Mine water pump automatic water pre-injection pipeline system and remote control method

Abstract

The invention discloses an automatic pre-injection water pipeline system of a mine water pump and a remote control method. One end of the water inlet pipeline is communicated with the water tank; one end of the water pump is communicated with the other end of the water inlet pipeline; the motor is electrically connected with the water pump; the water outlet pipeline is communicated with the other end of the water pump; the electric butterfly valve is connected to the water outlet pipeline; the exhaust pipeline is connected between the other end of the water pump and the water inlet end of the electric butterfly valve; the intelligent pressure switch is connected to the exhaust pipeline; one end of the water pre-injection pipeline is connected to the water inlet pipeline between the water pool and the water pump, and the other end of the water pre-injection pipeline is connected to the water outlet pipeline at the water outlet end of the check valve. The system has the beneficial effects that automatic water pre-injection and automatic exhaust operation can be remotely controlled before the water pump is started, and meanwhile the running state of a water pump system is monitored.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline systems, and in particular relates to an automatic pre-injection pipeline system for a mine water pump and a remote control method. Background Art

[0002] Centrifugal pumps commonly used in mines do not have self-priming capabilities, so water diversion devices need to be installed to drain and transfer water. The blades of a centrifugal pump obtain centrifugal energy by throwing water, thereby generating negative pressure at the inlet. Without a water diversion device, the negative pressure generated by the air alone cannot suck in well water. Therefore, before starting the water pump, it is usually necessary to fill the water pump with water and equip it with a water diversion device. If the water pump is not equipped with a water diversion device, the water pump and pipeline may not be completely filled with water, which may cause the water pump to dry out, unable to fill water, cavitation, and even burn out the motor.

[0003] At present, the centrifugal pump water diversion and exhaust methods in traditional mines are all through artificial water injection. Although this method can meet production requirements to a certain extent, it requires a lot of human resources and requires continuous rotation of the manual lever of the valve every time it is started and stopped, which takes a long time to realize the opening and closing of the pipeline; at the same time, the process water is inconvenient to allocate, and the water department needs to communicate remotely with the pump room, and the water control is cumbersome; there are safety hazards, the pump room pond is deep, and it is dangerous to manually operate the valve in bad weather or late at night. In view of the problem that the end actuator in the traditional mine pump room is manually controlled and it is difficult to realize automated production management, it is urgent to adjust and improve the existing mechanical system according to production needs to adapt to new operating needs and improve system performance.

[0004] For example, China Utility Model Patent Publication No. CN218542622U discloses a centrifugal pump water diversion device for mines, including: a water tank; a water inlet, which is opened on one side of the water tank and connected to a water suction pipe; a water outlet, one end of which is connected to the inlet of the centrifugal pump and the other end extends close to the bottom of the water tank; a water supply port, which is opened on the top of the water tank and is suitable for supplying water to the water tank through the water supply port; when the centrifugal pump needs to divert water, the water tank is filled with water through the water supply port before that, and then the water inlet of the water tank is connected to the water suction pipe, and the water outlet pipe is connected to the centrifugal pump. The centrifugal pump works to discharge the water in the mine through the water suction pipe, the water tank, and the centrifugal pump, thus realizing the diversion of the centrifugal pump. This device still needs manual operation. Summary of the invention

[0005] In view of the current situation and problems of traditional mines mentioned above, the purpose of the present invention is to provide a new pipeline system and control method. By using this system and method, automatic pre-water injection and automatic exhaust operations can be remotely controlled before the water pump is started, and the operating status of the water pump system can be monitored at the same time.

