Steam pump auxiliary steam source pressure adjusting system and control method thereof

Abstract

The invention discloses a steam pump auxiliary steam source pressure adjusting system and a control method thereof. The steam pump auxiliary steam source pressure adjusting system comprises a steam source access module, a pressure obtaining module, an adjusting execution module, an adjusting coordination unit, a steam source soft switching module and a pressure stabilizing module. According to the pressure regulating system for the auxiliary steam source of the steam pump, through the synergistic effect of the steam source access module and the pre-filling unit, the output pipeline is supplemented with pressure in advance when the main steam pressure tends to drop, sudden drop of the pressure of a downstream pipeline is effectively avoided, steam supply continuity is guaranteed, and energy consumption is reduced. The pressure acquisition module forms closed-loop feedback through a near-end pressure acquisition unit and a far-end pressure correction unit, so that the adjustment execution module can quickly adjust the output pressure of main steam and standby steam according to a real-time deviation signal, and the adjustment coordination unit dynamically distributes the opening degree through a weight balance unit to form master-slave linkage control. Therefore, the overall adjustment response speed and precision are improved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary steam source regulation technology for steam pumps, and specifically to an auxiliary steam source pressure regulation system for steam pumps and its control method. Background Technology

[0002] Existing steam pump auxiliary steam source pressure regulating devices typically rely on single-path pressure control or static valve regulation methods, using simple pressure switches or mechanical valves to switch between main steam and standby steam. In industrial production processes, due to frequent changes in steam load, traditional devices are prone to transient pressure fluctuations when the main steam pressure drops or when switching to standby steam, leading to a sudden drop in downstream pipeline pressure or pulsation, which in turn affects the operational stability of steam-driven equipment.

[0003] In practice, some problems still exist:

[0004] In the traditional process of switching steam sources, the pressure difference between the old and new steam sources is large, and pressure jumps are likely to occur at the moment of switching, which will impact downstream equipment, reduce equipment life and increase maintenance costs. The existing solution lacks an effective buffer adjustment mechanism and gradual switching logic, and cannot achieve soft switching and smooth pressure output. The master-slave linkage control of the adjustment execution module is also not fully utilized, resulting in delays and instability in the pressure adjustment process.

[0005] Therefore, existing technologies still have the following problems in industrial production:

[0006] The downstream pressure is unstable and prone to sudden drops or pulsations;

[0007] The transient pressure shock during steam source switching is large, and there is a lack of gradual switching and buffer control;

[0008] The lack of effective coordination between the regulating execution module and the pressure acquisition module, regulating coordination unit, and pressure stabilization module prevents the formation of a complete closed-loop control, resulting in limited regulation accuracy and response speed. These technical defects restrict the stable operation and reliability of the steam pressure regulating device under high load and complex operating conditions. Summary of the Invention

[0009] Therefore, the present invention provides a steam pump auxiliary steam source pressure regulation system and its control method to solve the problems of steam source switching pressure jump and lack of buffering and closed-loop coordinated control in the prior art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a steam pump auxiliary steam source pressure regulation system, comprising a steam source access module, a pressure acquisition module, a regulation execution module, a regulation coordination unit, a steam source soft switching module, and a pressure stabilization module;

[0011] The steam source access module is used to access the main steam and the backup steam, and the pre-filling unit replenishes the pressure in advance when the main steam pressure shows a downward trend.

[0012] The pressure acquisition module includes a proximal pressure acquisition unit and a distal pressure correction unit, which collects the output pressure in real time and generates a deviation signal to provide to the regulation execution module, forming a closed-loop feedback control.

[0013] The regulation execution module includes a main regulation unit and a secondary regulation unit, which regulate the main steam and the standby steam respectively;

[0014] The adjustment and coordination unit receives the output pressure feedback from the adjustment execution module and dynamically allocates the opening degree of the main and auxiliary adjustment units through its internal weight balancing unit, limiting the opening degree difference between the two, thereby forming a master-slave dynamic linkage control.

