Device capable of observing oil discharge quantity and duplex oil filter

Abstract

The utility model discloses a device capable of observing the oil discharge amount and a duplex oil filter, and relates to the technical field of steam turbines, the device capable of observing the oil discharge amount comprises a transparent observation pipe, two pipe connectors and at least one locking assembly; the observation tube is arranged between the two tube connectors, and two ends of the observation tube are respectively communicated with the tube connectors; the at least one locking assembly is connected between the two pipe connectors and used for providing locking acting force for the two pipe connectors to be close to each other, so that the two pipe connectors clamp and fix the observation pipe. The amount of flowing oil can be clearly observed through the transparent observation pipe, so that whether the filter with the core to be replaced is effectively isolated or not can be accurately judged; the two ends of the observation pipe are connected with the two pipe connectors, so that the device can be conveniently connected into a pipeline, and installation is more convenient; and the whole structure is simple, the manufacturing cost is low, and subsequent disassembly and maintenance are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of steam turbines, and in particular to a device capable of observing oil discharge volume and a double oil filter. Background Art

[0002] The duplex oil filter is assembled by two oil filters and a switching valve. It is used in the medium pressure pipeline or return oil pipeline of the hydraulic system. Its main function is to filter impurities and pollutants in the turbine lubricating oil to maintain the cleanliness of the oil and ensure the normal operation of the turbine.

[0003] See Figure 1 During the operation of the steam turbine, when the front and rear pressure difference on the operating side of the double oil filter exceeds the alarm safety value set by the transmitter (502), it is necessary to switch the double oil filter. After switching to the standby side, the filter element (501) on the side with high pressure difference that has been stopped is replaced. The specific switching process is as follows:

[0004] 1) Observe the flow direction indication of the switching valve to confirm the spare filter (200);

[0005] 2) Open the balancing valve (304) and the exhaust valve (303) of the spare filter (200) (the lower drain valve (302) can be opened as needed), and close all of them when the fluid overflows;

[0006] 3) Turn the switching valve handwheel (404) (handle) to switch the flow to the standby filter (200);

[0007] 4) Venting the spare filter (200) again;

[0008] 5) Open the exhaust valve (303) and the upper drain valve (301) of the filter element (100) to be replaced (the lower drain valve (302) can be opened as needed) to drain the fluid;

[0009] 6) Remove the upper flange bolts (402) of the filter element to be replaced (100) and then remove the top cover (401);

[0010] 7) Replace the filter element (501) in sequence (take one and install one);

[0011] 8) Check the flange gasket (403) and replace it if it fails;

[0012] 9) Close the upper drain valve (301) of the filter element to be replaced (100);

[0013] 10) Move the top cover back to its original position and tighten the bolts to ensure a reliable seal;

[0014] 11) Open the exhaust valve (303) and the balancing valve (304) of the filter element to be replaced (100), and close them all when the fluid overflows.

[0015] However, the exhaust pipe and the outlet pipe of the upper drain valve of the existing duplex oil filter are directly connected to the main lubricating oil tank. This makes it impossible to observe the amount of oil discharged from the exhaust pipe or the upper drain valve. When performing a filter element replacement, it is impossible to accurately determine whether the fluid in step 5) has been completely drained, nor is it possible to accurately determine whether the filter element being replaced is effectively isolated. If the oil in the filter element being replaced is mistakenly determined to be completely drained, proceeding to step 6) will cause the filter element to leak, and even the serious consequence of forced unit shutdown due to excessive oil leakage. Therefore, a solution to this problem is urgently needed. Utility Model Content

[0016] In view of this, the purpose of this application is to provide a device and a double oil filter that can observe the oil discharge volume, so as to accurately determine whether the filter to be replaced is effectively isolated by observing the oil discharge volume.

[0017] To achieve the above technical objectives, the present application provides a device for observing oil discharge volume, comprising a transparent observation tube, two pipe connectors, and at least one locking assembly;

[0018] The observation tube is arranged between the two pipe connectors, and both ends are connected to the pipe connectors respectively;

[0019] At least one locking assembly is connected between the two pipe connectors to provide a locking force to bring the two pipe connectors closer to each other, so that the two pipe connectors clamp and fix the observation tube.

[0020] Furthermore, an annular groove is provided on the pipe connector;

[0021] The annular groove is for the end of the observation tube to be inserted into.

[0022] Furthermore, a sealing ring is installed in the annular groove;

[0023] The pipe connector and the observation tube squeeze the sealing ring.

[0024] Furthermore, the observation tube is made of transparent glass material.

