CN212731416U - Low-pressure natural gas filter assembly - Google Patents
Low-pressure natural gas filter assembly Download PDFInfo
- Publication number
- CN212731416U CN212731416U CN202021054828.2U CN202021054828U CN212731416U CN 212731416 U CN212731416 U CN 212731416U CN 202021054828 U CN202021054828 U CN 202021054828U CN 212731416 U CN212731416 U CN 212731416U
- Authority
- CN
- China
- Prior art keywords
- filter
- filter element
- layer
- shell
- natural gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Abstract
The utility model discloses a low-pressure natural gas filter assembly, which comprises a filter base and a shell hermetically matched with the filter base, wherein a filter element assembly is arranged in a cavity enclosed by the filter base and the shell, an air inlet joint is arranged on the filter base, an air outlet joint is arranged at the upper part of the shell, a mounting hole is arranged in the filter base, and the air inlet joint is communicated with the mounting hole; the filter element component comprises an integral cylindrical inner framework, an integral cylindrical filter layer is wound outside the inner framework, the outer surface of the filter layer is connected with an outer framework which plays a supporting role, and an oil absorption layer made of felt is connected outside the outer framework; a cavity enclosed by the inner framework is communicated with the mounting hole in the filter base; an annular cavity is enclosed between the filter element assembly and the inner wall of the shell and is communicated with the air outlet joint. Because the utility model discloses set up the oil absorption layer that the felt made outside the filtering layer of filtering impurity, therefore improved the utility model discloses the efficiency of filtering the oil content effectively filters the machine oil composition that exists in the natural gas to protect the engine normal work better.
Description
Technical Field
The utility model relates to a natural gas filtration technology field especially relates to a low pressure natural gas filter assembly.
Background
In recent years, natural gas engines are developed rapidly, and natural gas also needs to be filtered to remove impurities in gas to protect the engines before being used for combustion of the engines like traditional fuel oil engines. The problem of low oil-gas separation efficiency generally exists in the natural gas filter applied to the existing market. This patent has designed a natural gas filter assembly that can get rid of impurity in the natural gas.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low pressure natural gas filter assembly, the efficiency of filtering the machine oil composition is higher.
In order to achieve the purpose, the low-pressure natural gas filter assembly comprises a filter base and a shell which is in sealing fit with the filter base, wherein a filter element assembly is arranged in a cavity enclosed by the filter base and the shell, an air inlet connector is arranged on the filter base, an air outlet connector is arranged at the upper part of the shell, an installation hole is arranged in the filter base, and the air inlet connector is communicated with the installation hole;
the filter element component comprises an integral cylindrical inner framework, an integral cylindrical filter layer is wound outside the inner framework, the outer surface of the filter layer is connected with an outer framework which plays a supporting role, and an oil absorption layer made of felt is connected outside the outer framework; a cavity enclosed by the inner framework is communicated with the mounting hole in the filter base;
an annular cavity is enclosed between the filter element assembly and the inner wall of the shell and is communicated with the air outlet joint.
The filter element assembly also comprises a filter element upper cover, the filter element upper cover is convexly provided with an upper connecting cylinder which is matched with the mounting hole in the filter base, the outer surface of the circumferential side wall of the upper connecting cylinder is provided with an annular groove, an annular sealing ring is arranged in the annular groove, and the upper connecting cylinder is in sealing fit with the hole wall of the mounting hole in the filter base through the annular sealing ring in the annular groove;
the filter element comprises an inner framework, a filter layer, an outer framework and an oil absorption layer, and a filter element mounting groove is formed downwards on the filter element upper cover and corresponds to the filter element; the top end of the filter element is embedded in the filter element mounting groove;
the filter element upper cover is provided with a through hole which is upwards connected with the upper connecting cylinder and downwards connected with a filter element central hole formed by the inner framework and the filter layer;
the circumference side-mounting of filter core upper cover has big-end-up's hollow conical structure, and the casing top is big-end-up's bellmouth structure, the surface of hollow conical structure and the internal surface looks adaptation of bellmouth structure.
The filter element comprises a shell, wherein the shell is provided with a filter element upper cover and a shell body, the filter element upper cover is provided with a positioning groove on the circumferential surface, and the top of the shell body is provided with a positioning bulge matched with the positioning groove.
The wave-shaped filter layer is in an integral cylindrical structure.
The filtering layer is of a multi-layer structure, the middle layer of the filtering layer is a non-woven fabric layer, one side surface of the non-woven fabric layer is bonded with a metal lining net layer, and the other side surface of the non-woven fabric layer is bonded with a chemical fiber filtering material layer; the chemical fiber filter material layer is adhered to the inner skeleton, and the metal lining net layer is adhered to the outer skeleton.