[0015] The steam source soft switching module includes a pressure pre-balancing unit, a buffer adjustment unit, and a switching transition unit. When switching steam sources, it first equalizes the pressure of the old and new steam sources, buffers transient pressure fluctuations, and outputs a gradual adjustment amount.

[0016] The pressure stabilization module includes a fluctuation reduction unit, an output smoothing unit, and a flow integration unit. It performs pulsation suppression, smoothing, and flow integration on the output pressure of the regulating execution module to achieve constant downstream pressure, while forming a closed-loop control with the regulating execution module.

[0017] Furthermore: the logical relationship between the pressure acquisition module, the regulation execution module, the steam source soft switching module and the pressure stabilization module is as follows: the pressure acquisition module continuously collects pressure and triggers the action of the regulation execution module; the output pressure of the regulation execution module is fed back to the regulation coordination unit; the steam source soft switching module works in coordination with the regulation execution module during the switching process; and the pressure stabilization module performs post-processing on the output pressure.

[0018] The adjustment amount output by the adjustment execution module can be expressed by the following formula:

[0019]

[0020] in, To adjust the output pressure of the execution module, For target pressure, This is the proximal pressure measurement value. and These are the adjustment weighting coefficients, To adjust the output pressure of the execution module at time t, i.e., the system at time t The output control pressure, in middle Indicates the current time of system operation;

[0021] The gradual change in output pressure of the soft-switching module can be expressed by the following formula:

[0022]

[0023] in, Output pressure during the switching process, For the original steam source pressure, To alleviate the pressure on new gas sources, To switch the transition time, In the switching process pressure formula, the time elapsed from the start of the switching to the current moment is represented;

[0024] The gradual switching process between the pressure pre-balancing unit, buffer adjustment unit, and switching transition unit of the steam source soft switching module is as follows:

[0025] When the pressure pre-balancing unit detects the steam source switching condition, it first equalizes the pressure of the old and new steam sources. The buffer regulation unit suppresses transient fluctuations according to the pressure change. The switching transition unit generates an intermediate regulation output to the downstream pipeline.

[0026] Furthermore: the proximal pressure acquisition unit of the pressure acquisition module continuously collects the output pressure and provides the data to the regulation execution module;

[0027] The remote pressure correction unit generates a correction signal based on the upstream pressure change to correct the deviation of the regulation execution module;

[0028] The pressure acquisition unit and the remote pressure correction unit work together to form a closed-loop feedback control, so that the output pressure follows the target pressure in real time.

[0029] Furthermore: the main regulating unit and the secondary regulating unit of the regulating execution module form a master-slave linkage control through the regulating coordination unit. The main regulating unit rapidly regulates the main steam according to the near-end pressure signal, and the secondary regulating unit performs auxiliary compensation regulation according to the deviation of the main regulating unit. The regulating coordination unit monitors the opening difference between the main regulating unit and the secondary regulating unit in real time and dynamically allocates the regulation ratio through the weight balancing unit.

[0030] Furthermore: the fluctuation reduction unit suppresses output pressure pulsations, the output smoothing unit further smooths the pressure curve, and the flow integration unit integrates the flow patterns according to changes in flow velocity and pressure to achieve constant downstream pressure and buffer sudden pressure changes.

[0031] Furthermore: the steam source access module includes a main steam access unit, a backup steam access unit, and a pre-filling unit.

[0032] Furthermore: the adjustment and coordination unit includes an opening degree limiting unit and a weight balancing unit;

[0033] The opening limit unit constrains the maximum adjustment range of the main adjustment unit and the secondary adjustment unit, and the weight balancing unit adjusts the adjustment ratio according to the real-time output pressure of the two units.

[0034] Furthermore, the flow integration unit of the pressure stabilization module makes real-time fine adjustments based on changes in downstream flow rate and pressure to ensure stable steam flow and constant pressure, while also working in conjunction with the fluctuation reduction unit and the output smoothing unit for comprehensive processing.

[0035] Furthermore, the switching transition unit of the soft switching module outputs an intermediate adjustment amount during the steam source switching, which, together with the pressure pre-balancing unit and the buffer adjustment unit, makes the pressure gradually change during the switching period.