[0025] Furthermore, the outer peripheral surface of the pipe connector is provided with a lug portion;

[0026] The locking assembly is connected between two opposite lug portions of the two pipe connectors.

[0027] Furthermore, the locking assembly includes a stud bolt and two first locking nuts;

[0028] The lug portion is provided with a through hole for the threaded section of the stud bolt to movably pass through;

[0029] The two first locking nuts are respectively sleeved on the two threaded sections of the stud bolt, and contact and abut against the lug portions in a one-to-one correspondence, so as to provide a locking force for bringing the two pipe connectors closer to each other.

[0030] Furthermore, the locking assembly further includes two second locking nuts;

[0031] The two second locking nuts are respectively sleeved on the two threaded sections of the stud bolt and contact and abut against the lug portions in a one-to-one correspondence;

[0032] The first locking nut and the second locking nut located on the same side are clamped with the lug portion.

[0033] Furthermore, a gasket is provided between the first locking nut and the lug portion, and between the second locking nut and the lug portion.

[0034] Furthermore, there are three locking assemblies, which are evenly distributed around the circumference of the observation tube.

[0035] The present application also discloses a double oil filter, comprising an oil filter body, wherein the exhaust pipe or upper sewage pipe of the oil filter body is connected to the device for observing the oil discharge amount.

[0036] It can be seen from the above technical solutions that the device for observing the oil discharge volume designed in the present application can clearly observe the amount of oil flowing through the transparent observation tube, so as to accurately judge whether the filter element to be replaced is effectively isolated; and the two ends of the observation tube are connected to two pipe connectors, which facilitates the connection of the device to the pipeline and makes installation more convenient; furthermore, the locking assembly is used to provide a locking force for the two pipe connectors to approach each other, so that the two pipe connectors can be clamped to fix the observation tube to achieve connection and fixation with each other. The overall structure is simple, the production cost is low, and it is convenient for subsequent disassembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 This is a schematic structural diagram of the existing duplex oil filter provided in this application;

[0039] Figure 2 This is a schematic diagram of the structure of a device for observing oil discharge provided in this application;

[0040] Figure 3 for Figure 2 A magnified diagram of position A in the middle;

[0041] In the figure: 1. Observation tube; 2. Pipe connector; 21. Lug; 22. Through hole; 23. Annular groove; 3. Locking assembly; 31. Stud bolt; 32. First locking nut; 33. Second locking nut; 34. Gasket; 4. Sealing ring. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions of the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the embodiments of the present application.

[0043] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0044] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0045] The embodiments of the present application disclose a device capable of observing oil discharge volume and a double oil filter.

[0046] See also Figure 2 An embodiment of a device for observing oil discharge volume provided in an embodiment of the present application includes:

[0047] A transparent observation tube 1, two tube connectors 2 and at least one locking assembly 3.

[0048] An observation tube 1 is positioned between two pipe connectors 2, with both ends connected to the connectors 2. The connectors 2 can be conventional pipe joints, such as threaded joints, which connect to the pipeline via a threaded connection, though this is not a specific limitation. Through the transparent observation tube 1, the amount of oil flowing through can be clearly observed, allowing for accurate judgment of the effectiveness of the filter element being replaced. The connection of the two ends of the observation tube 1 to the two pipe connectors 2 facilitates connection to the pipeline, making installation more convenient.

[0049] At least one locking assembly 3 is connected between the two pipe connectors 2 to provide a locking force to bring the two pipe connectors 2 closer together, thereby clamping and securing the observation tube 1. The locking assembly 3 provides a locking force to bring the two pipe connectors 2 closer together, thereby clamping and securing the observation tube 1. This design offers a simple structure, low manufacturing cost, and facilitates subsequent disassembly and maintenance.

[0050] The above is the first embodiment of a device for observing the amount of oil discharged provided by the embodiment of the present application. The following is the second embodiment of a device for observing the amount of oil discharged provided by the embodiment of the present application. For details, please refer to Figure 2 as well as Figure 3 .

[0051] Based on the solution of the above embodiment 1:

[0052] Furthermore, if Figure 3 As shown, the pipe connector 2 is provided with an annular groove 23 for the end of the observation tube 1 to be inserted into.

[0053] When the end of the sight tube 1 fits into the annular groove 23, it forms a nested fit. This fit ensures a tighter and more secure connection between the pipe connector 2 and the sight tube 1. Furthermore, the presence of the annular groove 23 limits radial movement of the sight tube 1, preventing it from shaking or shifting when subjected to external forces. This ensures that the sight tube 1 remains in its correct position, regardless of fluid shock and vibration during normal operation of the piping system or accidental collisions during installation and maintenance.

