阅读说明：本技术 一种低耗能半导体式气体传感器 (Low-energy-consumption semiconductor type gas sensor ) 是由 吴佩霞 李晓干 于 2020-12-08 设计创作，主要内容包括：本发明提供一种低耗能半导体式气体传感器,涉及传感器检测技术领域。该低耗能半导体式气体传感器,包括抽气连接管,所述抽气连接管呈管状设置,所述抽气连接管外壁顶部位置设置有集气连接管,所述集气连接管呈环形设置,所述集气连接管任意一端位置与抽气连接管侧壁位置之间设置有第一进气孔,所述抽气连接管外壁远离第一进气孔一侧与集气连接管之间贯穿固定连接有检测集气管,所述集气连接管靠近检测集气管一侧呈锥形设置,且远离第一进气孔一侧之间直径较大。本发明可以使得被检测区域的的气体环境集中,使其浓缩,增加检测区域内空气的检测气体含量,方便检测,使得指定区域内的的检测气体检测更加的精准,使得微弱的气体含量也会被检测到。(The invention provides a semiconductor type gas sensor with low energy consumption, and relates to the technical field of sensor detection. This low power consumption semiconductor formula gas sensor, including the connecting pipe of bleeding, the connecting pipe of bleeding is the tubulose setting, the connecting pipe outer wall top position of bleeding is provided with the gas collection connecting pipe, the gas collection connecting pipe is the annular setting, the arbitrary one end position of gas collection connecting pipe and the connecting pipe lateral wall position of bleeding between be provided with first inlet port, the connecting pipe outer wall of bleeding is kept away from and is run through fixedly connected with between first inlet port one side and the gas collection connecting pipe and detect the gas collection, the gas collection connecting pipe is close to and detects gas collection one side and is the toper setting, and keeps away from that the diameter is great between first inlet port one side. The invention can concentrate the gas environment in the detected area, concentrate the gas environment, increase the content of the detected gas in the air in the detected area, facilitate the detection, enable the detection of the detected gas in the appointed area to be more accurate, and enable the weak gas content to be detected.)

1. The utility model provides a low power consumption semiconductor formula gas sensor, includes connecting pipe (1) of bleeding, its characterized in that: the air exhaust connecting pipe (1) is arranged in a tubular shape, a gas collection connecting pipe (2) is arranged at the top of the outer wall of the air exhaust connecting pipe (1), the gas collection connecting pipe (2) is arranged in an annular shape, a first gas inlet hole (9) is arranged between the position of any one end of the gas collection connecting pipe (2) and the position of the side wall of the air exhaust connecting pipe (1), a detection gas collecting pipe (5) penetrates and is fixedly connected between one side of the outer wall of the air exhaust connecting pipe (1), which is far away from the first gas inlet hole (9), and one side of the gas collection connecting pipe (2), which is close to the detection gas collecting pipe (5), is arranged in a conical shape, the diameter of one side, which is far away from the first gas inlet hole (9), is larger, the diameter of the gas collection connecting pipe (2), which is located at the position of the detection gas collecting pipe (5), is smaller, and a, the center of the fixed support frame (7) is fixedly connected with a gas sensor (8) in a penetrating way.

2. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the detection probe of the gas sensor (8) is close to one side of the detection gas collecting pipe (5), and a wire arrangement hole (6) is formed between the side wall of the gas collecting connecting pipe (2) and the side wall of the air exhaust connecting pipe (1) and positioned above the detection gas collecting pipe (5) in a penetrating mode.

3. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the air exhaust device is characterized in that an isolation air diffusion plate (13) is fixedly connected to one side, close to the first air inlet hole (9), of the inner top wall of the air exhaust connecting pipe (1), one end, far away from the inner top wall of the air exhaust connecting pipe (1), of the isolation air diffusion plate (13) is fixedly connected to the middle position of one side, far away from the first air inlet hole (9), of the inner wall of the air exhaust connecting pipe (1).

4. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the outer wall of the air exhaust connecting pipe (1) is far away from one side of the first air inlet hole (9) and is positioned above the isolation air dispersing plate (13) to penetrate through and be fixedly connected with a balance exhaust pipe (14).

