Emergency power supply system of cluster type thin oil gas holder

Abstract

The utility model provides a cluster type thin oil gas cabinet emergency power supply system, and relates to the technical field of metallurgy. The system comprises a plurality of thin oil gas chambers, a wire inlet unit, a diesel power generation system, a PCL system and a low-voltage bus system, the wire inlet unit comprises a wire inlet voltage detection device and a wire inlet switch; the thin oil gas cabinets and the diesel power generation system are connected with the low-voltage bus system; the incoming line voltage detection device is connected with the incoming line switch; the wire inlet switch is connected with the low-voltage bus system; the PCL system is respectively connected with the incoming line voltage detection device and the diesel power generation system; the incoming line voltage detection device is used for detecting an on-fire voltage signal of an incoming line switch in real time, converting the on-fire voltage signal into an analog quantity signal and sending the analog quantity signal to the PCL system; the PCL system is used for judging whether the on-fire voltage is normal or not and sending a starting signal to the diesel generator system under the condition that the on-fire voltage is abnormal. The cluster type thin oil gas holder emergency power supply system provided by the utility model can prevent gas leakage.

Description

Technical Field

[0001] This application relates to the field of metallurgical technology, and in particular to a clustered thin oil gas holder emergency power supply system. Background Technology

[0002] Metallurgical enterprises generate large amounts of blast furnace gas and coke oven gas during ironmaking, steelmaking, and sintering processes. Currently, the industry, especially large steel enterprises, commonly uses thin oil gas holders (i.e., thin oil gas holders) to collect and store this gas. Often, two or more thin oil gas holders are installed in clusters. The outer shell of the thin oil gas holder consists of a base plate, columns, side plates, a top, and a conduit. Inside, a vertically movable steel piston structure is installed. Gas enters from the bottom of the thin oil gas holder and is stored within the space enclosed by the base plate, piston, and side plates. When the pressure in the inlet pipe of the thin oil gas holder is higher than the pressure inside, gas enters the holder and pushes the piston upward; when the gas level decreases, the piston descends. This reciprocating motion of the piston continuously stores and releases gas.

[0003] The thin oil gas holder uses oil sealing. When the enterprise's power supply system fails, causing a power outage in the low-voltage circuit of the area where the thin oil gas holder is located, the oil pump motor stops working. At this time, the sealing oil cannot be sent to the top of the piston. The oil storage capacity of the static oil tank can only meet the usage for 1 hour. If the power outage lasts for more than 1 hour, there will be no sealing oil available. Without the protection of the sealing oil, the gas stored in the holder will leak, causing serious consequences. Utility Model Content

[0004] This application provides a clustered thin oil gas holder emergency power supply system to solve the gas leakage problem caused by power outages in the prior art.

[0005] This application provides a clustered thin oil gas holder emergency power supply system, including:

[0006] Multiple thin oil gas holders, incoming line units, diesel generator systems, PCL systems, and low-voltage busbar systems; the incoming line units include incoming line voltage detection devices and incoming line switches;

[0007] The plurality of thin oil gas holders and the diesel generator system are all connected to the low-voltage busbar system; the incoming line voltage detection device is connected to the incoming line switch; the incoming line switch is connected to the low-voltage busbar system; the PCL system is connected to both the incoming line voltage detection device and the diesel generator system.

[0008] The incoming line voltage detection device is used to detect the firing voltage signal of the incoming line switch in real time, and after converting the firing voltage signal into an analog signal, send the analog signal to the PCL system.

[0009] The PCL system is used to determine whether the ignition voltage is normal based on the analog signal, and to send a start signal to the diesel generator system if the ignition voltage is abnormal.

[0010] The diesel generator system is used to supply power to the plurality of thin oil gas holders upon receiving the start signal.

[0011] Optionally, the clustered thin oil gas holder emergency power supply system further includes: a PLC system; the PLC system is connected to the incoming line voltage detection device;

[0012] The PLC system is used to receive the analog signal and determine whether the incoming line voltage is normal based on the analog signal.

