CN205400795U - Gas drainage pipe way environmental simulation device - Google Patents

Abstract

The utility model relates to a gas drainage pipeline environment simulation device, which comprises two vertical beams arranged at relative intervals, and one or more horizontally arranged gas pipelines are arranged between the two vertical beams, and the gas pipelines It is detachably connected with the vertical beam, and each gas pipeline is sealed at both ends, and three branch pipes are connected at one closed end of the gas pipeline, and an air extraction branch is provided at the other closed end. The exhaust branch pipe is connected with a vacuum pump; a plurality of branch pipes for connecting instruments are arranged on the side wall of the gas pipeline. The utility model can be used to simulate the working environment of the gas pipeline in the laboratory, and realize the study of the pressure change law inside the gas drainage pipe and the property change of the mixture of gas, coal dust and water through the measurement of precise measuring instruments Laws, etc., so that the relevant research on gas pipelines can be realized under safe conditions.

Description

Gas drainage pipeline environment simulation device

technical field

The utility model relates to a simulation device, in particular to a gas drainage pipeline environment simulation device.

Background technique

Coal mine gas extraction refers to the use of gas pumps or other drainage equipment to extract high volume fraction of gas in the coal seam, and then discharge the extracted high volume fraction gas to the ground or the mine's total return airway through a pipe network isolated from the roadway. Coal mine gas drainage is a fundamental measure to control coal mine gas, and gas leakage, water blockage and slag blockage in gas drainage pipelines are the main factors affecting the efficiency of gas drainage. At present, due to the complex situation and high degree of danger in coal mines, it is impossible to analyze the flow of gas, water and cinder in the drainage pipe network in detail.

Moreover, the actual working environment of the gas drainage pipeline also makes it difficult to carry out relevant research on the factors affecting the extraction efficiency in the drainage pipeline network in the underground environment: the coal mine gas drainage pipeline is installed and distributed in the coal mine roadway, and the length is determined by It depends on the actual situation; gas drainage is achieved by vacuum pumping, the air environment inside the entire pipeline is negative pressure, the negative pressure can reach -0.09MPa at the highest, and during the drainage process, the liquid water and coal slime in the coal rock formation are inevitable It flows into the discharge pipeline by its own weight and negative pressure; due to the temperature difference effect, the gaseous water in the pipeline will also condense into liquid water.

In addition, the normal laboratory environment cannot simulate the gas drainage pipeline environment through simple equipment. Therefore, currently there is basically no device capable of simulating the internal environment of the underground gas drainage network in coal mines.

Contents of the invention

In view of the above problems, the purpose of this utility model is to provide a gas drainage pipeline environment simulation device for studying the internal fluid situation of the network pipe in the gas drainage.

In order to achieve the above purpose, the utility model adopts the following technical solutions: a gas drainage pipeline environment simulation device, which is characterized in that it includes two vertical beams arranged at opposite intervals, and one or more vertical beams are arranged between the two vertical beams. A horizontally arranged gas pipeline, the gas pipeline is detachably connected to the vertical beam, each gas pipeline is sealed at both ends, and three branch pipes are connected to one closed end of the gas pipeline , the other closed end is provided with a gas extraction branch pipe, which is connected with a vacuum pump; a plurality of branch pipes for connecting instruments are arranged on the side wall of the gas pipeline.

A plurality of pairs of rams are arranged at intervals up and down on the two vertical beams, and each of the rams is slidably connected in a vertical chute on the vertical beams, and the vertical beams are evenly spaced up and down on each vertical beam. A plurality of pin holes are arranged, and the ram is connected with the pin holes through a pin; the gas pipeline is supported on a pair of the rams at the same height.

A lifting system is respectively arranged at the top of the two vertical beams, and each lifting system is connected to the gas pipeline through a lifting rope.

The number of the branch pipes on each gas pipeline is eight, two branch pipes are arranged at intervals on the upper side of the gas pipeline, and two branch pipes are arranged at intervals on the front side of the gas pipeline , four branch pipes are arranged at intervals on the lower side of the gas pipeline, wherein two of the four branch pipes located on the lower side of the gas pipeline are connected to the two branch pipes located on the upper side of the gas pipeline. The branch pipes are located relative to each other.

