Preheating system for diesel engine of diesel locomotive

Abstract

The utility model provides a diesel engine preheating system of a diesel locomotive, and relates to the technical field of diesel engine circulating water preheating systems, the diesel engine preheating system of the diesel locomotive comprises a pipeline heater and a control device, the pipeline heater is connected with a water inlet pipe and a water outlet pipe, the water inlet pipe is connected with a water storage tank; a water pump is arranged on the water inlet pipe, and the water outlet pipe is connected with equipment; the pipeline heater and the water pump are electrically connected with the control device; the diesel engine circulating water is preheated through the pipeline heater, compared with a traditional boiler preheating mode, the heating efficiency is high, the preheating effect is remarkable, the pipeline heater adopts electric heating and is greener and more environmentally friendly, meanwhile, the mains supply cost is low, the system does not need to input too much manpower, and the preheating cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine circulating water preheating systems, and particularly relates to a diesel engine preheating system for diesel locomotives. Background Art

[0002] Railways are important infrastructure of the national economy. The linkage, continuity and social public welfare of railway transportation production determine that railway transportation must be unobstructed and safe. In terms of energy transportation and locomotive traction, diesel locomotives play an important role.

[0003] The "heart" of a diesel locomotive is the diesel engine. When starting or stopping, there are certain requirements for the temperatures of the engine oil, diesel fuel and cooling water of the diesel engine. In the operation and maintenance of diesel locomotives, it is stipulated that when the oil and water temperatures are lower than 20°C, the diesel engine is not allowed to start; when the oil and water temperatures are lower than 40°C, the diesel engine is not allowed to increase the load; when the diesel engine stops for heat preservation in winter, the oil and water temperatures shall not be lower than 20°C. With the development of science and technology, the problem of low-temperature use of diesel fuel and engine oil has been solved, but the low-temperature use of cooling water has not been solved. Low temperature will cause the sealing components of the cooling water pipeline to shrink and embrittle easily, resulting in pipeline leakage and affecting the operation of the diesel engine. Therefore, it is necessary to "heat up" the cooling water when the internal combustion engine stays.

[0004] The current preheating solution for internal combustion engines is to preheat through an auxiliary diesel engine and manually heat the boiler. This method not only has low heating efficiency and poor preheating effect, but also consumes a large amount of fuel, generates polluting gases, causes environmental pollution. At the same time, the consumption of too much fuel and the investment of too much manpower will increase the preheating cost. Content of the Utility Model

[0005] The purpose of the utility model is to provide a diesel engine preheating system for diesel locomotives, so as to solve the technical problems of poor preheating effect, environmental unfriendliness and high cost existing in the prior art of preheating the circulating water of internal combustion engines by using a boiler; the many technical effects that can be produced by the preferred technical solutions provided by the utility model; see the following for details.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A diesel engine preheating system for diesel locomotives provided by the utility model includes a pipeline heater and a control device, wherein: the pipeline heater is connected with a water inlet pipe and a water outlet pipe. The water inlet pipe is connected to a water storage tank, and a water pump is arranged on the water inlet pipe. The water outlet pipe is connected to the equipment; both the pipeline heater and the water pump are electrically connected to the control device.

[0008] Preferably, the control device includes an electric control box, wherein: the pipeline heater is electrically connected to the electric control box; the water pump is electrically connected to the electric control box.

[0009] Preferably, the control device includes a remote monitoring control terminal, a wireless communication module is arranged in the electric control box, and the electric control box is in communication connection with the remote monitoring control terminal through the wireless communication module.

[0010] Preferably, the pipeline heater is provided with a first temperature controller, a second temperature controller and a third temperature controller, wherein: the first temperature controller, the second temperature controller and the third temperature controller are all electrically connected to the electric control box; the first temperature controller can collect the inlet water temperature of the pipeline heater and feedback it to the electric control box; the second temperature controller can collect the outlet water temperature of the pipeline heater and feedback it to the electric control box; the third temperature controller can collect the cavity temperature of the pipeline heater and feedback it to the electric control box.

[0011] Preferably, the pipeline heater includes a housing, wherein: a heating cavity is arranged in the housing, and heating elements are arranged in the heating cavity; a water inlet communicated with the heating cavity is arranged on the housing, and the water inlet is connected with the water inlet pipe; a water outlet communicated with the heating cavity is arranged on the housing, and the water outlet is connected with the water outlet pipe.

