152 results about "Fluid leakage" patented technology

A sealing mechanism for a rotating mechanism, a rotating mechanism and a sealing method. The rotating mechanism comprises a rotor having a rotary disk (1) and a stator accommodating the rotor. The sealing mechanism comprises a first flow-blocking portion (4), which protrudes and is provided on an end face of the rotary disk (1), wherein a labyrinth seal and a spiral seal are provided in combination at the first flow-blocking portion (4); and a first corresponding flow-blocking portion (5), which is recessed, is provided on an inner surface of the stator and is in clearance fit with the first flow-blocking portion (4). The first flow-blocking portion (4) has a first recessed portion and / or protruding portion (6) on a circumferential surface thereof, the first corresponding flow-blocking portion (5) is flatly constructed or provided, on a circumferential surface thereof, with a first corresponding protruding portion and / or recessed portion (7) which are / is in clearance fit with the first recessed portion and / or protruding portion (6), and the first flow-blocking portion (4) and the first corresponding flow-blocking portion (5) form a labyrinth seal at the corresponding top or bottom section thereof respectively and form a spiral seal at a corresponding side section respectively, which can further suppress fluid leakage, thereby improving the sealing performance.

Described herein are examples of pressure sensors, and methods to assemble pressure sensors. In some examples, a pressure sensor uses gauges attached to a sensor tube of a sensor body to detect a pressure of fluid flowing within the sensor tube. In some examples, the sensor tube helps to isolate the gauges from some of the stresses that the rest of the sensor body may experience due to intense fluid pressures. In some examples, the sensor body has a one piece design that increases durability. In some examples, a sensor adapter may be attached to the sensor body and / or hardened by one or more techniques to reduce the chance of fluid leakage and / or further increase durability. The gauges, the sensor body, and / or the sensor adapter can be enclosed within a sensor cover, and encased within a potting material, to protect and / or insulate the components.

The application discloses a tube sheet sealing structure and relates to the technical field of heat exchanger sealing, aiming to solve the problem of fluid leakage caused by insufficient sealing performance of the current sealing structure. The tube sheet sealing structure comprises two flanges, a tube sheet, two first welding rings and a sealing component. The two flanges are oppositely arranged and form a clamping space through a connecting piece. The two first welding rings are coaxially and sealingly connected to the opposite end faces of the two flanges, respectively. The first welding ring is coaxially sleeved on the outer periphery of the tube sheet. The inner ring surface of the first welding ring is spaced apart along the circumferential direction and the axial direction of the tube sheet and is provided with a plurality of protrusions extending along the radial direction of the tube sheet. The inner ring surface of the first welding ring is matched with the outer peripheral surface of the tube sheet through the protrusions. The sealing component is sealingly connected with the first welding ring and the tube sheet. The sealing component, the first welding ring and the tube sheet enclose a sealing cavity. The sealing cavity is communicated with the gap between the first welding ring and the tube sheet, and is used for preventing fluid leakage.

The utility model provides a floating centering test fixture. The floating centering test fixture comprises a base, a cover plate, a sliding block and two elastic pieces, the base comprises a bottom wall and a peripheral wall arranged around the outer edge of the bottom wall, the bottom wall and the peripheral wall jointly define a containing space, the end, away from the bottom wall, of the base is combined to the cover plate, and the cover plate is provided with a first through hole. The sliding block is located in the containing space and can slide in the radial direction, a first connecting hole is formed in the center of the sliding block, a first connecting structure is arranged in the first connecting hole and used for being connected with a tested connector, and the first connecting hole corresponds to the first through hole of the cover plate. Elastic pieces are arranged on the two opposite surfaces of the sliding block along the axis of the sliding block respectively and make contact with the cover plate and the bottom wall of the base respectively. The elastic pieces not only provide floating support and buffer positioning for the sliding block, but also can achieve a sealing effect and effectively prevent fluid leakage when the first connecting hole of the sliding block is a through hole, so that the accuracy and reliability of the testing process are improved.

