Intelligent lubricating device for fluid end

Abstract

The utility model relates to the technical field of oil field mechanical equipment, in particular to a fluid end intelligent lubricating device which comprises a box body, a lubricating pump and a control system, the control system comprises a local controller and a remote controller, the local controller is in communication connection with the remote controller, the local controller is electrically connected with the lubricating pump, and the box body is connected with the box body. A grease distributor and an integrated valve block are arranged on the side wall of the box body, and an inlet of the grease distributor is connected with an outlet of the lubricating pump through an oil supply header pipe; a plurality of groups of detection channels are arranged on the integrated valve block, each detection channel comprises a branch pipe and a detection port, one end of each branch pipe is connected with an outlet of the grease distributor through a branch pipeline, and the other end of each branch pipe is connected with a lubricating point of the fracturing truck through a branch pipeline; each detection port is provided with a pressure sensor, the pressure sensors are electrically connected with a local controller, and the local controller is used for sending received pressure signals to a remote controller. The lubricating device can solve the technical problem that an existing lubricating device is high in maintenance difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field mechanical equipment, in particular to a hydraulic end intelligent lubrication device. Background Art

[0002] A fracturing truck is a specialized vehicle used for fracturing oil, gas, and water wells. It's primarily used to inject high-pressure, high-volume fracturing fluid into the well, breaking up the formation and squeezing proppant into the cracks, thereby increasing oil and gas well production. Fracturing trucks operate in extremely harsh environments, often requiring them to operate under high temperatures, high pressures, high corrosion, and high dust levels. Therefore, each component of the fracturing truck requires specialized lubrication equipment to ensure proper operation.

[0003] Traditional lubrication methods often use centralized lubrication with lubricating oil. However, fracturing trucks have numerous and widely distributed lubrication points. Existing lubrication methods cannot precisely control lubricant distribution, resulting in waste and reduced lubrication effectiveness. To address this issue, our company previously developed a lubrication system, Publication No. CN212719122U. This system incorporates a distributor at the output of the lubrication pump to precisely distribute the oil to each lubrication outlet, achieving precise lubrication.

[0004] However, in actual use, the above-mentioned lubrication system still has the following technical problems: As the operating environment of fracturing trucks becomes increasingly harsh and complex, the reliability of the lubrication system has been affected. For example, if a branch pipe becomes clogged during the oil supply process and fails, the existing lubrication system cannot record the working status in real time, requiring shutdown and individual inspection and maintenance, which increases the difficulty and cost of maintenance. Based on this, our company has upgraded and modified the previous lubrication system to solve the problem of time-consuming and labor-intensive troubleshooting after the existing lubrication system fails. Utility Model Content

[0005] The utility model provides a hydraulic end intelligent lubrication device, which can solve the technical problem of high maintenance difficulty of existing lubrication devices.

[0006] This application provides the following technical solutions:

[0007] A hydraulic end intelligent lubrication device includes a box body and a lubrication pump arranged in the box body, and also includes a control system. The control system includes a local controller and a remote controller. The local controller is communicatively connected to the remote controller, and the local controller is electrically connected to the lubrication pump. A grease distributor and an integrated valve block are also provided on the side wall of the box body. The grease distributor is a one-inlet and multiple-outlet structure. The inlet of the grease distributor is connected to the outlet of the lubrication pump through an oil supply main pipe; a plurality of groups of detection channels are provided on the integrated valve block, each group of detection channels includes a branch pipe with openings at both ends and a detection port connected to the branch pipe, one end of the branch pipe is connected to the outlet of the grease distributor through a branch pipeline, and the other end is connected to the lubrication point of the fracturing vehicle through a branch pipeline; each detection port is provided with a pressure sensor, the pressure sensor is electrically connected to the local controller, and the local controller is used to send the received pressure signal to the remote controller.

