A coal mine electromechanical vibration detection device

Abstract

The utility model discloses a coal mine electromechanical vibration detection device, include: water tank, humidity transducer, vibration transmission subassembly and control system. Water tank has water storage cavity and pressure chamber, and water storage cavity communicates pressure chamber, and the communicating place of water storage cavity and pressure chamber is equipped with check valve, check valve is used for pumping the fluid in water storage cavity to pressure chamber, and the top of pressure chamber is connected with the water collecting vertical pipe, humidity transducer installs in the top of water collecting vertical pipe, vibration transmission subassembly installs in water tank, and the contact of vibration transmission subassembly connects electromechanical equipment, when the vibration of electromechanical equipment, vibration transmission subassembly extrudes the lateral wall of pressure chamber, to make the fluid in pressure chamber surge into water collecting vertical pipe and form liquid column, control system is electrically connected with humidity transducer. The utility model discloses a coal mine electromechanical vibration detection device, can reduce the probability of system misjudgment to reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of vibration detection equipment technology, and in particular to a coal mine electromechanical vibration detection device. Background Technology

[0002] Coal mine electromechanical vibration detection devices are specifically designed to monitor the vibration signals of various electromechanical equipment (such as ventilation fans, water pumps, coal mining machines, conveyors, hoists, etc.) during operation in underground coal mines. Their purpose is to assess the operational status of the equipment by monitoring its vibration frequency, thereby enabling predictive maintenance, preventing sudden equipment failures, and ensuring safe production in underground coal mines.

[0003] Currently, vibration detection devices for coal mine machinery and equipment mainly rely on bolt-fixed vibration sensors to convert vibration signals from the equipment into digital outputs. However, during long-term operation, the bolts are prone to loosening, causing the sensors themselves to generate additional vibrations. This "false vibration" signal interferes with the actual readings, causing output signal distortion, which in turn triggers false alarms in the control system, leads to ineffective repairs, and increases maintenance costs. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a coal mine electromechanical vibration detection device that can reduce the probability of system misjudgment, thereby reducing maintenance costs.

[0005] The purpose of this utility model is achieved by the following technical solution: a coal mine electromechanical vibration detection device, comprising: a water tank, a humidity sensor, a vibration transmission component, and a control system;

[0006] The water tank has a water storage chamber and a pressure chamber. The water storage chamber is connected to the pressure chamber. A one-way valve is provided at the connection between the water storage chamber and the pressure chamber. The one-way valve is used to pump the fluid in the water storage chamber to the pressure chamber. A water collection riser is connected to the top of the pressure chamber.

[0007] The humidity sensor is installed at the top of the water collection riser;

[0008] The vibration transmission component is installed in the water tank. The contact head of the vibration transmission component is connected to the electromechanical equipment. When the electromechanical equipment vibrates, the vibration transmission component squeezes the side wall of the pressure chamber, so that the fluid in the pressure chamber rushes into the water collection riser and forms a liquid column.

[0009] The control system is electrically connected to the humidity sensor.

[0010] Furthermore, the water tank is also provided with a drain pipe, the inlet of which is connected to the bottom of the water collection riser, and the drain pipe passes through the outer shell of the water tank and has an outlet located on the outer shell of the water tank.

[0011] Furthermore, the coal mine electromechanical vibration detection device also includes a fluid recovery mechanism, which is used to transport the fluid in the drainage pipe back to the water storage chamber.

[0012] Furthermore, the water collection riser also has a splash-proof structure, which is located inside the water collection riser and forms a physical barrier between the probe of the humidity sensor and the liquid surface of the water collection riser to block droplets.

[0013] Furthermore, the splash-proof structure is an umbrella-shaped structure made of a hydrophobic material.

[0014] Furthermore, the umbrella-shaped structure has multiple vent holes, which are disposed on the umbrella-shaped structure and are distributed at intervals around the axis of the umbrella-shaped structure.

[0015] Furthermore, the splash-proof structure also includes a metal filter element, which is disposed on the top of the umbrella-shaped structure and sleeved on the probe of the humidity sensor.

[0016] Furthermore, the vibration transmission assembly includes a vibration contact and an elastic element. The two ends of the vibration contact are respectively connected to the electromechanical equipment and the side wall of the pressure chamber; the two ends of the elastic element abut against the vibration contact and the outer shell of the water tank, respectively.

[0017] Furthermore, the vibration transmission assembly also includes a transition plate and a fastening assembly. The transition plate is installed on the contact surface of the vibration contactor and has a plurality of sliding grooves that extend through the wall thickness of the transition plate. The fastening assembly includes an assembly and a locking element. The assembly is slidably installed in the sliding groove and is used to connect with electromechanical equipment. The locking element is used to lock the assembly after it is assembled with the electromechanical equipment.

