CN115388394A

CN115388394A - Steam system fault quick response method, device, equipment and storage medium

Info

Publication number: CN115388394A
Application number: CN202211023070.XA
Authority: CN
Inventors: 舒劲松
Original assignee: Nanjing Jinling Petrochemical Construction And Installation Engineering Co ltd
Current assignee: Nanjing Jinling Petrochemical Construction And Installation Engineering Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-25

Abstract

The application relates to a method, a device, equipment and a storage medium for quickly responding to steam system faults, which are applied to the field of steam heating, wherein the method comprises the following steps: acquiring a first pressure signal, wherein the first pressure signal comprises first pressure values corresponding to different positions on a main steam main pipe; acquiring a second pressure signal, wherein the second pressure signal comprises second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe; comparing the plurality of first pressure values with the first standard value, and recording the number of the first pressures of the first pressure values exceeding the first standard value; comparing the plurality of second pressure values with a second standard value, and recording the number of second pressures of the second pressure values which are not more than the second standard value; if the first pressure number is not less than the preset standard number value, and the second pressure number is not less than the preset standard number value, the receiving end of sending the valve opening instruction to the valve controls the valve to open to the preset valve opening standard value, and the technical effect that this application has is: the response speed of the steam system to the emergency is improved.

Description

Steam system fault quick response method, device, equipment and storage medium

Technical Field

The present application relates to the field of steam heating technologies, and in particular, to a method, an apparatus, a device, and a storage medium for fast responding to a steam system fault.

Background

In the industrial field, two heating modes of water circulation heating and steam heating are mainly adopted during heating, wherein the steam heating has the advantages of high conveying efficiency, silence and the like; in a steam heat supply pipe network, steam enters a main steam pipe from a boiler, part of the steam in the main steam pipe flows into a medium-pressure steam extraction main pipe through a steam turbine, and the other part of the steam flows into the medium-pressure steam extraction main pipe through a medium-pressure temperature and pressure reducing device.

In the related technology, for the control of a heat supply pipe network, the outlet pressure of a steam heat supply pipeline is selected as an adjusted parameter, the PID adjustment of a single loop is realized, and the opening of the valve is mainly adjusted according to the deviation of the outlet pressure and a set value.

In the process of implementing the present application, the inventors found that at least the following problems exist in the technology: under emergency, the PID system waits for the outlet pressure of heat supply pipeline to change and then adjusts the valve, real-time greatly reduced.

Disclosure of Invention

In order to improve the response speed of a steam system to an emergency, the application provides a method, a device, equipment and a storage medium for quickly responding to a steam system fault.

In a first aspect, the present application provides a method for quickly responding to a steam system fault, which adopts the following technical scheme: the method comprises the following steps:

acquiring a first pressure signal of a main steam main pipe, wherein the first pressure signal comprises first pressure values corresponding to different positions on the main steam main pipe;

acquiring a second pressure signal of the medium-pressure steam extraction main pipe, wherein the second pressure signal comprises second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe;

comparing the plurality of first pressure values with a preset first standard value, and recording the number of first pressures of the first pressure values exceeding the first standard value;

comparing the plurality of second pressure values with a preset second standard value, and recording the number of second pressures of the second pressure values which are not more than the second standard value;

and if the first pressure number is not less than the preset standard number value and the second pressure number is not less than the preset standard number value, sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value.

Through the technical scheme, when a steam heating system breaks down, the first pressure value in the main steam main pipe and the second pressure value in the medium-pressure steam extraction main pipe can fluctuate violently, unplanned shutdown of a downstream device of the steam heating pipeline can be caused by the violent fluctuation of the first pressure value and the second pressure value, economic loss is caused, when the first pressure value in the main steam main pipe and the second pressure value in the medium-pressure steam extraction main pipe change, the opening of the valve is directly adjusted to the preset valve opening standard value, the instantaneity of the steam heating system for response to emergency is improved, and the economic loss caused by the fact that the steam heating system and the like regulate and control the change of the outlet pressure value of the steam heating pipeline is reduced.

In a specific implementation scheme, the method comprises the steps of acquiring an operation state signal of the steam turbine unit, wherein the operation state signal comprises an operating state and a shutdown state;

and if the operating state signal is in a shutdown state, sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value.

