110 results about "Liquid pressure" patented technology

This application relates to a method, system, and storage medium for airtightness testing of a diaphragm accumulator, relating to the field of accumulator technology. The method includes acquiring preparation completion trigger information of the diaphragm accumulator; acquiring test plan information of the diaphragm accumulator based on the preparation completion trigger information; controlling a preset hydraulic system to perform a liquid filling test on the diaphragm accumulator according to the test plan information to determine pressure detection information; analyzing the pressure detection information and the test plan information to determine the liquid pressure information of the hydraulic system; determining whether the pressure detection information meets the requirements of the liquid pressure information; if it does not meet the requirements, issuing a warning according to a preset non-compliance warning message; if it meets the requirements, issuing a warning according to a preset compliance warning message. This application improves the accuracy of airtightness testing of diaphragm accumulators.

The present application relates to a kind of arthroscopic approach water leakage prevention device, including the elastic cover with dome structure, the sealing valve being arranged in the center position of cover and negative pressure suction mechanism, sealing valve has the conical hollow structure extending to base direction and gradually reducing outer diameter, reverse compensation sealing is realized using joint cavity infusion liquid pressure, cover base edge is equipped with flexible sealing skirt, by the negative pressure interface connection external negative pressure source, so that cover and skin form negative pressure sealing space, the device can be connected in series by negative pressure interface multiple occluder, and equipped with detachable guide rod auxiliary coaxial positioning.The present application uses non-insertion type surface adsorption occlusion, effectively solve the space interference and tissue damage problem in multiple tunnel operation, realize the dynamic water stop of pressure self-adaption, with the advantages of simple operation, sealing stable, strong dissection adaptability, can significantly improve the operation visual clarity and maintain joint cavity pressure stability.

The utility model discloses a kind of transverse underground monitors, including inductor, the number of inductor is 4, 4 inductors are connected by end cap, form a cylindrical structure, inductor inside is provided with cavity, one side is provided with the liquid inlet that is linked with cavity, pressure transmission pipeline is set on liquid inlet, liquid is injected into the cavity of inductor by pressure transmission pipeline and keeps basic pressure, pressure sensor is set on pressure transmission pipeline, pressure sensor is used to monitor the liquid pressure in inductor, temperature sensor and moisture sensor are also set on inductor, temperature sensor and moisture sensor are used to monitor the temperature and moisture information of stratum, the stratum temperature monitored can correct the pressure change caused by temperature change, the utility model is monitored by inductor the longitude and latitude direction stress change in deep place below the position where monitor is located, real-time monitoring is carried out to the environment such as coal mine, roadway, tunnel, seismic fracture zone prone to geological disasters.

The application discloses a kind of pressure-maintaining electric sampler and its use method and related application.The sampler driving part is connected with valve core to drive valve core up and down movement, valve core is connected with the valve and drives the valve up and down movement to open or close the first liquid inlet passage for communicating central hole on body assembly;Second liquid inlet passage is opened in liquid storage tank and communicated with the first liquid inlet passage, ball rod is compressed spring under the liquid pressure from the first liquid inlet passage and opens second liquid inlet passage to make liquid enter liquid storage tank, and after sampling is completed, second liquid inlet passage is closed under the restoring force of spring, after sampling is completed, liquid pressure in liquid storage tank acts on ball rod to maintain the constancy of liquid pressure in liquid storage tank, compared with traditional sampler, the authenticity of in-situ pressure and other parameters of produced sample liquid is guaranteed and faithfully lifted to ground, the accuracy of reservoir physical property detection is improved, valuable data reference is provided for understanding real formation reservoir dynamic condition.

This utility model belongs to the field of pipeline cleaning, and specifically relates to a liquid storage system with unclogging function. To facilitate unclogging, this utility model proposes a liquid storage system with unclogging function. The system includes a liquid storage container, a level transmitter, and a backflushing device. The liquid storage container is connected to the level transmitter via a liquid pressure-conducting pipeline. The liquid pressure-conducting pipeline is equipped with a first control valve and a second control valve. The backflushing device includes a cleaning agent container and a backflushing pipeline. Both ends of the backflushing pipeline are connected to the cleaning agent container and the hydraulic pressure-conducting pipeline, respectively. The connection point between the backflushing pipeline and the hydraulic pressure-conducting pipeline is located between the first control valve and the second control valve. The backflushing pipeline also includes a liquid pump and a first cleaning control valve. The addition of the backflushing device allows for backflushing of the first control valve of the liquid pressure-conducting pipeline and the connection point between the hydraulic pressure-conducting pipeline and the liquid storage container, thereby facilitating unclogging.

