18results about How to "Reduce pressure loss" patented technology

The present invention discloses a reaming drill bit, which includes a drill barrel, an end head, an expansion wing assembly, a piston assembly, and a detection device, wherein the end head is installed at the end of the drill barrel, the piston assembly slides relative to the drill barrel, the piston assembly is suitable for driving the expansion wing assembly to expand or retract, a first injection channel is provided in the drill barrel, and the piston assembly is provided with a first pressure relief channel and a second pressure relief channel. When the piston assembly drives the expansion wing assembly to expand into place, the first pressure relief channel is connected to the first injection channel; when the piston assembly drives the expansion wing assembly to retract into place, the second pressure relief channel is connected to the first injection channel, and the detection device is suitable for detecting the pressure or flow in the first injection channel to check whether the expansion or retraction of the expansion wing assembly is in place. The present invention realizes the drive control of the expansion wing with an economical and effective solution, improves the rigidity of the equipment, is more suitable for hard rock and soil, and can help operators master the working status of the equipment.

The invention discloses a hydraulic walking control system and method and a high-altitude operation vehicle. The system comprises a walking pump, a first flow distributing and collecting valve, a second flow distributing and collecting valve and all walking motors. A port A of the walking pump is connected with a third port of the first flow distributing and collecting valve and a third port of the second flow distributing and collecting valve, and a port B of the walking pump is connected with a port B of the left front walking motor, a port B of the left rear walking motor, a port A of the right front walking motor and a port A of the right rear walking motor. A fourth port of the first flow distributing and collecting valve is connected with a port A of a left front walking motor, and a second port of the first flow distributing and collecting valve is connected with a port A of a left rear walking motor; a fourth port of the second flow distributing and collecting valve is connected with a port B of the right front walking motor, and a second port of the second flow distributing and collecting valve is connected with a port B of the right rear walking motor. The problem that the walking effect is affected due to the fact that flow and pressure change is caused by slipping during walking is solved.

The invention provides a hydraulic valve bank with a sealing detection function, which belongs to the technical field of hydraulic valve banks and comprises a valve block, a plurality of valve bodies, a sealing box and a cooling block, according to the hydraulic system, leaked hydraulic oil is temporarily stored through the arranged sealing assembly, so that the situation that the hydraulic oil flows out from a leakage point to the outer side irregularly and unlimitedly to pollute the surrounding environment is avoided, the leaked hydraulic oil is pushed back through the compensation assembly, and part of the leaked hydraulic oil returns to the hydraulic system again; in this way, pressure loss of the hydraulic system is reduced, the alarm assembly gives an alarm when the sealing assembly and the compensation assembly reach the maximum bearing capacity, secondary leakage of the sealing assembly is avoided, the cooling assembly enables all parts of hydraulic oil to be in uniform contact, cooling uniformity is guaranteed, and the service life of the hydraulic system is prolonged. A plurality of through holes are formed in the cooling block to accelerate the cooling process, so that over-high oxidation speed of hydraulic oil caused by over-high oil temperature is avoided, and the service life of the hydraulic oil is prolonged.

The present invention belongs to the technical field of heat sink assembly, and specifically relates to a tooth pressing method and device for a plug-in type heat sink. The method is to place the heat sinks on a heat storage substrate in sequence, drive a pressing tool to move downward in the gaps between adjacent heat sinks, and press the teeth to deform them so as to be riveted and fixed with the slots. The device includes an X-axis worktable, a YZ-axis riveting mechanism located above the X-axis worktable, and a pressing tool mechanism fixed on the YZ-axis riveting mechanism. The technical solution provided by the present invention realizes the tooth pressing operation by pressing a fixed point on the teeth of the heat sink through a pressing tool, and changes the method of fixing the pressing distance of the tooth pressing stroke in the prior art to a method of controlling the pressing distance in real time through pressure, which can better adapt to the actual differences in the sizes of different heat sinks and slots, and can be applicable to the processing and production of various shapes of plug-in type heat sinks on the market.

