A ship exhaust gas emission monitoring box

Abstract

The present invention discloses a ship exhaust emission monitoring box, which comprises a box body and a box door. The interior of the box body is an electrical cavity, and one end of the electrical cavity facing the box door is open, and this opening is closed by the box door. A sulfur dioxide sensor, a nitrogen dioxide sensor, a main control board, a temperature and humidity sensor, a wireless module, and a power switch are installed in the electrical cavity. The output terminals of the power switch are electrically connected to the power supply terminals of the sulfur dioxide sensor, the nitrogen dioxide sensor, the main control board, the temperature and humidity sensor, and the wireless module respectively. An anemometer is installed at the exhaust port of the ship. One end of the protection tube away from the anemometer is communicated with the upper electrical tube, and the electrical tube is fixed on the box body. The air inlet of the nitrogen dioxide sensor is communicated with one end of the nitrogen dioxide air inlet nozzle, and the other end of the nitrogen dioxide air inlet nozzle is communicated with one end of the intake pipe, and the other end of the intake pipe is connected to the exhaust port. The air inlet end of the sulfur dioxide sensor is communicated with one end of the sulfur dioxide air inlet nozzle, and the other end of the sulfur dioxide air inlet nozzle penetrates out of the box body.

Description

Technical Field

[0001] The present invention relates to an exhaust gas monitoring device, and particularly to a ship exhaust gas emission monitoring box. Background Art

[0002] With the increasingly strict environmental protection requirements, the exhaust gas emissions of ships also need to comply with relevant policies and regulations. Therefore, the environmental protection department generally needs to detect whether the exhaust gas of ships meets the requirements. Currently, it mainly realizes systematic and comprehensive monitoring and control of ship exhaust gas emissions and ship fuel sulfur content by deploying gas sulfide monitoring equipment at the chimney outlet of ships and establishing an exhaust gas emission monitoring network. Thus, it strengthens the monitoring and supervision means of ship exhaust gas emissions and improves the comprehensive law enforcement system; to improve the work efficiency of relevant maritime and environmental protection departments.

[0003] However, the current relevant monitoring equipment has low detection accuracy, especially for nitrogen dioxide. The reason is mainly that the air flow at the ship exhaust port is not directly collected, but the air nearby is collected for detection. Moreover, generally, the air flow velocity (wind speed) is not detected, resulting in a large systematic error. Summary of the Invention

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a ship exhaust gas emission monitoring box with high detection accuracy.

[0005] To achieve the above object, the present invention provides a ship exhaust gas emission monitoring box, including a box body and a box door. The interior of the box body is an electrical cavity, and one end of the electrical cavity facing the box door is open, and this opening is closed by the box door;

[0006] A sulfur dioxide sensor, a nitrogen dioxide sensor, a main control board, a temperature and humidity sensor, a wireless module, and a power switch are installed in the electrical cavity. A controller is installed on the main control board. The power switch is used to control the on-off of the current of the external power supply and the electrical equipment in the electrical cavity;

[0007] The outgoing ends of the power switch are electrically connected to the power connection ends of the sulfur dioxide sensor, the nitrogen dioxide sensor, the main control board, the temperature and humidity sensor, and the wireless module respectively;

[0008] A collection card and a memory are also installed on the main control board. The signal access ends of the collection card are respectively communicatively connected to the signal output ends of the sulfur dioxide sensor, the nitrogen dioxide sensor, and the temperature and humidity sensor. The signal output end of the collection card is communicatively connected to the fifth signal end of the controller; the probe of the temperature and humidity sensor is installed in a detection tube;

[0009] The signal terminal of the wireless module is communicatively connected to the antenna through a data line, and the antenna is used for receiving and transmitting wireless signals; the data line is installed in a protective tube, and a wire is also installed in the protective tube. The wire communicatively connects the anemometer to the acquisition card. The anemometer is installed at the exhaust port of the ship and is used to detect the air flow velocity at the exhaust port; the end of the protective tube away from the anemometer is communicated with the upper electrical tube, and the electrical tube is fixed on the box body;

[0010] The air inlet of the nitrogen dioxide sensor is communicated with one end of the nitrogen dioxide air inlet nozzle, the other end of the nitrogen dioxide air inlet nozzle is communicated with one end of the intake pipe, and the other end of the intake pipe is connected to the exhaust port;

[0011] The air inlet end of the sulfur dioxide sensor is communicated with one end of the sulfur dioxide air inlet nozzle, and the other end of the sulfur dioxide air inlet nozzle penetrates outside the box body.

