阅读说明：本技术 一种泵吸式气体探测器的气路进水识别并排水的系统及方法 (System and method for gas path water inlet identification and water drainage of pump-suction type gas detector ) 是由 牛宏 尹怀兵 孙鹏 马天翔 于 2021-07-12 设计创作，主要内容包括：本发明涉及气体检测技术领域,且公开了一种泵吸式气体探测器的气路进水识别并排水的系统,包括缓冲容器,所述缓冲容器的顶部设置有与其连通的第一支管,所述第一支管上设置有与其连通的第二支管,所述第一支管和第二支管上均设置有三通电磁阀,所述第一支管远离缓冲容器的一端连接有直流隔膜泵,所述直流隔膜泵的吸气端与第二支管的另一端连通,所述第一支管上的三通电磁阀上连接有排水进气管。本方案通过在气体探测气路上设置浮子液位传感器可以实时检测缓冲容器内是否存在积水,当有水时,再通过三通电磁阀、直流隔膜泵和排水进气管的相互配合,将积水排出,实现液体自动识别并排出的功能,有效地防止气体探测器内气敏元件进水失效。(The invention relates to the technical field of gas detection, and discloses a gas path water inlet identification and drainage system of a pump-suction type gas detector, which comprises a buffer container, wherein a first branch pipe communicated with the buffer container is arranged at the top of the buffer container, a second branch pipe communicated with the first branch pipe is arranged on the first branch pipe, three-way electromagnetic valves are arranged on the first branch pipe and the second branch pipe respectively, one end of the first branch pipe, which is far away from the buffer container, is connected with a direct-current diaphragm pump, the air suction end of the direct-current diaphragm pump is communicated with the other end of the second branch pipe, and a drainage and air inlet pipe is connected to the three-way electromagnetic valve on the first branch pipe. This scheme is through setting up float level sensor on gaseous survey gas circuit and whether there is ponding in can real-time detection buffer container, and when water, the mutually supporting of rethread three solenoid valve, direct current diaphragm pump and drainage intake pipe discharges ponding, realizes liquid automatic identification and exhaust function, prevents effectively that the interior gas sensor of gas detector from intaking inefficacy.)

1. The utility model provides a system that discernment and drainage were intake to gas circuit of pump suction type gas detector which characterized in that: comprises a buffer container (1), a first branch pipe (2) communicated with the buffer container is arranged at the top of the buffer container (1), a second branch pipe (3) communicated with the first branch pipe is arranged on the first branch pipe (2), three-way electromagnetic valves (4) are arranged on the first branch pipe (2) and the second branch pipe (3), one end of the first branch pipe (2) far away from the buffer container (1) is connected with a direct-current diaphragm pump (5), the air suction end of the direct-current diaphragm pump (5) is communicated with the other end of the second branch pipe (3), a water drainage and air inlet pipe (6) is connected onto the three-way electromagnetic valve (4) on the first branch pipe (2), a detection pipe (7) is connected onto the three-way electromagnetic valve (4) on the second branch pipe (3), one end of the detection pipe (7) far away from the three-way electromagnetic valve (4) is connected with a detection air chamber (8), a gas detector (9) is arranged on the detection air chamber (8), an exhaust port (10) is arranged on the detection air chamber (8), and a floater liquid level sensor (11) is arranged in the buffer container (1).

2. The system for identifying and draining water in a gas path of a pump-suction gas detector as claimed in claim 1, wherein: the gas detector (9) is an acousto-optic display detector.

3. The system for identifying and draining water in a gas path of a pump-suction gas detector as claimed in claim 1, wherein: the device is characterized by further comprising a single chip microcomputer (12), and the two three-way electromagnetic valves (4), the direct-current diaphragm pump (5), the gas detector (9) and the floater liquid level sensor (11) are electrically connected with the single chip microcomputer (12) respectively.

4. The system for identifying and draining water in a gas path of a pump-suction gas detector as claimed in claim 1, wherein: the bottom of the buffer container (1) is provided with a filter (13).

