Efficient energy-saving gas compressor

Abstract

The invention relates to the technical field of gas compression equipment, in particular to an efficient energy-saving gas compressor. According to the method, the inlet gas entering the gas compressor is filtered, after the filtered inlet gas meets the inlet gas cleanliness standard, the target exhaust pressure is determined based on the lowest required pressure required by normal work of gas equipment and the pipeline loss pressure, and the control parameters required by operation of the gas compressor are analyzed according to the target exhaust pressure; the actual exhaust pressure is collected after regulation and control, whether the actual exhaust pressure meets the exhaust requirement or not is judged in combination with the target exhaust pressure, and when the actual exhaust pressure does not meet the exhaust requirement, control parameters of the gas compressor are adjusted, so that the problem of invalid acting or insufficient gas supply is avoided, the compression efficiency is improved, and energy-saving operation of the compressor is achieved; meanwhile, the response timeliness rate is analyzed according to the control time interval in the adjusting process, the defects of a control mechanism can be found and optimized in time, and the stability and reliability of compressor operation are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas compression equipment, and relates to a high-efficiency and energy-saving gas compressor. BACKGROUND

[0002] As the core power equipment in industrial systems, the main function of the gas compressor is to compress low-pressure gas into high-pressure gas to provide a gas source meeting the pressure and flow requirements for subsequent gas-using equipment. With the increasing requirements of industrial production for energy consumption control and operation stability, the existing gas compressor is difficult to balance the dual demands of efficient gas supply and energy-saving operation.

[0003] However, the prior art has the following problems: 1. The existing technology usually sets the compressor discharge pressure based on the rated pressure of the gas-using equipment or artificial experience, and does not adjust the operation strategy according to the dynamic demand and working condition change of the gas-using equipment. If the discharge pressure is set too high, the compressor will do extra work, causing energy waste. If it is set too low, it cannot meet the normal working requirements of some gas-using equipment, affecting the production continuity.

[0004] 2. The control parameters of the compressor directly determine the compression efficiency and energy consumption, but the existing technology relies on fixed parameter operation adjustment, and does not accurately calculate the control parameters combined with the characteristic curve of the compressor and the actual flow demand of the gas-using equipment, which easily leads to the mismatch between the control parameters and the target discharge pressure, resulting in the problems of overloading or insufficient gas supply, and reducing the operation efficiency. SUMMARY

[0005] In view of the problems existing in the prior art, the present application provides a high-efficiency and energy-saving gas compressor, which realizes precise control of the whole process of air intake filtration, pressure determination, parameter regulation and response evaluation through modular design, and finally achieves the goal of reducing energy consumption, improving operation stability and prolonging equipment life.

[0006] The technical solution adopted by the present application to solve its technical problems is: a high-efficiency and energy-saving gas compressor, comprising an air intake filtration analysis module, a discharge pressure determination module, a control parameter analysis module, a discharge pressure compliance analysis module and a control response evaluation module.

[0007] The connection relationship between the modules is: the air intake filtration analysis module is in communication connection with the discharge pressure determination module, the control parameter analysis module is in communication connection with the discharge pressure determination module and the discharge pressure compliance analysis module, and the control response evaluation module is in communication connection with the discharge pressure compliance analysis module.

[0008] The air intake filtration analysis module filters the air intake into the gas compressor, detects the cleanliness characteristic parameters of the filtered air intake, and judges whether the air intake meets the air intake cleanliness standard.

[0009] An exhaust pressure determination module determines a minimum required pressure for normal operation of each gas-consuming device based on operating parameters of the gas-consuming device, and obtains a target exhaust pressure by combining a pipeline loss pressure from an exhaust port of the gas compressor to each gas-consuming device.

[0010] A control parameter analysis module analyzes control parameters required for operation of the gas compressor based on the target exhaust pressure, the control parameters including a regulated rotating speed and an intake valve opening degree, and transmits the control parameters to a control hub.

