Converter transformer oil taking port external leading device

Abstract

The utility model belongs to the technical field of converter transformer safety, and particularly relates to a converter transformer oil taking port external leading device which comprises an oil sampling cabinet body, a plurality of transition pipe joints, a plurality of external leading pipes and a plurality of far-end oil sampling valves, the transition pipe joints, the external leading pipes and the far-end oil sampling valves are arranged in a matched mode, and the oil sampling cabinet body is located outside a sound insulation cover of a converter transformer. The far-end oil sampling valves of each group are mounted in the oil sampling cabinet body, one end of the transition pipe joint of each group is connected with a corresponding original sampling valve of the converter transformer, and the other end of the transition pipe joint of each group is communicated with one end of the outer guide pipe of the same group; and the other end of the outer guide pipe of each group extends out of the acoustic enclosure of the converter transformer, then enters the oil sampling cabinet body and is communicated with the far-end oil sampling valve of the same group. According to the utility model, the function of sampling at a place far away from the converter transformer in daily life can be realized, and manual sampling in the acoustic enclosure is not needed, so that the operation of operation and maintenance personnel is more convenient, faster and safer, the structure is simple, and the use is reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter transformer safety, and particularly relates to an external lead-out device for an oil sampling port of a converter transformer. Background Art

[0002] The converter transformer is one of the important devices in a high-voltage direct-current transmission system. When the converter transformer has an abnormality and needs to be monitored during operation, it is necessary to frequently take oil samples for analysis. At present, the oil sampling of the converter transformer is still manually carried out at close range, which increases the personal safety risk of the oil sampling personnel. Moreover, at present, the sampling ports of the converter transformers in operation are generally located inside the sound insulation hood, and it is necessary for personnel to enter the sound insulation hood to take samples, which is very cumbersome. Therefore, it is particularly important and of great significance to lead the oil sampling port of the converter transformer to the outside of the sound insulation hood. Content of the Utility Model

[0003] Aiming at the problem that the oil sampling of the converter transformer can generally only be carried out at close range at present, the purpose of the utility model is to provide an external lead-out device for an oil sampling port of a converter transformer.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] An external lead-out device for an oil sampling port of a converter transformer comprises an oil sampling cabinet body and a plurality of groups of cooperatively arranged transition pipe joints, external lead-out pipes and distal oil sampling valves. The oil sampling cabinet body is located outside the sound insulation hood of the converter transformer.

[0006] Each group of the distal oil sampling valves is installed in the oil sampling cabinet body. One end of each group of the transition pipe joints is respectively connected with a corresponding original sampling valve of the converter transformer. The other end of each group of the transition pipe joints is communicated with one end of the external lead-out pipe of the same group. The other end of each group of the external lead-out pipes extends out of the sound insulation hood of the converter transformer and then enters the oil sampling cabinet body and is communicated with the distal oil sampling valve of the same group.

[0007] At the opening of one end of each group of the external lead pipes, external thread A is provided, and at the opening of the other end of each group of the external lead pipes, external thread B is provided; at one end of each group of the external lead pipes, a corresponding thread joint A and a connecting flange A are provided, and at the other end of each group of the external lead pipes, a corresponding thread joint B and a connecting flange B are provided. A liquid through-hole is provided in the middle of each of the connecting flanges A and B; each of the thread joints A is welded at the liquid through-hole of the corresponding connecting flange A. Each of the thread joints A has an inner hole communicating with the liquid through-hole of the corresponding connecting flange A. An internal thread A is provided on the inner hole wall of each of the thread joints A, and the internal thread A of each of the thread joints A is connected to the external thread A of a corresponding group of external lead pipes; each of the thread joints B is welded at the liquid through-hole of the corresponding connecting flange B. Each of the thread joints B has an inner hole communicating with the liquid through-hole of the corresponding connecting flange B. An internal thread B is provided on the inner hole wall of each of the thread joints B, and the internal thread B of each of the thread joints B is connected to the external thread B of a corresponding group of external lead pipes.

[0008] A stainless steel hose is sleeved outside each group of the external lead pipes. One end opening of each of the stainless steel hoses is provided with an internal thread C, and the other end opening of each of the stainless steel hoses is provided with an internal thread D. An external thread C matching the internal thread C of the corresponding stainless steel hose is provided on the outer peripheral surface of each of the thread joints A, and an external thread D matching the internal thread D of the corresponding stainless steel hose is provided on the outer peripheral surface of each of the thread joints B. Each of the stainless steel hoses and the external lead pipes inside the stainless steel hoses extend out from the sound insulation cover of the converter transformer and enter the oil sampling cabinet body.

