Online leakage detection device for chromic anhydride storage

Abstract

An online leakage detection device for chromic anhydride storage comprises a ton barrel, a feeding port and a feeding valve are arranged at the top of the ton barrel, a discharging port and a discharging valve are arranged at the bottom of the ton barrel, the online leakage detection device further comprises a detection device, the detection device comprises an air inlet pump, an air inlet valve, an air pipe, an air outlet valve and an ultrasonic generator, and the air inlet valve and the air outlet valve are arranged on the ton barrel. Drying gas circulation is carried out in the ton barrel, and the ultrasonic generators are arranged at the valves respectively; the system further comprises a detection display device, the detection display device comprises a signal receiver and an external display device, and the signal receiver is arranged in the external display device. Gas is injected into the ton barrel, the gas leakage condition of each valve is checked through the ultrasonic generator, and remote detection or monitoring of valve leakage is achieved; it is ensured that chromic anhydride in the ton barrel does not absorb moisture; by arranging the dust collection mechanism, the generated chromic anhydride dust is subjected to absorption treatment; circulating water is injected into the cavity of the ton barrel through the water pump, and the cooling effect is achieved.

Description

Technical Field

[0001] The utility model specifically relates to an online leakage detection device for chromic anhydride storage. Background Art

[0002] Chromic anhydride is a hazardous chemical that is harmful to human health and the environment. It can cause acute poisoning if inhaled. Chromic anhydride is often packaged in ordinary chemical iron barrels. These barrels are defined as chromium-containing hazardous wastes because of residual chromic anhydride after use. They have no economic value and are difficult to handle. Abandoned chromium-containing iron barrels will cause serious pollution to the environment.

[0003] Before and after chromic anhydride is loaded into barrels, it is necessary to check whether the valve is leaking. Leaked chromic anhydride will cause acute poisoning and cause cancer after being inhaled by the human body. The chromic anhydride in the barrel must also be ensured to be moisture-proof. In the process of loading and unloading chromic anhydride, chromic anhydride dust will be generated. If not properly handled, it will be harmful to human health and the environment. Chromic anhydride is prone to flammability and explosion in a high temperature environment. Therefore, after the chromic anhydride is loaded into barrels, it is necessary to pay attention to the temperature of the barrel and cool it down. Utility Model Content

[0004] In view of the above, the utility model provides an online leakage detection device for chromic anhydride storage to solve the problems raised in the above background technology.

[0005] The utility model solves the technical problem by adopting the following technical solution: providing an online leakage detection device for chromic anhydride storage, comprising a ton barrel, wherein a feed port is arranged at the top of the ton barrel, a feed valve is installed at the feed port, a discharge port is arranged at the bottom of the ton barrel, a discharge valve is installed at the discharge port, and also comprising a detection device for online leakage detection of the ton barrel, wherein the detection device comprises an air intake pump, an air intake valve, an air pipe, an air outlet valve, and a plurality of ultrasonic generators, wherein the air intake valve and the air outlet valve are arranged on the ton barrel, the air intake pump is installed on the ton barrel, and the air intake valve and the air outlet valve are respectively connected through the air pipe, so as to circulate dry gas inside the ton barrel, and a plurality of ultrasonic generators are respectively arranged at the feed valve, the discharge valve, the air intake valve and the air outlet valve; further comprising The invention comprises a detection and display device for wirelessly receiving the output signal of an ultrasonic generator, the detection and display device comprises a signal receiver which can be wirelessly connected to the probe of the ultrasonic generator, and an external display device with sound wave spectrum / amplitude display and analysis software, the signal receiver is arranged in the external display device, the signal input end of the signal receiver is wirelessly connected to the analog output signal of the ultrasonic generator, the signal output end of the signal receiver is connected to the digital signal input end of the external display device, the analog signal output by the ultrasonic generator is converted into a digital signal by the signal receiver, and transmitted to the external display device through a data line; when in use, the valve leakage of the ton barrel is detected by the change of the amplitude of the analog output signal of the ultrasonic generator and the noise signal output by the external display device.

