958 results about "Leaking water" patented technology

The invention discloses a tunnel structure leaked water precise identifying device and method based on infrared thermal imaging, and mainly solves the problem of imprecise area calculation caused by inaccurate leaked water profile detected by traditional single visible light images in traditional tunnel structure leaked water detection. A data acquiring device comprises an infrared thermal imager,an industrial camera, a light feeding device, a synchronous control card, a laser distance measurer, a distance measuring wheel device, an industrial personal computer and a power supply system. Thetunnel structure leaked water identifying method uses the infrared thermal imager and the industrial camera for respectively acquiring infrared thermal images and visible light images of tunnel structures, firstly extracts out leaked water center areas according to the principle of lower temperatures of leaked water areas in the infrared thermal images, widens the range to extract the leaked waterareas from the same areas of the visible light areas, uses temperature information in the infrared thermal images for correcting the area profiles extracted from the visible light images, and finallycalculates the areas to solve the problem of inaccurate identification of leaked water areas in the prior art.

The invention discloses a composite wallboard and a combined wallboard. The composite wallboard comprises keels, panels and fixing shafts, wherein locking pieces are arranged at two ends of each fixing shaft; first positioning grooves which are matched with the panels are formed in the keels; more than two first positioning grooves of which the openings are in the same direction are formed in each keel; the panels are arranged in the first positioning grooves opposite to two adjacent keels; a double-layer panel is arranged between every two adjacent keels; the fixing shafts penetrate through corresponding first through holes in each keel and then are fixed together with the locking pieces; the locking pieces block the keels along the axial directions of the fixing shafts; the keels block the panels along the axial directions of the fixing shafts; and the keels, the panels and the fixing shafts are assembled together. The composite wallboard has the advantages of simple structure, is easy and convenient to mount, and can be used as an outer wall and an inner wall. When used as an outer wall body, the composite wallboard cannot crack and leak water, so that the outer wall is not required to be subjected to secondary heat preservation treatment and water repellent treatment and is not required to be subjected to a surface treatment process of painting or bonding wall tiles; and the panels are not required to be fixed together with the keels through fastening pieces or glue and the like.

The invention discloses a water cooling balance which comprises a rod-type balance and a water-cooled jacket. Two water flow pipelines are arranged in the rod-type balance. The two ends of each water flow pipeline are arranged on the two end faces of the rod-type balance respectively. A switching joint is arranged between the water-cooled jacket and the rod-type balance and fixed to one end face of the rod-type balance through a screw. A water inlet switching pipeline and a water outlet switching pipeline are arranged on the switching joint. One end of the water inlet switching pipeline and one end of the water outlet switching pipeline correspond to openings of the two water flow pipelines on the end faces of the rod-type balance in position and the other end of the water inlet switching pipeline and the other end of the water outlet switching pipeline correspond to a water inlet and a water outlet of the water-cooled jacket in position. The defects that a corrugated pipe type water cooling balance is large in drag measurement error and inconvenient to install and use and a corrugated pipe is prone to being damaged and leaking water are overcome. In addition, due to the fact that corrugated pipe related devices are omitted, the length of the balance is reduced, the diameter of the balance is increased, the rigidity and the cooling effect of the balance are greatly improved, the temperature effect is reduced, and measurement uncertainty is obviously reduced.

The invention relates to the technical field of fire fighting equipment and provides a monitoring system for an intelligent fire hydrant and the intelligent fire hydrant. The monitoring system for the intelligent fire hydrant comprises a pressure transmitter, a miniature magnetic switch sensor and an intelligent module. The pressure transmitter is used for monitoring the water pressure value of the fire hydrant, the miniature magnetic switch sensor is used for monitoring the opening time of a valve of the fire hydrant, and the intelligent module is used for monitoring the state of the fire hydrant. The water outflow of the fire hydrant is estimated by a central control unit in the intelligent module according to a monitored water pressure value signal of the fire hydrant and a opening time signal of the valve of the fire hydrant so that a monitoring department can master the information of the water pressure of the fire hydrant in real time and whether the valve of the fire hydrant is opened or not, whether the fire hydrant leaks water or not or water is illegally obtained or not can be effectively monitored, and the water outflow of the fire hydrant can be estimated.

