Outer temperature and inner temperature control and self-diagnosis device of giant engineering tire vulcanizing machine

Abstract

The utility model relates to an external and internal temperature control and self-diagnosis device of an engineering tire huge tire vulcanizing machine, and belongs to the field of tire vulcanization. An outer temperature steam inlet adjusting valve and an inner temperature steam inlet self-control valve are arranged on the steamer and the capsule inlet end pipeline respectively, and an outer pressure transmitter, an outer pressure discharge self-control valve, an outer temperature sensor and an outer temperature accumulated water and liquid level measuring device are arranged on the steamer outlet end pipeline. An outer temperature high liquid level detection switch and an outer temperature low liquid level detection switch are arranged in the outer temperature accumulated water and liquid level measuring device, an outer temperature condensate drainage self-control valve is installed at the outlet end of the outer temperature accumulated water and liquid level measuring device, and an inner pressure transmitter, an inner temperature sensor and an inner temperature accumulated water and liquid level measuring device are arranged on a capsule outlet end pipeline. An inner temperature high liquid level detection switch and an inner temperature low liquid level detection switch are arranged in the inner temperature accumulated water and liquid level measuring device, an inner temperature condensate drainage self-control valve is installed at the outlet end of the inner temperature accumulated water and liquid level measuring device, all the parts except the pipeline, the steamer and the capsule are connected into a PLC, and the PLC is in computer communication with a human-computer interface.

Description

Technical Field

[0001] This utility model relates to the field of tire vulcanization technology, specifically to an external and internal temperature control and self-diagnosis device for a vulcanizing machine for engineering tires and giant tires. Background Technology

[0002] As is well known, engineering tires and giant tires currently employ steam vulcanizing machines and hot water vulcanization processes. This means that steam is used as the external heating medium in the steamer during the vulcanization process, while steam and hot water are used as the internal temperature and pressure medium inside the tire bladder. During the external heating and internal steam stages, if steam traps are used to discharge condensate, there is a problem with accurately identifying abnormalities in the daily management of these traps. Therefore, many tire manufacturers have replaced steam traps with level monitoring devices. However, regardless of the measurement method used, level monitoring devices still have problems with timely detection of level measurement anomalies and internal leakage in the condensate drain valve. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides an external and internal temperature control and self-diagnosis device for engineering tire and giant tire vulcanizing machine, which solves the problem that abnormal liquid level measurement and internal leakage of condensate discharge valve are difficult to detect in time.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an external and internal temperature control and self-diagnosis device for a vulcanizing machine for engineering tires and giant tires, comprising a steamer and a capsule, characterized in that an external temperature steam inlet regulating valve and an internal temperature steam inlet self-control valve are respectively installed on the inlet pipes of the steamer and the capsule; a first outlet pipe and a second outlet pipe are connected in parallel on the outlet pipe of the steamer; an external pressure transmitter and an external pressure discharge self-control valve are sequentially installed on the first outlet pipe; and an external temperature sensor and an external temperature water accumulation and liquid level measuring device are sequentially installed on the second outlet pipe. The device is equipped with an external temperature high liquid level detection switch and an external temperature low liquid level detection switch. An external temperature condensate drain valve is installed at the outlet end of the external temperature water accumulation and liquid level measuring device. An internal pressure transmitter, an internal temperature sensor, and an internal temperature water accumulation and liquid level measuring device are installed sequentially on the outlet pipeline of the capsule. An internal temperature high liquid level detection switch and an internal temperature low liquid level detection switch are installed inside the internal temperature water accumulation and liquid level measuring device. An internal temperature condensate drain valve is installed at the outlet end of the internal temperature water accumulation and liquid level measuring device. All the aforementioned components except for the pipeline, the steamer, and the capsule are connected to the PLC, and the PLC communicates with the human-machine interface computer.

[0005] The beneficial effects of this utility model are that it can automatically diagnose abnormalities in liquid level monitoring and control devices or external temperature regulating valves, and can automatically provide auxiliary measures for venting steam or condensation based on the diagnostic results, thereby ensuring the quality of tire vulcanization and avoiding steam waste. Attached Figure Description

[0006] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0007] Figure 1 This is a schematic diagram of the structure of the present invention.

