A small current nondestructive monitoring device for electromagnetic valve of gas turbine with perforated structure

Abstract

The utility model provides a kind of small current nondestructive monitoring device of gas turbine solenoid valve of perforated structure, including mutual inductor body, wiring port being opened in mutual inductor body, still including monitoring hole being opened in mutual inductor, hall sensor being connected in mutual inductor body and being set outside monitoring hole, analog input card being electrically connected with hall sensor, analog input card is used to upload data to control system, monitoring hole is used to place the power supply wire of solenoid valve, and wire fixing mechanism for keeping wire stable is connected on mutual inductor body.The small current nondestructive monitoring device of gas turbine solenoid valve of perforated structure provided by the utility model can non-contact nondestructive monitoring to the power supply wire of solenoid valve, obtain current condition, and does not affect the normal work of gas turbine, improve practicality.

Description

Technical Field

[0001] This utility model belongs to the field of instrument technology, specifically relating to a real-time detection device for a gas turbine solenoid valve with a perforated structure. Background Technology

[0002] The solenoid valve in a gas turbine is one of the core components of the control system. Its operating status directly affects the stable operation of the gas turbine. A malfunction in the solenoid valve can trigger a chain reaction, including system control failure and loss of safety protection functions. In severe cases, it can lead to unplanned shutdowns of the gas turbine unit, resulting in significant losses. Therefore, real-time monitoring of the operating status of the gas turbine's solenoid valves is necessary.

[0003] Currently, the inspection of gas turbine solenoid valves mainly relies on manual maintenance, specifically requiring periodic checks of the solenoid valves using testing equipment while the turbine is shut down. However, this method has significant limitations: shutdown maintenance interrupts the equipment's production process, affecting work efficiency. If real-time monitoring of the solenoid valves is adopted, the wiring of the monitoring device needs to be kept stable to prevent it from breaking contact with the internal components due to external influences. Therefore, to overcome these shortcomings, a monitoring device capable of stably monitoring the operation of the solenoid valve is needed. This invention addresses this technical problem. Utility Model Content

[0004] This invention provides a perforated structure gas turbine solenoid valve low-current non-destructive monitoring device, which can perform non-contact non-destructive monitoring of the power supply wire of the solenoid valve to obtain the current status without affecting the normal operation of the gas turbine, thus improving its practicality.

[0005] A perforated gas turbine solenoid valve low-current non-destructive monitoring device includes a current transformer body, a wiring port on the current transformer body, a monitoring hole on the current transformer, a Hall sensor connected to the current transformer body and sleeved outside the monitoring hole, and an analog input card electrically connected to the Hall sensor. The analog input card is used to upload data to the control system. The monitoring hole is used to place the power supply wire of the solenoid valve. A wire fixing mechanism for keeping the wire stable is connected to the current transformer body. The current transformer body is slidably connected to a track.

[0006] Furthermore, the wire fixing mechanism includes a base plate connected to the transformer body wheel, a guide assembly connected to the base plate, a pressing assembly connected to the guide assembly, a limiting assembly connected to the guide assembly, and a support assembly connected to the base plate. The support assembly and the pressing assembly are used to clamp the wire, and the limiting assembly is used to limit the pressing assembly.

[0007] Furthermore, the guide assembly includes a guide post connected to the base plate, a guide groove formed in the guide post, a sliding groove formed on the side of the guide post and communicating with the guide groove, an elastic element connected in the guide groove, a connecting post connected to the elastic element, and a slider connected to the connecting post. The slider is slidably connected in the sliding groove and connected to the pressing assembly. The guide post is connected to the limiting assembly.

[0008] Furthermore, the guide assembly includes a pressure plate connected to the slider and an upper arc-shaped groove formed at the bottom of the pressure plate, the upper arc-shaped groove being used to accommodate the wire.

[0009] Furthermore, the support assembly includes a support plate connected to the base plate and a lower arc-shaped groove formed on the top of the support plate, the lower arc-shaped groove being used to accommodate wires.

[0010] Furthermore, the elastic element includes a connecting cylinder connected in the guide groove and connected to the base plate, and a spring connected in the connecting cylinder, the top of the spring being connected to the bottom end of the connecting column.

[0011] Furthermore, the limiting component includes a connecting block connected to the side of the guide post, a through groove formed in the connecting block, a connecting shaft rotatably connected in the through groove, and a limiting rod connected to the top end of the connecting shaft, the bottom end of the connecting shaft being connected to a limiting piece.

