An alarm device applied to a density relay valve and a use method thereof

Abstract

The application discloses a kind of warning device and use method applied to density relay valve, it is related to power distribution equipment field, and the warning device applied to density relay valve includes knob, linkage assembly and control component, knob is nested with relay valve cooperation, linkage assembly includes fixed link with knob and switch piece controlled by link, and the power supply is realized by the setting of switch piece to on-off, control component includes power supply and warning piece controlled by switch piece, warning information can be sent to staff by warning piece, staff is constantly prompted, so that staff can know that he needs to close relay valve after maintenance ends, will not lead to forget, staff rotates relay valve to drive knob rotation, triggers power switch, so that warning piece constantly sends early warning prompt.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment, in particular to an alarm device applied to a density relay valve and a use method. BACKGROUND

[0002] SF6 density relay is a device for reflecting SF6 gas pressure, which is widely used in various devices in substations and has alarm and locking functions. According to the operation and maintenance regulations of the Southern Power Grid, SF6 density relay is usually checked once every six years, and the SF6 density relay valve needs to be closed before checking and restored after checking. However, this operation is a manual operation, and it is impossible to avoid the situation that the SF6 density relay valve is not opened after work due to the negligence of the staff, which will cause the SF6 density relay to be disconnected from the device gas chamber, causing the SF6 density relay meter pressure indicator to fail to correctly feedback the device gas chamber pressure value. If the residual gas in the meter pressure leaks and the meter pressure gradually decreases, the SF6 low pressure alarm or locking will be triggered, and the SF6 density relay locking will form a broken circuit breaker control loop, which cannot normally operate when a fault occurs and causes an overstep trip. If the device gas leaks and the SF6 density relay cannot normally reflect the situation, the circuit breaker will operate when a fault occurs, but the SF6 gas density cannot completely extinguish the arc, thereby causing damage such as explosion of the device. In addition, under the requirement of safety distance when some devices are live, the staff needs to power off the interval to handle the SF6 density relay alarm on site, which will increase the power-off time and affect the stability of the power grid.

[0003] In summary, the problem of SF6 density relay misoperation caused by the staff not opening the SF6 density relay valve after completing the SF6 density relay checking needs to be solved. SUMMARY

[0004] In view of the above problems existing in the alarm device applied to the density relay valve, the present application is proposed.

[0005] Therefore, the problem to be solved by the present application is how to remind the staff to close the valve.

[0006] To solve the above technical problems, the present application provides the following technical scheme: an alarm device applied to a density relay valve, comprising a knob, the knob is nested with the relay valve; a linkage assembly comprising a connecting rod fixedly connected with the knob and a switch controlled by the connecting rod; a control assembly comprising a power supply and an alarm controlled by the switch; the rotation of the knob is driven by twisting the relay valve.

[0007] As a preferred scheme of the alarm device applied to the density relay valve, the knob is provided with a clamping edge, and the rotation of the relay valve is driven by the clamping edge.

[0008] As a preferred scheme of the application, the switch part comprises a rotating rod movably connected to the end of the connecting rod, and the rotating rod rotates in the shell; the switch part further comprises a spring connected to one end of the rotating rod, and a power-on button corresponding to the rotating position of the other end of the rotating rod.

[0009] As a preferred scheme of the application, the power-on button is electrically connected to the power supply; when the power-on button is pressed, the power supply is in a power-on state, and when the power-on button is not pressed, the power supply is in a power-off state.

[0010] As a preferred scheme of the application, the warning part comprises a signal unit electrically connected to the power supply and a self-checking module; the signal unit sends a checking instruction to the self-checking module.

[0011] As a preferred scheme of the application, the warning part further comprises a warning light and a buzzer electrically connected to the power supply; after the checking instruction is completed, the signal unit sends a working instruction to the warning light and the buzzer.

[0012] As a preferred scheme of the application, the spring has a spring force smaller than the force required to rotate the knob; the shell is provided with a sliding groove, and the connecting rod slides along the sliding groove.

[0013] Another object of the application is to provide a use method of the warning device applied to the density relay valve: the knob is sleeved on the relay valve; the relay valve is opened; the warning light and the buzzer start to emit sound and light alarms.

