Armored platinum thermistor element convenient to install

Abstract

The utility model relates to an armored platinum thermistor element convenient to install, and the element is characterized in that a switching assembly sleeves a protection tube, an adjusting part is located at one side close to a junction box, then the adjusting part is rotated to enable the adjusting part to be in threaded connection with the outer surface of the protection tube, and the position of the switching assembly relative to the protection tube is further fixed; then the flange plate is arranged on the switching assembly in a sleeving mode, the multiple bolts penetrate through the flange plate so that the flange plate can be conveniently fixed to the working position, and in the process that each bolt penetrates through the flange plate, one connecting piece can be driven to slide along the flange plate and is finally inserted into the switching assembly, so that the position, relative to the switching assembly, of the flange plate is fixed.

Description

Technical Field

[0001] The present application relates to the technical field of thermal resistors, and in particular to an armored platinum thermal resistor element that is easy to install. Background Art

[0002] Thermal resistors (RTRs) are the most commonly used temperature detectors in the medium and low temperature ranges. Thermal resistors measure temperature based on the property that the resistance of a metal conductor increases with temperature. Their main characteristics are high measurement accuracy and stable performance. Platinum RTDs offer the highest measurement accuracy and are not only widely used in industrial temperature measurement but also serve as standard reference instruments. Most RTDs are made of pure metal, with platinum and copper being the most commonly used. In addition, nickel, manganese, and rhodium are also being used. A variety of temperature-sensing materials are commonly used in metal RTDs, with platinum wire being the most common. In addition to platinum wire, other metal RTD materials used for industrial measurement include copper, nickel, iron, and iron-nickel.

[0003] The existing armored thermal resistor needs to be installed in the working position through a flange as an intermediate connecting piece when in use. However, connecting the armored thermal resistor to the flange is cumbersome, time-consuming and labor-intensive. At the same time, the position of the armored thermal resistor relative to the flange after installation is inconvenient to adjust. Utility Model Content

[0004] Based on this, it is necessary to provide an easy-to-install armored platinum thermal resistor element to address the problems that the connection between the traditional armored thermal resistor and the flange is cumbersome, time-consuming and labor-intensive, and the position of the armored thermal resistor relative to the flange after installation is inconvenient to adjust.

[0005] The present application provides an armored platinum thermal resistor element that is easy to install, comprising:

[0006] Junction box;

[0007] A protective tube, wherein the junction box is provided at one end of the protective tube, and the junction box is fixedly connected to the protective tube;

[0008] An adapter assembly is sleeved on the protection tube, and the adapter assembly is slidably connected to the protection tube;

[0009] an adjusting member, the adjusting member being disposed between the adapter assembly and the protective tube, the adjusting member being rotatably connected to the adapter assembly, and the adjusting member being threadedly connected to the protective tube;

[0010] A flange is sleeved on the outside of the adapter assembly;

[0011] A plurality of connectors are provided, the plurality of connectors being equidistantly arranged along the circumference of the flange, the connectors being provided on the flange, and each of the connectors being at least partially inserted into the adapter assembly;

[0012] The bolts are provided in a plurality, the number of the bolts being the same as the number of the connecting pieces, the plurality of bolts being arranged equidistantly along the circumferential direction of the flange, each of the bolts passing through the flange, and each of the connecting pieces being in contact with one of the bolts.

[0013] The present application relates to an armored platinum thermal resistor element that is easy to install. The adapter assembly is first placed on a protective tube with an adjusting piece located on a side close to a junction box. The adjusting piece is then rotated to connect the adjusting piece to a threaded connection on the outer surface of the protective tube, thereby further fixing the position of the adapter assembly relative to the protective tube. The flange is then placed on the adapter assembly, and multiple bolts are passed through the flange to fix the flange in a working position. In the process of each bolt passing through the flange, a connecting piece is driven to slide along the flange and finally inserted into the adapter assembly, thereby fixing the position of the flange relative to the adapter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of an armored platinum thermal resistor element that is easy to install provided in one embodiment of the present application.

[0015] Figure 2 A schematic cross-sectional view of the connection between the flange and the adapter assembly in an armored platinum thermal resistor element that is easy to install provided in one embodiment of the present application.

[0016] Figure 3 for Figure 2 Enlarged view of point a in the middle.

[0017] Figure 4 A schematic diagram illustrating the positional relationship between the first support ring and the second support ring in an armored platinum thermal resistor element that is easy to install provided in one embodiment of the present application.

[0018] Figure 5 A schematic diagram of the connection between the flange and the bolts in an armored platinum thermal resistor element that is easy to install provided in one embodiment of the present application.