5. The low power consumption semiconductor type gas sensor according to claim 1, wherein: balance blast pipe (14) one side middle part fixedly connected with detection display device (3) are kept away from to the connecting pipe (1) outer wall of bleeding, the signal transmission line of gas sensor (8) gets into through winding displacement hole (6) and bleeds connecting pipe (1) and through winding displacement groove and connecting pipe (1) inner wall fixed connection of bleeding, the signal transmission line of gas sensor (8) is kept away from gas sensor (8) one end and is detected the signal reception end of display device (3).

6. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the gas collection connecting pipe (2) lower surface and the support triangle block (10) of a plurality of evenly distributed of fixed connection between connecting pipe (1) outer wall of bleeding, the central point of bleeding bottom of connecting pipe (1) puts and has seted up second inlet port (15), the central point of bleeding bottom of connecting pipe (1) puts and is located second inlet port (15) position fixedly connected with protection casing (4) of bleeding.

7. The low power consumption semiconductor type gas sensor according to claim 6, wherein: the air exhaust protective cover (4) is made of rubber materials.

8. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the inner wall of the air exhaust connecting pipe (1) is fixedly connected with a second turbofan (12) at a position above a second air inlet hole (15), and the inner wall of the air collection connecting pipe (2) is fixedly connected with a first turbofan (11) at a position of a first air inlet hole (9).

9. The low power consumption semiconductor type gas sensor according to claim 1, wherein: the air exhaust connecting pipe (1) and the air collection connecting pipe (2) are made of cast iron materials, and the inner wall and the outer wall of the air exhaust connecting pipe are both sprayed with antirust paint.

Technical Field

The invention relates to the technical field of sensor detection, in particular to a low-energy-consumption semiconductor type gas sensor.

Background

A gas sensor is a transducer that converts a certain gas volume fraction into a corresponding electrical signal. The probe conditions the gas sample through the gas sensor, typically including filtering out impurities and interfering gases, drying or refrigerating the instrument display. The semiconductor gas sensor is a gas sensor using a semiconductor gas sensitive element as a sensitive element, is the most common gas sensor, is widely applied to combustible gas leakage detection devices in families and factories, is suitable for detection of methane, liquefied gas, hydrogen and the like, and is manufactured by using the resistance value of the sensitive element to be changed due to the oxidation-reduction reaction of gas on the surface of a semiconductor. When the work function of the semiconductor is smaller than the affinity of the adsorbed molecules, the adsorbed molecules will take electrons away from the device and become negative ions to adsorb, and the surface of the semiconductor presents a charge layer. For example, oxygen, etc., which have a tendency to adsorb negative ions, are called oxidized gases. If the work function of the semiconductor is larger than the dissociation energy of the adsorbed molecules, the adsorbed molecules will release electrons to the device, and positive ion adsorption is formed. The gas having a positive ion adsorption tendency includes hydrogen, carbon monoxide, and the like, and these are called reducing gases. When the oxidizing gas adsorbs to the n-type semiconductor and the reducing gas adsorbs to the p-type semiconductor, the semiconductor carriers are reduced and the resistance is increased. When the reducing gas is adsorbed to the n-type semiconductor and the oxidizing gas is adsorbed to the p-type semiconductor, carriers increase and the semiconductor resistance decreases. A non-resistance type gas sensor is also one of the semiconductor gas sensors. The gas sensor is manufactured by utilizing the characteristics of capacitance-voltage characteristic change of a mos diode, threshold voltage change of a mos field effect transistor and the like. The sensor has mature manufacturing process, is convenient for device integration, and has stable performance and low price. The use of specific materials may also make the sensor particularly sensitive to certain gases.

In the prior art, a gas sensor cannot detect an environment with extremely weak gas content, so that the detection is not accurate.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a semiconductor type gas sensor with low energy consumption, which solves the problem that the content of weak gas cannot be detected.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a low-energy-consumption semiconductor type gas sensor comprises an air-extracting connecting pipe which is arranged in a tubular shape, the top of the outer wall of the air exhaust connecting pipe is provided with a gas collection connecting pipe which is arranged annularly, a first air inlet is arranged between the position of any end of the gas collection connecting pipe and the position of the side wall of the air exhaust connecting pipe, a detection gas collecting pipe is fixedly connected between one side of the outer wall of the air exhaust connecting pipe, which is far away from the first gas inlet hole, and the gas collecting connecting pipe, one side of the gas collecting connecting pipe, which is close to the detection gas collecting pipe, is in a conical arrangement, the diameter between the sides far away from the first air inlet hole is larger, the diameter of the gas collection connecting pipe at the position of the conical arrangement is smaller at the side near the first air inlet hole, the inner wall of the gas collection connecting pipe is fixedly connected with a fixed support frame at the position of the detection gas collection pipe, and a gas sensor is fixedly connected with the center of the fixed support frame in a penetrating manner.