[0011] An exhaust pressure compliance analysis module collects an actual exhaust pressure of the gas compressor, and judges whether the actual exhaust pressure meets exhaust requirements by comparing the actual exhaust pressure with the target exhaust pressure.

[0012] A control response evaluation module adjusts the control parameters of the gas compressor when the exhaust requirements are not met, analyzes a control response and timeliness of the exhaust pressure according to a control time interval of the adjustment process, and feeds back a response and timeliness rate of the gas compressor in the operation process.

[0013] Compared with the prior art, the present application has the following beneficial effects: (1) The present application filters the intake air of the gas compressor, detects a cleanliness characteristic parameter of the filtered intake air, and judges whether the intake air meets an intake air cleanliness standard, thereby effectively avoiding wear of internal components of the compressor by impurities, prolonging the service life of the compressor, and avoiding the influence of impurities on compression efficiency, so that the compressor can be maintained in a high-efficiency compression state for a long time.

[0014] (2) The present application determines a minimum required pressure for normal operation of each gas-consuming device based on operating parameters of the gas-consuming device, and obtains a target exhaust pressure by combining a pipeline loss pressure from an exhaust port of the gas compressor to each gas-consuming device, so that the target exhaust pressure accurately matches dynamic requirements of the gas-consuming device, avoids energy waste caused by excessively high pressure, prevents shutdown of the gas-consuming device caused by excessively low pressure, and ensures production continuity.

[0015] (3) The present application analyzes control parameters required for operation of the gas compressor based on the target exhaust pressure and a corresponding standard characteristic curve of the gas compressor, transmits the control parameters to a control hub, so that the regulated rotating speed and the intake valve opening degree accurately adapt to the target exhaust pressure and flow requirements, avoid invalid work or insufficient gas supply, improve compression efficiency and reduce energy loss, and realize energy-saving operation of the compressor.

[0016] (4) The present application adjusts the control parameters of the gas compressor, analyzes a control response and timeliness of the exhaust pressure according to a control time interval of the adjustment process, and feeds back a response and timeliness rate of the gas compressor in the operation process, thereby ensuring the control response and timeliness of the exhaust pressure, discovering deficiencies of the control mechanism in time and optimizing the control mechanism, improving stability and reliability of the compressor operation, and ensuring that the compressor provides a required gas source for the gas-consuming device for a long time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the system module connections of the present invention.

[0019] Figure 2 This is a schematic diagram of the unit frame connection in the air intake filtration analysis module of the present invention.

[0020] Figure 3 This is a schematic diagram of the steps for obtaining the target exhaust pressure in this invention.

[0021] Figure 4 This is a schematic diagram illustrating the specific steps of the exhaust pressure compliance analysis module in this invention. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. Furthermore, it should be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale.

[0023] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use. Techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0024] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0025] Please see Figure 1 As shown, the present invention provides a high-efficiency and energy-saving gas compressor, including an intake air filtration analysis module, an exhaust pressure determination module, a control parameter analysis module, an exhaust pressure compliance analysis module, and a control response evaluation module.

[0026] The connection relationship between the modules is that the intake filtering analysis module is in communication connection with the exhaust pressure determination module, the control parameter analysis module is in communication connection with the exhaust pressure determination module and the exhaust pressure compliance analysis module respectively, and the control response evaluation module is in communication connection with the exhaust pressure compliance analysis module.

[0027] The intake filtering analysis module filters the intake of the gas compressor, detects the cleanliness characteristic parameters of the filtered intake, and judges whether the intake meets the intake cleanliness standard.

[0028] As shown in Figure 2 The intake filtering analysis module includes a primary filtering unit, a secondary filtering unit and an intake detection unit.

[0029] The primary filtering unit is used for intercepting and filtering solid impurities in the intake. By using a metal filter screen to physically intercept solid impurities in the intake, including dust, pipeline rust debris and external suction particles, etc., large solid impurities are preferentially blocked by rough filtering to avoid direct wear of the compressor cylinder or piston parts.

