Protective sleeve of thermocouple with long service life

Abstract

The utility model provides a long-service-life protective sleeve for a thermocouple, and belongs to the technical field of thermocouple protection. Comprising a thermocouple and a threaded connection seat arranged on the outer side of the thermocouple, and further comprises a protection sleeve and a protection sleeve installation component, the protection sleeve is arranged on the outer side of the thermocouple in a sleeving mode and screwed to the threaded connection seat, and a through hole A is formed in the side wall of the protection sleeve; the protective sleeve installation component comprises an upper clamping plate fixed to the outer wall of the protective sleeve, a fixing block is arranged on the side edge of the upper clamping plate, an adjusting bolt capable of movably extending into the protective sleeve is connected to the fixing block in a threaded mode, an L-shaped lower clamping plate rotationally connected with the adjusting bolt is arranged in the protective sleeve, and the lower clamping plate is connected with the lower clamping plate in a threaded mode. And under the assistance of the adjusting bolt, the through hole A can penetrate through the through hole A to protrude to the outer side of the protective sleeve. According to the application, the protection sleeve and the tested equipment are convenient to mount, and the protection sleeve is convenient to quickly disassemble and replace.

Description

Technical Field

[0001] The present application relates to the field of thermocouple protection, and in particular to a protective sleeve for a thermocouple with a long service life. Background Art

[0002] Thermocouple protection sleeves are mainly used to protect thermocouples from mechanical damage, corrosion, external temperature fluctuations and other adverse effects. It allows thermocouples to obtain more accurate measurement data and effectively prolongs the service life of thermocouples.

[0003] When installing the thermocouple protective cover in the related art, it is usually necessary to first weld it to the opening on the side wall of the device to be tested, and then use the threaded connection seat welded on the outer wall of the thermocouple to fix the thermocouple and the protective cover. However, such a welding installation design of the protective cover not only makes the installation of the protective cover more troublesome, but the protective cover is also usually prone to excessive stress and damage under long-term high-speed fluid impact. The above solution is also not convenient for removing and replacing the protective cover. Utility Model Content

[0004] In order to make up for the above shortcomings, the present application provides a protective cover for a thermocouple with a long service life, which not only makes it easy to install the protective cover and the device under test, but also facilitates the quick removal and replacement of the protective cover.

[0005] The present application provides a protective sleeve for a thermocouple with a long service life, comprising a thermocouple and a threaded connection seat arranged on the outer side thereof, and also comprising a protective sleeve and a protective sleeve mounting member:

[0006] The protective sleeve is sleeved on the outside of the thermocouple and screwed onto the threaded connection seat, and a through hole A is opened on the side wall of the protective sleeve;

[0007] The protective cover mounting component includes an upper clamping plate fixed to the outer wall of the protective cover, a fixing block is provided on the side of the upper clamping plate, an adjusting bolt that can be movably extended into the protective cover is screwed on the fixing block, an L-shaped lower clamping plate rotatably connected to the adjusting bolt is provided in the protective cover, and with the assistance of the adjusting bolt, the L-shaped lower clamping plate can pass through the through hole A and protrude to the outside of the protective cover.

[0008] Preferably, the threaded connection seat comprises a fixing seat fixed to the outer wall of the thermocouple rod, an external thread sleeve is fixedly connected to the bottom of the fixing seat, and an internal thread strip matched with the external thread sleeve is provided on the inner wall of the opening of the protective sleeve.

[0009] Preferably, two fixing blocks are provided, both fixing blocks are provided with screw holes matched with the adjusting bolts, and the side walls of the protective cover and the upper clamping plate are provided with through holes B matched with the adjusting bolts.

[0010] Preferably, a bearing is embedded in the connection between the L-shaped lower clamping plate and the adjusting bolt, and the end of the adjusting bolt is fixedly connected to the inner wall of the bearing.

[0011] Preferably, the outer wall of the lower section of the L-shaped lower clamping plate has the same curvature as the outer wall of the protective sleeve, and the curvature of the upper section of the L-shaped lower clamping plate close to the adjusting bolt is consistent with the curvature of the inner wall of the protective sleeve.

