Aircraft cylinder seal detection method and system

Abstract

The present invention relates to the field of plunger pump detection technology, and specifically, to a method and system for detecting the sealing of an aircraft cylinder. Step S10, based on the detection requirements of a cylinder assembly, a detection hole is processed on the cylinder of the cylinder assembly; Step S20, based on the completion of the detection hole processing on the cylinder, a copper sleeve is pressed into the plunger hole and the cylinder assembly is positioned and fixed on the base of a fixed assembly; Step S30, based on the cylinder assembly being positioned and fixed on the base of a fixed assembly, the sealing rod of the detection assembly is driven to extend into the plunger hole and abut against the inner circumferential wall of the copper sleeve; Step S40, based on the formation of a sealed space in the plunger hole, oil is injected into the sealed space through an internal oil pipe; Step S50, based on the pressure value in the sealed space reaching a pressure threshold, the oil leakage state of the detection hole is obtained. This solves the problem of plunger pump cylinder sealing detection.

Description

Technical Field

[0001] The present invention relates to the technical field of plunger pump detection, and in particular to an aircraft cylinder seal detection method and system. Background Art

[0002] In recent years, with the advancement of science and technology and the development of industry, the demand for plunger pumps has been increasing. A plunger pump is a hydraulic pump that uses the reciprocating motion of a plunger in a plunger pump cylinder to change the volume of a sealed space, thereby achieving oil suction or oil pressure. Due to its high precision and stable output flow, it is widely used in aircraft.

[0003] The plunger pump cylinder is one of the core components of the plunger pump, providing the plunger pump with the required sealing space to ensure the normal operation of the pump. The performance of the plunger pump cylinder directly affects the operating efficiency, stability and service life of the plunger pump. However, in the actual operation of the plunger pump, the sealing between the plunger and the copper sleeve is often difficult to ensure because the plunger pump cylinder faces a variety of extreme conditions such as high temperature, high pressure, high speed and corrosion. Summary of the invention

[0004] In order to solve the problem of plunger pump cylinder sealing detection, the present invention provides an aircraft cylinder sealing detection method and system.

[0005] In a first aspect, the present invention provides an aircraft cylinder seal detection method, comprising:

[0006] Step S10, based on the detection requirements of the cylinder assembly, processing a detection hole on the cylinder of the cylinder assembly; wherein the cylinder assembly comprises a plunger hole and a cylinder; one end of the cylinder is detachably connected to the base; the plunger hole is arranged in the cylinder; the plunger hole extends from an end surface of the cylinder away from the base toward the other end of the cylinder;

[0007] Step S20, based on the completion of the detection hole processing on the column, the copper sleeve is pressed into the plunger hole and the cylinder assembly is positioned and fixed on the base of the fixing assembly; wherein the fixing assembly includes a base; the cylinder assembly also includes a copper sleeve; the copper sleeve is arranged in the plunger hole; the copper sleeve and the plunger hole are interference fit; the detection hole penetrates the column and connects the outer side wall of the copper sleeve with the external space of the column; the projection of the opening of one end of the detection hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the copper sleeve;

[0008] Step S30, based on the cylinder assembly being positioned and fixed on the base of the fixing assembly, the sealing rod of the driving detection assembly is extended into the plunger hole and abutted against the inner peripheral wall of the copper sleeve; wherein the detection assembly is arranged at one end of the cylinder away from the base; the detection assembly comprises the sealing rod, a driving part, and a pressure rod seat body; one end of the sealing rod is detachably connected to the pressure rod seat body, and the other end extends in a direction away from the pressure rod seat body; one end of the pressure rod seat body away from the sealing rod is detachably connected to the driving part;

[0009] Step S40, based on the formation of a sealed space in the plunger hole, injecting oil into the sealed space through the internal oil pipe; wherein the sealed space includes the end of the sealing rod, the inner circumferential wall and the bottom of the plunger hole, and the area surrounded by the inner circumferential wall of the copper sleeve; the detection component also includes an internal oil pipe; the internal oil pipe is in communication with the sealed space;

[0010] Step S50, based on the pressure value in the sealed space reaching a pressure threshold, obtaining the oil leakage state of the detection hole.

[0011] In some embodiments, the aircraft cylinder seal detection method further includes:

[0012] Step S41, based on the pressure value in the sealed space being less than a first set threshold, controlling the internal oil pipe to inject oil into the sealed space at a first flow rate; wherein the first set threshold is less than the pressure threshold.

[0013] In some embodiments, the aircraft cylinder seal detection method further includes:

[0014] Step S42, based on the pressure value being greater than or equal to the first set threshold and less than the second set threshold, controlling the internal oil pipe to inject oil into the sealed space at a second flow rate, and the sealing rod moves toward the direction close to the base; wherein, the second flow rate is greater than the first flow rate; and the second set threshold is less than the pressure threshold and greater than the first set threshold.

[0015] In some embodiments, the aircraft cylinder seal detection method further includes:

[0016] Step S43: Based on the pressure value being greater than or equal to the second set threshold, the sealing rod is controlled to stop moving, and the internal oil pipe continues to inject oil at the second flow rate.

[0017] In some embodiments, step S50 includes:

[0018] Step S51, based on the pressure value reaching the pressure threshold, controlling the internal oil pipe to repeatedly perform the action of pressure relief and pressure increase;

[0019] Step S52, based on the internal oil pipe maintaining repeated pressure relief and pressure increase actions for a set time, the oil leakage state of the detection hole is obtained.

