Liquid channeling monitoring and processing system

Abstract

The utility model provides a liquid channeling monitoring and processing system, which is characterized in that the downstream section of a discharge pipeline is connected with a monitoring pipe section attached with an optical signal sensor, and the downstream end of the monitoring pipe section is respectively connected with an external discharge pipe and a sewage collecting pipe through a three-way pipe joint; and the discharge pipe and the sewage collecting pipe are respectively provided with an on-off valve or a reversing valve is arranged at the three-way pipe joint. The color change of liquid in the pipeline is monitored through optical signals, control over the reversing valve or the opening and closing valve is matched, black liquor is prevented from being discharged when the liquid channeling phenomenon occurs, and the environment is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of rice paper manufacturing, in particular to a liquid channeling monitoring and processing system. Background Art

[0002] Xuan paper is a traditional handicraft. Its production process includes steaming, pulping, fishing, paper drying, paper cutting and other processes. Steaming mainly involves boiling the sandalwood bark and other raw materials used for Xuan paper processing in a liquid medicine to remove the lignin in the sandalwood bark. Specifically, the cooking wastewater after the sandalwood bark is cooked is black, which is called black liquor in the industry. The cooked black liquor is first collected in a storage tank, and then the black liquor is pumped into a heat exchanger to heat the black liquor. After the black liquor is heated, it boils to produce water vapor, which is condensed into distilled water and discharged. The remaining black liquor in the heat exchanger continues to increase in concentration during the continuous heating and boiling process. After the black liquor concentration reaches the set value, it is transported to the concentrated black liquor tank. The concentrated black liquor in the concentrated black liquor tank is processed into alkaline lignin through subsequent processing, which can be sold to downstream companies as raw materials. During the separation of black liquor from distilled water and the subsequent pipeline transportation process, liquid breakthrough may occur due to unexpected factors such as insufficient boiler pressure, blockage of the sewage treatment plant pipe wall, and pipeline leakage. Liquid breakthrough will cause some black liquor to be mixed in the condensed distilled water that was originally discharged directly. This part of black liquor will be discharged together with the distilled water, which will seriously pollute the environment. Utility Model Content

[0003] The utility model aims to provide a liquid breakthrough monitoring and processing system, which monitors the liquid breakthrough phenomenon and prevents the black liquor and the externally discharged condensed water from mixing and being directly discharged into the river.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a liquid leakage monitoring and processing system, the downstream section of the discharge pipeline is connected to a monitoring pipe section, an optical signal sensor is provided at the monitoring pipe section, the downstream end of the monitoring pipe section is respectively connected to an external discharge pipe and a sewage collection pipe through a three-way pipe joint, and the external discharge pipe and the sewage collection pipe are respectively provided with an opening and closing valve or a reversing valve is provided at the three-way pipe joint.

[0005] The utility model mainly arranges the optical signal sensor at the monitoring pipe section, monitors the color change of the liquid in the pipeline through the optical signal, and cooperates with the control of the reversing valve or the on-off valve to avoid the discharge of black liquid when liquid channeling occurs, effectively protects the environment, and maximizes the recovery of black liquid wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 Schematic diagram of the liquid breakthrough monitoring and treatment system. DETAILED DESCRIPTION

[0007] See also Figure 1In the liquid leakage monitoring and treatment system shown, the downstream section of the discharge pipeline 1 is connected to a monitoring pipe section 10, and an optical signal sensor 20 is provided at the monitoring pipe section 10. The downstream end of the monitoring pipe section 10 is connected to an external discharge pipe 2 and a sewage collection pipe 3 respectively through a three-way pipe joint 4. The external discharge pipe 2 and the sewage collection pipe 3 are respectively provided with an opening and closing valve 31 or a reversing valve 32 is provided at the three-way pipe joint 4.

[0008] In the above scheme, the water vapor generated by the boiling of black liquor is condensed into distilled water and then directly discharged into the natural environment through the discharge pipe 1. Under normal working conditions, the discharged distilled water will not pollute the environment. When liquid bleeding occurs, that is, some black liquor is mixed in the distilled water, since the black liquor is black and the distilled water itself is colorless and transparent, the distilled water after liquid bleeding is gray-black, and the more black liquor is bleeding, the darker the color of the distilled water mixed with the black liquor. When distilled water flows in the discharge pipeline 1 to the monitoring pipe section 10 of its downstream section, the optical signal sensor 20 installed at the monitoring pipe section 10 monitors the color of the liquid in the monitoring pipe section 10. If black liquor is mixed in the distilled water, the transmittance of the liquid will also change accordingly. After the optical signal sensor 20 detects its color change, it outputs a signal to prompt the operator to close the on-off valve 31 of the external discharge pipe 2 and open the on-off valve 31 of the sewage collection pipe 3, or to adjust the reversing valve 32 at the three-way pipe joint 4, so that the distilled water mixed with black liquor passes through the sewage collection pipe 3 and is concentrated in the storage tank and then transported to the sewage station for treatment, so as to avoid the discharge of black liquor to pollute the environment.