[0006] Furthermore, it also includes a dust suction mechanism for absorbing chromic anhydride dust, the dust suction mechanism includes a negative pressure fan, a dust suction pipe, and a dust suction pipe cover, the dust suction pipe cover covers the feed port and the discharge port, one end of the dust suction pipe is connected to the outlet of the dust suction pipe cover, and the other end of the dust suction pipe is connected to the air inlet of the negative pressure fan.

[0007] Furthermore, the air outlet of the negative pressure fan is connected to a dust exhaust hose, and the lower end of the dust exhaust hose is connected to an absorption mechanism for absorbing chromic anhydride dust.

[0008] Furthermore, the absorption mechanism includes an absorption box, which is divided into a chromic anhydride dust absorption water tank and a cooling water tank for cooling the ton barrel.

[0009] Furthermore, the lower end of the dust exhaust hose is connected to the chromic anhydride dust absorption water tank.

[0010] Furthermore, the outer wall of the ton barrel is provided with a cavity for water circulation, and the cavity is provided with a water inlet and a water outlet.

[0011] Furthermore, a water pump is arranged in the cooling water tank, and a water pipe is connected to the water pump, and the water pipe is respectively connected to the water inlet and the water outlet.

[0012] Furthermore, it also includes a temperature sensor for detecting the temperature of the ton barrel, the temperature sensor is arranged on the ton barrel, and the temperature sensor is connected to the input end of the water pump.

[0013] Furthermore, the material of the ultrasonic generator is nickel-based alloy steel or chromium-nickel alloy steel.

[0014] The utility model discloses an online leakage detection device for chromic anhydride storage. By setting a detection device and a detection display device, gas is injected into a ton barrel. Then, an ultrasonic generator is used to respectively check the gas leakage at a feed valve, a discharge valve, an air inlet valve and an air outlet valve. An external display device is used to receive and display the ultrasonic noise signal output by the ultrasonic generator. By monitoring the change in the amplitude of the noise signal output by the external display device, it is possible to immediately detect whether the valve is leaking. The utility model has a strong timeliness and realizes remote detection or monitoring of valve leakage, thereby preventing the leakage of chromic anhydride in the ton barrel from being inhaled by the human body and causing acute poisoning and carcinogenesis. In addition, an air intake pump circulates and injects dry gas into the ton barrel to ensure that the chromic anhydride in the ton barrel does not absorb moisture.

[0015] By setting up a dust collection mechanism, the chromic anhydride dust generated during the loading and unloading process of chromic anhydride can be properly handled to avoid the harm of chromic anhydride dust to human health and the environment;

[0016] By setting up a cooling water tank and a temperature sensor, the temperature inside the ton barrel is detected, and a water pump is used to inject circulating water into the cavity of the ton barrel to achieve a cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a circuit flow chart of the utility model.

[0019] In the figure, 1. ton barrel; 2. feed valve; 3. discharge valve; 4. air intake pump; 5. air pipe; 6. air intake valve; 7. air outlet valve; 8. ultrasonic generator; 9. dust suction pipe cover; 10. dust suction pipe; 11. negative pressure fan; 12. dust exhaust hose; 13. chromic anhydride dust absorption water tank; 14. cooling water tank; 15. water pump; 16. water inlet; 17. water outlet; 18. temperature sensor; 19. cavity; 20. signal receiver; 21. external display device. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and some implementation methods.

