Constant-pressure oil sample extraction device

Abstract

The utility model provides a constant pressure oil sample extraction device which comprises a conveying line, a transformer, a vertical frame, a lifting rod, a power mechanism and a sampler, a conveying roller is arranged in the conveying line, the transformer is placed on the conveying roller, the vertical frame is fixedly arranged on the upper side of the conveying line, a fixing plate is fixedly arranged on the inner side of the vertical frame, and the lifting rod is arranged on the fixing plate. The fixing plate comprises a fixing part and an extending part, and the fixing part of the fixing plate is arranged on the vertical frame. According to the scheme, an oil sampling tool is improved, and the lifting rod is used for driving the sampler to sample in the transformer, so that the oil sampling qualification rate is greatly improved, meanwhile, a tester can perform operation by a single person, the operation is simple, the labor cost is reduced, the oil sampling efficiency is improved, and the transformer oil sampling problem is effectively solved; the sampling process of the sampler is shortened and the sampling efficiency of workers is improved in a variable-speed lifting manner.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power construction, in particular to a constant pressure oil sample extraction device. Background Art

[0002] With the increase of voltage level, the requirements for various technical indicators of transformer installation, operation and maintenance are also increasing. The quality of transformer oil will affect whether the transformer can operate normally, and even endanger the safe and stable operation of the transformer. Therefore, transformer oil quality monitoring is particularly important during the installation and operation of the transformer. Since the oil sample should be representative of the oil in the equipment itself, sampling in dead corners where the oil circulation is not sufficient should be avoided. Generally, samples should be taken from the sampling valve at the bottom of the equipment. In special cases, samples can be taken from different sampling locations. The results are mainly used for key on-site test items for transformer oil sampling during the installation, handover and maintenance of large transformers, to ensure the pass rate of large transformer oil sampling and ensure the safe and reliable operation of the equipment. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a constant pressure oil sample extraction device, which solves the problems raised in the above background technology.

[0005] (II) Technical solution

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a constant pressure oil sample extraction device, including a conveying line, a transformer, a stand, a lifting rod, a power mechanism and a sampler, the conveying line is provided with a conveying roller, the transformer is placed on the conveying roller, the stand is fixedly arranged on the upper side of the conveying line, a fixing plate is fixedly arranged on the inner side of the stand, the fixing plate includes a fixing part and an extension part, the fixing part of the fixing plate is arranged on the stand, a lifting hole is opened in the extension part of the fixing plate, the lifting rod is slidably arranged in the lifting hole, the power mechanism is arranged between the lifting rod and the stand, the power mechanism is used to make the lifting rod be located in the lifting hole for variable speed lifting, and the sampler is fixedly arranged at the lower end of the lifting rod.

[0007] Preferably, the sampler is located above the moving path of the transformer.

[0008] Preferably, the power mechanism comprises a driving member, a swing arm and a lifting block, the driving member is arranged on the fixed plate, the swing arm is arranged on the front side of the driving member, the swing arm is hinged to the fixed plate, a limiting slide groove is provided in the swing arm, a swing rod is fixedly provided on the side of the swing arm away from the driving member, the lifting block is fixedly provided on the outer circular surface of the lifting rod, a swing rod slide groove is provided in the lifting block, and the swing rod extends into the swing rod slide groove.

[0009] Preferably, the driving member includes a driving disk and a driving rod, the driving disk is rotatably disposed on the fixed plate, the driving rod is fixedly disposed on a side of the driving disk away from the axis, and the driving rod extends into the limiting sliding groove.

[0010] Preferably, the length of the swing rod slide groove is greater than the diameter of the driving rod.

[0011] (III) Beneficial effects

[0012] The utility model provides a constant pressure oil sample extraction device, which has the following beneficial effects:

[0013] 1. This scheme improves the oil sampling tool and uses a lifting rod to drive the sampler to sample inside the transformer, which greatly improves the oil sampling pass rate. At the same time, the test personnel can operate it alone, which is simple to operate, reduces labor costs and improves the oil sampling efficiency. It effectively solves the transformer oil sampling problem, and shortens the sampling process of the sampler by variable speed lifting and lowering, thereby improving the sampling efficiency of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0017] In the figure: 11, conveyor line; 12, conveyor roller; 13, transformer; 14, stand; 15, fixed plate; 16, lifting hole; 17, drive disk; 18, drive rod; 19, swing arm; 20, limit slide; 21, swing rod; 22, lifting rod; 23, lifting block; 24, swing rod slide; 25, sampler. DETAILED DESCRIPTION

[0018] The utility model provides a constant pressure oil sample extraction device, such as Figure 1-3As shown, it includes a conveyor line 11, a transformer 13, a stand 14, a lifting rod 22, a power mechanism and a sampler 25. A conveyor roller 12 is provided in the conveyor line 11, and the transformer 13 is placed on the conveyor roller 12. The stand 14 is fixedly arranged on the upper side of the conveyor line 11. A fixed plate 15 is fixedly arranged on the inner side of the stand 14. The fixed plate 15 includes a fixed portion and an extension portion. The fixed portion of the fixed plate 15 is arranged on the stand 14. A lifting hole 16 is opened in the extension portion of the fixed plate 15. The lifting rod 22 is slidably arranged in the lifting hole 16. The power mechanism is arranged between the lifting rod 22 and the stand 14. The power mechanism is used to make the lifting rod 22 located in the lifting hole 16 for variable speed lifting. The sampler 25 is fixedly arranged at the lower end of the lifting rod 22.