Through above-mentioned technical scheme, when the breaking down of steam turbine, can lead to the second pressure value in the female pipe of middling pressure extraction to change, consequently through the running state signal of directly acquireing the steam turbine, judge whether the steam turbine is in normal operating condition, when the running state signal of steam turbine is the shutdown state, adjust the aperture of valve to predetermined valve aperture standard value, help just regulating and controlling the valve aperture before the second pressure value change in the female pipe of middling pressure extraction, the real-time that steam heating system responded to emergency has further been improved.

In a specific possible embodiment, when the valve is controlled to be opened according to a preset valve opening standard value, timing is started and a first timing time value is generated;

acquiring an actual opening signal of the valve, wherein the actual opening signal comprises an actual opening value of the valve;

if the actual opening value does not reach the valve opening standard value and the first timing time value reaches a preset first standard time value;

acquiring a second pressure value of the medium-pressure steam extraction main pipe;

subtracting a preset adjusting set value from the second pressure value to obtain a fine adjustment difference value;

if the fine adjustment difference value is larger than zero, controlling the valve to close according to the fine adjustment difference value;

and if the fine adjustment difference value is smaller than zero, controlling the valve to be opened according to the fine adjustment difference value.

Through the technical scheme, the valve is not adjusted to the position corresponding to the preset valve aperture standard value, and the first timing time value reaches the preset first standard time value, and the second pressure value in the medium-pressure steam extraction main pipe does not reach the preset adjusting set value, the second pressure value of the medium-pressure steam extraction main pipe is compared with the adjusting set value, according to the difference value between the second pressure value and the adjusting set value, the aperture of the valve is regulated and controlled, the second pressure value of the medium-pressure steam extraction main pipe is enabled to reach the adjusting set value, and the steam in the medium-pressure steam extraction main pipe can meet the requirement of a steam heat supply pipeline downstream device for air supply.

In a specific possible embodiment, when the valve is controlled to be opened according to a preset valve opening standard value, timing is started and a second timing time value is generated;

comparing the second timing time value with a preset second standard time value;

if the second timing time value is equal to the second standard time value, acquiring an actual opening value of the valve;

calculating an opening difference value between the actual opening value and an output value of the valve opening instruction;

and if the opening difference value exceeds a preset standard opening difference value, switching the control mode of the valve into a manual mode.

Through the technical scheme, when the second timing time value reaches the second standard time value, the difference between the actual opening value of the valve and the output value in the valve opening instruction sent to the valve by the steam heating system is still too large, the steam heating system controls the valve opening to be incapable of dealing with the emergency of the steam heating pipeline, the control mode of the valve is switched to manual operation by the steam heating system, and the subsequent valve opening adjustment is completed by workers.

In a particular possible embodiment, the value of the outlet pressure of the medium-pressure desuperheater is compared with the regulation setpoint;

if the difference value between the outlet pressure value of the medium-pressure temperature and pressure reducer and the adjusting set value is outside the preset difference value range;

a second alternative pressure value is obtained, which is the outlet pressure value of the intermediate pressure desuperheating device and is different from the outlet pressure value of the intermediate pressure desuperheating device in the second pressure signal.

Through above-mentioned technical scheme, when the difference value between the export pressure value of medium pressure temperature reduction pressure ware in the second pressure value and the regulation set value is located outside the difference value scope of predetermineeing, acquire second alternative pressure value, this second alternative pressure value is the export pressure value of medium pressure temperature reduction pressure ware equally, but this second alternative pressure value is different from the first second pressure value that acquires in the second pressure signal that obtains of steam heating system, help steam heating system when detecting the export pressure value of medium pressure temperature reduction pressure ware and appearing unusually, can pass through the change detection position, the mode of the export pressure value of obtaining new medium pressure temperature reduction pressure ware further verifies whether the export pressure value of medium pressure temperature reduction pressure ware really appears unusually.

In a specific possible embodiment, if the difference between the second candidate pressure value and the adjustment set value exceeds a preset difference range;

the control mode of the valve is modified to a manual control mode.

Through the technical scheme, when the difference value between the outlet pressure value of the medium-pressure temperature and pressure reducer in the second pressure value and the adjusting set value exceeds the preset difference value range, the control mode of the valve is modified into the manual control mode, so that the mode of manually adjusting the opening of the valve is adopted to deal with the emergency when the outlet pressure value of the medium-pressure temperature and pressure reducer is obviously abnormal, and the safety of a steam heating system is improved.

