CN218239084U - Protective sleeve of temperature measuring element in direct contact with medium - Google Patents
Protective sleeve of temperature measuring element in direct contact with medium Download PDFInfo
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- CN218239084U CN218239084U CN202222082780.1U CN202222082780U CN218239084U CN 218239084 U CN218239084 U CN 218239084U CN 202222082780 U CN202222082780 U CN 202222082780U CN 218239084 U CN218239084 U CN 218239084U
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- sleeve
- metal sleeve
- medium
- temperature measuring
- measuring element
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Abstract
A temperature measuring element protective sleeve in direct contact with a medium comprises a protective sleeve component and a guide support component for supporting and fixing an extending end of the protective sleeve component, wherein the protective sleeve component comprises a connecting flange, a metal sleeve, a hoop, a wire mesh and a blocking plate; one end of the metal sleeve is fixedly connected with the pipe connecting flange, and the other end of the metal sleeve is fixedly connected and sealed by a blocking plate; the temperature measuring element is arranged in the metal sleeve, and a guide hole is formed in the wall of the metal sleeve at the position of the temperature measuring element. The guide holes are arranged in a Y-shaped structure on the cross section of the metal sleeve, the main body of the Y-shaped structure is a medium inflow side, and the bifurcation side is a medium outflow side. The utility model has the advantages of simple structure, strong adaptability can make measured medium and temperature element direct contact, can also avoid the scale deposit in the sleeve pipe outside, improvement temperature measurement sensitivity that can great degree, accessible guide bracket restriction cantilever protective case circumference direction's swing again to enable the sleeve pipe freely to stretch out and draw back in the axial.
Description
Technical Field
The utility model relates to a petrochemical equipment technical field especially relates to a with medium direct contact temperature measurement element protective case.
Background
The protection sleeve structure of the temperature measuring element in the prior art is shown in figure 1 and mainly comprises a connecting pipe flange 1, a metal sleeve 2, a blocking plate 7 and a rib plate 8. The temperature measuring element protective sleeve with the structure has the advantages that heat transfer is finally transferred to the temperature measuring element through the metal sleeve and the internal air by means of heat conduction, the measured temperature can deviate from the real temperature, scaling can be generated on the outer surface of the metal sleeve after long-term use, the thermal resistance of dirt is increased, the heat transfer coefficient is reduced, the actually measured temperature deviation is large, the actual temperature of a catalyst or an adsorbent bed layer in the equipment can not be really reflected, the quality of a product is influenced, particularly, the working condition with strict temperature control requirements is met, adverse effects can be brought to the operation of the equipment, and even hidden dangers are brought to the safe operation of the equipment. The rib plate of the temperature measuring element protective sleeve with the structure is welded with the sleeve, and if the inner extension length of the sleeve is large, the axial thermal displacement of the sleeve can be limited when the equipment runs at high temperature, so that the sleeve can be bent and deformed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can with medium direct contact's temperature element protective case, improve temperature measurement sensitivity to set up guide bracket, both can restrict sheathed tube axial oscillation, can release the thermal stress of sleeve pipe body again.
In order to realize the purpose, the utility model discloses a technical scheme is:
a temperature measuring element protective sleeve in direct contact with a medium comprises a protective sleeve component and a guide support component for supporting and fixing an extending end of the protective sleeve component, wherein the protective sleeve component comprises a connecting flange, a metal sleeve, a hoop, a wire mesh and a blocking plate; one end of the metal sleeve is fixedly connected with the pipe connecting flange, and the other end of the metal sleeve is fixedly connected and sealed by a blocking plate; the temperature measuring element is arranged in the metal sleeve, and a guide hole is formed in the wall of the metal sleeve at the position of the temperature measuring element.
The guide holes are arranged in a Y-shaped structure on the cross section of the metal sleeve, the main body of the Y-shaped structure is a medium inflow side, and the bifurcation side is a medium outflow side.
The part of the metal sleeve pipe, which is provided with the guide hole, is wrapped by a wire mesh, and the wire mesh is firmly tied up by a plurality of hoops which are uniformly distributed.
The silk screen comprises two layers, wherein the inner layer is a fine mesh silk screen, and the outer layer is a coarse mesh silk screen.
The guide support component comprises a rib plate and support angle steel, one end of the rib plate is fixedly connected to the upper end face of the support angle steel in an angle symmetry mode, and the U-shaped bolts clamp the metal sleeve and penetrate through the support angle steel to be connected through nuts so as to install the protective sleeve component on the support angle steel.
