Wide-area frequency measuring device for electric power system

Abstract

The invention relates to a power system wide-area frequency measuring device in the technical field of power systems, which comprises a shell, a detection system is mounted in an inner cavity of the shell, a wiring port connected with to-be-detected equipment is arranged on one side of the shell, the angle of the wiring port can be adjusted to adapt to the shell at different positions, and damage caused by stress concentration is avoided; according to the invention, through the design of the wiring port, the angle can be adjusted through the cooperation of the ball pocket structure and the ball body, so that the problem of stress concentration caused by improper installation position is avoided. The durability of the wiring port is improved, and the wiring port adapts to more diversified installation environments.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power systems, and in particular to a wide-area frequency measurement device for an electric power system. Background Art

[0002] The power system is an electric energy production and consumption system composed of power plants, transmission and transformation lines, power distribution stations and power consumption. In order to ensure the normal operation of the power system, a frequency measurement device is needed to measure the real-time status of the power system, and once the rate of change and amplitude of the power system exceed the limit value, it can be reported so that the staff can deal with it in time.

[0003] Traditional frequency measuring devices have the following defects: 1. Most devices are directly installed on external equipment by means of bolt fixing, etc. During installation and use, once the device collides with external objects, the frequency measuring device will be directly subjected to rigid impact, causing the frequency measuring device to be easily damaged, which brings inconvenience to daily monitoring work; 2. The wiring port is fixed on the side of the shell. Due to the limited installation position of the device, improper installation position may easily cause stress concentration on the wiring interface, which may lead to poor contact in the later stage; 3. The display screen lacks necessary protection.

[0004] The existing Chinese patent CN221765581U discloses a wide-area frequency measuring device for an electric power system, which is provided with a buffer device at the bottom of the shell and a protective device above the top display screen; under certain conditions, the defects 1 and 3 of the traditional frequency measuring device are solved, but the technical problem that the frequency measuring device is damaged due to collision with external objects during installation cannot be solved, and the device still has defect 2 of the traditional frequency measuring device and the following deficiencies: 1. The buffer device relies on springs and damping pads to absorb impact energy, but this mechanical buffering method is not sufficient to fully protect the internal components when facing a large impact.

[0005] To this end, we have designed a wide-area frequency measurement device for a power system to address at least one shortcoming that still exists in the prior art. Summary of the invention

[0006] In order to overcome the deficiencies in the background technology, the present invention discloses a wide-area frequency measurement device for an electric power system.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A wide-area frequency measurement device for an electric power system comprises a shell with a detection system installed in its inner cavity, a connection port connected to a device to be tested is provided on one side of the shell, and the angle of the connection port can be adjusted to adapt to shells in different positions to avoid damage due to stress concentration.

[0008] Preferably, the wiring port includes a fixed tube and a connecting tube, one end of the fixed tube has a ball pocket structure, one end of the connecting tube is provided with a sphere that cooperates with the ball pocket structure, so that the wiring port can adjust the angle by rotating the sphere in the ball pocket structure, and the other end of the connecting tube is provided with a wiring plug connected to the device to be tested.

[0009] Preferably, the fixed tube body is provided with a squeezing spring for squeezing the ball pocket structure, and the squeezing spring enables the ball pocket structure to hold the ball tightly, providing resistance when adjusting the angle, and preventing the connecting tube from shaking randomly.

[0010] Preferably, the fixed pipe sleeve is provided with a fixed sleeve connected with bolts, the fixed sleeve is fixedly connected to the side wall of the shell, and the inner end of the fixed sleeve has a reduced diameter portion for resisting one end of the extrusion spring.

[0011] Preferably, a support sleeve is provided at the inner end of the extrusion spring, and the support sleeve is sleeved on the fixed tube body to prevent the inner end of the extrusion spring from shaking.

[0012] Preferably, the ball pocket structure and the outside of the sphere are provided with bellows to prevent dust from entering the mating surface of the ball pocket structure and the sphere.

