Operation monitoring method of slurry type shield pump and related device

Abstract

The invention discloses an operation monitoring method and device for a slurry type shield pump, monitoring equipment and a computer readable storage medium. The method comprises the steps that the monitoring device sets a valve to be in a monitoring mode; wherein the monitoring mode comprises the steps that a first valve located between the auxiliary metering pump and the main shield pump is opened, a second valve located between the anti-shock pressure gauge and the pipeline is opened, and a third valve located at an outlet of the pipeline is closed; wherein the anti-shock pressure gauge is arranged on a pipeline between the auxiliary metering pump and the main shield pump; the auxiliary metering pump is started, and the pointer state of the anti-shock pressure gauge is obtained; judging whether the pointer state is a pulse type jitter state or not; if yes, sending a normal operation signal of the metering pump; and if not, sending a metering pump alarm signal. The metering pump is monitored, the running state of the shield pump is protected, and the shield pump is prevented from being damaged by faults of the metering pump.

Description

Technical Field

[0001] The present invention belongs to the technical field of monitoring equipment, and more specifically, relates to an operation monitoring method, an operation monitoring device, a monitoring device, and a computer-readable storage medium for a mud-type shielded pump. Background Art

[0002] In the chemical production process, it is often necessary to transport toxic or harmful media with high solid content. Traditional pumps usually use mechanical seals when transporting such media, but this method has the risk of leakage, posing a serious threat to the environment and the safety of operators.

[0003] In the related technology, the industry generally adopts a slurry-type shielded pump with an auxiliary diaphragm metering pump. This pump uses the reciprocating motion of the diaphragm metering pump diaphragm to pulse-suction and discharge the liquid. The high-pressure clear liquid generated fills the pump cavity, and seals the high-solid content medium particles transported by the pump through the mouth ring gap to prevent them from entering the pump cavity, thereby reducing the wear on the shielding sleeve and the rotor and improving the adaptability of the pump to working conditions. However, the metering pump is directly connected to the main pump, and it is very common for the metering pump to fail to pressurize due to reasons such as the check valve group being stuck or not sealed. In this case, the pump motor and transmission mechanism are still running, but it will not be reflected in the distributed control system and the electrical system. The pump continues to run, lacking the supplementary sealing effect of the high-pressure clear liquid, and the solid particles in the pump inlet medium will enter the pump cavity, exceeding the allowable working range of the shielded pump, causing serious wear and damage to the machine pump.

[0004] Therefore, how to monitor the auxiliary metering pump in time is a key issue that technicians in this field are concerned about. Summary of the invention

[0005] The purpose of the present application is to provide an operation monitoring method, an operation monitoring device, a monitoring equipment, and a computer-readable storage medium for a mud-type canned pump, so as to monitor the metering pump, protect the operating state of the canned pump, and prevent the failure of the metering pump from damaging the canned pump.

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides an operation monitoring method of a mud type canned motor pump, comprising:

[0007] The monitoring device sets the valve to a monitoring mode; wherein the monitoring mode includes: a first valve between the auxiliary metering pump and the main shielded pump is opened, a second valve between the seismic pressure gauge and the pipeline is opened, and a third valve at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump;

[0008] Starting the auxiliary metering pump and obtaining the pointer status of the seismic pressure gauge;

[0009] Determining whether the pointer state is a pulse jitter state;

[0010] If so, a signal indicating that the metering pump is operating normally is sent;

[0011] If not, a metering pump alarm signal is sent.

[0012] Optionally, also include:

[0013] When receiving the maintenance signal, the monitoring device sets the valve to a maintenance mode; wherein the maintenance mode includes: the first valve is closed, and the second valve and the third valve are opened.

[0014] Optionally, also include:

[0015] When the auxiliary metering pump fails to work, the monitoring device sets the valve to a standby mode and starts the standby metering pump; wherein the standby mode includes: the first valve is closed, and the second valve and the third valve are opened; wherein the auxiliary metering pump is a metering pump arranged at the outlet of the pipeline.

[0016] Optionally, obtain the pointer status of the seismic pressure gauge, including:

[0017] The pointer state of the seismic pressure gauge is acquired through a pressure transmitter, and the pressure data as the pointer state is sent to a distributed control system; wherein the pressure transmitter is located between the seismic pressure gauge and the second valve.