[0009] A more specific solution is that the optical signal sensor 20 includes an optical signal transmitter 21 and a receiver 22, and the light source emission bundle of the optical signal transmitter 21 is located on the flow path of the liquid in the monitoring pipe section 10. After the incident light of the optical signal transmitter 21 passes through the liquid flowing in the monitoring pipe section 10, the optical signal is received by the receiver 22. Preferably, the optical signal sensor 20 is electrically connected to an alarm. According to the intensity change of the optical signal collected by the receiver 22, when the transmittance of the liquid in the monitoring pipe section 10 is reduced to a set threshold, the alarm sounds to remind the operator to adjust the corresponding opening and closing valve 31 or the reversing valve 32. The alarm can use light source, sound or image information to remind the operator.

[0010] Preferably, the pipe wall of the monitoring pipe section 10 is made of transparent material, so that the operator can directly observe through the pipe wall with the naked eye whether there is liquid leakage in the monitoring pipe section 10.

[0011] As another more preferred embodiment, a pair of through holes are provided on the tube walls on both sides of the liquid flow direction in the monitoring tube section 10, and a light-transmitting mirror 40 is arranged on the through hole to seal with the through hole, and the optical signal transmitter 21 and the receiver 22 are respectively located on the outside of the opposite surface of the light-transmitting mirror 40. In the above scheme, the through holes on the tube walls on both sides of the monitoring tube section 10 are preferably designed to be symmetrically distributed to ensure that the light source emitted by the optical signal transmitter 21 is conveniently received by the receiver 22.

[0012] In order to facilitate maintenance, cleaning or replacement of the monitoring pipe section 10 , the monitoring pipe section 10 is detachably connected to the discharge pipeline 1 .

[0013] In order to facilitate the maintenance, cleaning or replacement of the light-transmitting mirror 40, the light-transmitting mirror 40 is detachably connected to the through holes on the two side walls of the monitoring pipe section 10. Since the emitted light of the optical signal transmitter 21 needs to pass through the light-transmitting mirror 40 before being received by the receiver 22, it is necessary to clean the dirt in time to ensure the transparency of the light-transmitting mirror 40, otherwise it will affect the accuracy of the recognition of the optical signal sensor 20.

[0014] As a preferred solution, the on-off valve 31 or the reversing valve 32 is a solenoid valve, and the optical signal sensor 20 and the on-off valve 31 or the optical signal sensor 20 and the reversing valve 32 are electrically connected to the processor respectively. After the optical signal sensor 20 detects the liquid leakage phenomenon, it sends a signal to the processor, and the processor controls and adjusts the on-off valve 31 or the reversing valve 32 after recognizing the signal, so as to realize the automatic processing of liquid leakage monitoring, improve the processing efficiency, reduce the labor cost, and more accurately ensure that the black liquor is not directly discharged into the environment.

Claims

1. A liquid breakthrough monitoring and processing system, characterized in that: The downstream section of the discharge pipeline (1) is connected to a monitoring pipe section (10), and an optical signal sensor (20) is provided at the monitoring pipe section (10). The downstream end of the monitoring pipe section (10) is respectively connected to an external discharge pipe (2) and a sewage collection pipe (3) via a three-way pipe joint (4), and an opening and closing valve (31) is respectively provided on the external discharge pipe (2) and the sewage collection pipe (3), or a reversing valve (32) is provided at the three-way pipe joint (4).

2. The liquid breakthrough monitoring and processing system according to claim 1, characterized in that: The optical signal sensor (20) comprises an optical signal transmitter (21) and a receiver (22), wherein the light source emission line beam of the optical signal transmitter (21) is located on the flow path of the liquid in the monitoring pipe section (10).

3. The liquid breakthrough monitoring and processing system according to claim 2, characterized in that: The pipe wall of the monitoring pipe section (10) is made of transparent material.

4. The liquid breakthrough monitoring and processing system according to claim 2, characterized in that: A pair of through holes are provided on the pipe wall on both sides of the liquid flow direction in the monitoring pipe section (10), and a light-transmitting mirror (40) is arranged on the through hole to seal with the through hole. The optical signal transmitter (21) and the receiver (22) are respectively located on the outside of the opposite surface of the light-transmitting mirror (40).

5. The liquid breakthrough monitoring and processing system according to claim 3 or 4, characterized in that: The monitoring pipe section (10) is detachably connected to the discharge pipeline (1).

6. The liquid breakthrough monitoring and processing system according to claim 4, characterized in that: The light-transmitting mirror (40) is detachably connected to the through holes on the pipe walls on both sides of the monitoring pipe section (10).

7. The liquid breakthrough monitoring and processing system according to claim 1, characterized in that: The optical signal sensor (20) is electrically connected to the alarm.

8. The liquid breakthrough monitoring and processing system according to claim 1 or 7, characterized in that: The on-off valve (31) or the reversing valve (32) is a solenoid valve, and the optical signal sensor (20) and the on-off valve (31) or the optical signal sensor (20) and the reversing valve (32) are electrically connected to the processor respectively.

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