Preferably, the detection probe of the gas sensor is close to one side of the detection gas collecting tube, and a wire arranging hole is formed between the side wall of the gas collecting connecting tube and the side wall of the air exhaust connecting tube and above the detection gas collecting tube in a penetrating manner.

Preferably, the position of one side, close to the first air inlet, of the inner top wall of the air exhaust connecting pipe is fixedly connected with an isolation air diffusion plate, and one end, far away from the inner top wall of the air exhaust connecting pipe, of the isolation air diffusion plate is fixedly connected with the middle position of one side, far away from the first air inlet, of the inner wall of the air exhaust connecting pipe.

Preferably, the outer wall of the air exhaust connecting pipe is far away from one side of the first air inlet and is positioned above the isolation air dispersing plate, and a balance exhaust pipe is fixedly connected in a penetrating manner.

Preferably, the balance exhaust pipe is kept away from to the connecting pipe outer wall of bleeding, and balanced exhaust pipe one side middle part position fixedly connected with detects display device, gas sensor's signal transmission line gets into the connecting pipe of bleeding through the winding displacement hole and through winding displacement groove and the connecting pipe inner wall fixed connection of bleeding, gas sensor's signal transmission line is kept away from gas sensor one end and is detected display device's signal reception end.

Preferably, a plurality of supporting triangular blocks which are uniformly distributed are fixedly connected between the lower surface of the gas collection connecting pipe and the outer wall of the air exhaust connecting pipe, a second air inlet hole is formed in the center of the bottom of the air exhaust connecting pipe, and an air exhaust protective cover is fixedly connected to the center of the bottom of the air exhaust connecting pipe and located at the position of the second air inlet hole.

Preferably, the suction protection cover is made of rubber materials.

Preferably, the inner wall of the air exhaust connecting pipe is fixedly connected with a second turbofan at a position above the second air inlet, and the inner wall of the air collection connecting pipe is fixedly connected with a first turbofan at a position of the first air inlet.

Preferably, the air exhaust connecting pipe and the air collection connecting pipe are both made of cast iron materials, and the inner wall and the outer wall of the air exhaust connecting pipe are both sprayed with anti-rust paint.

(III) advantageous effects

The invention provides a semiconductor type gas sensor with low energy consumption. The method has the following beneficial effects:

according to the invention, the detection gas collecting pipe and the isolation gas dispersing plate are arranged, and the second turbofan and the first turbofan are started, so that gas in a detection area is pumped into the air exhaust connecting pipe and flows into the gas collecting connecting pipe, when the gas in the area to be detected flows through the detection gas collecting pipe, the flow rate is reduced, the gas is accumulated, when a certain concentration is accumulated, the detection result can be detected, the detection result is displayed through the detection display device, when the second turbofan and the first turbofan are closed, the gas slowly flows out through the detection gas collecting pipe, the air pressure is balanced, and the next use is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a low power consumption semiconductor type gas sensor according to the present invention;

FIG. 2 is a partial cross-sectional view of a low power consumption semiconductor gas sensor in accordance with the present invention;

FIG. 3 is a top view of a low power consumption semiconductor gas sensor in accordance with the present invention;

fig. 4 is an enlarged view of a portion a in fig. 2.

Wherein, 1, an air extraction connecting pipe; 2. a gas collection connecting pipe; 3. detecting a display device; 4. an air exhaust protective cover; 5. detecting a gas collecting pipe; 6. a wire arranging hole; 7. fixing a support frame; 8. a gas sensor; 9. a first air intake hole; 10. supporting the triangular blocks; 11. a first turbofan; 12. a second turbofan; 13. an isolation air diffuser plate; 14. balancing the exhaust pipe; 15. a second air intake hole.