[0054] Furthermore, if Figure 3 As shown, a sealing ring 4 is installed in the annular groove 23 , and the pipe connector 2 and the observation tube 1 squeeze the sealing ring 4 .

[0055] When the end of sight tube 1 engages annular groove 23, the pipe connector 2 and sight tube 1 compress the sealing ring 4. This compressive action causes the sealing ring 4 to elastically deform, and its originally circular cross-section gradually flattens under the pressure, thereby filling the gap between the pipe connector 2 and sight tube 1. According to Pascal's law, in a sealing system, the pressure applied to the sealing ring 4 is evenly transmitted across the entire sealing interface, ensuring sufficient sealing force at the contact surfaces between the sealing ring 4, the pipe connector 2, and the sight tube 1.

[0056] The sealed connection achieved by squeezing the sealing ring 4 greatly improves the sealing between the pipe connector 2 and the observation tube 1.

[0057] Furthermore, the observation tube 1 is made of transparent glass material.

[0058] One of the most significant advantages of using transparent glass to manufacture the observation tube 1 is its exceptionally high light transmittance. This allows for clear observation of the flow of both liquid and gaseous media within the pipe during operation. Furthermore, transparent glass exhibits excellent high-temperature resistance, providing enhanced operational stability.

[0059] Furthermore, in order to facilitate the installation of the locking assembly 3 , a lug portion 21 is provided on the outer circumferential surface of each pipe connector 2 , and the locking assembly 3 is connected between two opposite lug portions 21 of the two pipe connectors 2 .

[0060] The lugs 21 provided on the outer circumference of the pipe connector 2 provide a clear and precise installation location for the locking assembly 3. When installing the locking assembly 3, the operator can quickly locate the lugs 21 and perform the corresponding connection operations. Furthermore, the presence of the lugs 21 increases the overall structural rigidity of the pipe connector 2. Compared to smooth pipe connectors without lugs 21, designs with lugs 21 are less likely to deform when subjected to external forces.

[0061] Furthermore, the locking assembly 3 includes a stud bolt 31 and two first locking nuts 32; a through hole 22 is provided on the lug portion 21 for the threaded section of the stud bolt 31 to move through; the two first locking nuts 32 are respectively sleeved on the two threaded sections of the stud bolt 31, and are in contact and abutment with the lug portion 21 one by one, so as to provide a locking force for the two pipe connectors 2 to approach each other.

[0062] When the two pipe connectors 2 need to be locked and fixed to clamp the observation tube 1, first pass the stud bolt 31 through the through hole 22 of the lug portion 21 of the two pipe connectors 2. Then, screw the two first locking nuts 32 onto the two threaded sections of the stud bolt 31 respectively.

[0063] As the two first locking nuts 32 are screwed, the nuts will gradually approach the lugs 21 along the threaded sections. Since the nuts and the lugs 21 are in contact with each other, an axial thrust will be generated on the lugs 21 as the nuts are screwed in.

[0064] Because the stud bolts 31 penetrate the lugs 21 of the two pipe connectors 2, the thrusts exerted by the two first locking nuts 32 on their corresponding lugs 21 are in opposite directions. This forces the two pipe connectors 2 toward each other, generating a locking force that secures the observation tube 1. In this way, the locking assembly 3 ensures that the two pipe connectors 2 firmly hold the observation tube 1.

[0065] Furthermore, the locking assembly 3 also includes two second locking nuts 3; the two second locking nuts 3 are respectively sleeved on the two threaded sections of the stud bolt 31, and are in contact and abutment with the lug portion 21 one by one; the first locking nut 32 and the second locking nut 3 located on the same side form a clamp with the lug portion 21.

[0066] When the first locking nut 32 and the second locking nut 3 are respectively located on both sides of the lug portion 21 and clamped therewith, a double fixation of the lug portion 21 is achieved. This double clamping structure greatly enhances the stability of the connection between the stud bolt 31 and the lug portion 21.

[0067] The two second locking nuts 3 cooperate with the first locking nut 32 to more evenly distribute force across the lug 21 and the entire connection structure. During tightening, the first and second locking nuts 32 and 3 apply pressure from both sides of the lug 21, ensuring a uniform force distribution across the lug 21. This not only reduces the possibility of localized stress concentration but also ensures a more even clamping force between the pipe connectors 2 on the sight tube 1, preventing damage to the sight tube 1 or poor sealing due to uneven force distribution.

