CN215990612U - Opening of air compressor machine DCS system usefulness stops circuit - Google Patents
Opening of air compressor machine DCS system usefulness stops circuit Download PDFInfo
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- CN215990612U CN215990612U CN202121649913.8U CN202121649913U CN215990612U CN 215990612 U CN215990612 U CN 215990612U CN 202121649913 U CN202121649913 U CN 202121649913U CN 215990612 U CN215990612 U CN 215990612U
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Abstract
The utility model discloses a start-stop circuit for an air compressor DCS system, which comprises: a remote start module; a remote outage module; a triangle starting module; a triangular contactor module; a star contactor module; a main contactor module; the remote starting module, the remote outage module, the star starting module and the triangle starting module are all connected in parallel on a first power supply, and the triangle contactor module, the star contactor module and the main contactor module are all connected in parallel on a second power supply. The utility model discloses a what air compressor machine DCS system was used opens and stops the circuit and set up through the cooperation of each module, can accomplish air compressor machine DCS distant place start, add uninstallation, shut down basic function such as fortune to can realize motor star/triangle switching control and the soft shutdown function of air compressor machine in DCS. The function of the controller of the original air compressor can be comprehensively replaced and expanded, the parameter setting and setting of the air compressor can be completed more conveniently, and the control mode of the air compressor is optimized.
Description
Technical Field
The utility model relates to the technical field of air compressors, in particular to a start-stop circuit for a DCS (distributed control system) of an air compressor.
Background
In the field of power production, an air compressor is an important production auxiliary device and provides various air sources for a system, and the safe and reliable operation of an air compressor control system is an indispensable link for ensuring the safe and efficient operation of a power plant. At present, air compressor generally adopts singlechip or PLC control, and control program is comparatively solidification, and maintainer generally can't adjust controller internal parameter, and when the air compressor machine controller broke down, the air compressor machine had the risk of out of control. Meanwhile, the single chip microcomputer or the PLC is adopted for control, the man-machine interaction function is poor, the accident abnormity analysis capability is poor, the state of the air compressor cannot be monitored in real time in a central control room, fault information cannot be recalled in time when the air compressor is abnormal, and the problems cause great influence on daily maintenance and overhaul of the equipment.
With the development of the industrial power control industry, a DCS (distributed control system) has gained wide acceptance in the industry due to its advantages of strong logic configuration function, good man-machine interaction performance, convenient accident recall, and the like, and at present, the occupancy rate in a power production control system is up to more than 95%, but the problem of being not convenient enough when the existing DCS is used for setting and timing parameters of an air compressor is also existed.
Based on the situation, the utility model provides a start-stop circuit for the DCS of the air compressor, which can effectively solve one or more problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a start-stop circuit for an air compressor DCS system. The start-stop circuit for the air compressor DCS system is simple in structure and convenient to use, can complete basic functions of remote start, loading and unloading, shutdown and the like of the air compressor DCS through the matched arrangement of the modules, and can realize motor star/triangle switching control and air compressor soft shutdown functions in the DCS. The function of the controller of the original air compressor can be comprehensively replaced and expanded, the parameter setting and setting of the air compressor can be completed more conveniently, and the control mode of the air compressor is optimized. Meanwhile, the method has strong universality and can be better applied to common engineering configuration software groups.
