Automatic locking method for locking nut of electrolytic cell oil press

Abstract

The application discloses an automatic locking method for electrolytic cell oil hydraulic machine locking nuts, and particularly relates to the technical field of locking nuts. The method detects the state of the electrolytic cell oil hydraulic machine locking nuts through a distributed control system, and generates corresponding signals according to the nut state. When the distributed control system receives a nut unlocking signal, the distributed control system automatically locks the nut that is not locked after the electrolytic cell is contracted. When the distributed control system receives a nut expansion signal, the distributed control system automatically releases the nut that is about to be locked by the top plate after the electrolytic cell is expanded. When the distributed control system receives a nut locking signal, the distributed control system stops the nut locking or releasing operation, and keeps the nut in a stationary state. The method realizes automatic locking and releasing of the electrolytic cell oil hydraulic machine locking nuts, improves the stability of the electrolytic cell oil hydraulic machine locking nuts, and improves the safety of the electrolytic cell.

Description

Technical Field

[0001] This invention relates to the field of locking nut technology, specifically to an automatic locking method for locking nuts in an electrolytic cell hydraulic press. Background Technology

[0002] Nuts are crucial components for tightly connecting mechanical equipment, widely used in industrial production and daily life. They are also a vital connecting part in electrolytic cell hydraulic presses. During electrolytic cell operation, temperature changes cause the nuts to expand or contract. Manually tightening the locking nuts on electrolytic cell hydraulic presses can easily lead to loosening due to cell contraction or the top plate tightening due to cell expansion, posing significant safety hazards. Loose locking nuts can cause hydrogen leakage and accumulation in the electrolytic cell, potentially leading to hydrogen fires and explosions, as well as fatal chlorine gas leaks, personnel poisoning, and environmental pollution. Furthermore, tightening nuts requires significant manpower, resulting in high labor costs. Furthermore, variations in operator skill levels can lead to inconsistent tightening quality, such as incomplete tightening, damaged threads, and missed areas, ultimately impacting production efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic locking method for the locking nut of an electrolytic cell hydraulic press, which is based on the current state of the prior art. The method uses a distributed control system to detect the state of the electrolytic cell nut and generate corresponding signals based on the nut state. Depending on the received signals, different automatic locking or loosening operations are performed on the locking nut of the electrolytic cell hydraulic press, thereby improving the stability of the locking nut of the electrolytic cell hydraulic press and improving the safety of the electrolytic cell.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: an automatic locking method for locking nuts of an electrolytic cell hydraulic press, characterized in that it includes:

[0005] S1: The state of the locking nut of the electrolytic cell hydraulic press is detected by the distributed control system, and a corresponding signal is generated based on the nut state;

[0006] S2: When the distributed control system receives a signal that the nut is not tightened, it automatically tightens the nut that was not tightened after the electrolytic cell shrinks.

[0007] S3: When the distributed control system receives the nut expansion signal, it automatically loosens the nut that was about to lock the top plate after the electrolytic cell expanded.

[0008] S4: When the distributed control system receives the nut tightening signal, it stops the nut tightening or loosening operation and keeps the nut stationary.

[0009] Furthermore, before the distributed control system is started, the local mode is switched to the remote mode via the motor actuator.

[0010] Furthermore, when the motor actuator is in the remote mode, the nut automatically maintains a set gap distance.

[0011] Furthermore, in step S3, when the oil pressure at the outlet of the hydraulic press where the nut that is about to lock the top plate is located is lower than the set pressure value, the distributed control system prevents the nut from automatically loosening and triggers a fault alarm in the distributed control system.

[0012] Furthermore, the fault alarm is sent to the staff via the distributed control system, and the staff confirms the condition of the nut on-site and performs fault recovery operations.

[0013] Furthermore, in step S3, when the nut expansion signal exceeds the set time, the nut is in a state where the top plate is about to be locked. The distributed control system sends an audible and visual alarm to the staff, and the distributed control system stops the automatic locking of the electrolytic cell hydraulic press nut.

