Armored thermocouple and installation structure of armored thermocouple

Abstract

The utility model discloses a sheathed thermocouple and a mounting structure of the sheathed thermocouple. The sheathed thermocouple comprises a temperature measuring probe. The temperature measuring probe is provided with a through mounting channel, the mounting channel is used for mounting part of the sheathed thermocouple wire, one end, close to the temperature measuring end of the sheathed thermocouple wire, of the mounting channel is provided with a reducing part, and the aperture of the reducing part is increased from inside to outside along the axial direction of the mounting channel. According to the utility model, one end, close to the temperature measuring end of the sheathed thermocouple wire, of the mounting channel is provided with the reducing part, and the aperture of the reducing part is increased from inside to outside along the axial direction of the mounting channel, so that compared with the prior art, the contact area between the temperature measuring end of the sheathed thermocouple wire and the melt in the mold is increased; therefore, the response speed of the sheathed thermocouple can be improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of thermocouple, concretely relates to an armored thermocouple and the mounting structure of armored thermocouple. BACKGROUND

[0002] Armored thermocouple is a kind of commonly used temperature measuring element, it can directly measure the temperature of mould, although the appearance of existing armored thermocouple can be different, but their basic structure is roughly same. Existing armored thermocouple is usually provided with protective sleeve, the protective sleeve is made of heat-resistant and wear-resistant alloy material, armored thermocouple wire is usually installed in the protective sleeve, the temperature measuring end of armored thermocouple wire is contacted with the melt in mould interior, and the temperature of melt in mould interior is detected.

[0003] Due to the protection of protective sleeve, the contact area between the temperature measuring end of existing armored thermocouple wire and melt in mould interior is small, further reduces the response speed of armored thermocouple.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the defects of prior art, and the first purpose of the utility model is to provide an armored thermocouple, which comprises a temperature measuring probe, the temperature measuring probe is provided with a through installation channel, one end of the installation channel close to the temperature measuring end of armored thermocouple wire has a variable-diameter part, and the variable-diameter part increases in diameter from inside to outside along the axial direction of the installation channel, so that the contact area between the temperature measuring end of armored thermocouple wire and melt in mould is increased, and the response speed of the armored thermocouple can be improved.

[0006] To solve the above technical problems, the basic concept of the technical scheme of the utility model is as follows:

[0007] An armored thermocouple, comprising,

[0008] A temperature measuring probe is provided with a through installation channel for installing part of armored thermocouple wire.

[0009] One end of the installation channel close to the temperature measuring end of armored thermocouple wire has a variable-diameter part, and the variable-diameter part increases in diameter from inside to outside along the axial direction of the installation channel.

[0010] Preferably, the variable-diameter part gradually increases in diameter from inside to outside.

[0011] Preferably, the variable-diameter part extends to the end of the installation channel from inside to outside.

[0012] Preferably, the variable-diameter part is a tapered chamfer structure arranged at one end of the installation channel.

[0013] Preferably, the temperature measuring end of the armored thermocouple wire extends within the variable diameter portion of the installation channel.

[0014] Preferably, the temperature measuring end of the armored thermocouple wire extends no more than the largest, outward end of the variable diameter portion.

[0015] The second purpose of the utility model is to provide a mounting structure of armored thermocouple, which is used for mounting the armored thermocouple on a mold, comprising,

[0016] The support portion is connected with the temperature measuring probe and is used for mounting at least part of the armored thermocouple wire extending outside the temperature measuring probe.

[0017] The mounting portion is used for mounting the support portion on the mold.

[0018] Preferably, the support portion has oppositely arranged first and second ends, the first end is connected with one end of the temperature measuring probe away from the variable diameter portion, and the second end is connected with the mounting portion.

[0019] Preferably, the support portion is provided with a mounting cavity, the mounting cavity is communicated with the first and second ends, and is used for mounting at least part of the armored thermocouple wire outside the temperature measuring probe.

[0020] Preferably, the mounting portion comprises,

[0021] The pressing plate is abutted with the second end of the support portion and is used for pressing the support portion in the mold.

[0022] The connecting piece is used for connecting the pressing plate with the mold.

[0023] Compared with the prior art, the utility model has the following beneficial effects after adopting the above technical scheme.

[0024] In the utility model, one end of the installation channel close to the temperature measuring end of the armored thermocouple wire has a variable diameter portion, and the variable diameter portion increases in diameter from inside to outside along the axial direction of the installation channel, compared with the prior art, the design of the utility model can ensure that the contact area between the temperature measuring end of the armored thermocouple wire and the melt inside the mold is larger, so that the response speed of the armored thermocouple can be improved.