[0030] The secondary filtering unit is used for adsorbing and filtering gaseous impurities in the intake after filtering of solid impurities. By using an activated carbon adsorption layer to adsorb residual gaseous impurities after rough filtering, mainly adsorbing hydrogen sulfide, carbon dioxide and other acidic or harmful gases, the problem of corrosion of gaseous impurities to the internal metal parts of the compressor is solved by fine filtering.

[0031] The intake detection unit is used for detecting the cleanliness characteristic parameters of the filtered intake, wherein the cleanliness characteristic parameters include solid impurity content and gaseous impurity concentration, which are compared with the preset intake cleanliness standard of the gas compressor.

[0032] When the solid impurity content or the gaseous impurity concentration is greater than the corresponding standard threshold in the intake cleanliness standard, the intake does not meet the intake cleanliness standard, and the filtered intake is prohibited from entering the compressor, and a filter component maintenance reminder signal is sent to prompt cleaning or replacement of the filter component, otherwise the intake meets the intake cleanliness standard.

[0033] In a specific embodiment, a laser particle counter and a special gas sensor are used to detect the solid impurity content and the gaseous impurity concentration of the filtered intake respectively.

[0034] The present application filters the intake of the gas compressor, detects the cleanliness characteristic parameters of the filtered intake, judges whether the intake meets the intake cleanliness standard, effectively avoids the wear of impurities to the internal parts of the compressor, prolongs the service life of the compressor, and avoids the influence of impurities on the compression efficiency, so that the compressor can maintain in a high-efficiency compression state for a long time.

[0035] An exhaust pressure determination module determines a minimum required pressure for normal operation of each gas-consuming device based on operating parameters of the gas-consuming devices, and obtains a target exhaust pressure by combining the minimum required pressure and a pipeline loss pressure from an exhaust outlet of the gas compressor to each gas-consuming device.

[0036] The operating parameters of each gas-consuming device can be obtained from a technical manual of the device, and a safety threshold value is marked by a device manufacturer.

[0037] It should be noted that the minimum required pressure for normal operation of each gas-consuming device is determined as follows: first, the start and stop time points of all gas-consuming devices connected to the gas compressor in each production cycle are extracted from the compressor operation history record, and the combination of the most devices running simultaneously is screened. The pressure setting can cope with the most demanding scenarios of gas consumption, and avoid the risk of partial device failure due to insufficient pressure, thereby avoiding the risk of extreme working condition omission from the source.

[0038] Second, the minimum allowable required pressure of each gas-consuming device in the most device combination is extracted, and the maximum value of the minimum allowable required pressure is taken as the peak value of the required pressure for simultaneous operation in descending order. The peak value can ensure that the minimum pressure requirement of all devices in the most device combination is covered.

[0039] Third, the minimum required pressure for normal operation of each gas-consuming device is obtained by correcting the peak value of the required pressure for simultaneous operation based on the maximum pressure fluctuation value of each gas-consuming device in each production cycle.

[0040] Among them, for each gas-consuming device in the most device combination, the highest pressure value and the lowest pressure value in each production cycle are extracted, and the difference between them is taken as the maximum pressure fluctuation value. The maximum pressure fluctuation value of each gas-consuming device in each production cycle is taken as the overall maximum pressure fluctuation value, and the sum of the overall maximum pressure fluctuation value and the peak value of the required pressure for simultaneous operation is taken as the minimum required pressure for normal operation of each gas-consuming device. Thus, all gas-consuming devices can obtain a pressure not lower than their minimum requirement in any normal production scenario, avoiding device shutdown due to insufficient pressure, ensuring the continuity of the production process, and reducing downtime losses.

[0041] In a specific embodiment, the most device combination with the largest number of simultaneously running devices is screened as follows: the start and stop time points of all gas-consuming devices connected to the gas compressor in each production cycle are extracted, and the most device combination with the largest number of simultaneously running devices in each production cycle is counted.

[0042] Based on the number of devices in the most device combination running simultaneously in each production cycle, the most device combination with the largest number of devices is screened.