In a second aspect, the present application provides a steam system fault quick response device, which adopts the following technical scheme: the device comprises:

the first pressure signal acquisition module is used for acquiring a first pressure signal of the main steam main pipe, wherein the first pressure signal comprises first pressure values corresponding to different positions on the main steam main pipe;

the second pressure signal acquisition module is used for acquiring a second pressure signal of the medium-pressure steam extraction main pipe, wherein the second pressure signal comprises second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe;

the first pressure value comparison module is used for comparing the first pressure values with a preset first standard value and recording the number of the first pressures of the first pressure values exceeding the first standard value;

the second pressure value comparison module is used for comparing the plurality of second pressure values with a preset second standard value and recording the number of second pressures of the second pressure values which are not more than the second standard value;

and the valve opening control module is used for sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value if the first pressure number is not less than the preset standard number value and the second pressure number is not less than the preset standard number value.

According to the technical scheme, the steam heating system obtains a first pressure value in the main steam main pipe through the first pressure signal module, a second pressure value in the medium-pressure steam extraction main pipe is obtained through the second pressure signal obtaining module, the first pressure value is compared with the first standard value through the first pressure value comparison module and the second pressure value comparison module respectively, a first pressure number of the first pressure value exceeding the first standard value is recorded and recorded, the second pressure value is compared with the second standard value, a second pressure number of the second pressure value not larger than the second standard value is recorded, when the first pressure number and the second pressure number are not smaller than a preset standard number value, the valve opening control module controls the valve to be opened to a preset value according to the preset valve opening standard value, when the first pressure value of the steam heating system in the main steam main pipe and the second pressure value of the medium-pressure steam extraction main pipe are changed, the opening of the valve can be directly adjusted to the preset standard value, and the real-time performance of the steam heating system for responding to emergency is improved.

In a third aspect, the present application provides a computer device, which adopts the following technical solutions: comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and executed in accordance with any of the above-described steam system fault rapid response methods.

In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solutions: a computer program is stored which can be loaded by a processor and which implements any of the above-described steam system fault rapid response methods.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the steam heating system breaks down, a first pressure value in the main steam main pipe and a second pressure value in the medium-pressure steam extraction main pipe can fluctuate violently, the first pressure value and the second pressure value can possibly cause unplanned shutdown of a downstream device of the steam heating pipeline to cause economic loss, and when the first pressure value in the main steam main pipe and the second pressure value in the medium-pressure steam extraction main pipe change, the opening of the valve is directly adjusted to a preset valve opening standard value, so that the real-time performance of the steam heating system for responding to emergency is improved, and the economic loss caused by the steam heating system and the like by adjusting and controlling the change of the outlet pressure value of the steam heating pipeline is reduced;

2. when the steam turbine breaks down, the second pressure value in the medium-pressure steam extraction main pipe may be changed, so that whether the steam turbine is in a normal working state or not is judged by directly obtaining the running state signal of the steam turbine, and when the running state signal of the steam turbine is in a shutdown state, the opening of the valve is adjusted to a preset valve opening standard value, so that the valve opening is regulated and controlled before the second pressure value in the medium-pressure steam extraction main pipe is changed, and the real-time performance of the steam heating system for responding to the emergency is further improved.

Drawings

Fig. 1 is a flowchart of a rapid response method for steam system failure in an embodiment of the present application.

FIG. 2 is an overall schematic view of a steam heating pipeline in an embodiment of the present application.

Fig. 3 is a block diagram of a steam system fault quick response device in an embodiment of the present application.

Fig. 4 is a block diagram of a steam system failure quick response device according to another embodiment of the present application.

