CN217443066U - Elongation rate measuring device and cable thermal extension test system - Google Patents
Elongation rate measuring device and cable thermal extension test system Download PDFInfo
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- CN217443066U CN217443066U CN202220286312.3U CN202220286312U CN217443066U CN 217443066 U CN217443066 U CN 217443066U CN 202220286312 U CN202220286312 U CN 202220286312U CN 217443066 U CN217443066 U CN 217443066U
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Abstract
The utility model discloses an elongation measuring device and cable thermal extension test system, include: the device comprises an oven, a light source and an image collector, wherein the light source and the image collector are arranged in the oven; the light source and the image collector are arranged on two sides of the cable insulation layer sample; the oven is of a double-layer structure, a light source is arranged on the inner layer of the oven, an image collector is arranged on the outer layer of the oven and connected with an external terminal so as to transmit images of the cable insulation layer samples after being irradiated by the light source. Need not to open oven and manual measurement, improve the hot elongation of cable and measure the accuracy, avoid the risk that testing personnel are scalded simultaneously.
Description
Technical Field
The utility model relates to a hot extension test device technical field especially relates to an elongation measuring device and cable hot extension test system.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
When the power cable material is detected, a cross-linked power cable thermal extension test needs to be carried out, and the cross-linked power cable thermal extension test device is a test device for detecting the cross-linked thermal extension performance of the power cable insulating material in a high-temperature aging test. The test can measure the elongation and permanent deformation of the crosslinked polyethylene at high temperature, and is an important means for testing the crosslinking degree of the cable. At present, a thermal extension test device is generally composed of an oven, a thermal extension test rack and a steel ruler with the scale of 1.0 mm. The test data were read manually. The practical analysis of long-term application finds that the problems are as follows:
(1) because the ruler is thin in scale, the test piece and the ruler are separated by a certain distance, after the test piece is heated and elongated, the mark line of the test piece is shortened and becomes light, and the part of the test piece except the mark line can deviate from the initial position along with the elongation, so that the reading of the elongation displacement has a vision value error.
(2) The transparency of a common oven window is poor, and the oven door needs to be opened for reading after aging for 15 min. In order to read the temperature as accurately as possible, the time for opening the oven door often exceeds the national standard, which causes the test temperature to deviate from the standard value, so that the improvement and the upgrade of the conventional thermal extension test device are necessary.
In summary, when the traditional thermal extension test device measures the elongation rate, the oven door needs to be opened quickly to take out the test piece, and the vernier caliper is used for manual reading of the extension displacement within 30s, so that the artificial error is large, and the risk of scalding of a tester exists; and the test temperature is easy to deviate from the standard temperature by opening the oven door, and the test error is further increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides an elongation measuring device and cable thermal extension test system need not to open oven and artifical the measurement, improves cable thermal extension elongation measurement accuracy, avoids the risk that testing personnel are scalded simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides an elongation measuring device, including: the device comprises an oven, a light source and an image collector, wherein the light source and the image collector are arranged in the oven; the light source and the image collector are arranged on two sides of the cable insulation layer sample; the oven is of a double-layer structure, a light source is arranged on the inner layer of the oven, an image collector is arranged on the outer layer of the oven and connected with an external terminal so as to transmit images of the cable insulation layer samples after being irradiated by the light source.
As an alternative embodiment, a lens is provided on the image collector.
As an alternative embodiment, the lens is arranged on the inner wall of the inner layer of the oven.
As an alternative embodiment, the image collector is connected with an external terminal through a wired communication mode.
As an alternative embodiment, the image collector is connected with an external terminal through a wireless communication mode.
As an alternative embodiment, the cable insulation samples are placed inside the oven.
In an alternative embodiment, a test rack is further arranged in the inner layer of the oven, and the cable insulation layer sample is arranged on the test rack.
In a second aspect, the present invention provides a cable thermal extension test system, including: an elongation measuring device and an image analysis processing device according to a first aspect; the elongation rate measuring device is connected with the image analysis processing device so as to transmit the image of the cable insulation layer sample after being irradiated by the light source to the image analysis processing device.
As an alternative embodiment, the elongation measuring device is connected with the image analysis processing device by a wired communication method or a wireless communication method.
As an alternative embodiment, the image analysis processing device comprises an image acquisition card and a test host; and the image acquisition card receives the image transmitted by the elongation rate measuring device and transmits the image to the test host.
Compared with the prior art, the beneficial effects of the utility model are that:
it is big to traditional cable thermal extension test device to have artificial apparent error, measuring error is big, the tester is scalded the risk scheduling problem, the utility model provides an elongation measuring device and cable thermal extension test system, acquire the image after shining through image collector, and handle image transmission to external terminal, make thermal extension elongation measurement test need not the manual oven of opening and measure, realize automatic measure, reduce artificial apparent error and the measuring error that traditional cable thermal extension test device exists, improve cable thermal extension elongation measurement accuracy, effectively reduce the risk that the staff was scalded.
