CN219673441U - Defrosting device for pressure regulating valve of high-pressure gas pipeline and high-pressure gas pipeline system - Google Patents

Abstract

The utility model discloses a defrosting device for a pressure regulating valve of a high-pressure gas pipeline and a high-pressure gas pipeline system. The proper amount of CDA can be continuously introduced into the outer cover box body, so that the periphery of the pressure regulating valve and the pipeline is filled with the CDA, and the frosting of the outer surfaces of the pressure regulating valve and the pipeline is prevented by utilizing the low dew point (up to-70 ℃) of the CDA. Meanwhile, due to the arrangement of the pressure relief valve, when the preset pressure (30 Pa for example) is reached in the box body, pressure relief can be started, namely micro-positive pressure can be formed in the outer cover box body relative to the outside, and the outside moist air can be prevented from entering. In addition, the purge of the CDA can heat a valve element and a pipeline at a low temperature, so that the temperature drop of the pressure regulating valve caused by the Joule-Thomson effect is controlled.

Description

Defrosting device for pressure regulating valve of high-pressure gas pipeline and high-pressure gas pipeline system

Technical Field

The utility model relates to the technical field of silicon carbide production, in particular to a defrosting device for a high-pressure gas pipeline pressure regulating valve and a high-pressure gas pipeline system.

Background

As a representative material of a third-generation semiconductor, silicon carbide (SiC) has the characteristics of wide forbidden band, high breakdown electric field, high thermal conductivity, high saturated electron mobility and the like, so that the semiconductor device prepared from the silicon carbide material is suitable for high-voltage, high-current, high-temperature, high-frequency and other scenes, and has very broad prospects.

In the silicon carbide production process and other chemical production processes, high-pressure gas conveyed by various pipelines can be involved, when the high-pressure gas is depressurized through a pressure regulating valve, the temperature of the pressure regulating valve and the pipelines can be reduced due to the Joule-Thomson effect, and moisture in the air can be condensed into frost and ice at the pressure regulating valve. When the situation is serious, the pressure regulating valve is frozen, the pressure regulating function is lost, and the production of the production line is affected.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to provide a defrosting device for a pressure regulating valve of a high-pressure gas pipeline and a high-pressure gas pipeline system, which can improve frosting and icing of the pressure regulating valve of the high-pressure gas pipeline and the outer surface of the pipeline caused by Joule-Thomson effect.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the utility model provides a defrosting device for a pressure regulating valve of a high-pressure gas pipeline, which comprises an outer cover box body, wherein two mounting holes for passing through high-pressure gas pipelines on two sides of the pressure regulating valve are formed in the outer cover box body, and a compressed dry air connecting pipe and a pressure relief valve which are respectively communicated with the inside of the outer cover box body are further formed in the outer cover box body.

In some preferred embodiments, the housing case has an observation portion for observing an inner space of the housing case, and the observation portion is made of a transparent material.

In some preferred embodiments, the housing case is rectangular, and a surface of the housing case is made of a transparent material.

In some preferred embodiments, the compressed dry air connection pipe is provided with a needle valve for controlling the flow.

In some preferred embodiments, the housing box is further provided with a door, the door is hinged to the main body of the housing box, and a portion, which is in contact with the main body of the housing box, around the door is further provided with a first sealing member.

In some preferred embodiments, the main body of the housing case is made of PP or stainless steel, and the door is made of transparent acrylic.

In some preferred embodiments, the housing case includes a main case portion having a mounting opening and a case back plate for closing the mounting opening, and the two mounting holes are located at end surfaces of the main case portion contacting the case back plate.

In a second aspect, the present utility model further provides a high-pressure gas pipeline system, which includes a high-pressure gas pipeline, a pressure regulating valve, and the defrosting device, wherein the housing box is installed in the high-pressure gas pipeline, and the pressure regulating valve is located in the housing box.