The application relates to the technical field of agricultural greenhouse spraying equipment, and discloses agricultural greenhouse spraying equipment which comprises two guide plates, the upper end of each guide plate is provided with a sliding block, the upper end of each sliding block is fixedly provided with a vertical column, the upper end of each vertical column is threadedly connected with a support column, the top of each support column is fixedly provided with a top disc, two top discs are fixedly provided with a connecting rod between the top discs, the connecting rod is a multi-section detachable connecting rod, a plurality of groups of pull rods are fixedly arranged outside the connecting rod, the lower end of each group of pull rods is fixedly provided with a semicircular ring, a soft water pipe penetrates through the inside of each semicircular ring, the lower end of each semicircular ring is fixedly provided with a square block, the outside of the soft water pipe is provided with a spraying pipe, the lower end of the spraying pipe penetrates through the square block, and the outside of the spraying pipe is threadedly connected with a nut; the agricultural greenhouse spraying equipment has high spraying efficiency and saves cost.

The invention discloses a vehicle end data remote acquisition method and system suitable for an unmanned vehicle. The method comprises the steps of issuing a pre-configured vehicle end data uploading strategy to a vehicle end according to a vehicle end data acquisition requirement; wherein the vehicle end data uploading strategy comprises a first data uploading strategy in a non-vehicle end abnormal scene and a second data uploading strategy in a vehicle end abnormal scene; receiving first vehicle end data uploaded by the vehicle end according to the first data uploading strategy; receiving second vehicle end data actively uploaded according to a second data uploading strategy corresponding to the abnormal scene when the vehicle end is in the abnormal scene; wherein the data uploading priority of the second vehicle end data is greater than the data uploading priority of the first vehicle end data; according to the embodiment of the invention, through the above technical scheme, high efficiency of remote acquisition of the vehicle-end data can be realized, pressure and resource loss of vehicle-end data storage are effectively reduced, and loss or coverage of the vehicle-end data in an abnormal scene is avoided.

The invention discloses an integrated device, a heat management system and a control method of the heat management system, the integrated device is provided with a bypass channel, a valve cavity and a valve port, the integrated device comprises a heat exchange assembly, a connecting assembly and a valve assembly, and the heat exchange assembly is provided with a first fluid inlet, a communicating port and a first heat exchange channel; the first fluid inlet communicates with the communicating opening through the part of the first heat exchange channel, the valve assembly comprises a valve element assembly, and at least part of the valve element assembly is located in the valve cavity. Wherein the valve port communicates with the bypass channel, the communicating port communicates with the valve cavity, and the valve element assembly can move in the direction close to or away from the valve port so as to adjust the communicating state of the communicating port and the valve port; in this way, the integrated device can bypass part of the first heat exchange channel through the bypass channel, and pressure loss generated when an oil medium passes through the integrated device can be reduced conveniently.

The utility model discloses an automobile rubber bushing degumming detection device comprising a square tube support, the top end of the square tube support is provided with a base station, the central position of the top of the base station is provided with a lower fixing plate, one side of the top end of the lower fixing plate is provided with a first side supporting plate, and the other side of the top end of the lower fixing plate is provided with a second side supporting plate. A middle supporting plate is arranged at the top end of the lower fixing plate between the second side supporting plate and the first side supporting plate, an upper fixing plate is arranged at the top end of the middle supporting plate, an electric cabinet is arranged on one side of the top end of the upper fixing plate, a first air cylinder is installed on the other side of the top end of the upper fixing plate, and the bottom end of the first air cylinder penetrates through the upper fixing plate and is provided with an upper pressing head. According to the utility model, the double-cylinder design is adopted, the beat is saved by one time, the efficiency can be doubled, defects of a product body can be fully exposed, double-sided detection like a general aerostatic press is not needed, and the product body is limited and fixed by the upper tool, so that the product body is more stable and higher in safety.

