CN211245751U

CN211245751U - Idle protection system of vacuum oil filter

Info

Publication number: CN211245751U
Application number: CN201921617719.4U
Authority: CN
Inventors: 曾佑江
Original assignee: Chongqing Jialing Oil Filter Machine Research Institute
Current assignee: Chongqing Jialing Oil Filter Machine Research Institute
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-08-14
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a vacuum oil filter's idle running protection system, including vacuum separator's top is connected with the pipeline, and the cecum of pipeline sets up the oil inlet, pipeline and the import intercommunication of oil drain pump are passed through to vacuum separator's bottom, the pipe connection oil-out is passed through in the export of oil drain pump, vacuum separator's bottom is provided with liquid level switch. The utility model discloses can ensure that the oil extraction pump normally works and reduce its fault rate, improve its life.

Description

Idle protection system of vacuum oil filter

Technical Field

The utility model relates to a vacuum oil filter field, concretely relates to idle running protection system of vacuum oil filter oil extraction pump.

Background

The extra-high voltage two-stage insulating oil vacuum oil filter is widely applied to filtering transformer oil, and the transformer oil filtering operation is often carried out on the site of a transformer. The ultra-high voltage two-stage insulating oil vacuum oil filter discharges the treated oil in the vacuum separator through an oil discharge pump. When the equipment works, operators need to pay attention to whether oil products are treated in the vacuum separator at any time, and great inconvenience is brought to the operators. Once the operator leaves the installation, or no oil is found in the vacuum separator, the oil pump continues to operate, which results in direct oil-free dry friction of the oil pump, which is what we often say idle, and a long-term occurrence of this situation can greatly shorten the service life of the oil pump.

Disclosure of Invention

In order to solve the technical problem, ensure that the oil pump normally works and reduce its fault rate, improve its life, the utility model provides a vacuum oil filter's idle running protection system.

The technical scheme of the utility model be, vacuum oil filter's idle running protection system, including vacuum separator's top is connected with the pipeline, and the cecum of pipeline sets up the oil inlet, pipeline and the import intercommunication of oil drain pump are passed through to vacuum separator's bottom, the pipe connection oil-out is passed through in the export of oil drain pump, vacuum separator's bottom is provided with liquid level switch, or the oil drain pump with be provided with liquid level switch on the pipeline between the vacuum separator.

Further, the signal output part of the liquid level switch is connected with the input end of the relay, the output end of the relay is connected with the input end of the oil pump controller, the signal output part of the oil pump controller is connected with the oil discharge pump, and the oil pump controller outputs a control signal to control the oil discharge pump to stop working.

In the vacuum oil filter, a heating device is arranged between the oil inlet and the vacuum separator, and the heating device is connected with the top of the vacuum separator through a pipeline. The heating device is provided with a heating layer wrapped outside the pipeline.

The utility model discloses set up the oil level switch on special high voltage doublestage insulating oil vacuum oil filter's basis, when the liquid level in the vacuum separator is in low liquid level, signals give the relay, and the relay is with signal transmission oil pump controller, and the control oil pump is with just stop work. Thereby can effectually protect the oil pump not receive the damage, improve its life.

To sum up, it is visible the utility model has the advantages of it is following:

1. through the judgement of liquid level, control oil pump just stop work, improve the life of oil pump.

2. The idle time of the oil pump is reduced, and the failure rate of the oil pump is reduced, so that the use efficiency of the vacuum oil filter is improved.

3. On the basis of the original vacuum oil filter, fewer parts are added, the structure of the original filter is not required to be changed, and the performance of the whole filter is improved.

4. Original vacuum oil filter needs operating personnel to pay close attention to the vacuum separator constantly, and is difficult to leave and does other work, the utility model discloses allow operating personnel to leave this post, handle other work to improve work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a block diagram of the idle protection of the present invention;

in the figure: 1-an oil inlet; 2-a pipeline; 3-a heating device; 4-a vacuum separator; 5-treating the oil product; 6-liquid level switch; 7-an oil discharge pump; 8-oil outlet; 9-a relay; 10-oil pump controller.

Detailed Description

Referring to fig. 1, the utility model discloses a vacuum oil filter's idle running protection system, including vacuum separator 4 pipeline 2 connection heating device 3 is passed through at vacuum separator 4's top, and one section pipeline 2 is connected to heating device 3's the other end, and the blind end of pipeline 2 sets up oil inlet 1, pipeline 2 and oil extraction pump 7's import intercommunication is passed through to vacuum separator 4's bottom, oil-out 8, its characterized in that are connected through pipeline 2 in the export of oil extraction pump 7: the bottom of the vacuum separator 4 is provided with a liquid level switch 6, or a liquid level switch 6 is arranged on a pipeline between the oil discharge pump 7 and the vacuum separator 4.

For better heating, the heating device 3 has a heating layer wrapped around the outside of the pipe 2.

Referring to fig. 2, in the utility model, relay 9's input is connected to liquid level switch 6's signal output part, and relay 9's output is connected with oil pump controller 10's input, and oil pump controller 10's signal output part is connected with oil extraction pump 7, and oil pump controller 10 output control signal controls oil extraction pump 7 stop work. The oil pump controller 10 may be a newly added controller unit, and may be implemented by a single chip or the like commonly used in the market. Or a new function added by adding a signal line to the control system of the original device. The oil pump controller 10 compares the received liquid level signal with a preset threshold value, and outputs a signal for controlling the oil discharge pump 7 to stop working if the value is less than or equal to the preset threshold value. This process is achieved by conventional means in the art and is not the point of the invention.

A liquid level switch with the model number of VP01 can be adopted, when the liquid level is lower than the installation position, a signal is sent out, and the oil pump controller outputs a signal that the oil discharge pump stops working after receiving the signal. The level switch may be a threaded connection with the vacuum separator. And a sealing layer is arranged at the joint of the vacuum separator and the liquid level switch, so that the air tightness of the vacuum separator is ensured. The sealing layer may be formed by applying glue to the joint of the vacuum separator.

Claims

1. Vacuum oil filter's idle running protection system, including vacuum separator (4) the top of vacuum separator (4) is connected with pipeline (2), and the blind end of pipeline (2) sets up oil inlet (1), the bottom of vacuum separator (4) is through the import intercommunication of pipeline (2) with oil extraction pump (7), oil-out (8), its characterized in that are connected through pipeline (2) in the export of oil extraction pump (7): and a liquid level switch (6) is arranged at the bottom of the vacuum separator (4), or the liquid level switch (6) is arranged on a pipeline between the oil discharge pump (7) and the vacuum separator (4).

2. The idle protection system of the vacuum oil filter of claim 1, characterized in that: still include the input of relay (9) is connected to the signal output part of liquid level switch (6), and the output of relay (9) is connected with the input of oil pump controller (10), and the signal output part and the oil extraction pump (7) of oil pump controller (10) are connected, and oil pump controller (10) output control signal controls oil extraction pump (7) stop work.

3. The idle protection system of a vacuum oil filter according to claim 1 or 2, characterized in that: a heating device (3) is arranged between the oil inlet (1) and the vacuum separator (4), and the heating device (3) is connected with the top of the vacuum separator (4) through a pipeline (2).

4. The idle protection system of the vacuum oil filter of claim 3, characterized in that: the heating device (3) is provided with a heating layer wrapped outside the pipeline (2).