Substation trench multistage drainage system
By setting up a drainage pump group and a level gauge in the substation trench, combined with a water storage well and a pneumatic diaphragm pump, the automatic multi-stage drainage of the substation trench is achieved, solving the problem of water level overflow in the substation trench and improving safety and efficiency.
Patent Information
- Application Number
- CN202422402219.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing substation gutters are difficult to achieve automated and safe multi-level drainage in extreme weather such as heavy rain, resulting in the risk of water level overflow, and manual monitoring consumes manpower and is not timely.
A multi-stage drainage system for substations is designed, including a drainage pump group, a level gauge and a water storage drainage well. The water level gauge is used to monitor the water level and start the drainage pump group in stages. Combined with a pneumatic diaphragm pump, it realizes automatic drainage to prevent water level from exceeding the standard.
Automatic monitoring of trench water level and multi-level drainage are realized, manual intervention is reduced, safe and reliable drainage effect is ensured, equipment damage is avoided, and human resources are saved.
Smart Images
Figure CN223214702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a substation trench multi-stage drainage system used in the substation drainage field. Background Art
[0002] For substations built within power plants, trenches are typically dug as underground spaces for water diversion and drainage to ensure the proper operation of the power system. To ensure safety, the trenches are covered with a plate to prevent personnel from stepping on empty space. This results in a lack of light and darkness within the trenches, making observation difficult. The trenches are responsible for draining water out of the substation and generally have a reasonable drainage capacity. However, during rainy days, the water level in the trenches rises, requiring the plates to be opened for manual monitoring and periodic external pumping to assist in draining the trenches and maintain a safe water level. This is labor-intensive. Furthermore, during heavy rain or sudden increases in rainfall, drainage may not be timely, and the water level may exceed the surface of the trenches, causing overflow and damage to the substation's electrical equipment. Since the ditch is a long and narrow waterway structure, the water flow and water level in it will undergo periodic changes. The water levels in different sections of the ditch are not the same at the same time, and the position of the water level peak in the ditch cannot be clearly determined. The existing technical means of monitoring the ditch water level by setting a liquid level meter in a certain area to control the water pump is likely to cause the risk of overflow in other sections. Utility Model Content
[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a substation trench multi-stage drainage system, which can realize water storage and multi-stage drainage of the substation trench and ensure that the trench water level is safe.
[0004] A technical solution to achieve the above object is: a multi-stage drainage system for a substation trench, comprising a drainage pump set, a liquid level meter and a trench;
[0005] A water storage and drainage well is dug on the side of the ditch near the substation. The edge of the water storage and drainage well is slightly higher than the maximum water level of normal drainage in the ditch. The liquid level meter is set at the bottom of the water storage and drainage well. The outer cover is connected to a wave-breaking cover, and a vent is opened on the top of the wave-breaking cover. The liquid level meter outputs different water depth signals and warning water level signals according to the water depth of the water storage and drainage well. The drainage pump group includes at least two drainage pumps, each of which is connected to a water depth signal. The water inlet of each drainage pump leads to the bottom of the water storage and drainage well. Drainage is started after receiving the corresponding water depth signal. The substation main control is connected to the warning water level signal and is closed after receiving the warning water level signal.
[0006] Furthermore, a well cover with a filtering structure is provided at the mouth of the water storage and drainage well.
[0007] Furthermore, in the trench surrounding the substation, a water storage and drainage well is dug at fixed intervals, and a drainage pump group and a liquid level meter are installed.
[0008] Furthermore, the drainage pump is a pneumatic diaphragm pump.
