Electrostatic tester

Abstract

The utility model discloses an electrostatic tester which comprises an electrostatic test body and a distance test assembly, and the electrostatic test body comprises a case and an electrostatic induction piece installed in the case. The distance testing assembly comprises a distance spacer and a locking assembly for locking the distance spacer and the case, and the limiting end of the distance spacer can protrude out of the end, provided with the electrostatic induction piece, of the electrostatic testing body so as to separate the electrostatic induction piece from the tested object by a preset spacing distance. In the static tester provided by the utility model, the distance spacer is locked at the preset position through the locking assembly, and the limiting end of the distance spacer protrudes out of the static test body. When an electrostatic test is carried out, when the limiting end of the distance spacer is in contact with the tested object, it is indicated that the electrostatic induction piece and the tested object reach the preset spacing distance, and the electrostatic discharge situation caused by the situation that the distance between the electrostatic induction piece and the tested object is too short is reduced. Therefore, the static tester provided by the invention improves the safety in the static test process.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic testing, in particular to an electrostatic tester. Background Art

[0002] There is high-speed air and hydrogen in the fuel cell system. The high-speed air and hydrogen, as well as the dust and water droplets in the gas, rub and collide with the pipe wall, generating a large amount of static ions, causing static electricity to accumulate in a certain place. When the charge accumulates to a certain level, static electricity discharge will occur, which will affect the function of some circuits in the system.

[0003] For example, the operating environment of hydrogen fuel cells necessarily involves hydrogen, and electrostatic discharge can lead to safety issues such as fires and explosions due to extreme conditions such as hydrogen leaks. Detecting static accumulation points in the system and developing appropriate static elimination measures are crucial. When testing, operators can accidentally bring static sensing components too close to the object being measured, leading to electrostatic discharge protection, which poses a safety risk in fuel cell systems.

[0004] Therefore, how to improve the safety during electrostatic testing is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0005] The purpose of the utility model is to provide an electrostatic tester to improve the safety during the electrostatic testing process.

[0006] The electrostatic tester provided in this application includes:

[0007] An electrostatic test body, the electrostatic test body comprising a chassis and an electrostatic induction component mounted on the chassis;

[0008] A distance testing component includes a distance spacer and a locking component for locking the distance spacer and the chassis. The limiting end of the distance spacer can protrude outward from the electrostatic testing body to install one end of the electrostatic induction component, so as to separate the electrostatic induction component and the object to be tested by a preset distance.

[0009] Optionally, the above-mentioned electrostatic tester further includes a cover plate, which is installed on the surface of the chassis. The cover plate is provided with a slide groove that slides with the distance spacer. The distance spacer can slide along the slide groove to adjust the distance between the electrostatic induction component and the object to be measured.

[0010] Optionally, in the above-mentioned electrostatic tester, the locking assembly includes a threaded locking member, the distance testing assembly also includes a stud fixedly mounted on the distance spacer, the cover plate is provided with a guide hole for the stud to pass through, and the threaded locking member and the distance spacer are located on two sides of the cover plate that are arranged in opposite directions; the threaded locking member is threadedly connected to the free end of the stud, and the end face can abut against the cover plate to lock the distance testing assembly.

[0011] Optionally, in the above-mentioned electrostatic tester, at least two studs are provided on the distance spacer, the number of the studs is the same as the number of the guide holes and they correspond one to one, and each of the studs is threadedly connected to one of the threaded locking members.

[0012] Optionally, in the above-mentioned electrostatic tester, the threaded locking part includes a rotating cap and a sleeve, the sleeve is connected to the open end of the rotating cap and is used to lock with the distance testing assembly, the sleeve is sleeved on the outer periphery of the stud, at least one of the rotating cap and the sleeve is threadedly connected to the stud, and the outer peripheral surface of the rotating cap is provided with a rotating operating surface.

[0013] Optionally, in the above-mentioned electrostatic tester, the outer peripheral surface of the rotating cap is a regular hexagonal structure that can be adapted to the wrench.

