Novel high-voltage sodium lamp electrode

Abstract

The utility model discloses a novel high pressure sodium lamp electrode, which belongs to the electrical technical field and comprises a niobium tube electrode holder, the top of the niobium tube electrode holder is fixedly sleeved with a lower tungsten rod, the outer side of the top end of the lower tungsten rod is fixedly sleeved with a tungsten tube, the top end of the tungsten tube is fixedly sleeved with an upper tungsten rod, and a powder containing groove is arranged in the tungsten tube. Electronic powder is arranged in the powder containing groove. According to the utility model, the powder containing groove is arranged in the middle of the tungsten tube, the upper tungsten rod and the lower tungsten rod are inserted into the bottom end of the tungsten tube, the electronic powder is contained in the inner cavity of the powder containing groove, the upper tungsten rod is inserted into the top end of the tungsten tube at the moment, and the electronic powder is sealed in the powder containing groove in the tungsten tube by utilizing the lower tungsten rod and the upper tungsten rod, so that the electronic powder is prevented from chemical reaction with sodium; the service life of the sodium lamp is effectively prolonged, and the electrode has the advantages of simple structure and no powder immersion problem.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical technology field more particularly, relate to a novel high pressure sodium lamp electrode. BACKGROUND

[0002] High pressure sodium lamp is a kind of gas discharge lamp, emits gold white light when using, has the advantages such as high luminous efficiency, low power consumption, long life, strong fog ability and not lure insect. It is widely used in road, highway, airport, wharf, dock, station, square, street intersection, industrial and mining enterprises, park, courtyard lighting and plant cultivation. As an important component of high pressure sodium lamp, the structure of electrode directly influences the performance of high pressure sodium lamp.

[0003] The electrode structure of commonly used high pressure sodium lamp includes tungsten rod and tungsten spiral, tungsten spiral is wound on tungsten rod, and is double-layer winding. The electrode of this structure has the following shortcomings: electrode needs to be treated by dipping powder, and the electronic powder in tungsten spiral is dipped. In the later stage of sodium lamp life, the electronic powder in tungsten spiral will be ionized to react with sodium atom in sodium lamp, sodium atom in arc tube is gradually consumed, mercury atom proportion is increased, tube pressure is increased, and it is not matched with ballast, which can cause lampout, trigger is triggered continuously, and the lamp is continuously extinguished and lightened, causing damage to electrical system and affecting normal lighting. Therefore, we propose a novel high pressure sodium lamp electrode. SUMMARY

[0004] In view of the problems in the above background art, the purpose of the utility model is to provide a novel high pressure sodium lamp electrode.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] A novel high pressure sodium lamp electrode, including niobium tube electrode seat, the top of niobium tube electrode seat is fixedly sleeved with lower tungsten rod, the outer side of the top of lower tungsten rod is fixedly sleeved with tungsten tube, the top of tungsten tube is fixedly sleeved with upper tungsten rod, the inside of tungsten tube is provided with powder loading groove, and the inside of powder loading groove is provided with electronic powder.

[0007] As a preferred scheme of the utility model, the bottom of tungsten tube is provided with lower insertion stepped hole, and the top of lower tungsten rod is fixedly sleeved to the inner cavity of lower insertion stepped hole.

[0008] As a preferred scheme of the utility model, the top of tungsten tube is provided with upper insertion stepped hole, and the bottom of upper tungsten rod is fixedly sleeved to the inner cavity of upper insertion stepped hole.

[0009] As a preferred scheme of the utility model, the top of niobium tube electrode seat is provided with positioning hole, the bottom of lower tungsten rod is provided with insertion stepped column, and the bottom of insertion stepped column is fixedly sleeved to the inner cavity of positioning hole.

[0010] As a preferred scheme of the utility model, the outer side of the niobium tube electrode seat is provided with annular positioning protrusions.

[0011] As a preferred scheme of the utility model, the inner diameter of the lower insertion stepped hole is smaller than the outer diameter of the lower tungsten rod, and the inner diameter of the upper insertion stepped hole is smaller than the outer diameter of the upper tungsten rod.

[0012] The utility model discloses the advantages are:

[0013] In the utility model, the powder tank is arranged in the middle of the tungsten tube, the electronic powder is filled in the inner cavity of the powder tank after the lower tungsten rod and the upper tungsten rod are inserted and arranged at the bottom end of the tungsten tube, the upper tungsten rod is inserted and arranged at the top end of the tungsten tube at this time, the electronic powder is closed into the powder tank in the tungsten tube by the lower tungsten rod and the upper tungsten rod, the chemical reaction of the electronic powder and sodium is avoided, the service life of the sodium lamp is effectively prolonged, and the electrode has simple structure and no powder immersion problem. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the whole structure schematic view of the utility model;

[0015] Figure 2 It is the whole sectional view schematic view of the utility model;

[0016] Figure 3 It is the whole structure explosion drawing of the utility model;

[0017] Figure 4 It is the split schematic view of the lower tungsten rod, the tungsten tube and the upper tungsten rod of the utility model.

[0018] Mark explanation in drawing:

[0019] 1, niobium tube electrode seat;2, lower tungsten rod;3, tungsten tube;4, upper tungsten rod;5, powder tank;7, lower insertion stepped hole;8, upper insertion stepped hole;9, positioning hole;10, insertion stepped column;11, annular positioning protrusion. DETAILED DESCRIPTION

[0020] The technical schemes in the embodiments of the utility model will be clearly and completely described below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments, and all other embodiments obtained by the person skilled in the art without creative labor based on the embodiments in the utility model belong to the protection scope of the utility model.

[0021] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and thus cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it is necessary to explain that, unless otherwise expressly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Embodiment:

[0024] Please refer to Figures 1-4 A novel high-voltage sodium lamp electrode, comprising a niobium tube electrode base 1, a lower tungsten rod 2 is fixedly sleeved at the top of the niobium tube electrode base 1, the outer side of the top end of the lower tungsten rod 2 is fixedly sleeved with a tungsten tube 3, the top end of the tungsten tube 3 is fixedly sleeved with an upper tungsten rod 4, a powder loading groove 5 is arranged in the inside of the tungsten tube 3, and electronic powder is arranged in the inside of the powder loading groove 5.

[0025] Specifically, please refer to Figure 4 The bottom end of the tungsten tube 3 is provided with a lower insertion stepped hole 7, and the top end of the lower tungsten rod 2 is fixedly sleeved into the inner cavity of the lower insertion stepped hole 7.

[0026] In the embodiment, the lower tungsten rod 2 is inserted and mounted onto the lower insertion stepped hole 7 through the cooperation between the lower insertion stepped hole 7 and the lower tungsten rod 2, and the depth of the lower tungsten rod 2 inserted into the lower insertion stepped hole 7 is limited through the abutment between the top surface of the inner cavity of the lower insertion stepped hole 7 and the top surface of the lower tungsten rod 2.

[0027] Specifically, please refer to Figure 4 The top end of the tungsten tube 3 is provided with an upper insertion stepped hole 8, and the bottom end of the upper tungsten rod 4 is fixedly sleeved into the inner cavity of the upper insertion stepped hole 8.

[0028] In the embodiment, the upper insertion stepped hole 8 is inserted and mounted onto the tungsten tube 3 through the cooperation between the upper insertion stepped hole 8 and the upper tungsten rod 4, and the depth of the upper tungsten rod 4 inserted into the upper insertion stepped hole 8 is limited through the abutment between the bottom surface of the inner cavity of the upper insertion stepped hole 8 and the bottom surface of the upper tungsten rod 4.

[0029] Specifically, please refer to Figure 3 The top of the niobium tube electrode seat 1 is provided with a positioning hole 9, and the bottom end of the lower tungsten rod 2 is provided with an insertion stepped column 10, and the bottom end of the insertion stepped column 10 is fixedly sleeved to the inner cavity of the positioning hole 9.

[0030] In this embodiment, the lower tungsten rod 2 is installed on the niobium tube electrode seat 1 through the cooperation between the positioning hole 9 and the insertion stepped column 10, and the position of the lower tungsten rod 2 installed on the niobium tube electrode seat 1 is positioned by the fit between the top surface outside the insertion stepped column 10 and the top surface of the niobium tube electrode seat 1, and the niobium tube electrode seat 1 and the lower tungsten rod 2 can be connected by high-temperature flame melting.

[0031] Specifically, please refer to Figure 1 The outside of the niobium tube electrode seat 1 is provided with an annular positioning protrusion 11.

[0032] In this embodiment, the depth of the niobium tube electrode seat 1 inserted into the arc tube is limited by the annular positioning protrusion 11, and the annular positioning protrusion 11 and the arc tube can be connected by high-temperature flame melting.

[0033] Specifically, please refer to Figure 4 The inner diameter of the lower insertion stepped hole 7 is smaller than the outer diameter of the lower tungsten rod 2, and the inner diameter of the upper insertion stepped hole 8 is smaller than the outer diameter of the upper tungsten rod 4.

[0034] In this embodiment, it is ensured that the top end of the lower tungsten rod 2 can be inserted into the inner cavity of the lower insertion stepped hole 7 with interference, and it is also ensured that the bottom end of the upper tungsten rod 4 can be inserted into the inner cavity of the upper insertion stepped hole 8 with interference, and in addition, the lower tungsten rod 2, the tungsten tube 3 and the upper tungsten rod 4 are connected by stamping technology.

[0035] Working principle: when manufacturing, first, the top end of the lower tungsten rod 2 is inserted into the lower insertion stepped hole 7 at the bottom end of the tungsten tube 3 with interference through the stamping equipment, then the electronic powder is filled into the powder filling groove 5 inside the tungsten tube 3 from the upper insertion stepped hole 8, and then the bottom end of the upper tungsten rod 4 is inserted into the upper insertion stepped hole 8 at the top end of the tungsten tube 3 with interference through the stamping equipment again, the electronic powder in the powder filling groove 5 is closed by the lower tungsten rod 2 and the upper tungsten rod 4, finally the insertion stepped column 10 at the bottom end of the lower tungsten rod 2 is inserted into the positioning hole 9 at the top end of the niobium tube electrode seat 1, and the outside of the top end of the niobium tube electrode seat 1 is heated and melted, so that the lower tungsten rod 2 and the niobium tube electrode seat 1 are connected, at this time, the electrode processed in this way is installed on the arc tube, the high-pressure sodium lamp electrode uses the lower tungsten rod 2 and the upper tungsten rod 4 to close the electronic powder in the powder filling groove 5 in the tungsten tube 3, avoiding the chemical reaction of the electronic powder with sodium, effectively prolonging the service life of the sodium lamp, and in addition, the electrode has the advantages of simple structure and no powder immersion problem.

[0036] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and improvement concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A novel high-pressure sodium lamp electrode comprising a niobium tube electrode base (1), characterized in that: The top of the niobium tube electrode seat (1) is fixedly sleeved with a lower tungsten rod (2), the outer side of the top end of the lower tungsten rod (2) is fixedly sleeved with a tungsten tube (3), the top end of the tungsten tube (3) is fixedly sleeved with an upper tungsten rod (4), the inside of the tungsten tube (3) is provided with a powder loading groove (5), and the inside of the powder loading groove (5) is provided with electronic powder.

2. A novel high pressure sodium lamp electrode according to claim 1, characterized in that: The bottom end of the tungsten tube (3) is provided with a lower plug-in stepped hole (7), and the top end of the lower tungsten rod (2) is fixedly sleeved to the inner cavity of the lower plug-in stepped hole (7).

3. A novel high pressure sodium lamp electrode according to claim 2, characterized in that: The top end of the tungsten tube (3) is provided with an upper plug-in stepped hole (8), and the bottom end of the upper tungsten rod (4) is fixedly sleeved to the inner cavity of the upper plug-in stepped hole (8).

4. A novel high pressure sodium lamp electrode according to claim 1, characterized in that: The top of the niobium tube electrode seat (1) is provided with a positioning hole (9), the bottom end of the lower tungsten rod (2) is provided with a plug-in stepped column (10), and the bottom end of the plug-in stepped column (10) is fixedly sleeved to the inner cavity of the positioning hole (9).

5. A novel high pressure sodium lamp electrode as claimed in claim 1, characterized in that: The outer side of the niobium tube electrode seat (1) is provided with an annular positioning protrusion (11).

6. A novel high pressure sodium lamp electrode according to claim 3, characterized in that: The inner diameter of the lower plug-in stepped hole (7) is smaller than the outer diameter of the lower tungsten rod (2), and the inner diameter of the upper plug-in stepped hole (8) is smaller than the outer diameter of the upper tungsten rod (4).

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