CN209836107U - Natural gas anti-icing stifled filter - Google Patents
Natural gas anti-icing stifled filter Download PDFInfo
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- CN209836107U CN209836107U CN201920625982.1U CN201920625982U CN209836107U CN 209836107 U CN209836107 U CN 209836107U CN 201920625982 U CN201920625982 U CN 201920625982U CN 209836107 U CN209836107 U CN 209836107U
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Abstract
The utility model relates to a natural gas filter technical field especially relates to a natural gas anti-icing stifled filter, include: the gas inlet pipe, the barrel, the filter element and the electric heating device are arranged at the opening end of the barrel, the electric heating device further comprises an electric heating element and a cover plate, the electric heating element is connected with the cover plate and extends along the length direction of the barrel, and the electric heating element extends into the filter element to heat natural gas entering the filter element; the cover plate is connected with the opening end of the cylinder body in a sealing way; terminal box, outlet duct. Through set up convenient from inside of electric heater unit in the filter core and heat the natural gas after filtering, compare with prior art, neither need large-scale equipment to put into operation, also need not consume too big running cost, and simple to operate is swift, only need with the apron fix the filter core open end can, saved a large amount of time material cost, safe and reliable can not cause the injury to the installer moreover.
Description
Technical Field
The utility model relates to a natural gas filter technical field especially relates to a natural gas anti-icing stifled filter.
Background
The natural gas filter is used for filtering impurities such as moisture, tar and dust in fuel gas, and is usually installed at the inlet end of a pressure reducing valve, a pressure relief valve, a positioning valve or other equipment to eliminate impurities in a medium, so that normal use of the valve and the equipment is protected, and the maintenance cost of the equipment is reduced.
However, in the adiabatic throttling expansion process of natural gas, due to the Joule-Thomson effect, the temperature of the natural gas is generally reduced by about 1 ℃ for every 0.2-0.3 MPa of pressure reduction. This causes the water in the filter to freeze easily due to low temperature in cold areas, which causes ice blockage and gas safety accidents.
Chinese utility model with publication number CN203700310U specially adapted to 2014 2 month 21 discloses a novel sub-station compressor natural gas filter, which utilizes the heat that the sub-station compressor produced to set up a water circulation heating device in the filter, heats the inside of the filter through the heat energy that produces in the compressor. However, the scheme of heating by using the heat of the compressor is only suitable for a natural gas compressor station, the scheme cannot be used for a large natural gas decompression station, the high and medium-pressure regulating door stations mostly adopt independent heat exchangers to heat natural gas, and a heat exchanger is independently arranged for a small medium and medium-pressure regulating box, so that the investment of the pressure regulating station is undoubtedly increased. However, the disadvantage of using the electric tracing method is that: if the natural gas flow in the pipeline is large, the electric energy consumed by heating is large, the running cost is high, and the power consumption requirement can be met only by specially equipping high-power transformation and distribution equipment. And the heat tracing cable is wrapped on the surface and then needs to be wrapped with an insulating layer, the insulating layer adopts rock wool, the fine fiber of the rock wool has different degrees of damage to the skin, eyes and lungs of installation workers, and the price is higher.
In view of the above problems, the designer is based on the practical experience and professional knowledge that are abundant for many years in engineering application of such products, and is actively researched and innovated in cooperation with the application of theory, so as to create a natural gas anti-icing and anti-blocking filter, which is more practical.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a natural gas anti-icing and anti-blocking filter, which prevents the natural gas from generating icing and blocking phenomena in the filter.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a natural gas anti-icing filter, the filter comprising:
an inlet pipe for introducing natural gas;
the cylinder body is connected with the air inlet pipe, and natural gas entering from the air inlet pipe enters the cylinder body;
the filter element is arranged in the cylinder, the cross section of the filter element is annular and extends along the length direction of the cylinder, and a filter screen is arranged on the side wall of the filter element and used for filtering impurities in natural gas;
the electric heating device is arranged at the opening end of the barrel and further comprises an electric heating element and a cover plate, wherein the electric heating element is connected with the cover plate and extends along the length direction of the barrel, and the electric heating element extends into the filter element to heat natural gas entering the filter element; the cover plate is connected with the opening end of the cylinder body in a sealing way;
the junction box is arranged on the cover plate and is used for being electrically connected with the electric heating element, and the electric heating element starts to work after the junction box is electrified;
and one end of the gas outlet pipe is connected with the filter element and used for leading out the natural gas filtered by the filter element from the cylinder.
