CN218467785U

CN218467785U - Circulating cooling water system for underground coal mine

Info

Publication number: CN218467785U
Application number: CN202222120224.9U
Authority: CN
Inventors: 黄安庭; 张一帆
Original assignee: Huating Coal Group Co Ltd
Current assignee: Huating Coal Group Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-02-10
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a colliery is recirculated cooling water system for pit, including setting up in first vapor separator, second vapor separator, circulating water pond and the well water supply pipe of gas drainage pump cooling tube one side, circulating water pond one side has set gradually drainage canal, cooling water pond and sedimentation tank, the natural water delivery pipe of mine is installed in the last suspension of sedimentation tank, cooling water pond and sedimentation tank communicate each other through the overflow mouth, are provided with plate-fin heat exchanger in the cooling water pond, and plate-fin heat exchanger forms the cooling circulation return circuit with first vapor separator, second vapor separator, circulating water pond. The utility model discloses set up sedimentation tank, cooling water pond and drainage channel outside colliery gas drainage chamber, installation plate-fin heat exchanger in the cooling water pond, the cooling water flows back to circulation pool after carrying out the heat exchange through plate-fin heat exchanger and natural water for gas drainage pump reuse to utilize the mine natural water guarantee of continuous to the cooling efficiency of gas drainage pump.

Description

Circulating cooling water system for underground coal mine

Technical Field

The utility model relates to a colliery is fixed main equipment circulating water cooling technical field in the pit, especially relates to a colliery is circulating cooling water system for in the pit.

Background

The large-scale fixed equipment adopting the water cooling mode for heat dissipation under the coal mine can generate high temperature during operation, and the equipment is cooled by adopting the circulating water cooling mode generally for saving water resources.

The cooling medium that current colliery gas drainage pump used is circulating water + reclaimed water supply (as shown in figure 2), and the effectual circulating water temperature of intaking of reducing gas drainage pump, be the prerequisite that keeps the operation of pump maximum efficiency, because of circulating pond volume undersize, the short cooling effect that leads to of circulation distance is poor, the cooling water is in the high temperature state for a long time, the evaporation capacity increases, influences the normal operating of gas drainage pump, equipment operating efficiency is low, lead to the gas drainage effect poor, not only increased power consumption, still have certain potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a to the colliery gas drainage pump in-service use condition, on original cooling system's basis, carry out the heat exchange through plate radiator and the natural water of mine with the water in the circulating water pond to reduce the temperature of circulating water, guarantee the safe operation of gas drainage pump, and the colliery that provides uses recirculated cooling water system in the pit.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a colliery is recirculated cooling water system for pit, is including setting up in first vapor separator, second vapor separator, circulating water pond and the well water supply pipe of gas drainage pump cooling tube one side, circulating water pond one side has set gradually drainage channel, cooling water pond and sedimentation tank, the natural water delivery pipe of mine is installed in the suspension on the sedimentation tank, cooling water pond and sedimentation tank communicate each other through the overflow mouth, be provided with plate-fin heat exchanger in the cooling water pond, plate-fin heat exchanger forms the cooling circulation return circuit with first vapor separator, second vapor separator, circulating water pond.

Preferably, a submersible pump is arranged in the circulating water tank, and the reclaimed water supply pipe and the submersible pump are communicated with one end of the water inlet of the cooling pipe through a tee joint.

Preferably, the first water-vapor separator and the second water-vapor separator are both connected with the water inlet end of the plate-fin heat exchanger through a heating medium water supply pipe.

Preferably, the water outlet end of the plate-fin heat exchanger is connected with a refrigerant return pipe, and the refrigerant return pipe is connected with a spray header suspended at the top of the circulating water tank.

Preferably, the outer wall of the upper part of the cooling water pool is connected with an overflow pipe, and the outer wall of the lower part of the cooling water pool is provided with a drain pipe.

Preferably, the overflow pipe and the drain pipe both extend to the top of the drain channel, and the drain pipe is provided with a stop valve.

The utility model has the advantages that:

the utility model discloses in, through set up the sedimentation tank outside colliery gas drainage chamber, cooling water pool and drainage channel, install plate-fin heat exchanger in cooling water pool, circulating water pump passes through pipeline pump with gas drainage pump exhaust cooling water and goes into plate-fin heat exchanger, the cooling water flows back to circulating water pool after carrying out the heat exchange with natural water through plate-fin heat exchanger, a reuse for gas drainage pump, natural water in the cooling water pool flows into the drainage channel through the pipeline of cooling water pool below after the heat exchange, finally arrange into shaft bottom sump, thereby utilize the mine natural water guarantee of continuous source to the cooling efficiency of gas drainage pump.

Drawings

FIG. 1 is a schematic view of an improved structure of a circulating cooling water system for an underground coal mine provided by the utility model;

FIG. 2 is a schematic diagram of a circulating cooling water system for underground coal mine in the prior art.

In the figure: the system comprises a first water-vapor separator 1, a second water-vapor separator 2, a circulating water tank 3, a reclaimed water supply pipe 4, a sedimentation tank 5, a cooling water tank 6, a drainage channel 7, an 8-plate fin heat exchanger, a heat medium water supply pipe 9, a refrigerant water return pipe 10, an overflow port 11, an overflow pipe 12, a mine natural water supply pipe 13 and a heat exchange water tank 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The existing circulating cooling water system for underground coal mines is shown in figure 2:

the gas extraction pump cooling system comprises a first water-vapor separator 1, a second water-vapor separator 2, a circulating water tank 3, a middle water supply pipe 4, a heat exchange water tank 14 and a plate-fin heat exchanger 8, wherein a heating medium circularly flows among the first water-vapor separator 1, the second water-vapor separator 2, the circulating water tank 3 and the plate-fin heat exchanger 8 to cool the gas extraction pump, the middle water supply pipe 4, the circulating water tank 3, the first water-vapor separator 1 and the second water-vapor separator 2 are used for separating water level cooling circulating water, the circulation water is in a high-temperature state for a long time due to the fact that the volume of the circulating water tank 3 is too small and the circulation distance is short, the cooling effect is poor, and the cooling water is in a high-temperature state for a long time, the evaporation amount is increased, and the normal operation of the gas extraction pump is influenced.