[0018] Furthermore, the control system is installed in the water tank; the coal mine electromechanical vibration detection device also includes an alarm, which is electrically connected to the control system.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The water tank has a water storage chamber and a pressure chamber, with the water storage chamber connected to the pressure chamber. A one-way valve is installed at the connection between the water storage chamber and the pressure chamber. The one-way valve is used to pump fluid from the water storage chamber to the pressure chamber. A water collection riser is connected to the top of the pressure chamber. It is understood that both the pressure chamber and the water storage chamber are pre-filled with liquid. The design volume of the water storage chamber is larger than that of the pressure chamber to ensure smoother and more stable fluid flow from the water storage chamber to the pressure chamber. The one-way valve restricts fluid flow only from the water storage chamber to the pressure chamber, thereby continuously delivering liquid from the water storage chamber to the pressure chamber, ensuring that the pressure chamber is always full, thus improving its response to mechanical vibration. A water collection riser is connected to the top of the pressure chamber. This riser is made of a transparent material (e.g., glass) and is marked with graduations. When the pressure chamber vibrates and compresses, the internal liquid level rises in the water collection riser. By observing the change in the graduations, monitoring personnel can directly read the real-time vibration frequency of the electromechanical equipment.

[0021] 2. The humidity sensor is installed at the top of the water collection riser. As a preferred installation method, specifically, an internal thread is provided at the top of the riser, and the sensor probe extends into the pipe via the threaded connection, positioning the probe in a preset monitoring position. The core of this design lies in utilizing the height of the water collection riser to create a natural vibration intensity filtering mechanism: the frequency and intensity of false vibrations are insufficient to raise the liquid column in the riser to the height that submerges the humidity sensor probe. Only continuous, strong mechanical vibration (genuine vibration from electromechanical equipment) can cause the liquid column to rise sufficiently and submerge the probe, triggering the humidity sensor response, thereby effectively filtering out the interference of false vibrations and preventing misjudgments by the control system.

[0022] 3. Based on the vibration transmission component installed in the water tank, the contact head of the vibration transmission component is connected to the electromechanical equipment. When the electromechanical equipment vibrates, the vibration transmission component squeezes the side wall of the pressure chamber, causing the fluid in the pressure chamber to rush into the water collection riser and form a liquid column. It can be understood that this utility model is a mechanical-hydraulic visual detection device. During operation, the vibration of the electromechanical equipment is captured by the vibration transmission component and converted into periodic squeezing of the pressure chamber. This squeezing converts mechanical energy into hydraulic energy, driving the liquid in the pressure chamber to rush into the water collection riser and form a liquid column. Therefore, mechanical vibration, which cannot be directly observed, is converted into a visually apparent change in liquid column height. This principle cleverly replaces traditional electronic vibration sensors, fundamentally avoiding misjudgments in the control system caused by vibration interference from vibration sensors, thereby reducing maintenance costs. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a coal mine electromechanical vibration detection device according to the present invention;

[0024] Figure 2 for Figure 1 The cross-sectional view of the water tank shown;

[0025] Figure 3 for Figure 2 Front view of the splash-proof structure shown

[0026] Figure 4 for Figure 1 The cross-sectional view of the vibration transmission component shown.

[0027] In the diagram: 1. Water tank; 11. Water storage chamber; 12. Pressure chamber; 13. Drainage pipe; 2. One-way valve; 3. Water collection riser; 31. Splash-proof structure; 311. Umbrella-shaped structure; 312. Vent hole; 313. Metal filter element; 4. Humidity sensor; 5. Vibration transmission assembly; 51. Vibration contact; 52. Elastic element; 53. Transition plate; 531. Slide groove; 6. Control system; 7. Fluid recovery mechanism; 8. Fastening assembly; 81. Assembly parts; 82. Locking parts; 9. Alarm. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0029] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is described as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, a preferred embodiment of the present invention provides a coal mine electromechanical vibration detection device, comprising: a water tank 1, a humidity sensor 4, a vibration transmission component 5, and a control system 6.

[0032] The working principle of this invention is as follows: When the monitored electromechanical equipment vibrates, the vibration transmission component 5 captures the mechanical vibration and transmits it to the hydraulic system of the device, periodically squeezing the pressure chamber 12. When the pressure chamber 12 is squeezed, the liquid inside it surges into the water collection riser 3 under pressure, forming a rising liquid column. If the vibration continues and is strong enough, the liquid column will eventually rise to the top of the water collection riser 3, submerging the probe of the humidity sensor 4. After the probe is wetted, the humidity state changes, triggering it to send an electrical signal to the control system 6. Upon receiving this signal, the control system 6 can determine that the equipment is in an abnormal vibration state and execute an alarm action.

