Intelligent pressure-maintaining sealing flushing system

Abstract

The utility model belongs to the technical field of mechanical sealing systems, and relates to an intelligent pressure maintaining sealing flushing system which comprises a control assembly, a first pressure transmitter, a second pressure transmitter, a pressure stabilizing assembly and an automatic liquid supplementing assembly. The detection end of the first pressure transmitter is used for being connected with a mechanical seal to collect the sealing liquid pressure of the mechanical seal and is in communication connection with the control assembly. The detection end of the second pressure transmitter is used for being connected with the reaction kettle to collect the pressure in the cavity of the reaction kettle, and is in communication connection with the control assembly; the automatic liquid supplementing assembly is in communication connection with the control assembly. The liquid outlet end of the automatic liquid supplementing assembly is used for being connected with the mechanical seal. The pressure maintaining end of the pressure stabilizing assembly is used for being connected with the mechanical seal and the liquid outlet end of the automatic liquid supplementing assembly, and the pressure stabilizing assembly is in communication connection with the control assembly. The utility model is used for solving the problems that the pressure difference between the sealing cavity pressure of the reaction kettle and the sealing liquid pressure of the mechanical seal is easy to be unbalanced and the pressure difference is still unbalanced after the liquid is supplemented because the liquid cannot be automatically supplemented.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal system technology, and in particular to an intelligent pressure-maintaining sealing flushing system. Background Technology

[0002] Mechanical seals are the most important type of shaft end seal in axial fluid equipment. Specifically, the flushing system is a prerequisite for the proper operation of a mechanical seal. A good flushing system can provide a clean working environment for the mechanical seal, playing a role in lubrication, cooling, and cleaning. Therefore, the stable and reliable operation of the flushing system plays a decisive role in the proper operation of the entire device.

[0003] However, when the 53C seal flushing scheme defined in the API 682 standard is used with certain media, material blockage of the pressure tapping pipe can occur, causing the 53C system to malfunction and ultimately leading to seal damage. Furthermore, when a conventional sealing system leaks, it cannot automatically replenish the fluid, resulting in back pressure and significant leakage of the sealing medium. Additionally, the pressure inside the newly added flushing medium can differ from the pressure inside the mechanical seal, causing back pressure even after manual replenishment. Utility Model Content

[0004] In view of this, the present invention provides an intelligent pressure-holding and sealing flushing system to solve the problem in the prior art that the pressure difference between the sealing chamber pressure and the mechanical seal sealing liquid pressure of the reactor is easily unbalanced due to the inability to automatically replenish the liquid, and that the pressure difference is still unbalanced after replenishment.

[0005] To achieve one or more of the above objectives or other objectives, this utility model proposes an intelligent pressure-holding and sealing flushing system, which includes: a control component, a first pressure transmitter, a second pressure transmitter, a pressure stabilizing component, and an automatic liquid replenishment component.

[0006] The detection end of the first pressure transmitter is used to connect to the mechanical seal to collect the sealing fluid pressure of the mechanical seal, and is communicatively connected to the control component;

[0007] The detection end of the second pressure transmitter is used to connect to the reactor to collect the internal pressure of the reactor, and is communicatively connected to the control component;

[0008] The automatic fluid replenishment assembly is communicatively connected to the control assembly, and the fluid outlet of the automatic fluid replenishment assembly is used to connect to the mechanical seal;

[0009] The pressure-holding end of the pressure stabilizing component is used to connect to the mechanical seal and the liquid outlet end of the automatic liquid replenishing component, and the pressure stabilizing component is communicatively connected to the control component.

[0010] Furthermore, the intelligent pressure-holding and sealing flushing system also includes an automatic replenishment valve assembly; the automatic replenishment assembly includes: an oil tank, a first flow transmitter, a first pressure gauge, a self-regulating valve, and a replenishment connector;

[0011] The input terminal of the first flow transmitter is connected to the oil tank;

[0012] The detection end of the first pressure gauge is connected to the pipeline between the oil tank and the first flow transmitter;

[0013] One end of the self-regulating valve is connected to the output end of the first flow transmitter;

[0014] The input end of the replenishment connector is connected to the other end of the self-regulating valve;

[0015] One end of the automatic replenishing valve assembly is connected to the output end of the replenishing connector, and the other end of the automatic replenishing valve assembly is used to connect to the mechanical seal.

[0016] Furthermore, the automatic liquid replenishment assembly also includes: a second liquid level transmitter and a first liquid replenishment pump;

[0017] The detection end of the second level transmitter is connected to the oil tank;

[0018] The output end of the first replenishing pump is connected to the oil tank and the input end of the first flow transmitter; wherein, the second level transmitter is communicatively connected to the first replenishing pump.

