Simulation environment test tool for high-voltage cable accessory

Abstract

The utility model discloses an environment simulation test tool for high-voltage cable accessories, which comprises a test bin, a test cavity is arranged in the test bin, and an inflation valve and an extraction valve are respectively arranged at the top and the bottom of the test bin. The function of configuring the inflation valve and the extraction valve is that external gas with corresponding parameters enters the test cavity by opening or closing the corresponding valves, different natural environments can be simulated in the test cavity, and one of two test cables to be tested is arranged outside the test bin by arranging the joint body, so that different natural environments can be simulated in the test cavity. And the other one is arranged in the test bin, so that the construction volume of the test bin can be reduced, and the test tool equipment is miniaturized.

Description

TECHNICAL FIELD

[0001] The utility model relates to high voltage cable accessory test technical field, especially relate to a high voltage cable test frock. BACKGROUND

[0002] High voltage cable accessory has great relevance with surrounding environment in practical application, for example, it is very different from normal environment in high altitude environment, and the high altitude environment has thin air, low temperature, large temperature change, low humidity and the like.

[0003] High voltage cable accessory must pass type test before formal use, but the current type test content has electrical performance test (partial discharge test, power frequency withstand voltage test, impulse voltage test and the like), constant voltage load cycle test, dynamic thermal test, damp / salt fog test and the like, these tests are all tested under normal environment (1000 meters of altitude), but the industry consensus determines that high altitude has influence on the above each test, and there is no suitable simulation frock at present, in order to obtain high altitude environment, only can go to high altitude area to do test in situ, however, there is no corresponding test room in high altitude area. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of test frock of simulated environment for high voltage cable accessory, can realize the simulation test to cable in various different environments, simultaneously can make test equipment miniaturization, it is convenient to carry and use.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model has:

[0006] A kind of test frock of simulated environment for high voltage cable accessory, comprising:

[0007] Test bin, the test bin has test cavity inside, inflating valve and air extraction valve are respectively arranged at the top and bottom of the test bin, and installation hole is opened in the top of test bin;

[0008] Joint body in cylinder, the joint body is detachably installed at installation hole position, and the two ends of the joint body are used to install test cable detachable with joint body, and test cable installed below joint body can be located in test cavity.

[0009] Compared with the prior art, the test tool of the simulated environment for the high-voltage cable accessory of the application comprises a test bin, the test bin has a test cavity inside, the test tool is configured by setting an inflation valve and an air extraction valve on the top and the bottom of the test bin respectively, the inflation valve and the air extraction valve are configured to enable the external gas with corresponding parameters to enter the test cavity by opening or closing the corresponding valve, thereby simulating different natural environments in the test cavity, and the test tool is configured by setting a joint body, so that one of the two test cables to be tested is placed outside the test bin and the other is placed inside the test bin, thereby reducing the construction volume of the test bin and miniaturizing the test tool equipment.

[0010] Further, the joint body comprises:

[0011] a cylindrical body;

[0012] a circular base, the body is embedded in the inner periphery of the base to be combined and installed, and the base is detachably installed on the mounting hole.

[0013] Further, the outer periphery of the base extends outward to form a ring along, and the end of the ring along extends downward to form a lower ring wall;

[0014] a groove in the form of a ring is formed at the position of the mounting hole, the base is assembled with the test bin by embedding the groove through the lower ring wall, and sealing glue is filled in the gap between the lower ring wall and the groove.

[0015] Further, a plurality of sealing grooves are formed on the test bin at the periphery of the mounting hole;

[0016] After the base is installed in the mounting hole, the base cooperates with the sealing grooves to form a plurality of sealing channels capable of installing sealing rings.

[0017] Further, the test bin is a cylindrical test bin.

[0018] Further, the test tool further comprises:

[0019] a heating device, the heating device is detachably wrapped around the outer periphery of the test bin.

[0020] Further, the test tool further comprises:

[0021] a cooling device, the cooling device is detachably wrapped around the outer periphery of the test bin.

[0022] Further, the top of the test bin is provided with a densimeter and a temperature and humidity meter;

[0023] The outer periphery of the test bin is provided with an observation hole.