An arc-shaped groove is set on the top of the ram, and a bolt hole is respectively set on both sides of the arc-shaped groove; the gas pipeline is located in the arc-shaped groove of the ram and passes through a The semicircular steel hoop connected by the two bolt holes is fixed on the ram.

The lifting system adopts an electric hoist.

A pedestal is arranged at the bottom of each vertical beam, and four height-adjustable feet are arranged at the bottom of each pedestal.

Four first ring nails are arranged at equal intervals on the outside of the middle part of each vertical beam, and a second ring nail is respectively arranged at the four corners of each said base, and each first ring nail is passed through a stretcher. The tight steel cable is connected with a second ring nail.

A plug is sealed at the open end of each branch pipe.

Because the utility model adopts the above technical scheme, it has the following advantages: 1. The utility model can be used to simulate the working environment of the gas pipeline in the laboratory, and realize the research of the inside of the gas drainage pipe through the measurement of precise measuring instruments The law of the pressure change, the property change law of the mixture of gas, coal dust and water, etc., so that the relevant research on the gas pipeline can be realized under safe conditions. 2. The utility model can also be used in teaching, simulating and demonstrating the working process of the gas drainage system in the laboratory, so that students can better understand the content and related difficulties of gas drainage. 3. The utility model can also be used to simulate the radial environment of a coal mine before a gas drainage system needs to be established, and better optimize the design scheme of the gas drainage system.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic side view of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

As shown in Fig. 1 and Fig. 2, the utility model comprises two vertical beams 1 arranged at intervals, and a base 2 is fastened to the lower end of each vertical beam 1. A plurality of pairs of rams 3 are arranged at intervals up and down on the two vertical beams 1 , and each ram 3 is slidably connected in a vertical chute on the vertical beam 1 . A plurality of bolt holes are evenly arranged up and down on each vertical beam 1 , and the ram 3 stops at the predetermined height of the vertical beam 1 through a bolt hole passing through the vertical beam 1 and its own bolt. The utility model can set one or more gas pipelines 4 according to the experiment content, and the diameters of the gas pipelines 4 are different. Each gas pipeline 4 is supported on a pair of rams 3 at the same height. Both ends of the gas pipeline 4 are sealed, and one of the closed ends is connected with three branch pipes, which are the water inlet branch pipe 5, the coal dust addition branch pipe 6 and the pressure balance branch pipe 7; The air branch pipe 8 is connected with a vacuum pump 9 . Two branch pipes 10 are arranged at intervals on the upper side of the gas pipeline 4, two branch pipes 10 are arranged at intervals on the front side of the gas pipeline 4, and four branch pipes 10 are arranged at intervals on the lower side of the gas pipeline 4. Two of the four branch pipes 10 on the lower side are opposite to the two branch pipes 10 on the upper side of the gas pipeline 4 . These branch pipes 10 are used to connect water drains, water level gauges and pressure gauges, etc. The specific connection method depends on the content of the experiment. Generally speaking, the upper and lower pair of branch pipes 10 of the gas pipeline 4 are used to install the water level gauge. And the installation of pressure gauge only needs to occupy a branch pipe 10. A lifting system 11 is respectively arranged at the top of the two vertical beams 1, and each lifting system 11 is connected to the gas pipeline 4 through a lifting rope 12. In the experiment, the lifting system 11 is used to change the height of the gas pipeline 4 , when adjusting the height, the bolt connecting the ram 3 and the vertical beam 1 needs to be removed first, and when the gas pipeline 4 is lifted/lowered to a new height by the lifting system 11, the ram 3 and the vertical beam are connected again through the bolt 1 is connected, the gas pipeline 4 promptly stays at the new height.

In a preferred embodiment, an arc-shaped groove is arranged on the top of the ram 3, and a bolt hole is respectively arranged on both sides of the arc-shaped groove; the gas pipeline 4 is located in the arc-shaped groove of the ram 3 and passes through a A semicircular steel hoop (not shown) connected with the two bolt holes is fixed on the ram 3 .

In a preferred embodiment, a plurality of pulleys (not shown in the figure) are arranged at intervals on the edge of the ram 3 , and the pulleys are used to connect with the vertical slide groove of the vertical beam 1 .

In a preferred embodiment, the lifting system 11 adopts an electric hoist.