Reference numerals: 301. a first pressure signal acquisition module; 302. a second pressure signal acquisition module; 303. a first pressure value comparison module; 304. a second pressure value comparison module; 305. a valve opening control module; 306. and the operation state signal acquisition module.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a steam system fault quick response method, as shown in fig. 1, the method is applied to a steam heating system, a corresponding instruction of the method is stored in a control center in the steam heating system in advance, data transmission is arranged between the steam heating system and external equipment, the external equipment comprises input equipment and output equipment, the input equipment can be a keyboard and a mouse, and the output equipment can be a display screen; the steam heat supply system comprises a steam heat supply pipeline for conveying steam, the steam heat supply pipeline comprises a main steam main pipe and a medium-pressure steam extraction main pipe, the medium-pressure steam extraction main pipe comprises a first branch pipe where a steam turbine is located, a second branch pipe where a medium-pressure temperature and pressure reducing device is located and a medium-pressure gas supply main pipe for conveying steam to a downstream device of the steam heat supply pipeline, and the downstream device of the steam heat supply pipeline can be an oil refinery and a chemical fertilizer plant; be provided with the valve that is used for controlling second branch pipe steam volume between medium pressure temperature and pressure reduction ware and the female pipe of medium pressure air feed, the control mode of valve includes automatic control mode and manual control mode, and the valve is including the receiving terminal that is used for receiving valve aperture control command.

As shown in fig. 2, the method comprises the steps of:

s10, acquiring a first pressure signal of the main steam main pipe, wherein the first pressure signal comprises first pressure values corresponding to different positions on the main steam main pipe.

Specifically, acquiring a first pressure signal of the main steam main pipe, namely selecting a plurality of different positions on the main steam main pipe respectively, and acquiring pressure values corresponding to the plurality of different positions, wherein the pressure values are also first pressure values; the main steam main pipe is directly communicated with a boiler, and the boiler heats water at a certain temperature to high-temperature high-pressure steam and conveys the high-temperature high-pressure steam to the main steam main pipe; for example: five different positions are respectively selected on the main steam main pipe, pressure values corresponding to the five different positions are obtained, and the five pressure values are first pressure values.

And S20, acquiring a second pressure signal of the medium-pressure steam extraction main pipe, wherein the second pressure signal comprises second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe.

Specifically, acquiring a second pressure signal of the medium-pressure steam extraction main pipe, namely selecting a plurality of positions on the medium-pressure steam extraction main pipe respectively, and acquiring pressure values corresponding to the positions, wherein the pressure values are also second pressure values; the medium-pressure steam extraction main pipe comprises a first branch pipe where a steam turbine is located, a second branch pipe where a medium-pressure temperature and pressure reducing device is located and a medium-pressure air supply main pipe; for example: in this embodiment, one second pressure value in the second pressure signal may be a pressure value of a steam turbine extraction opening, three second pressure values in the second pressure signal may be an outlet pressure value of the medium-pressure temperature and pressure reducer, and one second pressure value in the second pressure signal may be a pressure value of the medium-pressure gas supply main pipe.

And S30, comparing the plurality of first pressure values with a preset first standard value, and recording the number of the first pressures of the first pressure values exceeding the first standard value.

Specifically, the obtained five first pressure values are respectively compared with a first standard value, and the number of the first pressure values which are not less than the first standard value is recorded, wherein the number is also the number of the first pressure; for example: the first standard value in this embodiment may be 9.6MPa.

And S40, comparing the plurality of second pressure values with a preset second standard value, and recording the number of the second pressures of the second pressure values which are not more than the second standard value.

Specifically, the obtained five second pressure values are respectively compared with a second standard value, and the number of the second pressure values which are not more than the second standard value is recorded, wherein the number is also the number of the second pressure; for example: the second pressure value in this embodiment may be 3.6MPa.

And S50, if the number of the first pressures is not less than the preset standard number value and the number of the second pressures is not less than the preset standard number value, sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value.

Specifically, when the number of the first pressure and the number of the second pressure both reach a preset standard number value, the steam heating system controls the valve at the outlet of the medium-pressure temperature and pressure reducing device to be opened to a preset position in a mode of sending a valve opening instruction to the receiving end of the valve, and sends an alarm instruction to the display when the steam heating system sends the valve opening instruction; it should be noted that the valve opening instruction is used to open the valve to a preset valve opening standard value, in this embodiment, the display displays a flow picture of the steam heating system in real time, and after receiving the alarm signal, the display sends an audible and visual alarm on the flow picture; the preset valve opening standard value is obtained by the working personnel according to the working condition and can be displayed on a flow picture of a display, but only the working personnel with the modification authority can set the valve opening standard value; it should be noted that the number of the standard values in this embodiment may be three; for example: when the number of the first pressure values not less than 9.6MPa reaches three or more and the number of the second pressure values not more than 3.6MPa also reaches three or more, the steam heating system opens the valve to the position corresponding to the valve opening standard value according to the preset valve opening standard value. Through the first pressure value on the main steam pipe of control and the second pressure value on the female pipe of middling pressure extraction, make when first pressure value and second pressure value take place violent change, steam heating system can the direct control valve aperture, open valve aperture to predetermined valve aperture standard value, help improving the promptness of steam heating system to emergency response, reduced to adjust and control again because of steam heating system waits to the change of the export pressure value of steam heating pipeline, cause steam heating pipeline low reaches device unplanned parking and bring economic loss.