[0024] Further, the test bin comprises:

[0025] a cylindrical barrel, a viewing hole being mounted on the barrel;

[0026] an upper end cover being arranged on the top of the barrel, an inflation valve, a densimeter and a temperature and humidity meter being mounted on the upper end cover;

[0027] a lower bottom cover being arranged on the bottom of the barrel, an air extraction valve being mounted on the lower bottom cover.

[0028] For better understanding and implementation, the following will be described in detail in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a whole structure schematic view of a test tool for simulating environment of high-voltage cable accessories in the embodiment;

[0030] Figure 2 is a schematic view of a local part of a connection position between a joint body and an upper end cover in the test tool for simulating environment of high-voltage cable accessories in the embodiment;

[0031] Figure 3 is a structure schematic view of a joint body connecting a test cable in the test tool for simulating environment of high-voltage cable accessories in the embodiment;

[0032] Figure 4 is a schematic view of a test bin in the test tool for simulating environment of high-voltage cable accessories in the embodiment. DETAILED DESCRIPTION

[0033] For better illustrating the present application, the following will be further described in detail with reference to the drawings.

[0034] It should be clear that the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work, fall within the scope of protection of the present application.

[0035] The terms used in the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0036] The following description refers to the accompanying drawings. Unless otherwise indicated, same or similar elements in different drawings are denoted with the same or similar reference numerals. The implementation described in the following exemplary embodiments does not represent all implementations consistent with the present application. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first", "second", "third", etc. are used merely as labels, and do not necessarily indicate a particular order or sequence, nor are they intended to indicate or imply relative importance of an associated described object. The specific meaning of the above terms in the present application can be understood according to the specific circumstances by those of ordinary skill in the art.

[0037] In addition, in the description of the present application, "a plurality of" means two or more, unless otherwise specified. The association relationship of the associated objects is described, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0038] In the prior art, piezoelectric cable accessories must pass type test before formal use, but the current type test content includes electrical performance test (partial discharge test, power frequency withstand voltage test, impulse voltage test, etc.), constant voltage load cycle test, dynamic thermal test, humidity / salt spray test, etc. These tests are all tested under normal environment (1000 meters above sea level), but the industry consensus recognizes that high altitude has an impact on the above tests. At present, there is no suitable simulation tool. In order to obtain a high-altitude environment, only field tests can be done in high-altitude areas. However, there is no corresponding test room in high-altitude areas.

[0039] Based on the above, it can be understood that the test is carried out under normal environment (1000 meters above sea level), and it is difficult to determine whether the cable after the test can be applied in different natural environments.

[0040] Therefore, the technical problem actually solved by the present application is how to simulate different natural environments for cable testing under normal environment.

[0041] As a preferred embodiment of the present application, Figure 1 A schematic diagram of the overall structure of a simulation environment test tool for high-voltage cable accessories is shown in FIG. Figure 1 A simulation environment test tool for high-voltage cable accessories is shown in FIG.

[0042] The test chamber 1 has a test cavity 100 inside. An inflation valve 2 and an exhaust valve 3 are arranged at the top and bottom of the test chamber 1 respectively, and an installation hole 10 is formed in the top of the test chamber 1.

[0043] A cylindrical joint body 4 is detachably mounted at the mounting hole 10, and two ends of the joint body 4 are used for mounting the test cables 200 which are detachable from the joint body 4, and the test cables 200 mounted below the joint body 4 can be located in the test cavity 100.

[0044] The inflation valve 2 is used to control the external gas into the test cavity 100 by opening or closing the valve of the inflation valve 2; the exhaust valve 3 is used to control the gas in the test cavity 100 to be exhausted from the test cavity 100 by opening or closing the valve of the exhaust valve 3;

[0045] When the user uses it, by presetting the parameters of the external gas and facilitating the inflation valve 2 to input the external gas into the test cavity 100, and cooperating with the exhaust valve 3 to adjust the external gas in the test cavity 100, different natural environments can be simulated in the test cavity.

[0046] The two ends of the joint body 4 are used for mounting the test cables 200, that is, one test cable 200 is placed inside the test cavity 100, and the other test cable 200 is placed outside the test chamber 1, and the other test cable 200 can be used to connect other test equipment for electrical tests such as partial discharge test, power frequency withstand voltage test, impulse voltage test, etc., which can realize the richness of test items.

[0047] And the test cable 200 placed in the test cavity 100 is applied to environmental test.

