WO2021083039A1

WO2021083039A1 - Aqueous medium guarantee system for coal face

Info

Publication number: WO2021083039A1
Application number: PCT/CN2020/123105
Authority: WO
Inventors: 张健恺; 田成金; 刘波; 韦文术; 张晶晶; 王伟; 向虎; 王剑强; 王大龙
Original assignee: 北京天地玛珂电液控制系统有限公司; 北京煤科天玛自动化科技有限公司
Priority date: 2019-10-29
Filing date: 2020-10-23
Publication date: 2021-05-06
Also published as: CN111237014A; AU2020377014A1; CN111237014B

Abstract

An aqueous medium guarantee system (200) for a coal face. An aqueous medium is used as a working medium. The system comprises: a working medium use mechanism (209); a working medium storage mechanism (205), the working medium storage mechanism (205) being communicated with the working medium use mechanism (209), so as to supply the working medium to the working medium use mechanism (209); and a first monitoring mechanism (206), the first monitoring mechanism (206) being communicated between the working medium storage mechanism (205) and the working medium use mechanism (209), so as to detect the quality of the working medium flowing from the working medium storage mechanism (205) to the working medium use mechanism (209), and when the first monitoring mechanism (206) detects that the quality of the working medium is substandard, supply of the working medium from the working medium storage mechanism (205) to the working medium use mechanism (209) being stopped. The system facilitates reduction of the maintenance cost in a mining operation process.

Description

A water medium guarantee system for coal mining face

Technical field

The invention relates to the technical field of coal mining guarantees, in particular to a working surface water medium guarantee system.

Background technique

Coal mining face refers to the first production site of coal, and is an important area used to install coal mining related equipment and conduct coal mining work. The above-mentioned coal mining related equipment includes hydraulic support equipment used for coal mining, which also includes pumps, valves, cylinders, pipelines and many other devices that require working media to operate.

At present, the commonly used working medium is emulsion. Emulsion needs to be formed by mixing water and oil in a special dosing device. However, under current technical conditions, it is difficult to stabilize the mixing ratio of the emulsion, and it is also difficult to accurately determine the mixing ratio of the emulsion. In addition, for some operating scenarios, it does not have sufficient conditions to set up a better liquid dosing device. In addition, once the emulsion is discharged into the environment, it is easy to cause environmental pollution. Many problems caused by emulsions are very unfavorable for ensuring the smooth progress of mining operations.

In view of this, the applicant of the present invention proposes that it is possible to use water alone as the working medium. However, there is currently no related system for quality control of water as a working medium in this field. In practical applications, unqualified water can easily cause rust and corrosion of related components in hydraulic support equipment. This will undoubtedly greatly reduce the service life of hydraulic support equipment and increase maintenance costs during mining operations.

Therefore, it is desirable to propose a system that is conducive to reducing maintenance costs during mining operations.

Summary of the invention

In view of the above-mentioned problems, the present invention proposes a working medium guarantee system for coal mining face, through which the system is beneficial to reduce the maintenance cost during the mining operation.

According to the present invention, a working medium guarantee system for a coal mining face is proposed. The working medium is water, and the system includes: a working medium using mechanism; a working medium storage mechanism, the working medium storage mechanism and the The working medium use mechanism is communicated to provide the working medium to the working medium use mechanism; and a first monitoring mechanism, which is connected between the working medium storage mechanism and the working medium use mechanism, for matching The quality of the working medium flowing from the working medium storage mechanism to the working medium using mechanism is detected; wherein, when the first monitoring mechanism detects that the quality of the working medium is not up to standard, it stops sending the working medium from the working medium storage mechanism to the working medium. Use agency to provide working medium.

Through the above system, when the working medium does not meet the standard, the working medium can be stopped in time to provide the working medium to the working medium using mechanism (for example, the hydraulic support). Therefore, it is beneficial to avoid supplying the substandard working medium to the hydraulic support, so that the substandard working medium can prevent the related components in the working medium using mechanism from corroding, scaling, and/or clogging. This is beneficial to prolong the service life of the working medium using mechanism and reduce the maintenance cost during the mining operation.

In one embodiment, a working medium pump is communicated between the first monitoring mechanism and the working medium using mechanism, and the working medium pump is used to pump the working medium in the working medium storage mechanism to the working medium. The working medium using mechanism, wherein, when the first monitoring mechanism detects that the quality of the working medium is not up to standard, the first monitoring mechanism controls the working medium pump to stop pumping work to the working medium using mechanism medium.

In one embodiment, when the first monitoring mechanism detects that the quality of the working medium is not up to standard, it sends a signal to the working medium storage mechanism to inspect the working medium storage mechanism.