[0068] Furthermore, since there are two locking nuts on either side of the lug 21, precise control of the clamping force of the pipe connector 2 can be achieved by adjusting the tightening degree of the first locking nut 32 and the second locking nut 3 separately. During installation, the operator can initially tighten the first locking nut 32 to initially close the pipe connector 2 and exert a certain clamping force on the observation tube 1, and then fine-tune the second locking nut 3 to further accurately adjust the clamping force to achieve the best sealing and fixing effect.

[0069] Furthermore, washers 34 are provided between the first locking nut 32 and the lug portion 21 , and between the second locking nut 3 and the lug portion 21 .

[0070] The washer 34 can prevent the first locking nut 32 and the second locking nut 3 from causing wear and scratches to the lug portion 21 during the tightening and loosening process. At the same time, the washer 34 can play a role in buffering and shock absorption when subjected to vibration or impact.

[0071] Furthermore, there are three locking assemblies 3 evenly distributed around the circumference of the observation tube 1. These three locking assemblies 3 are evenly distributed around the circumference of the observation tube 1, allowing them to apply locking forces to the tube connector 2 from different directions, ensuring that the observation tube 1 is subjected to uniform clamping force at all points along its circumference. This uniform force distribution effectively prevents deformation, cracking, or displacement of the observation tube 1 due to uneven force.

[0072] The present application also discloses a double oil filter, comprising an oil filter body, an exhaust pipe or an upper drain pipe of the oil filter body connected to a device for observing the amount of oil discharged. Figure 1 The pipe connected to the middle exhaust valve 303, and the upper sewage pipe is Figure 1 The pipe connected to the upper sewage valve.

[0073] The above is a detailed introduction to the device for observing the oil discharge volume and the double oil filter provided by the present application. For those skilled in the art, based on the ideas of the embodiments of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. A device for observing oil discharge volume, characterized in that: It comprises a transparent observation tube (1), two tube connectors (2), and at least one locking assembly (3); The observation tube (1) is arranged between the two pipe connectors (2), and both ends are connected to the pipe connectors (2) respectively; At least one of the locking components (3) is connected between the two pipe connectors (2) and is used to provide a locking force that brings the two pipe connectors (2) closer to each other, so that the two pipe connectors (2) clamp and fix the observation tube (1).

2. The device for observing oil discharge according to claim 1, characterized in that: The pipe connector (2) is provided with an annular groove (23); The annular groove (23) is for the end of the observation tube (1) to be inserted into.

3. The device for observing the amount of oil discharged according to claim 2, characterized in that: A sealing ring (4) is installed in the annular groove (23); The pipe connector (2) and the observation tube (1) squeeze the sealing ring (4).

4. The device for observing oil discharge according to claim 1, characterized in that: The observation tube (1) is made of transparent glass material.

5. The device for observing oil discharge according to claim 1, characterized in that: The outer peripheral surface of the pipe connector (2) is provided with a lug portion (21); The locking assembly (3) is connected between the two opposite lug portions (21) of the two pipe connectors (2).

6. The device for observing the amount of oil discharged according to claim 5, characterized in that: The locking assembly (3) comprises a stud bolt (31) and two first locking nuts (32); The lug portion (21) is provided with a through hole (22) for the threaded section of the stud bolt (31) to movably pass through; The two first locking nuts (32) are respectively sleeved on the two threaded sections of the stud bolt (31), and contact and abut against the lug portions (21) in a one-to-one correspondence, so as to provide a locking force for bringing the two pipe connectors (2) closer to each other.

7. The device for observing the amount of oil discharged according to claim 6, characterized in that: The locking assembly (3) further includes two second locking nuts (33); The two second locking nuts (33) are respectively sleeved on the two threaded sections of the stud bolt (31), and contact and abut against the lug portion (21) in a one-to-one correspondence; The first locking nut (32) and the second locking nut (33) located on the same side are clamped with the lug portion (21).

8. The device for observing the amount of oil discharged according to claim 7, characterized in that: Washers (34) are provided between the first locking nut (32) and the lug portion (21), and between the second locking nut (33) and the lug portion (21).

9. The device for observing oil discharge according to claim 1, characterized in that: There are three locking assemblies (3) evenly distributed around the circumference of the observation tube (1).

10. Duplex oil filter, characterized in that: It comprises an oil filter body, the exhaust pipe or upper sewage pipe of the oil filter body is connected to the device for observing the oil discharge amount as described in any one of claims 1 to 9.

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