[0012] Preferably, a plurality of flow guiding plates are arranged in the heating cavity, and all the flow guiding plates are alternately distributed left and right along the axial direction of the heating cavity in sequence to form a curved flow channel for circulating water to flow through.

[0013] Preferably, a sewage outlet communicated with the heating cavity is arranged on the housing; a sewage valve is arranged at the sewage outlet.

[0014] Preferably, an exhaust port communicated with the heating cavity is arranged on the housing; an exhaust valve is arranged at the exhaust port.

[0015] Preferably, a first stop valve is arranged on the water inlet pipe; a second stop valve is arranged on the water outlet pipe.

[0016] Preferably, the diesel engine preheating system of the diesel locomotive further includes a cabinet, and the pipeline heater, the electric control box and the water pump are all arranged in the cabinet.

[0017] The diesel engine preheating system of the diesel locomotive provided by the utility model has at least the following beneficial effects:

[0018] The diesel engine preheating system of the diesel locomotive includes a pipeline heater and a control device, and the pipeline heater is used for preheating circulating water.

[0019] The pipeline heater is connected with a water inlet pipe and a water outlet pipe. The water inlet pipe is connected to a water storage tank, and a water pump is arranged on the water inlet pipe. The water outlet pipe is connected to a device. The pipeline heater and the water pump are both electrically connected to the control device. During preheating, under the action of the water pump, the circulating water flows out of the water storage tank, enters the pipeline heater through the water inlet pipe. After the pipeline heater heats the circulating water, it flows out through the water outlet pipe and enters the device. During this process, the control device controls the operation of the pipeline heater and the water pump.

[0020] The utility model preheats the circulating water of the diesel engine through a pipeline heater. Compared with the traditional boiler preheating method, not only is the heating efficiency higher and the preheating effect is remarkable, but also the pipeline heater is electrically heated, which is more green and environmentally friendly. At the same time, the cost of commercial power is low, the system does not require too much manpower input, and the preheating cost is low. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is a schematic diagram of the communication connection between the electric control box and the remote monitoring control terminal of the present utility model;

[0024] Figure 3 is a schematic structural diagram of the pipeline heater of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the diesel engine preheating equipment of the diesel locomotive of the present utility model;

[0026] Figure 5 is an internal schematic diagram of the side view of the diesel engine preheating equipment of the diesel locomotive of the present utility model;

[0027] Figure 6 is a front view schematic diagram of the diesel engine preheating equipment of the diesel locomotive of the present utility model;

[0028] Figure 7 is a schematic diagram of the local control circuit of the present utility model.

[0029] Reference Signs

[0030] 1. Pipe heater; 11. First temperature controller; 12. Second temperature controller; 13. Third temperature controller; 14. Housing; 141. Water inlet; 142. Water outlet; 143. Drain port; 144. Exhaust port; 145. Drain valve; 146. Exhaust valve; 15. Heating chamber; 16. Heating element; 17. Deflector; 18. Junction box; 2. Control device; 21. Electric control box; 211. Wireless communication module; 212. Control panel; 22. Remote monitoring control terminal; 3. Water inlet pipe; 31. First stop valve; 4. Water outlet pipe; 41. Second stop valve; 5. Water pump; 6. Water storage tank; 7. Equipment; 8. Cabinet. Detailed implementation

[0031] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other implementation manners obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present utility model.

[0032] Embodiment 1:

[0033] The present utility model provides a preheating system for a diesel engine of an internal combustion locomotive. Referring to Figure 1 as shown, the preheating system for the diesel engine of the internal combustion locomotive includes a pipe heater 1 and a control device 2, and the pipe heater 1 is an electric heater.

[0034] The pipe heater 1 is connected with a water inlet pipe 3 and a water outlet pipe 4. The water inlet pipe 3 is connected to the water storage tank 6, a water pump 5 is arranged on the water inlet pipe 3, the water outlet pipe 4 is connected to the equipment 7, the equipment 7 is connected to the water storage tank 6, and the water storage tank 6, the water pump 5, the pipe heater 1 and the equipment 7 form a water circulation loop.

[0035] Both the pipe heater 1 and the water pump 5 are electrically connected to the control device 2.

[0036] During preheating, the control device 2 controls the water pump 5 to start, pressurize the circulating water. The circulating water flows out from the water storage tank 6, then enters the pipe heater 1 through the water inlet pipe 3. The pipe heater 1 heats the circulating water under the control of the control device 2. After heating is completed, the circulating water flows out from the water outlet pipe 4 and enters the equipment 7. Then, the circulating water in the equipment 7 flows back to the water storage tank 6.