In one embodiment, the working medium storage mechanism is a floating-top liquid tank. The floating-top liquid tank includes a tank for containing the working medium and a floating roof arranged in the tank. The roof structure is capable of floating on the liquid surface of the working medium, wherein when the first monitoring mechanism detects that the quality of the working medium is not up to standard, it sends a signal to the floating roof liquid tank to inspect the floating roof .

In one embodiment, the system further includes a working medium preparation mechanism connected to the working medium storage mechanism, and the working medium preparation mechanism is configured to receive a pre-medium from a medium source and process the pre-medium , To form a working medium, and the working medium can be provided to the working medium storage mechanism.

In one embodiment, the system further includes a second monitoring mechanism connected between the working medium preparation mechanism and the working medium storage mechanism, and the second monitoring mechanism is used for monitoring the working medium preparation mechanism. It is provided to detect the quality of the working medium of the working medium storage mechanism, wherein when the second monitoring mechanism detects that the quality of the working medium is not up to the standard, an alarm is issued to the working medium preparation mechanism to prompt the The working medium preparation mechanism performs maintenance and/or inspection.

In one embodiment, the system further includes a third monitoring mechanism connected to the working medium using mechanism, and the third monitoring mechanism is used to detect the quality of the working medium leaving the working medium using mechanism, Wherein, when the third monitoring mechanism detects that the quality of the working medium reaches the standard, the third monitoring mechanism provides the working medium to the working medium storage mechanism for circulation.

In one embodiment, the system further includes a working medium preparation mechanism connected to the working medium storage mechanism, and the working medium preparation mechanism is configured to receive a pre-medium from a medium source and process the pre-medium , To form a working medium, and can provide the working medium to the working medium storage mechanism, wherein, when the third monitoring mechanism detects that the quality of the working medium is not up to standard, the third monitoring mechanism will The working medium is provided to the working medium preparation mechanism for circulation.

In one embodiment, when the third monitoring mechanism detects that the quality of the working medium is not up to standard, the third monitoring mechanism provides the working medium to the spray mechanism.

In one embodiment, when the pH value of the working medium is less than 6 or greater than 9, and/or the conductivity of the working medium is greater than 300 μs/cm, the quality of the working medium does not meet the standard.

Compared with the prior art, the present invention has the advantage that: through the above-mentioned system, when the working medium does not meet the standard, it can stop supplying the working medium to the working medium using mechanism (for example, a hydraulic support) in time. Therefore, it is beneficial to avoid supplying the substandard working medium to the hydraulic support, so that the substandard working medium can prevent the related components in the working medium using mechanism from corroding, scaling, and/or clogging. This is beneficial to prolong the service life of the working medium using mechanism and reduce the maintenance cost during the mining operation.

Description of the drawings

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. among them:

Fig. 1 shows a schematic diagram of a working medium guarantee system for a coal mining face according to an embodiment of the present invention.

In the drawings, the same components use the same reference numerals. The drawings are not drawn to actual scale.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Fig. 1 schematically shows an embodiment of a working medium guarantee system 200 for a coal mining face according to the present invention.

As shown in FIG. 1, the system 200 includes a working medium using mechanism, such as a hydraulic support 209. The system 200 also includes a working medium storage mechanism, such as a floating roof liquid tank 205. The system 200 also includes a first monitoring mechanism 206, which is connected between the floating roof tank 205 and the hydraulic support 209, so that the quality of the working medium supplied from the floating roof tank 205 to the hydraulic support 209 can be inspected. When the first monitoring mechanism 206 detects that the quality of the working medium is not up to standard, it stops supplying the working medium from the floating roof tank 205 to the hydraulic support 209.

Through the above arrangement, when the working medium does not meet the standard, the supply of working medium to the hydraulic support 209 can be stopped in time. Therefore, it is beneficial to avoid supplying the substandard working medium to the hydraulic support 209, so that the substandard working medium can prevent the related components in the hydraulic support 209 from corroding, fouling, and/or clogging. This is beneficial to extend the service life of the hydraulic support 209 and reduce maintenance costs during mining operations.

It should be understood that, if there is no obvious contradiction, other types of working medium storage mechanisms and/or working medium use mechanisms are also applicable to the system 200 herein.

As also shown in FIG. 1, a working medium pump 207 (for example, a pump station, especially a high-pressure plunger pump) is connected between the first monitoring mechanism 206 and the hydraulic support 209. The working medium pump 207 is used to pump the working medium in the floating roof tank 205 to the hydraulic support 209. When the first monitoring mechanism 206 detects that the quality of the working medium is not up to standard, the first monitoring mechanism 206 controls the working medium pump 207 to stop pumping the working medium to the hydraulic support 209.

