Novel high-pressure plunger pump forced lubrication device

Abstract

The utility model discloses a novel high-pressure plunger pump forced lubrication device which comprises a pulse gear pump, the pulse gear pump supplies and recycles lubricating oil to a crankcase of a plunger pump through an oil inlet and outlet pipe, the recycled lubricating oil is supplied to the input end of the pulse gear pump after passing through an oil cooler, and a lubrication temperature detection device is arranged on the crankcase. The forced lubrication device is composed of an oil inlet and outlet pipe, a pulse gear pump, a temperature sensor, a transmitter, an oil cooler and a DCS. Lubricating oil in a crankcase of the high-pressure plunger pump is pumped into the crankshaft arm, the crosshead and the connecting rod through the pulse gear pump to enter the bearing bush after passing through the oil cooler, the forced lubrication effect inside the crankshaft and the bearing bush is achieved, the oil temperature can be effectively controlled through the oil cooler, the lubrication effect is ensured, the operation efficiency of the plunger pump is improved, and the failure rate of the plunger pump is reduced. Remote control can be carried out in a workshop through a DCS, lubrication can be automatically controlled through an in-situ controller, and automatic lubrication can be achieved only by setting lubrication parameters and commands through the DCS.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure plunger pumps, in particular to a novel forced lubrication device for high-pressure plunger pumps. Background Art

[0002] The high-pressure plunger pump uses the method of throwing the lubricating oil to the oil filling hole on the connecting rod during the rotation of the crankshaft. The lubrication is carried out by the movement of the equipment itself, which is relatively random. When the lubricating oil deteriorates or the oil temperature rises, the viscosity of the lubricating oil does not meet the requirements, causing wear and damage to the bearings and crankshafts during operation. The lubrication effect is not ideal. Therefore, technology is needed to ensure the normal lubrication of the plunger pump crankcase. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a new type of forced lubrication device for high-pressure plunger pumps, which can centrally control the lubrication condition of the high-pressure plunger pumps through the workshop central control DCS system, reduce human operating errors, improve the reliability of equipment lubrication, and reduce the possibility of equipment accidents.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A new type of high-pressure plunger pump forced lubrication device includes a pulse gear pump. The pulse gear pump supplies and recovers lubricating oil to the crankcase of the plunger pump through inlet and outlet oil pipes. The recovered lubricating oil passes through an oil cooler and then is supplied to the input end of the pulse gear pump. A lubrication temperature detection device is provided on the crankcase.

[0006] The above-mentioned lubrication temperature detection device includes a temperature sensor installed in the crankcase, and the sensing signal of the temperature sensor is converted by a transmitter and sent to the DCS system.

[0007] In a preferred solution, the lubrication temperature detection device includes a temperature sensor installed in the crankcase, and the sensing signal of the temperature sensor is converted and sent to the controller.

[0008] The crankcase is also provided with a vibration sensor, and the sensing signal of the vibration sensor is converted and sent to the controller.

[0009] The output end of the controller is electrically connected to the pulse gear pump control relay, and the start and stop of the pulse gear pump is controlled by the pulse gear pump control relay.

[0010] The output end of the controller is electrically connected to a cooling control relay, and the start and stop of the oil cooler are controlled by the cooling control relay.

[0011] The above-mentioned cooling control relays are provided in plurality, and the plurality of cooling control relays control different analog voltages input to the driver of the oil cooler, corresponding to different cooling powers.

[0012] The controller is connected to the display screen for communication, and the output end of the controller is electrically connected to the alarm.

[0013] The utility model provides a novel forced lubrication device for a high-pressure plunger pump. A pulse gear pump pumps the lubricating oil in the crankcase of the high-pressure plunger pump through an oil cooler and then into the crankshaft arm, crosshead, connecting rod and bearing shell, thereby achieving forced lubrication inside the crankshaft and bearing shell. The oil temperature can be effectively controlled through the oil cooler to ensure the lubrication effect, improve the operating efficiency of the plunger pump, and reduce its failure rate. The device can be remotely controlled in the workshop through a DCS, and lubrication can be controlled automatically through a controller installed on site. The DCS only needs to set lubrication parameters and commands to achieve automatic lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic structural diagram of the plunger pump lubrication device of the utility model;

[0016] Figure 2 This is the connection diagram of the controller;

[0017] Figure 3 This is a schematic diagram of the control circuit of the oil cooler;

[0018] Figure 4 This is a schematic diagram of the control circuit of the pulse gear pump.

[0019] In the figure: oil inlet and outlet pipes 1, pulse gear pump 2, temperature sensor 3, transmitter 4, oil cooler 5, DCS system 6, oil filling hole 7, crankcase 8, pump head 9, controller 10, display 11, vibration sensor 12, cooling control relay 13, pulse gear pump control relay 14, alarm 15. DETAILED DESCRIPTION

[0020] like Figure 1 As shown in the figure, a new type of high-pressure plunger pump forced lubrication device includes a pulse gear pump 2. The pulse gear pump 2 supplies and recovers lubricating oil to the crankcase 8 of the plunger pump through the inlet and outlet oil pipes 1. The recovered lubricating oil passes through the oil cooler 5 and is then supplied to the input end of the pulse gear pump 2. A lubricating temperature detection device is provided on the crankcase 8.

[0021] The lubrication temperature detection device includes a temperature sensor 3 installed in the crankcase 8 . The sensing signal of the temperature sensor 3 is converted by the transmitter 4 and then sent to the DCS system 6 .

[0022] like Figure 2As shown in , in a preferred solution, the lubrication temperature detection device includes a temperature sensor 3 installed in the crankcase 8, and the sensing signal of the temperature sensor 3 is converted and sent to the controller 10.