[0043] For example, Figure 3As shown, the target exhaust pressure obtaining mode is: first, extracting the output exhaust pressure of the gas compressor exhaust port to each gas using equipment and the input exhaust pressure of each gas using equipment in each production cycle from the compressor operation history record.

[0044] Then, the output exhaust pressure of the gas compressor exhaust port to each gas using equipment and the corresponding input exhaust pressure are analyzed for deviation to obtain the exhaust pressure deviation value of each gas using equipment. Through exhaust pressure deviation value analysis, the loss of each section of pipeline is accurately quantified, so that the target exhaust pressure setting no longer ignores the pipeline loss pressure, and the inlet pressure of the gas using equipment is ensured to meet the standard.

[0045] Then, the exhaust pressure deviation value of each gas using equipment in each production cycle is counted, and the mean value thereof is taken as the pipeline loss pressure of the gas compressor exhaust port to each gas using equipment. Through mean value statistics of multiple production cycles, instantaneous fluctuations can be smoothed, and the pipeline loss pressure is close to the long-term true level, ensuring the stability of the target exhaust pressure.

[0046] Finally, the maximum pipeline loss pressure is selected from the pipeline loss pressure of the gas compressor exhaust port to each gas using equipment, and the sum of the minimum required pressure required for the normal operation of the gas using equipment is taken as the target exhaust pressure.

[0047] The present application determines the minimum required pressure required for the normal operation of the gas using equipment based on the working parameters of each gas using equipment, and obtains the target exhaust pressure by combining the pipeline loss pressure of the gas compressor exhaust port to each gas using equipment, so that the target exhaust pressure accurately matches the dynamic demand of the gas using equipment, avoids energy waste caused by excessively high pressure, and prevents the gas using equipment from stopping due to excessively low pressure, thereby ensuring production continuity.

[0048] The control parameter analysis module analyzes the control parameters required for the operation of the gas compressor based on the target exhaust pressure, the control parameters including the regulated speed and the intake valve opening degree, and transmits the control parameters to the control hub.

[0049] It should be noted that the control parameter analysis module specifically includes: determining the speed corresponding to the target exhaust pressure according to the pressure and speed standard characteristic curve corresponding to the gas compressor, taking the maximum value of the adaptive speed range of the target exhaust pressure as the adaptive speed range maximum value, and taking the rated minimum stable speed of the gas compressor as the adaptive speed range minimum value.

[0050] The rated minimum stable speed of the gas compressor is calibrated from the factory, which refers to the minimum operating speed of the compressor without surge and excessive vibration. If the speed is lower than the minimum operating speed, the airflow inside the compressor will be turbulent or surging, causing parts to wear out and even stop.

[0051] The rated working flow rate is extracted from the working parameters of each gas using device in the maximum device combination, summed to obtain the maximum simultaneous working flow rate, and the required speed is calculated according to the theoretical displacement formula of the gas compressor.

[0052] If the required speed is in the adaptive speed range, and the exhaust pressure of the required speed on the pressure-speed standard characteristic curve is greater than or equal to the target exhaust pressure, the required speed is taken as the regulated speed required for the gas compressor body to operate, otherwise the required speed is recalculated until the regulated speed required for the gas compressor body to operate is determined.

[0053] Wherein, the recalculated required speed needs to recheck the maximum simultaneous working flow rate or adjust the displacement formula parameters, such as confirming whether the cylinder diameter or piston stroke is the latest measured value.

[0054] If the above-mentioned is operated according to the rated maximum speed, the exhaust pressure will be higher than the target exhaust pressure due to the too high speed, the compressor needs to do extra work to release pressure, causing energy waste; if it is operated according to the rated minimum speed, the maximum simultaneous working flow rate cannot be met, resulting in the pressure drop of the gas using device, the present application matches the required speed based on the maximum simultaneous working flow rate, ensures that the speed can cover the maximum gas demand, meets the flow and pressure demand, and reduces invalid work.