[0013] Optionally, the incoming line switch includes an undervoltage tripping structure; the undervoltage tripping structure is used to automatically trip when the incoming line switch experiences a power outage.

[0014] Optionally, the clustered thin oil gas holder emergency power supply system further includes: other electrical load switches; the other electrical load switches are connected to the low-voltage bus system; wherein, the other electrical loads are electrical loads that are unrelated to the safety of the multiple thin oil gas holders.

[0015] Optionally, the other electrical load switch includes an undervoltage trip structure; the undervoltage trip structure is used to automatically trip when the other electrical load switch experiences a power outage.

[0016] Optionally, the diesel generator system includes a generator control cabinet and a diesel generator; the generator control cabinet is connected to the diesel generator, the PCL system, and the low-voltage bus system respectively.

[0017] The PLC system is used to send the start signal to the generator control cabinet when the top-fire voltage is abnormal, so that the generator control cabinet can start the diesel generator to generate electricity;

[0018] The PLC system is also used to determine whether the diesel generator is in operation when the ignition voltage is normal, and to send a stop signal to the generator control cabinet when the diesel generator is in operation, so that the generator control cabinet stops the diesel generator.

[0019] Optionally, the low-voltage bus system is a 380-volt bus.

[0020] Optionally, the number of thin oil gas holders is 3.

[0021] Optionally, a sealed oil station is provided at the bottom area of ​​each of the plurality of thin oil gas holders.

[0022] Optionally, the bottom area of ​​each thin oil gas holder may be provided with multiple sealed oil stations.

[0023] Optionally, the number of sealed oil stations is two in the bottom area of ​​each thin oil gas holder.

[0024] The clustered thin oil gas holder emergency power supply system provided in this application embodiment can determine whether the low-voltage system to which the thin oil gas holder belongs is out of power by real-time detection of the ignition voltage of the incoming line switch. This facilitates the automatic start of the diesel generator system when the low-voltage system is out of power, preventing gas leakage caused by power outage and improving the safety of the thin oil gas holder. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram illustrating the working principle of the thin oil gas holder using sealing oil to seal the gas, as provided in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the distribution of clustered thin oil gas holders provided in the embodiments of this application;

[0028] Figure 3 This is one of the structural schematic diagrams of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application;

[0029] Figure 4 This is the second schematic diagram of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application;

[0030] Figure 5 This is the third schematic diagram of the structure of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application;

[0031] Figure 6 This is a schematic diagram of a specific example of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application. Detailed Implementation

[0032] Figure 1 This is a schematic diagram illustrating the working principle of the thin oil gas holder used to seal the gas with sealing oil, as provided in the embodiments of this application. Figure 1 As shown, the oil station at the bottom of the thin oil gas holder sends sealing oil to the static oil tank at the top of the piston through an oil pump motor. The oil then flows slowly down the inner wall of the holder, collects at the oil station at the bottom of the holder, and is once again sent to the top of the piston by the oil pump motor, thus sealing the gas.

[0033] Figure 2 This is a schematic diagram of the distribution of clustered thin oil gas holders provided in an embodiment of this application. For example... Figure 2 As shown, two to three thin oil gas holders are arranged side by side, and two or more sealed oil stations are set up in the bottom area of ​​each thin oil gas holder. The power supply for all oil stations is drawn from a dedicated low-voltage distribution room.

[0034] When a company's power supply system fails, causing a power outage in the dedicated low-voltage system of the clustered thin oil gas holder, all oil pumps in the associated oil station will stop working. If the power outage is prolonged, gas stored inside the holder may leak, potentially leading to gas poisoning among operators and even an explosion if the gas comes into contact with an open flame, with unimaginable consequences. Therefore, this application proposes an emergency power supply system for clustered thin oil gas holders.

