CN217873379U - Safety interlocking configuration system of centrifugal compressor unit and centrifugal compressor unit - Google Patents
Safety interlocking configuration system of centrifugal compressor unit and centrifugal compressor unit Download PDFInfo
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- CN217873379U CN217873379U CN202220383852.3U CN202220383852U CN217873379U CN 217873379 U CN217873379 U CN 217873379U CN 202220383852 U CN202220383852 U CN 202220383852U CN 217873379 U CN217873379 U CN 217873379U
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Abstract
The utility model discloses a centrifugal compressor unit's safety interlock configuration system and centrifugal compressor unit relates to compressor operation technical field, has solved among the correlation technique centrifugal compressor unit and has lacked the technical problem who deals with the handling measure that the feed gas interrupts or reduces suddenly. The centrifugal compressor unit comprises a centrifugal compressor, a feed gas inlet pipeline connected with the centrifugal compressor and a compressor unit control system used for controlling the centrifugal compressor to operate, the safety interlocking configuration system comprises a pressure measuring point arranged on the feed gas inlet pipeline, the pressure measuring point is in signal connection with the compressor unit control system, and the compressor unit control system controls the centrifugal compressor to safely stop when the pressure value measured by the pressure measuring point is smaller than a first preset value. The scheme can stop safely in time by suddenly interrupting or reducing the raw material gas, meets the requirement of stopping under sudden conditions, protects equipment and ensures safe operation.
Description
Technical Field
The utility model relates to a compressor operation technical field especially relates to centrifugal compressor unit's safety interlock configuration system and centrifugal compressor unit.
Background
One of the safe and stable operating conditions for a centrifugal compressor unit is safety protection measures, including safety interlock settings. The safety interlocking of the centrifugal compressor unit comprises a starting interlocking and a stopping interlocking, a plurality of sub conditions are provided under the starting interlocking and the stopping interlocking, and the safety interlocking action can be triggered when any one condition is not met, so that the safe starting and stopping of the compressor unit are ensured.
Most interlock arrangements currently ensure safe operation of the compressor package and safe shutdown in emergency situations. However, the safety interlock only has low pressure and low flow rate of the raw material gas, and alarm and anti-surge control, and cannot meet the requirement of safe operation of the centrifugal compressor unit when the raw material gas is suddenly interrupted and reduced.
SUMMERY OF THE UTILITY MODEL
The application provides a centrifugal compressor unit's safety interlock configuration system and centrifugal compressor unit, has solved the technical problem that centrifugal compressor unit lacks the measure of handling that the handling of handling the feed gas is interrupted suddenly or is reduced among the correlation technique.
The application provides a centrifugal compressor unit's safety interlock configuration system, centrifugal compressor unit includes centrifugal compressor, the raw material gas inlet pipeline that is connected with centrifugal compressor and is used for controlling the compressor unit control system of centrifugal compressor operation, and safety interlock configuration system sets up pressure measurement point at raw material gas inlet pipeline, and pressure measurement point and compressor unit control system signal connection to compressor unit control system control centrifugal compressor safety shutdown when the pressure value that pressure measurement point measured is less than first default.
Optionally, the centrifugal compressor train further comprises an anti-surge valve connected to the centrifugal compressor and the feed gas inlet line;
when the measured pressure value of the pressure measuring point received by the compressor unit control system is smaller than a second preset value and is larger than or equal to a first preset value, the compressor unit control system gives an alarm of low pressure of the raw material gas and controls the anti-surge valve to act so as to ensure the safe operation of the centrifugal compressor unit;
the second preset value is larger than the first preset value and smaller than the pressure value at the pressure measuring point when the centrifugal compressor unit operates safely.
Optionally, the centrifugal compressor package further comprises a driver to drive the centrifugal compressor, an anti-surge valve connected to the centrifugal compressor and the feed gas inlet line;
when the pressure value measured at the pressure measuring point is less than a first preset value, the compressor set control system controls the centrifugal compressor to safely stop, and the method comprises the following steps:
the compressor unit control system sends out an instruction control to control the driving machine to stop working;
and the compressor unit control system sends an instruction to control the anti-surge valve to open.