[0019] Furthermore, the pressure stabilizing component includes: a pressure boosting component and a first level transmitter;

[0020] The pressurizing end of the pressurizing component is used to connect to the mechanical seal;

[0021] The detection end of the first level transmitter is connected to the boosting end of the boosting component to monitor the liquid level change within the boosting end of the boosting component, and the first level transmitter is communicatively connected to the control component.

[0022] Furthermore, the pressure stabilizing assembly also includes: a first pressure holding valve group; a first end of the first pressure holding valve group is used to connect to the mechanical seal, and a second end of the first pressure holding valve group is connected to the pressure boosting end of the pressure boosting component;

[0023] When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at a first threshold, the first pressure holding valve group is in a self-pressure holding state, and the pipeline between the first pressure holding valve group and the pressure boosting end of the pressure boosting component is in a closed state.

[0024] When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at the second threshold, the first pressure holding valve group exits the self-pressure holding state, the pipeline between the first pressure holding valve group and the pressure boosting end of the pressure boosting component is in a connected state, and the pressure boosting component is in a pressure holding state.

[0025] Furthermore, the voltage stabilizing assembly also includes: a first safety valve; the first safety valve is connected to the second end of the first pressure-holding valve assembly;

[0026] When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at the third threshold, the first pressure holding valve group exits the self-pressure holding state, and the first safety valve enters the pressure holding state.

[0027] Furthermore, the pressure stabilizing assembly also includes a pressure holding tank; the pressure holding tank is used to connect to the mechanical seal.

[0028] Furthermore, the intelligent pressure-holding and sealing flushing system also includes: a cooling component and a first thermometer;

[0029] The cooling component is enclosed in the outer wall of the pressurizing component;

[0030] The detection end of the first thermometer is connected to the pipeline between the mechanical seal and the pressure boosting end of the pressure boosting component.

[0031] Furthermore, the intelligent pressure-holding and sealing flushing system also includes: a circulation valve group; the two ends of the circulation valve group are respectively connected to the mechanical seal and the pressure boosting end of the pressure boosting component.

[0032] Furthermore, the intelligent pressure-holding and sealing flushing system also includes an exhaust buffer assembly; the exhaust buffer assembly is connected to the exhaust end of the pressurizing component; when the pressurizing component is in zeroing operation, the liquid outlet of the automatic liquid replenishment assembly is in communication with the pressurizing component, and the exhaust end of the pressurizing component is in communication with the exhaust buffer assembly.

[0033] Implementing the embodiments of this utility model will have the following beneficial effects:

[0034] The intelligent pressure-maintaining sealing flushing system proposed in this utility model controls the working state of the pressure stabilizing component and the automatic liquid replenishment component based on the detection values ​​of the first pressure transmitter and the second pressure transmitter. It can automatically provide flushing medium to the mechanical seal and maintain the pressure difference balance between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal. This avoids the pressure remaining in an unbalanced state after automatic liquid replenishment, thereby improving the reliability and safety of the mechanical seal and reducing maintenance costs and the need for manual intervention. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] in:

[0037] Figure 1 This is a schematic diagram of the pipeline connection structure of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention;

[0038] Figure 2 This is a schematic diagram of part of the pipeline connection structure of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention;

[0039] Figure 3 This is a schematic diagram of the pipeline connection structure of the automatic liquid replenishment component of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the pipeline connection structure of the exhaust buffer assembly of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention;

[0041] Figure 5 for Figure 2 A schematic diagram of the local pipeline connection structure;

[0042] Figure 6 This is a schematic diagram of the pressure stabilizing component and cooling component of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention;

[0043] Figure 7 This is a schematic diagram of the pipeline connection structure of the first pressure-holding valve group, the second pressure-holding valve group, or the automatic liquid replenishment valve group of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention.

[0044] Figure 8 This is a schematic diagram of the pipeline connection structure of the circulation valve group of the intelligent pressure-holding and sealing flushing system in one embodiment of the present invention.