[0009] A three-way pipe is communicated between the other end of each group of the transition pipe joints and one end of the external lead pipes of the same group. Each of the three-way pipes has three interfaces. The first interface of each of the three-way pipes is communicated with the other end of the corresponding transition pipe joint, the second interface of each of the three-way pipes is communicated with one end of the corresponding external lead pipe, and a local sampling valve is connected to the third interface of each of the three-way pipes.

[0010] A plurality of remote oil sampling valve fixing seats are provided on the inner wall of the oil sampling cabinet body. Each of the remote oil sampling valves is fixedly connected to a corresponding remote oil sampling valve fixing seat by screws.

[0011] A cabinet support for supporting the oil sampling cabinet body is provided below the oil sampling cabinet body.

[0012] The oil sampling cabinet body and the cabinet support are fixedly connected by bolts.

[0013] Inside the cabinet support, there is an oil waste pot support groove, and an oil waste pot is placed on the oil waste pot support groove.

[0014] The oil waste pot is made of transparent plastic material.

[0015] On the outer surface of the oil waste pot, there are scale lines for indicating the amount of oil contained in the oil waste pot.

[0016] The advantages and positive effects of the present utility model are as follows:

[0017] With the provision of the oil sampling cabinet body, several groups of cooperating transition pipe joints, external lead pipes, and distal oil sampling valves, the present utility model can achieve the function of daily sampling away from the converter transformer, eliminating the need for manual sampling inside the sound insulation hood, making the operation of maintenance personnel more convenient, faster, and safer. The structure is simple and reliable in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the usage state of the present utility model;

[0019] Figure 2 It is a schematic diagram of the setting structure of one group of the transition pipe joint, external lead pipe, and distal oil sampling valve of the present utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the oil sampling cabinet body of the present utility model;

[0021] Figure 4 It is a schematic diagram of the setting structure of the oil sampling cabinet body and the cabinet support of the present utility model.

[0022] In the figure: 1 is the oil sampling cabinet body, 2 is the transition pipe joint, 3 is the external lead pipe, 4 is the distal oil sampling valve, 5 is the threaded joint A, 6 is the connecting flange A, 7 is the threaded joint B, 8 is the connecting flange B, 9 is the stainless steel hose, 10 is the three-way pipe, 11 is the on-site sampling valve, 12 is the distal oil sampling valve fixing seat, 13 is the cabinet support, 14 is the oil waste pot support groove, 15 is the oil waste pot;

[0023] 001 is the converter transformer, and 0011 is the original sampling valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further details the present utility model in conjunction with the attached Figures 1-4 drawings.

[0025] An external lead device for the oil sampling port of a converter transformer, as Figures 1-4 shown. In this embodiment, it includes an oil sampling cabinet body 1 and three groups of cooperating transition pipe joints 2, external lead pipes 3, and distal oil sampling valves 4. The oil sampling cabinet body 1 is located outside the sound insulation hood of the converter transformer 001. To clearly show the specific structure of the present utility model,Figure 1 Other parts such as the sound insulation cover outside the converter transformer 001 are hidden. The specific number of sets of the transition pipe joints 2, the external lead pipes 3, and the distal oil sampling valves 4 is set according to the number of the original sampling valves 0011 of the referenced converter transformer 001.

[0026] The distal oil sampling valve 4 of each group is installed in the oil sampling cabinet 1. One end of the transition pipe joint 2 of each group is respectively connected to a corresponding original sampling valve 0011 of the converter transformer 001 through threads. The other end of the transition pipe joint 2 of each group is communicated with one end of the external lead pipe 3 of the same group. The other end of the external lead pipe 3 of each group extends out of the sound insulation cover of the converter transformer 001, then enters the oil sampling cabinet 1 and is communicated with the distal oil sampling valve 4 of the same group. In this embodiment, the external lead pipe 3 is made of copper pipe, which has good ductility and is convenient for processing. In this embodiment, the distal oil sampling valves 4 are all commercially available manual valves or valve products. The distal sampling can be directly carried out by opening the distal oil sampling valve 4, without the need for manual personnel to take samples close to the converter transformer 001 inside the sound insulation cover, which is convenient for the operation and maintenance personnel to take samples.