[0012] Preferably, one end of the box door facing the electrical cavity is hinged to the box body through a hinge, and a lock block is provided at the other end. The lock block includes two lock block fixing plates. One end of the two lock block fixing plates is connected and fixed through a lock block connecting plate, and locking inclined blocks are respectively fixed on the inner sides of the other ends. A tension inclined surface and a lock groove are provided on the locking inclined block. The tension inclined surface is inclined downward from top to bottom and from the end away from the lock block connecting plate to the end close to the lock block connecting plate. The lock groove is engaged with the lock rod;

[0013] A lock block through groove is formed between the end faces of the two locking inclined blocks close to each other, and a lock bar sliding groove is formed among the end faces of the two locking inclined blocks provided with lock grooves, the end face of the lock block connecting plate, and the inner sides of the two lock block fixing plates;

[0014] The lock rod is fixed on the lock bar, and the lock bar is engaged with the lock bar sliding groove and can be slidably assembled in the length direction;

[0015] Trigger plates are respectively fixed on both ends of the lock bar, and a tooth slot is also provided on the lock bar. The tooth slot can be meshed and driven with the gear.

[0016] Preferably, the gear is fixed at one end of the output shaft, the other end of the output shaft is installed in the door lock motor, and the door lock motor can drive the output shaft to rotate forward and backward in the circumferential direction. The door lock motor is installed in the motor slot, and the motor slot is arranged on the power block. A gear slot and a lock bar through groove are also provided on the power block. The gear is installed in the gear slot, and the lock bar through groove is slidably assembled with the lock bar; the power block is fixed on the inner wall of the electrical cavity.

[0017] Preferably, the two trigger plates are respectively opposite to the stroke components in the length direction of the lock bar. The stroke components include a guide cylinder, a stroke switch, and a first stroke fixing plate. The inside of the guide cylinder is a hollow guide inner cylinder. One end of the stroke switch is a limit end, and the limit end is installed in the guide inner cylinder and can slide in the axial direction of the guide cylinder;

[0018] The other end of the travel switch passes through the first travel fixing plate and faces the trigger plate close to it. A spring is installed inside the guide cylinder, and the spring is used to generate an elastic force that hinders the travel switch from moving towards the guide cylinder. The first travel fixing plate is fixed on the inner wall of the electrical cavity;

[0019] One end of the guide cylinder of one travel component away from the travel switch is assembled and fixed with the fixed convex column, and the fixed convex column is fixed on the inner wall of the electrical cavity; One end of the guide cylinder of the other travel component away from the travel switch is assembled and fixed with the guide support plate, and the guide support plate is fixed on the inner wall of the electrical cavity.

[0020] Preferably, the door lock motor is controlled by a motor driver. The power supply wire of the motor driver is led out from the output terminal of the power switch, and the input terminal of the power switch is electrically connected to an external power supply;

[0021] The control end of the motor driver is communicatively connected to the first signal end of the controller, so that the controller can send control instructions to the motor driver; The second signal end and the third signal end of the controller are also respectively communicatively connected to the two travel switches. When the travel switch is triggered, the travel switch closes, so that the controller obtains a signal input.

[0022] Preferably, a sealing groove is further provided at the opening end of the electrical cavity. A sealing strip is installed in the sealing groove, and the box door is pressed against the sealing strip.

[0023] The beneficial effects of the present invention are: The structure of the present invention is simple, and the tail gas at the exhaust port is directly introduced into the nitrogen dioxide sensor through the intake pipe, thereby greatly increasing the detection accuracy of the nitrogen dioxide sensor. In addition, by detecting the tail gas flow rate with an anemometer, the detection accuracy of the nitrogen dioxide sensor can be further increased.