[0045] Figure label:

[0046] 10. Control component; 20. Pressure stabilizing component; 21. Pressure boosting component; 211. Servo motor; 212. Electric cylinder; 213. Piston rod; 214. Pressure boosting cylinder; 22. First pressure holding valve assembly; 23. First safety valve; 24. Pressure holding tank; 25. Second gate valve; 26. Orifice plate; 30. Automatic liquid replenishment assembly; 31. Oil tank; 311. Liquid level sight glass; 312. Breather port; 32. Liquid replenishment connector; 321. First flange; 33. First liquid replenishment pump; 331. Liquid replenishment oil pump; 332. Liquid replenishment motor; 34. Residual discharge valve; 35. Second safety valve; 36. Two-valve assembly; 37. Liquid replenishment check valve; 38. Liquid replenishment buffer tank; 40. Mechanical seal; 50. Reactor; 60. Cooling assembly; 61. 62. Cooling jacket; 63. Inlet shut-off valve; 64. Outlet shut-off valve; 65. Inlet flange; 76. Outlet flange; 77. Circulation valve assembly; 78. Second shut-off valve; 79. Circulation oil pump; 70. Circulation motor; 71. Third shut-off valve; 82. Exhaust buffer assembly; 83. Exhaust valve; 84. Second pressure holding valve assembly; 85. First check valve; 86. Exhaust buffer tank; 87. Second check valve; 88. Oil replenishment and exhaust funnel; 99. Automatic replenishment valve assembly; 90. Second flange; 91. Third check valve; 100. Manual replenishment assembly; 110. Second replenishment pump; 120. Third gate valve; 130. Fourth check valve; 210. First shut-off valve; 220. Pneumatic valve; 230. First gate valve;

[0047] PT1, First pressure transmitter; PT2, Second pressure transmitter; LT, First level transmitter; LIT, Second level transmitter; TG1, First thermometer; TG2, Second thermometer; PG1, First pressure gauge; PG2, Second pressure gauge; FT1, First flow transmitter; FT2, Second flow transmitter; Y1, First filter; Y2, Second filter; PVC, Self-regulating control valve; TIT, Temperature transmitter. Detailed Implementation

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order; the cold water mentioned in the specification and claims of this invention includes room temperature water.

[0049] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0051] Reference Figures 1 to 8 The first embodiment of this application proposes an intelligent pressure-holding and sealing flushing system, which includes: a control component 10, a first pressure transmitter PT1, a second pressure transmitter PT2, a pressure stabilizing component 20, and an automatic liquid replenishment component 30.

[0052] The detection end of the first pressure transmitter PT1 is used to connect to the mechanical seal 40 to collect the sealing fluid pressure of the mechanical seal 40, and is communicatively connected to the control component 10;

[0053] The detection end of the second pressure transmitter PT2 is used to connect to the reactor 50 to collect the internal pressure of the reactor 50, and is communicatively connected to the control component 10;

[0054] The automatic fluid replenishment component 30 is communicatively connected to the control component 10, and the liquid outlet of the automatic fluid replenishment component 30 is used to connect to the mechanical seal 40;

[0055] The pressure-holding end of the pressure stabilizing component 20 is used to connect the mechanical seal 40 and the liquid outlet end of the automatic liquid replenishing component 30, and the pressure stabilizing component 20 is communicatively connected to the control component 10.

[0056] In this embodiment, the detection end of the first pressure transmitter PT1 is inserted into the flushing medium inside the mechanical seal 40 cavity to collect the sealing fluid pressure inside the mechanical seal 40 in real time. The detection end of the second pressure transmitter PT2 is inserted into the flushing medium inside the reactor 50 to collect the pressure inside the reactor 50 cavity in real time. The control component 10 dynamically calculates the pressure difference between the pressure inside the reactor 50 cavity and the sealing fluid pressure inside the mechanical seal 40. The automatic fluid replenishment component 30 automatically replenishes the flushing medium to the mechanical seal 40 according to the pressure difference, so as to ensure that the pressure difference between the reactor 50 and the mechanical seal 40 is stable, and also reduces the dry friction of the mechanical seal 40 caused by insufficient flushing medium, reduces the wear rate of the mechanical seal 40, and extends the replacement cycle of the mechanical seal 40.

[0057] According to the parameters of the first pressure transmitter PT1 and the second pressure transmitter PT2, the control component 10 uses the pressure stabilizing component 20 to adjust the pressure of the mechanical seal 40 so that the pressure difference meets the safe pressure threshold set by the control component 10.

[0058] Specifically, the pressure-holding end of the pressure stabilizing component 20 is used to connect the mechanical seal 40 and the liquid outlet end of the automatic liquid replenishing component 30, so that the pressure stabilizing component 20 performs pressure regulation on the flushing medium delivered by the automatic liquid replenishing component 30 to the mechanical seal 40. That is, the flushing medium output by the automatic liquid replenishing component 30 flows into the pressure-holding end of the pressure stabilizing component 20, and after the pressure stabilizing component 20 performs pressure regulation on the flushing medium, the flushing medium is then output into the mechanical seal 40.

