CN217273579U

CN217273579U - Gas concentration detection device capable of changing gas flow velocity

Info

Publication number: CN217273579U
Application number: CN202220911368.3U
Authority: CN
Inventors: 郭晨华; 刘潇潇; 兰国庆; 王磊; 魏萌萌; 肖鹏
Original assignee: Xian University of Science and Technology
Current assignee: Xian University of Science and Technology
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-08-23
Anticipated expiration: 2032-04-19

Abstract

The utility model relates to a gas concentration detection technical field, concretely relates to can change gas concentration detection device of gas flow rate, it includes the box, aspiration pump, gas concentration detection appearance and measurement probe rod, its characterized in that have been placed in the box: the gas extraction pump is provided with a first gas inlet and a first gas outlet, the first gas inlet is detachably connected with a measurement probe rod, the first gas outlet is connected with a tee joint through a gas pipe, a second port of the tee joint is connected with a gas concentration detector through a gas pipe, a third port of the tee joint is connected with a transparent gas bag, calcium oxide is placed in the transparent gas bag, and the top of the gas extraction pump is provided with a speed regulation knob, a barometer and a flow rate meter; the beneficial effects are as follows: the rotating speed of the motor is changed by adjusting a speed adjusting knob on the air extracting pump, so that the air extracting flow speed is adjusted, and the phenomenon that the equipment is damaged due to overlarge flow speed is avoided; the calcium oxide transparent air bag is used for absorbing water vapor and hydrogen sulfide gas in the gas, so that the accuracy of detection data is ensured.

Description

Gas concentration detection device capable of changing gas flow velocity

Technical Field

The utility model relates to a gas concentration detection technical field, concretely relates to can change gas concentration detection device of gas velocity of flow.

Background

In the coal production process, gas is ubiquitous as a coal companion. The gas is colorless and tasteless, and can be adsorbed in the internal pore cracks of the coal body and also can be dissociated on the surface of the coal body. In the mining process, the gas concentration needs to be detected, and the gas concentration is prevented from being too high, so that the life safety of operating personnel is ensured. The existing gas concentration detection generally needs two persons for matching operation, which consumes manpower, and the detection of a high measuring point is not good due to overhigh height. In addition, the gas contains water vapor and hydrogen sulfide gas, which affects the accuracy of gas concentration detection. In addition, the current gas taking device can not adjust the gas flow rate, which can cause the gas flow rate to be too fast and influence the service life of the equipment.

Therefore, it is necessary to design a gas concentration detection device capable of changing the gas flow rate to solve these problems, so as to improve the accuracy and convenience of gas detection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can change gas flow rate's gas concentration detection device, it has solved among the prior art gas flow velocity uncontrollable and influence equipment life and how get rid of the problem of vapor and the hydrogen sulfide gas body among the gas.

In order to realize the purpose, the utility model provides a technical scheme does:

the utility model provides a can change gas concentration detection device of gas flow rate, includes box 19, aspiration pump 1, gas concentration detector 2 and measurement probe rod 3 have been placed in the box 19, its characterized in that: be equipped with first air inlet 7 and first exhaust port 8 on the aspiration pump 1, can dismantle on the first air inlet 7 and be connected with measurement probe rod 3, be connected with tee bend 10 through trachea 11 on the first exhaust port 8, the second port of tee bend 10 is connected with gas concentration detector 2 through trachea 11, the third port of tee bend 10 is connected with transparent air bag 9, calcium oxide has been placed in the transparent air bag 9, speed governing knob 4, barometer 5 and velocity of flow table 6 are installed at the top of aspiration pump 1.

The front end of the measurement probe rod 3 is provided with an air collecting port, and the rear end of the measurement probe rod 3 is connected with an air pipe connected with the first air inlet 7 through a nut.

A rubber sealing ring is arranged between the rear end of the measuring probe rod 3 and the air pipe at the first air inlet 7, so that air tightness is guaranteed.

The measuring probe rod 3 is made of hard steel.

And a second air inlet 12 is arranged on the gas concentration detector 2, and the second air inlet 12 is connected with a second port of the tee joint 10 through an air pipe 11.

The gas concentration detector 2 is provided with a display screen 13 and an indicator lamp 14.

