A tunneling machine cooling system

Abstract

The utility model discloses a kind of tunneling machine cooling systems, including motor, first water inlet pipe and second water inlet pipe, the second water inlet pipe and the cooling water import of motor are jointly fixed intercommunication with second pressure filter assembly, and the cooling water export of motor is fixed intercommunication with fixed pipe. In the utility model, by the series cooling is changed into parallel independent cooling structure, so that motor and oil pump are cooled by independent water inlet pipeline respectively. Among them, motor cooling circuit is provided with second pressure filter assembly, to ensure that cooling water is clean;Oil pump cooling circuit uses first pressure filter assembly and second ball valve control, and is sent to spray assembly after cooling by multistage cooling unit. The design effectively shortens the cooling water circulation path, significantly improves the cooling efficiency of motor and oil pump, and improves the atomization effect of external spray, thereby ensuring the stable operation of the tunneling machine during roadway tunneling.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine technology, and in particular to a tunneling machine cooling system. Background Technology

[0002] To address the issue of high-temperature equipment failure caused by insufficient cooling system efficiency during tunnel excavation of the EBZ200 roadheader, existing technologies use a series connection for the cooling pipes of the oil pump and motor. This results in a long cooling water circulation path and low heat dissipation efficiency, affecting not only the equipment's cutting efficiency but also leading to poor external spray atomization. To overcome this technical bottleneck, this invention optimizes the cooling system structure, transforming the series cooling into a parallel independent cooling system. This significantly improves heat dissipation efficiency and external spray performance, thereby ensuring stable equipment operation and enhancing tunneling efficiency.

[0003] Therefore, a tunneling machine cooling system is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tunneling machine cooling system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a tunneling machine cooling system, including a motor, a first water inlet pipe and a second water inlet pipe, wherein the second water inlet pipe and the cooling water inlet of the motor are fixedly connected by a second pressure filter assembly, and the cooling water outlet of the motor is fixedly connected by a fixed pipe.

[0006] The first water inlet pipe is fixedly connected to the outlet end of a first pressure filter assembly, and the outlet end of the first pressure filter assembly is fixedly connected to a first ball valve and a second ball valve.

[0007] The outlet of the second ball valve is fixedly connected to a cooling unit, and the outlet of the cooling unit and the fixed pipe are both fixedly connected to a spray assembly.

[0008] Furthermore, the first pressure filtration assembly includes a second pressure gauge filter, which is fixedly connected to the second inlet pipe. The outlet of the second pressure gauge filter is fixedly connected to a long pipe, which is fixedly connected to the cooling water inlet of the motor. This structure ensures the cleanliness of the water in the motor cooling water circuit.

[0009] Furthermore, the first pressure filtration assembly includes a first pressure gauge filter, which is fixedly connected to the first inlet pipe. The outlet end of the first pressure gauge filter is fixedly connected to a pre-pressure gauge, which is fixedly connected to the first ball valve and the second ball valve. The pre-pressure gauge can monitor the inlet water pressure of the oil pump cooling water circuit in real time.

[0010] Furthermore, the cooling unit includes a pressure reducing valve, which is fixedly interconnected with a second ball valve. A post-pressure gauge is fixedly interconnected at the outlet of the pressure reducing valve, and a safety valve is fixedly interconnected at the outlet of the post-pressure gauge. Two plate coolers are connected in series at the outlet of the safety valve, and a serpentine tube cooler is fixedly interconnected at the outlet of a single plate cooler on the side away from the safety valve. The multi-stage cooling structure, through the combination of plate coolers and serpentine tube coolers, significantly improves heat exchange efficiency, while the configuration of the post-pressure gauge and safety valve ensures that the system operates within a safe pressure range.

[0011] Furthermore, the spray assembly includes a first external spray pipe, which is fixedly connected to a serpentine tube cooler. Multiple nozzles are fixedly connected to the outer surface of the first external spray pipe. The external spray pipe directly delivers water that has undergone deep cooling, enabling the nozzles to form a finer water mist.