The invention discloses an interchangeable water tank assembly and a domestic back-suction type dust collector. The interchangeable water tank assembly comprises a water tank body in which a water trough is arranged, a cover body which covers the water tank body to form a closed space in an encircling manner, an electromagnetic valve assembly mounted in the cover body, and flow guide cloth which is located in the water tank body and is close to the water trough, wherein a water flow guide opening is formed in the side wall of the water trough, and corresponds to the flow guide cloth; the electromagnetic valve assembly comprises an electromagnetic valve and a guide pipe with one end connected with the electromagnetic valve; an air injection opening communicated with the other end opening of the guide pipe is further formed in the side wall of the water trough. According to the technical scheme, the interchangeable water tank assembly can prevent a water tank from leaking water or seeping water; and furthermore, the water drain uniformity can be increased, and the cleanness of a floor cleaned by the dust collector is improved.

The invention provides an automatic recognition method of a tunnel leaking water defect. The automatic recognition method includes the following steps that (1), point cloud information of a tunnel isacquired through a three-dimensional laser scanner, wherein the point cloud information comprises point cloud position information (x, y and z) and gray values (i); (2), each fracture surface on the axis of the tunnel is subjected to segmented arc fitting, and point cloud beyond the range of fitting residuals, namely point cloud of ancillary facilities in the tunnel is extracted, the point cloud is recorded in a set A, and a complete tunnel image is obtained; (3), according to the characteristics that the gray value of leaking water on the tunnel image is small, the gray value of the point cloud in the set A is set as the maximum value of all the point cloud gray values, and the purpose of removing interference of the ancillary facilities in the tunnel can be achieved; (4), interferent affecting image judgment of the tunnel leaking water defect is further removed through an edge detection algorithm; (5), leaking water defect points are automatically recognized on the tunnel image obtained after image processing.

The invention relates to a testing device and a testing method for the water tightness of a cable. The testing device is characterized in that a pressure gauge, a pressure release valve, a water source interface and a pressurizing interface are respectively arranged on a pipe body of a pressure chamber, the two ends of the pipe body of the pressure chamber are respectively provided with a flange in a fixed mode, a fastening nut with a line passing hole or a fastening nut without the line passing hole is screwed at each of the two ends of the pressure chamber through O-ring seals, a measuring cylinder is arranged below the fastening nut with the line passing hole, and a pressuring device is connected with the pressurizing interface. The testing method comprises the following steps of: inserting the manufactured cable into the pressure chamber, sealing the two ends of the pressure chamber by the fastening nuts through the O-ring seals, and placing two ends or one end of the cable extending out of the fastening nuts with the line passing hole in the measuring cylinder; filling the pressure chamber with water; pressuring the pressure chamber; and after ending the test, checking whether water leaks at the two ends of the cable, or measuring the volume of leaking water in the measuring cylinder. The testing device and the testing method can be used for really simulating the high-pressure state under water and effectively detecting the water tightness of the cable and have the characteristics of good repeatability, small errors and the like.

The invention discloses an anti-leakage pulsator washing machine. The anti-leakage pulsator washing machine comprises a clutch, a first waterproof device and a second waterproof device. The clutch comprises a washing shaft and a dehydrating shaft, wherein the dehydrating shaft coaxially rotates around the washing shaft. The first waterproof device comprises a first water seal, an inner barrel flange and an outer barrel, wherein a first waterproof space is formed among the first water seal, the inner barrel flange, the dehydrating shaft and the outer barrel. The second waterproof device comprises an impeller and a second water seal, wherein a second waterproof space is formed among the impeller, the second water seal, the washing shaft and the dehydrating shaft. According to the anti-leakage pulsator washing machine, water which is poured in the process of washing is used for compressing air sealed in the first waterproof space and the second waterproof space, the compressed air effectively blocks the water and prevents a portion prone to leakage from contacting with the water in the washing machine, and therefore a condition that the clutch portion leaks water so as to enable the clutch to get rusty and corroded and influence the performance of the whole machine is effectively avoided. The anti-leakage pulsator washing machine is low in cost and good in anti-leakage effect.

The invention relates to a method for building a tunnel water taking opening or a water outlet in the bottom of a reservoir, in particular to an underwater rock plug blasting construction method. The method is achieved through the following technical schemes that the underwater rock plug blasting construction method includes the steps of 1, surveying and setting up, 2, selecting a rock plug opening and the position of a slag gathering pit, 3, processing a rock plug opening covering layer, 4, detecting the thickness of a rock plug body, 5, conducting geological sketch on the rock plug body cross section, rock plug body surrounding rock leakage analysis and rock plug body leaked water processing, 6, calculating the rock plug body safety thickness, 7, designing and arranging a rock plug body blasting scheme and 8, conducting blasting. By means of the method, it is avoided that a cofferdam is built in deep water, and the method is economical and safe.