[0036] Furthermore: A method for regulating and controlling the pressure of auxiliary steam source for a steam pump, comprising the following steps:

[0037] S1: The output pressure is acquired by the proximal pressure acquisition unit and the deviation signal is provided by the distal pressure correction unit;

[0038] S2: The main control unit performs main control based on the proximal pressure, and the secondary control unit performs auxiliary control based on the main control deviation. The output pressure satisfies the output control formula of the control execution module.

[0039] S3: The adjustment and coordination unit monitors the opening difference between the main and auxiliary adjustment units in real time, and dynamically adjusts the adjustment ratio through the weight balancing unit to achieve master-slave linkage control;

[0040] S4: When a steam source switching condition is detected, the pressure pre-balancing unit first equalizes the pressure of the old and new steam sources;

[0041] S5: The buffer adjustment unit and the switching transition unit buffer the pressure changes during the switching period, and the output pressure changes gradually, satisfying the output pressure gradual change formula of the soft switching module.

[0042] S6: The pressure stabilization module's fluctuation reduction unit, output smoothing unit, and flow integration unit perform final stabilization processing on the regulated output to keep the downstream pressure constant.

[0043] The present invention has the following advantages:

[0044] 1. This steam pump auxiliary steam source pressure regulation system, through the synergistic action of the steam source access module and the pre-filling unit, enables the output pipeline to be pressurized in advance when the main steam pressure tends to drop, effectively avoiding sudden pressure drops in the downstream pipeline and ensuring the continuity of steam supply. The pressure acquisition module forms a closed-loop feedback through the near-end pressure acquisition unit and the far-end pressure correction unit, enabling the regulation execution module to quickly adjust the output pressure of the main steam and standby steam according to the real-time deviation signal. The regulation coordination unit dynamically allocates the opening degree through the weight balancing unit, forming a master-slave linkage control, thereby improving the overall regulation response speed and accuracy, ensuring the safe and stable operation of downstream equipment, which is significantly better than traditional static pressure regulation devices.

[0045] 2. The steam source soft switching module achieves gradual steam source switching through a pressure pre-balancing unit, a buffer adjustment unit, and a switching transition unit. During the switching process, it smoothly levels the pressure of the old and new steam sources, buffers transient pressure fluctuations, and outputs intermediate adjustment values ​​to ensure continuous and stable output pressure. The adjustment execution module works in conjunction with the steam source soft switching module during the soft switching process, and achieves closed-loop pressure regulation through the output adjustment formula. This ensures that the downstream pressure will not jump or pulsate during the switching period, guaranteeing the safe operation of the equipment. This design effectively solves the problem of transient impact generated by traditional pressure regulation devices during steam source switching, achieves high reliability and smoothness in the switching process, and improves the system's ability to adapt to complex working conditions.

[0046] 3. The pressure stabilization module includes a fluctuation reduction unit, an output smoothing unit, and a flow integration unit. By suppressing pulsations, smoothing curves, and fine-tuning the flow pattern of the output pressure from the regulating execution module, it achieves constant downstream pressure. A closed-loop control logic is formed among the modules. The pressure acquisition module continuously collects pressure data to trigger the action of the regulating execution module. The regulation coordination unit ensures that the main and auxiliary regulating units work together. The steam source soft switching module provides a gradual output during switching. The pressure stabilization module performs comprehensive processing on the final pressure. This technical solution not only improves the pressure regulation accuracy but also enhances the stability of the steam flow pattern, increases system reliability and equipment lifespan, and meets the high-stability pressure control requirements of industrial production.

[0047] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0048] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0049] Figure 1 This is a schematic diagram of the working process of the steam pump auxiliary steam source pressure regulation system and its control method according to the present invention.