[0013] Preferably, a mounting seat is provided below the shell, and the mounting seat is connected to the shell via a plurality of buffer components, so as to provide buffering when the shell is impacted.

[0014] Preferably, the buffer assembly includes a first support spring and an elastic pull rope, the upper and lower ends of the first support spring are respectively connected to the bottom surface of the shell and the top surface of the mounting seat, the elastic pull rope is coaxially arranged inside the first support spring, and the upper and lower ends are respectively connected to the bottom surface of the shell and the top surface of the mounting seat.

[0015] Preferably, it also includes a protection component that can be installed at a suitable position of the shell as needed, and the protection component includes a magnetic attraction component that can be adsorbed on the edges or corners of the shell, and a protection block arranged outside the magnetic attraction component.

[0016] Preferably, a floating guardrail assembly is installed on the outside of the mounting seat, and the top of the floating guardrail assembly corresponds to extending above the shell. The floating guardrail assembly includes a floating frame that is sleeved on the periphery of the mounting seat, a second support spring is provided at the bottom of the floating frame, and a plurality of elastic struts are evenly spaced along the circumference of the top surface of the floating frame, and the upper end of the elastic strut is an arc-shaped portion that extends to the top of the shell and bends inward, and an elastic connecting rod is provided between the upper ends of adjacent elastic struts.

[0017] Due to the adoption of the above-mentioned technical solution, the present invention has the following beneficial effects: 1. The angle of the wiring port can be adjusted: Through the design of the wiring port, the angle can be adjusted through the cooperation of the ball pocket structure and the ball, thus avoiding the stress concentration problem caused by improper installation position. This not only improves the durability of the wiring port, but also adapts to more diverse installation environments.

[0018] 2. Buffer protection design: The buffer component between the shell and the mounting base. When the shell is impacted, the first support spring and the elastic pull rope in the buffer component work together to quickly consume energy, so that the shell quickly returns to a stable state, reducing the impact of the impact on the equipment. At the same time, the adjustable angle design of the wiring port can also adapt to the situation where the shell shakes when it is impacted.

[0019] 3. Design of protective components: The protective components composed of magnetic parts and protective blocks can be adjusted to the position of the edges or corners of the shell at any time as needed during the installation of the shell, providing additional physical protection for the equipment during installation and use to prevent damage caused by collision.

[0020] 4. Design of the floating guardrail assembly: The top of the floating guardrail assembly extends to the top of the shell, providing further external impact protection, especially against the impact of objects falling from above, ensuring the safety and reliability of the equipment. When one elastic strut is impacted, it will drive other elastic struts to deform and bear the impact force at the same time through the pulling of the elastic connecting rod, preventing the elastic strut that is directly impacted from deforming too much and causing the risk of plastic deformation or breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a right side view of the present invention; Figure 3 It is a structural schematic diagram of the wiring port in the present invention; Figure 4 This is a schematic diagram of the structure of the wiring port in the present invention without the fixing sleeve; Figure 5 It is a schematic diagram of the assembly structure of the protection component in the present invention.

[0022] In the figure: 1. Shell; 2. Wiring port; 21. Fixing tube; 211. Ball pocket structure; 22. Connecting tube; 221. Ball; 23. Wiring plug; 24. Extrusion spring; 25. Fixing sleeve; 26. Support sleeve; 3. Mounting seat; 4. Buffer assembly; 41. First support spring; 42. Elastic pull rope; 5. Protection assembly; 51. Magnetic element; 511. Card slot; 512. Connecting slot; 52. Protection block; 6. Floating guardrail assembly 6; 61. Floating frame; 62. Second support spring; 63. Elastic strut; 64. Elastic connecting rod. DETAILED DESCRIPTION

[0023] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application and are for the convenience of describing the present invention; it should be understood that if there are terms such as "end", "side", "end portion", "lateral", "lateral", "transverse", "longitudinal", etc. indicating directions or positional relationships, they only correspond to the length and width of the corresponding components, that is, the "end portion" indicates the head and tail areas in the length direction of the corresponding component, and the "side portion" indicates the head and tail areas in the width direction of the corresponding component; this is for the convenience of describing the present invention and is not to indicate or imply that the device or element referred to must have a specific direction.