[0012] Furthermore, the top end of the connecting post is connected to the connecting piece, and the diameter of the connecting piece is larger than the inner diameter of the guide groove.

[0013] Furthermore, a fixing block is connected to the side of the guide post, and the fixing block is connected to the transformer body.

[0014] The technical effects of this utility model are as follows: (1) The current transformer body in this scheme is provided with a monitoring hole for the placement of the power supply wire. The Hall sensor will monitor the current signal of the power supply wire in real time and transmit the monitored information to the analog input card, and finally to the Mark VIe control system. The staff can view the current status through the human-machine interface of the Mark VIe control system. In this way, non-contact real-time monitoring of the power supply wire of the solenoid valve can be realized. In addition, the monitoring status can be fed back by alarm when the monitoring status is abnormal according to the HMI interface. This effectively realizes real-time monitoring and safety warning of the solenoid valve operation status. The current data can be continuously obtained without stopping the gas turbine equipment. This allows the staff to understand the working status of the solenoid valve according to the change of current. This overcomes the disadvantage of manual maintenance requiring shutdown, avoids losses caused by shutdown, improves monitoring efficiency, and reduces manpower input, thereby saving labor costs. (2) The current transformer is installed inside the gas turbine control cabinet. The control cabinet has multiple 3.5 cm wide track grooves in the limited space to standardize the installation of control devices such as switches and relays. In this scenario, in order to match the installation rules of the control cabinet, the current transformer is designed with a slot at the bottom, which can be directly inserted into the track groove of the control cabinet without the need for bolt fixing or other operations, which is very convenient and efficient. (3) In some application scenarios, the wires connected to the terminal may shake, and the shaking of the wires may affect the contact between the wires and the current transformer. Therefore, in this scenario, this solution designs a wire fixing mechanism. The wire fixing mechanism clamps the wires connected to the terminal, so that the wires close to the terminal are kept stable, thereby achieving stable monitoring of the power supply wires and avoiding affecting the monitoring work. (4) The limiting mechanism in this solution can limit the pressing component. When the connecting piece is attached to the top of the guide post, the limiting rod can be rotated to the top of the connecting piece, thereby pressing the connecting piece and preventing the connecting post from moving. At this time, the spring is compressed, thereby preventing the pressing component from moving, so that the pressing component can cooperate with the support mechanism to clamp the wire and maintain the clamping state. (5) When the wire needs to be replaced, the limit rod can be rotated again to separate it from the connecting piece. Under the action of the spring force, the connecting column will move outward, thereby driving the pressing component away from the support mechanism, canceling the clamping of the wire, and making it easier for the staff to operate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of Example 1.

[0016] Figure 2 This is a schematic diagram of the transmitter body in this utility model.

[0017] Figure 3 This is a schematic diagram of the wire fixing mechanism in Example 2.

[0018] Figure 4 This is a schematic diagram of the limiting mechanism in this utility model.

[0019] Figure 5 This is a schematic diagram of the internal structure of the elastic element in this utility model.

[0020] The attached diagram is labeled as follows: 1. Current transformer body; 2. Monitoring hole; 3. Wiring port; 4. Fixing block; 5. Pressure plate; 6. Lower arc groove; 7. Support plate; 8. Base plate; 9. Guide column; 10. Connecting block; 11. Limiting rod; 12. Connecting piece; 13. Limiting piece; 14. Connecting shaft; 15. Connecting cylinder; 16. Spring; 17. Connecting column; 18. Slider; 19. Slide groove; 20. Guide groove; 21. Track. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described in conjunction with specific embodiments and accompanying drawings.

[0022] Example 1

[0023] See Figures 1-2 A perforated gas turbine solenoid valve low-current non-destructive monitoring device includes a current transformer body 1, a wiring port 3 on the current transformer body 1, a monitoring hole 2 on the current transformer, a Hall sensor connected inside the current transformer body 1 and sleeved outside the monitoring hole 2, and an analog input card electrically connected to the Hall sensor. The analog input card is used to upload data to the control system. The monitoring hole 2 is used to house the power supply wire of the solenoid valve. A wire fixing mechanism for keeping the wire stable is connected to the current transformer body 1. The current transformer body 1 is slidably connected to a rail 21. In this embodiment, the wire fixing mechanism is an interface connected to the side of the current transformer body 1. The wire passes through the interface and connects to the inside of the current transformer body 1. The interface in this embodiment is common knowledge in the art, and its structure and working principle will not be described in detail here.

