EP3983681A1 - Verfahren zur erkennung von schäden an einem verdichter - Google Patents
Verfahren zur erkennung von schäden an einem verdichterInfo
- Publication number
- EP3983681A1 EP3983681A1 EP20729760.7A EP20729760A EP3983681A1 EP 3983681 A1 EP3983681 A1 EP 3983681A1 EP 20729760 A EP20729760 A EP 20729760A EP 3983681 A1 EP3983681 A1 EP 3983681A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- suction
- temperature
- determined
- calculated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000005259 measurement Methods 0.000 claims abstract description 75
- 238000012937 correction Methods 0.000 claims abstract description 49
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 238000004590 computer program Methods 0.000 claims description 14
- 230000000052 comparative effect Effects 0.000 claims description 9
- 239000007789 gas Substances 0.000 description 25
- 238000012544 monitoring process Methods 0.000 description 12
- 238000004364 calculation method Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/02—Pressure in the inlet chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/04—Pressure in the outlet chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/10—Inlet temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2205/00—Fluid parameters
- F04B2205/11—Outlet temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2207/00—External parameters
- F04B2207/70—Warnings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
Definitions
- the invention relates to a method for detecting damage to a compressor which has a suction side and a pressure side, in which, based on measurement data for suction pressure, suction temperature, end pressure and end temperature, a comparison variable is calculated as a measure of damage.
- Compressors are fluid energy machines that convert energy supplied as work machines into other energy states. Compressors are used in a variety of ways, for example in the form of piston compressors for compressing gases.
- Compressors are usually operated continuously for several months to years and only switched off for maintenance purposes. During this continuous operation, the functionality of components of the compressor can be impaired, for example by wear, deposits from or component failure. This can lead to a reduction in the efficiency of the compressor and even to its complete inoperability. In order to identify such processes at an early stage and, if necessary, to be able to take measures to counteract damage such as wear, erosion or deposits, various monitoring and diagnostic methods are known in the prior art. With reciprocating compressors, monitoring the valves on the suction side as well as on the pressure side is of great relevance in this regard.
- the document EP 1 184 570 A2 describes a system for monitoring the valves of a reciprocating compressor, in which piezoelectric vibration sensors are attached to each cylinder of the compressor.
- the sensors use vibrations to record the noises that the valves make when they open and close. Subsequent signal processing allows conclusions to be drawn about the current status of the compressor.
- the US patent application US 2013/0115109 A1 describes a method for monitoring compressors in which process data are recorded by means of pressure and temperature sensors at the inlet and outlet of the compressor. Evaluation logic is used to determine the pressure loss across the valves of the compressor in order to determine setpoint values for the outlet temperature of the compressor. By comparing the calculated setpoint with the actual value of the outlet temperature, the evaluation logic determines the current operating status of the compressor and issues a warning if necessary.
- the document JP 2002 147905 A discloses a method for monitoring a compressor in a cooling device, in which a criterion for the state is provided by pressure and temperature sensors at the inlet and outlet of the compressor from measured values of the suction temperature, the suction pressure, the outlet temperature and the outlet pressure of the compressor it is determined, for example by calculating a polytropic exponent.
- a disadvantage of the methods and systems known from the prior art is that they require complex instrumentation, e.g. in the form of vibration sensors on all components to be detected, and / or complex evaluation logic to provide the desired information from the measured signals.
- the object was to provide a method for monitoring compressors that can reliably supply information about possible damage inside the compressor, while being simple and inexpensive to install and maintain.
- the invention relates to a method for detecting damage to a compressor which has a suction side and a pressure side, the method comprising the following steps:
- step (iii) Determination of a comparative variable from at least one of the measured variables not used in step (ii) (p1, T1, p2, T2);
- the target value determined in step (ii) is determined according to a model of isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h), and the correction factor (h) is adjusted using measurement data.
- the isentropic exponent (K) of the gas to be compressed required for the calculation is known to the person skilled in the art and can be found, for example, in publicly accessible or commercially available databases or tables.
- the isentropic compression model is sufficient to describe the real processes well enough.
- the correction factor (h) can be omitted or set to a neutral value.
- the correction factor (h) In the case of gases to be compressed, on the other hand, which deviate from the behavior of an ideal gas due to their thermodynamic properties, the correction factor (h) must be included in the calculation of the target values, which takes into account the effects of the real compression, for example due to the heating of the gas during the suction stroke due to heat conduction on the inner walls of the compressor, in the suction valve or by mixing the sucked in gas with hot residual gas in the compression chamber.
