16 results about "Fusible plug" patented technology

The invention provides fusible plug manufacturing equipment, and relates to the technical field of fusible plug manufacturing. The fusible plug manufacturing equipment comprises a box body provided with a containing cavity and a workbench, and the workbench is provided with a casting platform; the heating assembly is arranged in the containing cavity and located under the casting platform, and the heating assembly is used for heating the casting platform; the cooling assembly is arranged in the containing cavity and comprises a cooling plate and a cooling channel arranged in the cooling plate, the cooling plate is located between the casting platform and the heating assembly, and the cooling assembly can transfer heat generated by the heating assembly to the casting platform; the control assembly is arranged in the box body and used for controlling starting and stopping of the heating assembly and the cooling assembly. And the production efficiency of the fusible plug can be improved.

This hydrogen coloring device is equipped with: a hydrogen tank; a fusible plug valve connected to the hydrogen tank; a colorant tank connected to the hydrogen tank via the fusible plug valve and accommodating a colorant; an ejector, connected to the colorant tank, that mixes the colorant with hydrogen gas discharged from the hydrogen tank through the fusible plug valve; and a branch line, connected to the fusible plug valve and the colorant tank, that diverts at least a portion of the hydrogen gas discharged from the hydrogen tank through the fusible plug valve to the colorant tank, wherein the hydrogen gas discharged from the hydrogen tank through the fusible plug valve changes at least a portion of the internal pressure of the colorant tank.

The embodiment of the present application provides a wellhead safety control system, which is used for improving the working efficiency and reliability of the wellhead safety control system. The control system comprises a high-pressure control system and a low-pressure control system. The high-pressure control system comprises a ground safety valve high-pressure control main circuit, a ground safety valve high-pressure control branch circuit, a downhole safety valve high-pressure control main circuit and a downhole safety valve high-pressure control branch circuit, and is used for providing high-pressure hydraulic pressure for the control system. The low-pressure control system comprises a fusible plug control branch circuit, a ground safety valve low-pressure control branch circuit and a downhole safety valve low-pressure control branch circuit, and is used for controlling the high-pressure control system to provide low-pressure hydraulic pressure.

The invention discloses a fusing type safety valve which comprises a valve body, a valve element, an end cover, a fusible plug, a spring and a damping plug. The valve element is arranged in the valve body cavity, a first containing cavity and a second containing cavity are formed in the two ends of the valve element, the first containing cavity is communicated with the outside by controlling the oil liquid inlet, and the second containing cavity is sealed by a fusible plug filled with fusible materials. The spring is located in the second containing cavity and acts on the valve element so that the valve element can be kept in a normally-open or normally-closed state. For a normally-open and fusing type safety valve, once the temperature of the environment or oil rises to the melting point of the fusible material, the fusible plug melts, so that a pressure difference is generated between the two containing cavities, and the pressure difference overcomes the spring force to close the valve. For normally-closed and fusing type safety valves, fusible materials are melted, and the same pressure difference can overcome spring force to open the valves. According to the invention, the opening and closing of the valve can still be realized under the condition of power failure when a system fault occurs or a fire occurs, so that the safe operation of the system is guaranteed, the loss caused by the system fault or the fire is reduced, and the overall protection level is improved.

An embodiment of an outdoor unit of a refrigeration cycle device includes a compressor, a pressure container that is connected to the compressor, a relief pipe that is connected to the pressure container, and a fusible plug that plugs an opening that is formed on the relief pipe. The relief pipe has a connector that is connected to the pressure container, and at least one bend that is formed on a portion that is located between the connector and the opening.

