Circulating cooling device of underground coal mine high-pressure nitrogen making machine

Abstract

The utility model provides a circulating cooling device for an underground high-pressure nitrogen making machine of a coal mine, which relates to the technical field of underground operation of the coal mine and comprises the underground high-pressure nitrogen making machine, a water suction tank, a cooling water tank and a high-pressure refrigeration water pipe, circulating water is arranged in the water suction tank, and a circulating water pump is placed in the circulating water. A high-pressure S-shaped cooling pipe is arranged in the cooling water tank, and the input end and the output end of the high-pressure S-shaped cooling pipe are both connected with a high-pressure refrigeration water pipe. According to the underground high-pressure nitrogen making machine, low-pressure circulating water is conveyed into the underground high-pressure nitrogen making machine through the circulating water pump, hot water flowing out after the underground high-pressure nitrogen making machine is cooled enters the cooling water tank, the hot water is cooled through the high-pressure S-shaped cooling pipe in the cooling water tank, and then the hot water flows into the water suction tank; the water inlet end and the water outlet end of the high-pressure snakelike cooling pipe are connected with a high-pressure refrigeration water pipe in an underground coal mine respectively, cold water in the high-pressure refrigeration water pipe flows through the high-pressure snakelike cooling pipe to achieve heat exchange, and therefore the purpose of cooling is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coal mine operation, especially relates to a coal mine high pressure nitrogen making machine circulating cooling temperature reducing device. BACKGROUND

[0002] At present, the high pressure nitrogen making machine of 2.0-2.4MPa, 900-1500m3 / h (standard condition) flow is matched for the pneumatic directional drilling technology of soft coal drilling, the nitrogen making machine adopts water cooling mode for cooling during operation, needs to provide about 30m3 / h cooling water in the well, and the cooling water pressure should not be greater than 1MPa;

[0003] For many underground coal mines, the water area is more, and the water consumption is large, which can cause the water shortage of working face or affect the water pressure, and the direct discharge of clean water into the water warehouse after cooling also causes great waste, for some underground coal mines with 800-1000m well depth, the ground temperature is high, and high pressure cold water is transported for underground cooling, the water pressure in the water pipe is high, reaches 6-10MPa, the nitrogen making machine cannot be directly connected with the high pressure refrigeration water pipe, if the pressure is reduced and then connected, the water flowing out of the water outlet of the nitrogen making machine cannot enter the high pressure refrigeration water pipe, and a certain influence is caused to the circulating refrigeration system pipeline, therefore, the utility model provides a coal mine high pressure nitrogen making machine circulating cooling temperature reducing device to solve the problems in the prior art. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the utility model provides a coal mine high pressure nitrogen making machine circulating cooling temperature reducing device, the coal mine high pressure nitrogen making machine circulating cooling temperature reducing device cools and temperature reduce the circulating water of the high pressure nitrogen making machine in the well by the cold water in the existing high pressure refrigeration water pipe, solves the problem that the cooler of the nitrogen making machine cannot be cooled by high pressure water, and avoids the waste of water resources.

[0005] In order to realize the purpose of the utility model, the utility model realizes the following technical scheme: a coal mine high pressure nitrogen making machine circulating cooling temperature reducing device, including the underground high pressure nitrogen making machine, the water suction tank, the cooling water tank and the high pressure refrigeration water pipe, the inside of the water suction tank is equipped with circulating water, and the circulating water pump is placed in the circulating water, the inside of the cooling water tank is equipped with the high pressure coiled pipe, and the input end and the output end of the high pressure coiled pipe are connected with the high pressure refrigeration water pipe, and the lower end between the water suction tank and the cooling water tank is communicated;

[0006] The output end of the circulating water pump and the underground high pressure nitrogen making machine are connected with the nitrogen making machine water inlet pipe, and the water outlet of the underground high pressure nitrogen making machine and the cooling water tank are connected with the nitrogen making machine water outlet pipe.

[0007] Further improvement lies in that the input end of the high-pressure serpentine cooling pipe is connected with a high-pressure cooling water inlet pipe, and the output end of the high-pressure serpentine cooling pipe is connected with a high-pressure cooling water outlet pipe, and the upper ends of the high-pressure cooling water inlet pipe and the high-pressure cooling water outlet pipe are connected with a high-pressure refrigeration water pipe.