[0024] Embodiment 1, in combination with the attached Figure 1-5 A wide-area frequency measuring device for an electric power system comprises a shell 1 with a detection system installed in its inner cavity, and a connection port 2 connected to a device to be tested is provided on one side of the shell 1.

[0025] In order to avoid the situation where the connection port 2 is damaged due to stress concentration caused by the influence of the installation position, the connection port 2 is redesigned. Figure 3-4 The wiring port 2 includes a fixed tube 21 and a connecting tube 22. One end of the fixed tube 21 has a ball pocket structure 211, and the ball pocket structure 211 has a plurality of axial slots evenly spaced along its circumference; one end of the connecting tube 22 is provided with a wiring plug 23, and the other end is provided with a sphere 221 that cooperates with the ball pocket structure 211. The function of adjusting the angle of the wiring plug 23 is achieved through the cooperation between the sphere 221 and the ball pocket structure 211.

[0026] Furthermore, the fixed tube 21 is provided with a squeezing spring 24 for squeezing the ball pocket structure 211. The squeezing spring 24 squeezes the ball pocket structure 211, causing the ball pocket structure 211 to shrink in diameter and hold the ball 221 tightly, thereby creating a certain resistance during the rotation of the connecting tube 22.

[0027] As required, the fixing tube 21 is sleeved with a fixing sleeve 25 connected by bolts, wherein the fixing sleeve 25 is fixedly connected to the side wall of the housing 1. Specifically, the inner end of the fixing sleeve 25 has a reduced diameter portion, and after installation, one end of the extrusion spring 24 abuts against the ball pocket structure 211, and the other end abuts against the reduced diameter portion of the fixing sleeve 25.

[0028] As required, in order to prevent the inner end of the extrusion spring 24 from shaking, a support sleeve 26 is provided at the inner end of the extrusion spring 24 , and the support sleeve 26 is sleeved on the body of the fixing tube 21 .

[0029] In order to prevent dust from entering the mating surface of the ball pocket structure 211 and the ball body 221, a bellows is provided outside the two (not shown in the figure). Specifically, one end of the bellows is sealed and connected to the body of the connecting tube 22, and the other end extends to the outside of the extrusion spring 24 and is sealed and connected to the body of the fixed tube 21. In other words, the extrusion spring 24 is also located outside the bellows.

[0030] A mounting base 3 is provided below the housing 1, and the mounting base 3 is connected to the housing 1 through a plurality of buffer components 4, that is, the buffer components 4 can provide buffering when the housing 1 is impacted, thereby preventing the detection system and the wiring port 2 from being damaged. The angle of the wiring port 2 can be adjusted, so that when the housing 1 is impacted, the housing 1 is shaken, and the ball 221 can rotate in the ball pocket structure 211, so that the wiring plug 23 can adapt to the housing 1 at different positions in real time, thereby preventing the wiring plug 23 from being damaged.

[0031] In a possible implementation, Figure 2 The buffer assembly 4 includes a first support spring 41 and an elastic pull rope 42. The upper and lower ends of the first support spring 41 are respectively connected to the bottom surface of the housing 1 and the top surface of the mounting seat 3. The elastic pull rope 42 is coaxially arranged inside the first support spring 41, and the upper and lower ends are respectively connected to the bottom surface of the housing 1 and the top surface of the mounting seat 3. It should be noted that the first support spring 41 and the elastic pull rope 42 use different elastic coefficients.

[0032] As required, the upper and lower ends of the first support spring 41 are respectively connected to the bottom surface of the shell 1 and the top surface of the mounting seat 3 through spring seats (not shown in the figure), and at this time, both ends of the elastic pull rope 42 are respectively connected to the corresponding spring seats.