[0019] Reference numerals:

[0020] 11. Junction box; 12. Protective tube; 13. Adapter assembly; 131. First support ring;

[0021] 131a, limiting hole; 132, second support ring; 133, support rod; 14, adjustment member;

[0022] 15. Flange; 151. Threaded hole; 152. Positioning groove; 153. Limiting channel; 16. Connector;

[0023] 161, locking pin; 161a, first inclined surface; 162, limit plate; 163, return spring;

[0024] 17. Bolt; 18. Limit block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0026] like Figure 1 and Figure 2 As shown, in one embodiment of the present application, the armored platinum thermal resistor element that is easy to install includes a junction box 11, a protective tube 12, a switching assembly 13, an adjustment member 14, a flange 15, a connecting member 16 and a plurality of bolts 17.

[0027] The junction box 11 is disposed at one end of the protection tube 12. The junction box 11 is fixedly connected to the protection tube 12.

[0028] The adapter assembly 13 is sleeved on the protection tube 12. The adapter assembly 13 is slidably connected to the protection tube 12.

[0029] The adjusting member 14 is disposed between the adapter assembly 13 and the protection tube 12. The adjusting member 14 is rotatably connected to the adapter assembly 13. The adjusting member 14 is threadedly connected to the protection tube 12.

[0030] The flange 15 is sleeved on the outside of the adapter assembly 13 .

[0031] The connecting members 16 are provided in a plurality and are arranged equidistantly along the circumference of the flange 15. The connecting members 16 are provided on the flange 15. Each of the connecting members 16 is at least partially inserted into the adapter assembly 13.

[0032] There are multiple bolts 17. The number of bolts 17 is the same as the number of connectors 16. The multiple bolts 17 are equidistantly spaced along the circumference of the flange 15. Each bolt 17 passes through the flange 15. Each connector 16 abuts against one bolt 17.

[0033] Specifically, the protection tube 12 is configured to be long and cylindrical, and the cross section of the protection tube 12 is annular. The flange 15 is configured to be annular. Each bolt 17 can slide through the flange 15 , or can be threadedly connected to the flange 15 .

[0034] In this embodiment, the adapter assembly 13 is first sleeved on the protective tube 12, and the adjusting member 14 is located on the side close to the junction box 11. Then, the adjusting member 14 is rotated to make the adjusting member 14 and the threaded connection on the outer surface of the protective tube 12, so that the position of the adapter assembly 13 relative to the protective tube 12 is further fixed. Then, the flange 15 is sleeved on the adapter assembly 13, and multiple bolts 17 are passed through the flange 15 to facilitate fixing the flange 15 in the working position. In the process of each bolt 17 passing through the flange 15, it will drive a connecting member 16 to slide along the flange 15 and finally be inserted into the adapter assembly 13, so that the position of the flange 15 relative to the adapter assembly 13 is fixed.

[0035] like Figure 2 As shown, in one embodiment of the present application, a plurality of threaded holes 151 are formed on the flange 15. The number of the threaded holes 151 is the same as the number of the bolts 17. A bolt 17 is threadedly connected in each of the threaded holes 151.

[0036] Specifically, the number of the threaded holes 151 is the same as the number of the connecting members 16 . A connecting member 16 is provided corresponding to each threaded hole 151 , and a connecting member 16 is provided between each threaded hole 151 and the axis of the flange 15 .

[0037] In this embodiment, when a bolt 17 is threadedly connected to a threaded hole 151, as the bolt 17 continues to penetrate into the threaded hole 151, the penetration process of the bolt 17 will drive the connecting member 16 to slide relative to the flange 15, and the connecting member 16 will be further inserted into the adapter assembly 13.

[0038] like Figure 3 As shown, in one embodiment of the present application, the connecting member 16 includes a locking pin 161 , a limiting plate 162 and a return spring 163 .

[0039] The locking pin 161 is slidably mounted on the flange 15. One end of the locking pin 161 abuts against one of the bolts 17. The other end of the locking pin 161 is inserted into the adapter assembly 13.

[0040] The limiting plate 162 is fixedly sleeved on the middle portion of the locking pin 161. The limiting plate 162 is slidably connected to the flange 15.

[0041] The return spring 163 is disposed in the flange 15. The return spring 163 is also sleeved on the locking pin 161. One end of the return spring 163 is fixedly connected to the limit plate 162. The other end of the return spring 163 is fixedly connected to the flange 15.

[0042] Specifically, the locking pin 161 is set to be cylindrical and can slide relative to the flange 15; the limiting plate 162 is set to be annular, and the annular inner wall of the limiting plate 162 is at least partially fixedly connected to the outer wall of the locking pin 161, and the axis of the limiting plate 162 is collinear with the axis of the locking pin 161.

[0043] In this embodiment, the locking pin 161 will drive the limiting plate 162 to move synchronously during the movement, and the limiting plate 162 will further compress the return spring 163, and the locking pin 161 will further be inserted into the adapter assembly 13.

