Damper assembly and damper cleaning method

Abstract

The present application relates to a kind of damper assembly and damper cleaning method, damper assembly includes damper and gas source, damper includes body, piston and control valve, body is provided with containing cavity, piston is partially inserted into containing cavity and containing cavity is divided into first chamber and second chamber, control valve is embedded on piston and is arranged in containing cavity, control valve is used to make first chamber and second chamber communicate or independent of each other, first inlet is arranged on body and communicated with first chamber, and second oil outlet is arranged and communicated with second chamber;Gas source is provided with compressed gas, gas source is configured to be communicated with first inlet, to make compressed gas flow out in turn through first inlet, first chamber, control valve, second chamber and second oil outlet. By the oil dirt of the guide structure of control valve being washed by compressed gas, the body of damper does not need to be disassembled, the intensity of staff is reduced, the efficiency of scale removal is improved, and maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of damper cleaning, in particular to a damper assembly and a damper cleaning method. BACKGROUND

[0002] The hydraulic damper is a vibration damping device which is extremely sensitive to the moving speed of the supported equipment, and is widely used in pipelines and equipment of nuclear power plants, thermal power plants, chemical plants and steel plants. The hydraulic damper includes a body, a piston and a control valve installed on the piston. Oil dirt is formed in the body under the long-term operation and influence of hydraulic oil. The internal flow channel of the control valve is complex, and part of the oil dirt is deposited on the guide structure of the control valve, which affects the action process of the control valve and further affects the work of the hydraulic damper. The existing control valve is installed in the body and cannot be removed and cleaned. If the control valve cannot be closed, the function of the damper is lost, which affects the safety performance of the nuclear power plant. The hydraulic damper can only be replaced, and the maintenance cost is high. SUMMARY

[0003] Therefore, it is necessary to provide a damper assembly for cleaning the control valve of the damper.

[0004] A damper assembly comprises:

[0005] The damper comprises a body, a piston and a control valve. The body is provided with a containing cavity. The piston partially extends into the containing cavity to divide the containing cavity into a first chamber and a second chamber. The control valve is embedded on the piston and arranged in the containing cavity. The control valve is used to communicate or mutually isolate the first chamber and the second chamber. The body is provided with a first air inlet communicating with the first chamber and a second oil outlet communicating with the second chamber.

[0006] A gas source is arranged in the gas source and is configured to communicate with the first air inlet, so that the compressed gas flows out through the first air inlet, the first chamber, the control valve, the second chamber and the second oil outlet in sequence.

[0007] In one embodiment, the body is provided with a second air inlet communicating with the second chamber and a first oil outlet communicating with the first chamber. The gas source is configured to communicate with the second air inlet, so that the compressed gas flows out through the second air inlet, the second chamber, the control valve, the first chamber and the first oil outlet in sequence.

[0008] In one of the embodiments, the body is provided with a third chamber in communication with the second chamber, the piston partially extends into the third chamber, the control valve is in communication with the third chamber through the piston, and the body is further provided with a third oil outlet in communication with the third chamber.

[0009] The gas source is configured to communicate with the first gas inlet and the second gas inlet, so that the compressed gas enters the control valve through the first gas inlet and the second gas inlet, and then flows out through the control valve, the piston, the third chamber and the third oil outlet in sequence.

[0010] In one of the embodiments, the damper assembly further comprises a first gas inlet branch and a second gas inlet branch, the gas source communicates with the first gas inlet through the first gas inlet branch, and the gas source communicates with the second gas inlet through the second gas inlet branch, the first gas inlet branch is provided with a first on-off valve for controlling the communication or disconnection of the first gas inlet branch, and the second gas inlet branch is provided with a second on-off valve for controlling the communication or disconnection of the second gas inlet branch.

[0011] In one of the embodiments, the damper assembly further comprises a gas inlet main pipe in communication with the gas source, the first gas inlet branch and the second gas inlet branch are both in communication with the gas inlet main pipe, and the gas inlet main pipe is provided with a pressure reducing valve for adjusting the delivery pressure of the compressed gas in the gas inlet main pipe.

[0012] In one of the embodiments, the damper assembly further comprises an oil and gas collection tank in communication with the first oil outlet, the second oil outlet and the third oil outlet.

[0013] The application further provides a damper cleaning method for cleaning any of the above-mentioned dampers, which comprises the following steps:

[0014] S1, opening the first gas inlet and the second oil outlet, and connecting the gas source with the first gas inlet;

[0015] S2, opening the gas source, and the compressed gas in the gas source flows out through the first gas inlet, the first chamber, the control valve, the second chamber and the second oil outlet in sequence, so that the compressed gas flushes the oil dirt in the control valve in the first direction.

