A generator set alarm protection and synchronization control device

Abstract

A generator set alarm protection and synchronization control device includes a generator set and a graded alarm system inside a housing. The graded alarm system includes a temperature alarm component and a vibration alarm component. The temperature alarm component includes a temperature sensing mechanism, a temperature graded triggering mechanism, and a temperature actuator connected in sequence. The temperature sensing mechanism senses the heating state of the generator set and drives the temperature graded triggering mechanism to activate, which in turn triggers an alarm. The temperature graded triggering mechanism includes a rotatable temperature trigger wheel. The temperature sensing mechanism contacts the circumferential surface of the temperature trigger wheel and drives it to rotate. The surface of the temperature trigger wheel has trigger bosses with increasing height along the circumference, and a stopping groove is formed between the trigger bosses. The vibration alarm component is used to detect the vibration generated when the generator set shaft rotates, and can distinguish whether the fault is caused by overheating or abnormal vibration. It also provides resistance warning or hard lockout for closing operation when the unit is abnormal.

Description

Technical Field

[0001] This invention relates to an alarm protection and synchronization control device for generator sets, belonging to the field of generator set technology. Background Technology

[0002] As critical power supply equipment, the safe operation of generator sets is of paramount importance. Currently, generator sets are generally equipped with fault alarm systems, typically using electronic sensors (such as temperature and vibration sensors) to monitor operating parameters. The control system then triggers audible and visual alarms or remote signals when parameters become abnormal. This type of technology constitutes the mainstream of current technology.

[0003] However, existing alarm protection technologies still have some shortcomings. First, their alarm functions heavily rely on electrical and electronic components and complex control circuits. In the event of generator set malfunctions or harsh environments (such as strong electromagnetic interference or high temperatures), sensors and circuits may fail, causing the alarm system to malfunction and lose its protective function, thus requiring improved reliability. Second, existing systems typically only issue single, general alarm signals, making it difficult to intuitively distinguish whether the fault originates from overheating or abnormal vibration, nor can they clearly indicate the severity of the fault. This prevents maintenance personnel from immediately assessing the nature and urgency of the fault, thus affecting the efficiency of emergency repair decisions. Finally, common alarm systems are usually independent of the generator set's grid connection control process. After an alarm occurs, manual judgment is still required to determine whether grid connection is permitted. There is a lack of direct, mandatory mechanical linkage between the alarm and critical protective operations (such as prohibiting grid connection), posing a risk of human error. Summary of the Invention

[0004] In order to solve the above-mentioned problems in the existing technology, the present invention provides a generator set alarm protection and synchronization control device, which can distinguish whether the fault is caused by overheating or abnormal vibration, and achieves the function of providing resistance warning or hard lockout for closing operation when the unit is abnormal.

[0005] The technical solution of the present invention is as follows: A generator set alarm protection and synchronization control device includes a generator set body, which comprises a generator set and a housing, with the generator set housed inside the housing. It also includes a graded alarm system housed inside the housing. The graded alarm system includes a parallel temperature alarm component and a vibration alarm component. The temperature alarm component includes a temperature sensing mechanism, a temperature graded triggering mechanism, and a temperature actuator connected in sequence. The temperature sensing mechanism senses the generator set's heating state, thereby driving the temperature graded triggering mechanism to activate and triggering an alarm from the temperature actuator. The temperature graded triggering mechanism includes a rotatable temperature trigger wheel, with the temperature sensing mechanism contacting the circumferential surface of the temperature trigger wheel and driving it to rotate. The surface of the temperature trigger wheel has trigger bosses of increasing height along the circumferential direction, and a recessed stopping groove is formed between every two trigger bosses. The vibration alarm component is used to detect vibrations generated when the generator set shaft rotates.

[0006] The temperature sensing mechanism includes a temperature-sensing bimetallic strip fixed at one end inside the housing, with a temperature driving rod connected to the free end of the bimetallic strip; the end of the temperature driving rod is hinged to the circumferential surface of the temperature trigger wheel; the temperature actuation mechanism includes a temperature hammer connecting rod, one end of which is hinged to a fulcrum via a return torsion spring, and a driven arm on the temperature hammer connecting rod that abuts against the wheel surface of the temperature trigger wheel; a high-frequency sound board is installed inside the housing, located on the swing path of the other end of the temperature hammer connecting rod.