[0024] In this embodiment, the Hall sensor is circular and located inside the transformer body 1, with the monitoring hole 2 situated within the central circular hole. Therefore, when the power supply wire passes through the monitoring hole 2, the Hall sensor can detect the change in current. The control system in this embodiment is a Mark VIe DCS system, and an HMI (Human-Machine Interface) is used to display the change in current in the power supply wire, specifically represented by a current change curve. Operators can view the current status through the HMI interface in the Mark VIe control system. Furthermore, based on the HMI interface, alarms can be triggered to report any abnormalities, effectively achieving real-time monitoring and safety warnings for the solenoid valve's operating status. The connection method between the Hall sensor and the analog input card, the method by which the analog input card transmits information to the control system, and the control system and HMI are all common knowledge in the art. Their specific working principles and the connection methods between components are existing technologies understood by those skilled in the art and will not be detailed here. The Hall sensor and power supply wire are not shown in the figures.

[0025] Example 2

[0026] See Figures 3-5 Based on Embodiment 1, this utility model also provides another embodiment, specifically optimizing the wire fixing mechanism, including: a wire fixing mechanism connected to the transformer body 1, the wire fixing mechanism including a base plate 8 connected to the transformer body 1, a guide assembly connected to the base plate 8, a pressing assembly connected to the guide assembly, a limiting assembly connected to the guide assembly, and a support assembly connected to the base plate 8. The support assembly and the pressing assembly are used to clamp the wire, and the limiting assembly is used to limit the pressing assembly. In this embodiment, the power supply wire refers to the power supply wire connected to the solenoid valve, and the wire refers to the wire connected to the wiring port 3 of the transformer body 1. The wire is not shown in the figure.

[0027] Furthermore, the guide assembly includes a guide post 9 connected to the base plate 8, a guide groove 20 formed within the guide post 9, a sliding groove 19 formed on the side of the guide post 9 and communicating with the guide groove 20, an elastic member connected within the guide groove 20, a connecting post 17 connected to the elastic member, and a slider 18 connected to the connecting post 17. The slider 18 is slidably connected within the sliding groove 19 and connected to the pressing assembly. The guide post 9 is connected to the limiting assembly. In this embodiment, the top end of the guide groove 20 is located at the top of the guide post 9, and the bottom end is located at the bottom of the guide post 9. The sliding groove 19 is formed on the side of the guide post 9, and its length is less than the length of the guide groove 20.

[0028] Furthermore, the guide assembly includes a pressure plate 5 connected to the slider 18 and an upper arc-shaped groove formed at the bottom of the pressure plate 5, the upper arc-shaped groove being used to accommodate the wire.

[0029] Furthermore, the support assembly includes a support plate 7 connected to the base plate 8 and a lower arc-shaped groove 6 formed on the top of the support plate 7, the lower arc-shaped groove 6 being used to accommodate the wire. In this embodiment, arc-shaped soft pads are respectively connected to the upper arc-shaped groove and the lower arc-shaped groove to protect the outer sheath of the wire.

[0030] Furthermore, the elastic element includes a connecting cylinder 15 connected within the guide groove 20 and connected to the base plate 8, and a spring 16 connected within the connecting cylinder 15, with the top of the spring 16 connected to the bottom end of the connecting post 17.

[0031] Furthermore, the limiting assembly includes a connecting block 10 connected to the side of the guide post 9, a through groove formed in the connecting block 10, a connecting shaft 14 rotatably connected in the through groove, and a limiting rod 11 connected to the top end of the connecting shaft 14. The bottom end of the connecting shaft 14 is connected to a limiting piece 13. Under the combined action of the limiting piece 13 and the limiting rod 11, the connecting shaft 14 will be positioned within the through groove, preventing it from falling out of the through groove.

[0032] Furthermore, the top end of the connecting post 17 is connected to the connecting piece 12, and the diameter of the connecting piece 12 is larger than the inner diameter of the guide groove 20.

[0033] Furthermore, a fixing block 4 is connected to the side of the guide column 9, and the fixing block 4 is connected to the transformer body 1.

[0034] In this embodiment, the bottom of the current transformer body 1 is slidably connected to the track 21, and the wire fixing mechanism is connected to the side of the current transformer body 1. Since the power supply wire is long, when it is necessary to monitor other positions of the power supply wire, the current transformer body 1 can be slid on the track 21 to move the current transformer body 1 to the position that needs to be monitored.