[0016] In one of the embodiments, the body is provided with a second gas inlet in communication with the second chamber, and a first oil outlet in communication with the first chamber, and the method further comprises the following steps after step S2:

[0017] S3, opening the second gas inlet and the first oil outlet, blocking the first gas inlet and the second oil outlet, and connecting the gas source with the second gas inlet;

[0018] S4, opening the gas source, and the compressed gas in the gas source flows out through the second gas inlet, the second chamber, the control valve, the first chamber and the first oil outlet in sequence, so that the compressed gas flushes the oil dirt in the control valve in a second direction, wherein the first direction and the second direction are opposite.

[0019] In one of the embodiments, the body is provided with a third chamber communicated with the second chamber, the piston part extends into the third chamber, the control valve is communicated with the third chamber through the piston, and the body is further provided with a third oil outlet communicated with the third chamber, and after step S4, the method further comprises the following steps:

[0020] S5, opening the first gas inlet and the third oil outlet, blocking the first oil outlet and the second oil outlet, and connecting the gas source with the first gas inlet and the second gas inlet;

[0021] S6, opening the gas source, and the compressed gas in the gas source flows into the control valve through the first gas inlet and the second gas inlet, so that the compressed gas flushes the control valve in the first direction and the second direction at the same time, and the oil-gas mixture formed after the flushing flows out through the piston, the third chamber and the third oil outlet in sequence.

[0022] In one of the embodiments, before S1, S0 is further included, and the hydraulic oil in the containing chamber of the body is discharged.

[0023] The beneficial effects of the present application are as follows:

[0024] The damper assembly is characterized in that the piston is arranged in the accommodating cavity of the body, the accommodating cavity is divided into a first chamber and a second chamber, the control valve is arranged on the piston and extends into the accommodating cavity, the control valve is used for connecting the first chamber and the second chamber to allow the hydraulic oil to flow between the first chamber and the second chamber, or cutting off the first chamber and the second chamber to limit the reciprocating flow of the hydraulic oil between the first chamber and the second chamber. The compressed gas in the gas source is communicated with the first gas inlet arranged on the body, and sequentially flows out through the first gas inlet, the first chamber, the control valve, the second chamber and the second oil outlet. The compressed gas passes through the control valve, thereby flushing the oil dirt on the guide structure of the control valve and generating an oil-gas mixture with the oil dirt, and finally the oil-gas mixture is discharged through the second oil outlet. The damper assembly provided by the application can flush the oil dirt on the guide structure of the control valve by using the compressed gas, without disassembling the body of the damper, thereby reducing the strength of the staff in removing the oil dirt, improving the efficiency of removing the oil dirt, reducing the maintenance cost, reducing the occurrence of the situation that the oil dirt affects the action process of the control valve, and reducing the occurrence of the situation that the oil dirt affects the work of the hydraulic damper.

[0025] The damper cleaning method is characterized in that the accommodating cavity of the damper and the control valve arranged on the piston in the accommodating cavity are cleaned. First, the first gas inlet and the second oil outlet are opened, the gas source is communicated with the first gas inlet arranged on the body, and then the gas source is opened. The compressed gas in the gas source sequentially flows out through the first gas inlet, the first chamber, the control valve, the second chamber and the second oil outlet. The compressed gas passes through the accommodating cavity, thereby flushing the oil dirt on the cavity wall. Moreover, the compressed gas passes through the control valve, thereby flushing the oil dirt on the guide structure of the control valve and generating an oil-gas mixture with the oil dirt, and finally the oil-gas mixture is discharged through the second oil outlet. The damper cleaning method provided by the application can flush the oil dirt on the guide structure of the control valve by using the compressed gas, without disassembling the body of the damper, thereby reducing the strength of the staff in removing the oil dirt and improving the efficiency of removing the oil dirt. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structural schematic view of the control valve provided for the damper assembly embodiment of the application;

[0027] Figure 2 A structural schematic view of the damper assembly provided for the damper assembly embodiment of the application;

[0028] Figure 3 A structural schematic view of the compressed gas flushing the control valve in the first direction provided for the damper cleaning method embodiment of the application;

[0029] Figure 4 A structural schematic view of the compressed gas flushing the control valve in the second direction provided for the damper cleaning method embodiment of the application;

[0030] Figure 5The structure schematic view of the compressed gas provided by the damper cleaning method embodiment of the present application flushes the control valve along the first direction and the second direction simultaneously.

