9results about How to "Avoid high pressure" patented technology

A refrigeration apparatus and a method for bleeding thereof are provided. The refrigeration apparatus comprises a compressor comprising a compressor inlet and a compressor outlet; a condenser downstream of the compressor outlet; a first valve downstream of the condenser; and at least one flow path downstream of the first valve, each of the at least one flow path comprising a flow regulating valve to control the flow of refrigerant into the at least one flow path; wherein the first valve and the flow regulating valve are normally closed valves, and wherein the refrigeration system further comprises a bleed flow path connected between the first valve and the flow regulating valve, thereby allowing fluid to escape between the first valve and the flow regulating valve when the first valve and the flow regulating valve are closed. Embodiments according to the present invention effectively bleed fluid in a closed circuit, preventing the creation of high pressure.

The utility model relates to a kind of double-layer heating's ironing bottom plate, including bottom plate and the baffle being located on bottom plate, bottom plate is equipped with steam generation chamber, bottom plate and baffle are equipped with cabin wall and form the steam generation chamber, the steam generation chamber is separated into upper layer cabin and lower layer cabin by baffle, the upper layer cabin includes upper layer inner labyrinth in middle part and upper layer outer labyrinth in periphery;The lower layer cabin includes lower layer inner labyrinth in middle part and lower layer outer labyrinth;The terminal point of lower layer inner labyrinth is connected with exhaust chamber, steam injection hole is arranged in the position of bottom plate of the bottom surface of exhaust chamber;Baffle also includes electric heating unit for supplying heat to steam generation chamber.This embodiment has the beneficial effect that double-layer vaporization design enables steam generation chamber to produce steam more efficiently, reducing the time from normal temperature to produce high-temperature steam, thereby shortening the preheating time of electric iron, and users can start ironing work faster.

This invention discloses a dynamic constant pressure control device and method for hydrogen gas in a gas chromatograph, belonging to the field of gas analysis instrument control technology. It includes a chromatograph body, a ten-way valve, a multi-stage electromagnetic gas path control module, a pressure regulating chamber, a pressure regulating module group, and a pressure regulating control module. The pressure regulating chamber is connected to the hydrogen inlet through a first pressure regulating module, and is connected to the gas path pipelines of the multi-stage electromagnetic gas path control module through a second and third pressure regulating module, respectively. The pressure regulating control module controls the opening and closing of each pressure regulating module according to pressure changes at various points, achieving dynamic pressure balance. This invention buffers high pressure and supplements low pressure through the pressure regulating chamber, eliminating pressure surges in the closed pipeline when the ten-way valve switches, thus maintaining a stable hydrogen supply. This method achieves closed-loop control through initialization, pressure monitoring, predictive adjustment, and flow compensation steps. This invention solves the measurement deviation problem caused by hydrogen pressure fluctuations, improving the analytical accuracy and baseline stability of the chromatograph.

The present application discloses a circuit board damping mechanism and a vehicle-mounted apparatus using same. The mechanism is used for fixing a circuit board having through hole(s) to a base plate, and the damping mechanism includes: an assembly plate fixedly arranged on the base plate; each fixing bolt including a nut and a stud, wherein the stud passes through the through hole(s) and cooperate with the nut to fix the circuit board to the assembly plate; and a damping gasket arranged between the circuit board and the nut of the fixing bolt. In the present application, a bearing ring portion of a damping rubber ring bears most weight of the circuit board; and when the apparatus shakes longitudinally, the bearing ring portion and the upper damping gasket form a vertical buffer structure; moreover, the elasticity of the rubber ring itself is utilized to tightly press against the circuit board under the action of the fixing bolt(s), thereby buffering a longitudinal impact on the circuit board while preventing the circuit board from shaking longitudinally.

The utility model discloses an adjustable emergency pressure relief manhole which comprises a main body mechanism and an adjusting mechanism. The main body mechanism comprises a pipe body, an exhaust pipe installed on one side of the pipe body and communicated with an inner cavity of the pipe body, a baffle fixed to the inner wall of the pipe body, a round pipe fixed to the inner top wall of the pipe body, and an annular plate fixedly connected to the outer side of the round pipe in a sleeving mode and fixed to the inner wall of the pipe body. One end of the sealing piece is embedded in an inner cavity of the round pipe, the other end of the sealing piece is attached to the baffle, one end of the movable rod is embedded in the inner cavity of the round pipe, the other end of the movable rod extends out of the pipe body, the pipe body is used for installing other assemblies, and the bottom end of the pipe body is fixed to the tank body through bolts and communicated with the inner cavity of the tank body, so that air in the inner cavity of the tank body is conveniently exhausted outwards; an air hole is formed in the middle of the baffle, air can pass through the air hole conveniently, the top end of the round pipe is fixed to the inner top wall of the pipe body, and the adjustable emergency pressure relief manhole has the advantages of being adjustable in gas discharge pressure and high in practicability.

