Pressure regulating device with heating function

Abstract

The utility model relates to a kind of pressure regulating equipment with heating function, including pressure regulating box, water tank, air inlet pipeline, air outlet pipeline and pressure regulating component, pressure regulating component is used to communicate the air inlet pipeline with air outlet pipeline, the pressure regulating box cover is arranged in air inlet pipeline, air outlet pipeline and the outside of pressure regulating component, the water tank is installed in pressure regulating box below, electric heating wire is provided in the water tank, the outside of air inlet pipeline and air outlet pipeline is equipped with spiral heating pipe, the spiral heating pipe is communicated with water tank, pressure regulating box is also provided with heat radiation platform, the heat radiation platform is located just below pressure regulating component, the heat radiation platform is liftable. The design is heated to air inlet pipeline, air outlet pipeline and pressure regulating component by water tank cooperation spiral heating pipe and heat radiation platform, prevent its surface icing, avoid the valve in pressure regulating component inside frost icing, so that pressure regulating component can quickly regulate the natural gas passing through, ensure that pressure regulating precision is up to standard.

Description

Technical Field

[0001] This utility model relates to the field of gas pressure regulating equipment technology, and in particular to a pressure regulating equipment with heating function. Background Technology

[0002] With the rapid urbanization in my country, the number of houses in urban and rural areas has increased significantly, and residents generally live in concentrated communities. The use of natural gas as a new energy source is becoming increasingly widespread. Natural gas is transported by gas companies through pipelines to densely populated residential areas. During the natural gas transmission process, several pressure regulators, namely gas pressure regulating boxes, are required. Gas pressure regulating boxes are key equipment in gas transmission pipelines, primarily responsible for regulating and stabilizing pipeline system pressure, controlling gas flow, and protecting the system from excessively high or low outlet pressure. In some low-temperature environments, such as the winters in Northeast China, when the pressure regulating box is adjusting the pressure of the natural gas inside the pipeline, the low ambient air temperature can cause hydrates (ice blockage) in the transported natural gas to clog pipelines, valves, or pressure regulating devices, directly reducing or interrupting gas transmission. Freezing can also lead to pipeline deformation, valve seal failure, and even pipeline rupture. Utility Model Content

[0003] Therefore, it is necessary to provide a pressure regulating device with heating function to address the above problems.

[0004] A pressure regulating device with heating function includes a pressure regulating box, a water tank, an air inlet pipe, an air outlet pipe, and a pressure regulating component. The pressure regulating component connects the air inlet pipe and the air outlet pipe. The pressure regulating box covers the outside of the air inlet pipe, the air outlet pipe, and the pressure regulating component. The water tank is installed below the pressure regulating box and contains an electric heating wire. A spiral heating tube is sleeved on the outside of the air inlet pipe and the air outlet pipe and is connected to the water tank. A heat radiation platform is also installed inside the pressure regulating box and is located directly below the pressure regulating component. The heat radiation platform is liftable.

[0005] Preferably, the heat radiation table includes a lifting screw, a bellows, a guide column, and a worktable. The worktable is hollow. The bellows is used to connect the water tank and the worktable. The guide column is vertically installed inside the pressure regulating box, and its upper end passes through the edge of the worktable. The lifting screw is used to drive the worktable to move up and down along the guide column.

[0006] Preferably, a limit ring is also provided on the guide post.

[0007] Preferably, the spiral heating tube is equipped with a pressure booster.

[0008] Preferably, the outer sides of the air inlet pipe and the air outlet pipe are also wrapped with heat insulation pipes.

[0009] The advantages of this utility model are: This design uses a water tank in conjunction with a spiral heating tube and a heat radiation table to heat the inlet pipe, outlet pipe and pressure regulating component, preventing ice formation on their surfaces and avoiding frost or ice buildup on the valves inside the pressure regulating component. This allows the pressure regulating component to quickly regulate the pressure of the natural gas passing through, ensuring that the pressure regulation accuracy meets the standards. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of a pressure regulating device with heating function as one embodiment;

[0011] Figure 2 This is a front view schematic diagram of a pressure regulating device with heating function. Detailed Implementation