The bottom end of the filter element assembly is higher than the bottom surface of the shell, and an oil storage cavity is defined between the filter element assembly and the bottom surface of the shell; the bottom surface of the shell is provided with an oil discharge valve.
At least one reinforcing rib with a triangular horizontal section is arranged on the inner surface of the shell along the vertical direction.
The filter base is downwards provided with an installation cylinder, the outer surface of the top of the shell is connected with the inner surface of the installation cylinder in a threaded manner, the inner wall of the installation groove is provided with an annular seal groove, a rubber seal ring is installed in the annular seal groove, and the top end of the shell is in compression joint with the rubber seal ring to form a seal.
The utility model discloses have following advantage:
because the utility model discloses set up the oil absorption layer that the felt made outside the filtering layer of filtering impurity, therefore improved the utility model discloses the efficiency of filtering the oil content effectively filters the machine oil composition that exists in the natural gas to protect the engine normal work better.
The surface of the inverted hollow conical structure is matched with the inner surface of the horn mouth structure, so that the shell can realize axial positioning on the filter element assembly. During the assembly, the positioning protrusion is inserted into the positioning groove, so that the casing realizes circumferential positioning on the filter element assembly.
The filter layers are wavy, and the wavy filter layers form an integral cylindrical structure, so that the structure can provide a large filtering area in unit volume.
The specific structure of the filtering layer has good filtering effect on impurities except oil in the natural gas. The setting of strengthening rib has improved the utility model discloses a structural strength.
Drawings
FIG. 1 is a structure of the present invention;
FIG. 2 is a schematic view of the construction of the upper cover of the cartridge;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic structural view of the housing;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a schematic structural view of a filter cartridge assembly;
fig. 7 is a structural schematic diagram of a partial horizontal section of a filter layer.
Detailed Description
As shown in fig. 1 to 7, the low-pressure natural gas filter assembly of the present invention includes a filter base 1 and a housing 2 hermetically fitted with the filter base 1, a filter element assembly is installed in a cavity enclosed by the filter base 1 and the housing 2, an air inlet connector 3 is disposed on the filter base 1, an air outlet connector is disposed on the upper portion of the housing 2, a mounting hole 4 is disposed in the filter base 1, and the air inlet connector 3 is communicated with the mounting hole 4;
the filter element component comprises an integral cylindrical inner framework 5, an integral cylindrical filter layer 6 is wound outside the inner framework 5, the outer surface of the filter layer 6 is connected (bonded) with an outer framework 7 playing a supporting role, the inner framework 5 and the outer framework 7 are framework structures and allow fluid to pass in the radial direction, and the outer framework 7 is externally connected (bonded) with an oil absorption layer 8 made of felt; a cavity enclosed by the inner framework 5 is communicated with the mounting hole 4 in the filter base 1;
an annular cavity 9 is enclosed between the filter element assembly and the inner wall of the shell 2, and the annular cavity 9 is communicated with the air outlet joint. The inlet connection 3 and the outlet connection are conventional and are not shown.
Because the utility model discloses the oil absorption layer 8 that the felt was made has been set up outside filtering impurity's filtering layer 6, therefore has improved the utility model discloses the efficiency of filtering the oil content effectively filters the machine oil composition that exists in the natural gas to protect the engine to normally work better.
The filter element assembly also comprises a filter element upper cover 10, the filter element upper cover 10 is upwards convexly provided with an upper connecting cylinder 11 which is used for being matched with the mounting hole 4 in the filter base 1, the outer surface of the circumferential side wall of the upper connecting cylinder 11 is provided with an annular groove 12, an annular sealing ring 13 is arranged in the annular groove 12, and the upper connecting cylinder 11 is in sealing fit with the hole wall of the mounting hole 4 in the filter base 1 through the annular sealing ring 13 in the annular groove 12;
the filter element comprises an inner framework 5, a filter layer 6, an outer framework 7 and an oil absorption layer 8, and a filter element mounting groove 14 is formed downwards on the filter element upper cover 10 corresponding to the filter element; the top end of the filter element is embedded in the filter element mounting groove 14; the cartridge mounting recess 14 is annular.
The filter element upper cover 10 is provided with a through hole 15, and the through hole 15 is upwards connected with the upper connecting cylinder 11 and downwards connected with a filter element central hole 16 surrounded by the inner framework 5 and the filter layer 6;
the peripheral side of filter core upper cover 10 is installed big end down's hollow conical structure 17, and casing 2 top is big end down's bellmouth structure 18, and the surface of hollow conical structure 17 and the internal surface looks adaptation of bellmouth structure 18.
The outer surface of the inverted hollow conical structure 17 is matched with the inner surface of the bell-mouth structure 18, so that the housing 2 can axially position the filter element assembly.
The filter element upper cover 10 is provided with a positioning groove 19 on the circumferential surface, and the top of the shell 2 is provided with a positioning bulge 20 matched with the positioning groove 19.
