Outer circulation heating mounting and dismounting device for thrust block resistor of water turbine

Abstract

The invention provides a water turbine thrust block resistor external circulation heating mounting and dismounting device which is characterized by comprising a spiral hot oil pipe wound on a thrust block, the input end of the spiral hot oil pipe is connected with a hot oil storage tank through an oil inlet pipeline, and the output end of the spiral hot oil pipe is connected with a heating oil groove in which a heating assembly is arranged through an oil outlet pipeline; an oil conveying pipeline for connecting the heating oil tank and the hot oil storage tank is arranged between the heating oil tank and the hot oil storage tank, oil pumps are respectively arranged on the oil inlet pipeline and the oil conveying pipeline, and a one-way valve is further arranged on the oil outlet pipeline. The heat conduction oil in the heating oil groove is heated to the required temperature through the heating assembly and then fed into the hot oil storage box, the heat conduction oil is fed into the spiral hot oil pipe through the oil pump to heat the thrust block during use, and the heated heat conduction oil returns to the heating oil groove through the oil pump to be heated again. The whole process is efficient, fast, convenient to use, time-saving and labor-saving

Description

Technical Field

[0001] The invention relates to an installation and removal device, in particular to an installation and removal device for a turbine thrust head resistance external circulation heating, belonging to the technical field of mechanical design and manufacturing. Background Art

[0002] As an important part of the turbine, the efficiency of disassembly of the thrust head will directly affect the maintenance period of the unit, and the accuracy of reinstallation is also crucial to the operating efficiency of the turbine. Some existing hydropower plants often use resistive heating plates to install and remove the thrust head. The disadvantage is that the initial preparation time is long and a large amount of manpower is required to arrange the power cables. Moreover, the heating speed is slow and the temperature is uncontrollable. A dedicated person is required to measure the temperature at all times, which is time-consuming and labor-intensive. In addition, the wiring point is easily exposed to the air, which can easily cause personal injury and equipment damage under high pressure. Therefore, it is necessary to improve the existing technology. Summary of the invention

[0003] In order to solve the problems of long preparation time, large manpower input, difficult temperature control, time-consuming and labor-intensive problems of existing turbine thrust head resistance heating plates when in use, the present invention provides a turbine thrust head resistance external circulation heating installation and removal device.

[0004] The present invention is completed through the following technical scheme: a turbine thrust head resistance external circulation heating installation and removal device, characterized in that it includes a spiral hot oil pipe wound on the thrust head, the input end of the spiral hot oil pipe is connected to the hot oil storage tank through an oil inlet pipe, and the output end is connected to the heating oil tank with a heating component therein through an oil outlet pipe, an oil pipeline connecting the heating oil tank and the hot oil storage tank is provided between the two, the oil inlet pipe and the oil pipeline are respectively provided with oil pumps, and a one-way valve is also provided on the oil outlet pipe, so that the heat-conducting oil in the heating oil tank can be heated to a required temperature through the heating component and then sent into the hot oil storage tank. When in use, the heat-conducting oil is sent to the spiral hot oil pipe through the oil pump to heat the thrust head, and the heated heat-conducting oil is returned to the heating oil tank through the oil pump for heating again. The whole process is efficient, fast, easy to use, and saves time and effort.

[0005] The heating component is configured as a high-resistance resistance wire, and the resistance wire is configured in at least six groups, so that the heat transfer oil can be heated quickly and evenly through the multiple groups.

[0006] The heat transfer oil is set to be an alkyl diphenyl ether type heat transfer oil, so that it can be stably used below 330° C. due to its low kinematic viscosity and good low-temperature fluidity.

[0007] The resistance wire is stirred by an oil pump and then fully mixed through a spiral bend pipe. Finally, the hot oil is stored from top to bottom in a hot oil storage tank through a trumpet-shaped pipe. The above four guarantees ensure that the temperature of the heat transfer oil is consistent.

[0008] The heating component is electrically connected to the operating screen and the control module, wherein: The operation screen has the functions of viewing the temperature of each temperature sensor in real time, setting the heating curve and time, and issuing commands to the control module according to temperature changes; The control module is capable of receiving and executing commands from the operating screen. It can compare the thrust head temperature measured by the laser thermometer with the heating temperature set on the operating screen, and command the transformer to change the voltage and thus change the heating resistor wire, ultimately achieving a self-regulating function.

[0009] The heating component is connected to a transformer, and the transformer is configured as a controllable transformer capable of adjusting voltage so as to keep the voltage stable.

[0010] The spiral hot oil pipe is made of metallic silver, which has a thermal conductivity of 429W / (m*K), second only to diamond and silicon, and ranks first among metals. It also has good plasticity and is easy to fit tightly against one side of the thrust head and be customized according to the outer contact surface of the thrust head.

[0011] The lower end of the spiral hot oil pipe is set as the input end, and the upper end is set as the output end, so as to avoid the oil flow speed being too fast and fully heat the thrust head.

