A kind of anti-interference type static water level system suitable for goaf substation

Abstract

The present application relates to the technical field of goaf subsidence monitoring, and specifically discloses an anti-interference static water level system suitable for a goaf substation, which comprises a liquid storage tank and a static water level observation sensor, the inside of the liquid storage tank is provided with a partition frame, the inside cavity of the liquid storage tank is divided into at least two normal cavities and one control cavity by the partition frame, a liquid level control mechanism is installed between the normal cavities and the control cavity, a main pipeline is installed on the surface of a liquid discharge port, an exhaust alarm mechanism is installed on the static water level observation sensor, an electric push rod is installed at the bottom end of the liquid storage tank, a separate discharge pipe is installed at the bottom end of each of the normal cavities and the control cavity, and a flow collecting valve is installed at the extension end of the separate discharge pipes. The static water level system can realize flexible liquid supply, can switch between high and low elevation liquid supply, has the function of equipment grouping installation, avoids the difficulty of static water level equipment installation, has the function of alarm feedback, and avoids the waste of antifreeze.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of goaf settlement monitoring, in particular to an anti-interference static leveling system suitable for a goaf substation. BACKGROUND

[0002] Under the disturbance of goaf substation engineering construction and the load of the substation, the original equilibrium state of the old goaf foundation of the substation is broken, the overlying rock-soil body of the goaf interacts and cooperatively settles, further superimposes the residual settlement deformation of the old goaf, thereby causing the surface movement and deformation of the goaf. The surface movement of the goaf can be divided into two forms of subsidence and horizontal movement, and the deformation can be divided into three forms of inclination, curvature and horizontal deformation. For the substation building (structure) and equipment in the goaf, the surface movement and deformation of the goaf are dynamic in time and space, and the above-mentioned five movements and deformations often occur simultaneously and superimpose, thereby affecting the safe operation of the substation building (structure) and equipment.

[0003] Therefore, the settlement deformation is the most important content threatening the safe operation of the substation building (structure) and equipment. In view of the engineering stratum geological conditions and structural characteristics of the coal mine goaf, and the current construction of the goaf substation on the ground, the type of settlement observation of the foundation of the substation building (structure) and power facility equipment is surface settlement observation in general.

[0004] In the case of goaf substation settlement monitoring, in order to avoid the interference of the electromagnetic field of the substation and improve the monitoring accuracy and reliability, a static leveling system is often used for detection, and the conventional static leveling system adopts the principle of a connecting pipe, which requires that the equipment be installed on the same leveling plane. However, in actual engineering, the installation effect of the unified leveling plane cannot be realized due to the constraints of the site conditions.

[0005] In order to overcome the problem that the static leveling equipment cannot be installed to maintain a unified leveling plane, in the prior art, each equipment is installed in groups and supplied with liquid separately, thereby the grouping number needs to be numbered, and multiple liquid storage tanks and related liquid supply components need to be assembled, which causes the entire static leveling system equipment, pipelines and the like to be complex, the equipment cost is high, and manual installation, actual operation and the like are greatly tested. SUMMARY

[0006] The present application relates to the technical field of goaf settlement monitoring, in particular to an anti-interference static leveling system suitable for a goaf substation.

[0007] In order to achieve the above object, the present application provides the following technical scheme: A kind of anti-interference static level system suitable for goaf substation, including liquid storage tank and static level observation sensor, the bottom end of static level observation sensor is equipped with air pressure balance connection end and fiber grating signal end, the inside of the liquid storage tank is equipped with partition, and partition separates the inner chamber of liquid storage tank into at least two conventional cavities and one control cavity, liquid level control mechanism is installed between the conventional cavity and control cavity;

[0008] The side surface of the liquid storage tank near the conventional cavity and control cavity is equipped with drain pipe, and the surface of drain pipe is equipped with main pipeline, a plurality of static level observation sensors are installed on the main pipeline by branch pipe, and drain alarm mechanism is installed on the static level observation sensor.

[0009] The bottom end of the liquid storage tank is equipped with electric push rod, and the bottom end of the electric push rod is equipped with positioning frame, and the bottom end of the conventional cavity and control cavity is equipped with branch pipe, and the branch pipe extends out of the liquid storage tank, and the extension end of the branch pipe is equipped with a common flow valve.