[0008] Further improvement lies in that a water inlet stop valve is arranged on the high-pressure cooling water inlet pipe, a water outlet stop valve is arranged on the high-pressure cooling water outlet pipe, and an adjusting valve is arranged on the high-pressure refrigeration water pipe at a position between the high-pressure cooling water inlet pipe and the high-pressure cooling water outlet pipe.

[0009] Further improvement lies in that the high-pressure serpentine cooling pipe inside the cooling water tank is provided with one or two groups.

[0010] Further improvement lies in that the high-pressure serpentine cooling pipe is a copper pipe, and the inner diameter of the copper pipe is 20-30 mm.

[0011] Further improvement lies in that the lower ends between the water suction tank and the cooling water tank are communicated through a temperature insulation pipeline, and the outer side of the temperature insulation pipeline is covered with a temperature insulation layer.

[0012] The utility model discloses the beneficial effects are:

[0013] 1, the utility model discloses a circulating water pump is transported low pressure circulating water into the downhole high pressure nitrogen making machine, and the hot water that flows out after the downhole high pressure nitrogen making machine is cooled down is sent into the cooling water tank, and the hot water is cooled down after being handled through the high-pressure serpentine cooling pipe in the cooling water tank and then flows into the water suction tank, and the water inlet end and the water outlet end of the high-pressure serpentine cooling pipe are connected with the high-pressure refrigeration water pipe under the coal mine, and the cold water in the high-pressure refrigeration water pipe realizes heat exchange through the high-pressure serpentine cooling pipe, thereby achieving the cooling purpose, and above all, the circulating water of the downhole high pressure nitrogen making machine is cooled down by using the cold water in the existing high-pressure refrigeration water pipe, the problem that the nitrogen making machine cooler cannot be cooled by high pressure water is solved, and water resource waste is avoided.

[0014] 2, the utility model discloses that the downhole high pressure nitrogen making machine is cooled through the circulating water pump, and the water pump controllable pressure is low, and the cooling equipment in the nitrogen making machine is protected fundamentally, and through the circulation of circulating water, the problem that the cooling device in the nitrogen making machine is scaled is avoided to a great extent, and the high-pressure serpentine cooling pipe is a copper pipe, is high pressure resistant, and the pressure provided by the high-pressure refrigeration water does not cause damage to the water pipe, is more durable, and is convenient to replace and maintain. DRAWINGS

[0015] Figure 1 It is the front view of the utility model.

[0016] Wherein: 1, downhole high pressure nitrogen making machine; 2, water suction tank; 3, cooling water tank; 4, high pressure refrigeration water pipe; 5, circulating water pump; 6, high pressure serpentine cooling pipe; 7, nitrogen making machine water inlet pipe; 8, nitrogen making machine water outlet pipe; 9, high pressure cooling water inlet pipe; 10, high pressure cooling water outlet pipe; 11, water inlet stop valve; 12, water outlet stop valve; 13, regulating valve; 14, temperature insulation pipeline. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the utility model, the utility model will be further described in the following combined with examples, and the examples are only used to explain the utility model and do not constitute the limitation of the protection scope of the utility model.

[0018] Example one

[0019] According to Figure 1 As shown in the figure, the embodiment proposes a kind of coal mine downhole high pressure nitrogen making machine circulating cooling cooling device, including downhole high pressure nitrogen making machine 1, water suction tank 2, cooling water tank 3 and high pressure refrigeration water pipe 4, the inside of water suction tank 2 is equipped with circulating water, and circulating water is placed with circulating water pump 5, the inside of cooling water tank 3 is equipped with high pressure serpentine cooling pipe 6, and the input end and output end of high pressure serpentine cooling pipe are all connected high pressure refrigeration water pipe 4, the lower end of communication between water suction tank 2 and cooling water tank 3;