This utility model relates to the field of flexible braking technology, specifically to a flexible low-speed brake, comprising a low-speed brake and a flexible hydraulic station. The low-speed brake includes a base, a bracket, two cylinder units, a flow divider, and a main flow pipe. The flexible hydraulic station is made of an all-aluminum structure, which is corrosion-resistant, lightweight, and has good heat dissipation. The cylinder units are equipped with disc spring housings, which compress the disc springs through liquid pressure, generating a reliable force to produce stable and reliable flexible braking force on the disc braking system. The structure has been improved to achieve a novel structure and performance, with comprehensive enhancements in both performance and size, making it a modern machine structure suitable for use. Through the coordination of the flexible hydraulic station and the low-speed brake, this device can slowly activate the brake disc, thereby performing flexible braking and avoiding inertial damage to equipment and transported materials during braking.

The present application provides a shapeable catheter (10) comprising a first stiffness layer (50) and a second stiffness layer (60) defining an annular lumen (70) for receiving a liquid, the first stiffness layer being made of an elastic material having a first stiffness, the second stiffness layer being made of a material having a second stiffness, the second stiffness being greater than said first stiffness, and a support layer arranged adjacent to the first stiffness layer, the support layer having a recess on a surface facing the first stiffness layer, the shapeable catheter (10) having a shaped state and an unshaped state and changing between the two states in response to a liquid pressure within the annular lumen (70), in the shaped state the first stiffness layer (50) assumes a deformed state partially embedded within the recess of said support layer mechanically interlocking the first stiffness layer with the support layer together, in the unshaped state the first stiffness layer assumes an undeformed state allowing a relative displacement between said support layer.

The utility model provides a kind of comprehensive demonstration device based on fluid pressure and flow rate relationship, and the device is mainly composed of four modules integrated on bearing main body: gas pipeline effect demonstration module, gas pressure and flow rate relationship demonstration module, liquid pressure and flow rate relationship demonstration module and wing lift principle demonstration module.Bearing main body includes bottom plate and pedestal fixed thereon, pedestal cross section is triangle, with three sides.Gas pipeline effect, gas pressure and flow rate relationship, liquid pressure and flow rate relationship three demonstration modules are respectively installed on the three sides of pedestal, and wing lift principle demonstration module is built-in in the hollow part on pedestal.The device is integrated with multiple demonstration modules related to fluid pressure and flow rate relationship on different sides of pedestal, forming compact portable whole.This not only facilitates carrying and operation demonstration, but also effectively reduces the burden of teachers, helps students to clearly and comprehensively understand core knowledge, and significantly improves teaching effect.

The present application relates to the field of parts of submarine sewage system, and discloses a manually adjusted constant pressure difference blow-off valve. In the state of dynamic balance, the elastic force of the adjusting spring is equal to the elastic force of the auxiliary spring and the pressure of the second piston cavity; the liquid pressure received by the upper part of the first piston is equal to the elastic force of the main spring and the pressure of the piston in the rear cavity of the main valve; and the medium pressure of the second piston cavity and the rear cavity of the main valve is the same. By setting the pilot valve as a sensitive element, the signal of the hand wheel is amplified, thereby expanding the pressure adjustment range of the rear cavity of the main valve; and the outlet pressure of the valve connected with the rear cavity of the main valve is continuously adjustable, so that the blow-off pressure of the valve outlet can be adjusted according to the different diving depth of the submarine, and the appropriate sewage air supply pressure can be selected. By adopting the constant pressure difference blow-off valve, the air supply pressure and blow-off speed of the blow-off sewage are reduced, the amount of compressed air discharged to the outside of the hull is reduced, and the vibration of the sewage pipeline and the sewage transient noise can be effectively reduced.