[0059] Reference Figure 1 , Figure 2 and Figure 6 The pressure stabilizing component 20 includes: a pressure boosting component 21 and a first level transmitter LT;

[0060] The pressurizing end of the pressurizing component 21 is used to connect to the mechanical seal 40;

[0061] The detection end of the first level transmitter LT is connected to the boosting end of the boosting component 21 to monitor the liquid level change in the boosting end of the boosting component 21. The first level transmitter LT is communicatively connected to the control component 10.

[0062] In this embodiment, the first level transmitter LT is used to monitor the liquid level change at the booster end of the booster component 21 in real time, that is, to monitor the pressure input and output from the booster end of the booster component 21 to the mechanical seal 40 in real time, and to determine the leakage of the mechanical seal 40. The main function is to continuously supply flushing medium to the mechanical seal 40. The control component 10 adjusts the booster value output by the booster component 21 to the mechanical seal 40 based on the liquid level change value detected by the first level transmitter LT, so as to maintain the sealing fluid pressure of the mechanical seal 40 within the normal threshold.

[0063] Specifically, the booster component 21 includes a servo motor 211, an electric cylinder 212, a piston rod 213, and a booster cylinder 214, see below. Figure 6 The control component 10 controls the connected servo motor 211. According to the instructions from the control component 10, the servo motor 211 controls the movement of the electric cylinder 212, which in turn pushes the piston rod 213 up and down within the booster cylinder 214 to control the output pressure. The first level transmitter LT monitors the changes in the liquid level within the booster cylinder 214 in real time.

[0064] Specifically, the pressurization component 21 uses an electric cylinder 212 instead of a hydraulic cylinder to reduce the problem of hydraulic line blockage.

[0065] Furthermore, the control component 10 includes an audible and visual alarm, a servo driver, a PLC, a touch screen, and an IoT transmission module.

[0066] See Figure 1 and Figure 2 The intelligent pressure-holding and sealing flushing system also includes a DCS control system. The control component 10 sends the detection data and the operating status of each device to the DCS control system and the Internet of Things transmission module anytime and anywhere to realize remote alarm.

[0067] Reference Figures 1 to 5 The pressure stabilizing component 20 further includes: a first pressure holding valve group 22; the first end of the first pressure holding valve group 22 is used to connect to the mechanical seal 40, and the second end of the first pressure holding valve group 22 is connected to the pressure boosting end of the pressure boosting component 21;

[0068] When the pressure difference between the pressure inside the reactor 50 and the sealing liquid pressure of the mechanical seal 40 is at a first threshold, the first pressure holding valve group 22 is in a self-pressure holding state, and the pipeline between the first pressure holding valve group 22 and the pressure boosting end of the pressure boosting component 21 is in a closed state.

[0069] When the pressure difference between the pressure inside the reactor 50 and the sealing liquid pressure of the mechanical seal 40 is at the second threshold, the first pressure holding valve group 22 exits the self-pressure holding state, the pipeline between the first pressure holding valve group 22 and the pressure boosting end of the pressure boosting component 21 is in a connected state, and the pressure boosting component 21 is in a pressure holding state.

[0070] In this embodiment, when the pressure difference between the internal pressure of the reactor 50 and the sealing liquid pressure of the mechanical seal 40 is at a first threshold, the first pressure-holding valve group 22 automatically cuts off the pipeline between the mechanical seal 40 and the pressure boosting component 21, putting the pressure boosting component 21 into a standby state, so that the valve inside the first pressure-holding valve group 22 plays a pressure-holding role; when it is at a second threshold, the first pressure-holding valve group 22 is connected to the pressure boosting component 21, that is, the mechanical seal 40 is connected to the pressure boosting component 21, so that the pressure boosting component 21 enters the working state. The control component 10 intelligently adjusts the working state of the pressure boosting component 21 according to the detection parameters of the first pressure transmitter PT1, the second pressure transmitter PT2, the first liquid level transmitter LT and the start-up state of the first pressure-holding valve group 22; to achieve dual overpressure protection and improve the system reliability of the intelligent pressure-holding seal flushing system.

[0071] Reference Figure 1 and Figure 2 The pressure stabilizing assembly 20 further includes: a first safety valve 23; the first safety valve 23 is connected to the second end of the first pressure holding valve assembly 22;

[0072] When the pressure difference between the pressure inside the reactor 50 and the sealing liquid pressure of the mechanical seal 40 is at the third threshold, the first pressure holding valve group 22 exits the self-pressure holding state, and the first safety valve 23 enters the pressure holding state.