[0008] In the diagram: 1. Steamer; 2. Capsule; 3. External temperature steam inlet regulating valve; 4. Internal temperature steam inlet automatic control valve; 5. Internal temperature sensor; 6. External temperature sensor; 7. Internal temperature water accumulation and liquid level measuring device; 71. Internal temperature high liquid level detection switch; 72. Internal temperature low liquid level detection switch; 8. External temperature water accumulation and liquid level measuring device; 81. External temperature high liquid level detection switch; 82. External temperature low liquid level detection switch; 9. Internal temperature condensate drainage automatic control valve; 10. External temperature condensate drainage automatic control valve; 11. External pressure discharge automatic control valve; 12. Internal pressure transmitter; 13. External pressure transmitter. Detailed Implementation

[0009] In the figure, this utility model includes a steamer 1 and a capsule 2. An external temperature steam inlet regulating valve 3 and an internal temperature steam inlet automatic control valve 4 are respectively installed on the inlet pipes of the steamer 1 and the capsule 2. A first outlet pipe and a second outlet pipe are connected in parallel on the outlet pipe of the steamer 1. An external pressure transmitter 13 and an external pressure discharge automatic control valve 11 are sequentially installed on the first outlet pipe. An external temperature sensor 6 and an external temperature water accumulation and liquid level measuring device 8 are sequentially installed on the second outlet pipe. The external temperature water accumulation and liquid level measuring device 8 includes an external temperature high liquid level detection switch 81 and an external temperature low liquid level detection switch. 82. An external temperature condensate drain valve 10 is installed at the outlet end of the external temperature water accumulation and liquid level measuring device 8. An internal pressure transmitter 12, an internal temperature sensor 5, and an internal temperature condensate drain valve 7 are installed sequentially on the outlet pipeline of capsule 2. An internal temperature high liquid level detection switch 71 and an internal temperature low liquid level detection switch 72 are installed inside the internal temperature condensate drain valve 7. An internal temperature condensate drain valve 9 is installed at the outlet end of the internal temperature condensate drain valve 7. All the aforementioned components except the pipeline, steamer 1, and capsule 2 are connected to the PLC. The PLC communicates with the human-machine interface computer. The external temperature system controls the steamer 1, and the internal temperature system controls the capsule 2. For the external temperature system, during each preheating and vulcanization process, the external temperature sensor 6 measures the external temperature data, which is then transmitted to the PLC. The PLC compares the data with the external temperature setpoint and performs PID calculations. Based on the PID calculation results, it controls the opening of the external temperature steam inlet regulating valve 3 to automatically adjust the amount of steam entering the steamer 1. The steam condensate generated during this process flows automatically to the external temperature water accumulation and liquid level measuring device 8. The external temperature high liquid level detection switch 81 and external temperature low liquid level detection switch 82 are used to detect the high and low liquid levels. After receiving the liquid level signal, the PLC controls the external temperature condensate discharge automatic control valve 10 to automatically discharge the condensate in a high-level open and low-level closed mode (i.e., liquid level measurement and control mode). The frequency and duration of each discharge are automatically recorded and statistically analyzed. The external pressure is detected by the external pressure transmitter 13. After each preheating or vulcanization cycle, the steam in the steamer 1 is vented using the external pressure discharge valve 11. During this process, the external temperature condensate discharge valve 10 is closed. The external temperature water accumulation and liquid level measuring device 8 will quickly fill with steam condensate. The system automatically determines whether the external temperature high liquid level detection switch 81 and the external temperature low liquid level detection switch 82 are functioning correctly. The switch that fails to detect a liquid level signal is considered abnormal. If an abnormality is detected, the human-machine interface computer will provide voice and animation prompts to remind maintenance personnel to handle the issue promptly. If the abnormality is not handled in time and tire production needs to continue, the PLC will automatically switch to a timed discharge mode in subsequent production processes. This mode automatically records and calculates the fastest discharge frequency and the longest discharge duration to automatically discharge the steam condensate.