In a preferred embodiment, four ring nails are arranged at equal intervals on the outside of the middle part of each vertical beam 1, and correspondingly, one ring nail is respectively arranged at the four corners of the base 2, and each ring nail on the vertical beam 1 The nail is connected to a ring nail on the base 2 through a tight steel cable 13, which is used to increase the stability of the connection between the vertical beam 1 and the base 2.

In a preferred embodiment, four height-adjustable feet 14 are provided on the bottom of each base 2 .

In a preferred embodiment, a plug 15 is blocked at the open end of each branch pipe 10. In the experiment, the branch pipe 10 that is not equipped with instruments such as pressure gauge, water level gauge and water release device utilizes the plug 15 to carry out plugging .

When the utility model is in use, select the gas pipeline 4 with a size that meets the experimental requirements, lift the gas pipeline 4 to the required height, simulate the layout of the gas drainage pipeline, and pass water and coal dust through the water inlet branch pipes in proportion 5. The coal dust addition branch pipe 6 is introduced into the gas pipeline 4, and water and coal dust can also be mixed in proportion first, and then the sewage pump 16 is used to pump the gas pipeline 4 through the water inlet branch pipe 5; Negative pressure is realized in the road 4, and the pressure in the gate is set at the negative pressure value inside the coal mine gas drainage pipeline. In this way, the laboratory simulation of the underground gas drainage pipeline is realized. Various simulation experiments based on gas pipelines in this environment can be carried out by connecting external equipment.

The utility model is only described with the above-mentioned embodiment, and the structure, setting position and connection of each component can be changed to some extent. On the basis of the technical solution of the utility model, any improvement or equivalent transformation of individual components according to the principle of the utility model shall not be excluded from the protection scope of the utility model.

Claims (9)

1. A gas drainage pipeline environment simulation device, characterized in that: it comprises two vertical beams arranged at relative intervals, one or more horizontally arranged gas pipelines are set between the two vertical beams, and the gas The pipeline is detachably connected to the vertical beam, and each gas pipeline is sealed at both ends, and three branch pipes are connected at one closed end of the gas pipeline, and an air extraction branch is provided at the other closed end. The exhaust branch pipe is connected with a vacuum pump; a plurality of branch pipes for connecting instruments are arranged on the side wall of the gas pipeline. 2. The gas drainage pipeline environment simulation device according to claim 1, characterized in that: a plurality of pairs of rams are arranged at intervals up and down on the two vertical beams, and each of the rams is slidably connected to the In the vertical chute on the vertical beam, a plurality of pin holes are evenly arranged up and down on each vertical beam, and the ram is connected to the pin hole through a pin; the gas pipeline is supported on on a pair of said rams at the same height. 3. The gas drainage pipeline environment simulation device according to claim 2, characterized in that: a lifting system is respectively arranged on the top of the two vertical beams, and each lifting system is connected to the Gas pipeline. 4. The gas drainage pipeline environment simulation device according to claim 1, characterized in that: the number of said branch pipes on each said gas pipeline is eight, which are arranged at intervals on the upper side of said gas pipeline Two branch pipes, two branch pipes are arranged at intervals on the front side of the gas pipeline, and four branch pipes are arranged at intervals on the lower side of the gas pipeline, wherein Two of the four branch pipes are opposite to the two branch pipes on the upper side of the gas pipeline. 5. The gas drainage pipeline environment simulation device according to claim 2, characterized in that: an arc-shaped groove is arranged on the top of the ram, and a bolt hole is respectively arranged on both sides of the arc-shaped groove; The gas pipeline is located in the arc-shaped groove of the ram and is fixed on the ram through a semicircular steel hoop connected with the two bolt holes. 6. The gas drainage pipeline environment simulation device according to claim 3, characterized in that: the lifting system adopts an electric hoist. 7. The gas drainage pipeline environment simulation device according to claim 1 or 2 or 3 or 4 or 5 or 6, wherein a base is provided at the bottom of each vertical beam, and each base The bottom of the seat is provided with four height-adjustable feet. 8. The gas drainage pipeline environment simulation device according to claim 7, characterized in that four first ring nails are arranged at equal intervals on the outer side of the middle part of each vertical beam, and each of the bases A second ring nail is respectively arranged at the four corners of each first ring nail, and each first ring nail is connected with a second ring nail through a tight steel cable. 9. The gas drainage pipeline environment simulation device according to claim 1, characterized in that: a plug is sealed at the open end of each branch pipe.