A liquid flow monitoring device

Abstract

The application discloses a liquid flow monitoring device and relates to the technical field of intelligent sensing of coal mine equipment, which comprises a joint, a valve body, an electrode one, an electrode two and a detection circuit, the valve body is located at the end of the joint, a guide sleeve is arranged in the valve body, a connecting through hole two is formed in the wall of the guide sleeve, a valve seat is arranged at the end of the guide sleeve facing the liquid inlet, a spacer sleeve is arranged between the valve seat and the joint, a connecting through hole is formed in the wall of the spacer sleeve, the spacer sleeve and the guide sleeve are connected together through the joint and the valve body, a valve core is arranged in the guide sleeve, the valve core is located at the right side of the valve seat, a positioning seat is arranged at the right end of the valve core, and a spring is arranged between the positioning seat and the valve core. When the liquid flow monitoring device is used, whether the valve core on the liquid path has a liquid leakage phenomenon is judged by detecting whether liquid flows, the fault point can be quickly and accurately judged, fault alarm is provided on the man-machine interaction interface, and clear guidance is provided for subsequent treatment.

Description

Technical Field

[0001] This invention relates to the field of intelligent sensing technology for coal mining equipment, and in particular to a liquid flow monitoring device. Background Technology

[0002] Currently, automated mining technology for longwall fully mechanized coal mining faces is widely used in my country. With the continuous advancement of the national strategy for intelligent coal mining, higher requirements have been placed on the level of intelligence of coal mining equipment. Among these requirements, intelligent sensing technology is an important technical prerequisite and guarantee for achieving high-level intelligent coal mining operations.

[0003] Most of the main equipment in coal mining faces, such as hydraulic supports, uses hydraulic fluid as its power source, with emulsion as the medium. The number of supports in a typical working face is between 100 and 200, each independently controlled by an electro-hydraulic directional valve group. Therefore, the stability of the hydraulic system of each support directly determines the reliability and stability of its operation. Currently, leakage from valve cores in hydraulic supports is very common. Furthermore, due to the large number of valves used in supports and the numerous potential failure points, troubleshooting is extremely time-consuming and labor-intensive. This is the biggest factor currently hindering the full effectiveness of intelligent systems and a key factor determining coal mining efficiency. Currently, troubleshooting leakage from hydraulic supports and other major hydraulic equipment relies entirely on manual judgment, which is time-consuming, labor-intensive, and inefficient. To achieve intelligent coal mining, intelligent detection and judgment of hydraulic system leaks must be solved. Only by realizing self-diagnosis of faults can true intelligent production throughout the entire process be achieved. Summary of the Invention

[0004] The technical solution of this invention addresses the problem that existing technical solutions are too simplistic and provides a solution that is significantly different from existing technologies. The embodiments of this invention provide a liquid flow monitoring device to solve the problem that the leakage problem in existing underground hydraulic systems in coal mines is not monitored by intelligent sensors and is instead determined manually based on experience.

[0005] The present invention adopts the following technical solution: a liquid flow monitoring device, including a connector, a valve body, an electrode one, an electrode two, and a detection circuit. The valve body is located at the end of the connector. A guide sleeve is provided inside the valve body. A connecting through hole two is opened on the wall of the guide sleeve. A valve seat is provided on the guide sleeve facing the liquid inlet end. A spacer is provided between the valve seat and the connector. A connecting through hole is opened on the wall of the spacer. The spacer and the guide sleeve are connected together with the valve body through the connector. A valve core is provided inside the guide sleeve. The valve core is located on the right side of the valve seat. A positioning seat is provided at the right end of the valve core. A spring is provided between the positioning seat and the valve core. One end of the electrode one is connected to the valve seat through the connecting through hole. The other end of the electrode one is connected to the detection circuit assembly. One end of the electrode two is connected to the positioning seat through the connecting through hole. The other end of the electrode two is connected to the detection circuit assembly.

[0006] Furthermore, the valve core moves axially within the cavity formed by the guide sleeve and the positioning seat.