This utility model relates to the technical field of sealing mechanisms and discloses a sealing mechanism for the left side of an oil passage, including a mounting plate, a sealing plate on one side of the mounting plate, a conical platform on the sealing plate, a rubber sleeve fixedly fitted on the outer wall of the conical platform, a connecting rod fixedly connected between the side wall of the mounting plate and the side wall of the sealing plate, a clamping assembly between the mounting plate and the sealing plate, the clamping assembly pressing against the inner wall of the oil passage, and a buffer assembly between the sealing plate and the conical platform to buffer the impact force received by the conical platform. The buffer assembly, consisting of a rubber plate, a fixed cover, a fixed rod, a movable block, an arc-shaped spring, and a second connecting rod, can absorb the impact force when the conical platform is impacted by the deformation of the arc-shaped spring. Compared with devices in the prior art that do not have an effective buffer structure, this greatly improves the sealing mechanism's ability to resist liquid pressure impacts and reduces sealing failures caused by impacts.

This invention discloses a fiber Bragg grating level sensor based on liquid pressure conversion, comprising a fiber Bragg grating demodulator, a 2×1 fiber coupler, a transmission fiber, and a sensing unit. The sensing unit consists of a strain-sensing fiber Bragg grating, a temperature-compensated fiber Bragg grating, a sealed cylinder, a support beam, a pressure block, a pressure tension frame, a sealing membrane, and a stop. The pressure block and the pressure tension frame convert liquid level changes into longitudinal displacement changes, causing axial strain in the strain-sensing fiber Bragg grating. This results in a drift in the center wavelength of the strain-sensing fiber Bragg grating, and the liquid level height of the container is measured by monitoring this wavelength change. This invention eliminates the influence of temperature on the liquid level measurement results through a temperature-compensated fiber Bragg grating, offering advantages such as a large measurement range, good practicality, simple structure, low cost, good stability, high sensitivity, and safety and reliability, meeting the needs of measuring liquid levels in large storage tanks and other applications.

The application relates to a microstructure die casting die for long-distance filling and high-performance manufacturing of super-large thin-wall castings and a forming method thereof, the die casting die comprising an outer die and a detachable inner die with a microstructure designed on a die cavity surface; the microstructure is any one of a micro-flow guide rib structure, a micro-nano groove structure for resisting alloy liquid turbulence, and a composite structure combining the micro-flow guide rib structure and the micro-nano groove structure for resisting alloy liquid turbulence, and is used for containing a heat-insulating lubricating silicone oil layer; the die casting forming method comprises the following steps: preparing alloy liquid; installing the die casting die; preheating the detachable inner die; spraying the heat-insulating lubricating silicone oil; pressure filling the alloy liquid; alloy liquid pressure keeping, solidification and cooling; and opening the die to take out the product. The die casting die surface structure design and the heat-insulating lubricating design can solve the industry bottleneck problems of insufficient filling distance of super-large integrated thin-wall die castings, many defects of the far-end castings in the filling process, and poor mechanical properties through flow guiding, alloy liquid thinning, turbulence resisting, and heat-insulating lubricating effects.

This utility model relates to the field of hose technology, and in particular to a high-strength hose with a double-layer woven structure. It includes a main structure with a double-layer woven structure; a wear-resistant structure, which is evenly spaced on the outer side of the main structure and protrudes from the outer surface of the main structure; and a groove structure, which is also evenly spaced on the outer side of the main structure, allowing for convenient coiling of the main structure. This utility model uses a double-layer woven structure as the main reinforcing layer of the hose, effectively solving the problems of warp and weft slippage and excessive diameter expansion of existing single-layer woven layers under high pressure. The inner and outer woven layers, combined with the middle rubber layer, form a composite system that synergistically bears pressure, significantly dispersing and absorbing internal liquid pressure, suppressing displacement and deformation of the woven threads, thereby greatly improving the overall structural stability and burst resistance of the hose, and preventing the risk of tearing or rupture under high pressure.

This invention relates to the field of robotic arm technology and discloses a foldable robotic arm, including a first mounting frame, a second mounting frame, a servo motor mounted on one end of the first mounting frame, a folding support mechanism, and a hydraulic locking mechanism. Its structure includes a hollow shell fixedly mounted on one end of the second mounting frame and having a hollow internal structure; a piston plate placed inside the hollow shell and capable of directional movement under liquid pressure; and a second locking plate that moves with the piston plate and engages with the first locking plate to lock it in place. This foldable robotic arm can achieve a 360-degree rotation, thus achieving a fully overlapping folding effect, reducing the space occupied when the equipment is not in use. Furthermore, the device can angle-lock the main support arm and the auxiliary support arm used for load-bearing, reducing the torsional pressure on the drive structure after the support arm stops moving, thereby improving the stability of the equipment during operation.