[0010] Preferably, the cross frame is installed between the bottom end of the liquid storage tank and the top end of the electric push rod, and the cross frame is staggered with the branch pipe.

[0011] Preferably, the top end of the liquid storage tank is detachably equipped with an end cover, the top end of the end cover is equipped with a signal processor, the top end of the end cover on one side of the signal processor is equipped with a liquid adding pipe, the liquid adding pipe extends downward, and the liquid adding pipe is above the control cavity.

[0012] Preferably, the liquid level control mechanism includes a multi-purpose pipe, a multi-way valve and a combined submersible pump, the combined submersible pump is installed inside the control cavity, the port of the combined submersible pump is equipped with a multi-way valve, and at least two multi-purpose pipes are installed on the port of the multi-way valve, one end of the multi-purpose pipe is inside the conventional cavity.

[0013] Preferably, the surface of the liquid storage tank on one side of the drain pipe is equipped with a liquid level sensor, and the probe of the liquid level sensor extends into the liquid storage tank.

[0014] Preferably, the top of the static level observation sensor is equipped with a liquid inlet shell, one side of the liquid inlet shell is provided with a pipe, and the pipe is connected with the end of the branch pipe, and a control valve is installed at the connection between the branch pipe and the main pipeline.

[0015] Preferably, the top of the liquid inlet shell is equipped with a buoyancy shell, the top end of the buoyancy shell is equipped with a top cover, and the drain alarm mechanism is installed at the top end of the liquid inlet shell on one side of the buoyancy shell.

[0016] Preferably, the exhaust alarm mechanism comprises an exhaust cap, an end sleeve, an alarm and a liquid detector, the end sleeve is installed at the top of the liquid inlet shell on one side of the buoyancy shell, the exhaust cap is sleeved at the top of the end sleeve, the alarm is installed at the top of the exhaust cap, the liquid detector is installed on the circumferential surface of the exhaust cap, and the probe of the liquid detector is located at the gap between the exhaust cap and the end sleeve.

[0017] Preferably, the inner wall of the exhaust cap is provided with a sealing ring at the bottom end, an electric pull rod is installed between the bottom surface of the exhaust cap and the liquid inlet shell, and the bottom surface of the end sleeve is sleeved with a sealing ring, and the inner wall of the exhaust cap is provided with a plug at the top end.

[0018] Preferably, the surface of the static water level observation sensor is provided with a distribution box, and the distribution box is connected with the alarm through an electric circuit.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] 1、The application is suitable for a goaf substation anti-interference type static water level system, the internal space of a single liquid storage tank is divided and treated, different liquid level height cavities can be obtained, when the static water level system is used by means of the communication pipe principle, each static water level observation sensor can be avoided to be uniformly installed on the same level plane, grouping operation can be carried out, different liquid level height cavities are single groups, liquid supply operation is carried out on the single group of static water level observation sensors for the cavity, and then the installation and use difficulty of the actual static water level system is reduced, under the action of the liquid level control mechanism, other conventional cavities are adjusted in liquid level based on the control cavity, which is beneficial to the realization of the subsequent communication pipe principle, and then the internal liquid level of different groups of static water level observation sensors and even the float height are changed, and the conventional use demand is met.

[0021] 2、The application is suitable for a goaf substation anti-interference type static water level system, through the combination of the distribution pipe, the liquid adding pipe and the flow valve, when the static water level observation sensor is installed on the goaf substation site, the anti-freezing liquid flowing out of the flow valve can be uniformly supplied to the whole system, which is beneficial to targeted liquid supply and achieves the effect of flexible use, and by means of the electric push rod, the up and down height of the whole liquid storage tank can be adjusted, and then the hydraulic pressure of the anti-freezing liquid itself is changed, and by means of the hydraulic pressure change, each static water level device is adjusted.