[0021] exist Figure 1-Figure 2In the invention, an online leakage detection device for chromic anhydride storage is provided, comprising a ton barrel 1, a feed port is arranged at the top of the ton barrel 1, a feed valve 2 is installed at the feed port, a discharge port is arranged at the bottom of the ton barrel 1, a discharge valve 3 is installed at the discharge port, and a detection device for online leakage detection of the ton barrel 1 is also provided, the detection device comprises an air intake pump 4, an air intake valve 6, an air pipe 5, an air outlet valve 7, and a plurality of ultrasonic generators 8, the air intake valve 6 and the air outlet valve 7 are arranged on the ton barrel 1, the air intake pump 4 is fixedly installed on the ton barrel 1 by screws, and the air intake valve 6 and the air outlet valve 7 are respectively connected by the air pipe 5, dry gas circulation is performed inside the ton barrel 1, and a plurality of ultrasonic generators 8 are installed. The ultrasonic generator 8 is respectively arranged at the feed valve 2, the discharge valve 3, the air inlet valve 6 and the air outlet valve 7; it also includes a detection and display device for wirelessly receiving the output signal of the ultrasonic generator 8, the detection and display device includes a signal receiver 20 that can be wirelessly connected to the probe of the ultrasonic generator 8, and an external display device 21 with sound wave spectrum / amplitude display analysis software. The signal receiver 20 is arranged in the external display device 21, and the signal input end of the signal receiver 20 is wirelessly connected to the analog output signal of the ultrasonic generator 8, and the signal output end of the signal receiver 20 is correspondingly connected to the digital signal input end of the external display device 21. The analog signal output by the ultrasonic generator 8 is transmitted through the signal The receiver 20 converts it into a digital signal and transmits it to the external display device 21 through a data line. When in use, dry gas is injected into the ton barrel 1 through the air intake pump 4 via the air intake valve 6, and then discharged into the air intake pump 4 through the air outlet valve 7, forming a circulating dry gas flow in the ton barrel 1 to ensure that the chromic anhydride in the ton barrel 1 does not absorb moisture. At the same time, the ultrasonic generator 8 is used to check the gas leakage at the feed valve 2, the discharge valve 3, the air intake valve 6 and the air outlet valve 7 to form an ultrasonic noise signal. When a leak occurs, the leaking medium passes through the ultrasonic generator 8, thereby generating an ultrasonic wave of a fixed frequency exceeding 20KHz. The generated ultrasonic wave is detected by the probe of the ultrasonic generator 8 to generate an analog signal, which is then transmitted to the ultrasonic generator 8 through the ultrasonic wave generator 8. The signal is transmitted to the signal receiver 20 for reception and converted into a digital signal and transmitted to the external display device 21 through the data line. Since gas leakage will drive the ultrasonic generator 8 to generate an ultrasonic wave of a fixed frequency, the sound intensity of the ultrasonic wave of this frequency is much greater than the intensity of other frequency sound waves. The amplitude spectrum of each frequency sound wave signal in the environment is output on the external display device 21 through specific software. By observing whether a certain frequency noise signal in the figure is significantly enhanced, it is convenient to judge whether a leakage occurs, thereby realizing remote detection or monitoring of valve leakage, and avoiding acute poisoning and cancer caused by inhalation of chromic anhydride in the ton barrel 1 by the human body. The external display device 21 in this embodiment includes a computer, a processor display screen, etc.

[0022] In the present embodiment, a dust suction mechanism for absorbing chromic anhydride dust is also included, the dust suction mechanism includes a negative pressure fan 11, a dust suction pipe 10, and a dust suction pipe cover 9, the dust suction pipe cover 9 covers the feeding port and the unloading port, one end of the dust suction pipe 10 is connected to the outlet of the dust suction pipe cover 9, and the other end of the dust suction pipe 10 is connected to the air inlet of the negative pressure fan 11; the air outlet of the negative pressure fan 11 is connected to a dust exhaust hose 12, and the lower end of the dust exhaust hose 12 is connected to an absorption mechanism for absorbing chromic anhydride dust; the absorption mechanism includes an absorption box, and the absorption box is divided into a chromic anhydride dust absorption water tank 13 and a cooling water tank 14 for cooling the ton barrel 1; the exhaust hose 12 is connected to the air outlet of the negative pressure fan 11, and the lower end of the dust exhaust hose 12 is connected to an absorption mechanism for absorbing chromic anhydride dust. The lower end of the dust hose 12 is connected to the chromic anhydride dust absorption water tank 13; during the loading and unloading process of chromic anhydride, the negative pressure fan 11 is turned on and the motor power is adjusted. The chromic anhydride dust generated during the loading and unloading process is collected by the dust suction pipe cover 9 and the dust suction pipe 10 to prevent the chromic anhydride dust from flying and causing harm to human health and the environment. At the same time, the collected chromic anhydride dust enters the absorption water tank through the dust discharge hose 12, and the chromic anhydride dust is absorbed by an absorption solution such as pure water to form a chromic acid solution. After being used in the absorption water tank for a period of time, the solution will reach a certain concentration, and the absorption water tank will be maintained and cleaned, and the solution that has reached a certain concentration will be recycled and disposed of.