The invention relates to a method for producing a machining type impregnated graphite tube, which comprises the steps of: processing blocky graphite raw materials in different shapes into a pipe shape; drying; impregnating; curing at high temperature; processing a pipe material; connecting, and the like. Processes of mixing, extruding, and the like are not used, pipe materials meeting the requirements for manufacturing various graphite tube exchangers are produced; meanwhile, the manufactured graphite tube has high hardness and large strength, and threads can be processed at the end part of the manufactured graphite tube; the graphite tubes are connected together by combining a connecting mode of internal and external threads with a mode of bonding agent, which avoids the problem that thegraphite tube leaks water after used for a period of time.

Provided is an improved post-pouring strip advanced water-stopping construction method. A structure is thickened on a post-pouring strip portion in advance to form a whole, a post-pouring strip is stripped out, a water-swelling water-stopping strip is arranged in the middle of the thickened portion to meet the requirements of different settlement and telescopic deformation, and the water-stopping effect can be achieved before pouring of the post-pouring strip of a basement. The construction method includes the steps of digging of a post-pouring strip basic earthwork, bottom plate and post-pouring strip cushion layer construction, leveling blanket construction, waterproof layer construction, protective layer construction, installation of the post-pouring strip and an externally attached water-stopping strip, reinforced steel rib installation, formwork installation, installation of a post-pouring strip side face quick and simple net, basement bottom plate concrete pouring and post-pouring strip concrete construction. The basement does not leak water after construction by means of three local waterproof measures of the externally attached water-stopping strip, the water-swelling water-stopping strip and the post-pouring strip, water pumping is barely needed in the basement, construction is convenient, and operation is easy.

The invention discloses a remote monitor and control system for a drinking device. The remote monitor and control system comprises a sensing system, a PLC industrial controller, a remote alarming device and a mobile phone terminal. The sensing system is arranged on the drinking device; the PLC industrial controller is connected with the remote alarming device; and the mobile phone terminal is connected with the remote alarming device through a communication network. The sensing system comprises a leakage sensing module, a heating inner-container failure and circuit fault sensing module, a drinking device water shortage and water supply abnormity sensing module and a filter core abnormity sensing module. The advantages of the remote monitor and control system are that: with the remote monitor and control system, working states of the drinking device can be remotely monitored; a standby filter system can be remotely started; water quality can be remotely monitored; the filter core can be remotely replaced and the system performs a remote safety protection function. Therefore, after the remote monitor and control system for the drinking device is installed, allocation of full-time management personnel locally is not needed; management cost is saved and management effectiveness is greatly improved; drinking safety accident, which is for the reason that the management personnel fail to clear the trouble in time, of the drinking device is prevented.

The invention provides a subway tunnel structure safety assessment method, which is implemented according to the following steps: 1) considering the operability of the various index detections and the comprehensive thoroughness of describing the tunnel structure safety; based on the tunnel structure safety stress and deformation characteristics, determining the tunnel structure safety assessment index system; selecting six assessment indexes referred to as leaking water, longitudinal settlement, transverse convergence, slab staggering, cracks, and duct piece damage; 2) according to the currently available safety level classifying method, relevant codes and the tunnel stress and deformation control standards, determining the level classifying standards for the assessment indexes; 3) based on the arithmetic product scaling method, determining the index weight vectors; 4) collecting the on-site detection data of the six indexes; according to the index detection values, calculating the degree-of-membership vectors for the indexes and combining them into an degree-of-membership matrix; 5) according to the correlation of the indexes and the safety level of the indexes, performing the weight changing process; and 6) calculating the fuzzy comprehensive assessment vectors by the fuzzy comprehensive assessment principle, and determining the assessment result according to the maximum degree-of-membership principle.

