Automatic alarm device for valve

Abstract

The utility model discloses an automatic alarm device for a valve, which comprises a valve body provided with an inlet, an outlet and a top opening; the valve cover is hermetically connected to the top opening of the valve body; the valve rod penetrates through the valve cover in a sealing manner and extends into the valve body; the valve clack is connected to the bottom of the valve rod and located in the valve body; the valve seat is arranged in the valve body and provided with an opening, the inlet and the outlet of the valve body are communicated through the opening, and the opening corresponds to the valve clack; the valve rod can move under the action of external force to drive the valve clack to open or close the opening in the valve seat; the sealing assembly is arranged on the valve clack, the alarm assembly is arranged on the valve clack and the valve rod, the sealing assembly is used for blocking a medium leaked between the valve clack and the valve seat, and when the medium between the valve clack and the valve seat leaks, the alarm assembly gives an alarm. According to the utility model, the problems of hysteresis of valve monitoring and incapability of timely finding leakage in the valve in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to an automatic valve alarm device. Background Art

[0002] As a common closing and opening device in pipelines, valves can be seen everywhere in modern industrial production, pipeline storage and transportation, and other fields. In the process of oil and gas extraction, storage and transportation, and petrochemical production, the closing and opening and sealing of many valves are very critical. During the use of valves, they are corroded by the medium or repeatedly closed and opened. The valves will leak due to wear after a long period of use. If the amount of internal leakage of the valve is small or dripping, the leakage cannot be found by directly observing the outside of the valve. If the leakage is not handled in time during the oil and gas transportation process or petroleum and petrochemical production, there will be great safety risks. In addition, due to the lag in manual monitoring of the working condition of the valve, it is difficult to find the problem in time. Utility Model Content

[0003] The utility model aims to solve the problems of hysteresis of valve monitoring and failure to timely discover leakage inside the valve in the prior art, and proposes an automatic valve alarm device.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a valve automatic alarm device, comprising a valve body, having an inlet, an outlet and a top opening, wherein the inlet and the outlet are both provided with connecting flanges; a valve cover, which is sealed and connected to the top opening of the valve body; a valve stem, which seals and passes through the valve cover and extends into the interior of the valve body; a valve disc, which is connected to the bottom of the valve stem and is located inside the valve body; a valve seat, which is arranged inside the valve body and has an opening, wherein the inlet and the outlet of the valve body are connected, and the opening corresponds to the valve disc; the valve stem can move under the action of an external force to drive the valve disc to open or close the opening on the valve seat; and further comprises a sealing component and an alarm component, wherein the sealing component is arranged on the valve disc, and the alarm component is arranged on the valve disc and the valve stem, wherein the sealing component is used to intercept the medium leaking between the valve disc and the valve seat, and when the medium between the valve disc and the valve seat leaks, the alarm component sounds an alarm.

[0005] As a further description of the above technical solution: the valve flap is composed of a driving connection part, a main body and a flow regulating part, the sealing assembly includes a primary sealing ring, a secondary sealing ring, a limiting ring, a blocking ring and a retaining ring, the limiting ring and the retaining ring are both fixedly sleeved on the main body, the primary sealing ring is slidably sleeved on the main body and is located between the limiting ring and the retaining ring, the blocking ring is slidably sleeved on the main body, the blocking ring is located between the primary sealing ring and the limiting ring, and the outer diameter of the blocking ring is the same as that of the primary sealing ring. The outer diameters of the sealing rings are equal, a first spring is arranged between the sealing ring and the limit ring, the first spring is sleeved on the main body, the primary sealing ring is composed of a horizontal ring and a vertical ring, a through hole is opened on the horizontal ring, when the valve disc closes the valve seat, an annular cavity is formed between the horizontal ring, the vertical ring, the main body and the valve seat, the secondary sealing ring is sleeved on the sealing ring, when the sealing ring rises, the secondary sealing ring descends and forms a sealing ring cavity with the sealing ring and the primary sealing ring.

[0006] As a further description of the above technical solution: a linkage assembly is arranged between the secondary sealing ring and the blocking ring, and the linkage assembly includes a first rack, a second rack, and a gear. An installation notch is opened on the limit ring, and the first rack is arranged in the installation notch. The first rack is fixed above the blocking ring and is perpendicular to the blocking ring. The gear is arranged in the installation notch. An installation groove is opened on the inner wall of the secondary sealing ring, and the second rack is arranged in the installation groove. The first rack and the second rack are parallel to each other, the first rack is meshed with the gear, and the second rack is meshed with the gear.