[0031] In the figure:

[0032] 100, damper; 110, body; 111, first chamber; 112, second chamber; 113, third chamber; 120, piston; 121, passage; 130, control valve; 131, first valve core; 132, second valve core; 140, first air inlet; 150, second air inlet; 160, first oil outlet; 170, second oil outlet; 180, third oil outlet;

[0033] 200, gas source; 210, air inlet joint;

[0034] 300, first air inlet branch pipe; 310, first switch valve;

[0035] 400, second air inlet branch pipe; 410, second switch valve;

[0036] 500, air inlet main pipe; 510, pressure reducing valve; 520, gas filter; 530, pressure gauge;

[0037] 600, first oil outlet branch pipe; 610, third switch valve;

[0038] 700, second oil outlet branch pipe; 710, fourth switch valve;

[0039] 800, third oil outlet branch pipe; 810, fifth switch valve;

[0040] 900, oil outlet main pipe; 910, oil-gas collection tank; 920, oil-gas separator; 930, muffler. DETAILED DESCRIPTION

[0041] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below in combination with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0043] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0044] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0046] It is to be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar terms as used herein are for the purpose of description only and are not intended to be limiting.

[0047] The embodiment of the present application provides a damper assembly, which comprises Figures 1 to 3 As shown in the figure, the damper assembly comprises a damper 100 and a gas source 200, the damper 100 comprises a body 110, a piston 120 and a control valve 130, the body 110 is provided with a containing cavity, the piston 120 partially extends into the containing cavity to divide the containing cavity into a first chamber 111 and a second chamber 112, the control valve 130 is embedded on the piston 120 and arranged in the containing cavity, the control valve 130 is used for connecting or isolating the first chamber 111 and the second chamber 112, the body 110 is provided with a first air inlet 140 connected with the first chamber 111 and a second oil outlet 170 connected with the second chamber 112; the gas source 200 is provided with compressed gas, the gas source 200 is configured to be connected with the first air inlet 140, so that the compressed gas flows out through the first air inlet 140, the first chamber 111, the control valve 130, the second chamber 112 and the second oil outlet 170 in sequence, and specific reference is made to the arrow flow direction in the figure. Figure 3

[0048] The damper assembly, the piston 120 is arranged in the containing cavity of the body 110 to divide the containing cavity into the first chamber 111 and the second chamber 112, the control valve 130 is embedded on the piston 120 and extends into the containing cavity, the control valve 130 is used for connecting the first chamber 111 and the second chamber 112 to make the hydraulic oil flow between the first chamber 111 and the second chamber 112, or cutting off the first chamber 111 and the second chamber 112 to limit the reciprocating flow of the hydraulic oil between the first chamber 111 and the second chamber 112. The gas source 200 is connected with the first air inlet 140 arranged on the body 110, the compressed gas in the gas source 200 flows out through the first air inlet 140, the first chamber 111, the control valve 130, the second chamber 112 and the second oil outlet 170 in sequence, the compressed gas passes through the control valve 130, so as to flush the oil dirt on the guide structure of the control valve 130, and generate an oil gas mixture with the oil dirt, and finally the oil gas mixture is discharged through the second oil outlet 170.

[0049] ​The damper assembly provided by the embodiment of the present application can flush away the oil dirt on the guide structure of the control valve 130 by compressed gas, without the need to disassemble the body 110 of the damper 100, thereby reducing the strength of the staff in removing the oil dirt, improving the efficiency of removing the oil dirt, reducing the maintenance cost, reducing the occurrence of the situation that the oil dirt affects the action process of the control valve 130, and reducing the occurrence of the situation that the oil dirt affects the working of the hydraulic damper 100.

[0050] Specifically, as shown in Figures 1 to 3 , the control valve 130 is installed on the piston 120, and the axis direction of the control valve 130 is parallel to the axis direction of the piston 120, the control valve 130 includes a first valve core 131 and a second valve core 132, and the damper 100 has a tension locking state and a compression locking state. Figure 1 When the damper 100 is in the tension locking state, the hydraulic oil flows in the first direction, the hydraulic oil pushes the first valve core 131 to move from left to right (as shown in Figure 1 from left to right) and finally closes to block the flow of the hydraulic oil, and when the external load disappears, the first valve core 131 opens under the action of the reset spring of the control valve 130. When the damper 100 is in the compression locking state, the hydraulic oil flows in the second direction, the hydraulic oil pushes the second valve core 132 to move from right to left (as shown in from right to left) and finally closes to block the flow of the hydraulic oil, and when the external load disappears, the second valve core 132 opens under the action of the reset spring of the control valve 130. The hydraulic oil inside the hydraulic damper 100 will produce oil dirt under natural aging or mixing with air, and some oil dirt will deposit on the valve core guide surface of the control valve 130, which will hinder the movement of the first valve core 131 and / or the second valve core 132, resulting in the situation that the first valve core 131 and / or the second valve core 132 cannot be closed or stuck, and finally causing the loss of function of the hydraulic damper 100.

