a production system 200, a bearing sleeve 10, a probe 20, a watch box 30, a sealing step 110, a holding step 120, a probe 210, a protective cover 220, a sealing sleeve 230, a locking component 240, a fixed section 221, an elastic section 222, a movable section 223, a limiting disc 224, a sealing flange 225, a sealing ring 226, a limiting flange 227, a cover plate 231, a nut 232, a holding ring 241, a bearing block 242, a moving block 243, a linkage screw 244, a linkage pin shaft 245, a sliding groove 246, a rotating wheel 248, a limiting groove 247 and a holding nut 249.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

As shown in fig. 1 to 4, the present invention provides a bimetal thermometer 100 for monitoring the real-time temperature monitoring in a production system 200, wherein the bimetal thermometer 100 comprises a bearing sleeve 10 installed on the production system 200, a probe 20 inserted into the bearing sleeve 10 and a watch box 30 installed on the end of the probe 20.

The bearing sleeve 10 is preferably welded to the production system 200 in a welding manner, an inner cavity of the bearing sleeve 10 is communicated with the production system 200, the bearing sleeve 10 is provided with a sealing step 110 and a supporting step 120, the sealing step 110 is arranged on an end face of the bearing sleeve 10, the supporting step 120 is arranged inside the sealing step 110, and the supporting step 120 is arranged close to the production system 200.

The probe rod 20 is inserted into the bearing sleeve 10, the probe 210 is arranged at the inner end part of the bearing sleeve 10 at the probe rod 20, the end part of the probe rod 20 far away from the probe 210 is inserted into the meter box 30, the probe 210 detects the ambient temperature in the production system 200 in real time, the detection data of the probe 210 is transmitted to the meter box 30 through the probe rod 20, and the meter box 30 can display specific detection data, so that the real-time monitoring of the temperature in the production system 200 is realized.

Preferably, an electronic element (not shown) is disposed in the case 30, a thermistor with type pt100 is used as a detection element in the probe 210, the detection element is electrically connected to the electronic element in the case 30 through the probe 20, the resistivity in the probe 210 changes due to the change of the ambient temperature, the change is transmitted to the electronic element in the case 30 through the probe 30, and the electronic element amplifies the change and displays the change in a digital display manner or a pointer rotation manner.

Preferably, a movement (not shown) is disposed in the case 20, the probe 210 contains a heat transfer liquid such as mercury, the heat transfer liquid can drive the movement to operate through the probe rod 20, so as to show the ambient temperature of the probe 210, the heat transfer liquid is a liquid sensitive to temperature, i.e., having a low evaporation point, and when the heat transfer liquid expands due to heating or contracts due to cooling, the volume change of the heat transfer liquid can be transmitted to the movement through the probe rod 20, so as to drive the movement to operate, so as to show the temperature change in the production system 200.

The probe 20 is sleeved with a protective cover 220, the protective cover 220 is sleeved with a sealing sleeve 230, and preferably, the sealing sleeve 230 is provided with a locking assembly 240. The position of the shield 220 relative to the probe rod 20 is restricted by the clamping action of the sealing sleeve 230 and the carrier sleeve 10, and the position of the sealing sleeve 230 relative to the carrier sleeve 10 can be fixed after the locking assembly 240 is operated.

As shown in fig. 4, the protective cover 220 is a sleeve-shaped structure, the protective cover 220 is slidably sleeved on the probe rod 20, the protective cover 220 can be inserted into the bearing sleeve 10 along with the probe rod 20, and the protective cover 220 includes a fixed section 221, an elastic section 222, and a movable section 223.