[0025] The specific embodiment of the utility model will be described in further detail in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This is a schematic diagram of the armored thermocouple, mounting structure, and mold assembly of this utility model;

[0028] Figure 2 This is a structural schematic diagram of the armored thermocouple and mounting structure assembly of this utility model from one angle.

[0029] Figure 3 This is a structural schematic diagram of the armored thermocouple and mounting structure assembly of this utility model from another angle.

[0030] Figure 4 This is a schematic diagram of the structure of the armored thermocouple of this utility model;

[0031] Figure 5 yes Figure 4 Enlarged view of region A in the middle;

[0032] Figure 6 This is a top view of the armored thermocouple, mounting structure, and mold assembly of this utility model;

[0033] Figure 7 yes Figure 6 Sectional view of section AA;

[0034] Figure 8 yes Figure 7 A magnified view of region B in the middle.

[0035] In the diagram: 1. Temperature probe; 11. Installation channel; 111. Variable diameter section; 2. Armored thermocouple wire; 3. Support section; 31. Installation cavity; 32. First end; 33. Second end; 4. Installation section; 41. Pressure plate; 411. Positioning groove; 42. Connector; 5. Mold.

[0036] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, the following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0038] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0039] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] The utility model provides a kind of armored thermocouple, armored thermocouple is installed on mould 5 by mounting structure, the temperature of melt in mould 5 is detected by armored thermocouple.

[0041] Armored thermocouple includes armored thermocouple wire 2, one end of armored thermocouple wire 2 is temperature measuring end, and the temperature measuring end contacts melt inside mould 5 to measure the temperature of melt in mould 5, the other end of armored thermocouple wire 2 is wiring end, and the outside of armored thermocouple wire 2 is made of the sleeve pipe of stainless steel, nickel-chromium alloy and the like metal material, and is filled with magnesium oxide filler inside, for reducing the heat conduction performance of armored thermocouple wire 2.

[0042] Armored thermocouple further includes transition pipe, extension line and tail plug.The one end of transition pipe is sequentially connected with extension line and tail plug, the other end of transition pipe is connected with the wiring end of armored thermocouple wire 2, and tail plug is usually connected with display, and the temperature information detected is output to display.

[0043] Specifically, transition pipe is used to connect armored thermocouple wire 2 and extension line, and is sealed inside by filling glue, and extension line is used to extend the connection distance of armored thermocouple.In addition, considering that extension line at the joint of transition pipe and extension line is easy to be damaged by excessive bending, spring sleeve pipe is also arranged at the joint.

[0044] The tail plug is provided with three-wire system, including two signal lines of armored thermocouple and a shielding line, the signal lines are used for transmitting the thermoelectric potential signal generated by the armored thermocouple and transmitting the thermoelectric potential signal to the display, so that the temperature measurement and monitoring are realized. The shielding line is used for isolating the interference signal received by the armored thermocouple during temperature measurement, avoiding the interference signal affecting the temperature measurement of the armored thermocouple, and further improving the accuracy and stability of the temperature measurement. It can be understood that the shielding line and the signal line usually maintain a certain insulation distance, so as to avoid the electrical interference between the shielding line and the signal line.

[0045] Since the temperature measuring end of the armored thermocouple wire 2 is often used for temperature measurement in relatively harsh environment, such as high temperature and high pressure environment, these environments will damage the temperature measuring end of the armored thermocouple wire 2, therefore, the armored thermocouple of the utility model includes a temperature measuring probe 1, which can protect the temperature measuring end of the armored thermocouple wire 2 to a certain extent, and reduce the damage degree of the temperature measuring end of the armored thermocouple wire 2.

[0046] As shown in Figures 1 to 8 The temperature measuring probe 1 is made of metal material, and the surface of the temperature measuring probe 1 is polished bright, when the temperature of the melt in the detection mold 5 is detected, it is ensured that there is no glue leakage between the temperature measuring probe 1 and the mold 5 when the temperature measuring probe 1 is assembled into the mold 5, which does not affect the detection result of the armored thermocouple. Preferably, the installation channel 11 is arranged at the center position of the temperature measuring probe 1.

