A governor pressure tank air leakage detection device

Abstract

This utility model discloses a gas leak detection device for a speed governor pressure oil tank, belonging to the field of oil tank detection. It includes a base plate, with an oil tank body fixed to the top of the base plate. A sealing cover is provided above the base plate, and a sealing groove is formed on the top of the base plate. The sealing cover is embedded in the sealing groove, and a rubber ring is fixed to the outer surface of the sealing cover. The sealing cover is connected to the base plate via a connecting mechanism, and a detection mechanism is provided on the sealing cover. Through the setting of the detection mechanism, this utility model utilizes a gas sensor array unit composed of an oxygen sensor, a combustible gas sensor, an infrared gas sensor, and a semiconductor gas sensor. This array unit can comprehensively detect various gas components related to leaks. For example, changes in oxygen concentration reflect whether outside air has entered; the combustible gas sensor monitors leaks of combustible gases such as lubricating oil vapor; and the infrared and semiconductor gas sensors accurately capture trace amounts of organic and reducing gases.

Description

Technical Field

[0001] This utility model relates to the field of oil tank detection technology, and in particular to a speed governor pressure oil tank leakage detection device. Background Technology

[0002] In power generation systems, the governor pressure oil tank is a key component of the speed control system for water turbines, steam turbines, and other similar systems. Its stable operation is crucial. The pressure oil tank stores high-pressure oil, which provides power to the speed control system and ensures that the unit can accurately adjust the speed according to load changes, thus maintaining the stable operation of the power system. However, due to the effects of vibration, corrosion, temperature changes, and other factors during long-term operation, the pressure oil tank will inevitably experience problems such as aging of seals and cracks on the tank surface, which in turn leads to air leakage.

[0003] Currently, the traditional method for detecting leaks in governor pressure oil tanks mainly relies on manual inspections. Workers determine whether there is a leak by applying soapy water to observe the generation of bubbles or by using a simple gas detector close to the surface of the tank. However, these methods have many drawbacks. Manually applying soapy water is extremely inefficient, it is difficult to accurately detect tiny leaks, and it is extremely inconvenient to operate in special locations such as high altitudes or confined spaces. Simple gas detectors also have limited accuracy. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a speed governor pressure oil tank leakage detection device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A speed governor pressure oil tank leakage detection device includes a base plate, an oil tank body fixed to the top of the base plate, a sealing cover above the base plate, a sealing groove formed on the top of the base plate, the sealing cover being embedded in the sealing groove, a rubber ring fixed to the outer surface of the sealing cover, the sealing cover being connected to the base plate via a connecting mechanism, a detection mechanism on the sealing cover, the detection mechanism including a gas sensor array unit disposed within the sealing cover, a PLC controller fixed to the top of the sealing cover, a buzzer fixed to the top of the sealing cover, and the PLC controller being electrically connected to the buzzer.

[0007] Preferably, the gas sensor array unit includes a mounting block disposed within a sealed cover, on which an oxygen sensor and a combustible gas sensor are mounted. The mounting block also has an infrared gas sensor and a semiconductor gas sensor mounted on it. The PLC controller is electrically connected to the oxygen sensor, the combustible gas sensor, the infrared gas sensor, and the semiconductor gas sensor.

[0008] Preferably, the sealing cover is provided with an adjustment mechanism for moving the mounting block. The adjustment mechanism includes a motor fixed to the top of the sealing cover, a turntable fixed to the output shaft end of the motor, a connecting rod fixed to the outer surface of the turntable, and a rectangular shell fixed to the end of the connecting rod away from the turntable.

[0009] Preferably, a second motor is fixed inside the rectangular shell, a lead screw is fixed to the output shaft end of the second motor, a lifting block is threaded onto the outer surface of the lead screw, and the mounting block is fixed on the lifting block.

[0010] Preferably, the rectangular shell has limit grooves on both sides, the lifting block has limit blocks fixed on both sides, and the limit blocks slide within the limit grooves.

[0011] Preferably, the connecting mechanism includes a rectangular block fixed to the outer surface of the sealing cover, a screw fixed to the top of the base plate, the rectangular block and the screw being slidably connected, and a limit sleeve being threadedly connected to the outer surface of the screw.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. Through the setup of the detection mechanism, the gas sensor array unit, composed of oxygen sensors, combustible gas sensors, infrared gas sensors, and semiconductor gas sensors, can comprehensively detect various gas components related to leaks. For example, changes in oxygen concentration reflect whether outside air has entered, combustible gas sensors monitor leaks of combustible gases such as lubricating oil vapor, and infrared and semiconductor gas sensors accurately capture trace amounts of organic and reducing gases. In conjunction with a PLC controller and a buzzer, it can achieve accurate detection and timely alarm of leaks, effectively avoiding missed detections and false detections, and significantly improving detection accuracy and reliability.