Optionally, the centrifugal compressor package further comprises an outlet bleed valve connected to the centrifugal compressor;
when the pressure value measured at the pressure measuring point is less than a first preset value, the compressor set control system controls the centrifugal compressor to safely stop, and the method comprises the following steps:
and the compressor unit control system sends a command to control the outlet emptying valve to open and release pressure.
Optionally, the driver machine is controlled to stop working, including cutting off the power or steam supply to the driver machine.
Optionally, controlling the anti-surge valve to open comprises controlling the anti-surge valve to fully open.
Optionally, adding a pressure measurement point to the feed gas inlet line, including providing a plurality of pressure measurement points to the feed gas inlet line;
and when the proportion of the number of the pressure values measured in the plurality of pressure measurement points which are smaller than the first preset value in the total number of the pressure measurement points is larger than 50%, the compressor set control system controls the centrifugal compressor to safely stop.
Optionally, adding pressure measurement points to the raw material gas inlet pipeline, including setting three pressure measurement points in the raw material gas inlet pipeline, and when pressure values measured by at least two of the three pressure measurement points are smaller than a first preset value, controlling the centrifugal compressor to safely stop by the compressor unit control system.
Optionally, a pressure measuring point is added to the feed gas inlet line, including a pressure measuring point in the form of a gas pressure measuring sensor mounted to the feed gas inlet line.
A centrifugal compressor unit comprises a centrifugal compressor, a feed gas inlet pipeline, a compressor unit control system and the safety interlocking configuration system, wherein the feed gas inlet pipeline is connected with the centrifugal compressor, and the compressor unit control system is used for controlling the centrifugal compressor to run so as to control the centrifugal compressor to safely stop through the compressor unit control system when a pressure value measured by a pressure measuring point arranged on the feed gas inlet pipeline is smaller than a first preset value.
The beneficial effect of this application is as follows: the application provides a safety interlock configuration system of a centrifugal compressor unit, wherein a pressure measuring point is arranged on a feed gas inlet pipeline connected with the centrifugal compressor to measure a pressure value in the pipeline in the operation process, the pressure measuring point transmits a measured pressure value signal to a compressor unit control system, and when the compressor unit control system judges that the measured pressure value is lower than a first preset value, the centrifugal compressor is controlled to be safely stopped; the scheme can stop safely in time by suddenly interrupting or reducing the raw material gas, meets the requirement of stopping under sudden conditions, protects equipment and ensures safe operation.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a block diagram of a safety interlock configuration system for a centrifugal compressor package according to the present application.
The attached drawings are marked as follows: 10-centrifugal compressor, 20-raw material gas inlet pipeline, 21-pressure measuring point, 30-compressor set control system, 40-anti-surge valve, 50-driving machine, 60-outlet emptying valve, 70-raw material gas to subsequent working section, and 80-raw material gas.
Detailed Description
The embodiment of the application solves the technical problem that a centrifugal compressor unit in the related technology lacks a treatment measure for dealing with sudden interruption or reduction of feed gas by providing a safety interlocking configuration system of the centrifugal compressor unit and the centrifugal compressor unit.
In order to solve the technical problems, the general idea of the embodiment of the present application is as follows:
a safety interlocking configuration system of a centrifugal compressor unit comprises a centrifugal compressor, a feed gas inlet pipeline connected with the centrifugal compressor and a compressor unit control system used for controlling the centrifugal compressor to operate.
In order to better understand the technical scheme, the technical scheme is described in detail in the following with reference to the attached drawings of the specification and specific embodiments.
The centrifugal compressor set is widely applied to devices of petrochemical industry, pharmacy, oxygen generation, long-distance gas transportation, pressurization and the like, is core equipment for stable operation of the devices, and has long period, safe and stable operation which is related to the benefit of enterprises. The safe and stable operation of the centrifugal compressor set depends on the manufacturing quality of equipment, process conditions, the skill and experience of operators and safety protection measures, wherein one of the safety protection measures is safety interlock setting. Generally, a centrifugal compressor package includes a centrifugal compressor 10, a control system, a lubrication system, a cooling separation device, and associated piping. The control system mainly comprises a speed regulation control unit, an anti-surge control unit, a safety interlock unit, a parameter measuring element and a computer, and the safe and stable operation of the centrifugal compressor set is ensured through the internal calculation of the control system.
