Fuel oil preheating device for stretching machine

Abstract

The invention discloses a fuel oil preheating device for a stretching machine, which comprises a mounting seat, the mounting seat is detachably mounted on the stretching machine, a preheater and a heat dissipation box which are connected through a pipeline are mounted on the mounting seat, a circulating pump is arranged on the connecting pipeline of the heat dissipation box and the preheater, a preheating pipe is arranged in the heat dissipation box, and the preheating pipe is connected with the heat dissipation box. The two ends of the preheating pipe are connected with a first converter valve and a second converter valve respectively, the first converter valve is a one-inlet and two-outlet valve, the second converter valve is a two-inlet and one-outlet valve, and a straight-through pipe is arranged between the first converter valve and the second converter valve. The outlet end of the second converter valve is connected to an engine oil supply pipe of the stretching machine oil tank. When the fuel preheating device does not need to be used, after the state is switched through the first converter valve and the second converter valve, the fuel preheating device can be disassembled through the position of the preheating pipe, the working state is not affected, disassembly and assembly of the fuel preheating device on the stretching machine are simplified, and the fuel preheating device can be conveniently applied to different stretching machines.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power installation and relates to a fuel preheating device for a tensioner. Background Art

[0002] A tensioner is a mechanical device used to provide tension for cables by pulling cables during the erection of electric power cables. The tensioner includes at least two tension wheels, and the tension wheels are usually driven by a diesel engine of the tensioner to rotate. The cable is wound around the tension wheels. Through the drive of the diesel engine, the tension wheels release or pull the cable, and the tension of the cable is controlled by a control system.

[0003] China has a vast territory with different topographies and landforms. During cable installation, it is possible to construct in plateau areas or cold regions. In plateau areas or cold regions, the temperature is relatively low, which will have a certain impact on the operation of the diesel engine system of the tensioner. At present, the diesel fuel is mainly heated by a fuel preheater. However, the working environment of the tensioner is variable. When fuel heating is not required, the fuel preheater causes waste of fuel and increases the maintenance cost of the equipment. Moreover, when installing the fuel preheater, major modifications need to be made to the diesel engine system, which is rather troublesome. Summary of the Invention

[0004] In view of the above problems, the present invention provides a fuel preheating device for a tensioner, which well solves the problems in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A fuel preheating device for a tensioner, comprising:

[0007] A mounting seat detachably mounted on the tensioner;

[0008] A preheater fixedly mounted on the mounting seat;

[0009] A radiator box fixedly mounted on the mounting seat. The liquid inlet and outlet of the radiator box are connected to the corresponding ports of the preheater through pipelines. An antifreeze is provided in the radiator box, and a circulation pump is provided on the pipeline connecting to the preheater;

[0010] A preheating pipe passing through the radiator box;

[0011] A first commutation valve which is a one-in-two-out valve, and the preheating pipe is mounted at the outlet end of the first commutation valve;

[0012] A second commutation valve which is a two-in-one-out valve, and the preheating pipe is mounted at the inlet end of the second commutation valve;

[0013] A straight pipe, with both ends of the straight pipe respectively connected to the outlet end of the first converter valve and the inlet end of the second converter valve;

[0014] During installation, the inlet end of the first converter valve is connected to the tensioning machine oil tank, and the outlet end of the second converter valve is connected to the engine fuel supply pipe of the tensioning machine oil tank.

[0015] Optionally, a plurality of heat exchange pipes are arranged in a rectangular array in the heat dissipation box, and both ends of the heat exchange pipes are connected to the preheating pipes.

[0016] Optionally, a reflux pump is installed in the mounting seat, and the reflux pump is installed on the preheating pipe.

[0017] Optionally, check valves are installed at the inlet ends of the second converter valves.

[0018] Optionally, a check valve chamber is fixedly installed on the mounting seat. A pipe installation port is provided at the bottom of the check valve chamber, which is respectively connected to the preheating pipe and the inlet end of the second converter valve. An air inlet is provided at the upper end of the check valve chamber.

[0019] Optionally, the reflux pump is a two-way pump.

[0020] Optionally, a protection interface is provided at one end of the first converter valve connected to the preheating pipe. The protection interface includes:

[0021] A wire-breaking block, with at least two jacks opened in the wire-breaking block, and the power supply wire of the first converter valve is connected to the two jacks;

[0022] A wiring block, with a U-shaped bent wire arranged inside the wiring block;

[0023] Among them, the wire-breaking block is fixedly installed at the normally closed outlet of the first converter valve when powered off, and the wiring block is fixedly installed at the inlet end of the preheating pipe. During installation, the U-shaped bent wire is inserted into the jacks along with the installation of the preheating pipe, so that the power supply wire of the first converter valve is connected.

