CN215677913U - Long-term aging test device - Google Patents
Long-term aging test device Download PDFInfo
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- CN215677913U CN215677913U CN202121506477.9U CN202121506477U CN215677913U CN 215677913 U CN215677913 U CN 215677913U CN 202121506477 U CN202121506477 U CN 202121506477U CN 215677913 U CN215677913 U CN 215677913U
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Abstract
The utility model relates to the technical field of aging test devices, in particular to a long-term aging test device which comprises a heat-insulating container with adjustable internal temperature and a tank body accommodated in the heat-insulating container, wherein the tank body is made of stainless steel, a closed cavity is formed in the tank body in a hollow mode, an opening which can be opened or closed and is used for taking and placing a sample is arranged in the cavity, a liquid injection pipe and an air outlet pipe which are communicated with the cavity are arranged on the top surface of the tank body, a liquid injection valve is arranged on the liquid injection pipe, the liquid injection valve is at least 0.5m higher than the top surface of the tank body, and an air outlet valve is arranged on the air outlet pipe. The stainless steel tank body can prevent the test result from being influenced by the corrosion of the test solution, and can be repeatedly used; the heat-insulating container can control the temperature of the test solution in the cavity and keep the temperature constant for a long time, so as to realize the temperature condition required by the test; the liquid injection valve is at least 0.5m higher than the top surface of the tank body, so that the water pressure condition of at least 0.5m required by the test can be met, and the device can meet the long-term aging test requirements of cables under the conditions of high temperature, alkalinity and water pressure.
Description
Technical Field
The utility model relates to the technical field of aging test devices, in particular to a long-term aging test device.
Background
For cables with metal foil bonded composite material outer layer structures, such as structural cables with aluminum-plastic longitudinal wraps, copper foil longitudinal wraps and the like, in order to check the bonding firmness and long-term aging performance between the metal foil and the composite material, the IEC TR 61901: 2016 Standard requires a 3000h long term aging test with 1% NaCl, 1% Na at pH 8.5. + -. 0.5 for the sample2SO4Aging in the solution at 80 + -3 deg.C under water pressure of at least 0.5m for 3000 h. The test device is not specified or recommended in the standard.
At present, no special test device for the test exists in the market, and theoretically, the required test conditions can be realized by means of a water permeability test device for a power cable and the like. However, materials of all parts of the existing device are not designed in a targeted manner aiming at the alkaline solution used in the test, the test equipment can be corroded in the long-term aging test process, corrosion products are dissolved in the solution and can possibly influence the test result, and the test equipment cannot be used continuously after being corroded. In addition, for being applicable to different diameter cable samples, the existing device is sealed to adopt composite structures such as pyrocondensation pipe, rubber pad, apron mostly, and the sealed effect in the long-term aging test in-process under the unable assurance water pressure condition of this structure. The existing device is usually used in a free air environment, the temperature of the test solution is kept through an external heating circulating device, the scheme is obviously influenced by the ambient temperature, and the temperature in the whole long-term aging test process can not be guaranteed to meet the requirement. Therefore, the existing equipment can not meet the requirements of long-term aging tests of cables under the conditions of high temperature, alkalinity and water pressure, and a special device needs to be designed according to the test requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a long-term aging test device capable of meeting the requirements of a long-term aging test of a cable, so as to overcome the defects in the prior art.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a long-term aging test device, includes that inside temperature adjustable heat preservation container and holding are in the inside jar body of heat preservation container, and jar body adopts the stainless steel to make, and jar internal portion cavity forms inclosed cavity, and the cavity is equipped with the opening that can open or the confined is used for getting and puts the sample, is equipped with notes liquid pipe and the outlet duct that is linked together with the cavity on the top surface of jar body, is equipped with on annotating the liquid pipe and annotates the liquid valve, annotates the top surface that the liquid valve is higher than jar body and is equipped with the air outlet valve by 0.5m at least on the outlet duct.
Preferably, the tank body is provided with a temperature measuring member for measuring the temperature inside the cavity.
Preferably, the temperature measuring part is a thermometer, the thermometer penetrates through the tank body and extends into the cavity, and the thermometer is hermetically assembled with the tank body.
Preferably, the insulated container is a high and low temperature cabinet.
Preferably, the bottom of the cavity is provided with an openable or closed liquid outlet.