In some preferred embodiments, a second seal is provided between the mounting hole and the high pressure gas conduit.

In some preferred embodiments, the pressure regulating valve is located at a middle position inside the outer cover box body, and the distance between two connecting positions of the pressure regulating valve and the high-pressure gas pipeline and the mounting holes on two sides is greater than 10cm.

The embodiment of the utility model has the beneficial effects that: when the defrosting device is installed on a high-pressure gas pipeline with a pressure regulating valve, a proper amount of Compressed Dry Air (CDA) can be continuously introduced into the outer cover box body through a compressed dry air connecting pipe, so that the pressure regulating valve and the periphery of the pipeline are filled with the CDA, and the frosting on the outer surfaces of the pressure regulating valve and the pipeline is prevented by utilizing the low dew point of the CDA (the dew point of the CDA can reach-70 ℃). Meanwhile, due to the arrangement of the pressure relief valve, when the preset pressure (30 Pa for example) is reached in the box body, pressure relief can be started, namely micro-positive pressure can be formed in the outer cover box body relative to the outside, and the outside moist air can be prevented from entering. In addition, the purge of the CDA can heat a valve element and a pipeline at a low temperature, so that the temperature drop of the pressure regulating valve caused by the Joule-Thomson effect is controlled.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a housing case of a defrosting device for a high-pressure gas pipe pressure regulating valve according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a box back plate of a housing box of a defrosting device for a high-pressure gas pipeline pressure regulating valve according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a defrosting device for a pressure regulating valve of a high-pressure gas pipeline according to an embodiment of the present utility model installed on the high-pressure gas pipeline;

fig. 4 is a schematic structural view of a high-pressure gas pipe with a regulating valve for installing a defroster according to an embodiment of the present utility model;

fig. 5 is a schematic side view of the installation of the housing case and the high-pressure gas pipe of the defroster according to the embodiment of the present utility model.

Icon 10-housing case; 101-mounting holes; 102-a pressure relief valve mounting port; 110-a main tank portion; 111-compressed dry air connection; 112-a pressure relief valve; 113-needle valve; 114-box door; 115-handle; 116-a first seal; 117-a second seal; 118-a pressure gauge; 120-a box backboard; 121-a back plate threaded hole; 20-a pressure regulating valve; 30-high pressure gas pipeline.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

First embodiment

Referring to fig. 1 to 3, the present utility model provides a defrosting device for a high pressure gas pipe pressure regulating valve, which includes a housing case 10, and two mounting holes 101 for passing high pressure gas pipes 30 on both sides of a pressure regulating valve 20 are provided on the housing case 10. The outer casing 10 is further provided with a compressed dry air connection pipe 111 and a pressure release valve 112 which are respectively communicated with the inside thereof.

When the defrosting device is mounted on the high-pressure gas pipe 30 with the pressure regulating valve 20, the pressure regulating valve 20 is positioned in the outer cover box 10, and a proper amount of Compressed Dry Air (CDA) is continuously introduced into the outer cover box 10 through the compressed dry air connecting pipe 111, so that the pressure regulating valve 20 and the periphery of the pipe are filled with CDA, and the low dew point (CDA dew point can reach-70 ℃) of the CDA is utilized to prevent frosting of the pressure regulating valve 20 and the outer surface of the pipe. Meanwhile, the pressure release valve 112 is arranged on the outer cover box body 10, so that pressure release can be started when the inside of the outer cover box body 10 reaches the preset pressure (for example, 30 Pa), namely, micro positive pressure can be formed in the outer cover box body 10 relative to the outside, and the outside moist air can be prevented from entering. The CDA purge may also heat a low-temperature valve element or a low-temperature pipe, so that the temperature drop of the pressure regulating valve 20 due to the joule-thomson effect is controlled.

