Tool and device for testing withstand voltage of ignition needle

Abstract

The utility model discloses a withstand voltage test tool for an ignition needle, which is characterized by comprising a positive electrode strip (2a) and a negative electrode strip (2b) which are arranged at an interval, the positive electrode strip (2a) is provided with an insulating limiting seat (3) and a conductive strip (4), the side surface of the conductive strip (4) is tightly attached to the surface of the positive electrode strip (2a), the negative electrode strip (2b) is provided with a conductive limiting seat (5), and the conductive limiting seat (5) is tightly attached to the conductive limiting seat (5) in a test state. The insulation sheet (102) is limited on the insulation limiting seat (3), the bottom edge of the insulation sheet (102) is tightly attached to the side face of the conductive strip (4), and the head of the conductive needle body (101) is limited on the conductive limiting seat (5). The utility model also discloses an ignition needle voltage withstanding test device using the ignition needle voltage withstanding test tool. Compared with the prior art, the ignition needle voltage withstanding test tool is convenient for testing the voltage withstanding performance of the ignition needle and reduces the test error rate.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to an ignition needle withstand voltage testing tool and device. Background Art

[0002] The ignition needle of a household gas instantaneous water heater is composed of insulating ceramics and metal parts. When the household gas instantaneous water heater is ignited, the igniter is connected to the ignition needle, and a high-voltage spark is generated at the head of the ignition needle, thereby igniting the gas. Both the igniter and the ignition needle need to be tested for performance after production before being put on the market.

[0003] For the igniter, the Chinese patent application number CN 201410408798.3, "An igniter performance test system and method", provides an igniter performance test system that can test the igniter's operating voltage, operating current, discharge distance, ignition high voltage, discharge energy, discharge cycle, discharge pulse width, discharge frequency and other performance.

[0004] For the ignition needle, since the ignition needle ceramic has to withstand a DC voltage of 12KV, in order to ensure the reliability of the ignition needle, the ignition needle ceramic must be subjected to a withstand voltage test of more than 12KV, but there is no special equipment for the withstand voltage test of the ignition needle. During the existing withstand voltage test of the ignition needle, a metal aluminum foil is pasted 10mm away from the metal and the ceramic. Since the edge size of the ceramic is only 3mm, the metal aluminum foil will be burned when the voltage is too high or the metal aluminum foil is folded, resulting in the inability to conduct the withstand voltage test. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide an ignition needle pressure resistance test tooling which is convenient for testing the pressure resistance performance of the ignition needle and reduces the test error rate in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide an ignition pin pressure test device using the ignition pin pressure test tool.

[0007] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: an ignition needle withstand voltage test tool, the ignition needle includes a conductive needle body and an insulating sheet installed at the tail of the conductive needle body, characterized in that: it includes a positive electrode bar and a negative electrode bar arranged at intervals, the positive electrode bar is equipped with an insulating limit seat and a conductive strip, the side of the conductive strip is tightly attached to the surface of the positive electrode bar, and the negative electrode bar is equipped with a conductive limit seat. In the test state, the ignition needle is arranged horizontally, the insulating sheet is limited on the insulating limit seat, and the bottom edge of the insulating sheet is tightly attached to the side of the conductive strip, and the head of the conductive needle body is limited on the conductive limit seat.

[0008] In order to improve the test safety, it also includes a slot body with an upward opening and containing insulating oil. The positive electrode strip and the negative electrode strip are both installed on the slot body. In the test state, the ignition needle is immersed in the insulating oil in the slot body.

[0009] In order to facilitate wiring while ensuring that the ignition needle is immersed in insulating oil, the first ends of the positive and negative electrode strips have wiring terminals, which are located outside the slot body, and the second ends of the positive and negative electrode strips are located in the slot body, the insulating limit seat and the conductive strip are installed at the second end of the positive electrode strip, and the conductive limit seat is installed at the second end of the negative electrode strip.

[0010] In order to facilitate the processing of the positive electrode bar and the negative electrode bar, the positive electrode bar and the negative electrode bar each include a first horizontal section, a vertical section and a second horizontal section connected in sequence, the second horizontal section is arranged lower than the first horizontal section, the wiring terminal is located at the head of the first horizontal section, the insulating limit seat and the conductive bar are installed at the tail of the second horizontal section of the positive electrode bar, and the conductive limit seat is installed at the tail of the second horizontal section of the negative electrode bar.

[0011] In order to facilitate the installation of the positive electrode strip and the negative electrode strip, the first horizontal section is connected to the edge of the top of the trough body.

[0012] In order to save space, the positive electrode strips and the negative electrode strips are arranged side by side.

[0013] In order to facilitate the limiting of the insulating sheet, the insulating limit seat is U-shaped and is vertically arranged on the surface of the positive electrode bar. The inner side walls on the left and right sides of the insulating limit seat are provided with limiting grooves extending in the vertical direction. The wall surface on the bottom side of the insulating limit seat is penetrated by a mounting groove for accommodating the conductive strip. The side surface of the bottom of the conductive strip is tightly attached to the surface of the positive electrode bar. In the test state, the edges on the left and right sides of the insulating sheet are respectively inserted into the limiting grooves on the left and right sides of the insulating limit seat, and the bottom edge of the insulating sheet is tightly attached to the side surface of the top of the conductive strip.

[0014] In order to facilitate the limiting of the head of the conductive needle body, the conductive limiting seat includes a base installed on the surface of the negative electrode strip and a left clamping arm and a right clamping arm arranged on the top of the base. In the test state, the head of the conductive needle body is clamped between the left clamping arm and the right clamping arm.

[0015] The technical solution adopted by the utility model to solve the above second technical problem is: an ignition pin withstand voltage test device, including a withstand voltage tester and a transformer, characterized in that: it also includes the above ignition pin withstand voltage test tooling.

[0016] Preferably, the positive input terminal and the negative input terminal of the transformer are electrically connected to the positive electrode and the negative electrode of the withstand voltage tester respectively, and the positive output terminal and the negative output terminal of the transformer are electrically connected to the positive electrode bar and the negative electrode bar respectively.

[0017] Compared with the prior art, the utility model has the advantages that: by installing an insulating limit seat and a conductive strip on the positive electrode bar, and making the side of the conductive strip close to the surface of the positive electrode bar, and installing a conductive limit seat on the negative electrode bar, in the test state, the ignition needle is arranged horizontally, the insulating sheet is limited on the insulating limit seat, and the bottom edge of the insulating sheet is close to the side of the conductive strip, and the head of the conductive needle body is limited on the conductive limit seat. In this way, the ignition needle is easy to install, and there is no need for the initial pasting of soft metal aluminum foil. Overload fusing due to too small an area of ​​the metal aluminum foil and too high a voltage can be avoided, thereby reducing the error rate of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of an ignition needle pressure test tool in an embodiment of the ignition needle pressure test device of the utility model;

[0019] Figure 2 for Figure 1 Longitudinal cross-sectional view of . DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0022] like Figure 1 and Figure 2 As shown, a preferred embodiment of the ignition needle withstand voltage test device of the utility model is shown. The ignition needle withstand voltage test device includes a withstand voltage tester (not shown in the figure), a transformer (not shown in the figure) and an ignition needle withstand voltage test tool. The ignition needle 10 includes a conductive needle body 101 and an insulating sheet 102 installed at the tail of the conductive needle body 101. The conductive needle body 101 is made of metal material, and the insulating sheet 102 is made of ceramic material.

[0023] Among them, the model of the voltage withstand tester is RK2674C, which can provide basic voltage and manually adjust DC voltage value, power-on time, reset and other functions.

[0024] The positive input terminal and the negative input terminal of the transformer are electrically connected to the positive pole and the negative pole of the above-mentioned withstand voltage tester respectively, and the transformer can boost the 220V voltage to the DC high voltage to be tested.

[0025] The ignition needle withstand voltage test tool comprises a slot body 1, a positive electrode strip 2a, a negative electrode strip 2b, an insulating limit seat 3, a conductive strip 4 and a conductive limit seat 5, and the positive electrode strip 2a, the negative electrode strip 2b, the conductive strip 4 and the conductive limit seat 5 are all made of metal materials.

[0026] Specifically, the opening of the tank body 1 faces upward and contains insulating oil.

[0027] The positive electrode strip 2a and the negative electrode strip 2b are arranged side by side and spaced apart. In this embodiment, the positive electrode strip 2a and the negative electrode strip 2b each include a first horizontal section 21, a vertical section 22 and a second horizontal section 23 connected in sequence; the first horizontal section 21 is connected to the edge of the top of the tank body 1, and the head of the first horizontal section 21 has a terminal 211, which is located outside the tank body 1; the second horizontal section 23 is arranged lower than the first horizontal section 21 and is located inside the tank body 1. The positive output terminal and the negative output terminal of the transformer are electrically connected to the terminal 211 of the positive electrode strip 2a and the negative electrode strip 2b, respectively.

[0028] The insulating limit seat 3 is U-shaped and is vertically arranged on the surface of the tail of the second horizontal section 23 of the positive electrode bar 2a. The inner walls on the left and right sides of the insulating limit seat 3 are provided with limit grooves 31 extending in the vertical direction, and the wall surface on the bottom side of the insulating limit seat 3 is penetrated by an installation groove 32.

[0029] The conductive strip 4 is accommodated in the mounting groove 32 , and the side surface of the bottom of the conductive strip 4 is closely attached to the surface of the tail of the second horizontal section 23 of the positive electrode strip 2 a .

[0030] The conductive limit seat 5 includes a base 51, a left clamping arm 52 and a right clamping arm 53. The base 51 is installed on the surface of the tail of the second horizontal section 23 of the negative electrode strip 2b; the left clamping arm 52 and the right clamping arm 53 are arranged on the top of the base 51.

[0031] In the test state, the ignition needle 10 is arranged horizontally and immersed in the insulating oil in the slot body 1, the edges on the left and right sides of the insulating sheet 102 are respectively inserted into the limit grooves 31 on the left and right sides of the insulating limit seat 3, the bottom edge of the insulating sheet 102 is tightly attached to the side of the top of the conductive strip 4, and the head of the conductive needle body 101 is clamped between the left clamping arm 52 and the right clamping arm 53 of the conductive limit seat 5.

[0032] The working principle of this embodiment is as follows: during the test, the ignition needle 10 is laid down horizontally, and the edges on the left and right sides of the insulating sheet 102 are aligned with the limit grooves 31 on the left and right sides of the insulating limit seat 3 and inserted until the bottom edge of the insulating sheet 102 is tightly attached to the side of the top of the conductive strip 4. At the same time, the head of the conductive needle body 101 is clamped by the left clamping arm 52 and the right clamping arm 53 of the conductive limit seat 5. At this time, the withstand voltage tester is started to perform a withstand voltage test on the ignition needle 10.

[0033] The advantages of the above scheme are:

[0034] (1) The ignition needle 10 is easy to install, and there is no need to stick the soft metal aluminum foil in the early stage, which can avoid the overload fuse caused by the small area of ​​the metal aluminum foil and the high voltage, thereby reducing the error rate of the test;

[0035] (2) The slot 1 contains insulating oil, which can prevent creepage and electric shock to testers during the DC high voltage test. During the test, the contact between the tester and the DC high voltage is reduced, thereby improving the safety of the test.

Claims

1. An ignition needle withstand voltage test tool, the ignition needle (10) comprising a conductive needle body (101) and an insulating sheet (102) installed at the tail of the conductive needle body (101), characterized in that: The invention comprises a positive electrode strip (2a) and a negative electrode strip (2b) arranged at intervals, wherein the positive electrode strip (2a) is provided with an insulating limit seat (3) and a conductive strip (4), the side of the conductive strip (4) is in close contact with the surface of the positive electrode strip (2a), and the negative electrode strip (2b) is provided with a conductive limit seat (5). In a test state, the ignition needle (10) is arranged horizontally, the insulating sheet (102) is limited on the insulating limit seat (3), and the bottom edge of the insulating sheet (102) is in close contact with the side of the conductive strip (4), and the head of the conductive needle body (101) is limited on the conductive limit seat (5).

2. The ignition needle withstand voltage test tool according to claim 1, characterized in that: It also includes a tank body (1) with an upward opening and containing insulating oil. The positive electrode strip (2a) and the negative electrode strip (2b) are both installed on the tank body (1). In a test state, the ignition needle (10) is immersed in the insulating oil in the tank body (1).

3. The ignition needle withstand voltage test tool according to claim 2, characterized in that: The first ends of the positive electrode strip (2a) and the negative electrode strip (2b) have a connection terminal (211), and the connection terminal (211) is located outside the slot body (1). The second ends of the positive electrode strip (2a) and the negative electrode strip (2b) are located inside the slot body (1). The insulating limit seat (3) and the conductive strip (4) are installed at the second end of the positive electrode strip (2a), and the conductive limit seat (5) is installed at the second end of the negative electrode strip (2b).

4. The ignition needle withstand voltage test tool according to claim 3, characterized in that: The positive electrode strip (2a) and the negative electrode strip (2b) both comprise a first horizontal section (21), a vertical section (22) and a second horizontal section (23) connected in sequence, the second horizontal section (23) being arranged lower than the first horizontal section (21), the connection terminal (211) being located at the head of the first horizontal section (21), the insulating stopper (3) and the conductive strip (4) being installed at the tail of the second horizontal section (23) of the positive electrode strip (2a), and the conductive stopper (5) being installed at the tail of the second horizontal section (23) of the negative electrode strip (2b).

5. The ignition needle withstand voltage test tool according to claim 4, characterized in that: The first horizontal section (21) is connected to the edge of the top of the trough body (1).

6. The ignition needle withstand voltage test tool according to claim 4, characterized in that: The positive electrode strips (2a) and the negative electrode strips (2b) are arranged side by side.

7. The ignition needle withstand voltage test tool according to any one of claims 1 to 6, characterized in that: The insulating limit seat (3) is U-shaped and is vertically arranged on the surface of the positive electrode bar (2a). The inner side walls on the left and right sides of the insulating limit seat (3) are provided with limit grooves (31) extending in the vertical direction. The wall surface on the bottom side of the insulating limit seat (3) is penetrated by a mounting groove (32) for accommodating the conductive strip (4). The side surface of the bottom of the conductive strip (4) is tightly attached to the surface of the positive electrode bar (2a). In the test state, the edges on the left and right sides of the insulating sheet (102) are respectively inserted into the limit grooves (31) on the left and right sides of the insulating limit seat (3), and the bottom edge of the insulating sheet (102) is tightly attached to the side surface of the top of the conductive strip (4).

8. The ignition needle withstand voltage test tool according to any one of claims 1 to 6, characterized in that: The conductive limit seat (5) comprises a base (51) mounted on the surface of the negative electrode strip (2b) and a left clamping arm (52) and a right clamping arm (53) arranged on the top of the base (51); in a test state, the head of the conductive needle body (101) is clamped between the left clamping arm (52) and the right clamping arm (53).

9. An ignition needle withstand voltage test device, comprising a withstand voltage tester and a transformer, characterized in that: It also includes the ignition needle pressure test tool as described in any one of claims 1 to 8.

10. The ignition needle withstand voltage test device according to claim 9, characterized in that: The positive input terminal and the negative input terminal of the transformer are electrically connected to the positive electrode and the negative electrode of the withstand voltage tester respectively, and the positive output terminal and the negative output terminal of the transformer are electrically connected to the positive electrode bar (2a) and the negative electrode bar (2b) respectively.

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