[0012] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0015] like Figures 1-2As shown, a pressure regulating device with heating function includes a pressure regulating box 1, a water tank 2, an air inlet pipe 3, an air outlet pipe 4, and a pressure regulating component 5. The pressure regulating component 5 is used to connect the air inlet pipe 3 and the air outlet pipe 4. The pressure regulating box 1 covers the outside of the air inlet pipe 3, the air outlet pipe 4, and the pressure regulating component 5. The water tank 2 is installed below the pressure regulating box 1 and is equipped with an electric heating wire. A spiral heating tube 6 is sleeved on the outside of the air inlet pipe 3 and the air outlet pipe 4. The spiral heating tube 6 is connected to the water tank 2. A heat radiation table 7 is also provided inside the pressure regulating box 1. The heat radiation table 7 is located directly below the pressure regulating component 5 and is liftable. Specifically, in this embodiment, the pressure regulating box 1 is used to protect the inlet pipe 3, the outlet pipe 4, and the pressure regulating component 5. The pressure regulating component 5 is used to regulate the output natural gas pressure. For example, if the natural gas pressure input into the inlet pipe 3 is 1 to 5 MPa, after being regulated by the pressure regulating component 5, the natural gas pressure output from the outlet pipe 4 can be reduced to 2 to 20 kPa, resulting in low-pressure gas transmission and reduced gas loss. The pressure regulating chamber 1 is installed outdoors. Under low-temperature conditions, the surface of the pressure regulating component 5 is easily frozen. To alleviate this situation, a water tank 2 is installed at the bottom of the pressure regulating chamber 1. At the same time, a temperature sensor is integrated into the pressure regulating component 5. When the real-time temperature detected by the temperature sensor is lower than the preset value, the electric heating wire in the water tank 2 is energized to heat the water in the water tank 2. Because the water tank 2 is located below the pressure regulating chamber 1, the heated water vapor automatically rises and enters the spiral heating tube 6. There are two sets of spiral heating tubes 6, which are respectively fitted onto the air inlet pipe 3 and the air outlet pipe 4. When steam flows through the spiral heating tube 6, the surface becomes hot, which can prevent water vapor from condensing into ice. Hanging on the air inlet pipe 3 and the air outlet pipe 4, it plays a heating role, heating the natural gas passing through the air inlet pipe 3 and the air outlet pipe 4, which facilitates the pressure regulating component 5 to pressurize the natural gas. To heat the pressure regulating component 5, a heat radiation platform 7 is installed below it. The heat radiation platform 7 is height-adjustable; when it rises closer to the pressure regulating component 5, the distance between them decreases, resulting in stronger heat radiation and a more effective heating of the component, preventing ice buildup on its surface. When heat radiation is not needed, the heat radiation platform 7 descends, moving away from the pressure regulating component 5. This prevents the platform from interfering with maintenance personnel's disassembly and replacement of internal components and ensures normal maintenance operations. It should be noted that the heat radiation platform 7 can generate heat electrically or by connecting to the water tank 2, utilizing the steam generated by the tank to radiate heat to the pressure regulating component 5. This design, through the water tank, spiral heating pipe, and heat radiation platform, heats the inlet and outlet pipes and the pressure regulating component, preventing surface icing and avoiding frost or ice buildup on the internal valves. This allows the pressure regulating component to quickly regulate the pressure of the passing natural gas, ensuring accurate pressure regulation.

[0016] like Figures 1-2As shown, the heat radiation table 7 includes a lifting screw 71, a bellows 72, a guide column 73, and a worktable 74. The worktable 74 is hollow. The bellows 72 connects the water tank 2 and the worktable 74. The guide column 73 is vertically installed inside the pressure regulating box 1, with its upper end penetrating the edge of the worktable 74. The lifting screw 71 drives the worktable 74 to rise and fall along the guide column 73. Specifically, the bellows 72 connects the water tank 2 and the worktable 74, and the bellows 72 can extend and retract as the worktable 74 rises and falls. The lifting screw 71 is electrically driven, and its principle is existing technology, which will not be described in detail here. The guide column 73 serves as a guide to prevent the worktable 74 from deviating during lifting and lowering. When the electric heating wire in the water tank 2 heats the water, the evaporated gas enters the worktable 74 through the bellows 72, causing the surface of the worktable 74 to heat up. At this time, the lifting screw 71 drives the worktable 74 to rise, bringing it closer to the pressure regulating component 5. The pressure regulating component 5 is heated through thermal radiation, preventing ice formation on its surface, which could clog valves and cause gas supply interruption. After heating is complete, when normal maintenance is required on the valves or pipe joints inside the pressure regulating component 5, the lifting screw 71 drives the worktable to return to its original position, away from the pressure regulating component 5.

[0017] like Figures 1-2 As shown, the guide post 73 is also provided with a limit ring 731. There are two limit rings 731 on each guide post 73, and they are spaced apart. The worktable 74 is located between the two limit rings 731, which limits the highest and lowest height of the worktable 74 and prevents the worktable 74 from exceeding the limit and colliding with the bottom of the pressure regulating box 1 and the lower end of the pressure regulating component 5.

[0018] like Figures 1-2 As shown, a booster 61 is provided on the spiral heating tube 6 to accelerate the flow rate of high-temperature gas inside the spiral heating tube 6, thereby accelerating the heat exchange between the spiral heating tube 6 and the inlet pipe 3 and the outlet pipe 4, resulting in higher heat exchange efficiency.

[0019] Specifically, an insulation pipe is wrapped around the outside of the air inlet pipe 3 and the air outlet pipe 4. The insulation pipe reduces the heat loss when the spiral heating pipe 6 is heated. At the same time, when the insulation pipe is made of polyurethane or rock wool, it can resist the cold and corrosive environment and prevent the air inlet pipe and the air outlet pipe from freezing, cracking or rusting.

[0020] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pressure regulating device with heating function, characterized in that: The device includes a pressure regulating chamber, a water tank, an air inlet pipe, an air outlet pipe, and a pressure regulating assembly. The pressure regulating assembly connects the air inlet pipe and the air outlet pipe. The pressure regulating chamber covers the outside of the air inlet pipe, the air outlet pipe, and the pressure regulating assembly. The water tank is installed below the pressure regulating chamber and contains an electric heating wire. The air inlet pipe and the air outlet pipe are fitted with spiral heating tubes that are connected to the water tank. The pressure regulating chamber also contains a heat radiation platform located directly below the pressure regulating assembly. The heat radiation platform is height-adjustable.

2. The pressure regulating device with heating function as described in claim 1, characterized in that: The heat radiation table includes a lifting screw, a bellows, a guide column, and a worktable. The worktable is hollow. The bellows is used to connect the water tank and the worktable. The guide column is vertically installed inside the pressure regulating box, and its upper end passes through the edge of the worktable. The lifting screw is used to drive the worktable to move up and down along the guide column.

3. A pressure regulating device with heating function as described in claim 2, characterized in that: A limit ring is also provided on the guide post.

4. A pressure regulating device with heating function as described in claim 1, characterized in that: A booster is installed on the spiral heating tube.

5. A pressure regulating device with heating function as described in claim 1, characterized in that: The air inlet and outlet pipes are also wrapped with insulation pipes.

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