[0009] The utility model provides a multi-stage drainage system for a substation trench. Under normal working conditions, the trench is responsible for draining water out of the substation. When the water level in the trench rises due to working conditions or weather factors, the excess water in the trench will first be collected in a water storage and drainage well, which will serve as a buffer for the excess water. When the amount of water in the water storage and drainage well accumulates to a certain level, the amount of water in the water storage and drainage well is monitored by a liquid level gauge, the drainage pump group is started in stages, and the substation system is shut down when the water level reaches the warning level. When the water level in the water storage and drainage well drops, the drainage pump group is shut down, and drainage by the trench is resumed. The utility model can realize unmanned automatic monitoring of the trench water level, motorized automatic drainage, and automatic alarm, saving manpower and being safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a structural diagram of the normal drainage state of the substation trench;
[0011] Figure 2 The utility model is a structural schematic diagram of a substation trench multi-stage drainage system when it is activated. DETAILED DESCRIPTION
[0012] In order to better understand the technical solution of the present invention, the following is a detailed description through specific embodiments:
[0013] See also Figure 1 Under normal operating conditions, ditch 1 is responsible for drainage.
[0014] See also Figure 2 When the water level in the ditch rises due to heavy rain or other emergencies, the water in the ditch first overflows the edge of the water storage and drainage well 2 and accumulates in the water storage and drainage well. At this time, the water storage and drainage well assumes the function of buffering to prevent the water level in the ditch from rising suddenly and rapidly, and the management personnel have no time to respond.
[0015] The liquid level meter 3 is set at the bottom of the water storage and drainage well, and its outer cover is connected to the wave-breaking shield 4, and a vent is opened on the top of the wave-breaking shield. When the water in the water storage and drainage well accumulates further and submerges the liquid level meter 3, the multi-stage drainage system switches from the dormant state to the standby state. The liquid level meter 3 maintains continuous monitoring of the water level and outputs different water depth signals and warning water level signals according to the water depth of the water storage and drainage well. The drainage pump group includes at least two drainage pumps 5, each of which is connected to a water depth signal. The water inlet of each drainage pump leads to the bottom of the water storage and drainage well, and the drainage is started after receiving the corresponding water depth signal. Due to the limited space in the water storage and drainage well, water fluctuations will be generated when the drainage pump is working. The function of the wave-breaking shield 4 is to prevent water waves from affecting the measurement of the liquid level meter. The substation main control 6 is connected to the warning water level signal and is shut down after receiving the warning water level signal.
[0016] Preferably, the drainage pump is a pneumatic diaphragm pump.
[0017] Preferably, a water well cover 21 with a filtering structure is provided at the mouth of the water storage and drainage well to prevent garbage and debris in the ditch from entering the water storage and drainage well and affecting the drainage of the drainage pump.
[0018] In another embodiment, a water storage and drainage well is dug at regular intervals in the trench surrounding the substation, and the same drainage pump set and liquid level gauge are installed. This can maximize the safety of the water level in different sections of the trench.
[0019] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.
Claims
1. A multi-stage drainage system for a substation trench, comprising a drainage pump set, a liquid level gauge, and a trench, characterized in that: A water storage and drainage well is dug on the side of the ditch near the substation. The edge of the water storage and drainage well is slightly higher than the maximum water level of normal drainage in the ditch. The liquid level meter is set at the bottom of the water storage and drainage well. The outer cover is connected to a wave-breaking cover, and a vent is opened on the top of the wave-breaking cover. The liquid level meter outputs different water depth signals and warning water level signals according to the water depth of the water storage and drainage well. The drainage pump group includes at least two drainage pumps, each of which is connected to a water depth signal. The water inlet of each drainage pump leads to the bottom of the water storage and drainage well. Drainage is started after receiving the corresponding water depth signal. The substation main control is connected to the warning water level signal and is closed after receiving the warning water level signal.
2. A substation trench multi-stage drainage system according to claim 1, characterized in that: A water well cover with a filtering structure is provided at the mouth of the water storage and drainage well.
3. A substation trench multi-stage drainage system according to any one of claims 1 to 2, characterized in that: In the trench surrounding the substation, a water storage and drainage well is dug at fixed intervals, and a drainage pump group and a liquid level meter are installed.
4. A substation trench multi-stage drainage system according to claim 1, characterized in that: The drainage pump is an air-operated diaphragm pump.