To improve workability during servicing in a refrigeration cycle device comprising a fusible plug.SOLUTION: A refrigeration cycle device is configured such that at least part of a refrigerant circuit through which a refrigerant circulates is arranged inside a housing that forms an outer shell and has a detachable front face part. At least part of the refrigerant circuit comprises a condenser, a pressure vessel in which the refrigerant is stored, a first pipe that connects the condenser and the pressure vessel and through which the refrigerant circulates, and a pressure release device that has a fusible plug, is provided in the first pipe and releases the refrigerant when a pressure in the first pipe reaches a predetermined pressure. A portion of the first pipe where the pressure release device is provided is arranged inside the housing, toward the front face part.SELECTED DRAWING: Figure 4

1. Name of this design product: Integrated container wellhead safety control system. 2. Application of this design: Used for onshore oil and gas extraction, integrating a hydraulic control unit (high-pressure hydraulic system, low-pressure hydraulic system, hydraulic control system, fusible plug circuit), RTU control unit, power supply and distribution system and auxiliary equipment facilities into one unit. It has many functions such as controlling downhole safety valves, wellhead main safety valves, wing safety valves, regulating electric switches, throttle valves, fire detection, combustible gas monitoring, data acquisition, display and transmission, etc., to meet the normal and stable use of internal facilities under harsh working conditions. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention belongs to the field of natural gas storage equipment manufacturing, and particularly relates to a medium-low pressure adsorption gas cylinder with a natural gas adsorbent and a manufacturing method of the medium-low pressure adsorption gas cylinder. The manufacturing method comprises the following steps: (I) performing fiber surface modification, winding a resin matrix, performing gradient curing, and performing cutting, polishing and testing to obtain the gas cylinder shell; (II) pretreating the wood raw material, carbonizing, activating, cleaning, drying, crushing and modifying to obtain the natural gas adsorbent; and (III) vibration filling of an adsorbent, installation of a filter device, installation of a safety valve and a fusible plug, welding of an end socket and spraying of an anti-corrosion coating. The gas cylinder prepared by the method has the advantages of high gas storage efficiency, safety, durability, light weight and long service life of the adsorbent under medium and low pressure, solves the technical problems in the prior art, and is suitable for natural gas storage in multiple fields.

A testing device for airtightness testing of push-in fusible plugs, belonging to the field of fusible plugs. The testing device includes a base and a cover plate; the base and cover plate are connected by a hexagonal head bolt; a washer is installed on the contact surface between the hexagonal head bolt and the cover plate; a boss is provided in the middle of the base, and a first sealing ring is provided on the boss; a recess is provided at the contact point between the middle of the cover plate and the boss of the base; the boss and the recess achieve a sealed connection between the base and the cover plate. The fusible plug installation method of this invention is from the inside out, consistent with the inflation method during product use, solving the problem of lacking a testing device for airtightness testing of push-in fusible plugs, and eliminating safety hazards when the air pressure is from the outside in during airtightness testing; this invention facilitates airtightness testing of push-in fusible plugs and improves the testing efficiency of push-in fusible plugs.

The application aims to provide a high-efficiency energy-saving type hydraulic control safety valve actuator and a use method thereof, and belongs to the technical field of valve control. The actuator comprises an oil tank, a high-low pressure valve group and a fusible plug. One end of the bottom of the oil tank is provided with pipeline I. A hand pump, a check valve, a main oil source accumulator and a main oil source pressure gauge are sequentially arranged on the pipeline I. The high-low pressure valve group is connected with a field gas source. The fusible plug is connected with a pilot oil source accumulator and a pilot pressure gauge I through pipeline II. The top of the oil tank is connected with the pipeline I through pipeline III. A stop valve II and a hydraulic control pilot valve are arranged on the pipeline III. A pipeline IV is arranged between the pipeline III and the pipeline I. A stop valve I is arranged on the pipeline IV. The hydraulic control pilot valve is connected with the pipeline II through pipeline V. The application can prolong the pressure maintaining time of the hydraulic control safety valve and reduce the pressurizing frequency of the hand pump.