The embodiment of the invention provides a pipeline leakage monitoring method and a control unit, device and system. When it is determined that water use equipment communicated with a pipeline segment to be detected is in a closed state, the monitoring mode is exerted, and it is avoided that normal water use of a user is affected. Under the monitoring mode, the pipeline segment to be detected is closed at the interval of preset time during the monitoring period, and when the pipeline segment to be detected is closed each time, a first pressure valve of the inner wall of the pipeline is obtained; if the change rate of the first pressure valve of the inner wall of the pipeline exceeds a preset threshold value, water leakage of the pipeline segment to be detected is determined. Whether the pipeline segment to be detected leaks water or not can be accurately judged through the water pressure valve of the inner wall of a sampling pipeline. According to pressure detection, a pressure sensor low in power consumption can work by adopting a low-power source without increasing pressure loss in a water route, and compared with an existing impeller flowmeter, the pressure sensor has a larger detection range.

The invention discloses an intelligent cleaning robot. The robot comprises a casing, a water tank, a mop, a controller and a power supply, wherein an accommodating cavity used for accommodating the water tank is formed in the casing; an inner water outlet is formed in the bottom of the water tank and connected with a water valve for controlling the inner water outlet to be opened or closed, a conducting strip group is arranged on the outer wall of the water tank, and a spring needle group matched with the conducting strip group for detection is arranged in the accommodating cavity. The intelligent cleaning robot has the functions of water tank detection, water yield control and water level detection; besides, the water tank is provided with a hidden air inlet cavity, so that the water tank does not leak water after being inverted at will.

The invention discloses a device and a method for monitoring the leakage of a hydraulic structure body. The device comprises a plurality of leakage monitoring modules distributed in the hydraulic structure body, wherein each leakage monitoring module comprises first leakage monitoring units distributed up and down, second leakage monitoring units distributed left and right, and a telescopic support connected with the first leakage monitoring units and the second leakage monitoring units at the same time; leakage measuring optical fibers are distributed in the first leakage monitoring units and the second leakage monitoring units; the leakage condition of the hydraulic structure body is monitored through the leakage measuring optical fibers. The device disclosed by the invention has the characteristics of no heating, distribution and synchronism, and has prominent advantages on the aspects of reducing the monitoring cost, promoting the monitoring precision and the engineering practicability and the like; according to the monitoring method disclosed by the invention, the leakage monitoring modules are flexibly arranged in the hydraulic structure body, and the position and direction of leaked water are obtained through the calibration of the optical fibers and the comparison of the leakage measuring optical fibers, so that the method is simple in operation and accurate in result.

The invention discloses a dual sealing structure for an ultra high temperature double-layer water cooling quartz tube vacuum chamber. The dual sealing structure comprises a double-layer quartz tube nested structure, and stainless steel sealing assemblies respectively nested at two ends of the double-layer quartz tube nested structure; the double-layer quartz tube nested structure comprises an outer layer quartz tube and an internal layer quartz tube embedded in the outer layer quartz tube, and a ring-shaped cavity is formed between the outer layer quartz tube and the internal layer quartz tube; each stainless steel sealing assembly comprises a first stainless steel flange plate, a first stainless steel fastening circular ring, a second stainless steel flange plate and a second stainless steel fastening circular ring which are matched mutually, wherein a stainless steel cover is detachably mounted at the outer side of the second stainless steel flange plate; a water cooling port communicated with the ring-shaped cavity is formed in each stainless steel sealing assembly; a leaked water vapor vacuum isolation region is formed between the inner wall of each second stainless steel flange plate and the outer wall of the internal layer quartz tube, and the second stainless steel flange plate is provided with an exhaust tube communicated with the leaked water vapor vacuum isolation region. The dual sealing structure can achieve ultra high temperature, has excellent sealing property, and is safe and reliable.

The invention provides a leakage-proof construction process method of a toilet and a kitchen. The quality problem that the weak positions such as floor drains, wall footings, pipe roots and wall surface holes leak water is solved, the waterproof property of the toilet and the kitchen is improved, peeling and cement blooming of wall surface emulsion paint and wallpaper are avoided, and the servicelife of decorative materials and decoration projects is prolonged; through slope finding and floor drain reforming, the problem that water is accumulated on ground mortar layers of the toilet and thekitchen is effectively avoided, and thus the foreign flavor is avoided; and a construction method is simple, the construction cost is low, and the healthy and sanitary living environment is created for people.