[0014] Optionally, in the above-mentioned electrostatic tester, the cover plate is provided with a U-shaped opening opening toward the electrostatic induction component, and the slide groove is arranged on opposite sides of the U-shaped opening; the electrostatic induction component and the cover plate are provided with a scale, and the other is provided with an indicator arrow pointing to the scale, and the indicator arrow indicates the scale value of the extension distance of the limit end relative to the electrostatic induction component.

[0015] Optionally, in the above-mentioned electrostatic tester, a stop block is provided at one end of the distance spacer away from the limit end. When the distance spacer slides to the bottom of the groove of the U-shaped opening, the stop block abuts against the bottom of the groove of the U-shaped opening. The distance between the limit end of the distance spacer and the electrostatic induction component is the shortest preset distance between the electrostatic induction component and the object to be measured, and the electrostatic induction component is located between the limit end and the chassis.

[0016] Optionally, in the above-mentioned electrostatic tester, the distance testing component is arranged on the back of the chassis, the front of the chassis is provided with an instrument and an operation button, the electrostatic induction component is arranged on the top of the chassis, and the distance spacer can slide up and down.

[0017] Optionally, in the above-mentioned electrostatic tester, the electrostatic tester is an electrostatic tester suitable for a hydrogen fuel cell system.

[0018] In the above technical solution, the electrostatic tester provided by the utility model includes an electrostatic test body and a distance test assembly. The electrostatic test body includes a chassis and an electrostatic induction component installed on the chassis. The distance test assembly includes a distance spacer and a locking assembly for locking the distance spacer and the chassis. The limiting end of the distance spacer can protrude outward from one end of the electrostatic induction component installed on the electrostatic test body to space the electrostatic induction component and the object to be measured by a preset distance. When the electrostatic tester is needed, first, the distance spacer is pulled out relative to the electrostatic test body at one end according to needs, and the limiting end of the distance spacer protrudes outward from the electrostatic test body so that the electrostatic induction component and the object to be measured are spaced by a preset distance. The distance spacer is then locked and fixed to the chassis by the locking assembly. When performing an electrostatic test, when the limiting end of the distance spacer contacts the object to be measured, the electrostatic tester is prevented from moving further toward the object to be measured.

[0019] As can be seen from the above description, in the electrostatic tester provided by this application, the distance spacer is locked in a preset position by a locking assembly, and the limiting end of the distance spacer protrudes outward from the electrostatic test body. During the electrostatic test, when the limiting end of the distance spacer contacts the object being tested, it indicates that the electrostatic induction element and the object being tested have reached the preset distance, reducing the electrostatic discharge caused by the electrostatic induction element and the object being tested being too close. Therefore, the electrostatic tester provided by this application improves the safety of the electrostatic test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 A schematic diagram of the structure of an electrostatic tester provided in an embodiment of the present utility model;

[0022] Figure 2 A schematic structural diagram of an electrostatic tester from another perspective provided by an embodiment of the present utility model;

[0023] Figure 3 A schematic structural diagram of a cover plate provided in an embodiment of the present utility model;

[0024] Figure 4 A schematic structural diagram of a distance spacer provided in an embodiment of the present utility model;

[0025] Figure 5 A schematic structural diagram of another distance spacer provided in an embodiment of the present utility model;

[0026] Figure 6 A schematic structural diagram of an electrostatic induction element provided in an embodiment of the present utility model;

[0027] Figure 7 This is a front view of the cover provided by an embodiment of the present utility model.

[0028] in Figure 1-7 middle:

[0029] 1- electrostatic test body, 11- electrostatic induction element, 12- instrument, 13- operation button, 14- chassis;

[0030] 2-cover plate, 21-guide hole, 22-slide groove, 23-limiting step surface, 24-indicator arrow;

[0031] 3-distance spacer, 31-scale, 32-limit end, 33-stopper, 34-stud;

[0032] 4-locking assembly;

[0033] 5-Screws. DETAILED DESCRIPTION

[0034] The core of the utility model is to provide an electrostatic tester to improve the safety during the electrostatic testing process.

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0036] Please refer to Figures 1 to 7 .