- This correction factor (h) is adjusted based on measurement data.
- Process steps (i) to (iv) can be carried out in the order given. However, different sequences of the method steps are also covered by the invention. In particular, steps (ii) and (iii) can also be carried out in reverse order or else simultaneously.
- a calculated final temperature (T2b) as a function of the measurement data of the final pressure (p2), the suction pressure (p1) and the suction temperature (T1) is determined as the setpoint variable, and in step (iii ) the measured final temperature (T2) is determined as a comparison variable.
- the procedure thus comprises the steps:
- the final temperature (T2b) calculated in step (ii) is determined according to a model of the isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h), and the correction factor (h) is adjusted based on measurement data becomes.
- a calculated suction temperature (T1b) is determined as a setpoint as a function of the measurement data of the suction pressure (p1), the end pressure (p2) and the end temperature (T2), and in step ( iii) the measured suction temperature (T1) is determined as a comparison variable.
- the procedure thus comprises the steps:
- step (iv) comparison of the comparison variable (T1) and the target variable (T1 b) as a measure of damage to the compressor;
- the suction temperature (T1 b) calculated in step (ii) is determined according to a model of the isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h), and the correction factor (h) based on measurement data is fitted.
- a calculated final pressure (p2b) is determined as a setpoint as a function of the measurement data of the final temperature (T2), the suction pressure (p1) and the suction temperature (T1), and in step ( iii) the measured final pressure (p2) is determined as a comparison variable.
- the procedure thus comprises the steps:
- the final pressure (p2b) calculated in step (ii) is determined according to a model of isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h), and the correction factor (h) is adjusted based on measurement data becomes.
- a calculated suction pressure (p1 b) as a function of the measurement data of the suction temperature (T1), the end pressure (p2) and the end temperature (T2) is determined as the setpoint variable in step (ii), and in step (iii) the measured suction pressure (p1) is determined as a comparison variable.
- step (iv) comparison of the comparison variable (p1) and the target variable (p1 b) as a measure of damage to the compressor;
- the suction pressure (p1b) calculated in step (ii) is determined according to a model of the isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h), and the correction factor (h) is determined on the basis of measurement data is adjusted.
- T2b T1 / h (r2 / r1) L (1-1 / k)
- the correction factor h can be constant or adjusted as a function of the measured variables. In a variant, the correction factor h is determined as a function of the suction temperature (T1), the suction pressure (p1) and the final pressure (p2).
- the calculated suction temperature (T1 b) is based on the equation
- T1 b T2 h (r1 / r2) L (1-1 / k)
- the correction factor h can be constant or adjusted as a function of the measured variables. In a variant, the correction factor h is determined as a function of the final temperature (T2), the suction pressure (p1) and the final pressure (p2).
- p2b p1 (h T2 / T1) L (k / (k-1))
- the correction factor h can be constant or adjusted as a function of the measured variables. In a As a variant, the correction factor h is determined as a function of the suction temperature (T1), the suction pressure (p1) and the end temperature (T2).
- the calculated suction pressure (p1 b) is based on the equation
- p1 b p2 (T1 / T2 / h) L (k / (k-1))
- the correction factor h can be constant or adjusted as a function of the measured variables. In a variant, the correction factor h is determined as a function of the suction temperature (T1), the final temperature (T2) and the final pressure (p2).
- the adjustment of the correction factor h can be done in different ways.
- the correction factor h is determined by regression from historical measurement data.
- the adjustment of the correction factor (h) takes place on the basis of measurement data in that, after a compressor revision, the measurement values recorded after restarting are defined as good and are used to adjust the correction factor.
- the compressor can also be run through specified operating states in a targeted manner in order to define the good state.
- the correction factor h is based on the equation
- the correction factor h a p1 + b T2 / T1 + c is calculated, and the factors a, b and c are determined by regression from measurement data of suction temperature (T1), suction pressure (p1) and end temperature (T2).
- measurable variables can also be used, for example a speed of the compressor (N), control signals for the suction valve lift (s), a dead space volume (k) or the gas composition (wi, W2, W3, etc.).