For this reason, the cooling system is modified as follows:

referring to fig. 1, the circulating cooling water system for the underground coal mine comprises a first water-vapor separator 1, a second water-vapor separator 2, a circulating water tank 3 and a middle water supply pipe 4 which are arranged on one side of a cooling pipe of a gas drainage pump, wherein a drainage channel 7, a cooling water tank 6 and a sedimentation tank 5 are sequentially arranged on one side of the circulating water tank 3, a natural mine water supply pipe 13 is mounted on the sedimentation tank 5 in a hanging manner, the cooling water tank 6 and the sedimentation tank 5 are mutually communicated through an overflow port 11, and a plate-fin heat exchanger 8 is arranged in the cooling water tank 6;

a submersible pump is arranged in the circulating water tank 3, and the reclaimed water supply pipe 4 and the submersible pump are communicated with one end of a water inlet of the cooling pipe through a tee joint.

The first water-vapor separator 1 and the second water-vapor separator 2 are both connected with the water inlet end of the plate-fin heat exchanger 8 through a heat medium water supply pipe 9, the water outlet end of the plate-fin heat exchanger 8 is connected with a refrigerant return pipe 10, and the refrigerant return pipe 10 is connected with a spray header suspended at the top of the circulating water tank 3, so that the plate-fin heat exchanger 8, the first water-vapor separator 1, the second water-vapor separator 2 and the circulating water tank 3 form a cooling circulating loop.

The outer wall of the upper part of the cooling water pool 6 is connected with an overflow pipe 12, and the outer wall of the lower part of the cooling water pool 6 is provided with a drain pipe.

The overflow pipe 12 and the drain pipe all extend to the drain ditch top, and install the stop valve on the drain pipe.

A first water-vapor separator 1 and a second water-vapor separator 2 are arranged in a coal mine gas drainage chamber, a cooling water tank 6 is arranged at a position 80m away from the gas drainage chamber, a plate heat exchanger is arranged in the cooling water tank 6, a circulating water pump pumps cooling water discharged by a gas drainage pump into a plate-fin heat exchanger 8 through a pipeline, and the cooling water exchanges heat with natural water through the plate-fin heat exchanger 8 and then flows into the circulating water tank 3 for repeated cooling and utilization of the gas drainage pump.

The cooling water pool 6 is poured by C30 concrete, natural mine water firstly enters the sedimentation pool 5 through a water pipe, impurities in the water and coal slime are filtered through the sedimentation pool 5, the filtered water enters the cooling water pool 6, the plate-fin heat exchanger 8 is installed in the cooling water pool 6, cooling water discharged by the gas drainage pump is pumped into the plate-fin heat exchanger 8 through a pipeline by the circulating water pump, the cooling water flows back to the circulating water pool 3 after exchanging heat with natural water through the plate-fin heat exchanger 8 and is used for recycling of the gas drainage pump, and the natural water in the cooling water pool 6 flows into the drainage channel through a pipeline below the cooling water pool 6 after exchanging heat and is finally drained into a shaft bottom sump.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a colliery is recirculating cooling water system for pit, is including setting up in first vapor separator (1), second vapor separator (2), circulation pond (3) and well water supply pipe (4) of gas drainage pump cooling tube one side, its characterized in that, circulation pond (3) one side has set gradually drainage canal (7), cooling water pond (6) and sedimentation tank (5), natural water delivery pipe (13) of mine are installed to suspension on sedimentation tank (5), cooling water pond (6) and sedimentation tank (5) communicate each other through overflow mouth (11), be provided with plate-fin heat exchanger (8) in cooling water pond (6), plate-fin heat exchanger (8) and first vapor separator (1), second vapor separator (2), circulation pond (3) form the cooling cycle return circuit.

2. The circulating cooling water system for the underground coal mine according to claim 1, wherein a submersible pump is arranged in the circulating water tank (3), and the reclaimed water supply pipe (4) and the submersible pump are communicated with one end of a water inlet of the cooling pipe through a tee joint.

3. The circulating cooling water system for the underground coal mine according to claim 1, wherein the first water-vapor separator (1) and the second water-vapor separator (2) are connected with the water inlet end of the plate-fin heat exchanger (8) through a heat medium water supply pipe (9).

4. The circulating cooling water system for the underground coal mine according to claim 1, wherein a coolant return pipe (10) is connected to a water outlet end of the plate-fin heat exchanger (8), and the coolant return pipe (10) is connected with a spray header suspended at the top of the circulating water tank (3).

5. The circulating cooling water system for the underground coal mine according to claim 1, wherein an overflow pipe (12) is connected to the outer wall of the upper part of the cooling water pool (6), and a drain pipe is installed on the outer wall of the lower part of the cooling water pool (6).

6. A circulating cooling water system used in the underground of a coal mine according to claim 5, characterized in that the overflow pipe (12) and the drain pipe both extend to the upper part of the drain channel, and a stop valve is arranged on the drain pipe.