[0037] In one embodiment, the electrostatic tester provided by the present invention includes an electrostatic test body and a distance test assembly. The electrostatic test body includes a chassis 14 and an electrostatic induction element 11 mounted on the chassis 14. The electrostatic induction element 11 is also called an electrostatic induction plate or an electrostatic coupling plate. When the electrostatic induction element 11 is close to the object being tested, it induces a corresponding static charge through electrostatic induction. The amount of induced charge varies depending on the test distance. The actual electrostatic charge of the object being tested can be calculated based on the test distance and the induced charge.

[0038] Specifically, the electrostatic tester can be used for electrostatic testing in a fuel cell system. For example, the electrostatic tester is an electrostatic tester suitable for a hydrogen fuel cell system.

[0039] The distance test assembly includes a distance spacer 3 and a locking assembly 4 that locks the distance spacer 3 to the chassis 14. The limiting end 32 of the distance spacer 3 can protrude from one end of the electrostatic induction element 11 mounted on the electrostatic test body to separate the electrostatic induction element 11 from the object under test by a predetermined distance. Specifically, the locking assembly 4 can be a limiting post. The distance spacer 3 and the chassis 14 are provided with a plurality of limiting holes. When the distance spacer 3 slides to a predetermined position, the limiting post inserts into the limiting holes of the distance spacer 3 and the chassis 14 to limit the relative movement of the distance spacer 3 and the chassis 14.

[0040] Specifically, such as Figure 4 As shown, the limiting end 32 can be a convex structure with a smooth transition, or it can be Figure 5 As shown, the limiting end 32 is a pointed end structure that tapers toward the free end.

[0041] In order to improve the group efficiency, preferably, the distance spacer 3 is an integrally formed structure.

[0042] To use the electrostatic tester, first extend the distance spacer 3 relative to the electrostatic tester body as needed, with the stopper end 32 of the distance spacer 3 protruding from the electrostatic tester body. This ensures that the electrostatic sensing element 11 is spaced a predetermined distance from the object being tested. The distance spacer 3 is then locked to the chassis 14 using the locking assembly 4. During electrostatic testing, when the stopper end 32 of the distance spacer 3 contacts the object being tested, the electrostatic tester is prevented from moving further toward the object.

[0043] As can be seen from the above description, in the electrostatic tester provided in the specific embodiment of the present application, the distance spacer 3 is locked in a preset position by the locking assembly 4, and the limiting end 32 of the distance spacer 3 protrudes outward from the electrostatic test body. When the electrostatic test is performed, when the limiting end 32 of the distance spacer 3 contacts the object to be tested, it indicates that the electrostatic induction component 11 and the object to be tested have reached a preset distance, thereby reducing the electrostatic discharge caused by the electrostatic induction component 11 and the object to be tested being too close. Therefore, the electrostatic tester provided by the present application improves the safety during the electrostatic test process.

[0044] In a specific embodiment, the electrostatic tester further includes a cover plate 2, which is mounted on the surface of the chassis 14. Specifically, preferably, the cover plate 2 is detachably connected to the chassis 14, for example, the cover plate 2 is mounted on the chassis 14 by screws 5. Specifically, the cover plate 2 can be a flat plate structure.

[0045] The cover plate 2 is provided with a slide groove 22 that is slidably matched with the distance spacer 3. The distance spacer 3 can slide along the slide groove 22 to adjust the distance between the electrostatic induction element 11 and the object to be measured. Figure 3As shown, a vertical slot 22 is provided, allowing the distance spacer 3 to slide up and down. Specifically, the slot 22 can be formed by a concave step on the surface of the cover 2. The slot 22 faces the chassis 14, and the distance spacer 3 is positioned along a guide rail formed by the slot 22 and the chassis 14. The slot 22 allows the distance spacer 3 to slide freely along the guide rail, which guides the movement of the distance spacer 3.

[0046] In a specific embodiment, the locking assembly 4 includes a threaded locking member, and the distance testing assembly further includes a stud 34 fixedly mounted on the distance spacer 3. Specifically, the distance spacer 3 can be installed with a stud 34. The cover plate 2 is provided with a guide hole 21 for the stud 34 to pass through, and the threaded locking member and the distance spacer 3 are located on two sides of the cover plate 2 that are arranged opposite to each other; the threaded locking member is threadedly connected to the free end of the stud 34, and the end face can abut against the cover plate 2 to lock the distance testing assembly. During specific use, the stud 34 can move freely in the guide hole 21. The locking assembly 4 is used in conjunction with the stud 34 to relatively fix the chassis 14, the distance spacer 3, and the distance spacer 3.