[0050] Figure 2 This is a schematic diagram of the process flow of a steam pump auxiliary steam source pressure regulation system and its control method according to the present invention. Detailed Implementation

[0051] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. It should be understood that these embodiments are merely for further explanation of the present invention and should not be construed as limiting the scope of protection of the present invention. Technical engineers in the field can make some non-essential improvements and adjustments to the present invention based on the above-described content. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] Please see Figures 1-2 A steam pump auxiliary steam source pressure regulation system and its control method include a steam source access module, a pressure acquisition module, a regulation execution module, a regulation coordination unit, a steam source soft switching module, and a pressure stabilization module.

[0053] The steam source access module is used to access the main steam and standby steam, and the pre-filling unit replenishes the pressure in advance when the main steam pressure shows a downward trend.

[0054] The pressure acquisition module includes a proximal pressure acquisition unit and a distal pressure correction unit. It collects the output pressure in real time and generates a deviation signal to provide to the regulation and execution module, forming a closed-loop feedback control.

[0055] The regulation execution module includes a main regulation unit and a secondary regulation unit, which regulate the main steam and the standby steam respectively;

[0056] The adjustment and coordination unit receives the output pressure feedback from the adjustment execution module and dynamically allocates the opening degree of the main and auxiliary adjustment units through its internal weight balancing unit, limiting the opening degree difference between the two, thereby forming a master-slave dynamic linkage control.

[0057] The steam source soft switching module includes a pressure pre-balancing unit, a buffer adjustment unit, and a switching transition unit. When switching steam sources, it first equalizes the pressure of the old and new steam sources, buffers transient pressure fluctuations, and outputs a gradual adjustment amount.

[0058] The pressure stabilization module includes a fluctuation reduction unit, an output smoothing unit, and a flow integration unit. It suppresses pulsations, smooths the output pressure of the regulating execution module, and integrates the flow to achieve constant downstream pressure. At the same time, it forms a closed-loop control with the regulating execution module.

[0059] In the aforementioned components, the steam source access module introduces conventional working fluid through the main steam access unit, while the backup steam access unit serves as a redundancy guarantee. The pre-filling unit initiates minor flow compensation based on a trend prediction algorithm before the main steam pressure drops significantly. The pressure acquisition module uses the near-end pressure acquisition unit for high-frequency sampling to capture instantaneous fluctuations. The far-end pressure correction unit generates feedforward compensation through analysis of the hysteresis characteristics of long-distance pipelines. In the regulation execution module, the main regulation unit handles major load changes, the secondary regulation unit processes minor deviations, and the regulation coordination unit calculates the difference in opening between the two units in real time and uses the weight balancing unit for nonlinear allocation. When the steam source soft switching module detects a source switching command, the pressure pre-balancing unit adjusts the pressure difference between the old and new sources within a set threshold. The buffer regulation unit absorbs the impact energy at the moment of switching, and the switching transition unit generates smooth intermediate parameters. The fluctuation reduction unit of the pressure stabilization module filters out high-frequency noise, the output smoothing unit smooths out step changes, and the flow integration unit performs final adaptation based on the dynamic needs of downstream steam-using equipment.

[0060] The logical relationship between the pressure acquisition module, the regulation execution module, the steam source soft switching module, and the pressure stabilization module is as follows: The pressure acquisition module continuously collects pressure and triggers the action of the regulation execution module. The output pressure of the regulation execution module is fed back to the regulation coordination unit. The steam source soft switching module works in coordination with the regulation execution module during the switching process. The pressure stabilization module performs post-processing on the output pressure.

[0061] The adjustment amount output by the adjustment execution module can be expressed by the following formula:

[0062]

[0063] in, To adjust the output pressure of the execution module, For target pressure, This is the proximal pressure measurement value. and These are the adjustment weighting coefficients, Adjusting the output pressure of the execution module, i.e., the system's time... The output control pressure, in middle Indicates the current time of system operation;

[0064] The gradual change in output pressure of the soft-switching module can be expressed by the following formula:

[0065]

[0066] in, Output pressure during the switching process, For the original steam source pressure, To alleviate the pressure on new gas sources, To switch the transition time, In the switching process pressure formula, the time elapsed from the start of the switching to the current moment is represented;

[0067] The gradual switching process between the pressure pre-balancing unit, buffer adjustment unit, and switching transition unit of the steam source soft switching module is as follows:

[0068] When the pressure pre-balancing unit detects the steam source switching condition, it first equalizes the pressure of the old and new steam sources. The buffer regulation unit suppresses transient fluctuations according to the pressure change. The switching transition unit generates an intermediate regulation output to the downstream pipeline.

