阅读说明：本技术 一种用于盾构机人仓气体检测的装置及检测方法 (Device and method for detecting gas in shield robot cabin ) 是由 阚龙 张满容 何奇 卢刘扬 陈传武 于 2020-11-26 设计创作，主要内容包括：本发明提供一种用于盾构机人仓气体检测的装置及检测方法,用于盾构机人仓气体检测的装置包括：装置器件、安装支架、支架固定安装板和箱体,所述装置器件包括卡套直通球阀、过滤减压阀、空气干燥过滤筒、洁净气体过滤器、卡套三通球阀、玻璃转子流量计、卡套连接型针阀、典型气体探测器件等部件。本发明通过过滤减压阀调定人仓输出被测气体压力和流量满足探测器检测要求后,探测器会连续自动检测人仓输出气体中一氧化碳、氧气、二氧化碳、甲烷、硫化氢的质量模拟量,使盾构机人仓作业环境中有害气体实时连续自动监控,有利于作业人员人身安全,降低作业风险。(The invention provides a device and a method for detecting gas in a shield machine robot cabin, wherein the device for detecting gas in the shield machine robot cabin comprises the following steps: the device comprises a clamping sleeve direct-connection ball valve, a filtering pressure reducing valve, an air drying filter cylinder, a clean gas filter, a clamping sleeve three-way ball valve, a glass rotor flow meter, a clamping sleeve connection type needle valve, a typical gas detection device and the like. According to the invention, after the pressure and the flow of the gas output by the man-made cabin and detected by the filter pressure reducing valve are set to meet the detection requirements of the detector, the detector can continuously and automatically detect the quality analog quantity of carbon monoxide, oxygen, carbon dioxide, methane and hydrogen sulfide in the gas output by the man-made cabin, so that harmful gas in the operation environment of the shield machine man-made cabin can be continuously and automatically monitored in real time, the personal safety of operators is facilitated, and the operation risk is reduced.)

1. An apparatus for shield tunneling robot warehouse gas detection, comprising: the device comprises a device part, a mounting bracket, a bracket fixing mounting plate (15) and a box body, and is characterized in that the device part comprises a ferrule straight ball valve, a filtering and reducing valve (4), an air drying filter cartridge (5), a clean gas filter (6), a ferrule three-way ball valve (7), a glass rotameter (8) and a ferrule connecting type needle valve (2); the clamping sleeve straight-through ball valve comprises a first clamping sleeve straight-through ball valve (1) and a second clamping sleeve straight-through ball valve (14) which are respectively communicated with the man bin and the auxiliary bin; the first ferrule straight-through ball valve (1) and the second ferrule straight-through ball valve (14) are connected in parallel, then are sequentially connected with a filtering and reducing valve (4), an air drying filter cylinder (5) and a clean gas filter (6), and then are connected with a first tube of a ferrule three-way ball valve (7), a second tube of the ferrule three-way ball valve (7) is connected with a glass rotameter (8), a typical gas detection device is provided with an exhaust port; a pressure gauge (3) is arranged between the glass rotameter (8) and the ferrule three-way ball valve (7); one end of the cutting sleeve connection type needle valve (2) is connected with a second port of the cutting sleeve tee-joint ball valve (7), the other end of the cutting sleeve connection type needle valve is connected with an exhaust port, and the cutting sleeve connection type needle valve (2) and the filtering and reducing valve (4) are used for adjusting the gas flow and pressure of the human cabin gas detection device system; the third tee of the cutting sleeve tee ball valve (7) is a standard gas inlet; the device is fixed on a support fixing and mounting plate (15) through the mounting support by screws, and the support fixing and mounting plate (15) is placed in the box body.

2. The shield tunneling machine warehouse gas detection device according to claim 1, wherein the typical gas detection means comprises a carbon monoxide detector (9), an oxygen detector (10), a carbon dioxide detector (11), a methane detector (12), and a hydrogen sulfide detector (13), and the carbon monoxide detector (9), the oxygen detector (10), the carbon dioxide detector (11), the methane detector (12), and the hydrogen sulfide detector (13) are sequentially connected.