[0007] The temperature trigger wheel is coaxially fixed with a ratchet, and a check pawl is installed on the inner wall of the housing. The check pawl is pressed against the tooth groove of the ratchet by an elastic element. The ratchet and the check pawl cooperate so that the temperature trigger wheel can only rotate circumferentially along the surface of its trigger boss with increasing height under the push of the temperature drive rod and is locked, and cannot rotate in the opposite direction.

[0008] The vibration alarm component includes a vibration sensing mechanism, a vibration grading triggering mechanism, and a vibration actuator connected in sequence. The vibration sensing mechanism includes a pendulum suspended from the top of the housing via a universal joint, with a horizontal vibration drive rod fixedly connected to the side of the pendulum. The vibration grading triggering mechanism includes a guide plate disposed inside the housing, with a vibration trigger slider slidably connected to the guide plate. The end of the vibration drive rod contacts one side of the vibration trigger slider. The guide plate has spaced-apart locking grooves, and the bottom of the vibration trigger slider has an elastic pin. The vibration actuator includes a vibration hammer connecting rod hinged to the vibration trigger slider and a low-frequency striking plate disposed inside the housing, with the low-frequency striking plate positioned along the swing path of the vibration hammer connecting rod.

[0009] The vibration drive rod has a drive rack section at its end; a one-way pawl is rotatably connected to the vibration trigger slider, and the one-way pawl has a tendency to press its teeth against the drive rack section through an elastic element; the drive rack section cooperates with the one-way pawl, so that the oscillation of the vibration drive rod in the first direction can push the vibration trigger slider along the guide plate through the one-way pawl, while the oscillation of the vibration drive rod in the opposite direction forms a free stroke with the vibration trigger slider.

[0010] Among them, the guide plate path between adjacent card slot grooves is provided with equally spaced trigger teeth.

[0011] The system also includes a synchronization control component, which comprises a synchronization indicator, a closing handle, and a locking mechanism. The synchronization indicator is installed on the outside of the enclosure. The rotation of the closing handle drives the generator set grid-connected circuit breaker to close. The closing handle is rotatably mounted on the side wall outside the enclosure via a pivot. The end of the closing handle has a hand-held portion, and its proximal end has a blocking wedge-shaped portion. The locking mechanism includes a horizontally arranged locking rod and two linkage rods. The locking rod is slidably installed on the inner side wall of the enclosure and is parallel to the pivot of the closing handle. One end of the locking rod extends to the position where it intersects with the movement trajectory of the blocking wedge-shaped portion of the closing handle, and this end of the locking rod is formed into a wedge-shaped locking head. The inner ends of the two linkage rods are respectively hinged to a vibration trigger slider and a temperature trigger wheel, and the outer ends of the two linkage rods are respectively hinged to two wedge-shaped drive blocks. The end faces of the two wedge-shaped drive blocks cooperate with the inner ends of the locking rods, and the two wedge-shaped drive blocks are vertically slidably arranged inside the enclosure.

[0012] The present invention has the following beneficial effects: This invention utilizes a combination of a temperature-sensing bimetallic strip, a temperature-driven rod, a temperature-triggered wheel, and a temperature-impact hammer linkage to achieve the detection and graded alarm of generator set overheating faults. It achieves reliable operation without relying on external power and distinguishes overheating levels through different levels of impact sounds.

[0013] This invention achieves the locking and memorization of temperature alarm status by setting a ratchet and a check pawl on the temperature trigger wheel shaft; thus, the alarm status can be maintained until manual reset, facilitating fault tracing.

[0014] This invention achieves the conversion of reciprocating vibration into unidirectional, incremental step movement and locking of the vibration trigger slider by cooperating with the inertial pendulum, drive rack segment, one-way pawl, vibration trigger slider and guide plate slot in the vibration channel; it achieves the effect of cumulative judgment, graded indication of vibration faults and output of stable state signal.