[0023] In this embodiment, the outer wall of the ton barrel 1 is provided with a cavity 19 for water circulation, and the cavity 19 is provided with a water inlet 16 and a water outlet 17; the cooling water tank 14 is provided with a water pump 15, and the water pump 15 is connected with a water pipe, and the water pipe is respectively connected to the water inlet 16 and the water outlet 17; it also includes a temperature sensor 18 for detecting the temperature of the ton barrel 1, and the temperature sensor 18 is arranged on the ton barrel 1, and the temperature sensor 18 is connected to the input end of the water pump 15; during the storage process, the temperature sensor 18 always detects the temperature inside the ton barrel 1. When the temperature reaches the threshold set by the temperature sensor 18, the water pump 15 is controlled to start through circuit signal transmission, and circulating water is injected into the cavity 19 of the ton barrel 1 to achieve a cooling effect, thereby avoiding the internal temperature of the ton barrel 1 being too high, causing a dangerous situation of chromic anhydride being flammable.

[0024] In this embodiment, the material of the ultrasonic generator 8 is nickel-based alloy steel or chromium-nickel alloy steel; it has corrosion resistance and avoids being corroded by chromic anhydride, thereby extending the service life of the ultrasonic generator 8.

[0025] In this embodiment, the control circuit of the utility model is a common circuit in the circuit field. The device of the utility model can be connected to an external power supply through a power cord to provide power to the device. Technicians in the relevant technical field can implement it and will not be elaborated here.

[0026] In this embodiment, the ultrasonic generator 8 is a common ultrasonic generator device, such as THD-T3 model, HC-CS2000C-QC model, etc.

[0027] In this embodiment, the negative pressure fan 11 is a common negative pressure extraction device, such as a B-71D-3 model, a YBF355 model negative pressure extraction motor, etc.

[0028] In this embodiment, the temperature sensor 18 is a common temperature sensor device, such as a WS90501-N model, a KNE-WZP model sensor, etc.

[0029] In this embodiment, the signal receiver 20 is a common wireless receiving device, such as a TL-WDN5200H wireless receiver.

[0030] During the specific implementation of the utility model: dry gas is injected into the ton barrel 1 through the intake valve 6 by the intake pump 4, and then discharged into the intake pump 4 through the outlet valve 7, so that a circulating dry gas flow is formed in the ton barrel 1 to ensure that the chromic anhydride in the ton barrel 1 does not absorb moisture. At the same time, the gas leakage at the feed valve 2, the discharge valve 3, the intake valve 6 and the outlet valve 7 is checked respectively by the ultrasonic generator 8 to form an ultrasonic noise signal. When a leakage occurs, the leaking medium passes through the ultrasonic generator 8, thereby generating an ultrasonic wave of a fixed frequency exceeding 20KHz. The generated ultrasonic wave is detected by the probe of the ultrasonic generator 8 to generate an analog signal, which is transmitted to the signal receiver 20 for reception through wireless transmission, and converted into a digital signal and transmitted to the external display device 21 through a data line. The amplitude spectrum of each frequency sound wave signal in the environment is outputted by specific software on the external display device 21. By observing whether a certain frequency noise signal in the figure is significantly enhanced, it is convenient to judge whether a leakage occurs. The vacuum fan 11 is turned on during the loading and unloading process of chromic anhydride, and the motor power is adjusted. The chromic anhydride dust generated during the loading and unloading process is collected by the dust collection pipe cover 9 and the dust collection pipe 10. The collected chromic anhydride dust enters the absorption water tank through the dust discharge hose 12. The chromic anhydride dust is absorbed by an absorption solution such as pure water to form a chromic acid solution. After being used in the absorption water tank for a period of time, the solution will reach a certain concentration. The absorption water tank is maintained and cleaned, and the solution that reaches a certain concentration is recycled and disposed of. During the storage process, the temperature sensor 18 always detects the temperature inside the ton barrel 1. When the temperature reaches the threshold set by the temperature sensor 18, the water pump 15 is controlled to start through circuit signal transmission, and circulating water is injected into the cavity 19 of the ton barrel 1 to achieve a cooling effect, thereby avoiding the internal temperature of the ton barrel 1 from being too high, which may cause the chromic anhydride to be flammable and dangerous.