[0020] In some embodiments, step S50 includes:

[0021] Step S53, heating the oil temperature in the sealed space to a first temperature threshold based on the pressure value reaching the pressure threshold;

[0022] Step S54: based on the oil temperature in the sealed space reaching the first temperature threshold, obtaining the oil leakage state of the detection hole.

[0023] In some embodiments, the detection hole processed in step S10 includes a first hole and a second hole; the first hole opens at one end close to the copper sleeve and the projection on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the first smooth part; the second hole opens at one end close to the copper sleeve and the projection on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the second smooth part; the copper sleeve includes a raised portion, the first smooth portion, and the second smooth portion; the first smooth portion, the raised portion, and the second smooth portion are fixedly connected in sequence; the first smooth portion is arranged at one end of the copper sleeve close to the base; one side of the raised portion is interference fit with the inner wall of the plunger hole.

[0024] In some embodiments, the aircraft cylinder seal detection method further includes:

[0025] Step S44, injecting oil into the sealed space based on the internal oil pipe to block the first hole and open the second hole;

[0026] The step S50 comprises:

[0027] Step S55, obtaining the oil leakage state of the second hole based on the pressure value in the sealed space reaching the pressure threshold;

[0028] Step S56: based on the fact that there is no oil leakage in the second hole, the oil leakage status of the first hole is opened and obtained.

[0029] In a second aspect, the present invention provides an aircraft cylinder sealing detection system, the aircraft cylinder sealing detection system is applied to any one of the aircraft cylinder sealing detection methods described in the first aspect, the aircraft cylinder sealing detection system comprising:

[0030] A fixing assembly, the fixing assembly comprising a base;

[0031] A cylinder assembly, the cylinder assembly comprising a plunger hole, a cylinder, and a copper sleeve; one end of the cylinder abuts against the base and is detachably connected; the plunger hole is arranged in the cylinder; the plunger hole extends from an end surface of the cylinder away from the base toward the other end of the cylinder in a concave manner; the copper sleeve is arranged in the plunger hole; the copper sleeve is interference fit with the plunger hole;

[0032] The detection assembly comprises a sealing rod, a driving part, a pressure rod seat body, and an internal oil pipe; one end of the sealing rod is detachably connected to the pressure rod seat body, and the other end extends in a direction away from the pressure rod seat body; one end of the pressure rod seat body away from the sealing rod is detachably connected to the driving part; the internal oil pipe is communicated with the plunger hole; the driving part drives the sealing rod;

[0033] A detection hole penetrates the column and connects the outer wall of the copper sleeve with the external space of the column; the projection of the detection hole on the surface where the outer peripheral wall of the copper sleeve is located at one end of the opening close to the copper sleeve is within the outer peripheral wall area of ​​the copper sleeve.

[0034] In some embodiments, the detection hole includes a first hole and a second hole; the first hole and the second hole are arranged on the column at intervals; the first hole penetrates the column and connects the outer wall of the copper sleeve with the external space of the column; the second hole penetrates the column and connects the outer wall of the copper sleeve with the external space of the column;

[0035] The copper sleeve includes a raised portion, a first smooth portion, and a second smooth portion; the first smooth portion, the raised portion, and the second smooth portion are fixedly connected in sequence; the first smooth portion is arranged at one end of the copper sleeve close to the base; one side of the raised portion is interference fit with the inner wall of the plunger hole; the projection of the opening of one end of the first hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the first smooth portion; the projection of the opening of one end of the second hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the second smooth portion.

[0036] In order to solve the problem of plunger pump cylinder sealing detection, the present invention has the following advantages:

[0037] A detection hole penetrating the column can be set on the column, and the outer wall of the copper sleeve is connected to the external space of the column. When a gap is generated between the copper sleeve and the inner wall of the plunger hole, causing oil leakage, the oil will flow out through the detection hole, so that it can be detected whether the oil is leaking.

[0038] The detection component includes an internal oil pipe, and the internal oil pipe is connected to the plunger hole. Oil can be injected into the sealed space through the internal oil pipe, and the pressure value in the sealed space can be controlled by pressurizing the oil, thereby avoiding frequent movement of the sealing rod and facilitating maintaining good sealing between the end of the sealing rod extending into the plunger hole and the inner wall, thereby extending the service life of the detection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A flow chart of an aircraft cylinder seal detection method according to an embodiment is shown;

[0040] Figure 2 A schematic diagram of an aircraft cylinder seal detection system according to a first embodiment is shown;

[0041] Figure 3 A schematic diagram of an aircraft cylinder seal detection system according to a second embodiment is shown;

[0042] Figure 4 A schematic diagram of an aircraft cylinder seal detection system according to a third embodiment is shown;

[0043] Figure 5 A schematic diagram of an aircraft cylinder seal detection system according to a fourth embodiment is shown;

[0044] Figure 6 A schematic diagram of an aircraft cylinder sealing detection system according to a fifth embodiment is shown.

[0045] Figure numerals: 01 fixing assembly; 11 base; 12 supporting column; 13 supporting plate; 14 rotating frame; 15 limiting shaft; 02 detection assembly; 21 driving part; 22 pressure rod seat; 23 internal oil pipe; 24 sealing rod; 03 cylinder assembly; 31 column; 32 center hole; 33 plunger hole; 34 copper sleeve; 35 raised part; 37 first smooth part; 38 second smooth part; 04 detection hole; 41 first hole; 42 second hole. DETAILED DESCRIPTION

[0046] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0047] As used herein, the term "including" and its variants are to be interpreted as open terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated system, element or component to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two systems, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different systems, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated systems, elements or components. Unless otherwise specified, "plurality" means two or more.

