Sweeping device for double-flange liquid level meter

Abstract

The utility model relates to the field of oil and gas equipment liquid level metering, in particular to a sweeping device for a double-flange liquid level meter, which comprises a first cleaning rod and a second cleaning rod which are arranged in flanges, the first cleaning rod is rotatably connected with the second cleaning rod, the second cleaning rod is rotatably connected with the inner walls of the flanges, and the first cleaning rod is rotatably connected with the inner walls of the flanges. The connecting position of the first cleaning rod and the second cleaning rod is different from the connecting position of the second cleaning rod and the inner wall of the flange, and the first cleaning rod can rotate to drive the second cleaning rod to rotate in the flange. The first cleaning rod and the second cleaning rod are rotationally connected in the flange, impurities in the flange can be removed through rotation of the first cleaning rod and the second cleaning rod, the effect that the flange can be cleaned without being disassembled can be achieved, the problem that liquid level measurement is inaccurate due to the fact that a flange diaphragm is blocked by the impurities is solved, and the liquid level measurement accuracy is improved. And the purpose of improving the cleaning efficiency is also achieved.

Description

Technical Field

[0001] The utility model relates to the field of liquid level measurement of oil and gas equipment, and particularly relates to a flushing device for a double flange liquid level gauge. Background Art

[0002] In oil and gas field well sites, double flange liquid level gauges are commonly used in oil and gas equipment with gas-liquid separation functions and can measure the liquid level. However, during use, impurities in the oil and gas equipment can cause blockage of the flange diaphragm of the double flange liquid level gauge. After the flange diaphragm of the double flange liquid level gauge is blocked, problems such as inaccurate liquid level measurement and inability to display the liquid level will occur. Moreover, after blockage, problems such as inability to detect at any time, inability to directly clean impurities, and difficulty in cleaning the adhered impurities will further occur. Only by relieving pressure and completely disassembling the double flange liquid level gauge can cleaning be carried out, which affects the production progress and also poses great risks, and the operation is cumbersome. Therefore, there is an urgent need for a device that can perform cleaning operations without disassembling the double flange liquid level gauge. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the technical problem in the prior art that impurities cannot be directly cleaned, resulting in blockage of the flange diaphragm of the double flange liquid level gauge, and further causing inaccurate liquid level measurement, and to provide a flushing device for a double flange liquid level gauge.

[0004] The utility model provides a flushing device for a double flange liquid level gauge, which includes a first cleaning rod and a second cleaning rod arranged in the flange. The first cleaning rod and the second cleaning rod are rotationally connected, and the second cleaning rod is rotationally connected to the inner wall of the flange. The connection position between the first cleaning rod and the second cleaning rod is different from the connection position between the second cleaning rod and the inner wall of the flange. The rotation of the first cleaning rod can drive the second cleaning rod to rotate in the flange.

[0005] Compared with the prior art in which impurities cannot be directly cleaned in the double flange liquid level gauge, resulting in blockage of the flange diaphragm and further inaccurate liquid level measurement, in this application, a flushing device can be arranged in the flange to directly flush and remove the impurities in the flange. Specifically, a first cleaning rod and a second cleaning rod can be installed in the flange, and the first cleaning rod and the second cleaning rod are rotationally connected to each other and the second cleaning rod is rotationally connected to the inner wall of the flange, so that the first cleaning rod and the second cleaning rod can rotate in the flange, thereby removing the impurities in the flange, especially the impurities attached to the inner wall of the flange, so as to achieve the effect of cleaning the flange, avoiding the problem of inaccurate liquid level measurement caused by impurity blockage of the flange diaphragm. In addition, the cleaning process can be carried out without disassembling the flange, which also achieves the purpose of improving the cleaning efficiency.

[0006] Preferably, a plurality of through holes are formed in the side wall of the first cleaning rod, and the plurality of through holes communicate with the inner cavity of the first cleaning rod.

[0007] Preferably, the plurality of through holes are evenly arranged on the side wall of the first cleaning rod.