Specifically, the cover case 10 is provided mainly to enclose the pressure regulating valve 20, and the pressure regulating valve 20 can be accommodated in the cover case 10, so that in general, there is no requirement for the shape of the cover case 10, as long as an inner cavity covering the pressure regulating valve 20 can be formed. Specifically, in this embodiment, the housing case 10 has a rectangular parallelepiped shape, but in other embodiments, the housing case 10 may have a cylindrical shape or a spherical shape.

The two mounting holes 101 provided on the outer cover case 10 are for allowing the high pressure gas pipes 30 on two sides of the pressure regulating valve 20 to pass through, so that the pressure regulating valve 20 is located in the outer cover case 10, and the two mounting holes 101 may be symmetrically provided along the middle of the outer cover case 10, so that the pressure regulating valve 20 is located in the middle of the outer cover case 10. For example, in the present embodiment, the two mounting holes 101 are provided at the bottoms of the two opposite side surfaces of the outer cover case 10 and are located at the middle positions of the bottoms, so that the pressure regulating valve 20 can be located at the middle position of the outer cover case 10 as shown in fig. 3, and since the pressure regulating valve 20 has a certain height, that is, there is a certain extension in the vertical direction of the outer cover case 10. Thus, this arrangement facilitates the CDA entering the housing case 10 to adequately purge and act on the pressure regulating valve 20. In addition, this arrangement can enable the high-pressure gas pipe 30 connected to both sides of the pressure regulating valve 20 to be partially located in the housing case 10 by adjusting the distance between the two mounting holes 101 of the housing case 10, that is, the length of the housing case 10 between the two mounting holes 101, so that CDA can also act on the high-pressure gas pipe 30 of this portion.

Of course, in other embodiments, the positions of the two mounting holes 101 may be adjusted so long as the pressure regulating valve 20 can be positioned in the housing case 10.

The size of the housing case 10 is not limited in this embodiment, and may be customized according to the valve size and the actual situation in the field.

Further, referring again to fig. 1, the housing case 10 is further provided with a door 114, the door 114 is hinged to the main body portion of the housing case 10, and a portion of the periphery of the door 114 in contact with the main body portion of the housing case 10 is further provided with a first seal 116. The pressure regulating valve 20 can be operated by a person by opening the door 114, and the maintenance and the replacement of the valve are facilitated. The first sealing member 116 may be a sealing rubber ring, and the arrangement of the first sealing member 116 may enable the arrangement position of the box door 114 to have a better sealing effect, so that gas is not easy to leak out from the connection position of the box door 114, so as to better maintain the preset pressure in the outer cover box 10.

A handle 115 is further provided on the door 114 in the present embodiment to facilitate the opening and closing of the door 114. Meanwhile, the outer cover box body 10 is further provided with a pressure gauge 118 communicated with the inside, so that the pressure inside the outer cover box body 10 can be conveniently observed and controlled.

In a factory, the high-pressure gas pipe 30 is normally put into operation, that is, the housing case 10 of the embodiment needs to be directly mounted to a fixed pipe. Accordingly, for ease of installation, referring again to fig. 1 and 2, the housing case 10 includes a main case portion 110 having an installation opening and a case back 120 for closing the installation opening, and two installation holes 101 are located at end surfaces of the main case portion 110 that are in contact with the case back 120. The two mounting holes 101 are semicircular in shape, and the size of the semicircular mounting holes 101 is determined by the diameter size of the high-pressure gas pipe 30 so that the high-pressure gas pipe 30 can be entirely placed in the semicircular mounting holes 101, and then the mounting opening of the main tank portion 110 is closed by the tank back plate 120.

Of course, in other embodiments, the box back plate 120 may be replaced by a half box with an opening, which is matched with the main box 110, that is, the semi-circular mounting hole 101 has a diameter corresponding to that of the high-pressure gas pipeline 30, and the half box also has a semi-circular hole with the same size as that of the mounting hole 101, and then can be combined with the main box 110 to form a complete box and limit and seal the high-pressure gas pipeline 30.