[0008] Beneficial effects:

[0009] 1. By installing a pressure sensor on each branch pipeline, the pressure status of each branch pipeline can be detected and recorded in real time, which is convenient for rapid location of the fault point. Compared with the existing technology, there is no need to check one by one, which reduces the difficulty and time cost of maintenance.

[0010] 2. The pressure signal of each branch can be sent to the remote controller through the local controller, which is convenient for remote monitoring of the lubrication condition of the fracturing truck during operation. In particular, the working conditions of the fracturing truck in this field are complex and harsh, and it is usually impossible to check on site during operation. Remote monitoring and control can be achieved through the remote controller, thereby improving the safety of use.

[0011] 3. By setting up an integrated valve block on the box, it is easy to install and connect branch pipes and pressure sensors, saving modification costs. In addition, the integrated valve block has high scalability and flexibility. When a lubrication branch needs to be added, there is no need to reinstall or replace the entire lubrication branch. New branch pipes and pressure sensors can be expanded and added directly on the detection port and branch pipe of the integrated valve block.

[0012] Furthermore, a plurality of indicators are provided on the integrated valve block, each branch pipe corresponds to an indicator, and the indicators are electrically connected to the local controller.

[0013] Beneficial effect: By setting up an indicator and connecting it to the controller, when the pressure sensor detects an abnormal pressure on a branch pipe, a signal is sent to the local controller. The local controller is used to control the indicator at the corresponding position to light up, which can locate the fault point more intuitively and quickly, and improve maintenance and repair efficiency.

[0014] Furthermore, a heating component and a temperature sensor are also provided in the box, and both the heating component and the temperature sensor are electrically connected to the local controller, and the local controller is used to send the received temperature signal to the remote controller.

[0015] Beneficial effects: Due to the complex working environment of the fracturing truck, the temperature is usually below zero in the cold winter. By setting a heating component in the box, the lubricating grease can be heated, the fluidity of the grease can be improved, and the problem of grease blockage can be reduced; the temperature sensor can detect the temperature in the box and send the temperature signal to the controller.

[0016] Furthermore, the heating component is a heater.

[0017] Beneficial effects: The air heater can quickly generate heat and evenly distribute it to the inside of the lubrication pump. In addition, the air heater has a simple structure and is easy to install and maintain.

[0018] Furthermore, a display screen is provided on the box body, which is electrically connected to the local controller and is used to display signals from the pressure sensor and the temperature sensor.

[0019] Useful effect: Adding a display screen to the box body makes it easier to display data such as pressure and temperature at the workplace.

[0020] Furthermore, a pressure switch and a safety valve are also provided on the oil supply main pipe.

[0021] Beneficial effect: By setting a pressure switch on the oil supply main pipe, the grease pressure pumped by the lubrication pump can be detected, and when overpressure occurs, overflow is caused by the safety valve, which is beneficial to ensure the normal operation of the equipment and improve the safety of use.

[0022] Furthermore, an oil receiving pan is provided at the bottom of the box.

[0023] Beneficial effect: The grease overflowing from the safety valve enters the oil receiving pan, which is conducive to recovering the overflowed grease and preventing the grease from polluting the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the box body and lubrication pump;

[0025] Figure 2 It is the left view of the box;

[0026] Figure 3 Schematic diagram of the connections of the various components of the lubrication device;

[0027] Figure 4 It is a structural diagram of the integrated valve block. DETAILED DESCRIPTION

[0028] The following is further described in detail through specific implementation methods:

[0029] The marks in the drawings of the specification include: box body 1, lubrication pump 2, oil supply main pipe 21, pressure switch 211, safety valve 212, branch line 22, local controller 31, remote controller 32, grease dispenser 4, integrated valve block 5, branch pipe 51, pressure sensor 52, indicator 53, heating assembly 6, temperature sensor 61.