Preferably, the opening is connected to a sealing flange closing the opening.
Preferably, the cavity is formed with two openings extending therethrough in the horizontal direction.
Preferably, a sample holder for holding a sample is provided in the cavity.
Preferably, a tank body support used for supporting the tank body is arranged in the heat preservation container.
Compared with the prior art, the utility model has the remarkable progress that:
the tank body is made of stainless steel, so that the influence on the test result caused by corrosion of the tank body by alkaline test solution in the long-term aging test process can be prevented, and the tank body can be repeatedly used; the temperature of the test solution in the cavity can be controlled and maintained at constant temperature for a long time by controlling the environmental temperature of the tank body and the temperature condition in the tank body through the heat-insulating container, so that the temperature condition required by a long-term aging test is realized; the liquid level higher than the top surface of the tank body in the liquid injection pipe can form water pressure, the long-term maintenance of the water pressure can be realized after the water injection is finished and the liquid injection valve and the gas outlet valve are closed, the requirement of at least 0.5m water pressure condition required by a long-term aging test is met when the liquid injection valve is at least 0.5m higher than the top surface of the tank body, and the at least 0.5m water pressure condition can be realized below the liquid injection valve. Therefore, the long-term aging test device can meet the requirements of long-term aging tests of cables under the conditions of high temperature, alkalinity and water pressure.
Drawings
Fig. 1 is a schematic operation diagram of a long-term aging test apparatus according to an embodiment of the present invention.
Wherein the reference numerals are as follows:
1 Heat-insulating container
2 tank body
20 cavity
21 opening
22 liquid outlet
3 liquid filling pipe
31 liquid filling valve
4 air outlet pipe
41 air outlet valve
5 temperature measuring element
6 sealing flange
7 sample support
8 tank support
9 samples
10 test solution
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
One embodiment of the long term aging test apparatus of the present invention is shown in FIG. 1. The long-term aging test apparatus of this example was used to achieve 1% NaCl, 1% Na at pH 8.5. + -. 0.5 for the test samples2SO4In the solution, the test conditions of long-term aging (such as aging for 3000 hours) are carried out at the temperature of 80 +/-3 ℃ and under the condition of at least 0.5m of water pressure, so that the long-term aging test requirements of the cable are met, and particularly the long-term aging test of the cable with the metal foil bonded composite material outer layer structure is met.
The long-term aging test device of the embodiment comprises a heat-insulating container 1 and a tank body 2. The inner temperature of the thermal insulation container 1 is adjustable, and preferably, the thermal insulation container 1 may be a high and low temperature cabinet. The tank body 2 is accommodated in the heat-insulating container 1, so that the temperature of the environment where the tank body 2 is located can be controlled through the heat-insulating container 1, the temperature condition in the tank body 2 is further controlled, and the temperature is kept constant in the long-term aging test process.
The tank body 2 is hollow to form a closed cavity 20, the cavity 20 is provided with an opening 21 which can be opened or closed, the opening 21 is used for taking and placing the sample 9, and when the opening 21 is opened, the sample 9 to be tested can be placed into the cavity 20 or the tested sample 9 can be taken out of the cavity 20; the opening 21 is closed when the test is performed. Sample 9 is a test piece, such as a cable test piece, for long term aging testing. The size of the tank 2 and the cavity 20 can be determined according to the size of the sample 9 used in the actual test, the minimum diameter of the cavity 20 should be larger than the diameter of the sample 9, and the length of the cavity 20 should be larger than the length of the sample 9.
