CN209767231U - PTA device DCS uninterrupted power source control system - Google Patents
PTA device DCS uninterrupted power source control system Download PDFInfo
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- CN209767231U CN209767231U CN201921018599.6U CN201921018599U CN209767231U CN 209767231 U CN209767231 U CN 209767231U CN 201921018599 U CN201921018599 U CN 201921018599U CN 209767231 U CN209767231 U CN 209767231U
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Abstract
the utility model discloses a PTA device DCS uninterrupted power supply control system, which comprises an uninterrupted power supply I, an uninterrupted power supply II, a double power supply change-over switch, a load I and a load II, wherein the uninterrupted power supply I and the uninterrupted power supply II have the same structure; uninterrupted power source I is connected with dual power change over switch one end, the dual power change over switch other end is connected with load I, uninterrupted power source II is connected with dual power change over switch one end and load II, because the power supply mode of load I that uninterrupted power source I takes changes to some extent and has increased power all the way, realize through dual power automatic change over switch, its control mode is for two sets of uninterrupted power source respectively for oneself load power supply for normal condition, detect through dual power automatic change over switch when uninterrupted power source I breaks down and does not have the output and switch over into and supply power by uninterrupted power source II, the reliability of supplying power has been improved greatly like this, and can not influence the power supply of uninterrupted power source II self.
Description
Technical Field
The invention relates to the technical field of PTA production, in particular to a DCS (distributed control system) uninterruptible power supply control system of a PTA device.
background
In order to maximize the productivity and maximize the utilization of public resources in the current PTA industry, a plurality of sets of PTA devices are built together to ensure the yield, reduce the consumption and increase the competitiveness of the industry. Due to the special process characteristics and the risk of long operating cycles of the PTA refining plant coupled with the instability of operation, some unexpected problems occur in some of the main equipment and catalysts in the plant, which requires short shut-down of the refining plant. The maintenance of the refining apparatus results in forced shut-down of the oxidation apparatus, which means a reduction in the production and an increase in consumption without fear. According to incomplete statistics, the existing PTA device continuously producing for more than 3 years in the PTA industry almost has 1 or a few times of unplanned stop every year or partial system stop maintenance, thus increasing maintenance cost and increasing the consumption of public engineering resources without fear.
In the conventional PTA device, an uninterrupted power supply I supplies power to a main device DCS, an uninterrupted power supply II supplies power to an air compressor control system, two sets of uninterrupted power supplies are not in the same transformer substation and respectively supply power to loads in different areas, and two originally designed uninterrupted power supplies are in a single-machine power supply mode. Although the reliability of the power supply of the ups is very high, the stand-alone power supply still has the risk of stopping the power supply due to equipment failure, for example, when the main control board of the ups fails and is not automatically switched, the ups is shut down without voltage output, which may cause the load carried by the ups to lose all power.
Disclosure of Invention
The invention discloses a DCS (distributed control system) uninterruptible power supply control system of a PTA (pure terephthalic acid) device, which comprises an uninterruptible power supply I, an uninterruptible power supply II, a double-power-supply change-over switch, a load I and a load II, wherein the equipment is still in a risk of stopping power supply due to equipment failure when the single machine supplies power, so that all loads carried by the single machine lose power;
The structure of the uninterruptible power supply I is the same as that of the uninterruptible power supply II;
the uninterruptible power supply I is connected with one end of the dual-power-supply change-over switch; the other end of the dual-power transfer switch is connected with the load I;
the uninterruptible power supply II is connected with one end of the dual-power transfer switch and the load II;
The uninterruptible power supply I comprises a mains supply unit, a battery supply unit, a static bypass unit and a maintenance bypass unit;
Further, the commercial power supply unit comprises a commercial power supply, a rectifier, an inverter and a main output switch;
the commercial power supply is connected with one end of the rectifier, the other end of the rectifier is connected with one end of the inverter, and the other end of the inverter is connected with one end of the main output switch;
The battery power supply unit comprises a battery pack power supply, an inverter and a main output switch;
The battery pack power supply is connected with one end of the inverter, and the other end of the inverter is connected with one end of the main output switch;
The static bypass unit comprises a bypass power supply, a change-over switch, an electrostatic switch and a main output switch;
the bypass power supply is connected with one end of the change-over switch, the other end of the change-over switch is connected with one end of the electrostatic switch, and the other end of the electrostatic switch is connected with one end of the main output switch;
The maintenance bypass unit comprises a bypass power supply, a change-over switch and a main output switch;
The bypass power supply is connected with one end of the change-over switch, and the other end of the change-over switch is connected with one end of the main output switch;
The other end of the main output switch is connected with one end of the dual-power transfer switch.
