Environment-friendly oil filter for ORC power generation device
By designing an environmentally friendly oil filter, the problems of lubricating oil and refrigerant vaporization waste and pollution during filter element replacement were solved, realizing the recovery of lubricating oil and the efficient use of filter elements, thereby improving the operational stability and economy of ORC power generation units.
Patent Information
- Application Number
- CN202422647443.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-31
AI Technical Summary
When replacing the filter element in existing ORC power generation units, the lubricating oil and refrigerant vaporize, resulting in waste and pollution. Furthermore, non-condensable gases enter the system, affecting system stability.
Design an environmentally friendly oil filter, including a filter tank and a filter element. The oil and liquid refrigerant in the filter tank are discharged back to the oil separator through the oil drain port. A vacuum pump is used to evacuate and replenish the oil, and the filter element can be backflushed to extend its service life.
This avoids the loss of lubricating oil and refrigerant, prevents the entry of non-condensable gases, improves the efficiency of the filter element, and saves costs.
Smart Images
Figure CN223542599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil filter technology, and in particular to an environmentally friendly oil filter for ORC power generation devices. Background Technology
[0002] Existing ORC power generation units typically use oil pumps for lubrication systems. The oil storage tank is usually an oil separator located on the low-pressure side. The oil separator separates the gaseous refrigerant discharged from the expander from the entrained oil droplets that lubricate the expander rotor. The separated lubricating oil enters the oil pump and is then pumped back to the expander for further lubrication, while the gaseous refrigerant enters the condenser. Oil filters are installed at both the oil pump inlet and outlet to ensure the safe operation of the expander and working fluid pump. Depending on the degree of clogging, the filter element needs to be replaced periodically. When replacing the filter element, as the oil filter opens, the refrigerant in the oil-fluorine mixture inside the filter chamber rapidly vaporizes, causing the oil to boil and overflow, resulting in waste and pollution. Utility Model Content
[0003] To address the problems existing in the prior art, this utility model provides an environmentally friendly oil filter for ORC power generation units, including a filter tank and a filter element. The filter tank includes a tank body and a top cover disposed on the top of the tank body. The top cover is detachably connected to the tank body. The tank body includes a filter chamber, an oil inlet side, an oil outlet side, an exhaust side, an oil discharge side, and an air inlet side. The oil inlet side includes an oil inlet pipe and an oil inlet valve disposed on the oil inlet pipe. The oil outlet side includes an oil outlet pipe and an oil outlet valve disposed on the oil outlet pipe. The exhaust side includes an exhaust pipe and an exhaust valve disposed on the exhaust pipe. The oil discharge side includes an oil discharge pipe and an exhaust valve disposed on the oil discharge pipe. The filter canister has an oil drain valve, and the air intake side includes an air intake pipe and an air intake valve installed on the air intake pipe. The oil intake side is located at the bottom of the filter canister, the exhaust side is located on the top cover, the oil outlet side is located on the upper side wall of the filter canister, the oil drain side is located on the lower side wall of the filter canister, and the air intake side is located on the exhaust side or the oil outlet side. The oil intake pipe, oil outlet pipe, exhaust pipe, oil drain pipe, and air intake pipe are all connected to the filter chamber. The filter element is installed in the filter chamber and includes an oil inlet end and an oil outlet end. The oil inlet end is connected to the oil inlet pipe, and the oil outlet end is connected to the oil outlet pipe.
[0004] Compared with the prior art, the beneficial effects of this utility model are:
[0005] It can drain the oil and liquid refrigerant in the filter canister back to the oil separator through the oil drain port, avoiding the loss of lubricating oil and refrigerant during filter replacement, thus achieving a clean replacement. At the same time, after the liquid phase in the filter chamber is emptied, a vacuum pump can be used to evacuate and then replenish the oil, preventing the entry of non-condensable gases into the system due to filter replacement. If necessary, the filter can also be backflushed to extend its service life, improve its efficiency, and save costs. Attached Figure Description
[0006] The following description, with reference to the accompanying drawings, illustrates an embodiment of an environmentally friendly oil filter for an ORC power generation device according to the present invention. The accompanying drawings are as follows:
[0007] Figure 1 A schematic diagram of the overall structure where the air intake side is located on the oil outlet side;
[0008] Figure 2 This is a schematic diagram of the overall structure where the intake side is located on the exhaust side. Detailed Implementation
[0009] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0010] It should be noted that if there are directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model, they are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.
