Converter valve hall water leakage simulation test device

Abstract

The invention provides a converter valve hall water leakage simulation test device. The converter valve hall water leakage simulation test device comprises a movable chassis, a circulating water supply mechanism arranged on the movable chassis, a telescopic water supply support, a leakage point simulation assembly rotationally connected to the top of the telescopic water supply support, and an external communication unit. The leakage point simulation assembly comprises a plurality of water droppers used for simulating water leakage of the converter valve and the valve hall. The circulating water supply mechanism is communicated with a water path of the leakage point simulation assembly through a water supply pipeline of the telescopic water supply bracket; according to the device, water recycling is achieved by arranging the circulating water supply mechanism, the environmental cleanliness and converter valve equipment are not damaged, movement and stopping of the movable chassis are remotely operated through the external communication unit, and a valve hall all-directional water leakage test is carried out; water leakage tests are carried out at different positions and heights of the valve hall by adopting the telescopic water supply bracket and the plurality of water droppers, so that the real environmental conditions of water leakage of the valve hall can be fully restored, and abundant test objects are provided for verifying the water leakage detection method of the valve hall of the converter station.

Description

Technical Field

[0001] The invention belongs to the technical field of power generation and power transmission and transformation, and in particular relates to a valve hall water leakage simulation test device for a converter valve. Background Art

[0002] The converter valve is the core equipment of the DC transmission project. It connects the three-phase AC voltage to the DC terminal in sequence to obtain the desired DC voltage and realize the control of power. Its value accounts for about 22-25% of the total price of the converter station equipment. The converter valve is usually arranged in the valve hall of the converter station. The valve hall of the converter station is the installation and long-term operation site of the converter valve, providing constant temperature and humidity working conditions for the converter valve.

[0003] During normal operation, the converter valve will have current flowing through it, which will cause loss and heat generation. A special cooling system is usually configured. The working principle of the converter valve cooling system is that the cooling medium liquid flows through the converter valve, the temperature rises and the heat generated by the converter valve is taken out to the outside. After passing through the main circulation pump, it exchanges heat with the outdoor external circulation cooling system, so that the temperature of the cooling medium liquid is reduced to a reasonable range and then flows into the converter valve again, forming a closed circulation of the cooling medium liquid.

[0004] In actual projects, on the one hand, due to the corrosion of metal materials on the valve hall ceiling and the aging of organic polymer materials, water may leak from the top of the converter station valve hall. On the other hand, due to the aging of the sealing ring and the rupture of the water pipe, the converter valve body and the cooling water circulation system may leak or leak cooling water. If the converter valve or valve hall leakage is not discovered in time, it will cause secondary damage to the key equipment of the converter valve, thereby reducing the reliability of the converter valve equipment, affecting the operation of the DC transmission system, and causing serious economic losses.

[0005] Therefore, timely monitoring of the occurrence of valve hall leakage is of great significance to maintaining the safe and reliable operation of the valve and ensuring production safety. In the process of studying the valve hall leakage monitoring technology, a device is needed to quickly and accurately simulate different types of valve hall leakage faults, help improve the research efficiency of the valve hall leakage monitoring technology and reduce the test development cost. Summary of the invention

[0006] In order to overcome the deficiency of the above-mentioned prior art that it is unable to effectively simulate the leakage of the converter valve and the valve hall, the present invention proposes a converter valve valve hall leakage simulation test device, comprising:

[0007] A mobile chassis, a circulating water supply mechanism disposed on the mobile chassis, a telescopic water supply bracket connected to the circulating water supply mechanism, a leakage point simulation component rotatably connected to the top of the telescopic water supply bracket, and an external communication unit communicatively connected to the circulating water supply mechanism and the mobile chassis;

[0008] The leakage point simulation component includes a plurality of drippers for simulating water leakage of the converter valve and the valve hall;

[0009] The circulating water supply mechanism is connected to the water circuit of the leakage point simulation component through the water supply pipeline of the telescopic water supply bracket.