[0051] It should be noted that the control valve 130 has a flow-through state, when the control valve 130 is in the flow-through state, the compressed gas can flow in the first direction and can also flow in the second direction. It can be understood that when the control valve is in the flow-through state, the damper 100 is in the flow-through state, that is, neither in the tension locking state nor in the compression locking state.

[0052] When the gas source 200 is opened, the compressed air enters the first chamber 111 through the first air inlet 140, and then passes through the control valve 130 in the first direction (as shown in Figure 3 horizontal right movement), thereby flushing away the oil dirt in the control valve 130, and the oil gas mixture formed after flushing flows out through the second chamber 112 and the second oil outlet 170.

[0053] In some embodiments, as shown in Figure 2 and Figure 4As shown, the body 110 is provided with a second gas inlet 150 communicating with the second chamber 112, and a first oil outlet 160 communicating with the first chamber 111. The gas source 200 is configured to communicate with the second gas inlet 150, so that the compressed gas flows out through the second gas inlet 150, the second chamber 112, the control valve 130, the first chamber 111, and the first oil outlet 160 in sequence. For details, see the arrow flow direction in Figure 4 By providing the second gas inlet 150 and the first oil outlet 160 on the body 110, the compressed gas can enter the second chamber 112 through the second gas inlet 150, then pass through the control valve 130 in the second direction (e.g. horizontal leftward movement as shown) through the second chamber 112, and then flow out through the first chamber 111 and the first oil outlet 160. The damper assembly provided by the embodiment can not only flush the oil dirt in the control valve 130 in the first direction, but also flush the oil dirt in the control valve 130 in the second direction. Moreover, the first direction and the second direction are opposite, which enhances the cleaning effect and improves the descaling efficiency. Figure 3

[0054] It should be noted that in some embodiments, the control valve 130 can be flushed only in the first direction, in some embodiments, the control valve 130 can be flushed only in the second direction, in some embodiments, the control valve 130 can be flushed first in the first direction and then in the second direction, and in some embodiments, the control valve 130 can be flushed first in the second direction and then in the first direction.

[0055] In some embodiments, as shown in Figure 2 and Figure 5 The body 110 is provided with a third chamber 113 communicating with the second chamber 112, and the piston 120 partially extends into the third chamber 113. The control valve 130 communicates with the third chamber 113 through the piston 120. The body 110 is further provided with a third oil outlet 180 communicating with the third chamber 113. The gas source 200 is configured to communicate with both the first gas inlet 140 and the second gas inlet 150, so that the compressed gas enters the control valve 130 through the first gas inlet 140 and the second gas inlet 150, and then flows out through the control valve 130, the piston 120, the third chamber 113, and the third oil outlet 180 in sequence. When the gas source 200 is opened, part of the compressed gas in the gas source 200 enters the first chamber 111 through the first gas inlet 140, and part of the compressed gas enters the second chamber 112 through the second gas inlet 150, so as to flush the oil dirt in the control valve 130 in the first direction and the second direction at the same time. The oil-gas mixture formed after the compressed gas flushes the control valve 130 flows into the piston 120, the third chamber 113, and the third oil outlet 180 through the control valve 130, and then flows out.

[0056] ​It should be noted that when flushing the control valve 130 in the first direction, the first oil outlet 160 and the second air inlet 150 are in a closed state. When flushing the control valve 130 in the second direction, the second oil outlet 170 and the first air inlet 140 are in a closed state. When flushing the control valve 130 in the first direction and the second direction at the same time, the first oil outlet 160 and the second oil outlet 170 are in a closed state.

[0057] It should be noted that in some embodiments, the compressed gas can first flush the oil dirt in the control valve 130 in the first direction, then flush the oil dirt in the control valve 130 in the second direction, and finally flush the oil dirt in the control valve 130 in the first direction and the second direction at the same time. In some embodiments, the compressed gas can first flush the oil dirt in the control valve 130 in the first direction, and then flush the oil dirt in the control valve 130 in the first direction and the second direction at the same time. In some embodiments, the compressed gas can first flush the oil dirt in the control valve 130 in the second direction, and then flush the oil dirt in the control valve 130 in the first direction and the second direction at the same time. The above three flushing methods provided by the embodiments of the present application can be combined at will to achieve the purpose of cleaning the oil dirt in the control valve 130.

[0058] It can be understood that the flushing methods can be combined at will, and the number of flushing of each flushing method can be determined according to the actual flushing situation.

[0059] Specifically, as shown in Figure 2 An L-shaped channel 121 is arranged on the piston 120, one end of the channel 121 is in communication with the control valve 130, and the other end is in communication with the third chamber 113. The oil-gas mixture formed after the compressed gas flushes the control valve 130 can flow into the third chamber 113 through the channel 121, and then flow out through the third chamber 113 and the third oil outlet 180.