In one embodiment, to further improve the timeliness of the steam heating system for responding to an emergency; the quick response method for steam system faults can further comprise the following steps:

acquiring an operation state signal of the steam turbine unit; the running state signal comprises a working state and a shutdown state; and if the operating state signal of the steam turbine unit is in a stop state, controlling the valve to be opened to a preset value according to a preset valve opening standard value. Therefore, once the steam turbine unit breaks down, the pressure value of the steam extraction opening of the steam turbine suddenly drops, and then the pressure value in the medium-pressure air supply main pipe also changes, when the steam turbine unit breaks down, the valve is directly controlled by the steam heating system, so that the opening of the valve is opened to the position corresponding to the standard value of the opening of the valve, before the second pressure value in the medium-pressure air extraction main pipe changes, the opening of the valve is adjusted, and the timeliness of the steam heating system for emergency response is improved.

In an embodiment, considering that after the valve opening is controlled according to the valve opening standard value, there is a case that the second pressure value in the medium pressure steam extraction main pipe still does not reach the preset regulation set value, it should be noted that the second pressure value of the medium pressure steam extraction main pipe is an outlet pressure value of the medium pressure temperature and pressure reduction device, after the control valve is opened to the preset valve opening standard value, the following steps may also be performed:

when the actual opening value of the valve does not reach the valve opening standard value and the first timing time value reaches the preset first standard time value, the steam heating system acquires an outlet pressure value of the medium-pressure temperature and pressure reducer, compares the acquired outlet pressure value of the medium-pressure temperature and pressure reducer with an adjusting set value, and increases load on the standard opening of the valve to increase the valve opening if the outlet pressure value of the medium-pressure temperature and pressure reducer is smaller than the adjusting set value; if the outlet pressure of the intermediate reducer is greater than the adjusting set value, reducing the load on the standard opening of the valve so as to reduce the opening of the valve; it should be noted that, in this embodiment, the first standard time value is 35 seconds at most, that is, it takes 35 seconds at most for the steam heating system to control the valve opening according to the valve opening standard value, even if the valve cannot be opened to the position corresponding to the valve opening standard value in the 35 th second, the valve is no longer controlled according to the preset valve opening standard value, the load increase or the load decrease on the valve standard opening is that the steam heating system directly modifies on the basis of the preset valve opening standard value, the modified value is used as an output value of the valve opening instruction, and the valve opening instruction is sent to the receiving end of the valve, it needs to be noted that the value of the valve opening standard value itself does not change; for example: the pressure value of the outlet of the medium-pressure temperature and pressure reducing device is 3.9MPa, the standard value of the opening of the valve is 30%, the adjusting set value is 3.8MPa, the actual opening value of the valve is 25%, the pressure value of the outlet of the medium-pressure temperature and pressure reducing device is larger than the adjusting set value, the steam heating system enables the output value of the opening instruction of the adjusting valve to be below 25%, the actual opening of the valve is adjusted according to the opening value, and the pressure value of the second branch pipe where the medium-pressure temperature and pressure reducing device is located is further reduced; through the size of subtracting ware outlet pressure and regulation setting value in the real-time contrast, finely tune the valve aperture, and then make well subtract ware outlet pressure can equal the regulation setting value, help guaranteeing that the steam pressure value in the female pipe of middling pressure air feed can satisfy the demand of steam heat supply pipeline low reaches device to air feed pressure, and then make steam heat supply pipeline low reaches device can normal operating.