3. The device for detecting the gas in the shield tunneling machine man-made cabin according to claim 1, wherein the first sleeve through ball valve (1) and the second sleeve through ball valve (14) are provided with micro switches for controlling the detection of the gas in the man-made cabin.

4. The device for shield tunneling machine warehouse gas detection according to claim 1, wherein the devices of the device are connected through a precision seamless steel pipe and a stainless steel bayonet joint.

5. The device for shield tunneling robot warehouse gas detection according to claim 1, characterized in that the device is connected with a mounting bracket, and the mounting bracket is connected with a bracket fixing mounting plate (15) through screws.

6. The detection method of the device for shield machine cabin gas detection according to any one of claims 1-5, characterized by comprising the following steps: s1, opening the ferrule three-way ball valve (7) at the right lower conduction position, calibrating a typical gas detector by using corresponding standard gas, and setting an alarm value; s2, opening the cutting sleeve connecting type needle valve (2), opening the cutting sleeve three-way ball valve at the upper and right conducting positions, and opening the cutting sleeve straight-way ball valve; s3, adjusting the filtering pressure reducing valve (4) and the cutting sleeve connection type needle valve (2), and simultaneously observing the pressure gauge (3) and the glass rotameter (8) to enable the pressure and the flow of the gas output by the cabin to meet the detection requirements of a detector; s4, the detector continuously and automatically detects the concentration values of different gases in the gas output by the people cabin and compares the concentration values with a set alarm value; and S5, when the gas concentration exceeds the standard, the corresponding detector gives an alarm, and the alarm signal is transmitted to the shield tunneling machine operation room and the ground monitoring room.

Technical Field

The invention belongs to the field of shield construction, and particularly relates to a device and a method for detecting gas in a shield robot cabin.

Background

The long-distance tunneling process of the shield tunneling machine is always accompanied by the abrasion of the cutter or the falling of the cutter, so that the cutting performance of the cutter head is seriously influenced, and the tunneling speed of the shield tunneling machine is reduced. In order to ensure the safety and efficiency of construction, the warehouse needs to be opened for tool changing.

However, the environment in the warehouse is complicated and severe, and the tool changing process is often accompanied by fire operation, the constructors are in a closed space, various harmful gases are difficult to discharge, the warehouse-entering operators are easy to be poisoned by gases, fire accidents occur in the operation process, and the risk of missing detection and false detection exists in manual detection.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a device and a method for detecting gas in a shield robot cabin. The system can realize real-time continuous automatic monitoring of harmful gas in the environment of the robot cabin pressure opening operation, is favorable for ensuring the personal safety of the personnel operating under pressure to open the cabin, and reduces the operation risk.

In one aspect, the present invention provides a device for detecting gas in a shield robot cabin, comprising: the device comprises a device part, a mounting bracket, a bracket fixing mounting plate and a box body, wherein the device part comprises a clamping sleeve straight-through ball valve, a filtering pressure reducing valve, an air drying filter cylinder, a clean gas filter, a clamping sleeve three-way ball valve, a glass rotameter and a clamping sleeve connection type needle valve; the clamping sleeve straight ball valve comprises a first clamping sleeve straight ball valve and a second clamping sleeve straight ball valve which are respectively communicated with the manned cabin and the auxiliary cabin; the first ferrule straight-through ball valve and the second ferrule straight-through ball valve are connected in parallel, and then are sequentially connected with a filtering and reducing valve, an air drying filter cylinder and a clean gas filter, and then are connected with the first through of the ferrule three-way ball valve, the second through of the rear ferrule three-way ball valve is connected with a glass rotameter, a typical gas detection device is provided with an exhaust port; a pressure gauge is arranged between the glass rotameter and the ferrule three-way ball valve; the cutting sleeve connection type needle valve is connected with the glass rotameter in parallel, one end of the cutting sleeve connection type needle valve is connected with the second port of the cutting sleeve tee-joint ball valve, the other end of the cutting sleeve connection type needle valve is connected with the exhaust port, and the cutting sleeve connection type needle valve and the filtering pressure reducing valve are used for adjusting the gas flow and the pressure of the human cabin gas detection device system; the third tee of the cutting sleeve tee ball valve is a standard gas inlet; the device is fixed on a support fixing and mounting plate through the mounting support by screws, and the support fixing and mounting plate is placed in the box body.