[0018] Optionally, determining whether the pointer state is a pulse jitter state includes:

[0019] The distributed control system determines whether the pressure data is in a straight line state within a preset time;

[0020] If yes, it is determined that the pointer state is not a pulse jitter state;

[0021] If not, it is determined that the pointer state is a pulse jitter state.

[0022] Optionally, the seismic-resistant pressure gauge is used to monitor the operating status of the auxiliary metering pump; the first valve is used to cut off the main pump and the metering pump; the second valve is used to cut off the seismic-resistant pressure gauge; and the third valve is used to connect the standby metering pump.

[0023] Optionally, also include:

[0024] When the metering pump alarm signal is received, the alarm signal is sent through a preset path.

[0025] The present application also provides an operation monitoring device for a slurry type canned motor pump, comprising:

[0026] A valve operation module, used to set the valve to a monitoring mode; wherein the monitoring mode includes: a first valve located between the auxiliary metering pump and the main shielded pump is opened, a second valve located between the seismic pressure gauge and the pipeline is opened, and a third valve located at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump;

[0027] A pressure state acquisition module, used to start the auxiliary metering pump and acquire the pointer state of the seismic pressure gauge;

[0028] A pressure state judgment module, used to judge whether the pointer state is a pulse-type jitter state;

[0029] A normal signal sending module, used for sending a metering pump normal operation signal when the pointer state is in a pulse jitter state;

[0030] The alarm module is used to send a metering pump alarm signal when the pointer state is not in a pulse-like jitter state.

[0031] The present application also provides a monitoring device, comprising:

[0032] Memory for storing computer programs;

[0033] A processor is used to implement the steps of the operation monitoring method as described above when executing the computer program.

[0034] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the operation monitoring method described above are implemented.

[0035] The present application provides an operation monitoring method for a mud-type shielded pump, comprising: a monitoring device sets a valve to a monitoring mode; wherein the monitoring mode comprises: a first valve located between an auxiliary metering pump and a main shielded pump is opened, a second valve located between a seismic pressure gauge and a pipeline is opened, and a third valve located at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump; the auxiliary metering pump is started, and the pointer state of the seismic pressure gauge is obtained; it is determined whether the pointer state is a pulsed jitter state; if so, a metering pump normal operation signal is sent; if not, a metering pump alarm signal is sent.

[0036] It has the following beneficial effects:

[0037] Intuitive monitoring and abnormality monitoring: By adding a seismic-resistant pressure gauge, the present invention enables on-site inspection personnel to intuitively observe the working status of the metering pump and discover abnormal conditions in time, thereby protecting the main pump from damage.

[0038] Improve operational safety: The intuitive pulse-type needle jitter reduces the requirements for professional knowledge of inspectors and reduces safety risks caused by improper operation.

[0039] Automatic monitoring and alarm: By adding a pressure transmitter, the pressure signal is transmitted to the distributed control system to achieve automatic monitoring. The distributed control system can automatically process the pressure data and issue a pop-up alarm when an abnormality is detected, which improves the fault response speed.

[0040] Improved maintenance efficiency: Through the setting of the valve, the metering pump or the main pump can be easily inspected and repaired separately without removing excess materials and replacing them. This improves maintenance efficiency, especially when dealing with reactive or crystallizable materials.

[0041] Reduce maintenance costs: The setting of the first valve allows the metering pump to be repaired without interfering with the operation of the main pump, reducing downtime and material loss, thereby reducing maintenance costs.

[0042] Improve equipment reliability: Through the setting of the third valve, it is possible to quickly switch to the backup metering pump to ensure the continuous operation of the main pump, reduce the risk of production interruption due to metering pump failure, and improve the reliability of the overall equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0044] Figure 1 A flow chart of an operation monitoring method of a slurry canned motor pump provided in an embodiment of the present application;

[0045] Figure 2 A structural diagram of an operation monitoring method of a slurry canned motor pump provided in an embodiment of the present application;

[0046] Figure 3 A schematic diagram of the structure of an operation monitoring device for a slurry canned motor pump provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the structure of the monitoring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The core of this application is to provide an operation monitoring method, an operation monitoring device, a monitoring equipment, and a computer-readable storage medium for a mud-type shielded pump, so as to monitor the metering pump, protect the operating state of the shielded pump, and prevent the failure of the metering pump from damaging the shielded pump.