The utility model discloses can make measured medium get into protective sheath intraductal with temperature element direct contact, improve temperature measurement sensitivity, accessible guide bracket restriction protective sheath circumference direction's swing again to can make the sleeve pipe freely stretch out and draw back in the axial, release the thermal stress of sleeve pipe body. The utility model discloses simple structure, strong adaptability, but the wide application is equipped with solid catalyst or adsorbent in the high temperature equipment.
Drawings
FIG. 1 is a schematic view of a protective sleeve for a temperature measuring element of the prior art;
FIG. 2 is an enlarged view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural diagram of the present invention;
FIG. 4 is an enlarged view taken along line A-A of FIG. 3;
FIG. 5 is an enlarged cross-sectional view taken along line B-B of FIG. 3;
fig. 6 is a schematic structural view of the clamp of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 3, a protective sleeve for a temperature measuring element in direct contact with a medium comprises a protective sleeve assembly and a guide bracket assembly for supporting and fixing an extending end of the protective sleeve assembly, wherein the protective sleeve assembly comprises a connecting flange 1, a metal sleeve 2, a clamp 3, a wire mesh 6 and a blocking plate 7; one end of the metal sleeve 2 is welded with the pipe connecting flange 1, the other end of the metal sleeve is welded and sealed by a blocking plate 7, the whole metal sleeve 2 is of an inward extending cantilever structure, and the inner elongation L of the metal sleeve is in accordance with the length of the temperature measuring element and the inner diameter D of the device where the temperature measuring element is located i For determination, L = (1/3. About.1/2) D is generally used i . The temperature measuring element is arranged in the metal sleeve 2, and a guide hole is formed in the wall of the metal sleeve 2 at the position of the temperature measuring element, so that a fluid medium enters the protective sleeve and directly contacts with the temperature measuring element.
As shown in FIG. 5, the guiding holes are arranged in a Y-shaped structure on the cross section of the metal sleeve 2, the main body of the Y-shaped structure is the medium inflow side, the branch side is the medium outflow side, and the deflection angle of the branch holes is 30 degrees, so that the fluid medium vertically flows through the temperature measuring element, reaches the area of the measured medium without dead angles, and has a guiding function. The initial position L1 of the opening part is determined according to the inward extending length of the temperature measuring element, and the opening range is larger than the length of the temperature measuring element. The diameter of the guide hole is determined according to the nominal diameter of the metal sleeve 2, the value is generally 8-12 mm, and the distance between the guide holes in the axial direction of the metal sleeve 2 is about 20mm.
The part of the metal sleeve 2 provided with the guide hole is wrapped by a silk screen 6, and the silk screen 6 is evenly distributed with a plurality of hoops 3Tie up firmly, 6 both ends of silk screen are respectively tied up a clamp 3, and middle part evenly arranges clamp 3, and its interval is about 200mm, and the guiding hole should be avoided to the position is tied up to clamp 3. The hoop 3 is fastened and connected by a bolt 4 and a nut 5; the hoop 3 is of a two-piece split structure so as to be convenient to install, and the structure of the hoop is shown in figure 6; the thickness of the hoop 3 is 2mm, the width is 10mm, and the inner diameter d i The diameter of the metal sleeve 2 is larger than the outer diameter of the metal sleeve by about 2mm, and a bolt hole with the diameter of 5mm is drilled at the bending connection part; after the two pieces of hoops are assembled, a gap of at least 2mm is reserved at the corresponding opening, so that the silk screen 6 can be compressed after the bolt 4 and the nut 5 are fastened; the specification of the bolt 4 is M4 multiplied by 12, and the specification of the nut 5 is M4.
The silk screen 6 comprises two layers, wherein the inner layer is a fine mesh silk screen, and the outer layer is a coarse mesh silk screen. The aperture of the fine mesh wire mesh is smaller than the size of the solid catalyst or adsorbent particles, so that the solid catalyst or adsorbent is prevented from entering the metal sleeve 2; the aperture of the coarse mesh screen is slightly larger than that of the fine mesh screen, so that the fine mesh screen is protected from being damaged; the width of the silk screen is L2, the distance between the edge of the silk screen and the centers of the guide holes at the two ends is about 35mm, the joints of the silk screen wrapped are lapped by 20mm, and the joints of 6 two layers of silk screens are arranged in a staggered manner; the distance L3 of the edge of the screen 6 from the outside of the closure plate 7 is approximately 100mm.