[0047] Further, the one end of the installation channel 11 close to the temperature measuring end of the armored thermocouple wire 2 has a variable diameter part 111, the variable diameter part 111 increases in diameter from inside to outside along the axial direction of the installation channel 11. The design of the utility model can ensure that the contact area between the temperature measuring end of the armored thermocouple wire 2 and the melt in the mold is larger, so as to improve the thermal response speed of the armored thermocouple. It can be understood that the variable diameter part 111 can be designed as a stepped structure or a cylindrical structure, and the temperature measuring end is arranged in the stepped or cylindrical structure. It should be noted that the one end of the installation channel 11 away from the temperature measuring end of the armored thermocouple wire 2 is connected with the sleeve outside the armored thermocouple wire 2, realizing the fixation of the two, preferably, the one end of the installation channel 11 away from the temperature measuring end of the armored thermocouple wire 2 is connected with the sleeve outside the armored thermocouple wire 2 by welding.

[0048] In addition, the space utilization of the tapering portion 111 is low due to the stepped or cylindrical structure, and therefore, as an alternative to the stepped structure of the tapering portion 111, the tapering portion 111 gradually increases in diameter from the inside to the outside, which can improve the space utilization of the tapering portion 111 compared to the stepped structure. Preferably, the tapering portion 111 is a structure formed by machining a tapered chamfer at one end of the mounting channel 11.

[0049] Further, the tapering portion 111 extends to the end of the mounting channel 11 from the inside to the outside, that is, the position of the tapering portion 111 with the largest diameter is flush with one end of the mounting channel 11 close to the temperature measuring end of the armored thermocouple wire 2, and when the temperature measuring end of the armored thermocouple wire 2 contacts the melt inside the mold 5, it ensures that the temperature measuring end can receive more accurate temperature information, improving the temperature measurement accuracy and reliability. It can be understood that the temperature measuring end of the armored thermocouple wire 2 extends in the tapering portion 111 of the mounting channel 11.

[0050] Further, the temperature measuring end of the armored thermocouple wire 2 does not extend beyond the outward end of the tapering portion 111 with the largest diameter, which can reduce the interference of external factors on the temperature measurement results, thereby improving the accuracy of temperature measurement and ensuring that the temperature measuring end can operate stably for a long time. On the other hand, the temperature measuring end is located inside the temperature measuring probe 1 and can be better protected, thereby prolonging the service life of the armored thermocouple wire 2.

[0051] The utility model also provides a mounting structure of armored thermocouple for mounting the armored thermocouple on the mold 5, and the mounting structure of armored thermocouple comprises a support portion 3 and a mounting portion 4.

[0052] Further, the support portion 3 is connected with the temperature measuring probe 1 and is used for mounting at least part of the armored thermocouple wire 2 extending outside the temperature measuring probe 1, and the mounting portion 4 is used for mounting the support portion 3 on the mold 5. It should be noted that the length of the armored thermocouple wire 2 is usually long, and the length of the armored thermocouple wire 2 is greater than the length of the support portion 3, and the armored thermocouple wire 2 mounted outside the support portion 3 is mounted in the cable groove formed in the mold 5.

[0053] Specifically, the support portion 3 has oppositely arranged first and second ends 32 and 33, the first end 32 is connected with one end of the temperature measuring probe 1 away from the tapering portion 111, and the second end 33 is connected with the mounting portion 4.

[0054] Further, the support part 3 is provided with a mounting cavity 31, which is communicated with the first end 32 and the second end 33, and is used for mounting the at least part of the armored thermocouple wire 2 outside the temperature measuring probe 1. It can be understood that the mounting cavity 31 can be a first through hole penetrating along the length direction of the support part 3, and for the case that the armored thermocouple wire 2 is relatively long, a second through hole can be opened on the side wall of the mounting cavity 31, so that the armored thermocouple wire 2 located outside the first through hole enters the cable groove opened on the mold 5 through the second through hole.

[0055] In addition, as an alternative to the case that the mounting cavity 31 can be a first through hole penetrating along the length direction of the support part 3, and a second through hole is opened on the side wall of the mounting cavity 31, the mounting cavity 31 is provided as an open groove structure extending along the length direction of the support part 3. Since the armored thermocouple wire 2 itself has a certain hardness, by embedding the first end 32 of the temperature measuring probe 1 into the open groove structure, the armored thermocouple wire 2 located outside the open groove structure enters the cable groove opened on the mold 5 through the opening on the open groove structure. It should be noted that the support part 3 is preferably a slotted square steel.