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The following is an example of an operation monitoring method for a mud-type canned motor pump provided by the present application.

[0051] Please refer to Figure 1 , Figure 1 A flow chart of an operation monitoring method for a mud-type canned motor pump provided in an embodiment of the present application.

[0052] Please refer to Figure 2 , Figure 2 A structural diagram of an operation monitoring method for a mud-type canned motor pump provided in an embodiment of the present application.

[0053] In the figure: PG is a seismic pressure gauge, PT is a pressure transmitter, DCS display is a display of a distributed control system, F1 is the first valve, F2 is the second valve, and F3 is the third valve.

[0054] In this embodiment, the method may include:

[0055] S101, the monitoring device sets the valve to a monitoring mode; wherein the monitoring mode includes: a first valve between the auxiliary metering pump and the main shielded pump is opened, a second valve between the seismic pressure gauge and the pipeline is opened, and a third valve at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump;

[0056] This step is to set the valve of the monitoring device to the monitoring mode. The monitoring mode includes: the first valve between the auxiliary metering pump and the main shielded pump is opened, the second valve between the seismic pressure gauge and the pipeline is opened, and the third valve at the outlet of the pipeline is closed; wherein the seismic pressure gauge is set in the pipeline between the auxiliary metering pump and the main shielded pump.

[0057] That is to say, in this embodiment, a corresponding anti-vibration pressure gauge is firstly arranged in the pipeline of the shielded pump. Since the pressure of the shielded pump is in a pulsed state during normal operation, the pointer state in the anti-vibration pressure gauge can be used to determine whether the auxiliary metering pump is in a normal operating state.

[0058] S102, starting the auxiliary metering pump and obtaining the pointer status of the anti-seismic pressure gauge;

[0059] Based on S101, this step aims to start the auxiliary metering pump and obtain the pointer state of the seismic pressure gauge. Based on the corresponding settings of the pipeline in S101, this step obtains the pointer state of the seismic pressure gauge to monitor the state of the auxiliary metering gauge.

[0060] The pointer state may be obtained by manual observation, by pressure signal, or by monitoring equipment (eg, camera equipment).

[0061] The step of obtaining the pointer state of the seismic pressure gauge may include:

[0062] The pointer state of the seismic pressure gauge is obtained through the pressure transmitter, and the pressure data as the pointer state is sent to the distributed control system; wherein the pressure transmitter is located between the seismic pressure gauge and the second valve.

[0063] It can be seen that this optional solution mainly explains how to obtain the pointer state. In this optional solution, the pointer state of the seismic pressure gauge is obtained through a pressure transmitter, and the pressure data as the pointer state is sent to the distributed control system. That is, a pressure transmitter is set between the seismic pressure gauge and the second valve to obtain the pressure change in the pipeline, that is, to obtain pressure data. Among them, the pressure data represents the pointer state.

[0064] S103, determining whether the pointer state is a pulse jitter state;

[0065] Based on S102, this step is to determine whether the pointer state is a pulse-type jitter state. If it is a pulse-type jitter state, it means that the metering pump is normal and there is no failure such as pressure relief. If it is not a pulse-type state, it means that the metering pump has a fault.

[0066] Furthermore, this step may include:

[0067] Step 1, the distributed control system determines whether the pressure data is in a straight line state within a preset time;

[0068] Step 2: If yes, determine that the pointer state is not a pulse jitter state;

[0069] Step 3: If not, determine that the pointer state is a pulse jitter state.

[0070] It can be seen that this step is intended to explain how to make a judgment. In this embodiment, it is to judge whether the pressure data is in a linear state within a preset time. If it is a linear state, it means that the pressure has not changed, and there is no pulse-like change, and there is a problem with the metering pump. If it is not a linear state, it means that the pressure of the metering pump can be transmitted normally and the metering pump is normal.

[0071] S104, if yes, send a signal that the metering pump is operating normally;

[0072] Based on S103, this step aims to send a normal signal when a pulse jitter state exists.