[0015] This invention achieves the direct conversion of alarm system status signals into physical intervention for grid-connected closing operations by setting linkage rods and locking rods that are respectively linked to the temperature trigger wheel and vibration trigger slider, and by placing the wedge-shaped locking head of the locking rod on the movement path of the closing handle. This provides resistance warning or hard locking for the closing operation when the unit malfunctions, and structurally integrates protection logic and synchronization operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the temperature alarm component of the present invention; Figure 3 This is a schematic diagram of the ratchet and anti-return pawl of the present invention. Figure 4 This is a schematic diagram of the vibration alarm component of the present invention; Figure 5 This is a schematic diagram of the synchronization control component of the present invention; Figure 6 This is a schematic diagram of the layered adjustable guide plate structure of the present invention.

[0017] The reference numerals in the figure are as follows: 1. Generator set body; 2. Housing; 21. Temperature-sensing bimetallic strip; 22. Temperature drive rod; 31. Temperature trigger wheel; 32. Trigger boss; 33. Parking slot; 34. Ratchet; 35. Check pawl; 41. Temperature hammer connecting rod; 42. Return torsion spring; 43. Driven boom; 44. High-frequency sound board; 51. Universal joint; 52. Pendulum; 53. Vibration drive rod; 54. Drive rack section; 61. Guide plate; 62. Vibration trigger slider; 63. 64. Locking groove; 65. Elastic pin; 66. One-way pawl; 77. Triggering tooth; 78. Vibration hammer linkage; 79. Low-frequency striking plate; 90. Synchronization indicator; 91. Closing handle; 92. Rotary shaft; 93. Locking rod; 94. Linkage rod; 95. Wedge-shaped locking head; 611. Top plate; 612. Bottom plate; 613. Slide rail; 614. Slide plate; 81. Adjusting cam; 82. Linkage lever; 83. Support plate; 97. Wedge-shaped drive block. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0019] Please see Figures 1 to 6 The invention provides a technical solution: The generator set alarm protection and synchronization control device of this embodiment includes a generator set body 1, which includes a generator set and a housing 2. The generator set is located inside the housing 2. It also includes a graded alarm system installed inside the housing 2. The graded alarm system works in parallel with the generator set body. The graded alarm system includes a parallel temperature alarm component and a vibration alarm component, which can independently monitor the two key faults of the generator set: overheating and abnormal vibration.

[0020] The temperature alarm component includes a temperature sensing mechanism, a temperature graded triggering mechanism, and a temperature actuator connected in sequence; The temperature sensing mechanism detects the heating status of the generator set, thereby driving the temperature grading trigger mechanism to act and triggering an alarm by the temperature actuator. The temperature sensing mechanism includes a temperature-sensing bimetallic strip 21, one end of which is fixed to the inner wall of the enclosure 2 (near the heat-generating area) by fasteners. This temperature-sensing bimetallic strip 21 is made of two metals with different coefficients of thermal expansion pressed together. A temperature-driven rod 22 is connected to its free end, and the end of the temperature-driven rod 22 is connected to a temperature-grading triggering mechanism. When the temperature inside the enclosure 2 rises due to a generator set malfunction, the temperature-sensing bimetallic strip 21 bends towards the side with the smaller coefficient of thermal expansion due to the different amounts of expansion on both sides. This bending deformation drives the temperature-driven rod 22 to produce a linear displacement.

[0021] The temperature graded triggering mechanism includes a rotatable temperature triggering wheel 31. The temperature sensing mechanism contacts the circumferential surface of the temperature triggering wheel 31 and drives the temperature triggering wheel 31 to rotate. The wheel surface of the temperature triggering wheel 31 is provided with triggering bosses 32 with increasing height along the circumferential direction. A recessed parking groove 33 is formed between every two triggering bosses 32 on the wheel surface. When the temperature is low and within the normal range, the displacement of the temperature drive rod 22 is small, and the temperature trigger wheel 31 does not rotate or only rotates slightly. As the temperature gradually increases, the displacement of the drive rod 22 accumulates, pushing the temperature trigger wheel 31 to rotate sequentially over each trigger boss 32; each time it rotates over a trigger boss 32, the temperature reaches a new threshold, and the corresponding alarm level increases by one level; the parking groove 33 provides a stable intermittent stopping position for the trigger wheel, ensuring the clarity and specificity of each alarm level.

[0022] The temperature actuator includes a temperature hammer link 41, one end of which is hinged to a fulcrum via a return torsion spring 42, allowing it to swing around the fulcrum. A driven arm 43 is mounted on the link, the end of which, under the pressure of the return torsion spring 42, always rests against the contour of the temperature trigger wheel 31. A high-frequency sound board 44 is fixedly installed inside the housing 2, positioned along the swing path of the other free end of the temperature hammer link 41.