[0024] Optionally, the wire-breaking block is also installed at the normally closed inlet of the second converter valve when powered off, and the wiring block is installed at the outlet end of the preheating pipe.

[0025] Optionally, universal wheels are provided at the bottom of the mounting seat.

[0026] Optionally, a temperature sensor is connected to the preheating pipe.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. By setting a detachable mounting base, a first commutation valve, and a second commutation valve, during installation, the engine fuel supply pipe is connected between the first commutation valve and the second commutation valve. When not in use, after switching the states of the first commutation valve and the second commutation valve, it can be disassembled through the position of the preheating pipe without affecting the working state, simplifying the disassembly and assembly of the fuel preheating device on the tensioner and facilitating the application of the fuel preheating device on different tensioners.

[0029] 2. When the fuel preheating device is not in use, there is residual diesel in the preheating pipe. By setting a reflux pump, when disassembling the fuel preheating device, the residual in the preheating pipe is pumped back to the fuel tank, reducing waste and at the same time reducing the possibility that the diesel adheres in the pipe due to long-term non-flow in the preheating pipe and affects the use.

[0030] 3. By setting a disconnection block and a connection block, the first commutation valve is in an open circuit state when the preheating pipe is not installed, and the position where the first commutation valve is connected to the preheating pipe is in a normally closed state, reducing the possibility of diesel leakage when the preheating pipe is not installed. After the preheating pipe is disassembled, the first commutation valve is forced to return to the straight-through pipe path state. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is the overall structural schematic diagram of an embodiment of the present invention

[0032] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0033] Reference numerals: 1, mounting base;

[0034] 2, preheater;

[0035] 3, heat dissipation box; 31, preheating pipe; 311, heat exchange pipe;

[0036] 41, first commutation valve; 42, second commutation valve; 43, straight-through pipe; 44, protection interface; 441, disconnection block; 442, connection block;

[0037] 5, reflux pump; 51, check valve chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figure 1, A fuel preheating device for a tensioning machine disclosed in an embodiment of the present invention, including a mounting base 1, the mounting base 1 is detachably mounted on the tensioning machine, a preheater 2 and a heat dissipation box 3 are mounted on the mounting base 1, the liquid inlet and outlet of the heat dissipation box 3 are connected to the corresponding ports of the preheater 2 through pipelines, antifreeze is provided in the heat dissipation box 3, a circulation pump is provided on the pipeline connected to the preheater 2, a preheating pipe 31 is provided in the heat dissipation box 3, both ends of the preheating pipe 31 penetrate through the heat dissipation box 3, and a first flow conversion valve 41 and a second flow conversion valve 42 are respectively connected to both ends of the preheating pipe 31. The first flow conversion valve 41 is a one-in-two-out valve, the preheating pipe 31 is installed at the outlet end of the first flow conversion valve 41, the second flow conversion valve 42 is a two-in-one-out valve, the preheating pipe 31 is installed at the inlet end of the second flow conversion valve 42, and a straight pipe 43 is provided between the outlet end of the first flow conversion valve 41 and the inlet end of the second flow conversion valve 42. During installation, the inlet end of the first flow conversion valve 41 is connected to the fuel tank of the tensioning machine, and the outlet end of the second flow conversion valve 42 is connected to the engine fuel supply pipe of the tensioning machine.

[0040] Specifically, the heat dissipation box 3 is connected to the preheater 2, the antifreeze is heated by the preheater 2 to provide heat for the preheating pipe 31, and the diesel in the fuel tank of the tensioning machine enters the engine fuel supply pipe through the first flow conversion valve 41, the preheating pipe 31 and the second flow conversion valve 42.

[0041] In this way, by providing the detachable mounting base 1, the first flow conversion valve 41 and the second flow conversion valve 42, during installation, the engine fuel supply pipe is connected to the first flow conversion valve 41 and the second flow conversion valve 42. When not in use, after switching the states of the first flow conversion valve 41 and the second flow conversion valve 42, it can be disassembled through the position of the preheating pipe 31, which does not affect the working state, simplifies the disassembly and assembly of the fuel preheating device on the tensioning machine, and facilitates the application of the fuel preheating device on different tensioning machines.