[0073] In this embodiment, when the pressure difference between the cavity pressure of the reactor 50 and the sealing liquid pressure of the mechanical seal 40 is within the normal pressure fluctuation range, it is autonomously adjusted by the first pressure holding valve group 22; when the pressure difference exceeds the autonomous adjustment range of the first pressure holding valve group 22, it is adjusted by the pressure boosting component 21; when the pressure difference exceeds the adjustment range of the pressure boosting component 21, it is adjusted together with the first safety valve 23 and the pressure boosting component 21.

[0074] Reference Figure 1 , Figure 2 and Figure 5 The pressure stabilizing assembly 20 further includes a pressure holding tank 24; the pressure holding tank 24 is used to connect to the mechanical seal 40.

[0075] In this embodiment, the output end of the pressure holding tank 24 is connected to the inner cavity of the mechanical seal 40. The pressure holding tank 24, together with the first pressure holding valve group 22, the pressure boosting component 21, and the first safety valve 23, plays a stabilizing role for the mechanical seal 40.

[0076] Furthermore, the pipeline between the mechanical seal 40 and the pressure tank 24 is equipped with a second gate valve 25 and a throttling orifice plate 26, see... Figure 1 , Figure 2 and Figure 5 .

[0077] Reference Figure 1 , Figure 2 and Figure 6 The intelligent pressure-holding and sealing flushing system further includes: a cooling assembly 60 and a first thermometer TG1;

[0078] The cooling component 60 is wrapped around the outer wall of the pressurizing component 21;

[0079] The detection end of the first thermometer TG1 is connected to the pipeline between the mechanical seal 40 and the pressure boosting end of the pressure boosting component 21.

[0080] In this embodiment, the cooling component 60 is used to remove the high temperature generated by the operation of the pressurizing component 21 itself and the high temperature generated by the liquid flow and heat conduction in the pipeline between the mechanical seal 40 and the pressurizing component 21 in a timely manner, so as to improve the operating environment of the pipeline and the mechanical seal 40; the pressurizing component 21 adjusts the pressure value and flushing medium flow rate to the mechanical seal 40 according to the detection data of the first thermometer TG1; the cooling component 60 adjusts the cooling adjustment threshold according to the detection data of the first thermometer TG1.

[0081] See Figure 6 The cooling assembly 60 includes a cooling jacket 61, an inlet shut-off valve 62, an outlet shut-off valve 63, an inlet flange 64, an outlet flange 65, and a cooling water circulation component. One end of the inlet flange 64 and one end of the outlet flange 65 are both connected to the cooling water circulation component. The inlet shut-off valve 62 is located between the other end of the inlet flange 64 and the cooling jacket 61, and the outlet shut-off valve 63 is located between the other end of the outlet flange 65 and the cooling jacket 61. The first thermometer TG1 is communicatively connected to the inlet shut-off valve 62 and the outlet shut-off valve 63.

[0082] Furthermore, the cooling jacket 61 is attached to the outer wall of the booster cylinder 214 to facilitate cleaning of the cooling jacket 61, see... Figure 6 .

[0083] Reference Figures 1 to 5 The intelligent pressure-holding and sealing flushing system further includes: a circulation valve group 70; the two ends of the circulation valve group 70 are respectively connected to the mechanical seal 40 and the pressure boosting end of the pressure boosting component 21.

[0084] In this embodiment, the circulating valve group 70 is used to avoid local overheating caused by the flushing medium remaining in the mechanical seal 40 and pipeline. Moreover, the flushing medium forms turbulence through internal circulation, which allows the flushing medium to flush the gap between the sealing surfaces and prevent particulate matter from depositing or crystals from adhering.

[0085] Specifically, the circulation valve group 70 is connected to the automatic replenishment component 30, and the ratio of external discharge to replenishment is dynamically adjusted according to the cleanliness of the flushing medium.

[0086] Furthermore, the circulation valve assembly 70 includes two second shut-off valves 71, a circulation oil pump 72, a circulation motor 73, and a third shut-off valve 74; the circulation oil pump 72 is located between the first ends of the two second shut-off valves 71; the circulation motor 73 is controlled and connected to the circulation oil pump 72; the two ends of the third shut-off valve 74 are respectively connected to the second ends of the two second shut-off valves 71, and these two connection points are respectively the connection points of the first circulation valve assembly 70 and the second circulation valve assembly 70, see... Figure 8 .

[0087] Reference Figure 1 , Figure 2 and Figure 4 The intelligent pressure-holding and sealing flushing system also includes an exhaust buffer assembly 80; the exhaust buffer assembly 80 is connected to the exhaust end of the pressurizing component 21; the liquid outlet of the automatic liquid replenishment assembly 30 is also connected to the pressurizing component 21; when the pressurizing component 21 is in a zeroing operation, the liquid outlet of the automatic liquid replenishment assembly 30 is in communication with the pressurizing component 21, and the exhaust end of the pressurizing component 21 is in communication with the exhaust buffer assembly 80.