[0022] 3, The anti-interference type static water level system suitable for the goaf substation can discharge air while liquid is fed into the static water level observation sensor, and the height of the exhaust cap is close to the lowest height of the liquid level contacting the floating ball inside the buoyancy shell, so that the floating ball has contacted the antifreeze liquid after the antifreeze liquid is discharged, the precision of subsequent measurement is ensured, and the liquid detector can alarm after detecting that the antifreeze liquid flows out, reminding the staff that the liquid level has reached the actual required height, and the exhaust cap is driven downward by the electric pull rod to close the end sleeve, so that the antifreeze liquid of the static water level observation sensor is prevented from overflowing and causing loss of antifreeze liquid during subsequent adjustment of other static water level observation sensors.

[0023] 4, The anti-interference type static water level system suitable for the goaf substation, on the basis of the optical fiber grating signal end and the air pressure balance connection end, processes information such as the electric pull rod and the liquid detector by the tap box, and the signals of the tap box are transmitted by the optical fiber grating signal, which can be fed back to the static water level system, thereby facilitating the control of the liquid in the liquid storage tank and achieving the effects of information feedback and centralized processing. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the overall system structure diagram of the application;

[0025] Figure 2 It is the static water level observation sensor structure diagram of the application;

[0026] Figure 3 It is the overall system structure diagram of the application; Figure 2 It is the local enlarged structure diagram of A in the application;

[0027] Figure 4 It is the internal structure diagram of the exhaust cap of the application;

[0028] Figure 5 It is the liquid storage tank structure diagram of the application;

[0029] Figure 6 It is the internal structure diagram of the liquid storage tank in the top view state of the application.

[0030] In the figure: 1, liquid storage tank; 2, static level observation sensor; 3, main pipe; 4, control valve; 5, air pressure balance connection end; 6, branch pipe; 7, buoyancy shell; 8, liquid level sensor; 9, electric push rod; 10, positioning frame; 11, top cover; 12, liquid inlet shell; 13, fiber Bragg grating signal end; 14, distribution box; 15, exhaust cap; 16, electric pull rod; 17, end sleeve; 18, alarm; 19, sealing ring; 20, liquid detector; 21, sealing ring; 22, plug; 23, cross; 24, liquid discharge pipe; 25, liquid filling pipe; 26, end cover; 27, signal processor; 28, flow collecting valve; 29, branch pipe; 30, multipurpose pipe; 31, multi-way valve; 32, combined submersible pump; 33, partition frame; 34, conventional cavity; 35, control cavity. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] As Figures 1 to 6As shown, the embodiment is suitable for the anti-interference static water level system of the goaf substation, which comprises a liquid storage tank 1 and a static water level observation sensor 2. The liquid storage tank 1 stores the antifreeze liquid used in normal conditions, and the static water level observation sensor 2 has existing components such as buoyancy assembly and fiber bragg grating. The different liquid levels can affect the grating signals. The bottom end of the static water level observation sensor 2 is provided with a gas pressure balance connecting end 5 and a fiber bragg grating signal end 13. The two can feed back the signals to the communication bus on site in the form of cable, and the signals are processed by data demodulation instrument and other equipment, thereby forming an anti-interference static water level system. The inside of the liquid storage tank 1 is provided with a partition frame 33, which divides the inside space of the liquid storage tank 1 into several parts. The partition frame 33 divides the inner cavity of the liquid storage tank 1 into at least two normal cavities 34 and one control cavity 35. The control cavity 35 is internally provided with standby antifreeze liquid, and the antifreeze liquid in the other normal cavities 34 is directly supplied to the outside static water level observation sensor 2 for use. The number of normal cavities 34 corresponds to the number of static water level observation sensors 2. The liquid level control mechanism is installed between the normal cavities 34 and the control cavity 35, which can supply the antifreeze liquid in the control cavity 35 to the normal cavities 34 or extract the liquid in the normal cavities 34 to the control cavity 35, thereby changing the liquid level in the normal cavities 34. The side surface of the liquid storage tank 1 near the normal cavities 34 and the control cavity 35 is provided with a liquid discharge port 24, which can be used as a liquid discharge channel for the control cavity 35 and the normal cavities 34. The surface of the liquid discharge port 24 is provided with a main pipeline 3. A single main pipeline 3 supplies liquid to a single static water level observation sensor 2. A plurality of static water level observation sensors 2 are installed on the main pipeline 3 through branch pipes 6. A plurality of static water level observation sensors 2 form a group, which can be used for anti-settlement detection operation of the single-face substation wall. The static water level observation sensor 2 is provided with an exhaust alarm mechanism. The bottom end of the liquid storage tank 1 is provided with an electric push rod 9, which has telescopic function and is externally connected to power supply and configured with travel control switch and other equipment. The bottom end of the electric push rod 9 is provided with a positioning frame 10, which is in the form of tripod and can be inserted into the ground to position and support the electric push rod 9 and the liquid storage tank 1. The bottom end of the normal cavities 34 and the control cavity 35 is provided with a distribution pipe 29, which is different from the liquid discharge port 24. The distribution pipe 29 extends out of the liquid storage tank 1, and the extension end of the distribution pipe 29 is jointly provided with a flow collecting valve 28. The flow collecting valve 28 is actually connected to all the distribution pipes 29 to collectively discharge the antifreeze liquid discharged from the distribution pipes 29, which can be used in the case of large amount of static water level observation sensors 2, thereby avoiding insufficient liquid supply.