[0020] The output end of circulating water pump 5 and downhole high pressure nitrogen making machine 1 are connected with nitrogen making machine water inlet pipe 7, and the water outlet of downhole high pressure nitrogen making machine 1 and cooling water tank 3 are connected with nitrogen making machine water outlet pipe 8.When downhole high pressure nitrogen making machine 1 is ready to run, start circulating water pump 5, circulating water in water suction tank 2 enters nitrogen making machine along nitrogen making machine water inlet pipe 7, and hot water is generated after cooling equipment, and enters cooling water tank 3 along nitrogen making machine water outlet pipe 8. Open the water inlet stop valve 11 of high pressure serpentine cooling pipe 6, slowly close or partially close the regulating valve 13 on high pressure refrigeration water pipe 4, high pressure water in high pressure refrigeration water pipe 4 enters high pressure serpentine cooling pipe 6, cold water in high pressure serpentine cooling pipe 6 exchanges heat with hot water in cooling water tank 3, realizes cooling, and high pressure water in high pressure serpentine cooling pipe 6 enters high pressure refrigeration water pipe 4 again, to realize nitrogen making machine cooling water circulation and high pressure water cooling, avoid water resource waste.

[0021] The input end of the high-pressure serpentine cooling pipe 6 is connected with a high-pressure cooling water inlet pipe 9, and the output end of the high-pressure serpentine cooling pipe 6 is connected with a high-pressure cooling water outlet pipe 10, and the upper ends of the high-pressure cooling water inlet pipe 9 and the high-pressure cooling water outlet pipe 10 are connected with the high-pressure refrigeration water pipe 4. The high-pressure cooling water inlet pipe 9 is provided with a water inlet stop valve 11, the high-pressure cooling water outlet pipe 10 is provided with a water outlet stop valve 12, and the high-pressure refrigeration water pipe 4 between the high-pressure cooling water inlet pipe 9 and the high-pressure cooling water outlet pipe 10 is provided with an adjusting valve 13. When the downhole high-pressure nitrogen making machine 1 is stopped, the circulating water pump 5 is closed, the adjusting valve 13 on the high-pressure refrigeration water pipe 4 is opened, the water inlet stop valve 11 on the high-pressure cooling water inlet pipe 9 and the water outlet stop valve 12 on the high-pressure cooling water outlet pipe 10 are closed, and the high-pressure water in the high-pressure refrigeration water pipe 4 directly flows along the pipeline without entering the high-pressure serpentine cooling pipe 6.

[0022] Embodiment two

[0023] According to Figure 1 As shown in the figure, the embodiment provides a circulating cooling and cooling device for a downhole high-pressure nitrogen making machine, which comprises a downhole high-pressure nitrogen making machine 1, a water suction tank 2, a cooling water tank 3 and a high-pressure refrigeration water pipe 4. The inside of the water suction tank 2 is provided with circulating water, and the circulating water is provided with a circulating water pump 5. The inside of the cooling water tank 3 is provided with a high-pressure serpentine cooling pipe 6, and the input end and the output end of the high-pressure serpentine cooling pipe are connected with the high-pressure refrigeration water pipe 4. The lower end between the water suction tank 2 and the cooling water tank 3 is communicated.

[0024] The output end of the circulating water pump 5 is connected with a nitrogen making machine water inlet pipe 7 between the downhole high-pressure nitrogen making machine 1, and the water outlet of the downhole high-pressure nitrogen making machine 1 is connected with a nitrogen making machine water outlet pipe 8 between the cooling water tank 3. When the downhole high-pressure nitrogen making machine 1 is ready to run, the circulating water pump 5 is started, the circulating water in the water suction tank 2 enters the nitrogen making machine along the nitrogen making machine water inlet pipe 7 to cool the equipment, and then the hot water generated after cooling enters the cooling water tank 3 along the nitrogen making machine water outlet pipe 8. The water inlet stop valve 11 of the high-pressure serpentine cooling pipe 6 is opened, the adjusting valve 13 on the high-pressure refrigeration water pipe 4 is slowly closed or partially closed, the high-pressure water in the high-pressure refrigeration water pipe 4 enters the high-pressure serpentine cooling pipe 6, the cold water in the high-pressure serpentine cooling pipe 6 exchanges heat with the hot water in the cooling water tank 3 to achieve cooling and cooling, and the high-pressure water in the high-pressure serpentine cooling pipe 6 enters the high-pressure refrigeration water pipe 4 again, so as to realize the cooling water circulation of the nitrogen making machine and the cooling and cooling of the high-pressure water, and avoid waste of water resources.