In addition, in a preferred embodiment, a corresponding filter station 208 may be provided between the working medium pump 207 and the hydraulic support 209, preferably a high-pressure filter station 208. The filter station can remove suspended particles, colloids and other impurities in the working medium before the working medium enters the hydraulic support 209, so as to prevent the hydraulic support, electro-hydraulic valve and other mechanisms from being polluted and blocked due to impurities. Here, if the high-pressure filter station 208 is used, the filtration can be performed under a higher pressure, and the filtration effect is better. The high pressure here is about 30MPa or more. The rated pressure of the high-pressure filter station 208 is approximately 37.5 MPa.

As shown in FIG. 1, when the first monitoring mechanism 206 detects that the quality of the working medium is not up to standard, it can also send a signal to the floating roof liquid tank 205 to inspect it. The floating roof liquid tank 205 includes a tank for containing the working medium, and a floating roof arranged in the tank. The floating roof is configured to float on the liquid surface of the working medium, thereby avoiding the formation of a cavity in the box body as much as possible, and thus avoiding the working medium in the box body from contacting air. Preferably, when the first monitoring mechanism 206 detects that the quality of the working medium is not up to standard, it sends a signal to the floating roof tank 205 to inspect the floating roof, so as to check whether there is a problem at the floating roof first.

The system 200 also includes a working medium preparation mechanism 203 connected with the floating roof liquid tank 205. The working medium preparation mechanism 203 is used to receive the pre-medium from a medium source (for example, water from a downhole supply source) 201, and process the pre-medium to form a working medium. The working medium preparation mechanism 203 can provide the prepared working medium to the floating roof liquid tank 205. The system 200 also includes a second monitoring mechanism 204 connected between the working medium preparation mechanism 203 and the floating roof liquid tank 205. The second monitoring mechanism 204 is used for detecting the quality of the working medium supplied from the working medium preparation mechanism 203 to the floating roof liquid tank 205. When the second monitoring mechanism 204 detects that the quality of the working medium is not up to the standard, an alarm is issued to the working medium preparation mechanism 203 to remind the operator to maintain and/or inspect the working medium preparation mechanism 203.

Preferably, a water inlet filter station 202 is communicated between the medium source 201 and the working medium preparation mechanism 203. In this way, the pre-medium can be filtered before being supplied to the working medium preparation mechanism 203 to avoid damage to the working medium preparation mechanism 203. In the embodiment shown in FIG. 1, the water filtered by the water inlet filter station 203 can also be provided to a spray mechanism, for example, including the spray water tank 212 in FIG. 1. The spray water tank 212 can provide the working medium to the spray pump station 213, thereby achieving a spray effect. For example, the water filtered by the water inlet filter station 203 can be provided to the spray water tank 212 as needed for spraying.

The system 200 also includes a third monitoring mechanism 211 connected with the hydraulic support 209. The third monitoring mechanism 211 is used to detect the quality of the working medium leaving the working medium using mechanism. When the third monitoring organization 211 detects that the quality of the working medium meets the standard, the third monitoring organization 211 provides the working medium to the floating roof liquid tank 205.

In addition, when the third monitoring organization 211 detects that the quality of the working medium does not meet the standard, the third monitoring organization 211 can re-provide the non-compliant working medium to the working medium preparation mechanism 203 to reprocess it, thereby achieving Reuse of working medium.

Alternatively, when the third monitoring organization 211 detects that the quality of the working medium is not up to standard, the third monitoring organization 211 may also provide the working medium to the spraying mechanism. The spray mechanism is, for example, the spray water tank 212 in FIG. 1 and the spray pump station 213 connected after the spray water tank 212. As a result, the working medium that does not meet the standard can be fully and effectively used.

Preferably, the third monitoring mechanism 211 may first detect whether the floating roof liquid tank 205 is full. If it is not full, the working medium that does not meet the standard is preferably provided to the working medium preparation mechanism 203; otherwise, the working medium is provided to the spray water tank 212.

In a preferred embodiment, a liquid return filtering station 210 is connected between the third monitoring mechanism 211 and the floating roof liquid tank 205. The working medium discharged from the third monitoring mechanism 211 is filtered through the liquid-return filtering station 210 first, and then provided to the floating-top liquid tank 205 for recycling. The liquid return filtering station 210 is beneficial to prevent impurities from entering the floating roof liquid tank 205. The rated pressure of the liquid return filter station 210 is preferably about 2.5 MPa, and the accuracy is preferably about 25 μm.

The working medium used in the system 200 of the present invention is water. The water here is, for example, treated water that has only undergone one-stage reverse osmosis desalination, and has not undergone two or multi-stage reverse osmosis, or continuous electrical desalination; or if the local tap water or mine water meets the requirements, it can also be used directly use. The conductivity of this water is less than 300μS/cm, and the PH value can be between 6-9. In this case, components such as pump stations, bracket valves, cylinders and pipeline accessories that are in contact with water are made of corrosion-resistant materials and surface treatment processes to prevent them from rusting or being corroded.