[0012] Preferably, when the adjusting bolt continuously rotates toward a position close to the axis of the protective sleeve, the outer wall of the lower section of the L-shaped lower clamping plate will be hidden in the through hole A, and when the adjusting bolt continuously rotates toward a position away from the axis of the protective sleeve, the outer wall of the lower section of the L-shaped lower clamping plate will protrude to the outside of the through hole A.

[0013] Preferably, a sealing rubber ring that fits tightly against the outer wall of the equipment is embedded in the bottom end surface of the upper clamping plate.

[0014] Preferably, a threaded rubber strip matching the adjusting bolt is adhered in the through hole B.

[0015] Beneficial effect: The present application provides a protective cover for a thermocouple with a long service life. The thermocouple is pre-plugged and fixed to the inside of the protective cover through a threaded connection seat, and then the protective cover is inserted into the hole opened in the device under test, and the upper clamping plate is pressed downward to make it closer to the outer surface of the device under test. The adjusting bolt is screwed outward so that the L-shaped lower clamping plate protrudes to the outside of the protective cover, so that the upper clamping plate and the L-shaped lower clamping plate are respectively stuck on the upper and lower inner walls of the device under test. Such a design not only makes it convenient to install the protective cover and the device under test, but also facilitates the quick removal and replacement of the protective cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the protective cover of the thermocouple with a long service life;

[0018] Figure 2 This is a schematic diagram of the state when the protective cover of the long-life thermocouple is not installed;

[0019] Figure 3 This is a schematic diagram of the state of the protective cover of the long-life thermocouple after installation;

[0020] Figure 4 is a schematic diagram of the connection relationship between the protective cover and the protective cover mounting component;

[0021] Figure 5 This is a schematic diagram of the outside of the protective cover;

[0022] Figure 6 Schematic diagram of the connection relationship between the upper clamping plate and the fixing block.

[0023] In the figure: 1-thermocouple; 2-protective sleeve; 21-through hole A; 3-protective sleeve mounting member; 31-upper clamping plate; 311-through hole B; 32-fixing block; 321-screw hole; 33-adjusting bolt; 34-L-shaped lower clamping plate; 35-sealing rubber ring; 36-threaded rubber strip; 4-threaded connecting seat; 41-fixing seat; 42-external threaded sleeve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0025] See also Figure 1-Figure 3 The present application provides a protective sleeve for a thermocouple with a long service life, comprising a thermocouple 1 and a threaded connection seat 4 arranged on the outer side thereof, and also comprising a protective sleeve 2 and a protective sleeve mounting member 3:

[0026] The protective cover 2 is sleeved on the outside of the thermocouple 1 and screwed onto the threaded connection seat 4, and a through hole A21 is opened on the side wall of the protective cover 2;

[0027] The protective cover mounting member 3 includes an upper clamping plate 31 fixed to the outer wall of the protective cover 2, a fixing block 32 is provided on the side of the upper clamping plate 31, an adjusting bolt 33 which can be movably extended into the protective cover 2 is screwed on the fixing block 32, an L-shaped lower clamping plate 34 which is rotatably connected to the adjusting bolt 33 is provided in the protective cover 2, and with the assistance of the adjusting bolt 33, it can pass through the through hole A21 and protrude to the outside of the protective cover 2.

[0028] In this embodiment, the thermocouple 1 is pre-plugged and fixed to the inside of the protective cover 2 by means of the threaded connection seat 4, and then the protective cover 2 is inserted into the hole opened in the device under test, the upper clamping plate 31 is pressed downward to make it closer to the outer surface of the device under test, and the adjusting bolt 33 is screwed toward the outside so that the L-shaped lower clamping plate 34 protrudes to the outside of the protective cover 2, so that the upper clamping plate 31 and the L-shaped lower clamping plate 34 are respectively stuck on the upper and lower inner walls of the device under test. Such a design not only makes it convenient to install the protective cover 2 and the device under test, but also facilitates the quick removal and replacement of the protective cover 2.