[0073] S105, if not, send a metering pump alarm signal.

[0074] Based on S103, this step aims to send an alarm signal when there is no pulse jitter state.

[0075] The seismic pressure gauge in this embodiment is used to monitor the operating status of the auxiliary metering pump; the first valve is used to cut off the main pump and the metering pump; the second valve is used to cut off the seismic pressure gauge; and the third valve is used to connect the spare metering pump.

[0076] This embodiment may also include:

[0077] When receiving the maintenance signal, the monitoring device sets the valve to a maintenance mode; wherein the maintenance mode includes: the first valve is closed, and the second valve and the third valve are opened.

[0078] It can be seen that this optional solution mainly explains how to set the on-off of the pipeline during maintenance. Among them, in the maintenance state, the metering pump and the main pump are disconnected in the pipeline, and then the corresponding maintenance operation is performed.

[0079] This embodiment may also include:

[0080] When the auxiliary metering pump fails to work, the monitoring device sets the valve to a standby mode and starts the standby metering pump; wherein the standby mode includes: the first valve is closed, and the second valve and the third valve are opened; the auxiliary metering pump is a metering pump arranged at the outlet of the pipeline.

[0081] It can be seen that this optional solution mainly explains how to enable the backup metering pump when the auxiliary metering pump fails to work.

[0082] This embodiment may also include:

[0083] When a metering pump alarm signal is received, the alarm signal is sent through a preset path.

[0084] This optional solution mainly describes how to send an alarm signal. Among them, the preset path can be to prompt through sound and light, or to prompt through voice message, or to prompt through text message.

[0085] It can be seen that this embodiment has the following beneficial effects:

[0086] Intuitive monitoring and abnormality monitoring: By adding a seismic-resistant pressure gauge, the present invention enables on-site inspection personnel to intuitively observe the working status of the metering pump and discover abnormal conditions in time, thereby protecting the main pump from damage.

[0087] Improve operational safety: The intuitive pulse-type needle jitter reduces the requirements for professional knowledge of inspectors and reduces safety risks caused by improper operation.

[0088] Automatic monitoring and alarm: By adding a pressure transmitter, the pressure signal is transmitted to the distributed control system to achieve automatic monitoring. The distributed control system can automatically process the pressure data and issue a pop-up alarm when an abnormality is detected, which improves the fault response speed.

[0089] Improved maintenance efficiency: Through the setting of the valve, the metering pump or the main pump can be easily inspected and repaired separately without removing excess materials and replacing them. This improves maintenance efficiency, especially when dealing with reactive or crystallizable materials.

[0090] Reduce maintenance costs: The setting of the first valve allows the metering pump to be repaired without interfering with the operation of the main pump, reducing downtime and material loss, thereby reducing maintenance costs.

[0091] Improve equipment reliability: Through the setting of the third valve, it is possible to quickly switch to the backup metering pump to ensure the continuous operation of the main pump, reduce the risk of production interruption due to metering pump failure, and improve the reliability of the overall equipment.

[0092] The operation monitoring method of a mud-type canned motor pump provided in the present application is further described below through another specific embodiment.

[0093] In this embodiment, the method may include:

[0094] Step 1, installation of monitoring device;

[0095] Add a seismic pressure gauge on the pipeline between the auxiliary metering pump and the main pump to monitor the operating status of the metering pump in real time on site. At the same time, install a pressure transmitter to transmit the pressure signal to the distributed control system.

[0096] Step 2, configuration of the valve system;

[0097] Three valves are added to the pipeline, namely the first valve, the second valve and the third valve. The first valve is used to cut off the connection between the main pump and the metering pump; the second valve is used to cut off the seismic pressure gauge PG (pressure gauge); the third valve is used to connect the standby metering pump.

[0098] Step 3, starting and monitoring the metering pump;

[0099] Open the first and second valves, close the third valve, and start the metering pump. Observe whether the needle of the seismic pressure gauge shakes in a pulse-like manner to determine whether the metering pump is operating normally. If the needle shakes in a pulse-like manner, it indicates that the metering pump is operating normally.

[0100] Step 4, inspection and maintenance of metering pump;

[0101] If the metering pump needs to be inspected or repaired, the second valve and the third valve are opened and the first valve is closed. In this way, the metering pump can be operated alone without affecting the operation of the main pump.

