149results about How to "Stable water level" patented technology

The invention discloses an automatic method for water level of reservoir, which is indicated measuring the current water level of reservoir with water level pressure transmitter, calculating the deviation factor triangle H of water level measuring value with the specified value, synchronously calculating the rising speed of water level S and taking into the PID algorithm, obtaining the variation jaw opening triangle H of valve, and obtaining the target jaw opening L by adding the original jaw opening L0. The invention implements the presetting of PID parameter, calculating and the process for mathematical model with PLC, and synchronously controls the jaw opening of valve with the output of PLC. The positive effect of this invention is indicated as convenient measuring, excellent control quality, and quickly and automatically controlling the water level in a specified scope in the condition of fewer times of valve agency.

The invention discloses a steam oven which comprises a shell, a door module and an inner container, wherein the inner container is arranged in the shell; a water supply module is arranged on the inner container or the shell, and an assembling gap between the shell and the inner container is internally provided with a heat insulation component; and a steam generating and circulating device is arranged between the inner container and the water supply module, and connected with a secondary heating module. The steam oven disclosed by the invention has the advantages that through adding the steam generating and circulating device and the secondary heating module and combining with a single chip microcomputer for carrying out program control so as to cook various delicious foods, the fast food cooking can be realized, and the cooking time can be reduced; meanwhile, the water level in a steam generator keeps stable by using the liquid seal principle of the steam generating and circulating device, so that the occurrence of interstitial water supply and discontinuous steam generation is avoided, thereby improving the stability of products; and the steam oven can provide various cooking modes such as stewing, baking, high temperature roasting, and the like for the foods according to different foods or tastes, thereby removing excess fat in the foods and producing foods which accord with health requirements.

The invention discloses a self-bucket-tipping type irrigation water amount measuring device. The device comprises a water passing tank, a tipping bucket, a water inlet gate and a measuring system usedfor measuring the irrigation frequency of the tipping bucket; the tipping bucket is rotatably connected with the water passing tank, the water inlet side of the water passing tank is provided with afirst opening matched with the water inlet gate, the water outlet side of the water passing tank is provided with a second opening matched with the tipping bucket, the front end of the tipping bucketextends out of the second opening, and the water inlet gate is slidingly connected with the first opening; in the water inlet state, the water inlet gate is in a low position so that water in an irrigation channel can enter the tipping bucket, the tipping bucket is transversely distributed in the water passing tank, the center of gravity of the tipping bucket is gradually transferred towards the front end of the tipping bucket along with the increase of the water inlet amount, when the water level in the tipping bucket reaches a calibration value, the tipping bucket tips over clockwise under the action of the gravity of the tipping bucket, the water inlet gate is synchronously driven to ascend to separate the irrigation channel from the tipping bucket, and the water in the tipping bucket flows into farmland. According to the self-bucket-tipping type irrigation water amount measuring device, intermittent and equivalent water passing is achieved through a balanced bucket tipping mechanism, and the irrigation water amount in the farmland is accurately measured.

The invention discloses a full-load denitrification system for boiler deep peak load regulation and an operation method thereof. The system has a structure that a main flue is sequentially provided with a tail flue shaft steering chamber, a heater and an economizer along the flow direction of flue gas; the inlet of a bypass flue is communicated with the tail flue shaft steering chamber, and the outlet of the bypass flue is set on the flue at the entrance of an SCR reactor; the economizer is connected with a water supply pipe; a No.0 high pressure heater, a No.1 high pressure heater, a No.2 high pressure heater, a No.3 high pressure heater, a water supply pump and a deaerator are provided in sequence on the water supply pipe along the opposite direction of water supply; the No.0 high pressure heater is connected with a No.0 high pressure pump-out pipe, and the No.0 high pressure pump-out pipe is provided with a No.0 high pressure pump-out pipe regulating valve. The system provided by the invention can realize the full-load denitrification of a unit and the regulation of the operating flue gas temperature by controlling the flue gas flow rate of the flue gas bypass and coupling and putting the No.0 high pressure heater into operation.

The invention discloses a concealed radial gate and belongs to the technical field of irradiation. The concealed radial gate comprises an arc-shaped flashboard, a drive assembly and a rotation assembly. The arc-shaped flashboard comprises an arc-shaped surface, a plane and two end faces at the two ends of the arc-shaped surface, wherein the arc-shaped surface, the plane and the end faces are matched for forming a sealed cavity inside the arc-shaped flashboard. A flashboard groove is formed in the bottom of a ditch. The rotation assembly is arranged inside the sealed cavity. In the non-work state, the arc-shaped surface of the arc-shaped flashboard is located in the flashboard groove, and the plane is located on the same horizontal surface as the bottom of the ditch; in the work state, under the effect of the drive assembly, the arc-shaped flashboard can rotate within the range of 0-90 degrees in the flashboard groove through the rotation assembly, the arc-shaped surface and the plane of the arc-shaped flashboard are partially located in the flashboard groove, and the part, located outside the flashboard groove, of the arc-shaped surface is used for retaining water. According to the concealed radial gate, the height of a gate weir crest is adjustable, and the energy is saved.