[0023] When the temperature rises and drives the temperature trigger wheel 31 to rotate, the trigger boss 32 on its surface lifts the driven arm 43 against it, causing the entire temperature hammer linkage 41 to swing against the force of the return torsion spring 42 and accumulate energy. Once the highest point of the boss has passed, the moment the driven arm 43 falls into the next parking slot 33, the temperature hammer linkage 41 swings back rapidly under the drive of the return torsion spring 42, and its free end strikes the high-frequency sound board 44 forcefully, emitting a crisp high-frequency sound, completing an alarm output. The higher the temperature, the higher the boss the trigger wheel passes, the greater the energy accumulated and released by the hammer linkage, and the louder the striking force and sound, thus enabling the severity level of the alarm to be distinguished audibly.

[0024] The high-frequency sound board 44 can be specially designed or adopt any structure that can realize the early warning and alarm functions in the existing technology, or it can adopt an alarm button structure. For example, an alarm button structure with a built-in pressure sensor can be adopted. The button is triggered by the temperature hammer linkage 41 striking it with different forces, so that the sensor outputs electrical signals of different intensities, thereby driving the alarm connected to it to emit alarm sounds of different sizes.

[0025] It is worth mentioning that the edge contour between the trigger boss 32 and the parking groove 33 is set with a smooth finish to prevent the driven boom 43 from having difficulty crossing.

[0026] As a mature temperature-sensitive element, the temperature-sensing bimetallic strip 21 directly converts temperature into bending response quickly. Secondly, its structure is extremely simple, consisting of only one piece of metal. Compared with conventional piston rods filled with thermal expansion and contraction media, it avoids the risk of sensor failure due to media leakage or piston jamming, and has higher reliability in the high-temperature and vibration environment of generator sets during long-term operation.

[0027] To ensure that the alarm status is recorded and maintained until the fault is detected and handled manually after troubleshooting, this device has a ratchet 34 coaxially fixed on the shaft of the temperature trigger wheel 31, and a check pawl 35 is installed at a corresponding position on the inner wall of the housing 2. The check pawl 35, through an elastic element such as a compression spring or a sheet-like spring, ensures that its pawl tip always tends to press against the tooth groove of the ratchet 34. The ratchet 34 and the check pawl 35 cooperate to form a one-way locking mechanism.

[0028] This design ensures that the temperature trigger wheel 31, driven by the temperature drive rod 22, can only rotate in one direction along the increasing height of the trigger boss 32 on its wheel surface (i.e., the direction of increasing alarm level), and is immediately locked at each position by the anti-return pawl 35, preventing it from rotating in the opposite direction due to occasional temperature fluctuations or slight retraction of the drive rod. This design guarantees that the system can record the highest temperature level ever reached by the generator. Operators can view the position of the temperature trigger wheel 31 through a transparent observation window on the enclosure, thus clearly identifying the fault history.

[0029] More importantly, the locked angle position of the temperature trigger wheel 31 is a definite mechanical signal that can directly drive the synchronous control component to achieve grid-connected interlocking protection under abnormal conditions, thereby associating the alarm record with the synchronous connection protection.

[0030] The vibration alarm component is used to detect the vibration generated when the generator shaft rotates; the vibration alarm component includes a vibration sensing mechanism, a vibration grading triggering mechanism and a vibration actuator connected in sequence.

[0031] The vibration sensing mechanism includes a pendulum 52 suspended from the top of the housing 2 via a universal joint 51. A horizontal vibration drive rod 53 is fixedly connected to the pendulum 52.

[0032] When the generator set is operating normally, the housing 2 stabilizes, and the pendulum 52 hangs down naturally. If the rotating components of the generator set, such as the rotor, experience abnormal vibrations due to imbalance or looseness, the housing 2 itself will oscillate back and forth. However, due to inertia, the suspended pendulum 52 tends to remain stationary, thus creating a relative oscillation between itself and the moving housing 2. This relative oscillation drives the vibration drive rod 53 to sweep back and forth like a pendulum, converting the vibration into the oscillation of the vibration drive rod 53.

