A leakage detection device for a dynamic seal

Abstract

The utility model relates to dynamic sealing detection technical field, and disclose a kind of leakage detection equipment of dynamic sealing structure, including cylinder, installation assembly is equipped on the cylinder, the bottom inner wall of the cylinder is equipped with round hole, fixedly connected with fixed rod in the round hole, the fixed rod is equipped with through-hole, limit slot is equipped on the circumference inner wall of the through-hole, piston is slidably connected in the limit slot, the lower surface of the piston is fixedly connected with slide bar.The utility model not only can react to form a large amount of CO2 gas in the leakage liquid with CaO, the air pressure in cylinder increases and promotes piston to move and then make slide bar produce displacement, and then staff can only visually see that sealing element leaks when checking, and the signal transmission of leakage can be transmitted to computer end by the contact of the first inductive sensor and the second inductive sensor, notify staff to make treatment in time.

Description

Technical Field

[0001] This utility model relates to the field of dynamic seal detection technology, and more specifically to a leakage detection device for a dynamic seal structure. Background Technology

[0002] Dynamic seals are seals between relatively moving parts in a machine. Dynamic seals are divided into two categories: reciprocating dynamic seals and rotary dynamic seals. After long-term use, the sealing effect will gradually weaken due to the aging of the seals.

[0003] A search revealed a Chinese patent with publication number CN210318492U, which discloses a dynamic sealing structure. This device uses a sealing sleeve and a sealing gasket to rotate an insulating rod, which in turn drives an operating shaft to rotate, preventing internal material leakage when the operating shaft rotates. However, this device relies on manual observation to check for leaks at the seal, which is difficult to detect directly when the leakage is minor. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a leakage detection device for a dynamic sealing structure to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a leakage detection device for a dynamic sealing structure, comprising a cylinder, an installation assembly on the cylinder, a circular hole on the inner wall of the bottom of the cylinder, a fixed rod fixedly connected in the circular hole, a through hole on the fixed rod, a limiting groove on the inner circumference of the through hole, a piston slidably connected in the limiting groove, a sliding rod fixedly connected to the lower surface of the piston, and the bottom of the sliding rod passing through the through hole at the bottom of the fixed rod, a connecting block fixedly connected to the bottom end of the sliding rod, and a storage box inside the cylinder containing solid CaO.

[0006] As a further embodiment of this utility model, the lower surface of the connecting block is provided with a first sensing sensor, the lower surface of the cylinder is fixedly connected with a plurality of connecting rods, the bottom of the plurality of connecting rods is fixedly connected with a connecting plate, the upper surface of the connecting plate is fixedly connected with a frustum, the upper surface of the frustum is provided with a second sensing sensor, and the second sensing sensor is electrically connected to the computer.

[0007] As a further embodiment of this utility model, a buzzer is provided on the lower surface of the connecting plate, and the buzzer is electrically connected to the second sensing sensor.

[0008] As a further embodiment of this utility model, the mounting component is a fixing plate, and the fixing plate has multiple mounting holes arranged in a circular array.

[0009] As a further embodiment of this utility model, an annular groove is provided on the upper surface of the fixing plate, and a sealing ring is adhered inside the annular groove.

[0010] As a further embodiment of this utility model, a spring is fixedly connected to the bottom inner wall of the limiting groove, the other end of the spring is fixed to the lower surface of the piston, and the spring is sleeved on the outside of the slide rod.

[0011] As a further embodiment of this utility model, the storage box is provided with a fixing ring, and the bottom of the fixing ring passes through the lower surface of the storage box, and the fixing ring is hollow.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model utilizes the CaO solid component. If a leak occurs and liquid flows into the storage box, the water in the liquid reacts with the CaO to generate a large amount of CO2 gas. The increased gas pressure inside the cylinder pushes the piston to move, which in turn causes the slide rod to shift. Thus, during inspection, the staff can directly observe the leak in the seal.

