Oil filtering and supplementing device for hydraulic coupler of water feeding pump of power plant

Abstract

The utility model relates to the technical field of feed pumps, in particular to a power plant feed pump hydraulic coupler oil filtering and supplementing device which comprises a first electric feed pump, a second electric feed pump and an oil filter, the first electric feed pump is composed of a first motor, a first hydraulic coupler and a first main pump, and the first motor and the first main pump are in transmission connection through the first hydraulic coupler. The second electric feed pump is composed of a second motor, a second hydraulic coupler and a second main pump, and the second motor and the second main pump are in transmission connection through the second hydraulic coupler. The device is reasonable and compact in structure and convenient to use, the first liquid level detector and the second liquid level detector are arranged on the first hydraulic coupler and the second hydraulic coupler, the oil filter is used for rapidly monitoring and conducting oil filtering and oil supplementing on the first electric water feeding pump and the second electric water feeding pump and the oil pouring process between the two electric water feeding pumps, and therefore the working efficiency is improved. Unattended oil filtering and oil supplementing can be achieved, the labor cost is reduced, and the device is fast, convenient, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply pumps, and is an oil filtering and oil replenishing device for a hydraulic coupler of a water supply pump in a power plant. Background Art

[0002] At present, each unit in a thermal power plant is equipped with two electric feedwater pumps to adjust the boiler feedwater. In actual operation, the hydraulic coupling in the feedwater pump is used to filter and replenish oil, which has become a normal work content. The oil filtering and replenishing work requires the installation of a temporary oil filter outside to complete the work. The operation is troublesome and there is a certain degree of oil leakage risk. It requires continuous monitoring by personnel, which increases labor costs and is not conducive to the safe and stable operation of the electric feedwater pump. The specific problems are as follows: 1. The electric feedwater pump is not yet connected to an external oil filter device. The oil filtering work requires the use of a temporary hose to connect the oil filter machine. The risk is high, and continuous monitoring by personnel is required, which increases labor costs; 2. After the electric feedwater pump is shut down, the disturbance in the hydraulic coupling disappears, which will cause the oil temperature and oil level to drop, which may cause the oil level to exceed the lower limit of the oil level gauge, resulting in the inability to monitor the oil level and the inability of the standby machine to standby normally; 3. The hydraulic coupling in the electric feedwater pump also needs to use a hose to connect the external oil filter machine for oil replenishment, which is troublesome to operate. In an emergency, it is impossible to quickly replenish oil, which may cause the fault to expand and even cause the unit to shut down. Summary of the invention

[0003] The utility model provides an oil filtering and oil replenishing device for a hydraulic coupling of a power plant feed water pump, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of continuous monitoring and oil leakage risks in the oil filtering and oil replenishing processes of the hydraulic coupling in the existing electric feed water pump.

[0004] The technical solution of the utility model is achieved through the following measures: a power plant feed water pump hydraulic coupling oil filtering and oil replenishing device, including a first electric feed water pump, a second electric feed water pump and an oil filter, the first electric feed water pump is composed of a motor 1, a hydraulic coupling 1 and a main pump 1, the motor 1 and the main pump 1 are connected by a hydraulic coupling 1, the second electric feed water pump is composed of a motor 2, a hydraulic coupling 2 and a main pump 2, the motor 2 and the main pump 2 are connected by a hydraulic coupling 2, and the hydraulic coupling 1 and the hydraulic coupling 2 are connected. The oil tanks of the hydraulic coupler 1 and the oil filter outlet are fixedly connected by a first delivery pipeline, the oil tank outlet of the hydraulic coupler 1 and the oil filter inlet are fixedly connected by a second delivery pipeline, the first delivery pipeline and the oil tank inlet of the hydraulic coupler 2 are fixedly connected by a fourth delivery pipeline, the second delivery pipeline and the oil tank outlet of the hydraulic coupler 2 are fixedly connected by a third delivery pipeline, and liquid level detector 1 and liquid level detector 2 are fixedly installed on the oil tanks of the hydraulic coupler 1 and the hydraulic coupler 2, respectively.

[0005] The following are further optimizations and / or improvements to the above utility model technical solution:

[0006] An electric control valve 1 is fixedly installed on the first delivery pipeline between the oil filter and the fourth delivery pipeline, and an electric control valve 2 is fixedly installed on the second delivery pipeline between the oil filter and the third delivery pipeline.

[0007] The liquid level detector 1 is interlocked with the electric control valve 1 and the electric control valve 2 respectively, and the liquid level detector 2 is interlocked with the electric control valve 1 and the electric control valve 2 respectively.

[0008] Valves are fixedly installed on the third and fourth delivery pipelines, a valve is fixedly installed on the first delivery pipeline between the fourth delivery pipeline and the first hydraulic coupler, and a valve is fixedly installed on the second delivery pipeline between the third delivery pipeline and the first hydraulic coupler.