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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

as shown in fig. 1-4, an embodiment of the present invention provides a low power consumption semiconductor type gas sensor, which includes an air exhaust connection pipe 1, the air exhaust connection pipe 1 is arranged in a tubular shape, a gas collection connection pipe 2 is arranged at the top position of the outer wall of the air exhaust connection pipe 1, the gas collection connection pipe 2 is arranged in an annular shape, a first gas inlet 9 is arranged between the position of any end of the gas collection connection pipe 2 and the position of the side wall of the air exhaust connection pipe 1, a detection gas collection pipe 5 is fixedly connected between the side of the outer wall of the air exhaust connection pipe 1 away from the first gas inlet 9 and the gas collection connection pipe 2 in a penetrating manner, the side of the gas collection connection pipe 2 close to the detection gas collection pipe 5 is arranged in a conical shape, the diameter between the sides of the gas collection connection pipe 2 away from the first gas inlet 9 is smaller, a, the central position of the fixed support frame 7 is fixedly connected with a gas sensor 8 in a penetrating way, and the gas sensor 8 is convenient to detect gas.

The detection probe of the gas sensor 8 is close to one side of the detection gas collecting pipe 5, and a wire arrangement hole 6 is formed between the side wall of the gas collecting connecting pipe 2 and the side wall of the air exhaust connecting pipe 1 and positioned above the detection gas collecting pipe 5 in a penetrating manner. The position of one side of the inner top wall of the air exhaust connecting pipe 1, which is close to the first air inlet 9, is fixedly connected with an isolation air diffusion plate 13, and one end of the isolation air diffusion plate 13, which is far away from the inner top wall of the air exhaust connecting pipe 1, is fixedly connected with the middle position of one side of the inner wall of the air exhaust connecting pipe 1, which is far away from the first air inlet 9.

The outer wall of the air exhaust connecting pipe 1 is far away from one side of the first air inlet 9 and is positioned above the isolation air diffusion plate 13, and a balance exhaust pipe 14 is fixedly connected with the outer wall of the air exhaust connecting pipe, so that air in the air exhaust connecting pipe 1 and the air collection connecting pipe 2 can flow through the balance exhaust pipe 14, and high-pressure air can be discharged. The outer wall of the air exhaust connecting pipe 1 is far away from the middle position fixedly connected with detection display device 3 on one side of the balance exhaust pipe 14, a signal transmission line of the gas sensor 8 enters the air exhaust connecting pipe 1 through the wire arrangement hole 6 and is fixedly connected with the inner wall of the air exhaust connecting pipe 1 through the wire arrangement groove, the signal transmission line of the gas sensor 8 is far away from the signal receiving end of one end of the gas sensor 8 and the detection display device 3, the detection result is displayed through the detection display device 3, and the signal line of the gas sensor 8 is enabled to be neater in the air exhaust connecting pipe 1 and the air.

The supporting triangular blocks 10 which are fixedly connected with a plurality of uniform distributions are fixedly connected between the lower surface of the gas collection connecting pipe 2 and the outer wall of the gas extraction connecting pipe 1, the center of the bottom of the gas extraction connecting pipe 1 is provided with a second gas inlet 15, gas in a detected area enters the gas extraction connecting pipe 1 and the gas collection connecting pipe 2 through the second gas inlet 15, and the center of the bottom of the gas extraction connecting pipe 1 is fixedly connected with a gas extraction protective cover 4 at the position of the second gas inlet 15. The air exhaust protective cover 4 is made of rubber materials, the air tightness of the rubber materials is good, and whether air leakage exists in the pipeline or not is conveniently detected. The inner wall of the air exhaust connecting pipe 1 is fixedly connected with a second turbofan 12 at a position above a second air inlet 15, the inner wall of the air collection connecting pipe 2 is fixedly connected with a first turbofan 11 at a position of a first air inlet 9, and air in an area to be detected is exhausted into the air exhaust connecting pipe 1 and the air collection connecting pipe 2 through the first turbofan 11 and the second turbofan 12. Connecting pipe 1 and the collection gas connecting pipe 2 of bleeding are cast iron material and inner wall and outer wall position and all have sprayed anti-rust paint, and anti-rust paint has good gas tightness and effectually prevents that connecting pipe 1 and the collection gas connecting pipe 2 of bleeding from corroding.

The working principle is as follows: by starting the second turbofan 12 and the first turbofan 11, the gas in the detection area is pumped into the air exhaust connecting pipe 1 and then flows into the gas collection connecting pipe 2, when the gas in the area to be detected flows through the gas collection connecting pipe 2, the flow rate is reduced, the gas is accumulated, the gas can be detected when the gas is accumulated to a certain concentration, the detection result is displayed by the detection display device 3, when the second turbofan 12 and the first turbofan 11 are closed, the gas slowly flows out through the detection gas collection pipe 5, the air pressure is balanced, and the next use is facilitated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.