[0060] Preferably, in some embodiments, the first air inlet 140 can be an air outlet on the body 110 in communication with the first chamber 111, and the second air inlet 150 can be an air outlet on the body 110, which can also be in communication with the second chamber 112, as long as it can achieve the purpose of allowing the compressed gas to enter the first chamber 111 and / or the second chamber 112 when in use.

[0061] As shown in Figure 2As shown, the damper assembly further comprises a first air inlet branch pipe 300 and a second air inlet branch pipe 400, the air source 200 is communicated with the first air inlet 140 through the first air inlet branch pipe 300, the air source 200 is communicated with the second air inlet 150 through the second air inlet branch pipe 400, the first air inlet branch pipe 300 is provided with a first switch valve 310, the first switch valve 310 is used for controlling the communication or disconnection of the first air inlet branch pipe 300, the second air inlet branch pipe 400 is provided with a second switch valve 410, the second switch valve 410 is used for controlling the communication or disconnection of the second air inlet branch pipe 400. The first switch valve 310 is arranged on the first air inlet branch pipe 300, the second switch valve 410 is arranged on the second air inlet branch pipe 400, when the flush control valve 130 is flushed in the first direction, the first switch valve 310 controls the first air inlet branch pipe 300 to be communicated, the second switch valve 410 controls the second air inlet branch pipe 400 to be disconnected, and the compressed gas can only enter the first air inlet 140 through the first air inlet branch pipe 300.

[0062] When the flush control valve 130 is flushed in the second direction, the first switch valve 310 controls the first air inlet branch pipe 300 to be disconnected, the second switch valve 410 controls the second air inlet branch pipe 400 to be communicated, and the compressed gas can only enter the second air inlet 150 through the second air inlet branch pipe 400. When the flush control valve 130 is flushed in the first direction and the second direction at the same time, the first switch valve 310 controls the first air inlet branch pipe 300 to be communicated, the second switch valve 410 controls the second air inlet branch pipe 400 to be communicated, and the compressed gas enters the control valve 130 through the first air inlet branch pipe 300 and the second air inlet branch pipe 400.

[0063] Specifically, in some embodiments, the first switch valve 310 and the second switch valve 410 are both on-off ball valves, in some embodiments, the first switch valve 310 and the second switch valve 410 can be selected from other types of valves as long as the communication or disconnection of the first air inlet branch pipe 300 and the second air inlet branch pipe 400 can be controlled, for example, the first switch valve 310 and the second switch valve 410 can be selected from solenoid valves.

[0064] As Figure 2As shown, the damper assembly further comprises an air inlet manifold 500 in communication with the air source 200, the first air inlet branch 300 and the second air inlet branch 400 are both in communication with the air inlet manifold 500, and the air inlet manifold 500 is provided with a pressure reducing valve 510 for adjusting the delivery pressure of the compressed gas in the air inlet manifold 500. By providing the air inlet manifold 500, one end of the air inlet manifold 500 is in communication with the air source 200, and the other end is in communication with the first air inlet branch 300 and the second air inlet branch 400, and the compressed gas is transported to the first air inlet branch 300 and / or the second air inlet branch 400 through the air inlet manifold 500. Moreover, the air inlet manifold 500 is provided with a pressure reducing valve 510 for adjusting the delivery pressure of the compressed gas in the air inlet manifold 500, so that the compressed gas transported to the first air inlet branch 300 and / or the second air inlet branch 400 maintains a preset pressure. Specifically, the preset pressure is four atmospheres. In some embodiments, the preset pressure can be adjusted according to actual use.

[0065] Preferably, as shown, Figure 2 As shown, the air inlet manifold 500 is provided with a pressure gauge 530, and the pressure gauge 530 displays the current pressure of the compressed gas in the air inlet manifold 500, so as to facilitate observation of whether the pressure of the compressed gas in the air inlet manifold 500 is adjusted to the preset pressure.

[0066] Preferably, as shown, Figure 2 As shown, the air source 200 further comprises an air inlet connector 210, and the air source 200 is in communication with the air inlet manifold 500 through the air inlet connector 210, so as to facilitate transportation of the compressed gas.

[0067] Preferably, as shown, Figure 2 As shown, the air inlet manifold 500 is provided with a gas filter 520, and the gas filter 520 filters the compressed gas, preventing impurities in the compressed gas from entering the control valve 130 through the first air inlet branch 300 and / or the second air inlet branch 400.