5. The method for identifying and draining water in the air path of the pump-suction type gas detector according to the claims 1-4, wherein the method comprises the following steps: the method comprises the following steps:

firstly, a normal inspiration detection process:

s1, the single chip microcomputer (12) communicates the buffer container (1) with the direct current diaphragm pump (5) through the three-way electromagnetic valve (4) on the first branch pipe (2), and communicates the direct current diaphragm pump (5) with the detection pipe (7) through the three-way electromagnetic valve (4) on the second branch pipe (3);

s2, when gas is detected, the single chip microcomputer (12) starts the direct-current diaphragm pump (5) to suck gas, and the gas is sent into the detection gas chamber (8) through the first branch pipe (2), the second branch pipe (3) and the detection pipe (7), the concentration of the gas is detected through the gas detector (9), and then the gas is discharged through the exhaust port (10) of the detection gas chamber (8);

secondly, water inlet identification and drainage process:

s1, the floater liquid level sensor (11) detects whether water enters the buffer container (1) in real time, and transmits a signal to the single chip microcomputer (12);

s2, when water enters the buffer container (1), the single chip microcomputer (12) closes and communicates the detection pipe (7) with the water drainage and air inlet pipe (6) by switching the two three-way electromagnetic valves (4);

and S3, starting the direct-current diaphragm pump (5) by the singlechip (12), extracting gas through the water discharging and air inlet pipe (6), blowing the gas into the buffer container (1) through the second branch pipe (3) and forcing a water path of the buffer container (1) to return.

Technical Field

The invention relates to the technical field of gas detection, in particular to a system and a method for gas path water inlet identification and water drainage of a pump-suction type gas detector.

Background

The pump suction type gas detection system is composed of a built-in gas pump, a gas circuit and a gas detector, a water inlet and drainage mechanism is generally not arranged on the gas detection gas circuit in the prior art, if accumulated water is encountered in the system, the gas pump can suck the gas detector, and an inner gas sensitive element of the gas detector is damaged.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a system and a method for identifying and draining water in a gas path of a pump-suction type gas detector.

In order to achieve the purpose, the invention provides the following technical scheme:

a gas path water inlet identification and drainage system of a pump-suction type gas detector comprises a buffer container, the top of the buffer container is provided with a first branch pipe communicated with the buffer container, the first branch pipe is provided with a second branch pipe communicated with the first branch pipe, the first branch pipe and the second branch pipe are both provided with three-way electromagnetic valves, one end of the first branch pipe far away from the buffer container is connected with a direct-current diaphragm pump, the suction end of the direct current diaphragm pump is communicated with the other end of the second branch pipe, the three-way electromagnetic valve on the first branch pipe is connected with a drainage and air inlet pipe, the three-way electromagnetic valve on the second branch pipe is connected with a detection pipe, one end of the detection pipe far away from the three-way electromagnetic valve is connected with a gas chamber to be detected, the gas detection device is characterized in that a gas detector is arranged on the detection gas chamber, an exhaust port is arranged on the detection gas chamber, and a floater liquid level sensor is arranged in the buffer container.

Preferably, the gas detector is an acousto-optic display detector.

Preferably, the device also comprises a single chip microcomputer, and the two three-way electromagnetic valves, the direct-current diaphragm pump, the gas detector and the floater liquid level sensor are respectively and electrically connected with the single chip microcomputer.

Preferably, the bottom of the buffer container is provided with a filter.

The invention solves another problem of providing a method for identifying and draining water in a gas path of a pump-suction type gas detector, which comprises the following steps:

firstly, a normal inspiration detection process:

s1, the single chip microcomputer communicates the buffer container with the direct-current diaphragm pump through a three-way electromagnetic valve on the first branch pipe, and communicates the direct-current diaphragm pump with the detection pipe through a three-way electromagnetic valve on the second branch pipe;

s2, when gas is detected, the single chip microcomputer starts the direct-current diaphragm pump to suck gas, the gas is sent into the detection gas chamber through the first branch pipe, the second branch pipe and the detection pipe, the concentration of the gas is detected through the gas detector, and then the gas is discharged through the exhaust port of the detection gas chamber;

secondly, water inlet identification and drainage process:

s1, detecting whether water enters the buffer container or not in real time by the float liquid level sensor, and transmitting a signal to the single chip microcomputer;

s2, when water enters the buffer container, the single chip microcomputer seals and communicates the detection pipe with the water drainage and air inlet pipe by switching two three-way electromagnetic valves;

and S3, the single chip microcomputer starts the direct-current diaphragm pump, gas is pumped through the water discharging and air inlet pipe, and the gas is blown into the buffer container through the second branch pipe and forces the water path of the buffer container to return.