the utility model provides a pair of PTA device DCS uninterrupted power source control system, because the power supply mode of load I that uninterrupted power source I took changes to some extent, increased power all the way, realized through dual supply automatic change over switch, its control mode is normal condition: two sets of uninterrupted power supplies respectively provide power for own load, detect through dual supply automatic transfer switch when uninterrupted power supply I breaks down and does not have the output and switch over into and supply power by uninterrupted power supply II, improved the reliability of supplying power like this greatly, can not influence the power supply of uninterrupted power supply II self moreover. The scheme is improved on the basis of single-machine power supply of the original uninterrupted power supply, so that the reliability is high, and the uninterrupted power supply is simple and easy to operate.
Drawings
in order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a block diagram of the present invention;
fig. 2 is a block diagram of the present invention;
FIG. 3 is an electrical structural diagram of the present invention;
Fig. 4 is a single line diagram illustrating normal operation of the ups i.
In the figure: 1. uninterrupted power source I, 2, uninterrupted power source II, 3, two power transfer switch, 4, load I, 5, load II, 10, commercial power supply unit, 11, battery power supply unit, 12, static bypass unit, 13, maintenance bypass unit, 100, commercial power supply, 101, rectifier, 102, inverter, 103, total output switch, 110, battery pack power supply, 120, bypass power supply, 121, transfer switch, 122, electrostatic switch.
Detailed Description
For making the technical solution and the advantages of the present invention clearer, the following combines the drawings in the embodiments of the present invention, to the technical solution in the embodiments of the present invention is clear and complete description:
fig. 1 is a block diagram of the present invention, fig. 2 is a specific block diagram of the present invention, and fig. 3 is an electrical block diagram of the present invention; the DCS (distributed control system) uninterrupted power supply control system of the PTA device comprises an uninterrupted power supply I1, an uninterrupted power supply II 2, a dual-power transfer switch 3, a load I4 and a load II 5; the structure of the uninterrupted power supply I1 is the same as that of the uninterrupted power supply II 2; the uninterrupted power supply I1 is connected with one end of a double-power-supply change-over switch 3; the other end of the double-power-supply change-over switch 3 is connected with a load I4, and the uninterrupted power supply II 2 is connected with one end of the double-power-supply change-over switch 3 and the load I5;
the uninterrupted power supply I1 comprises a mains supply unit 10, a battery supply unit 11, a static bypass unit 12 and a maintenance bypass unit 13;
Under the working state: the normal operation mode of the uninterruptible power supply I1 is that the commercial power supply unit 10 supplies power, the battery power supply unit 11 is in a floating charge state, when the commercial power supply unit 10 loses power or a rectifier fails, the commercial power supply unit 11 is switched to supply power, when the commercial power supply unit 10 recovers the normal operation mode and automatically switches back to the commercial power supply unit 10 to supply power in the discharge process of the battery power supply unit 11, if the battery power supply unit 11 operates, the discharge voltage is lower than a set value, the battery unit 11 is automatically switched to the static bypass unit 12 to supply power to protect the battery unit 11, and the maintenance bypass unit 13 is used for overhauling the uninterruptible power supply I1;
Under the normal condition, uninterrupted power source I1 provides the power for load I4, and uninterrupted power source II 2 provides the power for load II 5, breaks down when uninterrupted power source I1, when unable to provide the power to load I4, switches into and supplies power for load I4 by uninterrupted power source II 2 through dual power automatic transfer switch 3.
FIG. 4 is a single line diagram illustrating normal operation of the UPS I; the mains supply unit 10 comprises a mains supply 100, a rectifier 101, an inverter 102 and a mains output switch 103; the commercial power supply 100 is connected with one end of a rectifier 101, the other end of the rectifier 101 is connected with one end of an inverter 102, and the other end of the inverter 102 is connected with one end of a main output switch 103; the battery power supply unit 11 includes a battery pack power supply 110, an inverter 102, and a total output switch 103; the battery pack power supply 110 is connected with one end of the inverter 102, and the other end of the inverter 102 is connected with one end of the main output switch 103; the static bypass unit 12 includes a bypass power supply 120, a changeover switch 121, an electrostatic switch 122, and a main output switch 103; the bypass power supply 120 is connected with one end of a change-over switch 121, the other end of the change-over switch 121 is connected with one end of an electrostatic switch 122, and the other end of the electrostatic switch 122 is connected with one end of a main output switch 103; the maintenance bypass unit 13 includes a bypass power supply 120, a changeover switch 121, and a main output switch 103; the bypass power supply 120 is connected to one end of the changeover switch 121, the other end of the changeover switch 121 is connected to one end of the main output switch 103, and the other end of the main output switch 103 is connected to one end of the dual power changeover switch 3.