[0034] Specifically, a cross frame 23 is installed between the bottom end of the liquid storage tank 1 and the top end of the electric push rod 9. The cross frame 23 is staggered with the distribution pipe 29. The cross frame 23 can increase the contact area of the electric push rod 9 and the liquid storage tank 1, and improve the stability of the connection and support structure.

[0035] Further, the top end of the liquid storage tank 1 is detachably mounted with an end cover 26, which can be connected by bolts and nuts, facilitating the opening of the end cover 26 for maintenance of the inside of the liquid storage tank 1. The top end of the end cover 26 is mounted with a signal processor 27, which can feed the liquid level condition of the liquid storage tank 1 to the remote terminal signal by means of wireless transmission mode. The top end of the end cover 26 on one side of the signal processor 27 is mounted with a liquid adding pipe 25, which extends downwardly and is above the control cavity 35. In the case of insufficient antifreeze in the liquid storage tank 1, the liquid adding pipe 25 can be opened to add antifreeze to the inside of the control cavity 35.

[0036] Further, the liquid level control mechanism includes a multi-purpose pipe 30, a multi-way valve 31 and a combined submersible pump 32. The combined submersible pump 32 is installed inside the control cavity 35. The combined submersible pump 32 is a conventional device equipped with a reversible motor and other components, which can realize the dual functions of water pumping and water draining. The port of the combined submersible pump 32 is mounted with the multi-way valve 31, and the port of the multi-way valve 31 is mounted with at least two multi-purpose pipes 30. If the number of multi-purpose pipes 30 is large, a plurality of multi-way valves 31 need to be additionally installed. One end of the multi-purpose pipe 30 is inside the conventional cavity 34, which is actually pumped and drained by the combined submersible pump 32 to achieve the purpose of liquid level adjustment.

[0037] Further, the surface of the liquid storage tank 1 on one side of the liquid outlet pipe 24 is mounted with a liquid level sensor 8, and the probe of the liquid level sensor 8 extends into the inside of the liquid storage tank 1, which can control the liquid level in the liquid storage tank 1, each conventional cavity 34 and even the control cavity 35.

[0038] Further, the top of the static water level observation sensor 2 is mounted with a liquid inlet housing 12, one side of which is provided with a pipe opening connected with the end of the branch pipe 6. The antifreeze enters the inside of the liquid inlet housing 12 and then flows into the inside of the static water level observation sensor 2. The connection between the branch pipe 6 and the main pipe 3 is mounted with a control valve 4, which can be used to close the pipeline when a single static water level observation sensor 2 is not in use, so as to avoid waste of antifreeze.

[0039] Further, the top of the liquid inlet housing 12 is mounted with a buoyancy housing 7, which is actually used to install a buoyancy assembly inside. The top end of the buoyancy housing 7 is mounted with a top cover 11, which facilitates the opening of the buoyancy housing 7 for maintenance of the inside thereof. The exhaust alarm mechanism is mounted at the top end of the liquid inlet housing 12 on one side of the buoyancy housing 7.