[0037] In the above process, the pipe heater 1 is used to preheat the circulating water. Compared with the existing boiler preheating method, not only the heating efficiency is high and the preheating effect is remarkable, but also the pipe heater 1 is electrically heated, which is more green and environmentally friendly. At the same time, the cost of commercial power is low, the system does not require too much manpower input, and the preheating cost is low.

[0038] Example 2:

[0039] Example 2 is based on Example 1:

[0040] As shown in Figures 1-3 Figure, the control device 2 includes an electric control box 21. The pipeline heater 1 is provided with a junction box 18, and the junction box 18 is electrically connected to the electric control box 21; the water pump 5 is electrically connected to the electric control box 21.

[0041] The electric control box 21 is used for local control of the pipeline heater 1 and the water pump 5. It is provided with a control panel 212, and on the control panel 212, there are a power button, a circulation operation button, a circulation stop button, a constant temperature button, an emergency stop button, a low temperature alarm buzzer and a dry burning alarm buzzer.

[0042] The electric control box 21 is the local control part of the preheating system for the diesel engine of the diesel locomotive.

[0043] As an optional implementation manner, as shown in Figure 2 Figure, the control device 2 includes a remote monitoring control terminal 22. A wireless communication module 211 is arranged in the electric control box 21, and the electric control box 21 is communicatively connected to the remote monitoring control terminal 22 through the wireless communication module 211. The wireless communication module 211 adopts a wifi module.

[0044] Through the remote monitoring control terminal 22, the temperature of the circulating water can be detected in real time, and the water temperature can be remotely adjusted to realize the control of the overall system.

[0045] The schematic diagram of the local control circuit is as shown in Figure 7 Figure.

[0046] As an optional implementation manner, as shown in Figure 2 Figure, the pipeline heater 1 is provided with a first temperature controller 11, a second temperature controller 12 and a third temperature controller 13. The first temperature controller 11, the second temperature controller 12 and the third temperature controller 13 are all electrically connected to the electric control box 21.

[0047] The first temperature controller 11 can collect the inlet water temperature of the pipeline heater 1 and feed it back to the electric control box 21. The second temperature controller 12 can collect the outlet water temperature of the pipeline heater 1 and feed it back to the electric control box 21. The third temperature controller 13 can collect the cavity temperature of the pipeline heater 1 and feed it back to the electric control box 21.

[0048] The first temperature controller 11, the second temperature controller 12 and the third temperature controller 13 cooperate with each other to be able to realize functions such as circulating water temperature setting, low temperature protection and anti-dry burning, and cooperate with the electric control box 21 to be able to realize the automatic start and stop of the pipeline heater 1.

[0049] The first temperature controller 11, the second temperature controller 12, and the third temperature controller 13 adopt existing temperature controllers, with the model number E5CC-RX2ASM-802, and their digital displays are set on the control panel 212.

[0050] As an alternative implementation, as Figure 3 shown, the pipeline heater 1 includes a housing 14, and the housing wall of the housing 14 is provided with a heat insulation layer.

[0051] A heating cavity 15 is arranged inside the housing 14, a heating element 16 is arranged inside the heating cavity 15, the heating element 16 adopts an electric heating tube, and the wiring terminals of the motor heat pipe are located inside the junction box 18.

[0052] A water inlet 141 communicating with the heating cavity 15 is arranged on the housing 14, the water inlet 141 is connected to the water inlet pipe 3, a water outlet 142 communicating with the heating cavity 15 is arranged on the housing 14, and the water outlet 142 is connected to the water outlet pipe 4.

[0053] The temperature measurement points of the first temperature controller 11, the second temperature controller 12, and the third temperature controller 13 are respectively arranged on the water inlet 141, the water outlet 142, and the electric heating tube inside the junction box 18.

[0054] As an alternative implementation, as Figure 3 shown, a plurality of flow guide plates 17 are arranged inside the heating cavity 15, and all the flow guide plates 17 are alternately distributed left and right in sequence along the axial direction of the heating cavity 15 to form a curved flow path for the circulating water to flow through.

[0055] The heating section of the heating element 16 is arranged on the flow guide plate 17.

[0056] In this way, the flow guide plate 17 has at least two functions. One is the installation function, making the installation of the heating element 16 more firm. The other is the flow guiding function, enabling the heating cavity 15 to form a curved flow path, which can effectively extend the flow path of the circulating water and improve the preheating effect.