[0014] As a preferred scheme of the application, the relay valve is rotated clockwise to open the relay valve, and the warning light and the buzzer continuously emit alarms.

[0015] As a preferred scheme of the application, the relay valve is rotated counterclockwise to close the relay valve, and the warning light and the buzzer stop emitting alarms.

[0016] The application has the following advantages:

[0017] 1. The overall device has a simple structure, low production cost and low operation cost.

[0018] 2. The sound-light coordinated reminding can ensure that the staff can receive the alarm signal in the work site, and achieve good reminding effect;

[0019] 3. Meanwhile, the self-checking function of the device improves its operation stability and reliability;

[0020] 4. The alarm with appropriate frequency can effectively remind the staff, and will not cause the staff's negative emotions. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:

[0022] Figure 1 The scene diagram of the alarm device applied to the density relay valve.

[0023] Figure 2 The linkage assembly structure diagram of the alarm device applied to the density relay valve.

[0024] Figure 3 The alarm flowchart of the alarm device applied to the density relay valve. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings of the specification.

[0026] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0027] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. In this specification, "in one embodiment" appearing in different places does not mean the same embodiment, nor does it mean that the embodiment is mutually exclusive or selective with other embodiments.

[0028] Embodiment 1

[0029] Reference Figure 1For the first embodiment of the application, the embodiment provides a warning device applied to a density relay valve, the warning device applied to the density relay valve comprises a knob 100, a linkage assembly 200 and a control assembly 300, the knob 100 is nested with the relay valve, so that the knob 100 can be rotated synchronously when the relay valve is rotated, and then the linkage assembly 200 is driven to move, so that the control assembly 300 continuously sends a warning to the staff.

[0030] Specifically, the knob 100 is nested with the relay valve.

[0031] Preferably, the linkage assembly 200 comprises a connecting rod 201 fixedly connected with the knob 100 and a switch piece 202 controlled by the connecting rod 201, and the switch piece 202 is arranged to realize the on-off of the power supply 301.

[0032] Preferably, the control assembly 300 comprises a power supply 301 controlled by the switch piece 202 and a warning piece 302, the warning piece 302 can send a warning information to the staff, and continuously prompts the staff, so that the staff can know that the relay valve needs to be closed after the maintenance is completed, and forgetting is avoided.

[0033] The knob 100 is rotated by twisting the relay valve.

[0034] In use, the staff rotates the knob 100 by rotating the relay valve, triggers the power supply 301 switch, and makes the warning piece 302 continuously send a pre-warning prompt.

[0035] Embodiment 2

[0036] Reference Figure 2 For the second embodiment of the application, the embodiment is based on the previous embodiment.

[0037] Specifically, the knob 100 is nested with the relay valve.

[0038] Preferably, the switch piece 202 comprises a rotating rod 202a movably connected with the end of the connecting rod 201, and the rotating rod 202a rotates in the shell A.

[0039] The switch piece 202 further comprises a spring 202b connected with one end of the rotating rod 202a and a power-on button 202c corresponding to the rotating position of the other end of the rotating rod 202a, when one end of the rotating rod 202a is pulled by the connecting rod 201, the other end presses the power-on button 202c, so that the power supply 301 is turned on.

[0040] Preferably, the power-on button 202c is electrically connected with the power supply 301.

[0041] The pressed state of the power-on button 202c is in the power-on state of the power supply 301, and the unpressed state of the power-on button 202c is in the power-off state of the power supply 301, and the unpressed state refers to the state that the knob 100 is not rotated.

[0042] Preferably, the warning member 302 includes a signal unit 302a electrically connected with the power supply 301 and a self-checking module 302b.

[0043] The signal unit 302a sends a checking instruction to the self-checking module 302b.

[0044] Preferably, the warning member 302 further includes a warning light 302c and a buzzer 302d electrically connected with the power supply 301.

[0045] After the checking instruction is finished, the signal unit 302a sends a working instruction to the warning light 302c and the buzzer 302d.

[0046] Preferably, the rebound force of the spring 202b is smaller than the force required for rotating the knob 100.