[0048] For the application of the joint body 4, only a single test cable 200 is placed in the test cavity 100, thereby the setting volume of the test chamber 1 can be reduced, so that the overall test tool is miniaturized without affecting the test content and effect of the test tool.

[0049] The test tool for simulating environment of high-voltage cable accessories in the embodiment comprises a test chamber 1, and the test chamber 1 has a test cavity 100 inside. The inflation valve 2 and the exhaust valve 3 are arranged at the top and the bottom of the test chamber 1 respectively, and the functions of the inflation valve 2 and the exhaust valve 3 are to make the external gas with corresponding parameters enter the test cavity 100 by opening or closing the corresponding valve, thereby realizing that different natural environments can be simulated in the test cavity 100. The two test cables 200 to be tested are placed outside the test chamber 1 and inside the test chamber 1 respectively by arranging the joint body 4, thereby the setting volume of the test chamber 1 can be reduced, and the test tool device is miniaturized.

[0050] For the specific application example structure of the joint body 4, as shown in Figure 2 and Figure 3 The joint body 4 comprises:

[0051] The main body 41 is cylindrical; the base 42 is annular. The main body 41 is embedded in the inner circumference of the base 42 for assembly, and the base 42 is detachably mounted on the mounting hole.

[0052] The base 42 extends outward to form an annular edge 421, and extends downward to form a lower annular wall 422 at the end of the annular edge 421. A groove 101, which is annular and located at the top of the test chamber 1, is provided at the mounting hole 10. The base 42 is assembled with the test chamber 100 by embedding the lower annular wall 422 into the groove 101. The gap between the lower annular wall and the groove 101 is filled with sealant to prevent gas leakage from the test chamber 100 and thus prevent it from affecting the environmental parameters inside the test chamber.

[0053] In addition, to further improve the sealing effect, such as Figure 3 As shown, the connector body 4 includes:

[0054] Multiple sealing grooves are formed on the upper end cover 12;

[0055] After the base 42 is installed on the upper cover 12, the base 42 and the sealing groove cooperate to form multiple sealing channels that can be used to install sealing rings.

[0056] Preferably, the sealing groove is provided in three parts, which are respectively aligned with the circumferential edge 421 of the base 42, the lower side wall of the base 42, and the bottom of the base 42. The sealing channels formed are divided into a first sealing channel 102a, a second sealing channel 102b, and a third sealing channel 102c, which are sealed by installing sealing rings.

[0057] Both the external air of the test chamber 1 and the internal gas inside the test cavity 100 of the test chamber 1 can be blocked by the first sealing channel 102a, the second sealing channel 102b and the third sealing channel 102c to prevent air circulation.

[0058] As an example of this embodiment, a test fixture for simulating various natural environments for high-voltage cable accessories is shown below:

[0059] If the extraction valve 3 is connected to a vacuum pump, it can partially or completely extract the contents of the test chamber 1, thereby simulating the low-pressure gas environment or vacuum environment of high-altitude areas in the test chamber 1.

[0060] If the inflation valve 2 at the top of the test chamber 1 can be connected to various high-pressure gases, then the test chamber 100 inside the test chamber 1 can be simulated with a high-pressure gas environment by filling in various high-pressure gases.

[0061] If the inflation valve 2 at the top of the test chamber 1 is connected to high-temperature gas, then various high-pressure gases can be injected to simulate a high-temperature environment for the test chamber 100 inside the test chamber 1.

[0062] If the gas filling valve 2 at the top of the test chamber 1 is connected to low-temperature gas, the test cavity 100 in the test chamber 1 can be simulated to a low-temperature environment by filling various high-pressure gas.

[0063] If the gas filling valve 2 at the top of the test chamber 1 is connected to dry gas, the test cavity 100 in the test chamber 1 can be simulated to a low-humidity environment by filling various high-pressure gas.

[0064] If the gas filling valve 2 at the top of the test chamber 1 is connected to humid gas, the test cavity 100 in the test chamber 1 can be simulated to a high-humidity environment in rainy days by filling various high-pressure gas.

[0065] If the gas filling valve 2 at the top of the test chamber 1 is connected to concentrated brine evaporation gas, the test cavity 100 in the test chamber 1 can be simulated to a high-salt fog environment by filling various high-pressure gas.