The utility model is realized by the following technical scheme:
the utility model provides an air compressor machine DCS system is used opens and stops circuit, includes:
the remote starting module comprises an air compressor remote starting switch, a relay 8K1 coil and a relay 8K2 normally closed contact which are sequentially connected in series, and the air compressor remote starting switch is connected with a first relay 8K1 normally open contact in parallel;
the remote shutdown module comprises an air compressor remote shutdown switch and a relay 8K2 coil which are sequentially connected in series;
the star-shaped starting module comprises an air compressor motor star-shaped starting switch and a relay 8K3 coil which are sequentially connected in series;
the triangular starting module comprises a second relay 8K1 normally open contact, a relay 8K3 normally closed contact and a relay 8K4 coil which are sequentially connected in series;
the triangular contactor module comprises a relay 8K4 normally open contact and a contactor 3K1 coil which are sequentially connected in series;
the star-shaped contactor module comprises a relay 8K3 normally open contact and a contactor 3K2 coil which are sequentially connected in series;
the main contactor module comprises a third relay 8K1 normally open contact and a contactor 3K3 coil which are sequentially connected in series;
the remote starting module, the remote outage module, the star starting module and the triangle starting module are all connected in parallel to a first power supply, and the triangle contactor module, the star contactor module and the main contactor module are all connected in parallel to a second power supply.
The utility model aims to provide a start-stop circuit for an air compressor DCS system. The start-stop circuit for the air compressor DCS system is simple in structure and convenient to use, can complete basic functions of remote start, loading and unloading, shutdown and the like of the air compressor DCS through the matched arrangement of the modules, and can realize motor star/triangle switching control and air compressor soft shutdown functions in the DCS. The function of the controller of the original air compressor can be comprehensively replaced and expanded, the parameter setting and setting of the air compressor can be completed more conveniently, and the control mode of the air compressor is optimized. Meanwhile, the method has strong universality and can be better applied to common engineering configuration software groups.
Preferably, the start-stop circuit comprises a motor operation module, and the motor operation module comprises a motor M, a contactor 3K1 normally open contact, a contactor 3K2 normally open contact and a contactor 3K3 normally open contact;
the motor M comprises first terminals W1, V1, U1, second terminals W2, V2 and U2, wherein normally open contacts of a contactor 3K3 are connected in series on the first terminals W1, V1 and U1, and normally open contacts of a contactor 3K1 and a contactor 3K2 are connected in series on the second terminals W2, V2 and U2 respectively.
Preferably, the triangular contactor module comprises contactor 3K2 normally closed contacts, and the star contactor module comprises contactor 3K1 normally closed contacts; the contactor 3K2 normally closed contact is connected in series between relay 8K4 normally open contact and contactor 3K1 coil, contactor 3K1 normally closed contact is connected in series between relay 8K3 normally open contact and contactor 3K2 coil.
Preferably, the first power supply is a 24V dc voltage.
Preferably, the second power supply is 220V of alternating voltage.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
the start-stop circuit for the air compressor DCS system is simple in structure and convenient to use, can complete basic functions of remote start, loading and unloading, shutdown and the like of the air compressor DCS through the matched arrangement of the modules, and can realize motor star/triangle switching control and air compressor soft shutdown functions in the DCS. The function of the controller of the original air compressor can be comprehensively replaced and expanded, the parameter setting and setting of the air compressor can be completed more conveniently, and the control mode of the air compressor is optimized. Meanwhile, the method has strong universality and can be better applied to common engineering configuration software groups.
Drawings
FIG. 1 is an electrical schematic of a first part of the present invention;
FIG. 2 is an electrical schematic of a second part of the utility model;
FIG. 3 is an electrical schematic of a third aspect of the present invention;
FIG. 4 is an electrical schematic diagram of the DCS system of the present invention;
FIG. 5 is an electrical schematic diagram of another portion of the DCS of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1 to 5, the present invention provides a start/stop circuit for an air compressor DCS system, including:
the remote starting module comprises an air compressor remote starting switch 11, a relay 8K1 coil 12 and a relay 8K2 normally closed contact 13 which are sequentially connected in series, and the air compressor remote starting switch 11 is connected with a first relay 8K1 normally open contact 14 in parallel;
the remote shutdown module comprises an air compressor remote shutdown switch 21 and a relay 8K2 coil 22 which are sequentially connected in series;
the star-shaped starting module comprises an air compressor motor star-shaped starting switch 31 and a relay 8K3 coil 32 which are sequentially connected in series;
the triangular starting module comprises a normally open contact 41 of a second relay 8K1, a normally closed contact 42 of a relay 8K3 and a coil 43 of the relay 8K4 which are sequentially connected in series;
the triangular contactor module comprises a relay 8K4 normally open contact 51 and a contactor 3K1 coil 52 which are sequentially connected in series;
the star-shaped contactor module comprises a relay 8K3 normally open contact 61 and a contactor 3K2 coil 62 which are sequentially connected in series;
the main contactor module comprises a third relay 8K1 normally open contact 71 and a contactor 3K3 coil 72 which are sequentially connected in series;
the remote starting module, the remote outage module, the star starting module and the triangle starting module are all connected in parallel to a first power supply, and the triangle contactor module, the star contactor module and the main contactor module are all connected in parallel to a second power supply.