[0048] This embodiment discloses a method for detecting the sealing of an aircraft cylinder. Figure 1 As shown, it may include:

[0049] Step S10, based on the detection requirements of the cylinder assembly 03, a detection hole 04 is processed on the cylinder 31 of the cylinder assembly 03; wherein the cylinder assembly 03 includes a plunger hole 33 and a cylinder 31; one end of the cylinder 31 is detachably connected to the base 11; the plunger hole 33 is arranged in the cylinder 31; the plunger hole 33 extends from an end surface of the cylinder 31 away from the base 11 toward the other end of the cylinder 31;

[0050] Step S20, based on the cylinder 31, the detection hole 04 is processed, the copper sleeve 34 is pressed into the plunger hole 33, and the cylinder assembly 03 is positioned and fixed on the base 11 of the fixed assembly 01; wherein the fixed assembly 01 includes the base 11; the cylinder assembly 03 also includes the copper sleeve 34; the copper sleeve 34 is arranged in the plunger hole 33; the copper sleeve 34 and the plunger hole 33 are interference fit; the detection hole 04 penetrates the cylinder 31, and the outer wall of the copper sleeve 34 is connected with the external space of the cylinder 31; the projection of the opening of one end of the detection hole 04 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the copper sleeve 34;

[0051] Step S30, based on the cylinder assembly 03 being positioned and fixed on the base 11 of the fixing assembly 01, the sealing rod 24 of the driving detection assembly 02 is extended into the plunger hole 33 and abuts against the inner peripheral wall of the copper sleeve 34; wherein the detection assembly 02 is arranged at the end of the cylinder 31 away from the base 11; the detection assembly 02 comprises a sealing rod 24, a driving part 21, and a pressure rod seat body 22; one end of the sealing rod 24 is detachably connected to the pressure rod seat body 22, and the other end extends in a direction away from the pressure rod seat body 22; one end of the pressure rod seat body 22 away from the sealing rod 24 is detachably connected to the driving part 21;

[0052] Step S40, based on the formation of a sealed space in the plunger hole 33, injecting oil into the sealed space through the internal oil pipe 23; wherein the sealed space includes the end of the sealing rod 24, the inner circumferential wall and the bottom of the plunger hole 33, and the area surrounded by the inner circumferential wall of the copper sleeve 34; the detection component 02 also includes the internal oil pipe 23; the internal oil pipe 23 is connected to the sealed space;

[0053] Step S50, based on the pressure value in the sealed space reaching the pressure threshold, the oil leakage state of the detection hole 04 is obtained.

[0054] In this embodiment, the plunger pump has a wide range of applications in aircraft due to its high precision and stable output flow. In the actual operation of the plunger pump, since the cylinder assembly 03 faces a variety of extreme conditions such as high temperature, high pressure, high speed and corrosion, the sealing of the cylinder between the column 31 and the copper sleeve 34 is often difficult to ensure. Especially in the aviation field, there is a lack of suitable plunger pump cylinder sealing detection methods. Figure 5 As shown, the aircraft cylinder sealing detection system may include a fixing component 01 , a detection component 02 and a cylinder component 03 .

[0055] like Figure 1 As shown, the aircraft cylinder seal detection method may include steps S10 to S50. The above steps may be described in detail below:

[0056] Step S10, based on the detection requirements of the cylinder assembly 03, the detection hole 04 can be processed on the cylinder 31 of the cylinder assembly 03. The cylinder assembly 03 may include a plunger hole 33 and a cylinder 31. One end of the cylinder 31 is detachably connected to the base 11, which facilitates the disassembly and replacement of the cylinder 31 and the base 11. The plunger hole 33 may be arranged in the cylinder 31. The plunger hole 33 may extend from the end face of one end of the cylinder 31 away from the base 11 toward the other end of the cylinder 31, so that one end of the plunger hole 33 remains in a sealed state.

[0057] Step S20, after the cylinder 31 completes the processing of the detection hole 04, the copper sleeve 34 is pressed into the plunger hole 33 and the cylinder assembly 03 is positioned and fixed on the base 11 of the fixed assembly 01. Among them, the fixed assembly 01 may include a base 11 for supporting and fixing the entire hydraulic pump. The cylinder assembly 03 may also include a copper sleeve 34, which may be arranged in the plunger hole 33 to reduce the wear of the plunger pump cylinder body and increase the service life of the plunger pump cylinder body. The copper sleeve 34 and the plunger hole 33 may be interference fit, so that the copper sleeve 34 and the plunger hole 33 are in closer contact. The detection hole 04 can penetrate the cylinder 31, and the outer wall of the copper sleeve 34 is connected to the external space of the cylinder 31. When a gap is generated between the copper sleeve 34 and the inner wall of the plunger hole 33, resulting in oil leakage, the oil will flow out through the detection hole 04, so that it is possible to detect whether the oil is leaking. The projection of the opening of one end of the detection hole 04 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located can be within the outer peripheral wall area of ​​the copper sleeve 34, thereby limiting the position of the detection hole 04 and preventing the detection hole 04 from being connected to the sealed space and affecting the normal use of the plunger pump.