[0066] The parameters of the external gas include density, temperature, humidity, and gas type.

[0067] In the above environment, the natural environment can be simulated by superimposing the parameters of the external gas.

[0068] In this embodiment, the test chamber 1 is a cylindrical test chamber 1.

[0069] In addition, for the simulation of natural environment, for the simulation of high-temperature environment, the test tool further comprises:

[0070] A heating device (not shown) is detachably wrapped around the outer periphery of the test chamber 1, and the test cavity 100 of the test chamber 1 can obtain a high-temperature environment by heating the test chamber 1 by the heating device (not shown). The heating device (not shown) can be a radiant heater, etc.

[0071] Similarly, for the simulation of low-temperature environment, the test tool further comprises:

[0072] A cooling device (not shown) is detachably wrapped around the outer periphery of the test chamber 1, and the test cavity 100 of the test chamber 1 can obtain a low-temperature environment by heating the test chamber 1 by the cooling device (not shown). The cooling device (not shown) can be a water cooler, etc.

[0073] In this embodiment, in combination with Figure 4 As shown in the figure, the top of the test chamber 1 is provided with a densimeter 5 and a temperature and humidity meter 6, and the outer periphery of the test chamber 1 is provided with an observation hole.

[0074] The density meter 5 and the thermometer and hygrometer 6 are used to monitor various parameters of the gas in the test chamber 100. The observation hole is used to facilitate the user to observe the environmental conditions in the test chamber 100 and the operating status of the cable.

[0075] In this embodiment, as Figure 4 As shown, for the preferred combination structure of the test chamber 1, the test chamber 1 includes: a cylindrical body 11, on which an observation hole 8 is installed; an upper end cover 12 is provided at the top of the cylindrical body 11, on which an inflation valve 2, a density meter 5, and a thermometer and hygrometer 6 are installed; and a lower bottom cover 13 is provided at the bottom of the cylindrical body 11, on which an air extraction valve 3 is installed.

[0076] In addition, a bracket 7 can be connected to the bottom cover 13 to raise the entire test chamber 1 for user convenience.

[0077] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A test tool for simulating the environment of a high voltage cable accessory, characterized in that, The test device comprises: a test chamber having a test cavity inside, an inflation valve and a suction valve arranged on the top and bottom of the test chamber respectively, and an installation hole formed on the top of the test chamber; a cylindrical connector body which is detachably installed at the installation hole, and two ends of the connector body are used to install test cables which are detachably connected to the connector body and can make the test cables installed below the connector body located in the test cavity.

2. The test fixture of claim 1, wherein The connector body comprises: a cylindrical body; a circular base, the body is combined and installed by embedding into the inner periphery of the base, and the base is detachably installed on the installation hole.

3. The test device according to claim 2, wherein: the outer periphery of the base extends outward to form a ring flange, and the end of the ring flange extends downward to form a lower ring wall; a circular groove is formed on the top of the test chamber at the installation hole, the base is assembled with the test chamber by embedding the lower ring wall into the groove, and sealant is filled in the gap between the lower ring wall and the groove.

4. The test device according to claim 3, wherein: a plurality of sealing grooves are formed on the test chamber around the installation hole; after the base is installed in the installation hole, the base cooperates with the sealing grooves to form a plurality of sealing channels capable of installing sealing rings.

5. The test device according to claim 1, wherein: the test chamber is a cylindrical test chamber.

6. The test fixture of claim 1, wherein The test device further comprises: a heating device which is detachably wrapped around the outer periphery of the test chamber.

7. The test fixture of claim 1 wherein, The test device further comprises: a cooling device which is detachably wrapped around the outer periphery of the test chamber.

8. The test device according to claim 1, wherein: a densimeter and a temperature and humidity meter are arranged on the top of the test chamber; an observation hole is arranged on the outer periphery of the test chamber.

9. A test fixture according to any one of claims 5 to 8, wherein, The test chamber comprises: a cylindrical barrel, and an observation hole is arranged on the barrel; an upper end cover arranged on the top of the barrel, and an inflation valve, a densimeter and a temperature and humidity meter are arranged on the upper end cover; a lower bottom cover arranged on the bottom of the barrel, and a suction valve is arranged on the lower bottom cover.

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