The invention discloses an integrated device, a heat management system and a control method thereof.The integrated device is provided with a bypass channel, a valve cavity, a first valve port and a second valve port, the integrated device comprises a heat exchange assembly, a connecting assembly and a valve assembly, the valve assembly comprises a valve element assembly, at least part of the valve element assembly is located in the valve cavity, and a first communicating port communicates with the bypass channel; the second communication port is communicated with the first fluid inlet, the third communication port is communicated with the inlet, the third communication port can be communicated with the first communication port through the first valve port, the third communication port can be communicated with the second communication port through the second valve port, and the valve element assembly is configured to selectively enable at least one of the first valve port and the second valve port to be in an open state; in this way, the integrated device can bypass the first fluid inlet of the heat exchange assembly through the bypass channel, and pressure loss of working fluid in the integrated device can be reduced conveniently.

According to the integrated optimized flow guide check valve for the gas storage, the front end of a guide column (10) is in threaded connection with a middle hole of a boss in the middle of the rear side of a valve clack (8), the guide column (10) is sleeved with a guide sleeve (15), the front end of the guide sleeve (15) is sleeved with a spring (9), and the guide sleeve (15) is fixed to a supporting structure in the middle of a flow guide cover (101) integrally formed in an inner cavity of a valve body (1); the axial flow type structure and the flow guide cover arranged in the valve body are integrally cast and formed, the valve seat is of a Venturi type structural design, the flow resistance is small, and the flow state is good. The acting force of fluid acting on the valve clack is enhanced, the minimum opening speed is reduced, and it is guaranteed that the valve clack is rapidly opened and closed; the valve clack is flexible to open and close, stopping and reverse flowing of fluid can be achieved under the small pressure difference, and the sealing effect is good. Due to the streamline design and the effect of the buffering and damping spring, noise and vibration generated in the opening and closing process of the valve are small. No impact exists, dynamic response is fast, pressure loss is small, noise is low, and sealing performance is good.

The present invention discloses an integrated pumping main valve, which includes a valve body, on which a main oil inlet, a main oil return port, a secondary oil inlet and a secondary oil return port are provided; the valve body is provided with a first oil outlet connected to the rod chamber oil port of the first oil cylinder and a second oil outlet connected to the rodless chamber oil port of the first oil cylinder, and the valve body is provided with a third oil outlet connected to the rod chamber oil port of the second oil cylinder and a fourth oil outlet connected to the rodless chamber oil port of the second oil cylinder; it also includes a high-pressure switching valve chamber and a low-pressure switching valve chamber integrated in the valve body and a cut-off valve assembly, one end of which is connected to the rod chamber oil port of the first oil cylinder and the other end is connected to the rod chamber oil port of the second oil cylinder, and the cut-off valve assembly is used to control the connection or disconnection of the oil circuit between the rod chamber of the first oil cylinder and the rod chamber of the second oil cylinder. The integrated pumping main valve has a small size, a simple structure, and is easy to install, and has a short oil supply oil circuit, low oil flow resistance, low pressure loss, and fast switching oil supply response.

The utility model belongs to the technical field of vehicle tail gas treatment, and discloses an SCR mixer and a tail gas treatment system. The SCR mixer specifically comprises a rotational flow pipe and a mixing inner pipe, a plurality of rotational flow holes distributed at intervals in the circumferential direction are formed in the rotational flow pipe, rotational flow pieces extend out of the rotational flow pipe along the side wall faces of the rotational flow holes, and the included angle between the rotational flow holes and the plane where the rotational flow pieces are located is not smaller than 25 degrees. The mixing inner pipe is coaxial with the rotational flow pipe and arranged in the rotational flow pipe, and a plurality of strip-shaped holes are distributed in the mixing inner pipe in the circumferential direction at intervals. According to the SCR mixer, the back pressure can be effectively reduced, the mixing uniformity of urea and tail gas can be considered, and the dynamic property and economical efficiency of an engine are improved.