In one embodiment, considering that when the steam heating system fine-adjusts the valve opening after controlling the valve to be opened to a preset valve opening standard value, the valve may have a fault at this time, so that the steam heating system cannot adjust the valve opening, after obtaining an actual opening signal of the valve, the following steps may be further performed:

it should be noted that, as mentioned above, the process of controlling the valve to be opened to the preset valve opening standard value by the steam heating system takes 35 seconds at most when the operation state signal of the steam turbine unit is the shutdown state condition, although the actual opening value of the valve does not reach the preset valve opening standard value at 35 seconds, the steam heating system also performs fine adjustment on the valve according to the difference value between the outlet pressure value of the medium pressure temperature and pressure reducer and the adjustment set value, and if the actual opening value of the valve reaches the valve opening standard value before 35 seconds, the steam heating system also performs fine adjustment on the valve according to the difference value between the outlet pressure value of the medium pressure temperature and pressure reducer and the adjustment set value.

When the second timing time value reaches a second standard time value, acquiring an actual opening value of the valve, calculating a difference value between the actual opening value of the valve and an output value of the steam heating system for controlling the opening of the valve, and if the difference value between the actual opening value of the valve and the output value of the opening of the steam heating system exceeds a preset valve opening difference value, switching the control mode of the valve to manual operation, and directly controlling the actual opening of the valve by a worker; if the difference value between the actual opening value of the valve and the output value of the opening of the valve of the steam heating system is smaller than the preset valve opening difference value, continuing to control the actual opening of the valve by the steam heating system; in this embodiment, the second time criterion value is at most 60 seconds, that is, the process of adjusting the valve opening by the steam heating system, which includes the time taken by the steam heating system to control the valve opening according to the preset valve opening criterion value, takes at most 60 seconds.

The steam heating system is through the mode that sets up the second standard time value, when the second timing time value reaches the second standard time value, but the difference between the actual opening value of valve and the output value that steam heating system sent to the valve aperture instruction of valve is still too big, the proruption of steam heating pipeline has been unable to deal with by steam heating system control valve aperture this moment, steam heating system switches the control mode of valve into manual, subsequent valve aperture is adjusted and is accomplished by the staff, help promoting steam heating system's the ability that corresponds the proruption.

In one embodiment, considering that when the steam heating system fine-tunes the valve, when the first pressure number and the second pressure number are triggered to the preset standard number value again, the steam heating system adjusts the valve opening to the valve opening standard value again, which is absolutely not allowed for safety production, so that the steam heating system may cause huge fluctuation to the external steam heating, and after the control valve is opened to the preset valve opening standard value, the following steps may be further performed:

the steam heating system does not acquire the first pressure signal and the running state signal of the steam turbine unit any more, that is, the first pressure signal and the steam turbine unit signal are locked until the opening of the valve is adjusted to a proper position by the steam heating system, so that the second pressure value returns to the adjustment set value, and the steam heating system can recover to acquire the first pressure signal and the running state signal. Therefore, when the actual opening corresponding to the valve is adjusted, the steam heating system does not receive the first pressure signal and the operation state signal any more, so that the action that the valve opening is adjusted to the preset valve opening standard value only occurs once in an emergency.

It should be mentioned that, in the present embodiment, the steam heating system realizes the above functions by setting the interlock, and only when the first pressure number and the second pressure number do not reach the standard number value or the operation state signal of the steam turbine unit is in the working state, the process picture on the display displays the interlock switching button, otherwise, the interlock switching button is hidden, thereby reducing the possibility of misoperation of the staff. Therefore, during the interlocking action, the first pressure signal of the main steam main pipe, the second pressure signal of the medium-pressure steam extraction main pipe and the operation state signal of the steam turbine unit are not acquired, so that the possibility that the opening of the valve needs to be finely adjusted again by the steam heating system due to the fact that the first pressure value and the second pressure value change respectively around the first standard value and the second standard value or the operation state signal of the steam turbine unit changes for multiple times in a short time is reduced, and the applicability of the steam heating system is improved.