The first monitoring organization 206, the second monitoring organization 204, and the third monitoring organization 211 mainly detect the pH value and/or conductivity of the working medium. If the detection result is within the above range, it is judged that the quality of the working medium is up to the standard; otherwise, it is judged that the quality of the working medium is not up to the standard.

It should be understood that the spray mechanism in the present invention can also be replaced with other water-using mechanisms or devices to make full use of water resources.

The above-mentioned system 200 (especially the setting of the monitoring mechanism therein) is beneficial to ensure that the quality of the working medium provided to the working medium using mechanism meets the standard. This is beneficial to avoid problems such as corrosion, fouling, and blockage of the components in the hydraulic support 209, and is beneficial to reduce the maintenance cost during the mining operation. In particular, the above-mentioned system 200 effectively realizes the recycling and reuse of the aqueous medium, and the aqueous medium that cannot be kept in the circulation can also be fully utilized.

Although the present invention has been described with reference to the preferred embodiments, without departing from the scope of the present invention, various modifications can be made thereto and the components therein can be replaced with equivalents. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any manner. The present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

A working medium guarantee system for a coal mining face, the working medium is water, and the system includes:

Working medium use agency;

A working medium storage mechanism, the working medium storage mechanism is in communication with the working medium using mechanism to provide the working medium to the working medium using mechanism; and

A first monitoring mechanism, which is connected between the working medium storage mechanism and the working medium using mechanism, and is used for detecting the quality of the working medium flowing from the working medium storage mechanism to the working medium using mechanism;

Wherein, when the first monitoring mechanism detects that the quality of the working medium is not up to the standard, it stops providing the working medium from the working medium storage mechanism to the working medium using mechanism.
The system according to claim 1, wherein a working medium pump is connected between the first monitoring mechanism and the working medium using mechanism, and the working medium pump is used to store the working medium in the working medium storage mechanism. The working medium is pumped to the working medium using mechanism,

Wherein, when the first monitoring mechanism detects that the quality of the working medium does not meet the standard, the first monitoring mechanism controls the working medium pump to stop pumping the working medium to the working medium using mechanism.
The system according to claim 1, wherein when the first monitoring mechanism detects that the quality of the working medium is not up to standard, it sends a signal to the working medium storage mechanism to inspect the working medium storage mechanism.
The system according to claim 3, wherein the working medium storage mechanism is a floating-top liquid tank, the floating-top liquid tank includes a tank for containing the working medium, and is arranged in the tank The floating roof is structured to float on the liquid surface of the working medium,

Wherein, when the first monitoring mechanism detects that the quality of the working medium does not meet the standard, it sends a signal to the floating roof liquid tank to inspect the floating roof.
The system according to any one of claims 1 to 4, wherein the system further comprises a working medium preparation mechanism communicated with the working medium storage mechanism, and the working medium preparation mechanism is used to obtain a water source from a water source. The pre-medium is received, and the pre-medium is processed to form a working medium, and the working medium can be provided to the working medium storage mechanism.
The system according to claim 5, wherein the system further comprises a second monitoring mechanism connected between the working medium preparation mechanism and the working medium storage mechanism, and the second monitoring mechanism is used for monitoring The quality of the working medium provided to the working medium storage mechanism from the working medium preparation mechanism is tested,

Wherein, when the second monitoring mechanism detects that the quality of the working medium does not meet the standard, an alarm is issued to the working medium preparation mechanism to prompt maintenance and/or inspection of the working medium preparation mechanism.
The system according to any one of claims 1 to 4, wherein the system further comprises a third monitoring mechanism connected to the working medium using mechanism, and the third monitoring mechanism is used to check the exit The quality of the working medium used by the working medium is tested,

Wherein, when the third monitoring mechanism detects that the quality of the working medium meets the standard, the third monitoring mechanism provides the working medium to the working medium storage mechanism to recycle the working medium.
The system according to claim 7, wherein the system further comprises a working medium preparation mechanism connected with the working medium storage mechanism, the working medium preparation mechanism is used to receive the pre-medium from the medium source, and Processing the pre-medium to form a working medium, and the working medium can be provided to the working medium storage mechanism,

Wherein, when the third monitoring organization detects that the quality of the working medium does not meet the standard, the third monitoring organization provides the working medium to the working medium preparation mechanism, so that the working medium is recycled after the quality reaches the standard. use.
The system according to claim 7, wherein when the third monitoring organization detects that the quality of the working medium is not up to standard, the third monitoring organization provides the working medium to the spraying mechanism.
The system according to any one of claims 1 to 4, wherein when the pH value of the working medium is less than 6 or greater than 9, and/or the conductivity of the working medium is greater than 300 μs/cm, the The quality of the working medium is not up to standard.