[0033] The function of the vibration grading triggering mechanism is to convert the above reciprocating oscillation into a graded state.

[0034] It mainly includes a guide plate 61 disposed inside the housing 2, and a vibration trigger slider 62 slidably connected to the guide plate 61. The end of the vibration drive rod 53 contacts one side of the vibration trigger slider 62 and is used to push the vibration trigger slider 62.

[0035] To achieve reliable staged propulsion, a drive rack section 54 is specially provided at the end of the vibration drive rod 53, and a one-way pawl 65 is hinged to the vibration trigger slider 62 via a rotating shaft. Under the action of an elastic element such as a compression spring or torsion spring, the one-way pawl 65 always tends to press against the tooth surface of the drive rack section 54.

[0036] The cooperation between the one-way pawl 65 and the drive rack segment 54 transforms the reciprocating oscillation of the vibration drive rod 53 into a one-way, incremental propulsion of the vibration trigger slider 62.

[0037] Specifically, when the housing vibration drives the drive rod 53 to swing in one direction, the tooth surface of the drive rack segment 54 will press against the one-way pawl 65, thereby rigidly pushing the entire vibration trigger slider 62 to move a small distance to the right along the guide plate 61. When the drive rod 53 swings back in the opposite direction with the vibration, the back of the tooth of the drive rack segment 54 will slide over the inclined surface of the one-way pawl 65. At this time, the one-way pawl 65 and the drive rack segment 54 slip, and the vibration trigger slider 62 will not be driven to retract.

[0038] Therefore, regardless of the reciprocating vibration, as long as the vibration persists, the vibration trigger slider 62 will be pushed towards a higher alarm level. The stronger the vibration, the larger the amplitude of a single swing may be, and the longer the distance the slider is pushed forward. This ensures that the position of the vibration trigger slider 62 can cumulatively reflect the severity of the vibration.

[0039] The positioning of the vibration-triggered slider 62 is accomplished by the locking groove 63 and the elastic pin 64 on the guide plate 61.

[0040] The guide plate 61 is provided with a series of locking grooves 63 at intervals, each locking groove 63 representing an alarm level. When the slider is pushed above a certain locking groove 63 by the one-way pawl, the elastic pin 64 at its bottom will fall into the locking groove 63 under its own spring force, thereby locking the vibration trigger slider 62 in that position, thus realizing the recording function of vibration fault level.

[0041] Between adjacent locking grooves 63, the guide plate 61 is also provided with trigger teeth 66. The function of trigger teeth 66 is to set resistance. Only when the vibration intensity is sufficient to provide the thrust to overcome the resistance will the vibration trigger slider 62 advance. This helps to avoid malfunctions caused by slight vibrations.

[0042] The vibration actuator includes a vibration hammer link 71, the root of which is hinged to the vibration trigger slider 62, and a low-frequency striking plate 72 fixed inside the housing 2, which is located on the swing path of the free end of the hammer link 71.

[0043] When the vibration trigger slider 62 is pushed and finally engages in a new locking groove 63, the movement of the slider will cause the vibratory hammer connecting rod 71 to swing at a certain angle through the hinge point. This swing causes the free end of the hammer connecting rod 71 to strike the low-frequency striking plate 72, producing a low, muffled sound, which can be distinguished from the high-frequency sound of the temperature alarm, making it easier for personnel to identify the type of fault.

[0044] It also includes a synchronization control component, which includes a synchronization indicator 91, a closing handle 92, and a locking mechanism. Synchronization indicator 91 is installed on the outside of enclosure 2. As a standard instrument, synchronization indicator 91 is installed in a prominent position on the operation panel outside enclosure 2 to indicate the voltage difference, frequency difference, and phase difference between the power grid and the generator to be connected. Based on the swing of its pointer, the operator manually adjusts the speed and voltage of the generator set until the pointer approaches the center synchronization point, creating the electrical conditions for the closing operation.

[0045] The closing handle 92 is the mechanical interface for performing grid connection operations. It is rotatably mounted on the side wall of the housing 2 via a rotating shaft 93 for easy operation. The handheld part at the end of the closing handle 92 is ergonomically designed, with a wedge-shaped support near the rotating shaft. The rotation of the closing handle 92, through its internal or connected transmission mechanism, ultimately transmits the operating force to the tripping or energy storage release mechanism of the generator grid connection circuit breaker, driving the main contacts of the circuit breaker to close and completing the physical connection between the generator set and the power grid. This transmission mechanism is a well-known and conventional design in the field of manual circuit breaker operation, which can be understood and implemented by those skilled in the art, so its specific structure will not be described in detail here.