[0069] Among the aforementioned components, the pressure pre-balancing unit of the steam source soft switching module first detects the pressure difference between the old and new steam sources and starts the pre-pressurization program within the allowable range. The buffer adjustment unit monitors the pressure fluctuation amplitude in the pipeline in real time and intervenes to adjust when the fluctuation exceeds the set limit. The switching transition unit generates an intermediate pressure set value according to a preset time function. This set value serves as the input command for the adjustment execution module. The three units advance sequentially to form a gradual switching process, ensuring that the downstream pressure remains stable during the steam source switching process.

[0070] The proximal pressure acquisition unit of the pressure acquisition module continuously collects the output pressure and provides the data to the regulation execution module;

[0071] The remote pressure correction unit generates a correction signal based on the upstream pressure change to correct the deviation of the regulation execution module;

[0072] The pressure acquisition unit and the remote pressure correction unit work together to form a closed-loop feedback control, so that the output pressure follows the target pressure in real time.

[0073] In the aforementioned components, the near-end pressure acquisition unit of the pressure acquisition module continuously monitors the pressure changes at the output end at a high sampling frequency. The collected data is directly transmitted to the regulation and execution module as the basic feedback quantity for closed-loop control. The far-end pressure correction unit analyzes the pressure change trend of the upstream steam source and generates a deviation correction signal to compensate for the hysteresis effect of pipeline transmission. The two units fuse the data through a weighted algorithm to form a high-precision closed-loop feedback control loop, enabling the output pressure to accurately follow the target pressure setpoint in real time.

[0074] The main regulating unit and the secondary regulating unit of the regulating execution module form a master-slave linkage control through the regulating coordination unit. The main regulating unit rapidly regulates the main steam based on the near-end pressure signal, and the secondary regulating unit performs auxiliary compensation regulation based on the deviation of the main regulating unit. The regulating coordination unit monitors the opening difference between the main regulating unit and the secondary regulating unit in real time and dynamically allocates the regulation ratio through the weight balancing unit.

[0075] In the aforementioned components, the main regulating unit of the regulating execution module makes large-scale adjustments based on the rapid changes in the proximal pressure signal, while the secondary regulating unit makes fine compensation for the remaining minor deviations of the main regulating unit. The regulating coordination unit compares the opening status of the main and secondary regulating units in real time. When the opening difference exceeds the preset range, the weight balancing unit adjusts the regulation ratio of the two units. By dynamically allocating the load, master-slave linkage control is achieved, avoiding overload or frequent operation of a single unit.

[0076] The fluctuation reduction unit suppresses output pressure pulsations, the output smoothing unit further smooths the pressure curve, and the flow integration unit integrates the flow patterns according to changes in flow velocity and pressure to achieve constant downstream pressure and buffer sudden pressure changes.

[0077] Among the aforementioned components, the fluctuation reduction unit of the pressure stabilization module identifies and suppresses high-frequency pulsating components in the output pressure, the output smoothing unit smooths the abrupt changes in the pressure curve, and the flow integration unit makes fine adjustments based on real-time changes in downstream flow rate and pressure. The three units work together to eliminate the impact caused by pressure abrupt changes and ensure that the downstream pressure is maintained within a constant range.

[0078] The steam source access module includes a main steam access unit, a backup steam access unit, and a pre-filling unit.

[0079] In the above components, the main steam access unit of the steam source access module is connected to the main steam source pipeline, the backup steam access unit is connected to the backup steam source pipeline, and the pre-filling unit is connected in parallel to the main steam access unit pipeline. According to the pressure trend prediction signal, a small amount of backup working fluid is introduced in advance to supplement the pressure drop trend of the main steam source.

