CN218272495U - Resistivity measuring device - Google Patents
Resistivity measuring device Download PDFInfo
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- CN218272495U CN218272495U CN202221538028.7U CN202221538028U CN218272495U CN 218272495 U CN218272495 U CN 218272495U CN 202221538028 U CN202221538028 U CN 202221538028U CN 218272495 U CN218272495 U CN 218272495U
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Abstract
The utility model provides a resistivity survey device, include: the heating furnace is used for accommodating and heating the piece to be measured; a temperature measuring part provided in the heating furnace for detecting a heating temperature in the heating furnace; the resistance detection component is used for being connected with the piece to be detected so as to detect the resistance of the piece to be detected; and the control calculator is connected with the temperature measuring component and the resistance detecting component to obtain a temperature detection result of the temperature measuring component and a resistance detection result of the resistance detecting component, so as to calculate the resistivity of the piece to be detected and make a curve graph of the resistivity of the piece to be detected changing along with the temperature change, and the problem that a device for determining the resistivity change of the conductive fibers when the temperature is increased is lacked in the prior art is solved.
Description
Technical Field
The utility model relates to a detect technical field, particularly, relate to a resistivity survey device.
Background
The conductive fiber can be classified into metal conductive fiber, organic polymer conductive fiber, and conductive component composite conductive fiber according to the difference of conductive components, common conductive fibers include carbon fiber and conductive glass fiber (composite fiber of glass and metal), etc., and a conductive fabric made of the conductive fiber has excellent functions of conductivity, electric heating, shielding, electromagnetic wave absorption, etc.
With the wide application of the conductive fiber in the field of heat resistance, the determination of the resistivity change of the conductive fiber at the time of temperature rise becomes necessary in the industry, however, no related technology for determining the resistivity change of the conductive fiber at the time of temperature rise exists in the industry at present.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a resistivity measuring device to solve the problem of the prior art that lacks a device for measuring the change in resistivity of conductive fibers at the time of temperature rise.
In order to achieve the above object, according to one aspect of the present invention, there is provided a resistivity measuring apparatus including: the heating furnace is used for accommodating and heating the piece to be measured; a temperature measuring part provided in the heating furnace for detecting a heating temperature in the heating furnace; the resistance detection component is used for being connected with the piece to be detected so as to detect the resistance of the piece to be detected; and the control calculator is connected with the temperature measuring part and the resistance detecting part to obtain a temperature detecting result of the temperature measuring part and a resistance detecting result of the resistance detecting part, so as to calculate the resistivity of the piece to be detected and make a curve graph of the resistivity of the piece to be detected changing along with the temperature change.
Further, the resistivity measuring device comprises a high-temperature-resistant conductive clamp, the high-temperature-resistant conductive clamp is arranged in the heating furnace and comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are used for clamping two ends of the piece to be detected respectively, and the first clamping part and the second clamping part are connected with two testing ends of the resistance detecting component respectively.
Further, the resistance detection part is connected with the first clamping part and the second clamping part of the high-temperature-resistant conductive clamp through high-temperature-resistant wires.
Furthermore, the high-temperature-resistant conducting wire and the high-temperature-resistant conducting clip are made of the same material; and/or the high-temperature resistant lead is made of at least one of platinum and platinum alloy; and/or the high-temperature resistant conductive clip is made of at least one of platinum and platinum alloy.
Further, the resistivity measuring device comprises a distance adjusting knob, the distance adjusting knob is connected with the first clamping part or the second clamping part of the high-temperature-resistant conductive clamp to drive the first clamping part or the second clamping part to move, so that the distance between the first clamping part and the second clamping part of the high-temperature-resistant conductive clamp can be adjusted, and the piece to be measured is straightened during testing.
Furthermore, the resistivity measuring device comprises a crucible, the crucible is arranged in the heating furnace, and the piece to be measured is positioned in the crucible.
Furthermore, the inner cavity of the pot of the crucible is a cuboid cavity, the piece to be detected is conductive fiber, and the extending direction of the conductive fiber in the inner cavity of the pot is parallel to the extending direction of the inner cavity of the pot.
Further, the crucible is made of at least one of corundum and quartz.
Further, the heating furnace includes: the furnace body comprises an accommodating cavity and an opening part communicated with the accommodating cavity, the temperature measuring part and the part to be measured are arranged in the accommodating cavity, and the control calculator is connected with the temperature measuring part through the furnace body; the heating element is arranged in the accommodating cavity and used for heating the accommodating cavity, the heating element is connected with the control calculator, and the control calculator is used for controlling the heating temperature of the heating element.
Further, the temperature measuring part is a thermocouple; and/or the resistance detection component is a direct current resistance determinator.