In one embodiment, in order to further verify the abnormal condition of the outlet pressure value of the medium pressure temperature and pressure reducing device, after acquiring the second pressure signal of the medium pressure steam extraction main pipe, the following steps can be further executed:

comparing the outlet pressure value of the medium-pressure temperature and pressure reducer in the second pressure signal with an adjusting set value, and when the difference value between the outlet pressure value of the medium-pressure temperature and pressure reducer and the adjusting set value is out of a preset difference value range, indicating that the outlet pressure value of the medium-pressure temperature and pressure reducer is a bad value, and acquiring a second alternative pressure value by the steam heating system; the second alternative pressure value is still the outlet pressure value of the medium-pressure temperature and pressure reducer, but the outlet pressure value of the medium-pressure temperature and pressure reducer is different from the outlet pressure value of the medium-pressure temperature and pressure reducer in the second pressure signal, the outlet pressure value of the medium-pressure temperature and pressure reducer which is not detected is obtained again for the steam heating system, and the second alternative pressure value and other second pressure values form a new second pressure signal.

For example: since the outlet pressure signal of the intermediate pressure reducer is in the range of 0 to 6MPa, if the outlet pressure value of the intermediate pressure temperature-reducing pressure reducer is 1.5MPa, the outlet pressure value of the intermediate pressure temperature-reducing pressure reducer is about 3.8MPa, and therefore the outlet pressure value of the intermediate pressure temperature-reducing pressure reducer is an abnormal value, the mode of obtaining the new outlet pressure value of the intermediate pressure temperature-reducing pressure reducer is helpful for verifying whether the outlet pressure value of the intermediate pressure temperature-reducing pressure reducer is actually abnormal or not.

In one embodiment, in order to improve the safety of the steam heating system, after obtaining the second alternative pressure value, the following steps may also be performed:

if the outlet pressure values of the medium-pressure temperature and pressure reducers exceed the input range of the instrument, the outlet valve position feedback value of the medium-pressure temperature and pressure reducers exceeds the input range of the instrument, and the steam supply system modifies the control mode of the valve into a manual control mode; the manual control mode is that a worker transmits data to the steam heating system through the input equipment, so that the steam heating system controls the opening of the valve according to the data obtained from the input equipment; for example: if the outlet pressure values of the medium-pressure temperature and pressure reducing device are all bad values, the control mode of the valve is switched to the manual control mode, and the safety of the steam heating system is improved.

FIG. 2 is a flow diagram illustrating a method for fast response to a steam system fault in one embodiment. It should be understood that, although the steps in the flowchart of fig. 1 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows; the steps are not limited to be performed in the exact order disclosed, and steps may be performed in other orders, unless explicitly stated otherwise; and at least some of the steps in fig. 1 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

Based on the method, the embodiment of the application also discloses a steam system fault quick response device.

As shown in fig. 3, the device is applied to a steam heating system, the steam heating system comprises a branch pipe connected between a main steam main pipe and a medium-pressure steam extraction main pipe, a valve used for controlling the steam quantity of the branch pipe is arranged on the branch pipe, and the device comprises the following modules:

the first pressure signal acquiring module 301 is configured to acquire a first pressure signal of the main steam main pipe, where the first pressure signal includes first pressure values corresponding to different positions on the main steam main pipe;

a second pressure signal obtaining module 302, configured to obtain a second pressure signal of the medium-pressure steam extraction main pipe, where the second pressure signal includes second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe;

the first pressure value comparison module 303 is configured to compare the plurality of first pressure values with a preset first standard value, and record the number of first pressures of the first pressure values exceeding the first standard value;

the second pressure value comparison module 304 is configured to compare the plurality of second pressure values with a preset second standard value, and record a second pressure number of the second pressure values not greater than the second standard value;

the valve opening control module 305 is configured to send a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value if the first pressure number is not smaller than the preset standard number value and the second pressure number is not smaller than the preset standard number value.

In one embodiment, as shown in fig. 4, the apparatus further includes an operation status signal obtaining module 306 configured to obtain an operation status signal of the steam turbine unit, where the operation status signal includes an operating status and a shutdown status;

and if the operation state signal is in a shutdown state, sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value.

