CN212540205U

CN212540205U - Thermal analysis sampling cup

Info

Publication number: CN212540205U
Application number: CN202021169724.6U
Authority: CN
Inventors: 杨立新; 徐随山
Original assignee: Nanjing Huaxin Analysis Instrument Manufacturing Co ltd
Current assignee: Nanjing Huaxin Analysis Instrument Manufacturing Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-02-12
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a thermal analysis sampling cup, which comprises a cup body and a thermocouple assembly; the cup body is provided with a cavity; a first connecting groove and a second connecting groove are vertically arranged at the edge part of the bottom end of the cup body, a concave part is arranged in the middle of the bottom end of the cup body, a first groove body communicated with the first connecting groove is arranged at one side of the concave part, a second groove body communicated with the second connecting groove is arranged at the other side of the concave part, and the depth of the second groove body is greater than that of the first groove body; the thermocouple assembly comprises two thermocouple wires, a protective sleeve and an insulating sleeve, and the bottom end of the protective sleeve is provided with an opening and extends to the bottom of the second groove body; the insulating sleeve is positioned in the protective sleeve, and the bottom end of the insulating sleeve extends to the concave part; first thermocouple silk is located insulating sleeve and stretches out to the concave part after along the first cell body and rolls over into first connecting groove again after its free end stretches out from insulating sleeve, and second thermocouple silk is located between insulating sleeve and the protective case and rolls over into the second connecting groove again along the second cell body after its free end stretches out from the protective case bottom. The utility model discloses the difficult short circuit of thermocouple silk.

Description

Thermal analysis sampling cup

Technical Field

The utility model relates to a thermal analysis sampling cup.

Background

The thermal analysis sample cup is a sensor used for measuring the phase change temperature in the solidification process of molten metal in the analysis of indexes such as the carbon content of molten iron, and transmits a temperature signal of the molten iron in the thermal analysis sample cup to a thermal analyzer for analyzing the carbon and silicon content of the molten iron; the thermal analysis sample cup adopts thermocouple measurement, the ends of two conductors (called thermocouple wires or thermodes) with different components are jointed into a loop, when the temperatures of two joints are different, electromotive force is generated in the loop, the phenomenon is called thermoelectric effect, the electromotive force is called thermoelectric force, and the thermocouple measures the temperature by using the principle. The ends of the thermocouple wires with different components are jointed, the rest parts are well insulated, and the contact of the rest parts can generate short circuit conditions, so that the analysis cannot be carried out; in the existing thermal analysis sample cup, two thermocouple wires extend out from the bottom of the cup body and are bent towards two sides of the cup body, so that a touch condition can be generated;

in view of the above, it is an urgent problem in the art to provide a thermal analysis sampling cup to overcome the above drawbacks.

Disclosure of Invention

The utility model aims at providing a thermal analysis sampling cup prevents that two thermocouple wires from taking place the short circuit.

For solving the above technical problem, the technical scheme of the utility model is that: the thermal analysis sampling cup comprises a cavity which is hollow inside and has an opening at the upper end and is used for containing molten iron; a first connecting groove and a second connecting groove are vertically arranged at the edge part of the bottom end of the cup body, a concave part is arranged in the middle of the bottom end of the cup body, a first groove body communicated with the first connecting groove is arranged at one side of the concave part, a second groove body communicated with the second connecting groove is arranged at the other side of the concave part, and the depth of the second groove body is greater than that of the first groove body; the edge part of the bottom end of the cup body is vertically provided with a first positioning groove and a second positioning groove, and the first positioning groove and the second positioning groove are distributed with a first connecting groove and a second connecting groove in a staggered manner;

the thermocouple assembly comprises two thermocouple wires, a protective sleeve and an insulating sleeve, the protective sleeve is vertically arranged in the center of the cup body and sleeved outside the thermocouple wires, the top end of the protective sleeve is closed, and the bottom end of the protective sleeve is opened and extends to the bottom of the second groove body; the insulating sleeve is positioned in the protective sleeve, the top end of the insulating sleeve is close to the top end of the protective sleeve, and the bottom end of the insulating sleeve extends to the concave part; two thermocouple wires include first thermocouple wire and second thermocouple wire, the one end welding separately of first thermocouple wire and second thermocouple wire, and the welding one end of two thermocouple wires is close to the protective case top, and wherein first thermocouple wire is located insulating cover intraductally and its free end stretches out the concave part from insulating cover, then along first connecting groove is folded into again to first cell body, and the second thermocouple wire is located between insulating cover and the protective case and its free end stretches out then along from the protective case bottom the second connecting groove is folded into again to the second cell body.

According to the scheme, the depth of the second groove body is 3-4 mm greater than that of the first groove body.