Preferably, the sewage treatment device further comprises a sewage draining outlet which is arranged at the bottom end of the barrel body.
Preferably, the electric heating device further comprises a heat conducting sleeve, and the heat conducting sleeve further comprises a connecting part and a heat conducting part; the connecting part is connected with the inner side of the cover plate so as to be fixed on the cover plate, the heat conducting part is of a barrel-shaped structure, the electric heating part is sleeved in the heat conducting part, and the size of the heat conducting part meets the precision requirement of being sleeved in the filter element.
Preferably, the connection part of the heat conducting part and the connecting part is provided with a filter element plug, the filter element plug is of a step type tubular structure integrated with the connecting part, and the diameter of the step end face is larger than the inner diameter of the filter element so as to plug the end part of the filter element and enable natural gas to enter the air outlet pipe only from the side wall of the filter element.
Preferably, the outlet duct includes air duct and stay tube, and the air duct runs through a lateral wall of barrel and fixedly sets up, and the stay tube setting is provided with the support flange at the inside and its tip of barrel, and the end connection of support flange and filter core, the internal diameter size of support flange satisfy the precision requirement that makes all get into the outlet duct from the natural gas of filter core exhaust.
Preferably, spiral heat conducting grooves are formed in the heat conducting portion at equal intervals along the length direction of the heat conducting portion, the outer diameter of the heat conducting portion is smaller than the inner diameter of the filter element, and the size of the heat conducting portion meets the requirement of precision of extending into the filter element.
Preferably, the air duct is provided with a temperature measuring tube, and the temperature measuring tube is arranged on the outer side of the barrel and used for installing a temperature controller.
Preferably, the electric heating device is detachably fixed on the cylinder body.
Preferably, the heat-conducting sleeve is detachably fixed to the cover plate.
The utility model has the advantages that: the utility model discloses in, through set up convenient from the inside natural gas after filtering of electric heater unit in the filter core and heat, compare with prior art, neither need large-scale equipment to put into operation, also need not consume too big running cost, and simple to operate is swift, only need with the apron fix the filter core open end can, saved a large amount of time material cost, the heating pipe not with natural gas direct contact moreover, safe and reliable can not cause the injury to the installer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a natural gas anti-icing and anti-blocking filter in an embodiment of the present invention (no heat-conducting sleeve is installed);
fig. 2 is a schematic structural view of a heat-conducting sleeve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an electric heating device in an embodiment of the present invention;
fig. 4 is a schematic view of the installation structure of the filter element in the embodiment of the present invention;
FIG. 5 is a schematic structural view of a lower support of a filter cartridge according to an embodiment of the present invention;
fig. 6 is a schematic structural view of an anti-icing and anti-blocking natural gas filter according to an embodiment of the present invention.
Reference numerals: 1-air inlet pipe, 2-barrel, 3-filter element, 4-electric heating device, 5-junction box, 6-air outlet pipe, 7-sewage outlet, 41-electric heating element, 42-cover plate, 43-heat conducting sleeve, 61-air conducting pipe, 62-supporting pipe, 63-temperature measuring pipe, 431-connecting part, 432-heat conducting part, 433-filter element plug and 4321-spiral heat conducting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to solve the problem that among the prior art the moisture freezes the jam in the natural gas filter, this application embodiment provides the technical scheme who sets up heating device in the filter core, compare with prior art, only with the terminal box of this application and the other power connection in the explosion-proof box of filter can realize, do not need large-scale compressor equipment as the power, also need not special change distribution equipment, with low costs easily promotes, simple to operate moreover, compare more portably with prior art electric tracing method, the security is higher.
This embodiment is written in a progressive manner.
A natural gas anti-icing filter as shown in figure 1, the filter comprising:
an intake pipe 1 for introducing natural gas; the end of the inlet pipe 1 is provided with a mounting flange for connection with a natural gas pipeline or other devices.