The fixing section 221 abuts against the end face of the bearing sleeve 10, the fixing section 221 is provided with a limiting disc 224 in a protruding manner, the limiting disc 224 corresponds to the end face of the bearing sleeve 10, and when the fixing section 221 penetrates through the bearing sleeve 10 along with the probe rod 20, the limiting disc 224 can abut against the end face of the bearing sleeve 10. The outer side wall of the fixing section 221 is further provided with a sealing flange 225 in a protruding manner, the sealing flange 225 is disposed below the limiting disc 224, the sealing flange 225 corresponds to the sealing step 110, when the limiting disc 224 abuts against the end surface of the bearing sleeve 10, the sealing flange 225 can abut against the sealing step 110, preferably, a sealing ring 226 is further disposed between the sealing flange 225 and the sealing step 110, and under the clamping of the sealing flange 225 and the sealing step 110, the sealing ring 226 can fill a gap between the sealing flange 225 and the sealing step 110. The movable section 223 is further provided with a limiting flange 227 in a protruding manner, the limiting flange 227 corresponds to the abutting step 120, and after the movable section 223 is inserted into the bearing sleeve 10, the limiting flange 227 on the movable section 223 can abut against the abutting step 120, so that the movable section 223 is limited on the bearing sleeve 10. The elastic section 222 is preferably a spring tube, the elastic section 222 is fixedly connected to the limiting flange 227 and the fixed section 221, and after the protection cover 220 is inserted into the bearing sleeve 10, the movable section 223 is pressed into the protection cover 220 under the abutting action of the elastic section 222.

The sealing sleeve 230 is fixedly sleeved on the bearing sleeve 10 in a threaded manner, and the end of the sealing sleeve 230 is provided with a cover plate 231 protruding inwards, when the sealing sleeve 230 is screwed onto the bearing sleeve 10, the cover plate 231 can be abutted against the limiting disc 224, under the clamping and limiting action of the cover plate 231 and the end of the bearing sleeve 10, the shield 220 can be initially limited in the bearing sleeve 10, and in the further screwing process of the sealing sleeve 230, the limiting flange 227 on the movable section 223 in the shield 220 is abutted against the abutting step 120 in advance, under the pressing of the movable section 230, the elastic section 222 is compressed, and the probe 210 extends out of the movable section 230 and extends into the production system 200.

Preferably, a nut 232 is provided on an end face of the sealing sleeve 230, the nut 232 is fixedly mounted on an end face of the cover plate 231 facing the outside of the sealing sleeve 230, and the sealing sleeve 230 can be screwed to the carrier sleeve 10 by the nut 232.

As shown in fig. 2, the locking assembly 240 includes an abutting ring 241 mounted on the nut 232, two bearing blocks 242 symmetrically mounted on the abutting ring 241, a moving block 243 slidably disposed on the bearing block 242, a linkage screw 244 corresponding to the moving block 243 and fixedly mounted on the protective cover 220, and a linkage pin 245 penetrating and connecting the linkage screw 244 and the moving block 243.

The holding ring 241 can be fixedly mounted on the nut 232, the two bearing blocks 242 are symmetrically arranged about the axis of the holding ring 241, a sliding groove 246 is formed in the bearing block 242, a limit groove 247 is further formed in the groove wall of the sliding groove 242, the moving block 243 is slidably accommodated in the sliding groove 246, the moving block 243 is inserted into the linkage screw 244, after the moving block 243 is sleeved on the linkage screw 244, the moving block 243 is obliquely arranged between the bearing block 242 and the protective cover 220 relative to the axis of the protective cover 220, rotating wheels 248 are mounted on two sides of the moving block 243, the rotating wheels 248 are accommodated in the limit groove 247, and under the limit of the rotating wheels 248, the moving block 243 cannot be separated from the sliding groove 246 in the sliding process. After the moving block 243 is sleeved on the linkage screw 244 and the moving block 243 and the linkage screw 244 are aligned, the linkage pin 245 can relatively and rotatably penetrate and connect the moving block 243 and the linkage screw 244.

The linkage screw 244 is sleeved with a holding nut 249 in a matching manner, after the holding nut 249 is screwed along the linkage screw 244, the movable block 243 can be pressed and held to be changed from an inclined state relative to the bearing block 242 to a parallel state, in the changing process, the movable block 243 can lift the protective cover 220 towards the direction of the watch box 30 through the linkage pin 245, and meanwhile, the movable block 243 can rotate around the linkage pin 245. When the protection cover 220 moves towards the direction of the watch box 30, the attaching force between the limiting disc 224 and the cover plate 231 on the protection cover 220 is increased, so that the sealing performance between the protection cover 220 and the sealing sleeve 230 can be improved, and the medium leakage in the production system 200 is avoided.

