阅读说明：本技术 过温保护的烟尘烟气采样检测设备及方法 (Smoke and dust flue gas sampling detection equipment and method with over-temperature protection function ) 是由 张伟治 曾令文 陈益思 蓝权明 张力 于 2019-07-26 设计创作，主要内容包括：本发明是一种过温保护的烟尘烟气采样检测设备,可用于对固定污染源所排放的烟尘烟气的温湿度信息进行检测,包括：采样管,所述采样管前端设有至少一个传感器；还包括：加动力能的冷却介质,所述加动力能的冷却介质用于对所述传感器进行降温保护。此外还公开了一种过温保护的烟尘烟气采样检测方法,本发明是一种具有大大减轻采样员负担、简化操作流程的过温保护的烟尘烟气采样检测设备及方法。(The invention relates to a smoke and dust flue gas sampling detection device with over-temperature protection, which can be used for detecting the temperature and humidity information of smoke and dust flue gas emitted by a fixed pollution source and comprises the following components: the sampling tube, the said sampling tube front end has at least one sensor; further comprising: the cooling medium for adding kinetic energy is used for cooling and protecting the sensor. The invention also discloses a smoke and dust smoke sampling detection method with over-temperature protection, which greatly lightens the burden of a sampler and simplifies the operation process.)

1. The utility model provides a smoke and dust flue gas sampling check out test set of excess temperature protection, can be used to detect the humiture information of the smoke and dust flue gas that fixed pollution sources discharged, includes: the front end of the sampling pipe is provided with a sensor; it is characterized by also comprising: the cooling medium for adding kinetic energy is used for cooling and protecting the sensor.

2. The over-temperature protection smoke sampling and detecting device as claimed in claim 1, wherein the sensor comprises a temperature sensor and a humidity sensor, the temperature sensor is used for detecting the temperature of smoke and dust smoke discharged by a fixed pollution source, the device further comprises an air pump, the cooling medium is air, and the air pump is used for driving the air to form cooling air flow flowing in a reverse sampling direction and performing cooling protection on the humidity sensor.

3. The over-temperature protected soot and smoke sampling and detecting device according to claim 2, further comprising adjusting means for adjusting the flow rate of said cooling air flow.

4. The over-temperature protected smoke sampling and detection device of claim 3 further comprising a power board for adjusting the operating power of said air pump and thereby the flow rate of said cooling air flow.

5. The over-temperature protection smoke sampling and detecting device as claimed in claim 2, wherein said air pump is used for driving said air to form a cooling air flow flowing in a reverse sampling direction, and said cooling air flow flows in said sampling tube and protects said humidity sensor from temperature reduction.

6. The smoke and dust and smoke sampling and detecting equipment with the over-temperature protection function as claimed in claim 1, wherein the cooling medium for adding the kinetic energy is liquid nitrogen, and further comprises a liquid nitrogen bottle, the liquid nitrogen is stored in the liquid nitrogen bottle, and the liquid nitrogen bottle is connected with a flow limiting device, then outputs a nitrogen flow flowing in the reverse sampling direction, and carries out the temperature reduction protection on the humidity sensor.

7. The method for protecting the smoke dust and smoke gas sampling and detecting equipment from the over-temperature by using the smoke dust and smoke gas sampling and detecting equipment as claimed in claim 3 is carried out before the equipment formally enters a sampling and detecting step, and is characterized by comprising the following steps of:

1. providing smoke and dust flue gas sampling and detecting equipment, wherein the equipment is provided with an air pump, the air pump is communicated with a sampling pipe, and the front end of the sampling pipe of the equipment is provided with a temperature sensor and a humidity sensor which are used for detecting temperature and humidity information of smoke and dust flue gas emitted by a fixed pollution source;

2. the air pump drives air to form cooling airflow flowing in the reverse sampling direction to flow through the adoption pipe, and the humidity sensor is cooled and protected;

3. stretching the equipment into a fixed pollution source, judging whether the temperature of the smoke and dust flue gas discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, if so, entering a step 4, and otherwise, entering a step 5;

4. sending out an over-range alarm, withdrawing the equipment from a fixed pollution source, and ending sampling;

5. adjusting the flow rate of the cooling air flow through the adjusting device, gradually reducing the flow rate of the cooling air flow to 0, simultaneously judging whether the temperature of the smoke dust and fume discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, returning to the step 4 if the temperature of the smoke dust and fume exceeds the temperature range born by the humidity sensor, and otherwise, entering the step 6;

6. and entering a sampling detection step formally.