According to the scheme, the depth of the first positioning groove is equal to that of the second positioning groove, and the depth of the first connecting groove is equal to that of the second connecting groove.

According to the scheme, the depth of the first positioning groove is greater than that of the first connecting groove; the notches of the first positioning groove and the second positioning groove are larger than the notches of the first connecting groove and the second connecting groove; thermal analysis sampling cup is used for supporting the cup and the plug connector cooperation installation of signal conduction with locating sampling cup bottom in addition when using, and the constant head tank is corresponding to on the support column of plug connector, and the cup can be placed firmly.

According to the scheme, the first positioning groove, the second positioning groove, the first connecting groove and the second connecting groove are all arc grooves; the opening at one side of the arc groove enables the bottom of the cup body to be more easily sleeved on the supporting column and the connecting column of the additionally arranged cup body plug connector.

According to the scheme, the depth of the cavity is 40-50mm, and the height of the protective sleeve in the cavity is 20-30 mm; this cavity degree of depth is difficult for collapsing out when the molten iron waters, and secondly, the high scope of this protective case makes the thermocouple wire response position in the protective case roughly be located the cavity middle part, and the temperature of response is more accurate.

According to the scheme, the outer diameter of the protective sleeve is 4-5mm, and the wall thickness is 0.5-1 mm.

According to the scheme, the protective sleeve is a quartz tube.

According to the scheme, the cup body is made of epoxy resin sand.

The utility model discloses following beneficial effect has:

in the utility model, the depth of the second groove body is larger than that of the first groove body, the bottom of the protective sleeve is flush with the bottom of the second groove body, the bottom of the concave part is flush with the bottom of the first groove body, the bottom of the insulating sleeve exceeds the bottom of the concave part, the first thermocouple wire is positioned in the insulating sleeve, the free end of the first thermocouple wire extends out of the concave part from the insulating sleeve, and then the second thermocouple wire is folded into the first connecting groove along the first groove body, the second thermocouple wire is positioned between the insulating sleeve and the protective sleeve, the free end of the second thermocouple wire extends out of the bottom of the protective sleeve and then is folded into the second connecting groove along the second groove; first thermocouple silk and second thermocouple silk stretch out and extend to both sides after buckling from protective case bottom, and the position of buckling forms the difference in height, and the position of buckling of second thermocouple silk corresponds the department, and first thermocouple silk still continues downwardly extending in insulation support, has avoided both when same level is buckled, and the condition of touching can take place for the kink, prevents that two thermocouple silks from taking place the short circuit, simple structure.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an overall schematic view of the bottom structure of the embodiment of the present invention;

FIG. 3 is a schematic top view of the present embodiment;

FIG. 4 is a schematic bottom view of the present embodiment;

FIG. 5 is a schematic front view of the present embodiment;

FIG. 6 is a schematic diagram of a back structure of the present embodiment;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 8 is a sectional view taken along line a-a of fig. 5.

Reference numerals:

1. a cup body; 101. a cavity; 102. a first connecting groove; 103. a second connecting groove; 104. a recess; 105. a first tank body; 106. a second tank body; 107. a first positioning groove; 108. a second positioning groove;

2. a thermocouple assembly; 201. a thermocouple wire; 201a, a first thermocouple wire; 201b, a second thermocouple wire; 202. protecting the sleeve; 203. an insulating sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 8, the present invention relates to a thermal analysis sampling cup, which includes a cup body 1 and a thermocouple assembly 2; the thermocouple assembly 2 is used to continuously detect the temperature of the molten iron in the cup 1 when in use.

The cup body 1 is internally provided with a hollow cavity 101 with an opening at the upper end for containing molten iron; a first connecting groove 102 and a second connecting groove 103 are vertically arranged at the edge of the bottom end of the cup body 1, a concave part 104 is arranged in the middle of the bottom end of the cup body 1, a first groove body 105 communicated with the first connecting groove 102 is arranged on one side of the concave part 104, a second groove body 106 communicated with the second connecting groove 103 is arranged on the other side of the concave part 104, the depth of the second groove body 106 is larger than that of the first groove body 105, the depth of the second groove body 106 is 3-4 mm larger than that of the first groove body 105, in the embodiment, the depth of the second groove body 106 is 5-6 mm, and the depth of the first groove body 105 is about 2 mm; a first positioning groove 107 and a second positioning groove 108 are also vertically arranged at the edge part of the bottom end of the cup body 1, and the first positioning groove 107 and the second positioning groove 108 are distributed with the first connecting groove 102 and the second connecting groove 103 in a staggered manner;