In one embodiment, the valve opening control module 305 is further configured to start timing and generate a first timing time value when the valve is controlled to be opened according to a preset valve opening standard value;

In one embodiment, the valve opening control module 305 is further configured to start timing and generate a second timing time value when the valve is controlled to be opened according to a preset valve opening standard value;

In one embodiment, the second pressure value includes an outlet pressure value of the medium pressure temperature and pressure reducer, and the second pressure signal obtaining module 302 is further configured to compare the outlet pressure value of the medium pressure temperature and pressure reducer with the regulation set value;

if the difference value between the outlet pressure value of the medium-pressure temperature and pressure reducer and the adjusting set value is out of the preset difference value range;

a second alternative pressure value is obtained, which is the outlet pressure value of the intermediate pressure desuperheater and is distinguished from the outlet pressure value of the intermediate pressure desuperheater in the second pressure signal.

In one embodiment, the control modes of the valve include an automatic control mode and a manual control mode, and the second pressure signal obtaining module 302 is further configured to, if a difference between the second candidate pressure value and the adjustment setting value exceeds a preset difference range;

the control mode of the valve is modified to the manual control mode.

The embodiment of the application also discloses computer equipment.

Specifically, the computer device comprises a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and execute the above-described steam system fault rapid response method.

The embodiment of the application also discloses a computer readable storage medium.

Specifically, the computer readable storage medium stores a computer program capable of being loaded by a processor and executing the above-mentioned steam system fault quick response method, and includes, for example: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A steam system fault quick response method is applied to a steam heating system, the steam heating system comprises a branch pipe connected between a main steam main pipe and a medium-pressure steam extraction main pipe, a valve used for controlling the steam quantity of the branch pipe is arranged on the branch pipe, the valve comprises a receiving end used for receiving a control instruction, and the method comprises the following steps:

2. The method of claim 1, further comprising:

acquiring an operation state signal of a steam turbine unit, wherein the operation state signal comprises a working state and a shutdown state;

and if the running state signal is in a shutdown state, sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value.

3. The method of claim 2, further comprising, after the control valve is opened to a preset valve opening criterion value:

when the valve is controlled to be opened according to a preset valve opening standard value, starting timing and generating a first timing time value;

4. The method of claim 1, wherein the control modes of the valve comprise an automatic control mode and a manual control mode, the valve opening command comprises an output value of a steam heating system for controlling an actual opening of the valve, and after the control valve is opened to a preset valve opening standard value, the method further comprises:

when the valve is controlled to be opened according to a preset valve opening standard value, starting timing and generating a second timing time value;

5. The method of claim 1, wherein the second pressure value comprises an outlet pressure value of an intermediate pressure attemperation reducer, and further comprising, after said obtaining a second pressure signal of an intermediate pressure steam extraction header:

comparing the outlet pressure value of the medium-pressure temperature and pressure reducer with the adjusting set value;

6. The method of claim 5, further comprising, after said obtaining a second candidate pressure value:

comparing the second alternative pressure value with the adjusting set value;

if the difference value between the second alternative pressure value and the adjusting set value exceeds a preset difference value range;

the control mode of the valve is switched to the manual control mode.

7. The utility model provides a steam system trouble quick response device, its characterized in that, the device is applied to steam heating system, steam heating system is including connecting the branch pipe between main steam female pipe and the female pipe of middling pressure extraction, be provided with the valve that is used for controlling branch pipe steam volume on the branch pipe, the device includes:

the first pressure signal acquisition module (301) is used for acquiring a first pressure signal of the main steam main pipe, wherein the first pressure signal comprises first pressure values corresponding to different positions on the main steam main pipe;

the second pressure signal acquisition module (302) is used for acquiring a second pressure signal of the medium-pressure steam extraction main pipe, wherein the second pressure signal comprises second pressure values corresponding to different positions on the medium-pressure steam extraction main pipe;

the first pressure value comparison module (303) is used for comparing the plurality of first pressure values with a preset first standard value and recording the number of first pressures of the first pressure values exceeding the first standard value;

a second pressure value comparison module (304) for comparing the second pressure values with a preset second standard value and recording the number of second pressures of the second pressure values not greater than the second standard value;

and the valve opening control module (305) is used for sending a valve opening instruction to a receiving end of the valve to control the valve to be opened to a preset valve opening standard value if the first pressure number is not less than a preset standard number value and the second pressure number is not less than a preset standard number value.

8. A computer device comprising a memory and a processor, the memory having stored thereon a computer program that can be loaded by the processor and that executes the method according to any of claims 1 to 7.

9. A computer-readable storage medium, in which a computer program is stored which can be loaded by a processor and which executes the method of any one of claims 1 to 6.