[0056] Further, the mounting part 4 includes a pressing plate 41 and a connecting piece 42. The pressing plate 41 abuts against the second end 33 of the support part 3, and is used for pressing the support part 3 in the mold 5. The connecting piece 42 is used for connecting the pressing plate 41 with the mold 5. Through the cooperation of the connecting piece 42 and the pressing plate 41, the armored thermocouple can be stably assembled in the mold 5. It should be noted that the connecting piece 42 is a screw. Compared with the technical solution of the prior art using a bolt, the bolt needs to be connected with the mold 5 by setting a thread on the peripheral wall of the mounting hole of the mold 5. However, for some large molds 5, it is difficult to process and inconvenient to set the thread matched with the bolt. The screw of the present solution is screwed with the pressing plate 41 and then inserted into the mounting hole of the mold, so that the thread does not need to be set in the mounting hole of the mold, ensuring that the installation process is convenient and fast.

[0057] The purpose of using the pressing plate 41 is that during the temperature measurement process, the melt in the mold 5 will generate a pressure, which can be dispersed to the relatively large pressing plate 41 through the armored thermocouple, so as to reduce the pressure per unit area and prevent the armored thermocouple from being damaged due to excessive force.

[0058] In order to ensure the stability of the armored thermocouple connected with the pressing plate 41, the surface of the pressing plate 41 abutting against the support part 3 is provided with a positioning groove 411, and the second end 33 of the support part 3 is inserted into the positioning groove 411. Specifically, the second end 33 of the support part 3 is designed to match the shape of the positioning groove 411, so as to ensure the seamless joint between the second end 33 of the support part 3 and the positioning groove 411. After the second end 33 is completely inserted into the positioning groove 411, the connection of the connecting piece 42 is further matched, so as to provide a stable and reliable support for the armored thermocouple.

[0059] Furthermore, the positioning groove 411 is a convex structure protruding from the surface of the pressing plate 41, and the area of the convex structure is slightly larger than the area of the second end 33 of the support part 3, so as to ensure that when the second end 33 of the support part 3 is fixedly installed into the positioning groove 411, the relative sliding between the two does not occur.

[0060] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the present application, and the equivalent embodiments with equivalent changes can be obtained. The implementation schemes in the above-mentioned embodiments can be further combined or replaced. Any simple modification, equivalent change and modification made to the above-mentioned embodiments according to the technical essence of the present application, which does not depart from the technical solution of the present application, still belongs to the scope of the present application.

Claims

1. A sheathed thermocouple characterized by, The temperature measuring probe (1) is provided with a through installation channel (11) for installing a partial armored thermocouple wire (2). The installation channel (11) has a variable-diameter portion (111) at one end close to the temperature measuring end of the armored thermocouple wire (2), and the variable-diameter portion (111) gradually increases in diameter from inside to outside along the axial direction of the installation channel (11). The variable-diameter portion (111) gradually increases in diameter from inside to outside.

2. The armored thermocouple of claim 1, wherein, The variable-diameter portion (111) extends to the end of the installation channel (11) from inside to outside.

3. The armored thermocouple of claim 1 or 2, wherein, The variable-diameter portion (111) is a tapered chamfer structure provided at one end of the installation channel (11).

4. The armored thermocouple of claim 3, wherein, The temperature measuring end of the armored thermocouple wire (2) extends in the variable-diameter portion (111) of the installation channel (11).

5. The armored thermocouple of claim 4, wherein, The temperature measuring end of the armored thermocouple wire (2) does not extend beyond the end of the variable-diameter portion (111) with the largest diameter and facing outward.

6. The armored thermocouple of claim 5, wherein, The temperature measuring probe (1) is provided with a through installation channel (11) for installing a partial armored thermocouple wire (2).

7. A mounting structure of a sheathed thermocouple for mounting the sheathed thermocouple as claimed in any one of claims 1 to 6 on a mold (5), characterized by The support part (3) is connected with the temperature measuring probe (1) and is used for installing at least part of the armored thermocouple wire (2) extending outside the temperature measuring probe (1). The installation part (4) is used for installing the support part (3) on the mold (5). The support part (3) has a first end (32) and a second end (33) arranged oppositely, the first end (32) is connected with one end of the temperature measuring probe (1) away from the variable-diameter portion (111), and the second end (33) is connected with the installation part (4).

8. The mounting structure for a sheathed thermocouple according to claim 7, characterized by The support part (3) is provided with an installation cavity (31) communicating the first end (32) and the second end (33) and used for installing at least part of the armored thermocouple wire (2) outside the temperature measuring probe (1).

9. The mounting structure for a sheathed thermocouple according to claim 8, characterized by The installation part (4) comprises, 10. The mounting structure for a sheathed thermocouple according to claim 9, wherein The pressing plate (41) abuts against the second end (33) of the support part (3) and is used for pressing the support part (3) in the mold (5); The connecting piece (42) is used for connecting the pressing plate (41) with the mold (5). ​

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