An additional device for monitoring the tightness of a filler cap

Abstract

The utility model discloses a kind of additional devices for monitoring packing gland tightness, including bonnet and valve stem, the bonnet is sleeved on valve stem, and sealing packing is equipped between bonnet and valve stem, the top of bonnet is equipped with packing gland by nut, the top one side of bonnet is equipped with detection device mounting bracket, the top one side of detection device mounting bracket is fixed with vertical screw rod, and packing gland tightness detection device is installed on screw rod;The utility model detects whether packing gland loosens by the detection system formed by detection device mounting bracket, packing gland tightness detection device and touch frame, after detection device mounting bracket, packing gland tightness detection device and touch frame are installed in place, the detection end of packing gland tightness detection device will be upwardly pressed against one end of touch frame, so that the other end of touch frame is pressed down packing gland, when packing gland loosens, the pressure acting on packing gland tightness detection device will immediately change.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically an auxiliary device for monitoring the tightness of packing glands. Background Technology

[0002] The core function of a packing gland (pressure plate) is to apply axial pressure through pre-tightened bolts and nuts to cause radial deformation of the packing, thereby compressing the packing and sealing the low-pressure chamber to prevent leakage of water, gas, or media. It is widely used in shaft sealing systems of rotating or reciprocating equipment such as pumps and valves. This structure is simple, low-cost, and easy to maintain. However, long-term use may lead to packing wear, or the nuts may loosen due to vibration of the pipeline on site. The tightening force of the nuts needs to be adjusted regularly, but it is not easy to quickly detect when the nuts have loosened. Utility Model Content

[0003] The purpose of this invention is to provide an additional device for monitoring the tightness of packing glands, in order to solve the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for monitoring the tightness of a packing gland, comprising a valve cover and a valve stem, wherein the valve cover is sleeved on the valve stem, and a sealing packing is provided between the valve cover and the valve stem; a packing gland is installed on the top of the valve cover by a nut; a detection device mounting bracket is installed on one side of the top of the valve cover; a vertical screw is fixed on one side of the top of the detection device mounting bracket; a gland tightness detection device is installed on the screw; a trigger frame mounting seat is installed on the other side of the top of the detection device mounting bracket; a trigger frame is rotatably mounted on the top of the trigger frame mounting seat; one end of the trigger frame abuts against the top surface of the packing gland, and the other end of the trigger frame abuts against the detection end of the gland tightness detection device.

[0005] Preferably, the pressure cap tightness detection device consists of a detection main body and a screw connecting sleeve. The screw connecting sleeve is fixed to the bottom of the detection main body. The detection main body is equipped with a circuit board, a lithium battery, a pressure sensor, a wireless communication module, and a buzzer.

[0006] Preferably, the top surface of the detection body is provided with a charging interface for electrical connection to the lithium battery and a power indicator light for displaying the lithium battery power level, and the outer surface of the detection body is provided with a broadcast port.

[0007] Preferably, an indicator light is provided on the lower outer side of the detection body.

[0008] Preferably, the trigger frame has a Y-shaped structure, with a protruding contact point at each of the two ends on one side of the trigger frame, and a circular contact plate on the other side of the trigger frame. The diameter of the contact plate is larger than the size of the detection end of the pressure cap tightness detection device.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: After the packing gland is installed in place, the detection device mounting bracket, the gland tightness detection device and the trigger frame are installed on the valve cover. During installation, the height of the gland tightness detection device needs to be adjusted so that the detection end of the gland tightness detection device presses upward against one end of the trigger frame, and the other end of the trigger frame presses downward against the packing gland. When the packing gland becomes loose, the pressure acting on the gland tightness detection device will change immediately. This method can be used to accurately determine whether the packing gland is loose. The main detection unit contains a circuit board, a lithium battery, a pressure sensor, a wireless communication module, and a buzzer. When a loose packing gland is detected and maintenance is required, the wireless communication module will send the information to the maintenance personnel, and the buzzer will sound an alarm, allowing the maintenance personnel to immediately identify the equipment that needs maintenance. The indicator lights on the main detection unit automatically light up after the buzzer alarm, which not only helps maintenance personnel to quickly locate the equipment, but also provides lighting for equipment maintenance. The trigger frame has a Y-shaped structure and two contact points at the part that contacts the packing gland. Multiple contact points can help improve the sensitivity of the detection. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the assembly of the entire utility model and the valve cover; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the structure of the mounting frame for the detection device of this utility model; Figure 4 This is a schematic diagram of the cap tightness detection device of this utility model; Figure 5 This is a schematic diagram showing the connection of the internal components of the pressure cap tightness detection device of this utility model.

[0011] In the diagram: 1. Valve cover; 2. Valve stem; 3. Sealing packing; 4. Packing gland; 5. Detection device mounting bracket; 6. Gland tightness detection device; 7. Actuating frame; 8. Screw; 9. Actuating frame mounting base; 10. Contact point; 11. Contact plate; 12. Pressure sensor; 13. Power indicator light; 14. Screw connecting sleeve; 15. Detection main body; 16. Indicator light; 17. Announcement port; 18. Charging interface. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0013] Please see Figure 1-5 In this embodiment of the present invention, an auxiliary device for monitoring the tightness of a packing gland includes a valve cover 1 and a valve stem 2. The valve cover 1 is sleeved on the valve stem 2, and a sealing packing 3 is provided between the valve cover 1 and the valve stem 2. A packing gland 4 is installed on the top of the valve cover 1 by a nut. A detection device mounting bracket 5 is installed on one side of the top of the valve cover 1. A vertical screw 8 is fixed on one side of the top of the detection device mounting bracket 5. A gland tightness detection device 6 is installed on the screw 8. A trigger frame mounting seat 9 is installed on the other side of the top of the detection device mounting bracket 5. A trigger frame 7 is rotatably installed on the top of the trigger frame mounting seat 9. One end of the trigger frame 7 abuts against the top surface of the packing gland 4, and the other end of the trigger frame 7 abuts against the detection end of the gland tightness detection device 6.