[0007] Furthermore, the first electrode and the second electrode form a complete circuit at both ends of the detection circuit assembly.

[0008] Furthermore, the detection circuit assembly is electrically or wirelessly connected to the host computer.

[0009] Furthermore, the valve seat, valve core, valve body, guide sleeve, and positioning seat constitute a one-way valve assembly.

[0010] Furthermore, the contact surfaces of the valve seat and the valve core are inclined surfaces.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] Firstly, this device has low installation requirements. During installation, it only needs to be placed on the liquid flow path through a connector. There are no special requirements for the installation location, which makes the device widely applicable. Furthermore, since it is placed on the liquid flow path, when the valve is closed, if there is leakage in the valve core of the hydraulic support valve, this device can quickly and accurately determine the problem and alert the staff that there is a leakage in the hydraulic support valve on the flow path.

[0013] Secondly, because multiple components within the device form a one-way valve assembly, when the valve for the hydraulic support is opened, the flowing liquid pushes the valve core to move. At this time, a flow path appears between the valve core and the valve seat, allowing normal flow. When the device is installed on the flow path, its configuration does not affect the normal flow of liquid in the pipeline. Furthermore, as a one-way valve, it also prevents backflow, thus providing auxiliary protection for the pipeline. When the hydraulic system is not working, the liquid in the channel does not flow, and the valve core and valve seat within the device will also be closed. If leakage occurs in the valve for the hydraulic support at this time, it will still cause the valve core to shift, resulting in a change in the gap between the sealing surfaces within the valve. When the gap changes, the resistance connected to it also changes. By observing the change in resistance value, leakage can be determined. This determination method is implemented through the specific structure of the device, making it widely applicable, cost-effective, and capable of continuous monitoring, simplifying the monitoring method while providing accurate judgment. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the initial state structure of the present invention;

[0016] Figure 2 This is a schematic diagram comparing the changes in the valve core position of the present invention.

[0017] Figure label:

[0018] 1. Connector; 2. Spacer; 3. Valve seat; 4. Valve core; 5. Spring; 6. Guide sleeve; 7. Positioning seat; 8. Valve body; 9. Electrode 1; 10. Electrode 2; 11. Detection circuit assembly. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] The following is combined Figures 1 to 2 As shown, this embodiment of the invention provides a liquid flow monitoring device, including a connector 1, a valve body 8, an electrode 9, an electrode 10, and a detection circuit. The valve body 8 is located at the end of the connector 1. A guide sleeve 6 is provided inside the valve body 8, and a connecting through hole 2 is opened on the wall of the guide sleeve 6. A valve seat 3 is provided on the guide sleeve 6 facing the liquid inlet end. A spacer 2 is provided between the valve seat 3 and the connector 1. A connecting through hole is opened on the wall of the spacer 2. The spacer 2 and the guide sleeve 6 are connected together to the valve body 8 through the connector 1. A valve core 4 is provided inside the guide sleeve 6. The valve core 4 is located on the right side of the valve seat 3. A positioning seat 7 is provided at the right end of the valve core 4. A spring 5 is provided between the positioning seat 7 and the valve core 4. One end of the electrode 9 is connected to the valve seat 3 through the connecting through hole, and the other end of the electrode 9 is connected to the detection circuit assembly 11. One end of the electrode 10 is connected to the positioning seat 7 through the connecting through hole, and the other end of the electrode 10 is connected to the detection circuit assembly 11.

[0025] Specifically, the valve core 4 moves axially within the cavity formed by the guide sleeve 6 and the positioning seat 7.

[0026] When in operation, the valve core 4 can move under the impact force of the liquid flow when liquid enters, so that the valve core 4 is not obstructed from the normal flow of liquid.

[0027] Specifically, the first electrode 9 and the second electrode 10 form a complete circuit at both ends of the detection circuit assembly 11.

[0028] Specifically, the detection circuit assembly 11 is electrically or wirelessly connected to the host computer.