[0068] Preferably, as shown, Figure 2 As shown, the damper assembly further comprises an oil and gas collection tank 910 in communication with the first oil outlet 160, the second oil outlet 170, and the third oil outlet 180. The oil and gas collection tank 910 is provided to collect the oil and gas mixture formed after the compressed gas flushes the control valve 130, preventing the oil and gas mixture from polluting the environment.

[0069] Preferably, as shown, Figure 2As shown, the damper assembly further comprises a first oil discharge branch pipe 600 and a second oil discharge branch pipe 700, the first oil discharge port 160 is communicated with the oil-gas collection tank 910 through the first oil discharge branch pipe 600, the second oil discharge port 170 is communicated with the oil-gas collection tank 910 through the second oil discharge branch pipe 700, a third switch valve 610 is arranged on the first oil discharge branch pipe 600, the third switch valve 610 is used for controlling the communication or disconnection of the first oil discharge branch pipe 600, a fourth switch valve 710 is arranged on the second oil discharge branch pipe 700, the fourth switch valve 710 is used for controlling the communication or disconnection of the second oil discharge branch pipe 700. The third switch valve 610 and the fourth switch valve 710 are arranged, when the flush control valve 130 is flushed in the first direction, the third switch valve 610 controls the first oil discharge branch pipe 600 to be disconnected, the fourth switch valve 710 controls the second oil discharge branch pipe 700 to be communicated, and the oil-gas mixture can only flow out to the oil-gas collection tank 910 through the second oil discharge port 170 and the second oil discharge branch pipe 700. When the flush control valve 130 is flushed in the second direction, the third switch valve 610 controls the first oil discharge branch pipe 600 to be communicated, the fourth switch valve 710 controls the second oil discharge branch pipe 700 to be disconnected, and the oil-gas mixture can only flow out to the oil-gas collection tank 910 through the first oil discharge port 160 and the first oil discharge branch pipe 600.

[0070] Preferably, as shown in the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910, the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910. Figure 2 As shown, the damper assembly further comprises a third oil discharge branch pipe 800, the third oil discharge port 180 is communicated with the oil-gas collection tank 910 through the third oil discharge branch pipe 800, a fifth switch valve 810 is arranged on the third oil discharge branch pipe 800, the fifth switch valve 810 is used for controlling the communication or disconnection of the third oil discharge branch pipe 800, the third switch valve 610, the fourth switch valve 710 and the fifth switch valve 810 are arranged, when the flush control valve 130 is flushed in the first direction and the second direction at the same time, the third switch valve 610 controls the first oil discharge branch pipe 600 to be disconnected, the fourth switch valve 710 controls the second oil discharge branch pipe 700 to be disconnected, and the fifth switch valve 810 controls the third oil discharge branch pipe 800 to be communicated, and the oil-gas mixture can only flow out to the oil-gas collection tank 910 through the third oil discharge port 180 and the third oil discharge branch pipe 800.

[0071] Preferably, as shown in the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910, the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910. Figure 2 As shown, the damper assembly further comprises an oil discharge main pipe 900 communicated with the oil-gas collection tank 910, the first oil discharge branch pipe 600, the second oil discharge branch pipe 700 and the third oil discharge branch pipe 800 are all communicated with the oil discharge main pipe 900, by arranging the oil discharge main pipe 900, the first oil discharge branch pipe 600 and the oil-gas collection tank 910, the second oil discharge branch pipe 700 and the oil-gas collection tank 910, and the third oil discharge branch pipe 800 and the oil-gas collection tank 910 are communicated.

[0072] Preferably, as shown in the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910, the first oil discharge branch pipe 600 and the second oil discharge branch pipe 700 are arranged on the oil-gas collection tank 910. Figure 2As shown, the oil-gas separator 920 is arranged on the oil discharge header 900, and the compressed gas and the oil dirt are separated by the oil-gas separator 920.

[0073] Preferably, as Figure 2 As shown, the muffler 930 is arranged on the oil discharge header 900, and the oil discharge noise is reduced, and the noise pollution is reduced.

[0074] The embodiment of the present application also provides a damper cleaning method for cleaning the damper 100 on the damper cleaning method, and the damper cleaning method comprises the following steps:

[0075] S1, opening the first air inlet 140 and the second oil outlet 170, and connecting the gas source 200 with the first air inlet 140;

[0076] S2, opening the gas source 200, and the compressed gas in the gas source 200 flows out through the first air inlet 140, the first chamber 111, the control valve 130, the second chamber 112 and the second oil outlet 170 in sequence, so that the compressed gas flushes the oil dirt in the control valve 130 in the first direction.