[0088] In this embodiment, when the booster cylinder 214 of the booster component 21 is in the zeroing operation, the cylinder body of the booster cylinder 214 moves down, and at the same time, the flushing medium output by the automatic liquid replenishment component 30 is automatically sucked into the cylinder body of the booster cylinder 214, while the gas in the booster cylinder 214 is discharged into the exhaust buffer component 80.

[0089] Reference Figure 1 , Figure 2 and Figure 4 Furthermore, the exhaust buffer assembly 80 includes an exhaust valve 81, a second pressure gauge PG2, a second pressure holding valve group 82, a first check valve 83, a second flow transmitter FT2, an exhaust buffer tank 84, a first filter Y1, a second check valve 85, and an oil replenishment and exhaust funnel 86.

[0090] The exhaust valve 81, the second pressure holding valve group 82, the first check valve 83, and the second flow transmitter FT2 are sequentially arranged between the mechanical seal 40 and the first end of the exhaust buffer tank 84; the second pressure gauge PG2 is installed on the pipeline between the exhaust valve 81 and the second pressure holding valve group 82.

[0091] The first filter Y1 and the second one-way valve 85 are sequentially arranged between the second end of the exhaust buffer tank 84 and the pressurizing component 21.

[0092] The oil replenishment and slow exhaust funnel 86 is located at the third end of the exhaust buffer tank 84.

[0093] The first pressure transmitter PT1 is connected to the mechanical seal 40 via the exhaust valve 81; the second pressure gauge PG2 is also installed on the pipeline between the first pressure transmitter PT1 and the exhaust valve 81.

[0094] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 The intelligent pressure-holding and sealing flushing system also includes an automatic replenishment valve group 90; the automatic replenishment component 30 includes: an oil tank 31, a first flow transmitter FT1, a first pressure gauge PG1, a self-regulating valve PVC, and a replenishment connector 32;

[0095] The input terminal of the first flow transmitter FT1 is connected to the oil tank 31;

[0096] The detection end of the first pressure gauge PG1 is connected to the pipeline between the oil tank 31 and the first flow transmitter FT1;

[0097] One end of the self-regulating valve PVC is connected to the output end of the first flow transmitter FT1;

[0098] The input end of the replenishment connector 32 is connected to the other end of the self-regulating valve PVC;

[0099] One end of the automatic replenishing valve assembly 90 is connected to the output end of the replenishing connector 32, and the other end of the automatic replenishing valve assembly 90 is used to connect to the mechanical seal 40.

[0100] In this embodiment, the flushing medium in the oil tank 31 flows to the mechanical seal 40 via the first flow transmitter FT1, allowing the first flow transmitter FT1 to monitor the flow rate of the flushing medium supplied from the oil tank 31 to the mechanical seal 40 in real time. The first pressure gauge PG1 monitors the pressure of the flushing medium in real time, and the pressure boosting component 21 adjusts its operating state based on the detected value. The self-regulating valve PVC automatically adjusts its opening using the pressure difference of the flushing medium, requiring no external power or air source. The oil tank 31 is connected to the automatic replenishing valve assembly 90 via the replenishing connector 32. The automatic replenishing valve assembly 90 has a dual-channel replenishing pipeline, ensuring that if one pipeline fails, the other can be used as a backup.

[0101] See Figure 7 Furthermore, the first pressure holding valve group 22, the second pressure holding valve group 82 and the automatic replenishing valve group 90 have the same structure. The first pressure holding valve group 22, the second pressure holding valve group 82 and the automatic replenishing valve group 90 all include two first shut-off valves 210, a pneumatic valve 220 and a first gate valve 230.

[0102] The pneumatic valve 220 is disposed between the first ends of the two first shut-off valves 210; the two ends of the first gate valve 230 are respectively connected between the second ends of the two first shut-off valves 210, and these two connection points are the first valve group connection point and the second valve group connection point, respectively.

[0103] When the mechanical seal 40 and the reactor 50 are in a power outage and shutdown operation, the pneumatic valve 220 enters the working state.

[0104] See Figure 1 and Figure 2 The first valve assembly connection of the first pressure holding valve assembly 22 is used to connect to the mechanical seal 40, and the second valve assembly connection of the first pressure holding valve assembly 22 is connected to the pressurizing component 21 and the automatic liquid replenishment component 30.