Technical Field

The invention relates to the technical field of smoke and dust flue gas sampling and processing equipment, in particular to smoke and dust flue gas sampling and detecting equipment and a method with over-temperature protection, which greatly reduce the burden of a sampler and simplify the operation process.

Background

1. When the temperature and humidity of the smoke and dust flue gas discharged by fixed pollution sources such as a chimney are detected, a temperature sensor and a humidity sensor directly detect the humidity of the high-temperature high-humidity smoke and dust flue gas, and if the temperature of the smoke and dust flue gas exceeds the working range of the temperature sensor and the humidity sensor, equipment can give an alarm or stop the machine, but the equipment does not have any plan for protecting the sensor from high-temperature damage in practice. Therefore, the temperature and humidity information detector of the smoke and dust flue gas that current integral type was discharged is in the course of the work, often because the high temperature of smoke and dust flue gas makes its temperature sensor or humidity transducer receive the damage.

2. After the smoke is detected by other temperature detecting instruments, the humidity is detected, so that the humidity sensor can be protected; however, such a detection process is cumbersome and the sampler needs to carry more equipment, thereby increasing the burden on the sampler.

Therefore, there is a need for a temperature and humidity information detection apparatus and method for protecting the discharged smoke and dust flue gas from over-temperature, which can greatly reduce the burden of the sampling personnel and simplify the operation process.

Disclosure of Invention

The invention aims to provide the smoke dust and flue gas sampling detection equipment and the method with the over-temperature protection function, which greatly reduce the burden of a sampler and simplify the operation process.

In order to achieve the above object, a first technical solution provided by the present invention is: the utility model provides a smoke and dust flue gas sampling check out test set of excess temperature protection can be used to detect the humiture information of the smoke and dust flue gas that fixed pollution sources discharged, includes: the sampling tube, the said sampling tube front end has at least one sensor; further comprising: the cooling medium for adding kinetic energy is used for cooling and protecting the sensor.

The sensor includes temperature sensor and humidity transducer, temperature sensor is used for detecting the temperature of the smoke and dust flue gas that fixed pollution source discharged, still includes the air pump, coolant is the air, the air pump is used for driving the air forms the cooling air current that flows of anti-sampling direction, and right humidity transducer cools down the protection.

The device further comprises a regulating device used for regulating the flow rate of the cooling air flow.

The air pump is characterized by further comprising a power supply power board, wherein the power supply power board is used for adjusting the working power of the air pump so as to adjust the flow rate of the cooling air flow.

The air pump is used for driving the air forms the cooling air current that flows against the sampling direction, just the cooling air current is in flow in the sampling pipe, and right humidity transducer cools down the protection.

The cooling medium that adds the kinetic energy is the liquid nitrogen, still includes the liquid nitrogen bottle, store in the liquid nitrogen bottle the liquid nitrogen, the liquid nitrogen bottle exports the flowing nitrogen gas stream of contrary sampling direction after connecting a current limiting device, and right humidity transducer cools down the protection.

In order to achieve the above object, the second technical solution provided by the present invention is: the method for temperature protection is provided before the equipment formally enters the sampling detection step, and comprises the following steps:

1. providing smoke and dust flue gas sampling and detecting equipment, wherein the equipment is provided with an air pump, the air pump is communicated with a sampling pipe, and the front end of the sampling pipe of the equipment is provided with a temperature sensor and a humidity sensor which are used for detecting temperature and humidity information of smoke and dust flue gas emitted by a fixed pollution source;

2. the air pump drives air to form cooling airflow flowing in the reverse sampling direction to flow through the adoption pipe, and the humidity sensor is cooled and protected;

3. stretching the equipment into a fixed pollution source, judging whether the temperature of the smoke and dust flue gas discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, if so, entering a step 4, otherwise, entering a step 5;

4. sending out an over-range alarm, withdrawing the equipment from a fixed pollution source, and ending sampling;

5. adjusting the flow rate of the cooling air flow through the adjusting device, gradually reducing the flow rate of the cooling air flow to 0, simultaneously judging whether the temperature of the smoke dust and fume discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, returning to the step 4 if the temperature of the smoke dust and fume exceeds the temperature range born by the humidity sensor, and otherwise, entering the step 6;

6. and entering a sampling detection step formally.