[0007] As a further description of the above technical solution: at least three linkage components are arranged at equal intervals along the circumference of the limiting ring.

[0008] As a further description of the above technical solution: the alarm component includes a buzzer, a battery pack, a positive conductor, a negative conductor, a driving magnetic ring, a follower magnetic block, a connecting arm, and a driving rod. The valve stem is composed of a rod body and a rod head. The buzzer is arranged at the end of the rod head. The interior of the rod body is hollow. The battery pack is arranged inside the rod body. The negative conductor is arranged at the upper end of the rod body, and the positive conductor is arranged at the lower end of the rod body. The follower magnetic block is arranged at an end of the positive conductor away from the battery pack. The positive conductor is directly connected to the negative pole of the battery pack. A second spring is arranged between the positive conductor and the positive pole of the battery pack. The buzzer is connected to the positive conductor and the negative conductor respectively through electric wires. The driving magnetic ring is sleeved on the rod body, and the driving magnetic ring corresponds to the blocking ring. The driving rod is arranged on the blocking ring. One end of the connecting arm is connected to the driving rod and the other end is connected to the driving magnetic ring.

[0009] As a further description of the above technical solution: the valve stem is made of aluminum alloy.

[0010] As a further description of the above technical solution: a rubber sealing ring is arranged at the bottom of the vertical ring, and a hard rubber ring is arranged between the sealing ring and the horizontal ring.

[0011] As a further description of the above technical solution: the valve cover is composed of a fixed connection part, a sealing rubber ring, and a protective part. The fixed connection part is connected to the valve body by a thread, and the valve stem is connected to the fixed connection part by a thread. A driving turntable is provided at the end of the valve stem, the sealing rubber ring is provided between the fixed connection part and the valve stem, and the protective part is provided between the fixed connection part and the sealing rubber ring.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] In the utility model, 1. The sealing component has a multi-level leak prevention function. When leakage occurs between the valve disc and the valve seat, the secondary sealing ring performs secondary leak prevention and can promptly issue an alarm while preventing leakage so that the staff can deal with it in time; at the same time, the dripping situation between the valve disc and the valve seat can also be discovered in time.

[0014] 2. The rubber sealing ring and hard rubber ring can improve the sealing effect. At the same time, the sliding mode of the secondary sealing ring relative to the blocking ring can avoid the generation of negative pressure in the annular cavity and the sealing ring cavity, thereby reducing the interference of air on the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 for Figure 2 The enlarged view of point A in the middle shows the valve disc and valve seat in a closed state;

[0018] Figure 4 for Figure 2 The enlarged view of point A in the middle shows that the valve disc and valve seat are not closed;

[0019] Figure 5 for Figure 2 Enlarged view of point B in the middle;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention from another angle, omitting the valve body.

[0021] Legend: 1. Valve body; 2. Top opening; 3. Valve cover; 31. Fixed connection; 32. Sealing rubber ring; 33. Protective part; 4. Valve stem; 41. Stem; 42. Stem head; 5. Driving turntable; 6. Valve disc; 61. Driving connection; 62. Main body; 63. Flow adjustment part; 7. Valve seat; 8. Primary sealing ring; 9. Horizontal ring; 10. Through hole; 11. Vertical ring; 12. Secondary sealing ring; 13. Limiting ring; 14. Sealing ring; 15. retaining ring; 16. annular cavity; 17. sealing ring cavity; 18. rubber sealing ring; 19. hard rubber ring; 20. first rack; 21. second rack; 22. gear; 23. mounting notch; 24. buzzer; 25. battery pack; 26. positive conductor; 27. negative conductor; 28. driving magnetic ring; 29. ​​follower magnetic block; 30. connecting arm; 40. driving rod; 50. first spring; 60. second spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-6 , the utility model provides a technical solution for a valve automatic alarm device:

[0024] A valve automatic alarm device comprises a valve body 1 having an inlet, an outlet and a top opening 2, wherein the inlet and the outlet are both provided with connecting flanges; the valve body 1 is connected to a pipeline via the connecting flanges.

[0025] The valve cover 3 is sealingly connected to the top opening 2 of the valve body 1 .