[0029] See also Figure 2 and Figure 4 and Figure 5The threaded connection seat 4 includes a fixing seat 41 fixed to the outer wall of the rod of the thermocouple 1, an external thread sleeve 42 is fixedly connected to the bottom of the fixing seat 41, and an internal thread strip matched with the external thread sleeve 42 is provided on the inner wall of the opening of the protective sleeve 2. Specifically, the design of the external thread sleeve 42 on the threaded connection seat 4 and the internal thread strip at the opening of the protective sleeve 2 facilitates the screwing and fixing of the thermocouple 1 and the protective sleeve 2, so that the thermocouple 1 can be stably inserted into the interior of the protective sleeve 2.

[0030] See also Figure 3 and Figure 6 There are two fixing blocks 32, both fixing blocks 32 are provided with screw holes 321 adapted to the adjusting bolts 33, and the side walls of the protective cover 2 and the upper clamping plate 31 are provided with through holes B311 adapted to the adjusting bolts 33. Specifically, the matching design of the screw holes 321 and the through holes B311 with the adjusting bolts 33 facilitates the adjusting bolts 33 to be screwed onto the fixing blocks 32, and can be extended to the inside of the protective cover 2 for subsequent installation operations during the screwing process.

[0031] See also Figure 3 A bearing is embedded at the connection between the L-shaped lower clamping plate 34 and the adjusting bolt 33, and the end of the adjusting bolt 33 is fixedly connected to the inner wall of the bearing. Specifically, the design of the bearing facilitates the adjustment bolt 33 and the L-shaped lower clamping plate 34 to be rotationally fixed, so that when the adjustment bolt 33 is screwed, the L-shaped lower clamping plate 34 can stably slide along the through hole A21.

[0032] It should also be noted that, in actual applications in this field, the connection portion between the outer surface of the end of the adjusting bolt 33 and the bearing is designed to be smooth so that the two can be fixed more closely.

[0033] See also Figure 3 The outer wall of the lower section of the L-shaped lower clamping plate 34 has the same curvature as the outer wall of the protective sleeve 2 , and the curvature of the upper section of the L-shaped lower clamping plate 34 near the adjusting bolt 33 is consistent with the curvature of the inner wall of the protective sleeve 2 .

[0034] See also Figure 2 and Figure 3When the adjusting bolt 33 continuously rotates toward a position close to the axis of the protective cover 2, the outer wall of the lower section of the L-shaped lower clamping plate 34 will be hidden in the through hole A21. When the adjusting bolt 33 continuously rotates toward a position away from the axis of the protective cover 2, the outer wall of the lower section of the L-shaped lower clamping plate 34 will protrude to the outside of the through hole A21. Specifically, when the adjusting bolt 33 is screwed to the innermost end, that is, when the head of the adjusting bolt 33 is in close contact with the fixing block 32, the inner side of the L-shaped lower clamping plate 34 will fit the outer surface of the thermocouple 1, and the outer wall of the lower section of the L-shaped lower clamping plate 34 is not exposed outside the through hole A21, which does not affect the insertion of the protective cover 2 into the device under test; when the adjusting bolt 33 is screwed outward, that is, when the head of the adjusting bolt 33 is slowly separated from the fixing block 32, the lower section of the L-shaped lower clamping plate 34 will be exposed or protrude outside the protective cover 2, so that the protective cover 2 is limited to the installation hole opened by the device under test through the upper clamping plate 31 and the L-shaped lower clamping plate 34.

[0035] See also Figure 2 and Figure 3 The bottom end surface of the upper clamping plate 31 is embedded with a sealing rubber ring 35 that fits tightly with the outer wall of the device being measured. The design of the sealing rubber ring 35 can make the upper clamping plate 31 and the surface of the device being measured more tightly sealed, which indirectly improves the temperature measurement effect of the present application.

[0036] See also Figure 2 and Figure 3 A threaded rubber strip 36 matching the adjusting bolt 33 is adhered in the through hole B311. The design of the sealing rubber ring 35 can make the sealing of the screwing part of the adjusting bolt 33 better, which indirectly improves the temperature measurement effect of the present application.