[0008] Preferably, a plurality of cleaning needles are provided on the second cleaning rod.

[0009] Preferably, the plurality of cleaning needles are evenly arranged along the axial direction of the second cleaning rod.

[0010] Preferably, the first cleaning rod and the second cleaning rod are connected by a first bearing.

[0011] Preferably, the second cleaning rod and the inner wall of the flange are connected by a second bearing.

[0012] Preferably, a handle is further included, and the handle is installed at one end of the first cleaning rod extending out of the flange.

[0013] Preferably, a connecting pipe communicating with the flange and connected to the bottom of the flange is further included.

[0014] Preferably, a water outlet valve installed on the connecting pipe is further included.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model provides a flushing device for a double-flange liquid level gauge. A flushing device can be arranged in the flange so as to directly flush and remove impurities in the flange. Specifically, a first cleaning rod and a second cleaning rod can be installed in the flange, and the first cleaning rod and the second cleaning rod, as well as the second cleaning rod and the inner wall of the flange, are rotationally connected, so that the first cleaning rod and the second cleaning rod can rotate in the flange, and further the impurities in the flange can be removed, especially the impurities adhering to the inner wall of the flange can be scraped off, thereby achieving the effect of cleaning the flange, avoiding the problem that the impurity blocks the flange diaphragm and causes inaccurate liquid level measurement, and in addition, the cleaning process can be carried out without disassembling the flange, and the purpose of improving the cleaning efficiency is also achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the flushing device for a double-flange liquid level gauge of the present utility model.

[0018] Figure 2 is a schematic diagram of the first cleaning rod of the flushing device for a double-flange liquid level gauge of the present utility model.

[0019] Figure 3 is a schematic diagram of the second cleaning rod of the flushing device for a double-flange liquid level gauge of the present utility model.

[0020] Figure 4 It is a schematic diagram of a double flange liquid level gauge.

[0021] Markings in the figure:

[0022] 1. First cleaning rod, 11. Through hole, 2. Second cleaning rod, 21. Cleaning needle, 3. Handle, 4. Connecting pipe, 5. Water outlet valve, 6. First bearing, 7. Second bearing, 8. Flange, 9. Transmitter, 10. Capillary tube, a. Container. Specific implementation manner

[0023] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. Any technology implemented based on the content of the present utility model belongs to the scope of the present utility model.

[0024] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms of the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the utility model product / device / equipment is usually used and placed. These terms of orientation or position relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0025] In addition, for terms such as "horizontal", "vertical", "hanging", "parallel", etc., it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present utility model.

[0026] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0027] In addition, in the description of the embodiments of the present utility model, "several", "multiple", and "a number of" represent at least two. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation where the number exceeds 9.

[0028] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, when the terms "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, and threaded connection. Such a connection can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0029] Embodiment

[0030] This embodiment provides a flushing device for a double flange liquid level gauge.

[0031] Figure 1 is a schematic structural diagram of the flushing device for a double flange liquid level gauge of the present utility model; Figure 2 is a schematic diagram of the first cleaning rod of the flushing device for a double flange liquid level gauge of the present utility model; Figure 3 is a schematic diagram of the second cleaning rod of the flushing device for a double flange liquid level gauge of the present utility model; Figure 4 is a schematic diagram of a double flange liquid level gauge.

[0032] As Figures 1 to 4 shown in, the flushing device for a double flange liquid level gauge described in this embodiment may include a first cleaning rod 1 and a second cleaning rod 2 provided in the flange 8. The first cleaning rod 1 and the second cleaning rod 2 are rotatably connected, and the second cleaning rod 2 and the inner wall of the flange 8 are rotatably connected. The first cleaning rod 1 can drive the second cleaning rod 2 to rotate together in the flange 8. Specifically, a through hole is opened on the side wall of the flange 8. The first cleaning rod 1 can extend into the flange 8 through the hole on the side wall of the flange 8, and one end of the first cleaning rod 1 is located outside the flange 8 and the other end is located inside the flange 8. The first cleaning rod 1 can be manually controlled to rotate, thereby driving the second cleaning rod 2 to rotate together to scrape the impurities in the flange 8.