[0014] 2. This utility model, through the provision of a first sensing sensor and a second sensing sensor, can quickly compress the piston when a rapid leak occurs, causing the first sensing sensor to quickly contact the second sensing sensor and transmit the leak signal to the computer, notifying staff to take timely action.

[0015] 3. This utility model, through the included buzzer, can emit an alarm sound after the first sensor and the second sensor come into contact, notifying nearby staff of the leakage situation and preventing the situation from going unnoticed by staff on the computer. The dual warning increases the warning effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 For the present utility model Figure 1 A schematic diagram of the structure viewed from below.

[0018] Figure 3 For the present utility model Figure 1 A schematic diagram of a localized explosion structure.

[0019] Figure 4 This is a partial cross-sectional view of the present invention.

[0020] Figure 5 This is an enlarged structural schematic diagram of the connecting plate of this utility model.

[0021] The attached figures are labeled as follows: 1. Cylinder; 2. Fixed plate; 3. Storage box; 4. Connecting rod; 5. Connecting plate; 6. Buzzer; 7. Circular hole; 8. Fixed rod; 9. Through hole; 10. Limiting groove; 11. Piston; 12. Sliding rod; 13. Spring; 14. Connecting block; 15. First sensing sensor; 16. Frustum; 17. Second sensing sensor; 18. Fixed ring; 19. Annular groove; 20. Sealing ring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1-5 This utility model provides a leakage detection device for a dynamic sealing structure, including a cylinder 1, an installation assembly on the cylinder 1, a circular hole 7 on the inner wall of the bottom of the cylinder 1, a fixing rod 8 welded into the circular hole 7, a through hole 9 on the fixing rod 8, a limiting groove 10 on the inner circumference of the through hole 9, a piston 11 slidably connected in the limiting groove 10, a sliding rod 12 fixedly connected to the lower surface of the piston 11 by bolts, and the bottom of the sliding rod 12 passes through the through hole 9 at the bottom of the fixing rod 8, and a connecting block 14 fixedly connected to the bottom end of the sliding rod 12 by bolts. A storage box 3 is provided inside the cylinder 1, and CaO solid is placed in the storage box 3. If liquid in the device flows into the storage box 3 due to the CaO solid, the water in the liquid reacts with CaO to generate a large amount of CO2 gas. The gas pressure inside the cylinder 1 increases, pushing the piston 11 to move and causing the sliding rod 12 to move. Thus, the operator can directly see the leakage of the seal during inspection.

[0024] In this invention, a first sensing sensor 15 is provided on the lower surface of the connecting block 14. Multiple connecting rods 4 are bolted to the lower surface of the cylinder 1. A connecting plate 5 is bolted to the bottom of each connecting rod 4. A frustum 16 is bolted to the upper surface of the connecting plate 5. A second sensing sensor 17 is provided on the upper surface of the frustum 16 and is electrically connected to the computer. Through the first and second sensing sensors 15 and 17, in the event of a rapid leak, a large amount of gas generated inside the cylinder 1 quickly compresses the piston 11, causing the first sensing sensor 15 to quickly contact the second sensing sensor 17, transmitting the leak signal to the computer and notifying personnel to take timely action. A buzzer 6 is provided on the lower surface of the connecting plate 5 and is electrically connected to the second sensing sensor 17. The buzzer 6 emits an alarm sound after the first and second sensing sensors 15 contact, notifying nearby personnel of the leak and preventing the computer-connected personnel from missing the leak. This double warning enhances the safety of the system. For warning purposes, the mounting component is a fixed plate 2 with multiple mounting holes arranged in a circular array. This allows for easy installation of the cylinder 1 onto the dynamic seal to be tested. The upper surface of the fixed plate 2 has an annular groove 19, within which a sealing ring 20 is bonded. The sealing ring 20 and the piston 11 ensure a sealed space within the cylinder 1, facilitating the downward movement of the piston 11 along the limiting groove 10 in the event of a leak. The bottom inner wall of the limiting groove 10... A spring 13 is welded on, and the other end of the spring 13 is fixed to the lower surface of the piston 11. The spring 13 is sleeved on the outside of the slide rod 12. The spring 13 can apply an upward elastic force to the piston 11, so that the initial position of the piston 11 is at the top of the limiting groove 10. The storage box 3 is provided with a fixing ring 18, and the bottom of the fixing ring 18 passes through the lower surface of the storage box 3. The fixing ring 18 is hollow. The fixing ring 18 can prevent the gas from being unable to push the piston 11 to move after the CaO solid blocks the hole at the bottom of the storage box 3.