The outer extending end of the protective sleeve assembly is supported and fixed by a guide support so as to limit the circumferential direction swing of the cantilever protective sleeve assembly and enable the sleeve to freely extend and retract in the axial direction, the guide support assembly comprises a rib plate 8 and support angle steel 9, and one end of the rib plate 8 is fixedly connected to the upper end face of the support angle steel 9 in an angle symmetry manner; the U-bolt 10 is fastened to the metal sleeve 2 and passes through the support angle 9 and is connected by a nut 11 to mount the protection sleeve assembly on the support angle 9.
The rib plate 8 is two pieces of flat steel, the included angle is 60 degrees, and the wide surface of the flat steel is parallel to the fluid direction, so that the fluid resistance is reduced to the minimum; one end of the rib plate 8 is fixedly connected with the inner wall of the equipment cylinder body, and the other end of the rib plate is fixedly connected with the support angle steel 9, as shown in figures 3 and 4; two bolt holes are drilled in the support angle steel 9, the U-shaped bolt 10 clamps the metal sleeve 2 and penetrates through the bolt holes to be connected and fixed with the nut 11, the nut 11 is double-nut, the first nut is screwed back for one circle, and the purpose is to enable the metal sleeve 2 to freely stretch in the axial direction, release thermal stress and then be locked by the second nut.
The foregoing is a more detailed description of the present invention, taken in conjunction with the accompanying detailed description of the preferred embodiments, and it is not intended to limit the invention to the particular forms disclosed. To the technical field of the utility model, the technical personnel can also make some simple deformation and improvement without departing from the utility model discloses the prerequisite of design, all should regard as the protection scope of the utility model.
Claims (5)
1. The utility model provides a with medium direct contact temperature element protective case, includes the guide bracket subassembly of the overhanging end of protection sleeve subassembly and support fixed protection sleeve subassembly, its characterized in that: the protective sleeve component comprises a connecting pipe flange (1), a metal sleeve (2), a clamp (3), a wire mesh (6) and a blocking plate (7); one end of the metal sleeve (2) is fixedly connected with the pipe connecting flange (1), and the other end of the metal sleeve is fixedly connected and sealed by a plugging plate (7); a temperature measuring element is arranged in the metal sleeve (2), and a guide hole is formed in the pipe wall of the metal sleeve (2) at the temperature measuring element.
2. The protective sleeve for the temperature measuring element in direct contact with the medium as claimed in claim 1, wherein: the guide holes are arranged in a Y-shaped structure on the cross section of the metal sleeve (2), the trunk of the Y-shaped structure is the medium inflow side, and the bifurcation side is the medium outflow side.
3. The protective sleeve for the temperature measuring element in direct contact with the medium as claimed in claim 2, wherein: the part of the metal sleeve (2) provided with the guide hole is wrapped by a wire mesh (6), and the wire mesh (6) is firmly tied up by a plurality of evenly distributed hoops (3).
4. The protective sleeve for the temperature measuring element in direct contact with the medium as claimed in claim 3, wherein: the silk screen (6) comprises two layers, wherein the inner layer is a fine mesh silk screen, and the outer layer is a coarse mesh silk screen.
5. A protective sleeve for a temperature sensing element in direct contact with a medium as claimed in any one of claims 1 to 4, wherein: the guide support component comprises a rib plate (8) and support angle steel (9), one end of the rib plate (8) is symmetrically fixed on the upper end face of the support angle steel (9), and a U-shaped bolt (10) clamps the metal sleeve (2) and penetrates through the support angle steel (9) to be connected with a nut (11) so as to install the protection sleeve component on the support angle steel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222082780.1U CN218239084U (en) | 2022-08-09 | 2022-08-09 | Protective sleeve of temperature measuring element in direct contact with medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222082780.1U CN218239084U (en) | 2022-08-09 | 2022-08-09 | Protective sleeve of temperature measuring element in direct contact with medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218239084U true CN218239084U (en) | 2023-01-06 |
Family
ID=84680737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222082780.1U Active CN218239084U (en) | 2022-08-09 | 2022-08-09 | Protective sleeve of temperature measuring element in direct contact with medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218239084U (en) |
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2022
- 2022-08-09 CN CN202222082780.1U patent/CN218239084U/en active Active
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