the first positioning groove 107 and the second positioning groove 108 are arranged on the left side and the right side of the second groove body 106; first constant head tank 107 and second constant head tank 108 degree of depth equal, first connecting groove 102 and second connecting groove 103 degree of depth equal, the degree of depth of first constant head tank 107 is greater than the degree of depth of first connecting groove 102, the notch of first constant head tank 107 and second constant head tank 108 all is greater than the notch of first connecting groove 102 and second connecting groove 103, the degree of depth and the notch of first constant head tank 107 and second constant head tank 108 are all great, make cup 1's location support relatively stable. In this embodiment, the first positioning groove 107, the second positioning groove 108, the first connecting groove 102 and the second connecting groove 103 are all arc grooves, which are easy to process and convenient for matching and contacting with the contact part of the existing sample cup plug connector and the cup body 1; with reference to fig. 7 and 8, the joint between the first slot 105 and the first connecting slot 102 is smooth and circular arc-shaped, and the joint between the second slot 106 and the second connecting slot 103 is also smooth and circular arc-shaped, so that compared with right-angle bending, the circular arc-shaped connecting surface is smoother and is not easy to break the thermocouple wire 201.

The thermocouple assembly 2 comprises two thermocouple wires 201, a protective sleeve 202 and an insulating sleeve 203; the protective sleeve 202 is sleeved outside the thermocouple wire 201 to prevent the thermocouple wire 201 from contacting molten iron, the protective sleeve 202 is vertically arranged in the center of the cup body 1, the top end of the protective sleeve 202 is closed, the bottom end of the protective sleeve is opened and extends to the bottom of the second groove body 106, the protective sleeve 202 is used for preventing the thermocouple wire 201 from directly contacting the measured molten iron, and the protective sleeve can also be used for supporting and fixing the thermocouple wire 201 and increasing the strength of the thermocouple wire; the insulating sleeve 203 is positioned in the protective sleeve 202, the top end of the insulating sleeve 203 is close to the top end of the protective sleeve 202, and the bottom end of the insulating sleeve 203 extends to the concave part 104; the two thermocouple wires 201 include a first thermocouple wire 201a and a second thermocouple wire 201b, in this embodiment, the first thermocouple wire 201a is nickel chromium, and the second thermocouple wire 201b is nickel silicon; the first thermocouple wire 201a and the second thermocouple wire 201b are welded at one end, and the welded ends of the first thermocouple wire 201a and the second thermocouple wire 201b are close to the top end of the protective sleeve 202, wherein the first thermocouple wire 201a is positioned in the insulating sleeve 203, and the free end of the first thermocouple wire 201a extends out of the insulating sleeve 203 to the concave part 104 and then is folded into the first connecting groove 102 along the first groove body 105, and the second thermocouple wire 201b is positioned between the insulating sleeve 203 and the protective sleeve 202, and the free end of the second thermocouple wire 201b extends out of the bottom end of the protective sleeve 202 and then is folded into the second connecting groove 103 along the second groove body 106; the first thermocouple wire 201a is tightly attached to the bottom of the first slot 105 when extending in the first slot 105, and the second thermocouple wire 201b is tightly attached to the bottom of the second slot 106 when extending in the second slot 106; the depth of the cavity 101 is 40-50mm, the height of the protective sleeve 202 in the cavity 101 is 20-30mm, the outer diameter of the protective sleeve 202 is 4-5mm, and the wall thickness is 0.5-1 mm. The protective sleeve 202 is a quartz tube; the protective sleeve 202 and the cup body 1 are sealed by ceramic blank mud, and the cup body 1 is made of epoxy resin sand.

In the utility model, the depth of the second tank body 106 is greater than the depth of the first tank body 105, the bottom of the protective sleeve 202 is flush with the bottom of the second tank body 106, the bottom of the concave part 104 is flush with the bottom of the first tank body 105, the bottom of the insulating sleeve 203 exceeds the bottom of the concave part 104, the first thermocouple wire 201a is positioned in the insulating sleeve 203, the free end of the first thermocouple wire extends out of the concave part 104 from the insulating sleeve 203, and then the first thermocouple wire is folded into the first connecting groove 102 along the first tank body 105, the second thermocouple wire 201b is positioned between the insulating sleeve 203 and the protective sleeve 202, the free end of the second thermocouple wire extends out of the bottom of the protective sleeve 202, and then the second thermocouple wire is folded into the second connecting; first thermocouple wire 201a and second thermocouple wire 201b stretch out and extend to both sides after buckling from protective sleeve 202 bottom, and the position of buckling forms the difference in height, and second thermocouple wire 201b buckles the position and corresponds the department, and first thermocouple wire 201a still continues downwardly extending in insulation support 203, has avoided both to buckle at same level, and the condition of touching can take place for the kink, prevents that two thermocouple wires 201 from taking place the short circuit, simple structure.