The invention relates to steam generating devices, in particular to a safe microwave steam generating device capable of preventing microwave leakage. The microwave steam generating device comprises a cavity body, a magnetron and a microwave controller, wherein the cavity body is provided with a water filling port and a steam outlet; the magnetron is connected with the cavity body; the microwave controller is used for controlling the magnetron. An upper microwave separation net located at the steam outlet and a lower microwave separation net located at the water filling port are further arranged inside the cavity body. By the adoption of the technique, microwave leakage can be prevented, human body safety is effectively guaranteed, and damage caused by microwave leakage is avoided.

The invention discloses a method for raising first instar crab fingerlings, which is characterized by including a primary stage and a secondary stage. The method comprises the following steps: preparing in an early stage, raising crab larvae, transferring crab larvae out of culture boxes, raising crab larvae in open facilities, feeding baits, performing water quality management, and treating crab diseases. The method of the invention is advantageous in that the conditions are simple and feasible, superiority of the method is obvious, the technical scheme is reasonable, yield of crab fingerlings by culturing crab larvae is improved, and the method lays foundation for river carb industry structural regulation.

The invention discloses a composite constructed wetland system for sewage (waste water) treatment and ecological restoration. The composite constructed wetland system comprises four parts including a pressure regulating inspection well, a high-load hydrolysis tank, a natural reaeration / sedimentation integrated device and a constructed wetland, and the constructed wetland further comprises a constructed wetland body, an anti-blocking inlet water distributor, a strengthened dephosphorization denitrification groove, an outlet water collector and the like. The pressure regulating inspection well is located at the most front end of the system, sewage sequentially passes through the pressure regulating inspection well, the high-load hydrolysis tank and the natural reaeration / sedimentation integrated device to enter the constructed wetland, inlet water is distributed through the anti-blocking inlet water distributor, and the water is collected and discharged through the outlet water collector after being subjected to treatment of the constructed wetland body and the strengthened dephosphorization denitrification groove. The composite constructed wetland system is mainly used for urban sewage treatment, deep purification of initial stage rainwater and industrial tail water and the ecological restoration of polluted ground water bodies such as rivers and lakes.

The embodiment of the invention discloses a boiler wet operation water supply control method and device and a computer storage system. The method comprises the steps that the current water level value of a water storage tank of a steam-water separator is obtained; the opening degree of a recirculation pump flow adjusting valve is adjusted according to the current water level value and the water level set value of the water storage tank so as to control the water level of the water storage tank; the current flow value of the inlet end of an economizer is obtained; the opening degree of a starting adjusting valve is adjusted according to the current flow value, the flow set value of the inlet end of the economizer and the current recirculation flow value of the recirculation pump flow adjusting valve so as to control the water supply amount of a boiler; and the flow value of the inlet end of the economizer is adjusted according to the current recirculation flow value of the recirculation pump flow adjusting valve and the water supply amount of the boiler so as to control the water level of the water storage tank. By means of the embodiment, the water level of the water storage tank can be adjusted more quickly and sensitively, and the water level of the water storage tank is kept stable.

The invention discloses a method for constructing a pond suitable for frogs to inhabit in a green land. The method comprises the steps that a pond body is excavated in the green land, a waterproof blanket and a clay layer are laid in the pond body to serve as a waterproof layer, and a planting soil layer is laid on the clay layer; various submerged plants are planted on the bottom face of the pondbody, local emergent aquatic plants are planted in a land and water transition zone, and therefore a small ecosphere suitable for survival of small aquatic organisms such as the frogs is constructedin the pond body, the green land such as the urban near-water green land and the urban open green land meets the growth and reproduction requirements of amphibians such as the frogs and other small aquatic animals, a small ecological system organically combining animals and plants is constructed in the green land, and the ornamental value of landscape water is reserved; and due to the fact that the small ecological system is constructed in the water, the biodiversity of the water in the green land can be greatly improved, a certain adjusting effect is achieved on the micro climate zone aroundthe green land, and the ecological effect of the water such as the pond in the green land is remarkably improved.