[0040] Further, the exhaust alarm mechanism includes an exhaust cap 15, an end sleeve 17, an alarm 18 and a liquid detector 20. The end sleeve 17 is installed at the top end of the liquid inlet shell 12 on one side of the buoyancy shell 7, and the end sleeve 17 is in communication with the inside of the liquid inlet shell 12. It can be used for the internal exhaust of the static water level observation sensor 2 during the installation process of the entire system and when the antifreeze liquid is filled. The exhaust cap 15 is sleeved on the top of the end sleeve 17. The alarm 18 is installed at the top end of the exhaust cap 15. The alarm 18 can be selected according to the actual situation, such as an audible and visual alarm or a remote signal alarm. The liquid detector 20 is installed on the circumferential surface of the exhaust cap 15, and the probe of the liquid detector 20 is located at the gap between the exhaust cap 15 and the end sleeve 17. When the liquid filling in the static water level observation sensor 2 is completed, the liquid level contacts the buoyancy assembly, and the liquid level is higher than the end sleeve 17. The liquid will be discharged from the exhaust cap 15, and then detected by the liquid detector 20. The liquid detector 20 is electrically connected with the alarm 18, which can detect and alarm the antifreeze overflow.

[0041] Further, the inner wall bottom end of the exhaust cap 15 is provided with a sealing ring 19, which is a concave ring structure. The bottom surface of the exhaust cap 15 is provided with an electric pull rod 16 between the bottom surface of the exhaust cap 15 and the liquid inlet shell 12. The electric pull rod 16 is a small electric push rod assembly with telescopic control function and is connected with the internal circuit of the alarm 18. The bottom surface of the end sleeve 17 is sleeved with a sealing ring 21 made of conventional rubber material. The top end of the inner wall of the exhaust cap 15 is provided with a plug 22 made of soft rubber. When the alarm 18 alarms, an electric signal is fed back to the control circuit, and the electric pull rod 16 is controlled to retract, so that the exhaust cap 15 moves downward, the plug 22 blocks the opening at the top of the end sleeve 17 below, and the sealing ring 19 of the exhaust cap 15 contacts the sealing ring 21 below to achieve the effect of stress extrusion, thereby forming a sealing effect on the entire end sleeve 17 to prevent the antifreeze from continuing to overflow.

[0042] Further, the surface of the static water level observation sensor 2 is provided with a distribution box 14, and the distribution box 14 is connected with the alarm 18 through a circuit. When the alarm 18 is a remote alarm device, the electric signal generated can be processed by the internal circuit of the distribution box 14. The circuit of the distribution box 14 can transmit signals through a cable to avoid the interference of the electromagnetic field of the transformer substation on the wireless signal transmission around.

[0043] The specific use method of the embodiment is: when installing the whole static water level system, the situation of the building to be measured is considered, for example, when a single transformer substation foundation wall needs a large number of static water level observation sensors 2, the situation of insufficient liquid supply may exist, the collecting valve 28 can be directly opened to supply the antifreeze liquid in the whole liquid tank 1 to the single main pipeline 3, and the antifreeze liquid is provided to the group of static water level observation sensors 2 from the main pipeline 3. Because there are many infrastructure facilities in the goaf transformer substation, there are many infrastructure facilities that need to be monitored, the heights of the various infrastructure facilities are different, the heights of the observation points are different, in order to avoid the problem that the installation difficulty is large due to the uniform installation height of the static water level observation sensors 2, the drain pipe openings 24 of the multiple conventional cavities 34 are connected to the multiple main pipelines 3, the static water level observation sensors 2 on the single main pipeline 3 are installed as a group, after installation and calibration of the height, the control valve 4 is opened to supply liquid to the corresponding static water level observation sensors 2, when the alarm 18 of a static water level observation sensor 2 in a single group of static water level observation sensors 2 is active, the actual installation height of the static water level observation sensor 2 is lower than that of the other static water level observation sensors 2, and whether the position height needs to be adjusted is considered by the staff, and after several groups of static water level observation sensors 2 are installed, because the heights of the various observation points and even the building to be measured are different, some need a higher liquid level to increase the hydraulic pressure, the combined submersible pump 32 in the control cavity 35 is opened according to the height of the observation point, the antifreeze liquid in the control cavity 35 is transported into the corresponding conventional cavity 34, the liquid level in the conventional cavity 34 is raised, and the problem that the liquid level height needs to be different due to different observation points is solved. When actually used, the signal of a single static water level observation sensor 2 is output through the fiber grating signal end 13 and the air pressure balance connection end 5, and is fed back to the data demodulation instrument on the spot of the goaf transformer substation through the line, data calculation is performed, and the terminal is fed back to the remote terminal through the local area network or wireless signal transmitting device, so that the remote data monitoring and alarm effect is realized.