Further, the typical gas detection device comprises a carbon monoxide detector, an oxygen detector, a carbon dioxide detector, a methane detector and a hydrogen sulfide detector, wherein the carbon monoxide detector, the oxygen detector, the carbon dioxide detector, the methane detector and the hydrogen sulfide detector are sequentially connected.

Furthermore, the first clamping sleeve direct-connection ball valve and the second clamping sleeve direct-connection ball valve are provided with microswitches for controlling gas detection in the man cabin.

Furthermore, the devices of the device are connected through a precision seamless steel pipe and a stainless steel clamping sleeve joint.

Furthermore, the device is connected with a mounting bracket through screws, and the mounting bracket is connected with a bracket fixing and mounting plate through screws.

On the other hand, the invention provides a detection method of a shield machine robot cabin gas detection device, which comprises the following steps: s1, opening the ferrule three-way ball valve 7 at a right lower conduction position, calibrating a typical gas detector by using corresponding standard gas, and setting an alarm value; s2, opening the cutting sleeve connection type needle valve 2, opening the cutting sleeve three-way ball valve 7 at the upper and right conduction positions, and finally opening the cutting sleeve straight ball valve; s3, adjusting the filtering pressure reducing valve 4 and the cutting sleeve connection type needle valve 2, and simultaneously observing the pressure gauge 3 and the glass rotameter 8 to enable the pressure and the flow of the gas output by the cabin to be detected to meet the detection requirements of a detector; s4, the detector starts to continuously and automatically detect the concentration values of carbon monoxide, oxygen, carbon dioxide, methane and hydrogen sulfide in the gas output by the human cabin, and compares the concentration values with a set alarm value; and S5, when the detected gas shows that the concentration of any gas exceeds the standard, the corresponding detector gives an alarm, and meanwhile, the alarm signal can be transmitted to a shield machine operation room and a ground monitoring room through the shield machine electrical system.

The invention has the beneficial effects that:

according to the invention, after the pressure and the flow of the gas output by the human cabin and detected by the filter pressure reducing valve are set to meet the detection requirements of the detector, the detector can continuously and automatically detect the quality analog quantity of carbon monoxide, oxygen, carbon dioxide, methane and hydrogen sulfide in the gas output by the human cabin, the detector can compare with the set alarm value, the detection value is higher than the alarm value, the detector sends out an alarm signal, and the alarm signal can be transmitted to the shield machine operation room and the ground monitoring room through the shield machine electrical system, so that the harmful gas in the shield machine cabin pressure cabin opening operation environment can be continuously and automatically monitored in real time, the personal safety of the operators in pressure cabin opening operation can be ensured, and the operation risk can be.

Drawings

FIG. 1 is a schematic diagram of a people compartment gas detection apparatus of the present invention;

FIG. 2 is a view showing the arrangement and installation of the components of the human cabin gas detecting apparatus of the present invention;

FIG. 3 is a flow chart of the detection method of the present invention;

fig. 4 is a box body of the people cabin gas detection device of the invention.

Reference numerals: the device comprises a straight ball valve with a clamping sleeve, a needle valve with a clamping sleeve connection type 2, a pressure gauge 3, a pressure reducing valve 4, an air drying filter cartridge 5, a clean gas filter 6, a three-way ball valve with a clamping sleeve 7, a glass rotameter 8, a carbon monoxide gas detector 9, an oxygen detector 10, a carbon dioxide gas detector 11, a methane gas detector 12, a hydrogen sulfide gas detector 13, a straight ball valve with a clamping sleeve 14 and a support fixed mounting plate 15.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