[0026] The valve stem 4 is sealed and passes through the valve cover 3 and extends into the interior of the valve body 1. The valve stem 4 is made of aluminum alloy. The valve stem 4 consists of a rod body 41 and a rod head 42. The valve cover 3 consists of a fixed connection part 31, a sealing rubber ring 32, and a protective part 33. The fixed connection part 31 is connected to the valve body 1 by a thread, and the valve stem 4 is connected to the fixed connection part 31 by a thread. A driving turntable 5 is provided at the end of the valve stem 4. The sealing rubber ring 32 is provided between the fixed connection part 31 and the valve stem 4, and the protective part 33 is provided between the fixed connection part 31 and the sealing rubber ring 32. By rotating the driving turntable 5, the valve stem 4 spirally rotates along the fixed connection part 31 of the valve cover 3 and moves up and down.

[0027] The valve flap 6 is connected to the bottom of the valve stem 4 and is located inside the valve body 1. The valve flap 6 is composed of a drive connection part 61, a main body part 62 and a flow regulating part 63. The drive connection part 61 is rotatably connected to the lower end of the rod body 41.

[0028] The valve seat 7 is arranged inside the valve body 1 and has an opening, and the opening enables the inlet and outlet of the valve body 1 to communicate, and the opening corresponds to the valve flap 6. The valve stem 4 drives the valve flap 6 to open or close the opening on the valve seat 7. It also includes a sealing component and an alarm component. The sealing component is used to intercept the medium leaking between the valve flap 6 and the valve seat 7. When the medium between the valve flap 6 and the valve seat 7 leaks, the alarm component sounds an alarm.

[0029] The sealing assembly includes a primary sealing ring 8, a secondary sealing ring 12, a limiting ring 13, a blocking ring 14, and a retaining ring 15. The limiting ring 13 and the retaining ring 15 are fixedly sleeved on the main body 62. The primary sealing ring 8 is slidably sleeved on the main body 62 and is located between the limiting ring 13 and the retaining ring 15. The blocking ring 14 is slidably sleeved on the main body 62. The blocking ring 14 is located between the primary sealing ring 8 and the limiting ring 13. The outer diameter of the blocking ring 14 is equal to the outer diameter of the primary sealing ring 8. A first spring 50 is arranged between the blocking ring 14 and the limiting ring 13. The first spring 50 is sleeved On the main body 62, the primary sealing ring 8 is composed of a horizontal ring 9 and a vertical ring 11. A through hole 10 is opened on the horizontal ring 9. When the valve disc 6 closes the valve seat 7, an annular cavity 16 is formed among the horizontal ring 9, the vertical ring 11, the main body 62 and the valve seat 7. The secondary sealing ring 12 is sleeved on the blocking ring 14. When the blocking ring 14 rises, the secondary sealing ring 12 descends and forms a sealing ring cavity 17 with the blocking ring 14 and the primary sealing ring 8. A rubber sealing ring 18 is arranged at the bottom of the vertical ring 11, and a hard rubber ring 19 is arranged between the blocking ring 14 and the horizontal ring 9.

[0030] A linkage assembly is provided between the secondary sealing ring 12 and the blocking ring 14. At least three linkage assemblies are provided at equal intervals along the circumference of the limiting ring 13. In the present embodiment, three linkage assemblies are provided. The linkage assembly comprises a first rack 20, a second rack 21, and a gear 22. A mounting notch 23 is provided on the limiting ring 13. The first rack 20 is provided in the mounting notch 23. The first rack 20 is fixed above the blocking ring 14 and is perpendicular to the blocking ring 14. The gear 22 is provided in the mounting notch 23. A mounting groove is provided on the inner wall of the secondary sealing ring 12. The second rack 21 is provided in the mounting groove. The first rack 20 and the second rack 21 are parallel to each other. The first rack 20 meshes with the gear 22, and the second rack 21 meshes with the gear 22.