[0037] When using this application:

[0038] The thermocouple 1 is pre-plugged and fixed to the inside of the protective cover 2 through the threaded connection seat 4, and then the protective cover 2 is inserted into the hole opened in the device under test, and the upper clamping plate 31 is pressed downward to make it closer to the outer surface of the device under test, and the adjusting bolt 33 is screwed toward the outside so that the L-shaped lower clamping plate 34 protrudes to the outside of the protective cover 2, so that the upper clamping plate 31 and the L-shaped lower clamping plate 34 are respectively stuck on the upper and lower inner walls of the device under test. Such a design not only makes it convenient to install the protective cover 2 and the device under test, but also facilitates the quick removal and replacement of the protective cover 2.

[0039] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A protective sleeve for a thermocouple with a long service life, comprising a thermocouple (1) and a threaded connection seat (4) arranged on the outer side thereof, characterized in that: Also includes: A protective sleeve (2) is sleeved on the outside of the thermocouple (1) and screwed onto the threaded connection seat (4), and a through hole A (21) is opened on the side wall of the protective sleeve (2); The protective cover mounting member (3) comprises an upper clamping plate (31) fixed to the outer wall of the protective cover (2), a fixing block (32) is provided on the side of the upper clamping plate (31), an adjusting bolt (33) is screwed on the fixing block (32) and can be movably extended into the protective cover (2), and an L-shaped lower clamping plate (34) is provided in the protective cover (2) and is rotatably connected to the adjusting bolt (33), and with the assistance of the adjusting bolt (33), the lower clamping plate (34) can pass through the through hole A (21) and protrude to the outside of the protective cover (2).

2. The protective cover of the thermocouple with a long service life according to claim 1, characterized in that: The threaded connection seat (4) comprises a fixing seat (41) fixed to the outer wall of the thermocouple (1) rod body, an external thread sleeve (42) is fixedly connected to the bottom of the fixing seat (41), and an internal thread strip matched with the external thread sleeve (42) is provided on the inner wall of the opening of the protective sleeve (2).

3. The protective cover of the thermocouple with a long service life according to claim 2, characterized in that: Two fixing blocks (32) are provided, and screw holes (321) adapted to the adjusting bolts (33) are provided on the two fixing blocks (32), and through holes B (311) adapted to the adjusting bolts (33) are provided on the side walls of the protective cover (2) and the upper clamping plate (31).

4. The protective cover of the thermocouple with a long service life according to claim 3, characterized in that: A bearing is embedded in the connection between the L-shaped lower clamping plate (34) and the adjusting bolt (33), and the end of the adjusting bolt (33) is fixedly connected to the inner wall of the bearing.

5. The protective cover of the thermocouple with a long service life according to claim 4, characterized in that: The outer wall of the lower section of the L-shaped lower clamping plate (34) has a consistent curvature with the outer wall of the protective sleeve (2), and the curvature of the upper section of the L-shaped lower clamping plate (34) close to the adjusting bolt (33) is consistent with the curvature of the inner wall of the protective sleeve (2).

6. The protective cover of the thermocouple with a long service life according to claim 5, characterized in that: When the adjusting bolt (33) is continuously rotated toward a direction close to the axis of the protective sleeve (2), the outer wall of the lower section of the L-shaped lower clamping plate (34) will be hidden in the through hole A (21); when the adjusting bolt (33) is continuously rotated toward a direction away from the axis of the protective sleeve (2), the outer wall of the lower section of the L-shaped lower clamping plate (34) will protrude to the outside of the through hole A (21).

7. The protective cover of the thermocouple with a long service life according to claim 6, characterized in that: The bottom end surface of the upper clamping plate (31) is embedded with a sealing rubber ring (35) which is tightly fitted with the outer wall of the equipment on the side.

8. The protective cover of the thermocouple with a long service life according to claim 7, characterized in that: A threaded rubber strip (36) adapted to the adjusting bolt (33) is adhered in the through hole B (311).

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