[0033] Compared with the technical defect that the existing double-flange 8 liquid level gauge cannot directly clean impurities, resulting in blockage of the flange 8 diaphragm and inaccurate liquid level measurement, in this application, a flushing device can be set in the flange 8 to directly flush and remove the impurities in the flange 8. Specifically, a first cleaning rod 1 and a second cleaning rod 2 can be installed in the flange 8, and the first cleaning rod 1 and the second cleaning rod 2 are rotatably connected between them and between the second cleaning rod 2 and the inner wall of the flange 8, so that the first cleaning rod 1 and the second cleaning rod 2 can rotate in the flange 8, thereby removing the impurities in the flange 8, especially scraping the impurities attached to the inner wall of the flange 8, so as to achieve the effect of cleaning the flange 8, avoiding the problem of inaccurate liquid level measurement caused by impurity blockage of the flange 8 diaphragm. In addition, the cleaning process can be carried out without disassembling the flange 8, which also achieves the purpose of improving the cleaning efficiency.

[0034] Figure 4 Shown is a schematic diagram of an existing double-flange liquid level gauge. Among them, the two flanges 8 are arranged at intervals in the height direction of the container a. The two flanges 8 are respectively connected to the transmitter 9 through two capillary tubes 10. The liquid level can be measured by using the principle of liquid level height differential pressure. The liquid pressures in the two flanges 8 can be respectively transmitted to the transmitter 9 through their respective flange diaphragms and capillary tubes 10. The transmitter 9 can convert the received pressure difference into an electrical signal for liquid level value conversion.

[0035] In this embodiment, the flushing device for the double-flange liquid level gauge described in this embodiment may further include a handle 3 installed at one end of the first cleaning rod 1, and the operator can hold the handle 3 to drive the first cleaning rod 1.

[0036] Specifically, the handle 3 can be installed at the end of the first cleaning rod 1 outside the flange 8. The operator can hold the handle 3 to drive the first cleaning rod 1 to rotate, and then drive the second cleaning rod 2 to rotate in the flange 8 together, so as to realize the operation of removing impurities in the flange 8; however, the present invention is not limited to this. In addition to manually operating by holding the handle 3, the driving mode of the first cleaning rod 1 can also be driven by a power source (such as a motor, etc.) through mechanical transmission. The specific driving mode can be selected according to actual operation requirements, and the present invention does not make specific limitations on this.

[0037] In this embodiment, the flushing device for the double-flange liquid level gauge described in this embodiment may further include a connecting pipe 4 communicated with the flange 8.

[0038] Specifically, a connecting pipe 4 communicating with the flange 8 can be installed at the lower end of the flange 8. That is to say, the connecting pipe 4 can be used as the outlet end of the flange 8. The impurities scraped off by the rotation of the first cleaning rod 1 and the second cleaning rod 2 in the flange 8 can be mixed with the liquid in the flange 8 and then discharged from the flange 8 through the connecting pipe 4, so as to finally remove the impurities from the flange 8. However, the present invention is not limited to this. The outlet end of the flange 8 can also be a component with other structural forms except the connecting pipe 4. The specific structure of the outlet end can be selected according to actual operation requirements, and the present invention does not make specific limitations on this.

[0039] Optionally, the flushing device for the double flange liquid level gauge described in this embodiment may further include a water outlet valve 5 installed on the connecting pipe 4.