The safety interlocking of the centrifugal compressor unit comprises starting interlocking and stopping interlocking, a plurality of sub conditions exist under the starting interlocking and the stopping interlocking, and any condition which is not met triggers the safety interlocking action to ensure the safe starting and stopping of the compressor unit. At present, most interlock arrangements can ensure safe operation of a compressor unit and safe stop under emergency conditions, but sudden interruption and reduction of feed gas 80 cannot meet the safe operation of a centrifugal compressor unit, and the safety interlock only has low pressure and low flow rate of the feed gas 80, alarm and anti-surge control and does not trigger the interlock when the compressor unit is stopped.
As shown in fig. 1, in the centrifugal compressor set, the raw material gas 80 comes from the outside and is delivered to the centrifugal compressor 10 through the raw material gas inlet pipeline 20, the centrifugal compressor 10 is driven by the driving machine 50, and after reaching the rated condition, the raw material gas is delivered to the subsequent section through a pipeline, that is, the raw material gas in fig. 1 is delivered to the subsequent section 70; an anti-surge valve 40 is typically provided, the anti-surge valve 40 connecting the centrifugal compressor 10 outlet line and the feed gas inlet line 20, respectively.
Referring to fig. 1, the present embodiment discloses a safety interlock configuration system for a centrifugal compressor assembly, which includes a centrifugal compressor 10, a raw material gas inlet line 20 connected to the centrifugal compressor 10, and a compressor assembly control system 30 for controlling the operation of the centrifugal compressor 10. The safety interlock configuration system comprises a pressure measuring point 21 arranged on the raw material gas inlet pipeline 20, wherein the pressure measuring point 21 is in signal connection with the compressor unit control system 30, so that the compressor unit control system 30 controls the centrifugal compressor 10 to be safely stopped when the pressure value measured by the pressure measuring point 21 is smaller than a first preset value.
Specifically, by providing a pressure measurement point 21 in the raw material gas inlet line 20 connected to the centrifugal compressor 10, the pressure value in the line during operation is measured, and is compared with the first preset value. Specifically, the pressure measurement point 21 transmits a measured pressure value signal to the compressor unit control system 30, and when the compressor unit control system 30 determines that the measured pressure value is lower than the first preset value, the centrifugal compressor 10 is controlled to stop safely. The scheme can stop or reduce the raw material gas 80 suddenly, can stop safely in time, meets the requirements of stopping under sudden conditions, protects equipment and ensures safe operation.
With regard to the setting of the first preset value, when the gas pressure in the feed gas inlet line 20 is below this value, a corresponding safe shutdown of the centrifugal compressor 10 is required. The first preset value is a set value and is set according to specific operation equipment and working conditions.
In combination with a safety interlock to provide an alarm function when the feed gas 80 is at low pressure and low flow, and in certain possible embodiments, to provide an alarm function and an emergency stop function, the centrifugal compressor package further includes an anti-surge valve 40 connected to the centrifugal compressor 10 and the feed gas inlet line 20; when the measured pressure value of the pressure measuring point 21 received by the compressor set control system 30 is smaller than the second preset value and is larger than or equal to the first preset value, the compressor set control system 30 gives an alarm that the pressure of the feed gas 80 is low and controls the anti-surge valve 40 to act, the gas at the outlet of the centrifugal compressor 10 returns to the feed gas inlet pipeline 20 through the anti-surge valve 40, so that the measured pressure value of the pressure measuring point 21 is larger than or equal to the second preset value, and the safe operation of the centrifugal compressor set is ensured; the second preset value is larger than the first preset value and is smaller than the pressure value at the pressure measuring point 21 when the centrifugal compressor set is in safe operation.
The centrifugal compressor package is of a range of pressure values at the pressure measurement point 21 for safe operation. When the measured pressure value of the pressure measuring point 21 is smaller than the pressure value range, namely smaller than the second preset value and larger than or equal to the first preset value, the pressure of the raw material gas 80 is low for alarming, the compressor unit control system 30 can send a command to the anti-surge valve 40, and the anti-surge valve 40 acts to match the inlet flow and the pressure, so that the safe operation of the centrifugal compressor unit is ensured; when the measured pressure value of the pressure measuring point 21 is smaller than the first preset value, the compressor unit control system 30 sends out an interlocking signal to control the centrifugal compressor 10 to stop safely.