[0055] The control parameter analysis module specifically further comprises: substituting the regulated speed required for the gas compressor body to operate into the theoretical displacement formula of the gas compressor to obtain the theoretical displacement corresponding to the regulated speed. Wherein, the theoretical displacement formula of the gas compressor is the prior art, which will not be described in detail.

[0056] The three-dimensional standard characteristic curve of pressure, displacement and opening degree corresponding to the gas compressor is retrieved, the coordinate point corresponding to the theoretical displacement and the target exhaust pressure is positioned in the curve, and the opening degree corresponding to the coordinate point is read, which is recorded as the initial opening degree.

[0057] If the initial opening degree is greater than the rated minimum stable opening degree of the gas compressor, the initial opening degree is taken as the exhaust valve opening degree, otherwise the rated minimum stable opening degree is taken as the exhaust valve opening degree.

[0058] In the above-mentioned, when the opening degree is too large, the intake amount will exceed the demand, and the compressor needs to release excess gas through the pressure relief valve, wasting energy; if the opening degree is too small, the intake amount will be insufficient, the displacement will decrease, and the flow demand cannot be met; this module determines the exhaust valve opening degree through the three-dimensional standard characteristic curve of pressure, displacement and opening degree corresponding to the gas compressor, to ensure that the opening degree is just suitable for displacement and pressure, and to improve the compression efficiency.

[0059] In one specific embodiment, the standard characteristic curve of the gas compressor is the exhaust pressure-speed relationship measured by experiments before the compressor leaves the factory. It reflects the maximum exhaust capacity of the same compressor at different speeds. The higher the speed, the greater the exhaust pressure.

[0060] The three-dimensional standard characteristic curves of pressure, displacement and opening degree of the gas compressor are the three-dimensional relationship between the actual measured discharge pressure, theoretical displacement and discharge valve opening degree of the compressor at the factory. They reflect the optimal intake opening degree under different displacement and pressure. The larger the discharge valve opening degree, the more intake air and the larger the displacement.

[0061] This invention analyzes the control parameters required for the operation of a gas compressor based on the target exhaust pressure and the corresponding standard characteristic curve of the gas compressor. The control parameters are then transmitted to the control center to ensure that the speed regulation and intake valve opening are precisely matched to the target exhaust pressure and flow requirements. This avoids problems such as ineffective work or insufficient gas supply, while improving compression efficiency, reducing energy consumption, and achieving energy-saving operation of the compressor.

[0062] The exhaust pressure compliance analysis module collects the actual exhaust pressure of the gas compressor and compares it with the target exhaust pressure to determine whether the actual exhaust pressure meets the exhaust requirements.

[0063] like Figure 4 As shown, the specific content of the exhaust pressure compliance analysis module is as follows: the actual exhaust pressure is compared with the target exhaust pressure. If the real-time exhaust pressure is within the preset fluctuation range of the target exhaust pressure, it is determined that the actual exhaust pressure meets the exhaust requirements, a pressure control trigger signal is generated, and it is transmitted to the control center.

[0064] If the real-time exhaust pressure exceeds the preset fluctuation range of the target exhaust pressure, it is determined that the actual exhaust pressure does not meet the exhaust requirements.

[0065] The preset fluctuation range is the allowable deviation range of the target exhaust pressure, which is usually set as the target exhaust pressure ± a fixed percentage. For example, if the target exhaust pressure is 1.01 MPa, and the conventional control accuracy of the reference gas compressor is ±2% pressure fluctuation, then the preset fluctuation range can be set to 1.01 MPa ± 0.02 MPa.

[0066] This invention compares the actual exhaust pressure of the gas compressor with the target exhaust pressure to determine whether the actual exhaust pressure meets the exhaust requirements, thereby ensuring that the actual exhaust pressure of the compressor is consistent with the target exhaust pressure, and providing a precise triggering basis for subsequent control adjustments.