Compared with the prior art, the invention provides a system and a method for identifying and draining water in a gas path of a pump-suction type gas detector, which have the following beneficial effects:

this scheme is through setting up float level sensor on gaseous survey gas circuit and whether there is ponding in can real-time detection buffer container, and when water, the mutually supporting of rethread three solenoid valve, direct current diaphragm pump and drainage intake pipe discharges ponding, realizes liquid automatic identification and exhaust function, prevents effectively that the interior gas sensor of gas detector from intaking inefficacy.

Drawings

FIG. 1 is a system diagram of the present invention;

FIG. 2 is a guide diagram of a normal inspiration detection process of the present invention;

FIG. 3 is a flow direction diagram of the water inlet identification and drainage flow of the present invention.

The reference numbers in the figures illustrate:

1. a buffer container; 2. a first branch pipe; 3. a second branch pipe; 4. a three-way electromagnetic valve; 5. a flow diaphragm pump; 6. a drainage air inlet pipe; 7. a detection tube; 8. detecting the air chamber; 9. a gas detector; 10. an exhaust port; 11. a float level sensor; 12. a single chip microcomputer; 13. and (3) a filter.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

Referring to fig. 1, a system for identifying and draining water in a gas path of a pump-suction gas detector comprises a buffer container 1, a first branch pipe 2 communicated with the buffer container 1 is arranged at the top of the buffer container 1, a second branch pipe 3 communicated with the first branch pipe 2 is arranged on the first branch pipe 2, three-way electromagnetic valves 4 are arranged on the first branch pipe 2 and the second branch pipe 3, one end of the first branch pipe 2 far away from the buffer container 1 is connected with a direct-current diaphragm pump 5, the air suction end of the direct-current diaphragm pump 5 is communicated with the other end of the second branch pipe 3, a water drainage and air inlet pipe 6 is connected with the three-way electromagnetic valve 4 on the first branch pipe 2, a detection pipe 7 is connected with the three-way electromagnetic valve 4 on the second branch pipe 3, one end of the detection pipe 7 far away from the three-way electromagnetic valve 4 is connected with a gas chamber 8 to be detected, a gas detector 9 is arranged on the detection gas chamber 8, an air outlet 10 is arranged on the detection gas chamber 8, a float liquid level sensor 11 is arranged in the buffer container 1, the device further comprises a single chip microcomputer 12, and the two three-way electromagnetic valves 4, the direct-current diaphragm pump 5, the gas detector 9 and the floater liquid level sensor 11 are electrically connected with the single chip microcomputer 12 respectively.

In addition, the gas detector 9 is an acousto-optic display detector, when the gas detector 9 detects that the measured gas exceeds a set value, an alarm prompt can be given, and the bottom of the buffer container 1 is provided with a filter 13 to prevent impurities from entering the buffer container 1.

Referring to fig. 2-3, a method for identifying and draining water in a gas path of a pump-type gas detector includes the following steps:

firstly, a normal inspiration detection process:

s1, the single chip microcomputer 12 communicates the buffer container 1 with the direct current diaphragm pump 5 through the three-way electromagnetic valve 4 on the first branch pipe 2, and communicates the direct current diaphragm pump 5 with the detection pipe 7 through the three-way electromagnetic valve 4 on the second branch pipe 3;

s2, when gas is detected, the single chip microcomputer 12 starts the direct-current diaphragm pump 5 to suck gas, and the gas is sent into the detection gas chamber 8 through the first branch pipe 2, the second branch pipe 3 and the detection pipe 7, the concentration of the gas is detected through the gas detector 9, and then the gas is discharged through the exhaust port 10 of the detection gas chamber 8;

secondly, water inlet identification and drainage process:

s1, detecting whether water is fed into the buffer container 1 in real time by the float liquid level sensor 11, and transmitting a signal to the single chip microcomputer 12;

s2, when water enters the buffer container 1, the single chip microcomputer 12 seals the detection pipe 7 and communicates with the water drainage and air inlet pipe 6 by switching the two three-way electromagnetic valves 4;

s3, the single chip microcomputer 12 starts the direct current diaphragm pump 5, gas is pumped through the water discharging and air inlet pipe 6, and is blown into the buffer container 1 through the second branch pipe 3 and forces the water path of the buffer container 1 to return, so that the gas is prevented from entering the detection air chamber 8.

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.