[0010] For the internal temperature system, in each vulcanization process, steam is first introduced into capsule 2 via internal temperature steam inlet control valve 4 and maintained for a certain period of time according to the process settings (i.e., the steam stage). During this period, the condensate generated flows automatically to the internal temperature water accumulation and liquid level measuring device 7. The internal temperature high liquid level detection switch 71 and internal temperature low liquid level detection switch 72 are used to detect the high and low liquid levels. After receiving the liquid level signal, the PLC controls the internal temperature condensate discharge control valve 9 to automatically discharge in a high liquid level open and low liquid level closed mode (i.e., liquid level monitoring and control mode), and automatically records and summarizes the frequency of discharge and the duration of each discharge. When the steam stage ends, the internal temperature steam inlet control valve 4 and the internal temperature condensate outlet control valve 9 are closed. Simultaneously, other control valves are used to fill the capsule 2 with hot water, and then hot water circulation (i.e., the hot water stage) begins. From the start of hot water filling until the end of vulcanization, the internal temperature high liquid level detection switch 71 and the internal temperature low liquid level detection switch 72 are automatically used to determine if they are functioning correctly. The switch that fails to detect a liquid level signal is considered abnormal. If an abnormality is detected, the human-machine interface computer will provide voice and animation prompts to remind maintenance personnel to handle it promptly. If the abnormality is not handled promptly and tire production needs to continue, the PLC will automatically switch the steam condensate discharge to a timed discharge mode during the subsequent steam stage of production. This mode automatically records and calculates the fastest discharge frequency and the longest discharge duration using a liquid level monitoring and control mode to automatically discharge the steam condensate. Both the steam and hot water stages use an internal temperature sensor 5 to measure the internal temperature and an internal pressure transmitter 12 to detect the internal pressure.

[0011] Regardless of whether the condensate generated by the steam in the external or internal temperature system is controlled by a level monitoring mode or a timed discharge mode, discharge is supplemented by a comprehensive judgment based on temperature and pressure. Once the temperature is detected to have dropped to the low warning value set by the HMI computer, and the pressure is not lower than the saturated steam pressure corresponding to the low temperature warning value, the PLC automatically opens the external temperature condensate discharge valve 10 or the internal temperature condensate discharge valve 9 to discharge the condensate, and the HMI computer issues a warning for abnormal level monitoring. If the temperature is lower than the low warning value set by the HMI computer, and the pressure is lower than the saturated steam pressure corresponding to the low temperature warning value, the PLC forcibly closes the external temperature condensate discharge valve 10 or the internal temperature condensate discharge valve 9. Valve 9 stops condensate discharge and warns of abnormalities in the steam source parameters or steam inlet device (external temperature steam inlet regulating valve 3 or internal temperature steam inlet automatic control valve 4). If the external temperature is higher than the high alarm value set by the human-machine interface computer and the pressure is higher than the saturated steam pressure corresponding to the high alarm value, the human-machine interface computer warns of abnormalities in the external temperature steam inlet regulating valve 3, and the PLC automatically opens the external temperature condensate discharge automatic control valve 10 to discharge steam. If the pressure cannot be reduced quickly, the external pressure discharge automatic control valve 11 is opened to discharge steam so that the external temperature can return to normal.

[0012] The steam entering the steamer 1 from the external temperature system, and the steam entering the capsule 2 from the internal temperature system, are saturated steam that has been automatically pressure-stabilized and superheat-controlled by the power station. Their temperature and pressure are related. In the external temperature system, reducing the steam pressure in the steamer 1 can reduce the external temperature. In the internal temperature system, as long as the normal discharge of steam condensate is controlled, the internal temperature can be kept stable.

Claims

1. A device for external and internal temperature control and self-diagnosis of a vulcanizing machine for engineering tires and giant tires, comprising a steamer and a capsule, characterized in that, in An external temperature steam inlet regulating valve and an internal temperature steam inlet automatic control valve are respectively installed on the inlet pipes of the steamer and the capsule. A first outlet pipe and a second outlet pipe are connected in parallel on the outlet pipe of the steamer. An external pressure transmitter and an external pressure discharge automatic control valve are installed in sequence on the first outlet pipe. An external temperature sensor, an external temperature water accumulation and liquid level measuring device are installed in sequence on the second outlet pipe. The external temperature water accumulation and liquid level measuring device is equipped with an external temperature high liquid level detection switch and an external temperature low liquid level detection switch. An external temperature condensate discharge automatic control valve is installed at the outlet end of the external temperature water accumulation and liquid level measuring device. An internal pressure transmitter, an internal temperature sensor, and an internal temperature water accumulation and liquid level measuring device are installed in sequence on the outlet pipe of the capsule. An internal temperature high liquid level detection switch and an internal temperature low liquid level detection switch are installed at the internal temperature water accumulation and liquid level measuring device. An internal temperature condensate discharge automatic control valve is installed at the outlet end of the internal temperature water accumulation and liquid level measuring device. All the aforementioned components except the pipes, steamer and capsule are connected to a PLC, and the PLC communicates with a human-machine interface computer.

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