[0067] The control response evaluation module adjusts the control parameters of the gas compressor when the exhaust requirement is not met, analyzes the control response and timeliness of the exhaust pressure according to the control time interval of the adjustment process, calculates the response and timeliness rate of the gas compressor in the running process, and feeds back.

[0068] It should be noted that the adjustment of the control parameters of the gas compressor is as follows: first, compare the real-time exhaust pressure with the preset fluctuation range of the target exhaust pressure to obtain the deviation value and type of the real-time exhaust pressure from the target exhaust pressure.

[0069] Second, based on the deviation value and type, the adjustment speed and the adjustment exhaust valve opening degree are determined from the corresponding pressure and speed standard characteristic curve and the three-dimensional standard characteristic curve of pressure, displacement and opening degree of the gas compressor.

[0070] Wherein the deviation type includes positive deviation and negative deviation. When the deviation type is positive deviation, the adjustment speed corresponding to the deviation value when the real-time exhaust pressure decreases is searched from the pressure and speed standard characteristic curve; when the deviation type is negative deviation, the adjustment speed corresponding to the deviation value when the real-time exhaust pressure reaches is searched from the pressure and speed standard characteristic curve.

[0071] According to the theoretical displacement formula of the gas compressor, the theoretical displacement corresponding to the adjustment speed is calculated, and according to the above-mentioned searching method of adjustment speed, the corresponding adjustment exhaust valve opening degree is searched from the three-dimensional standard characteristic curve of pressure, displacement and opening degree according to the calculated theoretical displacement and deviation value and type.

[0072] Third, the control parameters of the gas compressor are adjusted according to the adjustment speed and the adjustment exhaust valve opening degree, and the exhaust pressure of the gas compressor is collected in real time until the exhaust pressure meets the exhaust requirement.

[0073] The above-mentioned deviation value and type are accurately obtained by comparing the real-time exhaust pressure with the preset fluctuation range of the target exhaust pressure, and the adjustment is made according to the determined adjustment speed and adjustment exhaust valve opening degree, thereby reducing the energy consumption loss caused by blind adjustment, ensuring that the exhaust pressure is stable and meets the requirements, effectively reducing the risk of shutdown of gas-consuming equipment due to substandard pressure, and finally realizing the goals of high efficiency, energy saving, stable gas supply and production continuity.

[0074] The analysis of the control response and timeliness of the exhaust pressure is as follows: taking the control parameter adjustment time of the gas compressor as the starting time point and the time when the exhaust pressure of the gas compressor meets the exhaust requirement as the ending time point, the control time interval between the starting time point and the ending time point is calculated.

[0075] If the control time interval is less than the response reference time, it is determined that the control response of the exhaust pressure is timely, otherwise it is determined that the control response of the exhaust pressure is not timely.

[0076] The response reference time can be set according to an industry standard in the art, for example, in an embodiment, the response reference time corresponding to the gas compressor is set as 60 seconds by default.

[0077] The response timeliness rate of the gas compressor during operation is specifically obtained by obtaining the control response timeliness of the gas compressor during operation at each control parameter adjustment time, and screening the control parameter adjustment times with control response timeliness.

[0078] The response timeliness rate is obtained by taking the ratio of the control parameter adjustment times with control response timeliness to the total number of control parameter adjustments of the gas compressor during operation.

[0079] If the response timeliness rate is less than the set response timeliness rate threshold, a warning feedback is sent through the control hub.

[0080] The control parameter of the gas compressor is adjusted, the control response timeliness of the exhaust pressure is analyzed according to the control time interval of the adjustment process, the response timeliness rate of the gas compressor during operation is counted, and feedback is performed, so as to ensure the control response timeliness of the exhaust pressure, and the deficiencies of the control mechanism are found and optimized in time, the stability and reliability of the compressor operation are improved, and the gas equipment is ensured to provide a gas source meeting the requirements for a long time.

[0081] The above embodiments can be realized wholly or partially by software, hardware, firmware or any combination thereof. When realized by software, the above embodiments can be realized in the form of a computer program product wholly or partially.