[0033] The water tank 1 has a water storage chamber 11 and a pressure chamber 12. The water storage chamber 11 is connected to the pressure chamber 12, and a one-way valve 2 is provided at the connection between the water storage chamber 11 and the pressure chamber 12. The one-way valve 2 is used to pump the fluid in the water storage chamber 11 to the pressure chamber 12. A water collection riser 3 is connected to the top of the pressure chamber 12. It can be understood that both the pressure chamber 12 and the water storage chamber 11 are pre-filled with liquid. The design volume of the water storage chamber 11 is larger than the design volume of the pressure chamber 12 to ensure a smoother and more stable liquid flow from the water storage chamber 11 to the pressure chamber 12. The one-way valve 2 restricts the fluid to flow only from the water storage chamber 11 to the pressure chamber 12, thereby continuously delivering the liquid in the water storage chamber 11 to the pressure chamber 12, ensuring that the pressure chamber 12 is always full, thus improving its response to mechanical vibration. A water collection riser 3 is connected to the top of the pressure chamber 12. The water collection riser 3 is made of a transparent material (e.g., glass) and is marked with graduations. When the pressure chamber 12 vibrates and squeezes, the internal liquid level will rise in the water collection riser 3. By observing the scale changes, the monitoring personnel can directly read the real-time vibration frequency of the electromechanical equipment.

[0034] The humidity sensor 4 is installed at the top of the water collection riser 3. Specifically, a preferred installation method involves an internal thread at the top of the riser, through which the sensor probe extends into the pipe, positioning the probe at a preset monitoring position. The core of this design lies in utilizing the height of the water collection riser 3 to create a natural vibration intensity filtering mechanism: the frequency and intensity of false vibrations are insufficient to raise the liquid column within the riser 3 to the height required to submerge the humidity sensor 4 probe. Only continuous, strong mechanical vibrations (genuine vibrations from electromechanical equipment) can cause the liquid column to rise sufficiently and submerge the probe, triggering the humidity sensor 4 to respond. This effectively filters out the interference of false vibrations and prevents misjudgments by the control system 6.

[0035] The vibration transmission component 5 is installed in the water tank 1. The contact head of the vibration transmission component 5 is connected to the electromechanical equipment. When the electromechanical equipment vibrates, the vibration transmission component 5 squeezes the side wall of the pressure chamber 12, causing the fluid in the pressure chamber 12 to flow into the water collection riser 3 and form a liquid column. This invention can be understood as a mechanical-hydraulic visual detection device. During operation, the vibration of the electromechanical equipment is captured by the vibration transmission component 5 and converted into periodic squeezing of the pressure chamber 12. This squeezing converts mechanical energy into hydraulic energy, driving the liquid in the pressure chamber 12 to flow into the water collection riser 3 and form a liquid column. Therefore, mechanical vibration, which cannot be directly observed, is converted into a visually apparent change in liquid column height. This principle cleverly replaces traditional electronic vibration sensors, fundamentally avoiding misjudgments in the control system 6 caused by vibration interference from the vibration sensor, thereby reducing maintenance costs.

[0036] The control system 6 is electrically connected to the humidity sensor 4. It can be understood that the control system 6 can be integrated into the water tank 1, or it can serve as a control platform in the central control room for unified management of multiple detection devices. Upon receiving the signal from the humidity sensor 4, the control system 6 can promptly issue a warning to the staff.

[0037] like Figure 2 As shown, preferably, the water tank 1 is further provided with a drain pipe 13. The inlet of the drain pipe 13 is connected to the bottom of the water collection riser 3. The drain pipe 13 penetrates the outer shell of the water tank 1 and has an outlet located on the outer shell of the water tank 1. The diameter of the drain pipe 13 is smaller than the diameter of the water collection riser 3, so that the liquid flow preferentially forms a liquid column in the water collection riser 3 and then slowly descends. The principle is that during vibration, the negative pressure generated by the reset of the pressure chamber 12 will preferentially replenish water from the water storage chamber 11, rather than drawing back the liquid flow in the water collection riser 3 (the pressure required to open the one-way valve 2 is much less than the pressure required to lift the entire liquid column in the water collection riser 3). Under long-term vibration conditions, this will cause the liquid column to gradually rise instead of descend, thus causing even low-intensity continuous vibration of the electromechanical equipment to accumulate and trigger false alarms. Therefore, the design of the drain pipe 13 effectively solves the problem of liquid column accumulation and rise caused by the negative pressure replenishment of the pressure chamber 12, thereby effectively filtering the interference of low-intensity continuous vibration of the electromechanical equipment and avoiding false alarms from the control system 6.