- the correction factor h can, for example, according to the equation
- h a T1 + b p2 / p1 + c + d N + e - s + f - k + gi wi + g2 W2 + ... is calculated, and the factors (a, b, c, d, e, f , gi, g2, ...) can be determined by regression from the corresponding measurement data.
- the correction factor h can, for example, according to the equation
- h a T2 + b p1 / p2 + c + d N + es + f - k + gi wi + g2 W2 + ... is calculated, and the factors (a, b, c, d, e, f, gi , g2, ...) can be determined by regression from the corresponding measurement data.
- the correction factor h can, for example, according to the equation
- h a p1 + b T2 / T 1 + c + d - N + es + fk + gi Wi + g2 W2 + ... is calculated, and the factors (a, b, c, d, e, f, gi , g2, ...) can be determined by regression from the corresponding measurement data.
- the correction factor h can, for example, according to the equation
- the inventive method can be applied both to compressors with only one compressor stage and to compressors with several compressor stages.
- process steps (i) to (iv) are preferably carried out for at least two compressor stages, particularly preferably for all compressor stages. This makes it possible to localize damage in the sense that it can be assigned to the respective compressor stage.
- Another object of the invention is a device for detecting damage to a compressor which has a suction side and a pressure side, the device comprising the following:
- a calculation unit which is set up to (a) receive a predefined setpoint as an input variable and / or to determine a setpoint as a function of the measurement data, (b) to determine a comparison variable as a function of the measurement data, and (c) one To carry out a comparison between the target value and the reference value, as well as
- an output unit for outputting a signal that represents a measure of damage to the compressor.
- the device according to the invention can be used both in compressors with only one compressor stage and in compressors with several compressor stages.
- the device according to the invention preferably comprises sensors for recording measurement data on at least two compressor stages, particularly preferably on all compressor stages, and the calculation unit is preferably directed to the calculation steps (a), (b) and (c) to be carried out for at least two compressor stages, particularly preferably for all compressor stages.
- the computer program according to the invention contains program code which, when the computer program is executed on a suitable computer system, is suitable for carrying out the method according to the invention.
- the computer program product according to the invention comprises a computer-readable medium and a computer program with program code stored on the computer-readable medium, which are suitable for performing the method according to the invention when the computer program is running on a suitable computer system.
- the objects according to the invention are suitable for detecting a large number of damage to different union machine elements of compressors. Examples are damage to valves, piston rings, stuffing box packings, defective control devices, e.g. at suction valve liftings. The only requirement is that the damage is noticeable in the thermodynamic behavior of the compressor stage under consideration.
- the method according to the invention and the device according to the invention manage with the acquisition and processing of pressure and temperature data.
- the sensors required according to the invention are inexpensive and usually already provided as standard equipment for the compressors. Costly retrofitting with e.g. Vibration sensors are not required.
- the determination of the target variable and the comparative variable and their comparison in steps (ii) to (iv) of the method according to the invention only requires the evaluation of a few mathematical equations and can be implemented with little effort.
- the method according to the invention and the device according to the invention make it possible to identify possible damage such as wear, erosion or deposits at an early stage during the operation of the compressor, so that measures can be taken in good time to prevent component failure and unplanned machine downtime.
- the method according to the invention was applied to the third stage of a compressor in order to detect any damage that might have occurred.
- the compressor was a six-stage, two-crank piston compressor that compresses carbon monoxide from 100 mbarg at approx. 5 ° C to 35 ° C to approx. 325 barg.
- the first stage of the compressor is equipped with a reverse flow control, with which the flow rate of the compressor is between approx. 70% and regulates 100% of the maximum delivery rate.
- the third compressor stage comprises a double-acting piston within a cylinder.
- the cylinder of the third stage is constructed in such a way that the two compression chambers on the cover side and on the crank side suck in their gas from a common suction chamber and convey it into a common pressure chamber.
- the machine is equipped with two plate valves in each compression chamber on the suction and pressure side.
- Each stage of the machine is equipped with temperature sensors and pressure sensors on the suction and pressure side piping.
- Fig. 1 shows an extract from the operating data information system of the compressor for the third compressor stage in the period from September 2015 to October 2016. The following values are shown in the graphics, with the left-hand scale indicating temperatures in degrees Celsius and the right-hand scale indicating pressures in barg: top curve (solid line) final temperature (T2)
- a calculated final temperature (T2b) of the third stage as a function of the measurement data of the final pressure (p2), the suction pressure (p1) and the suction temperature (T1) was determined as a setpoint that represents a good condition of the compressor.