[0046] The locking mechanism includes a horizontally positioned locking rod 94 and two linkage rods 95. The locking rod 94 is mounted on the inner side of the side wall of the housing 2 via a sliding support, and its installation direction is parallel to the rotating shaft 93 of the closing handle 92 to ensure smooth sliding. One end of the locking rod 94 is machined into a wedge-shaped locking head 96, and the position of this end extends so that it intersects in space with the movement trajectory of the blocked wedge-shaped part near the closing handle 92. The inner ends of the two linkage rods 95 are respectively hinged to the vibration trigger slider 62 and the temperature trigger wheel 31, and the outer ends of the two linkage rods 95 are respectively hinged to two wedge-shaped drive blocks 97. The end faces of the two wedge-shaped drive blocks 97 cooperate with the inner ends of the locking rod 94, and the two wedge-shaped drive blocks 97 are vertically slidably disposed inside the housing 2.

[0047] When the generator set is in a completely normal state, both the temperature trigger wheel 31 and the vibration trigger slider 62 are in their initial positions. The force transmitted through the linkage rod 95 causes the locking rod 94 to be fully retracted under the action of its return spring. At this time, the wedge-shaped locking head 96 is completely disengaged from the swing path of the blocking wedge part on the closing handle 92, and the operator can rotate the closing handle 92 without obstruction to complete the grid connection.

[0048] When a primary abnormality occurs in the generator set, the temperature trigger wheel 31 of the alarm system rotates at a certain angle, or the vibration trigger slider 62 moves and engages with the first locking groove 63. This positional change is transmitted to the wedge drive block 97 via the corresponding linkage rod 95. The vertical movement of the wedge drive block 97 will push the locking rod 94 to slide horizontally to partially extend. In this position, the wedge-shaped locking head 96 of the locking rod 94 has partially intruded into the movement trajectory of the blocking wedge portion of the closing handle. When the operator attempts to close the circuit, the blocking wedge portion will press against the inclined surface of the wedge-shaped locking head 96, generating significant mechanical resistance, making operation difficult. However, if force is applied, it is still possible to forcefully squeeze past the inclined surface of the wedge-shaped locking head 96 to complete the closing. This process provides the operator with a tactile warning, indicating that there is an abnormality in the system.

[0049] When the abnormal condition worsens and reaches a severe level, the alarm component moves to a higher level, thereby pushing the locking lever 94 further to the fully extended hard-lock position via the linkage lever 95. At this point, the vertical end face of the locking lever 94 (not the inclined surface of the wedge-shaped locking head 96) is completely blocked in the path of the wedge-shaped part of the closing handle 92. At this time, no matter how much force the operator applies, the rotation of the closing handle 92 will be locked, preventing any closing operation. This forcibly prohibits the generator set from connecting to the grid under severe fault conditions, thus avoiding equipment damage or grid impact accidents that may be caused by connecting to the grid while faulty.

[0050] In engineering practice, increased temperature can cause thermal expansion of metal parts and changes in fit clearances. It can also reduce the viscosity of lubricating oil and worsen lubrication. These factors can make the unit more susceptible to abnormal vibrations under the same mechanical excitation. In other words, the vibration sensitivity of the unit will increase under high temperature conditions.

[0051] As a preferred embodiment, the guide plate 61 employs a layered adjustable structure to achieve temperature-vibration linkage. Specifically, the guide plate 61 includes a top plate 611 and a bottom plate 612, with a locking groove 63 and a triggering tooth 66 disposed on the top surface of the top plate 611. A slide rail 613 is provided on the side wall at the junction of the top plate 611 and the bottom plate 612, and the side wall of the vibration triggering slider 62 is slidably connected to the slide rail 613 via a pulley, thereby being guided.