[0044] like Figure 3 As shown, in one embodiment of the present application, a first inclined surface 161 a is formed on the locking pin 161 . The first inclined surface 161 a is provided at one end of the locking pin 161 close to the bolt 17 .

[0045] In this embodiment, when the bolt 17 rotates in the threaded hole 151 and moves in the axial direction, the bolt 17 will squeeze the first inclined surface 161a, and the bolt 17 will further slide relative to the first inclined surface 161a, and then the bolt 17 will drive the locking pin 161 to slide relative to the flange 15.

[0046] like Figure 4 As shown, in one embodiment of the present application, the adapter assembly 13 includes a first support ring 131, a second support ring 132 and a plurality of support rods 133.

[0047] The first support ring 131 is sleeved on the protection tube 12 . The flange 15 is sleeved on the first support ring 131 .

[0048] The second support ring 132 is disposed near the adjusting member 14. The second support ring 132 is sleeved on the protection tube 12. The second support ring 132 is rotatably connected to the adjusting member 14.

[0049] A plurality of support rods 133 are provided. Each support rod 133 is disposed between the first support ring 131 and the second support ring 132. One end of each support rod 133 is fixedly connected to the first support ring 131. The other end of each support rod 133 is fixedly connected to the second support ring 132.

[0050] Specifically, the protective tube 12 is arranged between multiple support rods 133, the first support ring 131 and the second support ring 132 are both arranged in a circular shape, and the second support ring 132 is arranged on the side of the first support ring 131 close to the junction box 11, and the first support ring 131 and the second support ring 132 are connected to form an integral structure through multiple support rods 133.

[0051] like Figure 4 As shown, in one embodiment of the present application, the armored platinum thermal resistor element that is easy to install also includes a plurality of limit blocks 18.

[0052] There are multiple limit blocks 18. The number of limit blocks 18 is the same as the number of bolts 17. The limit blocks 18 are fixedly connected to the first support ring 131. Two adjacent connecting members 16 are provided with one limit block 18. Each limit block 18 is inserted into the flange 15.

[0053] Specifically, the plurality of limit blocks 18 are all fixed on the outer circumferential surface of the first support ring 131 , and the plurality of limit blocks 18 are equidistantly arranged along the circumferential direction of the first support ring 131 .

[0054] In this embodiment, during the process of the flange 15 being put on the first support ring 131, the multiple limit blocks 18 on the first support ring 131 are inserted into the flange 15, thereby limiting the relative position movement between the flange 15 and the first support ring 131 to only be able to move along the axial direction of the flange 15, so as to stabilize the stability of the relative position movement between the flange 15 and the first support ring 131.

[0055] like Figure 5 As shown, in one embodiment of the present application, a plurality of positioning slots 152 are formed on the flange 15. The number of the positioning slots 152 is the same as the number of the limiting blocks 18. Each limiting block 18 is inserted into one of the positioning slots 152.

[0056] Specifically, each limiting block 18 can slide in a positioning slot 152 .

[0057] like Figure 5 As shown, in one embodiment of the present application, the structure of each positioning groove 152 is the same. Each positioning groove 152 is formed by extending from the end surface of the flange 15 close to the adjusting member 14 to the end surface of the flange 15 away from the adjusting member 14.

[0058] Specifically, the positioning groove 152 is formed by extending from the end surface of the flange 15 close to the adjusting member 14 to the other end surface of the flange 15 , but the extension length of the positioning groove 152 is smaller than the length of the flange 15 along the axial direction.

[0059] In this embodiment, the end of the first support ring 131 away from the junction box 11 is first inserted into the flange 15 from the end of the flange 15 close to the junction box 11, and then each limit block 18 is inserted into a positioning groove 152, so that the first support ring 131 can move stably relative to the flange 15.

[0060] like Figure 5 As shown, in one embodiment of the present application, the flange 15 is provided with a plurality of limiting channels 153. The number of the limiting channels 153 is the same as the number of the bolts 17. Each limiting channel 153 is connected to one of the threaded holes 151. Each limiting channel 153 is slidably connected to one of the locking pins 161. Each limiting channel 153 is slidably connected to one of the limiting plates 162.

[0061] Specifically, the limiting channel 153 includes a first channel and a second channel, both of which are set to be cylindrical. The first channel connects the threaded hole 151 with the hollow part of the flange 15, and the second channel is set in the middle of the first channel. The axis of the second channel is collinear with the axis of the first channel, and the cross-sectional circular diameter of the second channel is larger than the cross-sectional circular diameter of the first channel; the locking pin 161 is slidably connected to the first channel, and the limiting plate 162 is slidably connected to the second channel.

[0062] like Figure 4 As shown, in one embodiment of the present application, a plurality of limiting holes 131a are defined on the first support ring 131. The number of the limiting holes 131a is the same as the number of the limiting channels 153. Each limiting hole 131a is connected to one of the limiting channels 153. Each locking pin 161 is inserted into one of the limiting holes 131a.