Further, the dual power automatic transfer switch 3ATS, also called ATSE, is composed of one (or several) transfer switch appliances and other necessary appliances, and is used for detecting a power circuit, and automatically transferring one or more load circuits from a faulty power source to another power source appliance when a power failure occurs, so as to ensure the reliability and safety of power supply. ATS is an English abbreviation of Automatic Transfer Switching Equipment, is named as Automatic Transfer Switching Equipment in Chinese, is widely applied to important places such as buildings, hospitals, airports, docks, fire fighting, metallurgy, chemical engineering, textiles and the like which do not allow power failure, and realizes unattended continuous power supply. The dual-power automatic transfer switch is divided into a PC level and a CB level, the PC level adopts an integrated electro-magnetic transfer switch which is an advanced one of a plurality of ATSs and has the advantages of small structure, high transfer speed and the like, the CB level adopts a molded case circuit breaker to be matched with a control execution mechanism for use, the transfer speed is slower than that of the PC level and the occupied space is larger.
The dual-power automatic transfer switch 3 is industrial (PC) grade, the switching time can reach millisecond grade at the fastest speed, and the cabinet body is arranged beside the cabinet body of the uninterruptible power supply 1, so that cables can be saved and construction is facilitated.
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (2)
1. The utility model provides a PTA device DCS uninterrupted power source control system which characterized in that: the power supply comprises an uninterrupted power supply I (1), an uninterrupted power supply II (2), a dual-power transfer switch (3), a load I (4) and a load II (5);
the structure of the uninterruptible power supply I (1) is the same as that of the uninterruptible power supply II (2);
The uninterruptible power supply I (1) is connected with one end of the dual-power-supply change-over switch (3); the other end of the dual-power transfer switch (3) is connected with the load I (4);
the uninterrupted power supply II (2) is connected with one end of the dual-power transfer switch (3) and the load II (5);
uninterrupted power source I (1) includes commercial power supply unit (10), battery power supply unit (11), static bypass unit (12) and maintenance bypass unit (13).
2. the DCS uninterruptible power control system of the PTA device of claim 1, further characterized in that:
The mains supply unit (10) comprises a mains supply (100), a rectifier (101), an inverter (102) and a total output switch (103);
the commercial power supply (100) is connected with one end of the rectifier (101), the other end of the rectifier (101) is connected with one end of the inverter (102), and the other end of the inverter (102) is connected with one end of the main output switch (103);
the battery power supply unit (11) comprises a battery pack power supply (110), an inverter (102) and a total output switch (103);
the battery pack power supply (110) is connected with one end of the inverter (102), and the other end of the inverter (102) is connected with one end of the main output switch (103);
The static bypass unit (12) comprises a bypass power supply (120), a transfer switch (121), an electrostatic switch (122) and a total output switch (103);
the bypass power supply (120) is connected with one end of the change-over switch (121), the other end of the change-over switch (121) is connected with one end of the electrostatic switch (122), and the other end of the electrostatic switch (122) is connected with one end of the main output switch (103);
The maintenance bypass unit (13) comprises a bypass power supply (120), a change-over switch (121) and a general output switch (103);
the bypass power supply (120) is connected with one end of the change-over switch (121), and the other end of the change-over switch (121) is connected with one end of the main output switch (103);
The other end of the total output switch (103) is connected with one end of the dual-power transfer switch (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921018599.6U CN209767231U (en) | 2019-07-02 | 2019-07-02 | PTA device DCS uninterrupted power source control system |
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| CN201921018599.6U CN209767231U (en) | 2019-07-02 | 2019-07-02 | PTA device DCS uninterrupted power source control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190669A (en) * | 2019-07-02 | 2019-08-30 | 恒力石化（大连）有限公司 | A kind of PTA device DCS uninterruptible power supply control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110190669A (en) * | 2019-07-02 | 2019-08-30 | 恒力石化（大连）有限公司 | A kind of PTA device DCS uninterruptible power supply control system |
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