[0031] The alarm assembly includes a buzzer 24, a battery pack 25, a positive conductor 26, a negative conductor 27, a driving magnetic ring 28, a follower magnetic block 29, a connecting arm 30, and a driving rod 40. The buzzer 24 is arranged at the end of a rod head 42, the rod body 41 is hollow inside, the battery pack 25 is arranged inside the rod body 41, the negative conductor 27 is arranged at the upper end of the rod body 41, the positive conductor 26 is arranged at the lower end of the rod body 41, and the follower magnetic block 29 is arranged at the positive conductor 26 away from the battery pack 25. At one end, the positive conductor 26 is directly connected to the negative pole of the battery pack 25, a second spring is arranged between the positive conductor 26 and the positive pole of the battery pack 25, the buzzer 24 is respectively connected to the positive conductor 26 and the negative conductor 27 through wires, the driving magnetic ring 28 is sleeved on the rod body 41, the driving magnetic ring 28 corresponds to the blocking ring 14, the driving rod 40 is arranged on the blocking ring 14, one end of the connecting arm 30 is connected to the driving rod 40 and the other end is connected to the driving magnetic ring 28.

[0032] Working principle: When the valve is in the on state, the valve disc 6 is not in contact with the valve seat 7, and the opening of the valve seat 7 is not closed. Figure 4 As shown, under the action of gravity, the primary sealing ring 8 is in a natural state and is supported by the blocking ring 15 , while under the action of the first spring 50 , there is a gap between the sealing ring 14 and the primary sealing ring 8 .

[0033] When the valve disc 6 is driven to seal the opening of the valve seat 7 by driving the valve stem 4, the movement of the valve disc 6 drives the primary sealing ring 8 to move, and then the vertical ring 11 of the primary sealing ring 8 contacts the valve seat 7. At this time, the excess medium in the annular cavity 16 will be discharged from the through hole 10, and the remaining medium will completely fill the annular cavity 16 until the valve disc 6 completely blocks the opening of the valve seat 7. In this process, the primary sealing ring 8 contacts the blocking ring 14 and pushes the blocking ring 14 to compress the first spring 50. At this time, the annular cavity 16 is filled with medium, and the through hole 10 of the primary sealing ring 8 is also not conductive, thereby realizing the primary blocking of the valve disc 6 to the opening of the valve seat 7, and the secondary sealing effect formed by the secondary sealing ring 12 and the blocking ring 14, as shown in FIG. Figure 3 At this time, under the action of the second spring, the negative conductor 27 electrically connected to the buzzer 24 is connected to the battery, while the positive conductor 26 electrically connected to the buzzer 24 is not connected to the battery pack 25 .

[0034] In the secondary sealing state, if there is a dripping between the opening of the valve disc 6 and the valve seat 7, the medium will enter the annular cavity 16 under the action of the medium's own pressure, so that the pressure in the annular cavity 16 increases, so the medium will act on the blocking plate to move through the through hole 10. In this process, the blocking plate moves away from the primary sealing plate. Under the action of the linkage assembly, the secondary sealing ring 12 moves toward the primary sealing ring 8, and the medium enters the sealing ring cavity 17 formed between the secondary sealing ring 12, the blocking ring 14, the primary sealing ring 8 and the main body 62. In this process, the driving rod 40 drives the connecting arm 30 to move, the driving magnetic ring 28 drives the moving magnetic block 29 to move, the second spring is compressed, the positive conductor 26 is connected to the positive pole of the battery pack 25, and the buzzer 24 alarms.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve automatic alarm device, comprising a valve body (1) having an inlet, an outlet and a top opening (2), wherein the inlet and the outlet are both provided with connecting flanges; A valve cover (3) is sealingly connected to the top opening (2) of the valve body (1); A valve stem (4) sealably passes through the valve cover (3) and extends into the interior of the valve body (1); A valve flap (6) connected to the bottom of the valve stem (4) and located inside the valve body (1); a valve seat (7), arranged inside the valve body (1) and having an opening, wherein the opening enables the inlet and the outlet of the valve body (1) to communicate with each other, and the opening corresponds to the valve flap (6); The valve stem (4) can move under the action of an external force to drive the valve flap (6) to open or close the opening on the valve seat (7); It is characterized in that The valve seat (7) further comprises a sealing component and an alarm component, wherein the sealing component is arranged on the valve flap (6), and the alarm component is arranged on the valve flap (6) and the valve stem (4). The sealing component is used to intercept the medium leaking from between the valve flap (6) and the valve seat (7). When the medium leaks from between the valve flap (6) and the valve seat (7), the alarm component sounds an alarm.

