Heat conduction oil system

Abstract

The utility model discloses a heat conduction oil system which comprises an expansion tank, an oil supply pipeline, an oil return pipeline, a cooler, a collecting container, a single expansion pipe and an auxiliary exhaust pipe. The oil supply pipeline and the oil return pipeline are respectively connected with the expansion tank, the oil supply pipeline is provided with an oil supply valve, and the oil return pipeline is provided with an oil return valve; the heat-conducting oil can enter the expansion tank through the oil supply pipeline and circulate in the expansion tank, so that the temperature of the heat-conducting oil in the expansion tank is increased, low-boiling-point substances in the heat-conducting oil are gasified, and the pressure of the expansion tank is increased; the cooler is connected with a gas outlet of the expansion tank through a first pipeline, and the cooler is connected with the collecting container through a second pipeline; and gasified low-boiling-point substances are conveyed to a cooler for cooling through a gas outlet of the expansion tank, and then are conveyed to the collecting container. According to the conduction oil system provided by the utility model, the content of low-boiling-point substances in the conduction oil can be obviously reduced, and the normal work of the system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat conducting oil system technical field relates to a heat conducting oil system especially relates to a heat conducting oil system of low boiling point removal. BACKGROUND

[0002] The heat conducting oil can be cracked to produce low boiling point substance in operation, and the proportion of low boiling point substance of part of chemical plant heat conducting oil reaches 5%, reaches high limit standard (5%); The low boiling point substance can be vaporized into gas under high temperature and low pressure, and the characteristics of the low boiling point substance can easily cause production accidents.

[0003] The low boiling point substance is that the molecular chain is broken in the use process of the heat conducting oil, and the substance with the boiling point lower than the distillation range of the heat conducting oil is formed. Because the boiling point of the low boiling point substance is low, it is more likely to be volatilized into gaseous substance under normal operating temperature and pressure of the system, therefore, when the low boiling point substance content in the heat conducting oil accumulates to a certain degree, the following influences can be caused: (1) the circulating pump cavitation is caused, and the circulating pump mechanical seal can be damaged in severe cases, and even the impeller is damaged; (2) the flash point of the heat conducting oil is reduced, and in extreme cases, the flash point can be reduced below the system design standard, and the system safety is endangered; (3) the system pressure rises, and unnecessary discharge is caused; (4) the local overheating of the heat conducting oil in the heating furnace is intensified, and the service life of the heat conducting oil is affected.

[0004] Therefore, if the low boiling point substance content in the heat conducting oil is high, the low boiling point substance content should be reduced by removing the low boiling point substance, and the low boiling point substance removal not only is expensive, but also needs to provide a site, power supply and cooling water system, and the burden of the plant is increased.

[0005] Therefore, it is urgent to design a new heat conducting oil system to overcome at least part of the above-mentioned defects of the existing heat conducting oil system. UTILITY MODEL CONTENT

[0006] The utility model provides a heat conducting oil system, low boiling point substance content in heat conducting oil can be reduced significantly, system normal work is ensured, and the service life of heat conducting oil system is prolonged.

[0007] In order to solve the above technical problem, according to one aspect of the utility model, the following technical scheme is adopted:

[0008] A kind of heat conducting oil system, the heat conducting oil system includes: expansion tank, oil supply line, oil return line, cooler, collection container, single expansion pipe and auxiliary exhaust pipe;

[0009] The oil supply line and the oil return line are connected with the expansion tank respectively, the oil supply line is provided with an oil supply valve, and the oil return line is provided with an oil return valve;

[0010] The first end of the auxiliary exhaust pipe is connected with the oil supply pipeline and the oil return pipeline, and the second end of the auxiliary exhaust pipe is connected with the expansion tank; the auxiliary exhaust pipe is provided with an auxiliary exhaust valve; the first end of the single expansion pipe is connected with the expansion tank, and the second end of the single expansion pipe is connected with the oil return pipeline;

[0011] The heat conducting oil can enter the expansion tank through the oil supply pipeline, circulate in the expansion tank, so that the temperature of the heat conducting oil in the expansion tank is increased, the low-boiling substance in the heat conducting oil is gasified, and the pressure of the expansion tank is increased;

[0012] The cooler is connected with the gas outlet of the expansion tank through a first pipeline, and is connected with the collecting container through a second pipeline; the gasified low-boiling substance is transported to the cooler through the gas outlet of the expansion tank for cooling, and then is transported to the collecting container.

[0013] As an embodiment of the utility model, the heat conducting oil system further comprises a nitrogen sealing device; the nitrogen sealing device is connected with the expansion tank.

[0014] As an embodiment of the utility model, the second pipeline is provided with a vent valve.

[0015] As an embodiment of the utility model, the heat conducting oil system further comprises a main control circuit; the main control circuit is connected with the oil supply valve, the oil return valve and the auxiliary exhaust valve respectively, and can send control signals to the oil supply valve, the oil return valve and the auxiliary exhaust valve to control the working of the oil supply valve, the oil return valve and the auxiliary exhaust valve.