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Figure 3 This is one of the structural schematic diagrams of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application. (Refer to...) Figure 3 The clustered thin oil gas holder emergency power supply system provided in this application embodiment may include: multiple thin oil gas holders 10, an incoming line unit 20, a diesel generator system 30, a PCL system 6, and a low-voltage bus system 40; the incoming line unit 20 includes an incoming line voltage detection device 4 and an incoming line switch 1; the multiple thin oil gas holders 10 and the diesel generator system 30 are all connected to the low-voltage bus system 40; the incoming line voltage detection device 4 is connected to the incoming line switch 1; the incoming line switch 1 is connected to the low-voltage bus system 40; the PCL system 6 is connected to the incoming line voltage detection device 4 and the diesel generator system 30 respectively; the incoming line voltage detection device 4 is used to detect the ignition voltage signal of the incoming line switch 1 in real time, and after converting the ignition voltage signal into an analog signal, it sends the analog signal to the PCL system 6; the PCL system 6 is used to determine whether the ignition voltage is normal based on the analog signal, and sends a start signal to the diesel generator system 30 when the ignition voltage is abnormal; the diesel generator system 30 is used to supply power to the multiple thin oil gas holders 10 when it receives the start signal.

[0037] The incoming line voltage detection device 4 is installed on the upper part of the incoming line switch 1. The incoming line voltage detection device 4 can detect the on-line voltage signal of the incoming line switch 1 in real time. The on-line voltage signal of the incoming line switch 1 represents the working status of the incoming power supply of the low-pressure system to which the thin oil gas holder belongs. After detecting the on-line voltage signal of the incoming line switch 1, the incoming line voltage detection device 4 can convert the on-line voltage signal of the incoming line switch 1 into a 4-20mA analog signal.

[0038] After the incoming line voltage detection device 4 converts the incoming line voltage signal into an analog signal, it can be transmitted to the PLC system 6 via a signal cable, so that the PLC system 6 can determine whether the incoming line voltage is normal. Specifically, the PLC system 6 can be a Siemens S7-400 series PLC, which is installed in the low-voltage distribution room.

[0039] The clustered thin oil gas holder emergency power supply system provided in this application embodiment can determine whether the low-voltage system to which the thin oil gas holder belongs is out of power by real-time detection of the ignition voltage of the incoming line switch. This facilitates the automatic start of the diesel generator system when the low-voltage system is out of power, preventing gas leakage caused by power outage and improving the safety of the thin oil gas holder.

[0040] In one embodiment, the incoming line switch includes an undervoltage trip structure; the undervoltage trip structure is used to automatically trip when the incoming line switch experiences a power outage.

[0041] An undervoltage release mechanism is an electrical protection mechanism used to automatically disconnect the circuit when the power supply voltage falls below a set threshold, preventing damage to equipment from voltage instability or abnormally low voltage. Its main functions include protecting electrical equipment from damage, preventing equipment from automatically restarting and causing damage when power is restored, and protecting the safety of personnel.

[0042] The clustered thin oil gas holder emergency power supply system provided in this application embodiment uses an incoming switch with an undervoltage trip structure, which can automatically trip when the switch is powered off, disconnecting the low-voltage system from the power supply of the upstream substation. This prevents the power supplied from the incoming switch to the low-voltage bus system from being "asynchronously" paralleled with the power generated by the diesel generator when the upstream substation resumes operation, thus preventing a short circuit accident.

[0043] Figure 4 This is the second structural schematic diagram of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application. (Refer to...) Figure 4 The clustered thin oil gas holder emergency power supply system provided in this application embodiment also includes: other electrical load switch 5; other electrical load switch 5 is connected to low voltage bus system 40; wherein, other electrical load is electrical load that is not related to the safety of multiple thin oil gas holders.

[0044] Since the diesel generator system 30 has a limited power generation capacity, in order to ensure the reliable operation of all oil pumps in an emergency, an additional power load switch 5 is installed. This switch can cut off the power supply to power loads that are not related to the safety of multiple thin oil gas holders, thereby reducing the power generation pressure of the diesel generator system.

[0045] The clustered thin oil gas holder emergency power supply system provided in this application embodiment can disconnect the power load that is not related to the safety of multiple thin oil gas holders from operation by switching on other power loads, thereby reducing the burden on the backup diesel generator system and ensuring the reliable operation of all oil pumps in an emergency.