[0058] Step S30, when the cylinder assembly 03 is positioned and fixed on the base 11 of the fixed assembly 01, the sealing rod 24 of the detection assembly 02 can be driven to extend into the plunger hole 33 and abut against the inner circumferential wall of the copper sleeve 34, so that the end of the sealing rod 24, the inner circumferential wall and bottom of the plunger hole 33, and the inner circumferential wall of the copper sleeve 34 form a sealed space. The detection assembly 02 can be set at one end of the column 31 away from the base 11, and is used to detect the sealing of the column 31. One end of the sealing rod 24 is detachably connected to the pressure rod seat 22, and the other end extends in a direction away from the pressure rod seat 22, so that the pressure rod seat 22 can drive the sealing rod 24 to move in the direction along the plunger hole 33. When the sealing rod 24 extends into the pressure rod seat 22, the sealing rod 24 can abut against the inner peripheral wall of the copper sleeve 34, so that a seal is formed between the sealing rod 24 and the copper sleeve 34, and then the sealing rod 24 can drive the pressure rod seat 22 to move in the plunger hole 33 to control the pressure value in the sealed space. The end of the pressure rod seat 22 away from the sealing rod 24 can be detachably connected to the driving unit 21, and the movement of the detection component 02 in the plunger hole 33 can be controlled by the driving unit 21.

[0059] In step S40, the detection component 02 may further include an internal oil pipe 23, which may be in communication with the sealed space, and oil may be injected into the sealed space through the internal oil pipe 23. When a sealed space is formed in the plunger hole 33, oil may be injected into the sealed space through the internal oil pipe 23, and the pressure value in the sealed space may be controlled by pressurizing the oil, thereby avoiding frequent movement of the sealing rod 24, and facilitating good sealing between the end of the sealing rod 24 extending into the plunger hole 33 and the inner peripheral wall, thereby extending the service life of the detection component 02.

[0060] Step S50, when the pressure in the sealed space reaches the pressure threshold, the leakage state of the oil in the detection hole 04 can be obtained. When a gap is generated between the copper sleeve 34 and the inner wall of the plunger hole 33, resulting in oil leakage, the oil will flow out through the detection hole 04, so that it can be detected whether the oil is leaking.

[0061] In some embodiments, the aircraft cylinder seal detection method further includes:

[0062] Step S41, based on the pressure value in the sealed space being less than a first set threshold, controlling the internal oil pipe 23 to inject oil into the sealed space at a first flow rate; wherein the first set threshold is less than the pressure threshold.

[0063] In this embodiment, the aircraft cylinder seal detection method may further include step S31. In step S31, when the pressure value in the sealed space is less than the first set threshold, the internal oil pipe 23 may be controlled to slowly inject oil into the sealed space at a first flow rate, and the gas in the sealed space may be discharged by injecting oil into the sealed space, thereby avoiding the influence of the gas in the sealed space on the seal detection of the cylinder assembly 03. The first set threshold may be less than the pressure threshold, so that the air in the sealed space can be discharged at a relatively low pressure value.

[0064] In some embodiments, the aircraft cylinder seal detection method further includes:

[0065] Step S42, based on the pressure value being greater than or equal to the first set threshold and less than the second set threshold, control the internal oil pipe 23 to inject oil into the sealed space at a second flow rate, and the sealing rod 24 moves toward the direction close to the base 11; wherein the second flow rate is greater than the first flow rate; the second set threshold is less than the pressure threshold and greater than the first set threshold.

[0066] In this embodiment, the aircraft cylinder seal detection method may further include step S42. In step S42, when the pressure value in the sealed space is greater than the first set threshold value and less than the second set threshold value, the internal oil pipe 23 may be controlled to quickly inject oil into the sealed space at a second flow rate, so that the sealed space can be completely filled with oil and the oil is quickly pressurized. At the same time, the sealing rod 24 may move toward the direction close to the base 11, and the oil in the sealed space may be further pressurized, which is convenient for subsequent detection of whether the oil leaks. Among them, the second flow rate may be greater than the first flow rate, so that the oil can quickly fill the sealed space after the gas in the sealed space is discharged. The second set threshold value may be greater than the first set threshold value and less than the second set threshold value, so that the sealed space can be completely filled with oil when the pressure value is greater than the first set threshold value and less than the second set threshold value, in preparation for the subsequent pressurization of the sealed space.

[0067] In some embodiments, the aircraft cylinder seal detection method further includes:

[0068] Step S43 , based on the pressure value being greater than or equal to the second set threshold, the sealing rod 24 is controlled to stop moving, and the internal oil pipe 23 continues to inject oil at the second flow rate.

[0069] In this embodiment, the aircraft cylinder seal detection method may further include step S43. In step S43, when the pressure value in the sealed space is greater than the second set threshold value, the sealing rod 24 may be controlled to stop moving, and oil may be injected into the sealed space at a second flow rate through the internal oil pipe 23, and then the pressure value in the sealed space may be controlled by pressurizing the oil, thereby avoiding frequent movement of the sealing rod 24 leading to sealing failure between the sealing rod 24 and the inner peripheral wall of the copper sleeve 34, and facilitating good sealing between the end of the sealing rod 24 extending into the plunger hole 33 and the inner peripheral wall, thereby extending the service life of the sealing rod 24.

[0070] In some embodiments, step S50 includes:

[0071] Step S51, based on the pressure value reaching the pressure threshold, controlling the internal oil pipe 23 to repeatedly perform the action of pressure relief and pressure increase;

[0072] Step S52, based on the internal oil pipe 23 maintaining the repeated pressure relief and pressure increase action for a set time, the oil leakage state of the detection hole 04 is obtained.

