Device capable of replacing thermocouple on line in carbon black production

Abstract

The utility model belongs to the technical field of chemical equipment, and particularly relates to a device capable of replacing a thermocouple on line in carbon black production, which comprises a protective pipe jacket I, a stop valve I, a pressure relief pipe I, a DN50 ball valve I and a protective air pipe I. The protective pipe jacket I is communicated with the inside of a reaction furnace and is used for fixing a remote thermocouple. One end of the teletransmission thermocouple penetrates through the protective tube jacket I and extends into the reaction furnace, and the other end of the teletransmission thermocouple is fixed to the end of the protective tube jacket I through a thermocouple mounting screw thread. The stop valve I and the DN50 ball valve I are sequentially distributed on the protective tube jacket I. The pressure relief pipe I is communicated with the protective tube jacket I and located between the stop valve I and the DN50 ball valve I. The pressure relief pipe II is communicated with the protective tube jacket I and located between the DN50 ball valve I and the DN50 ball valve II. A pressure relief valve I is arranged on the pressure relief pipe I, the protective air pipe I is communicated with the protective pipe jacket I, the protective air pipe I is positioned between the DN50 ball valve I and the reaction furnace, and a DN25 protective air valve I is arranged on the protective air pipe I. According to the device, the thermocouple can be replaced without shutdown in the production process.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and in particular relates to an online replacement device for a remote thermocouple after it is damaged in a carbon black production process. Background Art

[0002] During the carbon black production process, the normal control temperature of the reactor is 950-1150℃, which belongs to the high temperature area. Usually, remote thermocouples are used to remotely monitor the temperature data of the reactor, so as to monitor the carbon black production process parameters in real time. Remote thermocouples can directly measure the temperature and convert the temperature signal into a thermoelectric potential signal, which is converted into the temperature of the measured medium through electrical instruments (secondary instruments). During the carbon black production process, if the remote thermocouple is damaged, it cannot be replaced in time and can only be replaced after the shutdown. At this time, if production is insisted, the actual temperature data of the reactor cannot be obtained, and it is difficult to adjust the process parameters, which will cause instability in the production process and carbon black product quality, and increase the risk of equipment damage; if the thermocouple is replaced after the shutdown, it will reduce production efficiency and increase production costs. Summary of the invention

[0003] The utility model provides a device that can replace remote thermocouples without stopping the machine, effectively solving the problem that the remote thermocouples cannot be replaced during the production process, and reducing the risk of instability in the production process and carbon black product quality and equipment damage caused by blindly adjusting process parameters due to damage to the remote thermocouples and inability to obtain accurate temperature data.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows.

[0005] A device for online replacement of thermocouples in carbon black production comprises a protective tube jacket I, a stop valve I, a pressure relief pipe I, a DN50 ball valve I and a protective air duct I. The protective tube jacket I is connected to the interior of a reactor and is used to fix a remote thermocouple. One end of the remote thermocouple passes through the protective tube jacket I and extends into the interior of the reactor, and the other end is fixed to the end of the protective tube jacket I through a thermocouple mounting thread. The stop valve I and the DN50 ball valve I are sequentially distributed on the protective tube jacket I. The pressure relief pipe I is connected to the protective tube jacket I, and the pressure relief pipe I is located between the stop valve I and the DN50 ball valve I. The pressure relief valve I is provided on the pressure relief pipe I. The protective air duct I is connected to the protective tube jacket I, and the protective air duct I is located between the DN50 ball valve I and the reactor. The protective air duct I is provided with a DN25 protective air valve I.

[0006] Furthermore, the online replaceable thermocouple replacement device is also provided with a protective pipe jacket II, a stop valve II, a pressure relief pipe II, a DN50 ball valve II, and a protective air duct II. The protective pipe jacket II is arranged side by side with the protective pipe jacket I. The protective pipe jacket II is also connected to the inside of the reactor and is used to fix the remote thermocouple. The stop valve II and the DN50 ball valve II are sequentially arranged on the protective pipe jacket II. The pressure relief pipe II is connected to the protective pipe jacket II, and the pressure relief pipe II is located between the stop valve II and the DN50 ball valve II. The pressure relief valve II is provided on the pressure relief pipe II. The protective air duct II is connected to the protective pipe jacket II, and the protective air duct II is located between the DN50 ball valve II and the reactor. The protective air duct II is provided with a DN25 protective air valve II. The protective air duct I and the protective air duct II are respectively connected to the external air delivery device for delivering protective air.

[0007] The thermocouple replacement device of the utility model has the following advantages:

[0008] (1) It is possible to replace the remote thermocouple without stopping the production process, reducing the risk of not being able to obtain accurate temperature data before replacement, blindly adjusting process parameters, and causing instability in production process and carbon black product quality and equipment damage.

[0009] (2) The device realizes online replacement of thermocouples while preventing material leakage and ensuring personal safety.