[0063] Specifically, one limiting hole 131a corresponds to one first channel, and the cross section of the limiting hole 131a is set to be circular, the axis of the limiting hole 131a is collinear with the axis of the first channel, and the cross section diameter of the first channel is equal to the cross section diameter of the limiting hole 131a.

[0064] In this embodiment, when the locking pin 161 slides relative to the first channel, the end of the locking pin 161 close to the axis of the flange 15 is inserted into the limiting hole 131a, thereby limiting the position between the first support ring 131 and the flange 15.

[0065] The various technical features of the above-described embodiments can be combined arbitrarily, and the execution order of the method steps is not restricted. In order to make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. An armored platinum thermal resistance element that is easy to install, characterized in that: The armored platinum thermal resistance element that is easy to install includes: Junction box; A protective tube, wherein the junction box is provided at one end of the protective tube, and the junction box is fixedly connected to the protective tube; An adapter assembly is sleeved on the protection tube, and the adapter assembly is slidably connected to the protection tube; an adjusting member, the adjusting member being disposed between the adapter assembly and the protective tube, the adjusting member being rotatably connected to the adapter assembly, and the adjusting member being threadedly connected to the protective tube; A flange is sleeved on the outside of the adapter assembly; A plurality of connectors are provided, the plurality of connectors being equidistantly arranged along the circumference of the flange, the connectors being provided on the flange, and each of the connectors being at least partially inserted into the adapter assembly; The bolts are provided in a plurality, the number of the bolts being the same as the number of the connecting members, the plurality of bolts being arranged equidistantly along the circumferential direction of the flange, each of the bolts passing through the flange, and each of the connecting members abutting against one of the bolts.

2. The armored platinum thermal resistance element that is easy to install according to claim 1 is characterized in that: The flange is provided with a plurality of threaded holes, the number of the threaded holes is the same as the number of the bolts, and a bolt is threadedly connected in each of the threaded holes.

3. The armored platinum thermal resistance element that is easy to install according to claim 2 is characterized in that: The connecting piece includes: a locking pin, slidably disposed on the flange, one end of the locking pin abutting against one of the bolts, and the other end of the locking pin being inserted into the adapter assembly; A limiting plate, fixedly sleeved on the middle portion of the locking pin, the limiting plate being slidably connected to the flange; A return spring is arranged in the flange, and the return spring is also sleeved on the locking pin. One end of the return spring is fixedly connected to the limit plate, and the other end of the return spring is fixedly connected to the flange.

4. The armored platinum thermal resistance element that is easy to install according to claim 3 is characterized in that: The locking pin is provided with a first inclined surface, and the first inclined surface is arranged at one end of the locking pin close to the bolt.

5. The armored platinum thermal resistance element that is easy to install according to claim 4 is characterized in that: The adapter assembly includes: A first support ring is sleeved on the protection tube, and the flange is sleeved on the first support ring; a second support ring, disposed near the adjusting member, the second support ring being sleeved on the protective tube, and the second support ring being rotatably connected to the adjusting member; There are multiple support rods, each of which is arranged between the first support ring and the second support ring, one end of each support rod is fixedly connected to the first support ring, and the other end of each support rod is fixedly connected to the second support ring.

6. The armored platinum thermal resistance element that is easy to install according to claim 5 is characterized in that: Also includes: There are multiple limit blocks, the number of which is the same as the number of the bolts. The limit blocks are fixedly connected to the first support ring, and two adjacent connecting parts are provided with one limit block, and each limit block is inserted into the flange.

7. The armored platinum thermal resistance element that is easy to install according to claim 6 is characterized in that: The flange is provided with a plurality of positioning slots, the number of the positioning slots is the same as the number of the limiting blocks, and each of the limiting blocks is inserted into one of the positioning slots.

8. The armored platinum thermal resistance element easy to install according to claim 7, characterized in that: The structure of each positioning groove is the same, and each positioning groove is formed by extending from the end surface of the flange close to the adjusting member to the end surface of the flange away from the adjusting member.

9. The armored platinum thermal resistance element easy to install according to claim 8, characterized in that: The flange is provided with a plurality of limiting channels, the number of the limiting channels is the same as the number of the bolts, each of the limiting channels is connected to a threaded hole, each of the limiting channels is slidably connected to a locking pin, and each of the limiting channels is slidably connected to a limiting plate.

10. The armored platinum thermal resistance element easy to install according to claim 9, characterized in that: The first support ring is provided with a plurality of limiting holes, the number of the limiting holes is the same as the number of the limiting channels, each of the limiting holes is communicated with a limiting channel, and each of the locking pins is inserted into a limiting hole.

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