[0033] To facilitate the installation of the shell 1, the shell 1 is detachably connected to the top of the spring seat. Preferably, the top spring seat has magnetic properties and is connected to the bottom surface of the shell 1 by magnetic attraction, that is, the time separation principle is adopted. When installing the frequency measuring device, the installation time of the mounting seat 3 and the shell 1 is staggered; specifically, the mounting seat 3 is first installed in a suitable position, and then the shell 1 is placed. This can effectively avoid the occurrence of installation difficulties due to heavy weight.

[0034] When the housing 1 is impacted, the housing 1 squeezes the first support spring 41, and the first support spring 41 is compressed and moves downward, which can effectively reduce the instantaneous strength of the housing 1 when it is impacted. After a certain period of time, the first support spring 41 begins to rebound, and the housing 1 will also rise. When the first support spring 41 returns to the initial state, due to the existence of inertia, the housing 1 will continue to rise. At this time, the elastic pull rope 42 and the first support spring 41 are pulled. After multiple up and down actions, the housing 1 returns to a stable state. In this process, under the full action of the first support spring 41 with two different elastic coefficients and the half action of the elastic pull rope 42, energy will be quickly consumed, so that the housing 1 quickly returns to a stable state.

[0035] In another possible implementation, the buffer component 4 may also use a relatively expensive buffer in the prior art, and the buffer structure and the like will not be described in detail herein.

[0036] In a possible implementation, Figure 5 In order to avoid the housing 1 directly colliding with other objects during the process of adjusting the position of the housing 1 when installing the housing 1, a protective component 5 is also included which can be installed at a suitable position of the housing 1 as required; it should be noted that during the installation process, almost all collisions occur at the edges and corners of the housing 1.

[0037] The protection component 5 includes a magnetic member 51 that can be attached to the edge or corner of the housing 1, and a protection block 52 is provided outside the magnetic member 51; In a possible embodiment, with respect to the edge of the shell 1, the magnetic attraction member 51 is an L-shaped cross-sectional structure, with both side edges respectively adsorbed onto adjacent side walls of the shell 1, and both side edges of the magnetic attraction member 51 are provided with a card slot 511 arranged along its length direction, and the protective block 52 has a card slot corresponding to the card slot.

[0038] In order to prevent the protection block 52 from moving along the length direction, a connecting groove 512 communicating with the two slots 511 is provided in the middle of the magnetic attraction member 51 ; the protection block 52 also has a locking portion corresponding to the locking connecting groove 512 .

[0039] In a possible embodiment, for the edges and corners of the shell 1, the magnetic attraction part 51 is L-shaped as a whole, and has an L-shaped cross-section structure, and the matching method with the protective block 52 can be adopted as described above; that is, the protective component 5 for the edges and corners of the shell 1 is made by two protective components 5 for the edges of the shell 1 being connected at 90 degrees.

[0040] Furthermore, the outer side surface of the protection block 52 is an arc-shaped surface.

[0041] When installing the housing 1, the protective component 5 can be installed at the edges or corners of the housing 1 close to other objects to prevent the housing 1 from directly colliding with other objects. After installation, the protective component 5 can be installed at the edges or corners of the housing 1 to play a subsequent protective role.

[0042] In order to prevent subsequent impact, a floating guardrail assembly 6 is installed on the outer side of the mounting seat 3, and the top thereof extends to the top of the shell 1.

[0043] In a possible implementation, Figure 1-2 The floating guardrail assembly 6 includes a floating frame 61 sleeved on the periphery of the mounting seat 3, a second support spring 62 is provided at the bottom of the floating frame 61, and a plurality of elastic struts 63 are evenly spaced along the circumference of the top surface of the floating frame 61, and the upper end of the elastic strut 63 is an arc-shaped portion extending above the shell 1 and bending inward. That is, the impact object first impacts the elastic strut 63, the elastic strut 63 is deformed by the force, and squeezes the floating frame 61 to move downward to buffer, thereby preventing the impact object from impacting the shell 1.