[0082] Those skilled in the art can realize that the modules and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized by hardware or software depends on the specific application and design constraints of the technical solutions. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0083] In addition, the functional modules in each embodiment of the present application can be integrated in one processing module, or each module can exist physically alone, or two or more modules can be integrated in one module.

[0084] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

[0085] Finally, the above merely describes preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-efficiency and energy-saving gas compressor, characterized in that, include: The intake air filtration and analysis module filters the intake air of the gas compressor, detects the cleanliness characteristic parameters of the filtered intake air, and determines whether the intake air meets the intake air cleanliness standards. The exhaust pressure determination module determines the minimum required pressure for normal operation of each gas-consuming device based on the operating parameters of each device, and obtains the target exhaust pressure by combining the pipeline loss pressure from the gas compressor exhaust port to each device. The control parameter analysis module analyzes the control parameters required for the operation of the gas compressor based on the target exhaust pressure. The control parameters include the speed control and the intake valve opening. The control parameters are then transmitted to the control center. The exhaust pressure compliance analysis module collects the actual exhaust pressure of the gas compressor and compares it with the target exhaust pressure to determine whether the actual exhaust pressure meets the exhaust requirements. The control response evaluation module adjusts the control parameters of the gas compressor when the exhaust requirements are not met. It analyzes the timeliness of the control response to the exhaust pressure based on the control time interval during the adjustment process, calculates the timeliness rate of the gas compressor's response during operation, and provides feedback.

2. The high-efficiency energy-saving gas compressor according to claim 1, characterized in that: The intake air filtration analysis module includes a primary filtration unit, a secondary filtration unit, and an intake air detection unit. The primary filtration unit is used to intercept and filter solid impurities in the intake air. The secondary filtration unit is used to adsorb and filter gaseous impurities in the intake air after solid impurities have been filtered. The intake detection unit is used to detect the cleanliness characteristic parameters of the filtered intake air, including the solid impurity content and the gaseous impurity concentration, and compares them with the preset intake air cleanliness standard of the gas compressor. If the content of solid impurities or the concentration of gaseous impurities is greater than the corresponding standard threshold in the intake air cleanliness standard, the intake air does not meet the intake air cleanliness standard; otherwise, the intake air meets the intake air cleanliness standard.

3. The high-efficiency energy-saving gas compressor according to claim 1, characterized in that: The minimum required pressure for the normal operation of the gas-using equipment is determined as follows: Extract the start and stop times of all gas-consuming equipment connected to the gas compressor in each production cycle from the compressor operation history, and filter the equipment combination with the largest number of simultaneously operating equipment; Extract the minimum allowable pressure requirement from the operating parameters of each gas-consuming device in the combination of the most devices, and take the maximum value of the minimum allowable pressure requirement in descending order as the peak value of the simultaneous operating pressure requirement. Based on the maximum pressure fluctuation value of each gas-consuming equipment in each production cycle in the most equipment combination, the peak pressure demand for simultaneous operation is corrected to obtain the minimum required pressure for normal operation of the gas-consuming equipment.

4. A high-efficiency energy-saving gas compressor according to claim 3, characterized in that: The target exhaust pressure is obtained as follows: Extract the output exhaust pressure from the gas compressor exhaust port to each gas-consuming device and the input exhaust pressure of each gas-consuming device from the compressor operation history record for each production cycle; By analyzing the deviation between the output exhaust pressure from the gas compressor exhaust port to each gas-consuming device and the corresponding input exhaust pressure, the exhaust pressure deviation value of each gas-consuming device is obtained. The exhaust pressure deviation of each gas-consuming equipment in each production cycle is statistically analyzed, and the average value is used as the pipeline loss pressure from the gas compressor exhaust port to each gas-consuming equipment. The maximum pipeline loss pressure is selected from the pipeline loss pressure from the gas compressor exhaust port to each gas-consuming device, and the sum of this pressure and the minimum required pressure for normal operation of the gas-consuming device is taken as the target exhaust pressure.