[0057] As an alternative implementation, as Figure 1 and Figure 3 shown, a sewage outlet 143 communicating with the heating cavity 15 is arranged on the housing 14, and the sewage outlet 143 is used for discharging the dirt inside the heating cavity 15.

[0058] A sewage valve 145 is arranged at the sewage outlet 143, and the sewage valve 145 is used for controlling the flow of the sewage outlet 143.

[0059] As an alternative implementation, as Figure 1 and Figure 3 shown, an exhaust port 144 communicating with the heating cavity 15 is arranged on the housing 14, and the exhaust port 144 is used for discharging the gas inside the heating cavity 15, which can effectively avoid excessive pressure inside the heating cavity 15 and improve the safety of equipment use.

[0060] An exhaust port 144 is provided with an exhaust valve 146 for controlling the flow of the exhaust port 144.

[0061] As an alternative embodiment, as Figure 1 shown, a first stop valve 31 is provided on the water inlet pipe 3 for controlling the flow of the water inlet pipe 3.

[0062] A second stop valve 41 is provided on the water outlet pipe 4 for controlling the flow of the water outlet pipe 4.

[0063] As an alternative embodiment, as Figures 4-6 shown, the diesel engine preheating system of the diesel locomotive further includes a cabinet 8. The pipeline heater 1, the electric control box 21 and the water pump 5 are all arranged in the cabinet 8, and the control panel 212 is arranged on the front side of the cabinet 8.

[0064] The pipeline heater 1, the electric control box 21, the water pump 5 and the cabinet 8 form a diesel engine preheating device for the diesel locomotive. The bottom side and the right side of the cabinet 8 are respectively fixed to the diesel locomotive.

[0065] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" and "several" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims described above.

Claims

1. An internal combustion locomotive diesel engine preheating system, characterized in that, It includes a pipeline heater and a control device, where: The pipeline heater is connected with a water inlet pipe and a water outlet pipe. The water inlet pipe is connected to a water storage tank, a water pump is arranged on the water inlet pipe, and the water outlet pipe is connected to a device; Both the pipeline heater and the water pump are electrically connected to the control device; The control device includes an electric control box. The pipeline heater is provided with a first temperature controller, a second temperature controller and a third temperature controller. Wherein: the first temperature controller, the second temperature controller and the third temperature controller are all electrically connected to the electric control box; the first temperature controller can collect the inlet water temperature of the pipeline heater and feedback it to the electric control box; the second temperature controller can collect the outlet water temperature of the pipeline heater and feedback it to the electric control box; the third temperature controller can collect the cavity temperature of the pipeline heater and feedback it to the electric control box.

2. The diesel engine preheating system for diesel locomotives according to claim 1, characterized in that, The pipeline heater is electrically connected to the electric control box; The water pump is electrically connected to the electric control box.

3. The diesel engine preheating system of an internal combustion locomotive according to claim 2, characterized in that, The control device includes a remote monitoring control terminal. A wireless communication module is arranged in the electric control box, and the electric control box is in communication connection with the remote monitoring control terminal through the wireless communication module.

4. The diesel engine preheating system for diesel locomotives according to claim 2, characterized in that, The pipeline heater includes a housing, where: A heating cavity is arranged in the housing, and heating elements are arranged in the heating cavity; A water inlet is arranged on the housing and communicated with the heating cavity, and the water inlet is connected to the water inlet pipe; A water outlet is arranged on the housing and communicated with the heating cavity, and the water outlet is connected to the water outlet pipe.

5. The diesel engine preheating system for diesel locomotives according to claim 4, characterized in that, A plurality of flow guiding plates are arranged in the heating cavity, and all the flow guiding plates are alternately distributed left and right in sequence along the axial direction of the heating cavity to form a curved flow path for circulating water to flow through.

6. The preheating system for the diesel engine of an internal combustion locomotive according to claim 4, characterized in that, A sewage outlet is arranged on the housing and communicated with the heating cavity; A sewage valve is arranged at the sewage outlet.

7. The diesel engine preheating system for diesel locomotives according to claim 4, characterized in that, An exhaust port is arranged on the housing and communicated with the heating cavity; An exhaust valve is arranged at the exhaust port.

8. The diesel engine preheating system for diesel locomotives according to claim 1, characterized in that, A first stop valve is arranged on the water inlet pipe; A second stop valve is arranged on the water outlet pipe.

9. The diesel engine preheating system for diesel locomotives according to claim 2, wherein, The preheating system for the diesel engine of the diesel locomotive further includes a cabinet, and the pipeline heater, the electric control box and the water pump are all arranged in the cabinet.

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