[0012] Furthermore, a second outer spray pipe is fixedly connected to the outer surface of the first outer spray pipe, and the second outer spray pipe is fixedly connected to the fixed pipe. Multiple nozzles are also fixedly connected to the outer surface of the second outer spray pipe. The outer spray pipe is connected to the motor cooling circuit to form an internal and external coordinated spray system.

[0013] The beneficial effects of this utility model are:

[0014] In use, this invention transforms the series cooling system into a parallel, independent cooling structure, allowing the motor and oil pump to be cooled separately through independent water inlet pipes. The motor cooling circuit is equipped with a second pressure filter to ensure the cleanliness of the cooling water; the oil pump cooling circuit uses a first pressure filter and a second ball valve for control, and the water is delivered to the spray unit after being cooled by a multi-stage cooling unit. This design effectively shortens the cooling water circulation path, significantly improves the cooling efficiency of the motor and oil pump, and enhances the atomization effect of the external spray, thereby ensuring the stable operation of the tunneling machine during tunnel excavation. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a system schematic diagram of the present invention.

[0017] The attached figures are labeled as follows:

[0018] 1. First water inlet pipe; 2. Second water inlet pipe; 3. Second pressure gauge filter; 4. Long pipe; 5. Fixed pipe; 6. Nozzle; 7. First external spray pipe; 8. Second external spray pipe; 9. Motor; 10. Serpentine tube cooler; 11. Plate cooler; 12. Safety valve; 13. Rear pressure gauge; 14. Pressure reducing valve; 15. Second ball valve; 16. First ball valve; 17. Pre-pressure gauge; 18. First pressure gauge filter. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1 As shown, a tunneling machine cooling system is disclosed, comprising a motor 9, a first water inlet pipe 1, and a second water inlet pipe 2. A second pressure filter assembly is fixedly connected to the cooling water inlet of the motor 9 via the second water inlet pipe 2. A fixed pipe 5 is fixedly connected to the cooling water outlet of the motor 9. The first pressure filter assembly includes a second pressure gauge filter 3, which is fixedly connected to the second water inlet pipe 2. A long pipe 4 is fixedly connected to the outlet of the second pressure gauge filter 3, and the long pipe 4 is fixedly connected to the cooling water inlet of the motor 9. The second pressure gauge filter 3 has a filtration accuracy of 50 μm and is equipped with a pressure gauge with a range of 0-4 MPa. The filter adopts a quick-release structure for easy maintenance and cleaning.

[0021] A first pressure filter assembly is fixedly connected to the outlet end of the first inlet pipe 1. A first ball valve 16 and a second ball valve 15 are also fixedly connected to the outlet end of the first pressure filter assembly. The first pressure filter assembly includes a first pressure gauge filter 18, which is fixedly connected to the first inlet pipe 1. A pre-pressure gauge 17 is fixedly connected to the outlet end of the first pressure gauge filter 18, and is also fixedly connected to the first ball valve 16 and the second ball valve 15. The first pressure gauge filter 18 has a filtration accuracy of 50μm and is equipped with a pressure gauge with a range of 0-10MPa. The filter adopts a quick-release structure for easy maintenance and cleaning. The pre-pressure gauge 17 is a shockproof pressure gauge.

[0022] The outlet of the second ball valve 15 is fixedly connected to a cooling unit. The cooling unit includes a pressure reducing valve 14, which is fixedly connected to the second ball valve 15. The outlet of the pressure reducing valve 14 is fixedly connected to a rear pressure gauge 13. The outlet of the rear pressure gauge 13 is fixedly connected to a safety valve 12. The outlet of the safety valve 12 is connected in series to two plate coolers 11. The outlet of a single plate cooler 11 on the side away from the safety valve 12 is fixedly connected to a serpentine tube cooler 10. The rear pressure gauge 13 is of the same specification as the front pressure gauge 17 and is used to monitor the inlet water pressure of the cooling unit.