[0073] In this embodiment, step S50 may include:

[0074] Step S51, when the pressure value in the sealed space reaches the pressure threshold, the pressure relief and pressurization action can be repeated by controlling the internal oil pipe 23. When the plunger pump is working, the plunger will reciprocate rapidly in the cylinder assembly 03, which will cause pressure fluctuations in the sealed space, thereby affecting the sealing of the cylinder assembly 03. Therefore, the pressure relief and pressurization process can be repeated by controlling the internal oil pipe 23 to simulate the working condition of the reciprocating motion of the plunger pump causing pressure fluctuations.

[0075] Step S52, when the internal oil pipe 23 keeps repeating the action of decompression and pressurization until the set time, it is possible to detect whether oil leaks under the condition of pressure fluctuation in the sealed space by detecting whether oil flows out of the detection hole 04, thereby determining whether the cylinder assembly 03 will leak under the condition of pressure fluctuation, thereby increasing the accuracy of the detection result.

[0076] In some embodiments, step S50 includes:

[0077] Step S53, heating the oil temperature in the sealed space to a first temperature threshold based on the pressure value reaching the pressure threshold;

[0078] Step S54, based on the oil temperature in the sealed space reaching the first temperature threshold, the oil leakage state of the detection hole 04 is obtained.

[0079] In this embodiment, step S50 may further include:

[0080] Step S53, when the pressure value in the sealed space reaches the pressure threshold, the oil temperature in the sealed space can be heated to the first temperature threshold. During the process of the plunger pump, the plunger will reciprocate rapidly in the cylinder assembly 03, causing the temperature in the cylinder of the plunger pump to rise, thereby affecting the sealing of the cylinder assembly 03. Therefore, the oil in the sealed space can be heated to simulate the working condition where the temperature rises due to the reciprocating motion of the plunger pump.

[0081] Step S54, when the oil temperature in the sealed space reaches the first temperature threshold, it is possible to detect whether oil leaks under the condition of increased temperature by detecting whether oil flows out of the detection hole 04, thereby determining whether the cylinder assembly 03 will leak under the condition of increased temperature, thereby increasing the accuracy of the detection result.

[0082] In some embodiments, the detection hole 04 processed in step S10 includes a first hole 41 and a second hole 42; the projection of the opening of the first hole 41 at one end close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the first smooth portion 37; the projection of the opening of the second hole 42 at one end close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the second smooth portion 38; the copper sleeve 34 includes a protrusion 35, a first smooth portion 37, and a second smooth portion 38; the first smooth portion 37, the protrusion 35, and the second smooth portion 38 are fixedly connected in sequence; the first smooth portion 37 is arranged at one end of the copper sleeve 34 close to the base 11; one side of the protrusion 35 is interference fit with the inner wall of the plunger hole 33.

[0083] In this embodiment, the detection hole 04 processed in step S10 may include a first hole 41 and a second hole 42. The projection of the first hole 41 on the surface where the outer peripheral wall of the copper sleeve 34 is located near the copper sleeve 34 is within the outer peripheral wall area of ​​the first smooth portion 37, thereby limiting the punching position of the first hole 41, avoiding the first hole 41 from being connected to the sealed space and thus affecting the normal use of the plunger pump. The projection of the second hole 42 on the surface where the outer peripheral wall of the copper sleeve 34 is located near the copper sleeve 34 is within the outer peripheral wall area of ​​the second smooth portion 38, thereby limiting the punching position of the second hole 42, avoiding the second hole 42 from being connected to the sealed space and thus affecting the normal use of the plunger pump. The copper sleeve 34 may include a raised portion 35, a first smooth portion 37, and a second smooth portion 38. The first smooth portion 37, the raised portion 35, and the second smooth portion 38 can be fixedly connected in sequence. One side of the protrusion 35 can be interference fit with the inner wall of the plunger hole 33, so that the protrusion 35 and the inner wall of the plunger hole 33 maintain good sealing, and at the same time, the relative position of the copper sleeve 34 and the plunger hole 33 can be further fixed to prevent the copper sleeve 34 from moving along the axial direction of the plunger hole 33, which affects the sealing between the copper sleeve 34 and the inner wall of the plunger hole 33. The first smooth portion 37 can be arranged at one end of the copper sleeve 34 close to the base 11, so that the oil can flow out from the first hole 41 when the first smooth portion 37 leaks, so as to detect the sealing between the first smooth portion 37 and the inner wall of the plunger hole 33. The second smooth portion 38 can be arranged at one end of the copper sleeve 34 away from the base 11, so that the oil can flow out from the second hole 42 when the first smooth portion 37, the protrusion 35, and the second smooth portion 38 all leak, so as to judge whether the protrusion 35 and the second smooth portion 38 also leak, so as to determine the leakage degree of the cylinder assembly 03. In another embodiment, the detection hole 04 may also include a third hole, and the projection of the opening of the third hole near the copper sleeve 34 on the surface of the outer peripheral wall of the copper sleeve 34 may be within the outer peripheral wall area of ​​the raised portion 35, thereby limiting the position of the third hole and preventing the third hole from being connected to the sealed space and affecting the normal use of the plunger pump. When the first smooth portion 37 and the raised portion 35 both leak, the oil can flow out from the third hole to further determine the leakage degree of the cylinder assembly 03.

[0084] In some embodiments, the aircraft cylinder seal detection method further includes:

[0085] Step S44, injecting oil into the sealed space based on the internal oil pipe 23, blocking the first hole 41 and opening the second hole 42;

[0086] Step S50 includes:

[0087] Step S55, based on the pressure value in the sealed space reaching the pressure threshold, obtaining the oil leakage state of the second hole 42;

[0088] Step S56 , based on the fact that there is no oil leakage in the second hole 42 , the oil leakage status of the first hole 41 is opened and obtained.