[0027] Specifically, as Figure 2 shown, in this embodiment, external threads A are provided at the openings at one end of the external lead pipe 3 of each group, and external threads B are provided at the openings at the other end of the external lead pipe 3 of each group; thread joints A 5 and connecting flanges A 6 are correspondingly provided at one end of the external lead pipe 3 of each group, and thread joints B 7 and connecting flanges B 8 are correspondingly provided at the other end of the external lead pipe 3 of each group. Liquid passing ports are provided in the middle of each connecting flange A 6 and each connecting flange B 8. The liquid passing ports of the connecting flanges A 6 and the connecting flanges B 8 are used to allow oil to enter or flow out of the external lead pipe 3; each thread joint A 5 is welded at the liquid passing port of the corresponding connecting flange A 6. Each thread joint A 5 has an inner hole communicated with the liquid passing port of the corresponding connecting flange A 6. Internal threads A are provided on the inner hole wall of each thread joint A 5, and the internal threads A of each thread joint A 5 are connected to the external threads A of the corresponding group of external lead pipes 3; each thread joint B 7 is welded at the liquid passing port of the corresponding connecting flange B 8. Each thread joint B 7 has an inner hole communicated with the liquid passing port of the corresponding connecting flange B 8. Internal threads B are provided on the inner hole wall of each thread joint B 7, and the internal threads B of each thread joint B 7 are connected to the external threads B of the corresponding group of external lead pipes 3, which is convenient and easy to connect. Sealing rings can be provided at the joints between each joint and other structures to ensure the sealing effect, and the method of setting the sealing rings also adopts the existing technology.

[0028] Specifically, as Figure 2As shown in the figure, in this embodiment, a stainless steel hose 9 is sleeved outside each external lead pipe 3 of each group. One end of each stainless steel hose 9 is provided with an internal thread C at the opening, and the other end of each stainless steel hose 9 is provided with an internal thread D at the opening. An external thread C that mates with the internal thread C of the corresponding stainless steel hose 9 is provided on the outer peripheral surface of each threaded joint A 5, and an external thread D that mates with the internal thread D of the corresponding stainless steel hose 9 is provided on the outer peripheral surface of each threaded joint B 7. Each stainless steel hose 9 and the external lead pipe 3 inside the stainless steel hose 9 extend out from the sound insulation cover of the converter transformer 001 and enter the oil sampling cabinet 1 together. By providing the stainless steel hose 9 outside the external lead pipe 3, the external lead pipe 3 can be effectively protected from corrosion damage.

[0029] Specifically, as Figure 1 and Figure 2 shown in the figure, in this embodiment, a tee 10 is connected between the other end of each transition pipe joint 2 of each group and one end of the external lead pipe 3 of the same group. Each tee 10 has three interfaces. The first interface of each tee 10 can be connected to the other end of the corresponding transition pipe joint 2 through a flange structure. The second interface of each tee 10 can be connected to one end of the corresponding external lead pipe 3 by connecting with the connecting flange A 6. A local sampling valve 11 is connected to the third interface of each tee 10. In this embodiment, the local sampling valves 11 are all commercially available manual valves or valve products. By providing the tee 10 and the local sampling valve 11, it is possible to directly sample from the local sampling valve 11 near the converter transformer 001 while realizing the function of sampling at a remote location, which is more convenient for the operation and maintenance personnel.

[0030] Specifically, as Figure 3 shown in the figure, in this embodiment, three remote oil sampling valve fixing seats 12 are correspondingly provided on the inner wall of the oil sampling cabinet 1. Each remote oil sampling valve 4 is fixedly connected to a corresponding remote oil sampling valve fixing seat 12 through screws, which is convenient for installation. In this embodiment, the oil sampling cabinet 1 itself is designed and manufactured using existing technologies, and the protection level is set to IP55, which can play a role in sampling in a relatively enclosed space and effectively preventing pollution during sampling.

[0031] Specifically, as Figure 4As shown in the figure, a cabinet support 13 for supporting the oil sampling cabinet 1 is provided below the oil sampling cabinet 1 in this embodiment. The oil sampling cabinet 1 is fixedly connected to the cabinet support 13 by bolts. An oil waste pot support groove 14 is installed inside the cabinet support 13, and an oil waste pot 15 is placed on the oil waste pot support groove 14. The oil waste pot 15 is made of transparent plastic material, and a scale line for indicating the amount of oil contained in the oil waste pot 15 is provided on the outer surface of the oil waste pot 15. The oil waste pot 15 is usually placed on the oil waste pot support groove 14. When it is necessary to take a sample from the remote oil sampling valve 4 in the oil sampling cabinet 1, the oil waste pot 15 can be taken out from the oil waste pot support groove 14 and placed into the oil sampling cabinet 1, and the discharged waste oil can be received from the remote oil sampling valve 4. After discharging the waste oil in the dead oil area, the oil sample can be officially taken to ensure reliable sampling. The amount of oil in the dead oil area can be calculated according to the length of the on-site external lead pipe 3, etc. The scale line set on the oil waste pot 15 enables on-site operation and maintenance personnel to intuitively know how much the discharge amount of each remote oil sampling valve 4 is and whether it meets the standard for taking the main body oil sample; at the same time, the oil waste pot 15 can centrally collect the waste transformer oil, which also achieves the purpose of environmental protection.