[0014] Furthermore, in step S2, when the multiple locking signals are inconsistent or multiple unlocked signals occur simultaneously within a set time, the fault alarm sends an audible and visual alarm to the staff through the distributed control system, and the distributed control system stops the automatic locking of the electrolytic cell hydraulic press locking nut.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] (1) The automatic locking method for locking nuts of electrolytic cell hydraulic press described in this invention detects the status of locking nuts of electrolytic cell hydraulic press through a distributed control system. The nut status signal adopts multiple redundant detections, which facilitates the detection of each signal, has higher reliability and flexibility, and is easy to maintain;

[0017] (2) The distributed control system tightens or loosens the locking nut of the electrolytic cell hydraulic press according to the different signals received, increases the alarm mode for the locking nut of the electrolytic cell hydraulic press, improves the stability of the locking nut of the electrolytic cell hydraulic press, and thus improves the safety of the electrolytic cell.

[0018] (3) When a fault is manually operated on-site, the distributed control system will automatically exit operation to prevent accidental activation of the distributed control system and cause harm to construction personnel. Attached Figure Description

[0019] Figure 1 This is a flowchart of a method for automatically locking the locking nut of an electrolytic cell hydraulic press provided by the present invention. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments. Example 1

[0021] To improve the stability of the locking nut in the electrolytic cell hydraulic press and enhance the safety of the electrolytic cell, this method aims to resolve the issue of nut tightening or loosening under various circumstances, such as... Figure 1 As shown, the present invention provides an automatic locking method for the locking nut of an electrolytic cell hydraulic press, characterized in that it includes:

[0022] S1: The state of the locking nut of the electrolytic cell hydraulic press is detected by the distributed control system, and a corresponding signal is generated based on the nut state;

[0023] S2: When the distributed control system receives a signal that the nut is not tightened, it automatically tightens the nut that was not tightened after the electrolytic cell shrinks.

[0024] S3: When the distributed control system receives the nut expansion signal, it automatically loosens the nut that was about to lock the top plate after the electrolytic cell expanded.

[0025] S4: When the distributed control system receives the nut tightening signal, it stops the nut tightening or loosening operation and keeps the nut stationary.

[0026] The distributed control system (DCS) is used as the control system for the automatic locking method of the locking nuts of the electrolytic cell hydraulic press. The DCS detects the status of the locking nuts of the electrolytic cell hydraulic press and receives different feedback signals for nuts in different states. When the DCS receives an unlocked signal and continues to receive the unlocked signal for 5 seconds, the DCS automatically locks the unlocked nuts after the electrolytic cell shrinks. However, if two locking signals are inconsistent within 60 minutes or two unlocked signals occur simultaneously for 60 seconds, a fault alarm is triggered in the DCS. The staff is notified through an audible and visual alarm, and the automatic locking program in the DCS automatically exits. When the distributed control system receives an expansion signal, and at this time the oil pressure at the outlet of the hydraulic press and the oil pressure at the inlet of the single electrolytic cell are not lower than the set pressure, the distributed control system automatically loosens the nut on the top plate of the electrolytic cell after expansion. If an untightened signal is received for 5 seconds, the distributed control system automatically tightens the loosened nut. When the distributed control system receives a nut tightening signal, it stops the tightening or loosening action and maintains the nut in a tightened state. This operation is repeated. The distributed control system maintains the stability and safety of the locking nut of the electrolytic cell hydraulic press, increases the alarm mode for electrolytic cell nut failure, and improves the safety of the electrolytic cell.

[0027] Furthermore, before the distributed control system is started, the local mode is switched to the remote mode via the motor actuator;

[0028] Furthermore, when the motor actuator is in remote mode, the nut automatically maintains the set gap distance.

[0029] The distributed control system mainly involves remotely operating the electrolytic cell nut for automatic locking. Therefore, the electric actuator used on site must be switched from Local mode to Auto mode. Local mode is limited to manual operation on site and cannot automatically operate the electrolytic cell nut. Therefore, when operating in Local mode, the operator should manually exit Auto mode. Otherwise, a fault alarm will be triggered and the system will stop operating immediately to prevent the distributed control system in Auto mode from being triggered during manual operation on site, which could cause personnel danger. When the motor actuator is in Auto mode, the nut will automatically maintain the set gap distance.