[0052] To achieve sensitivity adjustment, a sliding plate 614 is slidably connected between the top plate 611 and the bottom plate 612. The up-and-down movement of the sliding plate 614 can change the actual distance of the slide track 613 formed at the junction of the top plate 611 and the bottom plate 612. In the linkage control part, an adjusting cam 81 is coaxially arranged on the rotating shaft of the temperature trigger wheel 31. The end of the adjusting cam 81 is rotatably connected to a linkage lever 82, and the other end of the linkage lever 82 is fixedly connected to the bottom of the bottom plate 612 through a support plate 83.

[0053] When the generator set temperature is normal, the temperature trigger wheel 31 is in the initial position, the profile of the adjusting cam 81 makes the linkage lever 82 in the initial angle, and then makes the slide plate 614 in a default position. At this time, the spacing of the slide rail 613 is the preset value, and the friction force that the vibration trigger slider 62 needs to overcome to slide is the reference value.

[0054] When the unit overheats, causing the temperature trigger wheel 31 to rotate significantly, the coaxial adjusting cam 81 rotates accordingly. The profile of the adjusting cam 81 pushes the linkage lever 82 to swing around its hinge point with the support plate 83. The swinging of the linkage lever 82 drives the connected slide plate 614 to slide between the top plate 611 and the bottom plate 612. The movement of the slide plate 614 changes the spacing of the slide rails 613: if the slide plate 614 moves upward, the spacing of the slide rails 613 narrows, increasing the clamping force on the side wall pulley of the vibration trigger slider 62 and increasing the sliding friction resistance. Through this linkage, the temperature status of the generator set is converted into real-time adjustment of the moving resistance of the vibration trigger slider 62 in the vibration alarm channel. This achieves adaptive adjustment of the vibration alarm sensitivity based on temperature.

[0055] It is worth mentioning that when the temperature trigger wheel 31 rotates slightly, the spacing of the slide rail 613 has a certain margin and does not affect the operation of the pulley. The above structure only works when the temperature is too high to affect the vibration.

[0056] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A generator set alarm protection and synchronization control device, comprising a generator set body (1), wherein the generator set body (1) includes a generator set and a housing (2), wherein the generator set is disposed inside the housing (2), characterized in that: It also includes a graded alarm system installed inside the housing (2); the graded alarm system includes a parallel temperature alarm component and a vibration alarm component, the temperature alarm component includes a temperature sensing mechanism, a temperature graded triggering mechanism and a temperature execution mechanism connected in sequence; the temperature sensing mechanism senses the heating state of the generator set and drives the temperature graded triggering mechanism to act, and the temperature execution mechanism alarms; the temperature graded triggering mechanism includes a rotatable temperature trigger wheel (31), the temperature sensing mechanism contacts the circumferential surface of the temperature trigger wheel (31) and drives the temperature trigger wheel (31) to rotate; the wheel surface of the temperature trigger wheel (31) is provided with trigger bosses (32) with increasing height along the circumferential direction, and the wheel surface forms a recessed parking groove (33) between every two trigger bosses (32); the vibration alarm component is used to detect the vibration generated when the generator set shaft rotates.

2. The generator set alarm protection and synchronization control device as described in claim 1, characterized in that: The temperature sensing mechanism includes a temperature-sensing bimetallic strip (21) with one end fixed inside the housing (2), and a temperature driving rod (22) connected to the free end of the temperature-sensing bimetallic strip (21); the end of the temperature driving rod (22) is hinged to the circumferential surface of the temperature trigger wheel (31); the temperature actuation mechanism includes a temperature hammer connecting rod (41), one end of the temperature hammer connecting rod (41) is hinged to the fulcrum through a reset torsion spring (42), and a driven arm (43) is provided on the temperature hammer connecting rod (41) that abuts against the wheel surface of the temperature trigger wheel (31); a high-frequency sound board (44) is provided inside the housing (2), and the high-frequency sound board (44) is located on the swing path of the other end of the temperature hammer connecting rod (41).

3. The generator set alarm protection and synchronization control device as described in claim 2, characterized in that: The temperature trigger wheel (31) is coaxially fixed with a ratchet (34), and a check pawl (35) is installed on the inner wall of the housing (2); the check pawl (35) is pressed against the tooth groove of the ratchet (34) by an elastic element; wherein, the ratchet (34) and the check pawl (35) cooperate so that the temperature trigger wheel (31) can only rotate circumferentially along the increasing height of the trigger boss (32) on its wheel surface and be locked under the push of the temperature drive rod (22), and cannot rotate in the opposite direction.