[0040] A water outlet valve 5 can be installed on the connecting pipe 4 to control the opening degree of the connecting pipe 4, and then the discharge of the liquid and impurities in the flange 8 can be controlled, and the discharge speed of the liquid and impurities in the flange 8 can also be controlled. Specifically, when the opening degree of the water outlet valve 5 is opened to the maximum, the discharge speed of the liquid and impurities in the flange 8 can also reach the maximum; correspondingly, as the opening degree of the water outlet valve 5 is gradually closed to the minimum, the discharge speed of the liquid and impurities in the flange 8 also decreases until the opening degree of the water outlet valve 5 is completely closed, and the liquid and impurities in the flange 8 can no longer be discharged from the flange 8; here, the water outlet valve 5 can be a needle valve, but the present invention is not limited to this. The specific form of the water outlet valve 5 can be arbitrarily selected according to actual needs, not limited to the needle valve, and the present invention does not make specific limitations on this.

[0041] Optionally, the first cleaning rod 1 and the second cleaning rod 2 can be connected through a first bearing 6.

[0042] The rotational connection between the first cleaning rod 1 and the second cleaning rod 2 can be realized by connecting the first bearing 6. Specifically, the first bearing 6 can be a universal bearing. The universal bearing can not limit the relative rotation direction and rotation angle between the first cleaning rod 1 and the second cleaning rod 2. The first cleaning rod 1 can rotate to any direction and angle during rotation, so that the first cleaning rod 1 can contact the inner wall of the flange 8 to the greatest extent during rotation, and thus the impurities attached to the flange 8 can be scraped off to the greatest extent; however, the present invention is not limited to this. The specific form of the first bearing 6 can be arbitrarily selected according to actual needs, not limited to the universal bearing, and the present invention does not make specific limitations on this.

[0043] Optionally, the second cleaning rod 2 and the inner wall of the flange 8 can be connected through a second bearing 7.

[0044] The rotational connection between the second cleaning rod 2 and the inner wall of the flange 8 can be achieved by connecting the second bearing 7. Specifically, the second bearing 7 can be a universal bearing, and the universal bearing can not limit the relative rotation direction and rotation angle between the second cleaning rod 2 and the inner wall of the flange 8. When the second cleaning rod 2 rotates, it can rotate to any direction and angle, so that the second cleaning rod 2 can contact the inner wall of the flange 8 to the greatest extent during rotation, and thus can scrape the impurities attached to the flange 8 to the greatest extent. However, the present invention is not limited thereto, and the specific form of the second bearing 7 can be arbitrarily selected according to actual needs, not limited to the universal bearing, and the present invention does not make specific limitations thereto.

[0045] In this embodiment, a plurality of through holes 11 are formed in the side wall of the first cleaning rod 1, and the plurality of through holes 11 communicate with the inner cavity of the first cleaning rod 1.

[0046] Specifically, the first cleaning rod 1 can be a hollow tubular structure, that is to say, the inner cavity of the first cleaning rod 1 can penetrate along the axial direction of the first cleaning rod 1. A plurality of through holes 11 can be formed in the side wall of the first cleaning rod 1, and the plurality of through holes 11 can all communicate with the inner cavity of the first cleaning rod 1. The first cleaning rod 1 can be connected to an external water source. An inlet (not shown in the figure) can be formed in the side wall of the first cleaning rod 1, and the inlet can communicate with the inner cavity of the first cleaning rod 1. The external water source can be connected to the inlet through a water pipe. Since the first cleaning rod 1 can rotate, the water pipe connected between the external water source and the inlet can be a flexible pipe, so that it can deform with the rotation of the first cleaning rod 1. The external water source can inject water into the first cleaning rod 1, and the water can be injected into the flange 8 from the inner cavity of the first cleaning rod 1 along the through holes 11, so as to clean the flange 8. The pressure of the water injected into the flange 8 from the first cleaning rod 1 can be adjusted at any time, as long as the cleaning function of the flange 8 can be realized. The process of water injection cleaning can also be carried out simultaneously with the rotation process of the first cleaning rod 1. The water can be sprayed to multiple positions in the flange 8 with the rotation of the first cleaning rod 1, so as to realize the cleaning of the flange 8 to the greatest extent. However, the present invention is not limited thereto, and the number of through holes 11 formed in the side wall of the first cleaning rod 1 can be selected according to actual needs, and the present invention does not make specific limitations thereto.