The cylinder body 2 is connected with the air inlet pipe 1, and natural gas entering from the air inlet pipe 1 enters the cylinder body 2; the cylinder 2 is perpendicular to the air inlet pipe 1.
The filter element 3 is arranged in the barrel 2, the cross section of the filter element 3 is annular and extends along the length direction of the barrel 2, and a filter screen is arranged on the side wall of the filter element 3 and used for filtering impurities in natural gas; the natural gas enters the cylinder 2 from the gas inlet pipe 1, and then passes through the side wall of the filter element 3, and impurities in the natural gas are filtered through the filter screen on the side wall of the filter element 3.
The electric heating device 4 is arranged at the opening end of the barrel body 2, the electric heating device 4 further comprises an electric heating element 41 and a cover plate 42, wherein the electric heating element 41 is connected with the cover plate 42 and extends along the length direction of the barrel body 2, and the electric heating element 41 extends into the filter element 3 to heat natural gas entering the filter element 3; the cover plate 42 is connected with the opening end of the cylinder body 2 in a sealing way;
the junction box 5 is arranged on the cover plate 42 and is used for being electrically connected with the electric heating part 41, and after the junction box 5 is electrified, the electric heating part 41 starts to work;
and one end of the air outlet pipe 6 is connected with the filter element 3 and is used for leading out the natural gas filtered by the filter element 3 from the cylinder 2.
In the above-mentioned embodiment, heat the natural gas after filtering from inside through setting up convenient the following of electric heater unit 4 in filter core 3, compare with prior art, neither need large-scale equipment to put into operation, also need not consume too big running cost, and simple to operate is swift, only need with the apron fix the filter core open end can, saved a large amount of time material cost, safe and reliable moreover can not cause the injury to the installer.
Further, the filter also comprises a drain outlet 7, and the drain outlet 7 is arranged at the bottom end of the barrel 2. Intake pipe 1 sets up in the top of drain 2, and heavier impurity can descend to drain 7 department because its self gravity in the natural gas that gets into from intake pipe 1, and drain 7 is the off-state at the during operation, when needs blowdown, opens the drain and can realize the cleaning work to accumulational impurity in barrel 2.
Further, in order to make the electrical heating safer and the heat conduction more uniform, as shown in fig. 2 and 3, the electrical heating device 4 further includes a heat conduction sleeve 43, and the heat conduction sleeve 43 further includes a connection portion 431 and a heat conduction portion 432; the connecting portion 431 is connected with the inner side of the cover plate 42 to be fixed on the cover plate 42, the heat conducting portion 432 is in a barrel-shaped structure, the electric heating element 41 is sleeved in the heat conducting portion 432, and the size of the heat conducting portion 432 meets the precision requirement of being sleeved in the filter element 3. The heat-conducting sleeve 43 has the effects that on one hand, the electric heating element 41 is isolated from the natural gas, the potential safety hazard can exist in the natural gas due to the fact that an electrified conductor generates heat according to the electric heating principle, the heat-conducting sleeve 43 is arranged to completely cover the electric heating element 41, namely, an electrified element is separated from the natural gas, and the potential safety hazard is greatly reduced; in addition, the higher area of contact with the natural gas of heat of electric heating member 41 is less, and the heating effect is not good, and cladding through heat conduction sleeve 43 can be with the even conduction of heat to heat conduction sleeve 43 on, through the conduction of heat conduction sleeve 43, increased the area of contact with the natural gas to make the efficiency of natural gas heating higher, the natural gas is heated more fast.
In addition, spiral heat conduction grooves 4321 are formed in the heat conduction portion 432 at equal intervals in the longitudinal direction thereof, and the outer diameter of the heat conduction portion 432 is smaller than the inner diameter of the filter element 3, and the size thereof satisfies the accuracy requirement of being inserted into the filter element 3. The spiral heat conduction groove 4321 can store a part of heat, and meanwhile, due to the arrangement of the spiral heat conduction groove 4321 on the heat conduction part 432, gas flows spirally along the heat conduction groove in the heat conduction part, so that the gas is heated more fully.