A refrigeration cycle apparatus having a housing in which at least a portion of a refrigerant circuit through which refrigerant circulates is located, the housing forming an outer shell and having a front side portion, the front side portion being removable, wherein the at least portion of the refrigerant circuit includes a condenser, a pressure container in which the refrigerant is reserved, a first pipe through which the refrigerant flows, the first pipe connecting the condenser and the pressure container, and a pressure relief device having a fusible plug, provided on the first pipe, and configured to release the refrigerant when a pressure in the first pipe reaches a predetermined pressure, and a portion of the first pipe, on which the pressure relief device is provided, is located beside the front side portion in the housing.

The present invention provides a bottle valve for a high-pressure hydrogen supply system, comprising a first pipeline, a first inlet / outlet, a second inlet / outlet, a third inlet / outlet, a temperature sensor, a relief valve, a first filter, a second filter, a first manual stop valve, a second manual stop valve, an electromagnetic one-way valve, a bottle body, a bottle valve body, a second pipeline, a third pipeline and a fusible plug relief valve; the present invention facilitates the deflation during daily repair and maintenance of the hydrogen supply system, and at the same time reduces the use of tees and pipe accessories when multiple hydrogen supply systems are used.

Provided is a tank equipped with a container body to store hydrogen gas, a self-closing valve provided in the container body and configured to start and stop discharging the hydrogen gas by opening and closing, a fusible plug provided in the container body and configured to open when a predetermined temperature is reached to release the gas in the tank, and a member that delays heat transfer to the self-closing valve later than to the container body and / or a member that promotes heat transfer to the fusible plug when the hydrogen cartridge is heated.

The invention discloses a test system and a test method for a fusible plug of a hydraulic coupler, and belongs to the technical field of hydraulic couplers. The test system comprises a test main body device. The test system further comprises a driving device which is in transmission connection with the test main body device and is used for driving the test main body device to rotate. The test system further comprises a test connecting device, and the test connecting device is arranged on the test main body device and used for arranging the fusible plug. The testing system further comprises a circulating device, the circulating device is matched with the testing main body device and the testing connecting device to form a working oil circulating flow channel, and working oil circularly flows in the working oil circulating flow channel and flows through the fusible plug. In this way, the actual working performance of the fusible plug can be accurately reflected, limit working condition testing is achieved, and energy consumption is reduced.

The utility model relates to the technical field of valves, in particular to a manual steel cylinder valve with a safety device, which comprises a valve body, a bonnet, a valve rod, a hand wheel, a plug core and a fusible plug, the bonnet is arranged inside the valve body, the outer wall of the bonnet is in threaded connection with the inner wall of an upper port of the valve body, the valve rod is arranged inside the bonnet, and the outer wall of the valve rod is in threaded connection with the inner wall of the bonnet. The steel ball, the piston, the pressing ring, the diaphragm and the valve clack are sequentially arranged in the valve body on the lower portion of the valve rod from top to bottom, a first flow channel opening is formed in a lower port of the valve body, a second flow channel opening and a safety detection opening are formed in the two side faces of the valve body respectively, the plug core is arranged on the outer side of the second flow channel opening, and the fusible plug is arranged on the outer side of the safety detection opening. The fusible plug and the rupture disk are additionally arranged on the valve body to form a safe blasting mechanism, and multiple layers of diaphragms and multiple groups of sealing rings are arranged in the valve body to be matched, so that the overall sealing performance is improved, leakage is prevented, and the use safety of the steel cylinder valve is improved.

The present invention discloses a fusible plug protection control method, device and unit. The method includes: when the unit is running, monitoring the temperature of the refrigerant flowing to the fusible plug; judging the range of the refrigerant temperature; if the refrigerant temperature is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, reducing the frequency of the compressor according to the current indoor temperature. During the operation of the unit, when the present invention monitors that the temperature of the refrigerant flowing to the fusible plug is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, the compressor is reduced in frequency according to the current indoor temperature to reduce the refrigerant temperature, prevent the fusible plug from melting and failing, protect the fusible plug, avoid the problem of inconvenience in maintenance and increased maintenance costs caused by the melting of the fusible plug, maintain the normal operation of the unit, protect the unit, reduce the later maintenance of the unit, reduce maintenance costs, and improve after-sales maintenance efficiency.