Compared with the prior art, the smoke dust and smoke sampling and detecting equipment and method for over-temperature protection have the advantages that:

1. the air pump can drive air to form cooling airflow flowing in the reverse sampling direction to flow through the sampling pipe, and the humidity sensor is protected by cooling;

2. the alarm can prompt that the temperature of the flue gas is too high, the temperature of the test environment is too high, and the humidity detection is not suitable, otherwise, the humidity sensor is damaged due to high temperature;

3. when the air pump works, air outside the chimney enters the air supply pipe, so that the temperature of a humidity probe of the humidity sensor is reduced, and when the temperature exceeds the detection temperature, the humidity sensor can be prevented from being damaged by high temperature;

4. and when the temperature of the smoke dust and smoke gas does not exceed the temperature range born by the humidity sensor, detecting the humidity.

The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.

Drawings

FIG. 1 is a schematic diagram of an embodiment of a smoke and dust sampling and detecting device of the present invention.

Fig. 2 is a flow chart of the over-temperature protection method of the smoke sampling and detecting device of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

First, a description will be given of stationary pollution sources, which are classified into organized emission sources and unorganized emission sources. The organized emission source refers to a flue, a chimney, an exhaust funnel and the like, the unorganized emission source refers to an unorganized emission facility arranged in an open-air environment or an unorganized emission workshop, a work shed and the like, smoke and fume emitted by the unorganized emission facility and the work shed contain solid smoke and dust and also contain various gaseous and aerosol harmful substances, and the invention aims at the organized emission source such as: flues, chimneys, exhaust stacks, and the like.

In addition, the temperature and humidity information of the discharged smoke and dust flue gas of the fixed pollution source comprises: and fixing parameters such as temperature, humidity, flow velocity and the like of smoke dust and smoke gas discharged by the pollution source.

Before formal sampling detection is carried out on the smoke dust and smoke gas emitted by a fixed pollution source by using smoke dust and smoke gas sampling detection equipment, the temperature information and the humidity information of the smoke dust and smoke gas emitted by the detected fixed pollution source need to be known in advance, which is also called as the working condition detection of the fixed pollution source, and whether the temperature of the smoke dust and smoke gas emitted by the fixed pollution source is too high or not is confirmed, so that the equipment is damaged by high temperature, and unnecessary loss is caused.

Referring to fig. 1, there is provided an over-temperature protection smoke sampling and detecting device 100 for detecting temperature and humidity information of smoke discharged from a stationary pollution source, including: the sampling tube 10, the sampling tube 10 front end is equipped with at least one sensor; further comprising: the cooling medium for adding kinetic energy is used for cooling and protecting the sensor. The sensors include a temperature sensor and a humidity sensor, and can be used for detecting parameters such as temperature and humidity of the fixed pollution source.

In one embodiment, referring to fig. 1, the sensor includes a temperature sensor 1 and a humidity sensor 2, the temperature sensor 1 is configured to detect a temperature of smoke and dust smoke emitted from a fixed pollution source, the sensor further includes an air pump 3, the cooling medium is air, the air pump 3 is configured to drive the air to form a cooling airflow flowing in a reverse sampling direction, and cool and protect the humidity sensor 2, and the cooling airflow is configured to cool a temperature of an environment where the humidity sensor 2 is located. It should be noted that, among the smoke and dust flue gas sampling check out test set, dispose temperature sensor and humidity transducer, if, humidity transducer's normal stable working range is 0 ~ 200 degrees centigrade, if the temperature of the smoke and dust flue gas that fixed pollution source discharged exceeds 200 degrees centigrade, the serious distortion of the humidity degree of accuracy that humidity transducer detected on the one hand, the high temperature that exceeds 200 degrees centigrade in addition can also damage humidity transducer, has caused the damage of equipment, influences the working life of equipment. In the above, 200 ℃ is only an assumed value of one case, and may be other temperature values, and the protection scope of the present invention is not limited to the temperature value of 200 ℃.

In one embodiment, referring to fig. 1, the cooling device further comprises an adjusting device 4, and the adjusting device 4 is used for adjusting the flow rate of the cooling air flow. Through adjusting device 4, can adjust the velocity of flow of cooling air, and then adjust the ambient temperature that humidity sensor 2 is located, because the velocity of flow of cooling air is bigger, the ambient temperature that humidity sensor 2 is located is lower, otherwise, the velocity of flow of cooling air is lower, the ambient temperature that humidity sensor 2 is located is higher.

In one embodiment, referring to fig. 1, the air pump further comprises a power board 5, and the power board 5 is used for adjusting the working power of the air pump 3 and thus the flow rate of the cooling air flow.