[0024] The present invention also realizes the control of the opening and closing of the box door by setting a lock block and a lock groove on the box door and the box body, so as to ensure that the equipment in the electrical cavity is not damaged or illegally modified, and the parameters are not illegally modified. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the present invention.

[0026] Figure 2 is a schematic structural diagram of the present invention.

[0027] Figure 3 is a schematic structural diagram of the present invention (with the box door open).

[0028] Figure 4 is a schematic structural diagram of the lock block of the present invention.

[0029] Figure 5 is a schematic structural diagram of the present invention.

[0030] Figure 6 is Figure 5 The enlarged view at F1 in the figure.

[0031] Figure 7 It is a schematic diagram of the lock block and lock bar structure of the present invention.

[0032] Figure 8 It is a schematic diagram of the structure at the power block of the present invention. Specific embodiments

[0033] The present invention will be further described below in conjunction with the drawings and embodiments:

[0034] Refer to Figures 1-8 , the ship exhaust gas emission monitoring box of this embodiment includes a box body 200 and a box door 100. The interior of the box body 200 is an electrical cavity 201, and one end of the electrical cavity 201 facing the box door 100 is open, and this opening is closed by the box door 100;

[0035] One end of the box door 100 facing the electrical cavity 201 is hinged and assembled with the box body 200 through a hinge, and a lock block is provided at the other end. The lock block includes two lock block fixing plates 110. One ends of the two lock block fixing plates 110 are connected and fixed through a lock block connecting plate 120, and locking inclined blocks 130 are respectively fixed on the inner sides of the other ends. A tension inclined surface 131 and a lock groove 132 are provided on the locking inclined block 130. The tension inclined surface 131 is inclined downward from top to bottom and from one end far away from the lock block connecting plate 120 to one end close to the lock block connecting plate 120. The lock groove 132 is engaged and assembled with the lock rod 611 to lock the lock block, that is, to lock the box door 100 on the box body 200;

[0036] A lock block through groove 111 is formed between the end faces of the two locking inclined blocks 130 close to each other. A lock bar sliding groove 112 is formed between the end faces of the two locking inclined blocks 130 provided with the lock groove 132, the end face of the lock block connecting plate 120, and the inner sides of the two lock block fixing plates 110;

[0037] The lock rod 611 is fixed on the lock bar 610, and the lock bar 610 is engaged with the lock bar sliding groove 112 and can be slidably assembled in the length direction;

[0038] Trigger plates 620 are respectively fixed at both ends of the lock bar 610, and a tooth slot 612 is also provided on the lock bar 610. The tooth slot 612 can be engaged and driven with the gear 650 to form a gear-rack transmission mechanism.

[0039] The gear 650 is fixed to one end of the output shaft 641, and the other end of the output shaft 641 is inserted into the door lock motor 640. The door lock motor 640 can drive the output shaft to rotate forward and backward in the circumferential direction. The door lock motor 640 is installed in the motor slot 633, and the motor slot 633 is arranged on the power block 630. The power block 630 is also provided with a gear slot 632 and a lock bar through slot 631. The gear 650 is installed in the gear slot 632, and the lock bar through slot 631 is slidably assembled with the lock bar 610; the power block is fixed on the inner wall of the electrical cavity.

[0040] The two trigger plates 620 are respectively opposite to the stroke components in the length direction of the lock bar. The stroke components include a guide cylinder 510, a stroke switch 520, and a first stroke fixing plate 530. The inside of the guide cylinder 510 is a hollow guide inner cylinder 511. One end of the stroke switch 520 is a limit end 521, and the limit end 521 is inserted into the guide inner cylinder 511 and can slide in the axial direction of the guide cylinder.

[0041] The other end of the stroke switch 520 passes through the first stroke fixing plate 530 and is opposite to the trigger plate 620 close to it. A spring 550 is installed in the guide cylinder 510, and the spring 550 is used to generate an elastic force that hinders the formation switch 520 from moving towards the guide cylinder. The first stroke fixing plate 530 is fixed on the inner wall of the electrical cavity 201.