[0009] The utility model has a reasonable and compact structure and is easy to use. By arranging liquid level detectors one and two on hydraulic couplers one and two, and using an oil filter to quickly monitor and filter oil, replenish oil and pour oil between electric water pumps one and two, the utility model can realize unattended oil filtering and replenishing, reduce labor costs, be quick and convenient, and save time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Attached Figure 1 The figure is a schematic diagram of the process flow of the best embodiment of the utility model.

[0011] The codes in the accompanying drawings are: 1 is the first electric water pump, 2 is the second electric water pump, 3 is the oil filter, 4 is the motor 1, 5 is the hydraulic coupler 1, 6 is the main pump 1, 7 is the motor 2, 8 is the hydraulic coupler 2, 9 is the main pump 2, 10 is the oil tank, 11 is the first delivery pipeline, 12 is the second delivery pipeline, 13 is the third delivery pipeline, 14 is the fourth delivery pipeline, 15 is the liquid level detector 1, 16 is the liquid level detector 2, 17 is the electric control valve 1, 18 is the electric control valve 2, and 19 is the valve. DETAILED DESCRIPTION

[0012] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0013] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0014] The present invention is further described below in conjunction with the embodiments and drawings:

[0015] As attached Figure 1As shown, the hydraulic coupling oil filter and oil replenishing device of the power plant feed water pump comprises a first electric feed water pump 1, a second electric feed water pump 2 and an oil filter 3. The first electric feed water pump 1 is composed of a motor 1 4, a hydraulic coupling 1 5 and a main pump 1 6. The motor 1 4 and the main pump 1 6 are connected by a hydraulic coupling 1 5. The second electric feed water pump 2 is composed of a motor 2 7, a hydraulic coupling 2 8 and a main pump 2 9. The motor 2 7 and the main pump 2 9 are connected by a hydraulic coupling 2 8. The hydraulic coupling 1 5 and the hydraulic coupling 2 8 are both fixedly installed with an oil tank 10. The hydraulic coupling 1 5 The inlet of the oil tank 10 and the outlet of the oil filter 3 are fixedly connected by a first delivery pipeline 11, the outlet of the oil tank 10 of the hydraulic coupler 1 5 and the inlet of the oil filter 3 are fixedly connected by a second delivery pipeline 12, the first delivery pipeline 11 and the inlet of the oil tank 10 of the hydraulic coupler 2 8 are fixedly connected by a fourth delivery pipeline 14, the second delivery pipeline 12 and the outlet of the oil tank 10 of the hydraulic coupler 2 8 are fixedly connected by a third delivery pipeline 13, and a liquid level detector 15 and a liquid level detector 2 16 are fixedly installed on the oil tanks 10 of the hydraulic coupler 1 5 and the hydraulic coupler 2 8, respectively.

[0016] In the present utility model, the oil filter 3 adopts Chongqing Qianneng TY-40B oil filter with a flow rate of 40L / min.

[0017] The utility model arranges a liquid level detector 15 and a liquid level detector 2 16 on the hydraulic coupler 1 5 and the hydraulic coupler 2 8, and adopts an oil filter 3 to quickly monitor and filter the oil, replenish the oil, and pour the oil between the first electric water pump 1 and the second electric water pump 2, so that unattended oil filtering and oil replenishing can be achieved, labor costs can be reduced, and the utility model is quick, convenient, time-saving and labor-saving.

[0018] After the utility model is put into operation, its beneficial effects are:

[0019] Firstly, after the device is put into operation, there is no temporary external hose on site, which reduces the oil pipeline interface, reduces the possibility of oil leakage, and beautifies the on-site environment; secondly, after the device is put into operation, the oil filtering function of each electric water supply pump can be detected online, and unmanned supervision can be realized, thereby reducing labor costs; thirdly, after the device is put into operation, the hydraulic couplings of the two electric water supply pumps can pour oil from each other, and the oil levels of the hydraulic couplings 1 5 and the hydraulic couplings 2 8 in the two electric water supply pumps can be better controlled; fourthly, after the device is put into operation, the hydraulic couplings in each electric water supply pump can be quickly replenished with oil, thereby reducing the degree of harm caused by oil system failure accidents of each electric water supply pump.

[0020] According to actual needs, the oil filter and oil replenishing device of the hydraulic coupling of the above-mentioned power plant feed water pump can be further optimized and / or improved:

[0021] As attached Figure 1As shown, an electric control valve 17 is fixedly installed on the first delivery pipeline 11 between the oil filter 3 and the fourth delivery pipeline 14, and an electric control valve 2 18 is fixedly installed on the second delivery pipeline 12 between the oil filter 3 and the third delivery pipeline 13.

[0022] As attached Figure 1 As shown, the liquid level detector 15 is interlocked with the electric control valve 17 and the electric control valve 2 18 respectively, and the liquid level detector 2 16 is interlocked with the electric control valve 17 and the electric control valve 2 18 respectively. During use, online automatic interlocking control of oil replenishment can be realized. When the liquid level detector 15 detects that the liquid level in the oil tank 10 of the hydraulic coupling 15 is lower than the limit value, the electric control valve 17 is started to realize rapid oil replenishment of the hydraulic coupling 15. When the liquid level detector 2 16 detects that the liquid level in the oil tank 10 of the hydraulic coupling 2 8 is lower than the limit value, the electric control valve 2 18 is started to realize oil replenishment of the hydraulic coupling 2 8.