The application discloses a device for deep slurry in-situ sampling and testing of a water interception curtain, which comprises a slurry storage device, a guide head is detachably arranged at the bottom of the slurry storage device, a sealing body is arranged in the slurry storage device, the top of the sealing body is connected with one end of a connecting line, the other end of the connecting line extends out of the top of the slurry storage device and is connected with a data acquisition instrument; the slurry storage device, the conical base, the sealing body, the connecting line, the liquid pressure sensor and the data acquisition instrument are combined to realize the functions of deep slurry sampling of a water interception curtain groove, efficient sealing of the slurry storage device, in-situ online monitoring of slurry pressure, in-situ viscosity detection, accurate measurement of testing depth and real-time data acquisition, improve the accuracy of slurry extraction and the accuracy of performance testing of the deep slurry of the groove, guarantee the construction quality and water interception effect of the water interception curtain, and solve the technical problems that slurry in different positions and depths in the groove of the water interception curtain is difficult to sample, and slurry in-situ pressure and in-situ viscosity cannot be tested.

This invention provides a measurement system and method for the flow intensity distribution of a spray field, relating to the field of spray measurement technology. The system includes: a spray source for spraying a spray liquid; a spray measurement array layer disposed downstream of the spray source, comprising a capacitance measurement structure and a fluid sampling array, wherein the capacitance measurement structure measures the change in dielectric properties caused by the spray liquid at the inlet region of the fluid sampling array to obtain spatial relative distribution information of the spray flow intensity; the fluid sampling array is used to introduce the spray liquid into its region; a pressure measurement structure measures the pressure signal within the fluid sampling array to obtain absolute quantitative information of the spray flow intensity; and a processor reconstructs the spatial distribution of the spray field intensity based on the spatial relative distribution information and the absolute quantitative information. This invention can ensure the measurement accuracy of the spray field flow intensity while achieving high temporal resolution and real-time quantitative measurement of the flow field intensity distribution.

This invention belongs to the field of building construction technology, specifically a support method for prefabricated retaining wall steel structure based on old road surfaces. The support method is as follows: Step 6, connect the connecting mechanism on the retaining wall to the precast pile head installed on the pile foundation. This support method for prefabricated retaining wall steel structure based on old road surfaces, by setting a connecting mechanism, facilitates the fixed connection between the retaining wall and the precast pile head, and also facilitates disassembly. By transporting hydraulic oil from the inlet pipe to the inlet port and injecting it into the piston cylinder, the hydraulic oil uses liquid pressure energy to drive the piston rod to move outward, and the hydraulic oil originally present in the piston cylinder is discharged through the outlet pipe, so that the piston rod is inserted into the groove. Then, the rotation of the servo motor output shaft drives the screw to rotate. The rotation of the screw drives the threaded block to move down along the inner wall of the fixed housing, thereby driving the locking post to move down into the locking groove, thus realizing the locking post and the locking groove.

The application discloses a piston compressor driven by liquid pressure, which integrates hydraulic and gas compression components in one cylinder, drives a hydraulic piston by rotation of a crankshaft, and then drives a gas piston by using the incompressible characteristics of liquid, fills the upper part of the gas piston with sealing liquid, fills the gap between sealing rings, and reduces gas leakage. The structure can also combine lubrication and hydraulic medium, store hydraulic oil in the crankcase, use the hydraulic oil as lubricating medium, and further reduce the size of the equipment by adopting an oil pump built-in mode. Meanwhile, the piston compressor can be combined into a multi-stage compression form to further improve the discharge pressure. The piston compressor can be used for high-pressure hydrogen filling piston compressors of gas stations and energy storage stations, and can also be used in other high-pressure and super-high-pressure gas compressor fields.

The utility model discloses a kind of gas-liquid pressure boost automatic tool changing electric main shaft, including main shaft and the tool shank component being set on the one end surface of the main shaft, cylinder device is set on the other end surface of the main shaft, the cylinder device includes the connecting body being set on the other end surface of the main shaft, first cylinder piece is set on the end surface of the connecting body, second cylinder piece is set on the end surface of the first cylinder piece, end cover is set on the second cylinder piece, unloading tool inlet is set on the end cover, the second cylinder piece and the end cover form inlet compression cavity, the unloading tool inlet and the inlet compression cavity are connected, and the second cylinder piece is provided with pressure boost oil cavity.In the utility model, its structure and volume and weight are improved, which is beneficial to the installation of corresponding supporting equipment.