The top surface of the tank body 2 is provided with a liquid injection pipe 3 and an air outlet pipe 4, and the liquid injection pipe 3 and the air outlet pipe 4 are both communicated with the cavity 20. The injection tube 3 is used for injecting a test solution 10 (such as 1% NaCl with pH value of 8.5 +/-0.5 and 1% Na) into the cavity 202SO4Solution) is arranged on the liquid injection pipe 3, the on-off of the liquid injection pipe 3 is controlled by opening and closing the liquid injection valve 31 so as to control the amount of the test solution 10 injected into the cavity 20, and the liquid injection valve 31 also plays a role in sealing when closed. The air outlet pipe 4 is used for synchronously exhausting air in the cavity 20 when the liquid injection pipe 3 and the liquid injection valve 31 inject the test solution 10 into the cavity 20, and the air outlet pipeThe air outlet valve 41 is arranged on the air outlet pipe 4, the on-off of the air outlet pipe 4 is controlled by opening and closing the air outlet valve 41, and the air outlet valve 41 also plays a role in sealing when closed. The liquid injection valve 31 is at least 0.5m higher than the top surface of the can body 2, namely the liquid injection valve 31 is positioned above the top surface of the can body 2, and the vertical distance between the liquid injection valve 31 and the top surface of the can body 2 is not less than 0.5m, therefore, when the cavity 20 of the can body 2 is filled with the test solution 10 and the liquid level of the test solution 10 rises to the liquid injection pipe 3, the liquid level higher than the top surface of the can body 2 in the liquid injection pipe 3 can form water pressure, in addition, after the water injection is finished and the liquid injection valve 31 and the gas outlet valve 41 are closed, the long-term maintenance of the water pressure can be realized, the requirement of at least 0.5m water pressure condition required by the long-term aging test is met when the liquid injection valve 31 is at least 0.5m higher than the top surface of the can body 2, and the at least 0.5m water pressure condition can be realized below the liquid injection valve 31.
The temperature of the test solution 10 in the cavity 20 can be controlled and maintained at constant temperature for a long time by controlling the environmental temperature of the tank body 2 and the temperature conditions inside the tank body 2 through the heat-insulating container 1, so that the temperature conditions required by a long-term aging test are realized.
The tank body 2 is made of stainless steel, so that the tank body 2 can be prevented from being corroded by the alkaline test solution 10 to influence the test result in the long-term aging test process, and the tank body can be repeatedly used.
Therefore, the long-term aging test device of the embodiment can meet the requirements of long-term aging tests of cables under the conditions of high temperature, alkalinity and water pressure.
In this embodiment, preferably, in this embodiment, the tank body 2 is provided with the temperature measuring part 5 for measuring the temperature inside the cavity 20, the temperature of the test solution 10 in the cavity 20 is measured in real time by the temperature measuring part 5, and the temperature is regulated and controlled by the heat-insulating container 1 according to the measurement result, so that the accurate control of the temperature of the test solution 10 in the cavity 20 of the tank body 2 can be realized, and the test solution 10 is ensured to keep constant in temperature in the long-term aging test process.
Preferably, the temperature measuring part 5 can be a thermometer, the thermometer penetrates through the tank body 2 and extends into the cavity 20, and the thermometer is hermetically assembled with the tank body 2 so as to ensure the tightness of the cavity 20 of the tank body 2 when the test is carried out.
In this embodiment, it is preferable that the bottom of the cavity 20 of the tank 2 is provided with an openable or closable liquid outlet 22. When the test is carried out, the liquid outlet 22 is closed; after the test is finished, the liquid outlet 22 can be opened, and the test solution 10 in the cavity 20 of the tank 2 can be discharged from the liquid outlet 22.
In this embodiment, preferably, the opening 21 of the cavity 20 of the tank body 2 is connected with the sealing flange 6 for closing the opening 21, and the sealing flange 6 is used for closing the opening 21, so that the advantages of good sealing performance and convenient assembly are achieved.
In this embodiment, in order to facilitate taking and placing the sample 9, preferably, the cavity 20 of the tank 2 is formed with two openings 21 penetrating in the horizontal direction, that is, one opening 21 is provided at each of the left and right ends of the tank 2, and the two openings 21 can facilitate taking and placing the strip-shaped sample 9 in the cavity 20. Both openings 21 are closed by sealing flanges 6.
In this embodiment, it is preferable that the sample holder 7 for holding the sample 9 is disposed in the cavity 20 of the tank 2. Preferably, two sample supports 7 are provided, and two sample supports 7 are provided on the bottom wall of the cavity 20 at intervals along the horizontal direction, and the two ends of the sample 9 are respectively supported by the two sample supports 7, so that the stability, heating and heat dissipation of the sample 9 can be ensured.
In this embodiment, preferably, a tank support 8 for supporting the tank 2 is provided in the thermal insulation container 1. Preferably, jar body support 8 is equipped with two, and two jar body supports 8 are located insulation container 1 along the horizontal direction interval, support the both ends of jar body 2 respectively through two jar body supports 8, can guarantee jar body 2 steady and be heated, the heat dissipation is even.