[0030] Example 1

[0031] like Figure 1 As shown, a hydraulic end intelligent lubrication device includes a box body 1 and a lubrication pump 2 arranged in the box body 1. Specifically, the outer shell of the box body 1 in this embodiment is made of carbon steel spraying to increase the service life of the box body 1 in harsh environments. Figure 3 As shown, it also includes a control system, which includes a local controller 31 and a remote controller 32. The local controller 31 is communicatively connected to the remote controller 32, and the local controller 31 is electrically connected to the lubrication pump 2. Specifically, in this embodiment, the lubrication pump 2 adopts an existing electric lubrication pump, and the local controller 31 is a controller provided by the electric lubrication pump 2. By adding a remote communication module (not shown in the figure) in the box body 1, the remote communication module is used to communicate with the remote controller 32. For example, in this embodiment, a module with functions such as digital quantity acquisition control, analog quantity acquisition output, and 485 Modbus RTU communication can be preferably used to realize remote transmission of pressure signals, liquid level signals, etc. in the system to the user's PLC, which is convenient for user monitoring and control. In other embodiments other than this embodiment, a controller with its own communication module can also be used as the local controller 31.

[0032] like Figure 2 As shown, a grease distributor 4 and an integrated valve block 5 are further provided on the side wall of the box body 1. The grease distributor 4 and the integrated valve block 5 are fixed to the box body 1 through a mounting bracket. The grease distributor 4 is a one-inlet and multiple-outlet structure. For example, the existing MSP distributor can be used. The inlet of the grease distributor 4 is connected to the outlet of the lubrication pump 2 through the oil supply main pipe 21; in this embodiment, a pressure switch 211 and a safety valve 212 are provided on the oil supply main pipe 21. The pressure switch 211 can detect the pressure of the grease pumped by the lubrication pump 2. When overpressure occurs, excess grease overflows through the safety valve 212, which is beneficial to ensure the normal operation of the equipment and improve the safety of use; better, an oil receiving pan (not shown in the figure) is also provided at the bottom of the box body 1, and the grease overflowing from the safety valve 212 enters the oil receiving pan, which is beneficial to recover the overflowed grease and prevent the grease from polluting the surrounding environment.

[0033] like Figure 4As shown, the integrated valve block 5 is provided with several groups of detection channels, each group of detection channels includes a branch pipe 51 with openings at both ends and a detection port connected to the branch pipe 51. One end of the branch pipe 51 is connected to the outlet of the grease dispenser 4 through the branch pipe 22, and the other end is connected to the lubrication point of the fracturing vehicle through the branch pipe 22. Specifically, the branch pipe 22 is connected to both ends of the branch pipe 51 through threads, and a sealing ring is provided at the connection end; each detection port is provided with a pressure sensor 52, and the pressure sensor 52 is electrically connected to the local controller 31. The local controller 31 sends the received pressure signal to the remote controller 32 through the communication module. The remote controller 32 adopts a PLC controller.

[0034] In this embodiment, an integrated valve block 5 is provided on the housing 1, which facilitates the installation of the connecting branch pipes 22 and the pressure sensor 52, thereby saving modification costs. In addition, the integrated valve block 5 has high scalability and flexibility. When a lubrication branch needs to be added or replaced, there is no need to reinstall or replace the entire lubrication branch. A new branch pipe 22 and a pressure sensor 52 can be directly expanded and added on the detection port and the branch pipe 51 of the integrated valve block 5.

[0035] More preferably, a plurality of indicators 53 are provided on the integrated valve block 5, and each branch pipe 51 corresponds to an indicator 53, and the indicator 53 is electrically connected to the local controller 31; the indicator 53 can be an indicator light. When the pressure sensor 52 detects that the pressure on a branch pipe 51 is abnormal, a signal is sent to the local controller 31, and the local controller 31 is used to control the indicator light at the corresponding position to light up, so that maintenance personnel can locate the fault point more intuitively and quickly, thereby improving maintenance and repair efficiency.