Example 2:
as shown in fig. 1 to 5, the present invention provides a start/stop circuit for an air compressor DCS system, including:
the remote starting module comprises an air compressor remote starting switch 11, a relay 8K1 coil 12 and a relay 8K2 normally closed contact 13 which are sequentially connected in series, and the air compressor remote starting switch 11 is connected with a first relay 8K1 normally open contact 14 in parallel;
the remote shutdown module comprises an air compressor remote shutdown switch 21 and a relay 8K2 coil 22 which are sequentially connected in series;
the star-shaped starting module comprises an air compressor motor star-shaped starting switch 31 and a relay 8K3 coil 32 which are sequentially connected in series;
the triangular starting module comprises a normally open contact 41 of a second relay 8K1, a normally closed contact 42 of a relay 8K3 and a coil 43 of the relay 8K4 which are sequentially connected in series;
the triangular contactor module comprises a relay 8K4 normally open contact 51 and a contactor 3K1 coil 52 which are sequentially connected in series;
the star-shaped contactor module comprises a relay 8K3 normally open contact 61 and a contactor 3K2 coil 62 which are sequentially connected in series;
the main contactor module comprises a third relay 8K1 normally open contact 71 and a contactor 3K3 coil 72 which are sequentially connected in series;
the remote starting module, the remote outage module, the star starting module and the triangle starting module are all connected in parallel to a first power supply, and the triangle contactor module, the star contactor module and the main contactor module are all connected in parallel to a second power supply.
Further, in another embodiment, the start-stop circuit comprises a motor operation module, wherein the motor operation module comprises a motor M81, a contactor 3K1 normally open contact 82, a contactor 3K2 normally open contact 83 and a contactor 3K3 normally open contact 84;
the motor M81 comprises a first terminal W1, a first terminal V1, a second terminal U1, a second terminal W2, a first terminal V2 and a second terminal U2, wherein the first terminal W1, the first terminal V1 and the first terminal U1 are connected with a normally open contact 84 of a contactor 3K3 in series, and the second terminal W2, the first terminal V2 and the second terminal U2 are connected with a normally open contact 82 of a contactor 3K1 and a normally open contact 83 of a contactor 3K2 in series.
With the above configuration, the motor M81 can be started in two ways, i.e., star start and delta start.
Further, in another embodiment, the delta contactor module includes contactor 3K2 normally closed contact 53, the star contactor module includes contactor 3K1 normally closed contact 63; the contactor 3K2 normally closed contact 53 is connected in series between the relay 8K4 normally open contact 51 and the contactor 3K1 coil 52, and the contactor 3K1 normally closed contact 63 is connected in series between the relay 8K3 normally open contact 61 and the contactor 3K2 coil 62.
The normally closed contact setting of contactors 3K1, 3K2 have played the interlocking effect, prevent triangle-shaped contactor and star contactor actuation simultaneously.
Further, in another embodiment, the first power source is a 24V dc voltage.
Further, in another embodiment, the second power source is 220V ac voltage.