[0010] Preferably, the leakage point simulation component includes a mounting plate rotatably connected to the top of the telescopic water supply bracket, a plurality of drippers are circumferentially arranged on the mounting plate, a plurality of through holes are opened in the mounting plate, and the plurality of through holes correspond one-to-one with the plurality of drippers; one end of a through hole is connected to a dripper, and the other end can be switchably connected to the water supply pipeline of the telescopic water supply bracket through the rotation switching of the mounting plate.

[0011] Preferably, a rotating connector with an adjustable pitch angle is provided on the top of the telescopic water supply bracket, and the mounting plate is rotatably connected to the rotating connector, so as to adjust the pitch angle of the mounting plate and switch the connectivity of the plurality of drippers through the rotating connector.

[0012] Preferably, the circulating water supply mechanism includes a water pump, a circulating water tank and a dripping controller electrically connected to the water pump, which are arranged on a mobile chassis; the dripping controller is communicatively connected to the external communication unit, and the circulating water tank is arranged below the dripper to recover dripping water from the dripper; the water inlet of the water pump is connected to the circulating water tank, and the water outlet of the water pump is connected to the water supply pipeline of the telescopic water supply bracket.

[0013] Preferably, the telescopic water supply bracket includes a telescopic support rod and a water supply pipeline arranged on the telescopic support rod.

[0014] Preferably, a remote control module is provided on the mobile chassis, and the remote control module is communicatively connected with the external communication unit.

[0015] Preferably, the drip hole of the dripper is circular or square in shape.

[0016] Preferably, the drip hole diameter of the dripper is 1 mm to 20 mm.

[0017] Preferably, the drip holes of the plurality of drippers on the leakage point simulation component have different apertures.

[0018] Preferably, the drip holes of the plurality of drippers on the leakage point simulation component have the same shape.

[0019] Compared with the closest prior art, the present invention has the following beneficial effects:

[0020] The present invention provides a valve hall water leakage simulation test device for a converter valve, comprising a mobile chassis, a circulating water supply mechanism arranged on the mobile chassis, a telescopic water supply bracket connected to the circulating water supply mechanism, a leakage point simulation component rotatably connected to the top of the telescopic water supply bracket, and an external communication unit communicatively connected to the circulating water supply mechanism and the mobile chassis; the leakage point simulation component comprises a plurality of drippers for simulating water leakage of a converter valve and a valve hall; the circulating water supply mechanism is connected to the water channel of the leakage point simulation component through the water supply pipeline of the telescopic water supply bracket; the device can not only collect water droplets to prevent them from splashing into the valve hall by arranging the circulating water supply mechanism, but also can collect water droplets to prevent them from splashing into the valve hall. The system not only improves the environment, but also realizes the recycling of water, which is of environmental significance. Under the premise of not destroying the surface environmental cleanliness of the converter station valve hall and the converter valve equipment, the movement and stop of the mobile chassis can be remotely controlled through the external communication unit, and leakage tests can be carried out at all angles in the valve hall. Multiple drippers simulating leakage and telescopic water supply brackets are used to carry out leakage tests at different positions and heights in the valve hall, which can fully restore the environmental conditions of real valve hall leakage and provide rich test objects for verifying the leakage detection method of the converter station valve hall. Moreover, the external communication unit can accept external instructions to execute actions, and feedback the height, flow rate, shape and flow rate of water droplets. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a converter valve hall water leakage simulation test device provided by the present invention;

[0022] Figure 2 for Figure 1 The main view of

[0023] Figure 3 for Figure 1 Left view of;

[0024] Figure 4 A schematic diagram of the diameter distribution of a dripper with a circular drip hole provided by the present invention;

[0025] Figure 5 A schematic diagram of the diameter distribution of a square drip hole-shaped dripper provided by the present invention;

[0026] Figure 6 A schematic diagram of the functional structure of a converter valve hall water leakage simulation test device provided by the present invention;

[0027] Among them, 1. Mobile chassis; 2. Drip head; 3. Mounting plate; 4. Through hole; 5. Rotating connector; 6. Water pump; 7. Circulating water tank; 8. Drip controller; 9. Telescopic support rod; 10. Water supply pipeline. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0029] Embodiment 1:

[0030] The present invention provides a valve hall leakage simulation test device for a converter valve, such as Figures 1 to 3 As shown, including:

[0031] A mobile chassis 1, a circulating water supply mechanism disposed on the mobile chassis 1, a telescopic water supply bracket connected to the circulating water supply mechanism, a leakage point simulation component rotatably connected to the top of the telescopic water supply bracket, and an external communication unit communicatively connected to the circulating water supply mechanism and the mobile chassis 1;

[0032] The leakage point simulation component includes a plurality of drippers 2 for simulating leakage of the converter valve and the valve hall;

[0033] The circulating water supply mechanism is connected to the water circuit of the leakage point simulation component through the water supply pipeline of the telescopic water supply bracket.

[0034] The present invention can simulate different leakage modes of converter valves and converter station valve halls, has an external communication unit, can accept external instructions to execute actions, and can conveniently adjust and feedback important parameters such as leakage modes and flow rates, thereby realizing diversified simulation of converter valve and valve hall leakage faults and performance testing of leakage monitoring technology. By adjusting the seepage and leakage modes to simulate various leakage conditions of converter station valve halls, it can provide rich test objects for the research of leakage detection technology. The present invention arranges a circulating water supply mechanism, which can not only collect water droplets to prevent them from splashing into the valve hall environment, but also realize the recycling of water, which has environmental protection significance. Under the premise of not destroying the surface environmental cleanliness of the valve hall of the converter station and the converter valve equipment, the movement and stop of the mobile chassis can be remotely controlled through an external communication unit, and a leakage test can be performed at all angles in the valve hall. A plurality of drippers simulating leakage and a telescopic water supply bracket are used to perform leakage tests at different positions and heights in the valve hall, which can fully restore the environmental conditions of real valve hall leakage, and provide rich test objects for verifying the leakage detection method of the valve hall of the converter station. Moreover, the external communication unit can accept external instructions to execute actions, and feedback the height, flow rate, shape and flow rate of the water droplets to the outside.

[0035] In this embodiment, the leakage point simulation component includes a mounting plate 3 rotatably connected to the top of the telescopic water supply bracket, and multiple drippers 2 are circumferentially arranged on the mounting plate 3. Multiple through holes 4 are opened in the mounting plate 3, and the multiple through holes 4 correspond to the multiple drippers 2 one by one; one end of a through hole 4 is connected to a dripper 2, and the other end can be switchably connected to the water supply pipeline of the telescopic water supply bracket through the rotation switching of the mounting plate 3.

[0036] A test requires multiple prefabricated leak simulation components. Multiple physical drippers 2 with different apertures and shapes are pre-set on the installation plate 3 of the leak simulation component. By manually rotating the installation plate 3 of the prefabricated dripper or issuing instructions from the drip controller 8, the physical drippers with different drip aperture sizes and lower surface shapes can be switched, so that the device can simulate different leaking water droplets. Therefore, the installation plate 3 is detachable, which is convenient for replacing multiple leak simulation components.

[0037] It should be noted that the aperture size and the lower surface shape of the dripper 2 are switched by switching the prefabricated dripper mounting plate, namely the mounting plate 3, so as to achieve the diversification of the simulated leaking water droplets.

[0038] The diameter of the water droplets is achieved by changing the leaking dripper. There are many different sizes of holes on the prefabricated dripper mounting plate, which can be achieved by switching the drippers. The angle of the water droplets is changed by manually adjusting the angle of the rotation axis at the connection between the dripper and the bracket.

[0039] Conventional valve hall ceiling leakage is vertical from top to bottom. If it is a device leakage fault, the leakage direction may be an inclined parabolic leakage trajectory. Emphasizing that this device can simulate faults at different leakage angles is mainly to highlight the diversity of faults that can be simulated.

[0040] The adjustment of diameter and flow rate is also to realize water leakage failure under different conditions and provide rich test objects for the test of water leakage detection device.