In one embodiment, referring to fig. 1, the air pump 3 is used to drive the air to form a cooling air flow flowing in the reverse sampling direction, and the cooling air flow flows in the sampling tube 10 and protects the humidity sensor 2 from being cooled down. In this embodiment, the cooling gas flow flows in the sampling tube 10, the sampling tube 10 is a carrier of the cooling gas flow, and the flow direction of the cooling gas flow is an inverse sampling direction, that is, referring to fig. 1, the sampling direction flows from left to right in fig. 1, that is, the direction from the inlet of the device to the host of the device, and the inverse sampling direction flows from right to left, that is, the direction from the host of the device to the inlet.

In one embodiment, the cooling medium for adding kinetic energy is liquid nitrogen, and the device further comprises a liquid nitrogen bottle, wherein the liquid nitrogen is stored in the liquid nitrogen bottle, and the liquid nitrogen bottle is connected with a flow limiting device and then outputs a nitrogen flow flowing in the reverse sampling direction and carries out cooling protection on the humidity sensor. In this embodiment, need additionally to carry a liquid nitrogen bottle, export the liquid nitrogen from the liquid nitrogen bottle and flow along the contrary direction of sampling, it is right humidity transducer cools down and falls the protection, and the temperature of liquid nitrogen is very low, can carry out rapid cooling to the material, in this embodiment, need the flow rate of strict control good nitrogen gas flow to control the good excess temperature protection effect to the sensor. If desired, a nitrogen stream may also be used in combination with air.

Referring to fig. 2, in order to achieve the above object, a second technical solution provided by the present invention is: the method for temperature protection is provided before the equipment formally enters the sampling detection step, and comprises the following steps:

s001, providing smoke and dust flue gas sampling and detecting equipment, wherein the equipment is provided with an air pump, the air pump is communicated with a sampling pipe, and the front end of the sampling pipe of the equipment is provided with a temperature sensor and a humidity sensor which are used for detecting temperature and humidity information of smoke and dust flue gas emitted by a fixed pollution source;

s002, driving air to form cooling airflow flowing in a reverse sampling direction to flow through the sampling pipe by the air pump, and cooling and protecting the humidity sensor, wherein the temperature sensor and the humidity sensor are arranged at the front end of the sampling pipe, and when the cooling airflow flows through the sampling pipe, the ambient temperature where the temperature sensor and the humidity sensor are located can be cooled, so that the humidity sensor is prevented from being damaged due to high temperature;

s003, stretching the equipment into a fixed pollution source, judging whether the temperature of the smoke and dust flue gas discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, if so, entering a step S004, otherwise, entering a step S005;

s004, sending out an over-range alarm, withdrawing the equipment from a fixed pollution source, and finishing sampling; it should be noted that, when the temperature of the smoke and dust flue gas emitted by the fixed pollution source exceeds the temperature range borne by the humidity sensor, sampling detection cannot be performed, and normal sampling can be performed only when the temperature of the smoke and dust flue gas emitted by the fixed pollution source does not exceed the temperature range borne by the humidity sensor.

In step S004, assuming that the normal and stable working range of the humidity sensor is 0-200 ℃, if the working range exceeds 200 ℃, on one hand, the accuracy of the humidity detected by the humidity sensor is seriously distorted, and in addition, the humidity sensor can be damaged by a high temperature exceeding 200 ℃, so that the damage of the equipment is caused, and the working life of the equipment is influenced. It should be noted that, in step S004, when the fixed pollution source is the chimney, for example, under normal conditions, the temperature of the smoke and dust fume discharged from the chimney is generally within 200 degrees celsius, but the accidental high temperature exceeding 200 degrees celsius is not excluded, so that by the over-temperature protection method, the humidity sensor of the device can be prevented from being damaged due to high temperature by extending the device into a fixed pollution source with ultrahigh temperature, because even if the temperature of the fixed pollution source exceeds 200 degrees celsius, due to the over-temperature protection method of the present invention, the air is driven by the air pump to form a cooling airflow flowing in the reverse sampling direction to flow through the adoption pipe, so as to cool and protect the humidity sensor, and the temperature of the humidity sensor does not exceed 200 degrees, so as to prevent the humidity sensor from being damaged due to high temperature.

It should be noted that, the temperature of 200 degrees celsius is only a hypothetical value of one case, and may be other temperature values, and the protection scope of the present invention is not limited to the temperature value of 200 degrees celsius.

S005, adjusting the flow rate of the cooling air flow through the adjusting device, gradually reducing the flow rate of the cooling air flow to 0, meanwhile, judging whether the temperature of the smoke and dust flue gas discharged by the fixed pollution source detected by the temperature sensor exceeds the temperature range born by the humidity sensor, if so, returning to the step S004, otherwise, entering the step S006;

and S006, formally entering a sampling detection step.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.