A baffle 20 is arranged in the middle of the box body 19, a hole 21 is formed in the baffle 20, and the diameter of the hole 21 is the same as that of the air pipe 11. The baffle 20 divides the interior of the box 19 into a left part and a right part for respectively placing the air pump 1 and the gas concentration detector 2.

The box body 19 includes the box body itself and a box cover 22, and the inside of the box cover 22 is provided with the LED lamp 16.

The box body 19 and the box cover 22 are connected through an oblique supporting column 15, and the box cover 22 can be in an upright state through the oblique supporting column 15.

Spring structures 18 are respectively arranged on the front box plate and the rear box plate inside the box body 19, an air suction pump 1 and a gas concentration detector 2 are placed between the spring structures 18 of the front box plate and the rear box plate inside the box body 19, and the spring structures 18 are used for fixing the air suction pump 1 and the gas concentration detector 2 and preventing shaking.

The two sides of the box body 19 are provided with hand straps 17.

The speed regulating knob 4 can regulate the rotating speed of the motor so as to regulate the gas flow rate.

The transparent air bag 9 filled with calcium oxide is used for absorbing moisture and hydrogen sulfide gas in gas.

The cover upper LED lamp 16 is an explosion-proof lamp.

Compared with the prior art, the utility model discloses possess following advantage:

firstly, the rotating speed of the motor is changed by adjusting a speed adjusting knob on the air extracting pump, so that the air extracting flow speed is adjusted, and the phenomenon that the equipment is damaged due to overlarge flow speed is avoided.

And secondly, the calcium oxide transparent air bag is used for absorbing water vapor and hydrogen sulfide gas in the gas, so that the accuracy of detection data is ensured, and further reference is provided for gas control.

And simultaneously, the utility model discloses convenient to carry, the independent operation of one person of being convenient for has reduced the cost of labor under the accurate condition of assurance detection data, can make equipment life extension again, has good economic benefits, is fit for popularizing and applying.

Drawings

For a more clear understanding of the present invention, the present disclosure will be further described by reference to the drawings and illustrative embodiments, which are provided for illustration and are not to be construed as limiting the present disclosure.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the middle box body of the present invention;

shown in the figure: 1. the utility model provides a gas pump, 2, gas concentration detector, 3, measure probe rod, 4, speed governing knob, 5, barometer, 6, the velocity table, 7, first air inlet, 8, first exhaust port, 9, transparent air pocket, 10, tee bend, 11, trachea, 12, second air inlet, 13, display screen, 14, pilot lamp, 15, oblique support column, 16, LED explosion-proof lamp, 17, portable area, 18, spring, 19, the box, 20, the baffle, 21, the hole, 22, the case lid.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

Example 1

The utility model provides a can change gas concentration detection device of gas flow velocity, as shown in fig. 1, includes box 19, aspiration pump 1, gas concentration detector 2 and measurement probe rod 3 have been placed to in the box 19, its characterized in that: be equipped with first air inlet 7 and first exhaust port 8 on the aspiration pump 1, can dismantle on the first air inlet 7 and be connected with measurement probe rod 3, be connected with tee bend 10 through trachea 11 on the first exhaust port 8, the second port of tee bend 10 is connected with gas concentration detector 2 through trachea 11, the third port of tee bend 10 is connected with transparent air pocket 9, calcium oxide has been placed in the transparent air pocket 9, the transparent air pocket 9 that is equipped with calcium oxide is used for absorbing moisture and the hydrogen sulfide gas body in the gas. The top of the air pump 1 is provided with a speed regulation knob 4, a barometer 5 and a flow meter 6. The speed regulating knob 4 can regulate the rotating speed of the motor, so that the flow rate of gas is regulated. The speed regulating knob 4 can regulate the rotating speed of the motor, namely low, medium and high rotating speeds, so as to regulate the flow rate of gas. If the gas concentration in the hole is tested, considering that the gas concentration in the hole is higher, setting the flow velocity to be high; if the gas concentration around the hole is tested, the flow rate is set to be low or medium, and equipment damage caused by mismatching of the flow rate and the concentration is avoided.

The front end of the measurement probe rod 3 is provided with an air collecting port, and the rear end of the measurement probe rod 3 is connected with an air pipe connected with the first air inlet 7 through a nut. A rubber sealing ring is arranged between the rear end of the measuring probe rod 3 and the air pipe at the first air inlet 7, so that air tightness is guaranteed. The measuring probe rod 3 is made of hard steel. The length of the measuring probe rod 3 is 1m, and the diameter is 50 mm.