[0016] As an embodiment of the utility model, the oil supply pipeline comprises a first oil supply pipeline and a second oil supply pipeline; the first oil supply pipeline is provided with a first oil supply valve, and the second oil supply pipeline is provided with a second oil supply valve.

[0017] The output end of the main control circuit is connected with the input end of the first oil supply valve and the input end of the second oil supply valve respectively, and can send control signals to the first oil supply valve and the second oil supply valve to control the working of the first oil supply valve and the second oil supply valve.

[0018] As an embodiment of the utility model, the first pipeline is provided with a cooler inlet valve, and the second pipeline is provided with a cooler outlet valve.

[0019] The output end of the main control circuit is connected with the input end of the cooler inlet valve and the input end of the cooler outlet valve respectively, and can send control signals to the cooler inlet valve and the cooler outlet valve to control the working of the cooler inlet valve and the cooler outlet valve.

[0020] As an embodiment of the utility model, the first pipeline is provided with a flow sensor; the flow sensor is used to sense the flow data of the airflow flowing through the first pipeline.

[0021] The output end of the flow sensor is connected to the input end of the main control circuit, and can send the sensed flow data to the main control circuit.

[0022] As an embodiment of the utility model, the expansion tank is provided with a pressure sensor, which is used to sense pressure data in the expansion tank.

[0023] The output end of the pressure sensor is connected to the input end of the main control circuit, and can send the sensed pressure data to the main control circuit.

[0024] The heat conducting oil system provided by the utility model can significantly reduce the content of low-boiling substances in heat conducting oil, ensure normal operation of the system, and prolong the service life of the heat conducting oil system. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a composition schematic view of the heat conducting oil system in an embodiment of the utility model.

[0026] Figure 2 It is a composition schematic view of the control part of the heat conducting oil system in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] The preferred embodiments of the utility model will be described in detail below with reference to the drawings.

[0028] In order to further understand the utility model, the preferred embodiments of the utility model will be described below in combination with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, and are not limitations on the claims of the utility model.

[0029] The description of this part is only for several typical embodiments, and the utility model is not limited to the range described in the embodiments. The same or similar prior art means and some technical features in the embodiments are mutually replaced, which is also within the description and protection range of the utility model.

[0030] The "connection" in the specification includes direct connection and indirect connection.

[0031] The utility model discloses a kind of heat conducting oil systems, Figure 1 It is a composition schematic view of the heat conducting oil system in an embodiment of the utility model;Please refer to Figure 1 The heat conducting oil system includes: expansion tank 1, oil supply pipeline 2, oil return pipeline 3, cooler 4, collection container 5, single expansion pipe 6 and auxiliary exhaust pipe 7. Expansion tank 1 is connected to oil supply pipeline 2 and oil return pipeline 3 respectively, and oil supply pipeline 2 is provided with oil supply valve 13, and oil return pipeline 3 is provided with oil return valve 14.

[0032] The first end of the auxiliary exhaust pipe 7 is connected with the oil supply pipeline 2 and the oil return pipeline 3, and the second end of the auxiliary exhaust pipe 7 is connected with the expansion tank 1; the auxiliary exhaust pipe 7 is provided with an auxiliary exhaust valve 15; the first end of the single expansion pipe 6 is connected with the expansion tank 1, and the second end of the single expansion pipe 6 is connected with the oil return pipeline 3.

[0033] The heat conducting oil can enter the expansion tank 1 through the oil supply pipeline 2, circulate in the expansion tank 1, so that the temperature of the heat conducting oil in the expansion tank 1 is increased, the low-boiling substances in the heat conducting oil are gasified, and the pressure of the expansion tank 1 is increased. The cooler 4 is connected with the gas outlet of the expansion tank 1 through the first pipeline 11, and the cooler 4 is connected with the collecting container 5 through the second pipeline 12; the gasified low-boiling substances are transported to the cooler 4 through the gas outlet of the expansion tank 1 for cooling, and then transported to the collecting container 5. The first pipeline 11 is provided with a cooler inlet valve 16, and the second pipeline 12 is provided with a cooler outlet valve 17.

[0034] In an embodiment of the utility model, the heat conducting oil system further includes nitrogen sealing device 8; nitrogen sealing device 8 is connected with expansion tank 1;Second pipeline 12 can be provided with vent valve 9.

[0035] Figure 2 It is the component schematic drawing of heat conducting oil system control part in an embodiment of the utility model;Please refer to Figure 2 In an embodiment of the utility model, the heat conducting oil system further includes main control circuit 10;Main control circuit 10 is connected with oil supply valve 13, oil return valve 14, auxiliary exhaust valve 15, cooler inlet valve 16 and cooler outlet valve 17 respectively, can send control signal to oil supply valve 13, oil return valve 14, auxiliary exhaust valve 15, cooler inlet valve 16 and cooler outlet valve 17 to control its work.