[0041] In this embodiment, a rotating connector 5 with an adjustable pitch angle is provided on the top of the telescopic water supply bracket, and the mounting plate 3 is rotatably connected to the rotating connector 5, which is used to adjust the pitch angle of the mounting plate 3 and switch the connectivity of multiple drippers 2 through the rotating connector 5.

[0042] In one possible implementation, the rotating connector 5 includes two bases, which are connected by a ball joint to achieve adjustable pitch angle. One base is fixed on the top of the telescopic support rod 9, and the other base is rotatably connected to the mounting plate 3. The water supply pipeline of the telescopic water supply bracket passes through the two bases and is connected to a through hole 4 in the mounting plate 3. The water supply pipeline is a flexible pipeline at the ball joint connection to facilitate angle adjustment. When the mounting plate 3 rotates, the opening of the water supply pipeline is always downward and is only connected to the dripper 2 located on the vertical plane and whose opening is lower than the center plane of the mounting plate 3. Figure 2 As shown, a receiving cavity is provided on the mounting plate 3 for inserting the front end of the water supply pipe 10, and a plurality of through holes 4 are arranged radially. The receiving cavity is located at the center of the plurality of through holes 4 and is connected with the plurality of through holes. However, since the opening of the water supply pipe 10 is always downward, the water supply pipe 10 is only connected with the dripper 2 located on the vertical plane and whose opening is lower than the center plane of the mounting plate 3.

[0043] In one feasible method, a magnetic ring is provided on the base connected to the mounting disk 3, and a groove is opened on the mounting disk 3 for the front end of the base to be slightly embedded to achieve positioning. Ferromagnetic material is embedded in the groove to achieve the attraction between the mounting disk 3 and the base. After attraction, the mounting disk 3 and the base can be relatively rotated and connected, and are easy to disassemble.

[0044] On this basis, if the drip controller 8 is required to control the switching of the dripper 2, a gear transmission mechanism with a motor can be further installed to realize the controlled rotation of the mounting plate 3.

[0045] In another possible implementation, the mounting disk 3 and the base are connected by a synchronous rotation through a latch and are easy to disassemble. At this time, the mounting disk 3 is rotated, and the ball hinge part of the base connected to the mounting disk 3 rotates synchronously. However, since the opening of the water supply pipeline is always downward, the water supply pipeline is only connected to the dripper 2 located on the vertical plane and whose opening is lower than the center plane of the mounting disk 3.

[0046] In this embodiment, the circulating water supply mechanism includes a water pump 6, a circulating water tank 7 and a dripping controller 8 electrically connected to the water pump 6, which are arranged on the mobile chassis 1; the dripping controller 8 is communicatively connected to the external communication unit, and the circulating water tank 7 is arranged below the dripper 2 to recover the dripping water of the dripper 2; the water inlet of the water pump 6 is connected to the circulating water tank 7, and the water outlet of the water pump 6 is connected to the water supply pipeline of the telescopic water supply bracket.

[0047] It should be noted that the circulating water tank 7 is used to collect water dripping from the dripper 2 of the device to prevent water droplets from scattering onto the ground of the actual converter station valve hall during the test, and at the same time, the water collected in the tank can be recycled for subsequent dripping simulation.

[0048] Specifically, the four walls of the circulating water tank 7 have a suitable height to ensure that the splashing water after the water drops fall is still in the water tank, avoiding the leaking water from splashing on the ground. The circulating water tank 7 sends the collected leaking water to the dripper 2 through the water pump 6 to achieve the recycling of the leaking water.

[0049] The function of the drip controller 8 is to simulate the leakage fault of the dripping water and the leakage fault of the water column flowing in a stream. The leakage fault can simulate the different leakage modes of fast dripping and slow dripping by controlling the dripping frequency and the droplet size. The leakage fault can be simulated by adjusting the diameter, leakage flow and leakage angle of the water column. The dripping frequency and leakage flow mentioned above are realized by changing the speed of the water pump 6 motor, and the droplet size and leakage angle are realized by changing the leakage simulation dripper 2.