[0025] The use of this utility model involves the following steps:

[0026] S1: First, install the cylinder 1 to the dynamic seal that needs to be tested using the installation assembly. If a leak occurs, the liquid in the device flows into the storage box 3 inside the cylinder 1 through the dynamic seal. The water in the liquid reacts with the CaO in the storage box 3 to produce a large amount of CO2 gas. The large amount of CO2 gas produced will increase the gas pressure inside the cylinder 1. The increased gas pressure inside the cylinder 1 will push the piston 11 to move downward along the limiting groove 10 to squeeze the spring 13, thereby causing the slide rod 12 to move. During the inspection, the staff can only visually see that the seal is leaking.

[0027] S2: When a large leak occurs, a large amount of liquid flows into cylinder 1, resulting in a large amount of CO2 gas being generated. This causes the gas pressure inside cylinder 1 to rise rapidly. After piston 11 continues to move downwards and the first sensor 15 comes into contact with the second sensor 17, a leak signal is sent to the computer to notify the staff. At the same time, buzzer 6 sounds an alarm to alert nearby staff that a leak has occurred.

[0028] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A leakage detection device for a dynamic sealing structure, comprising a cylinder (1), characterized in that: The cylinder (1) is provided with an installation assembly. A circular hole (7) is opened on the inner wall of the bottom of the cylinder (1). A fixing rod (8) is fixedly connected in the circular hole (7). A through hole (9) is opened on the fixing rod (8). A limiting groove (10) is opened on the inner wall of the through hole (9). A piston (11) is slidably connected in the limiting groove (10). A sliding rod (12) is fixedly connected to the lower surface of the piston (11). The bottom of the sliding rod (12) passes through the through hole (9) at the bottom of the fixing rod (8). A connecting block (14) is fixedly connected to the bottom end of the sliding rod (12). A storage box (3) is provided inside the cylinder (1). CaO solid is placed inside the storage box (3).

2. The leakage detection device for a dynamic sealing structure according to claim 1, characterized in that: The lower surface of the connecting block (14) is provided with a first sensing sensor (15), the lower surface of the cylinder (1) is fixedly connected with a plurality of connecting rods (4), the bottom of the plurality of connecting rods (4) is fixedly connected with a connecting plate (5), the upper surface of the connecting plate (5) is fixedly connected with a frustum (16), the upper surface of the frustum (16) is provided with a second sensing sensor (17), and the second sensing sensor (17) is electrically connected to the computer.

3. The leakage detection device for a dynamic sealing structure according to claim 2, characterized in that: The lower surface of the connecting plate (5) is provided with a buzzer (6), and the buzzer (6) is electrically connected to the second sensing sensor (17).

4. The leakage detection device for a dynamic sealing structure according to claim 1, characterized in that: The mounting component is a fixed plate (2), which has multiple mounting holes arranged in a circular array.

5. The leakage detection device for a dynamic sealing structure according to claim 4, characterized in that: The upper surface of the fixed plate (2) is provided with an annular groove (19), and a sealing ring (20) is bonded inside the annular groove (19).

6. The leakage detection device for a dynamic sealing structure according to claim 1, characterized in that: A spring (13) is fixedly connected to the bottom inner wall of the limiting groove (10). The other end of the spring (13) is fixed to the lower surface of the piston (11), and the spring (13) is sleeved on the outside of the slide rod (12).

7. The leakage detection device for a dynamic sealing structure according to claim 1, characterized in that: The storage box (3) is provided with a fixing ring (18), and the bottom of the fixing ring (18) passes through the lower surface of the storage box (3). The fixing ring (18) is hollow.

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