[0011] Furthermore, if the descriptions in this utility model involve terms such as "first" or "second," they are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0012] The specific implementation of this utility model will be described in detail below with reference to specific embodiments:
[0013] See Figure 1 and 2This utility model discloses an environmentally friendly oil filter for an ORC power generation unit, including a filter tank 100 and a filter element 102. The filter tank 100 includes a tank body and a top cover 101 disposed on the top of the tank body. The top cover 101 is detachably connected to the tank body. The tank body includes a filter chamber 103, an oil inlet side 1, an oil outlet side 2, an exhaust side 3, an oil discharge side 5, and an air inlet side 4. The oil inlet side 1 includes an oil inlet pipe and an oil inlet valve 11 disposed on the oil inlet pipe. The oil outlet side 2 includes an oil outlet pipe and an oil outlet valve 12 disposed on the oil outlet pipe. The exhaust side 3 includes an exhaust pipe and an exhaust valve 13 disposed on the exhaust pipe. The oil discharge side 5 includes an oil discharge pipe and an oil discharge valve 15 disposed on the oil discharge pipe. The air inlet side 4 includes an air inlet side. The filter includes a pipeline and an intake valve 14 installed on the intake pipeline. The oil inlet side 1 is located at the bottom of the filter tank 100, the exhaust side 3 is located on the upper cover 101, the oil outlet side 2 is located on the upper side wall of the filter tank 100, the oil discharge side 5 is located on the lower side wall of the filter tank 100, and the air inlet side 4 is located on either the exhaust side 3 or the oil outlet side 2. The oil inlet pipeline, oil outlet pipeline, exhaust pipeline, oil discharge pipeline, and air inlet pipeline are all connected to the filter chamber 103. The filter element 102 is installed in the filter chamber 103. The filter element 102 includes an oil inlet end 1021 and an oil outlet end 1022. The oil inlet end 1021 is connected to the oil inlet pipeline, and the oil outlet end 1022 is connected to the oil outlet pipeline.
[0014] Optionally, the intake side 4 is located on the oil outlet side 2 or the exhaust side 3, that is, the intake pipe of the intake side 4 is connected to the oil outlet pipe of the oil outlet side 2 or the exhaust pipe of the exhaust side 3, respectively as follows: Figure 1 and 2 As shown.
[0015] by Figure 1 Taking an example, the working principle of this utility model is as follows:
[0016] In use, the oil inlet valve 11 on the oil inlet side 1 is connected to the oil pump outlet pipeline, the oil outlet valve 12 on the oil outlet side 2 is connected to the expander and the parts of the generator that need lubrication, the exhaust valve 13 on the exhaust side 3 is connected to the atmosphere or a vacuum pump, the air inlet side 4 is connected to the expander air inlet filter and the pipeline between the expander and the oil outlet 2 via the air inlet valve 14, and the oil outlet valve 15 on the oil outlet side 5 is connected to the expander outlet pipeline or an oil separator. Two or more filter tanks 100 are connected in parallel to form a filter group. During operation, one filter is connected for filtration. When the pressure difference across the working filter is too large, the oil outlet valve 12 and the oil inlet valve 11 of another normal filter are opened for filtration. The oil inlet valve 11 and the oil outlet valve 12 of the filter with the large pressure difference are closed. The oil outlet valve 15 and the air inlet valve 14 of the filter are opened in sequence to purge the filter element 102 with the gas phase working medium filtered on the high-pressure side, so that the impurities of the filter element 102 are concentrated at the oil inlet end 1021 of the filter element, so as to achieve the purpose of reuse.
[0017] If filter element 102 meets the replacement criteria, open the oil drain valve 15 and exhaust valve 14 of the filter in sequence to drain the liquid phase in the filter chamber 103 using a high-temperature, high-pressure gaseous working medium. The determination of complete drainage can be made by monitoring the temperature of the oil drain side pipe section: the temperature rises, indicating that the liquid phase has been drained. After drainage, close the air inlet valve 14 and oil drain valve 15 in sequence, open the exhaust valve 13 to release pressure, and then remove the top cover 101 to replace the new filter element 102. After replacing filter element 102, tighten the top cover 101, connect the exhaust valve 13 to the vacuum pump to evacuate to below 93 Pa, and check whether there is any air leakage at the top cover 101 of the filter canister 100. If there is no air leakage, close the vacuum pump and exhaust valve 13, slightly open the oil inlet valve 11 to slowly fill the filter chamber 103 with lubricating oil, and close the oil inlet valve 11 for standby.
[0018] The present invention has thus far described the technical solution of the present invention with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present invention.
Claims
1. An environmentally friendly oil filter for ORC power generation units, comprising a filter tank and a filter element, characterized in that, The filter tank includes a tank body and a top cover disposed on the top of the tank body. The top cover is detachably connected to the tank body. The tank body includes a filter chamber, an oil inlet side, an oil outlet side, an exhaust side, an oil discharge side, and an air inlet side. The oil inlet side includes an oil inlet pipe and an oil inlet valve disposed on the oil inlet pipe. The oil outlet side includes an oil outlet pipe and an oil outlet valve disposed on the oil outlet pipe. The exhaust side includes an exhaust pipe and an exhaust valve disposed on the exhaust pipe. The oil discharge side includes an oil discharge pipe and an oil discharge valve disposed on the oil discharge pipe. The air inlet side includes an air inlet pipe and an air inlet valve disposed on the air inlet pipe. The filter canister has an intake valve, with the oil inlet side located at the bottom, the exhaust side located on the top cover, the oil outlet side located on the upper side wall of the filter canister, the oil discharge side located on the lower side wall of the filter canister, and the air inlet side located on either the exhaust side or the oil outlet side. The oil inlet pipe, oil outlet pipe, exhaust pipe, oil discharge pipe, and air inlet pipe are all connected to the filter chamber. The filter element is disposed in the filter chamber and includes an oil inlet end and an oil outlet end. The oil inlet end is connected to the oil inlet pipe, and the oil outlet end is connected to the oil outlet pipe.