The invention discloses a water tank type cleaning machine convenient to observe. The water tank type cleaning machine convenient to observe comprises a water tank body with a cleaning space and a covering plate arranged on the water tank body, and is characterized in that the covering plate comprises an upper cover and a lower cover which are made of glass, an interlayer is formed between the upper cover and the lower cover, a metal framework wraps the periphery of the upper cover and the lower cover, and a transparent observation window is formed in the center of the covering plate. Through the double-layer glass structure and a combined structure with the metal framework and the glass, the water tank type cleaning machine convenient to observe saves energy, protects the environment, reinforces the strength of the covering plate and makes it possible that a sealing strip can be arranged. The sealing strip is arranged in the position where the covering plate is matched with the water tank body, the water inside the water tank body is sealed inside and is prevented from splashing outwards and causing personal injuries or other accidents in the cleaning process, and due to the sink connecting method, even though the sealing strip ages and is insufficient in sealing, the leaked water can be limited at a step part and can not be splashed out.

The invention belongs to a repairing method of iron-making blast furnace equipment, which relates to a cooling wall leakage repairing method. The method mainly solves the technical problems that grouting can stop leakage but can not repair big gaps and the conduction cooling capacity is reduced after grouting. The repairing method of cooling wall leakage is characterized in that the method comprises the following steps of: a. shell opening: including opening holes with apertures of 150 to 250mm on the furnace shell around water pipes on a cooling wall; b. root grooving: including opening grooves at the root part of the cooling wall around the leaking water pipes and sheaths for eliminating cracks as well as molding sand, slag inclusion and loosening on the surface of the cooling wall; c. surface pretreatment: comprising eliminating the grooving parts and residual oxidative metal and oxide films on the surface around the grooves for exposing the metallic luster; d. leakage repairing: the leakage repairing method includes one process of a welding process and a high-molecular polymeric metal bonding process or a composite process combining the two processes; and e. hydrostatic test: after the repairing work, water is supplied for testing the pressure for 30min so as to check the leakage condition. The method is mainly used for repairing cooling wall leakage of blast furnaces.

The invention discloses a pre-embedded box and an installation method, comprising a shell, a chassis and a water connection; the chassis is installed in the casing, and forms a water inlet and outlet, and the water connection is connected through the outside of the casing The water inlet and outlet; the pre-embedded box is also provided with a seal test assembly, which is installed in the housing; the seal test assembly includes a pre-embedded box cover plate, and at least two seal test plugging units, The seal test plugging unit is movably connected to the cover plate of the pre-embedded box, and corresponds to the water inlet of the chassis respectively; the invention provides a pre-embedded box and an installation method with simple structure, reasonable design and easy realization. Test the airtightness of the water inlet and outlet to ensure that there will be no water leakage accidents after the subsequent installation is completed, and the installation and adjustment are simple and extended by folding to avoid the problem that the bathroom components cannot be connected with the embedded box pipelines, which is conducive to the realization of Quick installation, adjustment, maintenance, replacement and product upgrades make it easier to meet the needs of installation and use.

The invention relates to a reverse drainage treatment method during the construction period of a dam body of a high rock-fill dam provided with a concrete panel, which is a drainage method for treating dam body construction waste water and underground leaked water during the construction period of the high rock-fill dam provided with the concrete panel by combination of the prior drainage and toe board and wide slot drainage. The method comprises the following steps: firstly, as for the dam body construction waste water and the underground leaked water below the elevation on the top of a flow measurement weir on the rear of the dam, reinforced gabions are used for arranging a temporary collecting well and a drainage pipe inside a rock-fill before the dam for drainage, that is the reverse drainage treatment method is performed; and secondly, as for the dam body construction waste water and the underground leaked water on the elevation on the top of the flow measurement weir on the rear of the dam, drainage is still performed by adopting the prior flow measurement weir on the rear of the dam. The method breaks through the treatment range of reversely leaked water in the dam body during the construction period of the rock-fill dam covered by the DL / T5128-2001 construction specifications of the Construction Specifications for the Rock-fill Dam Provided with a Concrete Panel, solves the problem of drainage of the leaked water in the dam body in the construction process of the high rock-fill dam, and particularly guarantees the safety of construction of the concrete panel.

The invention discloses a construction method for an underground diaphragm wall. The construction method comprises the following steps of (1) constructing a guide wall, (2) manufacturing reinforcement cages, (3) manufacturing slurry, (4) grooving, (5) lifting and putting the reinforcement cages down, (6) pouring concrete underwater and (7) treating wall section joints. According to the construction method for the underground diaphragm wall, the problems that adjacent wall sections can not be aligned and leak water are solved, the effect is obvious, and the construction method can be applied and popularized in actual construction.