Further, in order to make the filtering effect of the filter element 3 better, as shown in fig. 4, a filter element plug 433 is disposed at a connection position of the heat conducting portion 432 and the connection portion 431, the filter element plug 433 is a stepped tubular structure integrated with the connection portion 431, and a diameter of a stepped end surface is larger than an inner diameter of the filter element 3 so as to plug an end portion of the filter element 3, so that the natural gas enters the outlet pipe 6 only from a side wall of the filter element 3. When establishing into filter core 3 with the heat conduction portion 432 cover, the terminal surface of filter core end cap 433 and the top contact of filter core 3 can guarantee both sealing connection through the extrusion to make the most natural gas enter into to filter core 3 inside from the lateral wall of filter core 3, guaranteed the filter effect of natural gas.
Further, in order to further ensure the filtering effect of the filter element 3, as shown in fig. 5, the outlet pipe 6 includes an air duct 61 and a support pipe 62, the air duct 61 penetrates through a side wall of the cylinder 2 and is fixedly arranged, the support pipe 62 is arranged inside the cylinder 2 and the end part of the support pipe is provided with a support flange, the support flange is connected with the end part of the filter element 3, and the inner diameter of the support flange meets the precision requirement that the natural gas exhausted from the filter element 3 completely enters the outlet pipe 6. Because the equal opening setting in both ends of filter core 3, after filter core end cap 433 from the upper end shutoff natural gas, the lower extreme also need support and shutoff, outlet duct 6 stretches into in the barrel 2, and stay tube 62 sets up along the length direction of barrel 2, the support flange that the tip of stay tube 62 set up is used for supporting filter core 3 on the one hand, on the other hand passes through the extrusion of upper end filter core end cap 433, the support flange also seals the lower tip of filter core 3, make the natural gas in the barrel 2 can only enter into in the filter core 3 through the lateral wall filter screen of filter core 3, and the natural gas that enters into in the filter core 3 can only pass through stay tube 62 and discharge along air duct 61.
Further, as shown in fig. 6, a temperature measuring tube 63 is disposed on the air duct 61, and the temperature measuring tube 63 is disposed outside the cylinder 2 and used for installing a temperature controller. Temperature tube 63 sets up in being close to 6 sides of outlet duct for the temperature of the natural gas after the test process filter core 3 can set up the temperature controller on the temperature tube 63, and the temperature controller is prior art, can control opening and shutting of electric heating element 41 through setting up the temperature range, and when the temperature that records was less than the settlement temperature, electric heating element 41 began to heat, and when the temperature exceeded the settlement temperature, electric heating element 41 stopped heating. This arrangement is more intelligent and more energy efficient, heating the natural gas only when necessary.
In order to facilitate the maintenance and the replacement of the filter element, in the embodiment of the utility model, the electric heating device 4 is detachably fixed on the cylinder body 2. The flange is matched with the sealing element and the fastening element; at the same time, the heat-conducting sleeve 43 is also detachably fixed to the cover plate 42 for easy maintenance and replacement.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An anti-icing filter for natural gas, the filter comprising:
an intake pipe (1) for introducing natural gas;
the cylinder (2) is connected with the air inlet pipe (1), and natural gas entering from the air inlet pipe (1) enters the cylinder (2);
the filter element (3) is arranged in the barrel (2), the cross section of the filter element (3) is annular and extends along the length direction of the barrel (2), and a filter screen is arranged on the side wall of the filter element (3) and used for filtering impurities in natural gas;
the electric heating device (4) is arranged at the opening end of the barrel body (2), the electric heating device (4) further comprises an electric heating element (41) and a cover plate (42), wherein the electric heating element (41) is connected with the cover plate (42) and extends along the length direction of the barrel body (2), and the electric heating element (41) extends into the filter element (3) to heat natural gas entering the filter element (3); the cover plate (42) is connected with the opening end of the cylinder body (2) in a sealing way;
the junction box (5) is arranged on the cover plate (42) and is used for being electrically connected with the electric heating piece (41), and after the junction box (5) is electrified, the electric heating piece (41) starts to work;
and one end of the air outlet pipe (6) is connected with the filter element (3) and is used for leading out the natural gas filtered by the filter element (3) from the cylinder body (2).