Referring to fig. 2, in the present embodiment, four corners of the case back 120 have four back-plate screw holes 121, and the case back 120 is screw-coupled with the main case 110 through the four back-plate screw holes 121. A sealing member is further provided between the case back plate 120 and the main case portion 110.

A pressure release valve mounting opening 102 is arranged on one side surface of the main box body 110, the pressure release valve mounting opening 102 is a through hole penetrating through the side surface, the compressed dry air connecting pipe 111 and the main box body 110 are detachably connected through the pressure release valve mounting opening 102, the specific connection mode can be in threaded connection, namely, one end of the compressed dry air connecting pipe 111, which is connected with the main box body 110, is provided with external threads, and the pressure release valve mounting opening 102 is provided with internal threads matched with the external threads of the compressed dry air connecting pipe 111. The screw connection can be easily installed and transported, and also be easily maintained and replaced when the compressed dry air connection pipe 111 is damaged. Furthermore, the compressed dry air connection 111 is a quick connection tube, which can be quickly plugged into a transport line for compressed dry air.

It should be noted that, in other embodiments, the position of the relief valve mounting opening 102 may be adjusted as needed, for example, the relief valve mounting opening 102 may be disposed on a side surface or a top surface or a bottom surface having the mounting hole 101.

Further, a needle valve 113 for controlling the flow rate is provided on the compressed dry air connection pipe 111. The needle valve 113 can precisely control the flow rate of the Compressed Dry Air (CDA), and thus the amount of gas introduced into the housing case 10 can be made appropriate, and no waste is caused.

Further, in order to be able to observe the situation inside the housing case 10 in real time, for example, whether or not frosting and icing occur, the housing case 10 may be provided with an observation portion for observing the internal space thereof, and the observation portion may be made of a transparent material. Specifically, in this embodiment, the observation portion is a door 114, and the door 114 is made of a transparent material, for example, transparent acrylic.

In other embodiments, the observation portion may be provided on the side surface of the housing case 10, or one side surface may be made of a transparent material, or all the materials of the housing case 10 may be made of transparent materials.

Since the housing case 10 is in the factory environment for a long time, a durable material should be selected, and in this embodiment, the main body portion of the housing case 10 (including the case back plate 120) is made of PP or stainless steel, except for the case door 114, which is made of a transparent material.

Second embodiment

Referring to fig. 3 and 4, the present embodiment further provides a high pressure gas piping system including a high pressure gas piping 30, a pressure regulating valve 20, and the defrosting device of the first embodiment, the housing case 10 is installed to the high pressure gas piping 30, and the pressure regulating valve 20 is located in the housing case 10.

In this embodiment, the relief valve 112 is in the bottom state when installed, i.e., the relief valve 112 can be used for drainage purposes in addition to the relief function.

Further, referring to fig. 5, a second seal 117 is provided between the mounting hole 101 and the high pressure gas pipe 30. That is, the second sealing member 117 is a sealing rubber, and the connection portion has an opening, and the high-pressure gas pipe 30 may be extruded into the inside of the sealing rubber from the opening, and then the sealing rubber seals the connection portion of the mounting hole 101. By the above arrangement, the compressed dry air is discharged from the pressure release valve 112 only, so that the pressure is conveniently controlled to be a preset value, for example, the pressure difference in the box body relative to the outside is preferably larger than 30Pa, and the pressure release valve 112 can be opened to release pressure when the pressure is reached.

Further, since the pressure regulating valve 20 itself reduces the temperature regulated by the pressure regulating valve 20 due to the joule-thomson effect at the time of pressure reduction, and the pipe connected to the pressure regulating valve 20 also reduces the temperature partially, in this embodiment, the pressure regulating valve 20 is located at the middle position inside the housing case 10, and the distance between the two connection points of the pressure regulating valve 20 and the high pressure gas pipe 30 and the mounting holes 101 on both sides is greater than 10cm. That is, the high-pressure gas pipes 30 of at least 10cm on both sides of the pressure regulating valve 20 are also located in the housing case 10 except that the pressure regulating valve 20 is located in the housing case 10, so that the phenomena of frosting and icing of the pressure regulating valve 20 and the high-pressure gas pipes 30 close thereto can be sufficiently alleviated.