[0047] The shell A is provided with a sliding groove H, and the connecting rod 201 slides along the sliding groove H.

[0048] In use, first, the staff puts the knob 100 on the relay valve, so that when the valve is rotated, the card edge 101 can be pressed, and then the valve is rotated while the knob 100 is rotated. It is worth noting that when the knob 100 is rotated, the shell A is artificially fixed, so when the knob 100 is rotated, the connecting rod 201 will slide in the sliding groove H, and with the movement of the connecting rod 201, the rotating rod 202a will be pulled to rotate, and then one end of the rotating rod 202a will press the power-on button 202c, so that the power supply 301 is powered on, and the warning member 302 sends an instruction signal.

[0049] Embodiment 3

[0050] Reference Figure 3 For the third embodiment of the present application, this embodiment is based on the previous two embodiments.

[0051] Specifically, the knob 100 is put on the relay valve;

[0052] The relay valve is opened;

[0053] The warning light 302c and the buzzer 302d start to sound and light alarm.

[0054] Preferably, the relay valve is rotated clockwise to open the relay valve, and the warning light 302c and the buzzer 302d continuously give a warning.

[0055] Preferably, the relay valve is rotated counterclockwise to close the relay valve, and the warning light 302c and the buzzer 302d stop giving a warning.

[0056] In use, first the warning light 302c flashes 5 times, and the buzzer 302d beeps 5 times, to verify the integrity of the device by the self-checking module 302b. After the alarm is started, every 1 minute the warning light 302c slowly flashes 3 times, accompanied by the buzzer 302d beeping 3 times until the worker closes the relay valve.

[0057] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An alarm device applied to a density relay valve, characterized by: The utility model relates to a kind of warning device applied to density relay valve, comprising, Rotary knob (100), the rotary knob (100) is nested with relay valve; Linkage assembly (200), including fixed connection with the rotary knob (100) connecting rod (201) and switch piece (202) controlled by the connecting rod (201); Control assembly (300), including power supply (301) controlled by the switch piece (202) and warning piece (302); The rotation of the rotary knob (100) is driven by twisting the relay valve; The switch piece (202) includes rotating rod (202a) movably connected with the end of the connecting rod (201), and the rotating rod (202a) rotates in the shell (A); The switch piece (202) further includes spring (202b) connected with one end of the rotating rod (202a), and power-on button (202c) corresponding to the rotating position of the other end of the rotating rod (202a); The resilience of the spring (202b) is less than the force required to rotate the rotary knob (100); The shell (A) is provided with a sliding groove (H), and the connecting rod (201) slides along the sliding groove (H).

2. The alarm device applied to a density relay valve according to claim 1, wherein: The rotary knob (100) is provided with a clamping edge (101), which can drive the rotation of the relay valve.

3. The alarm device for density relay valve according to claim 1, wherein: The power-on button (202c) is electrically connected with the power supply (301); The power-on button (202c) is pressed, and the power supply (301) is in the power-on state, and the power-on button (202c) is not pressed, and the power supply (301) is in the power-off state.

4. The alarm device for density relay valve according to claim 1, wherein: The warning piece (302) includes signal unit (302a) and self-checking module (302b) electrically connected with the power supply (301); The signal unit (302a) sends a check instruction to the self-checking module (302b).

5. The alarm device for density relay valve according to claim 4, wherein: The warning piece (302) further includes warning light (302c) and buzzer (302d) electrically connected with the power supply (301); After the check instruction is finished, the signal unit (302a) sends a working instruction to the warning light (302c) and the buzzer (302d).

6. A method of using the warning device applied to the density relay valve according to any one of claims 1-5, the method comprising: Sleeving the rotary knob (100) on the relay valve; Turning on the relay valve; The warning light (302c) and the buzzer (302d) start to emit sound and light alarm.

7. The method of use of claim 6, wherein: Rotating the relay valve clockwise, turning on the relay valve, and the warning light (302c) and the buzzer (302d) continuously emit warning.

8. The method of use of claim 7, wherein: Rotating the relay valve counterclockwise, turning off the relay valve, and the warning light (302c) and the buzzer (302d) stop emitting warning.

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