[0080] The adjustment and coordination unit includes an opening limit unit and a weight balancing unit;

[0081] The opening limit unit constrains the maximum adjustment range of the main adjustment unit and the secondary adjustment unit, and the weight balancing unit adjusts the adjustment ratio according to the real-time output pressure of the two units.

[0082] In the aforementioned components, the opening limit unit of the regulating and coordinating unit sets the maximum and minimum opening boundaries of the main regulating unit and the auxiliary regulating unit to prevent the actuator from exceeding the safe operating range. The weight balancing unit calculates the load distribution ratio based on the real-time output pressure data of the two regulating units and dynamically adjusts the weight coefficient of the master-slave relationship.

[0083] The flow integration unit of the pressure stabilization module makes real-time fine adjustments based on changes in downstream flow rate and pressure to ensure stable steam flow and constant pressure. At the same time, it works in conjunction with the fluctuation reduction unit and the output smoothing unit for comprehensive processing.

[0084] Among the aforementioned components, the flow integration unit of the pressure stabilization module monitors the relationship between downstream flow velocity and pressure changes in real time, makes minor corrections through feedback signals, and works in conjunction with the fluctuation reduction unit and the output smoothing unit to comprehensively optimize the steam flow state, ensuring constant pressure and stable flow.

[0085] The soft switching module's switching transition unit outputs an intermediate adjustment amount during steam source switching, which, together with the pressure pre-balancing unit and the buffer adjustment unit, enables the pressure to gradually change during the switching period.

[0086] In the aforementioned components, the switching transition unit of the steam source soft switching module calculates an intermediate adjustment amount during the steam source switching. This adjustment amount, combined with the differential pressure balance result of the pressure pre-balancing unit and the fluctuation suppression state of the buffer adjustment unit, generates a gradual pressure output curve to ensure a smooth pressure transition during the switching period.

[0087] A method for regulating and controlling the pressure of auxiliary steam source for a steam pump includes the following steps:

[0088] S1: The output pressure is acquired by the proximal pressure acquisition unit and the deviation signal is provided by the distal pressure correction unit;

[0089] S2: The main control unit performs main control based on the proximal pressure, and the secondary control unit performs auxiliary control based on the main control deviation. The output pressure satisfies the output control formula of the control execution module.

[0090] S3: The adjustment and coordination unit monitors the opening difference between the main and auxiliary adjustment units in real time, and dynamically adjusts the adjustment ratio through the weight balancing unit to achieve master-slave linkage control;

[0091] S4: When a steam source switching condition is detected, the pressure pre-balancing unit first equalizes the pressure of the old and new steam sources;

[0092] S5: The buffer adjustment unit and the switching transition unit buffer the pressure changes during the switching period, and the output pressure changes gradually, satisfying the output pressure gradual change formula of the soft switching module.

[0093] S6: The pressure stabilization module's fluctuation reduction unit, output smoothing unit, and flow integration unit perform final stabilization processing on the regulated output to keep the downstream pressure constant.

[0094] Working Principle: The working principle of this auxiliary steam source pressure regulation system is based on the synergistic effect of various modules and functional units. High-precision control of output pressure is achieved through closed-loop feedback and gradual soft switching. The steam source access module is used to access main steam and standby steam. The pre-filling unit replenishes pressure in advance when a downward trend in main steam pressure is detected, thus preventing pressure drop in downstream pipelines. The pressure acquisition module collects output pressure in real time through the near-end pressure acquisition unit, and the far-end pressure correction unit generates a correction signal based on upstream pressure changes, providing the deviation signal to the regulation execution module to form a closed-loop feedback, enabling the output pressure to follow the target pressure in real time. The regulation execution module consists of a main regulation unit and a secondary regulation unit. The main regulation unit rapidly regulates the main steam based on the near-end pressure signal, while the secondary regulation unit performs auxiliary compensation regulation based on the main regulation deviation. Output pressure is fed back through the regulation coordination unit. The regulation coordination unit dynamically allocates the regulation ratios of the two units using a weight balancing unit and an opening limit unit, and limits the opening difference to ensure master-slave dynamic linkage control, thereby forming a smooth and coordinated pressure regulation process among the regulation units.