[0031] It is worth noting that: in the description of the present utility model, the meaning of "multiple" is two or more than two, unless otherwise clearly and specifically defined. In the present utility model, unless otherwise clearly specified and defined, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; the circuits described in the present utility model are all commonly used circuits in the field, and other related components are all existing commonly used components. For ordinary technicians in the field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An online leakage detection device for chromic anhydride storage, comprising a ton barrel, a feed port is arranged at the top of the ton barrel, a feed valve is installed at the feed port, a discharge port is arranged at the bottom of the ton barrel, a discharge valve is installed at the discharge port, and the characteristics are: It also includes a detection device for online leakage detection of ton barrels, the detection device includes an air intake pump, an air intake valve, an air pipe, an air outlet valve, and a plurality of ultrasonic generators. The air intake valve and the air outlet valve are arranged on the ton barrel, the air intake pump is installed on the ton barrel, and the air intake valve and the air outlet valve are respectively connected through the air pipe to circulate dry gas inside the ton barrel, and a plurality of ultrasonic generators are respectively arranged at the feed valve, the discharge valve, the air intake valve and the air outlet valve; It also includes a detection and display device for wirelessly receiving the output signal of the ultrasonic generator, the detection and display device includes a signal receiver that can be wirelessly connected to the probe of the ultrasonic generator, and an external display device with sound wave spectrum / amplitude display and analysis software. The signal receiver is arranged in the external display device, and the signal input end of the signal receiver is wirelessly connected to the analog output signal of the ultrasonic generator, and the signal output end of the signal receiver is connected to the digital signal input end of the external display device. The analog signal output by the ultrasonic generator is converted into a digital signal by the signal receiver and transmitted to the external display device through a data line. When in use, the valve leakage of the ton barrel is detected by the change in the amplitude of the analog output signal of the ultrasonic generator and the noise signal output by the external display device.

2. The online leakage detection device for chromic anhydride storage according to claim 1, characterized in that: It also includes a dust suction mechanism for absorbing chromic anhydride dust, the dust suction mechanism includes a negative pressure fan, a dust suction pipe, and a dust suction pipe cover, the dust suction pipe cover covers the feed inlet and the discharge port, one end of the dust suction pipe is connected to the outlet of the dust suction pipe cover, and the other end of the dust suction pipe is connected to the air inlet of the negative pressure fan.

3. The online leakage detection device for chromic anhydride storage according to claim 2, characterized in that: The air outlet of the negative pressure fan is connected with a dust exhaust hose, and the lower end of the dust exhaust hose is connected with an absorption mechanism for absorbing chromic anhydride dust.

4. The online leakage detection device for chromic anhydride storage according to claim 3, characterized in that: The absorption mechanism comprises an absorption box body, and the absorption box body is divided into a chromic anhydride dust absorption water tank and a cooling water tank for cooling the ton barrel.

5. The online leakage detection device for chromic anhydride storage according to claim 4, characterized in that: The lower end of the dust exhaust hose is connected to the chromic anhydride dust absorption water tank.

6. The online leakage detection device for chromic anhydride storage according to claim 4, characterized in that: The outer wall of the ton barrel is provided with a cavity for water circulation, and the cavity is provided with a water inlet and a water outlet.

7. The online leakage detection device for chromic anhydride storage according to claim 6, characterized in that: A water pump is arranged in the cooling water tank, and a water pipe is connected to the water pump, and the water pipe is respectively connected to the water inlet and the water outlet.

8. The online leakage detection device for chromic anhydride storage according to claim 7, characterized in that: It also includes a temperature sensor for detecting the temperature of the ton barrel, wherein the temperature sensor is arranged on the ton barrel and connected to the input end of the water pump.

9. The online leakage detection device for chromic anhydride storage according to claim 1, characterized in that: The material of the ultrasonic generator is nickel-based alloy steel or chromium-nickel alloy steel.

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