[0038] like Figure 1 and Figure 2As shown, preferably, the coal mine electromechanical vibration detection device further includes a fluid recovery mechanism 7, which is used to transport the fluid in the drainage pipe 13 back to the water storage chamber 11. As a preferred embodiment, the fluid recovery mechanism 7 is a water pump. The addition of the fluid recovery mechanism 7 gives the detection device a liquid circulation system: after the liquid is squeezed from the pressure chamber 12 into the water collection riser 3, it flows out from the drainage pipe 13, is received by the fluid recovery mechanism 7, and then flows to the water storage chamber 11, which supplies water to the pressure chamber 12.

[0039] like Figure 2 and Figure 3 As shown, preferably, the water collecting riser 3 also has a splash-proof structure 31, which is disposed inside the water collecting riser 3. The splash-proof structure 31 forms a physical barrier between the probe of the humidity sensor 4 and the liquid surface of the water collecting riser 3 to block droplets. It can be understood that the purpose of the splash-proof structure 31 is to prevent water droplets splashed up when the liquid column rises from touching the probe of the humidity sensor 4, causing the humidity sensor 4 to send an incorrect signal to the control system 6.

[0040] like Figure 2 and Figure 3 As shown, preferably, the splash-proof structure 31 is an umbrella-shaped structure 311, which is made of a hydrophobic material. It can be understood that when the liquid column rises, most of the water droplets are blocked by the umbrella-shaped structure 311 (conical structure) and flow back into the liquid column along the inner wall of the umbrella-shaped structure 311. The use of hydrophobic materials (e.g., Teflon, polypropylene, or stainless steel) helps the umbrella-shaped structure 311 capture water droplets.

[0041] like Figure 2 and Figure 3 As shown, preferably, the umbrella-shaped structure 311 has multiple vent holes 312, which are disposed on the umbrella-shaped structure 311 and are distributed at intervals around the axis of the umbrella-shaped structure 311. It can be understood that the lateral vent holes 312 ensure air pressure balance on both the inner and outer sides of the splash-proof structure 31, preventing negative pressure from forming in the water collection riser 3 and causing fluid to be drawn upwards, thus ensuring that the humidity sensor 4 can detect real humidity changes.

[0042] like Figure 2 and Figure 3 As shown, preferably, the splash-proof structure 31 further includes a metal filter element 313, which is disposed on the top of the umbrella-shaped structure 311 and sleeved on the probe of the humidity sensor 4. Because the splash-proof structure 31 has vent holes 312, even after water splashes are intercepted, tiny water droplets may still escape to the humidity sensor 4 through the vent holes 312. The metal filter element 313 is used to handle these tiny droplets, further reducing the possibility of false alarms from the humidity sensor 4.

[0043] like Figure 1 and Figure 4 As shown, preferably, the vibration transmission assembly 5 includes a vibration contact 51 and an elastic element 52. The two ends of the vibration contact 51 are respectively connected to the electromechanical equipment and the side wall of the pressure chamber 12; the two ends of the elastic element 52 abut against the vibration contact 51 and the outer shell of the water tank 1, respectively. It can be understood that, preferably, the vibration contact 51 abuts against the side closest to the vibration source of the electromechanical equipment, and the elastic element 52 (e.g., a spring) is used to drive the vibration contact 51 to reset.

[0044] like Figure 1 and Figure 4 As shown, preferably, the vibration transmission assembly 5 further includes a transition plate 53 and a fastening assembly 8. The transition plate 53 is installed on the contact surface of the vibration contact 51. The transition plate 53 has a plurality of sliding grooves 531, which extend through the wall thickness of the transition plate 53. The fastening assembly 8 includes an assembly 81 and a locking member 82. The assembly 81 is slidably installed in the sliding groove 531 and is used to connect with electromechanical equipment. The locking member 82 is used to lock the assembly 81 after it is assembled with the electromechanical equipment. It can be understood that the transition plate 53 allows the same detection device body to be adapted to the installation interfaces of various electromechanical equipment, and has greater versatility than the vibration contact 51. The fitting 81 (e.g., bolt) is inserted from the side of the transition plate 53 away from the electromechanical equipment, passes through the slide groove 531, and is screwed into the mating part (e.g., assembly hole) of the monitored equipment. Then, it is locked with the locking part 82 (e.g., nut) to prevent the fitting 81 from loosening and sliding under long-term vibration, and to ensure that the transition plate 53 is always in contact with the equipment to be tested.