[0010] (3) The device has a simple structure and is easy to operate. It can be extended to other high-temperature areas as an online replacement device for temperature, pressure, and flow instruments, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the device for online replacement of thermocouples in carbon black production in Example 1.

[0012] Figure 2 This is a schematic diagram of the structure of the device for online replacement of thermocouples in carbon black production in Example 2.

[0013] In the figure: 1-remote transmission thermocouple, 2-thermocouple mounting thread, 3-protective pipe jacket Ⅰ, 4-stop valve Ⅰ, 5-pressure relief pipe Ⅰ, 6-pressure relief valve Ⅰ, 7-DN50 ball valve Ⅰ, 8-DN25 protective air valve Ⅰ, 9-protective air duct Ⅰ, 10-protective pipe jacket Ⅱ, 11-stop valve Ⅱ, 12-pressure relief valve Ⅱ, 13-pressure relief pipe Ⅱ, 14-DN50 ball valve Ⅱ, 15-DN25 protective air valve Ⅱ, 16-protective air duct Ⅱ, 17-reactor. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and therefore, the utility model is not limited to the limitations of the specific embodiments disclosed below.

[0015] Example 1

[0016] like Figure 1 The device for online replacement of thermocouples for carbon black production shown in the figure comprises a protective tube jacket Ⅰ3, a stop valve Ⅰ4, a pressure relief pipe Ⅰ5, a DN50 ball valve Ⅰ7 and a protective air duct Ⅰ9. The protective tube jacket Ⅰ3 is connected to the interior of a reaction furnace 17 and is used to fix a remote thermocouple 1. One end of the remote thermocouple 1 passes through the protective tube jacket Ⅰ3 and extends into the interior of the reaction furnace 17, and the other end is fixed to the end of the protective tube jacket Ⅰ3 through a thermocouple mounting thread 2. The stop valve Ⅰ4 and the DN50 ball valve Ⅰ7 are sequentially distributed on the protective tube jacket Ⅰ3, the pressure relief pipe Ⅰ5 is connected to the protective tube jacket Ⅰ3, and the pressure relief pipe Ⅰ5 is located between the stop valve Ⅰ4 and the DN50 ball valve Ⅰ7, a pressure relief valve Ⅰ6 is provided on the pressure relief pipe Ⅰ5, the protective air duct Ⅰ9 is connected to the protective tube jacket Ⅰ3, and the protective air duct Ⅰ9 is located between the DN50 ball valve Ⅰ7 and the reaction furnace 17, and a DN25 protective air valve Ⅰ8 is provided on the protective air duct Ⅰ9.

[0017] The protective air duct I9 is ​​connected to an external air delivery device for delivering protective air. The pressure relief pipe I5 can be connected to an external waste collection and processing chamber to filter or burn the gas discharged from the protective pipe jacket I3 during pressure relief to prevent the discharged gas from polluting the environment.

[0018] When the remote thermocouple 1 is found to be damaged during the production process, first pass the protective air through the protective air duct Ⅰ9, open the DN25 protective air valve Ⅰ8, and open the pressure relief valve Ⅰ6, loosen the thermocouple mounting thread 2 thereon, withdraw the damaged remote thermocouple 1 to between the stop valve Ⅰ4 and the DN50 ball valve Ⅰ7 in the protective pipe jacket Ⅰ3, close the DN50 ball valve Ⅰ7, and then withdraw the damaged remote thermocouple 1 to the outside of the stop valve Ⅰ4, close the stop valve Ⅰ4 and the pressure relief valve Ⅰ6, withdraw the damaged remote thermocouple 1, and replace it with a new remote thermocouple. When replacing a new remote thermocouple, first open the stop valve Ⅰ4 and the pressure relief valve Ⅰ6, put the new remote thermocouple into the protective air duct Ⅰ9, then open the DN25 protective air valve Ⅰ8, and then close the pressure relief valve Ⅰ6, open the DN50 ball valve Ⅰ7, extend the new remote thermocouple into the reactor 17, tighten the thermocouple mounting thread 2 on it, fix the new remote thermocouple on the protective pipe jacket Ⅰ3, then close the DN25 protective air valve Ⅰ8, and finally withdraw the protective air.