[0050] In this embodiment, the telescopic water supply bracket includes a telescopic support rod 9 and a water supply pipeline arranged on the telescopic support rod 9. By adjusting the height of the telescopic support rod 9, the actual effect of preventing water leakage from valve tower positions at different heights can be achieved.

[0051] For example, the water supply pipeline plate is attached to the outside of the telescopic support rod 9, so as to be able to extend and retract along with the telescopic support rod 9; or the telescopic support rod 9 is a hollow telescopic support rod, and the water supply pipeline is arranged in the cavity of the hollow telescopic support rod.

[0052] The water supply pipeline is a hose and can be extended and retracted along with the telescopic support rod 9.

[0053] In this embodiment, a remote control module is provided on the mobile chassis 1, and the remote control module is communicatively connected with the external communication unit.

[0054] It should be noted that according to the remote control command, the mobile chassis 1 is controlled to move through the remote control module, and the water leakage simulation test device is transmitted to various coordinate positions of the converter station valve hall, so as to realize the simulation of water leakage phenomena in all directions without blind spots in the converter station valve hall.

[0055] The remote control instructions of the mobile chassis 1 and the drip controller 8 are issued through the remote control. The remote control, as a human-computer interaction unit, provides a human-computer interaction interface for the test personnel. Through the buttons on the remote control, the remote chassis movement operation can be completed, and instructions can be sent to the drip controller to realize leakage faults with different leakage and leakage modes, etc., to achieve changes in the height of the dripping water drops of the device, the leakage and leakage modes, and the mobile chassis 1 can be remotely controlled to change the physical position of the test device.

[0056] Specifically, the device can be transported to the designated position of the valve hall by the small wheels configured on the mobile chassis 1 by receiving external action commands through the external communication unit. It receives the azimuth movement command from the remote control and mainly completes the movement and stop of the trolley.

[0057] like Figure 6As shown, the external communication unit is used to realize the communication function of the water leakage simulation test device, so that it can receive external communication instructions through Ethernet, such as instructions to execute the action of moving, stopping or dripping control, and feedback important parameter information such as the height, flow rate and shape of the water droplets, so as to simulate complex and diverse water leakage faults for water leakage detection technology research, and can be used for performance testing of water leakage monitoring technology. After receiving the external communication instructions, the relevant instructions will be transmitted to the drip controller 8 or the remote control module to execute the command in the next step, such as adjusting the water drop height, water drop shape and flow rate that the instruction needs to simulate. When the leakage parameters of this device need to be sent out, the actual leakage simulation parameters can be transmitted to the operator through the communication unit, wherein the drip controller 8 and the remote control module constitute the control unit of this device.

[0058] In this embodiment, the dripping hole of the dripper 2 is in a circular or square shape.

[0059] In this embodiment, the diameter of the dripping hole of the dripper 2 is 1 mm to 20 mm.

[0060] Specifically, Figure 4 and Figure 5 As shown, the drip hole diameters of multiple drippers 2 on a mounting plate 3 can be divided into six types of diameters: 1mm, 3mm, 5mm, 10mm, 16mm, and 20mm. Based on actual experience with water leakage failures, the shapes of the drip holes are divided into two types: circular and square. The water leakage holes of the converter valve are mainly of these two shapes. The above six types of apertures are the diameter of the circle and the side length of the square. The lower surface shapes of water droplets flowing out through circular and square holes are different. The circular and square holes are respectively located on a prefabricated mounting plate 3. The switching between circular and square requires manual replacement of the prefabricated mounting plate.

[0061] In this embodiment, the drip holes of the plurality of drippers 2 on the leakage point simulation component have different apertures.

[0062] In this embodiment, the drip holes of the plurality of drippers 2 on the leakage point simulation component have the same shape.