In order to more specifically reflect the relationship between the alarm signal and the interlock signal, a specific description is provided herein, assuming that the pressure value of the raw material gas inlet pipeline 20 is in the range of 5 to 10KPa when the centrifugal compressor unit normally operates, when the measured pressure value of the pressure measurement point 21 is less than 1 or 2KPa, the compressor unit control system 30 sends out the interlock signal; when the measured pressure value of the pressure measuring point 21 is less than 5KPa and greater than 1 or 2KPa, the compressor unit control system 30 sends out an alarm signal, and simultaneously the compressor unit control system 30 sends out a command to the anti-surge valve 40, and the anti-surge valve 40 acts to match the inlet flow and pressure, so as to ensure the safe operation of the centrifugal compressor unit.
As regards the above-mentioned safety shutdown of the centrifugal compressor 10 controlled by the compressor group control system 30 when the pressure value measured at the pressure measurement point 21 is smaller than the first preset value, the safety shutdown of the centrifugal compressor comprises: the compressor unit control system 30 sends out a command control for controlling the driving machine 50 to stop working and cutting off the power source of the centrifugal compressor 10; the compressor package control system 30 issues commands to control the anti-surge valve 40 to open, improving the anti-surge capability.
Optionally, the centrifugal compressor package further comprises an outlet blow-down valve 60 connected to the centrifugal compressor 10; the above-mentioned compressor unit control system 30 controls the centrifugal compressor 10 to safely stop when the pressure value measured at the pressure measurement point 21 is smaller than the first preset value, and further includes: the compressor unit control system 30 sends a command to control the outlet blow-down valve 60 to open for pressure relief, thereby ensuring the safe pressure relief of the centrifugal compressor unit and reducing the damage to equipment, pipelines and the like caused by time delay.
Alternatively, the driving machine 50 is controlled to stop, including cutting off the power or steam source of the driving machine 50, i.e. cutting off the power when the driving machine 50 is driven by electric energy, and cutting off the steam source when the driving machine 50 is driven by steam pressure energy.
Alternatively, controlling the anti-surge valve 40 to open includes controlling the anti-surge valve 40 to act to fully open quickly, preventing surge.
In order to improve the adverse phenomenon that a single measuring point may be distorted to cause the interlock malfunction, in some possible embodiments, a plurality of pressure measuring points 21 are provided in the feed gas inlet line 20, the number of the pressure measuring points 21 is not less than 3, and the compressor unit control system 30 controls the centrifugal compressor 10 to be safely stopped when the ratio of the number of the pressure values measured in the plurality of pressure measuring points 21 which are less than the first preset value to the total number of the pressure measuring points 21 is more than 50%.
The above 50% may be selected from 60%, 70%, 75% and the like.
In one possible embodiment, adding a pressure measurement point 21 to the raw material gas inlet line 20 includes setting three pressure measurement points 21 on the raw material gas inlet line 20, and controlling the centrifugal compressor 10 to safely stop by the compressor set control system 30 when the pressure values measured at least two of the three pressure measurement points 21 are simultaneously smaller than the first preset value.
Optionally, a pressure measurement point 21 is added to the feed gas inlet line 20, including the pressure measurement point 21 mounted to the feed gas inlet line 20 in the form of a gas pressure measurement sensor.
Referring to fig. 1, the centrifugal compressor assembly further includes a centrifugal compressor 10, a raw material gas inlet pipeline 20, a compressor assembly control system 30, and the safety interlock configuration system, where the raw material gas inlet pipeline 20 is connected to the centrifugal compressor 10, and the compressor assembly control system 30 is configured to control the centrifugal compressor 10 to operate, so that when a pressure value measured by a pressure measurement point 21 disposed on the raw material gas inlet pipeline 20 is smaller than a first preset value, the compressor assembly control system 30 controls the centrifugal compressor 10 to safely stop. Through the interlocking setting, the centrifugal compressor unit is guaranteed to be quickly decompressed and stopped under the emergency condition, and therefore damage to equipment and pipelines caused by time delay is reduced.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A safety interlock configuration system for a centrifugal compressor train, the centrifugal compressor train including a centrifugal compressor, a feed gas inlet line connected to the centrifugal compressor, and a compressor train control system for controlling operation of the centrifugal compressor, the safety interlock configuration system comprising:
and a pressure measuring point is arranged on the feed gas inlet pipeline, and the pressure measuring point is in signal connection with the compressor unit control system, so that the compressor unit control system controls the centrifugal compressor to safely stop when the pressure value measured by the pressure measuring point is smaller than a first preset value.