[0089] In this embodiment, the aircraft cylinder sealing detection method may further include:

[0090] In step S44, after the internal oil pipe 23 injects oil into the sealed space, the first hole 41 can be blocked first and the second hole 42 can be opened. When the first smooth portion 37, the raised portion 35, and the second smooth portion 38 all leak, the first hole 41 can be blocked first and the second hole 42 can be opened. When the first smooth portion 37, the raised portion 35, and the second smooth portion 38 all leak, the oil can flow out from the second hole 42, thereby avoiding that part of the oil flows out of the first hole 41 after the first hole 41 is opened, thereby affecting the accuracy of the detection result of the second hole 42, thereby improving the accuracy of the detection result.

[0091] Step S50 may further include:

[0092] Step S55 , when the pressure value in the sealed space reaches the pressure threshold, it can be detected by checking whether oil flows out of the second hole 42 to determine whether the first smooth portion 37 , the raised portion 35 , and the second smooth portion 38 are all leaking.

[0093] Step S56 , when the oil in the second hole 42 is not leaking, the second hole 42 may be blocked, and the first hole 41 may be opened to detect whether the first smooth portion 37 is leaking by checking whether oil flows out of the first hole 41 .

[0094] This embodiment discloses an aircraft cylinder sealing detection system applied to any of the aircraft cylinder sealing detection methods in the above embodiments. The aircraft cylinder sealing detection system may include:

[0095] The fixing component 01 includes a base 11;

[0096] Cylinder assembly 03, cylinder assembly 03 includes a plunger hole 33, a column 31, and a copper sleeve 34; one end of the column 31 abuts against the base 11 and is detachably connected; the plunger hole 33 is arranged in the column 31; the plunger hole 33 extends from the end surface of the column 31 away from the base 11 toward the other end of the column 31; the copper sleeve 34 is arranged in the plunger hole 33; the copper sleeve 34 and the plunger hole 33 are interference fit;

[0097] The detection assembly 02 includes a sealing rod 24, a driving unit 21, a pressure rod seat 22, and an internal oil pipe 23; one end of the sealing rod 24 is detachably connected to the pressure rod seat 22, and the other end extends in a direction away from the pressure rod seat 22; one end of the pressure rod seat 22 away from the sealing rod 24 is detachably connected to the driving unit 21; the internal oil pipe 23 is connected to the plunger hole 33; the driving unit 21 drives the sealing rod 24;

[0098] Detection hole 04, detection hole 04 penetrates the column 31 and connects the outer wall of the copper sleeve 34 with the external space of the column 31; the projection of the opening of one end of the detection hole 04 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the copper sleeve 34.

[0099] In this embodiment, if Figure 5 As shown, the aircraft cylinder sealing detection system may include a fixing component 01, a detection component 02 and a cylinder component 03. The cylinder component 03 may include a plunger hole 33, a column 31 and a copper sleeve 34. One end of the column 31 is detachably connected to the base 11, which is convenient for disassembly and replacement of the column 31 and the base 11. The plunger hole 33 may be arranged in the column 31. The plunger hole 33 may extend from the end face of the column 31 away from the base 11 toward the other end of the column 31, so that one end of the plunger hole 33 remains in a sealed state. The copper sleeve 34 may be arranged in the plunger hole 33 to reduce the wear of the plunger pump cylinder and increase the service life of the plunger pump cylinder. The copper sleeve 34 and the plunger hole 33 may be interference fit, so that the contact between the copper sleeve 34 and the plunger hole 33 is closer. The detection component 02 may include a sealing rod 24, a driving part 21, and a pressure rod seat 22. The detection component 02 can be arranged at one end of the column 31 away from the base 11, and is used to detect the sealing of the column 31. One end of the sealing rod 24 is detachably connected to the pressure rod seat body 22, and the other end extends in a direction away from the pressure rod seat body 22, so that the sealing rod 24 can drive the pressure rod seat body 22 to move in the plunger hole 33, and the pressure rod seat body 22 can drive the sealing rod 24 to move in the axial direction of the plunger hole 33. When the sealing rod 24 extends into the pressure rod seat body 22, the sealing rod 24 can abut against the inner circumferential wall of the copper sleeve 34, so that a seal is formed between the sealing rod 24 and the copper sleeve 34, thereby controlling the pressure in the plunger hole 33. The end of the pressure rod seat body 22 away from the sealing rod 24 can be detachably connected to the driving part 21, and the movement of the sealing rod 24 in the plunger hole 33 is controlled by the driving part 21. In another embodiment, as Figure 2 , Figure 3 As shown, the fixing assembly 01 may also include a support column 12, a support plate 13, a rotating frame 14 and a limiting shaft 15. The limiting shaft 15 may pass through the center hole 32 to fix the position of the column 31. One end of the limiting shaft 15 is detachably connected to the base 11, one end of the two rotating frames 14 may be symmetrically placed on the base 11 and fixed by two support rods, and the other end may be fixed to the cylinder body, which may limit the axial freedom of the cylinder body and prevent the axial movement of the cylinder body. One end of the two support rods is detachably connected to the base 11, and the other end may pass through the support plate 13 to fix the relative position of the support plate 13.