During assembly, the positioning protrusion 20 is inserted into the positioning groove 19, so that the housing 2 circumferentially positions the filter element assembly.
The filter layer 6 is in a wave shape, and the wave-shaped filter layer 6 is enclosed into an integral cylindrical structure, which can provide a larger filtering area in a unit volume and is also a common structure of the filter element.
The filtering layer 6 is of a multilayer structure, the middle layer of the filtering layer 6 is a non-woven fabric layer 21, one side surface of the non-woven fabric layer 21 is bonded with a metal lining net layer 22, and the other side surface is bonded with a chemical fiber filtering material layer 23; the chemical fiber filter material layer 23 is bonded with the inner framework 5, and the metal lining net layer 22 is bonded with the outer framework 7.
Wherein, the chemical fiber filter material layer is provided with at least one layer, and also can be provided with two or more chemical fiber filter material layers 23. Chemical fiber filter materials, non-woven fabrics and metal lining nets are all the prior art, and detailed description is omitted.
The specific structure of the filter layer 6 has a good filtering effect on impurities except oil in the natural gas.
The bottom end of the filter element assembly is higher than the bottom surface of the shell 2, and an oil storage cavity 24 is defined between the filter element assembly and the bottom surface of the shell 2; the bottom surface of the shell 2 is provided with an oil drain valve 25.
At least one reinforcing rib 26 with a triangular horizontal section is arranged on the inner surface of the shell 2 along the vertical direction. The setting of strengthening rib 26 has improved the utility model discloses a structural strength.
Filter seat 1 and be equipped with downwards with the communicating installation section of thick bamboo 27 of mounting hole 4, casing 2 top surface is in the same place with installation section of thick bamboo 27 internal surface threaded connection, and the installation groove inner wall is equipped with annular seal groove, installs rubber seal 28 in the annular seal groove, casing 2 top and rubber seal 28 looks crimping and form sealedly.
During assembly, the filter element assembly is firstly installed in the shell 2 from top to bottom, and then the shell 2 and the filter element assembly are installed in the filter base 1 from bottom to top. When in use, the utility model discloses an air inlet connector 3 and the joint of giving vent to anger establish ties among the gas circuit of motor vehicle.
When the engine is started, natural gas in a gas cylinder of a motor vehicle enters a natural gas filter through an air inlet joint 3 on a filter base 1; the natural gas passes through the filter element along the radial direction after reaching the central hole 16 of the filter element, impurities except oil in the natural gas are effectively filtered when passing through the chemical fiber filter material layer 23 and the non-woven fabric layer 21, and engine oil in the natural gas is absorbed in the oil absorption layer 8 when passing through the oil absorption layer 8. The natural gas flows through the annular cavity 9 between filter element subassembly and the 2 inner walls of casing and the joint of giving vent to anger after passing through filtering layer 6 the utility model discloses, access to the engine direction along the gas circuit of motor vehicle. The oil content in the oil absorption layer 8 is increased along with the continuous operation of the motor vehicle, finally the oil is condensed downwards into drops under the action of gravity and finally drops into the oil storage cavity 24, and a user opens the oil discharge valve 25 periodically to discharge the oil in the oil storage cavity 24.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.
Claims (8)
1. The low-pressure natural gas filter assembly comprises a filter base and a shell in sealing fit with the filter base, wherein a filter element assembly is arranged in a cavity enclosed by the filter base and the shell, an air inlet connector is arranged on the filter base, an air outlet connector is arranged at the upper part of the shell, a mounting hole is formed in the filter base, and the air inlet connector is communicated with the mounting hole;
the method is characterized in that:
the filter element component comprises an integral cylindrical inner framework, an integral cylindrical filter layer is wound outside the inner framework, the outer surface of the filter layer is connected with an outer framework which plays a supporting role, and an oil absorption layer made of felt is connected outside the outer framework; a cavity enclosed by the inner framework is communicated with the mounting hole in the filter base;
an annular cavity is enclosed between the filter element assembly and the inner wall of the shell and is communicated with the air outlet joint.
2. The low pressure natural gas filter assembly of claim 1, wherein:
the filter element assembly also comprises a filter element upper cover, the filter element upper cover is convexly provided with an upper connecting cylinder which is matched with the mounting hole in the filter base, the outer surface of the circumferential side wall of the upper connecting cylinder is provided with an annular groove, an annular sealing ring is arranged in the annular groove, and the upper connecting cylinder is in sealing fit with the hole wall of the mounting hole in the filter base through the annular sealing ring in the annular groove;
the filter element comprises an inner framework, a filter layer, an outer framework and an oil absorption layer, and a filter element mounting groove is formed downwards on the filter element upper cover and corresponds to the filter element; the top end of the filter element is embedded in the filter element mounting groove;
the filter element upper cover is provided with a through hole which is upwards connected with the upper connecting cylinder and downwards connected with a filter element central hole formed by the inner framework and the filter layer;
the circumference side-mounting of filter core upper cover has big-end-up's hollow conical structure, and the casing top is big-end-up's bellmouth structure, the surface of hollow conical structure and the internal surface looks adaptation of bellmouth structure.