[0044] Furthermore, an elastic connecting rod 64 is provided between the upper ends of the connected elastic struts 63. In this way, when one of the elastic struts 63 is impacted, the other elastic struts 63 will be pulled by the elastic connecting rod 64 to deform and bear the impact force at the same time, thereby preventing the elastic strut 63 directly impacted from deforming too much and causing the risk of plastic deformation or breakage.

[0045] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A wide-area frequency measurement device for an electric power system, comprising a housing (1) in which a detection system is installed, characterized in that: A connection port (2) connected to the device to be tested is provided on one side of the housing (1); the connection port (2) can be adjusted in angle to adapt to housings (1) at different positions to avoid damage due to stress concentration.

2. The power system wide-area frequency measurement device according to claim 1, characterized in that: The wiring port (2) comprises a fixed tube (21) and a connecting tube (22); one end of the fixed tube (21) has a ball-shaped pocket structure (211); one end of the connecting tube (22) is provided with a ball (221) that cooperates with the ball-shaped pocket structure (211), so that the angle of the wiring port (2) can be adjusted by rotating the ball (221) in the ball-shaped pocket structure (211); and the other end of the connecting tube (22) is provided with a wiring plug (23) that is connected to the device to be tested.

3. The power system wide area frequency measurement device according to claim 2, characterized in that: The body of the fixed tube (21) is provided with a squeezing spring (24) for squeezing the ball pocket structure (211); the squeezing spring (24) enables the ball pocket structure (211) to hold the ball (221) tightly, thereby providing resistance when adjusting the angle and preventing the connecting tube (22) from shaking at will.

4. The power system wide-area frequency measurement device according to claim 3, characterized in that: The fixing tube (21) is sleeved with a fixing sleeve (25) and connected with the fixing sleeve (25) by bolts. The fixing sleeve (25) is fixedly connected to the side wall of the housing (1), and the inner end of the fixing sleeve (25) has a reduced diameter portion for contacting one end of the extrusion spring (24).

5. The power system wide area frequency measurement device according to claim 4, characterized in that: The inner end of the extrusion spring (24) is provided with a support sleeve (26), and the support sleeve (26) is sleeved on the body of the fixing tube (21) to prevent the inner end of the extrusion spring (24) from shaking.

6. The power system wide area frequency measurement device according to claim 2, characterized in that: The ball pocket structure (211) and the spherical body (221) are provided with bellows outside to prevent dust from entering the matching surfaces of the ball pocket structure (211) and the spherical body (221).

7. The power system wide-area frequency measurement device according to claim 1, characterized in that: A mounting seat (3) is provided below the shell (1); the mounting seat (3) is connected to the shell (1) via a plurality of buffer components (4), and can provide buffering when the shell (1) is impacted.

8. The power system wide area frequency measurement device according to claim 7, characterized in that: The buffer assembly (4) comprises a first support spring (41) and an elastic pull rope (42); the first support spring (41) has upper and lower ends respectively connected to the bottom surface of the housing (1) and the top surface of the mounting seat (3); the elastic pull rope (42) is coaxially arranged inside the first support spring (41), and has upper and lower ends respectively connected to the bottom surface of the housing (1) and the top surface of the mounting seat (3).

9. The power system wide area frequency measurement device according to claim 1, characterized in that: It also includes a protective component (5) that can be installed at a suitable position of the shell (1) as required, and the protective component (5) includes a magnetic attraction component (51) that can be adsorbed on the edge or corner of the shell (1), and a protective block (52) arranged outside the magnetic attraction component (51).

10. The power system wide area frequency measurement device according to claim 1, characterized in that: A floating guardrail assembly (6) is mounted on the outside of the mounting seat (3), the top of which corresponds to extending above the shell (1). The floating guardrail assembly (6) comprises a floating frame (61) sleeved on the periphery of the mounting seat (3), a second support spring (62) is provided at the bottom of the floating frame (61), a plurality of elastic struts (63) are evenly spaced along the circumference of the top surface of the floating frame (61), the upper end of the elastic struts (63) is an arc-shaped portion extending above the shell (1) and bending inward, and an elastic connecting rod (64) is provided between the upper ends of adjacent elastic struts (63).

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