[0029] During operation, the resistance change detected by the detection circuit component 11 can be promptly transmitted to the host computer, thereby triggering an alarm. Whether the connection is electrical or wireless depends on the placement of the device to ensure timely information transmission.

[0030] Specifically, the valve seat 3, valve core 4, valve body 8, guide sleeve 6 and positioning seat 7 constitute a one-way valve assembly.

[0031] Specifically, the contact surfaces of the valve seat 3 and the valve core 4 are inclined surfaces.

[0032] During operation, when the valve seat 3 and the valve core 4 are in contact at an angle, the contact effect between the valve core 4 and the valve seat 3 can be guaranteed.

[0033] Working principle: During use, the device is connected to any position on the liquid flow path of the hydraulic support via connector 1, allowing liquid to flow into the device through connector 1 and out from the other end. When the valve on the hydraulic support is opened, the liquid pressure pushes the valve core 4 to move, creating a gap between the valve core 4 and the valve seat 3. Liquid enters the gap inside the valve core 4 through this gap and flows out through it. When the valve on the hydraulic support is closed, the valve core 4 returns to its original position under the action of spring 5, causing it to re-engage with the valve seat 3. Even when leakage occurs at this point in the hydraulic support valve, liquid will still flow. In the initial stage, electrode 9 and electrode 10 form a complete circuit through valve core 4. When the liquid flows in the direction of the arrow in the figure, the flowing liquid will again contact valve core 4, causing valve core 4 to move axially in the cavity formed by guide sleeve 6 and positioning seat 7. This will push valve core 4 open, causing valve core 4 to move in the opposite direction of valve seat 3. When the position of valve core 4 changes, the contact position between valve core 4 and positioning seat 7 increases, resulting in a change in contact resistance. When the resistance changes, it will be detected by detection circuit component 11. Detection circuit component 11 will report the liquid flow information to the host computer, thereby playing a role in quickly and accurately alarming the leakage fault.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid flow monitoring device comprising a connector (1), characterised in that; It also includes a valve body (8), electrode one (9), electrode two (10), and a detection circuit. The valve body (8) is located at the end of the connector (1). A guide sleeve (6) is provided inside the valve body (8). A connecting through hole two is provided on the wall of the guide sleeve (6). A valve seat (3) is provided on the guide sleeve (6) facing the liquid inlet end. A spacer (2) is provided between the valve seat (3) and the connector (1). A connecting through hole is provided on the wall of the spacer (2). The spacer (2) and the guide sleeve (6) are connected together with the valve body (8) through the connector (1). 6) A valve core (4) is provided inside. The valve core (4) is located on the right side of the valve seat (3). A positioning seat (7) is provided at the right end of the valve core (4). A spring (5) is provided between the positioning seat (7) and the valve core (4). One end of the first electrode (9) is connected to the valve seat (3) through a connecting through hole. The other end of the first electrode (9) is connected to the detection circuit assembly (11). One end of the second electrode (10) is connected to the positioning seat (7) through a connecting through hole. The other end of the second electrode (10) is connected to the detection circuit assembly (11). The first electrode (9) and the second electrode (10) form a complete circuit at both ends of the detection circuit assembly (11); The valve core (4) moves axially within the cavity formed by the guide sleeve (6) and the positioning seat (7); When the position of the valve core (4) changes, the contact position between the valve core (4) and the positioning seat (7) also changes, resulting in a change in contact resistance, and the detection circuit assembly (11) detects the change in resistance.

2. The liquid flow monitoring device of claim 1, wherein; The detection circuit assembly (11) is electrically or wirelessly connected to the host computer.

3. The liquid flow monitoring device of claim 1, wherein; The valve seat (3), valve core (4), valve body (8), guide sleeve (6) and positioning seat (7) constitute a one-way valve assembly.

4. A liquid flow monitoring device according to claim 3, wherein; The contact surfaces of the valve seat (3) and the valve core (4) are inclined surfaces.

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