The utility model discloses a fluid seal sealer, which belongs to the technical field of sealers and comprises a sealing connecting pipe, two connecting ring blocks are fixedly arranged in the sealing connecting pipe, the section of each connecting ring block is L-shaped, and a sealing washer is fixedly arranged on one side of each connecting ring block. The connecting ring block, the sealing washer, the threaded ring block and the metal corrugated pipe are arranged in the sealing connecting pipe, efficient and reliable sealing connection is achieved, the L-shaped section design of the connecting ring block is combined with the sealing washer, the sealing performance of the threaded connection position of the threaded ring block is guaranteed, fluid leakage is effectively prevented, and the sealing effect is good. Meanwhile, mounting and dismounting are more convenient and faster through the threaded connection mode, the maintenance efficiency is improved, the sealer is good in elasticity and flexibility due to the arrangement of the metal corrugated pipe, the sealer can adapt to pipeline deformation and vibration under different fluid working conditions, and then damage and leakage caused by working condition changes are effectively prevented.

The invention provides an expansion leaking stoppage device and a technological method. The expansion leaking stoppage device comprises a lifting nipple, the lower end of the lifting nipple is connected with a hanging load sensor through threads, the upper end of the lifting nipple is connected with a transition connector, and a drill rod is connected with the hanging load sensor through threads and connected with a connecting rod through a conversion connector. The lower end of the connecting rod is in threaded connection with the upper end of the expansion short section, the lower end of the expansion short section is in threaded connection with the torque short section, and the transition joint, the lifting short section, the drill rod, the conversion joint, the connecting rod, the expansion short section and the torque short section form an inner-layer tubular column; the upper end of the expansion pipe is fixed on the conversion connector through a shear pin, and the lower end of the expansion pipe is connected with the floating valve through floating valve external threads to form an outer-layer pipe column together with the floating valve. The turntable drives the inner-layer tubular column and the outer-layer tubular column to rotate into a well; the expansion pipe is tightly attached to the well wall of the open hole by pressurizing the expansion pipe nipple, well drilling open hole malignant leakage plugging is achieved, and therefore the problem of drilling fluid leakage is solved.

A fluidic tactile sensor includes a core and an elastic skin mechanically coupled to the core. A cell containing a fluid medium is formed in a space defined between opposing surfaces of the core and the elastic skin. A fluid leakage passage is formed in the core and is in fluid communication with the cell. An orifice member is fixed within the fluid leakage passage. The orifice member includes an orifice that is tuned to restrict fluid flow through the fluid leakage passage and limit a fluid leakage rate of the cell.

The fluid distribution device comprises a needle tube assembly, a liquid storage container and a piston, and the liquid storage container is arranged below the needle tube assembly and can axially move relative to the needle tube assembly; a fluid product and protective gas located on the upper layer of the fluid product are contained in the liquid storage container. The piston is movably arranged in the liquid storage container and seals the opening of the liquid storage container; wherein the liquid storage container can move towards the needle tube assembly under the actuation of external force, and during the actuation, the needle tube assembly pierces and extrudes the piston, so that the protective gas in the liquid storage container is discharged outwards through the distribution hole before the fluid product. According to the fluid distribution device, the protective gas is filled in the liquid storage container, so that the protective gas is discharged outwards before the fluid product at the moment when the drainage tube punctures the piston, fluid leakage at the moment of puncturing is avoided, and the accuracy of the distributed dosage of the fluid product is ensured.

The utility model relates to the technical field of pipeline connection, in particular to a pipe joint convenient for mounting a refractometer, which comprises a joint body, and a joint inner groove is arranged on the upper end face of the joint body to ensure that a sensor can be stably mounted in the joint so as to perform accurate measurement or monitoring work. The left side and the right side of the connector body are arranged to be planar installation end faces, two guide cavities are formed in the bottom of the connector inner groove in a bilateral symmetry mode, and an installation opening is formed in the middle of the bottom face of the connector inner groove and used for installing and fixing the refractometer. When the connector is used, the planar mounting end face is arranged at the side end of the connector body, and the pipe connecting groove is formed in the connector position of the pipe connector, so that the connector body is in butt joint with a pipeline to form a sealed folding opening, the butt joint sealing performance of the pipeline and the connector body is greatly improved, and the fluid leakage condition is prevented.