When the long-term aging test device of the embodiment is used, a sample 9 can be manufactured according to standard requirements, the opening 21 of the cavity 20 of the tank body 2 is opened, the sample 9 is placed on the sample support 7 in the cavity 20, then the opening 21 is closed by the sealing flange 6, the liquid outlet 22 is closed, and the temperature measuring part 5 (thermometer) is inserted; then the liquid injection valve 31 and the air outlet valve 41 are opened, the prepared test solution 10 with the standard requirement is injected into the cavity 20 through the liquid injection pipe 3, the cavity 20 is filled with the test solution 10, the air in the cavity 20 is completely exhausted, the air outlet valve 41 is closed, the test solution 10 is continuously injected until the liquid level in the liquid injection pipe 3 meets the water pressure condition required by the test, and the liquid injection valve 31 is closed; and adjusting the internal temperature of the heat-insulating container 1, observing the temperature of the test solution 10 in the cavity 20 measured by the temperature measuring part 5 at the same time, starting the test by timing until the reading of the temperature measuring part 5 is stabilized in the temperature range required by the test, opening the liquid injection valve 31 and the liquid outlet 22 until the time required by the test is reached, and discharging the test solution 10 in the cavity 20 of the tank body 2 from the liquid outlet 22 to finish a long-term aging test. In the test process, the opening 21 and the liquid outlet 22 of the cavity 20 of the tank body 2 are sealed, the liquid injection pipe 3 is sealed by the closed liquid injection valve 31, the gas outlet pipe 4 is sealed by the closed gas outlet valve 41, and the temperature measuring part 5 and the tank body 2 are also in sealed assembly, so that the problems of leakage and evaporation of the test solution 10 in the cavity 20 cannot be caused in the long-term aging test process, and the test solution 10 does not need to be supplemented or an additional automatic test solution 10 supplementing device does not need to be arranged in the test process.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. The long-term aging test device is characterized by comprising a heat-insulating container (1) with adjustable internal temperature and a tank body (2) accommodated in the heat-insulating container (1), wherein the tank body (2) is made of stainless steel, a closed cavity (20) is formed in the tank body (2) in a hollow mode, the cavity (20) is provided with an opening (21) which can be opened or closed and is used for taking and placing a sample (9), the top surface of the tank body (2) is provided with a liquid injection pipe (3) and an air outlet pipe (4) which are communicated with the cavity (20), the liquid injection pipe (3) is provided with a liquid injection valve (31), the liquid injection valve (31) is at least 0.5m higher than the top surface of the tank body (2), and the air outlet pipe (4) is provided with an air outlet valve (41).
2. Long-term ageing test device according to claim 1, characterised in that the tank (2) is provided with a temperature measuring member (5) for measuring the temperature inside the cavity (20).
3. Long term aging test device according to claim 2, characterized in that the temperature measuring member (5) is a thermometer which penetrates the can (2) and protrudes into the cavity (20), the thermometer being sealingly fitted with the can (2).
4. Long term aging test device according to claim 1, characterized in that the thermal container (1) is a high and low temperature cabinet.
5. Long term aging test device according to claim 1, characterized in that the bottom of the cavity (20) is provided with an openable or closed liquid outlet (22).
6. Long-term aging test device according to claim 1, characterized in that the opening (21) is connected with a sealing flange (6) closing the opening (21).
7. Long-term aging test device according to claim 1, characterized in that the cavity (20) is formed with two of the openings (21) through in a horizontal direction.
8. Long term aging test device according to claim 1, characterized in that a sample holder (7) for holding the sample (9) is provided in the cavity (20).
9. The long-term aging test device according to claim 1, characterized in that a tank support (8) for supporting the tank (2) is provided in the heat-insulating container (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121506477.9U CN215677913U (en) | 2021-07-02 | 2021-07-02 | Long-term aging test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121506477.9U CN215677913U (en) | 2021-07-02 | 2021-07-02 | Long-term aging test device |
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| Publication Number | Publication Date |
|---|---|
| CN215677913U true CN215677913U (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121506477.9U Active CN215677913U (en) | 2021-07-02 | 2021-07-02 | Long-term aging test device |
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| CN (1) | CN215677913U (en) |
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2021
- 2021-07-02 CN CN202121506477.9U patent/CN215677913U/en active Active
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