CN211825951U

CN211825951U - Passive self-suction type methane portable instrument

Info

Publication number: CN211825951U
Application number: CN202020417404.1U
Authority: CN
Inventors: 刘勇; 范力通; 黄文楠
Original assignee: Jilin Shengyida Technology Co ltd
Current assignee: Jilin Shengyida Technology Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-10-30
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a portable appearance of passive formula methane of inhaling, include: the casing, the sensor probe, self-moving piston and one-way admission valve, be equipped with air chamber and air flue in the casing, the sensor probe is located the air chamber, air chamber and outside intercommunication, the one end and the air chamber intercommunication of air flue, self-moving piston sliding connection is at the other end of air flue, one-way admission valve sets up on the air flue, when using, when the carrier walks about, the self-moving piston can slide in the air flue, when the self-moving piston moves outward in the air flue, one-way admission valve opens, in order to inhale the air chamber with the outside gas, test probe can detect the methane concentration in the gas, it removes to need not extra power and drive the self-moving piston, can inhale the air chamber with the gas, consequently, can be applicable to the operation environment of no wind flow or weak wind flow under.

Description

Passive self-suction type methane portable instrument

Technical Field

The utility model relates to a methane detector technical field, in particular to portable appearance of passive formula methane of inhaling.

Background

When the underground operation of a coal mine is carried out, methane needs to be detected so as to ensure the safety of the underground operation.

At present, methane detection is mainly carried out through a diffusion type methane portable instrument or an electric pump suction type portable gas analyzer, but the diffusion type methane portable instrument needs to enter a sensor collection air chamber through air flow to collect the methane gas concentration of the surrounding environment, and when the surrounding environment gas enters the air chamber in a windless area or a weak wind area and is little or can not enter the air chamber, the collected surrounding gas methane concentration value is inaccurate; when the electric pump suction type portable gas analyzer operates, an electric spark is possibly generated by a motor, and potential safety hazards of methane detonation exist, so that the electric pump suction type portable gas analyzer is not suitable for underground coal mines.

Therefore, how to provide a portable methane meter which can be used in a no-wind area or a weak-wind area is a technical problem which needs to be solved by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a passive self-priming methane portable instrument, which can detect the methane concentration value contained in the ambient gas in the windless area or the weak wind area.

In order to achieve the above object, the utility model provides a following technical scheme:

a passive self-priming methane portable instrument comprising: casing, sensor probe, self-moving piston and one-way admission valve, be equipped with air chamber and air flue in the casing, the sensor probe is located in the air chamber for detect methane concentration, the one end of air flue with the air chamber intercommunication, self-moving piston sliding connection is in the other end of air flue, one-way admission valve sets up on the air flue, the self-moving piston is in when the air flue is inside and outside to move, one-way admission valve opens, so that inhale the external gas in the air chamber.

Preferably, the device further comprises a free hammer, wherein the upper end of the free hammer is hinged in the shell, and the side part of the lower end of the free hammer is connected with the piston.

Preferably, two air passages communicated with the air chamber are arranged in the shell, each air passage is provided with one-way air inlet valve, and the side part of the lower end of the free hammer is provided with one piston which is in sliding connection with the lower end of the air passage.

Preferably, a one-way exhaust valve is further included in communication with the air passage.

Preferably, the methane concentration monitoring device further comprises a data processor and a display, wherein the data processor is connected with the sensor probe, the display is connected with the data processor, and the display is used for displaying the methane concentration data processed by the data processor.

Preferably, the air passage is an air passage integrally formed in the housing or an independent air passage fixed in the housing.

Compared with the prior art, the technical scheme has the following advantages:

the utility model provides a portable appearance of passive formula methane of inhaling, include: the casing, the sensor probe, self-moving piston and one-way admission valve, be equipped with air chamber and air flue in the casing, the sensor probe is located the air chamber, air chamber and outside intercommunication, the one end and the air chamber intercommunication of air flue, self-moving piston sliding connection is at the other end of air flue, one-way admission valve sets up on the air flue, when using, when the carrier walks about, the self-moving piston can slide in the air flue, when the self-moving piston moves outward in the air flue, one-way admission valve opens, in order to inhale the air chamber with the outside gas, test probe can detect the methane concentration in the gas, it removes to need not extra power and drive the self-moving piston, can inhale the air chamber with the gas, consequently, can be applicable to the operation environment of no wind flow or weak wind flow under.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a passive self-suction type methane portable instrument according to an embodiment of the present invention;

fig. 2 is a schematic view of the working principle of a passive self-priming methane portable instrument according to an embodiment of the present invention.

The reference numbers are as follows:

1 is a shell, 2 is an air chamber, 3 is a sensor probe, 4 is an air passage, 5 is a one-way air inlet valve, 6 is a display, 7 is a piston, 8 is a free hammer, and 9 is a one-way exhaust valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a passive self-priming methane portable device according to an embodiment of the present invention; fig. 2 is a schematic view of the working principle of a passive self-priming methane portable instrument according to an embodiment of the present invention.