[0047] Optionally, the plurality of through holes 11 can be uniformly arranged on the side wall of the first cleaning rod 1.

[0048] The through holes 11 formed on the side wall of the first cleaning rod 1 can be evenly distributed on the side wall of the first cleaning rod 1. Specifically, the through holes 11 can be evenly distributed along the circumference and axial direction of the first cleaning rod 1, so that water can be sprayed in all directions along the through holes 11, thereby achieving the effect of cleaning all parts of the inner wall of the flange 8 to the greatest extent; however, the present invention is not limited to this, and the arrangement of the through holes 11 on the side wall of the first cleaning rod 1 can also be selected according to needs, and the present invention does not impose any specific limitation on this.

[0049] In this embodiment, a plurality of cleaning needles 21 may be provided on the second cleaning rod 2 .

[0050] A plurality of cleaning needles 21 can be installed on the second cleaning rod 2. The cleaning needles 21 can move in the flange 8 as the second cleaning rod 2 rotates, which can further improve the scraping effect of impurities on the inner wall of the flange 8. The material of the cleaning needles 21 can be selected from steel, that is, the cleaning needles 21 can be made of steel needles, and the steel needles can have sufficient strength and rigidity to scrape impurities on the inner wall of the flange 8; however, the present invention is not limited to this. The number and material of the cleaning needles 21 can also be arbitrarily selected and replaced according to actual needs, and the present invention does not make specific limitations on this.

[0051] Optionally, a plurality of cleaning needles 21 may be evenly distributed along the axial direction of the second cleaning rod 2 .

[0052] The multiple cleaning needles 21 on the second cleaning rod 2 can be evenly distributed along the axial direction of the second cleaning rod 2. Specifically, the cleaning needles 21 can be arranged perpendicular to the axial direction of the second cleaning rod 2, that is, the setting direction of each cleaning needle 21 can be arranged along the radial direction of the second cleaning rod 2, and the arrangement direction of the multiple cleaning needles 21 can be along the axial direction of the second cleaning rod 2 or along the circumferential direction of the second cleaning rod 2. The multiple cleaning needles 21 can be extended in all directions on the second cleaning rod 2, which can expand the scraping range of the cleaning needles 21, and can scrape impurities on the inner wall of the flange 8 to the greatest extent and achieve the maximum scraping effect; however, the present invention is not limited to this, and the layout of the cleaning needles 21 on the second cleaning rod 2 can also be selected according to needs, and the present invention does not make specific limitations on this.

[0053] It should be noted that the cleaning needle 21 can also be installed on the first cleaning rod 1, enabling the first cleaning rod 1 to have the functions of flushing and removing impurities simultaneously. Additionally, an axially penetrating inner cavity and a through hole that communicates with the inner cavity and penetrates the side wall of the second cleaning rod 2 can be provided on the second cleaning rod 2, also enabling the second cleaning rod 2 to have the functions of flushing and removing impurities simultaneously. After an axially penetrating inner cavity and a through hole that communicates with the inner cavity and penetrates the side wall of the second cleaning rod 2 are provided on the second cleaning rod 2, a hose can be connected between the inner cavity of the first cleaning rod 1 and the inner cavity of the second cleaning rod 2, enabling the inner cavity of the first cleaning rod 1 to communicate with the inner cavity of the second cleaning rod 2. Water can flow from the inner cavity of the first cleaning rod 1 into the inner cavity of the second cleaning rod 2, and the water can flow out along the through hole 11 on the first cleaning rod 1 and the through hole on the second cleaning rod 2 simultaneously to perform a flushing operation.