In summary, the embodiments of the present utility model have the following advantages:

1. the safety is high. The method can be applied to various occasions, in particular to flammable and explosive occasions, pipelines for conveying flammable and explosive or highly toxic gases, other pipelines which cannot use electric tracing, and the like.

2. Easy to operate. CDA is compressed dry air, is harmless to personnel, and can be operated at will. The utility model has simple operation and can open/close the CDA purging according to the actual condition of the site.

3. The application range is wide, and the method is suitable for various gas pipelines. The temperature of the outer surface of the pressure regulating valve 20 on the gas pipeline, which is caused by the Joule-Thomson effect, is not as low as-70 ℃, so that frosting and icing of the pressure regulating valve can be effectively prevented. The purge flow rate of the CDA may be increased according to the actual situation, and the outer surface temperature of the pipe and the pressure regulating valve 20 may be adjusted by CDA heat exchange.

4. The cost is low. CDA is low in preparation cost and is used everywhere in various factories. Compared with other methods for preventing pipelines and valves from frosting, such as pipeline valve electric heating, the utility model has the advantages of lower initial input cost and lower operation and maintenance cost, and can simultaneously ensure the operation convenience of the valves.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The defrosting device for the high-pressure gas pipeline pressure regulating valve is characterized by comprising an outer cover box body (10), wherein two mounting holes (101) used for allowing high-pressure gas pipelines (30) on two sides of the pressure regulating valve (20) to pass through are formed in the outer cover box body (10), and a compressed dry air connecting pipe (111) and a pressure relief valve (112) which are respectively communicated with the inside of the outer cover box body are further formed in the outer cover box body (10).

2. The defrosting apparatus as claimed in claim 1, wherein the housing case (10) has an observation portion for observing an inner space thereof, and the observation portion is made of a transparent material.

3. The defrosting apparatus as claimed in claim 2, wherein the housing case (10) has a rectangular parallelepiped shape, and one surface of the housing case (10) is made of a transparent material.

4. Defroster according to claim 1, characterized in that a needle valve (113) for controlling the flow is provided on the compressed dry air connection tube (111).

5. The defrosting apparatus as claimed in claim 1, characterized in that the housing case (10) is further provided with a door (114), the door (114) is hinged with a main body portion of the housing case (10), and a portion of the periphery of the door (114) in contact with the main body portion of the housing case (10) is further provided with a first seal member (116).

6. The defrosting apparatus as claimed in claim 5, wherein the main body portion of the housing case (10) is made of PP or stainless steel, and the door (114) is made of transparent acryl.

7. The defrosting apparatus as claimed in claim 1, wherein the housing case (10) includes a main case portion (110) having a mounting opening and a case back plate (120) for closing the mounting opening, and the two mounting holes (101) are located at end surfaces of the main case portion (110) that are in contact with the case back plate (120).

8. A high pressure gas piping system, characterized in that it comprises a high pressure gas piping (30), a pressure regulating valve (20) and a defrosting device according to any one of claims 1 to 7, said housing case (10) being mounted to said high pressure gas piping (30), and said pressure regulating valve (20) being located in said housing case (10).

9. The high pressure gas piping system according to claim 8, characterized in that a second seal (117) is provided between the mounting hole (101) and the high pressure gas piping (30).

10. The high-pressure gas pipeline system according to claim 8, wherein the pressure regulating valve (20) is located at an intermediate position inside the housing case (10), and the distance between two connecting positions of the pressure regulating valve (20) and the high-pressure gas pipeline (30) and the mounting holes (101) on both sides is greater than 10cm.