[0036] Better as Figure 1 As shown, the housing 1 is also provided with a heating assembly 6 and a temperature sensor 61. Both the heating assembly 6 and the temperature sensor 61 are electrically connected to the local controller 31, which is used to transmit the received temperature signal to the remote controller 32. Specifically, the heating assembly 6 is a heater, which can quickly generate heat and evenly distribute it to the interior of the lubrication pump 2 to heat the grease. Furthermore, the heater has a simple structure and is easy to install and maintain. Because the operating environment of a fracturing truck is complex, especially in the cold winter when temperatures often drop below zero, the installation of the heating assembly 6 within the housing 1 can heat the lubricating grease, improving its fluidity and reducing grease clogging. The temperature sensor 61 can detect the temperature within the housing 1 and transmit the temperature signal to the controller.

[0037] The box body 1 is also provided with a display screen (not shown in the figure), which is electrically connected to the local controller 31 and is used to display the signals of the pressure sensor 52 and the temperature sensor 61; the box body 1 is also provided with a forced lubrication button and an overpressure indicator light.

[0038] When in use, first use the branch pipeline 22 to connect the grease distributor 4 and the integrated valve block 5 according to the number of branches that need to be lubricated on the fracturing truck, and set the pressure sensor 52 and the indicator 53 at the corresponding position of the integrated valve block 5; then, start the lubrication pump 2, and the pump body pumps the grease in the lubricating oil tank to the oil supply main pipe 21, and then divides it into a trunk and branch through the grease distributor 4, and finally reaches the lubrication point; during the lubrication process, the pressure switch 211 on the oil supply main pipe 21 and the pressure sensor 52 on the branch can detect the pressure signal in real time. When the pressure sensor 52 on a branch detects overpressure, the local controller 31 controls the indicator light at the corresponding position to light up, and at the same time uses the communication module to send the pressure signals on each branch to the remote user PLC for remote monitoring.

[0039] The above is only an embodiment of the present invention. The present invention is not limited to the field involved in this implementation case. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A fluid end intelligent lubrication device, comprising a housing and a lubrication pump disposed in the housing, characterized in that: It also includes a control system, which includes a local controller and a remote controller. The local controller is communicatively connected to the remote controller, and the local controller is electrically connected to the lubrication pump. A grease dispenser and an integrated valve block are also provided on the side wall of the box. The grease dispenser is a one-inlet and multiple-outlet structure, and the inlet of the grease dispenser is connected to the outlet of the lubrication pump through the oil supply main pipe; a plurality of detection channels are provided on the integrated valve block, each group of detection channels includes a branch pipe with openings at both ends and a detection port connected to the branch pipe, one end of the branch pipe is connected to the outlet of the grease dispenser through a branch pipeline, and the other end is connected to the lubrication point of the fracturing vehicle through a branch pipeline; each detection port is provided with a pressure sensor, the pressure sensor is electrically connected to the local controller, and the local controller is used to send the received pressure signal to the remote controller.

2. The intelligent lubrication device for a hydraulic end according to claim 1, characterized in that: The integrated valve block is also provided with a plurality of indicators, each branch pipe corresponds to an indicator, and the indicator is electrically connected to the local controller.

3. The intelligent lubrication device for a hydraulic end according to claim 2, characterized in that: A heating component and a temperature sensor are also provided in the box. Both the heating component and the temperature sensor are electrically connected to a local controller. The local controller is used to send a received temperature signal to a remote controller.

4. The intelligent lubrication device for a hydraulic end according to claim 3, characterized in that: The heating component is a heater.

5. The intelligent lubrication device for a hydraulic end according to claim 4, characterized in that: The box body is also provided with a display screen, which is electrically connected to the local controller and is used to display signals from the pressure sensor and the temperature sensor.

6. The intelligent lubrication device for a hydraulic end according to claim 5, characterized in that: The oil supply main pipe is also provided with a pressure switch and a safety valve.

7. The intelligent lubrication device for a hydraulic end according to claim 6, characterized in that: An oil receiving pan is also provided at the bottom of the box body.

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