[0077] The damper cleaning method described above not only cleans the containing cavity of the damper 100, but also cleans the control valve 130 arranged on the piston 120 in the containing cavity. First, the first air inlet 140 and the second oil outlet 170 are opened, and the gas source 200 is connected with the first air inlet 140 arranged on the body 110, and then the gas source 200 is opened, and the compressed gas in the gas source 200 flows out through the first air inlet 140, the first chamber 111, the control valve 130, the second chamber 112 and the second oil outlet 170 in sequence, and the compressed gas passes through the containing cavity, thereby flushing the oil dirt on the cavity wall, and the compressed gas passes through the control valve 130, thereby flushing the oil dirt on the guide structure of the control valve 130, and generating an oil-gas mixture with the oil dirt, and the oil-gas mixture is finally discharged through the second oil outlet 170. The damper cleaning method provided by the present application flushes the oil dirt on the guide structure of the control valve 130 by the compressed gas, without disassembling the body 110 of the damper 100, thereby reducing the strength of the staff in removing the dirt and improving the efficiency of removing the dirt.

[0078] Specifically, when step S1 is performed, the second air inlet 150 and the first oil outlet 160 are blocked.

[0079] In some embodiments, the body 110 is provided with a second gas inlet 150 communicating with the second chamber 112, and a first oil outlet 160 communicating with the first chamber 111, and after step S2, further comprising steps of: S3, opening the second gas inlet 150 and the first oil outlet 160, blocking the first gas inlet 140 and the second oil outlet 170, and connecting the gas source 200 with the second gas inlet 150; S4, opening the gas source 200, and the compressed gas in the gas source 200 flows out through the second gas inlet 150, the second chamber 112, the control valve 130, the first chamber 111 and the first oil outlet 160 in sequence, so that the compressed gas flushes the oil dirt in the control valve 130 in the second direction, wherein the first direction and the second direction are opposite. By opening the second gas inlet 150 and the first oil outlet 160, and blocking the first gas inlet 140 and the second oil outlet 170, the compressed gas flushes the control valve in the second direction, so as to clean the oil dirt in the control valve.

[0080] In some embodiments, the body 110 is provided with a third chamber 113 communicating with the second chamber 112, the piston 120 partially extends into the third chamber 113, and the control valve 130 communicates with the third chamber 113 through the piston 120, and the body 110 is further provided with a third oil outlet 180 communicating with the third chamber 113, and after step S4, further comprising steps of: S5, opening the first gas inlet 140 and the third oil outlet 180, blocking the first oil outlet 160 and the second oil outlet 170, and connecting the gas source 200 with the first gas inlet 140 and the second gas inlet 150;

[0081] S6, opening the gas source 200, and the compressed gas in the gas source 200 flows into the control valve 130 through the first gas inlet 140 and the second gas inlet 150, so that the compressed gas flushes the control valve 130 in the first direction and the second direction at the same time, so that the oil-gas mixture formed after flushing flows out through the piston 120, the third chamber 113 and the third oil outlet 180 in sequence. After S3 and S4, by opening the first gas inlet 140 and the third oil outlet 180, and blocking the first oil outlet 160 and the second oil outlet 170, that is, when step S5 is performed, the first gas inlet 140 and the second gas inlet 150 are both opened, part of the compressed gas enters the first chamber 111 through the first gas inlet 140 and then flushes the control valve 130 in the first direction, and part of the compressed gas enters the second chamber 112 through the second gas inlet 150 and then flushes the control valve 130 in the second direction, and the control valve 130 is flushed in the first direction and the second direction at the same time, so that part of the dead angle in the control valve 130 is flushed, and the cleaning effect is enhanced.

[0082] In some embodiments, before S1, S0 is further included, i.e. the hydraulic oil in the containing cavity of the body 110 is drained. Before the flushing control valve 130 is operated, the hydraulic oil in the containing cavity of the body 110 of the damper 100 needs to be drained to prevent the hydraulic oil from hindering the flow of compressed gas. Specifically, the first drain port 160 is opened to drain the hydraulic oil in the first chamber 111, the second drain port 170 is opened to drain the hydraulic oil in the second chamber 112, and the third drain port 180 is opened to drain the hydraulic oil in the third chamber 113.

[0083] Preferably, when the cleaning operation is performed, the control valve 130 is in an inoperative state, i.e. the first valve core 131 and the second valve core 132 of the control valve 130 are not blocked, i.e. the damper 100 is not in the tensile blocking state or the compression blocking state. It can be understood that when the control valve 130 is blocked, i.e. the first valve core 131 is closed or the second valve core 132 is blocked, the oil-gas mixture formed by flushing cannot be drained.