And a second air inlet 12 is arranged on the gas concentration detector 2, and the second air inlet 12 is connected with a second port of the tee joint 10 through an air pipe 11. The gas concentration detector 2 is provided with a display screen 13 and an indicator lamp 14. The cover upper LED lamp 16 is an explosion-proof lamp.

As shown in fig. 1, a baffle 20 is disposed in the middle of the box 19, a hole 21 is formed in the baffle 20, and the diameter of the hole 21 is the same as that of the air pipe 11. The baffle 20 divides the interior of the tank 19 into left and right parts for respectively accommodating the suction pump 1 and the gas concentration detector 2.

As shown in fig. 2, the box body 19 includes a box body itself and a box cover 22, and the LED lamp 16 is disposed inside the box cover 22. The box body 19 is connected with the box cover 22 through an oblique supporting column 15, and the box cover 22 can be in an upright state through the oblique supporting column 15.

As shown in fig. 1, spring structures 18 are respectively arranged on the front box plate and the rear box plate inside the box 19, an air suction pump 1 and a gas concentration detector 2 are placed between the spring structures 18 of the front box plate and the rear box plate inside the box 19, and the spring structures 18 are used for fixing the air suction pump 1 and the gas concentration detector 2 to prevent shaking. The two sides of the box body 19 are provided with hand straps 17.

Example 2

The utility model discloses a theory of operation does: when measuring gas concentration, at first, extend to measuring probe 3 to the region to be measured such as downthehole or hole week, then will measure probe and trachea and be connected, be connected to aspiration pump 1, open the switch of aspiration pump 1 and gas concentration detector 2 simultaneously, aspiration pump 1 works and draws gas into aspiration pump 1 through first air inlet 7 in and discharges through first exhaust port 8, moisture and hydrogen sulfide gas wherein can be got rid of to gas through calcium oxide, then through hose connection to second air inlet 12 to gas concentration detector 2, show gas concentration value in real time, if in concentration allowed range, then the green light is bright, if exceed allowed range, then the red light is bright, and trigger alarm instrument reports to the police.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a can change gas concentration detection device of gas flow rate, includes box (19), aspiration pump (1), gas concentration detection appearance (2) and measurement probe rod (3) have been placed in box (19), its characterized in that: be equipped with first air inlet (7) and first exhaust port (8) on aspiration pump (1), can dismantle on first air inlet (7) and be connected with measurement probe rod (3), be connected with tee bend (10) through trachea (11) on first exhaust port (8), the second port of tee bend (10) is connected with gas concentration detector (2) through trachea (11), the third port of tee bend (10) is connected with transparent air pocket (9), calcium oxide has been placed in transparent air pocket (9), speed governing knob (4), barometer (5) and velocity of flow table (6) are installed at the top of aspiration pump (1).

2. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: the front end of the measuring probe rod (3) is provided with an air collecting port, and the rear end of the measuring probe rod (3) is connected with an air pipe connected with the first air inlet (7) through a nut.

3. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: a rubber sealing ring is arranged between the rear end of the measuring probe rod (3) and the air pipe at the first air inlet (7) to ensure air tightness.

4. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: and a second air inlet (12) is arranged on the gas concentration detector (2), and the second air inlet (12) is connected with a second port of the tee joint (10) through an air pipe (11).

5. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: and a display screen (13) and an indicator lamp (14) are arranged on the gas concentration detector (2).

6. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: the middle part of the box body (19) is provided with a baffle (20), the baffle (20) is provided with a hole (21), and the diameter of the hole (21) is the same as that of the air pipe (11).

7. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: the box body (19) comprises a box body and a box cover (22), and the LED lamp (16) is arranged inside the box cover (22).

8. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: the box body (19) is connected with the box cover (22) through an oblique supporting column (15), and the box cover (22) can be in an upright state through the oblique supporting column (15).

9. The gas concentration detection device capable of changing the flow rate of gas according to claim 1, wherein: spring structures (18) are respectively arranged on the front box plate and the rear box plate inside the box body (19), and an air suction pump (1) and a gas concentration detector (2) are arranged between the spring structures (18) of the front box plate and the rear box plate inside the box body (19).