[0023] As attached Figure 1 As shown, valves 19 are fixedly installed on the third delivery pipeline 13 and the fourth delivery pipeline 14, the valve 19 is fixedly installed on the first delivery pipeline 11 between the fourth delivery pipeline 14 and the hydraulic coupler 5, and the valve 19 is fixedly installed on the second delivery pipeline 12 between the third delivery pipeline 13 and the hydraulic coupler 5.

[0024] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.

[0025] The use process of the best embodiment of the utility model:

[0026] First, open the outlet (oil drain port) of the hydraulic coupler 15 oil tank 10, close the inlet (oil replenishing port) of the hydraulic coupler 15, open the inlet (oil inlet) and outlet (oil outlet) of the oil filter 3, and filter the oil of the hydraulic coupler 15 oil tank 10 in the first electric water supply pump 1; open the outlet (oil drain port) of the hydraulic coupler 28 oil tank 10, close the inlet (oil replenishing port) of the hydraulic coupler 28, open the inlet (oil inlet) and outlet (oil outlet) of the oil filter 3, and filter the oil of the hydraulic coupler 28 oil tank 10 in the second electric water supply pump 2;

[0027] Next, close the outlet (oil drain port) of the oil tank 10 of the hydraulic coupler 15, open the oil replenishment port of the hydraulic coupler 15, open the oil inlet and oil outlet of the oil filter 3, and realize the import (oil replenishment port) of the hydraulic coupler 15 oil tank 10 in the first electric water supply pump 1; close the outlet (oil drain port) of the oil tank 10 of the hydraulic coupler 28, open the inlet (oil replenishment port) of the hydraulic coupler 28, open the inlet (oil inlet) and outlet (oil outlet) of the oil filter 3, and realize the oil replenishment of the hydraulic coupler 28 oil tank 10 in the second electric water supply pump 2;

[0028] Finally, open the outlet (oil drain port) of the oil tank 10 of the hydraulic coupling 1 5 and the hydraulic coupling 2 8, close the inlet (oil replenishing port) of the hydraulic coupling 1 5 and the hydraulic coupling 2 8, open the inlet (oil inlet) and outlet (oil outlet) of the oil filter 3, and pour the oil from the oil tank 10 of the hydraulic coupling 1 5 in the first electric water pump 1 and the oil tank 10 of the hydraulic coupling of the second electric water pump 2.

Claims

1. An oil filter and oil replenishing device for a hydraulic coupler of a power plant feed water pump, characterized in that It includes a first electric water supply pump, a second electric water supply pump and an oil filter. The first electric water supply pump consists of a motor 1, a hydraulic coupling 1 and a main pump 1. The motor 1 and the main pump 1 are connected by a hydraulic coupling 1. The second electric water supply pump consists of a motor 2, a hydraulic coupling 2 and a main pump 2. The motor 2 and the main pump 2 are connected by a hydraulic coupling 2. Oil tanks are fixedly installed inside the hydraulic coupling 1 and the hydraulic coupling 2. The oil tank inlet of the hydraulic coupling 1 and the oil filter outlet are fixedly connected by a first delivery pipeline, the oil tank outlet of the hydraulic coupling 1 and the oil filter inlet are fixedly connected by a second delivery pipeline, the first delivery pipeline and the oil tank inlet of the hydraulic coupling 2 are fixedly connected by a fourth delivery pipeline, the second delivery pipeline and the oil tank outlet of the hydraulic coupling 2 are fixedly connected by a third delivery pipeline, and a liquid level detector 1 and a liquid level detector 2 are fixedly installed on the oil tanks of the hydraulic coupling 1 and the hydraulic coupling 2, respectively.

2. The oil filtering and oil replenishing device for the hydraulic coupling of a power plant feed water pump according to claim 1 is characterized in that An electric control valve 1 is fixedly installed on the first delivery pipeline between the oil filter and the fourth delivery pipeline, and an electric control valve 2 is fixedly installed on the second delivery pipeline between the oil filter and the third delivery pipeline.

3. The oil filtering and oil replenishing device for the hydraulic coupling of a power plant feed water pump according to claim 2 is characterized in that The liquid level detector 1 is interlocked with the electric control valve 1 and the electric control valve 2 respectively, and the liquid level detector 2 is interlocked with the electric control valve 1 and the electric control valve 2 respectively.

4. The oil filtering and oil replenishing device for hydraulic coupling of a power plant feed water pump according to claim 1, 2 or 3, characterized in that Valves are fixedly installed on the third delivery pipeline and the fourth delivery pipeline, a valve is fixedly installed on the first delivery pipeline between the fourth delivery pipeline and the first hydraulic coupler, and a valve is fixedly installed on the second delivery pipeline between the third delivery pipeline and the first hydraulic coupler.

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