[0042] In some feasible ways, the preheater 2 is a fuel preheater in the prior art, the heat dissipation box 3 is a rectangular box body, a one-way exhaust hole and an antifreeze addition hole are provided on the heat dissipation box 3. To increase the heat absorption area, the preheating pipe 31 is spirally installed in the heat dissipation box 3, and both the first flow conversion valve 41 and the second flow conversion valve 42 are two-position three-way valves, and the first flow conversion valve 41 and the second flow conversion valve 42 are used to control whether diesel enters the fuel preheating device.

[0043] As a specific implementation manner of a fuel preheating device for a tensioning machine provided by the application, a plurality of heat exchange pipes 311 are arranged in a rectangular array in the heat dissipation box 3, and both ends of the heat exchange pipes 311 are connected to the preheating pipe 31.

[0044] Overall, by arranging the array of heat exchange pipes 311, the diesel entering the heat dissipation box 3 is dispersed by the array of heat exchange pipes 311, increasing the contact area with the heated antifreeze, enabling the diesel to be heated quickly and improving the heating efficiency.

[0045] As another specific embodiment of a fuel preheating device for a tensioning machine provided in the application, a reflux pump 5 is installed in the mounting seat 1, and the reflux pump 5 is installed on the preheating pipe 31.

[0046] Combined with the specific use scenario, when the fuel preheating device is not needed, there is residual diesel in the preheating pipe 31. By setting the reflux pump 5, when the fuel preheating device is disassembled, the residual in the preheating pipe 31 is pumped back into the fuel tank, reducing waste and at the same time reducing the possibility that the diesel adheres to the inside of the pipe due to long-term non-flow in the preheating pipe 31 and affecting the use.

[0047] Further, check valves are installed at the inlet ends of the second commutation valves 42.

[0048] It should be understood that by setting the check valves, the possibility that the reflux pump 5 pumps out the diesel in the engine fuel supply pipe when pumping back the residual diesel is reduced.

[0049] Further, a check valve chamber 51 is fixedly installed on the mounting seat 1. A pipe installation port is provided at the bottom of the check valve chamber 51, which is respectively connected to the preheating pipe 31 and the inlet end of the second commutation valve 42. An air inlet is provided at the upper end of the check valve chamber 51.

[0050] It should be understood that by setting the check valve chamber 51, when the reflux pump 5 pumps back the residual diesel, it is extracted from the bottom of the check valve chamber 51, and the air pressure is balanced through the air inlet, facilitating the diesel to flow back without disassembling the preheating pipe 31 and the second commutation valve 42.

[0051] In some feasible ways, the check valve chamber 51 is a chamber body with a conical lower end.

[0052] Further, the reflux pump 5 is a two-way pump.

[0053] It should be understood that by setting the two-way pump and cooperating with the check valve chamber 51, the fuel preheating device can preheat some diesel first and enter the check valve chamber 51 when the tensioning machine is not started, facilitating the quick start when the tensioning machine is in use.

[0054] As a specific embodiment of a fuel preheating device for a tensioning machine provided in the application, please refer to Figure 2 , at one end where the first commutation valve 41 is connected to the preheating pipe 31, a protection interface 44 is provided. The protection interface 44 includes a disconnection block 441 and a wiring block 442. The disconnection block 441 is provided with at least two jacks. The power supply wire of the first commutation valve 41 is connected to the two jacks. The wiring block 442 is provided with a U-shaped bent wire. The disconnection block 441 is fixedly installed at the normally closed outlet of the first commutation valve 41 when powered off, and the wiring block 442 is fixedly installed at the inlet end of the preheating pipe 31. During installation, the U-shaped bent wire is inserted into the jacks along with the installation of the preheating pipe 31 to connect the power supply wire of the first commutation valve 41.

[0055] It should be understood that by providing the disconnect block 441 and the junction block 442, the first converter valve 41 is in an open circuit state when the preheating tube 31 is not installed, and the first converter valve 41 is in a normally closed state when connected to the preheating tube 31, thereby reducing the possibility of diesel leakage when the preheating tube 31 is not installed, so that after the preheating tube 31 is removed, the first converter valve 41 is forced to return to the passage state of the straight-through tube 43.

[0056] Furthermore, a disconnect block 441 is also installed at the normally closed inlet of the second converter valve 42 when the power is off, and a wiring block 442 is installed at the outlet of the preheating tube 31.