[0014] 2. By adjusting the mechanism, the detection position of the gas sensor array unit can be flexibly adjusted to fully cover the space inside the sealed cover, avoid detection blind spots, and improve the comprehensiveness and accuracy of detection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a speed regulator pressure oil tank leakage detection device proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the connection mechanism of a speed regulator pressure oil tank leakage detection device proposed in this utility model.

[0017] Figure 3 This utility model proposes a speed governor pressure oil tank leakage detection device. Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4This is a bottom view of the internal structure of the sealing cover of a speed regulator pressure oil tank leakage detection device proposed in this utility model.

[0019] Figure 5 This is a cross-sectional view of the sealing cover structure of a speed governor pressure oil tank leakage detection device proposed in this utility model;

[0020] Figure 6 This utility model proposes a speed governor pressure oil tank leakage detection device. Figure 5 Enlarged view of the structure at point B in the middle.

[0021] In the diagram: 1. Base plate; 2. Tank body; 3. Sealing cover; 30. Sealing groove; 31. Rubber ring; 41. Rectangular block; 42. Screw; 43. Limit sleeve; 51. Mounting block; 52. Oxygen sensor; 53. Combustible gas sensor; 54. Infrared gas sensor; 55. Semiconductor gas sensor; 56. PLC controller; 57. Buzzer; 61. Motor 1; 62. Turntable; 63. Connecting rod; 64. Rectangular shell; 65. Motor 2; 66. Lead screw; 67. Lifting block; 68. Limit groove; 69. Limit block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Reference Figures 1-6 A speed regulator pressure oil tank leakage detection device includes a base plate 1, an oil tank body 2 fixed to the top of the base plate 1, a sealing cover 3 above the base plate 1, a sealing groove 30 formed on the top of the base plate 1, the sealing cover 3 being embedded in the sealing groove 30, a rubber ring 31 fixed to the outer surface of the sealing cover 3, the sealing cover 3 being connected to the base plate 1 through a connecting mechanism, a detection mechanism being provided on the sealing cover 3, the detection mechanism including a gas sensor array unit set inside the sealing cover 3, a PLC controller 56 fixed to the top of the sealing cover 3, a buzzer 57 fixed to the top of the sealing cover 3, and the PLC controller 56 being electrically connected to the buzzer 57.

[0025] Furthermore, the gas sensor array unit includes a mounting block 51 disposed within the sealing cover 3. An oxygen sensor 52 and a combustible gas sensor 53 are mounted on the mounting block 51. An infrared gas sensor 54 and a semiconductor gas sensor 55 are also mounted on the mounting block 51. A PLC controller 56 is electrically connected to the oxygen sensor 52, the combustible gas sensor 53, the infrared gas sensor 54, and the semiconductor gas sensor 55.

[0026] Furthermore, the sealing cover 3 is provided with an adjustment mechanism for moving the mounting block 51. The adjustment mechanism includes a motor 61 fixed to the top of the sealing cover 3. A turntable 62 is fixed to the output shaft end of the motor 61. A connecting rod 63 is fixed to the outer surface of the turntable 62. A rectangular shell 64 is fixed to the end of the connecting rod 63 away from the turntable 62.

[0027] Furthermore, the connecting mechanism includes a rectangular block 41 fixed to the outer surface of the sealing cover 3, a screw 42 fixed to the top of the base plate 1, the rectangular block 41 and the screw 42 being slidably connected, and a limit sleeve 43 being threadedly connected to the outer surface of the screw 42.

[0028] The sealing cover 3 is embedded in the sealing groove 30 opened at the top of the base plate 1. The rectangular block 41 on the outer surface of the sealing cover 3 is slidably connected to the screw 42 at the top of the base plate 1. By tightening the limiting sleeve 43 on the screw 42, the sealing cover 3 is firmly connected to the base plate 1. The rubber ring 31 on the edge of the sealing cover 3 ensures a tight fit with the surface of the oil tank 2, forming a closed detection space to prevent external gas from interfering with the detection. When the oil tank 2 leaks, the leaked gas enters the sealing cover 3. The oxygen sensor 52 on the mounting block 51 inside the sealing cover 3 detects the change in oxygen concentration to determine whether outside air has entered. The combustible gas sensor 53 monitors the leakage of combustible gases such as lubricating oil vapor. The infrared gas sensor 54 and the semiconductor gas sensor 55, with their high sensitivity, accurately capture trace amounts of organic and reducing gases. These sensors convert the detected gas signals into electrical signals and transmit them to the PLC controller 56. The PLC controller 56 processes and analyzes the electrical signals. When the detected gas parameters reach the preset leakage standard, it immediately controls the buzzer 57 to issue an alarm signal.