[0102] Step 5, activation of the standby metering pump;

[0103] When the metering pump fails or needs maintenance, the connection between the main pump and the metering pump can be cut off by opening the second valve and the third valve and closing the first valve, and the backup metering pump can be activated to ensure the normal operation of the main pump.

[0104] Step 6, automated monitoring of distributed control systems;

[0105] The pressure transmitter PT transmits the pressure signal to the distributed control system, and the distributed control system's automated processing and pulse pressure monitoring and judgment program module enable real-time monitoring of the metering pump's working status. If the pressure signal is straight for a certain period of time, the distributed control system will issue a pop-up alarm, indicating that the metering pump may not be working properly.

[0106] Among them, the added first valve allows the metering pump and the main pump to be checked and repaired separately without discharging excess materials and replacement, which is especially suitable for materials that are easy to react with components in the air or are easy to crystallize.

[0107] Among them, the addition of the third valve can connect to the spare metering pump at any time, reduce the cost of directly backing up a whole set of mud-type shielded pumps, and improve the reliability and economy of the pump system.

[0108] It can be seen that this embodiment monitors the metering pump through the newly arranged anti-seismic pressure gauge, protects the operating state of the canned pump, and prevents the canned pump from being damaged by the failure of the metering pump.

[0109] An operation monitoring device for a mud-type canned motor pump provided in an embodiment of the present application is introduced below. The operation monitoring device for a mud-type canned motor pump and an operation monitoring method for a mud-type canned motor pump described below can refer to each other.

[0110] Please refer to Figure 3 , Figure 3 A schematic structural diagram of an operation monitoring device for a mud-type canned motor pump provided in an embodiment of the present application.

[0111] In this embodiment, the device may include:

[0112] The valve operation module 100 is used to set the valve to a monitoring mode; wherein the monitoring mode includes: a first valve located between the auxiliary metering pump and the main shielded pump is opened, a second valve located between the seismic pressure gauge and the pipeline is opened, and a third valve located at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump;

[0113] The pressure state acquisition module 200 is used to start the auxiliary metering pump and obtain the pointer state of the seismic pressure gauge;

[0114] The pressure state determination module 300 is used to determine whether the pointer state is a pulse-like jitter state;

[0115] The normal signal sending module 400 is used to send a metering pump normal operation signal when the pointer state is in a pulse jitter state;

[0116] The alarm module 500 is used to send a metering pump alarm signal when the pointer state is not in a pulse-like jitter state.

[0117] This application also provides monitoring equipment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of the monitoring device provided in the embodiment of the present application. The monitoring device may include:

[0118] Memory for storing computer programs;

[0119] The processor is used to implement the steps of any of the above-mentioned operation monitoring methods for the mud-type canned motor pump when executing the computer program.

[0120] like Figure 4 , which is a schematic diagram of the structure of the monitoring device, the monitoring device may include: a processor 10, a memory 11, a communication interface 12 and a communication bus 13. The processor 10, the memory 11 and the communication interface 12 communicate with each other through the communication bus 13.

[0121] In the embodiment of the present application, the processor 10 may be a central processing unit (CPU), an application specific integrated circuit, a digital signal processor, a field programmable gate array or other programmable logic devices.

[0122] The processor 10 may call a program stored in the memory 11. Specifically, the processor 10 may execute operations in an embodiment of the abnormal IP identification method.

[0123] The memory 11 is used to store one or more programs, which may include program codes, and the program codes include computer operation instructions. In the embodiment of the present application, the memory 11 at least stores programs for implementing the following functions:

[0124] The monitoring device sets the valve to a monitoring mode; wherein the monitoring mode includes: a first valve between the auxiliary metering pump and the main shielded pump is opened, a second valve between the seismic pressure gauge and the pipeline is opened, and a third valve at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump;

[0125] Start the auxiliary metering pump and obtain the pointer status of the anti-seismic pressure gauge;

[0126] Determine whether the pointer state is a pulse jitter state;

[0127] If so, a signal indicating that the metering pump is operating normally is sent;

[0128] If not, a metering pump alarm signal is sent.

[0129] In a possible implementation, the memory 11 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function, etc.; the data storage area may store data created during use.