4. The generator set alarm protection and synchronization control device as described in claim 1, characterized in that: The vibration alarm assembly includes a vibration sensing mechanism, a vibration grading triggering mechanism, and a vibration execution mechanism connected in sequence. The vibration sensing mechanism includes a pendulum (52) suspended from the top of the housing (2) via a universal joint (51). A horizontal vibration drive rod (53) is fixedly connected to the side of the pendulum (52). The vibration grading triggering mechanism includes a guide plate (61) disposed inside the housing (2). A vibration triggering slider (62) is slidably connected to the guide plate (61). The end of the vibration drive rod (53) contacts one side of the vibration triggering slider (62). The guide plate (61) is provided with spaced slotting grooves (63). The bottom of the vibration triggering slider (62) is provided with an elastic pin (64). The vibration execution mechanism includes a vibration hammer connecting rod (71) hinged to the vibration triggering slider (62) and a low-frequency striking plate (72) disposed inside the housing (2). The low-frequency striking plate (72) is disposed on the swing path of the vibration hammer connecting rod (71).

5. The generator set alarm protection and synchronization control device as described in claim 4, characterized in that: The end of the vibration drive rod (53) is provided with a drive rack section (54); a one-way pawl (65) is rotatably connected to the vibration trigger slider (62), and the one-way pawl (65) has a tendency to press its pawl teeth against the drive rack section (54) through an elastic element; the drive rack section (54) cooperates with the one-way pawl (65) so that the swing of the vibration drive rod (53) in the first direction can push the vibration trigger slider (62) to move along the guide plate (61) through the one-way pawl (65), while the swing of the vibration drive rod (53) in the opposite direction forms a free stroke with the vibration trigger slider (62).

6. The generator set alarm protection and synchronization control device as described in claim 4, characterized in that: The guide plate (61) between adjacent slot grooves (63) is provided with equidistant trigger teeth (66).

7. The generator set alarm protection and synchronization control device as described in claim 4, characterized in that: It also includes a synchronization control component, which includes a synchronization indicator (91), a closing handle (92), and a locking mechanism. The synchronization indicator (91) is installed outside the enclosure (2). The rotation of the closing handle (92) is used to drive the generator set grid-connected circuit breaker to close. The closing handle (92) is rotatably mounted on the side wall outside the enclosure (2) via a rotating shaft (93). The end of the closing handle (92) has a hand-held part, and its proximal end has a blocking wedge-shaped part. The locking mechanism includes a horizontally arranged locking rod (94), two linkage rods (95), and two wedge-shaped drive blocks (97). The locking rod (94) is slidably installed. The locking rod (94) is located on the inner side wall of the housing (2) and is parallel to the rotating shaft (93) of the closing handle (92). The outer end of the locking rod (94) extends to the position where it intersects with the movement trajectory of the blocking wedge part of the closing handle (92). This end of the locking rod (94) is formed into a wedge-shaped locking head (96). The inner ends of the two linkage rods (95) are respectively hinged to the vibration trigger slider (62) and the temperature trigger wheel (31). The outer ends of the two linkage rods (95) are respectively hinged to the two wedge-shaped drive blocks (97). The end faces of the two wedge-shaped drive blocks (97) cooperate with the inner ends of the locking rod (94). The two wedge-shaped drive blocks (97) are vertically slidably arranged inside the housing (2).

8. The generator set alarm protection and synchronization control device as described in claim 4, characterized in that: The guide plate (61) includes a top plate (611) and a bottom plate (612). The locking groove (63) and the triggering tooth (66) are provided on the top surface of the top plate (611). A slide (613) is provided on the side wall where the top plate (611) and the bottom plate (612) meet. The side wall of the vibration triggering slider (62) is slidably connected to the slide (613) through a pulley. A sliding plate (614) is slidably connected between the top plate (611) and the bottom plate (612) to change the distance between the slide (613) where the top plate (611) and the bottom plate (612) meet. An adjusting cam (81) is provided on the rotating shaft of the temperature triggering wheel (31). A linkage lever (82) is rotatably connected to the end of the adjusting cam (81). The other end of the linkage lever (82) is fixedly connected to the bottom of the bottom plate (612) through a support plate (83).

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