[0042] One end of the guide cylinder of one of the stroke components away from the stroke switch 520 is assembled and fixed with the fixed convex column 560, and the fixed convex column 560 is fixed on the inner wall of the electrical cavity 201;

[0043] One end of the guide cylinder of the other stroke component away from the stroke switch 520 is assembled and fixed with the guide support plate 540, and the guide support plate 540 is fixed on the inner wall of the electrical cavity 201.

[0044] The door lock motor 640 is controlled by a motor driver. The power supply wire of the motor driver is led out from the output end of the power switch 450. The power input end of the power switch 450 is electrically connected to an external power supply. The external power supply can be a battery or the power generation system of a ship.

[0045] The control end of the motor driver is communicatively connected to the first signal end of the controller, so that the controller can send control instructions to the motor driver to control the operating state of the door lock motor 640.

[0046] The second signal end and the third signal end of the controller are also respectively communicatively connected to the two stroke switches. When the stroke switch is triggered, the stroke switch closes, so that the controller obtains a signal input.

[0047] See Figure 3, in this embodiment, the travel switch located above is referred to as the first travel switch, and the one below is the second travel switch. When the box door 100 is locked, the second travel switch is triggered, and the lock rod 611 is engaged and assembled with the lock groove 132, so that the box door 100 cannot be opened.

[0048] When the box door 100 needs to be opened, the controller sends a control instruction to the motor driver, so that the door lock motor drives the lock bar to move towards the first travel switch through the gear until the first travel switch is triggered, and then the door lock motor stops running. At this time, the lock rod is separated from the lock groove, so that the box door can be opened.

[0049] When the box door needs to be locked, the door lock motor drives the gear to reverse, so as to drive the lock bar to move towards the second travel switch. During this process, the lock rod first contacts the tension inclined surface 131, so as to pull the box door 100 towards the box body 200 through the tension inclined surface 131, which makes the box door closely attached to the end face of the box body. Finally, the lock rod is engaged and assembled with the lock groove, and at this time the second travel switch is triggered, and the door lock motor stops running.

[0050] Preferably, a sealing groove 202 is further provided at the opening end of the electrical cavity 201, a sealing strip 220 is installed in the sealing groove 202, and the box door 100 is pressed against the sealing strip 220 to achieve the sealing between the box door and the box body, so as to prevent water or ash from entering the electrical cavity. During the locking process of the box door, the box door is tightened towards the box body through the action of the lock rod and the tension inclined surface 131, so as to squeeze the sealing strip to obtain a better sealing effect.

[0051] The controller can be a PLC, MCU, CPU, etc. Its fourth signal terminal is communicatively connected to the signal terminal of the wireless module. The wireless module is used for communicating with external devices, and the external devices can be a server, a user's computer or mobile phone, etc. During use, the external device sends a control instruction to the controller through the wireless module, so as to control the operation of the motor to open and close the box door. This design has high security, can prevent others from accidentally opening the electrical cavity, and can also prevent others from modifying the internal devices or adjusting the internal parameters after opening the electrical cavity to avoid monitoring.

[0052] A sulfur dioxide sensor 430, a nitrogen dioxide sensor 440, a main control board 460, a temperature and humidity sensor 470, a wireless module 480, and a power switch 450 are installed in the electrical cavity 201. The controller is installed on the main control board 460. The power switch 450 is used to control the on-off of the current between the external power supply and the electrical equipment in the electrical cavity, and it can be a knife switch.

[0053] The outgoing terminals of the power switch 450 are electrically connected to the power connection terminals of the sulfur dioxide sensor 430, the nitrogen dioxide sensor 440, the main control board 460, the temperature and humidity sensor 470, and the wireless module 480 respectively, so as to supply power to them.

[0054] A collection card and a memory are also installed on the main control board 460. The signal access terminals of the collection card are respectively communicatively connected to the signal output terminals of the sulfur dioxide sensor 430, the nitrogen dioxide sensor 440, and the temperature and humidity sensor 470. The signal output terminal of the collection card is communicatively connected to the fifth signal terminal of the controller, so that the signals of the sulfur dioxide sensor 430, the nitrogen dioxide sensor 440, and the temperature and humidity sensor 470 can be input into the controller;

[0055] The probe of the temperature and humidity sensor 470 is installed in the detection tube 313 to detect the temperature and humidity outside the box.