The invention discloses a stainless steel on-line solid solution acid-free descaling method capable of reducing work hardening, a solid solution process is to carry out on-line solid solution by using waste heat on the surface of a steel coil, an acid-free descaling process is carried out after the solid solution process, and the specific process comprises the following steps: (1) carrying out S roller treatment and scale breaking treatment on a stainless steel strip after the solid solution process, applying tension to two sides of the steel belt through S rollers at two ends; water spraying treatment is performed during scale breaking; (2) the stainless steel strip subjected to scale breaking treatment is subjected to surface scale removal through EPS treatment; (3) the stainless steel strip subjected to EPS treatment is brushed through a roller brush; (4) carrying out rinsing treatment on the stainless steel strip subjected to scrubbing treatment; and (5) the rinsed stainless steel strip is dried and then enters a coiling machine to be coiled into a finished steel coil.

The application relates to a motor double-layer cooling water channel shell based on additive manufacturing and an immersed cooling system, and belongs to the technical field of motor structures and thermal management. The shell comprises, from outside to inside, an inlet and outlet water jacket, a shunt outer water jacket and a shunt inner water jacket which are coaxially arranged in sequence; the inlet and outlet water jacket comprises two annular cavities as liquid inlet channels and liquid outlet channels; a shunt plate is coaxially arranged at the middle part of the shunt outer water jacket, and the shunt plate divides the inner cavity of the shunt outer water jacket into a shunt liquid inlet channel and a shunt liquid outlet channel; the shunt liquid inlet channel is uniformly provided with a layer of drainage holes which are in communication with the liquid inlet channels in the circumferential direction; the shunt liquid outlet channel is provided with another layer of drainage holes which are in communication with the liquid outlet channels in the circumferential direction; the shunt inner water jacket is provided with a plurality of distribution holes in the circumferential direction, and the circumferentially adjacent distribution holes are respectively in communication with the shunt liquid inlet channel and the shunt liquid outlet channel. The application realizes a spatial cross-flow channel network of "axial double-layer + radial layered", realizes precise cooling, and greatly improves the utilization rate of the cooling medium.

The utility model discloses a liquid cooling host computer and magnetic stimulation therapeutic instrument of magnetic stimulation therapeutic instrument, and liquid cooling host computer includes: host computer casing, water tank sets up in the inside of host computer casing, liquid sight glass is connected on host computer casing, and liquid sight glass is equipped with vent and air release, and vent is located the top of liquid sight glass and communicates with outside atmosphere, and the first communication pipeline is communicated between air release and water tank, adds and drains the pipeline, and the pipe orifice of one end communicates with water tank, and the other end adds and drains the pipe orifice and is located the outside of host computer casing, and adds and drains the pipeline and can supply the water of outside to enter water tank. Through additional setting and water tank communication adds and drains the pipeline, through adding and draining the pipeline to add water to water tank, and the air release of upper portion of liquid sight glass is not blocked in the process of adding water, and the water adding speed of water tank is faster, and on the basis that can utilize liquid sight glass to observe whether water level height in water tank adds to the set height, improves the water adding speed of water tank.

The utility model discloses a kind of flange temporary connecting devices, belong to pipeline maintenance field.Its technical scheme is, a kind of flange temporary connecting device, including flexible connecting piece, the first end of flexible connecting piece is equipped with tightening mechanism, and the second end of flexible connecting piece is detachably installed on the tightening mechanism;Multiple clamping plates are installed on the flexible connecting piece, clamping plate can be moved along the length direction of the flexible connecting piece, and the side edge of clamping plate is equipped with wedge slot, when the both ends of the flexible connecting piece are connected, the wedge slot is all towards the ring inside the annular ring formed by the flexible connecting piece.This scheme, multiple clamping plates are arranged around flange plate, two flange plates are clamped into wedge slot, with the gradually tightening contraction diameter of the annular ring formed by flexible connecting piece, wedge slot makes two flange plates gradually press tightly each other, realize the temporary fixing of flange plate, without repeatedly installing bolt in this process, greatly simplify the dismounting process of blind plate when pipeline maintenance, improve maintenance efficiency.