[0105] See Figure 1 , Figure 2 and Figure 4 The first valve group connection of the second pressure holding valve group 82 is connected to the second pressure gauge PG2, and the second valve group connection of the second pressure holding valve group 82 is connected to the first check valve 83.

[0106] See Figure 1 , Figure 2 and Figure 8The first circulation valve group 70 connection of the circulation valve group 70 is connected to the second valve group connection of the second pressure holding valve group 82; the second circulation valve group 70 connection of the circulation valve group 70 is connected to the pressurizing component 21 and the automatic liquid replenishment component 30.

[0107] See Figure 1 and Figure 2 The detection end of the first thermometer TG1 is connected to the pipeline between the connection point of the second circulation valve group 70 and the pressurization component 21.

[0108] Furthermore, the first valve assembly connection of the automatic replenishing valve assembly 90 is connected to the pressurizing component 21, and the second valve assembly connection of the automatic replenishing valve assembly 90 is connected to the output end of the replenishing connector 32, see... Figures 1 to 3 .

[0109] Furthermore, the replenishment connection 32 includes at least one first flange 321; the second valve assembly connection of the automatic replenishment valve assembly 90 is provided with a second flange 91, and the first flange 321 is connected to the second flange 91, see... Figures 1 to 3 .

[0110] The first valve assembly connection of the automatic replenishment valve assembly 90 is provided with a third check valve 92, and the first valve assembly connection of the automatic replenishment valve assembly 90 is connected to the pressurization component 21 through the third check valve 92.

[0111] The intelligent pressure-holding and sealing flushing system also includes a temperature transmitter (TIT). The detection end of the temperature transmitter (TIT) is connected to the pipeline between the third check valve 92 and the pressure boosting component 21. Figure 1 and Figure 2 .

[0112] Reference Figure 3 The automatic liquid replenishment assembly 30 further includes: a second liquid level transmitter LIT and a first liquid replenishment pump 33;

[0113] The detection end of the second level transmitter LIT is connected to the oil tank 31;

[0114] The output end of the first replenishing pump 33 is connected to the oil tank 31 and the input end of the first flow transmitter FT1; wherein, the second level transmitter LIT is connected to the first replenishing pump 33 via communication.

[0115] In this embodiment, the content of flushing medium in the oil tank 31 is monitored in real time using the second level transmitter LIT; the first replenishment pump 33 adjusts the flow rate of the flushing medium input to the oil tank 31 according to the content, and the first replenishment pump 33 can also directly output flushing medium to the first flow transmitter FT1.

[0116] Furthermore, the oil tank 31 is equipped with a level sight glass 311 and a breather 312. The level sight glass 311 facilitates observation of the flushing medium content within the oil tank 31; the breather 312 allows external air to enter, preventing the oil tank 31 from deforming or being damaged due to vacuum. (See [link to relevant documentation]). Figure 3 .

[0117] See Figure 3 The automatic fluid replenishment assembly 30 further includes: a residual discharge valve 34 and a second thermometer TG2; the detection ends of the residual discharge valve 34 and the second thermometer TG2 are both connected to the oil tank 31. The residual discharge valve 34 discharges the waste flushing medium in the oil tank 31, and the second thermometer TG2 monitors the temperature of the flushing medium in the oil tank 31.

[0118] The first replenishing pump 33 includes a replenishing oil pump 331 and a replenishing motor 332; the replenishing oil pump 331 is connected to the oil tank 31 and the input terminal of the first flow transmitter FT1 respectively; the replenishing motor 332 is controlled and connected to the replenishing oil pump 331.

[0119] A second filter Y2 is provided between the oil tank 31 and the replenishing oil pump 331, and a replenishing buffer tank 38 is provided on the pipeline between the replenishing oil pump 331 and the first flow transmitter FT1.

[0120] See Figure 3 The automatic fluid replenishment assembly 30 also includes a second safety valve 35 and two two-valve groups 36; the second safety valve 35 and the two two-valve groups 36 are sequentially arranged on the pipeline between the oil tank 31 and the detection end of the first pressure gauge PG1.

[0121] The automatic liquid replenishment assembly 30 also includes a liquid replenishment check valve 37, which is connected to the self-regulating valve PVC and the liquid replenishment connector 32.

[0122] See Figure 1 and Figure 2 The intelligent pressure-holding and sealing flushing system also includes a manual fluid replenishment component 100, which includes a second fluid replenishment pump 110, a third gate valve 120 and a fourth check valve 130. The fourth check valve 130 and the third gate valve 120 are sequentially arranged on the pipeline between the mechanical seal 40 and the second fluid replenishment pump 110.