[0045] like Figure 1 , Figure 2 and Figure 4 As shown, preferably, the control system 6 is installed in the water tank 1; the coal mine electromechanical vibration detection device further includes an alarm 9, which is electrically connected to the control system 6. It can be understood that after the control system 6 receives a signal from the humidity sensor 4, the alarm 9 (e.g., a sound alarm, a light alarm, or a combination of both) sounds an alarm, enabling maintenance personnel to quickly locate the electromechanical equipment with abnormal vibration.

[0046] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coal mine electromechanical vibration detection device, characterized in that, include: A water tank (1) has a water storage chamber (11) and a pressure chamber (12). The water storage chamber (11) is connected to the pressure chamber (12). A one-way valve (2) is provided at the connection between the water storage chamber (11) and the pressure chamber (12). The one-way valve (2) is used to pump the fluid in the water storage chamber (11) into the pressure chamber (12). A water collection riser (3) is connected to the top of the pressure chamber (12). Humidity sensor (4), the humidity sensor (4) is installed on the top of the water collection riser (3); Vibration transmission component (5), the vibration transmission component (5) is installed in the water tank (1), the contact head of the vibration transmission component (5) is connected to the electromechanical equipment, when the electromechanical equipment vibrates, the vibration transmission component (5) squeezes the side wall of the pressure chamber (12) so that the fluid in the pressure chamber (12) rushes into the water collection vertical pipe (3) and forms a liquid column; The control system (6) is electrically connected to the humidity sensor (4).

2. The coal mine electromechanical vibration detection device according to claim 1, characterized in that: The water tank (1) is also provided with a drain pipe (13), the inlet of the drain pipe (13) is connected to the bottom of the water collection vertical pipe (3), the drain pipe (13) passes through the outer shell of the water tank (1) and has an outlet located on the outer shell of the water tank (1).

3. The coal mine electromechanical vibration detection device according to claim 2, characterized in that: The coal mine electromechanical vibration detection device further includes a fluid recovery mechanism (7), which is used to transport the fluid in the drainage pipe (13) back to the water storage chamber (11).

4. The coal mine electromechanical vibration detection device according to claim 2, characterized in that: The water collection riser (3) also has a splash-proof structure (31), which is located inside the water collection riser (3). The splash-proof structure (31) forms a physical barrier between the probe of the humidity sensor (4) and the liquid surface of the water collection riser (3) to block droplets.

5. The coal mine electromechanical vibration detection device according to claim 4, characterized in that: The splash-proof structure (31) is an umbrella-shaped structure (311) made of a hydrophobic material.

6. The coal mine electromechanical vibration detection device according to claim 5, characterized in that: The umbrella-shaped structure (311) has a plurality of vent holes (312), which are provided on the umbrella-shaped structure (311) and are distributed at intervals around the axis of the umbrella-shaped structure (311).

7. The coal mine electromechanical vibration detection device according to claim 5, characterized in that: The splash-proof structure (31) also includes a metal filter element (313), which is located on the top of the umbrella-shaped structure (311) and is fitted onto the probe of the humidity sensor (4).

8. The electromechanical vibration detection device for coal mines according to claim 1, characterized in that: The vibration transmission assembly (5) includes a vibration contact (51) and an elastic element (52). The two ends of the vibration contact (51) are respectively connected to the electromechanical equipment and the side wall of the pressure chamber (12); the two ends of the elastic element (52) abut against the vibration contact (51) and the outer shell of the water tank (1).

9. A coal mine electromechanical vibration detection device according to claim 8, characterized in that: The vibration transmission assembly (5) further includes a transition plate (53) and a fastening assembly (8). The transition plate (53) is installed on the contact surface of the vibration contact (51). The transition plate (53) is provided with a plurality of sliding grooves (531). The sliding grooves (531) penetrate the wall thickness of the transition plate (53). The fastening assembly (8) includes an assembly (81) and a locking member (82). The assembly (81) is slidably installed in the sliding groove (531). The assembly (81) is used to connect with electromechanical equipment. The locking member (82) is used to lock the assembly (81) after it is assembled with the electromechanical equipment.

10. A coal mine electromechanical vibration detection device according to claim 1, characterized in that: The control system (6) is installed in the water tank (1); the coal mine electromechanical vibration detection device also includes an alarm (9), which is electrically connected to the control system (6).

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