2. The natural gas anti-icing and anti-blocking filter as claimed in claim 1, further comprising a sewage draining outlet (7), wherein the sewage draining outlet (7) is arranged at the bottom end of the cylinder body (2).
3. The natural gas anti-icing filter of claim 1, wherein the electrical heating device (4) further comprises a heat conducting sleeve (43), the heat conducting sleeve (43) further comprising a connecting portion (431) and a heat conducting portion (432); the connecting part (431) is connected with the inner side of the cover plate (42) to be fixed on the cover plate (42), the heat conducting part (432) is of a barrel-shaped structure, the electric heating part (41) is sleeved in the heat conducting part (432), and the size of the heat conducting part (432) meets the precision requirement of being sleeved in the filter element (3).
4. The natural gas anti-icing and anti-blocking filter according to claim 3, wherein a filter element plug (433) is arranged at the connection position of the heat conducting part (432) and the connecting part (431), the filter element plug (433) is of a step-type tubular structure integrated with the connecting part (431), and the diameter of the step end face is larger than the inner diameter of the filter element (3) so as to plug the end part of the filter element (3) and enable natural gas to enter the gas outlet pipe (6) only from the side wall of the filter element (3).
5. The natural gas anti-icing and anti-blocking filter according to claim 4, wherein the gas outlet pipe (6) comprises a gas guide pipe (61) and a support pipe (62), the gas guide pipe (61) penetrates through one side wall of the cylinder body (2) to be fixedly arranged, the support pipe (62) is arranged inside the cylinder body (2) and provided with a support flange at the end part, the support flange is connected with the end part of the filter element (3), and the inner diameter of the support flange meets the precision requirement that the natural gas discharged from the filter element (3) completely enters the gas outlet pipe (6).
6. The natural gas anti-icing and anti-blocking filter according to claim 3, characterized in that spiral heat conducting grooves (4321) are arranged on the heat conducting part (432) at equal intervals along the length direction of the heat conducting part, the outer diameter of the heat conducting part (432) is smaller than the inner diameter of the filter element (3), and the size of the heat conducting part meets the precision requirement of extending into the filter element (3).
7. The natural gas anti-icing and anti-blocking filter as claimed in claim 5, wherein the gas guide pipe (61) is provided with a temperature measuring pipe (63), and the temperature measuring pipe (63) is arranged on the outer side of the cylinder body (2) and used for installing a temperature controller.
8. An anti-icing and anti-clogging filter for natural gas as claimed in claim 1, characterized in that said electric heating means (4) is removably fixed to the cylindrical body (2).
9. An anti-icing filter for natural gas according to claim 3, characterised in that said heat-conducting sleeve (43) is removably fixed to said cover plate (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625982.1U CN209836107U (en) | 2019-04-30 | 2019-04-30 | Natural gas anti-icing stifled filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920625982.1U CN209836107U (en) | 2019-04-30 | 2019-04-30 | Natural gas anti-icing stifled filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209836107U true CN209836107U (en) | 2019-12-24 |
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ID=68915194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920625982.1U Active CN209836107U (en) | 2019-04-30 | 2019-04-30 | Natural gas anti-icing stifled filter |
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| Country | Link |
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| CN (1) | CN209836107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530180A (en) * | 2020-05-19 | 2020-08-14 | 杭州昕华信息科技有限公司 | Natural gas filter |
| CN114887414A (en) * | 2022-06-13 | 2022-08-12 | 常熟市飞奥压力容器制造有限公司 | Anti-icing stifled gas filter |
-
2019
- 2019-04-30 CN CN201920625982.1U patent/CN209836107U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111530180A (en) * | 2020-05-19 | 2020-08-14 | 杭州昕华信息科技有限公司 | Natural gas filter |
| CN114887414A (en) * | 2022-06-13 | 2022-08-12 | 常熟市飞奥压力容器制造有限公司 | Anti-icing stifled gas filter |
| CN114887414B (en) * | 2022-06-13 | 2023-12-29 | 常熟市飞奥压力容器制造有限公司 | Anti-ice blocking gas filter |
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