CN218674898U

CN218674898U - Detection apparatus for nitrogen oxide in waste gas

Info

Publication number: CN218674898U
Application number: CN202221961433.XU
Authority: CN
Inventors: 陈大伟; 彭良辉; 张洁奇
Original assignee: Jiahe Testing Technology Zhejiang Co ltd
Current assignee: Jiahe Testing Technology Zhejiang Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-03-21
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a detection apparatus for nitrogen oxide in waste gas, including the detection case, the upper end fixed mounting of detection case has the nitrogen oxide detector, be equipped with the test tube in the detection case, one side of detection case has the air inlet, the air inlet is connected with first intake pipe, be equipped with the aspiration pump in the first intake pipe, the detection head of nitrogen oxide detector inserts in the test tube, the opposite side of detection case has the gas outlet, the one end of first outlet duct is connected to the gas outlet, first minute pipe and second minute pipe are connected to the other end of first outlet duct, first minute pipe and second are equipped with first electromagnetic valve and second electromagnetic valve respectively on the minute pipe, install at waste gas exhaust's pipeline end, through whether contain nitrogen oxide in the detection waste gas, thereby discharge through first minute pipe and second minute pipe respectively with the waste gas that does not contain nitrogen oxide the waste gas that contains nitrogen oxide.

Description

Detection apparatus for nitrogen oxide in waste gas

Technical Field

The utility model relates to an exhaust-gas detection technical field, concretely relates to detection device of nitrogen oxide in waste gas.

Background

The nitrogen oxides have a great damaging effect on the environment, and are one of the main substances for forming acid rain, and also are the main substances for forming photochemical smog in the atmosphere and an important factor for consuming ozone. In addition, some industrial exhaust gas contains a large amount of nitrogen oxides, and in view of various harmfulness of nitrogen oxides, it is necessary to detect nitrogen oxides in the industrial exhaust gas.

Disclosure of Invention

In order to solve the shortcomings in the prior art, the utility model provides a detection device for nitrogen oxides in waste gas.

In order to realize the technical effect, the utility model discloses a following scheme:

the utility model provides a detection apparatus for nitrogen oxide in waste gas, includes the detection case, the upper end fixed mounting of detection case has the nitrogen oxide detector, be equipped with the test tube in the detection case, one side of detection case has the air inlet, the air inlet is connected with first intake pipe, be equipped with the aspiration pump in the first intake pipe, the air inlet communicates with the one end of test tube, the detector head of nitrogen oxide detector inserts in the test tube, the opposite side of detection case has the gas outlet, the other end intercommunication of gas outlet and test tube, the one end of first outlet duct is connected to the gas outlet, install total valve on the first outlet duct, first minute pipe and second minute pipe are connected to the other end of first outlet duct, be equipped with first solenoid valve on the first minute pipe, be equipped with second solenoid valve on the second minute pipe, be equipped with controlling means in the detection case, controlling means connects, controlling means respectively with nitrogen oxide detector, total valve, first solenoid valve and second solenoid valve electric connection.

The preferable technical scheme, the end-to-end connection nitrogen oxide purifier that the second was managed, nitrogen oxide purifier includes reaction unit, reaction unit's both sides are equipped with second intake pipe and second outlet duct respectively, the second intake pipe is connected with the second branch pipe, be equipped with urea sprinkler in the second intake pipe, reaction unit still is connected with the compressed air device, urea sprinkler, reaction unit, compressed air device all are connected with the controlling means electricity.

According to the preferable technical scheme, the reaction device comprises a shell and a reaction pipeline, the reaction pipeline is arranged inside the shell, two ends of the reaction pipeline are respectively connected with a second air inlet pipe and a second air outlet pipe, and a catalyst is arranged in the reaction pipeline.

According to the technical scheme, the urea spraying device comprises an outer cover, the outer cover is fixedly arranged at the upper end of a second air inlet pipe, a spray head is installed in the outer cover, the spray head is connected with a liquid injection pipe, a through hole is formed in the upper end of the second air inlet pipe, the through hole corresponds to the outer cover, and the lower end of the spray head is located at the position of the through hole.

According to the preferred technical scheme, the port of the first air inlet pipe is arranged in a horn mouth shape, and the dustproof net is installed at the port of the air inlet.

Compared with the prior art, the beneficial effects are that:

the utility model discloses simple structure, convenient to use installs at exhaust emission's pipeline end, through whether contain nitrogen oxide in detecting waste gas to the waste gas that will contain nitrogen oxide and the waste gas that does not contain nitrogen oxide divide the pipe through first minute pipe and second respectively and discharge.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals are as follows: 1. a detection box; 2. a first intake pipe; 3. a first air outlet pipe; 4. a detection tube; 5. a nitrogen oxide detector; 6. a control device; 7. an air pump; 8. a first branch pipe; 9. a second branch pipe; 10. a main valve; 11. a first solenoid valve; 12. a second solenoid valve; 13. a housing; 14. a second intake pipe; 15. a second air outlet pipe; 16. a housing; 17. a spray head; 18. a reaction pipeline; 19. a catalyst; 20. and a compressed air device.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