Claims

1. A converter transformer oil inlet external lead device, characterized in that: It comprises an oil sampling cabinet (1) and a plurality of sets of transition pipe joints (2), external lead pipes (3), and a remote oil sampling valve (4) which are arranged in a coordinated manner. The oil sampling cabinet (1) is located outside the soundproof enclosure of the converter transformer (001); The remote oil sampling valve (4) of each group is installed in the oil sampling cabinet (1), one end of the transition pipe joint (2) of each group is connected to a corresponding original sampling valve (0011) of the converter transformer (001), the other end of the transition pipe joint (2) of each group is connected to one end of the external lead pipe (3) of the same group, and the other end of the external lead pipe (3) of each group extends out of the sound insulation cover of the converter transformer (001), enters the oil sampling cabinet (1), and is connected to the remote oil sampling valve (4) of the same group.

2. The oil outlet device for a converter transformer according to claim 1, characterized in that: An external thread A is provided at the opening of one end of each group of the external lead pipes (3), and an external thread B is provided at the opening of the other end of each group of the external lead pipes (3); a corresponding threaded joint A (5) and a connecting flange A (6) are provided at one end of each group of the external lead pipes (3), and a corresponding threaded joint B (7) and a connecting flange B (8) are provided at the other end of each group of the external lead pipes (3), and a liquid through hole is provided in the middle of each of the connecting flanges A (6) and the connecting flanges B (8); each of the threaded joints A (5) is welded to the liquid through hole of the corresponding connecting flange A (6), and each of the threaded joints A (5) has a corresponding threaded joint. The inner hole of each threaded joint A (5) is connected to the liquid through-hole of the corresponding connecting flange A (6), the inner hole wall of each threaded joint A (5) is provided with an inner thread A, and the inner thread A of each threaded joint A (5) is connected to the outer thread A of the corresponding group of external lead pipes (3); each threaded joint B (7) is welded to the liquid through-hole of the corresponding connecting flange B (8), each threaded joint B (7) has an inner hole connected to the liquid through-hole of the corresponding connecting flange B (8), the inner hole wall of each threaded joint B (7) is provided with an inner thread B, and the inner thread B of each threaded joint B (7) is connected to the outer thread B of the corresponding group of external lead pipes (3).

3. The oil outlet external lead device for a converter transformer according to claim 2, characterized in that: The outer side of each group of the external lead pipes (3) is sleeved with a stainless steel hose (9), one end opening of each of the stainless steel hoses (9) is provided with an internal thread C, and the other end opening of each of the stainless steel hoses (9) is provided with an internal thread D. The outer peripheral surface of each of the threaded joints A (5) is provided with an external thread C that matches the internal thread C of the corresponding stainless steel hose (9), and the outer peripheral surface of each of the threaded joints B (7) is provided with an external thread D that matches the internal thread D of the corresponding stainless steel hose (9). Each of the stainless steel hoses (9) and the external lead pipes (3) inside the stainless steel hoses (9) extend together from the soundproof cover of the converter transformer (001) and enter the oil sampling cabinet (1).

4. The oil outlet external lead device for a converter transformer according to claim 1, characterized in that: A three-way pipe (10) is connected between the other end of the transition pipe joint (2) of each group and one end of the external lead pipe (3) of the same group. Each of the three-way pipes (10) has three interfaces. The first interface of each of the three-way pipes (10) is connected to the other end of the corresponding transition pipe joint (2), the second interface of each of the three-way pipes (10) is connected to one end of the corresponding external lead pipe (3), and the third interface of each of the three-way pipes (10) is connected to an on-site sampling valve (11).

5. The oil outlet external lead device for a converter transformer according to claim 1, characterized in that: A plurality of remote oil sampling valve fixing seats (12) are provided on the inner wall of the oil sampling cabinet (1), and each of the remote oil sampling valves (4) is fixedly connected to a corresponding remote oil sampling valve fixing seat (12) via a screw.

6. The oil outlet external lead device for a converter transformer according to claim 1, characterized in that: A cabinet support (13) for supporting the oil sampling cabinet (1) is provided below the oil sampling cabinet (1).

7. The oil outlet external lead device for a converter transformer according to claim 6, characterized in that: The oil sampling cabinet (1) and the cabinet support (13) are fixedly connected by bolts.

8. The device for externally introducing the oil inlet of a converter transformer according to claim 6, characterized in that: A waste oil pot bracket (14) is installed inside the cabinet support (13), and a waste oil pot (15) is placed on the waste oil pot bracket (14).

9. The oil outlet external lead device for a converter transformer according to claim 8, characterized in that: The waste oil pot (15) is made of transparent plastic material.

10. The oil outlet external lead device for a converter transformer according to claim 9, characterized in that: The outer surface of the waste oil pot (15) is provided with scale lines for indicating the amount of oil contained in the waste oil pot (15).

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