[0046] Furthermore, in one embodiment, the other electrical load switch includes an undervoltage trip structure; the undervoltage trip structure is used to automatically trip when the other electrical load switch experiences a power outage.

[0047] Other electrical load switches can be selected with a loss-of-voltage tripping structure, so that when the switch is powered off, the switch will automatically trip and put the gas holder area into an "emergency state" condition, thus disconnecting electrical loads that are not related to the safety of multiple thin oil gas holders.

[0048] The clustered thin oil gas holder emergency power supply system provided in this application embodiment can disconnect the power load that is not related to the safety of multiple thin oil gas holders from operation by switching on other power loads, thereby reducing the burden on the backup diesel generator system and ensuring the reliable operation of all oil pumps in an emergency.

[0049] Figure 5 This is the third schematic diagram of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application. (Refer to...) Figure 5 The diesel generator system 30 includes a generator control cabinet 2 and a diesel generator 3. The generator control cabinet 2 is connected to the diesel generator 3, the PLC system 6, and the low-voltage bus system 40. The PLC system 6 is used to send a start signal to the generator control cabinet 2 when the ignition voltage is abnormal, so that the generator control cabinet 2 can start the diesel generator 3 to generate electricity. The PLC system 6 is also used to determine whether the diesel generator 3 is in operation when the ignition voltage is normal, and to send a stop signal to the generator control cabinet 2 when the diesel generator 3 is in operation, so that the generator control cabinet 2 can stop the diesel generator 3.

[0050] The clustered thin oil gas holder emergency power supply system provided in this application embodiment automatically controls the start and stop of the diesel generator through a PLC system, which can reduce unnecessary power consumption and enable the sealing oil to work continuously and uninterruptedly under fault conditions, thereby ensuring the safe and stable operation of the thin oil gas holder.

[0051] Furthermore, in one embodiment, the low-voltage bus system is a 380-volt bus (380V bus).

[0052] Figure 6 This is a schematic diagram of a specific example of the clustered thin oil gas holder emergency power supply system provided in the embodiments of this application. For example... Figure 6 As shown, the clustered thin oil gas holder emergency power supply system includes an incoming line switch 1, a generator control cabinet 2, a diesel generator 3, an incoming line voltage detection device 4, other electrical load switches 5, and a PLC system 6. The PLC system 6, connected to the generator control cabinet 2, can issue start and stop commands to the generator control cabinet 2, thereby affecting the operating status of the diesel generator 3.

[0053] The generator control cabinet 2 and diesel generator 3 can be installed in a dedicated generator room next to the low-voltage distribution room and connected to the low-voltage system via power cables. When the PLC system 6 determines that the incoming line voltage is abnormal, such as when the low-voltage system is de-energized, the incoming line switch 1 automatically trips, and other electrical load switches 5 automatically trip. The PLC system 6 sends a start command to the generator control cabinet 2, which then starts the diesel generator 3. The diesel generator 3 generates electrical energy and supplies it to the 380 bus, thus powering all oil stations on the bus. After the diesel generator 3 is running normally, the operators can restart the oil pump motors of each oil station, thereby ensuring the normal operation of the sealing oil system.

[0054] The clustered thin oil gas holder emergency power supply system provided in this application embodiment automatically cuts off electrical loads unrelated to the safety of the thin oil gas holder when the low-voltage system fails, and starts the diesel generator system as a backup power source to provide power to the oil pump station separately, ensuring that the oil pump motors of all thin oil gas holders in the cluster can still work normally, so as to realize the continuous and uninterrupted operation of the sealing oil under fault conditions, thereby ensuring the safe and stable operation of the thin oil gas holder.

[0055] In one embodiment, the number of thin oil gas holders is 3.

[0056] Furthermore, in one embodiment, a sealed oil station is provided in the bottom area of ​​each of the multiple thin oil gas holders.

[0057] Furthermore, in one embodiment, the number of sealed oil stations is multiple in the bottom area of ​​each thin oil gas holder.