The working principle of one embodiment of the utility model is as follows:
a starting and stopping circuit for an air compressor DCS system is characterized in that when the starting is needed, an air compressor starting and stopping control function block 101 sends an air compressor starting instruction, a DVP pin sends a 10s pulse starting instruction, and an air compressor motor star starting module sends a 10s pulse air compressor motor star starting instruction 102;
after the relay 8K3 receives the air compressor motor star starting command 102, the air compressor motor star starting switch 31 is closed, the coil 32 of the relay 8K3 is electrified, the normally closed contact 42 of the relay 8K3 is disconnected, and the coil 43 of the relay 8K4 is ensured to be electrified.
Normally open contact 61 of relay 8K3 is closed, coil 62 of contactor 3K2 is electrified, and the star connection mode of the motor is started at the moment.
The normally closed contact 53 of the contactor 3K2 is disconnected, the coil 52 of the contactor 3K1 is ensured to be powered off, and the locking triangle connection mode is started.
After the delay 2s function block 103, the air compressor remote start function block 104 sends out an 8s pulse command.
After the relay 8K1 receives the remote start command of the air compressor, the coil 12 of the relay 8K1 is electrified, the normally open contact 14 of the first relay 8K1 is closed, and the coil 12 of the relay 8K1 is electrified and self-maintained.
The normally open contact 71 of the third relay 8K1 is closed, the coil 72 of the contactor 3K3 is electrified, and the motor is electrified and started.
After the DVP pin sends out 10s of pulses and disappears, the air compressor motor star starting instruction 102 disappears, the coil 32 of the relay 8K3 loses power, the normally closed contact 42 of the relay 8K3 restores to a closed state, and the coil 43 of the relay 8K4 is electrified.
The normally open contact 61 of the relay 8K3 is restored to the off state, the coil 62 of the contactor 3K2 is electrified, the relay 8K4 is normally open and closed, the coil 52 of the contactor 3K1 is electrified, and the motor operation mode is switched to the triangle shape by the star shape.
After the air compressor is started, the running signal of the air compressor passes through the first delay 20s function block 109, the exhaust pressure of the air compressor passes through the low limit judgment function block 110, the automatic opening condition of the air compressor loading and unloading control function block 116 is triggered by the first and gate 111, the air compressor loading and unloading electromagnetic valve 117 and the air compressor discharge electromagnetic valve 118 are electrified, and the air compressor starts to be loaded.
The air compressor running signal passes through the second delay 20s function block 112, the air compressor discharge pressure passes through the high limit judgment function block 113, the air compressor running signal and the air compressor discharge pressure trigger the automatic closing condition of the air compressor loading and unloading control function block 116 through the second and gate 114, the air compressor loading and unloading electromagnetic valve 117 and the air compressor discharge electromagnetic valve 118 are powered off, and the air compressor starts to unload.
When the air compressor needs to be shut down, the air compressor start-stop control module 101 sends out an air compressor shutdown instruction 106, the RVP pin sends out a 10s pulse shutdown instruction, the pulse time is expanded to 40s through the 40s pulse function block 105, and the air compressor shutdown instruction 106 is sent out.
The air compressor shutdown command 106 triggers the automatic shut-off condition of the air compressor loading and unloading control function 116 through the or gate 115, the air compressor loading and unloading solenoid valve 117 and the air compressor discharge solenoid valve 118 are de-energized, and the air compressor starts unloading.
After 30s, the air compressor shutdown command is delayed by a function block 107 of 30s, and an air compressor remote shutdown command 108 is sent.
After the relay 8K2 receives the air compressor remote shutdown command 108, the coil 22 of the relay 8K2 is electrified, the normally closed contact 13 of the relay 8K2 is disconnected, the electrified self-holding loop of the coil 12 of the relay 8K1 is broken, the normally open contact 71 of the third relay 8K1 is restored to the disconnected state by closing, the coil 72 of the contactor 3K3 is electrified, and the air compressor motor stops.