[0023] A spray assembly is fixedly connected between the water outlet of the cooling unit and the fixed pipe 5. The spray assembly includes a first external spray pipe 7, which is fixedly connected to the serpentine tube cooler 10. Multiple nozzles 6 are fixedly connected to the outer surface of the first external spray pipe 7. A second external spray pipe 8 is fixedly connected to the outer surface of the first external spray pipe 7, which is fixedly connected to the fixed pipe 5. Multiple nozzles 6 are also fixedly connected to the outer surface of the second external spray pipe 8. The nozzles 6 are ceramic nozzles with an orifice diameter of 1.2 mm, which can produce atomized particles of 20-50 μm.

[0024] Working principle: Cooling water is split from the main inlet into the first inlet pipe 1 and the second inlet pipe 2, forming a parallel independent cooling system.

[0025] Motor 9 cooling circuit: Cooling water enters the second pressure filter assembly through the second inlet pipe 2 for filtration, and then is delivered to the cooling water inlet of motor 9 to cool motor 9. The cooled water is then delivered from the outlet of motor 9 through the fixed pipe 5 to the spray assembly, and finally forms an external spray through the nozzle 6.

[0026] Oil pump cooling circuit: Cooling water enters the first pressure filter assembly through the first inlet pipe 1 for filtration, and then the flow direction is controlled by the first ball valve 16 and the second ball valve 15. After the water flows through the cooling unit (including pressure reducing valve 14, post-pressure gauge 13, safety valve 12, plate cooler 11 and serpentine tube cooler 10) for multi-stage cooling, it enters the spray assembly and forms atomized cooling through the nozzles 6 of the first external spray pipe 7 and the second external spray pipe 8.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A tunneling machine cooling system, comprising a motor (9), a first water inlet pipe (1), and a second water inlet pipe (2), characterized in that: The second water inlet pipe (2) and the cooling water inlet of the motor (9) are connected by a second pressure filter assembly, and the cooling water outlet of the motor (9) is connected by a fixed pipe (5). The first water inlet pipe (1) is fixedly connected to the outlet end of the first pressure filter assembly, and the outlet end of the first pressure filter assembly is fixedly connected to the first ball valve (16) and the second ball valve (15). The outlet of the second ball valve (15) is fixedly connected to a cooling unit, and the outlet of the cooling unit and the fixed pipe (5) are both fixedly connected to a spray assembly.

2. The tunneling machine cooling system according to claim 1, characterized in that: The first pressure filtration assembly includes a second pressure gauge filter (3), and the second pressure gauge filter (3) is fixedly connected to the second water inlet pipe (2). The outlet end of the second pressure gauge filter (3) is fixedly connected to a long pipe (4), and the long pipe (4) is fixedly connected to the cooling water inlet of the motor (9).

3. The tunneling machine cooling system according to claim 1, characterized in that: The first pressure filtration assembly includes a first pressure gauge filter (18), and the first pressure gauge filter (18) is fixedly connected to the first water inlet pipe (1). The outlet end of the first pressure gauge filter (18) is fixedly connected to a pre-pressure gauge (17), and the pre-pressure gauge (17) is fixedly connected to the first ball valve (16) and the second ball valve (15).

4. The tunneling machine cooling system according to claim 1, characterized in that: The cooling unit includes a pressure reducing valve (14), and the pressure reducing valve (14) is fixedly connected to the second ball valve (15). The outlet end of the pressure reducing valve (14) is fixedly connected to a rear pressure gauge (13). The outlet end of the rear pressure gauge (13) is fixedly connected to a safety valve (12). The outlet end of the safety valve (12) is connected in series with two plate coolers (11). The outlet end of a single plate cooler (11) on the side away from the safety valve (12) is fixedly connected to a serpentine tube cooler (10).

5. A tunneling machine cooling system according to claim 4, characterized in that: The spray assembly includes a first external spray pipe (7), and the first external spray pipe (7) is fixedly connected to the serpentine tube cooler (10). Multiple nozzles (6) are fixedly connected to the outer surface of the first external spray pipe (7).

6. A tunneling machine cooling system according to claim 5, characterized in that: The outer surface of the first outer spray pipe (7) is fixedly connected to the second outer spray pipe (8), and the second outer spray pipe (8) is fixedly connected to the fixed pipe (5). The outer surface of the second outer spray pipe (8) is also fixedly connected to multiple nozzles (6).

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