3. The low pressure natural gas filter assembly of claim 2, wherein: the filter element comprises a shell, wherein the shell is provided with a filter element upper cover and a shell body, the filter element upper cover is provided with a positioning groove on the circumferential surface, and the top of the shell body is provided with a positioning bulge matched with the positioning groove.
4. The low pressure natural gas filter assembly of any one of claims 1 to 3, wherein: the wave-shaped filter layer is in an integral cylindrical structure.
5. The low pressure natural gas filter assembly of any one of claims 1 to 3, wherein: the filtering layer is of a multi-layer structure, the middle layer of the filtering layer is a non-woven fabric layer, one side surface of the non-woven fabric layer is bonded with a metal lining net layer, and the other side surface of the non-woven fabric layer is bonded with a chemical fiber filtering material layer; the chemical fiber filter material layer is adhered to the inner skeleton, and the metal lining net layer is adhered to the outer skeleton.
6. The low pressure natural gas filter assembly of any one of claims 1 to 3, wherein: the bottom end of the filter element assembly is higher than the bottom surface of the shell, and an oil storage cavity is defined between the filter element assembly and the bottom surface of the shell; the bottom surface of the shell is provided with an oil discharge valve.
7. The low pressure natural gas filter assembly of any one of claims 1 to 3, wherein: at least one reinforcing rib with a triangular horizontal section is arranged on the inner surface of the shell along the vertical direction.
8. The low pressure natural gas filter assembly of any one of claims 1 to 3, wherein: the filter base is downwards provided with an installation cylinder, the outer surface of the top of the shell is connected with the inner surface of the installation cylinder in a threaded manner, the inner wall of the installation groove is provided with an annular seal groove, a rubber seal ring is installed in the annular seal groove, and the top end of the shell is in compression joint with the rubber seal ring to form a seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021054828.2U CN212731416U (en) | 2020-06-10 | 2020-06-10 | Low-pressure natural gas filter assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021054828.2U CN212731416U (en) | 2020-06-10 | 2020-06-10 | Low-pressure natural gas filter assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212731416U true CN212731416U (en) | 2021-03-19 |
Family
ID=75007727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021054828.2U Active CN212731416U (en) | 2020-06-10 | 2020-06-10 | Low-pressure natural gas filter assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212731416U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU218039U1 (en) * | 2023-01-29 | 2023-05-03 | Акционерное общество "Завод фильтров "Седан" | Filter element for purification of gaseous working medium |
-
2020
- 2020-06-10 CN CN202021054828.2U patent/CN212731416U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU218039U1 (en) * | 2023-01-29 | 2023-05-03 | Акционерное общество "Завод фильтров "Седан" | Filter element for purification of gaseous working medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4233042A (en) | Air-oil separator | |
| CN102497914B (en) | Multi-stage filter cartridge with polyurethane endcaps | |
| CN105492097A (en) | Fuel water separator filter | |
| US20040031253A1 (en) | Filter element, particularly for separating a liquid from a gas stream | |
| CN212731416U (en) | Low-pressure natural gas filter assembly | |
| CN106089512A (en) | A kind of air filter for automobile | |
| CN109083783A (en) | A kind of fuel oil fitering element assembly | |
| CN210522069U (en) | Energy-saving air filter element device for vehicle | |
| CN209100180U (en) | A kind of fuel oil fitering element assembly | |
| CN211737325U (en) | Engine air filter and engine | |
| CN210769097U (en) | Diesel filter assembly with electric fuel pump | |
| CN112796854A (en) | Oil-gas separation device and engine | |
| CN218093277U (en) | Diesel oil filter element with prevent blockking up exhaust hole | |
| CN218787149U (en) | Filter with two pipeline joints | |
| CN219672757U (en) | Isolation sealing type fuel filter | |
| CN212881280U (en) | Filter element with safety bypass function | |
| CN220815854U (en) | Single-cylinder engine filter | |
| CN214914215U (en) | Composite filter element assembly | |
| CN218439692U (en) | Vacuum filter | |
| CN108999673A (en) | A kind of environmental-protective filter core being integrated with return valve function by plug-in type | |
| CN114087101B (en) | Diesel filter assembly | |
| CN218816693U (en) | Direct-current filter element type air filter | |
| CN220470086U (en) | Radial and axial bidirectional sealing air filter | |
| CN219888176U (en) | Fuel filter with good sealing effect | |
| CN217735629U (en) | Shell and air cleaner's shell structure under air strain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |