Voltage probe for electric energy quality detection equipment

Abstract

The utility model discloses a voltage probe for electric energy quality detection equipment, which comprises a metal shell, the surface of the metal shell is sleeved with a buffer cylinder, one end of the metal shell is fixedly provided with a clamping pipe, and the surface of the clamping pipe is provided with a buckle. When the voltage needle head and the current needle cylinder are used for a long time to cause serious external abrasion, the current needle cylinder can be taken out and replaced only by using an existing tool to sink the receding hole inwards to be separated from the buckle, meanwhile, the nut sleeve is rotated to loosely and smoothly pull out the voltage needle head, and then the voltage needle head is replaced by a new one. As the voltage needle head and the binding clamping tube are integrated, a new voltage needle head can be sleeved on the surface of the needle rod, and then the nut sleeve is screwed and tightened to fix the voltage needle head at one end of the needle rod, so that the whole body is prevented from being replaced, the cost is saved, the resources are saved, and the operation of original basic parts is not influenced; and the flexibility and the reliability of the device are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of current and voltage probes, in particular to a voltage probe for power quality detection equipment. Background Art

[0002] The power quality detection equipment uses current and voltage probes, including the detection, analysis and evaluation of voltage quality and current quality as well as power supply quality and power consumption quality, so as to analyze and evaluate the quality and problems of electric energy. The test probe used is an efficient and reliable device. The test probe can accurately measure the current, voltage and frequency of the circuit board and other parameters to ensure the normal operation of the electronic equipment. The existing test probes are mostly plated with alloys on the surface of the probes, such as beryllium copper nickel plating or phosphor copper nickel plating. After the probes are used many times, the alloy layer on the surface will be worn away, which increases the resistance of the probes and affects the detection data. Generally, the waste probes are directly pulled out and replaced with new probes. Since only the surface alloy layer of the probe head is worn, the needle rod body is intact, so it is a waste of resources. For this reason, a voltage probe for power quality detection equipment is proposed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0004] To this end, the technical solution adopted in this utility model is:

[0005] A voltage probe for power quality detection equipment comprises a metal shell, a buffer tube is sleeved on the surface of the metal shell, a clamping tube is fixedly installed on one end of the metal shell, a buckle is provided on the surface of the clamping tube, a current syringe is clamped on the surface of the buckle, an insulating tube is fixedly installed inside the metal shell, a needle tube is fixedly sleeved on the inside of the insulating tube, a second spring is placed inside the needle tube, a positioning block is fitted on one end of the second spring, a needle rod is fixedly installed on one end of the positioning block, a constricting clamping tube is sleeved on the surface of the needle rod, a threaded strip is provided on the surface of the constricting clamping tube, a voltage needle is fixedly connected to one end of the constricting clamping tube, and a nut sleeve is threadedly connected to the surface of the constricting clamping tube.

[0006] Preferably, a first spring is sleeved on the surface of the metal shell, and the first spring is placed between the clamping tube and the buffer cylinder.

[0007] Preferably, a limiting ring is fixedly mounted on the surface of the metal shell, and one end of the buffer cylinder abuts against the limiting ring.

[0008] Preferably, a clearance hole is provided on the surface of the current syringe, and the top end of the buckle is buckled in the clearance hole.

[0009] Preferably, a groove is provided in the middle of the needle tube, and the positioning block is arranged at one end of the groove.

[0010] Preferably, the interior of the needle tube is sleeved with the needle rod, and the interior of the needle tube is sleeved with the contraction clamp tube.

[0011] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0012] In the utility model, when the voltage needle and the current syringe are severely worn due to long-term use, it is only necessary to use existing tools to make the give way hole concave inwards to disengage the buckle, and the current syringe can be taken out and replaced. At the same time, the nut sleeve is rotated to loosen the contraction clamp tube, and the voltage needle is smoothly pulled out, and then a new voltage needle is replaced. Since the voltage needle and the contraction clamp tube are originally integrated, the new voltage needle can be sleeved on the surface of the needle rod, and then the nut sleeve is rotated and tightened to fix the voltage needle to one end of the needle rod, thereby avoiding the need to replace the entire thing, which not only saves expenses, but also saves resources, and will not affect the operation of the original basic parts, thereby realizing the flexibility and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model;

[0014] Figure 2 A schematic diagram of a metal housing according to an embodiment of the utility model;

[0015] Figure 3 This is a schematic diagram of an insulating tube according to an embodiment of the utility model;

[0016] Figure 4 A schematic diagram of a needle tube according to an embodiment of the utility model;

[0017] Figure 5 A schematic diagram of a second spring in one embodiment of the utility model;

[0018] Figure 6 This is a schematic diagram of a needle bar according to an embodiment of the utility model.

[0019] Reference numerals:

[0020] 1. Metal shell; 2. Limiting ring; 3. Buffer tube; 4. First spring; 5. Snap tube; 6. Buckle; 7. Current syringe; 8. Clearance hole; 9. Insulating tube; 10. Needle tube; 11. Groove; 12. Second spring; 13. Block; 14. Needle rod; 15. Clamping tube; 1501. Threaded strip; 16. Voltage needle; 17. Nut sleeve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0022] A voltage probe for power quality detection equipment provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0023] Example:

[0024] Combination Figure 1-6 As shown, the utility model provides a voltage probe for power quality detection equipment, including a metal shell 1, which is mainly made of brass to protect internal parts from environmental influences, has excellent conductivity, excellent corrosion resistance and is easy to cut. A buffer tube 3 is sleeved on the surface of the metal shell 1, and an external device is connected to the buffer tube 3. A limit ring 2 is fixedly installed on the surface of the metal shell 1, and one end of the buffer tube 3 abuts against the limit ring 2 to prevent the buffer tube 3 from falling off, so that the external connection device cannot install the probe. A clamping tube 5 is fixedly installed on one end of the metal shell 1, and a first spring 4 is sleeved on the surface of the metal shell 1. The first spring 4 is placed between the clamping tube 5 and the buffer tube 3. Under the action of the first spring 4, the buffer tube 3 can be stably sleeved on the surface of the metal shell 1. The figure shows the position of the metal shell 1 in a free state. When the external device is fixedly installed with the buffer tube 3, the buffer tube 3 can slide back and forth continuously for buffering when the probe is working to prevent parts from being damaged due to mechanical settings. A buckle 6 is provided on the surface of the buckle 6, and a current syringe 7 is clamped on the surface of the buckle 6. A clearance hole 8 is provided on the surface of the current syringe 7, and the top of the buckle 6 is buckled in the clearance hole 8. When using a tool, the buckle 6 can be pushed back into the clamping tube 5 to take out the current syringe 7, which is convenient for replacement. Different styles of current syringes 7 can be replaced as needed, which is more convenient for testing. An insulating tube 9 is fixedly installed inside the metal shell 1. When testing, the current will be completely isolated to avoid inaccurate testing caused by leakage and prevent the occurrence of safety hazards. A needle tube 10 is fixedly sleeved inside the insulating tube 9. The interior of the needle tube 10 is a hollow structure, which is convenient for placing small parts. The needle tube 10 is mainly made of copper, which is better conductive and reduces resistance. A second spring 12 is placed inside the needle tube 10, and a clamping block 13 is attached to one end of the second spring 12. A groove 11 is provided in the middle of the needle tube 10, and the clamping block 13 is arranged at one end of the groove 11. A needle rod 14 is fixedly installed at one end of the clamping block 13.

[0025] Among them, a blocking block 13 is fixedly installed at one end of the needle rod 14 in order to separate the blocking block 13 in a section inside the groove 11. Under the action of the second spring 12, when the needle rod 14 is squeezed and pushed toward a section equipped with the second spring 12, it will be buffered. When it is not squeezed, the needle rod 14 will be reset to avoid jamming and affecting the work of the probe. A constriction clamp tube 15 is sleeved on the surface of the needle rod 14, and the interior of the needle tube 10 is sleeved on the needle rod 14. The interior of the needle tube 10 is sleeved on the constriction clamp tube 15. A threaded strip 1501 is provided on the surface of the constriction clamp tube 15, and a voltage needle head 16 is fixedly connected to one end of the constriction clamp tube 15. A nut sleeve 17 is threadedly connected to the surface of the constriction clamp tube 15. If you want to fix the constriction clamp tube 15 to one end of the needle rod 14, you only need to rotate the nut sleeve 17 to shrink the constriction clamp tube 15, so that the constriction clamp tube 15 is tightly fitted to the needle rod 14 to complete the fixation, so that the voltage needle head 16 can work with the current syringe 7.

[0026] The working principle and use process of the utility model are as follows: first, the buckle 6 engaged in the clearance hole 8 is squeezed inward, and the current syringe 7 to be replaced can be smoothly slid and removed from the outside of the clamping tube 5. At this time, the nut sleeve 17 is rotated so that the contraction clamping tube 15 is no longer tightened and fitted on the surface of the needle rod 14. At this time, the contraction clamping tube 15 is pulled out, and the voltage needle head 16 to be replaced at one end of the contraction clamping tube 15 is removed together, and then the new voltage needle head 16 is inserted into the original position, and the nut sleeve 17 is rotated and tightened again. Without further explanation, similarly, the clearance hole 8 of the new current syringe 7 is aligned with the buckle 6 and slid and pushed until the buckle 6 is engaged with the clearance hole 8 to achieve replacement.

[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A voltage probe for power quality detection equipment, comprising a metal housing (1), characterized in that: The surface of the metal shell (1) is sleeved with a buffer tube (3); one end of the metal shell (1) is fixedly mounted with a clamping tube (5); the surface of the clamping tube (5) is provided with a buckle (6); the surface of the buckle (6) is clamped with a current syringe (7); an insulating tube (9) is fixedly mounted inside the metal shell (1); a needle tube (10) is fixedly sleeved inside the insulating tube (9); a second spring (12) is placed inside the needle tube (10); one end of the second spring (12) is fitted with a clamping block (13); one end of the clamping block (13) is fixedly mounted with a needle rod (14); a surface of the needle rod (14) is sleeved with a contraction clamping tube (15); a surface of the contraction clamping tube (15) is provided with a threaded strip (1501); one end of the contraction clamping tube (15) is fixedly connected with a voltage needle head (16); the surface of the contraction clamping tube (15) is threadedly connected with a nut sleeve (17).

2. A voltage probe for power quality detection equipment according to claim 1, characterized in that: A first spring (4) is sleeved on the surface of the metal shell (1), and the first spring (4) is placed between the clamping tube (5) and the buffer cylinder (3).

3. The voltage probe for power quality detection equipment according to claim 1, characterized in that: A limiting ring (2) is fixedly mounted on the surface of the metal shell (1), and one end of the buffer cylinder (3) abuts against the limiting ring (2).

4. The voltage probe for power quality detection equipment according to claim 1, characterized in that: A clearance hole (8) is provided on the surface of the current syringe (7), and the top end of the buckle (6) is buckled into the clearance hole (8).

5. The voltage probe for power quality detection equipment according to claim 1, characterized in that: A groove (11) is provided in the middle of the needle tube (10), and the positioning block (13) is arranged at one end of the groove (11).

6. The voltage probe for power quality detection equipment according to claim 1, characterized in that: The interior of the needle tube (10) is sleeved with the needle rod (14), and the interior of the needle tube (10) is sleeved with the contraction clamp tube (15).

Images