[0006] The technical solution of the present invention is: an automatic pre-water injection pipeline system for a mine water pump, comprising: a water tank; a water inlet pipeline, one end of which is connected to the water tank; a water pump, one end of which is connected to the other end of the water inlet pipeline; a motor, which is electrically connected to the water pump; a water outlet pipeline, which is connected to the other end of the water pump; an electric butterfly valve, which is connected to the water outlet pipeline; a check valve, which is connected to the water outlet pipeline and is connected to the water outlet end of the electric butterfly valve; an exhaust pipeline, which is connected between the other end of the water pump and the water inlet end of the electric butterfly valve; a second electric ball valve, which is connected to the exhaust pipeline; an intelligent pressure switch, which is connected to the exhaust pipeline; a pre-water injection pipeline, one end of which is connected to the water inlet pipeline between the water tank and the water pump, and the other end is connected to the water outlet pipeline at the water outlet end of the check valve; and a power distribution room, which is signal-connected to the motor, the electric butterfly valve and the second electric ball valve.

[0007] An improvement of the above solution is that an electromagnetic flowmeter close to the other end of the pre-injection pipeline is connected to the water outlet pipeline.

[0008] A further improvement of the above solution is that a first electric ball valve is provided on one end of the pre-injection pipeline.

[0009] The power distribution room in the above solution is signal-connected to the first electric ball valve.

[0010] In the above scheme, there are six water pumps in a group of two, and the outlet pipelines of the two water pumps in each group are merged and connected to form a joint pipeline.

[0011] A further improvement of the above solution is that a manual butterfly valve is connected to one of the combined pipelines.

[0012] Another improvement of the above solution is that a manual butterfly valve is connected to the water outlet pipes corresponding to the other two combined pipes.

[0013] A remote control method for an automatic pre-injection water pipeline system for a mine water pump comprises the following steps: remote automatic pre-injection water: remotely opening a first electric ball valve and a second electric ball valve through a power distribution room. After the system operates normally, the flow direction of the automatic pre-injection water in the pipeline is: liquid flows back from the outlet pipeline through the branch pipeline of the pre-injection pipeline to the water inlet pipeline; remote automatic exhaust: remotely opening the second electric ball valve, judging whether the pressure feedback of the intelligent pressure switch reaches a preset value, after reaching the preset value, the automatic exhaust water flow direction in the pipeline is: gas and liquid enter from the outlet pipeline and then flow out from the exhaust pipeline, and the intelligent pressure switch remotely closes the second electric ball valve and the first electric ball valve after detecting the water flow pressure; remote automatic water production: remotely controlling the motor start-up through the power distribution room, opening the electric butterfly valve, recording whether the feedback value of the on-site motor current reaches the preset value standard, after reaching the preset value, the flow direction of the automatic water production in the pipeline is: liquid flows from the water inlet pipeline into each water pump, and then enters the outlet pipeline through the respective matching electric butterfly valves and check valves.

[0014] The beneficial effect of the present invention is that it can remotely control automatic pre-water filling and automatic exhaust operations before the water pump is started, and monitor the operating status of the water pump system at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the working principle of the automatic pre-water injection pipeline system of the present invention; Figure 2 It is a structural schematic diagram of the automatic pre-water injection pipeline system of the present invention; Figure 3 It is a schematic diagram of the principle of the remote control method of the automatic pre-injection water pipeline system of the present invention; In the figure, 1, water pump No. 1, 2, water pump No. 2, 3, water pump No. 3, 4, water pump No. 4, 5, water pump No. 5, 6, water pump No. 6, 7, motor, 8, electromagnetic flowmeter, 9, water inlet pipeline, 10, pre-filling pipeline, 11, water tank, 12, electric butterfly valve, 13, first electric ball valve, 14, second electric ball valve, 15, intelligent pressure switch, 16, check valve, 17, water outlet pipeline, 18, exhaust pipeline, 19, manual butterfly valve, 20, user. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1-2As shown, a mine water pump automatic pre-injection pipeline system includes: a water pool 11; a water inlet pipeline 9, one end of which is connected to the water pool; a water pump 3, one end of which is connected to the other end of the water inlet pipeline; a motor 7, which is electrically connected to the water pump; a water outlet pipeline 17, which is connected to the other end of the water pump; an electric butterfly valve 12, which is connected to the water outlet pipeline; a check valve 16, which is connected to the water outlet pipeline and is connected to the water outlet end of the electric butterfly valve; an exhaust Pipeline 18, the exhaust pipeline is connected between the other end of the water pump and the water inlet end of the electric butterfly valve; the second electric ball valve 14, the electric ball valve is connected to the exhaust pipeline; the intelligent pressure switch 15, the intelligent pressure switch is connected to the exhaust pipeline; the pre-water injection pipeline 10, one end of the pre-water injection pipeline is connected to the water inlet pipeline between the water tank and the water pump, and the other end is connected to the water outlet pipeline at the water outlet end of the check valve; the distribution room, the distribution room is connected to the motor, the electric butterfly valve and the second electric ball valve signal.