Use the technical scheme of the utility model, the utility model provides a resistivity survey device, include: the heating furnace is used for accommodating and heating the piece to be measured; a temperature measuring part provided in the heating furnace for detecting a heating temperature in the heating furnace; the resistance detection component is used for being connected with the piece to be detected so as to detect the resistance of the piece to be detected; and the control calculator is connected with the temperature measuring part and the resistance detecting part to obtain a temperature detecting result of the temperature measuring part and a resistance detecting result of the resistance detecting part, so as to calculate the resistivity of the piece to be detected and make a curve graph of the resistivity of the piece to be detected changing along with the temperature change. Therefore, the utility model discloses a resistivity survey device simple structure, principle are clear, survey precision is high and easy and simple to handle, but continuous survey conductive fiber is at normal atmospheric temperature and resistivity when heaing up, and then obtain conductive fiber's resistivity-temperature curve, for conductive fiber provides guide and reference in the application of heat-resisting field, solved and lacked among the prior art the problem of carrying out the device surveyed to the resistivity change of conductive fiber when the temperature rises.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:
fig. 1 shows a schematic composition diagram of an embodiment of a resistivity measuring apparatus according to the present invention.
Wherein the figures include the following reference numerals:
1. a control calculator; 2. a connecting wire; 3. a resistance detection part; 4. a high temperature resistant wire; 5. heating furnace; 6. a crucible; 7. a high temperature resistant conductive clip; 8. a piece to be tested; 9. a distance adjusting knob.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, the present invention provides a resistivity measuring apparatus, including: the heating furnace 5 is used for accommodating and heating the piece to be measured 8; a temperature measuring means provided in the heating furnace 5 for detecting a heating temperature in the heating furnace 5; the resistance detection component 3 is used for being connected with the piece to be detected 8 so as to detect the resistance of the piece to be detected 8; and the control calculator 1 is connected with the temperature measuring component and the resistance detecting component 3 to obtain the temperature detection result of the temperature measuring component and the resistance detection result of the resistance detecting component 3, so as to calculate the resistivity of the piece to be detected 8 and make a curve graph of the resistivity of the piece to be detected 8 changing along with the temperature change. Therefore, the utility model discloses a resistivity survey device simple structure, principle are clear, survey precision is high and easy and simple to handle, but continuous survey conductive fiber is at normal atmospheric temperature and resistivity when heaing up, and then obtain conductive fiber's resistivity-temperature curve, for conductive fiber provides guide and reference in the application of heat-resisting field, solved and lacked among the prior art the problem of carrying out the device surveyed to the resistivity change of conductive fiber when the temperature rises.
As shown in fig. 1, the resistivity measuring device includes a high temperature resistant conductive clip 7, the high temperature resistant conductive clip 7 is disposed in the heating furnace 5, the high temperature resistant conductive clip 7 includes a first clamping portion and a second clamping portion respectively used for clamping two ends of the to-be-measured piece 8, and the first clamping portion and the second clamping portion are respectively connected with two testing ends of the resistance detecting component 3.
As shown in fig. 1, the two testing ends of the resistance detection component 3 are connected with the first clamping part and the second clamping part of the high temperature resistant conductive clamp 7 through high temperature resistant wires 4 respectively.
Specifically, the high-temperature resistant lead 4 and the high-temperature resistant conductive clip 7 are made of the same material; and/or the high-temperature resistant lead 4 is made of at least one of platinum and platinum alloy; and/or the high-temperature resistant conductive clip 7 is made of at least one of platinum and platinum alloy.
As shown in fig. 1, the resistivity measuring device includes a distance adjusting knob 9, the distance adjusting knob 9 is connected to the first clamping portion or the second clamping portion of the high temperature resistant conductive clamp 7 to drive the first clamping portion or the second clamping portion to move, so as to adjust the distance between the first clamping portion and the second clamping portion of the high temperature resistant conductive clamp 7, so as to straighten the to-be-measured piece 8 during the test, thereby ensuring the test effect.
As shown in FIG. 1, the resistivity measuring apparatus includes a crucible 6, the crucible 6 is disposed in a heating furnace 5, and a member to be measured 8 is located in the crucible 6; wherein, the high temperature resistant conductive clamp 7 is also positioned in the crucible 6 to prevent the piece to be measured 8 from being polluted or even damaging the heating furnace 5 due to deformation at high temperature.
As shown in fig. 1, the inner cavity of the crucible 6 is a rectangular cavity, the to-be-measured element 8 is a conductive fiber, and the extending direction of the conductive fiber in the inner cavity of the pot is parallel to the extending direction of the inner cavity of the pot.