[0058] Furthermore, in one embodiment, the number of sealed oil stations provided in the bottom area of ​​each thin oil gas holder is 2.

[0059] The clustered thin oil gas holder emergency power supply system provided in this application embodiment can prevent gas leakage and improve safety by setting up a sealed oil station at the bottom area of ​​each thin oil gas holder.

[0060] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0061] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0062] It should also be noted that the terms "first," "second," etc., used in the embodiments of this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, and the number of objects is not limited. For example, the first object can be one or more.

[0063] In the embodiments of this application, the term "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship.

[0064] In this application's embodiments, "determine B based on A" means that factor A must be considered when determining B. It is not limited to "B can be determined based solely on A," but should also include: "determine B based on A and C," "determine B based on A, C, and E," "determine C based on A, and further determine B based on C," etc. Additionally, it can include using A as a condition for determining B, for example, "when A meets the first condition, determine B using the first method"; another example, "when A meets the second condition, determine B," etc.; another example, "when A meets the third condition, determine B based on the first parameter," etc. Of course, it can also be a condition where A is a factor in determining B, for example, "when A meets the first condition, determine C using the first method, and further determine B based on C," etc.

[0065] In the embodiments of this application, the term "multiple" refers to two or more, and other quantifiers are similar.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A clustered thin oil gas holder emergency power supply system, characterized in that, include: Multiple thin oil gas holders, incoming line units, diesel generator systems, PLC systems, and low-voltage busbar systems; the incoming line units include incoming line voltage detection devices and incoming line switches; The plurality of thin oil gas holders and the diesel generator system are all connected to the low-voltage busbar system; the incoming line voltage detection device is connected to the incoming line switch; the incoming line switch is connected to the low-voltage busbar system; the PLC system is connected to the incoming line voltage detection device and the diesel generator system respectively; The incoming line voltage detection device is used to detect the firing voltage signal of the incoming line switch in real time, and after converting the firing voltage signal into an analog signal, send the analog signal to the PLC system. The PLC system is used to determine whether the ignition voltage is normal based on the analog signal, and to send a start signal to the diesel generator system if the ignition voltage is abnormal. The diesel generator system is used to supply power to the plurality of thin oil gas holders upon receiving the start signal.

2. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, The incoming line switch includes an undervoltage tripping structure; the undervoltage tripping structure is used to automatically trip when the incoming line switch experiences a power outage.

3. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, Also includes: Other electrical load switches; The other electrical load switch is connected to the low-voltage busbar system; wherein, the other electrical load is an electrical load that is not related to the safety of the plurality of thin oil gas holders.

4. The clustered thin oil gas holder emergency power supply system according to claim 3, characterized in that, The other electrical load switch includes an undervoltage tripping structure; the undervoltage tripping structure is used to automatically trip when the other electrical load switch experiences a power outage.

5. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, The diesel generator system includes a generator control cabinet and a diesel generator; the generator control cabinet is connected to the diesel generator, the PLC system and the low-voltage bus system respectively; The PLC system is used to send the start signal to the generator control cabinet when the top-fire voltage is abnormal, so that the generator control cabinet can start the diesel generator to generate electricity; The PLC system is also used to determine whether the diesel generator is in operation when the ignition voltage is normal, and to send a stop signal to the generator control cabinet when the diesel generator is in operation, so that the generator control cabinet stops the diesel generator.

6. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, The low-voltage busbar system is a 380-volt busbar.

7. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, The number of thin oil gas holders is 3.

8. The clustered thin oil gas holder emergency power supply system according to claim 1, characterized in that, Sealed oil stations are installed at the bottom of each of the multiple thin oil gas holders.

9. The clustered thin oil gas holder emergency power supply system according to claim 8, characterized in that, The bottom area of ​​each thin oil gas holder is equipped with multiple sealed oil stations.

10. The clustered thin oil gas holder emergency power supply system according to claim 9, characterized in that, The number of sealed oil stations is 2 in the bottom area of ​​each thin oil gas holder.

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