2. The safety interlock configuration system of claim 1, wherein said centrifugal compressor train further comprises an anti-surge valve connected to said centrifugal compressor and said feed gas inlet line;
when the measured pressure value of the pressure measuring point received by the compressor unit control system is smaller than a second preset value and is larger than or equal to the first preset value, the compressor unit control system gives an alarm of low pressure of the raw material gas and controls the anti-surge valve to act so as to ensure the safe operation of the centrifugal compressor unit;
wherein the second preset value is greater than the first preset value and is less than the pressure value at the pressure measurement point when the centrifugal compressor set is in safe operation.
3. The safety interlock configuration system of claim 1, wherein the centrifugal compressor train further comprises a drive machine that drives the centrifugal compressor, an anti-surge valve connected to the centrifugal compressor and the feed gas inlet line;
when the pressure value measured at the pressure measuring point is smaller than a first preset value, the compressor set control system controls the centrifugal compressor to be safely stopped, and the method comprises the following steps:
the compressor unit control system sends out an instruction control to control the driving machine to stop working;
and the compressor unit control system sends an instruction to control the anti-surge valve to be opened.
4. The safety interlock configuration system of claim 3 wherein said centrifugal compressor train further comprises an outlet bleed valve connected to said centrifugal compressor;
when the pressure value measured at the pressure measuring point is smaller than a first preset value, the compressor set control system controls the centrifugal compressor to safely stop, and the method comprises the following steps:
and the compressor unit control system sends an instruction to control the outlet emptying valve to open and release pressure.
5. The safety interlock configuration system of claim 3 wherein said controlling the driver machine to stop comprises cutting power or steam to the driver machine.
6. The safety interlock configuration system of claim 3 wherein said controlling said anti-surge valve to open comprises controlling said anti-surge valve to be fully open.
7. The safety interlock configuration system of any one of claims 1-6 wherein said providing a pressure measurement point at said feed gas inlet line comprises providing a plurality of said pressure measurement points at said feed gas inlet line;
and when the proportion of the number of the pressure values measured in the pressure measurement points which are smaller than the first preset value in the total number of the pressure measurement points is larger than 50%, the compressor set control system controls the centrifugal compressor to be safely stopped.
8. The safety interlock configuration system of claim 7, wherein said providing a pressure measurement point on said feed gas inlet line comprises providing three said pressure measurement points on said feed gas inlet line, wherein said compressor package control system controls said centrifugal compressor to safely shut down when at least two of said three pressure measurement points measure pressure values that are less than said first predetermined value.
9. The safety interlock configuration system of claim 1 wherein said providing a pressure measurement point on said feed gas inlet line comprises said pressure measurement point being mounted to said feed gas inlet line in the form of a gas pressure measurement sensor.
10. A centrifugal compressor assembly, comprising:
a centrifugal compressor;
a feed gas inlet line connected to the centrifugal compressor;
the compressor set control system is used for controlling the centrifugal compressor to operate; and
the safety interlock configuration system of any one of claims 1-9, to control safe shutdown of the centrifugal compressor by the compressor package control system when a pressure value measured at the pressure measurement point provided in the feed gas inlet line is less than a first preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383852.3U CN217873379U (en) | 2022-02-23 | 2022-02-23 | Safety interlocking configuration system of centrifugal compressor unit and centrifugal compressor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220383852.3U CN217873379U (en) | 2022-02-23 | 2022-02-23 | Safety interlocking configuration system of centrifugal compressor unit and centrifugal compressor unit |
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| Publication Number | Publication Date |
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| CN217873379U true CN217873379U (en) | 2022-11-22 |
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| CN202220383852.3U Active CN217873379U (en) | 2022-02-23 | 2022-02-23 | Safety interlocking configuration system of centrifugal compressor unit and centrifugal compressor unit |
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