[0054] The working process of the flushing and sweeping device for a double-flange liquid level gauge described in this embodiment is described in detail as follows:

[0055] When it is necessary to remove impurities in the flange 8, water can be injected into the inner cavity of the first cleaning rod 1. At the same time, the first cleaning rod 1 can be rotated by controlling the handle 3, and the second cleaning rod 2 can be driven to rotate in the flange 8 together. While using the water sprayed out along the through hole 11 to remove impurities at various parts of the inner wall of the flange 8, the cleaning needles 21 on the first cleaning rod 1 and the second cleaning rod 2 can also be used to scrape the impurities at various parts of the inner wall of the flange 8. The effect of removing impurities at various parts of the inner wall of the flange 8 can be achieved to the greatest extent. The impurities removed from the inner wall of the flange 8 can be mixed with the water. When the amount of water and impurities in the flange 8 is mixed to a certain level, the water outlet valve 5 at the lower end of the flange 8 can be opened, so that the water in the flange 8 and the impurities mixed in the water can be discharged together along the water outlet valve 5, and the purpose of finally cleaning the flange 8 can be achieved.

[0056] In summary, the flushing and sweeping device for a double-flange liquid level gauge of the present utility model can be arranged in the flange, so that the impurities in the flange can be directly flushed and removed. Specifically, a first cleaning rod and a second cleaning rod can be installed in the flange, and the first cleaning rod and the second cleaning rod are rotationally connected between them and between the second cleaning rod and the inner wall of the flange, enabling the first cleaning rod and the second cleaning rod to rotate in the flange, thereby removing the impurities in the flange, especially scraping the impurities attached to the inner wall of the flange, so as to achieve the effect of cleaning the flange, avoiding the problem of inaccurate liquid level measurement caused by impurity blockage of the flange diaphragm. In addition, the cleaning process can be carried out without disassembling the flange, and the purpose of improving the cleaning efficiency is also achieved.

[0057] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A flushing device for a double-flange liquid level gauge, characterized in that It includes a first cleaning rod (1) and a second cleaning rod (2). The first cleaning rod (1) and the second cleaning rod (2) are rotatably connected. The second cleaning rod (2) and the inner wall of the flange (8) are rotatably connected. The connection position between the first cleaning rod (1) and the second cleaning rod (2) is different from the connection position between the second cleaning rod (2) and the inner wall of the flange (8). Rotation of the first cleaning rod (1) can drive the second cleaning rod (2) to rotate in the flange (8).

2. The purging device for a double-flange liquid level gauge according to claim 1, characterized in that, The first cleaning rod (1) is provided with an axially penetrating inner cavity, and a plurality of through holes (11) are formed in the side wall of the first cleaning rod (1). The plurality of through holes (11) communicate with the inner cavity of the first cleaning rod (1).

3. The purging device for a double flange liquid level gauge according to claim 2, characterized in that, The plurality of through holes (11) are uniformly arranged on the side wall of the first cleaning rod (1).

4. The purging device for a double flange liquid level gauge according to claim 1, characterized in that, A plurality of cleaning needles (21) are provided on the second cleaning rod (2).

5. The purging device for a double-flange liquid level gauge according to claim 4, characterized in that, The plurality of cleaning needles (21) are uniformly arranged along the axial direction of the second cleaning rod (2).

6. The purging device for a double-flange liquid level gauge according to claim 1, characterized in that, The first cleaning rod (1) and the second cleaning rod (2) are connected by a first bearing (6).

7. The purging device for a double-flange liquid level gauge according to claim 1, characterized in that, The second cleaning rod (2) and the inner wall of the flange (8) are connected by a second bearing (7).

8. The purging device for a double-flange liquid level gauge according to claim 1, characterized in that, It further includes a handle (3), and the handle (3) is installed at one end of the first cleaning rod (1) extending out of the flange (8).

9. The purging device for a double flange liquid level gauge according to any one of claims 1 to 8, characterized in that, It further includes a connecting pipe (4) that communicates with the flange (8) and is connected to the bottom of the flange (8).

10. The purging device for a double-flange liquid level gauge according to claim 9, characterized in that, It further includes a water outlet valve (5) installed on the connecting pipe (4).

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