[0130] In addition, the memory 11 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device or other volatile solid-state storage device.

[0131] The communication interface 12 may be an interface of a communication module, and is used to connect to other devices or systems.

[0132] Of course, it should be noted that Figure 4 The structure shown does not constitute a limitation on the monitoring device in the embodiment of the present application. In actual applications, the monitoring device may include Figure 4 More or fewer components than shown, or combinations of certain components.

[0133] The present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the operation monitoring method of any mud-type canned motor pump as described above can be implemented.

[0134] The computer-readable storage medium may include: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

[0135] For an introduction to the computer-readable storage medium provided in this application, please refer to the above method embodiment, and this application will not go into details here.

[0136] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0137] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0138] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly using hardware, a software module executed by a processor, or a combination of the two. The software module may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0139] The above is a detailed introduction to the operation monitoring method, operation monitoring device, monitoring equipment, and computer-readable storage medium of a mud-type shielded pump provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A method for monitoring the operation of a slurry type canned motor pump, characterized in that: include: The monitoring device sets the valve to a monitoring mode; wherein the monitoring mode includes: a first valve between the auxiliary metering pump and the main shielded pump is opened, a second valve between the seismic pressure gauge and the pipeline is opened, and a third valve at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump; Starting the auxiliary metering pump and obtaining the pointer status of the seismic pressure gauge; Determining whether the pointer state is a pulse jitter state; If so, a signal indicating that the metering pump is operating normally is sent; If not, a metering pump alarm signal is sent.

2. The operation monitoring method according to claim 1, characterized in that: Also includes: When receiving the maintenance signal, the monitoring device sets the valve to a maintenance mode; wherein the maintenance mode includes: the first valve is closed, and the second valve and the third valve are opened.

3. The operation monitoring method according to claim 2, characterized in that: Also includes: When the auxiliary metering pump fails to work, the monitoring device sets the valve to a standby mode and starts the standby metering pump; wherein the standby mode includes: the first valve is closed, and the second valve and the third valve are opened; wherein the auxiliary metering pump is a metering pump arranged at the outlet of the pipeline.

4. The operation monitoring method according to claim 3, characterized in that: Get the pointer status of the seismic pressure gauge, including: The pointer state of the seismic pressure gauge is acquired through a pressure transmitter, and the pressure data as the pointer state is sent to a distributed control system; wherein the pressure transmitter is located between the seismic pressure gauge and the second valve.

5. The operation monitoring method according to claim 4, characterized in that: Determining whether the pointer state is a pulse jitter state includes: The distributed control system determines whether the pressure data is in a straight line state within a preset time; If yes, it is determined that the pointer state is not a pulse jitter state; If not, it is determined that the pointer state is a pulse jitter state.

6. The operation monitoring method according to claim 5, characterized in that: The anti-seismic pressure gauge is used to monitor the operating status of the auxiliary metering pump; the first valve is used to cut off the main pump and the metering pump; the second valve is used to cut off the anti-seismic pressure gauge; and the third valve is used to connect the standby metering pump.

7. The operation monitoring method according to claim 6, characterized in that: Also includes: When the metering pump alarm signal is received, the alarm signal is sent through a preset path.

8. An operation monitoring device for a slurry type canned motor pump, characterized in that: include: A valve operation module, used to set the valve to a monitoring mode; wherein the monitoring mode includes: a first valve located between the auxiliary metering pump and the main shielded pump is opened, a second valve located between the seismic pressure gauge and the pipeline is opened, and a third valve located at the outlet of the pipeline is closed; wherein the seismic pressure gauge is arranged in the pipeline between the auxiliary metering pump and the main shielded pump; A pressure state acquisition module, used to start the auxiliary metering pump and acquire the pointer state of the seismic pressure gauge; A pressure state judgment module, used to judge whether the pointer state is a pulse-type jitter state; A normal signal sending module, used for sending a metering pump normal operation signal when the pointer state is in a pulse jitter state; The alarm module is used to send a metering pump alarm signal when the pointer state is not in a pulse-like jitter state.

9. A monitoring device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the operation monitoring method according to any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the operation monitoring method as described in any one of claims 1 to 7 are implemented.

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