A double-sided needle sampling device

Abstract

A double-sided needle sampling device structural design, in particular a double-sided needle sampling device suitable for transformer oil analysis in power systems, belongs to the technical field of analytical testing instruments. The device is convenient and flexible to operate and use, the double-sided needle is conveniently, simply and firmly fixed, the length of the two ends of the double-sided needle exposed is easy to control, the structure is relatively simple and easy to manufacture, not only improves the accuracy of double-sided needle sampling, but also improves the efficiency of double-sided needle sampling. See Figure 5, screw the outer screw (12) of the fixed handle (14) into the transverse thread hole (5) of the main needle sleeve (1), screw the positioning sleeve (10) into the outer thread (4) of the main needle sleeve (1), and then screw the inner thread (9) of the auxiliary needle sleeve (6) into the outer thread (4) of the main needle sleeve (1) to obtain a double-sided needle sampling device (17) of the present invention.

Description

Technical Field

[0001] The invention relates to a double-sided needle sampling device structure design, in particular to a double-sided needle sampling device suitable for transformer oil analysis in a power system, belonging to the technical field of analytical testing instruments. Background Art

[0002] When taking samples from double-sided needles, it is very difficult to take the double-sided needles directly with hands. At present, two metal plates are usually used to clamp the middle of the double-sided needle and tighten it with four screws. This is more cumbersome and inconvenient to fix. Sometimes it is not pressed firmly, and the exposed length of the two ends of the double-sided needle is difficult to control, and it is also inconvenient to operate and use. Summary of the invention

[0003] The purpose of the present invention is to provide a double-sided needle sampling device which is convenient and flexible to operate and use, has convenient, simple and firm double-sided needle fixation, is easy to adjust the exposed length of both ends of the double-sided needle, has a simple structure and is easy to manufacture.

[0004] To achieve the above object, the technical scheme adopted by the present invention is: a double-sided needle sampling device, characterized in that: a section of metal or a hard round rod is processed into a main needle sleeve, an auxiliary needle sleeve, and a positioning sleeve; the main needle sleeve axis center has a small round hole slightly larger than the diameter of the double-sided needle, one end is conical, and half of the length of the other end has an external thread with a diameter of about two-thirds of the diameter of the round rod, and a transverse thread hole with a depth to the opposite wall of the small round hole near the external thread in the middle; the auxiliary needle sleeve has a round hole with the same diameter as the small round hole of the main needle sleeve in the center , one end is conical, and the other end has an internal thread matching the main needle sleeve; the positioning sleeve has a thread matching the main needle sleeve; a section of metal or a thicker round rod with hardness is used to process the fixed handle, one end has an external screw matching the transverse thread hole of the main needle sleeve, the middle end is a round rod, and the other end is a semi-dumbbell-shaped handle head with knurling; the external screw of the fixed handle is screwed into the transverse thread hole of the main needle sleeve, the positioning sleeve is screwed into the external thread of the main needle sleeve, and then the auxiliary needle sleeve is screwed into the external thread of the main needle sleeve to obtain a double-sided needle sampling device of the present invention.

[0005] The beneficial effects of the present invention are that it is easy and flexible to operate, the double-sided needle is conveniently, simply and firmly fixed, the exposed length of the two ends of the double-sided needle is easy to control, the structure is relatively simple and easy to manufacture, which not only improves the accuracy of double-sided needle sampling, but also improves the efficiency of double-sided needle sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0007] Attached Figure 1-1 This is a schematic front view of the main needle sleeve structure of the present invention.

[0008] Attached Figure 1-2 It is a schematic top view of the main needle sleeve structure of the present invention.

[0009] Attached Figure 2-1 This is a schematic front view of the auxiliary needle sleeve structure of the present invention.

[0010] Attached Figure 2-2 It is a schematic top view of the auxiliary needle sleeve structure of the present invention.

[0011] Attached Figure 3-1 It is a schematic front view of the positioning sleeve structure of the present invention.

[0012] Attached Figure 3-2 It is a schematic top view of the positioning sleeve structure of the present invention.

[0013] Attached Figure 4-1 This is a schematic front view of the fixed handle structure of the present invention.

[0014] Attached Figure 4-2 It is a left side view showing the fixed handle structure of the present invention.

[0015] Attached Figure 5 It is a schematic diagram of the overall structure of the present invention.

[0016] Attached Figure 6 It is a schematic diagram of the overall structure of the present invention in combination with a double-sided needle.

[0017] In the attached figure, 1. main needle sleeve, 2. small round hole, 3. cone type A, 4. external thread, 5. transverse thread hole, 6. auxiliary needle sleeve, 7. round hole, 8. cone type B, 9. internal thread, 10. positioning sleeve, 11. thread, 12. external screw, 13. cone, 14. fixed handle, 15. round rod, 16. handle head, 17. double-sided needle sampling device, 18. double-sided needle, 19. needle A, 20. needle B, 21. knurling DETAILED DESCRIPTION

[0018] The specific implementation of the main needle sleeve of the present invention is shown in the attached Figure 1-1 , Attachment Figure 1-2 A section of metal or a hard round rod is processed into a main needle sleeve (1), a small round hole (2) slightly larger than the diameter of a double-sided needle is drilled in the center of the round rod cross section, one end is processed into a conical shape A (3), half of the length of the other end is processed into an external thread (4) with a diameter of about two-thirds of the diameter of the round rod, and a transverse thread hole (5) is processed in the middle near the external thread (4) to a depth to the opposite wall of the small round hole (2).