The present application relates to closed pump control hydraulic technology field, especially to a kind of closed pump control hydraulic circuit, adaptive flow compensation system and control method thereof.The closed pump control hydraulic circuit includes the piston assembly of two synchronously movable piston rods, which is installed in main hydraulic cylinder and adaptive flow compensator to form an integrated unit, and the main hydraulic cylinder and adaptive flow compensator are connected by the third electromagnetic switch switching valve, which can form a compensation hydraulic circuit for closed pump control main hydraulic cylinder, and when working in four-quadrant operating condition, it forms the absorption and compensation of asymmetric flow in the main hydraulic cylinder.The present application solves the structural problem of asymmetric flow of single-outlet-rod hydraulic cylinder in closed pump control hydraulic system from the root, without relying on complex auxiliary devices or high-difficulty special pump body design, thus having important significance in improving system reliability, reducing cost and optimizing control performance.

The invention discloses an integrated device, a heat management system and a control method thereof.The integrated device is provided with a bypass channel and a valve cavity, the integrated device comprises a heat exchange assembly, a connecting assembly and a valve assembly, the heat exchange assembly is provided with a first fluid inlet, and the connecting assembly is further provided with a first communicating port, a second communicating port and a third communicating port; the first communicating port communicates with the first fluid inlet, the second communicating port communicates with one end of the bypass channel, and the valve element assembly is configured to selectively communicate at least one of the first communicating port and the second communicating port with the third communicating port; therefore, the pressure loss of the oil medium passing through the integrated device is reduced.

The invention discloses an integrated device, a heat management system and a control method of the heat management system, the integrated device is provided with a bypass channel, a valve cavity and an inlet, a connecting assembly covers a communicating port, the connecting assembly forms at least part of the wall part of the bypass channel, and the connecting assembly forms at least part of the wall part of the valve cavity; wherein the inlet is located on the upstream of the communicating port, the inlet is located on one of the connecting assembly and the heat exchange assembly, the connecting assembly is further provided with a first communicating port and a second communicating port, the first communicating port communicates with the communicating port, the second communicating port communicates with the bypass channel, and the valve element assembly is configured to communicate the first communicating port and the second communicating port with the inlet; therefore, the pressure loss of the oil medium passing through the integrated device is reduced.

The utility model relates to medical equipment field, concretely for a pressure detection device for breathing balloon safety valve, including three -way connection main part, the first end of three -way connection main part is the mask interface end, the second end is balloon connection end, the third end is detection airway, the pressure detection module includes pressure gauge and electronic alarm, the pressure gauge is passed through the communication of Bourdon tube and detection airway, the electronic alarm fixed mounting is in the outer wall of detection airway, and the gas pressure in detection airway is passed through Bourdon tube and is delivered to mechanical pressure gauge, and real -time display pressure value, the pressure of pressure -resistance type sensor synchronous detection airway, if exceeds the preset threshold value through the setting button setting, immediately triggers the buzzer and LED warning light alarm, realizes the sound and light double warning, ensures the medical staff in the first -aid fast identification abnormal high pressure (such as airway obstruction or excessive ventilation), significantly reduces the risk of gas pressure injury.

The utility model provides a fuel cell humidifier, which relates to the technical field of fuel cell auxiliary equipment, and comprises a shell, a humidifying cavity is arranged in the shell, a membrane component is arranged in the humidifying cavity, one end of the shell is in threaded connection with an outlet end cover, the other end of the shell is in threaded connection with an inlet end cover, and the inlet end cover is in threaded connection with an air inlet. A dry gas outlet is formed in one end of the outlet end cover, a dry gas inlet is formed in one end of the inlet end cover, a wet gas inlet is formed in one end of the bottom of the shell, and a wet gas outlet is formed in the other end of the bottom of the shell; six groups of small gas guide plates and a group of large gas guide plates are uniformly distributed on the inner walls of the moisture inlet and the moisture outlet in the circumferential direction, the humidifier is compact in overall structural design, each component is reasonable in layout, the size is effectively reduced, the gas guide plates are additionally arranged in the humidifier, the humidifying efficiency is improved, and the wet side gas pressure loss is reduced; and the device is convenient to install and use in a fuel cell system with limited space.