In the utility model, the first connecting groove 102 and the second connecting groove 103 at the bottom of the cup body 1 are used for sleeving the connecting columns on the additionally arranged plug connectors, only the connecting grooves are sleeved on the connecting columns, and the thermocouple wires 201 in the connecting grooves are contacted with the connecting columns, so that the signal transmission can be carried out and the signal can be output to an external analyzer, and the connecting mode is simple; the concave part 104, the first groove body 105 and the second groove body 106 which are arranged on the cup body 1 form a containing passage for the two thermocouple wires 201, the thermocouple wires 201 cannot be extruded and rubbed with the non-communicated part of the additionally arranged plug connector, and the thermocouple wires 201 are not easy to damage.

The utility model discloses the part that does not relate to all is the same with prior art or adopts prior art to realize.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and it is not to be understood that the specific embodiments of the present invention are limited to these descriptions. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A thermal analysis sampling cup, comprising: comprises a cup body (1) and a thermocouple assembly (2);

a cavity (101) which is hollow inside and has an opening at the upper end is arranged in the cup body (1) and is used for containing molten iron; a first connecting groove (102) and a second connecting groove (103) are vertically arranged at the edge of the bottom end of the cup body (1), a concave part (104) is arranged in the middle of the bottom end of the cup body (1), a first groove body (105) communicated with the first connecting groove (102) is arranged at one side of the concave part (104), a second groove body (106) communicated with the second connecting groove (103) is arranged at the other side of the concave part (104), and the depth of the second groove body (106) is greater than that of the first groove body (105); a first positioning groove (107) and a second positioning groove (108) are vertically arranged at the edge part of the bottom end of the cup body (1), and the first positioning groove (107) and the second positioning groove (108) are distributed with the first connecting groove (102) and the second connecting groove (103) in a staggered manner;

the thermocouple assembly (2) comprises two thermocouple wires (201), a protective sleeve (202) and an insulating sleeve (203), the protective sleeve (202) is vertically arranged in the center of the cup body (1) and sleeved outside the thermocouple wires (201), the top end of the protective sleeve (202) is closed, and the bottom end of the protective sleeve (202) is opened and extends to the bottom of the second groove body (106); the insulating sleeve (203) is positioned in the protective sleeve (202), the top end of the insulating sleeve (203) is close to the top end of the protective sleeve (202), and the bottom end of the insulating sleeve (203) extends to the concave part (104); the two thermocouple wires (201) comprise a first thermocouple wire (201 a) and a second thermocouple wire (201 b), one end of each of the first thermocouple wire (201 a) and the second thermocouple wire (201 b) is welded, the welded end of each of the two thermocouple wires (201) is close to the top end of the protective sleeve (202), the first thermocouple wire (201 a) is located in the insulating sleeve (203), the free end of the first thermocouple wire extends out of the insulating sleeve (203) to the concave portion (104), then the first thermocouple wire is folded into the first connecting groove (102) along the first groove body (105), the second thermocouple wire (201 b) is located between the insulating sleeve (203) and the protective sleeve (202), and the free end of the second thermocouple wire extends out of the bottom end of the protective sleeve (202) and then is folded into the second connecting groove (103) along the second groove body (106).

2. The thermal analysis sampling cup of claim 1, wherein: the depth of the second groove body (106) is 3-4 mm greater than that of the first groove body (105).

3. The thermal analysis sampling cup of claim 1, wherein: the depth of the first positioning groove (107) is equal to that of the second positioning groove (108), and the depth of the first connecting groove (102) is equal to that of the second connecting groove (103).

4. The thermal analysis sampling cup of claim 2, wherein: the depth of the first positioning groove (107) is greater than that of the first connecting groove (102); the notches of the first positioning groove (107) and the second positioning groove (108) are larger than the notches of the first connecting groove (102) and the second connecting groove (103).

5. The thermal analysis sampling cup of claim 1, wherein: the first positioning groove (107), the second positioning groove (108), the first connecting groove (102) and the second connecting groove (103) are all arc grooves.

6. The thermal analysis sampling cup of claim 1, wherein: the depth of the cavity (101) is 40-50mm, and the height of the protective sleeve (202) in the cavity (101) is 20-30 mm.

7. The thermal analysis sampling cup of claim 1, wherein: the outer diameter of the protective sleeve (202) is 4-5mm, and the wall thickness is 0.5-1 mm.

8. The thermal analysis sampling cup of claim 1, wherein: the protective sleeve (202) is a quartz tube.

9. The thermal analysis sampling cup of claim 1, wherein: the cup body (1) is made of epoxy resin sand.