[0095] The soft-switching module plays a crucial role in the steam source switching process. Its pressure pre-balancing unit equalizes the pressures of the old and new steam sources upon detecting switching conditions. The buffer regulation unit suppresses transient fluctuations based on pressure changes, and the switching transition unit generates an intermediate regulation output to the downstream pipeline to avoid sudden pressure jumps. The gradual pressure change output of the soft-switching module can be expressed by the formula... ,in, For source air pressure, To alleviate the pressure on new gas sources, To switch the transition time, This is the current switching time. ,in Output pressure to the module. For target pressure, This is the proximal pressure measurement value. and The system comprises three modules: a pressure acquisition module, a pressure acquisition module, and a pressure control execution module. The pressure acquisition module continuously collects pressure data and triggers the action of the control execution module. The output pressure of the control execution module is fed back to the control coordination unit. The soft switching module works in conjunction with the control execution module during steam source switching. The pressure stabilization module performs post-processing on the final output. The pressure stabilization module includes a fluctuation reduction unit, an output smoothing unit, and a flow integration unit. The fluctuation reduction unit suppresses pressure pulsations during the control process, the output smoothing unit further smooths the pressure curve, and the flow integration unit makes real-time fine adjustments based on downstream flow velocity and pressure changes to achieve stable steam flow and constant pressure, while buffering pressure sudden changes.

[0096] Overall, the modules form a closed-loop control and gradual adjustment logic: the pressure acquisition module provides real-time pressure information, the adjustment execution module generates adjustment amount based on deviation signal, the adjustment coordination unit dynamically allocates the output weights of the main and auxiliary adjustment units, the steam source soft switching module outputs smooth and gradual pressure during switching, and the pressure stabilization module performs comprehensive stabilization processing on the final output, thereby achieving high-precision and high-reliability steam source pressure regulation. Through modular design and functional unit collaboration, this structure can not only achieve smooth switching and closed-loop regulation between main steam and standby steam, but also effectively suppress transient pressure fluctuations, ensuring the safe operation of downstream equipment. It achieves stability, responsiveness, and safety that traditional pressure regulation devices cannot simultaneously achieve.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A steam pump auxiliary steam source pressure regulating system, characterized in that, It includes a steam source access module, a pressure acquisition module, a regulation execution module, a regulation coordination unit, a steam source soft switching module, and a pressure stabilization module; The steam source access module is used to access the main steam and the backup steam, and the pre-filling unit replenishes the pressure in advance when the main steam pressure shows a downward trend. The pressure acquisition module includes a proximal pressure acquisition unit and a distal pressure correction unit, which collects the output pressure in real time and generates a deviation signal to provide to the regulation execution module, forming a closed-loop feedback control. The regulation execution module includes a main regulation unit and a secondary regulation unit, which regulate the main steam and the standby steam respectively; The adjustment and coordination unit receives the output pressure feedback from the adjustment execution module and dynamically allocates the opening degree of the main and auxiliary adjustment units through its internal weight balancing unit, limiting the opening degree difference between the two, thereby forming a master-slave dynamic linkage control. The steam source soft switching module includes a pressure pre-balancing unit, a buffer adjustment unit, and a switching transition unit. When switching steam sources, it first equalizes the pressure of the old and new steam sources, buffers transient pressure fluctuations, and outputs a gradual adjustment amount. The pressure stabilization module includes a fluctuation reduction unit, an output smoothing unit, and a flow integration unit. It performs pulsation suppression, smoothing, and flow integration on the output pressure of the regulating execution module to achieve constant downstream pressure, while forming a closed-loop control with the regulating execution module.

2. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The logical relationship between the pressure acquisition module, the regulation execution module, the steam source soft switching module, and the pressure stabilization module is as follows: the pressure acquisition module continuously collects pressure and triggers the action of the regulation execution module; the output pressure of the regulation execution module is fed back to the regulation coordination unit; the steam source soft switching module works in coordination with the regulation execution module during the switching process; and the pressure stabilization module performs post-processing on the output pressure. The adjustment amount output by the adjustment execution module can be expressed by the following formula: in, To adjust the output pressure of the execution module, For target pressure, This is the proximal pressure measurement value. and These are the adjustment weight coefficients, To adjust the output pressure of the execution module at time t; The gradual change in output pressure of the soft-switching module can be expressed by the following formula: in, Output pressure during the switching process, For the original steam source pressure, To alleviate the pressure on new gas sources, To switch the transition time, In the switching process pressure formula, the time elapsed from the start of the switching to the current moment is represented; The gradual switching process between the pressure pre-balancing unit, buffer adjustment unit, and switching transition unit of the steam source soft switching module is as follows: When the pressure pre-balancing unit detects the steam source switching condition, it first equalizes the pressure of the old and new steam sources. The buffer regulation unit suppresses transient fluctuations according to the pressure change. The switching transition unit generates an intermediate regulation output to the downstream pipeline.

3. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The proximal pressure acquisition unit of the pressure acquisition module continuously collects the output pressure and provides the data to the regulation execution module; The remote pressure correction unit generates a correction signal based on the upstream pressure change to correct the deviation of the regulation execution module; The pressure acquisition unit and the remote pressure correction unit work together to form a closed-loop feedback control, so that the output pressure follows the target pressure in real time.

4. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The main regulating unit and the secondary regulating unit of the regulating execution module form a master-slave linkage control through the regulating coordination unit. The main regulating unit rapidly regulates the main steam according to the near-end pressure signal, and the secondary regulating unit performs auxiliary compensation regulation according to the deviation of the main regulating unit. The regulating coordination unit monitors the opening difference between the main regulating unit and the secondary regulating unit in real time and dynamically allocates the regulation ratio through the weight balancing unit.

5. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The fluctuation reduction unit suppresses output pressure pulsations, the output smoothing unit further smooths the pressure curve, and the flow integration unit integrates the flow patterns according to changes in flow velocity and pressure to achieve constant downstream pressure and buffer sudden pressure changes.

6. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The steam source access module includes a main steam access unit, a backup steam access unit, and a pre-filling unit.

7. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The adjustment and coordination unit includes an opening degree limiting unit and a weight balancing unit; The opening limit unit constrains the maximum adjustment range of the main adjustment unit and the secondary adjustment unit, and the weight balancing unit adjusts the adjustment ratio according to the real-time output pressure of the two units.

8. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The flow integration unit of the pressure stabilization module makes real-time fine adjustments based on changes in downstream flow velocity and pressure to ensure stable steam flow and constant pressure. At the same time, it works in conjunction with the fluctuation reduction unit and the output smoothing unit for comprehensive processing.

9. The auxiliary steam source pressure regulating system for a steam pump according to claim 1, characterized in that, The soft switching module's switching transition unit outputs an intermediate adjustment amount during the steam source switching period, which, together with the pressure pre-balancing unit and the buffer adjustment unit, enables the pressure to gradually change during the switching period.

10. A method for regulating and controlling the pressure of auxiliary steam source for a steam pump, characterized in that, The system applied to the regulating system according to any one of claims 1-9 includes the following steps: S1: The output pressure is acquired by the proximal pressure acquisition unit and the deviation signal is provided by the distal pressure correction unit; S2: The main control unit performs main control based on the proximal pressure, and the secondary control unit performs auxiliary control based on the main control deviation. The output pressure satisfies the output control formula of the control execution module. S3: The adjustment and coordination unit monitors the opening difference between the main and auxiliary adjustment units in real time, and dynamically adjusts the adjustment ratio through the weight balancing unit to achieve master-slave linkage control; S4: When a steam source switching condition is detected, the pressure pre-balancing unit first equalizes the pressure of the old and new steam sources; S5: The buffer adjustment unit and the switching transition unit buffer the pressure changes during the switching period, and the output pressure changes gradually, satisfying the output pressure gradual change formula of the soft switching module. S6: The pressure stabilization module's fluctuation reduction unit, output smoothing unit, and flow integration unit perform final stabilization processing on the regulated output to keep the downstream pressure constant.

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