The present disclosure relates to a washable and reusable absorbent undergarment includes an absorbent assembly, including a wearer facing top layer, a moisture barrier layer, and one or more intermediate layers, wherein the absorbent assembly defines a circumferential outer edge and a circumferential margin extending along the circumferential outer edge. The circumferential margin includes one or more sealed margin portions, each sealed margin portion including a fluid seal providing a continuous sealing between the wearer facing top layer and the moisture barrier so as to hinder fluid leakage from an area inside the circumferential margin to the outside of the circumferential outer edge via the sealed margin portion; and the circumferential margin further including one or more unsealed margin portions.

To provide a magnetic refrigerator capable of reducing a risk of leakage of a process fluid and preventing heat input from a driving device to the process fluid.SOLUTION: The magnetic working apparatus is provided with a heat insulating tank 20, a working container 21 fixed in the heat insulating tank 20 and having an inflow port and an outflow port of a process fluid and filled with the process fluid inside, a magnetic working material 22 arranged in the heat insulating tank 20 and directly brought into contact with the process fluid to be heated by excitation and to be cooled by demagnetization, a magnetic field generating device 3 arranged in the heat insulating tank 20 to surround the side face of the working container 21 by entering the working container 21, and a magnetic working material moving structure 30 for moving the magnetic working material 2 in the heat insulating tank 20 in a prescribed direction to enter the working container 21 into the magnetic field generating device 3 and to demagnetize the working container 21.SELECTED DRAWING: Figure 2

The invention provides a work exchange type energy recovery device with a leakage rate detection function, which is provided with a special circulation hole, the circulation hole is not communicated with a relative low-pressure fluid inlet and a relative low-pressure fluid outlet of the energy recovery device, and an upper end cover and a lower end cover of the energy recovery device are not provided with leakage liquid guide-out channels. The shell, the upper end cover and the lower end cover form a leaked fluid collecting area, the circulating hole is externally connected with a leaked fluid discharging pipe, and a flow meter is arranged on the leaked fluid discharging pipe; the rotating assembly and the non-rotating assembly of the energy recovery device are provided with guide channels, and leaked liquid between the rotating assembly and the non-rotating assembly is guided into the leaked fluid collecting area or guided to the circulating hole. According to the invention, the fault detection problem that the most important fault high-pressure fluid leakage of the energy recovery device is too large can be solved through a low-cost scheme, and the abnormal condition can be accurately detected in real time.

Described herein are examples of pressure sensors, and methods to assemble pressure sensors. In some examples, a pressure sensor uses gauges attached to a sensor tube of a sensor body to detect a pressure of fluid flowing within the sensor tube. In some examples, the sensor tube helps to isolate the gauges from some of the stresses that the rest of the sensor body may experience due to intense fluid pressures. In some examples, the sensor body has a one piece design that increases durability. In some examples, a sensor adapter may be attached to the sensor body and / or hardened by one or more techniques to reduce the chance of fluid leakage and / or further increase durability. The gauges, the sensor body, and / or the sensor adapter can be enclosed within a sensor cover, and encased within a potting material, to protect and / or insulate the components.

The utility model discloses a two-way pneumatic valve with a ring groove valve core, which relates to the technical field of two-way pneumatic valves and comprises a valve seat, fixing pipes are arranged at two ends of the valve seat, a servo motor is mounted on the left side of the valve seat, and an output end of the servo motor extends into the valve seat and is provided with a valve rod. A connecting plate is installed on the right side of the valve rod, a valve element is installed on the right side of the connecting plate, a first flange is installed on the right side of the fixing pipe, and a sealing mechanism for reducing fluid leakage is arranged on the right side of the first flange. According to the two-way pneumatic valve with the annular groove valve element, the sealing strip is placed on one side between the first flange and the second flange, and then the sealing strip is extruded by a bolt when the first flange and the second flange are connected, so that a gap between the first flange and the second flange is filled; and therefore, the gap between the first flange and the second flange is reduced, and the situation of fluid leakage is avoided.