[0019] Example 2

[0020] like Figure 2 As shown, the device for online replacement of thermocouples for carbon black production in this embodiment is provided with two sets of replacement components, one of which is used as a spare replacement component. That is, on the basis of Example 1, the device for online replacement of thermocouples in this embodiment is further provided with a protective pipe jacket Ⅱ10, a stop valve Ⅱ11, a pressure relief pipe Ⅱ13, a DN50 ball valve Ⅱ14, and a protective air duct Ⅱ16. The protective pipe jacket Ⅱ10 is arranged side by side with the protective pipe jacket Ⅰ3, and the protective pipe jacket Ⅱ10 is also connected to the inside of the reaction furnace 17 for fixing the remote thermocouple 1. The stop valve Ⅱ11 and the DN50 ball valve Ⅱ14 are sequentially distributed on the protective pipe jacket Ⅱ10, the pressure relief pipe Ⅱ13 is connected to the protective pipe jacket Ⅱ10, and the pressure relief pipe Ⅱ13 is located between the stop valve Ⅱ11 and the DN50 ball valve Ⅱ14, and a pressure relief valve Ⅱ12 is provided on the pressure relief pipe Ⅱ13. The protective air duct Ⅱ16 is connected to the protective pipe jacket Ⅱ10, and the protective air duct Ⅱ16 is located between the DN50 ball valve Ⅱ14 and the reaction furnace 17, and a DN25 protective air valve Ⅱ15 is provided on the protective air duct Ⅱ16.

[0021] The protective air duct I9 and the protective air duct II16 are respectively connected to an external air delivery device for delivering protective air. The pressure relief pipe I5 and the pressure relief pipe II13 can be connected to an external waste collection and processing chamber to filter or burn the gas discharged from the protective pipe jacket I3 and the protective pipe jacket II10 during pressure relief to prevent the discharged gas from polluting the environment.

[0022] When the remote thermocouple 1 is found to be damaged during the production process, if the damaged remote thermocouple 1 is installed in the protective tube jacket Ⅰ3, first pass the protective air through the protective air duct Ⅰ9 and the protective air duct Ⅱ16, open the DN25 protective air valve Ⅰ8 and the DN25 protective air valve Ⅱ15, then open the pressure relief valve Ⅱ12 and the stop valve Ⅱ11, put a new remote thermocouple into the protective tube jacket Ⅱ10, then close the pressure relief valve Ⅱ12, open the DN50 ball valve Ⅱ14, extend the new remote thermocouple into the reactor 17, and tighten the thermocouple installation thread 2 on it. Fix the new remote thermocouple and then close the DN25 protective air valve Ⅱ15; then loosen the thermocouple mounting thread 2 on the damaged remote thermocouple 1 and open the pressure relief valve Ⅰ6, withdraw the damaged remote thermocouple 1 to between the stop valve Ⅰ4 and the DN50 ball valve Ⅰ7 in the protective pipe jacket Ⅰ3, close the DN50 ball valve Ⅰ7, and then withdraw the damaged remote thermocouple 1 to the outside of the stop valve Ⅰ4, close the stop valve Ⅰ4 and the pressure relief valve Ⅰ6, and withdraw the damaged remote thermocouple 1; then close the DN25 protective air valve Ⅰ8, and finally withdraw the protective air.

[0023] By using the two replacement devices and operation methods in Example 1 and Example 2, the remote thermocouple 1 can be replaced without stopping the production process, realizing online replacement of thermocouples under the premise of preventing material leakage and ensuring personal safety; reducing the inability to obtain accurate temperature data and blindly adjusting process parameters, resulting in unstable production processes and damage to equipment. The device has a simple structure and is easy to operate, and can be extended to other high-temperature areas as an online replacement device for temperature, pressure, and flow meters.

Claims

1. A device for online replacement of thermocouples in carbon black production, characterized in that: It comprises a protective tube jacket I, a stop valve I, a pressure relief pipe I, a DN50 ball valve I and a protective air duct I. The protective tube jacket I is connected to the inside of the reactor and is used to fix a remote thermocouple. One end of the remote thermocouple passes through the protective tube jacket I and extends into the reactor, and the other end is fixed to the end of the protective tube jacket I through a thermocouple mounting thread. The stop valve I and the DN50 ball valve I are sequentially distributed on the protective tube jacket I. The pressure relief pipe I is connected to the protective tube jacket I, and the pressure relief pipe I is located between the stop valve I and the DN50 ball valve I. The pressure relief valve I is provided on the pressure relief pipe I. The protective air duct I is connected to the protective tube jacket I, and the protective air duct I is located between the DN50 ball valve I and the reactor. The protective air duct I is provided with a DN25 protective air valve I.

2. The device for online replacement of thermocouples for carbon black production according to claim 1, characterized in that: A protective pipe jacket II, a stop valve II, a pressure relief pipe II, a DN50 ball valve II and a protective air duct II are also provided. The protective pipe jacket II is arranged side by side with the protective pipe jacket I. The protective pipe jacket II is also connected to the inside of the reactor and is used to fix the remote thermocouple. The stop valve II and the DN50 ball valve II are sequentially arranged on the protective pipe jacket II. The pressure relief pipe II is connected to the protective pipe jacket II, and the pressure relief pipe II is located between the stop valve II and the DN50 ball valve II. A pressure relief valve II is provided on the pressure relief pipe II. The protective air duct II is connected to the protective pipe jacket II, and the protective air duct II is located between the DN50 ball valve II and the reactor. A DN25 protective air valve II is provided on the protective air duct II.

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