[0047] In one embodiment, the distance spacer 3 is provided with at least two studs 34, the same number of studs 34 as guide holes 21, i.e., two guide holes 21 are also provided. Each stud 34 corresponds to each guide hole 21, and each stud 34 is threadedly connected to a threaded locking member, specifically, a nut. To facilitate the upward and downward movement of the distance spacer 3, the two studs 34 are preferably of the same height.

[0048] In one embodiment, the thread locking member includes a rotating cap and a sleeve. Preferably, the rotating cap seals the free end of the stud 34. The sleeve is connected to the open end of the rotating cap and is used to lock the distance test assembly. To improve assembly efficiency, the rotating cap and the sleeve are preferably integrally formed.

[0049] The sleeve is mounted around the outer periphery of the stud 34. At least one of the rotating cap and the sleeve is threadedly connected to the stud 34. The outer periphery of the rotating cap is provided with a rotating operating surface to facilitate user operation. Specifically, the rotating operating surface is provided with a flat surface. By providing the sleeve and rotating cap, the stud 34 is prevented from being exposed, the length of the threaded locking member is extended, and the threaded locking member is facilitated.

[0050] In a specific embodiment, in order to facilitate the rotation of the rotating cap, preferably, the outer peripheral surface of the rotating cap is a regular hexagonal structure that can be adapted to a wrench. Specifically, the threaded locking member can be rotated with the help of a tool.

[0051] In a specific embodiment, the cover plate 2 is provided with a U-shaped opening opening toward the electrostatic induction component 11, and the slide groove 22 is arranged on opposite sides of the U-shaped opening. The electrostatic induction component 11 and the cover plate 2 are provided with a scale 31, and the other is provided with an indicator arrow 24 pointing to the scale 31. The indicator arrow 24 indicates the scale value of the extension distance of the limit end 32 relative to the electrostatic induction component 11.

[0052] Specifically, the scale 31 can be hollowed out, for example, by engraving, or the scale 31 can be protruded from the corresponding structure, for example, by printing on the surface of the corresponding structure.

[0053] like Figure 1 and Figure 4 As shown, scale 31 is provided on distance spacer 3, which in this case functions as a movable ruler. Indicator arrow 24 is provided on cover plate 2. Indicator arrow 24 indicates the current distance between electrostatic induction element 11 and the object being measured, i.e., the current test distance. During testing, the limiting end 32 of distance spacer 3 contacts the object being measured, ensuring accurate test distance and preventing distance measurement errors from affecting the electrostatic test results.

[0054] A stopper 33 is provided at one end of the distance spacer 3, distal from the limiting end 32. When the distance spacer 3 slides to the bottom of the U-shaped opening, the stopper 33 abuts the bottom of the U-shaped opening, positioning the electrostatic induction element 11 between the limiting end 32 and the chassis 14. The distance between the limiting end 32 of the distance spacer 3 and the electrostatic induction element 11 is the shortest preset distance between the electrostatic induction element 11 and the object under test. Specifically, when the stopper 33 of the distance spacer 3 moves to the limiting step 23, the distance spacer 3 cannot move further. This prevents excessive movement of the distance spacer 3, which could bring the electrostatic induction element 11 too close to the object under test and cause electrostatic discharge, thereby improving the safety of electrostatic testing in hydrogen fuel cell systems.

[0055] In one embodiment, the sliding direction of the distance spacer 3 is perpendicular to the electrostatic sensing surface of the electrostatic sensing element 11. For example, the electrostatic sensing surface of the electrostatic sensing element 11 is horizontally arranged, and the sliding direction of the distance spacer 3 is vertical. By setting the sliding direction of the distance spacer 3 perpendicular to the electrostatic sensing surface of the electrostatic sensing element 11, it is convenient to accurately measure the distance between the limit end 32 and the electrostatic sensing element 11.