The utility model provides a kind of multi-channel valve, it is related to valve technical field, including four-way valve body, the inside of four-way valve body is equipped with ball sleeve, the inside of ball sleeve is embedded with ball valve, the top of ball sleeve and four-way valve body is respectively provided with first round hole and second round hole, the inside of first round hole and second round hole is embedded with valve stem, the surface of valve stem and located first round hole and second round hole are embedded with first sealing ring, the top of ball valve is provided with recess.This utility model, the multi-channel valve is set by multiple sealing rings, such as first sealing ring, second sealing ring, third sealing ring etc., and sealing ball pad etc. structure, can effectively prevent fluid leakage.At the cooperation of ball sleeve, ball valve and valve body, sealing structure can adapt to the pressure change under different working conditions, ensure that valve always maintains good sealing performance in long-term use process, improve the safety and reliability of fluid delivery.

Provided is a fluid leakage detection system and method for a marine hose that can accurately detect presence or absence of fluid leakage in various types of marine hoses. As a detection element (15) forming a loop circuit (17) connected to an IC tag (11) that is passive, conductive rubber or conductive paste whose electrical resistance value changes to a value equal to or greater than a reference by being impregnated with a fluid (L) is adopted, and the detection element (15) is caused to continuously extend in a longitudinal direction of the hose body between an inner surface layer (3) and a first reinforcing layer (4). The IC tag (11) is disposed on a surface of the marine hose (1). Electrical resistance value data (Dr) at the loop circuit (17) when the IC tag (11) is activated by transmission radio waves (R1) transmitted from a communication unit (19) is transmitted to the communication unit (19) via return radio waves (R2) transmitted from the IC tag (11) in response to the transmission radio waves (R1) and is input to the computation device (20). Presence or absence of leakage of the fluid (L) is determined in accordance with a magnitude of a difference between the electrical resistance value data (Dr) and reference resistance value data (Dc).

This utility model discloses a urea valve, including a urea valve body, a quick external connection mechanism, a connection stabilization mechanism, and a stabilization auxiliary mechanism. The quick external connection mechanism includes an outer fixed sleeve and a quick-clamp tube. The connection stabilization mechanism includes an outer rotating bracket and an extension bracket. The stabilization auxiliary mechanism includes an outer rotating sleeve and a rubber ring. The quick external connection mechanism achieves quick connection and disassembly of the urea valve through the plug-in design of the outer fixed sleeve and the quick-clamp tube. The double sealing design of the sealing ring and the encryption ring effectively prevents fluid leakage. The cooperation between the directional block and the directional groove ensures the correct connection direction and prevents incorrect installation. The connection stabilization mechanism adopts a mechanical locking design of the extension bracket and the embedded groove, which achieves automatic locking under the elastic force of the extension spring. The allowance groove allows the extension bracket to slide slightly longitudinally, providing adaptive adjustment space. The rotation unlocking design of the outer rotating bracket facilitates quick disassembly.

The utility model relates to the technical field of flow meters, in particular to a precise stainless steel flow meter shell which comprises a flow meter shell body, connecting pipes and sealing structures, the connecting pipes are arranged on the two sides of the flow meter shell body respectively, and the sealing structures are arranged on the outer walls of the connecting pipes. The sealing structure comprises an outer cylinder, a sliding rod, a spring, an annular plate, a sealing ring and a rubber pad. The outer cylinder moves along the outer wall of the sliding rod in the moving process, the outer cylinder drives the spring to be compressed at the same time, at the moment, elastic force generated by the spring acts on the annular plate, the annular plate has force in the direction of the rubber pad, the force acts on the rubber pad to enable the rubber pad to deform, and the annular plate always acts on the rubber pad to deform. A gap between the outer cylinder and the flow meter shell is filled for sealing, so that the sealing performance of the flow meter shell is improved, and the problem that in the prior art, the sealing between the flow meter shell and the connecting pipe is prone to corrosion, a gap is formed between the flow meter shell and the connecting pipe, and fluid leakage is caused is solved.

The utility model relates to the technical field of valves, and discloses a breakable valve for loading and unloading fluid, which comprises a valve body, two ends of the valve body are respectively connected with a material guide pipe and a material discharge pipe, opposite ends of the material guide pipe and the material discharge pipe extend to the inner side of the valve body, and plugging mechanisms which are symmetrically arranged are arranged on the inner side of the valve body. The blocking mechanism is located at the end of the material guiding pipe and the end of the discharging pipe and comprises a blocking plate, a fixing frame, a mounting frame, a supporting spring, a rotating shaft, a mounting base, a supporting rod and a connecting frame. The blocking plates in the blocking mechanism rotate and reset to the vertical state under the action of the supporting spring, the rotating shaft, the mounting base, the mounting frame, the supporting rod and the connecting frame, so that the opposite ends of the two blocking plates make contact with each other, the feeding port or the discharging port is blocked, separation of the valve body and a pipeline can be achieved in a short time, and the sealing effect is good. Therefore, fluid leakage accidents caused by unforeseen circumstances are effectively avoided.