When the bimetallic thermometer 100 is installed, the bearing sleeve 10 is welded to a production system, then the probe 20 with the protective cover 220 and the probe 210 can be inserted into the production system 200, then the sealing sleeve 230 is screwed onto the bearing sleeve 10 through the nut 232, the fixed section 221 on the protective cover 220 is pressed onto the bearing sleeve 10 under the pressing action of the cover plate 231, after the fixed section 222 is compressed, the probe 210 and the probe 20 extend out from the movable section 223 until the probe 210 is inserted into the production system 200, the production system 200 is subjected to temperature monitoring, after the probe 210 is in place, the holding nut 249 is screwed onto the linkage screw 244, under the pressing action of the holding screw 249, the inclined state of the moving block 243 is changed, the moving block 243 and the linkage pin 245 lift the protective cover 220 towards the direction of the watch box 30 until the protective cover 220 and the cover plate 231 are further attached, improving the seal between the seal sleeve 230 and the carrier sleeve 10.

In the installation process, after the protective cover 220 and the bearing sleeve 10 are in place, the abutting nut 249 is screwed on the linkage screw 244, the abutting nut 249 pushes the moving block 243 along the linkage screw 244, so as to change the inclined state of the moving block 243 relative to the axial lead of the protective cover 220, and in the process that the moving block 243 is pressed, the moving block 243 drives the protective cover 220 to move upwards through the linkage pin 245 and the linkage screw 244, so that the attaching force between the limiting disc 224 and the cover plate 231 is increased, and the sealing performance between the protective cover 220 and the bearing sleeve 10 is improved.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A bimetallic thermometer, characterized by: the probe rod is sleeved with a protective cover, a limiting disc is arranged on the protective cover in a protruding mode, the limiting disc is attached to the end face of the bearing sleeve, a sealing sleeve is sleeved on the bearing sleeve in a threaded mode, a cover plate is arranged in the sealing sleeve, the cover plate and the bearing sleeve clamp the limiting disc, and a locking assembly is arranged on the sealing sleeve;

2. A bimetallic thermometer according to claim 1, characterised in that: the locking assembly further comprises two bearing blocks symmetrically arranged on the abutting ring, and the moving block can abut against the bearing blocks in a relatively sliding manner.

3. A bimetallic thermometer according to claim 2, characterised in that: the bearing block is provided with a sliding groove, and the end part of the moving block can be arranged in the sliding groove in a relatively sliding manner.

4. A bimetallic thermometer according to claim 3, characterised in that: the wall of the sliding groove is provided with a limiting groove, the end part of the moving block is provided with a rotating wheel, and the rotating wheel is accommodated in the limiting groove in a sliding manner.

5. A bimetallic thermometer according to claim 1, characterised in that: the baffle plate is fixedly provided with a nut, and the abutting ring is fixedly arranged on the nut.

6. A bimetallic thermometer according to claim 1, characterised in that: the protection casing includes canned paragraph, elasticity section and activity section, the canned paragraph elasticity section and the activity section connects gradually, spacing dish fixed mounting be in on the canned paragraph, the activity section epirelief is equipped with the restriction flange, restriction flange activity joint to bear on the telescopic inner wall.

7. The bimetallic thermometer of claim 6, wherein: the bearing sleeve is internally provided with a propping step, and the limiting flange is clamped on the propping step.

8. The bimetallic thermometer of claim 6, wherein: the elastic section is a spring tube, and two ends of the spring tube are fixedly connected with the fixed section and the movable section.

9. A bimetallic thermometer according to claim 1, characterised in that: the bearing sleeve is characterized in that a sealing step is formed in the end face of the bearing sleeve, a sealing flange is fixedly mounted on the limiting disc, and the sealing flange is clamped to the sealing step.

10. A bimetallic thermometer according to claim 9, characterised in that: and a sealing ring is arranged between the sealing step and the sealing flange.