The invention relates to a filter unit (1) for the filtration of liquid pressure media, comprising a filter block (10) into which a first filter element (11) and a second filter element (12) are inserted, wherein a first valve element (13) and a second valve element (14) are further provided, which are fluidically connected to the filter elements (11, 12), and wherein the filter block (10) has an inlet (15) through which the pressure medium can enter the filter block (10) and which is fluidically connected to the valve elements (13, 14), and wherein the filter block (10) has an outlet (16) which is connected to the filter elements (11, 12). According to the invention, the filter block (10) has a single backwash port (17) which is connected to the valve inserts (13, 14) in such a way that the filter inserts (11, 12) can be backwashed when the valve inserts (13, 14) are connected accordingly and the backwash port (17) serves as an outlet.

This invention discloses a deep-ditch slurry sampling tube and sampling method. The sampling tube includes a sampling tube body, a storage chamber, a baffle, a fixing block, a piston, and a rubber gasket. The fixing block is fixed to the bottom of the sampling tube body, and the baffle is symmetrically fixed below the sampling tube body, forming a piston movement chamber between the baffle and the fixing block. The fixing block has a liquid inlet, and one end of the piston passes through the liquid inlet and is installed in a T-shape within the piston movement chamber. A rubber gasket is fitted onto the piston. The sampling method includes a slurry feeding stage, a slurry storage stage, a tube lifting and sealing stage, and a discharge and sampling stage. This invention utilizes the slurry's own liquid pressure to drive the piston for automatic slurry feeding, utilizes the principle of communicating vessels to achieve quantitative sampling, and adopts a self-weight sealing and bottom-contact discharge structure. It solves the technical problems of deep-ditch slurry that cannot be sampled with traditional sampling spoons, poor sample representativeness, and operational safety hazards. It has the advantages of simple structure, convenient operation, uniform sampling, and good representativeness.

The application discloses a kind of high ground stress test methods of deep-buried tunnel surrounding rock.It includes the following steps, step one: after drilling is completed, installation connection and lowering of each instrument equipment in high ground stress test device based on ultra-deep drilling are completed;Step two: pressure equipment is pressurized, high-strength liquid pressure is formed, high-strength liquid pressure reaches hole bottom piston through flexible high-strength pressure pipe, pressure gauge and built-in flexible high-strength pressure pipe;Step three: with the pressure input of pressure equipment, flexible cladding plate on both sides of piston is pressed and moves laterally, and is well cladded with drilling hole wall and gradually applies pressure to drilling hole wall;Step four: the compression deformation of drilling hole wall rock mass after being pressed is measured by micrometer;Step five: P~s characteristic curve is obtained;Step six: ground stress of drilling hole wall rock mass test point is obtained.The application has the advantages of being able to measure and determine ground stress before deep-buried underground chamber or tunnel excavation construction.

The utility model relates to a fountain landscape technical field, concretely relates to a kind of wind energy storage fountain landscape, including the infusion tube with one end being open end, the other end being closed end and the spray head being installed on infusion tube with interval evenly, further including the infusion tube open end is provided with the liquid pressure component for the liquid into infusion tube and pressurized liquid in infusion tube is sprayed by spray head, liquid pressure component is connected with the output shaft of gearbox installed on support, gearbox top rotatably arranged with pivot one and connecting shaft, connecting shaft lower end passes through gearbox and is connected with its input end, pivot one and connecting shaft between being provided with torque increasing component, pivot one top end is equipped with wind speed cup rotating frame.The utility model is driven by wind energy, without external power supply, can realize liquid pressurization and injection, effectively reduce energy consumption, meet the development concept of green environmental protection.