This utility model discloses a tee with a filtering function that is easy to connect, relating to the field of tee technology. The utility model includes a main pipe, to which a branch pipe is connected and communicates. The inner wall of one end of the main pipe and the inner walls of both ends of the branch pipe are provided with placement grooves. A filter plate and a positioning component that cooperates with the filter plate are placed inside the placement grooves. The positioning component includes an annular plate threaded into the placement groove, and the inner wall of the annular plate has multiple grooves. The filter plate of this utility model is positioned by a guide rod and locked by the thread of the annular plate, allowing for quick disassembly, cleaning, or replacement without tools, reducing the cumbersome maintenance of the filter device. The first and second sealing gaskets in the placement groove cooperate with the annular plate to prevent leakage at the edge of the filter plate. The sealing rings and sealing caps at the ends of the main pipe and branch pipe combine to achieve airtightness at the pipe connection, reducing fluid leakage or foreign object intrusion.

The utility model relates to the technical field of new energy, particularly provides a cover plate assembly and a battery, and aims to solve the technical problem of micro short circuit caused by the fact that overflowing electrolyte flows between a pole and a cover plate in the prior art. Therefore, the cover plate assembly comprises a cover plate, a pole assembly arranged on the cover plate and a liquid injection hole located in one side of the pole assembly, the cover plate comprises a blocking piece located between the liquid injection hole and the pole assembly, and in the width direction of the cover plate, the cover plate is provided with a drainage groove located in one side of the blocking piece. The cover plate is provided with the drainage groove, so that overflowed electrolyte can be blocked by the blocking piece and flows to the drainage groove on one side of the blocking piece to avoid the pole assembly, the electrolyte is effectively prevented from flowing between the pole and the cover plate to generate micro short circuit to cause liquid leakage, and the use safety of the battery is ensured.

The invention relates to a fluid conveying device and a fluid conveying system. The fluid conveying device comprises a conveying pipeline; the shock excitation assembly comprises a first shock excitation unit, the first shock excitation unit is arranged at the first end of the conveying pipeline, and the shock excitation assembly is used for driving the conveying pipeline to vibrate; the vibration eliminating assembly comprises a first vibration eliminating unit, the first vibration eliminating unit is arranged at the second end of the conveying pipeline, and the vibration eliminating assembly is used for eliminating vibration of the vibration pipeline; the conveying pipeline is used for generating one-way traveling waves pointing to the second end of the conveying pipeline from the first end of the conveying pipeline under the action of the first shock excitation unit and the first shock absorption unit, and fluid in the conveying pipeline is driven to flow from the first end of the conveying pipeline to the second end of the conveying pipeline. Based on the scheme, fluid conveying can be achieved, the structure is simple, the performance is stable, the service life is long, miniaturization of the device is facilitated, the problem of fluid leakage caused by the problem of sealing performance does not exist, and safety is higher.

The invention discloses an electrical impedance-based high-pressure injector intravenous injection leakage detection alarm device, which comprises a measuring electrode band, a high-pressure injector and a detection alarm device, and is characterized in that the measuring electrode band comprises a flexible ring band, a measuring electrode and a data line, and the detection alarm device is integrated with a power supply module, a data processing module and an alarm module. The device has the beneficial effects that the device is small in cell damage, low in price, high in usability, safe, reliable and small in size, and can be integrated in a high-pressure injector to be used in linkage with the high-pressure injector; high-pressure injection liquid leakage electrical impedance data and normal data are learned in advance through a trained improved support vector regression model prediction algorithm model, and an alarm threshold point is predicted, so that the accuracy of an alarm threshold can be effectively improved, injection liquid leakage of a high-pressure injector can be well detected, an alarm can be automatically given, and injection operation can be stopped. Various complications and sequelae caused by liquid leakage can be well prevented, and double guarantees are provided for patients and hospitals.