According to the description and the drawings of the utility model, a person skilled in the art can easily manufacture or use the start-stop circuit for the air compressor DCS system of the utility model and can produce the positive effects described in the utility model.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (5)
1. The utility model provides an air compressor machine DCS system is used opens and stops circuit which characterized in that includes:
the remote starting module comprises an air compressor remote starting switch (11), a relay 8K1 coil (12) and a relay 8K2 normally closed contact (13) which are sequentially connected in series, wherein the air compressor remote starting switch (11) is connected with a first relay 8K1 normally open contact (14) in parallel;
the remote shutdown module comprises an air compressor remote shutdown switch (21) and a relay 8K2 coil (22) which are sequentially connected in series;
the star-shaped starting module comprises an air compressor motor star-shaped starting switch (31) and a relay 8K3 coil (32) which are sequentially connected in series;
the triangular starting module comprises a second relay 8K1 normally open contact (41), a relay 8K3 normally closed contact (42) and a relay 8K4 coil (43) which are sequentially connected in series;
the triangular contactor module comprises a relay 8K4 normally open contact (51) and a contactor 3K1 coil (52) which are sequentially connected in series;
the star-shaped contactor module comprises a relay 8K3 normally open contact (61) and a contactor 3K2 coil (62) which are sequentially connected in series;
the main contactor module comprises a third relay 8K1 normally open contact (71) and a contactor 3K3 coil (72) which are sequentially connected in series;
the remote starting module, the remote outage module, the star starting module and the triangle starting module are all connected in parallel to a first power supply, and the triangle contactor module, the star contactor module and the main contactor module are all connected in parallel to a second power supply.
2. The start-stop circuit for the air compressor DCS system according to claim 1, characterized in that: the starting and stopping circuit comprises a motor operation module, wherein the motor operation module comprises a motor M (81), a contactor 3K1 normally open contact (82), a contactor 3K2 normally open contact (83) and a contactor 3K3 normally open contact (84);
the motor M (81) comprises first terminals W1, V1, U1, second terminals W2, V2 and U2, wherein normally open contacts (84) of a contactor 3K3 are connected in series on the first terminals W1, V1 and U1, and normally open contacts (82) of a contactor 3K1 and normally open contacts (83) of a contactor 3K2 are connected in series on the second terminals W2, V2 and U2 respectively.
3. The start-stop circuit for the air compressor DCS system according to claim 1, characterized in that: the delta contactor module comprises contactor 3K2 normally closed contacts (53), the star contactor module comprises contactor 3K1 normally closed contacts (63); the contactor 3K2 normally closed contact (53) is connected in series between relay 8K4 normally open contact (51) and contactor 3K1 coil (52), contactor 3K1 normally closed contact (63) is connected in series between relay 8K3 normally open contact (61) and contactor 3K2 coil (62).
4. The start-stop circuit for the air compressor DCS system according to claim 1, characterized in that: the first power supply is 24V direct current voltage.
5. The start-stop circuit for the air compressor DCS system according to claim 1, characterized in that: the second power supply is 220V alternating voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121649913.8U CN215990612U (en) | 2021-07-20 | 2021-07-20 | Opening of air compressor machine DCS system usefulness stops circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121649913.8U CN215990612U (en) | 2021-07-20 | 2021-07-20 | Opening of air compressor machine DCS system usefulness stops circuit |
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| Publication Number | Publication Date |
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| CN215990612U true CN215990612U (en) | 2022-03-08 |
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| CN202121649913.8U Active CN215990612U (en) | 2021-07-20 | 2021-07-20 | Opening of air compressor machine DCS system usefulness stops circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641154A (en) * | 2021-07-20 | 2021-11-12 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for air compressor DCS (distributed control System) and DCS control method |
-
2021
- 2021-07-20 CN CN202121649913.8U patent/CN215990612U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113641154A (en) * | 2021-07-20 | 2021-11-12 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for air compressor DCS (distributed control System) and DCS control method |
| CN113641154B (en) * | 2021-07-20 | 2023-07-25 | 浙江浙能嘉华发电有限公司 | Start-stop circuit for DCS system of air compressor and DCS control method |
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