[0057] In some feasible embodiments, the disconnection block 441 and the connection block 442 are both rectangular blocks, the control line of the first converter valve 41 is connected to one of the jacks, and the other jack is connected to the control module of the first converter valve 41. A U-shaped bent wire is provided in the connection block 442. After the U-shaped bent wire is inserted into the jack, the two jacks are connected. The number of jacks can be determined according to the number of control lines of the first converter valve 41.

[0058] As a specific implementation of a fuel preheating device for a tensioning machine provided in the application, a universal wheel is provided at the bottom of the mounting seat 1.

[0059] It should be understood that the provision of universal wheels facilitates the movement of the fuel preheating device.

[0060] As a specific implementation of a fuel preheating device for a tensioning machine provided in the application, the preheating pipe 31 is connected to a temperature sensor.

[0061] It should be understood that by providing a temperature sensor, it is convenient to better control the temperature of the diesel.

[0062] In combination with specific usage scenarios, a single-chip microcomputer control module is also provided on the mounting base 1, and the temperature sensor, the preheater 2 and the above-mentioned solenoid valve and the pump body are all program-controlled by the control module.

[0063] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel preheating device for a stretching machine, characterized in that, Comprising: A mounting base, which is detachably mounted on the tensioning machine; A preheater, which is fixedly mounted on the mounting base; A heat dissipation box, which is fixedly mounted on the mounting base. The liquid inlet and liquid outlet of the heat dissipation box are connected to the corresponding ports of the preheater through pipelines. An antifreeze is arranged in the heat dissipation box, and a circulation pump is arranged on the pipeline connecting to the preheater; A preheating pipe, which penetrates through the heat dissipation box; A first commutation valve, which is a one-in-two-out valve, and the preheating pipe is mounted at the outlet end of the first commutation valve; A second commutation valve, which is a two-in-one-out valve, and the preheating pipe is mounted at the inlet end of the second commutation valve; A straight-through pipe, with both ends of which are respectively connected to the outlet end of the first commutation valve and the inlet end of the second commutation valve; During installation, the inlet end of the first commutation valve is connected to the oil tank of the tensioning machine, and the outlet end of the second commutation valve is connected to the engine fuel supply pipe of the oil tank of the tensioning machine.

2. The fuel preheating device for a stretching machine according to claim 1, characterized in that: A plurality of heat exchange pipes are arranged in the heat dissipation box in a rectangular array, and both ends of the heat exchange pipes are connected to the preheating pipe.

3. The fuel preheating device for a stretching machine according to claim 1, characterized in that: A reflux pump is mounted in the mounting base, and the reflux pump is mounted on the preheating pipe.

4. A fuel preheating device for a stretching machine according to claim 3, characterized in that: Check valves are mounted at the inlet ends of the second commutation valve.

5. A fuel preheating device for a stretching machine according to claim 4, characterized in that: A check valve bin is fixedly mounted on the mounting base. A pipe mounting port is arranged at the bottom of the check valve bin, which is respectively connected to the preheating pipe and the inlet end of the second commutation valve, and an air inlet is arranged at the upper end of the check valve bin.

6. The fuel preheating device for a stretching machine according to claim 5, wherein: The reflux pump is a two-way pump.

7. A fuel preheating device for a stretching machine according to claim 1, characterized in that: A protection interface is arranged at one end of the first commutation valve connecting the preheating pipe. The protection interface includes: A break block, at least two jacks are opened in the break block, and the power supply wire of the first commutation valve is connected to the two jacks; A wiring block, in which a U-shaped bent wire is arranged; Wherein, the break block is fixedly mounted at the normally closed outlet of the first commutation valve when powered off, and the wiring block is fixedly mounted at the inlet end of the preheating pipe. During installation, the U-shaped bent wire is inserted into the jack along with the installation of the preheating pipe to connect the power supply wire of the first commutation valve.

8. A fuel preheating device for a stretching machine according to claim 7, characterized in that: The break block is also mounted at the normally closed inlet of the second commutation valve when powered off, and the wiring block is mounted at the outlet end of the preheating pipe.

9. A fuel preheating device for a stretching machine according to claims 1-7, characterized in that: Universal wheels are arranged at the bottom of the mounting base.

10. A fuel preheating device for a stretching machine according to claims 1-7, characterized in that: A temperature sensor is connected to the preheating pipe.

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