[0019] The specific implementation of the auxiliary needle sleeve of the present invention is shown in the attached Figure 2-1 , Attachment Figure 2-2 , using a piece of metal or hardness with processing accessories Figure 1-1 A round bar with the same diameter as the main needle sleeve (1) is processed into an auxiliary needle sleeve (6), and a hole is drilled in the center of the cross section of the round bar to form an auxiliary needle sleeve (6). Figure 1-1A circular hole (7) having the same diameter as the small circular hole (2) of the main needle sleeve (1) is processed into a cone shape B (8) at one end and an inner thread (9) having a depth close to the bottom of the cone shape B (8) and matching the outer thread (4) of the main needle sleeve (1) at the other end.

[0020] The specific implementation of the positioning sleeve of the present invention is shown in the attached Figure 3-1 , Attachment Figure 3-2 , using a piece of metal or hardness with processing accessories Figure 1-1 A round bar with the same diameter as the main needle sleeve (1) is processed into a shorter positioning sleeve (10), and a positioning sleeve (10) is processed at the center of the cross section of the round bar to match the attachment. Figure 1-1 The outer thread (4) of the main needle sleeve (1) is matched with a thread (11) with two ends communicating with each other.

[0021] The specific implementation of the fixed handle of the present invention is shown in the attached Figure 4-1 , Attachment Figure 4-2 , use a piece of metal or a piece of material with a higher hardness than the processing material Figure 1-1 The main needle sleeve (1) is made of a round bar with a larger diameter to form a fixed handle (14), and one end is processed with an attached Figure 1-1 The outer screw (12) matched with the transverse thread hole (5) of the main needle sleeve (1) is processed into a thicker round rod (15) at the middle end, and a cone (13) is processed between the outer screw (12) and the round rod (15) to form a transition. The other end is processed into a semi-dumbbell-shaped handle head (16), and the handle head (16) is knurled (21) around the circumference to increase the resistance during rotation.

[0022] The overall implementation of the present invention is shown in the attached Figure 5 , screw the outer screw (12) of the fixed handle (14) into the transverse thread hole (5) of the main needle sleeve (1), screw the positioning sleeve (10) into the outer thread (4) of the main needle sleeve (1), and then screw the inner thread (9) of the auxiliary needle sleeve (6) into the outer thread (4) of the main needle sleeve (1), thereby obtaining a double-sided needle sampling device (17) of the present invention.

[0023] The overall matching mode of the present invention and the double-sided needle is shown in the attached Figure 6, hold the fixed handle (14), insert the double-sided needle (18) into the small round hole (2) of the main needle sleeve (1) of the double-sided needle sampling device (17), and pass through the round hole (7) of the auxiliary needle sleeve (6); after determining the length of the needle head A (19) at one end of the double-sided needle (18) exposed in the cone shape A (3) of the main needle sleeve (1), rotate the fixed handle (14) to press the double-sided needle (18); after rotating the auxiliary needle sleeve (6) to control the length of the needle head B (20) at this end exposed in the cone shape B (8), rotate the positioning sleeve (10) to lock the auxiliary needle sleeve (6); By holding the fixed handle (14), the sampling of the double-sided needle (18) can be conveniently and accurately controlled. By rotating the fixed handle (14), the length of the needle head A (19) at one end of the double-sided needle (18) exposed in the conical shape A (3) of the main needle sleeve (1) can be adjusted. By rotating the fixed handle (14) in the opposite direction, the double-sided needle (18) can be pressed tightly. By rotating the positioning sleeve (10) and the auxiliary needle sleeve (6), the length of the needle head B (20) at the end exposed in the conical shape B (8) can be controlled. By rotating the positioning sleeve (10), the auxiliary needle sleeve (6) can be locked or unlocked. It can be seen that the present invention is convenient and flexible to operate, the fixing of the double-sided needle is convenient, simple and firm, the length of the two ends of the double-sided needle exposed is easy to control, the structure is relatively simple, and it is easy to manufacture. It not only improves the accuracy of double-sided needle sampling, but also improves the efficiency of double-sided needle sampling.

Claims

1. A method for using a double-sided needle sampling auxiliary device, characterized in that: A section of metal or a round rod with hardness is used to process the main needle sleeve, the auxiliary needle sleeve and the positioning sleeve; the main needle sleeve axis center has a small round hole slightly larger than the diameter of the double-sided needle, one end is conical, and the other end has an outer thread with a diameter of about two-thirds of the diameter of the round rod at half the length, and there is a transverse thread hole with a depth to the opposite wall of the small round hole near the outer thread in the middle; the auxiliary needle sleeve has a round hole with the same diameter as the small round hole in the center, one end is conical, and the other end has an inner thread matching the main needle sleeve; the positioning sleeve has threads that are connected at both ends matching the main needle sleeve; a section of metal or a thicker round rod with hardness is used to process the fixed handle, one end has an outer screw matching the transverse thread hole of the main needle sleeve, the middle end is a round rod, and the other end is a semi-dumbbell-shaped handle head with knurling; the outer screw of the fixed handle is screwed into the transverse thread hole of the main needle sleeve, the positioning sleeve is screwed into the outer thread of the main needle sleeve, and then the auxiliary needle sleeve is screwed into the outer thread of the main needle sleeve; Hold the fixed handle and insert the double-sided needle into the small round hole of the main needle sleeve of the double-sided needle sampling auxiliary device. Through the round hole of the auxiliary needle sleeve, determine the exposed length of the needle A at one end of the double-sided needle in the cone shape A of the main needle sleeve, rotate the fixed handle to press the double-sided needle, rotate the auxiliary needle sleeve to control the exposed length of the needle B at this end in the cone shape B, and then rotate the positioning sleeve to lock the auxiliary needle sleeve.

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