- the calculated end temperature (T2b) was determined using a model of isentropic compression, including the isentropic exponential (K) of the gas to be compressed and a correction factor (h).
- the isentropic exponent for carbon monoxide was set at 1.4 in the relevant pressure and temperature range.
- T2b T1 / h (r2 / r1) L (1-1 / k).
- the correction factor (h) was determined from historical data to be 0.972.
- the measured final temperature (T2) was used as a comparative value for the comparison with the nominal value.
- T2 The measured final temperature
- the compressor was not in operation.
- the calculated final temperature (target value) and the measured final temperature (comparative value) were almost identical. This suggested that the thermodynamic machine elements were completely intact. From the end of November 2015, the first deviations between the measured and calculated final temperature became apparent. Based on experience with previous damage, a deviation of approx. 5 ° C at a pressure ratio (p2 / p1) of approx. 2.5 suggested that the working valves would be slightly damaged, which did not yet require an immediate reaction.
- the method according to the invention on the basis of the device according to the invention has thus reliably and at an early stage detected damage during the operation of the compressor.
- the comparison of the reference value and the target value provided not only a statement as to whether there was damage, but also a measure of the severity of the damage. Based on this, decisions could be made about measures to prevent potential component failure and unplanned machine downtime.
- the method according to the invention was applied to the first stage of a compressor in order to detect any damage that might have occurred.
- the compressor was a seven-stage, two-crank piston compressor that compresses carbon monoxide from 100 mbarg at approx. 5 ° C to 35 ° C to approx. 325 barg.
- the first stage of the compressor is equipped with a reverse flow control with which the flow rate of the compressor can be regulated between approx. 70% and 100% of the maximum flow rate.
- the first compressor stage comprises a double-acting piston within a cylinder.
- the cylinder is designed so that the two the compression chambers on the cover side and on the crank side suck their gas from a common suction chamber and convey it into a common pressure chamber.
- the machine is equipped with three plate valves in each compression chamber on the suction and pressure side.
- Each stage of the machine is equipped with temperature sensors and pressure sensors on the suction and pressure side pipes.
- Fig. 2 shows an extract from the operating data information system of the compressor for the first compressor stage in the period from December 2017 to May 2018. The following values are shown in the graphics, with the left scale indicating temperatures in degrees Celsius and the right scale indicating pressures in barg: top curve (solid line) final temperature (T2)
- a calculated final temperature (T2b) of the first stage as a function of the measurement data of the final pressure (p2), the suction pressure (p1) and the suction temperature (T1) was determined as a setpoint that represents a good condition of the compressor.
- the calculated end temperature (T2b) was determined using a model of isentropic compression, including the isentropic exponential (K) of the gas to be compressed and a correction factor (h).
- the isentropic exponent for carbon monoxide was set at 1.4 in the relevant pressure and temperature range.
- the measured final temperature (T2) was used as a comparative value for the comparison with the nominal value.
- T2 The measured final temperature
- the compressor was not in operation.
- the calculated end temperature (target value) and the measured end temperature (reference value) were almost identical. This suggested that the thermodynamic machine elements were completely intact. In fact, no damage to the compressor was found in the period under consideration.
- the method according to the invention based on the device according to the invention is able to detect damage reliably and at an early stage during the operation of the compressor.
- the method according to the invention was applied to a single-stage, double-acting, two-crank piston compressor which compresses hydrogen from 25 barg at approx. 5 ° C to 35 ° C to approx. 40 barg.
- Both cylinders are each equipped with a suction line and a pressure line.
- the compression chambers on the cover side and on the crank side draw their gas from a common suction chamber and deliver into a common pressure chamber.
- the machine is equipped with a ring valve in each compression chamber on the suction side and pressure side.
- the suction-side valves are equipped with a hydraulic return flow control for flow rate control.
- the machine is equipped with temperature sensors and pressure sensors on the suction and pressure side pipes.
- the machine was also equipped with a monitoring device as is known from the prior art.
- This monitoring device comprises temperature sensors on the valve covers on the suction side and the pressure side, which detect the outside temperature of the valve covers. As soon as the measured temperature is above a limit value of 50 ° C, an alarm is triggered which indicates defective valves.