[0036] First pipeline 11 can be provided with flow sensor 18, and flow sensor 18 is used to sense the flow data of airflow flowing through first pipeline 11;The output end of flow sensor 18 is connected with the input end of main control circuit 10, and the sensed flow data can be sent to main control circuit 10.

[0037] Expansion tank 1 is provided with pressure sensor 19, and pressure sensor 19 is used to sense the pressure data in expansion tank 1;The output end of pressure sensor 19 is connected with the input end of main control circuit 10, and the sensed pressure data can be sent to main control circuit 10.

[0038] Main control circuit 10 can obtain the content information of low-boiling substances according to the data sensed by flow sensor 18 or / and pressure sensor 19, and the information can be used to judge whether auxiliary exhaust valve 15 is opened.

[0039] In one use scenario of the utility model, the heat conducting oil system comprises a single expansion pipe system, for the single expansion pipe system with the auxiliary exhaust pipe connected to the oil supply pipeline, slowly open the auxiliary exhaust valve in the system, let part of the heat conducting oil circulate through the expansion tank, make the heat conducting oil temperature in the expansion tank rise (generally finally close to the heat conducting oil temperature of the oil supply main pipe) : after the low boiling point gasification, the expansion tank pressure rises, the low boiling point is discharged from the expansion tank together with nitrogen through the pressure control system.

[0040] In conclusion, the heat conducting oil system can significantly reduce the content of low boiling point in the heat conducting oil, ensure the normal work of the system, and prolong the service life of the heat conducting oil system.

[0041] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the combinations are within the scope of the present disclosure.

[0042] The description and application of the utility model are illustrative, and the scope of the utility model is not limited in the above-described embodiments. The effects or advantages involved in the embodiments can be interfered by various factors and can not be embodied in the embodiments, and the description of the effects or advantages is not used to limit the embodiments. The variations and changes of the disclosed embodiments are possible, and the replacements and equivalent components of the embodiments are known to those skilled in the art. It should be clear to those skilled in the art that the utility model can be realized in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential characteristics of the utility model. Other variations and changes of the disclosed embodiments can be made without departing from the scope and spirit of the utility model.

Claims

1. A heat transfer oil system, characterized in that, The heat transfer oil system includes: an expansion tank, an oil supply pipeline, an oil return pipeline, a cooler, a collection container, a single expansion pipe, and an auxiliary exhaust pipe; The oil supply pipeline and the oil return pipeline are respectively connected to the expansion tank. The oil supply pipeline is equipped with an oil supply valve, and the oil return pipeline is equipped with an oil return valve. The first end of the auxiliary exhaust pipe is connected to the oil supply line and the oil return line, and the second end of the auxiliary exhaust pipe is connected to the expansion tank; the auxiliary exhaust pipe is equipped with an auxiliary exhaust valve. The first end of the single expansion tube is connected to the expansion tank, and the second end of the single expansion tube is connected to the return oil pipeline. The heat transfer oil can enter the expansion tank through the oil supply pipeline and circulate in the expansion tank, which raises the temperature of the heat transfer oil in the expansion tank and causes the low-boiling substances in the heat transfer oil to vaporize, thereby increasing the pressure in the expansion tank. The cooler is connected to the gas outlet of the expansion tank via a first pipe, and the cooler is connected to the collection container via a second pipe; the vaporized low-boiling-point substance is transported to the cooler for cooling through the gas outlet of the expansion tank, and then transported to the collection container.

2. The heat transfer oil system according to claim 1, characterized in that: The heat transfer oil system further includes a nitrogen sealing device; the nitrogen sealing device is connected to the expansion tank.

3. The heat transfer oil system according to claim 1, characterized in that: The second pipeline is equipped with a vent valve.

4. The heat transfer oil system according to claim 1, characterized in that: The heat transfer oil system further includes a main control circuit; the main control circuit is connected to the oil supply valve, the oil return valve and the auxiliary exhaust valve respectively, and can send control signals to the oil supply valve, the oil return valve and the auxiliary exhaust valve to control their operation.

5. The heat transfer oil system according to claim 4, characterized in that: The first pipeline is equipped with a cooler inlet valve, and the second pipeline is equipped with a cooler outlet valve; The output terminal of the main control circuit is connected to the input terminal of the cooler inlet valve and the input terminal of the cooler outlet valve, respectively, and can send control signals to the cooler inlet valve and the cooler outlet valve to control their operation.

6. The heat transfer oil system according to claim 4, characterized in that: The first pipeline is equipped with a flow sensor, which is used to sense the flow rate data of the airflow passing through the first pipeline; The output terminal of the flow sensor is connected to the input terminal of the main control circuit, and can send the sensed flow data to the main control circuit.

7. The heat transfer oil system according to claim 6, characterized in that: The expansion tank is equipped with a pressure sensor, which is used to sense the pressure data inside the expansion tank. The output terminal of the pressure sensor is connected to the input terminal of the main control circuit, and can send the sensed pressure data to the main control circuit.

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