[0025] The high-pressure serpentine cooling pipe 6 in the cooling water tank 3 is provided with one group or two groups. According to the diameter size and pipeline flow requirement, one group or two groups can be set. The high-pressure serpentine cooling pipe 6 is a copper pipe, and the inner diameter of the copper pipe is 20-30 mm. The high-pressure serpentine cooling pipe 6 is a copper pipe, which is resistant to high pressure, and the high-pressure refrigeration water provides pressure without damaging the water pipe, is more durable, and is convenient to replace and maintain.

[0026] The lower end between the water suction tank 2 and the cooling water tank 3 is communicated through a temperature insulation pipeline 14, and the outer side of the temperature insulation pipeline 14 is covered with a temperature insulation layer.

[0027] The circulating cooling and temperature reducing device of the coal mine underground high-pressure nitrogen making machine utilizes the circulating water pump 5 to send the low-pressure circulating water into the coal mine underground high-pressure nitrogen making machine 1, and the hot water flowing out after the coal mine underground high-pressure nitrogen making machine 1 is cooled enters the cooling water tank 3, and the hot water is cooled and treated through the high-pressure serpentine cooling pipe 6 in the cooling water tank 3, and then flows into the water suction tank 2, the water inlet end and the water outlet end of the high-pressure serpentine cooling pipe 6 are connected with the coal mine underground high-pressure refrigeration water pipe 4, and the cold water in the high-pressure refrigeration water pipe 4 flows through the high-pressure serpentine cooling pipe 6 to realize heat exchange, so that the cooling purpose is achieved, and the circulating water of the coal mine underground high-pressure nitrogen making machine 1 is cooled by the cold water in the existing high-pressure refrigeration water pipe 4, the problem that the nitrogen making machine cooler cannot be cooled by high-pressure water is solved, and water resource waste is avoided.

[0028] The basic principle, main features and advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and the utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mine underground high-pressure nitrogen making machine circulating cooling cooling device, comprising a coal mine underground high-pressure nitrogen making machine (1), a water suction tank (2), a cooling water tank (3) and a high-pressure refrigeration water pipe (4), characterized in that: The inside of the water suction tank (2) is provided with circulating water, and a circulating water pump (5) is placed in the circulating water, the inside of the cooling water tank (3) is provided with a high-pressure serpentine cooling pipe (6), and the input end and the output end of the high-pressure serpentine cooling pipe are connected with a high-pressure refrigeration water pipe (4), and the lower end between the water suction tank (2) and the cooling water tank (3) is communicated; The output end of the circulating water pump (5) is connected with a nitrogen generator water inlet pipe (7) between the downhole high-pressure nitrogen generator (1), and the water outlet of the downhole high-pressure nitrogen generator (1) is connected with a nitrogen generator water outlet pipe (8) between the cooling water tank (3).

2. The circulating cooling device for the high-pressure nitrogen generator in the coal mine according to claim 1, characterized in that: The input end of the high-pressure serpentine cooling pipe (6) is connected with a high-pressure cooling water inlet pipe (9), and the output end of the high-pressure serpentine cooling pipe (6) is connected with a high-pressure cooling water outlet pipe (10), and the upper end of the high-pressure cooling water inlet pipe (9) and the high-pressure cooling water outlet pipe (10) is connected with the high-pressure refrigeration water pipe (4).

3. The coal mine underground high-pressure nitrogen generator circulating cooling device according to claim 2, characterized in that: The high-pressure cooling water inlet pipe (9) is provided with a water inlet stop valve (11), the high-pressure cooling water outlet pipe (10) is provided with a water outlet stop valve (12), and the high-pressure refrigeration water pipe (4) between the high-pressure cooling water inlet pipe (9) and the high-pressure cooling water outlet pipe (10) is provided with an adjusting valve (13).

4. The coal mine underground high-pressure nitrogen generator circulating cooling device according to claim 1, characterized in that: The high-pressure serpentine cooling pipe (6) inside the cooling water tank (3) is provided with one or two groups.

5. The coal mine underground high-pressure nitrogen generator circulating cooling device according to claim 4, characterized in that: The high-pressure serpentine cooling pipe (6) is a copper pipe, and the inner diameter of the copper pipe is 20-30mm.

6. The coal mine underground high-pressure nitrogen generator circulating cooling device according to claim 1, characterized in that: The lower end between the water suction tank (2) and the cooling water tank (3) is communicated through a temperature insulation pipeline (14), and the outer side of the temperature insulation pipeline (14) is covered with a temperature insulation layer.

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