[0063] In summary, the present invention provides a converter valve hall leakage simulation test device, which is equipped with an external communication unit, can accept external instructions to execute leakage actions, and feedback important parameters such as the height, flow rate and shape of the leaking water. It can also fully restore the environmental conditions of the actual valve hall leakage without destroying the surface environmental cleanliness of the converter station valve hall and the converter valve equipment, and promote the development of converter valve and valve hall leakage detection technology;

[0064] The present invention combines the rotatable dripper 2 and the telescopic water supply bracket with the converter valve hall water leakage simulation test device, which can provide simulation of seepage and leakage fault events occurring from different heights, and has a rich test conditions for leakage objects, thereby realizing the converter valve and valve hall leakage simulation method;

[0065] The present invention provides a remotely controlled and movable converter valve and valve hall water leakage fault simulation test device, which can use a remote control chassis to remotely move the water leakage simulation test device to various positions in the test site, and through repeated water leakage tests at all angles of the valve hall, it can reduce the coverage blind area of ​​the water leakage detection method, and provide a test basis for the subsequent arrangement plan of the water leakage detection device;

[0066] The present invention configures an external communication unit for the converter valve hall water leakage simulation test device, which can transmit the operator's operating instructions to the execution unit and feed back the test parameters of the water leakage simulation to the background in real time;

[0067] The present invention equips the converter valve hall water leakage simulation test device with a circulating water tank 7, which can not only recycle the water source, but also ensure that the water droplets in the simulated water leakage test process and the splashes after falling into the water tank are collected inside the device, thereby avoiding pollution to the test site and damage to equipment caused by test leakage.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims of the present invention.

Claims

1. A valve hall leakage simulation test device for a converter valve, characterized in that: include: A mobile chassis (1), a circulating water supply mechanism disposed on the mobile chassis (1), a telescopic water supply bracket connected to the circulating water supply mechanism, a leakage point simulation component rotatably connected to the top of the telescopic water supply bracket, and an external communication unit communicatively connected to the circulating water supply mechanism and the mobile chassis (1); The leakage point simulation component comprises a plurality of drippers (2) for simulating water leakage of the converter valve and the valve hall; The circulating water supply mechanism is connected to the water circuit of the leakage point simulation component through the water supply pipeline of the telescopic water supply bracket.

2. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The leakage point simulation component comprises a mounting plate (3) rotatably connected to the top of the telescopic water supply bracket, a plurality of drippers (2) are circumferentially arranged on the mounting plate (3), a plurality of through holes (4) are provided in the mounting plate (3), and the plurality of through holes (4) are matched with the plurality of drippers (2) in a one-to-one correspondence; one end of a through hole (4) is connected to a dripper (2), and the other end is switchably connected to the water supply pipeline of the telescopic water supply bracket through the rotation switching of the mounting plate (3).

3. A converter valve hall water leakage simulation test device as claimed in claim 2, characterized in that: A rotating connector (5) with an adjustable pitch angle is provided on the top of the telescopic water supply bracket, and the mounting plate (3) is rotatably connected to the rotating connector (5) for adjusting the pitch angle of the mounting plate (3) and switching the connection between the plurality of drippers (2) via the rotating connector (5).

4. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The circulating water supply mechanism comprises a water pump (6) arranged on the mobile chassis (1), a circulating water tank (7) and a dripping controller (8) electrically connected to the water pump (6); the dripping controller (8) is communicatively connected to the external communication unit; the circulating water tank (7) is arranged below the dripper (2) to recover dripping water from the dripper (2); the water inlet of the water pump (6) is connected to the circulating water tank (7), and the water outlet of the water pump (6) is connected to the water supply pipeline of the telescopic water supply bracket.

5. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The telescopic water supply bracket comprises a telescopic support rod (9) and a water supply pipeline arranged on the telescopic support rod (9).

6. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The mobile chassis (1) is provided with a remote control module, and the remote control module is communicatively connected with the external communication unit.

7. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The drip hole of the dripper (2) is in the shape of a circle or a square.

8. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The dripping hole diameter of the dripper (2) is 1 mm to 20 mm.

9. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The drip holes of the plurality of drippers (2) on the leakage point simulation component have different diameters.

10. A converter valve hall water leakage simulation test device as claimed in claim 1, characterized in that: The drip holes of the plurality of drippers (2) on the leakage point simulation component have the same shape.

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