As shown in fig. 1, the present invention provides a device for gas detection in a shield robot cabin, comprising: the device comprises a device part, a mounting bracket, a bracket fixing mounting plate 15 and a box body, wherein the device part comprises a ferrule straight-through ball valve, a filtering pressure reducing valve 4, an air drying filter cylinder 5, a clean gas filter 6, a ferrule three-way ball valve 7, a glass rotameter 8 and a ferrule connection type needle valve 2; the clamping sleeve straight ball valve comprises a first clamping sleeve straight ball valve 1 and a second clamping sleeve straight ball valve 14 which are respectively communicated with the man bin and the auxiliary bin; the first ferrule straight-through ball valve 1 and the second ferrule straight-through ball valve 14 are connected in parallel, then are sequentially connected with a filtering and pressure reducing valve 4, an air drying filter cylinder 5 and a clean gas filter 6, and then are connected with a first through of a ferrule three-way ball valve 7, a second through of the rear ferrule three-way ball valve 7 is connected with a glass rotameter 8, a typical gas detection device is arranged, and an exhaust port is arranged at the rear; the cutting sleeve connection type needle valve 2 is connected with the glass rotameter 8 in parallel, one end of the cutting sleeve connection type needle valve is connected with a second port of the cutting sleeve three-way ball valve 7, the other end of the cutting sleeve connection type needle valve is connected with an exhaust port, and the cutting sleeve connection type needle valve 2 and the filtering and reducing valve 4 are used for adjusting the gas flow and the pressure of a system of the human cabin gas detection device; the third tee of the cutting sleeve tee ball valve 7 is a standard gas inlet; the device is fixed on the support fixing and mounting plate 15 through the mounting support by screws, and the support fixing and mounting plate 15 is placed in the box body.

A pressure gauge 3 is arranged between the glass rotameter 8 and the ferrule three-way ball valve 7; the typical gas detection device comprises a carbon monoxide detector 9, an oxygen detector 10, a carbon dioxide detector 11, a methane detector 12 and a hydrogen sulfide detector 13, wherein the carbon monoxide detector 9, the oxygen detector 10, the carbon dioxide detector 11, the methane detector 12 and the hydrogen sulfide detector 13 are sequentially connected.

The first clamping sleeve direct ball valve 1 and the second clamping sleeve direct ball valve 14 are provided with micro switches, and the micro switches are used for controlling gas detection in the man-made storehouse.

The devices of the device are connected through a precision seamless steel pipe and a stainless steel clamping sleeve joint so as to prevent gas from leaking and ensure the safety of the device.

The device and the mounting bracket are connected with the bracket fixing and mounting plate 15 through screws.

As shown in fig. 2 and fig. 3, the invention provides a detection method of a device for shield machine robot cabin gas detection, which comprises the following steps:

s1, opening the ferrule three-way ball valve 7 at the right lower conducting position, calibrating the carbon monoxide detector 9, the oxygen detector 10, the carbon dioxide detector 11, the methane detector 12 and the hydrogen sulfide detector 13 respectively by using corresponding standard gas through the standard gas inlet of the ferrule three-way ball valve 7, setting an alarm value, wherein the detected gas alarm value data is provided by a detector manufacturer, and the specific data is as follows:

TABLE 1 associated gas detection alarm values

Detecting gas type	High alarm value	Low alarm value
			Hydrogen sulfide	15μmol/mol	10μmol/mol
Methane	50％LEL	20％LEL
			Carbon dioxide	2000μmol/mol	1500μmol/mol
Oxygen gas	23.5％VOL	19.5％VOL
			Carbon monoxide	200μmol/mol	35μmol/mol

S2, opening the cutting sleeve connecting type needle valve 2, opening the cutting sleeve three-way ball valve 7 at the upper and right conducting positions, and finally opening the first cutting sleeve straight-through ball valve 1 and the second cutting sleeve straight-through ball valve 14 to allow gas in the man cabin to enter;

s3, adjusting the filtering pressure reducing valve 4 and the cutting sleeve connection type needle valve 2, and simultaneously observing the pressure gauge 3 and the glass rotameter 8 to enable the pressure and the flow of the gas output by the cabin to be detected to meet the detection requirements of a detector;

s4, the detector starts to continuously and automatically detect the concentration values of carbon monoxide, oxygen, carbon dioxide, methane and hydrogen sulfide gas in the gas output by the human cabin, and compares the concentration values with a set alarm value;

and S5, when the concentration of any gas in the gas is found to exceed the standard, the corresponding detector gives an alarm, and meanwhile, the alarm signal is transmitted to the shield tunneling machine operation room and the ground monitoring room through the shield tunneling machine electrical system.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.