[0018] Specifically, there can be multiple water pumps, for example six, respectively referred to as water pump No. 1 1, water pump No. 2 2, water pump No. 3 3, water pump No. 4 4, water pump No. 5 5 and water pump No. 6 6. The outlet pipeline of water pump No. 1 1 is connected to the outlet pipeline of water pump No. 2 2, and they are merged and connected to form a joint pipeline. The outlet pipeline of water pump No. 3 3 is connected to the outlet pipeline of water pump No. 4 4, and they are merged and connected to form a joint pipeline, and a manual butterfly valve is connected to the joint pipeline. The outlet pipeline of water pump No. 5 5 is connected to the outlet pipeline of water pump No. 6 6, and they are merged and connected to form a joint pipeline. The six water pumps and their respective supporting pipeline systems provide power for water circulation. Manual butterfly valves 19 are respectively provided on the outlet pipelines of water pump No. 3 3, water pump No. 4 4, water pump No. 5 5 and water pump No. 6 6. User 20 is an operation terminal, which is connected to the signal of the distribution room. And the electric butterfly valve, the first electric ball valve, the second electric ball valve, and the intelligent pressure switch can be operated and controlled at the user's location A first electric ball valve 13 is provided at one end of the pre-injection pipeline. If there are multiple water pumps, there are multiple corresponding first electric ball valves. The outer diameter of the pipeline of the first electric ball valve is DN50, and the outer diameter of the pipeline of the second electric ball valve is DN25.

[0019] A remote control method for an automatic pre-injection water pipeline system of a mine water pump comprises: firstly, remote automatic pre-injection of water, secondly, remote automatic exhaustion, and finally, remote automatic water production.

[0020] like Figure 3As shown, the remote automatic pre-injection control steps are: remotely open the first electric ball valve 13 and the second electric ball valve 14 to determine whether the valve is opened normally. If an opening failure occurs, it is analyzed that the electric ball valve is damaged or the circuit is faulty: if the valve is damaged, the manual valve is replaced; if the circuit fails, it is necessary to check whether the control box signal is given to the electric actuator of the valve. If it is a circuit failure, the manual valve is temporarily replaced. After the system operates normally, the flow direction of the automatic pre-injection in the pipeline is: the liquid flows from the outlet pipeline 17 through the branch pipeline of the pre-injection pipeline 10 back to the inlet pipeline 9.

[0021] like Figure 3 As shown, the remote automatic exhaust control steps are: remotely open the second electric ball valve 14, determine whether the pressure feedback of the intelligent pressure switch 15 reaches the preset value, if not, check whether the electric ball valve is damaged or the circuit is faulty: if the valve is damaged, replace the manual valve; if the circuit is faulty, check whether the control box signal is given to the electric actuator of the valve. If it is a circuit fault, temporarily replace the manual valve. After the system operates normally, the direction of the automatic exhaust water flow in the pipeline is: gas and liquid enter from the water outlet pipeline and then flow out from the exhaust pipeline. After detecting the water flow pressure, the intelligent pressure switch 15 remotely closes the second electric ball valve 14 and the first electric ball valve 13.

