CN212717420U - EH oil supply device - Google Patents
EH oil supply device Download PDFInfo
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- CN212717420U CN212717420U CN202021622000.2U CN202021622000U CN212717420U CN 212717420 U CN212717420 U CN 212717420U CN 202021622000 U CN202021622000 U CN 202021622000U CN 212717420 U CN212717420 U CN 212717420U
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- oil supply
- pipe
- way valve
- tank
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Abstract
An EH oil supply device comprises an oil tank, wherein an oil suction port of the oil tank is connected with one end of an oil supply pipe, the other end of the oil supply pipe is an oil supply end, the oil supply pipe is sequentially provided with a main pump, a first one-way valve and a second one-way valve along the flowing direction, the allowable flowing direction of the first one-way valve and the second one-way valve is the oil supply end of the oil suction port of the oil tank flowing to the oil supply pipe, the oil supply pipe between the main pump and the first one-way valve is connected with a pressure measuring joint and one end of a first oil return pipe, the other end of the first oil return pipe is connected with an oil return port of the oil tank, the first oil return pipe is provided with an overflow valve, the oil supply pipe between the first one-way valve, an outlet pressure transmitter of the pump is connected to the oil supply pipe between the adjustable throttle valve and the second one-way valve, and an energy accumulator is connected to the oil supply pipe between the second one-way valve and the oil supply end. The utility model discloses a stability of EH oil supply unit is higher, and is more reliable durable to easy to maintain maintains the maintenance.
Description
Technical Field
The utility model relates to a hydraulic pressure technical field especially relates to servomotor fuel feeding technique, particularly is an EH oil supply unit.
Background
The EH system is a turbine electrohydraulic control system, which comprises an oil supply device and is one of important components of a turbine control system of a thermal power station. The EH oil supply device is a source of pressure oil and power in an EH system of the thermal power station, and the stability and the durability of the EH oil supply device are directly related to the safe operation of the thermal power station. In the power generation process of the steam turbine set, the opening and the closing of a steam valve are controlled by an EH system servomotor, and an EH oil supply device is a power source of the valve servomotor. The EH oil supply device in the prior art is not stable and reliable enough, and influences the sustainability of power plant power generation.
Disclosure of Invention
An object of the utility model is to provide an EH oil supply unit, an EH oil supply unit solve among the prior art EH oil supply unit stable enough and reliable technical problem.
The utility model discloses an EH oil supply unit, including the oil tank, the oil absorption mouth of oil tank is connected with one end of oil feed pipe, the other end of oil feed pipe is the oil feed end, the oil feed pipe has set gradually the main pump along the direction of flow, first check valve and second check valve, the permission flow direction of first check valve and second check valve is the oil feed end that the oil absorption mouth of oil tank flows to the oil feed pipe, be connected with pressure measurement joint and the one end of first oil return pipe on the oil feed pipe between main pump and the first check valve, the other end of first oil return pipe is connected with the oil return mouth of oil tank, be provided with the overflow valve on the first oil return pipe, pass through the pipeline between oil feed pipe between first check valve and the second check valve and the first oil return pipe, solenoid valve and adjustable throttle valve are connected, be connected with pump outlet pressure changer on the oil feed pipe between adjustable throttle valve and the second check valve, be connected with the energy accumulator on the oil feed, a second oil return pipe is connected on an oil supply pipe between the second one-way valve and the energy accumulator and is connected with an oil return port of the oil tank, a system pressure gauge and a system pressure transmitter are arranged on the second oil return pipe, a third oil return pipe is connected on a pipeline between the oil supply pipe and the energy accumulator and is connected with the oil return port of the oil tank,
the oil tank be connected with the cooling circulation subassembly, the cooling circulation subassembly include that both ends connect the oil pipe of the oil absorption mouth and the oil return opening of oil tank respectively, oil pipe on set gradually circulating pump, cooler and Y type filter, circulating pump and cooler between oil pipe on be connected with the manometer.
Preferably, a partition plate is arranged in the oil tank and divides the oil tank into an oil suction area and an oil return area.
Preferably, the oil tank is provided with an air filter, a heater, a temperature sensor, a liquid level indicator and a liquid level sensor.
Preferably, the heater is an immersion electric heater.
Preferably, an oil suction filter is arranged at an oil suction port of the oil tank.
Preferably, an oil return filter is arranged on the third oil return pipe.
Preferably, a system filter is arranged on an oil supply pipe between the overflow valve and the first check valve.
Preferably, the system further comprises a standby main pump, and two ends of the standby main pump are respectively connected with the oil tank suction port and one end of the second one-way valve through pipelines.
Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses an among the EH oil supply unit fluid gets into the main pump from the oil absorption mouth, steps up the back through system filter, first check valve and second check valve and fuel feeding end servomotor fuel feeding. The overflow valve plays a role in adjusting the pressure of the oil outlet of the main pump. The electromagnetic valve and the adjustable throttle valve play a role in adjusting the outlet pressure of the main pump. The pump outlet pressure transmitter plays a role in monitoring the outlet pressure of the main pump. The system pressure gauge and the system pressure transmitter play a role in monitoring the system pressure. The accumulator plays a role in stabilizing pressure. Compared with the prior art, the utility model, stability is higher, and is more reliable durable to easy to maintain maintains the maintenance.
Drawings
Fig. 1 is a schematic diagram of an EH oil supply device according to the present invention.
Fig. 2 is a schematic view of a first three-dimensional structure of an EH oil supply device according to the present invention.
Fig. 3 is a schematic diagram of a first three-dimensional structure of an EH oil supply device according to the present invention.
Fig. 4 is a schematic front view of an EH oil supply device according to the present invention.
Fig. 5 is a left side view structural diagram of an EH oil supply device according to the present invention.
Fig. 6 is a right-side view structural diagram of an EH oil supply device according to the present invention.
Fig. 7 is a schematic top view of an EH oil supply device according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments, but the present invention is not limited to this embodiment, and the protection scope of the present invention should be included in all similar structures and similar variations thereof.
Example 1
As shown in fig. 1 to 7, an EH oil supply device of the present invention includes an oil tank 1, an oil suction port 49 of the oil tank 1 is connected to one end of an oil supply pipe, the other end of the oil supply pipe is an oil supply end 48, the oil supply pipe is sequentially provided with a main pump 3, a first check valve 11 and a second check valve 14 along a flow direction, the first check valve 11 and the second check valve 14 are allowed to flow to the oil supply end 48, the oil supply pipe between the main pump 3 and the first check valve 11 is connected to one end of a pressure measuring joint 5 and one end of a first oil return pipe 50, the other end of the first oil return pipe 50 is connected to an oil return port of the oil tank 1, the first oil return pipe 50 is provided with an overflow valve 7, the oil supply pipe between the first check valve 11 and the second check valve 14 is connected to the first oil return pipe 50 through a pipeline, a solenoid valve 13 and an adjustable throttle valve 15, the oil supply pipe between the adjustable throttle valve 15 and the second check valve 14 is connected to a pressure transmitter, an energy accumulator 23 is connected on the oil supply pipe between the second one-way valve 14 and the oil supply end 48, a second oil return pipe 51 is connected on the oil supply pipe between the second one-way valve 14 and the energy accumulator 23, the second oil return pipe 51 is connected with an oil return opening of the oil tank 1, a system pressure gauge 16 and a system pressure transmitter 17 are arranged on the second oil return pipe 51, a third oil return pipe 52 is connected on the pipeline between the oil supply pipe and the energy accumulator 23, the third oil return pipe 52 is connected with the oil return opening of the oil tank 1,
the oil tank 1 be connected with cooling circulation subassembly 53, cooling circulation subassembly 53 include that both ends connect the oil pipe of oil absorption mouth 49 and oil return opening of oil tank 1 respectively, oil pipe on set gradually circulating pump 41, cooler 32 and Y type filter 30, the oil pipe between circulating pump 41 and the cooler 32 on be connected with manometer 39.
Preferably, a partition plate 47 is arranged in the oil tank 1, and the oil tank 1 is divided into an oil suction area 46 and an oil return area 33 by the partition plate 47.
Preferably, the oil tank 1 is provided with an air cleaner 31, a heater 37, a temperature sensor 29, a liquid level indicator 28 and a liquid level sensor 44.
Preferably, the heater 37 is an immersion electric heater 37.
Preferably, an oil suction filter 43 is arranged at the oil suction port 49 of the oil tank 1.
Preferably, the third oil return pipe 52 is provided with an oil return filter 35.
Preferably, a system filter 9 is arranged on an oil supply pipe between the overflow valve 7 and the first check valve 11.
Preferably, the system further comprises a standby main pump 4, and two ends of the standby main pump 4 are respectively connected with the oil suction port 49 of the oil tank 1 and one end of the second check valve 14 through pipelines.
Specifically, the device comprises a controller 45, signal output ends of the controller 45 are respectively connected to signal input ends of a main pump 3, a standby main pump 4, an overflow valve 7, an electromagnetic valve 13, an adjustable throttle valve 15, an accumulator 23, a circulating pump 41, a cooler 32, a heater 37 and a liquid level indicator 28, and signal input ends of the controller 45 are respectively connected to signal output ends of a pump outlet pressure transmitter 18, a system pressure gauge 16, a system pressure transmitter 17, a temperature sensor 29 and a liquid level sensor 44.
Specifically, the controller 45, the main pump 3, the standby main pump 4, the overflow valve 7, the electromagnetic valve 13, the adjustable throttle valve 15, the accumulator 23, the circulation pump 41, the cooler 32, the heater 37, the liquid level indicator 28, the pump outlet pressure transmitter 18, the system pressure gauge 16, the system pressure transmitter 17, the temperature sensor 29, and the liquid level sensor 44 in this embodiment are all known in the art, and are not described herein again.