This invention discloses a multi-stage pressure-reducing regulating valve, relating to the field of pressure-reducing valve technology. The regulating valve includes a valve body, a multi-stage sleeve, an elastic pressure-reducing component, a valve seat, and a valve core. During operation, liquid enters the valve body. By manually rotating the valve core, the flow channel on the valve seat is opened. After the liquid passes through the flow channel, it undergoes multi-stage pressure reduction by the multi-stage sleeve. If the liquid pressure exceeds a set threshold, the liquid exerts an upward thrust on the elastic pressure-reducing component, causing the elastic pressure-reducing component to separate from the multi-stage sleeve. This increases the liquid flow area while simultaneously reducing pressure in multiple stages, thereby further achieving the pressure reduction effect. When the inlet pressure returns to normal, the elastic pressure-reducing component resets downward under its own elastic force, re-fitting tightly with the multi-stage sleeve and restoring the original multi-stage pressure-reducing channel structure. This invention achieves multi-stage pressure reduction through the cooperation of the multi-stage sleeve and the elastic pressure-reducing component.

A three-dimensional object printing apparatus capable of reducing variation in ink ejection characteristics in an inkjet head. The three-dimensional object printing apparatus has: a base; an arm supported by the base; a liquid ejection head fixed at a top end of the arm and ejecting a liquid toward a workpiece; a liquid storage portion storing the liquid; a supply flow path communicating the liquid storage portion and the liquid ejection head and supplying the liquid from the liquid storage portion to the liquid ejection head; and a pressure adjustment valve provided midway in the supply flow path and adjusting the pressure of the liquid supplied to the liquid ejection head. The arm has N (N ≥ 3) movable portions that three-dimensionally change the position and posture of the liquid ejection head. The pressure adjustment valve is fixed to the arm.

This application discloses an accumulator pressure regulating mechanism, relating to the field of accumulators. It includes an accumulator body, an air bladder, an mounting tube, an exhaust assembly, and an inflation assembly. When the pressure inside the air bladder increases, it causes the sealing disc to compress the spring, allowing the exhaust hole on the outer surface of the mounting tube to leak out, thus venting the excessively pressurized gas and reducing the internal gas pressure. As needed, the rotating block can be rotated, moving through the engagement of an internal and external threaded tube to adjust the preload of the compression spring. This changes the force exerted by the compression spring on the sealing disc against the mounting tube, adjusting the internal pressure to the threshold required for exhaust. When the pressure inside the air bladder is too low, the liquid pressure inside the storage tank causes the push rod to move into the mounting tube, changing the pressure sensor reading. This, in turn, activates the air pump via a control component, inflating the air bladder through the inflation tube to regulate the internal pressure.

This utility model relates to the field of slope reinforcement technology, specifically to a thermometer-type anchorage component gripping force measuring device. It includes a pressure-sensing jacket, a fiberglass tube, and an indicating liquid. The fiberglass tube containing the indicating liquid is housed inside the pressure-sensing jacket. When subjected to circumferential pressure, the pressure-sensing jacket deforms, compressing the fiberglass tube and causing the indicating liquid to rise within it. The fiberglass tube has graduations indicating the pressure value based on the rising height of the indicating liquid. An adhesive layer is provided on the back of the pressure-sensing jacket, which is then adhered to the surface of the anchorage component or the inner wall of a drilled hole in the anchorage component via the adhesive layer. This device converts the circumferential gripping force into the form of the vertical rise height of the indicating liquid within the fiberglass tube, displaying the circumferential gripping force inside the anchor body with a visual scale. This refines empirical values, providing strong data support for the design optimization of anchorage structures after long-term data accumulation.

The present application relates to the technical fields of valve actuator, and disclose a deep sea valve actuator with anti-stuck and anti-twisted valve rod, comprising a main body, the outer wall of the main body is fixedly connected with a spring chamber outer wall, the side of the main body away from the spring chamber outer wall is fixedly connected with a hydraulic cylinder, the inner wall of the main body is rotatably connected with a limiting device, the present application utilizes the movement of the piston, the drain port on the piston enters the overflow groove, the liquid also enters the overflow groove, the liquid flows out through the flow port communicated with the overflow groove, so that the liquid pressure in the working cavity of the hydraulic cylinder is rapidly reduced, effectively prevent the spring chamber from encountering external impact or seal failure, the gas in the spring chamber is rapidly discharged, the internal pressure of the spring chamber is rapidly reduced, the higher hydraulic pressure of the working cavity of the hydraulic cylinder can drive the connecting rod between the spring chamber and the hydraulic cylinder to displace instantaneously, thereby causing the valve to suddenly open or close, causing the pipeline damage problem.