- Fig. 3 shows an excerpt from the operating data information system of the compressor for the period September 2017 to March 2018. The following variables are shown in the graphics, with the left scale temperatures in degrees Celsius and the right scale the pressure ratio (p2 / p1) as a dimensionless number indicates: top curve (solid) final temperature (T2)
- a calculated final temperature (T2b) as a function of the measurement data of the final pressure (p2), the suction pressure (p1) and the suction temperature (T1) was determined as the setpoint that represents a good condition of the compressor.
- the calculated end temperature (T2b) was determined using a model of isentropic compression taking into account the isentropic exponent (K) of the gas to be compressed and a correction factor (h).
- the isentropic exponent for hydrogen was set to 1.4 in the relevant pressure and temperature range.
- T2b T1 / h (r2 / r1) L (1-1 / k).
- the measured final temperature (T2) was used as a comparative value for the comparison with the nominal value.
- the method according to the invention on the basis of the device according to the invention has thus also detected damage reliably and at an early stage during the operation of the compressor, whereas conventional monitoring by means of temperature measurement on valve covers did not provide any indication of possible damage.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19180261 | 2019-06-14 | ||
PCT/EP2020/065490 WO2020249461A1 (de) | 2019-06-14 | 2020-06-04 | Verfahren zur erkennung von schäden an einem verdichter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3983681A1 true EP3983681A1 (de) | 2022-04-20 |
EP3983681B1 EP3983681B1 (de) | 2023-08-09 |
Family
ID=66867017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20729760.7A Active EP3983681B1 (de) | 2019-06-14 | 2020-06-04 | Verfahren zur erkennung von schäden an einem verdichter |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220356873A1 (de) |
EP (1) | EP3983681B1 (de) |
CN (1) | CN113906216B (de) |
WO (1) | WO2020249461A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114876781A (zh) * | 2022-05-13 | 2022-08-09 | 液空厚普氢能源装备有限公司 | 一种加氢站氢气压缩机性能检测方法及系统 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749086A (en) * | 1980-09-10 | 1982-03-20 | Hitachi Ltd | Apparatus for diagnosing operational conditions of compressor |
IT1318802B1 (it) | 2000-08-31 | 2003-09-10 | Nuovo Pignone Spa | Sistema di diagnosi remota dello stato di usura delle valvole diaspirazione e mandata di compressori alternativi. |
JP2002147905A (ja) * | 2000-11-13 | 2002-05-22 | Daikin Ind Ltd | 冷凍装置 |
US20100106458A1 (en) | 2008-10-28 | 2010-04-29 | Leu Ming C | Computer program and method for detecting and predicting valve failure in a reciprocating compressor |
US8807959B2 (en) | 2010-11-30 | 2014-08-19 | General Electric Company | Reciprocating compressor and methods for monitoring operation of same |
US20130115109A1 (en) | 2011-05-05 | 2013-05-09 | William G. Hall | Compressor discharge temperature monitor and alarm |
CN102797671A (zh) * | 2011-05-25 | 2012-11-28 | 中国石油大学(北京) | 一种往复压缩机的故障检测方法与装置 |
CN103147972B (zh) * | 2013-03-19 | 2015-08-05 | 北京化工大学 | 一种基于多传感器信息融合的往复式压缩机故障诊断方法 |
CN104595170B (zh) * | 2014-12-18 | 2016-08-17 | 中国矿业大学 | 一种自适应核高斯混合模型的空压机监控诊断系统及方法 |
US9759213B2 (en) | 2015-07-28 | 2017-09-12 | Computational Systems, Inc. | Compressor valve health monitor |
EP3239684A1 (de) * | 2016-04-29 | 2017-11-01 | Siemens Aktiengesellschaft | Fehlerdiagnose während eines tests einer turbineneinheit |
-
2020
- 2020-06-04 US US17/618,545 patent/US20220356873A1/en active Pending
- 2020-06-04 EP EP20729760.7A patent/EP3983681B1/de active Active
- 2020-06-04 CN CN202080041190.5A patent/CN113906216B/zh active Active
- 2020-06-04 WO PCT/EP2020/065490 patent/WO2020249461A1/de active Application Filing
Also Published As
Publication number | Publication date |
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WO2020249461A1 (de) | 2020-12-17 |
CN113906216B (zh) | 2024-05-14 |
EP3983681B1 (de) | 2023-08-09 |
CN113906216A (zh) | 2022-01-07 |
US20220356873A1 (en) | 2022-11-10 |
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