The working principle of the embodiment is as follows:
oil enters the main pump 3 from the oil suction port 49, and is pressurized and then supplied to the oil engine through the system filter 9, the first check valve 11, the second check valve 14 and the oil supply port 48. The overflow valve 7 plays a role in adjusting the pressure of the oil outlet of the main pump 3. The electromagnetic valve 13 and the adjustable throttle valve 15 play a role in adjusting the outlet pressure of the main pump 3. The pump outlet pressure transmitter 18 functions to monitor the outlet pressure of the main pump 3. System pressure gauge 16 and system pressure transmitter 17 function to monitor system pressure. The accumulator 23 functions to stabilize the pressure. Compared with the prior art, the utility model, stability is higher, and is more reliable durable to easy to maintain maintains the maintenance.
Claims (8)
1. An EH fuel supply apparatus comprising a fuel tank (1), characterized in that: an oil suction port (49) of an oil tank (1) is connected with one end of an oil supply pipe, the other end of the oil supply pipe is an oil supply end (48), the oil supply pipe is sequentially provided with a main pump (3), a first one-way valve (11) and a second one-way valve (14) along the flowing direction, the allowed flowing direction of the first one-way valve (11) and the second one-way valve (14) is that the oil suction port (49) of the oil tank (1) flows to the oil supply end (48) of the oil supply pipe, the oil supply pipe between the main pump (3) and the first one-way valve (11) is connected with one end of a pressure measuring joint (5) and one end of a first oil return pipe (50), the other end of the first oil return pipe (50) is connected with an oil return port of the oil tank (1), an overflow valve (7) is arranged on the first oil return pipe (50), the oil supply pipe between the first one-way valve (11) and the second one-way valve (14) is, an oil supply pipe between the adjustable throttle valve (15) and the second one-way valve (14) is connected with a pump outlet pressure transmitter (18), an oil supply pipe between the second one-way valve (14) and the oil supply end (48) is connected with an energy accumulator (23), an oil supply pipe between the second one-way valve (14) and the energy accumulator (23) is connected with a second oil return pipe (51), the second oil return pipe (51) is connected with an oil return port of the oil tank (1), a system pressure gauge (16) and a system pressure transmitter (17) are arranged on the second oil return pipe (51), a pipeline between the oil supply pipe and the energy accumulator (23) is connected with a third oil return pipe (52), and the third oil return pipe (52) is connected with the oil return port of the oil tank (1),
oil tank (1) be connected with cooling circulation subassembly (53), cooling circulation subassembly (53) include that both ends connect oil suction opening (49) and the oil pipe of oil return opening of oil tank (1) respectively, oil pipe on set gradually circulating pump (41), cooler (32) and Y type filter (30), circulating pump (41) and cooler (32) between oil pipe on be connected with manometer (39).
2. An EH oil supply as defined in claim 1, wherein: the oil tank (1) is internally provided with a partition plate (47), and the partition plate (47) divides the oil tank (1) into an oil suction area (46) and an oil return area (33).
3. An EH oil supply as defined in claim 1, wherein: the oil tank (1) is provided with an air filter (31), a heater (37), a temperature sensor (29), a liquid level indicator (28) and a liquid level sensor (44).
4. An EH oil supply according to claim 3, wherein: the heater (37) adopts an immersion electric heater (37).
5. An EH oil supply as defined in claim 1, wherein: an oil suction filter (43) is arranged at an oil suction port (49) of the oil tank (1).
6. An EH oil supply as defined in claim 1, wherein: and an oil return filter (35) is arranged on the third oil return pipe (52).
7. An EH oil supply as defined in claim 1, wherein: and a system filter (9) is arranged on an oil supply pipe between the overflow valve (7) and the first one-way valve (11).
8. An EH oil supply as defined in claim 1, wherein: the oil tank also comprises a standby main pump (4), and two ends of the standby main pump (4) are respectively connected with an oil suction port (49) of the oil tank (1) and one end of the second one-way valve (14) through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021622000.2U CN212717420U (en) | 2020-08-07 | 2020-08-07 | EH oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021622000.2U CN212717420U (en) | 2020-08-07 | 2020-08-07 | EH oil supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717420U true CN212717420U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021622000.2U Active CN212717420U (en) | 2020-08-07 | 2020-08-07 | EH oil supply device |
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| CN (1) | CN212717420U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938185A (en) * | 2023-02-03 | 2023-04-07 | 华能济南黄台发电有限公司 | State overhaul training device for EH control system of power plant |
-
2020
- 2020-08-07 CN CN202021622000.2U patent/CN212717420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115938185A (en) * | 2023-02-03 | 2023-04-07 | 华能济南黄台发电有限公司 | State overhaul training device for EH control system of power plant |
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