[0084] The technical features of the above-described embodiments can be combined in any manner. For the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0085] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A damper assembly, characterized by, The damping device (100) comprises a body (110), a piston (120) and a control valve (130), the body (110) is provided with a containing cavity, the piston (120) partially extends into the containing cavity to divide the containing cavity into a first chamber (111) and a second chamber (112), the control valve (130) is embedded on the piston (120) and arranged in the containing cavity, the control valve (130) is used for making the first chamber (111) and the second chamber (112) communicate or be independent of each other, the body (110) is provided with a first air inlet (140) communicating with the first chamber (111) and a second oil outlet (170) communicating with the second chamber (112); A gas source (200) is provided with compressed gas, the gas source (200) is configured to communicate with the first air inlet (140) to make the compressed gas flow out through the first air inlet (140), the first chamber (111), the control valve (130), the second chamber (112) and the second oil outlet (170) in sequence; The body (110) is provided with a second air inlet (150) communicating with the second chamber (112) and a first oil outlet (160) communicating with the first chamber (111), and the gas source (200) is configured to communicate with the second air inlet (150) to make the compressed gas flow out through the second air inlet (150), the second chamber (112), the control valve (130), the first chamber (111) and the first oil outlet (160) in sequence; The body (110) is provided with a third chamber (113) communicating with the second chamber (112), the piston (120) partially extends into the third chamber (113), the control valve (130) communicates with the third chamber (113) through the piston (120), and the body (110) is further provided with a third oil outlet (180) communicating with the third chamber (113); The gas source (200) is configured to communicate with the first air inlet (140) and the second air inlet (150) to make the compressed gas enter the control valve (130) through the first air inlet (140) and the second air inlet (150) and flow out through the control valve (130), the piston (120), the third chamber (113) and the third oil outlet (180) in sequence. ​ 2. The damper assembly of claim 1, wherein, The damper assembly further comprises a first air inlet branch pipe (300) and a second air inlet branch pipe (400), the air source (200) is communicated with the first air inlet (140) through the first air inlet branch pipe (300), the air source (200) is communicated with the second air inlet (150) through the second air inlet branch pipe (400), the first air inlet branch pipe (300) is provided with a first on-off valve (310), the first on-off valve (310) is used for controlling the communication or disconnection of the first air inlet branch pipe (300), the second air inlet branch pipe (400) is provided with a second on-off valve (410), the second on-off valve (410) is used for controlling the communication or disconnection of the second air inlet branch pipe (400).

3. The damper assembly of claim 2, wherein, The damper assembly further comprises an air inlet main pipe (500) communicated with the air source (200), the first air inlet branch pipe (300) and the second air inlet branch pipe (400) are communicated with the air inlet main pipe (500), the air inlet main pipe (500) is provided with a pressure reducing valve (510), the pressure reducing valve (510) is used for adjusting the delivery pressure of the compressed gas in the air inlet main pipe (500).

4. The damper assembly of claim 1, wherein, The damper assembly further comprises an oil and gas collecting tank (910) communicated with the first oil outlet (160), the second oil outlet (170) and the third oil outlet (180).

5. A method for cleaning a damper (100) according to any one of claims 1 to 4, characterized in that The damper cleaning method comprises the following steps: S1, opening the first air inlet (140) and the second oil outlet (170), and communicating the air source (200) with the first air inlet (140); S2, opening the air source (200), the compressed gas in the air source (200) flows out through the first air inlet (140), the first chamber (111), the control valve (130), the second chamber (112) and the second oil outlet (170) in sequence, so that the compressed gas flushes the oil dirt in the control valve (130) in a first direction.

6. The damper cleaning method according to claim 5, wherein After step S2, the following steps are further included: S3, opening the second air inlet (150) and the first oil outlet (160), plugging the first air inlet (140) and the second oil outlet (170), and communicating the air source (200) with the second air inlet (150); S4, opening the air source (200), the compressed gas in the air source (200) flows out through the second air inlet (150), the second chamber (112), the control valve (130), the first chamber (111) and the first oil outlet (160) in sequence, so that the compressed gas flushes the oil dirt in the control valve (130) in a second direction, wherein the first direction and the second direction are opposite.

7. The damper cleaning method according to claim 6, wherein After step S4, the following steps are further included: S5, opening the first gas inlet (140) and the third oil outlet (180), blocking the first oil outlet (160) and the second oil outlet (170), and connecting the gas source (200) with the first gas inlet (140) and the second gas inlet (150); S6, opening the gas source (200), and the compressed gas in the gas source (200) flows into the control valve (130) through the first gas inlet (140) and the second gas inlet (150), so that the compressed gas flushes the control valve (130) in the first direction and the second direction at the same time, so that the oil-gas mixture formed after flushing is sequentially discharged through the piston (120), the third chamber (113) and the third oil outlet (180).

8. The damper cleaning method of claim 5, wherein, Before step S1, there is also step S0, discharging hydraulic oil in the containing cavity of the body (110).

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