[0056] The wireless module can be a 4G module, a Bluetooth module, etc. In this embodiment, the 4G module is selected as the wireless module, and the signal terminal of the wireless module is also communicatively connected to the antenna 420 through a data line, and the antenna 420 is used for receiving and transmitting wireless signals.

[0057] The data line is installed in the protection tube 320, and a wire is also installed in the protection tube 320. The wire communicatively connects the anemometer 410 and the collection card, so that the signal collected by the anemometer can be input into the controller. The anemometer is installed at the exhaust port of the ship and is used to detect the air flow velocity of the exhaust port; the end of the protection tube 320 away from the anemometer is communicated with the upper electrical tube 312, and the electrical tube 312 is fixed on the box body.

[0058] The air inlet of the nitrogen dioxide sensor is communicated with one end of the nitrogen dioxide inlet nozzle 314, the other end of the nitrogen dioxide inlet nozzle 314 is communicated with one end of the inlet pipe 330, and the other end of the inlet pipe 330 is connected to the exhaust port, so that the air flow at the exhaust port directly enters the inlet pipe 330, and the concentration of nitrogen dioxide in the air flow can be detected relatively accurately by adding the air flow velocity;

[0059] The air inlet end of the sulfur dioxide sensor is communicated with one end of the sulfur dioxide inlet nozzle 311, and the other end of the sulfur dioxide inlet nozzle 311 penetrates outside the box to detect the concentration of sulfur dioxide in the air outside the box.

[0060] The power switch 450, the main control board 460, and the temperature and humidity sensor 470 are all installed in the protection frame 210, and the protection frame 210 is fixed on the inner wall of the electrical cavity 201.

[0061] The exhaust ports of the nitrogen dioxide sensor and the sulfur dioxide sensor can be led out of the box or directly in the box.

[0062] During use, part of the air flow at the exhaust port enters the inlet pipe, and the inlet pipe guides the air flow to the nitrogen dioxide sensor for detection. The anemometer detects the air flow velocity, and the concentration of nitrogen dioxide can be accurately calculated through the detected velocity and the nitrogen dioxide concentration.

[0063] After the air flow is discharged from the exhaust port, it will enter the sulfur dioxide sensor through the sulfur dioxide inlet nozzle for detection.

[0064] The external device can read the relevant detection data in real time by communicating with the wireless module, or the controller controls the wireless module to transmit the packaged detection data to the external device.

[0065] The signal terminal in this embodiment only refers to the corresponding pin. The first, second, third, etc. only indicate different pins. In specific implementation, the corresponding pins need to be selected according to the functions described in this embodiment and the corresponding pin definitions.

[0066] Where the present invention is not described in detail, it is the well-known technology of those skilled in the art.