A device for detecting nitrogen oxides in waste gas comprises a detection box 1, wherein a nitrogen oxide detector 5 is fixedly arranged at the upper end of the detection box 1, the nitrogen oxide in the waste gas is detected by a nitrogen oxide detector 5, a detection tube 4 is arranged in the detection box 1, one side of the detection box 1 is provided with an air inlet which is connected with a first air inlet pipe 2, the first air inlet pipe 2 is provided with an air pump 7, the first air inlet pipe 2 is connected with a waste gas discharge pipe, the exhaust gas is pumped into the detection pipe 4 by the air pump 7, the air inlet is communicated with one end of the detection pipe 4, the detection head of the nitrogen oxide detector 5 is inserted into the detection pipe 4, when the waste gas passes through the detection pipe 4, the nitrogen oxide detector 5 detects the waste gas through the detection head, the other side of the detection box 1 is provided with an air outlet which is communicated with the other end of the detection tube 4, the air outlet is connected with one end of a first air outlet pipe 3, a main valve 10 is arranged on the first air outlet pipe 3, the other end of the first air outlet pipe 3 is connected with a first branch pipe 8 and a second branch pipe 9, a first electromagnetic valve 11 is arranged on the first branch pipe 8, the second branch pipe 9 is provided with a second electromagnetic valve 12, whether the nitrogen oxide detector 5 is contained in the waste gas or not is detected by the nitrogen oxide detector 5, thereby opening the first electromagnetic valve 11 or the second electromagnetic valve 12 to discharge the waste gas containing nitrogen oxides and the waste gas not containing nitrogen oxides through the first branch pipe 8 and the second branch pipe 9 respectively, the detection box 1 is internally provided with a control device 6, the control device 6 is connected with a power supply, and the control device 6 is respectively electrically connected with a nitrogen oxide detector 5, a main valve 10, a first electromagnetic valve 11 and a second electromagnetic valve 12.

The preferred technical scheme, the end-to-end connection nitrogen oxide purifier of second minute pipe 9 will contain the waste gas of nitrogen oxide and manage 9 discharges through the second, handles the nitrogen oxide in the waste gas through nitrogen oxide purifier, nitrogen oxide purifier includes reaction unit, reaction unit's both sides are equipped with second intake pipe 14 and second outlet duct 15 respectively, second intake pipe 14 is connected with second minute pipe 9, be equipped with urea sprinkler on the second intake pipe 14, the waste gas that contains the nitrogen oxide enters into in the second intake pipe 14 through second minute pipe 9 to spray urea and waste gas through urea sprinkler and mix, the gas mixture enters into reaction unit and reacts in, gets rid of the nitrogen oxide, reaction unit still is connected with compressed air device 20, urea sprinkler, reaction unit, compressed air device 20 all are connected with controlling means 6 electricity.

According to the preferable technical scheme, the reaction device comprises a shell 13 and a reaction pipeline 18, the reaction pipeline 18 is arranged inside the shell 13, two ends of the reaction pipeline 18 are respectively connected with a second air inlet pipe 14 and a second air outlet pipe 15, and a catalyst 19 is arranged in the reaction pipeline 18.

According to the technical scheme, the urea spraying device comprises an outer cover 16, the outer cover 16 is fixedly arranged at the upper end of a second air inlet pipe 14, a spray head 17 is installed in the outer cover 16, the spray head 17 is connected with a liquid injection pipe, a through hole is formed in the upper end of the second air inlet pipe 14 and corresponds to the outer cover 16, and the lower end of the spray head 17 is located at the through hole.

According to the preferred technical scheme, the port of the first air inlet pipe 2 is in a horn mouth shape, and the dustproof net is installed at the port of the air inlet.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use, or the directions or positional relationships that those skilled in the art usually understand, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element that is referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Claims

1. The utility model provides a detection apparatus for nitrogen oxide in waste gas, a serial communication port, including the detection case, the upper end fixed mounting of detection case has the nitrogen oxide detector, be equipped with the test tube in the detection case, one side of detection case has the air inlet, the air inlet is connected with first intake pipe, be equipped with the aspiration pump in the first intake pipe, the air inlet communicates with the one end of test tube, the detection head of nitrogen oxide detector inserts in the test tube, the opposite side of detection case has the gas outlet, the other end intercommunication of gas outlet and test tube, the one end of first outlet duct is connected to the gas outlet, install total valve on the first outlet duct, first minute pipe and second minute pipe are connected to the other end of first outlet duct, be equipped with first electromagnetic valve on the first minute pipe, be equipped with second electromagnetic valve on the second minute pipe, be equipped with controlling means in the detection case, controlling means connects the power, controlling means respectively with nitrogen oxide detector, total valve, first electromagnetic valve and second electromagnetic valve electric connection.

2. The apparatus according to claim 1, wherein a nitrogen oxide purification device is connected to an end of the second branch pipe, the nitrogen oxide purification device includes a reaction device, a second air inlet pipe and a second air outlet pipe are respectively disposed on two sides of the reaction device, the second air inlet pipe is connected to the second branch pipe, a urea spraying device is disposed on the second air inlet pipe, the reaction device is further connected to a compressed air device, and the urea spraying device, the reaction device and the compressed air device are electrically connected to the control device.

3. The apparatus according to claim 2, wherein the reaction device comprises a housing and a reaction pipe, the reaction pipe is disposed inside the housing, two ends of the reaction pipe are respectively connected to the second inlet pipe and the second outlet pipe, and a catalyst is disposed in the reaction pipe.

4. The apparatus according to claim 2, wherein the urea spraying device comprises a housing, the housing is fixedly disposed at an upper end of the second intake pipe, a nozzle is installed in the housing, the nozzle is connected to the liquid injection pipe, a through hole is formed at an upper end of the second intake pipe, the through hole corresponds to the housing, and a lower end of the nozzle is located at the through hole.

5. The apparatus according to claim 1, wherein a port of the first intake pipe is formed in a bell mouth shape, and a dust screen is attached to a port of the intake port.