[0056] In one embodiment, the distance measuring assembly is located on the back of a housing 14. A meter 12 and an operating button 13 are located on the front of the housing 14. The electrostatic induction element 11 is located at the top of the housing 14, and the distance spacer 3 is capable of sliding up and down. Because the position of the stopper 32 of the distance spacer 3 does not need to be adjusted during testing, its placement on the back of the housing 14 avoids interference with other components. This also prevents accidental contact of the distance measuring assembly when operating the operating button 13.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrostatic tester, characterized in that: include: An electrostatic test body, the electrostatic test body comprising a chassis (14) and an electrostatic induction component (11) installed on the chassis (14); A distance test assembly, comprising a distance spacer (3) and a locking assembly (4) for locking the distance spacer (3) and the chassis (14); a limiting end (32) of the distance spacer (3) can protrude outward from one end of the electrostatic induction component (11) mounted on the electrostatic test body to space the electrostatic induction component (11) from the object to be tested by a preset distance.

2. The electrostatic tester according to claim 1, characterized in that: The invention also includes a cover plate (2), the cover plate (2) being mounted on the surface of the chassis (14), the cover plate (2) being provided with a slide groove (22) that slidably cooperates with the distance spacer (3), and the distance spacer (3) being able to slide along the slide groove (22) to adjust the distance between the electrostatic induction component (11) and the object to be measured.

3. The electrostatic tester according to claim 2, characterized in that: The locking assembly (4) includes a threaded locking member, and the distance testing assembly also includes a stud (34) fixedly mounted on the distance spacer (3). The cover plate (2) is provided with a guide hole (21) for the stud (34) to pass through. The threaded locking member and the distance spacer (3) are located on two sides of the cover plate (2) that are arranged in opposite directions. The threaded locking member is threadedly connected to the free end of the stud (34), and the end face can abut against the cover plate (2) to lock the distance testing assembly.

4. The electrostatic tester according to claim 3, characterized in that: At least two studs (34) are provided on the distance spacer (3), the number of the studs (34) is the same as the number of the guide holes (21), and they correspond one to one, and each of the studs (34) is threadedly connected to a threaded locking member.

5. The electrostatic tester according to claim 3, characterized in that: The threaded locking member includes a rotating cap and a sleeve, wherein the sleeve is connected to the open end of the rotating cap and is used to lock the distance testing assembly, the sleeve is sleeved on the outer periphery of the stud (34), and at least one of the rotating cap and the sleeve is threadedly connected to the stud (34), and the outer peripheral surface of the rotating cap is provided with a rotating operating surface.

6. The electrostatic tester according to claim 5, characterized in that: The outer peripheral surface of the rotating cap is a regular hexagonal structure that can be adapted to the wrench.

7. The electrostatic tester according to claim 2, characterized in that: The cover plate (2) is provided with a U-shaped opening opening toward the electrostatic induction component (11), and the slide grooves (22) are arranged on opposite sides of the U-shaped opening; one of the electrostatic induction component (11) and the cover plate (2) is provided with a scale (31), and the other is provided with an indicating arrow (24) pointing to the scale (31), and the indicating arrow (24) indicates the scale value of the extension distance of the limit end (32) relative to the electrostatic induction component (11).

8. The electrostatic tester according to claim 7, characterized in that: A stopper (33) is provided at one end of the distance spacer (3) away from the limiting end (32); when the distance spacer (3) slides to the bottom of the groove of the U-shaped opening, the stopper (33) abuts against the bottom of the groove of the U-shaped opening; the distance between the limiting end (32) of the distance spacer (3) and the electrostatic induction component (11) is the shortest preset distance between the electrostatic induction component (11) and the object to be measured; and the electrostatic induction component (11) is located between the limiting end (32) and the chassis (14).

9. The electrostatic tester according to claim 1, characterized in that: The distance test assembly is arranged on the back of the chassis (14); a meter (12) and an operation button (13) are provided on the front of the chassis (14); the electrostatic induction component (11) is arranged on the top of the chassis (14); and the distance spacer (3) can slide up and down.

10. The electrostatic tester according to any one of claims 1 to 9, characterized in that: The electrostatic tester is an electrostatic tester suitable for a hydrogen fuel cell system.

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