The turbomachine compressor includes a final stage of vanes having tip shrouds within circumferential grooves in the inner casing. Each tip shroud defines a downstream opening with the aft wall of the groove. Below each tip shroud, an outlet channel extends to a high-pressure packing seal (HPPS) cavity to reduce fluid leakage from downstream to an upstream region of the final stage of vanes. A first seal within the circumferential groove diverts compressed gas entering the downstream opening into the HPPS cavity. The outlet channels can extend axially or radially, and a second seal may be included between the outlet channel and the downstream opening for the radial outlet channel.

The utility model discloses a quick-release end plate structure for flat sheet membrane filtration equipment. The quick-release end plate structure is provided with an integrated thrust component, a bearing plate, an adapter and a check ring, the integrated thrust part comprises a thrust part, a reinforcing part and a connecting part, a plurality of through holes for water to flow in and out are formed in the peripheral surface of the reinforcing part, the connecting part is located at a center hole of the integrated thrust part, and the connecting part is provided with a first end part and a second end part; the bearing plate is matched and attached to the thrust part; the adapter is arranged in the reinforcing part, one end of the adapter is connected with the second end part of the connecting part, and the other end of the adapter is connected with the adjacent membrane filtration assembly; the check ring is enclosed by a plurality of baffle rings, an annular groove is formed in the check ring, an elastic locking ring is arranged in the groove, and the elastic locking ring is used for locking the position between the check ring and a membrane shell of the flat membrane filtration equipment. According to the utility model, complicated fastening operation is not needed, so that the working efficiency is improved; fluid leakage is effectively prevented, the sealing performance of the flat sheet membrane filtering equipment is ensured, and the filtering effect is improved.

The utility model relates to a self-locking pressure gauge joint, which comprises a joint body, a sealing block, a spring seat and a spring, a through flow guide hole is arranged in the joint body, a baffle ring is arranged on the wall of the flow guide hole and divides the flow guide hole into a first hole and a second hole which are communicated with each other, and a first internal thread which is matched and connected with a pressure gauge is arranged on the wall of the first hole; first external threads are arranged at the end, away from the first hole, of the connector body. The sealing block is T-shaped and comprises an end plate and a flow guide pipe which are connected with each other; the flow guide pipe is slidably installed in a center hole of the baffle ring, and a first fluid passing hole is formed in the side wall of the flow guide pipe. The end plate is arranged in the second hole, and a gap is reserved between the end plate and the hole wall of the second hole; the spring seat is fixed to the end of the connector body and located in the second hole, and a second fluid passing hole is formed in the spring seat. The spring is pressed between the end plate and the spring seat; compared with the prior art, the pressure gauge stop valve can effectively prevent fluid leakage when a pressure gauge is replaced, and compared with a pressure gauge stop valve, the pressure gauge stop valve is simpler in structure and lower in manufacturing cost.

The utility model discloses an atomizer and an electronic atomization device. The atomizer comprises a shell assembly, an atomization channel is formed in the shell assembly, a first liquid suction cavity and a second liquid suction cavity which are distributed at intervals along the axis of the atomization channel are formed in the shell assembly, and the first liquid suction cavity and the second liquid suction cavity are both communicated with the atomization channel; the atomization assembly is arranged in the atomization channel; the first liquid suction part is arranged in the first liquid suction cavity; the second liquid suction part is arranged in the second liquid suction cavity; a first liquid suction opening, communicated with the first liquid suction cavity, of the atomization channel is located above the atomization assembly, and a second liquid suction opening, communicated with the second liquid suction cavity, of the atomization channel is located below the atomization assembly. By means of the mode, the atomizer can avoid the risk that due to condensate or leakage, the taste is degraded or the main machine is damaged, and the quality of the atomizer can be effectively improved.