[0022] like Figure 3 As shown, the remote automatic water production control step is: after the remote automatic pre-injection control step and the remote automatic exhaust control step are completed, the motor 7 is remotely controlled by the frequency converter in the power distribution room to start, open the electric butterfly valve 12, and record whether the feedback value of the on-site motor current reaches the preset value standard. If it does not reach the preset value standard, it is necessary to determine whether the electric butterfly valve 12 has mechanical damage and circuit failure. If the mechanical structure is damaged or the circuit fails, it needs to be replaced with a manual butterfly valve. The flow direction of automatic water production in the pipeline is: the liquid flows from the water inlet pipeline 9 into the water pump 1-6, and then passes through the electric butterfly valve 12 and the check valve 16 into the water outlet pipeline 17.

Claims

1. A mine water pump automatic pre-injection pipeline system, characterized by: comprising: a water tank (11); a water inlet pipeline (9), one end of which is connected to the water tank; a water pump (3), one end of which is connected to the other end of the water inlet pipeline; a motor (7), the motor being electrically connected to the water pump; a water outlet pipeline (17), the water outlet pipeline being connected to the other end of the water pump; an electric butterfly valve (12), the electric butterfly valve being connected to the water outlet pipeline; a check valve (16), the check valve being connected to the water outlet pipeline and being connected to the water outlet end of the electric butterfly valve; an exhaust pipeline (18), the The exhaust pipeline is connected between the other end of the water pump and the water inlet end of the electric butterfly valve; a second electric ball valve (14), the electric ball valve is connected to the exhaust pipeline; an intelligent pressure switch (15), the intelligent pressure switch is connected to the exhaust pipeline; a pre-injection pipeline (10), one end of the pre-injection pipeline is connected to the water inlet pipeline between the water tank and the water pump, and the other end is connected to the water outlet pipeline of the water outlet end of the check valve; a power distribution room, the power distribution room is connected to the motor, the electric butterfly valve and the second electric ball valve signal.

2. The automatic pre-injection pipeline system for a mine water pump according to claim 1, characterized in that: The water outlet pipeline is connected to an electromagnetic flow meter (8) close to the other end of the pre-injection water pipeline.

3. The automatic pre-injection pipeline system for a mine water pump according to claim 1, characterized in that: A first electric ball valve (13) is provided on one end of the pre-injection pipeline.

4. The automatic pre-injection pipeline system for a mine water pump as claimed in claim 3 is characterized by: The power distribution room is signal-connected to the first electric ball valve.

5. The automatic pre-injection pipeline system for a mine water pump according to claim 1, characterized in that: The water pumps are grouped in pairs, with a total of six. The water outlet pipelines of the two water pumps in each group are merged and connected to form a joint pipeline.

6. The automatic pre-injection pipeline system for a mine water pump as claimed in claim 5, characterized in that: One of them A manual butterfly valve (19) is connected to the joint pipeline.

7. The automatic pre-injection pipeline system for a mine water pump as claimed in claim 6, characterized in that: Manual butterfly valves (19) are connected to the water outlet pipes corresponding to the other two combined pipes.

8. A remote control method for a mine water pump automatic pre-injection pipeline system as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Remote automatic pre-injection: the first electric ball valve (13) and the second electric ball valve (14) are remotely opened through the power distribution room. After the system is running normally, the flow direction of the automatic pre-injection in the pipeline is: the liquid flows from the outlet pipeline (17) through the branch pipeline of the pre-injection pipeline (10) to the water inlet pipeline (9); Remote automatic exhaust: the second electric ball valve is remotely opened to determine whether the pressure feedback of the intelligent pressure switch (15) reaches a preset value. After reaching the preset value, the automatic exhaust water flow direction in the pipeline is: gas and liquid enter from the outlet pipeline and then flow out from the exhaust pipeline. After the intelligent pressure switch detects the water flow pressure, the second electric ball valve and the first electric ball valve are remotely closed; Remote automatic water production: the motor (7) is remotely controlled by the power distribution room to start, open the electric butterfly valve (12), record whether the feedback value of the on-site motor current reaches the preset value standard, and after reaching the preset value, the flow direction of the automatic water production in the pipeline is: the liquid flows from the water inlet pipeline into each water pump, and then enters the water outlet pipeline through the respective matching electric butterfly valves and check valves (16).

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