[0035] The working process of this embodiment is as follows: When it is necessary to clamp the wire connected to the terminal 3, the operator needs to press down the pressure plate 5. The pressure plate 5 will drive the slider 18 and the connecting post 17 to move down, thereby compressing the spring 16. When the pressure plate 5 moves to the point where the bottom surface contacts the top surface of the support plate 7, the upper arc groove and the lower arc groove 6 will be spliced ​​into a round hole to accommodate the wire. At this time, the spring 16 is compressed, and the connecting piece 12 at the top of the connecting post 17 will fit against the top of the guide post 9. Then, the limiting rod 11 needs to be rotated. Driven by the limiting rod 11, the connecting shaft 14 will rotate in the through groove, so that the limiting rod 11 can rotate smoothly. When the limiting rod 11 rotates to above the connecting piece 12, the bottom of the limiting rod 11 will fit against the top surface of the connecting piece 12, so that the connecting piece 12 is clamped between the limiting rod 11 and the top surface of the guide post 9, thereby positioning the connecting piece 12. This can prevent the connecting post 17 from moving under the action of the spring force of the spring 16, and further prevent the connecting post 17 from shaking under external influence, thus further ensuring the clamping effect. When it is necessary to replace the wire or to end the clamping for other reasons, the limit rod 11 needs to be rotated again to separate it from the connecting piece 12. After the limit is lost, the connecting post 17 will move outward and reset under the action of the spring force of the spring 16, thereby driving the pressure plate 5 to move and separate it from the support plate 7, thus canceling the clamping of the wire.

[0036] The technical features not described in detail in this solution are based on the conventional operation and general understanding of those skilled in the art and are derived from existing technologies, and will not be elaborated further here.

[0037] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A perforated structure gas turbine solenoid valve low-current non-destructive monitoring device, comprising a current transformer body (1) and a wiring port (3) opened on the current transformer body (1), characterized in that, It also includes a monitoring hole (2) opened on the current transformer, a Hall sensor connected inside the current transformer body (1) and sleeved outside the monitoring hole (2), and an analog input card electrically connected to the Hall sensor. The analog input card is used to upload data to the control system. The monitoring hole (2) is used to place the power supply wire of the solenoid valve. The current transformer body (1) is connected to a wire fixing mechanism for keeping the wire stable. The current transformer body (1) is slidably connected to the track (21).

2. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 1, characterized in that, The wire fixing mechanism includes a base plate (8) connected to the transformer body (1), a guide component connected to the base plate (8), a pressing component connected to the guide component, a limiting component connected to the guide component, and a support component connected to the base plate (8). The support component and the pressing component are used to clamp the wire, and the limiting component is used to limit the pressing component.

3. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 2, characterized in that, The guide assembly includes a guide post (9) connected to the base plate (8), a guide groove (20) formed in the guide post (9), a slide groove (19) formed on the side of the guide post (9) and communicating with the guide groove (20), an elastic element connected in the guide groove (20), a connecting post (17) connected to the elastic element, and a slider (18) connected to the connecting post (17). The slider (18) is slidably connected in the slide groove (19) and connected to the pressing assembly. The guide post (9) is connected to the limiting assembly.

4. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 3, characterized in that, The guide assembly includes a pressure plate (5) connected to the slider (18) and an upper arc groove formed at the bottom of the pressure plate (5), the upper arc groove being used to accommodate wires.

5. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 2, characterized in that, The support assembly includes a support plate (7) connected to the base plate (8) and a lower arc groove (6) formed on the top of the support plate (7), the lower arc groove (6) being used to accommodate wires.

6. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 3, characterized in that, The elastic element includes a connecting cylinder (15) connected in the guide groove (20) and connected to the base plate (8), and a spring (16) connected in the connecting cylinder (15), the top of the spring (16) being connected to the bottom end of the connecting post (17).

7. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 3, characterized in that, The limiting assembly includes a connecting block (10) connected to the side of the guide post (9), a through groove opened in the connecting block (10), a connecting shaft (14) rotatably connected in the through groove, and a limiting rod (11) connected to the top end of the connecting shaft (14). The bottom end of the connecting shaft (14) is connected to the limiting piece (13).

8. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 3, characterized in that, The top end of the connecting post (17) is connected to the connecting piece (12), and the diameter of the connecting piece (12) is greater than the inner diameter of the guide groove (20).

9. The perforated structure gas turbine solenoid valve low-current non-destructive monitoring device according to claim 3, characterized in that, The guide post (9) is connected to a fixing block (4) on its side, and the fixing block (4) is connected to the transformer body (1).

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