[0014] The cap tightness detection device 6 consists of a detection main body 15 and a screw connecting sleeve 14. The screw connecting sleeve 14 is fixed to the bottom of the detection main body 15. The detection main body 15 contains a circuit board, a lithium battery, a pressure sensor 12, a wireless communication module, and a buzzer. When the detection device detects that the filler cap 4 is loose and requires maintenance, the wireless communication module will send this information to the maintenance personnel, and the buzzer will sound an alarm, allowing the maintenance personnel to immediately identify the equipment requiring maintenance. An indicator light 16 is provided on the lower outer side of the detection main body 15.

[0015] The top surface of the detection body 15 is provided with a charging interface 18 that is electrically connected to the lithium battery and a power indicator light 13 for displaying the lithium battery power. The outer surface of the detection body 15 is provided with a broadcast port 17.

[0016] The trigger frame 7 has a Y-shaped structure. Each of the two ends of one side of the trigger frame 7 has a protruding contact point 10. The other side of the trigger frame 7 has a circular contact plate 11. The diameter of the contact plate 11 is larger than the size of the detection end of the pressure cap tightness detection device 6.

[0017] The working principle of this utility model is as follows: After the packing gland 4 is installed in place, the detection device mounting bracket 5, the gland tightness detection device 6, and the trigger bracket 7 are installed on the valve cover 1 (e.g., Figure 1 As shown), during installation, the height of the gland tightness detection device 6 needs to be adjusted so that the detection end of the gland tightness detection device 6 presses upward against one end of the trigger frame 7, and the other end of the trigger frame 7 presses downward against the packing gland 4. When the packing gland 4 becomes loose, the pressure acting on the gland tightness detection device 6 will change immediately. This method can be used to accurately determine whether the packing gland 4 is loose. The internal components of the detection main body 15 include a circuit board, a lithium battery, a pressure sensor 12, a wireless communication module, and a buzzer. When the filling gland 4 is found to be loose and requires maintenance, the wireless communication module will send the information to the maintenance personnel, and the buzzer will sound an alarm, so that the maintenance personnel can immediately find the equipment that needs maintenance. The indicator light 16 on the main detection unit 15 automatically lights up after the buzzer alarm, which not only helps maintenance personnel to quickly locate the equipment, but also provides lighting for equipment maintenance. The trigger frame 7 has a Y-shaped structure and is provided with two contact points 10 at the part that contacts the packing gland 4. Multiple contact points 10 can help improve the sensitivity of detection.

[0018] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An auxiliary device for monitoring the tightness of a packing gland, comprising a valve cover (1) and a valve stem (2), wherein the valve cover (1) is sleeved on the valve stem (2), a sealing packing (3) is provided between the valve cover (1) and the valve stem (2), and a packing gland (4) is installed on the top of the valve cover (1) by a nut, characterized in that: A detection device mounting bracket (5) is installed on one side of the top of the valve cover (1). A vertical screw (8) is fixed on one side of the top of the detection device mounting bracket (5). A gland tightness detection device (6) is installed on the screw (8). A trigger frame mounting seat (9) is installed on the other side of the top of the detection device mounting bracket (5). A trigger frame (7) is rotatably installed on the top of the trigger frame mounting seat (9). One end of the trigger frame (7) abuts against the top surface of the packing gland (4), and the other end of the trigger frame (7) abuts against the detection end of the gland tightness detection device (6).

2. The auxiliary device for monitoring the tightness of packing glands according to claim 1, characterized in that: The pressure cap tightness detection device (6) consists of a detection main body (15) and a screw connecting sleeve (14). The screw connecting sleeve (14) is fixed to the bottom of the detection main body (15). The detection main body (15) is equipped with a circuit board, a lithium battery, a pressure sensor (12), a wireless communication module and a buzzer.

3. The auxiliary device for monitoring the tightness of the packing gland according to claim 2, characterized in that: The top surface of the detection body (15) is provided with a charging interface (18) that is electrically connected to the lithium battery and a power indicator light (13) for displaying the power of the lithium battery. The outer surface of the detection body (15) is provided with a broadcast port (17).

4. The auxiliary device for monitoring the tightness of the packing gland according to claim 2, characterized in that: The lower outer side of the detection body (15) is provided with an indicator light (16).

5. An auxiliary device for monitoring the tightness of a packing gland according to claim 1, characterized in that: The trigger frame (7) has a Y-shaped structure. Each of the two ends of one side of the trigger frame (7) is provided with a protruding contact point (10). The other side of the trigger frame (7) is provided with a circular contact plate (11). The diameter of the contact plate (11) is larger than the size of the detection end of the pressure cap tightness detection device (6).

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