[0029] Based on Example 1, Example 2:

[0030] Reference Figures 1-6 ,

[0031] Furthermore, a second motor 65 is fixed inside the rectangular shell 64, a lead screw 66 is fixed to the output shaft end of the second motor 65, a lifting block 67 is threadedly connected to the outer surface of the lead screw 66, and a mounting block 51 is fixed on the lifting block 67.

[0032] Furthermore, the rectangular shell 64 has limit grooves 68 on both sides, and the lifting block 67 has limit blocks 69 fixed on both sides, with the limit blocks 69 sliding in the limit grooves 68.

[0033] Motor 61 is started, which drives turntable 62 to rotate. The connecting rod 63 on the outer surface of turntable 62 moves accordingly, thereby causing rectangular shell 64 to move in a circular motion in the horizontal direction. Motor 65 inside rectangular shell 64 drives lead screw 66 to rotate. Lifting block 67, which is threaded to lead screw 66, moves steadily up and down along lead screw 66 under the constraint of limit block 69 and limit groove 68. This drives the gas sensor array unit to move, realizing flexible adjustment of the spatial position of gas sensor array unit within sealing cover 3. This allows gas sensor array unit to detect various areas within sealing cover 3, eliminating blind spots and ensuring comprehensive and accurate detection of gas leaks.

[0034] It should be noted that the gas sensor array unit only needs to rotate 360 ​​degrees to prevent the wires from affecting the rotation of the gas sensor array unit.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A speed governor pressure oil tank leakage detection device, comprising a base plate (1), characterized in that, The top of the base plate (1) is fixed with an oil tank body (2). A sealing cover (3) is provided above the base plate (1). A sealing groove (30) is opened on the top of the base plate (1). The sealing cover (3) is embedded in the sealing groove (30). A rubber ring (31) is fixed on the outer surface of the sealing cover (3). The sealing cover (3) is connected to the base plate (1) through a connecting mechanism. A detection mechanism is provided on the sealing cover (3). The detection mechanism includes a gas sensor array unit set in the sealing cover (3). A PLC controller (56) is fixed on the top of the sealing cover (3). A buzzer (57) is fixed on the top of the sealing cover (3). The PLC controller (56) is electrically connected to the buzzer (57).

2. The speed regulator pressure oil tank leakage detection device according to claim 1, characterized in that, The gas sensor array unit includes a mounting block (51) disposed inside a sealed cover (3). An oxygen sensor (52) and a combustible gas sensor (53) are mounted on the mounting block (51). An infrared gas sensor (54) and a semiconductor gas sensor (55) are also mounted on the mounting block (51). The PLC controller (56) is electrically connected to the oxygen sensor (52), the combustible gas sensor (53), the infrared gas sensor (54), and the semiconductor gas sensor (55).

3. The speed regulator pressure oil tank leakage detection device according to claim 2, characterized in that, The sealing cover (3) is provided with an adjustment mechanism for moving the mounting block (51). The adjustment mechanism includes a motor (61) fixed on the top of the sealing cover (3). A turntable (62) is fixed to the output shaft end of the motor (61). A connecting rod (63) is fixed to the outer surface of the turntable (62). A rectangular shell (64) is fixed to the end of the connecting rod (63) away from the turntable (62).

4. The speed governor pressure oil tank leakage detection device according to claim 3, characterized in that, The rectangular shell (64) contains a second motor (65), and the output shaft of the second motor (65) is fixed with a lead screw (66). The outer surface of the lead screw (66) is threaded with a lifting block (67), and the mounting block (51) is fixed on the lifting block (67).

5. The speed governor pressure oil tank leakage detection device according to claim 4, characterized in that, Limiting grooves (68) are provided on both sides of the rectangular shell (64), and limiting blocks (69) are fixed on both sides of the lifting block (67). The limiting blocks (69) slide in the limiting grooves (68).

6. The speed governor pressure oil tank leakage detection device according to claim 1, characterized in that, The connecting mechanism includes a rectangular block (41) fixed on the outer surface of the sealing cover (3), a screw (42) fixed on the top of the base plate (1), the rectangular block (41) and the screw (42) being slidably connected, and a limit sleeve (43) being threadedly connected to the outer surface of the screw (42).

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