The embodiment of the utility model provides a portable appearance of passive formula methane of inhaling, include: casing 1, sensor probe 3, self-moving piston 7 and one-way admission valve 5, be equipped with air chamber 2 and air flue 4 in the casing 1, sensor probe 3 is located air chamber 2, air chamber 2 and outside intercommunication, the one end and the air chamber 2 intercommunication of air flue 4, self-moving piston 7 sliding connection is at the other end of air flue 4, one-way admission valve 5 sets up on air flue 4, when using, when carrying personnel walk about, self-moving piston 7 can slide in air flue 4, when self-moving piston 7 moves outside in air flue 4, one-way admission valve 5 opens, in order to inhale air chamber 2 with the outside gas, test probe can detect the methane concentration in the gas, it removes to need not extra power to drive self-moving piston 7, can inhale in the air chamber 2 with the gas, consequently, can be applicable to the operation environment of no leeward or weak leeward in the mine.

Further, still include free hammer 8, the upper end of free hammer 8 articulates in casing 1, and the lateral part of lower extreme is connected with piston 7, produces the motion when carrying personnel to walk, and the free hammer 8 of motion drives piston 7 motion to lead to the atmospheric pressure reduction in the air flue 4 between one-way admission valve 5 and the piston 7, thereby open one-way admission valve 5, and then form mobile air current, finally make gas by being inhaled in the air chamber 2.

Specifically, be equipped with two air flues 4 with air chamber 2 intercommunication in the casing 1, all be provided with a one-way admission valve 5 on each air flue 4, the lateral part of free hammer 8 lower extreme respectively sets up one with 4 lower extreme sliding connection's of air flue piston 7, through two air flues 4, can realize the purpose of breathing in succession to guarantee data measurement's accuracy.

Further, a one-way exhaust valve 9 is included in communication with the air passage 4, the one-way exhaust valve 9 opening as the piston 7 moves toward the air passage 4, thereby exhausting the remainder between the one-way intake valve 5 and the piston 7.

Furthermore, the device also comprises a data processor and a display 6, wherein the data processor is connected with the sensor probe 3, the display 6 is connected with the data processor, the display 6 is used for displaying the methane concentration data processed by the data processor, specifically, the data processor comprises a CPU, a signal acquisition amplifying circuit and a signal receiving conditioning circuit, the CPU is connected with an instrument keyboard so as to facilitate a user to input a detection instruction, the CPU is also connected with the sensor probe 3 through a sensor driving circuit, the CPU controls the sensor driving circuit to enable the sensor probe 3 to work, the signal acquisition amplifying circuit sends an acquired signal to the signal receiving conditioning circuit and then sends the acquired signal to the CPU for analog-to-digital conversion, the converted data is operated and processed, and finally the data is displayed through the display 6, wherein the display 6 can be an LCD screen, and in addition, the components can be powered through a charging and discharging battery module, so as to meet the long-time working index.

In addition, the air duct 4 may be the air duct 4 integrally formed in the housing 1 or the independent air duct 4 fixed in the housing 1, and the distribution mode and material of the air duct 4 may be selected according to actual situations, which is not limited in this embodiment.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above is to the utility model provides a passive from inhaling formula methane portable instrument introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a portable appearance of passive self-priming methane which characterized in that includes: casing, sensor probe, self-moving piston and one-way admission valve, be equipped with air chamber and air flue in the casing, the sensor probe is located in the air chamber for detect methane concentration, the one end of air flue with the air chamber intercommunication, self-moving piston sliding connection is in the other end of air flue, one-way admission valve sets up on the air flue, the self-moving piston is in when the air flue is inside and outside to move, one-way admission valve opens, so that inhale the external gas in the air chamber.

2. The passive self-priming methane portable instrument according to claim 1, further comprising a free hammer, the upper end of which is hinged inside the housing, the side of the lower end being connected to the piston.

3. The passive self-priming portable methane instrument according to claim 2, wherein two air passages are provided in the housing and communicate with the air chamber, each air passage is provided with one of the one-way air intake valves, and the side portion of the lower end of the free hammer is provided with one of the pistons slidably connected to the lower end of the air passage.

4. The passive self-priming methane portable instrument according to claim 3, further comprising a one-way vent valve in communication with the air passageway.

5. The passive self-priming methane portable instrument according to any one of claims 1 to 4, further comprising a data processor and a display, wherein the data processor is connected with the sensor probe, the display is connected with the data processor, and the display is used for displaying the methane concentration data processed by the data processor.

6. The passive self-priming methane portable instrument according to claim 5, wherein the air passage is an air passage integrally formed in the housing or an independent air passage fixed in the housing.