2. The automatic valve alarm device according to claim 1, characterized in that: The valve flap (6) is composed of a driving connection part (61), a main body (62) and a flow regulating part (63); the sealing assembly comprises a primary sealing ring (8), a secondary sealing ring (12), a limiting ring (13), a blocking ring (14) and a retaining ring (15); the limiting ring (13) and the retaining ring (15) are both fixedly sleeved on the main body (62); the primary sealing ring (8) is slidably sleeved on the main body (62) and is located between the limiting ring (13) and the retaining ring (15); the blocking ring (14) is slidably sleeved on the main body (62); the blocking ring (14) is located between the primary sealing ring (8) and the limiting ring (13); the outer diameter of the blocking ring (14) is equal to the outer diameter of the primary sealing ring (8); A first spring (50) is arranged between the sealing ring (14) and the limiting ring (13), and the first spring (50) is sleeved on the main body (62). The primary sealing ring (8) is composed of a horizontal ring (9) and a vertical ring (11), and a through hole (10) is opened on the horizontal ring (9). When the valve flap (6) closes the valve seat (7), an annular cavity (16) is formed between the horizontal ring (9), the vertical ring (11), the main body (62) and the valve seat (7). The secondary sealing ring (12) is sleeved on the sealing ring (14). When the sealing ring (14) rises, the secondary sealing ring (12) descends and forms a sealing ring cavity (17) between the sealing ring (14) and the primary sealing ring (8).

3. The automatic valve alarm device according to claim 2, characterized in that: A linkage assembly is arranged between the secondary sealing ring (12) and the blocking ring (14), and the linkage assembly comprises a first rack (20), a second rack (21), and a gear (22). The limiting ring (13) is provided with a mounting notch (23), the first rack (20) is arranged in the mounting notch (23), the first rack (20) is fixed above the blocking ring (14) and is perpendicular to the blocking ring (14), the gear (22) is arranged in the mounting notch (23), the inner wall of the secondary sealing ring (12) is provided with a mounting groove, the second rack (21) is arranged in the mounting groove, the first rack (20) and the second rack (21) are parallel to each other, the first rack (20) is meshed with the gear (22), and the second rack (21) is meshed with the gear (22).

4. The automatic valve alarm device according to claim 3 is characterized in that: At least three linkage components are arranged at equal intervals along the circumference of the limiting ring (13).

5. The automatic valve alarm device according to claim 2, characterized in that: The alarm assembly comprises a buzzer (24), a battery pack (25), a positive conductor (26), a negative conductor (27), a driving magnetic ring (28), a follower magnetic block (29), a connecting arm (30), and a driving rod (40); the valve stem (4) comprises a rod body (41) and a rod head (42); the buzzer (24) is arranged at the end of the rod head (42); the rod body (41) is hollow inside; the battery pack (25) is arranged inside the rod body (41); the negative conductor (27) is arranged at the upper end of the rod body (41); the positive conductor (26) is arranged at the lower end of the rod body (41); the follower magnetic block (29) is arranged at the positive conductor ( 26) is away from one end of the battery pack (25), the positive conductor (26) is directly connected to the negative pole of the battery pack (25), a second spring is arranged between the positive conductor (26) and the positive pole of the battery pack (25), the buzzer (24) is respectively connected to the positive conductor (26) and the negative conductor (27) through electric wires, the driving magnetic ring (28) is sleeved on the rod body (41), the driving magnetic ring (28) corresponds to the blocking ring (14), the driving rod (40) is arranged on the blocking ring (14), one end of the connecting arm (30) is connected to the driving rod (40) and the other end is connected to the driving magnetic ring (28).

6. The automatic valve alarm device according to claim 5, characterized in that: The valve stem (4) is made of aluminum alloy.

7. The automatic valve alarm device according to claim 2, characterized in that: A rubber sealing ring (18) is arranged at the bottom of the vertical ring (11), and a hard rubber ring (19) is arranged between the sealing ring (14) and the horizontal ring (9).

8. The automatic valve alarm device according to claim 1, characterized in that: The valve cover (3) is composed of a fixed connection part (31), a sealing rubber ring (32), and a protective part (33); the fixed connection part (31) is connected to the valve body (1) by means of threads; the valve stem (4) is connected to the fixed connection part (31) by means of threads; a driving turntable (5) is provided at the end of the valve stem (4); the sealing rubber ring (32) is provided between the fixed connection part (31) and the valve stem (4); and the protective part (33) is provided between the fixed connection part (31) and the sealing rubber ring (32).

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