[0023] like Figure 2 As shown in , the crankcase 8 is further provided with a vibration sensor 12 , and the sensing signal of the vibration sensor 12 is converted and sent to the controller 10 .

[0024] like Figure 4 As shown in , the output end of the controller 10 is electrically connected to the pulse gear pump control relay 14 , and the start and stop of the pulse gear pump 2 is controlled by the pulse gear pump control relay 14 .

[0025] The output end of the controller 10 is electrically connected to the cooling control relay 13 , and the start and stop of the oil cooler 5 are controlled by the cooling control relay 13 .

[0026] like Figure 3 As shown in FIG, the cooling control relay 13 is provided in plurality, and the plurality of cooling control relays 13 control different analog voltages input to the driver of the oil cooler 5, corresponding to different cooling powers.

[0027] like Figure 2 As shown in , the controller 10 is in communication connection with the display screen 11 , and the output end of the controller 10 is electrically connected with the alarm 15 .

[0028] Example 1:

[0029] A novel forced lubrication device for a high-pressure plunger pump comprises an oil inlet and outlet pipe 1, a pulse gear pump 2, a temperature sensor 3, a transmitter 4, an oil cooler 5, a DCS system 6 and an oil filling hole 7.

[0030] The crankcase lubricating oil enters the inlet oil pipe 1, is first cooled by the oil cooler 5, and is pumped to the oil filling hole 7 by the pulse gear pump 2.

[0031] A temperature sensor 3 is installed in the crankcase, and the resistance signal is sent to the transmitter 4, and the data is processed by the DCS system 6.

[0032] A sewage outlet valve 7 is provided in the hot water outlet pipe 5 .

[0033] Furthermore, the crankshaft operates at a speed of 60 r / min, and the pulse gear pump pulse interval is 15 s / time.

[0034] Furthermore, the temperature sensor adopts PT100.

[0035] Furthermore, a high temperature alarm is set in the DCS system to remind you to check and replace the lubricating oil when the oil temperature is higher than 35℃, and the high-pressure plunger pump is stopped when the oil temperature is higher than 50℃.

[0036] Example 2:

[0037] The high-pressure plunger pump forced lubrication device described in Example 1 operates as follows: During normal operation, the lubricating oil in the crankcase is transported via the inlet and outlet oil pipes to the oil cooler 5 for cooling. It is then pumped by the pulse gear pump 2 to the plunger connecting rod oil filling hole 7, where it is periodically forced to fill the crankshaft and bearings with oil to ensure stable operation of the high-pressure plunger pump. When friction in the crankcase becomes severe and the temperature rises, the temperature sensor 3, through the transmitter 4, is detected and processed by the DCS system 6. If the alarm value is exceeded, the on-site staff are notified to promptly inspect and replace the lubricating oil. When the interlock value set by the DCS system 6 is reached, a pump stop command is triggered for the high-pressure plunger pump, and a maintenance personnel is notified to inspect and repair the plunger pump.

[0038] Example 3:

[0039] like Figure 2-4 As shown in the figure, the lubrication condition of the plunger pump is monitored using a combination of a temperature sensor 3 and a vibration sensor 12. When the crankcase lubrication is abnormal or the crankshaft rotation fails, the vibration signal or acceleration detection of the crankcase will change. By detecting the vibration signal or acceleration, it is determined whether lubrication abnormality or mechanical failure occurs, and the operation of the lubrication device is adjusted. When the vibration signal or acceleration signal exceeds the threshold, an alarm can be output.

Claims

1. A new type of high-pressure plunger pump forced lubrication device, characterized in that: The invention comprises a pulse gear pump (2), which supplies and recovers lubricating oil to a crankcase (8) of a plunger pump through an inlet and outlet oil pipe (1); the recovered lubricating oil passes through an oil cooler (5) and is then supplied to the input end of the pulse gear pump (2); and a lubricating temperature detection device is provided on the crankcase (8).

2. A novel high-pressure plunger pump forced lubrication device according to claim 1, characterized in that: The lubrication temperature detection device includes a temperature sensor (3) installed in a crankcase (8), and the sensing signal of the temperature sensor (3) is converted by a transmitter (4) and then sent to a DCS system (6).

3. A novel forced lubrication device for a high-pressure plunger pump according to claim 1, characterized in that: The lubrication temperature detection device comprises a temperature sensor (3) installed in the crankcase (8), and the sensing signal of the temperature sensor (3) is converted and sent to the controller (10).

4. A novel forced lubrication device for a high-pressure plunger pump according to claim 3, characterized in that: The crankcase (8) is also provided with a vibration sensor (12), and the sensing signal of the vibration sensor (12) is converted and sent to the controller (10).

5. A novel forced lubrication device for a high-pressure plunger pump according to claim 4, characterized in that: The output end of the controller (10) is electrically connected to the pulse gear pump control relay (14), and the start and stop of the pulse gear pump (2) is controlled by the pulse gear pump control relay (14).

6. A novel forced lubrication device for a high-pressure plunger pump according to claim 5, characterized in that: The output end of the controller (10) is electrically connected to the cooling control relay (13), and the start and stop of the oil cooler (5) are controlled by the cooling control relay (13).

7. A novel forced lubrication device for a high-pressure plunger pump according to claim 6, characterized in that: The cooling control relays (13) are provided in plurality, and the plurality of cooling control relays (13) control different analog voltages input to the driver of the oil cooler (5), corresponding to different cooling powers.

8. A novel forced lubrication device for a high-pressure plunger pump according to claim 7, characterized in that: The controller (10) is communicatively connected to the display screen (11), and the output end of the controller (10) is electrically connected to the alarm (15).

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