[0044] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-interference static leveling system suitable for substations in goaf areas, comprising a liquid storage tank and a static leveling observation sensor, wherein the bottom end of the static leveling observation sensor is equipped with a pressure balance connection terminal and a fiber optic grating signal terminal, characterized in that: The liquid storage tank is equipped with a partition frame, which divides the inner cavity of the liquid storage tank into at least two conventional chambers and one control chamber. A liquid level control mechanism is installed between the conventional chamber and the control chamber. Drainage ports are installed on the side surfaces of the storage tanks adjacent to the conventional chamber and the control chamber, and main pipelines are installed on the surfaces of the drainage ports. Several static level observation sensors are installed on the main pipelines via branch pipes, and each static level observation sensor is equipped with an exhaust alarm mechanism. An electric push rod is installed at the bottom of the liquid storage tank, and a positioning frame is installed at the bottom of the electric push rod. Both the conventional chamber and the control chamber are equipped with distribution pipes at their bottom ends. The distribution pipes extend out of the liquid storage tank, and a flow-collecting valve is installed at the extended ends of the distribution pipes. The hydrostatic leveling sensor has an inlet housing mounted on top, with a port on one side that connects to the end of a branch pipe. A control valve is installed at the connection between the branch pipe and the main pipe. A buoyancy housing is mounted on top of the inlet housing, with a top cover on the top of the buoyancy housing. An exhaust alarm mechanism is mounted on the top of the inlet housing on one side of the buoyancy housing. The exhaust alarm mechanism includes an exhaust cap, an end sleeve, an alarm, and a liquid detector. The end sleeve is mounted on the top of the inlet housing on one side of the buoyancy housing, the exhaust cap is fitted onto the top of the end sleeve, the alarm is mounted on the top of the exhaust cap, and the liquid detector is mounted on the circumferential surface of the exhaust cap, with the probe of the liquid detector positioned in the gap between the exhaust cap and the end sleeve. A sealing ring is installed at the bottom of the inner wall of the exhaust cap, an electric pull rod is installed between the bottom surface of the exhaust cap and the inlet housing, a sealing ring is fitted onto the bottom surface of the end sleeve, and a plug is installed at the top of the inner wall of the exhaust cap.

2. The anti-interference type static leveling system for substations in goaf areas according to claim 1, characterized in that: A cross is installed between the bottom of the liquid storage tank and the top of the electric push rod, and the cross is staggered and arranged in separate rows of pipes.

3. The anti-interference type static leveling system for substations in goaf areas according to claim 1, characterized in that: The top of the liquid storage tank is detachably fitted with an end cap, and a signal processor is installed on the top of the end cap. A liquid filling pipe is installed on the top of the end cap on one side of the signal processor. The liquid filling pipe extends downward and is located above the control chamber.

4. The anti-interference type static leveling system for substations in goaf areas according to claim 1, characterized in that: The liquid level control mechanism includes a multi-purpose pipe, a multi-way valve, and a combined submersible pump. The combined submersible pump is installed inside the control chamber. A multi-way valve is installed at the port of the combined submersible pump, and at least two multi-purpose pipes are installed at the port of the multi-way valve. One end of the multi-purpose pipe is inside the conventional chamber.

5. The anti-interference type static leveling system for substations in goaf areas according to claim 4, characterized in that: Liquid level sensors are installed on the surface of the storage tank on one side of the drain pipe, and the probes of the liquid level sensors extend into the storage tank.

6. The anti-interference type static leveling system for substations in goaf areas according to claim 1, characterized in that: The surface of the hydrostatic leveling sensor is equipped with a junction box, and the junction box is connected to the alarm via a circuit.

Images