[0100] The detection hole 04 can penetrate the column 31, connecting the outer wall of the copper sleeve 34 with the external space of the column 31. When a gap is generated between the copper sleeve 34 and the inner wall of the plunger hole 33, resulting in oil leakage, the oil will flow out through the detection hole 04, so that it can be detected whether the oil is leaking. The projection of the opening of the end of the detection hole 04 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located can be within the outer peripheral wall area of ​​the copper sleeve 34, thereby limiting the drilling position of the detection hole 04, avoiding the detection hole 04 from being connected to the sealed space and affecting the normal use of the plunger pump.

[0101] In some embodiments, the detection hole 04 includes a first hole 41 and a second hole 42; the first hole 41 and the second hole 42 are arranged on the column 31 at intervals; the first hole 41 penetrates the column 31 and connects the outer wall of the copper sleeve 34 with the external space of the column 31; the second hole 42 penetrates the column 31 and connects the outer wall of the copper sleeve 34 with the external space of the column 31;

[0102] The copper sleeve 34 includes a raised portion 35, a first smooth portion 37, and a second smooth portion 38; the first smooth portion 37, the raised portion 35, and the second smooth portion 38 are fixedly connected in sequence; the first smooth portion 37 is arranged at one end of the copper sleeve 34 close to the base 11; one side of the raised portion 35 is interference fit with the inner wall of the plunger hole 33; the projection of the end of the first hole 41 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the first smooth portion 37; the projection of the end of the second hole 42 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located is within the outer peripheral wall area of ​​the second smooth portion 38.

[0103] In this embodiment, the detection hole 04 may include a first hole 41 and a second hole 42. The first hole 41 and the second hole 42 may be arranged at intervals on the column 31, so as to detect the sealing performance of the copper sleeve 34 and the plunger hole 33 at different positions. The first hole 41 may penetrate the column 31, and connect the outer wall of the copper sleeve 34 with the external space of the column 31, so that the oil can flow out through the first hole 41 when the cylinder assembly 03 leaks, thereby detecting the sealing performance of the cylinder assembly 03. The second hole 42 may penetrate the column 31, and connect the outer wall of the copper sleeve 34 with the external space of the column 31, so that the oil can flow out through the second hole 42 when the cylinder assembly 03 leaks, thereby further detecting the sealing performance of the cylinder assembly 03.

[0104] The copper sleeve 34 may include a protrusion 35, a first smooth portion 37, and a second smooth portion 38. The first smooth portion 37, the protrusion 35, and the second smooth portion 38 may be fixedly connected in sequence. One side of the protrusion 35 may be interference fit with the inner wall of the plunger hole 33, so that the protrusion 35 and the inner wall of the plunger hole 33 maintain good sealing, and at the same time, the relative position of the copper sleeve 34 and the plunger hole 33 may be further fixed to prevent the copper sleeve 34 from moving in the axial direction of the plunger hole 33, thereby affecting the sealing between the copper sleeve 34 and the plunger hole 33. The projection of the opening of one end of the first hole 41 close to the copper sleeve 34 on the surface where the outer peripheral wall of the copper sleeve 34 is located may be within the outer peripheral wall area of ​​the first smooth portion 37, thereby limiting the drilling position of the first hole 41, and preventing the first hole 41 from being connected to the sealing space, thereby affecting the normal use of the plunger pump. The projection of the opening of the second hole 42 near the copper sleeve 34 on the surface of the outer peripheral wall of the copper sleeve 34 can be within the outer peripheral wall area of ​​the second smooth portion 38, thereby limiting the drilling position of the second hole 42 to prevent the second hole 42 from communicating with the sealed space and affecting the normal use of the plunger pump. The oil can flow out from the second hole 42 when the first smooth portion 37, the raised portion 35, and the second smooth portion 38 all leak, so that the leakage degree of the cylinder assembly 03 can be detected.

[0105] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. A method for detecting the sealing of an aircraft cylinder, characterized in that: The aircraft cylinder seal detection method comprises: Step S10, based on the detection requirements of the cylinder assembly, a detection hole is processed on the cylinder of the cylinder assembly; wherein the cylinder assembly comprises a plunger hole and a cylinder; one end of the cylinder is detachably connected to the base; the plunger hole is arranged in the cylinder; the plunger hole extends from an end surface of the cylinder away from the base toward the other end of the cylinder; Step S20, based on the completion of the detection hole processing on the column, the copper sleeve is pressed into the plunger hole and the cylinder assembly is positioned and fixed on the base of the fixing assembly; wherein the fixing assembly includes a base; the cylinder assembly also includes a copper sleeve; the copper sleeve is arranged in the plunger hole; the copper sleeve and the plunger hole are interference fit; the detection hole penetrates the column and connects the outer side wall of the copper sleeve with the external space of the column; the projection of the opening of one end of the detection hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the copper sleeve; Step S30, based on the cylinder assembly being positioned and fixed on the base of the fixing assembly, the sealing rod of the driving detection assembly is extended into the plunger hole and abutted against the inner peripheral wall of the copper sleeve; wherein the detection assembly is arranged at one end of the cylinder away from the base; the detection assembly comprises the sealing rod, a driving part, and a pressure rod seat body; one end of the sealing rod is detachably connected to the pressure rod seat body, and the other end extends in a direction away from the pressure rod seat body; one end of the pressure rod seat body away from the sealing rod is detachably connected to the driving part; Step S40, based on the formation of a sealed space in the plunger hole, injecting oil into the sealed space through the internal oil pipe; wherein the sealed space includes the end of the sealing rod, the inner circumferential wall and the bottom of the plunger hole, and the area surrounded by the inner circumferential wall of the copper sleeve; the detection component also includes an internal oil pipe; the internal oil pipe is in communication with the sealed space; Step S50, based on the pressure value in the sealed space reaching a pressure threshold, obtaining the oil leakage state of the detection hole.