[0012] The present invention has the following advantages and effects: by adopting the above scheme, the heat transfer oil in the heating oil tank is heated to the required temperature through the heating component, and then sent to the hot oil storage tank. When in use, the heat transfer oil is sent to the spiral hot oil pipe through the oil pump to heat the thrust head. The heated heat transfer oil is returned to the heating oil tank through the oil pump for heating again. The whole process is efficient, fast, easy to use, and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the heating oil tank and the hot oil storage tank 3 of the present invention; Figure 2 This is a structural diagram of the spiral hot oil pipe of the present invention. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0015] The invention provides a device for installing and removing the resistance external circulation heating of the thrust head of a water turbine, which comprises a spiral hot oil pipe 9 wound on the thrust head 8, wherein the input end of the spiral hot oil pipe 9 is connected to the hot oil storage tank 3 through an oil inlet pipe 6, and the output end is connected to the heating oil tank 1 with a heating component 2 therein through an oil outlet pipe 7, and an oil delivery pipe 5 connecting the heating oil tank 1 and the hot oil storage tank 3 is provided between the two. An oil pump 4 is provided on the oil inlet pipe 6 and the oil delivery pipe 5 respectively, and a one-way valve is also provided on the oil outlet pipe 7, so that the heat-conducting oil in the heating oil tank 1 is heated to a required temperature through the heating component 2, and then sent to the hot oil storage tank 3; when in use, the high-temperature heat-conducting oil is sent to the spiral hot oil pipe 9 through the oil inlet pipe 6 through the oil pump 4 to heat the thrust head 8, and the low-temperature heat-conducting oil after heating is returned to the heating oil tank 1 through the oil outlet pipe 7 for heating, and the whole process is efficient, fast, easy to use, time-saving and labor-saving, and finally the thrust head 8 is disassembled; The heating component 2 is configured as a high-resistance resistance wire, and the resistance wire is configured in at least six groups, so that the heat transfer oil can be heated quickly and evenly through multiple groups. The heat transfer oil is set to be an alkyl diphenyl ether type heat transfer oil, so that it can be used stably below 330°C due to its low kinematic viscosity and good low-temperature fluidity; The resistance wire is stirred by the oil pump and then fully mixed through the spiral bend pipe. Finally, the hot oil is stored from top to bottom in the hot oil storage tank 3 through the trumpet-shaped pipe. The above four guarantees make the temperature of the heat transfer oil consistent. The heating component 2 is electrically connected to the operating screen and the control module, wherein: The operation screen has the functions of viewing the temperature of each temperature sensor in real time, setting the heating curve and time, and issuing commands to the control module according to temperature changes; The control module is capable of receiving and executing commands from the operation screen. It can compare the thrust head temperature measured by the laser temperature meter with the heating temperature set on the operation screen, and command the transformer to change the voltage and thus change the heating resistor wire, thus finally realizing the self-regulation function. The heating component 2 is connected to a transformer, which is set as a controllable transformer capable of adjusting the voltage so as to keep the voltage stable; The material of the spiral hot oil pipe 9 is set to be metallic silver, whose thermal conductivity is 429W / (m*K), second only to diamond and silicon, ranking first among metals, and it has good plasticity, and is easy to be customized according to the outer contact surface of the thrust head by clinging to one side of the thrust head; The lower end of the spiral hot oil pipe 9 is set as the input end, and the upper end is set as the output end, so as to avoid the oil flow speed being too fast and fully heat the thrust head.

[0016] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0017] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for installing and removing a turbine thrust head resistance external circulation heating, characterized in that It includes a spiral hot oil pipe wound on the thrust head, the input end of the spiral hot oil pipe is connected to the hot oil storage tank through an oil inlet pipe, and the output end is connected to a heating oil tank with a heating component arranged therein through an oil outlet pipe. An oil delivery pipe connecting the heating oil tank and the hot oil storage tank is arranged between the two, and oil pumps are respectively arranged on the oil inlet pipe and the oil delivery pipe, and a one-way valve is also arranged on the oil outlet pipe.

2. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The heating component is configured as a high-resistance resistance wire, and the resistance wire is configured in at least six groups.

3. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The heat transfer oil is an alkyl diphenyl ether type heat transfer oil.

4. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The resistance wire is stirred by an oil pump and then fully mixed through a spiral bend pipe, and finally the hot oil is stored from top to bottom in a hot oil storage tank through a trumpet-shaped pipe.

5. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The heating component is electrically connected to the operating screen and the control module.

6. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The heating component is connected to a transformer, and the transformer is configured as a controllable transformer with adjustable voltage.

7. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The spiral hot oil pipe is made of metallic silver.

8. The installation and removal device for the resistance external circulation heating of the turbine thrust head according to claim 1 is characterized in that The lower end of the spiral hot oil pipe is set as an input end, and the upper end is set as an output end.

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