The invention relates to an ultrasonic wave water leakage monitoring protector and belongs to the technical field of water leakage monitors. The ultrasonic wave water leakage monitoring protector comprises a pipeline with a water inlet and a water outlet; an ultrasonic wave sensor and an electric ball valve are arranged inside the pipeline; a flow adjusting device is arranged at the side, close tothe water inlet, of the ultrasonic wave sensor; a controller for controlling the electric ball valve to be opened and closed is arranged outside the pipeline; and the ultrasonic wave sensor and the electric ball valve are electrically connected with the controller. The ultrasonic wave water leakage monitoring protector has the beneficial effects that the ultrasonic wave water leakage monitoring protector is reasonable in structural design, convenient to install and use and good in reliability, and can remind users and automatically carry out water break protection in time when monitoring thatthe pipeline leaks water.

The invention relates to a copper cooling piece making method used in metallurgical furnace and high-temperature furnace, especially a buried-tube type copper cooling piece making method, adopting graphite as casting mould, and at the same time, preprocessing the copper tube and then filling the inner cavity of the copper tube with coated sand, drying and then dropping the copper tube in the die space, then use the lie-making and erect-burning process to cast and cast, where the casting temperature is controlled at 1090-1140 deg.C. The made copper cooling piece not only has good cooling effect, smooth inner cavity and small water resistance at the time of water cooling, but also can not leak water because in no need of welding water inlet and outlet tubes and stopper, largely enhancing product quality. And at the same time, it largely reduces production cost.

The invention discloses a coil assembly of an electronic expansion valve. The coil assembly comprises a coil pack of a stator winding, and a circuit board injection-molded part for mounting a circuit board; and the coil pack and the circuit board injection-molded part are subjected to two-times injection molding to be a whole, and thus a coil injection-molded part is formed. With the adoption of the structure, the coil injection-molded part subjected to the two-times injection molding ensures the airtightness between the circuit board injection-molded part and the coil pack, in the assembling process of the coil assembly, the circuit board injection-molded part and the coil pack are not required to be welded so that the probability that a welding joint between the circuit board injection-molded part and the coil pack leaks water is zero, and the working stability of the electronic expansion valve is ensured. In addition, the invention also discloses the electronic expansion valve using the coil assembly, and an assembling method of the coil assembly. The electronic expansion valve and the assembling method have the same effects as the coil assembly.

The invention provides a leakage detecting device for a water dispenser and a leakage detecting method thereof. The device comprises a gas source, a conduit pipe, an electric control device and a connecting frame, wherein the electric control device comprises a pressure detecting device, a controller and a gas source control valve; the gas source is in gas connection with a gas source control valve in the electric control device through the conduit pipe; a gas outlet of the pressure detecting device in the electric control device is connected with one end of the connecting frame, and the other end of the connecting frame is connected with a diversion basin of the water dispenser to be subjected to leakage detection; a signal output end of the pressure detecting device is connected with a signal input end of the controller; and a signal output end of the controller is connected with the gas source control valve. The leakage detecting device can conveniently detect whether the water dispenser leaks gas or water or not, has a simple structure and low manufacture cost, and is easy for accessory maintenance. The leakage detection method comprises the following steps: introducing gas into the water dispenser, and detecting pressure of the gas; determining and displaying whether the gas is leaked or not according to the gas pressure value through the electric control device; and detecting whether the water dispenser leaks water or not according to the fact that whether the gas is leaked or not. The leakage detecting method is convenient and practical, and is easy to operate.

The invention discloses a leakage measuring instrument, which comprises a leakage collecting component, a supporting component, a collection protecting component, a drainage component and a leakage measuring component. The leakage measuring instrument is characterized by also comprising a filtering component. The supporting component is arranged at the bottom of the collection protecting component; and the leakage collecting component, the filtering component and the drainage component are arranged in the collection protecting component, wherein the drainage component and the leakage collecting component are combined together, and the leakage measuring component measures the water drained by the drainage component. The leakage measuring instrument has the advantages of small volume, low cost, convenient installation and portability; and the measuring method is simple and has high precision. The leakage measuring instrument can be directly arranged at a certain depth of any position of the farmland, and realize timely, quantitative and intuitional automatic measurement of leaked water in a deep layer.