[0019] The sampler 25 is located above the moving path of the transformer 13 .

[0020] like Figure 3 As shown, the power mechanism comprises a driving member, a swing arm 19 and a lifting block 23, the driving member is arranged on the fixed plate 15, the swing arm 19 is arranged on the front side of the driving member, the swing arm 19 is hinged on the fixed plate 15, a limiting slide groove 20 is provided in the swing arm 19, a swing rod 21 is fixedly provided on the side of the swing arm 19 away from the driving member, the lifting block 23 is fixedly provided on the outer cylindrical surface of the lifting rod 22, a swing rod slide groove 24 is provided in the lifting block 23, and the swing rod 21 extends into the swing rod slide groove 24.

[0021] The driving member includes a driving disk 17 and a driving rod 18. The driving disk 17 is rotatably disposed on the fixed plate 15. The driving rod 18 is fixedly disposed on the driving disk 17 on a side away from the axis. The driving rod 18 extends into the limiting slide groove 20. The length of the swing rod slide groove 24 is greater than the diameter of the driving rod 18.

[0022] The driving plate 17 drives the driving rod 18 to perform circular motion by rotating, and the motion cycle of the driving rod 18 is divided into a cycle on the side close to the hinge point of the swing arm 19 and a cycle on the side away from the hinge point of the swing arm 19. When the driving rod 18 is in the cycle on the side away from the hinge point of the swing arm 19, the driving rod 18 is located in the limiting slide 20 to drive the swing arm 19 to swing downward, and the swing arm 19 drives the swing rod 21 to swing synchronously. The swing rod 21 is located in the swing rod slide 24 and drives the lifting rod 22 to slide downward through the lifting block 23. The lifting rod 22 drives the sampler 25 to move the transformer 13 The transformer oil in the transformer 13 is collected. When the driving rod 18 is located in a period close to the hinge point of the swing arm 19, the driving rod 18 is located in the limiting slide groove 20 and drives the swing arm 19 to swing upward. The swing arm 19 drives the swing rod 21 to swing synchronously. The swing rod 21 is located in the swing rod slide groove 24 and drives the lifting rod 22 to slide upward through the lifting block 23. The lifting rod 22 drives the sampler 25 to take out the transformer oil in the transformer 13. Since the distance between the driving rod 18 and the hinge point of the swing arm 19 is close at this time, the swing arm 19 swings upward faster than it swings downward.

[0023] When the swing arm 19 drives the swing rod 21 to swing, the swing rod 21 is located in the swing rod sliding groove 24 and slides adaptively along the length direction.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant pressure oil sample extraction device, characterized in that: The invention comprises a conveyor line (11), a transformer (13), a stand (14), a lifting rod (22), a power mechanism and a sampler (25), wherein a conveyor roller (12) is arranged inside the conveyor line (11), the transformer (13) is placed on the conveyor roller (12), the stand (14) is fixedly arranged on the upper side of the conveyor line (11), a fixing plate (15) is fixedly arranged inside the stand (14), the fixing plate (15) comprises a fixing portion and an extending portion, the fixing plate (15) comprises a fixing portion and an extending portion, and the fixing plate (15) comprises a fixing portion and an extending portion. The fixing portion of the plate (15) is arranged on the stand (14); a lifting hole (16) is provided in the extension portion of the fixing plate (15); the lifting rod (22) is slidably arranged in the lifting hole (16); the power mechanism is arranged between the lifting rod (22) and the stand (14); the power mechanism is used to make the lifting rod (22) located in the lifting hole (16) perform variable speed lifting; and the sampler (25) is fixedly arranged at the lower end of the lifting rod (22).

2. A constant pressure oil sample extraction device according to claim 1, characterized in that: The sampler (25) is located above the moving path of the transformer (13).

3. A constant pressure oil sample extraction device according to claim 1, characterized in that: The power mechanism comprises a driving member, a swing arm (19) and a lifting block (23), wherein the driving member is arranged on the fixed plate (15), the swing arm (19) is arranged on the front side of the driving member, the swing arm (19) is hinged on the fixed plate (15), a limiting slide groove (20) is provided in the swing arm (19), a swing rod (21) is fixedly provided on the side of the swing arm (19) away from the driving member, the lifting block (23) is fixedly provided on the outer circumferential surface of the lifting rod (22), a swing rod slide groove (24) is provided in the lifting block (23), and the swing rod (21) extends into the swing rod slide groove (24).

4. A constant pressure oil sample extraction device according to claim 3, characterized in that: The driving member comprises a driving disk (17) and a driving rod (18); the driving disk (17) is rotatably mounted on the fixing plate (15); the driving rod (18) is fixedly mounted on a side of the driving disk (17) away from the axis; and the driving rod (18) extends into the limiting sliding groove (20).

5. A constant pressure oil sample extraction device according to claim 4, characterized in that: The length of the swing rod sliding groove (24) is greater than the diameter of the driving rod (18).

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