The utility model provides an elongation measuring device and cable heat extension test system, the measurement step is gone on in sealed oven, need not to open the high temperature oven, improves the tester security, and avoids opening oven chamber door and makes the test error of the skew standard temperature of test temperature.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
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 embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural view of an elongation measuring device provided in embodiment 1 of the present invention;
in the figure, the device comprises a light source 1, a light source 2, a cable insulation layer sample 3, a lens 4, an image collector 5 and an external terminal.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
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 in accordance with the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
Example 1
As shown in fig. 1, the present embodiment provides an elongation measuring apparatus including: the device comprises an oven, a light source 1 and an image collector 4, wherein the light source 1 and the image collector 4 are arranged in the oven; the light source 1 and the image collector 4 are arranged on two sides of the cable insulation layer sample 2; the oven is of a double-layer structure, a light source 1 is arranged on the inner layer of the oven, an image collector 4 is arranged on the outer layer of the oven, and the image collector 4 is connected with an external terminal 5 so as to transmit an image of the cable insulation layer sample 2 after being irradiated by the light source.
As an alternative embodiment, the image collector 4 is a CCD image collector.
As an optional implementation manner, a lens 3 is arranged on the image collector 4;
further, the lens 3 is a large-field lens.
Further, the lens 3 is disposed on the inner wall of the inner layer of the oven.
As an alternative embodiment, the image collector 4 is connected with the external terminal 5 through a wired communication mode.
As an alternative embodiment, the image collector 4 is connected with the external terminal 5 through a wireless communication mode.
As an alternative embodiment, the cable insulation sample 2 is placed inside the oven.
Furthermore, a test stand is arranged in the inner layer of the oven, and the cable insulation layer sample 2 is arranged on the test stand.
In this embodiment, in the inner layer of the oven, the light source emits parallel light to uniformly irradiate on the cable insulation layer sample, and a CCD image collector equipped with a large-field lens acquires the irradiated image and transmits it to an external terminal.
In this embodiment, acquire the image after shining through CCD image collector to transmit the image to external terminal and handle, need not to open the oven and carry out manual measurement, realize automatic measure, improve and measure the accuracy, reduce personnel and scald the risk. The method can be suitable for the thermal extension test of the insulation and sheath materials of all cable materials.
Example 2
The present embodiment provides a cable thermal extension test system, including: the elongation measuring apparatus and the image analysis processing apparatus described in example 1; the elongation rate measuring device is connected with the image analysis processing device through a wired communication mode or a wireless communication mode so as to transmit an image of the cable insulation layer sample after being irradiated by the light source to the image analysis processing device.
In this embodiment, the image analysis processing apparatus includes an image acquisition card and a test host; the image acquisition card receives the image transmitted by the elongation rate measuring device and transmits the image to the test host, so that the test host calculates the thermal elongation of the cable insulation layer sample according to the pre-stored image processing and elongation rate calculation method, and the elongation rate is obtained.
It can be understood that the image processing and the elongation calculation method performed in the testing host may be performed by using the existing method, which is not an innovative point of this embodiment and is not described herein again.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. An elongation measuring device, comprising: the device comprises an oven, a light source and an image collector, wherein the light source and the image collector are arranged in the oven; the light source and the image collector are arranged on two sides of the cable insulation layer sample; the oven is of a double-layer structure, a light source is arranged on the inner layer of the oven, an image collector is arranged on the outer layer of the oven and connected with an external terminal so as to transmit images of the cable insulation layer samples after being irradiated by the light source.
2. The elongation measuring device of claim 1, wherein the image collector is provided with a lens.
3. An elongation measuring device as claimed in claim 2, wherein said lens is provided on an inner wall of an inner layer of the oven.
4. The elongation measuring apparatus of claim 1, wherein the image collector is connected to an external terminal through a wired communication manner.
5. The elongation measuring apparatus of claim 1, wherein the image collector is connected to an external terminal through wireless communication.
6. An elongation measuring device as claimed in claim 1, wherein said cable insulation sample is disposed in an oven interior.
7. An elongation measuring device as claimed in claim 6, wherein a test stand is further provided in the inner layer of the oven, and the cable insulation test sample is provided on the test stand.
8. A cable thermal extension test system, comprising: the elongation measuring device and the image analysis processing device according to any one of claims 1 to 7; the elongation rate measuring device is connected with the image analysis processing device so as to transmit an image of the cable insulation layer sample after being irradiated by the light source to the image analysis processing device.
9. The cable thermal extension test system of claim 8, wherein the elongation measuring device is connected to the image analysis processing device through a wired communication method or a wireless communication method.
10. The cable thermal extension test system of claim 8, wherein the image analysis processing device comprises an image acquisition card and a test host; and the image acquisition card receives the image transmitted by the elongation rate measuring device and transmits the image to the test host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220286312.3U CN217443066U (en) | 2022-02-11 | 2022-02-11 | Elongation rate measuring device and cable thermal extension test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220286312.3U CN217443066U (en) | 2022-02-11 | 2022-02-11 | Elongation rate measuring device and cable thermal extension test system |
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| Publication Number | Publication Date |
|---|---|
| CN217443066U true CN217443066U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220286312.3U Active CN217443066U (en) | 2022-02-11 | 2022-02-11 | Elongation rate measuring device and cable thermal extension test system |
Country Status (1)
| Country | Link |
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| CN (1) | CN217443066U (en) |
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2022
- 2022-02-11 CN CN202220286312.3U patent/CN217443066U/en active Active
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