Optionally, the crucible 6 is made of at least one of corundum and quartz.
The utility model discloses a heating furnace 5 includes: the furnace body comprises an accommodating cavity and an opening part communicated with the accommodating cavity, the temperature measuring part and the to-be-measured part 8 are arranged in the accommodating cavity, the control calculator 1 is connected with the temperature measuring part through the furnace body, and the control calculator 1 is connected with the furnace body through a connecting wire 2; the heating element is arranged in the accommodating cavity and used for heating the accommodating cavity, the heating element is connected with the control calculator 1, and the control calculator 1 is used for controlling the heating temperature of the heating element according to the temperature detection result of the temperature measuring component.
Specifically, the temperature measuring component of the utility model is a thermocouple; and/or, the utility model discloses a resistance detection part 3 is the direct current resistance measurement ware, and the direct current resistance measurement ware is used for surveing high temperature resistant wire 4, high temperature resistant electrically conductive clamp 7 and the resistance sum of piece 8 that awaits measuring.
The working principle of the resistivity measuring device is as follows:
(1) The control calculator 1 is used for controlling the recording of data such as temperature detection results and resistance detection results and the calculation of resistivity.
(2) The resistance detection part 3 is used for measuring the first total resistance of the high-temperature-resistant lead 4, the high-temperature-resistant conductive clamp 7 and the piece to be measured 8; when the first clamping part and the second clamping part of the high-temperature resistant conductive clamp 7 are connected in a short circuit, a second total resistance of the high-temperature resistant lead 4 and the high-temperature resistant conductive clamp 7 can be measured; wherein, the difference between the first total resistance and the second total resistance is the resistance of the device 8 to be tested.
(3) After the resistance of the piece to be measured 8 is obtained, a formula can be calculated according to the resistivity
Or
Obtaining its resistivity, wherein S ρ Is the resistivity of the piece to be measured 8, m is the mass of the piece to be measured 8, R is the resistance of the piece to be measured 8, ρ is the density of the piece to be measured 8, L is the distance between the first clamping part and the second clamping part of the high-temperature-resistant conductive clip 7 after the piece to be measured 8 is straightened, and S is the sectional area of the piece to be measured 8.
(4) The density of the piece 8 to be measured can be obtained by an Archimedes buoyancy method or a pycnometer method; the sectional area of the piece 8 to be measured can be obtained by measuring and calculating the linear density and the density of the piece or by measuring and calculating the diameter of the conductive fiber; in addition, the temperatures corresponding to these processes are all temperature detection results of the temperature measurement component.
The utility model discloses a resistivity survey device's use as follows:
(1) Connecting a control calculator 1 with a furnace body of a heating furnace 5 through a connecting wire 2, and connecting the control calculator 1 with a resistance detection component 3 through the connecting wire 2;
(2) Two ends of the resistance detection component 3 are respectively connected with first ends of the two high-temperature-resistant conducting wires 4, and second ends of the two high-temperature-resistant conducting wires 4 are respectively connected with a first clamping part and a second clamping part of the high-temperature-resistant conducting clamp 7;
(3) Opening the opening part of the furnace body of the heating furnace 5, and respectively clamping the first clamping part and the second clamping part of the high-temperature-resistant conductive clamp 7 at the two ends of the conductive fiber to be measured;
(4) The distance between the first clamping part and the second clamping part of the high-temperature resistant conductive clamp 7 is adjusted through a distance adjusting knob 9 to straighten the conductive fibers;
(5) The conductive fiber to be measured and the high-temperature resistant conductive clamp 7 are integrally placed in a crucible 6 in an accommodating cavity of a furnace body;
(6) After connection and debugging are finished, closing the opening part of the furnace body, setting a temperature control program through the control calculator 1 to control the rise of the temperature in the accommodating cavity of the furnace body, and receiving the temperature detection result of the temperature detection component and the resistance detection result of the resistance detection component 3 through the control calculator 1;
(7) After the test, when waiting that the temperature of the intracavity that holds of furnace body reduces to the room temperature, take out conductive fiber, test appliances such as arrangement connecting wire 2, high temperature resistant wire 4 and high temperature resistant conductive clamp 7.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:
the utility model provides a resistivity survey device, include: the heating furnace 5 is used for accommodating and heating the piece to be measured 8; a temperature measuring means provided in the heating furnace 5 for detecting a heating temperature in the heating furnace 5; the resistance detection component 3 is used for connecting the resistance detection component 3 with the piece to be detected 8 so as to detect the resistance of the piece to be detected 8; and the control calculator 1 is connected with the temperature measuring component and the resistance detecting component 3 to obtain the temperature detection result of the temperature measuring component and the resistance detection result of the resistance detecting component 3, so as to calculate the resistivity of the piece to be detected 8 and make a curve graph of the resistivity of the piece to be detected 8 changing along with the temperature change. Therefore, the utility model discloses a resistivity survey device simple structure, principle are clear, survey precision is high and easy and simple to handle, but continuous survey conductive fiber is at normal atmospheric temperature and resistivity when heaing up, and then obtain conductive fiber's resistivity-temperature curve, for conductive fiber provides guide and reference in the application of heat-resisting field, solved and lacked among the prior art the problem of carrying out the device surveyed to the resistivity change of conductive fiber when the temperature rises.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A resistivity measuring apparatus, comprising:
the heating furnace (5), the said heating furnace (5) is used for holding and heating the piece to be measured (8);
a temperature measuring means provided in the heating furnace (5) for detecting a heating temperature in the heating furnace (5);
the resistance detection component (3) is used for being connected with the piece to be detected (8) so as to detect the resistance of the piece to be detected (8);
the temperature measuring device comprises a control calculator (1), wherein the control calculator (1) is connected with a temperature measuring component and a resistance detecting component (3) to obtain a temperature detecting result of the temperature measuring component and a resistance detecting result of the resistance detecting component (3), so that the resistivity of the piece to be measured (8) is calculated, and a curve graph of the resistivity of the piece to be measured (8) changing along with the temperature change is made.
2. The resistivity measuring device according to claim 1, wherein the resistivity measuring device comprises a high temperature resistant conductive clip (7), the high temperature resistant conductive clip (7) is disposed in the heating furnace (5), the high temperature resistant conductive clip (7) comprises a first clamping portion and a second clamping portion for clamping two ends of the piece to be measured (8), respectively, and the first clamping portion and the second clamping portion are connected to two testing ends of the resistance detecting member (3), respectively.
3. The resistivity measuring apparatus according to claim 2, wherein the resistance detecting member (3) and the first and second sandwiching portions of the high temperature resistant conductive clip (7) are connected by a high temperature resistant wire (4).
4. The resistivity measuring apparatus according to claim 3,
the high-temperature-resistant conducting wire (4) and the high-temperature-resistant conducting clip (7) are made of the same material; and/or
The high-temperature resistant lead (4) is made of at least one of platinum and platinum alloy; and/or
The high-temperature resistant conductive clip (7) is made of at least one of platinum and platinum alloy.
5. The resistivity measuring device according to claim 2, characterized in that the resistivity measuring device comprises a distance adjusting knob (9), and the distance adjusting knob (9) is connected with the first clamping portion or the second clamping portion of the high temperature resistant conductive clamp (7) to drive the first clamping portion or the second clamping portion to move, so as to adjust the distance between the first clamping portion and the second clamping portion of the high temperature resistant conductive clamp (7) to ensure that the piece to be measured (8) is straightened during testing.
6. The resistivity measuring device according to claim 1, wherein the resistivity measuring device comprises a crucible (6), the crucible (6) is disposed in the heating furnace (5), and the member to be measured (8) is located in the crucible (6).
7. The resistivity measuring device according to claim 6, wherein the pot inner cavity of the crucible (6) is a cuboid cavity, the piece to be measured (8) is a conductive fiber, and the extending direction of the conductive fiber in the pot inner cavity is parallel to the extending direction of the pot inner cavity.
8. The resistivity measuring apparatus according to claim 6, wherein the crucible (6) is made of at least one of corundum and quartz.
9. The resistivity measuring apparatus according to claim 1, wherein the heating furnace (5) includes:
the furnace body comprises an accommodating cavity and an opening part communicated with the accommodating cavity, the temperature measuring part and the to-be-measured part (8) are arranged in the accommodating cavity, and the control calculator (1) is connected with the temperature measuring part through the furnace body;
the heating element is arranged in the accommodating cavity and used for heating the accommodating cavity, the heating element is connected with the control calculator (1), and the control calculator (1) is used for controlling the heating temperature of the heating element.
10. The resistivity measuring apparatus according to claim 1,
the temperature measuring component is a thermocouple; and/or
The resistance detection component (3) is a direct current resistance measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221538028.7U CN218272495U (en) | 2022-06-17 | 2022-06-17 | Resistivity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221538028.7U CN218272495U (en) | 2022-06-17 | 2022-06-17 | Resistivity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218272495U true CN218272495U (en) | 2023-01-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221538028.7U Active CN218272495U (en) | 2022-06-17 | 2022-06-17 | Resistivity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218272495U (en) |
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2022
- 2022-06-17 CN CN202221538028.7U patent/CN218272495U/en active Active
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