5. A high-efficiency energy-saving gas compressor according to claim 4, characterized in that: The control parameter analysis module specifically includes: Based on the standard characteristic curve of pressure and speed of the gas compressor, determine the speed corresponding to the target exhaust pressure, and take it as the maximum value of the suitable speed range for the target exhaust pressure, and take the rated minimum stable speed of the gas compressor as the minimum value of the suitable speed range. Extract the rated working flow rate from the working parameters of each gas-consuming device in the maximum equipment combination, sum them up to obtain the maximum simultaneous working flow rate, and calculate the required speed according to the theoretical displacement formula of the gas compressor. If the required speed is within the suitable speed range, and the exhaust pressure on the pressure-speed standard characteristic curve is greater than or equal to the target exhaust pressure, then the required speed is taken as the control speed required for the operation of the gas compressor body. Otherwise, the required speed is recalculated until the control speed required for the operation of the gas compressor body is determined.

6. A high-efficiency energy-saving gas compressor according to claim 5, characterized in that: The control parameter analysis module further includes: Substitute the required operating speed of the gas compressor body into the theoretical displacement formula of the gas compressor to obtain the theoretical displacement corresponding to the operating speed. Retrieve the three-dimensional standard characteristic curves of pressure, displacement and opening degree of the gas compressor, locate the coordinate point corresponding to the theoretical displacement and the target exhaust pressure in the curve, read the opening degree corresponding to the coordinate point, and record it as the initial opening degree. If the initial opening is greater than the rated minimum stable opening of the gas compressor, the initial opening is used as the exhaust valve opening; otherwise, the rated minimum stable opening is used as the exhaust valve opening.

7. A high-efficiency energy-saving gas compressor according to claim 1, characterized in that: The specific contents of the exhaust pressure conformity analysis module are as follows: The actual exhaust pressure is compared with the target exhaust pressure. If the real-time exhaust pressure is within the preset fluctuation range of the target exhaust pressure, the actual exhaust pressure is determined to meet the exhaust requirements, a pressure control trigger signal is generated, and it is transmitted to the control center. If the real-time exhaust pressure exceeds the preset fluctuation range of the target exhaust pressure, it is determined that the actual exhaust pressure does not meet the exhaust requirements.

8. A high-efficiency energy-saving gas compressor according to claim 1, characterized in that: The process of adjusting the control parameters of the gas compressor is as follows: The deviation between the real-time exhaust pressure and the target exhaust pressure within the preset fluctuation range is compared to obtain the deviation value and type of the real-time exhaust pressure and the target exhaust pressure. Based on the deviation value and deviation type, the adjustment speed and the adjustment valve opening are determined from the standard characteristic curves of pressure and speed and the three-dimensional standard characteristic curves of pressure, displacement and opening degree of the gas compressor. The control parameters of the gas compressor are adjusted by regulating the rotation speed and the opening of the exhaust valve, and the exhaust pressure of the gas compressor is collected in real time until the exhaust pressure meets the exhaust requirements.

9. A high-efficiency energy-saving gas compressor according to claim 8, characterized in that: The analysis of the timeliness of the control response to the exhaust pressure is as follows: The control time interval between the start and end time points is calculated, with the start time point being the moment when the control parameters of the gas compressor are adjusted and the end time point being the moment when the exhaust pressure of the gas compressor meets the exhaust requirements. If the control time interval is less than the response reference time, the control response of the exhaust pressure is considered timely; otherwise, the control response of the exhaust pressure is considered untimely.

10. A high-efficiency energy-saving gas compressor according to claim 9, characterized in that: The timeliness of response during the operation of the statistical gas compressor specifically includes: The timeliness of control response during each adjustment of control parameters of the gas compressor during operation is obtained, and the number of control parameter adjustments with timely control response is screened. The response time rate is the ratio of the number of times the control parameters are adjusted in a timely manner to the total number of times the control parameters are adjusted during the operation of the gas compressor. If the response time rate is less than the set response time rate threshold, an early warning feedback will be issued through the control center.

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