The utility model belongs to the technical field of medical treatment, and particularly relates to an operating room intraoperative liquid leakage protection and collection pad which comprises a pad body. The top of the cushion body is fixedly connected with a sponge layer; a first groove is formed in the side wall of the cushion body; the side wall of the first groove is connected with a water absorption pad in a sliding manner; a plurality of grid holes are formed in the top of the water absorption pad; the plurality of grid holes are arranged in a partitioned manner; a second groove is formed in the side wall of the cushion body; the side wall of the second groove is slidably connected with an anti-seepage pad. The anti-seepage pad is used for preventing seepage; the sponge layer is fixedly connected to the top of the cushion body, a patient can lie comfortably through the sponge layer, when an operation is carried out, the patient lies on a sickbed, the patient is inconvenient to lift up to replace the cushion body, the cushion body full of liquid can be conveniently replaced by replacing the water absorption cushion and the anti-seepage cushion, and time can be saved.

The utility model relates to the technical field of fluid pressure measurement, in particular to a fluid pressure measurement sensing device which comprises a measuring tube, an inlet end and an outlet end, the outlet end is fixedly connected to the lower end of the measuring tube, and a detachable structure of the fluid pressure measurement sensing device is arranged on the outer wall of the measuring tube. The outer side of the measuring tube is provided with a fluid pressure measuring elastic diaphragm protection structure. According to the fluid pressure measurement sensing device, when the sensor main body is installed, the sensor main body is tightly plugged into the sealing groove in a seam fit mode, then the outer buckling cover screwed through threads abuts against the sensor main body to achieve fixation, and therefore when the pressure intensity of fluid in the measuring pipe is too large and exceeds the bearing limit of the elastic membrane, the elastic membrane is fixed; the limiting block can abut against the exceeding deformation amount of the elastic membrane forwards, it is guaranteed that fluid leakage caused by breaking through the elastic membrane is avoided, the sensor body can be detached from the outer side of the measuring tube very conveniently, impurities, close to the inner wall of the measuring tube, of the elastic membrane can be cleaned, and the service life of the elastic membrane is prolonged.

The invention relates to a method (700) for detecting fluid leakages of a vehicle braking system (100; 200; 300; 400). The braking system includes: - at least one hydraulic or electro-hydraulic actuator (1) of a disc brake (2), at least one electronic processing unit (10, 10', 20, 20' ) connected to the at least one hydraulic or electro-hydraulic actuator for receiving data, representative of a hydraulic pressure measurement (P) of the actuator and a stroke measurement (x) of an actuator piston, associated with one or more braking events during a braking detection time interval. The method includes the following steps: - enabling (701), by at least one electronic processing unit, a fluid leakage monitoring block (3) following the detection of at least one braking event in the braking detection time interval; the fluid leakage monitoring block includes a supervisory block (31), an average stiffness monitoring block (32) of the braking system and a monitoring block of a working area (33) of the braking system; - receiving (702), by the fluid leakage monitoring block, at least a first hydraulic pressure measurement of the actuator (Ps) and at least a first measurement of the stroke (xs) of the actuator piston relating to one of these one or more braking events and a required pressure value (Pv) from the at least one electronic processing unit; - enabling (703), by the supervisory block, the average stiffness monitoring and working area monitoring blocks when the required pressure value is greater than or equal to a first predetermined enabling pressure value (Pl); - validating (704), by the supervisory block, this braking event of the one or more braking events if the required pressure value is greater than a second predetermined enabling pressure value (P2) during at least one predetermined enabling time interval (T2); - identifying (705), by the average stiffness monitoring block, a linear function (f (x) ) suitable for defining a relationship between the at least one first hydraulic pressure measurement of the actuator as a function of the at least one first measurement of the stroke of the actuator piston; an angular coefficient of the identified linear function (f (x) ) represents the average stiffness of the braking system; - generating (706), by the average stiffness monitoring block, a first parameter (STIFFNESS) based on a comparison between the angular coefficient of tthhee identified linear function with a predetermined threshold stiffness value (Kth); - generating ( 707 ), by the working area monitoring block, a second parameter (AREA_FLAG) representative of actuator pressure and actuator piston stroke values not allowed when the at least a first hydraulic pressure measurement of the actuator is less than or equal to a predetermined threshold pressure value ( Pth) and the at least a first piston stroke measurement is greater than or equal to a predetermined threshold position value (xth); - processing ( 708 ), by a counter block ( 34 ) of the leakage monitoring block, the first and second parameters to generate a numerical counter value ( Ilk) suitable to be compared with a numerical threshold value (Nth) to generate information (LI ) representative of a presence or absence of fluid leakage from the vehicle braking system.