[0123] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An intelligent pressure-maintaining and sealing flushing system, characterized in that, include: Control components; A first pressure transmitter, the detection end of which is used to connect to a mechanical seal to acquire the sealing fluid pressure of the mechanical seal, and is communicatively connected to the control component; The second pressure transmitter has its detection end connected to the reactor to collect the pressure inside the reactor chamber, and is communicatively connected to the control component. An automatic fluid replenishment assembly, which is communicatively connected to the control assembly, and whose outlet end is used to connect to the mechanical seal; A pressure stabilizing component, wherein the pressure-holding end of the pressure stabilizing component is used to connect to the mechanical seal and the liquid outlet end of the automatic liquid replenishment component, and the pressure stabilizing component is communicatively connected to the control component.

2. The intelligent pressure-maintaining and sealing flushing system according to claim 1, characterized in that, The intelligent pressure-maintaining and sealing flushing system also includes an automatic liquid replenishment valve assembly; the automatic liquid replenishment assembly includes: tank; A first flow transmitter, the input end of which is connected to the oil tank; The first pressure gauge has its detection end connected to the pipeline between the oil tank and the first flow transmitter. A self-operated regulating valve, one end of which is connected to the output end of the first flow transmitter; A replenishment connector, the input end of which is connected to the other end of the self-regulating valve; One end of the automatic replenishing valve assembly is connected to the output end of the replenishing connector, and the other end of the automatic replenishing valve assembly is used to connect to the mechanical seal.

3. The intelligent pressure-maintaining and sealing flushing system according to claim 2, characterized in that, The automatic fluid replenishment component also includes: A second level transmitter, the detection end of which is connected to the oil tank; A first replenishing pump, the output of which is connected to the oil tank and the input of the first flow transmitter; wherein, the second level transmitter is communicatively connected to the first replenishing pump.

4. The intelligent pressure-maintaining and sealing flushing system according to claim 2, characterized in that, The voltage regulator component includes: A pressure boosting component, wherein the pressure boosting end of the pressure boosting component is used to connect to the mechanical seal; A first level transmitter, wherein the detection end of the first level transmitter is connected to the boosting end of the boosting component to monitor the level change within the boosting end of the boosting component, and the first level transmitter is communicatively connected to the control component.

5. The intelligent pressure-maintaining and sealing flushing system according to claim 4, characterized in that, The pressure stabilizing assembly further includes: a first pressure holding valve group; a first end of the first pressure holding valve group is used to connect to the mechanical seal, and a second end of the first pressure holding valve group is connected to the pressure boosting end of the pressure boosting component; When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at a first threshold, the first pressure holding valve group is in a self-pressure holding state, and the pipeline between the first pressure holding valve group and the pressure boosting end of the pressure boosting component is in a closed state. When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at the second threshold, the first pressure holding valve group exits the self-pressure holding state, the pipeline between the first pressure holding valve group and the pressure boosting end of the pressure boosting component is in a connected state, and the pressure boosting component is in a pressure holding state.

6. The intelligent pressure-maintaining and sealing flushing system according to claim 5, characterized in that, The pressure stabilizing assembly further includes: a first safety valve; the first safety valve is connected to the second end of the first pressure-holding valve assembly; When the pressure difference between the pressure inside the reactor and the sealing liquid pressure of the mechanical seal is at the third threshold, the first pressure holding valve group exits the self-pressure holding state, and the first safety valve enters the pressure holding state.

7. The intelligent pressure-maintaining and sealing flushing system according to claim 4, characterized in that, The pressure stabilizing assembly further includes a pressure holding tank; the pressure holding tank is used to connect to the mechanical seal.

8. The intelligent pressure-maintaining and sealing flushing system according to claim 4, characterized in that, The intelligent pressure-maintaining and sealing flushing system also includes: A cooling assembly, the cooling assembly being wrapped around the outer wall of the pressurization component; A first thermometer, the detection end of which is connected to the pipeline between the mechanical seal and the pressure boosting end of the pressure boosting component.

9. The intelligent pressure-maintaining and sealing flushing system according to claim 4, characterized in that, The intelligent pressure-holding and sealing flushing system further includes: a circulation valve group; the two ends of the circulation valve group are respectively connected to the mechanical seal and the pressure boosting end of the pressure boosting component.

10. The intelligent pressure-maintaining and sealing flushing system according to claim 9, characterized in that, The intelligent pressure-holding and sealing flushing system also includes an exhaust buffer assembly; the exhaust buffer assembly is connected to the exhaust end of the pressurizing component; when the pressurizing component is in zeroing operation, the liquid outlet of the automatic liquid replenishment assembly is in communication with the pressurizing component, and the exhaust end of the pressurizing component is in communication with the exhaust buffer assembly.

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