2. The method for detecting the sealing of an aircraft cylinder according to claim 1, characterized in that: The aircraft cylinder seal detection method further comprises: Step S41, based on the pressure value in the sealed space being less than a first set threshold, controlling the internal oil pipe to inject oil into the sealed space at a first flow rate; wherein the first set threshold is less than the pressure threshold.

3. The method for detecting the sealing of an aircraft cylinder according to claim 2, characterized in that: The aircraft cylinder seal detection method further comprises: Step S42, based on the pressure value being greater than or equal to the first set threshold and less than the second set threshold, controlling the internal oil pipe to inject oil into the sealed space at a second flow rate, and the sealing rod moves toward the direction close to the base; wherein, the second flow rate is greater than the first flow rate; and the second set threshold is less than the pressure threshold and greater than the first set threshold.

4. The method for detecting the sealing of an aircraft cylinder according to claim 3, characterized in that: The aircraft cylinder seal detection method further comprises: Step S43: Based on the pressure value being greater than or equal to the second set threshold, the sealing rod is controlled to stop moving, and the internal oil pipe continues to inject oil at the second flow rate.

5. The method for detecting the sealing of an aircraft cylinder according to claim 1, characterized in that: The step S50 comprises: Step S51, based on the pressure value reaching the pressure threshold, controlling the internal oil pipe to repeatedly perform the action of pressure relief and pressure increase; Step S52, based on the internal oil pipe maintaining repeated pressure relief and pressure increase actions for a set time, the oil leakage state of the detection hole is obtained.

6. The method for detecting the sealing of an aircraft cylinder according to claim 1, characterized in that: The step S50 comprises: Step S53, heating the oil temperature in the sealed space to a first temperature threshold based on the pressure value reaching the pressure threshold; Step S54: based on the oil temperature in the sealed space reaching the first temperature threshold, obtaining the oil leakage state of the detection hole.

7. The method for detecting the sealing of an aircraft cylinder according to claim 1, characterized in that: The detection hole processed in step S10 includes a first hole and a second hole; the first hole opens at one end close to the copper sleeve and the projection on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the first smooth part; the second hole opens at one end close to the copper sleeve and the projection on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the second smooth part; the copper sleeve includes a raised portion, the first smooth portion, and the second smooth portion; the first smooth portion, the raised portion, and the second smooth portion are fixedly connected in sequence; the first smooth portion is arranged at one end of the copper sleeve close to the base; one side of the raised portion is interference fit with the inner wall of the plunger hole.

8. The method for detecting the sealing of an aircraft cylinder according to claim 7, characterized in that: The aircraft cylinder seal detection method further comprises: Step S44, injecting oil into the sealed space based on the internal oil pipe to block the first hole and open the second hole; The step S50 comprises: Step S55, obtaining the oil leakage state of the second hole based on the pressure value in the sealed space reaching the pressure threshold; Step S56: based on the fact that there is no oil leakage in the second hole, the oil leakage status of the first hole is opened and obtained.

9. An aircraft cylinder seal detection system, characterized in that: The aircraft cylinder sealing detection system is applied to an aircraft cylinder sealing detection method according to any one of claims 1 to 8, and the aircraft cylinder sealing detection system comprises: A fixing assembly, the fixing assembly comprising a base; A cylinder assembly, the cylinder assembly comprising a plunger hole, a cylinder, and a copper sleeve; one end of the cylinder abuts against the base and is detachably connected; the plunger hole is arranged in the cylinder; the plunger hole extends from an end surface of the cylinder away from the base toward the other end of the cylinder in a concave manner; the copper sleeve is arranged in the plunger hole; the copper sleeve is interference fit with the plunger hole; The detection assembly comprises a sealing rod, a driving part, a pressure rod seat body, and an internal oil pipe; one end of the sealing rod is detachably connected to the pressure rod seat body, and the other end extends in a direction away from the pressure rod seat body; one end of the pressure rod seat body away from the sealing rod is detachably connected to the driving part; the internal oil pipe is communicated with the plunger hole; the driving part drives the sealing rod; A detection hole penetrates the column and connects the outer wall of the copper sleeve with the external space of the column; the projection of the detection hole on the surface where the outer peripheral wall of the copper sleeve is located at one end of the opening close to the copper sleeve is within the outer peripheral wall area of ​​the copper sleeve.

10. The aircraft cylinder sealing detection system according to claim 9, characterized in that: The detection hole includes a first hole and a second hole; the first hole and the second hole are arranged on the column at intervals; the first hole penetrates the column and connects the outer wall of the copper sleeve with the outer space of the column; the second hole penetrates the column and connects the outer wall of the copper sleeve with the outer space of the column; The copper sleeve includes a raised portion, a first smooth portion, and a second smooth portion; the first smooth portion, the raised portion, and the second smooth portion are fixedly connected in sequence; the first smooth portion is arranged at one end of the copper sleeve close to the base; one side of the raised portion is interference fit with the inner wall of the plunger hole; the projection of the opening of one end of the first hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the first smooth portion; the projection of the opening of one end of the second hole close to the copper sleeve on the surface where the outer peripheral wall of the copper sleeve is located is within the outer peripheral wall area of ​​the second smooth portion.

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