[0030] Furthermore, in step S2, when the multiple locking signals are inconsistent or multiple unlocked signals occur simultaneously within a set time, the fault alarm sends an audible and visual alarm to the staff through the distributed control system, and the distributed control system stops the automatic locking of the electrolytic cell hydraulic press locking nut.

[0031] When the load on the electrolytic cell decreases, the nut may retract extremely slowly, causing the two locking signal probes to trigger the unlocked signal at different times. If the two locking signals are inconsistent and continue for 60 minutes, a fault alarm will be triggered in the distributed control system, which will notify the staff through an audible and visual alarm. At the same time, the automatic locking program in the distributed control system will automatically exit.

[0032] Furthermore, during system operation, if a fault occurs in the motor actuator, a fault alarm is triggered in the distributed control system. The alarm is triggered by sound and light to notify the staff. At the same time, the automatic locking program in the distributed control system automatically exits. This adds a fault alarm method for the locking nut of the electrolytic cell hydraulic press, improves the stability of the locking nut of the electrolytic cell hydraulic press, and thus improves the safety of the electrolytic cell.

[0033] In summary, the automatic locking method for the locking nut of the electrolytic cell hydraulic press of the present invention uses a distributed control system to detect the status of the locking nut of the electrolytic cell hydraulic press. Based on feedback from different signals, the method locks or loosens the locking nut of the electrolytic cell hydraulic press in different states. When a continuous locking signal is received, the nut remains stationary. Using a distributed control system, the control function can be distributed to various remote operations, which facilitates the detection of various signals and timely feedback, improves the reliability of system use, and makes maintenance simpler and more convenient. In addition, the distributed control system can lock or loosen the locking nut of the electrolytic cell hydraulic press according to different received signals, and adds a fault alarm mode for the locking nut of the electrolytic cell hydraulic press, thereby improving the stability of the locking nut of the electrolytic cell hydraulic press and improving the safety of the electrolytic cell.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the scope defined by the spirit of the invention.

Claims

1. A method for automatically locking the locking nut of an electrolytic cell hydraulic press, characterized in that, include: S1: The state of the locking nut of the electrolytic cell hydraulic press is detected by the distributed control system, and a corresponding signal is generated based on the nut state; S2: When the distributed control system receives a nut not tightened signal, it automatically tightens the nut that was not tightened after the electrolytic cell shrinks. When multiple tightening signals are inconsistent or multiple nut not tightened signals occur at the same time within a set time, the fault alarm sends an audible and visual alarm to the staff through the distributed control system. The distributed control system stops the automatic tightening of the nut by the electrolytic cell hydraulic press. S3: When the distributed control system receives the nut expansion signal, it automatically loosens the nut that will lock the top plate after the electrolytic cell expands. When the oil pressure at the outlet of the hydraulic press where the nut that will lock the top plate is located is lower than the set pressure value, the distributed control system prevents the nut from being automatically loosened and triggers a fault alarm in the distributed control system. S4: When the distributed control system receives the nut tightening signal, it stops the nut tightening or loosening operation and keeps the nut stationary.

2. The automatic locking method for the locking nut of an electrolytic cell hydraulic press according to claim 1, characterized in that, Before the distributed control system is started, the local mode is switched to the remote mode through the motor actuator.

3. The automatic locking method for the locking nut of an electrolytic cell hydraulic press according to claim 2, characterized in that, When the motor actuator is in the remote mode, the nut automatically maintains a set gap distance.

4. The automatic locking method for the locking nut of an electrolytic cell hydraulic press according to claim 1, characterized in that, The fault alarm is sent to the staff via the distributed control system, and the staff confirms the condition of the nut on-site and performs fault recovery operations.

5. The automatic locking method for the locking nut of an electrolytic cell hydraulic press according to claim 1, characterized in that, In step S3, when the nut expansion signal exceeds the set time, the nut is in a state where the top plate is about to be locked. The distributed control system sends an audible and visual alarm to the staff, and the distributed control system stops the automatic locking of the electrolytic cell hydraulic press nut.

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