[0067] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A ship exhaust gas emission monitoring box, comprising a box body and a box door. The interior of the box body is an electrical cavity, and one end of the electrical cavity facing the box door is open, and this opening is closed by the box door; the characteristics are as follows: A sulfur dioxide sensor, a nitrogen dioxide sensor, a main control board, a temperature and humidity sensor, a wireless module, and a power switch are installed in the electrical cavity. A controller is installed on the main control board. The power switch is used to control the on-off of the current between the external power supply and the electrical equipment in the electrical cavity. The output terminals of the power switch are electrically connected to the power connection terminals of the sulfur dioxide sensor, the nitrogen dioxide sensor, the main control board, the temperature and humidity sensor, and the wireless module respectively. A data acquisition card and a memory are also installed on the main control board. The signal input terminals of the data acquisition card are communicatively connected to the signal output terminals of the sulfur dioxide sensor, the nitrogen dioxide sensor, and the temperature and humidity sensor respectively. The signal output terminal of the data acquisition card is communicatively connected to the fifth signal terminal of the controller. The probe of the temperature and humidity sensor is inserted into the detection tube. The signal terminal of the wireless module is communicatively connected to the antenna through a data cable. The antenna is used for receiving and transmitting wireless signals. The data cable is installed in a protective tube, and a wire is also installed in the protective tube. The wire communicatively connects the anemometer to the data acquisition card. The anemometer is installed at the exhaust port of the ship and is used to detect the air flow velocity at the exhaust port. One end of the protective tube away from the anemometer is communicated with the electrical tube, and the electrical tube is fixed on the box body. The air inlet of the nitrogen dioxide sensor is communicated with one end of the nitrogen dioxide inlet nozzle, and the other end of the nitrogen dioxide inlet nozzle is communicated with one end of the inlet pipe. The other end of the inlet pipe is connected to the exhaust port. The air inlet end of the sulfur dioxide sensor is communicated with one end of the sulfur dioxide inlet nozzle, and the other end of the sulfur dioxide inlet nozzle penetrates out of the box body. One end of the box door facing the electrical cavity is hinged to the box body through a hinge, and a lock block is provided at the other end. The lock block includes two lock block fixing plates. One end of the two lock block fixing plates is connected and fixed through a lock block connecting plate, and locking inclined blocks are respectively fixed on the inner sides of the other ends. A tension inclined surface and a lock groove are provided on the locking inclined block. The tension inclined surface is inclined downward from top to bottom and from the end away from the lock block connecting plate to the end close to the lock block connecting plate. The lock groove is engaged with the lock rod. A lock block through groove is formed between the end faces of the two locking inclined blocks close to each other. A lock bar chute is formed between the end faces of the two locking inclined blocks provided with lock grooves, the end face of the lock block connecting plate, and the inner sides of the two lock block fixing plates. The lock rod is fixed on the lock bar, and the lock bar is engaged with the lock bar chute and can be slidably assembled in the length direction. Trigger plates are respectively fixed at both ends of the lock bar, and a tooth slot is also provided on the lock bar. The tooth slot can be meshed and driven with a gear. A sealing groove is also provided at the opening end of the electrical cavity. A sealing strip is installed in the sealing groove, and the box door is pressed against the sealing strip. The gear is fixed at one end of the output shaft, and the other end of the output shaft is installed in the door lock motor. The door lock motor can drive the output shaft to rotate forward and backward in the circumferential direction. The door lock motor is installed in the motor groove, and the motor groove is provided on the power block. A gear groove and a lock bar through groove are also provided on the power block. The gear is installed in the gear groove, and the lock bar through groove is slidably assembled with the lock bar. The power block is fixed on the inner wall of the electrical cavity. The two trigger plates are respectively opposite to the stroke assembly in the length direction of the locking bar. The stroke assembly includes a guiding cylinder, a stroke switch, and a first stroke fixing plate. The inside of the guiding cylinder is a hollow guiding inner cylinder. One end of the stroke switch is a limiting end, which is inserted into the guiding inner cylinder and can slide axially in the guiding cylinder. The other end of the stroke switch passes through the first stroke fixing plate and is opposite to the adjacent trigger plate. A spring is installed in the guiding cylinder, and the spring is used to generate an elastic force that hinders the movement of the forming switch towards the guiding cylinder. The first stroke fixing plate is fixed on the inner wall of the electrical cavity. One end of the guiding cylinder of one stroke assembly away from the stroke switch is assembled and fixed with a fixed convex column, and the fixed convex column is fixed on the inner wall of the electrical cavity. One end of the guiding cylinder of the other stroke assembly away from the stroke switch is assembled and fixed with a guiding support plate, and the guiding support plate is fixed on the inner wall of the electrical cavity.

2. The ship exhaust gas emission monitoring box according to claim 1, characterized in that: The door lock motor is controlled by a motor driver. The power supply wire of the motor driver is led out from the output terminal of the power switch, and the input terminal of the power switch is electrically connected to an external power supply. The control terminal of the motor driver is communicatively connected to the first signal terminal of the controller, so that the controller can send control instructions to the motor driver. The second signal terminal and the third signal terminal of the controller are also respectively communicatively connected to the two stroke switches. When the stroke switch is triggered, the stroke switch closes, so that the controller obtains a signal input.

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